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linux/drivers/s390/net/qeth_main.c
Frank Blaschka ee2db684b4 s390: qeth driver fixes: atomic context fixups 
- qeth device functions were not callable
      in atomic context due to usage of wait_event_xxx operations in qeth.
      "schedule while atomic" message appeared and kernel dumped when
      removing slave from bond device.

Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-01-09 02:18:32 -05:00

8658 lines
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/*
* linux/drivers/s390/net/qeth_main.c
*
* Linux on zSeries OSA Express and HiperSockets support
*
* Copyright 2000,2003 IBM Corporation
*
* Author(s): Original Code written by
* Utz Bacher (utz.bacher@de.ibm.com)
* Rewritten by
* Frank Pavlic (fpavlic@de.ibm.com) and
* Thomas Spatzier <tspat@de.ibm.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/mm.h>
#include <linux/ip.h>
#include <linux/inetdevice.h>
#include <linux/netdevice.h>
#include <linux/sched.h>
#include <linux/workqueue.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/tcp.h>
#include <linux/icmp.h>
#include <linux/skbuff.h>
#include <linux/in.h>
#include <linux/igmp.h>
#include <linux/init.h>
#include <linux/reboot.h>
#include <linux/mii.h>
#include <linux/rcupdate.h>
#include <linux/ethtool.h>
#include <net/arp.h>
#include <net/ip.h>
#include <net/route.h>
#include <asm/ebcdic.h>
#include <asm/io.h>
#include <asm/qeth.h>
#include <asm/timex.h>
#include <asm/semaphore.h>
#include <asm/uaccess.h>
#include <asm/s390_rdev.h>
#include "qeth.h"
#include "qeth_mpc.h"
#include "qeth_fs.h"
#include "qeth_eddp.h"
#include "qeth_tso.h"
static const char *version = "qeth S/390 OSA-Express driver";
/**
* Debug Facility Stuff
*/
static debug_info_t *qeth_dbf_setup = NULL;
static debug_info_t *qeth_dbf_data = NULL;
static debug_info_t *qeth_dbf_misc = NULL;
static debug_info_t *qeth_dbf_control = NULL;
debug_info_t *qeth_dbf_trace = NULL;
static debug_info_t *qeth_dbf_sense = NULL;
static debug_info_t *qeth_dbf_qerr = NULL;
DEFINE_PER_CPU(char[256], qeth_dbf_txt_buf);
static struct lock_class_key qdio_out_skb_queue_key;
/**
* some more definitions and declarations
*/
static unsigned int known_devices[][10] = QETH_MODELLIST_ARRAY;
/* list of our cards */
struct qeth_card_list_struct qeth_card_list;
/*process list want to be notified*/
spinlock_t qeth_notify_lock;
struct list_head qeth_notify_list;
static void qeth_send_control_data_cb(struct qeth_channel *,
struct qeth_cmd_buffer *);
/**
* here we go with function implementation
*/
static void
qeth_init_qdio_info(struct qeth_card *card);
static int
qeth_init_qdio_queues(struct qeth_card *card);
static int
qeth_alloc_qdio_buffers(struct qeth_card *card);
static void
qeth_free_qdio_buffers(struct qeth_card *);
static void
qeth_clear_qdio_buffers(struct qeth_card *);
static void
qeth_clear_ip_list(struct qeth_card *, int, int);
static void
qeth_clear_ipacmd_list(struct qeth_card *);
static int
qeth_qdio_clear_card(struct qeth_card *, int);
static void
qeth_clear_working_pool_list(struct qeth_card *);
static void
qeth_clear_cmd_buffers(struct qeth_channel *);
static int
qeth_stop(struct net_device *);
static void
qeth_clear_ipato_list(struct qeth_card *);
static int
qeth_is_addr_covered_by_ipato(struct qeth_card *, struct qeth_ipaddr *);
static void
qeth_irq_tasklet(unsigned long);
static int
qeth_set_online(struct ccwgroup_device *);
static int
__qeth_set_online(struct ccwgroup_device *gdev, int recovery_mode);
static struct qeth_ipaddr *
qeth_get_addr_buffer(enum qeth_prot_versions);
static void
qeth_set_multicast_list(struct net_device *);
static void
qeth_setadp_promisc_mode(struct qeth_card *);
static void
qeth_notify_processes(void)
{
/*notify all registered processes */
struct qeth_notify_list_struct *n_entry;
QETH_DBF_TEXT(trace,3,"procnoti");
spin_lock(&qeth_notify_lock);
list_for_each_entry(n_entry, &qeth_notify_list, list) {
send_sig(n_entry->signum, n_entry->task, 1);
}
spin_unlock(&qeth_notify_lock);
}
int
qeth_notifier_unregister(struct task_struct *p)
{
struct qeth_notify_list_struct *n_entry, *tmp;
QETH_DBF_TEXT(trace, 2, "notunreg");
spin_lock(&qeth_notify_lock);
list_for_each_entry_safe(n_entry, tmp, &qeth_notify_list, list) {
if (n_entry->task == p) {
list_del(&n_entry->list);
kfree(n_entry);
goto out;
}
}
out:
spin_unlock(&qeth_notify_lock);
return 0;
}
int
qeth_notifier_register(struct task_struct *p, int signum)
{
struct qeth_notify_list_struct *n_entry;
/*check first if entry already exists*/
spin_lock(&qeth_notify_lock);
list_for_each_entry(n_entry, &qeth_notify_list, list) {
if (n_entry->task == p) {
n_entry->signum = signum;
spin_unlock(&qeth_notify_lock);
return 0;
}
}
spin_unlock(&qeth_notify_lock);
n_entry = (struct qeth_notify_list_struct *)
kmalloc(sizeof(struct qeth_notify_list_struct),GFP_KERNEL);
if (!n_entry)
return -ENOMEM;
n_entry->task = p;
n_entry->signum = signum;
spin_lock(&qeth_notify_lock);
list_add(&n_entry->list,&qeth_notify_list);
spin_unlock(&qeth_notify_lock);
return 0;
}
/**
* free channel command buffers
*/
static void
qeth_clean_channel(struct qeth_channel *channel)
{
int cnt;
QETH_DBF_TEXT(setup, 2, "freech");
for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
kfree(channel->iob[cnt].data);
}
/**
* free card
*/
static void
qeth_free_card(struct qeth_card *card)
{
QETH_DBF_TEXT(setup, 2, "freecrd");
QETH_DBF_HEX(setup, 2, &card, sizeof(void *));
qeth_clean_channel(&card->read);
qeth_clean_channel(&card->write);
if (card->dev)
free_netdev(card->dev);
qeth_clear_ip_list(card, 0, 0);
qeth_clear_ipato_list(card);
kfree(card->ip_tbd_list);
qeth_free_qdio_buffers(card);
kfree(card);
}
/**
* alloc memory for command buffer per channel
*/
static int
qeth_setup_channel(struct qeth_channel *channel)
{
int cnt;
QETH_DBF_TEXT(setup, 2, "setupch");
for (cnt=0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
channel->iob[cnt].data = (char *)
kmalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
if (channel->iob[cnt].data == NULL)
break;
channel->iob[cnt].state = BUF_STATE_FREE;
channel->iob[cnt].channel = channel;
channel->iob[cnt].callback = qeth_send_control_data_cb;
channel->iob[cnt].rc = 0;
}
if (cnt < QETH_CMD_BUFFER_NO) {
while (cnt-- > 0)
kfree(channel->iob[cnt].data);
return -ENOMEM;
}
channel->buf_no = 0;
channel->io_buf_no = 0;
atomic_set(&channel->irq_pending, 0);
spin_lock_init(&channel->iob_lock);
init_waitqueue_head(&channel->wait_q);
channel->irq_tasklet.data = (unsigned long) channel;
channel->irq_tasklet.func = qeth_irq_tasklet;
return 0;
}
/**
* alloc memory for card structure
*/
static struct qeth_card *
qeth_alloc_card(void)
{
struct qeth_card *card;
QETH_DBF_TEXT(setup, 2, "alloccrd");
card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
if (!card)
return NULL;
QETH_DBF_HEX(setup, 2, &card, sizeof(void *));
if (qeth_setup_channel(&card->read)) {
kfree(card);
return NULL;
}
if (qeth_setup_channel(&card->write)) {
qeth_clean_channel(&card->read);
kfree(card);
return NULL;
}
return card;
}
static long
__qeth_check_irb_error(struct ccw_device *cdev, struct irb *irb)
{
if (!IS_ERR(irb))
return 0;
switch (PTR_ERR(irb)) {
case -EIO:
PRINT_WARN("i/o-error on device %s\n", cdev->dev.bus_id);
QETH_DBF_TEXT(trace, 2, "ckirberr");
QETH_DBF_TEXT_(trace, 2, " rc%d", -EIO);
break;
case -ETIMEDOUT:
PRINT_WARN("timeout on device %s\n", cdev->dev.bus_id);
QETH_DBF_TEXT(trace, 2, "ckirberr");
QETH_DBF_TEXT_(trace, 2, " rc%d", -ETIMEDOUT);
break;
default:
PRINT_WARN("unknown error %ld on device %s\n", PTR_ERR(irb),
cdev->dev.bus_id);
QETH_DBF_TEXT(trace, 2, "ckirberr");
QETH_DBF_TEXT(trace, 2, " rc???");
}
return PTR_ERR(irb);
}
static int
qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
{
int dstat,cstat;
char *sense;
sense = (char *) irb->ecw;
cstat = irb->scsw.cstat;
dstat = irb->scsw.dstat;
if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
QETH_DBF_TEXT(trace,2, "CGENCHK");
PRINT_WARN("check on device %s, dstat=x%x, cstat=x%x ",
cdev->dev.bus_id, dstat, cstat);
HEXDUMP16(WARN, "irb: ", irb);
HEXDUMP16(WARN, "irb: ", ((char *) irb) + 32);
return 1;
}
if (dstat & DEV_STAT_UNIT_CHECK) {
if (sense[SENSE_RESETTING_EVENT_BYTE] &
SENSE_RESETTING_EVENT_FLAG) {
QETH_DBF_TEXT(trace,2,"REVIND");
return 1;
}
if (sense[SENSE_COMMAND_REJECT_BYTE] &
SENSE_COMMAND_REJECT_FLAG) {
QETH_DBF_TEXT(trace,2,"CMDREJi");
return 0;
}
if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
QETH_DBF_TEXT(trace,2,"AFFE");
return 1;
}
if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
QETH_DBF_TEXT(trace,2,"ZEROSEN");
return 0;
}
QETH_DBF_TEXT(trace,2,"DGENCHK");
return 1;
}
return 0;
}
static int qeth_issue_next_read(struct qeth_card *);
/**
* interrupt handler
*/
static void
qeth_irq(struct ccw_device *cdev, unsigned long intparm, struct irb *irb)
{
int rc;
int cstat,dstat;
struct qeth_cmd_buffer *buffer;
struct qeth_channel *channel;
struct qeth_card *card;
QETH_DBF_TEXT(trace,5,"irq");
if (__qeth_check_irb_error(cdev, irb))
return;
cstat = irb->scsw.cstat;
dstat = irb->scsw.dstat;
card = CARD_FROM_CDEV(cdev);
if (!card)
return;
if (card->read.ccwdev == cdev){
channel = &card->read;
QETH_DBF_TEXT(trace,5,"read");
} else if (card->write.ccwdev == cdev) {
channel = &card->write;
QETH_DBF_TEXT(trace,5,"write");
} else {
channel = &card->data;
QETH_DBF_TEXT(trace,5,"data");
}
atomic_set(&channel->irq_pending, 0);
if (irb->scsw.fctl & (SCSW_FCTL_CLEAR_FUNC))
channel->state = CH_STATE_STOPPED;
if (irb->scsw.fctl & (SCSW_FCTL_HALT_FUNC))
channel->state = CH_STATE_HALTED;
/*let's wake up immediately on data channel*/
if ((channel == &card->data) && (intparm != 0))
goto out;
if (intparm == QETH_CLEAR_CHANNEL_PARM) {
QETH_DBF_TEXT(trace, 6, "clrchpar");
/* we don't have to handle this further */
intparm = 0;
}
if (intparm == QETH_HALT_CHANNEL_PARM) {
QETH_DBF_TEXT(trace, 6, "hltchpar");
/* we don't have to handle this further */
intparm = 0;
}
if ((dstat & DEV_STAT_UNIT_EXCEP) ||
(dstat & DEV_STAT_UNIT_CHECK) ||
(cstat)) {
if (irb->esw.esw0.erw.cons) {
/* TODO: we should make this s390dbf */
PRINT_WARN("sense data available on channel %s.\n",
CHANNEL_ID(channel));
PRINT_WARN(" cstat 0x%X\n dstat 0x%X\n", cstat, dstat);
HEXDUMP16(WARN,"irb: ",irb);
HEXDUMP16(WARN,"sense data: ",irb->ecw);
}
rc = qeth_get_problem(cdev,irb);
if (rc) {
qeth_schedule_recovery(card);
goto out;
}
}
if (intparm) {
buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
buffer->state = BUF_STATE_PROCESSED;
}
if (channel == &card->data)
return;
if (channel == &card->read &&
channel->state == CH_STATE_UP)
qeth_issue_next_read(card);
qeth_irq_tasklet((unsigned long)channel);
return;
out:
wake_up(&card->wait_q);
}
/**
* tasklet function scheduled from irq handler
*/
static void
qeth_irq_tasklet(unsigned long data)
{
struct qeth_card *card;
struct qeth_channel *channel;
struct qeth_cmd_buffer *iob;
__u8 index;
QETH_DBF_TEXT(trace,5,"irqtlet");
channel = (struct qeth_channel *) data;
iob = channel->iob;
index = channel->buf_no;
card = CARD_FROM_CDEV(channel->ccwdev);
while (iob[index].state == BUF_STATE_PROCESSED) {
if (iob[index].callback !=NULL) {
iob[index].callback(channel,iob + index);
}
index = (index + 1) % QETH_CMD_BUFFER_NO;
}
channel->buf_no = index;
wake_up(&card->wait_q);
}
static int qeth_stop_card(struct qeth_card *, int);
static int
__qeth_set_offline(struct ccwgroup_device *cgdev, int recovery_mode)
{
struct qeth_card *card = (struct qeth_card *) cgdev->dev.driver_data;
int rc = 0, rc2 = 0, rc3 = 0;
enum qeth_card_states recover_flag;
QETH_DBF_TEXT(setup, 3, "setoffl");
QETH_DBF_HEX(setup, 3, &card, sizeof(void *));
if (card->dev && netif_carrier_ok(card->dev))
netif_carrier_off(card->dev);
recover_flag = card->state;
if (qeth_stop_card(card, recovery_mode) == -ERESTARTSYS){
PRINT_WARN("Stopping card %s interrupted by user!\n",
CARD_BUS_ID(card));
return -ERESTARTSYS;
}
rc = ccw_device_set_offline(CARD_DDEV(card));
rc2 = ccw_device_set_offline(CARD_WDEV(card));
rc3 = ccw_device_set_offline(CARD_RDEV(card));
if (!rc)
rc = (rc2) ? rc2 : rc3;
if (rc)
QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
if (recover_flag == CARD_STATE_UP)
card->state = CARD_STATE_RECOVER;
qeth_notify_processes();
return 0;
}
static int
qeth_set_offline(struct ccwgroup_device *cgdev)
{
return __qeth_set_offline(cgdev, 0);
}
static int
qeth_wait_for_threads(struct qeth_card *card, unsigned long threads);
static void
qeth_remove_device(struct ccwgroup_device *cgdev)
{
struct qeth_card *card = (struct qeth_card *) cgdev->dev.driver_data;
unsigned long flags;
QETH_DBF_TEXT(setup, 3, "rmdev");
QETH_DBF_HEX(setup, 3, &card, sizeof(void *));
if (!card)
return;
if (qeth_wait_for_threads(card, 0xffffffff))
return;
if (cgdev->state == CCWGROUP_ONLINE){
card->use_hard_stop = 1;
qeth_set_offline(cgdev);
}
/* remove form our internal list */
write_lock_irqsave(&qeth_card_list.rwlock, flags);
list_del(&card->list);
write_unlock_irqrestore(&qeth_card_list.rwlock, flags);
if (card->dev)
unregister_netdev(card->dev);
qeth_remove_device_attributes(&cgdev->dev);
qeth_free_card(card);
cgdev->dev.driver_data = NULL;
put_device(&cgdev->dev);
}
static int
qeth_register_addr_entry(struct qeth_card *, struct qeth_ipaddr *);
static int
qeth_deregister_addr_entry(struct qeth_card *, struct qeth_ipaddr *);
/**
* Add/remove address to/from card's ip list, i.e. try to add or remove
* reference to/from an IP address that is already registered on the card.
* Returns:
* 0 address was on card and its reference count has been adjusted,
* but is still > 0, so nothing has to be done
* also returns 0 if card was not on card and the todo was to delete
* the address -> there is also nothing to be done
* 1 address was not on card and the todo is to add it to the card's ip
* list
* -1 address was on card and its reference count has been decremented
* to <= 0 by the todo -> address must be removed from card
*/
static int
__qeth_ref_ip_on_card(struct qeth_card *card, struct qeth_ipaddr *todo,
struct qeth_ipaddr **__addr)
{
struct qeth_ipaddr *addr;
int found = 0;
list_for_each_entry(addr, &card->ip_list, entry) {
if (card->options.layer2) {
if ((addr->type == todo->type) &&
(memcmp(&addr->mac, &todo->mac,
OSA_ADDR_LEN) == 0)) {
found = 1;
break;
}
continue;
}
if ((addr->proto == QETH_PROT_IPV4) &&
(todo->proto == QETH_PROT_IPV4) &&
(addr->type == todo->type) &&
(addr->u.a4.addr == todo->u.a4.addr) &&
(addr->u.a4.mask == todo->u.a4.mask)) {
found = 1;
break;
}
if ((addr->proto == QETH_PROT_IPV6) &&
(todo->proto == QETH_PROT_IPV6) &&
(addr->type == todo->type) &&
(addr->u.a6.pfxlen == todo->u.a6.pfxlen) &&
(memcmp(&addr->u.a6.addr, &todo->u.a6.addr,
sizeof(struct in6_addr)) == 0)) {
found = 1;
break;
}
}
if (found) {
addr->users += todo->users;
if (addr->users <= 0){
*__addr = addr;
return -1;
} else {
/* for VIPA and RXIP limit refcount to 1 */
if (addr->type != QETH_IP_TYPE_NORMAL)
addr->users = 1;
return 0;
}
}
if (todo->users > 0) {
/* for VIPA and RXIP limit refcount to 1 */
if (todo->type != QETH_IP_TYPE_NORMAL)
todo->users = 1;
return 1;
} else
return 0;
}
static inline int
__qeth_address_exists_in_list(struct list_head *list, struct qeth_ipaddr *addr,
int same_type)
{
struct qeth_ipaddr *tmp;
list_for_each_entry(tmp, list, entry) {
if ((tmp->proto == QETH_PROT_IPV4) &&
(addr->proto == QETH_PROT_IPV4) &&
((same_type && (tmp->type == addr->type)) ||
(!same_type && (tmp->type != addr->type)) ) &&
(tmp->u.a4.addr == addr->u.a4.addr) ){
return 1;
}
if ((tmp->proto == QETH_PROT_IPV6) &&
(addr->proto == QETH_PROT_IPV6) &&
((same_type && (tmp->type == addr->type)) ||
(!same_type && (tmp->type != addr->type)) ) &&
(memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
sizeof(struct in6_addr)) == 0) ) {
return 1;
}
}
return 0;
}
/*
* Add IP to be added to todo list. If there is already an "add todo"
* in this list we just incremenent the reference count.
* Returns 0 if we just incremented reference count.
*/
static int
__qeth_insert_ip_todo(struct qeth_card *card, struct qeth_ipaddr *addr, int add)
{
struct qeth_ipaddr *tmp, *t;
int found = 0;
list_for_each_entry_safe(tmp, t, card->ip_tbd_list, entry) {
if ((addr->type == QETH_IP_TYPE_DEL_ALL_MC) &&
(tmp->type == QETH_IP_TYPE_DEL_ALL_MC))
return 0;
if (card->options.layer2) {
if ((tmp->type == addr->type) &&
(tmp->is_multicast == addr->is_multicast) &&
(memcmp(&tmp->mac, &addr->mac,
OSA_ADDR_LEN) == 0)) {
found = 1;
break;
}
continue;
}
if ((tmp->proto == QETH_PROT_IPV4) &&
(addr->proto == QETH_PROT_IPV4) &&
(tmp->type == addr->type) &&
(tmp->is_multicast == addr->is_multicast) &&
(tmp->u.a4.addr == addr->u.a4.addr) &&
(tmp->u.a4.mask == addr->u.a4.mask)) {
found = 1;
break;
}
if ((tmp->proto == QETH_PROT_IPV6) &&
(addr->proto == QETH_PROT_IPV6) &&
(tmp->type == addr->type) &&
(tmp->is_multicast == addr->is_multicast) &&
(tmp->u.a6.pfxlen == addr->u.a6.pfxlen) &&
(memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
sizeof(struct in6_addr)) == 0)) {
found = 1;
break;
}
}
if (found){
if (addr->users != 0)
tmp->users += addr->users;
else
tmp->users += add? 1:-1;
if (tmp->users == 0) {
list_del(&tmp->entry);
kfree(tmp);
}
return 0;
} else {
if (addr->type == QETH_IP_TYPE_DEL_ALL_MC)
list_add(&addr->entry, card->ip_tbd_list);
else {
if (addr->users == 0)
addr->users += add? 1:-1;
if (add && (addr->type == QETH_IP_TYPE_NORMAL) &&
qeth_is_addr_covered_by_ipato(card, addr)){
QETH_DBF_TEXT(trace, 2, "tkovaddr");
addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
}
list_add_tail(&addr->entry, card->ip_tbd_list);
}
return 1;
}
}
/**
* Remove IP address from list
*/
static int
qeth_delete_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
{
unsigned long flags;
int rc = 0;
QETH_DBF_TEXT(trace, 4, "delip");
if (card->options.layer2)
QETH_DBF_HEX(trace, 4, &addr->mac, 6);
else if (addr->proto == QETH_PROT_IPV4)
QETH_DBF_HEX(trace, 4, &addr->u.a4.addr, 4);
else {
QETH_DBF_HEX(trace, 4, &addr->u.a6.addr, 8);
QETH_DBF_HEX(trace, 4, ((char *)&addr->u.a6.addr) + 8, 8);
}
spin_lock_irqsave(&card->ip_lock, flags);
rc = __qeth_insert_ip_todo(card, addr, 0);
spin_unlock_irqrestore(&card->ip_lock, flags);
return rc;
}
static int
qeth_add_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
{
unsigned long flags;
int rc = 0;
QETH_DBF_TEXT(trace, 4, "addip");
if (card->options.layer2)
QETH_DBF_HEX(trace, 4, &addr->mac, 6);
else if (addr->proto == QETH_PROT_IPV4)
QETH_DBF_HEX(trace, 4, &addr->u.a4.addr, 4);
else {
QETH_DBF_HEX(trace, 4, &addr->u.a6.addr, 8);
QETH_DBF_HEX(trace, 4, ((char *)&addr->u.a6.addr) + 8, 8);
}
spin_lock_irqsave(&card->ip_lock, flags);
rc = __qeth_insert_ip_todo(card, addr, 1);
spin_unlock_irqrestore(&card->ip_lock, flags);
return rc;
}
static inline void
__qeth_delete_all_mc(struct qeth_card *card, unsigned long *flags)
{
struct qeth_ipaddr *addr, *tmp;
int rc;
again:
list_for_each_entry_safe(addr, tmp, &card->ip_list, entry) {
if (addr->is_multicast) {
spin_unlock_irqrestore(&card->ip_lock, *flags);
rc = qeth_deregister_addr_entry(card, addr);
spin_lock_irqsave(&card->ip_lock, *flags);
if (!rc) {
list_del(&addr->entry);
kfree(addr);
goto again;
}
}
}
}
static void
qeth_set_ip_addr_list(struct qeth_card *card)
{
struct list_head *tbd_list;
struct qeth_ipaddr *todo, *addr;
unsigned long flags;
int rc;
QETH_DBF_TEXT(trace, 2, "sdiplist");
QETH_DBF_HEX(trace, 2, &card, sizeof(void *));
spin_lock_irqsave(&card->ip_lock, flags);
tbd_list = card->ip_tbd_list;
card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_ATOMIC);
if (!card->ip_tbd_list) {
QETH_DBF_TEXT(trace, 0, "silnomem");
card->ip_tbd_list = tbd_list;
spin_unlock_irqrestore(&card->ip_lock, flags);
return;
} else
INIT_LIST_HEAD(card->ip_tbd_list);
while (!list_empty(tbd_list)){
todo = list_entry(tbd_list->next, struct qeth_ipaddr, entry);
list_del(&todo->entry);
if (todo->type == QETH_IP_TYPE_DEL_ALL_MC){
__qeth_delete_all_mc(card, &flags);
kfree(todo);
continue;
}
rc = __qeth_ref_ip_on_card(card, todo, &addr);
if (rc == 0) {
/* nothing to be done; only adjusted refcount */
kfree(todo);
} else if (rc == 1) {
/* new entry to be added to on-card list */
spin_unlock_irqrestore(&card->ip_lock, flags);
rc = qeth_register_addr_entry(card, todo);
spin_lock_irqsave(&card->ip_lock, flags);
if (!rc)
list_add_tail(&todo->entry, &card->ip_list);
else
kfree(todo);
} else if (rc == -1) {
/* on-card entry to be removed */
list_del_init(&addr->entry);
spin_unlock_irqrestore(&card->ip_lock, flags);
rc = qeth_deregister_addr_entry(card, addr);
spin_lock_irqsave(&card->ip_lock, flags);
if (!rc)
kfree(addr);
else
list_add_tail(&addr->entry, &card->ip_list);
kfree(todo);
}
}
spin_unlock_irqrestore(&card->ip_lock, flags);
kfree(tbd_list);
}
static void qeth_delete_mc_addresses(struct qeth_card *);
static void qeth_add_multicast_ipv4(struct qeth_card *);
static void qeth_layer2_add_multicast(struct qeth_card *);
#ifdef CONFIG_QETH_IPV6
static void qeth_add_multicast_ipv6(struct qeth_card *);
#endif
static inline int
qeth_set_thread_start_bit(struct qeth_card *card, unsigned long thread)
{
unsigned long flags;
spin_lock_irqsave(&card->thread_mask_lock, flags);
if ( !(card->thread_allowed_mask & thread) ||
(card->thread_start_mask & thread) ) {
spin_unlock_irqrestore(&card->thread_mask_lock, flags);
return -EPERM;
}
card->thread_start_mask |= thread;
spin_unlock_irqrestore(&card->thread_mask_lock, flags);
return 0;
}
static void
qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
{
unsigned long flags;
spin_lock_irqsave(&card->thread_mask_lock, flags);
card->thread_start_mask &= ~thread;
spin_unlock_irqrestore(&card->thread_mask_lock, flags);
wake_up(&card->wait_q);
}
static void
qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
{
unsigned long flags;
spin_lock_irqsave(&card->thread_mask_lock, flags);
card->thread_running_mask &= ~thread;
spin_unlock_irqrestore(&card->thread_mask_lock, flags);
wake_up(&card->wait_q);
}
static inline int
__qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
{
unsigned long flags;
int rc = 0;
spin_lock_irqsave(&card->thread_mask_lock, flags);
if (card->thread_start_mask & thread){
if ((card->thread_allowed_mask & thread) &&
!(card->thread_running_mask & thread)){
rc = 1;
card->thread_start_mask &= ~thread;
card->thread_running_mask |= thread;
} else
rc = -EPERM;
}
spin_unlock_irqrestore(&card->thread_mask_lock, flags);
return rc;
}
static int
qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
{
int rc = 0;
wait_event(card->wait_q,
(rc = __qeth_do_run_thread(card, thread)) >= 0);
return rc;
}
static int
qeth_recover(void *ptr)
{
struct qeth_card *card;
int rc = 0;
card = (struct qeth_card *) ptr;
daemonize("qeth_recover");
QETH_DBF_TEXT(trace,2,"recover1");
QETH_DBF_HEX(trace, 2, &card, sizeof(void *));
if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
return 0;
QETH_DBF_TEXT(trace,2,"recover2");
PRINT_WARN("Recovery of device %s started ...\n",
CARD_BUS_ID(card));
card->use_hard_stop = 1;
__qeth_set_offline(card->gdev,1);
rc = __qeth_set_online(card->gdev,1);
if (!rc)
PRINT_INFO("Device %s successfully recovered!\n",
CARD_BUS_ID(card));
else
PRINT_INFO("Device %s could not be recovered!\n",
CARD_BUS_ID(card));
/* don't run another scheduled recovery */
qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
return 0;
}
void
qeth_schedule_recovery(struct qeth_card *card)
{
QETH_DBF_TEXT(trace,2,"startrec");
if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
schedule_work(&card->kernel_thread_starter);
}
static int
qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
{
unsigned long flags;
int rc = 0;
spin_lock_irqsave(&card->thread_mask_lock, flags);
QETH_DBF_TEXT_(trace, 4, " %02x%02x%02x",
(u8) card->thread_start_mask,
(u8) card->thread_allowed_mask,
(u8) card->thread_running_mask);
rc = (card->thread_start_mask & thread);
spin_unlock_irqrestore(&card->thread_mask_lock, flags);
return rc;
}
static void
qeth_start_kernel_thread(struct work_struct *work)
{
struct qeth_card *card = container_of(work, struct qeth_card, kernel_thread_starter);
QETH_DBF_TEXT(trace , 2, "strthrd");
if (card->read.state != CH_STATE_UP &&
card->write.state != CH_STATE_UP)
return;
if (qeth_do_start_thread(card, QETH_RECOVER_THREAD))
kernel_thread(qeth_recover, (void *) card, SIGCHLD);
}
static void
qeth_set_intial_options(struct qeth_card *card)
{
card->options.route4.type = NO_ROUTER;
#ifdef CONFIG_QETH_IPV6
card->options.route6.type = NO_ROUTER;
#endif /* QETH_IPV6 */
card->options.checksum_type = QETH_CHECKSUM_DEFAULT;
card->options.broadcast_mode = QETH_TR_BROADCAST_ALLRINGS;
card->options.macaddr_mode = QETH_TR_MACADDR_NONCANONICAL;
card->options.fake_broadcast = 0;
card->options.add_hhlen = DEFAULT_ADD_HHLEN;
card->options.fake_ll = 0;
if (card->info.type == QETH_CARD_TYPE_OSN)
card->options.layer2 = 1;
else
card->options.layer2 = 0;
card->options.performance_stats = 0;
}
/**
* initialize channels ,card and all state machines
*/
static int
qeth_setup_card(struct qeth_card *card)
{
QETH_DBF_TEXT(setup, 2, "setupcrd");
QETH_DBF_HEX(setup, 2, &card, sizeof(void *));
card->read.state = CH_STATE_DOWN;
card->write.state = CH_STATE_DOWN;
card->data.state = CH_STATE_DOWN;
card->state = CARD_STATE_DOWN;
card->lan_online = 0;
card->use_hard_stop = 0;
card->dev = NULL;
#ifdef CONFIG_QETH_VLAN
spin_lock_init(&card->vlanlock);
card->vlangrp = NULL;
#endif
spin_lock_init(&card->lock);
spin_lock_init(&card->ip_lock);
spin_lock_init(&card->thread_mask_lock);
card->thread_start_mask = 0;
card->thread_allowed_mask = 0;
card->thread_running_mask = 0;
INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
INIT_LIST_HEAD(&card->ip_list);
card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_KERNEL);
if (!card->ip_tbd_list) {
QETH_DBF_TEXT(setup, 0, "iptbdnom");
return -ENOMEM;
}
INIT_LIST_HEAD(card->ip_tbd_list);
INIT_LIST_HEAD(&card->cmd_waiter_list);
init_waitqueue_head(&card->wait_q);
/* intial options */
qeth_set_intial_options(card);
/* IP address takeover */
INIT_LIST_HEAD(&card->ipato.entries);
card->ipato.enabled = 0;
card->ipato.invert4 = 0;
card->ipato.invert6 = 0;
/* init QDIO stuff */
qeth_init_qdio_info(card);
return 0;
}
static int
is_1920_device (struct qeth_card *card)
{
int single_queue = 0;
struct ccw_device *ccwdev;
struct channelPath_dsc {
u8 flags;
u8 lsn;
u8 desc;
u8 chpid;
u8 swla;
u8 zeroes;
u8 chla;
u8 chpp;
} *chp_dsc;
QETH_DBF_TEXT(setup, 2, "chk_1920");
ccwdev = card->data.ccwdev;
chp_dsc = (struct channelPath_dsc *)ccw_device_get_chp_desc(ccwdev, 0);
if (chp_dsc != NULL) {
/* CHPP field bit 6 == 1 -> single queue */
single_queue = ((chp_dsc->chpp & 0x02) == 0x02);
kfree(chp_dsc);
}
QETH_DBF_TEXT_(setup, 2, "rc:%x", single_queue);
return single_queue;
}
static int
qeth_determine_card_type(struct qeth_card *card)
{
int i = 0;
QETH_DBF_TEXT(setup, 2, "detcdtyp");
card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
while (known_devices[i][4]) {
if ((CARD_RDEV(card)->id.dev_type == known_devices[i][2]) &&
(CARD_RDEV(card)->id.dev_model == known_devices[i][3])) {
card->info.type = known_devices[i][4];
card->qdio.no_out_queues = known_devices[i][8];
card->info.is_multicast_different = known_devices[i][9];
if (is_1920_device(card)) {
PRINT_INFO("Priority Queueing not able "
"due to hardware limitations!\n");
card->qdio.no_out_queues = 1;
card->qdio.default_out_queue = 0;
}
return 0;
}
i++;
}
card->info.type = QETH_CARD_TYPE_UNKNOWN;
PRINT_ERR("unknown card type on device %s\n", CARD_BUS_ID(card));
return -ENOENT;
}
static int
qeth_probe_device(struct ccwgroup_device *gdev)
{
struct qeth_card *card;
struct device *dev;
unsigned long flags;
int rc;
QETH_DBF_TEXT(setup, 2, "probedev");
dev = &gdev->dev;
if (!get_device(dev))
return -ENODEV;
QETH_DBF_TEXT_(setup, 2, "%s", gdev->dev.bus_id);
card = qeth_alloc_card();
if (!card) {
put_device(dev);
QETH_DBF_TEXT_(setup, 2, "1err%d", -ENOMEM);
return -ENOMEM;
}
card->read.ccwdev = gdev->cdev[0];
card->write.ccwdev = gdev->cdev[1];
card->data.ccwdev = gdev->cdev[2];
gdev->dev.driver_data = card;
card->gdev = gdev;
gdev->cdev[0]->handler = qeth_irq;
gdev->cdev[1]->handler = qeth_irq;
gdev->cdev[2]->handler = qeth_irq;
if ((rc = qeth_determine_card_type(card))){
PRINT_WARN("%s: not a valid card type\n", __func__);
QETH_DBF_TEXT_(setup, 2, "3err%d", rc);
put_device(dev);
qeth_free_card(card);
return rc;
}
if ((rc = qeth_setup_card(card))){
QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
put_device(dev);
qeth_free_card(card);
return rc;
}
rc = qeth_create_device_attributes(dev);
if (rc) {
put_device(dev);
qeth_free_card(card);
return rc;
}
/* insert into our internal list */
write_lock_irqsave(&qeth_card_list.rwlock, flags);
list_add_tail(&card->list, &qeth_card_list.list);
write_unlock_irqrestore(&qeth_card_list.rwlock, flags);
return rc;
}
static int
qeth_get_unitaddr(struct qeth_card *card)
{
int length;
char *prcd;
int rc;
QETH_DBF_TEXT(setup, 2, "getunit");
rc = read_conf_data(CARD_DDEV(card), (void **) &prcd, &length);
if (rc) {
PRINT_ERR("read_conf_data for device %s returned %i\n",
CARD_DDEV_ID(card), rc);
return rc;
}
card->info.chpid = prcd[30];
card->info.unit_addr2 = prcd[31];
card->info.cula = prcd[63];
card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
(prcd[0x11] == _ascebc['M']));
return 0;
}
static void
qeth_init_tokens(struct qeth_card *card)
{
card->token.issuer_rm_w = 0x00010103UL;
card->token.cm_filter_w = 0x00010108UL;
card->token.cm_connection_w = 0x0001010aUL;
card->token.ulp_filter_w = 0x0001010bUL;
card->token.ulp_connection_w = 0x0001010dUL;
}
static inline __u16
raw_devno_from_bus_id(char *id)
{
id += (strlen(id) - 4);
return (__u16) simple_strtoul(id, &id, 16);
}
/**
* setup channel
*/
static void
qeth_setup_ccw(struct qeth_channel *channel,unsigned char *iob, __u32 len)
{
struct qeth_card *card;
QETH_DBF_TEXT(trace, 4, "setupccw");
card = CARD_FROM_CDEV(channel->ccwdev);
if (channel == &card->read)
memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
else
memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
channel->ccw.count = len;
channel->ccw.cda = (__u32) __pa(iob);
}
/**
* get free buffer for ccws (IDX activation, lancmds,ipassists...)
*/
static struct qeth_cmd_buffer *
__qeth_get_buffer(struct qeth_channel *channel)
{
__u8 index;
QETH_DBF_TEXT(trace, 6, "getbuff");
index = channel->io_buf_no;
do {
if (channel->iob[index].state == BUF_STATE_FREE) {
channel->iob[index].state = BUF_STATE_LOCKED;
channel->io_buf_no = (channel->io_buf_no + 1) %
QETH_CMD_BUFFER_NO;
memset(channel->iob[index].data, 0, QETH_BUFSIZE);
return channel->iob + index;
}
index = (index + 1) % QETH_CMD_BUFFER_NO;
} while(index != channel->io_buf_no);
return NULL;
}
/**
* release command buffer
*/
static void
qeth_release_buffer(struct qeth_channel *channel, struct qeth_cmd_buffer *iob)
{
unsigned long flags;
QETH_DBF_TEXT(trace, 6, "relbuff");
spin_lock_irqsave(&channel->iob_lock, flags);
memset(iob->data, 0, QETH_BUFSIZE);
iob->state = BUF_STATE_FREE;
iob->callback = qeth_send_control_data_cb;
iob->rc = 0;
spin_unlock_irqrestore(&channel->iob_lock, flags);
}
static struct qeth_cmd_buffer *
qeth_get_buffer(struct qeth_channel *channel)
{
struct qeth_cmd_buffer *buffer = NULL;
unsigned long flags;
spin_lock_irqsave(&channel->iob_lock, flags);
buffer = __qeth_get_buffer(channel);
spin_unlock_irqrestore(&channel->iob_lock, flags);
return buffer;
}
static struct qeth_cmd_buffer *
qeth_wait_for_buffer(struct qeth_channel *channel)
{
struct qeth_cmd_buffer *buffer;
wait_event(channel->wait_q,
((buffer = qeth_get_buffer(channel)) != NULL));
return buffer;
}
static void
qeth_clear_cmd_buffers(struct qeth_channel *channel)
{
int cnt;
for (cnt=0; cnt < QETH_CMD_BUFFER_NO; cnt++)
qeth_release_buffer(channel,&channel->iob[cnt]);
channel->buf_no = 0;
channel->io_buf_no = 0;
}
/**
* start IDX for read and write channel
*/
static int
qeth_idx_activate_get_answer(struct qeth_channel *channel,
void (*idx_reply_cb)(struct qeth_channel *,
struct qeth_cmd_buffer *))
{
struct qeth_cmd_buffer *iob;
unsigned long flags;
int rc;
struct qeth_card *card;
QETH_DBF_TEXT(setup, 2, "idxanswr");
card = CARD_FROM_CDEV(channel->ccwdev);
iob = qeth_get_buffer(channel);
iob->callback = idx_reply_cb;
memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
channel->ccw.count = QETH_BUFSIZE;
channel->ccw.cda = (__u32) __pa(iob->data);
wait_event(card->wait_q,
atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
QETH_DBF_TEXT(setup, 6, "noirqpnd");
spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
rc = ccw_device_start(channel->ccwdev,
&channel->ccw,(addr_t) iob, 0, 0);
spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
if (rc) {
PRINT_ERR("qeth: Error2 in activating channel rc=%d\n",rc);
QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
atomic_set(&channel->irq_pending, 0);
wake_up(&card->wait_q);
return rc;
}
rc = wait_event_interruptible_timeout(card->wait_q,
channel->state == CH_STATE_UP, QETH_TIMEOUT);
if (rc == -ERESTARTSYS)
return rc;
if (channel->state != CH_STATE_UP){
rc = -ETIME;
QETH_DBF_TEXT_(setup, 2, "3err%d", rc);
qeth_clear_cmd_buffers(channel);
} else
rc = 0;
return rc;
}
static int
qeth_idx_activate_channel(struct qeth_channel *channel,
void (*idx_reply_cb)(struct qeth_channel *,
struct qeth_cmd_buffer *))
{
struct qeth_card *card;
struct qeth_cmd_buffer *iob;
unsigned long flags;
__u16 temp;
int rc;
card = CARD_FROM_CDEV(channel->ccwdev);
QETH_DBF_TEXT(setup, 2, "idxactch");
iob = qeth_get_buffer(channel);
iob->callback = idx_reply_cb;
memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
channel->ccw.count = IDX_ACTIVATE_SIZE;
channel->ccw.cda = (__u32) __pa(iob->data);
if (channel == &card->write) {
memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
&card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
card->seqno.trans_hdr++;
} else {
memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
&card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
}
memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
&card->token.issuer_rm_w,QETH_MPC_TOKEN_LENGTH);
memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
&card->info.func_level,sizeof(__u16));
temp = raw_devno_from_bus_id(CARD_DDEV_ID(card));
memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp, 2);
temp = (card->info.cula << 8) + card->info.unit_addr2;
memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
wait_event(card->wait_q,
atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
QETH_DBF_TEXT(setup, 6, "noirqpnd");
spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
rc = ccw_device_start(channel->ccwdev,
&channel->ccw,(addr_t) iob, 0, 0);
spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
if (rc) {
PRINT_ERR("qeth: Error1 in activating channel. rc=%d\n",rc);
QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
atomic_set(&channel->irq_pending, 0);
wake_up(&card->wait_q);
return rc;
}
rc = wait_event_interruptible_timeout(card->wait_q,
channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
if (rc == -ERESTARTSYS)
return rc;
if (channel->state != CH_STATE_ACTIVATING) {
PRINT_WARN("qeth: IDX activate timed out!\n");
QETH_DBF_TEXT_(setup, 2, "2err%d", -ETIME);
qeth_clear_cmd_buffers(channel);
return -ETIME;
}
return qeth_idx_activate_get_answer(channel,idx_reply_cb);
}
static int
qeth_peer_func_level(int level)
{
if ((level & 0xff) == 8)
return (level & 0xff) + 0x400;
if (((level >> 8) & 3) == 1)
return (level & 0xff) + 0x200;
return level;
}
static void
qeth_idx_write_cb(struct qeth_channel *channel, struct qeth_cmd_buffer *iob)
{
struct qeth_card *card;
__u16 temp;
QETH_DBF_TEXT(setup ,2, "idxwrcb");
if (channel->state == CH_STATE_DOWN) {
channel->state = CH_STATE_ACTIVATING;
goto out;
}
card = CARD_FROM_CDEV(channel->ccwdev);
if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
PRINT_ERR("IDX_ACTIVATE on write channel device %s: negative "
"reply\n", CARD_WDEV_ID(card));
goto out;
}
memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
PRINT_WARN("IDX_ACTIVATE on write channel device %s: "
"function level mismatch "
"(sent: 0x%x, received: 0x%x)\n",
CARD_WDEV_ID(card), card->info.func_level, temp);
goto out;
}
channel->state = CH_STATE_UP;
out:
qeth_release_buffer(channel, iob);
}
static int
qeth_check_idx_response(unsigned char *buffer)
{
if (!buffer)
return 0;
QETH_DBF_HEX(control, 2, buffer, QETH_DBF_CONTROL_LEN);
if ((buffer[2] & 0xc0) == 0xc0) {
PRINT_WARN("received an IDX TERMINATE "
"with cause code 0x%02x%s\n",
buffer[4],
((buffer[4] == 0x22) ?
" -- try another portname" : ""));
QETH_DBF_TEXT(trace, 2, "ckidxres");
QETH_DBF_TEXT(trace, 2, " idxterm");
QETH_DBF_TEXT_(trace, 2, " rc%d", -EIO);
return -EIO;
}
return 0;
}
static void
qeth_idx_read_cb(struct qeth_channel *channel, struct qeth_cmd_buffer *iob)
{
struct qeth_card *card;
__u16 temp;
QETH_DBF_TEXT(setup , 2, "idxrdcb");
if (channel->state == CH_STATE_DOWN) {
channel->state = CH_STATE_ACTIVATING;
goto out;
}
card = CARD_FROM_CDEV(channel->ccwdev);
if (qeth_check_idx_response(iob->data)) {
goto out;
}
if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
PRINT_ERR("IDX_ACTIVATE on read channel device %s: negative "
"reply\n", CARD_RDEV_ID(card));
goto out;
}
/**
* temporary fix for microcode bug
* to revert it,replace OR by AND
*/
if ( (!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
(card->info.type == QETH_CARD_TYPE_OSAE) )
card->info.portname_required = 1;
memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
if (temp != qeth_peer_func_level(card->info.func_level)) {
PRINT_WARN("IDX_ACTIVATE on read channel device %s: function "
"level mismatch (sent: 0x%x, received: 0x%x)\n",
CARD_RDEV_ID(card), card->info.func_level, temp);
goto out;
}
memcpy(&card->token.issuer_rm_r,
QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
QETH_MPC_TOKEN_LENGTH);
memcpy(&card->info.mcl_level[0],
QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
channel->state = CH_STATE_UP;
out:
qeth_release_buffer(channel,iob);
}
static int
qeth_issue_next_read(struct qeth_card *card)
{
int rc;
struct qeth_cmd_buffer *iob;
QETH_DBF_TEXT(trace,5,"issnxrd");
if (card->read.state != CH_STATE_UP)
return -EIO;
iob = qeth_get_buffer(&card->read);
if (!iob) {
PRINT_WARN("issue_next_read failed: no iob available!\n");
return -ENOMEM;
}
qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
QETH_DBF_TEXT(trace, 6, "noirqpnd");
rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
(addr_t) iob, 0, 0);
if (rc) {
PRINT_ERR("Error in starting next read ccw! rc=%i\n", rc);
atomic_set(&card->read.irq_pending, 0);
qeth_schedule_recovery(card);
wake_up(&card->wait_q);
}
return rc;
}
static struct qeth_reply *
qeth_alloc_reply(struct qeth_card *card)
{
struct qeth_reply *reply;
reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
if (reply){
atomic_set(&reply->refcnt, 1);
atomic_set(&reply->received, 0);
reply->card = card;
};
return reply;
}
static void
qeth_get_reply(struct qeth_reply *reply)
{
WARN_ON(atomic_read(&reply->refcnt) <= 0);
atomic_inc(&reply->refcnt);
}
static void
qeth_put_reply(struct qeth_reply *reply)
{
WARN_ON(atomic_read(&reply->refcnt) <= 0);
if (atomic_dec_and_test(&reply->refcnt))
kfree(reply);
}
static struct qeth_ipa_cmd *
qeth_check_ipa_data(struct qeth_card *card, struct qeth_cmd_buffer *iob)
{
struct qeth_ipa_cmd *cmd = NULL;
QETH_DBF_TEXT(trace,5,"chkipad");
if (IS_IPA(iob->data)){
cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
if (IS_IPA_REPLY(cmd))
return cmd;
else {
switch (cmd->hdr.command) {
case IPA_CMD_STOPLAN:
PRINT_WARN("Link failure on %s (CHPID 0x%X) - "
"there is a network problem or "
"someone pulled the cable or "
"disabled the port.\n",
QETH_CARD_IFNAME(card),
card->info.chpid);
card->lan_online = 0;
if (card->dev && netif_carrier_ok(card->dev))
netif_carrier_off(card->dev);
return NULL;
case IPA_CMD_STARTLAN:
PRINT_INFO("Link reestablished on %s "
"(CHPID 0x%X). Scheduling "
"IP address reset.\n",
QETH_CARD_IFNAME(card),
card->info.chpid);
netif_carrier_on(card->dev);
qeth_schedule_recovery(card);
return NULL;
case IPA_CMD_MODCCID:
return cmd;
case IPA_CMD_REGISTER_LOCAL_ADDR:
QETH_DBF_TEXT(trace,3, "irla");
break;
case IPA_CMD_UNREGISTER_LOCAL_ADDR:
QETH_DBF_TEXT(trace,3, "urla");
break;
default:
PRINT_WARN("Received data is IPA "
"but not a reply!\n");
break;
}
}
}
return cmd;
}
/**
* wake all waiting ipa commands
*/
static void
qeth_clear_ipacmd_list(struct qeth_card *card)
{
struct qeth_reply *reply, *r;
unsigned long flags;
QETH_DBF_TEXT(trace, 4, "clipalst");
spin_lock_irqsave(&card->lock, flags);
list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
qeth_get_reply(reply);
reply->rc = -EIO;
atomic_inc(&reply->received);
list_del_init(&reply->list);
wake_up(&reply->wait_q);
qeth_put_reply(reply);
}
spin_unlock_irqrestore(&card->lock, flags);
}
static void
qeth_send_control_data_cb(struct qeth_channel *channel,
struct qeth_cmd_buffer *iob)
{
struct qeth_card *card;
struct qeth_reply *reply, *r;
struct qeth_ipa_cmd *cmd;
unsigned long flags;
int keep_reply;
QETH_DBF_TEXT(trace,4,"sndctlcb");
card = CARD_FROM_CDEV(channel->ccwdev);
if (qeth_check_idx_response(iob->data)) {
qeth_clear_ipacmd_list(card);
qeth_schedule_recovery(card);
goto out;
}
cmd = qeth_check_ipa_data(card, iob);
if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
goto out;
/*in case of OSN : check if cmd is set */
if (card->info.type == QETH_CARD_TYPE_OSN &&
cmd &&
cmd->hdr.command != IPA_CMD_STARTLAN &&
card->osn_info.assist_cb != NULL) {
card->osn_info.assist_cb(card->dev, cmd);
goto out;
}
spin_lock_irqsave(&card->lock, flags);
list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
((cmd) && (reply->seqno == cmd->hdr.seqno))) {
qeth_get_reply(reply);
list_del_init(&reply->list);
spin_unlock_irqrestore(&card->lock, flags);
keep_reply = 0;
if (reply->callback != NULL) {
if (cmd) {
reply->offset = (__u16)((char*)cmd -
(char *)iob->data);
keep_reply = reply->callback(card,
reply,
(unsigned long)cmd);
} else
keep_reply = reply->callback(card,
reply,
(unsigned long)iob);
}
if (cmd)
reply->rc = (u16) cmd->hdr.return_code;
else if (iob->rc)
reply->rc = iob->rc;
if (keep_reply) {
spin_lock_irqsave(&card->lock, flags);
list_add_tail(&reply->list,
&card->cmd_waiter_list);
spin_unlock_irqrestore(&card->lock, flags);
} else {
atomic_inc(&reply->received);
wake_up(&reply->wait_q);
}
qeth_put_reply(reply);
goto out;
}
}
spin_unlock_irqrestore(&card->lock, flags);
out:
memcpy(&card->seqno.pdu_hdr_ack,
QETH_PDU_HEADER_SEQ_NO(iob->data),
QETH_SEQ_NO_LENGTH);
qeth_release_buffer(channel,iob);
}
static inline void
qeth_prepare_control_data(struct qeth_card *card, int len,
struct qeth_cmd_buffer *iob)
{
qeth_setup_ccw(&card->write,iob->data,len);
iob->callback = qeth_release_buffer;
memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
&card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
card->seqno.trans_hdr++;
memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
&card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
card->seqno.pdu_hdr++;
memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
&card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
QETH_DBF_HEX(control, 2, iob->data, QETH_DBF_CONTROL_LEN);
}
static int
qeth_send_control_data(struct qeth_card *card, int len,
struct qeth_cmd_buffer *iob,
int (*reply_cb)
(struct qeth_card *, struct qeth_reply*, unsigned long),
void *reply_param)
{
int rc;
unsigned long flags;
struct qeth_reply *reply = NULL;
unsigned long timeout;
QETH_DBF_TEXT(trace, 2, "sendctl");
reply = qeth_alloc_reply(card);
if (!reply) {
PRINT_WARN("Could no alloc qeth_reply!\n");
return -ENOMEM;
}
reply->callback = reply_cb;
reply->param = reply_param;
if (card->state == CARD_STATE_DOWN)
reply->seqno = QETH_IDX_COMMAND_SEQNO;
else
reply->seqno = card->seqno.ipa++;
init_waitqueue_head(&reply->wait_q);
spin_lock_irqsave(&card->lock, flags);
list_add_tail(&reply->list, &card->cmd_waiter_list);
spin_unlock_irqrestore(&card->lock, flags);
QETH_DBF_HEX(control, 2, iob->data, QETH_DBF_CONTROL_LEN);
while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
qeth_prepare_control_data(card, len, iob);
if (IS_IPA(iob->data))
timeout = jiffies + QETH_IPA_TIMEOUT;
else
timeout = jiffies + QETH_TIMEOUT;
QETH_DBF_TEXT(trace, 6, "noirqpnd");
spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
(addr_t) iob, 0, 0);
spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
if (rc){
PRINT_WARN("qeth_send_control_data: "
"ccw_device_start rc = %i\n", rc);
QETH_DBF_TEXT_(trace, 2, " err%d", rc);
spin_lock_irqsave(&card->lock, flags);
list_del_init(&reply->list);
qeth_put_reply(reply);
spin_unlock_irqrestore(&card->lock, flags);
qeth_release_buffer(iob->channel, iob);
atomic_set(&card->write.irq_pending, 0);
wake_up(&card->wait_q);
return rc;
}
while (!atomic_read(&reply->received)) {
if (time_after(jiffies, timeout)) {
spin_lock_irqsave(&reply->card->lock, flags);
list_del_init(&reply->list);
spin_unlock_irqrestore(&reply->card->lock, flags);
reply->rc = -ETIME;
atomic_inc(&reply->received);
wake_up(&reply->wait_q);
}
};
rc = reply->rc;
qeth_put_reply(reply);
return rc;
}
static int
qeth_osn_send_control_data(struct qeth_card *card, int len,
struct qeth_cmd_buffer *iob)
{
unsigned long flags;
int rc = 0;
QETH_DBF_TEXT(trace, 5, "osndctrd");
wait_event(card->wait_q,
atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
qeth_prepare_control_data(card, len, iob);
QETH_DBF_TEXT(trace, 6, "osnoirqp");
spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
(addr_t) iob, 0, 0);
spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
if (rc){
PRINT_WARN("qeth_osn_send_control_data: "
"ccw_device_start rc = %i\n", rc);
QETH_DBF_TEXT_(trace, 2, " err%d", rc);
qeth_release_buffer(iob->channel, iob);
atomic_set(&card->write.irq_pending, 0);
wake_up(&card->wait_q);
}
return rc;
}
static inline void
qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
char prot_type)
{
memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data),&prot_type,1);
memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
&card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
}
static int
qeth_osn_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
int data_len)
{
u16 s1, s2;
QETH_DBF_TEXT(trace,4,"osndipa");
qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
s2 = (u16)data_len;
memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
return qeth_osn_send_control_data(card, s1, iob);
}
static int
qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
int (*reply_cb)
(struct qeth_card *,struct qeth_reply*, unsigned long),
void *reply_param)
{
int rc;
char prot_type;
QETH_DBF_TEXT(trace,4,"sendipa");
if (card->options.layer2)
if (card->info.type == QETH_CARD_TYPE_OSN)
prot_type = QETH_PROT_OSN2;
else
prot_type = QETH_PROT_LAYER2;
else
prot_type = QETH_PROT_TCPIP;
qeth_prepare_ipa_cmd(card,iob,prot_type);
rc = qeth_send_control_data(card, IPA_CMD_LENGTH, iob,
reply_cb, reply_param);
return rc;
}
static int
qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
unsigned long data)
{
struct qeth_cmd_buffer *iob;
QETH_DBF_TEXT(setup, 2, "cmenblcb");
iob = (struct qeth_cmd_buffer *) data;
memcpy(&card->token.cm_filter_r,
QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
QETH_MPC_TOKEN_LENGTH);
QETH_DBF_TEXT_(setup, 2, " rc%d", iob->rc);
return 0;
}
static int
qeth_cm_enable(struct qeth_card *card)
{
int rc;
struct qeth_cmd_buffer *iob;
QETH_DBF_TEXT(setup,2,"cmenable");
iob = qeth_wait_for_buffer(&card->write);
memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
&card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
&card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
qeth_cm_enable_cb, NULL);
return rc;
}
static int
qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
unsigned long data)
{
struct qeth_cmd_buffer *iob;
QETH_DBF_TEXT(setup, 2, "cmsetpcb");
iob = (struct qeth_cmd_buffer *) data;
memcpy(&card->token.cm_connection_r,
QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
QETH_MPC_TOKEN_LENGTH);
QETH_DBF_TEXT_(setup, 2, " rc%d", iob->rc);
return 0;
}
static int
qeth_cm_setup(struct qeth_card *card)
{
int rc;
struct qeth_cmd_buffer *iob;
QETH_DBF_TEXT(setup,2,"cmsetup");
iob = qeth_wait_for_buffer(&card->write);
memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
&card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
&card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
&card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
qeth_cm_setup_cb, NULL);
return rc;
}
static int
qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
unsigned long data)
{
__u16 mtu, framesize;
__u16 len;
__u8 link_type;
struct qeth_cmd_buffer *iob;
QETH_DBF_TEXT(setup, 2, "ulpenacb");
iob = (struct qeth_cmd_buffer *) data;
memcpy(&card->token.ulp_filter_r,
QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
QETH_MPC_TOKEN_LENGTH);
if (qeth_get_mtu_out_of_mpc(card->info.type)) {
memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
mtu = qeth_get_mtu_outof_framesize(framesize);
if (!mtu) {
iob->rc = -EINVAL;
QETH_DBF_TEXT_(setup, 2, " rc%d", iob->rc);
return 0;
}
card->info.max_mtu = mtu;
card->info.initial_mtu = mtu;
card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
} else {
card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);
card->info.max_mtu = qeth_get_max_mtu_for_card(card->info.type);
card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
}
memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
memcpy(&link_type,
QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
card->info.link_type = link_type;
} else
card->info.link_type = 0;
QETH_DBF_TEXT_(setup, 2, " rc%d", iob->rc);
return 0;
}
static int
qeth_ulp_enable(struct qeth_card *card)
{
int rc;
char prot_type;
struct qeth_cmd_buffer *iob;
/*FIXME: trace view callbacks*/
QETH_DBF_TEXT(setup,2,"ulpenabl");
iob = qeth_wait_for_buffer(&card->write);
memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
*(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
(__u8) card->info.portno;
if (card->options.layer2)
if (card->info.type == QETH_CARD_TYPE_OSN)
prot_type = QETH_PROT_OSN2;
else
prot_type = QETH_PROT_LAYER2;
else
prot_type = QETH_PROT_TCPIP;
memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data),&prot_type,1);
memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
&card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
&card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
card->info.portname, 9);
rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
qeth_ulp_enable_cb, NULL);
return rc;
}
static inline __u16
__raw_devno_from_bus_id(char *id)
{
id += (strlen(id) - 4);
return (__u16) simple_strtoul(id, &id, 16);
}
static int
qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
unsigned long data)
{
struct qeth_cmd_buffer *iob;
QETH_DBF_TEXT(setup, 2, "ulpstpcb");
iob = (struct qeth_cmd_buffer *) data;
memcpy(&card->token.ulp_connection_r,
QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
QETH_MPC_TOKEN_LENGTH);
QETH_DBF_TEXT_(setup, 2, " rc%d", iob->rc);
return 0;
}
static int
qeth_ulp_setup(struct qeth_card *card)
{
int rc;
__u16 temp;
struct qeth_cmd_buffer *iob;
QETH_DBF_TEXT(setup,2,"ulpsetup");
iob = qeth_wait_for_buffer(&card->write);
memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
&card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
&card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
&card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
temp = __raw_devno_from_bus_id(CARD_DDEV_ID(card));
memcpy(QETH_ULP_SETUP_CUA(iob->data), &temp, 2);
temp = (card->info.cula << 8) + card->info.unit_addr2;
memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
qeth_ulp_setup_cb, NULL);
return rc;
}
static inline int
qeth_check_qdio_errors(struct qdio_buffer *buf, unsigned int qdio_error,
unsigned int siga_error, const char *dbftext)
{
if (qdio_error || siga_error) {
QETH_DBF_TEXT(trace, 2, dbftext);
QETH_DBF_TEXT(qerr, 2, dbftext);
QETH_DBF_TEXT_(qerr, 2, " F15=%02X",
buf->element[15].flags & 0xff);
QETH_DBF_TEXT_(qerr, 2, " F14=%02X",
buf->element[14].flags & 0xff);
QETH_DBF_TEXT_(qerr, 2, " qerr=%X", qdio_error);
QETH_DBF_TEXT_(qerr, 2, " serr=%X", siga_error);
return 1;
}
return 0;
}
static inline struct sk_buff *
qeth_get_skb(unsigned int length, struct qeth_hdr *hdr)
{
struct sk_buff* skb;
int add_len;
add_len = 0;
if (hdr->hdr.osn.id == QETH_HEADER_TYPE_OSN)
add_len = sizeof(struct qeth_hdr);
#ifdef CONFIG_QETH_VLAN
else
add_len = VLAN_HLEN;
#endif
skb = dev_alloc_skb(length + add_len);
if (skb && add_len)
skb_reserve(skb, add_len);
return skb;
}
static inline struct sk_buff *
qeth_get_next_skb(struct qeth_card *card, struct qdio_buffer *buffer,
struct qdio_buffer_element **__element, int *__offset,
struct qeth_hdr **hdr)
{
struct qdio_buffer_element *element = *__element;
int offset = *__offset;
struct sk_buff *skb = NULL;
int skb_len;
void *data_ptr;
int data_len;
QETH_DBF_TEXT(trace,6,"nextskb");
/* qeth_hdr must not cross element boundaries */
if (element->length < offset + sizeof(struct qeth_hdr)){
if (qeth_is_last_sbale(element))
return NULL;
element++;
offset = 0;
if (element->length < sizeof(struct qeth_hdr))
return NULL;
}
*hdr = element->addr + offset;
offset += sizeof(struct qeth_hdr);
if (card->options.layer2)
if (card->info.type == QETH_CARD_TYPE_OSN)
skb_len = (*hdr)->hdr.osn.pdu_length;
else
skb_len = (*hdr)->hdr.l2.pkt_length;
else
skb_len = (*hdr)->hdr.l3.length;
if (!skb_len)
return NULL;
if (card->options.fake_ll){
if(card->dev->type == ARPHRD_IEEE802_TR){
if (!(skb = qeth_get_skb(skb_len+QETH_FAKE_LL_LEN_TR, *hdr)))
goto no_mem;
skb_reserve(skb,QETH_FAKE_LL_LEN_TR);
} else {
if (!(skb = qeth_get_skb(skb_len+QETH_FAKE_LL_LEN_ETH, *hdr)))
goto no_mem;
skb_reserve(skb,QETH_FAKE_LL_LEN_ETH);
}
} else if (!(skb = qeth_get_skb(skb_len, *hdr)))
goto no_mem;
data_ptr = element->addr + offset;
while (skb_len) {
data_len = min(skb_len, (int)(element->length - offset));
if (data_len)
memcpy(skb_put(skb, data_len), data_ptr, data_len);
skb_len -= data_len;
if (skb_len){
if (qeth_is_last_sbale(element)){
QETH_DBF_TEXT(trace,4,"unexeob");
QETH_DBF_TEXT_(trace,4,"%s",CARD_BUS_ID(card));
QETH_DBF_TEXT(qerr,2,"unexeob");
QETH_DBF_TEXT_(qerr,2,"%s",CARD_BUS_ID(card));
QETH_DBF_HEX(misc,4,buffer,sizeof(*buffer));
dev_kfree_skb_any(skb);
card->stats.rx_errors++;
return NULL;
}
element++;
offset = 0;
data_ptr = element->addr;
} else {
offset += data_len;
}
}
*__element = element;
*__offset = offset;
return skb;
no_mem:
if (net_ratelimit()){
PRINT_WARN("No memory for packet received on %s.\n",
QETH_CARD_IFNAME(card));
QETH_DBF_TEXT(trace,2,"noskbmem");
QETH_DBF_TEXT_(trace,2,"%s",CARD_BUS_ID(card));
}
card->stats.rx_dropped++;
return NULL;
}
static inline __be16
qeth_type_trans(struct sk_buff *skb, struct net_device *dev)
{
struct qeth_card *card;
struct ethhdr *eth;
QETH_DBF_TEXT(trace,6,"typtrans");
card = (struct qeth_card *)dev->priv;
#ifdef CONFIG_TR
if ((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
(card->info.link_type == QETH_LINK_TYPE_LANE_TR))
return tr_type_trans(skb,dev);
#endif /* CONFIG_TR */
skb->mac.raw = skb->data;
skb_pull(skb, ETH_HLEN );
eth = eth_hdr(skb);
if (*eth->h_dest & 1) {
if (memcmp(eth->h_dest, dev->broadcast, ETH_ALEN) == 0)
skb->pkt_type = PACKET_BROADCAST;
else
skb->pkt_type = PACKET_MULTICAST;
} else if (memcmp(eth->h_dest, dev->dev_addr, ETH_ALEN))
skb->pkt_type = PACKET_OTHERHOST;
if (ntohs(eth->h_proto) >= 1536)
return eth->h_proto;
if (*(unsigned short *) (skb->data) == 0xFFFF)
return htons(ETH_P_802_3);
return htons(ETH_P_802_2);
}
static inline void
qeth_rebuild_skb_fake_ll_tr(struct qeth_card *card, struct sk_buff *skb,
struct qeth_hdr *hdr)
{
struct trh_hdr *fake_hdr;
struct trllc *fake_llc;
struct iphdr *ip_hdr;
QETH_DBF_TEXT(trace,5,"skbfktr");
skb->mac.raw = skb->data - QETH_FAKE_LL_LEN_TR;
/* this is a fake ethernet header */
fake_hdr = (struct trh_hdr *) skb->mac.raw;
/* the destination MAC address */
switch (skb->pkt_type){
case PACKET_MULTICAST:
switch (skb->protocol){
#ifdef CONFIG_QETH_IPV6
case __constant_htons(ETH_P_IPV6):
ndisc_mc_map((struct in6_addr *)
skb->data + QETH_FAKE_LL_V6_ADDR_POS,
fake_hdr->daddr, card->dev, 0);
break;
#endif /* CONFIG_QETH_IPV6 */
case __constant_htons(ETH_P_IP):
ip_hdr = (struct iphdr *)skb->data;
ip_tr_mc_map(ip_hdr->daddr, fake_hdr->daddr);
break;
default:
memcpy(fake_hdr->daddr, card->dev->dev_addr, TR_ALEN);
}
break;
case PACKET_BROADCAST:
memset(fake_hdr->daddr, 0xff, TR_ALEN);
break;
default:
memcpy(fake_hdr->daddr, card->dev->dev_addr, TR_ALEN);
}
/* the source MAC address */
if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
memcpy(fake_hdr->saddr, &hdr->hdr.l3.dest_addr[2], TR_ALEN);
else
memset(fake_hdr->saddr, 0, TR_ALEN);
fake_hdr->rcf=0;
fake_llc = (struct trllc*)&(fake_hdr->rcf);
fake_llc->dsap = EXTENDED_SAP;
fake_llc->ssap = EXTENDED_SAP;
fake_llc->llc = UI_CMD;
fake_llc->protid[0] = 0;
fake_llc->protid[1] = 0;
fake_llc->protid[2] = 0;
fake_llc->ethertype = ETH_P_IP;
}
static inline void
qeth_rebuild_skb_fake_ll_eth(struct qeth_card *card, struct sk_buff *skb,
struct qeth_hdr *hdr)
{
struct ethhdr *fake_hdr;
struct iphdr *ip_hdr;
QETH_DBF_TEXT(trace,5,"skbfketh");
skb->mac.raw = skb->data - QETH_FAKE_LL_LEN_ETH;
/* this is a fake ethernet header */
fake_hdr = (struct ethhdr *) skb->mac.raw;
/* the destination MAC address */
switch (skb->pkt_type){
case PACKET_MULTICAST:
switch (skb->protocol){
#ifdef CONFIG_QETH_IPV6
case __constant_htons(ETH_P_IPV6):
ndisc_mc_map((struct in6_addr *)
skb->data + QETH_FAKE_LL_V6_ADDR_POS,
fake_hdr->h_dest, card->dev, 0);
break;
#endif /* CONFIG_QETH_IPV6 */
case __constant_htons(ETH_P_IP):
ip_hdr = (struct iphdr *)skb->data;
ip_eth_mc_map(ip_hdr->daddr, fake_hdr->h_dest);
break;
default:
memcpy(fake_hdr->h_dest, card->dev->dev_addr, ETH_ALEN);
}
break;
case PACKET_BROADCAST:
memset(fake_hdr->h_dest, 0xff, ETH_ALEN);
break;
default:
memcpy(fake_hdr->h_dest, card->dev->dev_addr, ETH_ALEN);
}
/* the source MAC address */
if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
memcpy(fake_hdr->h_source, &hdr->hdr.l3.dest_addr[2], ETH_ALEN);
else
memset(fake_hdr->h_source, 0, ETH_ALEN);
/* the protocol */
fake_hdr->h_proto = skb->protocol;
}
static inline void
qeth_rebuild_skb_fake_ll(struct qeth_card *card, struct sk_buff *skb,
struct qeth_hdr *hdr)
{
if (card->dev->type == ARPHRD_IEEE802_TR)
qeth_rebuild_skb_fake_ll_tr(card, skb, hdr);
else
qeth_rebuild_skb_fake_ll_eth(card, skb, hdr);
}
static inline void
qeth_layer2_rebuild_skb(struct qeth_card *card, struct sk_buff *skb,
struct qeth_hdr *hdr)
{
skb->pkt_type = PACKET_HOST;
skb->protocol = qeth_type_trans(skb, skb->dev);
if (card->options.checksum_type == NO_CHECKSUMMING)
skb->ip_summed = CHECKSUM_UNNECESSARY;
else
skb->ip_summed = CHECKSUM_NONE;
*((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
}
static inline __u16
qeth_rebuild_skb(struct qeth_card *card, struct sk_buff *skb,
struct qeth_hdr *hdr)
{
unsigned short vlan_id = 0;
#ifdef CONFIG_QETH_IPV6
if (hdr->hdr.l3.flags & QETH_HDR_PASSTHRU) {
skb->pkt_type = PACKET_HOST;
skb->protocol = qeth_type_trans(skb, card->dev);
return 0;
}
#endif /* CONFIG_QETH_IPV6 */
skb->protocol = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
ETH_P_IP);
switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK){
case QETH_CAST_UNICAST:
skb->pkt_type = PACKET_HOST;
break;
case QETH_CAST_MULTICAST:
skb->pkt_type = PACKET_MULTICAST;
card->stats.multicast++;
break;
case QETH_CAST_BROADCAST:
skb->pkt_type = PACKET_BROADCAST;
card->stats.multicast++;
break;
case QETH_CAST_ANYCAST:
case QETH_CAST_NOCAST:
default:
skb->pkt_type = PACKET_HOST;
}
if (hdr->hdr.l3.ext_flags &
(QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME)?
hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
}
if (card->options.fake_ll)
qeth_rebuild_skb_fake_ll(card, skb, hdr);
else
skb->mac.raw = skb->data;
skb->ip_summed = card->options.checksum_type;
if (card->options.checksum_type == HW_CHECKSUMMING){
if ( (hdr->hdr.l3.ext_flags &
(QETH_HDR_EXT_CSUM_HDR_REQ |
QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
(QETH_HDR_EXT_CSUM_HDR_REQ |
QETH_HDR_EXT_CSUM_TRANSP_REQ) )
skb->ip_summed = CHECKSUM_UNNECESSARY;
else
skb->ip_summed = SW_CHECKSUMMING;
}
return vlan_id;
}
static inline void
qeth_process_inbound_buffer(struct qeth_card *card,
struct qeth_qdio_buffer *buf, int index)
{
struct qdio_buffer_element *element;
struct sk_buff *skb;
struct qeth_hdr *hdr;
int offset;
int rxrc;
__u16 vlan_tag = 0;
/* get first element of current buffer */
element = (struct qdio_buffer_element *)&buf->buffer->element[0];
offset = 0;
if (card->options.performance_stats)
card->perf_stats.bufs_rec++;
while((skb = qeth_get_next_skb(card, buf->buffer, &element,
&offset, &hdr))) {
skb->dev = card->dev;
if (hdr->hdr.l2.id == QETH_HEADER_TYPE_LAYER2)
qeth_layer2_rebuild_skb(card, skb, hdr);
else if (hdr->hdr.l3.id == QETH_HEADER_TYPE_LAYER3)
vlan_tag = qeth_rebuild_skb(card, skb, hdr);
else { /*in case of OSN*/
skb_push(skb, sizeof(struct qeth_hdr));
memcpy(skb->data, hdr, sizeof(struct qeth_hdr));
}
/* is device UP ? */
if (!(card->dev->flags & IFF_UP)){
dev_kfree_skb_any(skb);
continue;
}
if (card->info.type == QETH_CARD_TYPE_OSN)
rxrc = card->osn_info.data_cb(skb);
else
#ifdef CONFIG_QETH_VLAN
if (vlan_tag)
if (card->vlangrp)
vlan_hwaccel_rx(skb, card->vlangrp, vlan_tag);
else {
dev_kfree_skb_any(skb);
continue;
}
else
#endif
rxrc = netif_rx(skb);
card->dev->last_rx = jiffies;
card->stats.rx_packets++;
card->stats.rx_bytes += skb->len;
}
}
static inline struct qeth_buffer_pool_entry *
qeth_get_buffer_pool_entry(struct qeth_card *card)
{
struct qeth_buffer_pool_entry *entry;
QETH_DBF_TEXT(trace, 6, "gtbfplen");
if (!list_empty(&card->qdio.in_buf_pool.entry_list)) {
entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
struct qeth_buffer_pool_entry, list);
list_del_init(&entry->list);
return entry;
}
return NULL;
}
static inline void
qeth_init_input_buffer(struct qeth_card *card, struct qeth_qdio_buffer *buf)
{
struct qeth_buffer_pool_entry *pool_entry;
int i;
pool_entry = qeth_get_buffer_pool_entry(card);
/*
* since the buffer is accessed only from the input_tasklet
* there shouldn't be a need to synchronize; also, since we use
* the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off
* buffers
*/
BUG_ON(!pool_entry);
buf->pool_entry = pool_entry;
for(i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i){
buf->buffer->element[i].length = PAGE_SIZE;
buf->buffer->element[i].addr = pool_entry->elements[i];
if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
buf->buffer->element[i].flags = SBAL_FLAGS_LAST_ENTRY;
else
buf->buffer->element[i].flags = 0;
}
buf->state = QETH_QDIO_BUF_EMPTY;
}
static inline void
qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
struct qeth_qdio_out_buffer *buf)
{
int i;
struct sk_buff *skb;
/* is PCI flag set on buffer? */
if (buf->buffer->element[0].flags & 0x40)
atomic_dec(&queue->set_pci_flags_count);
while ((skb = skb_dequeue(&buf->skb_list))){
atomic_dec(&skb->users);
dev_kfree_skb_any(skb);
}
qeth_eddp_buf_release_contexts(buf);
for(i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i){
buf->buffer->element[i].length = 0;
buf->buffer->element[i].addr = NULL;
buf->buffer->element[i].flags = 0;
}
buf->next_element_to_fill = 0;
atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
}
static inline void
qeth_queue_input_buffer(struct qeth_card *card, int index)
{
struct qeth_qdio_q *queue = card->qdio.in_q;
int count;
int i;
int rc;
QETH_DBF_TEXT(trace,6,"queinbuf");
count = (index < queue->next_buf_to_init)?
card->qdio.in_buf_pool.buf_count -
(queue->next_buf_to_init - index) :
card->qdio.in_buf_pool.buf_count -
(queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
/* only requeue at a certain threshold to avoid SIGAs */
if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)){
for (i = queue->next_buf_to_init;
i < queue->next_buf_to_init + count; ++i)
qeth_init_input_buffer(card,
&queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q]);
/*
* according to old code it should be avoided to requeue all
* 128 buffers in order to benefit from PCI avoidance.
* this function keeps at least one buffer (the buffer at
* 'index') un-requeued -> this buffer is the first buffer that
* will be requeued the next time
*/
if (card->options.performance_stats) {
card->perf_stats.inbound_do_qdio_cnt++;
card->perf_stats.inbound_do_qdio_start_time =
qeth_get_micros();
}
rc = do_QDIO(CARD_DDEV(card),
QDIO_FLAG_SYNC_INPUT | QDIO_FLAG_UNDER_INTERRUPT,
0, queue->next_buf_to_init, count, NULL);
if (card->options.performance_stats)
card->perf_stats.inbound_do_qdio_time +=
qeth_get_micros() -
card->perf_stats.inbound_do_qdio_start_time;
if (rc){
PRINT_WARN("qeth_queue_input_buffer's do_QDIO "
"return %i (device %s).\n",
rc, CARD_DDEV_ID(card));
QETH_DBF_TEXT(trace,2,"qinberr");
QETH_DBF_TEXT_(trace,2,"%s",CARD_BUS_ID(card));
}
queue->next_buf_to_init = (queue->next_buf_to_init + count) %
QDIO_MAX_BUFFERS_PER_Q;
}
}
static inline void
qeth_put_buffer_pool_entry(struct qeth_card *card,
struct qeth_buffer_pool_entry *entry)
{
QETH_DBF_TEXT(trace, 6, "ptbfplen");
list_add_tail(&entry->list, &card->qdio.in_buf_pool.entry_list);
}
static void
qeth_qdio_input_handler(struct ccw_device * ccwdev, unsigned int status,
unsigned int qdio_err, unsigned int siga_err,
unsigned int queue, int first_element, int count,
unsigned long card_ptr)
{
struct net_device *net_dev;
struct qeth_card *card;
struct qeth_qdio_buffer *buffer;
int index;
int i;
QETH_DBF_TEXT(trace, 6, "qdinput");
card = (struct qeth_card *) card_ptr;
net_dev = card->dev;
if (card->options.performance_stats) {
card->perf_stats.inbound_cnt++;
card->perf_stats.inbound_start_time = qeth_get_micros();
}
if (status & QDIO_STATUS_LOOK_FOR_ERROR) {
if (status & QDIO_STATUS_ACTIVATE_CHECK_CONDITION){
QETH_DBF_TEXT(trace, 1,"qdinchk");
QETH_DBF_TEXT_(trace,1,"%s",CARD_BUS_ID(card));
QETH_DBF_TEXT_(trace,1,"%04X%04X",first_element,count);
QETH_DBF_TEXT_(trace,1,"%04X%04X", queue, status);
qeth_schedule_recovery(card);
return;
}
}
for (i = first_element; i < (first_element + count); ++i) {
index = i % QDIO_MAX_BUFFERS_PER_Q;
buffer = &card->qdio.in_q->bufs[index];
if (!((status & QDIO_STATUS_LOOK_FOR_ERROR) &&
qeth_check_qdio_errors(buffer->buffer,
qdio_err, siga_err,"qinerr")))
qeth_process_inbound_buffer(card, buffer, index);
/* clear buffer and give back to hardware */
qeth_put_buffer_pool_entry(card, buffer->pool_entry);
qeth_queue_input_buffer(card, index);
}
if (card->options.performance_stats)
card->perf_stats.inbound_time += qeth_get_micros() -
card->perf_stats.inbound_start_time;
}
static inline int
qeth_handle_send_error(struct qeth_card *card,
struct qeth_qdio_out_buffer *buffer,
unsigned int qdio_err, unsigned int siga_err)
{
int sbalf15 = buffer->buffer->element[15].flags & 0xff;
int cc = siga_err & 3;
QETH_DBF_TEXT(trace, 6, "hdsnderr");
qeth_check_qdio_errors(buffer->buffer, qdio_err, siga_err, "qouterr");
switch (cc) {
case 0:
if (qdio_err){
QETH_DBF_TEXT(trace, 1,"lnkfail");
QETH_DBF_TEXT_(trace,1,"%s",CARD_BUS_ID(card));
QETH_DBF_TEXT_(trace,1,"%04x %02x",
(u16)qdio_err, (u8)sbalf15);
return QETH_SEND_ERROR_LINK_FAILURE;
}
return QETH_SEND_ERROR_NONE;
case 2:
if (siga_err & QDIO_SIGA_ERROR_B_BIT_SET) {
QETH_DBF_TEXT(trace, 1, "SIGAcc2B");
QETH_DBF_TEXT_(trace,1,"%s",CARD_BUS_ID(card));
return QETH_SEND_ERROR_KICK_IT;
}
if ((sbalf15 >= 15) && (sbalf15 <= 31))
return QETH_SEND_ERROR_RETRY;
return QETH_SEND_ERROR_LINK_FAILURE;
/* look at qdio_error and sbalf 15 */
case 1:
QETH_DBF_TEXT(trace, 1, "SIGAcc1");
QETH_DBF_TEXT_(trace,1,"%s",CARD_BUS_ID(card));
return QETH_SEND_ERROR_LINK_FAILURE;
case 3:
default:
QETH_DBF_TEXT(trace, 1, "SIGAcc3");
QETH_DBF_TEXT_(trace,1,"%s",CARD_BUS_ID(card));
return QETH_SEND_ERROR_KICK_IT;
}
}
void
qeth_flush_buffers(struct qeth_qdio_out_q *queue, int under_int,
int index, int count)
{
struct qeth_qdio_out_buffer *buf;
int rc;
int i;
QETH_DBF_TEXT(trace, 6, "flushbuf");
for (i = index; i < index + count; ++i) {
buf = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
buf->buffer->element[buf->next_element_to_fill - 1].flags |=
SBAL_FLAGS_LAST_ENTRY;
if (queue->card->info.type == QETH_CARD_TYPE_IQD)
continue;
if (!queue->do_pack){
if ((atomic_read(&queue->used_buffers) >=
(QETH_HIGH_WATERMARK_PACK -
QETH_WATERMARK_PACK_FUZZ)) &&
!atomic_read(&queue->set_pci_flags_count)){
/* it's likely that we'll go to packing
* mode soon */
atomic_inc(&queue->set_pci_flags_count);
buf->buffer->element[0].flags |= 0x40;
}
} else {
if (!atomic_read(&queue->set_pci_flags_count)){
/*
* there's no outstanding PCI any more, so we
* have to request a PCI to be sure the the PCI
* will wake at some time in the future then we
* can flush packed buffers that might still be
* hanging around, which can happen if no
* further send was requested by the stack
*/
atomic_inc(&queue->set_pci_flags_count);
buf->buffer->element[0].flags |= 0x40;
}
}
}
queue->card->dev->trans_start = jiffies;
if (queue->card->options.performance_stats) {
queue->card->perf_stats.outbound_do_qdio_cnt++;
queue->card->perf_stats.outbound_do_qdio_start_time =
qeth_get_micros();
}
if (under_int)
rc = do_QDIO(CARD_DDEV(queue->card),
QDIO_FLAG_SYNC_OUTPUT | QDIO_FLAG_UNDER_INTERRUPT,
queue->queue_no, index, count, NULL);
else
rc = do_QDIO(CARD_DDEV(queue->card), QDIO_FLAG_SYNC_OUTPUT,
queue->queue_no, index, count, NULL);
if (queue->card->options.performance_stats)
queue->card->perf_stats.outbound_do_qdio_time +=
qeth_get_micros() -
queue->card->perf_stats.outbound_do_qdio_start_time;
if (rc){
QETH_DBF_TEXT(trace, 2, "flushbuf");
QETH_DBF_TEXT_(trace, 2, " err%d", rc);
QETH_DBF_TEXT_(trace, 2, "%s", CARD_DDEV_ID(queue->card));
queue->card->stats.tx_errors += count;
/* this must not happen under normal circumstances. if it
* happens something is really wrong -> recover */
qeth_schedule_recovery(queue->card);
return;
}
atomic_add(count, &queue->used_buffers);
if (queue->card->options.performance_stats)
queue->card->perf_stats.bufs_sent += count;
}
/*
* Switched to packing state if the number of used buffers on a queue
* reaches a certain limit.
*/
static inline void
qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
{
if (!queue->do_pack) {
if (atomic_read(&queue->used_buffers)
>= QETH_HIGH_WATERMARK_PACK){
/* switch non-PACKING -> PACKING */
QETH_DBF_TEXT(trace, 6, "np->pack");
if (queue->card->options.performance_stats)
queue->card->perf_stats.sc_dp_p++;
queue->do_pack = 1;
}
}
}
/*
* Switches from packing to non-packing mode. If there is a packing
* buffer on the queue this buffer will be prepared to be flushed.
* In that case 1 is returned to inform the caller. If no buffer
* has to be flushed, zero is returned.
*/
static inline int
qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
{
struct qeth_qdio_out_buffer *buffer;
int flush_count = 0;
if (queue->do_pack) {
if (atomic_read(&queue->used_buffers)
<= QETH_LOW_WATERMARK_PACK) {
/* switch PACKING -> non-PACKING */
QETH_DBF_TEXT(trace, 6, "pack->np");
if (queue->card->options.performance_stats)
queue->card->perf_stats.sc_p_dp++;
queue->do_pack = 0;
/* flush packing buffers */
buffer = &queue->bufs[queue->next_buf_to_fill];
if ((atomic_read(&buffer->state) ==
QETH_QDIO_BUF_EMPTY) &&
(buffer->next_element_to_fill > 0)) {
atomic_set(&buffer->state,QETH_QDIO_BUF_PRIMED);
flush_count++;
queue->next_buf_to_fill =
(queue->next_buf_to_fill + 1) %
QDIO_MAX_BUFFERS_PER_Q;
}
}
}
return flush_count;
}
/*
* Called to flush a packing buffer if no more pci flags are on the queue.
* Checks if there is a packing buffer and prepares it to be flushed.
* In that case returns 1, otherwise zero.
*/
static inline int
qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
{
struct qeth_qdio_out_buffer *buffer;
buffer = &queue->bufs[queue->next_buf_to_fill];
if((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
(buffer->next_element_to_fill > 0)){
/* it's a packing buffer */
atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
queue->next_buf_to_fill =
(queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
return 1;
}
return 0;
}
static inline void
qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
{
int index;
int flush_cnt = 0;
int q_was_packing = 0;
/*
* check if weed have to switch to non-packing mode or if
* we have to get a pci flag out on the queue
*/
if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
!atomic_read(&queue->set_pci_flags_count)){
if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
QETH_OUT_Q_UNLOCKED) {
/*
* If we get in here, there was no action in
* do_send_packet. So, we check if there is a
* packing buffer to be flushed here.
*/
netif_stop_queue(queue->card->dev);
index = queue->next_buf_to_fill;
q_was_packing = queue->do_pack;
flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
if (!flush_cnt &&
!atomic_read(&queue->set_pci_flags_count))
flush_cnt +=
qeth_flush_buffers_on_no_pci(queue);
if (queue->card->options.performance_stats &&
q_was_packing)
queue->card->perf_stats.bufs_sent_pack +=
flush_cnt;
if (flush_cnt)
qeth_flush_buffers(queue, 1, index, flush_cnt);
atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
}
}
}
static void
qeth_qdio_output_handler(struct ccw_device * ccwdev, unsigned int status,
unsigned int qdio_error, unsigned int siga_error,
unsigned int __queue, int first_element, int count,
unsigned long card_ptr)
{
struct qeth_card *card = (struct qeth_card *) card_ptr;
struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
struct qeth_qdio_out_buffer *buffer;
int i;
QETH_DBF_TEXT(trace, 6, "qdouhdl");
if (status & QDIO_STATUS_LOOK_FOR_ERROR) {
if (status & QDIO_STATUS_ACTIVATE_CHECK_CONDITION){
QETH_DBF_TEXT(trace, 2, "achkcond");
QETH_DBF_TEXT_(trace, 2, "%s", CARD_BUS_ID(card));
QETH_DBF_TEXT_(trace, 2, "%08x", status);
netif_stop_queue(card->dev);
qeth_schedule_recovery(card);
return;
}
}
if (card->options.performance_stats) {
card->perf_stats.outbound_handler_cnt++;
card->perf_stats.outbound_handler_start_time =
qeth_get_micros();
}
for(i = first_element; i < (first_element + count); ++i){
buffer = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
/*we only handle the KICK_IT error by doing a recovery */
if (qeth_handle_send_error(card, buffer,
qdio_error, siga_error)
== QETH_SEND_ERROR_KICK_IT){
netif_stop_queue(card->dev);
qeth_schedule_recovery(card);
return;
}
qeth_clear_output_buffer(queue, buffer);
}
atomic_sub(count, &queue->used_buffers);
/* check if we need to do something on this outbound queue */
if (card->info.type != QETH_CARD_TYPE_IQD)
qeth_check_outbound_queue(queue);
netif_wake_queue(queue->card->dev);
if (card->options.performance_stats)
card->perf_stats.outbound_handler_time += qeth_get_micros() -
card->perf_stats.outbound_handler_start_time;
}
static void
qeth_create_qib_param_field(struct qeth_card *card, char *param_field)
{
param_field[0] = _ascebc['P'];
param_field[1] = _ascebc['C'];
param_field[2] = _ascebc['I'];
param_field[3] = _ascebc['T'];
*((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
*((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
*((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
}
static void
qeth_create_qib_param_field_blkt(struct qeth_card *card, char *param_field)
{
param_field[16] = _ascebc['B'];
param_field[17] = _ascebc['L'];
param_field[18] = _ascebc['K'];
param_field[19] = _ascebc['T'];
*((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
*((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
*((unsigned int *) (&param_field[28])) = card->info.blkt.inter_packet_jumbo;
}
static void
qeth_initialize_working_pool_list(struct qeth_card *card)
{
struct qeth_buffer_pool_entry *entry;
QETH_DBF_TEXT(trace,5,"inwrklst");
list_for_each_entry(entry,
&card->qdio.init_pool.entry_list, init_list) {
qeth_put_buffer_pool_entry(card,entry);
}
}
static void
qeth_clear_working_pool_list(struct qeth_card *card)
{
struct qeth_buffer_pool_entry *pool_entry, *tmp;
QETH_DBF_TEXT(trace,5,"clwrklst");
list_for_each_entry_safe(pool_entry, tmp,
&card->qdio.in_buf_pool.entry_list, list){
list_del(&pool_entry->list);
}
}
static void
qeth_free_buffer_pool(struct qeth_card *card)
{
struct qeth_buffer_pool_entry *pool_entry, *tmp;
int i=0;
QETH_DBF_TEXT(trace,5,"freepool");
list_for_each_entry_safe(pool_entry, tmp,
&card->qdio.init_pool.entry_list, init_list){
for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
free_page((unsigned long)pool_entry->elements[i]);
list_del(&pool_entry->init_list);
kfree(pool_entry);
}
}
static int
qeth_alloc_buffer_pool(struct qeth_card *card)
{
struct qeth_buffer_pool_entry *pool_entry;
void *ptr;
int i, j;
QETH_DBF_TEXT(trace,5,"alocpool");
for (i = 0; i < card->qdio.init_pool.buf_count; ++i){
pool_entry = kmalloc(sizeof(*pool_entry), GFP_KERNEL);
if (!pool_entry){
qeth_free_buffer_pool(card);
return -ENOMEM;
}
for(j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j){
ptr = (void *) __get_free_page(GFP_KERNEL|GFP_DMA);
if (!ptr) {
while (j > 0)
free_page((unsigned long)
pool_entry->elements[--j]);
kfree(pool_entry);
qeth_free_buffer_pool(card);
return -ENOMEM;
}
pool_entry->elements[j] = ptr;
}
list_add(&pool_entry->init_list,
&card->qdio.init_pool.entry_list);
}
return 0;
}
int
qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
{
QETH_DBF_TEXT(trace, 2, "realcbp");
if ((card->state != CARD_STATE_DOWN) &&
(card->state != CARD_STATE_RECOVER))
return -EPERM;
/* TODO: steel/add buffers from/to a running card's buffer pool (?) */
qeth_clear_working_pool_list(card);
qeth_free_buffer_pool(card);
card->qdio.in_buf_pool.buf_count = bufcnt;
card->qdio.init_pool.buf_count = bufcnt;
return qeth_alloc_buffer_pool(card);
}
static int
qeth_alloc_qdio_buffers(struct qeth_card *card)
{
int i, j;
QETH_DBF_TEXT(setup, 2, "allcqdbf");
if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
return 0;
card->qdio.in_q = kmalloc(sizeof(struct qeth_qdio_q),
GFP_KERNEL|GFP_DMA);
if (!card->qdio.in_q)
goto out_nomem;
QETH_DBF_TEXT(setup, 2, "inq");
QETH_DBF_HEX(setup, 2, &card->qdio.in_q, sizeof(void *));
memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
/* give inbound qeth_qdio_buffers their qdio_buffers */
for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
card->qdio.in_q->bufs[i].buffer =
&card->qdio.in_q->qdio_bufs[i];
/* inbound buffer pool */
if (qeth_alloc_buffer_pool(card))
goto out_freeinq;
/* outbound */
card->qdio.out_qs =
kmalloc(card->qdio.no_out_queues *
sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
if (!card->qdio.out_qs)
goto out_freepool;
for (i = 0; i < card->qdio.no_out_queues; ++i) {
card->qdio.out_qs[i] = kmalloc(sizeof(struct qeth_qdio_out_q),
GFP_KERNEL|GFP_DMA);
if (!card->qdio.out_qs[i])
goto out_freeoutq;
QETH_DBF_TEXT_(setup, 2, "outq %i", i);
QETH_DBF_HEX(setup, 2, &card->qdio.out_qs[i], sizeof(void *));
memset(card->qdio.out_qs[i], 0, sizeof(struct qeth_qdio_out_q));
card->qdio.out_qs[i]->queue_no = i;
/* give outbound qeth_qdio_buffers their qdio_buffers */
for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j){
card->qdio.out_qs[i]->bufs[j].buffer =
&card->qdio.out_qs[i]->qdio_bufs[j];
skb_queue_head_init(&card->qdio.out_qs[i]->bufs[j].
skb_list);
lockdep_set_class(
&card->qdio.out_qs[i]->bufs[j].skb_list.lock,
&qdio_out_skb_queue_key);
INIT_LIST_HEAD(&card->qdio.out_qs[i]->bufs[j].ctx_list);
}
}
return 0;
out_freeoutq:
while (i > 0)
kfree(card->qdio.out_qs[--i]);
kfree(card->qdio.out_qs);
out_freepool:
qeth_free_buffer_pool(card);
out_freeinq:
kfree(card->qdio.in_q);
out_nomem:
atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
return -ENOMEM;
}
static void
qeth_free_qdio_buffers(struct qeth_card *card)
{
int i, j;
QETH_DBF_TEXT(trace, 2, "freeqdbf");
if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
QETH_QDIO_UNINITIALIZED)
return;
kfree(card->qdio.in_q);
/* inbound buffer pool */
qeth_free_buffer_pool(card);
/* free outbound qdio_qs */
for (i = 0; i < card->qdio.no_out_queues; ++i){
for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
qeth_clear_output_buffer(card->qdio.out_qs[i],
&card->qdio.out_qs[i]->bufs[j]);
kfree(card->qdio.out_qs[i]);
}
kfree(card->qdio.out_qs);
}
static void
qeth_clear_qdio_buffers(struct qeth_card *card)
{
int i, j;
QETH_DBF_TEXT(trace, 2, "clearqdbf");
/* clear outbound buffers to free skbs */
for (i = 0; i < card->qdio.no_out_queues; ++i)
if (card->qdio.out_qs[i]){
for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
qeth_clear_output_buffer(card->qdio.out_qs[i],
&card->qdio.out_qs[i]->bufs[j]);
}
}
static void
qeth_init_qdio_info(struct qeth_card *card)
{
QETH_DBF_TEXT(setup, 4, "intqdinf");
atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
/* inbound */
card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
}
static int
qeth_init_qdio_queues(struct qeth_card *card)
{
int i, j;
int rc;
QETH_DBF_TEXT(setup, 2, "initqdqs");
/* inbound queue */
memset(card->qdio.in_q->qdio_bufs, 0,
QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
qeth_initialize_working_pool_list(card);
/*give only as many buffers to hardware as we have buffer pool entries*/
for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
card->qdio.in_q->next_buf_to_init = card->qdio.in_buf_pool.buf_count - 1;
rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
card->qdio.in_buf_pool.buf_count - 1, NULL);
if (rc) {
QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
return rc;
}
rc = qdio_synchronize(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0);
if (rc) {
QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
return rc;
}
/* outbound queue */
for (i = 0; i < card->qdio.no_out_queues; ++i){
memset(card->qdio.out_qs[i]->qdio_bufs, 0,
QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j){
qeth_clear_output_buffer(card->qdio.out_qs[i],
&card->qdio.out_qs[i]->bufs[j]);
}
card->qdio.out_qs[i]->card = card;
card->qdio.out_qs[i]->next_buf_to_fill = 0;
card->qdio.out_qs[i]->do_pack = 0;
atomic_set(&card->qdio.out_qs[i]->used_buffers,0);
atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
atomic_set(&card->qdio.out_qs[i]->state,
QETH_OUT_Q_UNLOCKED);
}
return 0;
}
static int
qeth_qdio_establish(struct qeth_card *card)
{
struct qdio_initialize init_data;
char *qib_param_field;
struct qdio_buffer **in_sbal_ptrs;
struct qdio_buffer **out_sbal_ptrs;
int i, j, k;
int rc = 0;
QETH_DBF_TEXT(setup, 2, "qdioest");
qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
GFP_KERNEL);
if (!qib_param_field)
return -ENOMEM;
qeth_create_qib_param_field(card, qib_param_field);
qeth_create_qib_param_field_blkt(card, qib_param_field);
in_sbal_ptrs = kmalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
GFP_KERNEL);
if (!in_sbal_ptrs) {
kfree(qib_param_field);
return -ENOMEM;
}
for(i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
in_sbal_ptrs[i] = (struct qdio_buffer *)
virt_to_phys(card->qdio.in_q->bufs[i].buffer);
out_sbal_ptrs =
kmalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
sizeof(void *), GFP_KERNEL);
if (!out_sbal_ptrs) {
kfree(in_sbal_ptrs);
kfree(qib_param_field);
return -ENOMEM;
}
for(i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
for(j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k){
out_sbal_ptrs[k] = (struct qdio_buffer *)
virt_to_phys(card->qdio.out_qs[i]->
bufs[j].buffer);
}
memset(&init_data, 0, sizeof(struct qdio_initialize));
init_data.cdev = CARD_DDEV(card);
init_data.q_format = qeth_get_qdio_q_format(card);
init_data.qib_param_field_format = 0;
init_data.qib_param_field = qib_param_field;
init_data.min_input_threshold = QETH_MIN_INPUT_THRESHOLD;
init_data.max_input_threshold = QETH_MAX_INPUT_THRESHOLD;
init_data.min_output_threshold = QETH_MIN_OUTPUT_THRESHOLD;
init_data.max_output_threshold = QETH_MAX_OUTPUT_THRESHOLD;
init_data.no_input_qs = 1;
init_data.no_output_qs = card->qdio.no_out_queues;
init_data.input_handler = (qdio_handler_t *)
qeth_qdio_input_handler;
init_data.output_handler = (qdio_handler_t *)
qeth_qdio_output_handler;
init_data.int_parm = (unsigned long) card;
init_data.flags = QDIO_INBOUND_0COPY_SBALS |
QDIO_OUTBOUND_0COPY_SBALS |
QDIO_USE_OUTBOUND_PCIS;
init_data.input_sbal_addr_array = (void **) in_sbal_ptrs;
init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED)
if ((rc = qdio_initialize(&init_data)))
atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
kfree(out_sbal_ptrs);
kfree(in_sbal_ptrs);
kfree(qib_param_field);
return rc;
}
static int
qeth_qdio_activate(struct qeth_card *card)
{
QETH_DBF_TEXT(setup,3,"qdioact");
return qdio_activate(CARD_DDEV(card), 0);
}
static int
qeth_clear_channel(struct qeth_channel *channel)
{
unsigned long flags;
struct qeth_card *card;
int rc;
QETH_DBF_TEXT(trace,3,"clearch");
card = CARD_FROM_CDEV(channel->ccwdev);
spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
if (rc)
return rc;
rc = wait_event_interruptible_timeout(card->wait_q,
channel->state==CH_STATE_STOPPED, QETH_TIMEOUT);
if (rc == -ERESTARTSYS)
return rc;
if (channel->state != CH_STATE_STOPPED)
return -ETIME;
channel->state = CH_STATE_DOWN;
return 0;
}
static int
qeth_halt_channel(struct qeth_channel *channel)
{
unsigned long flags;
struct qeth_card *card;
int rc;
QETH_DBF_TEXT(trace,3,"haltch");
card = CARD_FROM_CDEV(channel->ccwdev);
spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
if (rc)
return rc;
rc = wait_event_interruptible_timeout(card->wait_q,
channel->state==CH_STATE_HALTED, QETH_TIMEOUT);
if (rc == -ERESTARTSYS)
return rc;
if (channel->state != CH_STATE_HALTED)
return -ETIME;
return 0;
}
static int
qeth_halt_channels(struct qeth_card *card)
{
int rc1 = 0, rc2=0, rc3 = 0;
QETH_DBF_TEXT(trace,3,"haltchs");
rc1 = qeth_halt_channel(&card->read);
rc2 = qeth_halt_channel(&card->write);
rc3 = qeth_halt_channel(&card->data);
if (rc1)
return rc1;
if (rc2)
return rc2;
return rc3;
}
static int
qeth_clear_channels(struct qeth_card *card)
{
int rc1 = 0, rc2=0, rc3 = 0;
QETH_DBF_TEXT(trace,3,"clearchs");
rc1 = qeth_clear_channel(&card->read);
rc2 = qeth_clear_channel(&card->write);
rc3 = qeth_clear_channel(&card->data);
if (rc1)
return rc1;
if (rc2)
return rc2;
return rc3;
}
static int
qeth_clear_halt_card(struct qeth_card *card, int halt)
{
int rc = 0;
QETH_DBF_TEXT(trace,3,"clhacrd");
QETH_DBF_HEX(trace, 3, &card, sizeof(void *));
if (halt)
rc = qeth_halt_channels(card);
if (rc)
return rc;
return qeth_clear_channels(card);
}
static int
qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
{
int rc = 0;
QETH_DBF_TEXT(trace,3,"qdioclr");
switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
QETH_QDIO_CLEANING)) {
case QETH_QDIO_ESTABLISHED:
if ((rc = qdio_cleanup(CARD_DDEV(card),
(card->info.type == QETH_CARD_TYPE_IQD) ?
QDIO_FLAG_CLEANUP_USING_HALT :
QDIO_FLAG_CLEANUP_USING_CLEAR)))
QETH_DBF_TEXT_(trace, 3, "1err%d", rc);
atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
break;
case QETH_QDIO_CLEANING:
return rc;
default:
break;
}
if ((rc = qeth_clear_halt_card(card, use_halt)))
QETH_DBF_TEXT_(trace, 3, "2err%d", rc);
card->state = CARD_STATE_DOWN;
return rc;
}
static int
qeth_dm_act(struct qeth_card *card)
{
int rc;
struct qeth_cmd_buffer *iob;
QETH_DBF_TEXT(setup,2,"dmact");
iob = qeth_wait_for_buffer(&card->write);
memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
&card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
&card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
return rc;
}
static int
qeth_mpc_initialize(struct qeth_card *card)
{
int rc;
QETH_DBF_TEXT(setup,2,"mpcinit");
if ((rc = qeth_issue_next_read(card))){
QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
return rc;
}
if ((rc = qeth_cm_enable(card))){
QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
goto out_qdio;
}
if ((rc = qeth_cm_setup(card))){
QETH_DBF_TEXT_(setup, 2, "3err%d", rc);
goto out_qdio;
}
if ((rc = qeth_ulp_enable(card))){
QETH_DBF_TEXT_(setup, 2, "4err%d", rc);
goto out_qdio;
}
if ((rc = qeth_ulp_setup(card))){
QETH_DBF_TEXT_(setup, 2, "5err%d", rc);
goto out_qdio;
}
if ((rc = qeth_alloc_qdio_buffers(card))){
QETH_DBF_TEXT_(setup, 2, "5err%d", rc);
goto out_qdio;
}
if ((rc = qeth_qdio_establish(card))){
QETH_DBF_TEXT_(setup, 2, "6err%d", rc);
qeth_free_qdio_buffers(card);
goto out_qdio;
}
if ((rc = qeth_qdio_activate(card))){
QETH_DBF_TEXT_(setup, 2, "7err%d", rc);
goto out_qdio;
}
if ((rc = qeth_dm_act(card))){
QETH_DBF_TEXT_(setup, 2, "8err%d", rc);
goto out_qdio;
}
return 0;
out_qdio:
qeth_qdio_clear_card(card, card->info.type!=QETH_CARD_TYPE_IQD);
return rc;
}
static struct net_device *
qeth_get_netdevice(enum qeth_card_types type, enum qeth_link_types linktype)
{
struct net_device *dev = NULL;
switch (type) {
case QETH_CARD_TYPE_OSAE:
switch (linktype) {
case QETH_LINK_TYPE_LANE_TR:
case QETH_LINK_TYPE_HSTR:
#ifdef CONFIG_TR
dev = alloc_trdev(0);
#endif /* CONFIG_TR */
break;
default:
dev = alloc_etherdev(0);
}
break;
case QETH_CARD_TYPE_IQD:
dev = alloc_netdev(0, "hsi%d", ether_setup);
break;
case QETH_CARD_TYPE_OSN:
dev = alloc_netdev(0, "osn%d", ether_setup);
break;
default:
dev = alloc_etherdev(0);
}
return dev;
}
/*hard_header fake function; used in case fake_ll is set */
static int
qeth_fake_header(struct sk_buff *skb, struct net_device *dev,
unsigned short type, void *daddr, void *saddr,
unsigned len)
{
if(dev->type == ARPHRD_IEEE802_TR){
struct trh_hdr *hdr;
hdr = (struct trh_hdr *)skb_push(skb, QETH_FAKE_LL_LEN_TR);
memcpy(hdr->saddr, dev->dev_addr, TR_ALEN);
memcpy(hdr->daddr, "FAKELL", TR_ALEN);
return QETH_FAKE_LL_LEN_TR;
} else {
struct ethhdr *hdr;
hdr = (struct ethhdr *)skb_push(skb, QETH_FAKE_LL_LEN_ETH);
memcpy(hdr->h_source, dev->dev_addr, ETH_ALEN);
memcpy(hdr->h_dest, "FAKELL", ETH_ALEN);
if (type != ETH_P_802_3)
hdr->h_proto = htons(type);
else
hdr->h_proto = htons(len);
return QETH_FAKE_LL_LEN_ETH;
}
}
static inline int
qeth_send_packet(struct qeth_card *, struct sk_buff *);
static int
qeth_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
int rc;
struct qeth_card *card;
QETH_DBF_TEXT(trace, 6, "hrdstxmi");
card = (struct qeth_card *)dev->priv;
if (skb==NULL) {
card->stats.tx_dropped++;
card->stats.tx_errors++;
/* return OK; otherwise ksoftirqd goes to 100% */
return NETDEV_TX_OK;
}
if ((card->state != CARD_STATE_UP) || !card->lan_online) {
card->stats.tx_dropped++;
card->stats.tx_errors++;
card->stats.tx_carrier_errors++;
dev_kfree_skb_any(skb);
/* return OK; otherwise ksoftirqd goes to 100% */
return NETDEV_TX_OK;
}
if (card->options.performance_stats) {
card->perf_stats.outbound_cnt++;
card->perf_stats.outbound_start_time = qeth_get_micros();
}
netif_stop_queue(dev);
if ((rc = qeth_send_packet(card, skb))) {
if (rc == -EBUSY) {
return NETDEV_TX_BUSY;
} else {
card->stats.tx_errors++;
card->stats.tx_dropped++;
dev_kfree_skb_any(skb);
/*set to OK; otherwise ksoftirqd goes to 100% */
rc = NETDEV_TX_OK;
}
}
netif_wake_queue(dev);
if (card->options.performance_stats)
card->perf_stats.outbound_time += qeth_get_micros() -
card->perf_stats.outbound_start_time;
return rc;
}
static int
qeth_verify_vlan_dev(struct net_device *dev, struct qeth_card *card)
{
int rc = 0;
#ifdef CONFIG_QETH_VLAN
struct vlan_group *vg;
int i;
if (!(vg = card->vlangrp))
return rc;
for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++){
if (vg->vlan_devices[i] == dev){
rc = QETH_VLAN_CARD;
break;
}
}
if (rc && !(VLAN_DEV_INFO(dev)->real_dev->priv == (void *)card))
return 0;
#endif
return rc;
}
static int
qeth_verify_dev(struct net_device *dev)
{
struct qeth_card *card;
unsigned long flags;
int rc = 0;
read_lock_irqsave(&qeth_card_list.rwlock, flags);
list_for_each_entry(card, &qeth_card_list.list, list){
if (card->dev == dev){
rc = QETH_REAL_CARD;
break;
}
rc = qeth_verify_vlan_dev(dev, card);
if (rc)
break;
}
read_unlock_irqrestore(&qeth_card_list.rwlock, flags);
return rc;
}
static struct qeth_card *
qeth_get_card_from_dev(struct net_device *dev)
{
struct qeth_card *card = NULL;
int rc;
rc = qeth_verify_dev(dev);
if (rc == QETH_REAL_CARD)
card = (struct qeth_card *)dev->priv;
else if (rc == QETH_VLAN_CARD)
card = (struct qeth_card *)
VLAN_DEV_INFO(dev)->real_dev->priv;
QETH_DBF_TEXT_(trace, 4, "%d", rc);
return card ;
}
static void
qeth_tx_timeout(struct net_device *dev)
{
struct qeth_card *card;
card = (struct qeth_card *) dev->priv;
card->stats.tx_errors++;
qeth_schedule_recovery(card);
}
static int
qeth_open(struct net_device *dev)
{
struct qeth_card *card;
QETH_DBF_TEXT(trace, 4, "qethopen");
card = (struct qeth_card *) dev->priv;
if (card->state != CARD_STATE_SOFTSETUP)
return -ENODEV;
if ( (card->info.type != QETH_CARD_TYPE_OSN) &&
(card->options.layer2) &&
(!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
QETH_DBF_TEXT(trace,4,"nomacadr");
return -EPERM;
}
card->data.state = CH_STATE_UP;
card->state = CARD_STATE_UP;
card->dev->flags |= IFF_UP;
netif_start_queue(dev);
if (!card->lan_online && netif_carrier_ok(dev))
netif_carrier_off(dev);
return 0;
}
static int
qeth_stop(struct net_device *dev)
{
struct qeth_card *card;
QETH_DBF_TEXT(trace, 4, "qethstop");
card = (struct qeth_card *) dev->priv;
netif_tx_disable(dev);
card->dev->flags &= ~IFF_UP;
if (card->state == CARD_STATE_UP)
card->state = CARD_STATE_SOFTSETUP;
return 0;
}
static inline int
qeth_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
{
int cast_type = RTN_UNSPEC;
if (card->info.type == QETH_CARD_TYPE_OSN)
return cast_type;
if (skb->dst && skb->dst->neighbour){
cast_type = skb->dst->neighbour->type;
if ((cast_type == RTN_BROADCAST) ||
(cast_type == RTN_MULTICAST) ||
(cast_type == RTN_ANYCAST))
return cast_type;
else
return RTN_UNSPEC;
}
/* try something else */
if (skb->protocol == ETH_P_IPV6)
return (skb->nh.raw[24] == 0xff) ? RTN_MULTICAST : 0;
else if (skb->protocol == ETH_P_IP)
return ((skb->nh.raw[16] & 0xf0) == 0xe0) ? RTN_MULTICAST : 0;
/* ... */
if (!memcmp(skb->data, skb->dev->broadcast, 6))
return RTN_BROADCAST;
else {
u16 hdr_mac;
hdr_mac = *((u16 *)skb->data);
/* tr multicast? */
switch (card->info.link_type) {
case QETH_LINK_TYPE_HSTR:
case QETH_LINK_TYPE_LANE_TR:
if ((hdr_mac == QETH_TR_MAC_NC) ||
(hdr_mac == QETH_TR_MAC_C))
return RTN_MULTICAST;
break;
/* eth or so multicast? */
default:
if ((hdr_mac == QETH_ETH_MAC_V4) ||
(hdr_mac == QETH_ETH_MAC_V6))
return RTN_MULTICAST;
}
}
return cast_type;
}
static inline int
qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
int ipv, int cast_type)
{
if (!ipv && (card->info.type == QETH_CARD_TYPE_OSAE))
return card->qdio.default_out_queue;
switch (card->qdio.no_out_queues) {
case 4:
if (cast_type && card->info.is_multicast_different)
return card->info.is_multicast_different &
(card->qdio.no_out_queues - 1);
if (card->qdio.do_prio_queueing && (ipv == 4)) {
if (card->qdio.do_prio_queueing==QETH_PRIO_Q_ING_TOS){
if (skb->nh.iph->tos & IP_TOS_NOTIMPORTANT)
return 3;
if (skb->nh.iph->tos & IP_TOS_HIGHRELIABILITY)
return 2;
if (skb->nh.iph->tos & IP_TOS_HIGHTHROUGHPUT)
return 1;
if (skb->nh.iph->tos & IP_TOS_LOWDELAY)
return 0;
}
if (card->qdio.do_prio_queueing==QETH_PRIO_Q_ING_PREC)
return 3 - (skb->nh.iph->tos >> 6);
} else if (card->qdio.do_prio_queueing && (ipv == 6)) {
/* TODO: IPv6!!! */
}
return card->qdio.default_out_queue;
case 1: /* fallthrough for single-out-queue 1920-device */
default:
return card->qdio.default_out_queue;
}
}
static inline int
qeth_get_ip_version(struct sk_buff *skb)
{
switch (skb->protocol) {
case ETH_P_IPV6:
return 6;
case ETH_P_IP:
return 4;
default:
return 0;
}
}
static inline struct qeth_hdr *
__qeth_prepare_skb(struct qeth_card *card, struct sk_buff *skb, int ipv)
{
#ifdef CONFIG_QETH_VLAN
u16 *tag;
if (card->vlangrp && vlan_tx_tag_present(skb) &&
((ipv == 6) || card->options.layer2) ) {
/*
* Move the mac addresses (6 bytes src, 6 bytes dest)
* to the beginning of the new header. We are using three
* memcpys instead of one memmove to save cycles.
*/
skb_push(skb, VLAN_HLEN);
memcpy(skb->data, skb->data + 4, 4);
memcpy(skb->data + 4, skb->data + 8, 4);
memcpy(skb->data + 8, skb->data + 12, 4);
tag = (u16 *)(skb->data + 12);
/*
* first two bytes = ETH_P_8021Q (0x8100)
* second two bytes = VLANID
*/
*tag = __constant_htons(ETH_P_8021Q);
*(tag + 1) = htons(vlan_tx_tag_get(skb));
}
#endif
return ((struct qeth_hdr *)
qeth_push_skb(card, skb, sizeof(struct qeth_hdr)));
}
static inline void
__qeth_free_new_skb(struct sk_buff *orig_skb, struct sk_buff *new_skb)
{
if (orig_skb != new_skb)
dev_kfree_skb_any(new_skb);
}
static inline struct sk_buff *
qeth_prepare_skb(struct qeth_card *card, struct sk_buff *skb,
struct qeth_hdr **hdr, int ipv)
{
struct sk_buff *new_skb, *new_skb2;
QETH_DBF_TEXT(trace, 6, "prepskb");
new_skb = skb;
new_skb = qeth_pskb_unshare(skb, GFP_ATOMIC);
if (!new_skb)
return NULL;
new_skb2 = qeth_realloc_headroom(card, new_skb,
sizeof(struct qeth_hdr));
if (!new_skb2) {
__qeth_free_new_skb(skb, new_skb);
return NULL;
}
if (new_skb != skb)
__qeth_free_new_skb(new_skb2, new_skb);
new_skb = new_skb2;
*hdr = __qeth_prepare_skb(card, new_skb, ipv);
if (*hdr == NULL) {
__qeth_free_new_skb(skb, new_skb);
return NULL;
}
return new_skb;
}
static inline u8
qeth_get_qeth_hdr_flags4(int cast_type)
{
if (cast_type == RTN_MULTICAST)
return QETH_CAST_MULTICAST;
if (cast_type == RTN_BROADCAST)
return QETH_CAST_BROADCAST;
return QETH_CAST_UNICAST;
}
static inline u8
qeth_get_qeth_hdr_flags6(int cast_type)
{
u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
if (cast_type == RTN_MULTICAST)
return ct | QETH_CAST_MULTICAST;
if (cast_type == RTN_ANYCAST)
return ct | QETH_CAST_ANYCAST;
if (cast_type == RTN_BROADCAST)
return ct | QETH_CAST_BROADCAST;
return ct | QETH_CAST_UNICAST;
}
static inline void
qeth_layer2_get_packet_type(struct qeth_card *card, struct qeth_hdr *hdr,
struct sk_buff *skb)
{
__u16 hdr_mac;
if (!memcmp(skb->data+QETH_HEADER_SIZE,
skb->dev->broadcast,6)) { /* broadcast? */
*(__u32 *)hdr->hdr.l2.flags |=
QETH_LAYER2_FLAG_BROADCAST << 8;
return;
}
hdr_mac=*((__u16*)skb->data);
/* tr multicast? */
switch (card->info.link_type) {
case QETH_LINK_TYPE_HSTR:
case QETH_LINK_TYPE_LANE_TR:
if ((hdr_mac == QETH_TR_MAC_NC) ||
(hdr_mac == QETH_TR_MAC_C) )
*(__u32 *)hdr->hdr.l2.flags |=
QETH_LAYER2_FLAG_MULTICAST << 8;
else
*(__u32 *)hdr->hdr.l2.flags |=
QETH_LAYER2_FLAG_UNICAST << 8;
break;
/* eth or so multicast? */
default:
if ( (hdr_mac==QETH_ETH_MAC_V4) ||
(hdr_mac==QETH_ETH_MAC_V6) )
*(__u32 *)hdr->hdr.l2.flags |=
QETH_LAYER2_FLAG_MULTICAST << 8;
else
*(__u32 *)hdr->hdr.l2.flags |=
QETH_LAYER2_FLAG_UNICAST << 8;
}
}
static inline void
qeth_layer2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
struct sk_buff *skb, int cast_type)
{
memset(hdr, 0, sizeof(struct qeth_hdr));
hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
/* set byte 0 to "0x02" and byte 3 to casting flags */
if (cast_type==RTN_MULTICAST)
*(__u32 *)hdr->hdr.l2.flags |= QETH_LAYER2_FLAG_MULTICAST << 8;
else if (cast_type==RTN_BROADCAST)
*(__u32 *)hdr->hdr.l2.flags |= QETH_LAYER2_FLAG_BROADCAST << 8;
else
qeth_layer2_get_packet_type(card, hdr, skb);
hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
#ifdef CONFIG_QETH_VLAN
/* VSWITCH relies on the VLAN
* information to be present in
* the QDIO header */
if ((card->vlangrp != NULL) &&
vlan_tx_tag_present(skb)) {
*(__u32 *)hdr->hdr.l2.flags |= QETH_LAYER2_FLAG_VLAN << 8;
hdr->hdr.l2.vlan_id = vlan_tx_tag_get(skb);
}
#endif
}
void
qeth_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
struct sk_buff *skb, int ipv, int cast_type)
{
QETH_DBF_TEXT(trace, 6, "fillhdr");
memset(hdr, 0, sizeof(struct qeth_hdr));
if (card->options.layer2) {
qeth_layer2_fill_header(card, hdr, skb, cast_type);
return;
}
hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
hdr->hdr.l3.ext_flags = 0;
#ifdef CONFIG_QETH_VLAN
/*
* before we're going to overwrite this location with next hop ip.
* v6 uses passthrough, v4 sets the tag in the QDIO header.
*/
if (card->vlangrp && vlan_tx_tag_present(skb)) {
hdr->hdr.l3.ext_flags = (ipv == 4) ?
QETH_HDR_EXT_VLAN_FRAME :
QETH_HDR_EXT_INCLUDE_VLAN_TAG;
hdr->hdr.l3.vlan_id = vlan_tx_tag_get(skb);
}
#endif /* CONFIG_QETH_VLAN */
hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
if (ipv == 4) { /* IPv4 */
hdr->hdr.l3.flags = qeth_get_qeth_hdr_flags4(cast_type);
memset(hdr->hdr.l3.dest_addr, 0, 12);
if ((skb->dst) && (skb->dst->neighbour)) {
*((u32 *) (&hdr->hdr.l3.dest_addr[12])) =
*((u32 *) skb->dst->neighbour->primary_key);
} else {
/* fill in destination address used in ip header */
*((u32 *) (&hdr->hdr.l3.dest_addr[12])) = skb->nh.iph->daddr;
}
} else if (ipv == 6) { /* IPv6 or passthru */
hdr->hdr.l3.flags = qeth_get_qeth_hdr_flags6(cast_type);
if ((skb->dst) && (skb->dst->neighbour)) {
memcpy(hdr->hdr.l3.dest_addr,
skb->dst->neighbour->primary_key, 16);
} else {
/* fill in destination address used in ip header */
memcpy(hdr->hdr.l3.dest_addr, &skb->nh.ipv6h->daddr, 16);
}
} else { /* passthrough */
if((skb->dev->type == ARPHRD_IEEE802_TR) &&
!memcmp(skb->data + sizeof(struct qeth_hdr) +
sizeof(__u16), skb->dev->broadcast, 6)) {
hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
QETH_HDR_PASSTHRU;
} else if (!memcmp(skb->data + sizeof(struct qeth_hdr),
skb->dev->broadcast, 6)) { /* broadcast? */
hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
QETH_HDR_PASSTHRU;
} else {
hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
}
}
}
static inline void
__qeth_fill_buffer(struct sk_buff *skb, struct qdio_buffer *buffer,
int is_tso, int *next_element_to_fill)
{
int length = skb->len;
int length_here;
int element;
char *data;
int first_lap ;
element = *next_element_to_fill;
data = skb->data;
first_lap = (is_tso == 0 ? 1 : 0);
while (length > 0) {
/* length_here is the remaining amount of data in this page */
length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
if (length < length_here)
length_here = length;
buffer->element[element].addr = data;
buffer->element[element].length = length_here;
length -= length_here;
if (!length) {
if (first_lap)
buffer->element[element].flags = 0;
else
buffer->element[element].flags =
SBAL_FLAGS_LAST_FRAG;
} else {
if (first_lap)
buffer->element[element].flags =
SBAL_FLAGS_FIRST_FRAG;
else
buffer->element[element].flags =
SBAL_FLAGS_MIDDLE_FRAG;
}
data += length_here;
element++;
first_lap = 0;
}
*next_element_to_fill = element;
}
static inline int
qeth_fill_buffer(struct qeth_qdio_out_q *queue,
struct qeth_qdio_out_buffer *buf,
struct sk_buff *skb)
{
struct qdio_buffer *buffer;
struct qeth_hdr_tso *hdr;
int flush_cnt = 0, hdr_len, large_send = 0;
QETH_DBF_TEXT(trace, 6, "qdfillbf");
buffer = buf->buffer;
atomic_inc(&skb->users);
skb_queue_tail(&buf->skb_list, skb);
hdr = (struct qeth_hdr_tso *) skb->data;
/*check first on TSO ....*/
if (hdr->hdr.hdr.l3.id == QETH_HEADER_TYPE_TSO) {
int element = buf->next_element_to_fill;
hdr_len = sizeof(struct qeth_hdr_tso) + hdr->ext.dg_hdr_len;
/*fill first buffer entry only with header information */
buffer->element[element].addr = skb->data;
buffer->element[element].length = hdr_len;
buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG;
buf->next_element_to_fill++;
skb->data += hdr_len;
skb->len -= hdr_len;
large_send = 1;
}
if (skb_shinfo(skb)->nr_frags == 0)
__qeth_fill_buffer(skb, buffer, large_send,
(int *)&buf->next_element_to_fill);
else
__qeth_fill_buffer_frag(skb, buffer, large_send,
(int *)&buf->next_element_to_fill);
if (!queue->do_pack) {
QETH_DBF_TEXT(trace, 6, "fillbfnp");
/* set state to PRIMED -> will be flushed */
atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
flush_cnt = 1;
} else {
QETH_DBF_TEXT(trace, 6, "fillbfpa");
if (queue->card->options.performance_stats)
queue->card->perf_stats.skbs_sent_pack++;
if (buf->next_element_to_fill >=
QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
/*
* packed buffer if full -> set state PRIMED
* -> will be flushed
*/
atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
flush_cnt = 1;
}
}
return flush_cnt;
}
static inline int
qeth_do_send_packet_fast(struct qeth_card *card, struct qeth_qdio_out_q *queue,
struct sk_buff *skb, struct qeth_hdr *hdr,
int elements_needed,
struct qeth_eddp_context *ctx)
{
struct qeth_qdio_out_buffer *buffer;
int buffers_needed = 0;
int flush_cnt = 0;
int index;
QETH_DBF_TEXT(trace, 6, "dosndpfa");
/* spin until we get the queue ... */
while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
/* ... now we've got the queue */
index = queue->next_buf_to_fill;
buffer = &queue->bufs[queue->next_buf_to_fill];
/*
* check if buffer is empty to make sure that we do not 'overtake'
* ourselves and try to fill a buffer that is already primed
*/
if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
goto out;
if (ctx == NULL)
queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
QDIO_MAX_BUFFERS_PER_Q;
else {
buffers_needed = qeth_eddp_check_buffers_for_context(queue,ctx);
if (buffers_needed < 0)
goto out;
queue->next_buf_to_fill =
(queue->next_buf_to_fill + buffers_needed) %
QDIO_MAX_BUFFERS_PER_Q;
}
atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
if (ctx == NULL) {
qeth_fill_buffer(queue, buffer, skb);
qeth_flush_buffers(queue, 0, index, 1);
} else {
flush_cnt = qeth_eddp_fill_buffer(queue, ctx, index);
WARN_ON(buffers_needed != flush_cnt);
qeth_flush_buffers(queue, 0, index, flush_cnt);
}
return 0;
out:
atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
return -EBUSY;
}
static inline int
qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
struct sk_buff *skb, struct qeth_hdr *hdr,
int elements_needed, struct qeth_eddp_context *ctx)
{
struct qeth_qdio_out_buffer *buffer;
int start_index;
int flush_count = 0;
int do_pack = 0;
int tmp;
int rc = 0;
QETH_DBF_TEXT(trace, 6, "dosndpkt");
/* spin until we get the queue ... */
while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
start_index = queue->next_buf_to_fill;
buffer = &queue->bufs[queue->next_buf_to_fill];
/*
* check if buffer is empty to make sure that we do not 'overtake'
* ourselves and try to fill a buffer that is already primed
*/
if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
return -EBUSY;
}
/* check if we need to switch packing state of this queue */
qeth_switch_to_packing_if_needed(queue);
if (queue->do_pack){
do_pack = 1;
if (ctx == NULL) {
/* does packet fit in current buffer? */
if((QETH_MAX_BUFFER_ELEMENTS(card) -
buffer->next_element_to_fill) < elements_needed){
/* ... no -> set state PRIMED */
atomic_set(&buffer->state,QETH_QDIO_BUF_PRIMED);
flush_count++;
queue->next_buf_to_fill =
(queue->next_buf_to_fill + 1) %
QDIO_MAX_BUFFERS_PER_Q;
buffer = &queue->bufs[queue->next_buf_to_fill];
/* we did a step forward, so check buffer state
* again */
if (atomic_read(&buffer->state) !=
QETH_QDIO_BUF_EMPTY){
qeth_flush_buffers(queue, 0, start_index, flush_count);
atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
return -EBUSY;
}
}
} else {
/* check if we have enough elements (including following
* free buffers) to handle eddp context */
if (qeth_eddp_check_buffers_for_context(queue,ctx) < 0){
printk("eddp tx_dropped 1\n");
rc = -EBUSY;
goto out;
}
}
}
if (ctx == NULL)
tmp = qeth_fill_buffer(queue, buffer, skb);
else {
tmp = qeth_eddp_fill_buffer(queue,ctx,queue->next_buf_to_fill);
if (tmp < 0) {
printk("eddp tx_dropped 2\n");
rc = - EBUSY;
goto out;
}
}
queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
QDIO_MAX_BUFFERS_PER_Q;
flush_count += tmp;
out:
if (flush_count)
qeth_flush_buffers(queue, 0, start_index, flush_count);
else if (!atomic_read(&queue->set_pci_flags_count))
atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
/*
* queue->state will go from LOCKED -> UNLOCKED or from
* LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
* (switch packing state or flush buffer to get another pci flag out).
* In that case we will enter this loop
*/
while (atomic_dec_return(&queue->state)){
flush_count = 0;
start_index = queue->next_buf_to_fill;
/* check if we can go back to non-packing state */
flush_count += qeth_switch_to_nonpacking_if_needed(queue);
/*
* check if we need to flush a packing buffer to get a pci
* flag out on the queue
*/
if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
flush_count += qeth_flush_buffers_on_no_pci(queue);
if (flush_count)
qeth_flush_buffers(queue, 0, start_index, flush_count);
}
/* at this point the queue is UNLOCKED again */
if (queue->card->options.performance_stats && do_pack)
queue->card->perf_stats.bufs_sent_pack += flush_count;
return rc;
}
static inline int
qeth_get_elements_no(struct qeth_card *card, void *hdr,
struct sk_buff *skb, int elems)
{
int elements_needed = 0;
if (skb_shinfo(skb)->nr_frags > 0)
elements_needed = (skb_shinfo(skb)->nr_frags + 1);
if (elements_needed == 0)
elements_needed = 1 + (((((unsigned long) hdr) % PAGE_SIZE)
+ skb->len) >> PAGE_SHIFT);
if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)){
PRINT_ERR("Invalid size of IP packet "
"(Number=%d / Length=%d). Discarded.\n",
(elements_needed+elems), skb->len);
return 0;
}
return elements_needed;
}
static inline int
qeth_send_packet(struct qeth_card *card, struct sk_buff *skb)
{
int ipv = 0;
int cast_type;
struct qeth_qdio_out_q *queue;
struct qeth_hdr *hdr = NULL;
int elements_needed = 0;
enum qeth_large_send_types large_send = QETH_LARGE_SEND_NO;
struct qeth_eddp_context *ctx = NULL;
int tx_bytes = skb->len;
unsigned short nr_frags = skb_shinfo(skb)->nr_frags;
unsigned short tso_size = skb_shinfo(skb)->gso_size;
struct sk_buff *new_skb, *new_skb2;
int rc;
QETH_DBF_TEXT(trace, 6, "sendpkt");
new_skb = skb;
if ((card->info.type == QETH_CARD_TYPE_OSN) &&
(skb->protocol == htons(ETH_P_IPV6)))
return -EPERM;
cast_type = qeth_get_cast_type(card, skb);
if ((cast_type == RTN_BROADCAST) &&
(card->info.broadcast_capable == 0))
return -EPERM;
queue = card->qdio.out_qs
[qeth_get_priority_queue(card, skb, ipv, cast_type)];
if (!card->options.layer2) {
ipv = qeth_get_ip_version(skb);
if ((card->dev->hard_header == qeth_fake_header) && ipv) {
new_skb = qeth_pskb_unshare(skb, GFP_ATOMIC);
if (!new_skb)
return -ENOMEM;
if(card->dev->type == ARPHRD_IEEE802_TR){
skb_pull(new_skb, QETH_FAKE_LL_LEN_TR);
} else {
skb_pull(new_skb, QETH_FAKE_LL_LEN_ETH);
}
}
}
if (skb_is_gso(skb))
large_send = card->options.large_send;
/* check on OSN device*/
if (card->info.type == QETH_CARD_TYPE_OSN)
hdr = (struct qeth_hdr *)new_skb->data;
/*are we able to do TSO ? */
if ((large_send == QETH_LARGE_SEND_TSO) &&
(cast_type == RTN_UNSPEC)) {
rc = qeth_tso_prepare_packet(card, new_skb, ipv, cast_type);
if (rc) {
__qeth_free_new_skb(skb, new_skb);
return rc;
}
elements_needed++;
} else if (card->info.type != QETH_CARD_TYPE_OSN) {
new_skb2 = qeth_prepare_skb(card, new_skb, &hdr, ipv);
if (!new_skb2) {
__qeth_free_new_skb(skb, new_skb);
return -EINVAL;
}
if (new_skb != skb)
__qeth_free_new_skb(new_skb2, new_skb);
new_skb = new_skb2;
qeth_fill_header(card, hdr, new_skb, ipv, cast_type);
}
if (large_send == QETH_LARGE_SEND_EDDP) {
ctx = qeth_eddp_create_context(card, new_skb, hdr);
if (ctx == NULL) {
__qeth_free_new_skb(skb, new_skb);
PRINT_WARN("could not create eddp context\n");
return -EINVAL;
}
} else {
int elems = qeth_get_elements_no(card,(void*) hdr, new_skb,
elements_needed);
if (!elems) {
__qeth_free_new_skb(skb, new_skb);
return -EINVAL;
}
elements_needed += elems;
}
if (card->info.type != QETH_CARD_TYPE_IQD)
rc = qeth_do_send_packet(card, queue, new_skb, hdr,
elements_needed, ctx);
else
rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
elements_needed, ctx);
if (!rc) {
card->stats.tx_packets++;
card->stats.tx_bytes += tx_bytes;
if (new_skb != skb)
dev_kfree_skb_any(skb);
if (card->options.performance_stats) {
if (tso_size &&
!(large_send == QETH_LARGE_SEND_NO)) {
card->perf_stats.large_send_bytes += tx_bytes;
card->perf_stats.large_send_cnt++;
}
if (nr_frags > 0) {
card->perf_stats.sg_skbs_sent++;
/* nr_frags + skb->data */
card->perf_stats.sg_frags_sent +=
nr_frags + 1;
}
}
} else {
card->stats.tx_dropped++;
__qeth_free_new_skb(skb, new_skb);
}
if (ctx != NULL) {
/* drop creator's reference */
qeth_eddp_put_context(ctx);
/* free skb; it's not referenced by a buffer */
if (!rc)
dev_kfree_skb_any(new_skb);
}
return rc;
}
static int
qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
{
struct qeth_card *card = (struct qeth_card *) dev->priv;
int rc = 0;
switch(regnum){
case MII_BMCR: /* Basic mode control register */
rc = BMCR_FULLDPLX;
if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH)&&
(card->info.link_type != QETH_LINK_TYPE_OSN) &&
(card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
rc |= BMCR_SPEED100;
break;
case MII_BMSR: /* Basic mode status register */
rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
BMSR_100BASE4;
break;
case MII_PHYSID1: /* PHYS ID 1 */
rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
dev->dev_addr[2];
rc = (rc >> 5) & 0xFFFF;
break;
case MII_PHYSID2: /* PHYS ID 2 */
rc = (dev->dev_addr[2] << 10) & 0xFFFF;
break;
case MII_ADVERTISE: /* Advertisement control reg */
rc = ADVERTISE_ALL;
break;
case MII_LPA: /* Link partner ability reg */
rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
LPA_100BASE4 | LPA_LPACK;
break;
case MII_EXPANSION: /* Expansion register */
break;
case MII_DCOUNTER: /* disconnect counter */
break;
case MII_FCSCOUNTER: /* false carrier counter */
break;
case MII_NWAYTEST: /* N-way auto-neg test register */
break;
case MII_RERRCOUNTER: /* rx error counter */
rc = card->stats.rx_errors;
break;
case MII_SREVISION: /* silicon revision */
break;
case MII_RESV1: /* reserved 1 */
break;
case MII_LBRERROR: /* loopback, rx, bypass error */
break;
case MII_PHYADDR: /* physical address */
break;
case MII_RESV2: /* reserved 2 */
break;
case MII_TPISTATUS: /* TPI status for 10mbps */
break;
case MII_NCONFIG: /* network interface config */
break;
default:
break;
}
return rc;
}
static inline const char *
qeth_arp_get_error_cause(int *rc)
{
switch (*rc) {
case QETH_IPA_ARP_RC_FAILED:
*rc = -EIO;
return "operation failed";
case QETH_IPA_ARP_RC_NOTSUPP:
*rc = -EOPNOTSUPP;
return "operation not supported";
case QETH_IPA_ARP_RC_OUT_OF_RANGE:
*rc = -EINVAL;
return "argument out of range";
case QETH_IPA_ARP_RC_Q_NOTSUPP:
*rc = -EOPNOTSUPP;
return "query operation not supported";
case QETH_IPA_ARP_RC_Q_NO_DATA:
*rc = -ENOENT;
return "no query data available";
default:
return "unknown error";
}
}
static int
qeth_send_simple_setassparms(struct qeth_card *, enum qeth_ipa_funcs,
__u16, long);
static int
qeth_arp_set_no_entries(struct qeth_card *card, int no_entries)
{
int tmp;
int rc;
QETH_DBF_TEXT(trace,3,"arpstnoe");
/*
* currently GuestLAN only supports the ARP assist function
* IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
* thus we say EOPNOTSUPP for this ARP function
*/
if (card->info.guestlan)
return -EOPNOTSUPP;
if (!qeth_is_supported(card,IPA_ARP_PROCESSING)) {
PRINT_WARN("ARP processing not supported "
"on %s!\n", QETH_CARD_IFNAME(card));
return -EOPNOTSUPP;
}
rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
no_entries);
if (rc) {
tmp = rc;
PRINT_WARN("Could not set number of ARP entries on %s: "
"%s (0x%x/%d)\n",
QETH_CARD_IFNAME(card), qeth_arp_get_error_cause(&rc),
tmp, tmp);
}
return rc;
}
static inline void
qeth_copy_arp_entries_stripped(struct qeth_arp_query_info *qinfo,
struct qeth_arp_query_data *qdata,
int entry_size, int uentry_size)
{
char *entry_ptr;
char *uentry_ptr;
int i;
entry_ptr = (char *)&qdata->data;
uentry_ptr = (char *)(qinfo->udata + qinfo->udata_offset);
for (i = 0; i < qdata->no_entries; ++i){
/* strip off 32 bytes "media specific information" */
memcpy(uentry_ptr, (entry_ptr + 32), entry_size - 32);
entry_ptr += entry_size;
uentry_ptr += uentry_size;
}
}
static int
qeth_arp_query_cb(struct qeth_card *card, struct qeth_reply *reply,
unsigned long data)
{
struct qeth_ipa_cmd *cmd;
struct qeth_arp_query_data *qdata;
struct qeth_arp_query_info *qinfo;
int entry_size;
int uentry_size;
int i;
QETH_DBF_TEXT(trace,4,"arpquecb");
qinfo = (struct qeth_arp_query_info *) reply->param;
cmd = (struct qeth_ipa_cmd *) data;
if (cmd->hdr.return_code) {
QETH_DBF_TEXT_(trace,4,"qaer1%i", cmd->hdr.return_code);
return 0;
}
if (cmd->data.setassparms.hdr.return_code) {
cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
QETH_DBF_TEXT_(trace,4,"qaer2%i", cmd->hdr.return_code);
return 0;
}
qdata = &cmd->data.setassparms.data.query_arp;
switch(qdata->reply_bits){
case 5:
uentry_size = entry_size = sizeof(struct qeth_arp_qi_entry5);
if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
uentry_size = sizeof(struct qeth_arp_qi_entry5_short);
break;
case 7:
/* fall through to default */
default:
/* tr is the same as eth -> entry7 */
uentry_size = entry_size = sizeof(struct qeth_arp_qi_entry7);
if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
uentry_size = sizeof(struct qeth_arp_qi_entry7_short);
break;
}
/* check if there is enough room in userspace */
if ((qinfo->udata_len - qinfo->udata_offset) <
qdata->no_entries * uentry_size){
QETH_DBF_TEXT_(trace, 4, "qaer3%i", -ENOMEM);
cmd->hdr.return_code = -ENOMEM;
PRINT_WARN("query ARP user space buffer is too small for "
"the returned number of ARP entries. "
"Aborting query!\n");
goto out_error;
}
QETH_DBF_TEXT_(trace, 4, "anore%i",
cmd->data.setassparms.hdr.number_of_replies);
QETH_DBF_TEXT_(trace, 4, "aseqn%i", cmd->data.setassparms.hdr.seq_no);
QETH_DBF_TEXT_(trace, 4, "anoen%i", qdata->no_entries);
if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) {
/* strip off "media specific information" */
qeth_copy_arp_entries_stripped(qinfo, qdata, entry_size,
uentry_size);
} else
/*copy entries to user buffer*/
memcpy(qinfo->udata + qinfo->udata_offset,
(char *)&qdata->data, qdata->no_entries*uentry_size);
qinfo->no_entries += qdata->no_entries;
qinfo->udata_offset += (qdata->no_entries*uentry_size);
/* check if all replies received ... */
if (cmd->data.setassparms.hdr.seq_no <
cmd->data.setassparms.hdr.number_of_replies)
return 1;
memcpy(qinfo->udata, &qinfo->no_entries, 4);
/* keep STRIP_ENTRIES flag so the user program can distinguish
* stripped entries from normal ones */
if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET,&qdata->reply_bits,2);
return 0;
out_error:
i = 0;
memcpy(qinfo->udata, &i, 4);
return 0;
}
static int
qeth_send_ipa_arp_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
int len, int (*reply_cb)(struct qeth_card *,
struct qeth_reply *,
unsigned long),
void *reply_param)
{
QETH_DBF_TEXT(trace,4,"sendarp");
memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
&card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
reply_cb, reply_param);
}
static int
qeth_send_ipa_snmp_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
int len, int (*reply_cb)(struct qeth_card *,
struct qeth_reply *,
unsigned long),
void *reply_param)
{
u16 s1, s2;
QETH_DBF_TEXT(trace,4,"sendsnmp");
memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
&card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
/* adjust PDU length fields in IPA_PDU_HEADER */
s1 = (u32) IPA_PDU_HEADER_SIZE + len;
s2 = (u32) len;
memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
reply_cb, reply_param);
}
static struct qeth_cmd_buffer *
qeth_get_setassparms_cmd(struct qeth_card *, enum qeth_ipa_funcs,
__u16, __u16, enum qeth_prot_versions);
static int
qeth_arp_query(struct qeth_card *card, char __user *udata)
{
struct qeth_cmd_buffer *iob;
struct qeth_arp_query_info qinfo = {0, };
int tmp;
int rc;
QETH_DBF_TEXT(trace,3,"arpquery");
if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
IPA_ARP_PROCESSING)) {
PRINT_WARN("ARP processing not supported "
"on %s!\n", QETH_CARD_IFNAME(card));
return -EOPNOTSUPP;
}
/* get size of userspace buffer and mask_bits -> 6 bytes */
if (copy_from_user(&qinfo, udata, 6))
return -EFAULT;
if (!(qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL)))
return -ENOMEM;
qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
IPA_CMD_ASS_ARP_QUERY_INFO,
sizeof(int),QETH_PROT_IPV4);
rc = qeth_send_ipa_arp_cmd(card, iob,
QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
qeth_arp_query_cb, (void *)&qinfo);
if (rc) {
tmp = rc;
PRINT_WARN("Error while querying ARP cache on %s: %s "
"(0x%x/%d)\n",
QETH_CARD_IFNAME(card), qeth_arp_get_error_cause(&rc),
tmp, tmp);
if (copy_to_user(udata, qinfo.udata, 4))
rc = -EFAULT;
} else {
if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
rc = -EFAULT;
}
kfree(qinfo.udata);
return rc;
}
/**
* SNMP command callback
*/
static int
qeth_snmp_command_cb(struct qeth_card *card, struct qeth_reply *reply,
unsigned long sdata)
{
struct qeth_ipa_cmd *cmd;
struct qeth_arp_query_info *qinfo;
struct qeth_snmp_cmd *snmp;
unsigned char *data;
__u16 data_len;
QETH_DBF_TEXT(trace,3,"snpcmdcb");
cmd = (struct qeth_ipa_cmd *) sdata;
data = (unsigned char *)((char *)cmd - reply->offset);
qinfo = (struct qeth_arp_query_info *) reply->param;
snmp = &cmd->data.setadapterparms.data.snmp;
if (cmd->hdr.return_code) {
QETH_DBF_TEXT_(trace,4,"scer1%i", cmd->hdr.return_code);
return 0;
}
if (cmd->data.setadapterparms.hdr.return_code) {
cmd->hdr.return_code = cmd->data.setadapterparms.hdr.return_code;
QETH_DBF_TEXT_(trace,4,"scer2%i", cmd->hdr.return_code);
return 0;
}
data_len = *((__u16*)QETH_IPA_PDU_LEN_PDU1(data));
if (cmd->data.setadapterparms.hdr.seq_no == 1)
data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
else
data_len -= (__u16)((char*)&snmp->request - (char *)cmd);
/* check if there is enough room in userspace */
if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
QETH_DBF_TEXT_(trace, 4, "scer3%i", -ENOMEM);
cmd->hdr.return_code = -ENOMEM;
return 0;
}
QETH_DBF_TEXT_(trace, 4, "snore%i",
cmd->data.setadapterparms.hdr.used_total);
QETH_DBF_TEXT_(trace, 4, "sseqn%i", cmd->data.setadapterparms.hdr.seq_no);
/*copy entries to user buffer*/
if (cmd->data.setadapterparms.hdr.seq_no == 1) {
memcpy(qinfo->udata + qinfo->udata_offset,
(char *)snmp,
data_len + offsetof(struct qeth_snmp_cmd,data));
qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
} else {
memcpy(qinfo->udata + qinfo->udata_offset,
(char *)&snmp->request, data_len);
}
qinfo->udata_offset += data_len;
/* check if all replies received ... */
QETH_DBF_TEXT_(trace, 4, "srtot%i",
cmd->data.setadapterparms.hdr.used_total);
QETH_DBF_TEXT_(trace, 4, "srseq%i",
cmd->data.setadapterparms.hdr.seq_no);
if (cmd->data.setadapterparms.hdr.seq_no <
cmd->data.setadapterparms.hdr.used_total)
return 1;
return 0;
}
static struct qeth_cmd_buffer *
qeth_get_ipacmd_buffer(struct qeth_card *, enum qeth_ipa_cmds,
enum qeth_prot_versions );
static struct qeth_cmd_buffer *
qeth_get_adapter_cmd(struct qeth_card *card, __u32 command, __u32 cmdlen)
{
struct qeth_cmd_buffer *iob;
struct qeth_ipa_cmd *cmd;
iob = qeth_get_ipacmd_buffer(card,IPA_CMD_SETADAPTERPARMS,
QETH_PROT_IPV4);
cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
cmd->data.setadapterparms.hdr.command_code = command;
cmd->data.setadapterparms.hdr.used_total = 1;
cmd->data.setadapterparms.hdr.seq_no = 1;
return iob;
}
/**
* function to send SNMP commands to OSA-E card
*/
static int
qeth_snmp_command(struct qeth_card *card, char __user *udata)
{
struct qeth_cmd_buffer *iob;
struct qeth_ipa_cmd *cmd;
struct qeth_snmp_ureq *ureq;
int req_len;
struct qeth_arp_query_info qinfo = {0, };
int rc = 0;
QETH_DBF_TEXT(trace,3,"snmpcmd");
if (card->info.guestlan)
return -EOPNOTSUPP;
if ((!qeth_adp_supported(card,IPA_SETADP_SET_SNMP_CONTROL)) &&
(!card->options.layer2) ) {
PRINT_WARN("SNMP Query MIBS not supported "
"on %s!\n", QETH_CARD_IFNAME(card));
return -EOPNOTSUPP;
}
/* skip 4 bytes (data_len struct member) to get req_len */
if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
return -EFAULT;
ureq = kmalloc(req_len+sizeof(struct qeth_snmp_ureq_hdr), GFP_KERNEL);
if (!ureq) {
QETH_DBF_TEXT(trace, 2, "snmpnome");
return -ENOMEM;
}
if (copy_from_user(ureq, udata,
req_len+sizeof(struct qeth_snmp_ureq_hdr))){
kfree(ureq);
return -EFAULT;
}
qinfo.udata_len = ureq->hdr.data_len;
if (!(qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL))){
kfree(ureq);
return -ENOMEM;
}
qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
QETH_SNMP_SETADP_CMDLENGTH + req_len);
cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
qeth_snmp_command_cb, (void *)&qinfo);
if (rc)
PRINT_WARN("SNMP command failed on %s: (0x%x)\n",
QETH_CARD_IFNAME(card), rc);
else {
if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
rc = -EFAULT;
}
kfree(ureq);
kfree(qinfo.udata);
return rc;
}
static int
qeth_default_setassparms_cb(struct qeth_card *, struct qeth_reply *,
unsigned long);
static int
qeth_default_setadapterparms_cb(struct qeth_card *card,
struct qeth_reply *reply,
unsigned long data);
static int
qeth_send_setassparms(struct qeth_card *, struct qeth_cmd_buffer *,
__u16, long,
int (*reply_cb)
(struct qeth_card *, struct qeth_reply *, unsigned long),
void *reply_param);
static int
qeth_arp_add_entry(struct qeth_card *card, struct qeth_arp_cache_entry *entry)
{
struct qeth_cmd_buffer *iob;
char buf[16];
int tmp;
int rc;
QETH_DBF_TEXT(trace,3,"arpadent");
/*
* currently GuestLAN only supports the ARP assist function
* IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
* thus we say EOPNOTSUPP for this ARP function
*/
if (card->info.guestlan)
return -EOPNOTSUPP;
if (!qeth_is_supported(card,IPA_ARP_PROCESSING)) {
PRINT_WARN("ARP processing not supported "
"on %s!\n", QETH_CARD_IFNAME(card));
return -EOPNOTSUPP;
}
iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
IPA_CMD_ASS_ARP_ADD_ENTRY,
sizeof(struct qeth_arp_cache_entry),
QETH_PROT_IPV4);
rc = qeth_send_setassparms(card, iob,
sizeof(struct qeth_arp_cache_entry),
(unsigned long) entry,
qeth_default_setassparms_cb, NULL);
if (rc) {
tmp = rc;
qeth_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
PRINT_WARN("Could not add ARP entry for address %s on %s: "
"%s (0x%x/%d)\n",
buf, QETH_CARD_IFNAME(card),
qeth_arp_get_error_cause(&rc), tmp, tmp);
}
return rc;
}
static int
qeth_arp_remove_entry(struct qeth_card *card, struct qeth_arp_cache_entry *entry)
{
struct qeth_cmd_buffer *iob;
char buf[16] = {0, };
int tmp;
int rc;
QETH_DBF_TEXT(trace,3,"arprment");
/*
* currently GuestLAN only supports the ARP assist function
* IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
* thus we say EOPNOTSUPP for this ARP function
*/
if (card->info.guestlan)
return -EOPNOTSUPP;
if (!qeth_is_supported(card,IPA_ARP_PROCESSING)) {
PRINT_WARN("ARP processing not supported "
"on %s!\n", QETH_CARD_IFNAME(card));
return -EOPNOTSUPP;
}
memcpy(buf, entry, 12);
iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
IPA_CMD_ASS_ARP_REMOVE_ENTRY,
12,
QETH_PROT_IPV4);
rc = qeth_send_setassparms(card, iob,
12, (unsigned long)buf,
qeth_default_setassparms_cb, NULL);
if (rc) {
tmp = rc;
memset(buf, 0, 16);
qeth_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
PRINT_WARN("Could not delete ARP entry for address %s on %s: "
"%s (0x%x/%d)\n",
buf, QETH_CARD_IFNAME(card),
qeth_arp_get_error_cause(&rc), tmp, tmp);
}
return rc;
}
static int
qeth_arp_flush_cache(struct qeth_card *card)
{
int rc;
int tmp;
QETH_DBF_TEXT(trace,3,"arpflush");
/*
* currently GuestLAN only supports the ARP assist function
* IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
* thus we say EOPNOTSUPP for this ARP function
*/
if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
return -EOPNOTSUPP;
if (!qeth_is_supported(card,IPA_ARP_PROCESSING)) {
PRINT_WARN("ARP processing not supported "
"on %s!\n", QETH_CARD_IFNAME(card));
return -EOPNOTSUPP;
}
rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
if (rc){
tmp = rc;
PRINT_WARN("Could not flush ARP cache on %s: %s (0x%x/%d)\n",
QETH_CARD_IFNAME(card), qeth_arp_get_error_cause(&rc),
tmp, tmp);
}
return rc;
}
static int
qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
{
struct qeth_card *card = (struct qeth_card *)dev->priv;
struct qeth_arp_cache_entry arp_entry;
struct mii_ioctl_data *mii_data;
int rc = 0;
if (!card)
return -ENODEV;
if ((card->state != CARD_STATE_UP) &&
(card->state != CARD_STATE_SOFTSETUP))
return -ENODEV;
if (card->info.type == QETH_CARD_TYPE_OSN)
return -EPERM;
switch (cmd){
case SIOC_QETH_ARP_SET_NO_ENTRIES:
if ( !capable(CAP_NET_ADMIN) ||
(card->options.layer2) ) {
rc = -EPERM;
break;
}
rc = qeth_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
break;
case SIOC_QETH_ARP_QUERY_INFO:
if ( !capable(CAP_NET_ADMIN) ||
(card->options.layer2) ) {
rc = -EPERM;
break;
}
rc = qeth_arp_query(card, rq->ifr_ifru.ifru_data);
break;
case SIOC_QETH_ARP_ADD_ENTRY:
if ( !capable(CAP_NET_ADMIN) ||
(card->options.layer2) ) {
rc = -EPERM;
break;
}
if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
sizeof(struct qeth_arp_cache_entry)))
rc = -EFAULT;
else
rc = qeth_arp_add_entry(card, &arp_entry);
break;
case SIOC_QETH_ARP_REMOVE_ENTRY:
if ( !capable(CAP_NET_ADMIN) ||
(card->options.layer2) ) {
rc = -EPERM;
break;
}
if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
sizeof(struct qeth_arp_cache_entry)))
rc = -EFAULT;
else
rc = qeth_arp_remove_entry(card, &arp_entry);
break;
case SIOC_QETH_ARP_FLUSH_CACHE:
if ( !capable(CAP_NET_ADMIN) ||
(card->options.layer2) ) {
rc = -EPERM;
break;
}
rc = qeth_arp_flush_cache(card);
break;
case SIOC_QETH_ADP_SET_SNMP_CONTROL:
rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
break;
case SIOC_QETH_GET_CARD_TYPE:
if ((card->info.type == QETH_CARD_TYPE_OSAE) &&
!card->info.guestlan)
return 1;
return 0;
break;
case SIOCGMIIPHY:
mii_data = if_mii(rq);
mii_data->phy_id = 0;
break;
case SIOCGMIIREG:
mii_data = if_mii(rq);
if (mii_data->phy_id != 0)
rc = -EINVAL;
else
mii_data->val_out = qeth_mdio_read(dev,mii_data->phy_id,
mii_data->reg_num);
break;
default:
rc = -EOPNOTSUPP;
}
if (rc)
QETH_DBF_TEXT_(trace, 2, "ioce%d", rc);
return rc;
}
static struct net_device_stats *
qeth_get_stats(struct net_device *dev)
{
struct qeth_card *card;
card = (struct qeth_card *) (dev->priv);
QETH_DBF_TEXT(trace,5,"getstat");
return &card->stats;
}
static int
qeth_change_mtu(struct net_device *dev, int new_mtu)
{
struct qeth_card *card;
char dbf_text[15];
card = (struct qeth_card *) (dev->priv);
QETH_DBF_TEXT(trace,4,"chgmtu");
sprintf(dbf_text, "%8x", new_mtu);
QETH_DBF_TEXT(trace,4,dbf_text);
if (new_mtu < 64)
return -EINVAL;
if (new_mtu > 65535)
return -EINVAL;
if ((!qeth_is_supported(card,IPA_IP_FRAGMENTATION)) &&
(!qeth_mtu_is_valid(card, new_mtu)))
return -EINVAL;
dev->mtu = new_mtu;
return 0;
}
#ifdef CONFIG_QETH_VLAN
static void
qeth_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
{
struct qeth_card *card;
unsigned long flags;
QETH_DBF_TEXT(trace,4,"vlanreg");
card = (struct qeth_card *) dev->priv;
spin_lock_irqsave(&card->vlanlock, flags);
card->vlangrp = grp;
spin_unlock_irqrestore(&card->vlanlock, flags);
}
static inline void
qeth_free_vlan_buffer(struct qeth_card *card, struct qeth_qdio_out_buffer *buf,
unsigned short vid)
{
int i;
struct sk_buff *skb;
struct sk_buff_head tmp_list;
skb_queue_head_init(&tmp_list);
lockdep_set_class(&tmp_list.lock, &qdio_out_skb_queue_key);
for(i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i){
while ((skb = skb_dequeue(&buf->skb_list))){
if (vlan_tx_tag_present(skb) &&
(vlan_tx_tag_get(skb) == vid)) {
atomic_dec(&skb->users);
dev_kfree_skb(skb);
} else
skb_queue_tail(&tmp_list, skb);
}
}
while ((skb = skb_dequeue(&tmp_list)))
skb_queue_tail(&buf->skb_list, skb);
}
static void
qeth_free_vlan_skbs(struct qeth_card *card, unsigned short vid)
{
int i, j;
QETH_DBF_TEXT(trace, 4, "frvlskbs");
for (i = 0; i < card->qdio.no_out_queues; ++i){
for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
qeth_free_vlan_buffer(card, &card->qdio.
out_qs[i]->bufs[j], vid);
}
}
static void
qeth_free_vlan_addresses4(struct qeth_card *card, unsigned short vid)
{
struct in_device *in_dev;
struct in_ifaddr *ifa;
struct qeth_ipaddr *addr;
QETH_DBF_TEXT(trace, 4, "frvaddr4");
rcu_read_lock();
in_dev = __in_dev_get_rcu(card->vlangrp->vlan_devices[vid]);
if (!in_dev)
goto out;
for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
addr = qeth_get_addr_buffer(QETH_PROT_IPV4);
if (addr){
addr->u.a4.addr = ifa->ifa_address;
addr->u.a4.mask = ifa->ifa_mask;
addr->type = QETH_IP_TYPE_NORMAL;
if (!qeth_delete_ip(card, addr))
kfree(addr);
}
}
out:
rcu_read_unlock();
}
static void
qeth_free_vlan_addresses6(struct qeth_card *card, unsigned short vid)
{
#ifdef CONFIG_QETH_IPV6
struct inet6_dev *in6_dev;
struct inet6_ifaddr *ifa;
struct qeth_ipaddr *addr;
QETH_DBF_TEXT(trace, 4, "frvaddr6");
in6_dev = in6_dev_get(card->vlangrp->vlan_devices[vid]);
if (!in6_dev)
return;
for (ifa = in6_dev->addr_list; ifa; ifa = ifa->lst_next){
addr = qeth_get_addr_buffer(QETH_PROT_IPV6);
if (addr){
memcpy(&addr->u.a6.addr, &ifa->addr,
sizeof(struct in6_addr));
addr->u.a6.pfxlen = ifa->prefix_len;
addr->type = QETH_IP_TYPE_NORMAL;
if (!qeth_delete_ip(card, addr))
kfree(addr);
}
}
in6_dev_put(in6_dev);
#endif /* CONFIG_QETH_IPV6 */
}
static void
qeth_free_vlan_addresses(struct qeth_card *card, unsigned short vid)
{
if (card->options.layer2 || !card->vlangrp)
return;
qeth_free_vlan_addresses4(card, vid);
qeth_free_vlan_addresses6(card, vid);
}
static int
qeth_layer2_send_setdelvlan_cb(struct qeth_card *card,
struct qeth_reply *reply,
unsigned long data)
{
struct qeth_ipa_cmd *cmd;
QETH_DBF_TEXT(trace, 2, "L2sdvcb");
cmd = (struct qeth_ipa_cmd *) data;
if (cmd->hdr.return_code) {
PRINT_ERR("Error in processing VLAN %i on %s: 0x%x. "
"Continuing\n",cmd->data.setdelvlan.vlan_id,
QETH_CARD_IFNAME(card), cmd->hdr.return_code);
QETH_DBF_TEXT_(trace, 2, "L2VL%4x", cmd->hdr.command);
QETH_DBF_TEXT_(trace, 2, "L2%s", CARD_BUS_ID(card));
QETH_DBF_TEXT_(trace, 2, "err%d", cmd->hdr.return_code);
}
return 0;
}
static int
qeth_layer2_send_setdelvlan(struct qeth_card *card, __u16 i,
enum qeth_ipa_cmds ipacmd)
{
struct qeth_ipa_cmd *cmd;
struct qeth_cmd_buffer *iob;
QETH_DBF_TEXT_(trace, 4, "L2sdv%x",ipacmd);
iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
cmd->data.setdelvlan.vlan_id = i;
return qeth_send_ipa_cmd(card, iob,
qeth_layer2_send_setdelvlan_cb, NULL);
}
static void
qeth_layer2_process_vlans(struct qeth_card *card, int clear)
{
unsigned short i;
QETH_DBF_TEXT(trace, 3, "L2prcvln");
if (!card->vlangrp)
return;
for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
if (card->vlangrp->vlan_devices[i] == NULL)
continue;
if (clear)
qeth_layer2_send_setdelvlan(card, i, IPA_CMD_DELVLAN);
else
qeth_layer2_send_setdelvlan(card, i, IPA_CMD_SETVLAN);
}
}
/*add_vid is layer 2 used only ....*/
static void
qeth_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
{
struct qeth_card *card;
QETH_DBF_TEXT_(trace, 4, "aid:%d", vid);
card = (struct qeth_card *) dev->priv;
if (!card->options.layer2)
return;
qeth_layer2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
}
/*... kill_vid used for both modes*/
static void
qeth_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
{
struct qeth_card *card;
unsigned long flags;
QETH_DBF_TEXT_(trace, 4, "kid:%d", vid);
card = (struct qeth_card *) dev->priv;
/* free all skbs for the vlan device */
qeth_free_vlan_skbs(card, vid);
spin_lock_irqsave(&card->vlanlock, flags);
/* unregister IP addresses of vlan device */
qeth_free_vlan_addresses(card, vid);
if (card->vlangrp)
card->vlangrp->vlan_devices[vid] = NULL;
spin_unlock_irqrestore(&card->vlanlock, flags);
if (card->options.layer2)
qeth_layer2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
qeth_set_multicast_list(card->dev);
}
#endif
/**
* Examine hardware response to SET_PROMISC_MODE
*/
static int
qeth_setadp_promisc_mode_cb(struct qeth_card *card,
struct qeth_reply *reply,
unsigned long data)
{
struct qeth_ipa_cmd *cmd;
struct qeth_ipacmd_setadpparms *setparms;
QETH_DBF_TEXT(trace,4,"prmadpcb");
cmd = (struct qeth_ipa_cmd *) data;
setparms = &(cmd->data.setadapterparms);
qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
if (cmd->hdr.return_code) {
QETH_DBF_TEXT_(trace,4,"prmrc%2.2x",cmd->hdr.return_code);
setparms->data.mode = SET_PROMISC_MODE_OFF;
}
card->info.promisc_mode = setparms->data.mode;
return 0;
}
/*
* Set promiscuous mode (on or off) (SET_PROMISC_MODE command)
*/
static void
qeth_setadp_promisc_mode(struct qeth_card *card)
{
enum qeth_ipa_promisc_modes mode;
struct net_device *dev = card->dev;
struct qeth_cmd_buffer *iob;
struct qeth_ipa_cmd *cmd;
QETH_DBF_TEXT(trace, 4, "setprom");
if (((dev->flags & IFF_PROMISC) &&
(card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
(!(dev->flags & IFF_PROMISC) &&
(card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
return;
mode = SET_PROMISC_MODE_OFF;
if (dev->flags & IFF_PROMISC)
mode = SET_PROMISC_MODE_ON;
QETH_DBF_TEXT_(trace, 4, "mode:%x", mode);
iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
sizeof(struct qeth_ipacmd_setadpparms));
cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
cmd->data.setadapterparms.data.mode = mode;
qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
}
/**
* set multicast address on card
*/
static void
qeth_set_multicast_list(struct net_device *dev)
{
struct qeth_card *card = (struct qeth_card *) dev->priv;
if (card->info.type == QETH_CARD_TYPE_OSN)
return ;
QETH_DBF_TEXT(trace, 3, "setmulti");
qeth_delete_mc_addresses(card);
if (card->options.layer2) {
qeth_layer2_add_multicast(card);
goto out;
}
qeth_add_multicast_ipv4(card);
#ifdef CONFIG_QETH_IPV6
qeth_add_multicast_ipv6(card);
#endif
out:
qeth_set_ip_addr_list(card);
if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
return;
qeth_setadp_promisc_mode(card);
}
static int
qeth_neigh_setup(struct net_device *dev, struct neigh_parms *np)
{
return 0;
}
static void
qeth_get_mac_for_ipm(__u32 ipm, char *mac, struct net_device *dev)
{
if (dev->type == ARPHRD_IEEE802_TR)
ip_tr_mc_map(ipm, mac);
else
ip_eth_mc_map(ipm, mac);
}
static struct qeth_ipaddr *
qeth_get_addr_buffer(enum qeth_prot_versions prot)
{
struct qeth_ipaddr *addr;
addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
if (addr == NULL) {
PRINT_WARN("Not enough memory to add address\n");
return NULL;
}
addr->type = QETH_IP_TYPE_NORMAL;
addr->proto = prot;
return addr;
}
int
qeth_osn_assist(struct net_device *dev,
void *data,
int data_len)
{
struct qeth_cmd_buffer *iob;
struct qeth_card *card;
int rc;
QETH_DBF_TEXT(trace, 2, "osnsdmc");
if (!dev)
return -ENODEV;
card = (struct qeth_card *)dev->priv;
if (!card)
return -ENODEV;
if ((card->state != CARD_STATE_UP) &&
(card->state != CARD_STATE_SOFTSETUP))
return -ENODEV;
iob = qeth_wait_for_buffer(&card->write);
memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
return rc;
}
static struct net_device *
qeth_netdev_by_devno(unsigned char *read_dev_no)
{
struct qeth_card *card;
struct net_device *ndev;
unsigned char *readno;
__u16 temp_dev_no, card_dev_no;
char *endp;
unsigned long flags;
ndev = NULL;
memcpy(&temp_dev_no, read_dev_no, 2);
read_lock_irqsave(&qeth_card_list.rwlock, flags);
list_for_each_entry(card, &qeth_card_list.list, list) {
readno = CARD_RDEV_ID(card);
readno += (strlen(readno) - 4);
card_dev_no = simple_strtoul(readno, &endp, 16);
if (card_dev_no == temp_dev_no) {
ndev = card->dev;
break;
}
}
read_unlock_irqrestore(&qeth_card_list.rwlock, flags);
return ndev;
}
int
qeth_osn_register(unsigned char *read_dev_no,
struct net_device **dev,
int (*assist_cb)(struct net_device *, void *),
int (*data_cb)(struct sk_buff *))
{
struct qeth_card * card;
QETH_DBF_TEXT(trace, 2, "osnreg");
*dev = qeth_netdev_by_devno(read_dev_no);
if (*dev == NULL)
return -ENODEV;
card = (struct qeth_card *)(*dev)->priv;
if (!card)
return -ENODEV;
if ((assist_cb == NULL) || (data_cb == NULL))
return -EINVAL;
card->osn_info.assist_cb = assist_cb;
card->osn_info.data_cb = data_cb;
return 0;
}
void
qeth_osn_deregister(struct net_device * dev)
{
struct qeth_card *card;
QETH_DBF_TEXT(trace, 2, "osndereg");
if (!dev)
return;
card = (struct qeth_card *)dev->priv;
if (!card)
return;
card->osn_info.assist_cb = NULL;
card->osn_info.data_cb = NULL;
return;
}
static void
qeth_delete_mc_addresses(struct qeth_card *card)
{
struct qeth_ipaddr *iptodo;
unsigned long flags;
QETH_DBF_TEXT(trace,4,"delmc");
iptodo = qeth_get_addr_buffer(QETH_PROT_IPV4);
if (!iptodo) {
QETH_DBF_TEXT(trace, 2, "dmcnomem");
return;
}
iptodo->type = QETH_IP_TYPE_DEL_ALL_MC;
spin_lock_irqsave(&card->ip_lock, flags);
if (!__qeth_insert_ip_todo(card, iptodo, 0))
kfree(iptodo);
spin_unlock_irqrestore(&card->ip_lock, flags);
}
static inline void
qeth_add_mc(struct qeth_card *card, struct in_device *in4_dev)
{
struct qeth_ipaddr *ipm;
struct ip_mc_list *im4;
char buf[MAX_ADDR_LEN];
QETH_DBF_TEXT(trace,4,"addmc");
for (im4 = in4_dev->mc_list; im4; im4 = im4->next) {
qeth_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev);
ipm = qeth_get_addr_buffer(QETH_PROT_IPV4);
if (!ipm)
continue;
ipm->u.a4.addr = im4->multiaddr;
memcpy(ipm->mac,buf,OSA_ADDR_LEN);
ipm->is_multicast = 1;
if (!qeth_add_ip(card,ipm))
kfree(ipm);
}
}
static inline void
qeth_add_vlan_mc(struct qeth_card *card)
{
#ifdef CONFIG_QETH_VLAN
struct in_device *in_dev;
struct vlan_group *vg;
int i;
QETH_DBF_TEXT(trace,4,"addmcvl");
if ( ((card->options.layer2 == 0) &&
(!qeth_is_supported(card,IPA_FULL_VLAN))) ||
(card->vlangrp == NULL) )
return ;
vg = card->vlangrp;
for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
if (vg->vlan_devices[i] == NULL ||
!(vg->vlan_devices[i]->flags & IFF_UP))
continue;
in_dev = in_dev_get(vg->vlan_devices[i]);
if (!in_dev)
continue;
read_lock(&in_dev->mc_list_lock);
qeth_add_mc(card,in_dev);
read_unlock(&in_dev->mc_list_lock);
in_dev_put(in_dev);
}
#endif
}
static void
qeth_add_multicast_ipv4(struct qeth_card *card)
{
struct in_device *in4_dev;
QETH_DBF_TEXT(trace,4,"chkmcv4");
in4_dev = in_dev_get(card->dev);
if (in4_dev == NULL)
return;
read_lock(&in4_dev->mc_list_lock);
qeth_add_mc(card, in4_dev);
qeth_add_vlan_mc(card);
read_unlock(&in4_dev->mc_list_lock);
in_dev_put(in4_dev);
}
static void
qeth_layer2_add_multicast(struct qeth_card *card)
{
struct qeth_ipaddr *ipm;
struct dev_mc_list *dm;
QETH_DBF_TEXT(trace,4,"L2addmc");
for (dm = card->dev->mc_list; dm; dm = dm->next) {
ipm = qeth_get_addr_buffer(QETH_PROT_IPV4);
if (!ipm)
continue;
memcpy(ipm->mac,dm->dmi_addr,MAX_ADDR_LEN);
ipm->is_multicast = 1;
if (!qeth_add_ip(card, ipm))
kfree(ipm);
}
}
#ifdef CONFIG_QETH_IPV6
static inline void
qeth_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev)
{
struct qeth_ipaddr *ipm;
struct ifmcaddr6 *im6;
char buf[MAX_ADDR_LEN];
QETH_DBF_TEXT(trace,4,"addmc6");
for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
ipm = qeth_get_addr_buffer(QETH_PROT_IPV6);
if (!ipm)
continue;
ipm->is_multicast = 1;
memcpy(ipm->mac,buf,OSA_ADDR_LEN);
memcpy(&ipm->u.a6.addr,&im6->mca_addr.s6_addr,
sizeof(struct in6_addr));
if (!qeth_add_ip(card,ipm))
kfree(ipm);
}
}
static inline void
qeth_add_vlan_mc6(struct qeth_card *card)
{
#ifdef CONFIG_QETH_VLAN
struct inet6_dev *in_dev;
struct vlan_group *vg;
int i;
QETH_DBF_TEXT(trace,4,"admc6vl");
if ( ((card->options.layer2 == 0) &&
(!qeth_is_supported(card,IPA_FULL_VLAN))) ||
(card->vlangrp == NULL))
return ;
vg = card->vlangrp;
for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
if (vg->vlan_devices[i] == NULL ||
!(vg->vlan_devices[i]->flags & IFF_UP))
continue;
in_dev = in6_dev_get(vg->vlan_devices[i]);
if (!in_dev)
continue;
read_lock(&in_dev->lock);
qeth_add_mc6(card,in_dev);
read_unlock(&in_dev->lock);
in6_dev_put(in_dev);
}
#endif /* CONFIG_QETH_VLAN */
}
static void
qeth_add_multicast_ipv6(struct qeth_card *card)
{
struct inet6_dev *in6_dev;
QETH_DBF_TEXT(trace,4,"chkmcv6");
if (!qeth_is_supported(card, IPA_IPV6))
return ;
in6_dev = in6_dev_get(card->dev);
if (in6_dev == NULL)
return;
read_lock(&in6_dev->lock);
qeth_add_mc6(card, in6_dev);
qeth_add_vlan_mc6(card);
read_unlock(&in6_dev->lock);
in6_dev_put(in6_dev);
}
#endif /* CONFIG_QETH_IPV6 */
static int
qeth_layer2_send_setdelmac(struct qeth_card *card, __u8 *mac,
enum qeth_ipa_cmds ipacmd,
int (*reply_cb) (struct qeth_card *,
struct qeth_reply*,
unsigned long))
{
struct qeth_ipa_cmd *cmd;
struct qeth_cmd_buffer *iob;
QETH_DBF_TEXT(trace, 2, "L2sdmac");
iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
return qeth_send_ipa_cmd(card, iob, reply_cb, NULL);
}
static int
qeth_layer2_send_setgroupmac_cb(struct qeth_card *card,
struct qeth_reply *reply,
unsigned long data)
{
struct qeth_ipa_cmd *cmd;
__u8 *mac;
QETH_DBF_TEXT(trace, 2, "L2Sgmacb");
cmd = (struct qeth_ipa_cmd *) data;
mac = &cmd->data.setdelmac.mac[0];
/* MAC already registered, needed in couple/uncouple case */
if (cmd->hdr.return_code == 0x2005) {
PRINT_WARN("Group MAC %02x:%02x:%02x:%02x:%02x:%02x " \
"already existing on %s \n",
mac[0], mac[1], mac[2], mac[3], mac[4], mac[5],
QETH_CARD_IFNAME(card));
cmd->hdr.return_code = 0;
}
if (cmd->hdr.return_code)
PRINT_ERR("Could not set group MAC " \
"%02x:%02x:%02x:%02x:%02x:%02x on %s: %x\n",
mac[0], mac[1], mac[2], mac[3], mac[4], mac[5],
QETH_CARD_IFNAME(card),cmd->hdr.return_code);
return 0;
}
static int
qeth_layer2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
{
QETH_DBF_TEXT(trace, 2, "L2Sgmac");
return qeth_layer2_send_setdelmac(card, mac, IPA_CMD_SETGMAC,
qeth_layer2_send_setgroupmac_cb);
}
static int
qeth_layer2_send_delgroupmac_cb(struct qeth_card *card,
struct qeth_reply *reply,
unsigned long data)
{
struct qeth_ipa_cmd *cmd;
__u8 *mac;
QETH_DBF_TEXT(trace, 2, "L2Dgmacb");
cmd = (struct qeth_ipa_cmd *) data;
mac = &cmd->data.setdelmac.mac[0];
if (cmd->hdr.return_code)
PRINT_ERR("Could not delete group MAC " \
"%02x:%02x:%02x:%02x:%02x:%02x on %s: %x\n",
mac[0], mac[1], mac[2], mac[3], mac[4], mac[5],
QETH_CARD_IFNAME(card), cmd->hdr.return_code);
return 0;
}
static int
qeth_layer2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
{
QETH_DBF_TEXT(trace, 2, "L2Dgmac");
return qeth_layer2_send_setdelmac(card, mac, IPA_CMD_DELGMAC,
qeth_layer2_send_delgroupmac_cb);
}
static int
qeth_layer2_send_setmac_cb(struct qeth_card *card,
struct qeth_reply *reply,
unsigned long data)
{
struct qeth_ipa_cmd *cmd;
QETH_DBF_TEXT(trace, 2, "L2Smaccb");
cmd = (struct qeth_ipa_cmd *) data;
if (cmd->hdr.return_code) {
QETH_DBF_TEXT_(trace, 2, "L2er%x", cmd->hdr.return_code);
PRINT_WARN("Error in registering MAC address on " \
"device %s: x%x\n", CARD_BUS_ID(card),
cmd->hdr.return_code);
card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
cmd->hdr.return_code = -EIO;
} else {
card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
memcpy(card->dev->dev_addr,cmd->data.setdelmac.mac,
OSA_ADDR_LEN);
PRINT_INFO("MAC address %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x "
"successfully registered on device %s\n",
card->dev->dev_addr[0], card->dev->dev_addr[1],
card->dev->dev_addr[2], card->dev->dev_addr[3],
card->dev->dev_addr[4], card->dev->dev_addr[5],
card->dev->name);
}
return 0;
}
static int
qeth_layer2_send_setmac(struct qeth_card *card, __u8 *mac)
{
QETH_DBF_TEXT(trace, 2, "L2Setmac");
return qeth_layer2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
qeth_layer2_send_setmac_cb);
}
static int
qeth_layer2_send_delmac_cb(struct qeth_card *card,
struct qeth_reply *reply,
unsigned long data)
{
struct qeth_ipa_cmd *cmd;
QETH_DBF_TEXT(trace, 2, "L2Dmaccb");
cmd = (struct qeth_ipa_cmd *) data;
if (cmd->hdr.return_code) {
PRINT_WARN("Error in deregistering MAC address on " \
"device %s: x%x\n", CARD_BUS_ID(card),
cmd->hdr.return_code);
QETH_DBF_TEXT_(trace, 2, "err%d", cmd->hdr.return_code);
cmd->hdr.return_code = -EIO;
return 0;
}
card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
return 0;
}
static int
qeth_layer2_send_delmac(struct qeth_card *card, __u8 *mac)
{
QETH_DBF_TEXT(trace, 2, "L2Delmac");
if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
return 0;
return qeth_layer2_send_setdelmac(card, mac, IPA_CMD_DELVMAC,
qeth_layer2_send_delmac_cb);
}
static int
qeth_layer2_set_mac_address(struct net_device *dev, void *p)
{
struct sockaddr *addr = p;
struct qeth_card *card;
int rc = 0;
QETH_DBF_TEXT(trace, 3, "setmac");
if (qeth_verify_dev(dev) != QETH_REAL_CARD) {
QETH_DBF_TEXT(trace, 3, "setmcINV");
return -EOPNOTSUPP;
}
card = (struct qeth_card *) dev->priv;
if (!card->options.layer2) {
PRINT_WARN("Setting MAC address on %s is not supported "
"in Layer 3 mode.\n", dev->name);
QETH_DBF_TEXT(trace, 3, "setmcLY3");
return -EOPNOTSUPP;
}
if (card->info.type == QETH_CARD_TYPE_OSN) {
PRINT_WARN("Setting MAC address on %s is not supported.\n",
dev->name);
QETH_DBF_TEXT(trace, 3, "setmcOSN");
return -EOPNOTSUPP;
}
QETH_DBF_TEXT_(trace, 3, "%s", CARD_BUS_ID(card));
QETH_DBF_HEX(trace, 3, addr->sa_data, OSA_ADDR_LEN);
rc = qeth_layer2_send_delmac(card, &card->dev->dev_addr[0]);
if (!rc)
rc = qeth_layer2_send_setmac(card, addr->sa_data);
return rc;
}
static void
qeth_fill_ipacmd_header(struct qeth_card *card, struct qeth_ipa_cmd *cmd,
__u8 command, enum qeth_prot_versions prot)
{
memset(cmd, 0, sizeof (struct qeth_ipa_cmd));
cmd->hdr.command = command;
cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
cmd->hdr.seqno = card->seqno.ipa;
cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
if (card->options.layer2)
cmd->hdr.prim_version_no = 2;
else
cmd->hdr.prim_version_no = 1;
cmd->hdr.param_count = 1;
cmd->hdr.prot_version = prot;
cmd->hdr.ipa_supported = 0;
cmd->hdr.ipa_enabled = 0;
}
static struct qeth_cmd_buffer *
qeth_get_ipacmd_buffer(struct qeth_card *card, enum qeth_ipa_cmds ipacmd,
enum qeth_prot_versions prot)
{
struct qeth_cmd_buffer *iob;
struct qeth_ipa_cmd *cmd;
iob = qeth_wait_for_buffer(&card->write);
cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
return iob;
}
static int
qeth_send_setdelmc(struct qeth_card *card, struct qeth_ipaddr *addr, int ipacmd)
{
int rc;
struct qeth_cmd_buffer *iob;
struct qeth_ipa_cmd *cmd;
QETH_DBF_TEXT(trace,4,"setdelmc");
iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
memcpy(&cmd->data.setdelipm.mac,addr->mac, OSA_ADDR_LEN);
if (addr->proto == QETH_PROT_IPV6)
memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
sizeof(struct in6_addr));
else
memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr,4);
rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
return rc;
}
static inline void
qeth_fill_netmask(u8 *netmask, unsigned int len)
{
int i,j;
for (i=0;i<16;i++) {
j=(len)-(i*8);
if (j >= 8)
netmask[i] = 0xff;
else if (j > 0)
netmask[i] = (u8)(0xFF00>>j);
else
netmask[i] = 0;
}
}
static int
qeth_send_setdelip(struct qeth_card *card, struct qeth_ipaddr *addr,
int ipacmd, unsigned int flags)
{
int rc;
struct qeth_cmd_buffer *iob;
struct qeth_ipa_cmd *cmd;
__u8 netmask[16];
QETH_DBF_TEXT(trace,4,"setdelip");
QETH_DBF_TEXT_(trace,4,"flags%02X", flags);
iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
if (addr->proto == QETH_PROT_IPV6) {
memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
sizeof(struct in6_addr));
qeth_fill_netmask(netmask,addr->u.a6.pfxlen);
memcpy(cmd->data.setdelip6.mask, netmask,
sizeof(struct in6_addr));
cmd->data.setdelip6.flags = flags;
} else {
memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
cmd->data.setdelip4.flags = flags;
}
rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
return rc;
}
static int
qeth_layer2_register_addr_entry(struct qeth_card *card,
struct qeth_ipaddr *addr)
{
if (!addr->is_multicast)
return 0;
QETH_DBF_TEXT(trace, 2, "setgmac");
QETH_DBF_HEX(trace,3,&addr->mac[0],OSA_ADDR_LEN);
return qeth_layer2_send_setgroupmac(card, &addr->mac[0]);
}
static int
qeth_layer2_deregister_addr_entry(struct qeth_card *card,
struct qeth_ipaddr *addr)
{
if (!addr->is_multicast)
return 0;
QETH_DBF_TEXT(trace, 2, "delgmac");
QETH_DBF_HEX(trace,3,&addr->mac[0],OSA_ADDR_LEN);
return qeth_layer2_send_delgroupmac(card, &addr->mac[0]);
}
static int
qeth_layer3_register_addr_entry(struct qeth_card *card,
struct qeth_ipaddr *addr)
{
char buf[50];
int rc;
int cnt = 3;
if (addr->proto == QETH_PROT_IPV4) {
QETH_DBF_TEXT(trace, 2,"setaddr4");
QETH_DBF_HEX(trace, 3, &addr->u.a4.addr, sizeof(int));
} else if (addr->proto == QETH_PROT_IPV6) {
QETH_DBF_TEXT(trace, 2, "setaddr6");
QETH_DBF_HEX(trace,3,&addr->u.a6.addr,8);
QETH_DBF_HEX(trace,3,((char *)&addr->u.a6.addr)+8,8);
} else {
QETH_DBF_TEXT(trace, 2, "setaddr?");
QETH_DBF_HEX(trace, 3, addr, sizeof(struct qeth_ipaddr));
}
do {
if (addr->is_multicast)
rc = qeth_send_setdelmc(card, addr, IPA_CMD_SETIPM);
else
rc = qeth_send_setdelip(card, addr, IPA_CMD_SETIP,
addr->set_flags);
if (rc)
QETH_DBF_TEXT(trace, 2, "failed");
} while ((--cnt > 0) && rc);
if (rc){
QETH_DBF_TEXT(trace, 2, "FAILED");
qeth_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
PRINT_WARN("Could not register IP address %s (rc=0x%x/%d)\n",
buf, rc, rc);
}
return rc;
}
static int
qeth_layer3_deregister_addr_entry(struct qeth_card *card,
struct qeth_ipaddr *addr)
{
//char buf[50];
int rc;
if (addr->proto == QETH_PROT_IPV4) {
QETH_DBF_TEXT(trace, 2,"deladdr4");
QETH_DBF_HEX(trace, 3, &addr->u.a4.addr, sizeof(int));
} else if (addr->proto == QETH_PROT_IPV6) {
QETH_DBF_TEXT(trace, 2, "deladdr6");
QETH_DBF_HEX(trace,3,&addr->u.a6.addr,8);
QETH_DBF_HEX(trace,3,((char *)&addr->u.a6.addr)+8,8);
} else {
QETH_DBF_TEXT(trace, 2, "deladdr?");
QETH_DBF_HEX(trace, 3, addr, sizeof(struct qeth_ipaddr));
}
if (addr->is_multicast)
rc = qeth_send_setdelmc(card, addr, IPA_CMD_DELIPM);
else
rc = qeth_send_setdelip(card, addr, IPA_CMD_DELIP,
addr->del_flags);
if (rc) {
QETH_DBF_TEXT(trace, 2, "failed");
/* TODO: re-activate this warning as soon as we have a
* clean mirco code
qeth_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
PRINT_WARN("Could not deregister IP address %s (rc=%x)\n",
buf, rc);
*/
}
return rc;
}
static int
qeth_register_addr_entry(struct qeth_card *card, struct qeth_ipaddr *addr)
{
if (card->options.layer2)
return qeth_layer2_register_addr_entry(card, addr);
return qeth_layer3_register_addr_entry(card, addr);
}
static int
qeth_deregister_addr_entry(struct qeth_card *card, struct qeth_ipaddr *addr)
{
if (card->options.layer2)
return qeth_layer2_deregister_addr_entry(card, addr);
return qeth_layer3_deregister_addr_entry(card, addr);
}
static u32
qeth_ethtool_get_tx_csum(struct net_device *dev)
{
/* We may need to say that we support tx csum offload if
* we do EDDP or TSO. There are discussions going on to
* enforce rules in the stack and in ethtool that make
* SG and TSO depend on HW_CSUM. At the moment there are
* no such rules....
* If we say yes here, we have to checksum outbound packets
* any time. */
return 0;
}
static int
qeth_ethtool_set_tx_csum(struct net_device *dev, u32 data)
{
return -EINVAL;
}
static u32
qeth_ethtool_get_rx_csum(struct net_device *dev)
{
struct qeth_card *card = (struct qeth_card *)dev->priv;
return (card->options.checksum_type == HW_CHECKSUMMING);
}
static int
qeth_ethtool_set_rx_csum(struct net_device *dev, u32 data)
{
struct qeth_card *card = (struct qeth_card *)dev->priv;
if ((card->state != CARD_STATE_DOWN) &&
(card->state != CARD_STATE_RECOVER))
return -EPERM;
if (data)
card->options.checksum_type = HW_CHECKSUMMING;
else
card->options.checksum_type = SW_CHECKSUMMING;
return 0;
}
static u32
qeth_ethtool_get_sg(struct net_device *dev)
{
struct qeth_card *card = (struct qeth_card *)dev->priv;
return ((card->options.large_send != QETH_LARGE_SEND_NO) &&
(dev->features & NETIF_F_SG));
}
static int
qeth_ethtool_set_sg(struct net_device *dev, u32 data)
{
struct qeth_card *card = (struct qeth_card *)dev->priv;
if (data) {
if (card->options.large_send != QETH_LARGE_SEND_NO)
dev->features |= NETIF_F_SG;
else {
dev->features &= ~NETIF_F_SG;
return -EINVAL;
}
} else
dev->features &= ~NETIF_F_SG;
return 0;
}
static u32
qeth_ethtool_get_tso(struct net_device *dev)
{
struct qeth_card *card = (struct qeth_card *)dev->priv;
return ((card->options.large_send != QETH_LARGE_SEND_NO) &&
(dev->features & NETIF_F_TSO));
}
static int
qeth_ethtool_set_tso(struct net_device *dev, u32 data)
{
struct qeth_card *card = (struct qeth_card *)dev->priv;
if (data) {
if (card->options.large_send != QETH_LARGE_SEND_NO)
dev->features |= NETIF_F_TSO;
else {
dev->features &= ~NETIF_F_TSO;
return -EINVAL;
}
} else
dev->features &= ~NETIF_F_TSO;
return 0;
}
static struct ethtool_ops qeth_ethtool_ops = {
.get_tx_csum = qeth_ethtool_get_tx_csum,
.set_tx_csum = qeth_ethtool_set_tx_csum,
.get_rx_csum = qeth_ethtool_get_rx_csum,
.set_rx_csum = qeth_ethtool_set_rx_csum,
.get_sg = qeth_ethtool_get_sg,
.set_sg = qeth_ethtool_set_sg,
.get_tso = qeth_ethtool_get_tso,
.set_tso = qeth_ethtool_set_tso,
};
static int
qeth_hard_header_parse(struct sk_buff *skb, unsigned char *haddr)
{
struct qeth_card *card;
struct ethhdr *eth;
card = qeth_get_card_from_dev(skb->dev);
if (card->options.layer2)
goto haveheader;
#ifdef CONFIG_QETH_IPV6
/* cause of the manipulated arp constructor and the ARP
flag for OSAE devices we have some nasty exceptions */
if (card->info.type == QETH_CARD_TYPE_OSAE) {
if (!card->options.fake_ll) {
if ((skb->pkt_type==PACKET_OUTGOING) &&
(skb->protocol==ETH_P_IPV6))
goto haveheader;
else
return 0;
} else {
if ((skb->pkt_type==PACKET_OUTGOING) &&
(skb->protocol==ETH_P_IP))
return 0;
else
goto haveheader;
}
}
#endif
if (!card->options.fake_ll)
return 0;
haveheader:
eth = eth_hdr(skb);
memcpy(haddr, eth->h_source, ETH_ALEN);
return ETH_ALEN;
}
static int
qeth_netdev_init(struct net_device *dev)
{
struct qeth_card *card;
card = (struct qeth_card *) dev->priv;
QETH_DBF_TEXT(trace,3,"initdev");
dev->tx_timeout = &qeth_tx_timeout;
dev->watchdog_timeo = QETH_TX_TIMEOUT;
dev->open = qeth_open;
dev->stop = qeth_stop;
dev->hard_start_xmit = qeth_hard_start_xmit;
dev->do_ioctl = qeth_do_ioctl;
dev->get_stats = qeth_get_stats;
dev->change_mtu = qeth_change_mtu;
dev->neigh_setup = qeth_neigh_setup;
dev->set_multicast_list = qeth_set_multicast_list;
#ifdef CONFIG_QETH_VLAN
dev->vlan_rx_register = qeth_vlan_rx_register;
dev->vlan_rx_kill_vid = qeth_vlan_rx_kill_vid;
dev->vlan_rx_add_vid = qeth_vlan_rx_add_vid;
#endif
if (qeth_get_netdev_flags(card) & IFF_NOARP) {
dev->rebuild_header = NULL;
dev->hard_header = NULL;
dev->header_cache_update = NULL;
dev->hard_header_cache = NULL;
}
#ifdef CONFIG_QETH_IPV6
/*IPv6 address autoconfiguration stuff*/
if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
card->dev->dev_id = card->info.unique_id & 0xffff;
#endif
if (card->options.fake_ll &&
(qeth_get_netdev_flags(card) & IFF_NOARP))
dev->hard_header = qeth_fake_header;
if (dev->type == ARPHRD_IEEE802_TR)
dev->hard_header_parse = NULL;
else
dev->hard_header_parse = qeth_hard_header_parse;
dev->set_mac_address = qeth_layer2_set_mac_address;
dev->flags |= qeth_get_netdev_flags(card);
if ((card->options.fake_broadcast) ||
(card->info.broadcast_capable))
dev->flags |= IFF_BROADCAST;
dev->hard_header_len =
qeth_get_hlen(card->info.link_type) + card->options.add_hhlen;
dev->addr_len = OSA_ADDR_LEN;
dev->mtu = card->info.initial_mtu;
if (card->info.type != QETH_CARD_TYPE_OSN)
SET_ETHTOOL_OPS(dev, &qeth_ethtool_ops);
SET_MODULE_OWNER(dev);
return 0;
}
static void
qeth_init_func_level(struct qeth_card *card)
{
if (card->ipato.enabled) {
if (card->info.type == QETH_CARD_TYPE_IQD)
card->info.func_level =
QETH_IDX_FUNC_LEVEL_IQD_ENA_IPAT;
else
card->info.func_level =
QETH_IDX_FUNC_LEVEL_OSAE_ENA_IPAT;
} else {
if (card->info.type == QETH_CARD_TYPE_IQD)
/*FIXME:why do we have same values for dis and ena for osae??? */
card->info.func_level =
QETH_IDX_FUNC_LEVEL_IQD_DIS_IPAT;
else
card->info.func_level =
QETH_IDX_FUNC_LEVEL_OSAE_DIS_IPAT;
}
}
/**
* hardsetup card, initialize MPC and QDIO stuff
*/
static int
qeth_hardsetup_card(struct qeth_card *card)
{
int retries = 3;
int rc;
QETH_DBF_TEXT(setup, 2, "hrdsetup");
retry:
if (retries < 3){
PRINT_WARN("Retrying to do IDX activates.\n");
ccw_device_set_offline(CARD_DDEV(card));
ccw_device_set_offline(CARD_WDEV(card));
ccw_device_set_offline(CARD_RDEV(card));
ccw_device_set_online(CARD_RDEV(card));
ccw_device_set_online(CARD_WDEV(card));
ccw_device_set_online(CARD_DDEV(card));
}
rc = qeth_qdio_clear_card(card,card->info.type!=QETH_CARD_TYPE_IQD);
if (rc == -ERESTARTSYS) {
QETH_DBF_TEXT(setup, 2, "break1");
return rc;
} else if (rc) {
QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
if (--retries < 0)
goto out;
else
goto retry;
}
if ((rc = qeth_get_unitaddr(card))){
QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
return rc;
}
qeth_init_tokens(card);
qeth_init_func_level(card);
rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
if (rc == -ERESTARTSYS) {
QETH_DBF_TEXT(setup, 2, "break2");
return rc;
} else if (rc) {
QETH_DBF_TEXT_(setup, 2, "3err%d", rc);
if (--retries < 0)
goto out;
else
goto retry;
}
rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
if (rc == -ERESTARTSYS) {
QETH_DBF_TEXT(setup, 2, "break3");
return rc;
} else if (rc) {
QETH_DBF_TEXT_(setup, 2, "4err%d", rc);
if (--retries < 0)
goto out;
else
goto retry;
}
if ((rc = qeth_mpc_initialize(card))){
QETH_DBF_TEXT_(setup, 2, "5err%d", rc);
goto out;
}
/*network device will be recovered*/
if (card->dev) {
card->dev->hard_header = card->orig_hard_header;
if (card->options.fake_ll &&
(qeth_get_netdev_flags(card) & IFF_NOARP))
card->dev->hard_header = qeth_fake_header;
return 0;
}
/* at first set_online allocate netdev */
card->dev = qeth_get_netdevice(card->info.type,
card->info.link_type);
if (!card->dev){
qeth_qdio_clear_card(card, card->info.type !=
QETH_CARD_TYPE_IQD);
rc = -ENODEV;
QETH_DBF_TEXT_(setup, 2, "6err%d", rc);
goto out;
}
card->dev->priv = card;
card->orig_hard_header = card->dev->hard_header;
card->dev->type = qeth_get_arphdr_type(card->info.type,
card->info.link_type);
card->dev->init = qeth_netdev_init;
return 0;
out:
PRINT_ERR("Initialization in hardsetup failed! rc=%d\n", rc);
return rc;
}
static int
qeth_default_setassparms_cb(struct qeth_card *card, struct qeth_reply *reply,
unsigned long data)
{
struct qeth_ipa_cmd *cmd;
QETH_DBF_TEXT(trace,4,"defadpcb");
cmd = (struct qeth_ipa_cmd *) data;
if (cmd->hdr.return_code == 0){
cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
if (cmd->hdr.prot_version == QETH_PROT_IPV4)
card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
#ifdef CONFIG_QETH_IPV6
if (cmd->hdr.prot_version == QETH_PROT_IPV6)
card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
#endif
}
if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
QETH_DBF_TEXT_(trace, 3, "csum:%d", card->info.csum_mask);
}
return 0;
}
static int
qeth_default_setadapterparms_cb(struct qeth_card *card,
struct qeth_reply *reply,
unsigned long data)
{
struct qeth_ipa_cmd *cmd;
QETH_DBF_TEXT(trace,4,"defadpcb");
cmd = (struct qeth_ipa_cmd *) data;
if (cmd->hdr.return_code == 0)
cmd->hdr.return_code = cmd->data.setadapterparms.hdr.return_code;
return 0;
}
static int
qeth_query_setadapterparms_cb(struct qeth_card *card, struct qeth_reply *reply,
unsigned long data)
{
struct qeth_ipa_cmd *cmd;
QETH_DBF_TEXT(trace,3,"quyadpcb");
cmd = (struct qeth_ipa_cmd *) data;
if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f)
card->info.link_type =
cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
card->options.adp.supported_funcs =
cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
}
static int
qeth_query_setadapterparms(struct qeth_card *card)
{
int rc;
struct qeth_cmd_buffer *iob;
QETH_DBF_TEXT(trace,3,"queryadp");
iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
sizeof(struct qeth_ipacmd_setadpparms));
rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
return rc;
}
static int
qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
struct qeth_reply *reply,
unsigned long data)
{
struct qeth_ipa_cmd *cmd;
QETH_DBF_TEXT(trace,4,"chgmaccb");
cmd = (struct qeth_ipa_cmd *) data;
if (!card->options.layer2 || card->info.guestlan ||
!(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
memcpy(card->dev->dev_addr,
&cmd->data.setadapterparms.data.change_addr.addr,
OSA_ADDR_LEN);
card->info.mac_bits |= QETH_LAYER2_MAC_READ;
}
qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
return 0;
}
static int
qeth_setadpparms_change_macaddr(struct qeth_card *card)
{
int rc;
struct qeth_cmd_buffer *iob;
struct qeth_ipa_cmd *cmd;
QETH_DBF_TEXT(trace,4,"chgmac");
iob = qeth_get_adapter_cmd(card,IPA_SETADP_ALTER_MAC_ADDRESS,
sizeof(struct qeth_ipacmd_setadpparms));
cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
card->dev->dev_addr, OSA_ADDR_LEN);
rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
NULL);
return rc;
}
static int
qeth_send_setadp_mode(struct qeth_card *card, __u32 command, __u32 mode)
{
int rc;
struct qeth_cmd_buffer *iob;
struct qeth_ipa_cmd *cmd;
QETH_DBF_TEXT(trace,4,"adpmode");
iob = qeth_get_adapter_cmd(card, command,
sizeof(struct qeth_ipacmd_setadpparms));
cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
cmd->data.setadapterparms.data.mode = mode;
rc = qeth_send_ipa_cmd(card, iob, qeth_default_setadapterparms_cb,
NULL);
return rc;
}
static inline int
qeth_setadapter_hstr(struct qeth_card *card)
{
int rc;
QETH_DBF_TEXT(trace,4,"adphstr");
if (qeth_adp_supported(card,IPA_SETADP_SET_BROADCAST_MODE)) {
rc = qeth_send_setadp_mode(card, IPA_SETADP_SET_BROADCAST_MODE,
card->options.broadcast_mode);
if (rc)
PRINT_WARN("couldn't set broadcast mode on "
"device %s: x%x\n",
CARD_BUS_ID(card), rc);
rc = qeth_send_setadp_mode(card, IPA_SETADP_ALTER_MAC_ADDRESS,
card->options.macaddr_mode);
if (rc)
PRINT_WARN("couldn't set macaddr mode on "
"device %s: x%x\n", CARD_BUS_ID(card), rc);
return rc;
}
if (card->options.broadcast_mode == QETH_TR_BROADCAST_LOCAL)
PRINT_WARN("set adapter parameters not available "
"to set broadcast mode, using ALLRINGS "
"on device %s:\n", CARD_BUS_ID(card));
if (card->options.macaddr_mode == QETH_TR_MACADDR_CANONICAL)
PRINT_WARN("set adapter parameters not available "
"to set macaddr mode, using NONCANONICAL "
"on device %s:\n", CARD_BUS_ID(card));
return 0;
}
static int
qeth_setadapter_parms(struct qeth_card *card)
{
int rc;
QETH_DBF_TEXT(setup, 2, "setadprm");
if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)){
PRINT_WARN("set adapter parameters not supported "
"on device %s.\n",
CARD_BUS_ID(card));
QETH_DBF_TEXT(setup, 2, " notsupp");
return 0;
}
rc = qeth_query_setadapterparms(card);
if (rc) {
PRINT_WARN("couldn't set adapter parameters on device %s: "
"x%x\n", CARD_BUS_ID(card), rc);
return rc;
}
if (qeth_adp_supported(card,IPA_SETADP_ALTER_MAC_ADDRESS)) {
rc = qeth_setadpparms_change_macaddr(card);
if (rc)
PRINT_WARN("couldn't get MAC address on "
"device %s: x%x\n",
CARD_BUS_ID(card), rc);
}
if ((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
(card->info.link_type == QETH_LINK_TYPE_LANE_TR))
rc = qeth_setadapter_hstr(card);
return rc;
}
static int
qeth_layer2_initialize(struct qeth_card *card)
{
int rc = 0;
QETH_DBF_TEXT(setup, 2, "doL2init");
QETH_DBF_TEXT_(setup, 2, "doL2%s", CARD_BUS_ID(card));
rc = qeth_query_setadapterparms(card);
if (rc) {
PRINT_WARN("could not query adapter parameters on device %s: "
"x%x\n", CARD_BUS_ID(card), rc);
}
rc = qeth_setadpparms_change_macaddr(card);
if (rc) {
PRINT_WARN("couldn't get MAC address on "
"device %s: x%x\n",
CARD_BUS_ID(card), rc);
QETH_DBF_TEXT_(setup, 2,"1err%d",rc);
return rc;
}
QETH_DBF_HEX(setup,2, card->dev->dev_addr, OSA_ADDR_LEN);
rc = qeth_layer2_send_setmac(card, &card->dev->dev_addr[0]);
if (rc)
QETH_DBF_TEXT_(setup, 2,"2err%d",rc);
return 0;
}
static int
qeth_send_startstoplan(struct qeth_card *card, enum qeth_ipa_cmds ipacmd,
enum qeth_prot_versions prot)
{
int rc;
struct qeth_cmd_buffer *iob;
iob = qeth_get_ipacmd_buffer(card,ipacmd,prot);
rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
return rc;
}
static int
qeth_send_startlan(struct qeth_card *card, enum qeth_prot_versions prot)
{
int rc;
QETH_DBF_TEXT_(setup, 2, "strtlan%i", prot);
rc = qeth_send_startstoplan(card, IPA_CMD_STARTLAN, prot);
return rc;
}
static int
qeth_send_stoplan(struct qeth_card *card)
{
int rc = 0;
/*
* TODO: according to the IPA format document page 14,
* TCP/IP (we!) never issue a STOPLAN
* is this right ?!?
*/
QETH_DBF_TEXT(trace, 2, "stoplan");
rc = qeth_send_startstoplan(card, IPA_CMD_STOPLAN, QETH_PROT_IPV4);
return rc;
}
static int
qeth_query_ipassists_cb(struct qeth_card *card, struct qeth_reply *reply,
unsigned long data)
{
struct qeth_ipa_cmd *cmd;
QETH_DBF_TEXT(setup, 2, "qipasscb");
cmd = (struct qeth_ipa_cmd *) data;
if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
/* Disable IPV6 support hard coded for Hipersockets */
if(card->info.type == QETH_CARD_TYPE_IQD)
card->options.ipa4.supported_funcs &= ~IPA_IPV6;
} else {
#ifdef CONFIG_QETH_IPV6
card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
#endif
}
QETH_DBF_TEXT(setup, 2, "suppenbl");
QETH_DBF_TEXT_(setup, 2, "%x",cmd->hdr.ipa_supported);
QETH_DBF_TEXT_(setup, 2, "%x",cmd->hdr.ipa_enabled);
return 0;
}
static int
qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
{
int rc;
struct qeth_cmd_buffer *iob;
QETH_DBF_TEXT_(setup, 2, "qipassi%i", prot);
if (card->options.layer2) {
QETH_DBF_TEXT(setup, 2, "noprmly2");
return -EPERM;
}
iob = qeth_get_ipacmd_buffer(card,IPA_CMD_QIPASSIST,prot);
rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
return rc;
}
static struct qeth_cmd_buffer *
qeth_get_setassparms_cmd(struct qeth_card *card, enum qeth_ipa_funcs ipa_func,
__u16 cmd_code, __u16 len,
enum qeth_prot_versions prot)
{
struct qeth_cmd_buffer *iob;
struct qeth_ipa_cmd *cmd;
QETH_DBF_TEXT(trace,4,"getasscm");
iob = qeth_get_ipacmd_buffer(card,IPA_CMD_SETASSPARMS,prot);
cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
cmd->data.setassparms.hdr.assist_no = ipa_func;
cmd->data.setassparms.hdr.length = 8 + len;
cmd->data.setassparms.hdr.command_code = cmd_code;
cmd->data.setassparms.hdr.return_code = 0;
cmd->data.setassparms.hdr.seq_no = 0;
return iob;
}
static int
qeth_send_setassparms(struct qeth_card *card, struct qeth_cmd_buffer *iob,
__u16 len, long data,
int (*reply_cb)
(struct qeth_card *,struct qeth_reply *,unsigned long),
void *reply_param)
{
int rc;
struct qeth_ipa_cmd *cmd;
QETH_DBF_TEXT(trace,4,"sendassp");
cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
if (len <= sizeof(__u32))
cmd->data.setassparms.data.flags_32bit = (__u32) data;
else /* (len > sizeof(__u32)) */
memcpy(&cmd->data.setassparms.data, (void *) data, len);
rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
return rc;
}
#ifdef CONFIG_QETH_IPV6
static int
qeth_send_simple_setassparms_ipv6(struct qeth_card *card,
enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
{
int rc;
struct qeth_cmd_buffer *iob;
QETH_DBF_TEXT(trace,4,"simassp6");
iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
0, QETH_PROT_IPV6);
rc = qeth_send_setassparms(card, iob, 0, 0,
qeth_default_setassparms_cb, NULL);
return rc;
}
#endif
static int
qeth_send_simple_setassparms(struct qeth_card *card,
enum qeth_ipa_funcs ipa_func,
__u16 cmd_code, long data)
{
int rc;
int length = 0;
struct qeth_cmd_buffer *iob;
QETH_DBF_TEXT(trace,4,"simassp4");
if (data)
length = sizeof(__u32);
iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
length, QETH_PROT_IPV4);
rc = qeth_send_setassparms(card, iob, length, data,
qeth_default_setassparms_cb, NULL);
return rc;
}
static inline int
qeth_start_ipa_arp_processing(struct qeth_card *card)
{
int rc;
QETH_DBF_TEXT(trace,3,"ipaarp");
if (!qeth_is_supported(card,IPA_ARP_PROCESSING)) {
PRINT_WARN("ARP processing not supported "
"on %s!\n", QETH_CARD_IFNAME(card));
return 0;
}
rc = qeth_send_simple_setassparms(card,IPA_ARP_PROCESSING,
IPA_CMD_ASS_START, 0);
if (rc) {
PRINT_WARN("Could not start ARP processing "
"assist on %s: 0x%x\n",
QETH_CARD_IFNAME(card), rc);
}
return rc;
}
static int
qeth_start_ipa_ip_fragmentation(struct qeth_card *card)
{
int rc;
QETH_DBF_TEXT(trace,3,"ipaipfrg");
if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
PRINT_INFO("Hardware IP fragmentation not supported on %s\n",
QETH_CARD_IFNAME(card));
return -EOPNOTSUPP;
}
rc = qeth_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
IPA_CMD_ASS_START, 0);
if (rc) {
PRINT_WARN("Could not start Hardware IP fragmentation "
"assist on %s: 0x%x\n",
QETH_CARD_IFNAME(card), rc);
} else
PRINT_INFO("Hardware IP fragmentation enabled \n");
return rc;
}
static int
qeth_start_ipa_source_mac(struct qeth_card *card)
{
int rc;
QETH_DBF_TEXT(trace,3,"stsrcmac");
if (!card->options.fake_ll)
return -EOPNOTSUPP;
if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
PRINT_INFO("Inbound source address not "
"supported on %s\n", QETH_CARD_IFNAME(card));
return -EOPNOTSUPP;
}
rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC,
IPA_CMD_ASS_START, 0);
if (rc)
PRINT_WARN("Could not start inbound source "
"assist on %s: 0x%x\n",
QETH_CARD_IFNAME(card), rc);
return rc;
}
static int
qeth_start_ipa_vlan(struct qeth_card *card)
{
int rc = 0;
QETH_DBF_TEXT(trace,3,"strtvlan");
#ifdef CONFIG_QETH_VLAN
if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
PRINT_WARN("VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
return -EOPNOTSUPP;
}
rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO,
IPA_CMD_ASS_START,0);
if (rc) {
PRINT_WARN("Could not start vlan "
"assist on %s: 0x%x\n",
QETH_CARD_IFNAME(card), rc);
} else {
PRINT_INFO("VLAN enabled \n");
card->dev->features |=
NETIF_F_HW_VLAN_FILTER |
NETIF_F_HW_VLAN_TX |
NETIF_F_HW_VLAN_RX;
}
#endif /* QETH_VLAN */
return rc;
}
static int
qeth_start_ipa_multicast(struct qeth_card *card)
{
int rc;
QETH_DBF_TEXT(trace,3,"stmcast");
if (!qeth_is_supported(card, IPA_MULTICASTING)) {
PRINT_WARN("Multicast not supported on %s\n",
QETH_CARD_IFNAME(card));
return -EOPNOTSUPP;
}
rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING,
IPA_CMD_ASS_START,0);
if (rc) {
PRINT_WARN("Could not start multicast "
"assist on %s: rc=%i\n",
QETH_CARD_IFNAME(card), rc);
} else {
PRINT_INFO("Multicast enabled\n");
card->dev->flags |= IFF_MULTICAST;
}
return rc;
}
#ifdef CONFIG_QETH_IPV6
static int
qeth_softsetup_ipv6(struct qeth_card *card)
{
int rc;
QETH_DBF_TEXT(trace,3,"softipv6");
rc = qeth_send_startlan(card, QETH_PROT_IPV6);
if (rc) {
PRINT_ERR("IPv6 startlan failed on %s\n",
QETH_CARD_IFNAME(card));
return rc;
}
rc = qeth_query_ipassists(card,QETH_PROT_IPV6);
if (rc) {
PRINT_ERR("IPv6 query ipassist failed on %s\n",
QETH_CARD_IFNAME(card));
return rc;
}
rc = qeth_send_simple_setassparms(card, IPA_IPV6,
IPA_CMD_ASS_START, 3);
if (rc) {
PRINT_WARN("IPv6 start assist (version 4) failed "
"on %s: 0x%x\n",
QETH_CARD_IFNAME(card), rc);
return rc;
}
rc = qeth_send_simple_setassparms_ipv6(card, IPA_IPV6,
IPA_CMD_ASS_START);
if (rc) {
PRINT_WARN("IPV6 start assist (version 6) failed "
"on %s: 0x%x\n",
QETH_CARD_IFNAME(card), rc);
return rc;
}
rc = qeth_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
IPA_CMD_ASS_START);
if (rc) {
PRINT_WARN("Could not enable passthrough "
"on %s: 0x%x\n",
QETH_CARD_IFNAME(card), rc);
return rc;
}
PRINT_INFO("IPV6 enabled \n");
return 0;
}
#endif
static int
qeth_start_ipa_ipv6(struct qeth_card *card)
{
int rc = 0;
#ifdef CONFIG_QETH_IPV6
QETH_DBF_TEXT(trace,3,"strtipv6");
if (!qeth_is_supported(card, IPA_IPV6)) {
PRINT_WARN("IPv6 not supported on %s\n",
QETH_CARD_IFNAME(card));
return 0;
}
rc = qeth_softsetup_ipv6(card);
#endif
return rc ;
}
static int
qeth_start_ipa_broadcast(struct qeth_card *card)
{
int rc;
QETH_DBF_TEXT(trace,3,"stbrdcst");
card->info.broadcast_capable = 0;
if (!qeth_is_supported(card, IPA_FILTERING)) {
PRINT_WARN("Broadcast not supported on %s\n",
QETH_CARD_IFNAME(card));
rc = -EOPNOTSUPP;
goto out;
}
rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
IPA_CMD_ASS_START, 0);
if (rc) {
PRINT_WARN("Could not enable broadcasting filtering "
"on %s: 0x%x\n",
QETH_CARD_IFNAME(card), rc);
goto out;
}
rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
IPA_CMD_ASS_CONFIGURE, 1);
if (rc) {
PRINT_WARN("Could not set up broadcast filtering on %s: 0x%x\n",
QETH_CARD_IFNAME(card), rc);
goto out;
}
card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
PRINT_INFO("Broadcast enabled \n");
rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
IPA_CMD_ASS_ENABLE, 1);
if (rc) {
PRINT_WARN("Could not set up broadcast echo filtering on "
"%s: 0x%x\n", QETH_CARD_IFNAME(card), rc);
goto out;
}
card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
out:
if (card->info.broadcast_capable)
card->dev->flags |= IFF_BROADCAST;
else
card->dev->flags &= ~IFF_BROADCAST;
return rc;
}
static int
qeth_send_checksum_command(struct qeth_card *card)
{
int rc;
rc = qeth_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
IPA_CMD_ASS_START, 0);
if (rc) {
PRINT_WARN("Starting Inbound HW Checksumming failed on %s: "
"0x%x,\ncontinuing using Inbound SW Checksumming\n",
QETH_CARD_IFNAME(card), rc);
return rc;
}
rc = qeth_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
IPA_CMD_ASS_ENABLE,
card->info.csum_mask);
if (rc) {
PRINT_WARN("Enabling Inbound HW Checksumming failed on %s: "
"0x%x,\ncontinuing using Inbound SW Checksumming\n",
QETH_CARD_IFNAME(card), rc);
return rc;
}
return 0;
}
static int
qeth_start_ipa_checksum(struct qeth_card *card)
{
int rc = 0;
QETH_DBF_TEXT(trace,3,"strtcsum");
if (card->options.checksum_type == NO_CHECKSUMMING) {
PRINT_WARN("Using no checksumming on %s.\n",
QETH_CARD_IFNAME(card));
return 0;
}
if (card->options.checksum_type == SW_CHECKSUMMING) {
PRINT_WARN("Using SW checksumming on %s.\n",
QETH_CARD_IFNAME(card));
return 0;
}
if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) {
PRINT_WARN("Inbound HW Checksumming not "
"supported on %s,\ncontinuing "
"using Inbound SW Checksumming\n",
QETH_CARD_IFNAME(card));
card->options.checksum_type = SW_CHECKSUMMING;
return 0;
}
rc = qeth_send_checksum_command(card);
if (!rc) {
PRINT_INFO("HW Checksumming (inbound) enabled \n");
}
return rc;
}
static int
qeth_start_ipa_tso(struct qeth_card *card)
{
int rc;
QETH_DBF_TEXT(trace,3,"sttso");
if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
PRINT_WARN("Outbound TSO not supported on %s\n",
QETH_CARD_IFNAME(card));
rc = -EOPNOTSUPP;
} else {
rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
IPA_CMD_ASS_START,0);
if (rc)
PRINT_WARN("Could not start outbound TSO "
"assist on %s: rc=%i\n",
QETH_CARD_IFNAME(card), rc);
else
PRINT_INFO("Outbound TSO enabled\n");
}
if (rc && (card->options.large_send == QETH_LARGE_SEND_TSO)){
card->options.large_send = QETH_LARGE_SEND_NO;
card->dev->features &= ~ (NETIF_F_TSO | NETIF_F_SG);
}
return rc;
}
static int
qeth_start_ipassists(struct qeth_card *card)
{
QETH_DBF_TEXT(trace,3,"strtipas");
qeth_start_ipa_arp_processing(card); /* go on*/
qeth_start_ipa_ip_fragmentation(card); /* go on*/
qeth_start_ipa_source_mac(card); /* go on*/
qeth_start_ipa_vlan(card); /* go on*/
qeth_start_ipa_multicast(card); /* go on*/
qeth_start_ipa_ipv6(card); /* go on*/
qeth_start_ipa_broadcast(card); /* go on*/
qeth_start_ipa_checksum(card); /* go on*/
qeth_start_ipa_tso(card); /* go on*/
return 0;
}
static int
qeth_send_setrouting(struct qeth_card *card, enum qeth_routing_types type,
enum qeth_prot_versions prot)
{
int rc;
struct qeth_ipa_cmd *cmd;
struct qeth_cmd_buffer *iob;
QETH_DBF_TEXT(trace,4,"setroutg");
iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
cmd->data.setrtg.type = (type);
rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
return rc;
}
static void
qeth_correct_routing_type(struct qeth_card *card, enum qeth_routing_types *type,
enum qeth_prot_versions prot)
{
if (card->info.type == QETH_CARD_TYPE_IQD) {
switch (*type) {
case NO_ROUTER:
case PRIMARY_CONNECTOR:
case SECONDARY_CONNECTOR:
case MULTICAST_ROUTER:
return;
default:
goto out_inval;
}
} else {
switch (*type) {
case NO_ROUTER:
case PRIMARY_ROUTER:
case SECONDARY_ROUTER:
return;
case MULTICAST_ROUTER:
if (qeth_is_ipafunc_supported(card, prot,
IPA_OSA_MC_ROUTER))
return;
default:
goto out_inval;
}
}
out_inval:
PRINT_WARN("Routing type '%s' not supported for interface %s.\n"
"Router status set to 'no router'.\n",
((*type == PRIMARY_ROUTER)? "primary router" :
(*type == SECONDARY_ROUTER)? "secondary router" :
(*type == PRIMARY_CONNECTOR)? "primary connector" :
(*type == SECONDARY_CONNECTOR)? "secondary connector" :
(*type == MULTICAST_ROUTER)? "multicast router" :
"unknown"),
card->dev->name);
*type = NO_ROUTER;
}
int
qeth_setrouting_v4(struct qeth_card *card)
{
int rc;
QETH_DBF_TEXT(trace,3,"setrtg4");
qeth_correct_routing_type(card, &card->options.route4.type,
QETH_PROT_IPV4);
rc = qeth_send_setrouting(card, card->options.route4.type,
QETH_PROT_IPV4);
if (rc) {
card->options.route4.type = NO_ROUTER;
PRINT_WARN("Error (0x%04x) while setting routing type on %s. "
"Type set to 'no router'.\n",
rc, QETH_CARD_IFNAME(card));
}
return rc;
}
int
qeth_setrouting_v6(struct qeth_card *card)
{
int rc = 0;
QETH_DBF_TEXT(trace,3,"setrtg6");
#ifdef CONFIG_QETH_IPV6
if (!qeth_is_supported(card, IPA_IPV6))
return 0;
qeth_correct_routing_type(card, &card->options.route6.type,
QETH_PROT_IPV6);
rc = qeth_send_setrouting(card, card->options.route6.type,
QETH_PROT_IPV6);
if (rc) {
card->options.route6.type = NO_ROUTER;
PRINT_WARN("Error (0x%04x) while setting routing type on %s. "
"Type set to 'no router'.\n",
rc, QETH_CARD_IFNAME(card));
}
#endif
return rc;
}
int
qeth_set_large_send(struct qeth_card *card, enum qeth_large_send_types type)
{
int rc = 0;
if (card->dev == NULL) {
card->options.large_send = type;
return 0;
}
if (card->state == CARD_STATE_UP)
netif_tx_disable(card->dev);
card->options.large_send = type;
switch (card->options.large_send) {
case QETH_LARGE_SEND_EDDP:
card->dev->features |= NETIF_F_TSO | NETIF_F_SG;
break;
case QETH_LARGE_SEND_TSO:
if (qeth_is_supported(card, IPA_OUTBOUND_TSO)){
card->dev->features |= NETIF_F_TSO | NETIF_F_SG;
} else {
PRINT_WARN("TSO not supported on %s. "
"large_send set to 'no'.\n",
card->dev->name);
card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG);
card->options.large_send = QETH_LARGE_SEND_NO;
rc = -EOPNOTSUPP;
}
break;
default: /* includes QETH_LARGE_SEND_NO */
card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG);
break;
}
if (card->state == CARD_STATE_UP)
netif_wake_queue(card->dev);
return rc;
}
/*
* softsetup card: init IPA stuff
*/
static int
qeth_softsetup_card(struct qeth_card *card)
{
int rc;
QETH_DBF_TEXT(setup, 2, "softsetp");
if ((rc = qeth_send_startlan(card, QETH_PROT_IPV4))){
QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
if (rc == 0xe080){
PRINT_WARN("LAN on card %s if offline! "
"Continuing softsetup.\n",
CARD_BUS_ID(card));
card->lan_online = 0;
} else
return rc;
} else
card->lan_online = 1;
if (card->info.type==QETH_CARD_TYPE_OSN)
goto out;
qeth_set_large_send(card, card->options.large_send);
if (card->options.layer2) {
card->dev->features |=
NETIF_F_HW_VLAN_FILTER |
NETIF_F_HW_VLAN_TX |
NETIF_F_HW_VLAN_RX;
card->dev->flags|=IFF_MULTICAST|IFF_BROADCAST;
card->info.broadcast_capable=1;
if ((rc = qeth_layer2_initialize(card))) {
QETH_DBF_TEXT_(setup, 2, "L2err%d", rc);
return rc;
}
#ifdef CONFIG_QETH_VLAN
qeth_layer2_process_vlans(card, 0);
#endif
goto out;
}
if ((rc = qeth_setadapter_parms(card)))
QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
if ((rc = qeth_start_ipassists(card)))
QETH_DBF_TEXT_(setup, 2, "3err%d", rc);
if ((rc = qeth_setrouting_v4(card)))
QETH_DBF_TEXT_(setup, 2, "4err%d", rc);
if ((rc = qeth_setrouting_v6(card)))
QETH_DBF_TEXT_(setup, 2, "5err%d", rc);
out:
netif_tx_disable(card->dev);
return 0;
}
#ifdef CONFIG_QETH_IPV6
static int
qeth_get_unique_id_cb(struct qeth_card *card, struct qeth_reply *reply,
unsigned long data)
{
struct qeth_ipa_cmd *cmd;
cmd = (struct qeth_ipa_cmd *) data;
if (cmd->hdr.return_code == 0)
card->info.unique_id = *((__u16 *)
&cmd->data.create_destroy_addr.unique_id[6]);
else {
card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
UNIQUE_ID_NOT_BY_CARD;
PRINT_WARN("couldn't get a unique id from the card on device "
"%s (result=x%x), using default id. ipv6 "
"autoconfig on other lpars may lead to duplicate "
"ip addresses. please use manually "
"configured ones.\n",
CARD_BUS_ID(card), cmd->hdr.return_code);
}
return 0;
}
#endif
static int
qeth_put_unique_id(struct qeth_card *card)
{
int rc = 0;
#ifdef CONFIG_QETH_IPV6
struct qeth_cmd_buffer *iob;
struct qeth_ipa_cmd *cmd;
QETH_DBF_TEXT(trace,2,"puniqeid");
if ((card->info.unique_id & UNIQUE_ID_NOT_BY_CARD) ==
UNIQUE_ID_NOT_BY_CARD)
return -1;
iob = qeth_get_ipacmd_buffer(card, IPA_CMD_DESTROY_ADDR,
QETH_PROT_IPV6);
cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
*((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
card->info.unique_id;
memcpy(&cmd->data.create_destroy_addr.unique_id[0],
card->dev->dev_addr, OSA_ADDR_LEN);
rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
#else
card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
UNIQUE_ID_NOT_BY_CARD;
#endif
return rc;
}
/**
* Clear IP List
*/
static void
qeth_clear_ip_list(struct qeth_card *card, int clean, int recover)
{
struct qeth_ipaddr *addr, *tmp;
unsigned long flags;
QETH_DBF_TEXT(trace,4,"clearip");
spin_lock_irqsave(&card->ip_lock, flags);
/* clear todo list */
list_for_each_entry_safe(addr, tmp, card->ip_tbd_list, entry){
list_del(&addr->entry);
kfree(addr);
}
while (!list_empty(&card->ip_list)) {
addr = list_entry(card->ip_list.next,
struct qeth_ipaddr, entry);
list_del_init(&addr->entry);
if (clean) {
spin_unlock_irqrestore(&card->ip_lock, flags);
qeth_deregister_addr_entry(card, addr);
spin_lock_irqsave(&card->ip_lock, flags);
}
if (!recover || addr->is_multicast) {
kfree(addr);
continue;
}
list_add_tail(&addr->entry, card->ip_tbd_list);
}
spin_unlock_irqrestore(&card->ip_lock, flags);
}
static void
qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
int clear_start_mask)
{
unsigned long flags;
spin_lock_irqsave(&card->thread_mask_lock, flags);
card->thread_allowed_mask = threads;
if (clear_start_mask)
card->thread_start_mask &= threads;
spin_unlock_irqrestore(&card->thread_mask_lock, flags);
wake_up(&card->wait_q);
}
static inline int
qeth_threads_running(struct qeth_card *card, unsigned long threads)
{
unsigned long flags;
int rc = 0;
spin_lock_irqsave(&card->thread_mask_lock, flags);
rc = (card->thread_running_mask & threads);
spin_unlock_irqrestore(&card->thread_mask_lock, flags);
return rc;
}
static int
qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
{
return wait_event_interruptible(card->wait_q,
qeth_threads_running(card, threads) == 0);
}
static int
qeth_stop_card(struct qeth_card *card, int recovery_mode)
{
int rc = 0;
QETH_DBF_TEXT(setup ,2,"stopcard");
QETH_DBF_HEX(setup, 2, &card, sizeof(void *));
qeth_set_allowed_threads(card, 0, 1);
if (qeth_wait_for_threads(card, ~QETH_RECOVER_THREAD))
return -ERESTARTSYS;
if (card->read.state == CH_STATE_UP &&
card->write.state == CH_STATE_UP &&
(card->state == CARD_STATE_UP)) {
if (recovery_mode &&
card->info.type != QETH_CARD_TYPE_OSN) {
qeth_stop(card->dev);
} else {
rtnl_lock();
dev_close(card->dev);
rtnl_unlock();
}
if (!card->use_hard_stop) {
__u8 *mac = &card->dev->dev_addr[0];
rc = qeth_layer2_send_delmac(card, mac);
QETH_DBF_TEXT_(setup, 2, "Lerr%d", rc);
if ((rc = qeth_send_stoplan(card)))
QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
}
card->state = CARD_STATE_SOFTSETUP;
}
if (card->state == CARD_STATE_SOFTSETUP) {
#ifdef CONFIG_QETH_VLAN
if (card->options.layer2)
qeth_layer2_process_vlans(card, 1);
#endif
qeth_clear_ip_list(card, !card->use_hard_stop, 1);
qeth_clear_ipacmd_list(card);
card->state = CARD_STATE_HARDSETUP;
}
if (card->state == CARD_STATE_HARDSETUP) {
if ((!card->use_hard_stop) &&
(!card->options.layer2))
if ((rc = qeth_put_unique_id(card)))
QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
qeth_qdio_clear_card(card, 0);
qeth_clear_qdio_buffers(card);
qeth_clear_working_pool_list(card);
card->state = CARD_STATE_DOWN;
}
if (card->state == CARD_STATE_DOWN) {
qeth_clear_cmd_buffers(&card->read);
qeth_clear_cmd_buffers(&card->write);
}
card->use_hard_stop = 0;
return rc;
}
static int
qeth_get_unique_id(struct qeth_card *card)
{
int rc = 0;
#ifdef CONFIG_QETH_IPV6
struct qeth_cmd_buffer *iob;
struct qeth_ipa_cmd *cmd;
QETH_DBF_TEXT(setup, 2, "guniqeid");
if (!qeth_is_supported(card,IPA_IPV6)) {
card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
UNIQUE_ID_NOT_BY_CARD;
return 0;
}
iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
QETH_PROT_IPV6);
cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
*((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
card->info.unique_id;
rc = qeth_send_ipa_cmd(card, iob, qeth_get_unique_id_cb, NULL);
#else
card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
UNIQUE_ID_NOT_BY_CARD;
#endif
return rc;
}
static void
qeth_print_status_with_portname(struct qeth_card *card)
{
char dbf_text[15];
int i;
sprintf(dbf_text, "%s", card->info.portname + 1);
for (i = 0; i < 8; i++)
dbf_text[i] =
(char) _ebcasc[(__u8) dbf_text[i]];
dbf_text[8] = 0;
printk("qeth: Device %s/%s/%s is a%s card%s%s%s\n"
"with link type %s (portname: %s)\n",
CARD_RDEV_ID(card),
CARD_WDEV_ID(card),
CARD_DDEV_ID(card),
qeth_get_cardname(card),
(card->info.mcl_level[0]) ? " (level: " : "",
(card->info.mcl_level[0]) ? card->info.mcl_level : "",
(card->info.mcl_level[0]) ? ")" : "",
qeth_get_cardname_short(card),
dbf_text);
}
static void
qeth_print_status_no_portname(struct qeth_card *card)
{
if (card->info.portname[0])
printk("qeth: Device %s/%s/%s is a%s "
"card%s%s%s\nwith link type %s "
"(no portname needed by interface).\n",
CARD_RDEV_ID(card),
CARD_WDEV_ID(card),
CARD_DDEV_ID(card),
qeth_get_cardname(card),
(card->info.mcl_level[0]) ? " (level: " : "",
(card->info.mcl_level[0]) ? card->info.mcl_level : "",
(card->info.mcl_level[0]) ? ")" : "",
qeth_get_cardname_short(card));
else
printk("qeth: Device %s/%s/%s is a%s "
"card%s%s%s\nwith link type %s.\n",
CARD_RDEV_ID(card),
CARD_WDEV_ID(card),
CARD_DDEV_ID(card),
qeth_get_cardname(card),
(card->info.mcl_level[0]) ? " (level: " : "",
(card->info.mcl_level[0]) ? card->info.mcl_level : "",
(card->info.mcl_level[0]) ? ")" : "",
qeth_get_cardname_short(card));
}
static void
qeth_print_status_message(struct qeth_card *card)
{
switch (card->info.type) {
case QETH_CARD_TYPE_OSAE:
/* VM will use a non-zero first character
* to indicate a HiperSockets like reporting
* of the level OSA sets the first character to zero
* */
if (!card->info.mcl_level[0]) {
sprintf(card->info.mcl_level,"%02x%02x",
card->info.mcl_level[2],
card->info.mcl_level[3]);
card->info.mcl_level[QETH_MCL_LENGTH] = 0;
break;
}
/* fallthrough */
case QETH_CARD_TYPE_IQD:
card->info.mcl_level[0] = (char) _ebcasc[(__u8)
card->info.mcl_level[0]];
card->info.mcl_level[1] = (char) _ebcasc[(__u8)
card->info.mcl_level[1]];
card->info.mcl_level[2] = (char) _ebcasc[(__u8)
card->info.mcl_level[2]];
card->info.mcl_level[3] = (char) _ebcasc[(__u8)
card->info.mcl_level[3]];
card->info.mcl_level[QETH_MCL_LENGTH] = 0;
break;
default:
memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
}
if (card->info.portname_required)
qeth_print_status_with_portname(card);
else
qeth_print_status_no_portname(card);
}
static int
qeth_register_netdev(struct qeth_card *card)
{
QETH_DBF_TEXT(setup, 3, "regnetd");
if (card->dev->reg_state != NETREG_UNINITIALIZED)
return 0;
/* sysfs magic */
SET_NETDEV_DEV(card->dev, &card->gdev->dev);
return register_netdev(card->dev);
}
static void
qeth_start_again(struct qeth_card *card, int recovery_mode)
{
QETH_DBF_TEXT(setup ,2, "startag");
if (recovery_mode &&
card->info.type != QETH_CARD_TYPE_OSN) {
qeth_open(card->dev);
} else {
rtnl_lock();
dev_open(card->dev);
rtnl_unlock();
}
/* this also sets saved unicast addresses */
qeth_set_multicast_list(card->dev);
}
/* Layer 2 specific stuff */
#define IGNORE_PARAM_EQ(option,value,reset_value,msg) \
if (card->options.option == value) { \
PRINT_ERR("%s not supported with layer 2 " \
"functionality, ignoring option on read" \
"channel device %s .\n",msg,CARD_RDEV_ID(card)); \
card->options.option = reset_value; \
}
#define IGNORE_PARAM_NEQ(option,value,reset_value,msg) \
if (card->options.option != value) { \
PRINT_ERR("%s not supported with layer 2 " \
"functionality, ignoring option on read" \
"channel device %s .\n",msg,CARD_RDEV_ID(card)); \
card->options.option = reset_value; \
}
static void qeth_make_parameters_consistent(struct qeth_card *card)
{
if (card->options.layer2 == 0)
return;
if (card->info.type == QETH_CARD_TYPE_OSN)
return;
if (card->info.type == QETH_CARD_TYPE_IQD) {
PRINT_ERR("Device %s does not support layer 2 functionality." \
" Ignoring layer2 option.\n",CARD_BUS_ID(card));
card->options.layer2 = 0;
return;
}
IGNORE_PARAM_NEQ(route4.type, NO_ROUTER, NO_ROUTER,
"Routing options are");
#ifdef CONFIG_QETH_IPV6
IGNORE_PARAM_NEQ(route6.type, NO_ROUTER, NO_ROUTER,
"Routing options are");
#endif
IGNORE_PARAM_EQ(checksum_type, HW_CHECKSUMMING,
QETH_CHECKSUM_DEFAULT,
"Checksumming options are");
IGNORE_PARAM_NEQ(broadcast_mode, QETH_TR_BROADCAST_ALLRINGS,
QETH_TR_BROADCAST_ALLRINGS,
"Broadcast mode options are");
IGNORE_PARAM_NEQ(macaddr_mode, QETH_TR_MACADDR_NONCANONICAL,
QETH_TR_MACADDR_NONCANONICAL,
"Canonical MAC addr options are");
IGNORE_PARAM_NEQ(fake_broadcast, 0, 0,
"Broadcast faking options are");
IGNORE_PARAM_NEQ(add_hhlen, DEFAULT_ADD_HHLEN,
DEFAULT_ADD_HHLEN,"Option add_hhlen is");
IGNORE_PARAM_NEQ(fake_ll, 0, 0,"Option fake_ll is");
}
static int
__qeth_set_online(struct ccwgroup_device *gdev, int recovery_mode)
{
struct qeth_card *card = gdev->dev.driver_data;
int rc = 0;
enum qeth_card_states recover_flag;
BUG_ON(!card);
QETH_DBF_TEXT(setup ,2, "setonlin");
QETH_DBF_HEX(setup, 2, &card, sizeof(void *));
qeth_set_allowed_threads(card, QETH_RECOVER_THREAD, 1);
if (qeth_wait_for_threads(card, ~QETH_RECOVER_THREAD)){
PRINT_WARN("set_online of card %s interrupted by user!\n",
CARD_BUS_ID(card));
return -ERESTARTSYS;
}
recover_flag = card->state;
if ((rc = ccw_device_set_online(CARD_RDEV(card))) ||
(rc = ccw_device_set_online(CARD_WDEV(card))) ||
(rc = ccw_device_set_online(CARD_DDEV(card)))){
QETH_DBF_TEXT_(setup, 2, "1err%d", rc);
return -EIO;
}
qeth_make_parameters_consistent(card);
if ((rc = qeth_hardsetup_card(card))){
QETH_DBF_TEXT_(setup, 2, "2err%d", rc);
goto out_remove;
}
card->state = CARD_STATE_HARDSETUP;
if (!(rc = qeth_query_ipassists(card,QETH_PROT_IPV4)))
rc = qeth_get_unique_id(card);
if (rc && card->options.layer2 == 0) {
QETH_DBF_TEXT_(setup, 2, "3err%d", rc);
goto out_remove;
}
qeth_print_status_message(card);
if ((rc = qeth_register_netdev(card))){
QETH_DBF_TEXT_(setup, 2, "4err%d", rc);
goto out_remove;
}
if ((rc = qeth_softsetup_card(card))){
QETH_DBF_TEXT_(setup, 2, "5err%d", rc);
goto out_remove;
}
if ((rc = qeth_init_qdio_queues(card))){
QETH_DBF_TEXT_(setup, 2, "6err%d", rc);
goto out_remove;
}
card->state = CARD_STATE_SOFTSETUP;
netif_carrier_on(card->dev);
qeth_set_allowed_threads(card, 0xffffffff, 0);
if (recover_flag == CARD_STATE_RECOVER)
qeth_start_again(card, recovery_mode);
qeth_notify_processes();
return 0;
out_remove:
card->use_hard_stop = 1;
qeth_stop_card(card, 0);
ccw_device_set_offline(CARD_DDEV(card));
ccw_device_set_offline(CARD_WDEV(card));
ccw_device_set_offline(CARD_RDEV(card));
if (recover_flag == CARD_STATE_RECOVER)
card->state = CARD_STATE_RECOVER;
else
card->state = CARD_STATE_DOWN;
return -ENODEV;
}
static int
qeth_set_online(struct ccwgroup_device *gdev)
{
return __qeth_set_online(gdev, 0);
}
static struct ccw_device_id qeth_ids[] = {
{CCW_DEVICE(0x1731, 0x01), .driver_info = QETH_CARD_TYPE_OSAE},
{CCW_DEVICE(0x1731, 0x05), .driver_info = QETH_CARD_TYPE_IQD},
{CCW_DEVICE(0x1731, 0x06), .driver_info = QETH_CARD_TYPE_OSN},
{},
};
MODULE_DEVICE_TABLE(ccw, qeth_ids);
struct device *qeth_root_dev = NULL;
struct ccwgroup_driver qeth_ccwgroup_driver = {
.owner = THIS_MODULE,
.name = "qeth",
.driver_id = 0xD8C5E3C8,
.probe = qeth_probe_device,
.remove = qeth_remove_device,
.set_online = qeth_set_online,
.set_offline = qeth_set_offline,
};
struct ccw_driver qeth_ccw_driver = {
.name = "qeth",
.ids = qeth_ids,
.probe = ccwgroup_probe_ccwdev,
.remove = ccwgroup_remove_ccwdev,
};
static void
qeth_unregister_dbf_views(void)
{
if (qeth_dbf_setup)
debug_unregister(qeth_dbf_setup);
if (qeth_dbf_qerr)
debug_unregister(qeth_dbf_qerr);
if (qeth_dbf_sense)
debug_unregister(qeth_dbf_sense);
if (qeth_dbf_misc)
debug_unregister(qeth_dbf_misc);
if (qeth_dbf_data)
debug_unregister(qeth_dbf_data);
if (qeth_dbf_control)
debug_unregister(qeth_dbf_control);
if (qeth_dbf_trace)
debug_unregister(qeth_dbf_trace);
}
static int
qeth_register_dbf_views(void)
{
qeth_dbf_setup = debug_register(QETH_DBF_SETUP_NAME,
QETH_DBF_SETUP_PAGES,
QETH_DBF_SETUP_NR_AREAS,
QETH_DBF_SETUP_LEN);
qeth_dbf_misc = debug_register(QETH_DBF_MISC_NAME,
QETH_DBF_MISC_PAGES,
QETH_DBF_MISC_NR_AREAS,
QETH_DBF_MISC_LEN);
qeth_dbf_data = debug_register(QETH_DBF_DATA_NAME,
QETH_DBF_DATA_PAGES,
QETH_DBF_DATA_NR_AREAS,
QETH_DBF_DATA_LEN);
qeth_dbf_control = debug_register(QETH_DBF_CONTROL_NAME,
QETH_DBF_CONTROL_PAGES,
QETH_DBF_CONTROL_NR_AREAS,
QETH_DBF_CONTROL_LEN);
qeth_dbf_sense = debug_register(QETH_DBF_SENSE_NAME,
QETH_DBF_SENSE_PAGES,
QETH_DBF_SENSE_NR_AREAS,
QETH_DBF_SENSE_LEN);
qeth_dbf_qerr = debug_register(QETH_DBF_QERR_NAME,
QETH_DBF_QERR_PAGES,
QETH_DBF_QERR_NR_AREAS,
QETH_DBF_QERR_LEN);
qeth_dbf_trace = debug_register(QETH_DBF_TRACE_NAME,
QETH_DBF_TRACE_PAGES,
QETH_DBF_TRACE_NR_AREAS,
QETH_DBF_TRACE_LEN);
if ((qeth_dbf_setup == NULL) || (qeth_dbf_misc == NULL) ||
(qeth_dbf_data == NULL) || (qeth_dbf_control == NULL) ||
(qeth_dbf_sense == NULL) || (qeth_dbf_qerr == NULL) ||
(qeth_dbf_trace == NULL)) {
qeth_unregister_dbf_views();
return -ENOMEM;
}
debug_register_view(qeth_dbf_setup, &debug_hex_ascii_view);
debug_set_level(qeth_dbf_setup, QETH_DBF_SETUP_LEVEL);
debug_register_view(qeth_dbf_misc, &debug_hex_ascii_view);
debug_set_level(qeth_dbf_misc, QETH_DBF_MISC_LEVEL);
debug_register_view(qeth_dbf_data, &debug_hex_ascii_view);
debug_set_level(qeth_dbf_data, QETH_DBF_DATA_LEVEL);
debug_register_view(qeth_dbf_control, &debug_hex_ascii_view);
debug_set_level(qeth_dbf_control, QETH_DBF_CONTROL_LEVEL);
debug_register_view(qeth_dbf_sense, &debug_hex_ascii_view);
debug_set_level(qeth_dbf_sense, QETH_DBF_SENSE_LEVEL);
debug_register_view(qeth_dbf_qerr, &debug_hex_ascii_view);
debug_set_level(qeth_dbf_qerr, QETH_DBF_QERR_LEVEL);
debug_register_view(qeth_dbf_trace, &debug_hex_ascii_view);
debug_set_level(qeth_dbf_trace, QETH_DBF_TRACE_LEVEL);
return 0;
}
#ifdef CONFIG_QETH_IPV6
extern struct neigh_table arp_tbl;
static struct neigh_ops *arp_direct_ops;
static int (*qeth_old_arp_constructor) (struct neighbour *);
static struct neigh_ops arp_direct_ops_template = {
.family = AF_INET,
.solicit = NULL,
.error_report = NULL,
.output = dev_queue_xmit,
.connected_output = dev_queue_xmit,
.hh_output = dev_queue_xmit,
.queue_xmit = dev_queue_xmit
};
static int
qeth_arp_constructor(struct neighbour *neigh)
{
struct net_device *dev = neigh->dev;
struct in_device *in_dev;
struct neigh_parms *parms;
struct qeth_card *card;
card = qeth_get_card_from_dev(dev);
if (card == NULL)
goto out;
if((card->options.layer2) ||
(card->dev->hard_header == qeth_fake_header))
goto out;
rcu_read_lock();
in_dev = __in_dev_get_rcu(dev);
if (in_dev == NULL) {
rcu_read_unlock();
return -EINVAL;
}
parms = in_dev->arp_parms;
__neigh_parms_put(neigh->parms);
neigh->parms = neigh_parms_clone(parms);
rcu_read_unlock();
neigh->type = inet_addr_type(*(__be32 *) neigh->primary_key);
neigh->nud_state = NUD_NOARP;
neigh->ops = arp_direct_ops;
neigh->output = neigh->ops->queue_xmit;
return 0;
out:
return qeth_old_arp_constructor(neigh);
}
#endif /*CONFIG_QETH_IPV6*/
/*
* IP address takeover related functions
*/
static void
qeth_clear_ipato_list(struct qeth_card *card)
{
struct qeth_ipato_entry *ipatoe, *tmp;
unsigned long flags;
spin_lock_irqsave(&card->ip_lock, flags);
list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
list_del(&ipatoe->entry);
kfree(ipatoe);
}
spin_unlock_irqrestore(&card->ip_lock, flags);
}
int
qeth_add_ipato_entry(struct qeth_card *card, struct qeth_ipato_entry *new)
{
struct qeth_ipato_entry *ipatoe;
unsigned long flags;
int rc = 0;
QETH_DBF_TEXT(trace, 2, "addipato");
spin_lock_irqsave(&card->ip_lock, flags);
list_for_each_entry(ipatoe, &card->ipato.entries, entry){
if (ipatoe->proto != new->proto)
continue;
if (!memcmp(ipatoe->addr, new->addr,
(ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
(ipatoe->mask_bits == new->mask_bits)){
PRINT_WARN("ipato entry already exists!\n");
rc = -EEXIST;
break;
}
}
if (!rc) {
list_add_tail(&new->entry, &card->ipato.entries);
}
spin_unlock_irqrestore(&card->ip_lock, flags);
return rc;
}
void
qeth_del_ipato_entry(struct qeth_card *card, enum qeth_prot_versions proto,
u8 *addr, int mask_bits)
{
struct qeth_ipato_entry *ipatoe, *tmp;
unsigned long flags;
QETH_DBF_TEXT(trace, 2, "delipato");
spin_lock_irqsave(&card->ip_lock, flags);
list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry){
if (ipatoe->proto != proto)
continue;
if (!memcmp(ipatoe->addr, addr,
(proto == QETH_PROT_IPV4)? 4:16) &&
(ipatoe->mask_bits == mask_bits)){
list_del(&ipatoe->entry);
kfree(ipatoe);
}
}
spin_unlock_irqrestore(&card->ip_lock, flags);
}
static inline void
qeth_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
{
int i, j;
u8 octet;
for (i = 0; i < len; ++i){
octet = addr[i];
for (j = 7; j >= 0; --j){
bits[i*8 + j] = octet & 1;
octet >>= 1;
}
}
}
static int
qeth_is_addr_covered_by_ipato(struct qeth_card *card, struct qeth_ipaddr *addr)
{
struct qeth_ipato_entry *ipatoe;
u8 addr_bits[128] = {0, };
u8 ipatoe_bits[128] = {0, };
int rc = 0;
if (!card->ipato.enabled)
return 0;
qeth_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
(addr->proto == QETH_PROT_IPV4)? 4:16);
list_for_each_entry(ipatoe, &card->ipato.entries, entry){
if (addr->proto != ipatoe->proto)
continue;
qeth_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
(ipatoe->proto==QETH_PROT_IPV4) ?
4:16);
if (addr->proto == QETH_PROT_IPV4)
rc = !memcmp(addr_bits, ipatoe_bits,
min(32, ipatoe->mask_bits));
else
rc = !memcmp(addr_bits, ipatoe_bits,
min(128, ipatoe->mask_bits));
if (rc)
break;
}
/* invert? */
if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
rc = !rc;
else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
rc = !rc;
return rc;
}
/*
* VIPA related functions
*/
int
qeth_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
const u8 *addr)
{
struct qeth_ipaddr *ipaddr;
unsigned long flags;
int rc = 0;
ipaddr = qeth_get_addr_buffer(proto);
if (ipaddr){
if (proto == QETH_PROT_IPV4){
QETH_DBF_TEXT(trace, 2, "addvipa4");
memcpy(&ipaddr->u.a4.addr, addr, 4);
ipaddr->u.a4.mask = 0;
#ifdef CONFIG_QETH_IPV6
} else if (proto == QETH_PROT_IPV6){
QETH_DBF_TEXT(trace, 2, "addvipa6");
memcpy(&ipaddr->u.a6.addr, addr, 16);
ipaddr->u.a6.pfxlen = 0;
#endif
}
ipaddr->type = QETH_IP_TYPE_VIPA;
ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
} else
return -ENOMEM;
spin_lock_irqsave(&card->ip_lock, flags);
if (__qeth_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
__qeth_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
rc = -EEXIST;
spin_unlock_irqrestore(&card->ip_lock, flags);
if (rc){
PRINT_WARN("Cannot add VIPA. Address already exists!\n");
return rc;
}
if (!qeth_add_ip(card, ipaddr))
kfree(ipaddr);
qeth_set_ip_addr_list(card);
return rc;
}
void
qeth_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
const u8 *addr)
{
struct qeth_ipaddr *ipaddr;
ipaddr = qeth_get_addr_buffer(proto);
if (ipaddr){
if (proto == QETH_PROT_IPV4){
QETH_DBF_TEXT(trace, 2, "delvipa4");
memcpy(&ipaddr->u.a4.addr, addr, 4);
ipaddr->u.a4.mask = 0;
#ifdef CONFIG_QETH_IPV6
} else if (proto == QETH_PROT_IPV6){
QETH_DBF_TEXT(trace, 2, "delvipa6");
memcpy(&ipaddr->u.a6.addr, addr, 16);
ipaddr->u.a6.pfxlen = 0;
#endif
}
ipaddr->type = QETH_IP_TYPE_VIPA;
} else
return;
if (!qeth_delete_ip(card, ipaddr))
kfree(ipaddr);
qeth_set_ip_addr_list(card);
}
/*
* proxy ARP related functions
*/
int
qeth_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
const u8 *addr)
{
struct qeth_ipaddr *ipaddr;
unsigned long flags;
int rc = 0;
ipaddr = qeth_get_addr_buffer(proto);
if (ipaddr){
if (proto == QETH_PROT_IPV4){
QETH_DBF_TEXT(trace, 2, "addrxip4");
memcpy(&ipaddr->u.a4.addr, addr, 4);
ipaddr->u.a4.mask = 0;
#ifdef CONFIG_QETH_IPV6
} else if (proto == QETH_PROT_IPV6){
QETH_DBF_TEXT(trace, 2, "addrxip6");
memcpy(&ipaddr->u.a6.addr, addr, 16);
ipaddr->u.a6.pfxlen = 0;
#endif
}
ipaddr->type = QETH_IP_TYPE_RXIP;
ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
ipaddr->del_flags = 0;
} else
return -ENOMEM;
spin_lock_irqsave(&card->ip_lock, flags);
if (__qeth_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
__qeth_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
rc = -EEXIST;
spin_unlock_irqrestore(&card->ip_lock, flags);
if (rc){
PRINT_WARN("Cannot add RXIP. Address already exists!\n");
return rc;
}
if (!qeth_add_ip(card, ipaddr))
kfree(ipaddr);
qeth_set_ip_addr_list(card);
return 0;
}
void
qeth_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
const u8 *addr)
{
struct qeth_ipaddr *ipaddr;
ipaddr = qeth_get_addr_buffer(proto);
if (ipaddr){
if (proto == QETH_PROT_IPV4){
QETH_DBF_TEXT(trace, 2, "addrxip4");
memcpy(&ipaddr->u.a4.addr, addr, 4);
ipaddr->u.a4.mask = 0;
#ifdef CONFIG_QETH_IPV6
} else if (proto == QETH_PROT_IPV6){
QETH_DBF_TEXT(trace, 2, "addrxip6");
memcpy(&ipaddr->u.a6.addr, addr, 16);
ipaddr->u.a6.pfxlen = 0;
#endif
}
ipaddr->type = QETH_IP_TYPE_RXIP;
} else
return;
if (!qeth_delete_ip(card, ipaddr))
kfree(ipaddr);
qeth_set_ip_addr_list(card);
}
/**
* IP event handler
*/
static int
qeth_ip_event(struct notifier_block *this,
unsigned long event,void *ptr)
{
struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
struct net_device *dev =(struct net_device *) ifa->ifa_dev->dev;
struct qeth_ipaddr *addr;
struct qeth_card *card;
QETH_DBF_TEXT(trace,3,"ipevent");
card = qeth_get_card_from_dev(dev);
if (!card)
return NOTIFY_DONE;
if (card->options.layer2)
return NOTIFY_DONE;
addr = qeth_get_addr_buffer(QETH_PROT_IPV4);
if (addr != NULL) {
addr->u.a4.addr = ifa->ifa_address;
addr->u.a4.mask = ifa->ifa_mask;
addr->type = QETH_IP_TYPE_NORMAL;
} else
goto out;
switch(event) {
case NETDEV_UP:
if (!qeth_add_ip(card, addr))
kfree(addr);
break;
case NETDEV_DOWN:
if (!qeth_delete_ip(card, addr))
kfree(addr);
break;
default:
break;
}
qeth_set_ip_addr_list(card);
out:
return NOTIFY_DONE;
}
static struct notifier_block qeth_ip_notifier = {
qeth_ip_event,
NULL,
};
#ifdef CONFIG_QETH_IPV6
/**
* IPv6 event handler
*/
static int
qeth_ip6_event(struct notifier_block *this,
unsigned long event,void *ptr)
{
struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
struct net_device *dev = (struct net_device *)ifa->idev->dev;
struct qeth_ipaddr *addr;
struct qeth_card *card;
QETH_DBF_TEXT(trace,3,"ip6event");
card = qeth_get_card_from_dev(dev);
if (!card)
return NOTIFY_DONE;
if (!qeth_is_supported(card, IPA_IPV6))
return NOTIFY_DONE;
addr = qeth_get_addr_buffer(QETH_PROT_IPV6);
if (addr != NULL) {
memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
addr->u.a6.pfxlen = ifa->prefix_len;
addr->type = QETH_IP_TYPE_NORMAL;
} else
goto out;
switch(event) {
case NETDEV_UP:
if (!qeth_add_ip(card, addr))
kfree(addr);
break;
case NETDEV_DOWN:
if (!qeth_delete_ip(card, addr))
kfree(addr);
break;
default:
break;
}
qeth_set_ip_addr_list(card);
out:
return NOTIFY_DONE;
}
static struct notifier_block qeth_ip6_notifier = {
qeth_ip6_event,
NULL,
};
#endif
static int
__qeth_reboot_event_card(struct device *dev, void *data)
{
struct qeth_card *card;
card = (struct qeth_card *) dev->driver_data;
qeth_clear_ip_list(card, 0, 0);
qeth_qdio_clear_card(card, 0);
return 0;
}
static int
qeth_reboot_event(struct notifier_block *this, unsigned long event, void *ptr)
{
int ret;
ret = driver_for_each_device(&qeth_ccwgroup_driver.driver, NULL, NULL,
__qeth_reboot_event_card);
return ret ? NOTIFY_BAD : NOTIFY_DONE;
}
static struct notifier_block qeth_reboot_notifier = {
qeth_reboot_event,
NULL,
};
static int
qeth_register_notifiers(void)
{
int r;
QETH_DBF_TEXT(trace,5,"regnotif");
if ((r = register_reboot_notifier(&qeth_reboot_notifier)))
return r;
if ((r = register_inetaddr_notifier(&qeth_ip_notifier)))
goto out_reboot;
#ifdef CONFIG_QETH_IPV6
if ((r = register_inet6addr_notifier(&qeth_ip6_notifier)))
goto out_ipv4;
#endif
return 0;
#ifdef CONFIG_QETH_IPV6
out_ipv4:
unregister_inetaddr_notifier(&qeth_ip_notifier);
#endif
out_reboot:
unregister_reboot_notifier(&qeth_reboot_notifier);
return r;
}
/**
* unregister all event notifiers
*/
static void
qeth_unregister_notifiers(void)
{
QETH_DBF_TEXT(trace,5,"unregnot");
BUG_ON(unregister_reboot_notifier(&qeth_reboot_notifier));
BUG_ON(unregister_inetaddr_notifier(&qeth_ip_notifier));
#ifdef CONFIG_QETH_IPV6
BUG_ON(unregister_inet6addr_notifier(&qeth_ip6_notifier));
#endif /* QETH_IPV6 */
}
#ifdef CONFIG_QETH_IPV6
static int
qeth_ipv6_init(void)
{
qeth_old_arp_constructor = arp_tbl.constructor;
write_lock_bh(&arp_tbl.lock);
arp_tbl.constructor = qeth_arp_constructor;
write_unlock_bh(&arp_tbl.lock);
arp_direct_ops = (struct neigh_ops*)
kmalloc(sizeof(struct neigh_ops), GFP_KERNEL);
if (!arp_direct_ops)
return -ENOMEM;
memcpy(arp_direct_ops, &arp_direct_ops_template,
sizeof(struct neigh_ops));
return 0;
}
static void
qeth_ipv6_uninit(void)
{
write_lock_bh(&arp_tbl.lock);
arp_tbl.constructor = qeth_old_arp_constructor;
write_unlock_bh(&arp_tbl.lock);
kfree(arp_direct_ops);
}
#endif /* CONFIG_QETH_IPV6 */
static void
qeth_sysfs_unregister(void)
{
s390_root_dev_unregister(qeth_root_dev);
qeth_remove_driver_attributes();
ccw_driver_unregister(&qeth_ccw_driver);
ccwgroup_driver_unregister(&qeth_ccwgroup_driver);
}
/**
* register qeth at sysfs
*/
static int
qeth_sysfs_register(void)
{
int rc;
rc = ccwgroup_driver_register(&qeth_ccwgroup_driver);
if (rc)
goto out;
rc = ccw_driver_register(&qeth_ccw_driver);
if (rc)
goto out_ccw_driver;
rc = qeth_create_driver_attributes();
if (rc)
goto out_qeth_attr;
qeth_root_dev = s390_root_dev_register("qeth");
rc = IS_ERR(qeth_root_dev) ? PTR_ERR(qeth_root_dev) : 0;
if (!rc)
goto out;
qeth_remove_driver_attributes();
out_qeth_attr:
ccw_driver_unregister(&qeth_ccw_driver);
out_ccw_driver:
ccwgroup_driver_unregister(&qeth_ccwgroup_driver);
out:
return rc;
}
/***
* init function
*/
static int __init
qeth_init(void)
{
int rc;
PRINT_INFO("loading %s\n", version);
INIT_LIST_HEAD(&qeth_card_list.list);
INIT_LIST_HEAD(&qeth_notify_list);
spin_lock_init(&qeth_notify_lock);
rwlock_init(&qeth_card_list.rwlock);
rc = qeth_register_dbf_views();
if (rc)
goto out_err;
rc = qeth_sysfs_register();
if (rc)
goto out_dbf;
#ifdef CONFIG_QETH_IPV6
rc = qeth_ipv6_init();
if (rc) {
PRINT_ERR("Out of memory during ipv6 init code = %d\n", rc);
goto out_sysfs;
}
#endif /* QETH_IPV6 */
rc = qeth_register_notifiers();
if (rc)
goto out_ipv6;
rc = qeth_create_procfs_entries();
if (rc)
goto out_notifiers;
return rc;
out_notifiers:
qeth_unregister_notifiers();
out_ipv6:
#ifdef CONFIG_QETH_IPV6
qeth_ipv6_uninit();
out_sysfs:
#endif /* QETH_IPV6 */
qeth_sysfs_unregister();
out_dbf:
qeth_unregister_dbf_views();
out_err:
PRINT_ERR("Initialization failed with code %d\n", rc);
return rc;
}
static void
__exit qeth_exit(void)
{
struct qeth_card *card, *tmp;
unsigned long flags;
QETH_DBF_TEXT(trace,1, "cleanup.");
/*
* Weed would not need to clean up our devices here, because the
* common device layer calls qeth_remove_device for each device
* as soon as we unregister our driver (done in qeth_sysfs_unregister).
* But we do cleanup here so we can do a "soft" shutdown of our cards.
* qeth_remove_device called by the common device layer would otherwise
* do a "hard" shutdown (card->use_hard_stop is set to one in
* qeth_remove_device).
*/
again:
read_lock_irqsave(&qeth_card_list.rwlock, flags);
list_for_each_entry_safe(card, tmp, &qeth_card_list.list, list){
read_unlock_irqrestore(&qeth_card_list.rwlock, flags);
qeth_set_offline(card->gdev);
qeth_remove_device(card->gdev);
goto again;
}
read_unlock_irqrestore(&qeth_card_list.rwlock, flags);
#ifdef CONFIG_QETH_IPV6
qeth_ipv6_uninit();
#endif
qeth_unregister_notifiers();
qeth_remove_procfs_entries();
qeth_sysfs_unregister();
qeth_unregister_dbf_views();
printk("qeth: removed\n");
}
EXPORT_SYMBOL(qeth_osn_register);
EXPORT_SYMBOL(qeth_osn_deregister);
EXPORT_SYMBOL(qeth_osn_assist);
module_init(qeth_init);
module_exit(qeth_exit);
MODULE_AUTHOR("Frank Pavlic <fpavlic@de.ibm.com>");
MODULE_DESCRIPTION("Linux on zSeries OSA Express and HiperSockets support\n" \
"Copyright 2000,2003 IBM Corporation\n");
MODULE_LICENSE("GPL");
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