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Automatic merge of /spare/repo/netdev-2.6 branch qeth

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This commit is contained in:
2005-05-25 22:11:06 -04:00 committed by Jeff Garzik
commit 8a75e7d644
14 changed files with 914 additions and 901 deletions
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3
drivers/s390/net/Makefile
View File

@ -9,6 +9,7 @@ obj-$(CONFIG_NETIUCV) += netiucv.o fsm.o
obj-$(CONFIG_SMSGIUCV) += smsgiucv.o
obj-$(CONFIG_CTC) += ctc.o fsm.o cu3088.o
obj-$(CONFIG_LCS) += lcs.o cu3088.o
qeth-y := qeth_main.o qeth_mpc.o qeth_sys.o qeth_eddp.o qeth_tso.o
obj-$(CONFIG_CLAW) += claw.o cu3088.o
qeth-y := qeth_main.o qeth_mpc.o qeth_sys.o qeth_eddp.o
qeth-$(CONFIG_PROC_FS) += qeth_proc.o
obj-$(CONFIG_QETH) += qeth.o

12
drivers/s390/net/ctcdbug.h
View File

@ -1,6 +1,6 @@
/*
*
* linux/drivers/s390/net/ctcdbug.h ($Revision: 1.4 $)
* linux/drivers/s390/net/ctcdbug.h ($Revision: 1.5 $)
*
* CTC / ESCON network driver - s390 dbf exploit.
*
@ -9,7 +9,7 @@
* Author(s): Original Code written by
* Peter Tiedemann (ptiedem@de.ibm.com)
*
* $Revision: 1.4 $ $Date: 2004/10/15 09:26:58 $
* $Revision: 1.5 $ $Date: 2005/02/27 19:46:44 $
*
* 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
@ -25,9 +25,11 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef _CTCDBUG_H_
#define _CTCDBUG_H_
#include <asm/debug.h>
#include "ctcmain.h"
/**
* Debug Facility stuff
*/
@ -41,7 +43,7 @@
#define CTC_DBF_DATA_LEN 128
#define CTC_DBF_DATA_INDEX 3
#define CTC_DBF_DATA_NR_AREAS 1
#define CTC_DBF_DATA_LEVEL 2
#define CTC_DBF_DATA_LEVEL 3
#define CTC_DBF_TRACE_NAME "ctc_trace"
#define CTC_DBF_TRACE_LEN 16
@ -121,3 +123,5 @@ hex_dump(unsigned char *buf, size_t len)
printk("\n");
}
#endif

618
drivers/s390/net/ctcmain.c
View File

@ -1,5 +1,5 @@
/*
* $Id: ctcmain.c,v 1.72 2005/03/17 10:51:52 ptiedem Exp $
* $Id: ctcmain.c,v 1.74 2005/03/24 09:04:17 mschwide Exp $
*
* CTC / ESCON network driver
*
@ -37,12 +37,11 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* RELEASE-TAG: CTC/ESCON network driver $Revision: 1.72 $
* RELEASE-TAG: CTC/ESCON network driver $Revision: 1.74 $
*
*/
#undef DEBUG
#include <linux/module.h>
#include <linux/init.h>
#include <linux/kernel.h>
@ -74,288 +73,13 @@
#include "ctctty.h"
#include "fsm.h"
#include "cu3088.h"
#include "ctcdbug.h"
#include "ctcmain.h"
MODULE_AUTHOR("(C) 2000 IBM Corp. by Fritz Elfert (felfert@millenux.com)");
MODULE_DESCRIPTION("Linux for S/390 CTC/Escon Driver");
MODULE_LICENSE("GPL");
/**
* CCW commands, used in this driver.
*/
#define CCW_CMD_WRITE 0x01
#define CCW_CMD_READ 0x02
#define CCW_CMD_SET_EXTENDED 0xc3
#define CCW_CMD_PREPARE 0xe3
#define CTC_PROTO_S390 0
#define CTC_PROTO_LINUX 1
#define CTC_PROTO_LINUX_TTY 2
#define CTC_PROTO_OS390 3
#define CTC_PROTO_MAX 3
#define CTC_BUFSIZE_LIMIT 65535
#define CTC_BUFSIZE_DEFAULT 32768
#define CTC_TIMEOUT_5SEC 5000
#define CTC_INITIAL_BLOCKLEN 2
#define READ 0
#define WRITE 1
#define CTC_ID_SIZE BUS_ID_SIZE+3
struct ctc_profile {
unsigned long maxmulti;
unsigned long maxcqueue;
unsigned long doios_single;
unsigned long doios_multi;
unsigned long txlen;
unsigned long tx_time;
struct timespec send_stamp;
};
/**
* Definition of one channel
*/
struct channel {
/**
* Pointer to next channel in list.
*/
struct channel *next;
char id[CTC_ID_SIZE];
struct ccw_device *cdev;
/**
* Type of this channel.
* CTC/A or Escon for valid channels.
*/
enum channel_types type;
/**
* Misc. flags. See CHANNEL_FLAGS_... below
*/
__u32 flags;
/**
* The protocol of this channel
*/
__u16 protocol;
/**
* I/O and irq related stuff
*/
struct ccw1 *ccw;
struct irb *irb;
/**
* RX/TX buffer size
*/
int max_bufsize;
/**
* Transmit/Receive buffer.
*/
struct sk_buff *trans_skb;
/**
* Universal I/O queue.
*/
struct sk_buff_head io_queue;
/**
* TX queue for collecting skb's during busy.
*/
struct sk_buff_head collect_queue;
/**
* Amount of data in collect_queue.
*/
int collect_len;
/**
* spinlock for collect_queue and collect_len
*/
spinlock_t collect_lock;
/**
* Timer for detecting unresposive
* I/O operations.
*/
fsm_timer timer;
/**
* Retry counter for misc. operations.
*/
int retry;
/**
* The finite state machine of this channel
*/
fsm_instance *fsm;
/**
* The corresponding net_device this channel
* belongs to.
*/
struct net_device *netdev;
struct ctc_profile prof;
unsigned char *trans_skb_data;
__u16 logflags;
};
#define CHANNEL_FLAGS_READ 0
#define CHANNEL_FLAGS_WRITE 1
#define CHANNEL_FLAGS_INUSE 2
#define CHANNEL_FLAGS_BUFSIZE_CHANGED 4
#define CHANNEL_FLAGS_FAILED 8
#define CHANNEL_FLAGS_WAITIRQ 16
#define CHANNEL_FLAGS_RWMASK 1
#define CHANNEL_DIRECTION(f) (f & CHANNEL_FLAGS_RWMASK)
#define LOG_FLAG_ILLEGALPKT 1
#define LOG_FLAG_ILLEGALSIZE 2
#define LOG_FLAG_OVERRUN 4
#define LOG_FLAG_NOMEM 8
#define CTC_LOGLEVEL_INFO 1
#define CTC_LOGLEVEL_NOTICE 2
#define CTC_LOGLEVEL_WARN 4
#define CTC_LOGLEVEL_EMERG 8
#define CTC_LOGLEVEL_ERR 16
#define CTC_LOGLEVEL_DEBUG 32
#define CTC_LOGLEVEL_CRIT 64
#define CTC_LOGLEVEL_DEFAULT \
(CTC_LOGLEVEL_INFO | CTC_LOGLEVEL_NOTICE | CTC_LOGLEVEL_WARN | CTC_LOGLEVEL_CRIT)
#define CTC_LOGLEVEL_MAX ((CTC_LOGLEVEL_CRIT<<1)-1)
static int loglevel = CTC_LOGLEVEL_DEFAULT;
#define ctc_pr_debug(fmt, arg...) \
do { if (loglevel & CTC_LOGLEVEL_DEBUG) printk(KERN_DEBUG fmt,##arg); } while (0)
#define ctc_pr_info(fmt, arg...) \
do { if (loglevel & CTC_LOGLEVEL_INFO) printk(KERN_INFO fmt,##arg); } while (0)
#define ctc_pr_notice(fmt, arg...) \
do { if (loglevel & CTC_LOGLEVEL_NOTICE) printk(KERN_NOTICE fmt,##arg); } while (0)
#define ctc_pr_warn(fmt, arg...) \
do { if (loglevel & CTC_LOGLEVEL_WARN) printk(KERN_WARNING fmt,##arg); } while (0)
#define ctc_pr_emerg(fmt, arg...) \
do { if (loglevel & CTC_LOGLEVEL_EMERG) printk(KERN_EMERG fmt,##arg); } while (0)
#define ctc_pr_err(fmt, arg...) \
do { if (loglevel & CTC_LOGLEVEL_ERR) printk(KERN_ERR fmt,##arg); } while (0)
#define ctc_pr_crit(fmt, arg...) \
do { if (loglevel & CTC_LOGLEVEL_CRIT) printk(KERN_CRIT fmt,##arg); } while (0)
/**
* Linked list of all detected channels.
*/
static struct channel *channels = NULL;
struct ctc_priv {
struct net_device_stats stats;
unsigned long tbusy;
/**
* The finite state machine of this interface.
*/
fsm_instance *fsm;
/**
* The protocol of this device
*/
__u16 protocol;
/**
* Timer for restarting after I/O Errors
*/
fsm_timer restart_timer;
int buffer_size;
struct channel *channel[2];
};
/**
* Definition of our link level header.
*/
struct ll_header {
__u16 length;
__u16 type;
__u16 unused;
};
#define LL_HEADER_LENGTH (sizeof(struct ll_header))
/**
* Compatibility macros for busy handling
* of network devices.
*/
static __inline__ void
ctc_clear_busy(struct net_device * dev)
{
clear_bit(0, &(((struct ctc_priv *) dev->priv)->tbusy));
if (((struct ctc_priv *)dev->priv)->protocol != CTC_PROTO_LINUX_TTY)
netif_wake_queue(dev);
}
static __inline__ int
ctc_test_and_set_busy(struct net_device * dev)
{
if (((struct ctc_priv *)dev->priv)->protocol != CTC_PROTO_LINUX_TTY)
netif_stop_queue(dev);
return test_and_set_bit(0, &((struct ctc_priv *) dev->priv)->tbusy);
}
/**
* Print Banner.
*/
static void
print_banner(void)
{
static int printed = 0;
char vbuf[] = "$Revision: 1.72 $";
char *version = vbuf;
if (printed)
return;
if ((version = strchr(version, ':'))) {
char *p = strchr(version + 1, '$');
if (p)
*p = '\0';
} else
version = " ??? ";
printk(KERN_INFO "CTC driver Version%s"
#ifdef DEBUG
" (DEBUG-VERSION, " __DATE__ __TIME__ ")"
#endif
" initialized\n", version);
printed = 1;
}
/**
* Return type of a detected device.
*/
static enum channel_types
get_channel_type(struct ccw_device_id *id)
{
enum channel_types type = (enum channel_types) id->driver_info;
if (type == channel_type_ficon)
type = channel_type_escon;
return type;
}
/**
* States of the interface statemachine.
*/
@ -371,7 +95,7 @@ enum dev_states {
/**
* MUST be always the last element!!
*/
NR_DEV_STATES
CTC_NR_DEV_STATES
};
static const char *dev_state_names[] = {
@ -399,7 +123,7 @@ enum dev_events {
/**
* MUST be always the last element!!
*/
NR_DEV_EVENTS
CTC_NR_DEV_EVENTS
};
static const char *dev_event_names[] = {
@ -476,40 +200,6 @@ enum ch_events {
NR_CH_EVENTS,
};
static const char *ch_event_names[] = {
"ccw_device success",
"ccw_device busy",
"ccw_device enodev",
"ccw_device ioerr",
"ccw_device unknown",
"Status ATTN & BUSY",
"Status ATTN",
"Status BUSY",
"Unit check remote reset",
"Unit check remote system reset",
"Unit check TX timeout",
"Unit check TX parity",
"Unit check Hardware failure",
"Unit check RX parity",
"Unit check ZERO",
"Unit check Unknown",
"SubChannel check Unknown",
"Machine check failure",
"Machine check operational",
"IRQ normal",
"IRQ final",
"Timer",
"Start",
"Stop",
};
/**
* States of the channel statemachine.
*/
@ -545,6 +235,87 @@ enum ch_states {
NR_CH_STATES,
};
static int loglevel = CTC_LOGLEVEL_DEFAULT;
/**
* Linked list of all detected channels.
*/
static struct channel *channels = NULL;
/**
* Print Banner.
*/
static void
print_banner(void)
{
static int printed = 0;
char vbuf[] = "$Revision: 1.74 $";
char *version = vbuf;
if (printed)
return;
if ((version = strchr(version, ':'))) {
char *p = strchr(version + 1, '$');
if (p)
*p = '\0';
} else
version = " ??? ";
printk(KERN_INFO "CTC driver Version%s"
#ifdef DEBUG
" (DEBUG-VERSION, " __DATE__ __TIME__ ")"
#endif
" initialized\n", version);
printed = 1;
}
/**
* Return type of a detected device.
*/
static enum channel_types
get_channel_type(struct ccw_device_id *id)
{
enum channel_types type = (enum channel_types) id->driver_info;
if (type == channel_type_ficon)
type = channel_type_escon;
return type;
}
static const char *ch_event_names[] = {
"ccw_device success",
"ccw_device busy",
"ccw_device enodev",
"ccw_device ioerr",
"ccw_device unknown",
"Status ATTN & BUSY",
"Status ATTN",
"Status BUSY",
"Unit check remote reset",
"Unit check remote system reset",
"Unit check TX timeout",
"Unit check TX parity",
"Unit check Hardware failure",
"Unit check RX parity",
"Unit check ZERO",
"Unit check Unknown",
"SubChannel check Unknown",
"Machine check failure",
"Machine check operational",
"IRQ normal",
"IRQ final",
"Timer",
"Start",
"Stop",
};
static const char *ch_state_names[] = {
"Idle",
"Stopped",
@ -1934,7 +1705,6 @@ add_channel(struct ccw_device *cdev, enum channel_types type)
ch->cdev = cdev;
snprintf(ch->id, CTC_ID_SIZE, "ch-%s", cdev->dev.bus_id);
ch->type = type;
loglevel = CTC_LOGLEVEL_DEFAULT;
ch->fsm = init_fsm(ch->id, ch_state_names,
ch_event_names, NR_CH_STATES, NR_CH_EVENTS,
ch_fsm, CH_FSM_LEN, GFP_KERNEL);
@ -2697,6 +2467,7 @@ ctc_stats(struct net_device * dev)
/*
* sysfs attributes
*/
static ssize_t
buffer_show(struct device *dev, char *buf)
{
@ -2715,57 +2486,61 @@ buffer_write(struct device *dev, const char *buf, size_t count)
struct ctc_priv *priv;
struct net_device *ndev;
int bs1;
char buffer[16];
DBF_TEXT(trace, 3, __FUNCTION__);
DBF_TEXT(trace, 3, buf);
priv = dev->driver_data;
if (!priv)
if (!priv) {
DBF_TEXT(trace, 3, "bfnopriv");
return -ENODEV;
ndev = priv->channel[READ]->netdev;
if (!ndev)
return -ENODEV;
sscanf(buf, "%u", &bs1);
}
sscanf(buf, "%u", &bs1);
if (bs1 > CTC_BUFSIZE_LIMIT)
return -EINVAL;
goto einval;
if (bs1 < (576 + LL_HEADER_LENGTH + 2))
goto einval;
priv->buffer_size = bs1; // just to overwrite the default
ndev = priv->channel[READ]->netdev;
if (!ndev) {
DBF_TEXT(trace, 3, "bfnondev");
return -ENODEV;
}
if ((ndev->flags & IFF_RUNNING) &&
(bs1 < (ndev->mtu + LL_HEADER_LENGTH + 2)))
return -EINVAL;
if (bs1 < (576 + LL_HEADER_LENGTH + 2))
return -EINVAL;
goto einval;
priv->buffer_size = bs1;
priv->channel[READ]->max_bufsize =
priv->channel[WRITE]->max_bufsize = bs1;
priv->channel[READ]->max_bufsize = bs1;
priv->channel[WRITE]->max_bufsize = bs1;
if (!(ndev->flags & IFF_RUNNING))
ndev->mtu = bs1 - LL_HEADER_LENGTH - 2;
priv->channel[READ]->flags |= CHANNEL_FLAGS_BUFSIZE_CHANGED;
priv->channel[WRITE]->flags |= CHANNEL_FLAGS_BUFSIZE_CHANGED;
sprintf(buffer, "%d",priv->buffer_size);
DBF_TEXT(trace, 3, buffer);
return count;
einval:
DBF_TEXT(trace, 3, "buff_err");
return -EINVAL;
}
static ssize_t
loglevel_show(struct device *dev, char *buf)
{
struct ctc_priv *priv;
priv = dev->driver_data;
if (!priv)
return -ENODEV;
return sprintf(buf, "%d\n", loglevel);
}
static ssize_t
loglevel_write(struct device *dev, const char *buf, size_t count)
{
struct ctc_priv *priv;
int ll1;
DBF_TEXT(trace, 5, __FUNCTION__);
priv = dev->driver_data;
if (!priv)
return -ENODEV;
sscanf(buf, "%i", &ll1);
if ((ll1 > CTC_LOGLEVEL_MAX) || (ll1 < 0))
@ -2835,27 +2610,6 @@ stats_write(struct device *dev, const char *buf, size_t count)
return count;
}
static DEVICE_ATTR(buffer, 0644, buffer_show, buffer_write);
static DEVICE_ATTR(loglevel, 0644, loglevel_show, loglevel_write);
static DEVICE_ATTR(stats, 0644, stats_show, stats_write);
static int
ctc_add_attributes(struct device *dev)
{
// device_create_file(dev, &dev_attr_buffer);
device_create_file(dev, &dev_attr_loglevel);
device_create_file(dev, &dev_attr_stats);
return 0;
}
static void
ctc_remove_attributes(struct device *dev)
{
device_remove_file(dev, &dev_attr_stats);
device_remove_file(dev, &dev_attr_loglevel);
// device_remove_file(dev, &dev_attr_buffer);
}
static void
ctc_netdev_unregister(struct net_device * dev)
@ -2899,52 +2653,6 @@ ctc_free_netdevice(struct net_device * dev, int free_dev)
#endif
}
/**
* Initialize everything of the net device except the name and the
* channel structs.
*/
static struct net_device *
ctc_init_netdevice(struct net_device * dev, int alloc_device,
struct ctc_priv *privptr)
{
if (!privptr)
return NULL;
DBF_TEXT(setup, 3, __FUNCTION__);
if (alloc_device) {
dev = kmalloc(sizeof (struct net_device), GFP_KERNEL);
if (!dev)
return NULL;
memset(dev, 0, sizeof (struct net_device));
}
dev->priv = privptr;
privptr->fsm = init_fsm("ctcdev", dev_state_names,
dev_event_names, NR_DEV_STATES, NR_DEV_EVENTS,
dev_fsm, DEV_FSM_LEN, GFP_KERNEL);
if (privptr->fsm == NULL) {
if (alloc_device)
kfree(dev);
return NULL;
}
fsm_newstate(privptr->fsm, DEV_STATE_STOPPED);
fsm_settimer(privptr->fsm, &privptr->restart_timer);
if (dev->mtu == 0)
dev->mtu = CTC_BUFSIZE_DEFAULT - LL_HEADER_LENGTH - 2;
dev->hard_start_xmit = ctc_tx;
dev->open = ctc_open;
dev->stop = ctc_close;
dev->get_stats = ctc_stats;
dev->change_mtu = ctc_change_mtu;
dev->hard_header_len = LL_HEADER_LENGTH + 2;
dev->addr_len = 0;
dev->type = ARPHRD_SLIP;
dev->tx_queue_len = 100;
dev->flags = IFF_POINTOPOINT | IFF_NOARP;
SET_MODULE_OWNER(dev);
return dev;
}
static ssize_t
ctc_proto_show(struct device *dev, char *buf)
{
@ -2977,7 +2685,6 @@ ctc_proto_store(struct device *dev, const char *buf, size_t count)
return count;
}
static DEVICE_ATTR(protocol, 0644, ctc_proto_show, ctc_proto_store);
static ssize_t
ctc_type_show(struct device *dev, char *buf)
@ -2991,8 +2698,13 @@ ctc_type_show(struct device *dev, char *buf)
return sprintf(buf, "%s\n", cu3088_type[cgdev->cdev[0]->id.driver_info]);
}
static DEVICE_ATTR(buffer, 0644, buffer_show, buffer_write);
static DEVICE_ATTR(protocol, 0644, ctc_proto_show, ctc_proto_store);
static DEVICE_ATTR(type, 0444, ctc_type_show, NULL);
static DEVICE_ATTR(loglevel, 0644, loglevel_show, loglevel_write);
static DEVICE_ATTR(stats, 0644, stats_show, stats_write);
static struct attribute *ctc_attr[] = {
&dev_attr_protocol.attr,
&dev_attr_type.attr,
@ -3004,6 +2716,21 @@ static struct attribute_group ctc_attr_group = {
.attrs = ctc_attr,
};
static int
ctc_add_attributes(struct device *dev)
{
device_create_file(dev, &dev_attr_loglevel);
device_create_file(dev, &dev_attr_stats);
return 0;
}
static void
ctc_remove_attributes(struct device *dev)
{
device_remove_file(dev, &dev_attr_stats);
device_remove_file(dev, &dev_attr_loglevel);
}
static int
ctc_add_files(struct device *dev)
{
@ -3028,15 +2755,15 @@ ctc_remove_files(struct device *dev)
*
* @returns 0 on success, !0 on failure.
*/
static int
ctc_probe_device(struct ccwgroup_device *cgdev)
{
struct ctc_priv *priv;
int rc;
char buffer[16];
pr_debug("%s() called\n", __FUNCTION__);
DBF_TEXT(trace, 3, __FUNCTION__);
DBF_TEXT(setup, 3, __FUNCTION__);
if (!get_device(&cgdev->dev))
return -ENODEV;
@ -3060,9 +2787,69 @@ ctc_probe_device(struct ccwgroup_device *cgdev)
cgdev->cdev[1]->handler = ctc_irq_handler;
cgdev->dev.driver_data = priv;
sprintf(buffer, "%p", priv);
DBF_TEXT(data, 3, buffer);
sprintf(buffer, "%u", (unsigned int)sizeof(struct ctc_priv));
DBF_TEXT(data, 3, buffer);
sprintf(buffer, "%p", &channels);
DBF_TEXT(data, 3, buffer);
sprintf(buffer, "%u", (unsigned int)sizeof(struct channel));
DBF_TEXT(data, 3, buffer);
return 0;
}
/**
* Initialize everything of the net device except the name and the
* channel structs.
*/
static struct net_device *
ctc_init_netdevice(struct net_device * dev, int alloc_device,
struct ctc_priv *privptr)
{
if (!privptr)
return NULL;
DBF_TEXT(setup, 3, __FUNCTION__);
if (alloc_device) {
dev = kmalloc(sizeof (struct net_device), GFP_KERNEL);
if (!dev)
return NULL;
memset(dev, 0, sizeof (struct net_device));
}
dev->priv = privptr;
privptr->fsm = init_fsm("ctcdev", dev_state_names,
dev_event_names, CTC_NR_DEV_STATES, CTC_NR_DEV_EVENTS,
dev_fsm, DEV_FSM_LEN, GFP_KERNEL);
if (privptr->fsm == NULL) {
if (alloc_device)
kfree(dev);
return NULL;
}
fsm_newstate(privptr->fsm, DEV_STATE_STOPPED);
fsm_settimer(privptr->fsm, &privptr->restart_timer);
if (dev->mtu == 0)
dev->mtu = CTC_BUFSIZE_DEFAULT - LL_HEADER_LENGTH - 2;
dev->hard_start_xmit = ctc_tx;
dev->open = ctc_open;
dev->stop = ctc_close;
dev->get_stats = ctc_stats;
dev->change_mtu = ctc_change_mtu;
dev->hard_header_len = LL_HEADER_LENGTH + 2;
dev->addr_len = 0;
dev->type = ARPHRD_SLIP;
dev->tx_queue_len = 100;
dev->flags = IFF_POINTOPOINT | IFF_NOARP;
SET_MODULE_OWNER(dev);
return dev;
}
/**
*
* Setup an interface.
@ -3081,6 +2868,7 @@ ctc_new_device(struct ccwgroup_device *cgdev)
struct ctc_priv *privptr;
struct net_device *dev;
int ret;
char buffer[16];
pr_debug("%s() called\n", __FUNCTION__);
DBF_TEXT(setup, 3, __FUNCTION__);
@ -3089,6 +2877,9 @@ ctc_new_device(struct ccwgroup_device *cgdev)
if (!privptr)
return -ENODEV;
sprintf(buffer, "%d", privptr->buffer_size);
DBF_TEXT(setup, 3, buffer);
type = get_channel_type(&cgdev->cdev[0]->id);
snprintf(read_id, CTC_ID_SIZE, "ch-%s", cgdev->cdev[0]->dev.bus_id);
@ -3177,9 +2968,10 @@ ctc_shutdown_device(struct ccwgroup_device *cgdev)
struct ctc_priv *priv;
struct net_device *ndev;
DBF_TEXT(trace, 3, __FUNCTION__);
DBF_TEXT(setup, 3, __FUNCTION__);
pr_debug("%s() called\n", __FUNCTION__);
priv = cgdev->dev.driver_data;
ndev = NULL;
if (!priv)
@ -3215,7 +3007,6 @@ ctc_shutdown_device(struct ccwgroup_device *cgdev)
channel_remove(priv->channel[READ]);
if (priv->channel[WRITE])
channel_remove(priv->channel[WRITE]);
priv->channel[READ] = priv->channel[WRITE] = NULL;
return 0;
@ -3228,7 +3019,7 @@ ctc_remove_device(struct ccwgroup_device *cgdev)
struct ctc_priv *priv;
pr_debug("%s() called\n", __FUNCTION__);
DBF_TEXT(trace, 3, __FUNCTION__);
DBF_TEXT(setup, 3, __FUNCTION__);
priv = cgdev->dev.driver_data;
if (!priv)
@ -3265,6 +3056,7 @@ static struct ccwgroup_driver ctc_group_driver = {
static void __exit
ctc_exit(void)
{
DBF_TEXT(setup, 3, __FUNCTION__);
unregister_cu3088_discipline(&ctc_group_driver);
ctc_tty_cleanup();
ctc_unregister_dbf_views();
@ -3282,6 +3074,10 @@ ctc_init(void)
{
int ret = 0;
loglevel = CTC_LOGLEVEL_DEFAULT;
DBF_TEXT(setup, 3, __FUNCTION__);
print_banner();
ret = ctc_register_dbf_views();

276
drivers/s390/net/ctcmain.h Normal file
View File

@ -0,0 +1,276 @@
/*
* $Id: ctcmain.h,v 1.4 2005/03/24 09:04:17 mschwide Exp $
*
* CTC / ESCON network driver
*
* Copyright (C) 2001 IBM Deutschland Entwicklung GmbH, IBM Corporation
* Author(s): Fritz Elfert (elfert@de.ibm.com, felfert@millenux.com)
Peter Tiedemann (ptiedem@de.ibm.com)
*
*
* Documentation used:
* - Principles of Operation (IBM doc#: SA22-7201-06)
* - Common IO/-Device Commands and Self Description (IBM doc#: SA22-7204-02)
* - Common IO/-Device Commands and Self Description (IBM doc#: SN22-5535)
* - ESCON Channel-to-Channel Adapter (IBM doc#: SA22-7203-00)
* - ESCON I/O Interface (IBM doc#: SA22-7202-029
*
* 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.
*
* RELEASE-TAG: CTC/ESCON network driver $Revision: 1.4 $
*
*/
#ifndef _CTCMAIN_H_
#define _CTCMAIN_H_
#include <asm/ccwdev.h>
#include <asm/ccwgroup.h>
#include "ctctty.h"
#include "fsm.h"
#include "cu3088.h"
/**
* CCW commands, used in this driver.
*/
#define CCW_CMD_WRITE 0x01
#define CCW_CMD_READ 0x02
#define CCW_CMD_SET_EXTENDED 0xc3
#define CCW_CMD_PREPARE 0xe3
#define CTC_PROTO_S390 0
#define CTC_PROTO_LINUX 1
#define CTC_PROTO_LINUX_TTY 2
#define CTC_PROTO_OS390 3
#define CTC_PROTO_MAX 3
#define CTC_BUFSIZE_LIMIT 65535
#define CTC_BUFSIZE_DEFAULT 32768
#define CTC_TIMEOUT_5SEC 5000
#define CTC_INITIAL_BLOCKLEN 2
#define READ 0
#define WRITE 1
#define CTC_ID_SIZE BUS_ID_SIZE+3
struct ctc_profile {
unsigned long maxmulti;
unsigned long maxcqueue;
unsigned long doios_single;
unsigned long doios_multi;
unsigned long txlen;
unsigned long tx_time;
struct timespec send_stamp;
};
/**
* Definition of one channel
*/
struct channel {
/**
* Pointer to next channel in list.
*/
struct channel *next;
char id[CTC_ID_SIZE];
struct ccw_device *cdev;
/**
* Type of this channel.
* CTC/A or Escon for valid channels.
*/
enum channel_types type;
/**
* Misc. flags. See CHANNEL_FLAGS_... below
*/
__u32 flags;
/**
* The protocol of this channel
*/
__u16 protocol;
/**
* I/O and irq related stuff
*/
struct ccw1 *ccw;
struct irb *irb;
/**
* RX/TX buffer size
*/
int max_bufsize;
/**
* Transmit/Receive buffer.
*/
struct sk_buff *trans_skb;
/**
* Universal I/O queue.
*/
struct sk_buff_head io_queue;
/**
* TX queue for collecting skb's during busy.
*/
struct sk_buff_head collect_queue;
/**
* Amount of data in collect_queue.
*/
int collect_len;
/**
* spinlock for collect_queue and collect_len
*/
spinlock_t collect_lock;
/**
* Timer for detecting unresposive
* I/O operations.
*/
fsm_timer timer;
/**
* Retry counter for misc. operations.
*/
int retry;
/**
* The finite state machine of this channel
*/
fsm_instance *fsm;
/**
* The corresponding net_device this channel
* belongs to.
*/
struct net_device *netdev;
struct ctc_profile prof;
unsigned char *trans_skb_data;
__u16 logflags;
};
#define CHANNEL_FLAGS_READ 0
#define CHANNEL_FLAGS_WRITE 1
#define CHANNEL_FLAGS_INUSE 2
#define CHANNEL_FLAGS_BUFSIZE_CHANGED 4
#define CHANNEL_FLAGS_FAILED 8
#define CHANNEL_FLAGS_WAITIRQ 16
#define CHANNEL_FLAGS_RWMASK 1
#define CHANNEL_DIRECTION(f) (f & CHANNEL_FLAGS_RWMASK)
#define LOG_FLAG_ILLEGALPKT 1
#define LOG_FLAG_ILLEGALSIZE 2
#define LOG_FLAG_OVERRUN 4
#define LOG_FLAG_NOMEM 8
#define CTC_LOGLEVEL_INFO 1
#define CTC_LOGLEVEL_NOTICE 2
#define CTC_LOGLEVEL_WARN 4
#define CTC_LOGLEVEL_EMERG 8
#define CTC_LOGLEVEL_ERR 16
#define CTC_LOGLEVEL_DEBUG 32
#define CTC_LOGLEVEL_CRIT 64
#define CTC_LOGLEVEL_DEFAULT \
(CTC_LOGLEVEL_INFO | CTC_LOGLEVEL_NOTICE | CTC_LOGLEVEL_WARN | CTC_LOGLEVEL_CRIT)
#define CTC_LOGLEVEL_MAX ((CTC_LOGLEVEL_CRIT<<1)-1)
#define ctc_pr_debug(fmt, arg...) \
do { if (loglevel & CTC_LOGLEVEL_DEBUG) printk(KERN_DEBUG fmt,##arg); } while (0)
#define ctc_pr_info(fmt, arg...) \
do { if (loglevel & CTC_LOGLEVEL_INFO) printk(KERN_INFO fmt,##arg); } while (0)
#define ctc_pr_notice(fmt, arg...) \
do { if (loglevel & CTC_LOGLEVEL_NOTICE) printk(KERN_NOTICE fmt,##arg); } while (0)
#define ctc_pr_warn(fmt, arg...) \
do { if (loglevel & CTC_LOGLEVEL_WARN) printk(KERN_WARNING fmt,##arg); } while (0)
#define ctc_pr_emerg(fmt, arg...) \
do { if (loglevel & CTC_LOGLEVEL_EMERG) printk(KERN_EMERG fmt,##arg); } while (0)
#define ctc_pr_err(fmt, arg...) \
do { if (loglevel & CTC_LOGLEVEL_ERR) printk(KERN_ERR fmt,##arg); } while (0)
#define ctc_pr_crit(fmt, arg...) \
do { if (loglevel & CTC_LOGLEVEL_CRIT) printk(KERN_CRIT fmt,##arg); } while (0)
struct ctc_priv {
struct net_device_stats stats;
unsigned long tbusy;
/**
* The finite state machine of this interface.
*/
fsm_instance *fsm;
/**
* The protocol of this device
*/
__u16 protocol;
/**
* Timer for restarting after I/O Errors
*/
fsm_timer restart_timer;
int buffer_size;
struct channel *channel[2];
};
/**
* Definition of our link level header.
*/
struct ll_header {
__u16 length;
__u16 type;
__u16 unused;
};
#define LL_HEADER_LENGTH (sizeof(struct ll_header))
/**
* Compatibility macros for busy handling
* of network devices.
*/
static __inline__ void
ctc_clear_busy(struct net_device * dev)
{
clear_bit(0, &(((struct ctc_priv *) dev->priv)->tbusy));
if (((struct ctc_priv *)dev->priv)->protocol != CTC_PROTO_LINUX_TTY)
netif_wake_queue(dev);
}
static __inline__ int
ctc_test_and_set_busy(struct net_device * dev)
{
if (((struct ctc_priv *)dev->priv)->protocol != CTC_PROTO_LINUX_TTY)
netif_stop_queue(dev);
return test_and_set_bit(0, &((struct ctc_priv *) dev->priv)->tbusy);
}
#endif

5
drivers/s390/net/ctctty.c
View File

@ -1,5 +1,5 @@
/*
* $Id: ctctty.c,v 1.26 2004/08/04 11:06:55 mschwide Exp $
* $Id: ctctty.c,v 1.29 2005/04/05 08:50:44 mschwide Exp $
*
* CTC / ESCON network driver, tty interface.
*
@ -1056,8 +1056,7 @@ ctc_tty_close(struct tty_struct *tty, struct file *filp)
info->tty = 0;
tty->closing = 0;
if (info->blocked_open) {
set_current_state(TASK_INTERRUPTIBLE);
schedule_timeout(HZ/2);
msleep_interruptible(500);
wake_up_interruptible(&info->open_wait);
}
info->flags &= ~(CTC_ASYNC_NORMAL_ACTIVE | CTC_ASYNC_CLOSING);

4
drivers/s390/net/cu3088.c
View File

@ -1,5 +1,5 @@
/*
* $Id: cu3088.c,v 1.34 2004/06/15 13:16:27 pavlic Exp $
* $Id: cu3088.c,v 1.35 2005/03/30 19:28:52 richtera Exp $
*
* CTC / LCS ccw_device driver
*
@ -39,6 +39,7 @@ const char *cu3088_type[] = {
"FICON channel",
"P390 LCS card",
"OSA LCS card",
"CLAW channel device",
"unknown channel type",
"unsupported channel type",
};
@ -51,6 +52,7 @@ static struct ccw_device_id cu3088_ids[] = {
{ CCW_DEVICE(0x3088, 0x1e), .driver_info = channel_type_ficon },
{ CCW_DEVICE(0x3088, 0x01), .driver_info = channel_type_p390 },
{ CCW_DEVICE(0x3088, 0x60), .driver_info = channel_type_osa2 },
{ CCW_DEVICE(0x3088, 0x61), .driver_info = channel_type_claw },
{ /* end of list */ }
};

3
drivers/s390/net/cu3088.h
View File

@ -23,6 +23,9 @@ enum channel_types {
/* Device is a OSA2 card */
channel_type_osa2,
/* Device is a CLAW channel device */
channel_type_claw,
/* Device is a channel, but we don't know
* anything about it */
channel_type_unknown,

10
drivers/s390/net/iucv.c
View File

@ -1,5 +1,5 @@
/*
* $Id: iucv.c,v 1.43 2005/02/09 14:47:43 braunu Exp $
* $Id: iucv.c,v 1.45 2005/04/26 22:59:06 braunu Exp $
*
* IUCV network driver
*
@ -29,7 +29,7 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* RELEASE-TAG: IUCV lowlevel driver $Revision: 1.43 $
* RELEASE-TAG: IUCV lowlevel driver $Revision: 1.45 $
*
*/
@ -355,7 +355,7 @@ do { \
static void
iucv_banner(void)
{
char vbuf[] = "$Revision: 1.43 $";
char vbuf[] = "$Revision: 1.45 $";
char *version = vbuf;
if ((version = strchr(version, ':'))) {
@ -2553,12 +2553,12 @@ EXPORT_SYMBOL (iucv_resume);
#endif
EXPORT_SYMBOL (iucv_reply_prmmsg);
EXPORT_SYMBOL (iucv_send);
#if 0
EXPORT_SYMBOL (iucv_send2way);
EXPORT_SYMBOL (iucv_send2way_array);
EXPORT_SYMBOL (iucv_send_array);
EXPORT_SYMBOL (iucv_send2way_prmmsg);
EXPORT_SYMBOL (iucv_send2way_prmmsg_array);
#if 0
EXPORT_SYMBOL (iucv_send_array);
EXPORT_SYMBOL (iucv_send_prmmsg);
EXPORT_SYMBOL (iucv_setmask);
#endif

33
drivers/s390/net/lcs.c
View File

@ -11,7 +11,7 @@
* Frank Pavlic (pavlic@de.ibm.com) and
* Martin Schwidefsky <schwidefsky@de.ibm.com>
*
* $Revision: 1.96 $ $Date: 2004/11/11 13:42:33 $
* $Revision: 1.98 $ $Date: 2005/04/18 13:41:29 $
*
* 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
@ -59,7 +59,7 @@
/**
* initialization string for output
*/
#define VERSION_LCS_C "$Revision: 1.96 $"
#define VERSION_LCS_C "$Revision: 1.98 $"
static char version[] __initdata = "LCS driver ("VERSION_LCS_C "/" VERSION_LCS_H ")";
static char debug_buffer[255];
@ -1098,14 +1098,6 @@ lcs_check_multicast_support(struct lcs_card *card)
PRINT_ERR("Query IPAssist failed. Assuming unsupported!\n");
return -EOPNOTSUPP;
}
/* Print out supported assists: IPv6 */
PRINT_INFO("LCS device %s %s IPv6 support\n", card->dev->name,
(card->ip_assists_supported & LCS_IPASS_IPV6_SUPPORT) ?
"with" : "without");
/* Print out supported assist: Multicast */
PRINT_INFO("LCS device %s %s Multicast support\n", card->dev->name,
(card->ip_assists_supported & LCS_IPASS_MULTICAST_SUPPORT) ?
"with" : "without");
if (card->ip_assists_supported & LCS_IPASS_MULTICAST_SUPPORT)
return 0;
return -EOPNOTSUPP;
@ -1160,7 +1152,7 @@ list_modified:
}
}
/* re-insert all entries from the failed_list into ipm_list */
list_for_each_entry(ipm, &failed_list, list) {
list_for_each_entry_safe(ipm, tmp, &failed_list, list) {
list_del_init(&ipm->list);
list_add_tail(&ipm->list, &card->ipm_list);
}
@ -2198,30 +2190,39 @@ lcs_new_device(struct ccwgroup_device *ccwgdev)
if (!dev)
goto out;
card->dev = dev;
netdev_out:
card->dev->priv = card;
card->dev->open = lcs_open_device;
card->dev->stop = lcs_stop_device;
card->dev->hard_start_xmit = lcs_start_xmit;
card->dev->get_stats = lcs_getstats;
SET_MODULE_OWNER(dev);
if (lcs_register_netdev(ccwgdev) != 0)
goto out;
memcpy(card->dev->dev_addr, card->mac, LCS_MAC_LENGTH);
#ifdef CONFIG_IP_MULTICAST
if (!lcs_check_multicast_support(card))
card->dev->set_multicast_list = lcs_set_multicast_list;
#endif
netif_stop_queue(card->dev);
netdev_out:
lcs_set_allowed_threads(card,0xffffffff);
if (recover_state == DEV_STATE_RECOVER) {
lcs_set_multicast_list(card->dev);
card->dev->flags |= IFF_UP;
netif_wake_queue(card->dev);
card->state = DEV_STATE_UP;
} else
} else {
lcs_stopcard(card);
}
if (lcs_register_netdev(ccwgdev) != 0)
goto out;
/* Print out supported assists: IPv6 */
PRINT_INFO("LCS device %s %s IPv6 support\n", card->dev->name,
(card->ip_assists_supported & LCS_IPASS_IPV6_SUPPORT) ?
"with" : "without");
/* Print out supported assist: Multicast */
PRINT_INFO("LCS device %s %s Multicast support\n", card->dev->name,
(card->ip_assists_supported & LCS_IPASS_MULTICAST_SUPPORT) ?
"with" : "without");
return 0;
out:

35
drivers/s390/net/qeth.h
View File

@ -24,7 +24,7 @@
#include "qeth_mpc.h"
#define VERSION_QETH_H "$Revision: 1.135 $"
#define VERSION_QETH_H "$Revision: 1.139 $"
#ifdef CONFIG_QETH_IPV6
#define QETH_VERSION_IPV6 ":IPv6"
@ -288,7 +288,8 @@ qeth_is_ipa_enabled(struct qeth_ipa_info *ipa, enum qeth_ipa_funcs func)
#define QETH_TX_TIMEOUT 100 * HZ
#define QETH_HEADER_SIZE 32
#define MAX_PORTNO 15
#define QETH_FAKE_LL_LEN ETH_HLEN
#define QETH_FAKE_LL_LEN_ETH ETH_HLEN
#define QETH_FAKE_LL_LEN_TR (sizeof(struct trh_hdr)-TR_MAXRIFLEN+sizeof(struct trllc))
#define QETH_FAKE_LL_V6_ADDR_POS 24
/*IPv6 address autoconfiguration stuff*/
@ -369,6 +370,25 @@ struct qeth_hdr {
} hdr;
} __attribute__ ((packed));
/*TCP Segmentation Offload header*/
struct qeth_hdr_ext_tso {
__u16 hdr_tot_len;
__u8 imb_hdr_no;
__u8 reserved;
__u8 hdr_type;
__u8 hdr_version;
__u16 hdr_len;
__u32 payload_len;
__u16 mss;
__u16 dg_hdr_len;
__u8 padding[16];
} __attribute__ ((packed));
struct qeth_hdr_tso {
struct qeth_hdr hdr; /*hdr->hdr.l3.xxx*/
struct qeth_hdr_ext_tso ext;
} __attribute__ ((packed));
/* flags for qeth_hdr.flags */
#define QETH_HDR_PASSTHRU 0x10
@ -866,6 +886,7 @@ qeth_push_skb(struct qeth_card *card, struct sk_buff **skb, int size)
return hdr;
}
inline static int
qeth_get_hlen(__u8 link_type)
{
@ -873,19 +894,19 @@ qeth_get_hlen(__u8 link_type)
switch (link_type) {
case QETH_LINK_TYPE_HSTR:
case QETH_LINK_TYPE_LANE_TR:
return sizeof(struct qeth_hdr) + TR_HLEN;
return sizeof(struct qeth_hdr_tso) + TR_HLEN;
default:
#ifdef CONFIG_QETH_VLAN
return sizeof(struct qeth_hdr) + VLAN_ETH_HLEN;
return sizeof(struct qeth_hdr_tso) + VLAN_ETH_HLEN;
#else
return sizeof(struct qeth_hdr) + ETH_HLEN;
return sizeof(struct qeth_hdr_tso) + ETH_HLEN;
#endif
}
#else /* CONFIG_QETH_IPV6 */
#ifdef CONFIG_QETH_VLAN
return sizeof(struct qeth_hdr) + VLAN_HLEN;
return sizeof(struct qeth_hdr_tso) + VLAN_HLEN;
#else
return sizeof(struct qeth_hdr);
return sizeof(struct qeth_hdr_tso);
#endif
#endif /* CONFIG_QETH_IPV6 */
}

51
drivers/s390/net/qeth_eddp.c
View File

@ -1,6 +1,6 @@
/*
*
* linux/drivers/s390/net/qeth_eddp.c ($Revision: 1.11 $)
* linux/drivers/s390/net/qeth_eddp.c ($Revision: 1.13 $)
*
* Enhanced Device Driver Packing (EDDP) support for the qeth driver.
*
@ -8,7 +8,7 @@
*
* Author(s): Thomas Spatzier <tspat@de.ibm.com>
*
* $Revision: 1.11 $ $Date: 2005/03/24 09:04:18 $
* $Revision: 1.13 $ $Date: 2005/05/04 20:19:18 $
*
*/
#include <linux/config.h>
@ -85,7 +85,7 @@ void
qeth_eddp_buf_release_contexts(struct qeth_qdio_out_buffer *buf)
{
struct qeth_eddp_context_reference *ref;
QETH_DBF_TEXT(trace, 6, "eddprctx");
while (!list_empty(&buf->ctx_list)){
ref = list_entry(buf->ctx_list.next,
@ -139,7 +139,7 @@ qeth_eddp_fill_buffer(struct qeth_qdio_out_q *queue,
"buffer!\n");
goto out;
}
}
}
/* check if the whole next skb fits into current buffer */
if ((QETH_MAX_BUFFER_ELEMENTS(queue->card) -
buf->next_element_to_fill)
@ -152,7 +152,7 @@ qeth_eddp_fill_buffer(struct qeth_qdio_out_q *queue,
* and increment ctx's refcnt */
must_refcnt = 1;
continue;
}
}
if (must_refcnt){
must_refcnt = 0;
if (qeth_eddp_buf_ref_context(buf, ctx)){
@ -202,40 +202,29 @@ out:
return flush_cnt;
}
static inline int
qeth_get_skb_data_len(struct sk_buff *skb)
{
int len = skb->len;
int i;
for (i = 0; i < skb_shinfo(skb)->nr_frags; ++i)
len -= skb_shinfo(skb)->frags[i].size;
return len;
}
static inline void
qeth_eddp_create_segment_hdrs(struct qeth_eddp_context *ctx,
struct qeth_eddp_data *eddp)
struct qeth_eddp_data *eddp, int data_len)
{
u8 *page;
int page_remainder;
int page_offset;
int hdr_len;
int pkt_len;
struct qeth_eddp_element *element;
QETH_DBF_TEXT(trace, 5, "eddpcrsh");
page = ctx->pages[ctx->offset >> PAGE_SHIFT];
page_offset = ctx->offset % PAGE_SIZE;
element = &ctx->elements[ctx->num_elements];
hdr_len = eddp->nhl + eddp->thl;
pkt_len = eddp->nhl + eddp->thl + data_len;
/* FIXME: layer2 and VLAN !!! */
if (eddp->qh.hdr.l2.id == QETH_HEADER_TYPE_LAYER2)
hdr_len += ETH_HLEN;
pkt_len += ETH_HLEN;
if (eddp->mac.h_proto == __constant_htons(ETH_P_8021Q))
hdr_len += VLAN_HLEN;
/* does complete header fit in current page ? */
pkt_len += VLAN_HLEN;
/* does complete packet fit in current page ? */
page_remainder = PAGE_SIZE - page_offset;
if (page_remainder < (sizeof(struct qeth_hdr) + hdr_len)){
if (page_remainder < (sizeof(struct qeth_hdr) + pkt_len)){
/* no -> go to start of next page */
ctx->offset += page_remainder;
page = ctx->pages[ctx->offset >> PAGE_SHIFT];
@ -281,7 +270,7 @@ qeth_eddp_copy_data_tcp(char *dst, struct qeth_eddp_data *eddp, int len,
int left_in_frag;
int copy_len;
u8 *src;
QETH_DBF_TEXT(trace, 5, "eddpcdtc");
if (skb_shinfo(eddp->skb)->nr_frags == 0) {
memcpy(dst, eddp->skb->data + eddp->skb_offset, len);
@ -292,7 +281,7 @@ qeth_eddp_copy_data_tcp(char *dst, struct qeth_eddp_data *eddp, int len,
while (len > 0) {
if (eddp->frag < 0) {
/* we're in skb->data */
left_in_frag = qeth_get_skb_data_len(eddp->skb)
left_in_frag = (eddp->skb->len - eddp->skb->data_len)
- eddp->skb_offset;
src = eddp->skb->data + eddp->skb_offset;
} else {
@ -424,7 +413,7 @@ __qeth_eddp_fill_context_tcp(struct qeth_eddp_context *ctx,
struct tcphdr *tcph;
int data_len;
u32 hcsum;
QETH_DBF_TEXT(trace, 5, "eddpftcp");
eddp->skb_offset = sizeof(struct qeth_hdr) + eddp->nhl + eddp->thl;
tcph = eddp->skb->h.th;
@ -464,7 +453,7 @@ __qeth_eddp_fill_context_tcp(struct qeth_eddp_context *ctx,
else
hcsum = qeth_eddp_check_tcp6_hdr(eddp, data_len);
/* fill the next segment into the context */
qeth_eddp_create_segment_hdrs(ctx, eddp);
qeth_eddp_create_segment_hdrs(ctx, eddp, data_len);
qeth_eddp_create_segment_data_tcp(ctx, eddp, data_len, hcsum);
if (eddp->skb_offset >= eddp->skb->len)
break;
@ -474,13 +463,13 @@ __qeth_eddp_fill_context_tcp(struct qeth_eddp_context *ctx,
eddp->th.tcp.h.seq += data_len;
}
}
static inline int
qeth_eddp_fill_context_tcp(struct qeth_eddp_context *ctx,
struct sk_buff *skb, struct qeth_hdr *qhdr)
{
struct qeth_eddp_data *eddp = NULL;
QETH_DBF_TEXT(trace, 5, "eddpficx");
/* create our segmentation headers and copy original headers */
if (skb->protocol == ETH_P_IP)
@ -520,7 +509,7 @@ qeth_eddp_calc_num_pages(struct qeth_eddp_context *ctx, struct sk_buff *skb,
int hdr_len)
{
int skbs_per_page;
QETH_DBF_TEXT(trace, 5, "eddpcanp");
/* can we put multiple skbs in one page? */
skbs_per_page = PAGE_SIZE / (skb_shinfo(skb)->tso_size + hdr_len);
@ -600,7 +589,7 @@ qeth_eddp_create_context_tcp(struct qeth_card *card, struct sk_buff *skb,
struct qeth_hdr *qhdr)
{
struct qeth_eddp_context *ctx = NULL;
QETH_DBF_TEXT(trace, 5, "creddpct");
if (skb->protocol == ETH_P_IP)
ctx = qeth_eddp_create_context_generic(card, skb,

316
drivers/s390/net/qeth_main.c
View File

@ -1,6 +1,6 @@
/*
*
* linux/drivers/s390/net/qeth_main.c ($Revision: 1.206 $)
* linux/drivers/s390/net/qeth_main.c ($Revision: 1.214 $)
*
* Linux on zSeries OSA Express and HiperSockets support
*
@ -12,7 +12,7 @@
* Frank Pavlic (pavlic@de.ibm.com) and
* Thomas Spatzier <tspat@de.ibm.com>
*
* $Revision: 1.206 $ $Date: 2005/03/24 09:04:18 $
* $Revision: 1.214 $ $Date: 2005/05/04 20:19:18 $
*
* 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
@ -80,7 +80,7 @@ qeth_eyecatcher(void)
#include "qeth_eddp.h"
#include "qeth_tso.h"
#define VERSION_QETH_C "$Revision: 1.206 $"
#define VERSION_QETH_C "$Revision: 1.214 $"
static const char *version = "qeth S/390 OSA-Express driver";
/**
@ -158,6 +158,9 @@ 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);
@ -510,10 +513,10 @@ qeth_irq_tasklet(unsigned long data)
wake_up(&card->wait_q);
}
static int qeth_stop_card(struct qeth_card *);
static int qeth_stop_card(struct qeth_card *, int);
static int
qeth_set_offline(struct ccwgroup_device *cgdev)
__qeth_set_offline(struct ccwgroup_device *cgdev, int recovery_mode)
{
struct qeth_card *card = (struct qeth_card *) cgdev->dev.driver_data;
int rc = 0;
@ -523,7 +526,7 @@ qeth_set_offline(struct ccwgroup_device *cgdev)
QETH_DBF_HEX(setup, 3, &card, sizeof(void *));
recover_flag = card->state;
if (qeth_stop_card(card) == -ERESTARTSYS){
if (qeth_stop_card(card, recovery_mode) == -ERESTARTSYS){
PRINT_WARN("Stopping card %s interrupted by user!\n",
CARD_BUS_ID(card));
return -ERESTARTSYS;
@ -539,6 +542,12 @@ qeth_set_offline(struct ccwgroup_device *cgdev)
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);
@ -953,8 +962,8 @@ qeth_recover(void *ptr)
PRINT_WARN("Recovery of device %s started ...\n",
CARD_BUS_ID(card));
card->use_hard_stop = 1;
qeth_set_offline(card->gdev);
rc = qeth_set_online(card->gdev);
__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));
@ -2152,9 +2161,15 @@ qeth_get_next_skb(struct qeth_card *card, struct qdio_buffer *buffer,
if (!skb_len)
return NULL;
if (card->options.fake_ll){
if (!(skb = qeth_get_skb(skb_len + QETH_FAKE_LL_LEN)))
goto no_mem;
skb_pull(skb, QETH_FAKE_LL_LEN);
if(card->dev->type == ARPHRD_IEEE802_TR){
if (!(skb = qeth_get_skb(skb_len+QETH_FAKE_LL_LEN_TR)))
goto no_mem;
skb_reserve(skb,QETH_FAKE_LL_LEN_TR);
} else {
if (!(skb = qeth_get_skb(skb_len+QETH_FAKE_LL_LEN_ETH)))
goto no_mem;
skb_reserve(skb,QETH_FAKE_LL_LEN_ETH);
}
} else if (!(skb = qeth_get_skb(skb_len)))
goto no_mem;
data_ptr = element->addr + offset;
@ -2229,14 +2244,68 @@ qeth_type_trans(struct sk_buff *skb, struct net_device *dev)
}
static inline void
qeth_rebuild_skb_fake_ll(struct qeth_card *card, struct sk_buff *skb,
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,"skbfake");
skb->mac.raw = skb->data - QETH_FAKE_LL_LEN;
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;
@ -2253,10 +2322,7 @@ qeth_rebuild_skb_fake_ll(struct qeth_card *card, struct sk_buff *skb,
#endif /* CONFIG_QETH_IPV6 */
case __constant_htons(ETH_P_IP):
ip_hdr = (struct iphdr *)skb->data;
if (card->dev->type == ARPHRD_IEEE802_TR)
ip_tr_mc_map(ip_hdr->daddr, fake_hdr->h_dest);
else
ip_eth_mc_map(ip_hdr->daddr, fake_hdr->h_dest);
ip_eth_mc_map(ip_hdr->daddr, fake_hdr->h_dest);
break;
default:
memcpy(fake_hdr->h_dest, card->dev->dev_addr, ETH_ALEN);
@ -2277,6 +2343,16 @@ qeth_rebuild_skb_fake_ll(struct qeth_card *card, struct sk_buff *skb,
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_rebuild_skb_vlan(struct qeth_card *card, struct sk_buff *skb,
struct qeth_hdr *hdr)
@ -3440,16 +3516,25 @@ qeth_fake_header(struct sk_buff *skb, struct net_device *dev,
unsigned short type, void *daddr, void *saddr,
unsigned len)
{
struct ethhdr *hdr;
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;
hdr = (struct ethhdr *)skb_push(skb, QETH_FAKE_LL_LEN);
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;
} 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
@ -3710,16 +3795,12 @@ static inline int
qeth_prepare_skb(struct qeth_card *card, struct sk_buff **skb,
struct qeth_hdr **hdr, int ipv)
{
int rc = 0;
#ifdef CONFIG_QETH_VLAN
u16 *tag;
#endif
QETH_DBF_TEXT(trace, 6, "prepskb");
rc = qeth_realloc_headroom(card, skb, sizeof(struct qeth_hdr));
if (rc)
return rc;
#ifdef CONFIG_QETH_VLAN
if (card->vlangrp && vlan_tx_tag_present(*skb) &&
((ipv == 6) || card->options.layer2) ) {
@ -3882,9 +3963,15 @@ qeth_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
memcpy(hdr->hdr.l3.dest_addr, &skb->nh.ipv6h->daddr, 16);
}
} else { /* passthrough */
if (!memcmp(skb->data + sizeof(struct qeth_hdr),
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;
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 :
@ -3893,68 +3980,30 @@ qeth_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
}
}
static inline void
__qeth_fill_buffer_frag(struct sk_buff *skb, struct qdio_buffer *buffer,
int *next_element_to_fill)
{
int length = skb->len;
struct skb_frag_struct *frag;
int fragno;
unsigned long addr;
int element;
int first_lap = 1;
fragno = skb_shinfo(skb)->nr_frags; /* start with last frag */
element = *next_element_to_fill + fragno;
while (length > 0) {
if (fragno > 0) {
frag = &skb_shinfo(skb)->frags[fragno - 1];
addr = (page_to_pfn(frag->page) << PAGE_SHIFT) +
frag->page_offset;
buffer->element[element].addr = (char *)addr;
buffer->element[element].length = frag->size;
length -= frag->size;
if (first_lap)
buffer->element[element].flags =
SBAL_FLAGS_LAST_FRAG;
else
buffer->element[element].flags =
SBAL_FLAGS_MIDDLE_FRAG;
} else {
buffer->element[element].addr = skb->data;
buffer->element[element].length = length;
length = 0;
buffer->element[element].flags =
SBAL_FLAGS_FIRST_FRAG;
}
element--;
fragno--;
first_lap = 0;
}
*next_element_to_fill += skb_shinfo(skb)->nr_frags + 1;
}
static inline void
__qeth_fill_buffer(struct sk_buff *skb, struct qdio_buffer *buffer,
int *next_element_to_fill)
int is_tso, int *next_element_to_fill)
{
int length = skb->len;
int length_here;
int element;
char *data;
int first_lap = 1;
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 (!length) {
if (first_lap)
buffer->element[element].flags = 0;
else
@ -3981,17 +4030,35 @@ qeth_fill_buffer(struct qeth_qdio_out_q *queue,
struct sk_buff *skb)
{
struct qdio_buffer *buffer;
int flush_cnt = 0;
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,
__qeth_fill_buffer(skb, buffer, large_send,
(int *)&buf->next_element_to_fill);
else
__qeth_fill_buffer_frag(skb, buffer,
__qeth_fill_buffer_frag(skb, buffer, large_send,
(int *)&buf->next_element_to_fill);
if (!queue->do_pack) {
@ -4183,6 +4250,25 @@ out:
return rc;
}
static inline int
qeth_get_elements_no(struct qeth_card *card, void *hdr, struct sk_buff *skb)
{
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 > QETH_MAX_BUFFER_ELEMENTS(card)){
PRINT_ERR("qeth_do_send_packet: invalid size of "
"IP packet. Discarded.");
return 0;
}
return elements_needed;
}
static inline int
qeth_send_packet(struct qeth_card *card, struct sk_buff *skb)
{
@ -4205,7 +4291,11 @@ qeth_send_packet(struct qeth_card *card, struct sk_buff *skb)
dev_kfree_skb_irq(skb);
return 0;
}
skb_pull(skb, QETH_FAKE_LL_LEN);
if(card->dev->type == ARPHRD_IEEE802_TR){
skb_pull(skb, QETH_FAKE_LL_LEN_TR);
} else {
skb_pull(skb, QETH_FAKE_LL_LEN_ETH);
}
}
}
cast_type = qeth_get_cast_type(card, skb);
@ -4221,19 +4311,25 @@ qeth_send_packet(struct qeth_card *card, struct sk_buff *skb)
if (skb_shinfo(skb)->tso_size)
large_send = card->options.large_send;
if ((rc = qeth_prepare_skb(card, &skb, &hdr, ipv))){
QETH_DBF_TEXT_(trace, 4, "pskbe%d", rc);
return rc;
}
/*are we able to do TSO ? If so ,prepare and send it from here */
if ((large_send == QETH_LARGE_SEND_TSO) &&
(cast_type == RTN_UNSPEC)) {
rc = qeth_tso_send_packet(card, skb, queue,
ipv, cast_type);
goto do_statistics;
rc = qeth_tso_prepare_packet(card, skb, ipv, cast_type);
if (rc) {
card->stats.tx_dropped++;
card->stats.tx_errors++;
dev_kfree_skb_any(skb);
return NETDEV_TX_OK;
}
elements_needed++;
} else {
if ((rc = qeth_prepare_skb(card, &skb, &hdr, ipv))) {
QETH_DBF_TEXT_(trace, 4, "pskbe%d", rc);
return rc;
}
qeth_fill_header(card, hdr, skb, ipv, cast_type);
}
qeth_fill_header(card, hdr, skb, ipv, cast_type);
if (large_send == QETH_LARGE_SEND_EDDP) {
ctx = qeth_eddp_create_context(card, skb, hdr);
if (ctx == NULL) {
@ -4241,7 +4337,7 @@ qeth_send_packet(struct qeth_card *card, struct sk_buff *skb)
return -EINVAL;
}
} else {
elements_needed = qeth_get_elements_no(card,(void*) hdr, skb);
elements_needed += qeth_get_elements_no(card,(void*) hdr, skb);
if (!elements_needed)
return -EINVAL;
}
@ -4252,12 +4348,12 @@ qeth_send_packet(struct qeth_card *card, struct sk_buff *skb)
else
rc = qeth_do_send_packet_fast(card, queue, skb, hdr,
elements_needed, ctx);
do_statistics:
if (!rc){
card->stats.tx_packets++;
card->stats.tx_bytes += skb->len;
#ifdef CONFIG_QETH_PERF_STATS
if (skb_shinfo(skb)->tso_size) {
if (skb_shinfo(skb)->tso_size &&
!(large_send == QETH_LARGE_SEND_NO)) {
card->perf_stats.large_send_bytes += skb->len;
card->perf_stats.large_send_cnt++;
}
@ -7154,7 +7250,7 @@ qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
}
static int
qeth_stop_card(struct qeth_card *card)
qeth_stop_card(struct qeth_card *card, int recovery_mode)
{
int rc = 0;
@ -7167,9 +7263,13 @@ qeth_stop_card(struct qeth_card *card)
if (card->read.state == CH_STATE_UP &&
card->write.state == CH_STATE_UP &&
(card->state == CARD_STATE_UP)) {
rtnl_lock();
dev_close(card->dev);
rtnl_unlock();
if(recovery_mode) {
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);
@ -7341,13 +7441,17 @@ qeth_register_netdev(struct qeth_card *card)
}
static void
qeth_start_again(struct qeth_card *card)
qeth_start_again(struct qeth_card *card, int recovery_mode)
{
QETH_DBF_TEXT(setup ,2, "startag");
rtnl_lock();
dev_open(card->dev);
rtnl_unlock();
if(recovery_mode) {
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);
}
@ -7404,7 +7508,7 @@ static void qeth_make_parameters_consistent(struct qeth_card *card)
static int
qeth_set_online(struct ccwgroup_device *gdev)
__qeth_set_online(struct ccwgroup_device *gdev, int recovery_mode)
{
struct qeth_card *card = gdev->dev.driver_data;
int rc = 0;
@ -7464,12 +7568,12 @@ qeth_set_online(struct ccwgroup_device *gdev)
* we can also use this state for recovery purposes*/
qeth_set_allowed_threads(card, 0xffffffff, 0);
if (recover_flag == CARD_STATE_RECOVER)
qeth_start_again(card);
qeth_start_again(card, recovery_mode);
qeth_notify_processes();
return 0;
out_remove:
card->use_hard_stop = 1;
qeth_stop_card(card);
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));
@ -7480,6 +7584,12 @@ out_remove:
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},

285
drivers/s390/net/qeth_tso.c
View File

@ -1,285 +0,0 @@
/*
* linux/drivers/s390/net/qeth_tso.c ($Revision: 1.6 $)
*
* Header file for qeth TCP Segmentation Offload support.
*
* Copyright 2004 IBM Corporation
*
* Author(s): Frank Pavlic <pavlic@de.ibm.com>
*
* $Revision: 1.6 $ $Date: 2005/03/24 09:04:18 $
*
*/
#include <linux/skbuff.h>
#include <linux/tcp.h>
#include <linux/ip.h>
#include <linux/ipv6.h>
#include <net/ip6_checksum.h>
#include "qeth.h"
#include "qeth_mpc.h"
#include "qeth_tso.h"
/**
* skb already partially prepared
* classic qdio header in skb->data
* */
static inline struct qeth_hdr_tso *
qeth_tso_prepare_skb(struct qeth_card *card, struct sk_buff **skb)
{
int rc = 0;
QETH_DBF_TEXT(trace, 5, "tsoprsk");
rc = qeth_realloc_headroom(card, skb,sizeof(struct qeth_hdr_ext_tso));
if (rc)
return NULL;
return qeth_push_skb(card, skb, sizeof(struct qeth_hdr_ext_tso));
}
/**
* fill header for a TSO packet
*/
static inline void
qeth_tso_fill_header(struct qeth_card *card, struct sk_buff *skb)
{
struct qeth_hdr_tso *hdr;
struct tcphdr *tcph;
struct iphdr *iph;
QETH_DBF_TEXT(trace, 5, "tsofhdr");
hdr = (struct qeth_hdr_tso *) skb->data;
iph = skb->nh.iph;
tcph = skb->h.th;
/*fix header to TSO values ...*/
hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
/*set values which are fix for the first approach ...*/
hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
hdr->ext.imb_hdr_no = 1;
hdr->ext.hdr_type = 1;
hdr->ext.hdr_version = 1;
hdr->ext.hdr_len = 28;
/*insert non-fix values */
hdr->ext.mss = skb_shinfo(skb)->tso_size;
hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4);
hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
sizeof(struct qeth_hdr_tso));
}
/**
* change some header values as requested by hardware
*/
static inline void
qeth_tso_set_tcpip_header(struct qeth_card *card, struct sk_buff *skb)
{
struct iphdr *iph;
struct ipv6hdr *ip6h;
struct tcphdr *tcph;
iph = skb->nh.iph;
ip6h = skb->nh.ipv6h;
tcph = skb->h.th;
tcph->check = 0;
if (skb->protocol == ETH_P_IPV6) {
ip6h->payload_len = 0;
tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
0, IPPROTO_TCP, 0);
return;
}
/*OSA want us to set these values ...*/
tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
0, IPPROTO_TCP, 0);
iph->tot_len = 0;
iph->check = 0;
}
static inline struct qeth_hdr_tso *
qeth_tso_prepare_packet(struct qeth_card *card, struct sk_buff *skb,
int ipv, int cast_type)
{
struct qeth_hdr_tso *hdr;
int rc = 0;
QETH_DBF_TEXT(trace, 5, "tsoprep");
/*get headroom for tso qdio header */
hdr = (struct qeth_hdr_tso *) qeth_tso_prepare_skb(card, &skb);
if (hdr == NULL) {
QETH_DBF_TEXT_(trace, 4, "2err%d", rc);
return NULL;
}
memset(hdr, 0, sizeof(struct qeth_hdr_tso));
/*fill first 32 bytes of qdio header as used
*FIXME: TSO has two struct members
* with different names but same size
* */
qeth_fill_header(card, &hdr->hdr, skb, ipv, cast_type);
qeth_tso_fill_header(card, skb);
qeth_tso_set_tcpip_header(card, skb);
return hdr;
}
static inline int
qeth_tso_get_queue_buffer(struct qeth_qdio_out_q *queue)
{
struct qeth_qdio_out_buffer *buffer;
int flush_cnt = 0;
QETH_DBF_TEXT(trace, 5, "tsobuf");
/* force to non-packing*/
if (queue->do_pack)
queue->do_pack = 0;
buffer = &queue->bufs[queue->next_buf_to_fill];
/* get a new buffer if current is already in use*/
if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
(buffer->next_element_to_fill > 0)) {
atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
QDIO_MAX_BUFFERS_PER_Q;
flush_cnt++;
}
return flush_cnt;
}
static inline void
__qeth_tso_fill_buffer_frag(struct qeth_qdio_out_buffer *buf,
struct sk_buff *skb)
{
struct skb_frag_struct *frag;
struct qdio_buffer *buffer;
int fragno, cnt, element;
unsigned long addr;
QETH_DBF_TEXT(trace, 6, "tsfilfrg");
/*initialize variables ...*/
fragno = skb_shinfo(skb)->nr_frags;
buffer = buf->buffer;
element = buf->next_element_to_fill;
/*fill buffer elements .....*/
for (cnt = 0; cnt < fragno; cnt++) {
frag = &skb_shinfo(skb)->frags[cnt];
addr = (page_to_pfn(frag->page) << PAGE_SHIFT) +
frag->page_offset;
buffer->element[element].addr = (char *)addr;
buffer->element[element].length = frag->size;
if (cnt < (fragno - 1))
buffer->element[element].flags =
SBAL_FLAGS_MIDDLE_FRAG;
else
buffer->element[element].flags =
SBAL_FLAGS_LAST_FRAG;
element++;
}
buf->next_element_to_fill = element;
}
static inline int
qeth_tso_fill_buffer(struct qeth_qdio_out_buffer *buf,
struct sk_buff *skb)
{
int length, length_here, element;
int hdr_len;
struct qdio_buffer *buffer;
struct qeth_hdr_tso *hdr;
char *data;
QETH_DBF_TEXT(trace, 3, "tsfilbuf");
/*increment user count and queue skb ...*/
atomic_inc(&skb->users);
skb_queue_tail(&buf->skb_list, skb);
/*initialize all variables...*/
buffer = buf->buffer;
hdr = (struct qeth_hdr_tso *)skb->data;
hdr_len = sizeof(struct qeth_hdr_tso) + hdr->ext.dg_hdr_len;
data = skb->data + hdr_len;
length = skb->len - hdr_len;
element = buf->next_element_to_fill;
/*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++;
if (skb_shinfo(skb)->nr_frags > 0) {
__qeth_tso_fill_buffer_frag(buf, skb);
goto out;
}
/*start filling buffer entries ...*/
element++;
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)
buffer->element[element].flags =
SBAL_FLAGS_LAST_FRAG;
else
buffer->element[element].flags =
SBAL_FLAGS_MIDDLE_FRAG;
data += length_here;
element++;
}
/*set the buffer to primed ...*/
buf->next_element_to_fill = element;
out:
atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
return 1;
}
int
qeth_tso_send_packet(struct qeth_card *card, struct sk_buff *skb,
struct qeth_qdio_out_q *queue, int ipv, int cast_type)
{
int flush_cnt = 0;
struct qeth_hdr_tso *hdr;
struct qeth_qdio_out_buffer *buffer;
int start_index;
QETH_DBF_TEXT(trace, 3, "tsosend");
if (!(hdr = qeth_tso_prepare_packet(card, skb, ipv, cast_type)))
return -ENOMEM;
/*check if skb fits in one SBAL ...*/
if (!(qeth_get_elements_no(card, (void*)hdr, skb)))
return -EINVAL;
/*lock queue, force switching to non-packing and send it ...*/
while (atomic_compare_and_swap(QETH_OUT_Q_UNLOCKED,
QETH_OUT_Q_LOCKED,
&queue->state));
start_index = queue->next_buf_to_fill;
buffer = &queue->bufs[queue->next_buf_to_fill];
/*check if card is too busy ...*/
if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY){
card->stats.tx_dropped++;
goto out;
}
/*let's force to non-packing and get a new SBAL*/
flush_cnt += qeth_tso_get_queue_buffer(queue);
buffer = &queue->bufs[queue->next_buf_to_fill];
if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
card->stats.tx_dropped++;
goto out;
}
flush_cnt += qeth_tso_fill_buffer(buffer, skb);
queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
QDIO_MAX_BUFFERS_PER_Q;
out:
atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
if (flush_cnt)
qeth_flush_buffers(queue, 0, start_index, flush_cnt);
/*do some statistics */
card->stats.tx_packets++;
card->stats.tx_bytes += skb->len;
return 0;
}

164
drivers/s390/net/qeth_tso.h
View File

@ -1,5 +1,5 @@
/*
* linux/drivers/s390/net/qeth_tso.h ($Revision: 1.4 $)
* linux/drivers/s390/net/qeth_tso.h ($Revision: 1.7 $)
*
* Header file for qeth TCP Segmentation Offload support.
*
@ -7,52 +7,148 @@
*
* Author(s): Frank Pavlic <pavlic@de.ibm.com>
*
* $Revision: 1.4 $ $Date: 2005/03/24 09:04:18 $
* $Revision: 1.7 $ $Date: 2005/05/04 20:19:18 $
*
*/
#ifndef __QETH_TSO_H__
#define __QETH_TSO_H__
#include <linux/skbuff.h>
#include <linux/tcp.h>
#include <linux/ip.h>
#include <linux/ipv6.h>
#include <net/ip6_checksum.h>
#include "qeth.h"
#include "qeth_mpc.h"
extern int
qeth_tso_send_packet(struct qeth_card *, struct sk_buff *,
struct qeth_qdio_out_q *, int , int);
struct qeth_hdr_ext_tso {
__u16 hdr_tot_len;
__u8 imb_hdr_no;
__u8 reserved;
__u8 hdr_type;
__u8 hdr_version;
__u16 hdr_len;
__u32 payload_len;
__u16 mss;
__u16 dg_hdr_len;
__u8 padding[16];
} __attribute__ ((packed));
static inline struct qeth_hdr_tso *
qeth_tso_prepare_skb(struct qeth_card *card, struct sk_buff **skb)
{
QETH_DBF_TEXT(trace, 5, "tsoprsk");
return qeth_push_skb(card, skb, sizeof(struct qeth_hdr_tso));
}
struct qeth_hdr_tso {
struct qeth_hdr hdr; /*hdr->hdr.l3.xxx*/
struct qeth_hdr_ext_tso ext;
} __attribute__ ((packed));
/**
* fill header for a TSO packet
*/
static inline void
qeth_tso_fill_header(struct qeth_card *card, struct sk_buff *skb)
{
struct qeth_hdr_tso *hdr;
struct tcphdr *tcph;
struct iphdr *iph;
/*some helper functions*/
QETH_DBF_TEXT(trace, 5, "tsofhdr");
hdr = (struct qeth_hdr_tso *) skb->data;
iph = skb->nh.iph;
tcph = skb->h.th;
/*fix header to TSO values ...*/
hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
/*set values which are fix for the first approach ...*/
hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
hdr->ext.imb_hdr_no = 1;
hdr->ext.hdr_type = 1;
hdr->ext.hdr_version = 1;
hdr->ext.hdr_len = 28;
/*insert non-fix values */
hdr->ext.mss = skb_shinfo(skb)->tso_size;
hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4);
hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
sizeof(struct qeth_hdr_tso));
}
/**
* change some header values as requested by hardware
*/
static inline void
qeth_tso_set_tcpip_header(struct qeth_card *card, struct sk_buff *skb)
{
struct iphdr *iph;
struct ipv6hdr *ip6h;
struct tcphdr *tcph;
iph = skb->nh.iph;
ip6h = skb->nh.ipv6h;
tcph = skb->h.th;
tcph->check = 0;
if (skb->protocol == ETH_P_IPV6) {
ip6h->payload_len = 0;
tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
0, IPPROTO_TCP, 0);
return;
}
/*OSA want us to set these values ...*/
tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
0, IPPROTO_TCP, 0);
iph->tot_len = 0;
iph->check = 0;
}
static inline int
qeth_get_elements_no(struct qeth_card *card, void *hdr, struct sk_buff *skb)
qeth_tso_prepare_packet(struct qeth_card *card, struct sk_buff *skb,
int ipv, int cast_type)
{
int elements_needed = 0;
struct qeth_hdr_tso *hdr;
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 > QETH_MAX_BUFFER_ELEMENTS(card)){
PRINT_ERR("qeth_do_send_packet: invalid size of "
"IP packet. Discarded.");
return 0;
QETH_DBF_TEXT(trace, 5, "tsoprep");
hdr = (struct qeth_hdr_tso *) qeth_tso_prepare_skb(card, &skb);
if (hdr == NULL) {
QETH_DBF_TEXT(trace, 4, "tsoperr");
return -ENOMEM;
}
return elements_needed;
memset(hdr, 0, sizeof(struct qeth_hdr_tso));
/*fill first 32 bytes of qdio header as used
*FIXME: TSO has two struct members
* with different names but same size
* */
qeth_fill_header(card, &hdr->hdr, skb, ipv, cast_type);
qeth_tso_fill_header(card, skb);
qeth_tso_set_tcpip_header(card, skb);
return 0;
}
static inline void
__qeth_fill_buffer_frag(struct sk_buff *skb, struct qdio_buffer *buffer,
int is_tso, int *next_element_to_fill)
{
struct skb_frag_struct *frag;
int fragno;
unsigned long addr;
int element, cnt, dlen;
fragno = skb_shinfo(skb)->nr_frags;
element = *next_element_to_fill;
dlen = 0;
if (is_tso)
buffer->element[element].flags =
SBAL_FLAGS_MIDDLE_FRAG;
else
buffer->element[element].flags =
SBAL_FLAGS_FIRST_FRAG;
if ( (dlen = (skb->len - skb->data_len)) ) {
buffer->element[element].addr = skb->data;
buffer->element[element].length = dlen;
element++;
}
for (cnt = 0; cnt < fragno; cnt++) {
frag = &skb_shinfo(skb)->frags[cnt];
addr = (page_to_pfn(frag->page) << PAGE_SHIFT) +
frag->page_offset;
buffer->element[element].addr = (char *)addr;
buffer->element[element].length = frag->size;
if (cnt < (fragno - 1))
buffer->element[element].flags =
SBAL_FLAGS_MIDDLE_FRAG;
else
buffer->element[element].flags =
SBAL_FLAGS_LAST_FRAG;
element++;
}
*next_element_to_fill = element;
}
#endif /* __QETH_TSO_H__ */