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6b26b51b1d
linux/drivers/net/ethernet/rocker/rocker_ofdpa.c
Arkadi Sharshevsky 6b26b51b1d net: bridge: Add support for notifying devices about FDB add/del 
Currently the bridge doesn't notify the underlying devices about new
FDBs learned. The FDB sync is placed on the switchdev notifier chain
because devices may potentially learn FDB that are not directly related
to their ports, for example:

1. Mixed SW/HW bridge - FDBs that point to the ASICs external devices
                        should be offloaded as CPU traps in order to
			perform forwarding in slow path.
2. EVPN - Externally learned FDBs for the vtep device.

Notification is sent only about static FDB add/del. This is done due
to fact that currently this is the only scenario supported by switch
drivers.

Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Reviewed-by: Ivan Vecera <ivecera@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-08 14:16:25 -04:00

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/*
* drivers/net/ethernet/rocker/rocker_ofdpa.c - Rocker switch OF-DPA-like
* implementation
* Copyright (c) 2014 Scott Feldman <sfeldma@gmail.com>
* Copyright (c) 2014-2016 Jiri Pirko <jiri@mellanox.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 of the License, or
* (at your option) any later version.
*/
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/spinlock.h>
#include <linux/hashtable.h>
#include <linux/crc32.h>
#include <linux/netdevice.h>
#include <linux/inetdevice.h>
#include <linux/if_vlan.h>
#include <linux/if_bridge.h>
#include <net/neighbour.h>
#include <net/switchdev.h>
#include <net/ip_fib.h>
#include <net/arp.h>
#include "rocker.h"
#include "rocker_tlv.h"
struct ofdpa_flow_tbl_key {
u32 priority;
enum rocker_of_dpa_table_id tbl_id;
union {
struct {
u32 in_pport;
u32 in_pport_mask;
enum rocker_of_dpa_table_id goto_tbl;
} ig_port;
struct {
u32 in_pport;
__be16 vlan_id;
__be16 vlan_id_mask;
enum rocker_of_dpa_table_id goto_tbl;
bool untagged;
__be16 new_vlan_id;
} vlan;
struct {
u32 in_pport;
u32 in_pport_mask;
__be16 eth_type;
u8 eth_dst[ETH_ALEN];
u8 eth_dst_mask[ETH_ALEN];
__be16 vlan_id;
__be16 vlan_id_mask;
enum rocker_of_dpa_table_id goto_tbl;
bool copy_to_cpu;
} term_mac;
struct {
__be16 eth_type;
__be32 dst4;
__be32 dst4_mask;
enum rocker_of_dpa_table_id goto_tbl;
u32 group_id;
} ucast_routing;
struct {
u8 eth_dst[ETH_ALEN];
u8 eth_dst_mask[ETH_ALEN];
int has_eth_dst;
int has_eth_dst_mask;
__be16 vlan_id;
u32 tunnel_id;
enum rocker_of_dpa_table_id goto_tbl;
u32 group_id;
bool copy_to_cpu;
} bridge;
struct {
u32 in_pport;
u32 in_pport_mask;
u8 eth_src[ETH_ALEN];
u8 eth_src_mask[ETH_ALEN];
u8 eth_dst[ETH_ALEN];
u8 eth_dst_mask[ETH_ALEN];
__be16 eth_type;
__be16 vlan_id;
__be16 vlan_id_mask;
u8 ip_proto;
u8 ip_proto_mask;
u8 ip_tos;
u8 ip_tos_mask;
u32 group_id;
} acl;
};
};
struct ofdpa_flow_tbl_entry {
struct hlist_node entry;
u32 cmd;
u64 cookie;
struct ofdpa_flow_tbl_key key;
size_t key_len;
u32 key_crc32; /* key */
struct fib_info *fi;
};
struct ofdpa_group_tbl_entry {
struct hlist_node entry;
u32 cmd;
u32 group_id; /* key */
u16 group_count;
u32 *group_ids;
union {
struct {
u8 pop_vlan;
} l2_interface;
struct {
u8 eth_src[ETH_ALEN];
u8 eth_dst[ETH_ALEN];
__be16 vlan_id;
u32 group_id;
} l2_rewrite;
struct {
u8 eth_src[ETH_ALEN];
u8 eth_dst[ETH_ALEN];
__be16 vlan_id;
bool ttl_check;
u32 group_id;
} l3_unicast;
};
};
struct ofdpa_fdb_tbl_entry {
struct hlist_node entry;
u32 key_crc32; /* key */
bool learned;
unsigned long touched;
struct ofdpa_fdb_tbl_key {
struct ofdpa_port *ofdpa_port;
u8 addr[ETH_ALEN];
__be16 vlan_id;
} key;
};
struct ofdpa_internal_vlan_tbl_entry {
struct hlist_node entry;
int ifindex; /* key */
u32 ref_count;
__be16 vlan_id;
};
struct ofdpa_neigh_tbl_entry {
struct hlist_node entry;
__be32 ip_addr; /* key */
struct net_device *dev;
u32 ref_count;
u32 index;
u8 eth_dst[ETH_ALEN];
bool ttl_check;
};
enum {
OFDPA_CTRL_LINK_LOCAL_MCAST,
OFDPA_CTRL_LOCAL_ARP,
OFDPA_CTRL_IPV4_MCAST,
OFDPA_CTRL_IPV6_MCAST,
OFDPA_CTRL_DFLT_BRIDGING,
OFDPA_CTRL_DFLT_OVS,
OFDPA_CTRL_MAX,
};
#define OFDPA_INTERNAL_VLAN_ID_BASE 0x0f00
#define OFDPA_N_INTERNAL_VLANS 255
#define OFDPA_VLAN_BITMAP_LEN BITS_TO_LONGS(VLAN_N_VID)
#define OFDPA_INTERNAL_VLAN_BITMAP_LEN BITS_TO_LONGS(OFDPA_N_INTERNAL_VLANS)
#define OFDPA_UNTAGGED_VID 0
struct ofdpa {
struct rocker *rocker;
DECLARE_HASHTABLE(flow_tbl, 16);
spinlock_t flow_tbl_lock; /* for flow tbl accesses */
u64 flow_tbl_next_cookie;
DECLARE_HASHTABLE(group_tbl, 16);
spinlock_t group_tbl_lock; /* for group tbl accesses */
struct timer_list fdb_cleanup_timer;
DECLARE_HASHTABLE(fdb_tbl, 16);
spinlock_t fdb_tbl_lock; /* for fdb tbl accesses */
unsigned long internal_vlan_bitmap[OFDPA_INTERNAL_VLAN_BITMAP_LEN];
DECLARE_HASHTABLE(internal_vlan_tbl, 8);
spinlock_t internal_vlan_tbl_lock; /* for vlan tbl accesses */
DECLARE_HASHTABLE(neigh_tbl, 16);
spinlock_t neigh_tbl_lock; /* for neigh tbl accesses */
u32 neigh_tbl_next_index;
unsigned long ageing_time;
bool fib_aborted;
};
struct ofdpa_port {
struct ofdpa *ofdpa;
struct rocker_port *rocker_port;
struct net_device *dev;
u32 pport;
struct net_device *bridge_dev;
__be16 internal_vlan_id;
int stp_state;
u32 brport_flags;
unsigned long ageing_time;
bool ctrls[OFDPA_CTRL_MAX];
unsigned long vlan_bitmap[OFDPA_VLAN_BITMAP_LEN];
};
static const u8 zero_mac[ETH_ALEN] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
static const u8 ff_mac[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
static const u8 ll_mac[ETH_ALEN] = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 };
static const u8 ll_mask[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0 };
static const u8 mcast_mac[ETH_ALEN] = { 0x01, 0x00, 0x00, 0x00, 0x00, 0x00 };
static const u8 ipv4_mcast[ETH_ALEN] = { 0x01, 0x00, 0x5e, 0x00, 0x00, 0x00 };
static const u8 ipv4_mask[ETH_ALEN] = { 0xff, 0xff, 0xff, 0x80, 0x00, 0x00 };
static const u8 ipv6_mcast[ETH_ALEN] = { 0x33, 0x33, 0x00, 0x00, 0x00, 0x00 };
static const u8 ipv6_mask[ETH_ALEN] = { 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 };
/* Rocker priority levels for flow table entries. Higher
* priority match takes precedence over lower priority match.
*/
enum {
OFDPA_PRIORITY_UNKNOWN = 0,
OFDPA_PRIORITY_IG_PORT = 1,
OFDPA_PRIORITY_VLAN = 1,
OFDPA_PRIORITY_TERM_MAC_UCAST = 0,
OFDPA_PRIORITY_TERM_MAC_MCAST = 1,
OFDPA_PRIORITY_BRIDGING_VLAN_DFLT_EXACT = 1,
OFDPA_PRIORITY_BRIDGING_VLAN_DFLT_WILD = 2,
OFDPA_PRIORITY_BRIDGING_VLAN = 3,
OFDPA_PRIORITY_BRIDGING_TENANT_DFLT_EXACT = 1,
OFDPA_PRIORITY_BRIDGING_TENANT_DFLT_WILD = 2,
OFDPA_PRIORITY_BRIDGING_TENANT = 3,
OFDPA_PRIORITY_ACL_CTRL = 3,
OFDPA_PRIORITY_ACL_NORMAL = 2,
OFDPA_PRIORITY_ACL_DFLT = 1,
};
static bool ofdpa_vlan_id_is_internal(__be16 vlan_id)
{
u16 start = OFDPA_INTERNAL_VLAN_ID_BASE;
u16 end = 0xffe;
u16 _vlan_id = ntohs(vlan_id);
return (_vlan_id >= start && _vlan_id <= end);
}
static __be16 ofdpa_port_vid_to_vlan(const struct ofdpa_port *ofdpa_port,
u16 vid, bool *pop_vlan)
{
__be16 vlan_id;
if (pop_vlan)
*pop_vlan = false;
vlan_id = htons(vid);
if (!vlan_id) {
vlan_id = ofdpa_port->internal_vlan_id;
if (pop_vlan)
*pop_vlan = true;
}
return vlan_id;
}
static u16 ofdpa_port_vlan_to_vid(const struct ofdpa_port *ofdpa_port,
__be16 vlan_id)
{
if (ofdpa_vlan_id_is_internal(vlan_id))
return 0;
return ntohs(vlan_id);
}
static bool ofdpa_port_is_slave(const struct ofdpa_port *ofdpa_port,
const char *kind)
{
return ofdpa_port->bridge_dev &&
!strcmp(ofdpa_port->bridge_dev->rtnl_link_ops->kind, kind);
}
static bool ofdpa_port_is_bridged(const struct ofdpa_port *ofdpa_port)
{
return ofdpa_port_is_slave(ofdpa_port, "bridge");
}
static bool ofdpa_port_is_ovsed(const struct ofdpa_port *ofdpa_port)
{
return ofdpa_port_is_slave(ofdpa_port, "openvswitch");
}
#define OFDPA_OP_FLAG_REMOVE BIT(0)
#define OFDPA_OP_FLAG_NOWAIT BIT(1)
#define OFDPA_OP_FLAG_LEARNED BIT(2)
#define OFDPA_OP_FLAG_REFRESH BIT(3)
static bool ofdpa_flags_nowait(int flags)
{
return flags & OFDPA_OP_FLAG_NOWAIT;
}
static void *__ofdpa_mem_alloc(struct switchdev_trans *trans, int flags,
size_t size)
{
struct switchdev_trans_item *elem = NULL;
gfp_t gfp_flags = (flags & OFDPA_OP_FLAG_NOWAIT) ?
GFP_ATOMIC : GFP_KERNEL;
/* If in transaction prepare phase, allocate the memory
* and enqueue it on a transaction. If in transaction
* commit phase, dequeue the memory from the transaction
* rather than re-allocating the memory. The idea is the
* driver code paths for prepare and commit are identical
* so the memory allocated in the prepare phase is the
* memory used in the commit phase.
*/
if (!trans) {
elem = kzalloc(size + sizeof(*elem), gfp_flags);
} else if (switchdev_trans_ph_prepare(trans)) {
elem = kzalloc(size + sizeof(*elem), gfp_flags);
if (!elem)
return NULL;
switchdev_trans_item_enqueue(trans, elem, kfree, elem);
} else {
elem = switchdev_trans_item_dequeue(trans);
}
return elem ? elem + 1 : NULL;
}
static void *ofdpa_kzalloc(struct switchdev_trans *trans, int flags,
size_t size)
{
return __ofdpa_mem_alloc(trans, flags, size);
}
static void *ofdpa_kcalloc(struct switchdev_trans *trans, int flags,
size_t n, size_t size)
{
return __ofdpa_mem_alloc(trans, flags, n * size);
}
static void ofdpa_kfree(struct switchdev_trans *trans, const void *mem)
{
struct switchdev_trans_item *elem;
/* Frees are ignored if in transaction prepare phase. The
* memory remains on the per-port list until freed in the
* commit phase.
*/
if (switchdev_trans_ph_prepare(trans))
return;
elem = (struct switchdev_trans_item *) mem - 1;
kfree(elem);
}
/*************************************************************
* Flow, group, FDB, internal VLAN and neigh command prepares
*************************************************************/
static int
ofdpa_cmd_flow_tbl_add_ig_port(struct rocker_desc_info *desc_info,
const struct ofdpa_flow_tbl_entry *entry)
{
if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
entry->key.ig_port.in_pport))
return -EMSGSIZE;
if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
entry->key.ig_port.in_pport_mask))
return -EMSGSIZE;
if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
entry->key.ig_port.goto_tbl))
return -EMSGSIZE;
return 0;
}
static int
ofdpa_cmd_flow_tbl_add_vlan(struct rocker_desc_info *desc_info,
const struct ofdpa_flow_tbl_entry *entry)
{
if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
entry->key.vlan.in_pport))
return -EMSGSIZE;
if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
entry->key.vlan.vlan_id))
return -EMSGSIZE;
if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
entry->key.vlan.vlan_id_mask))
return -EMSGSIZE;
if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
entry->key.vlan.goto_tbl))
return -EMSGSIZE;
if (entry->key.vlan.untagged &&
rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_NEW_VLAN_ID,
entry->key.vlan.new_vlan_id))
return -EMSGSIZE;
return 0;
}
static int
ofdpa_cmd_flow_tbl_add_term_mac(struct rocker_desc_info *desc_info,
const struct ofdpa_flow_tbl_entry *entry)
{
if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
entry->key.term_mac.in_pport))
return -EMSGSIZE;
if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
entry->key.term_mac.in_pport_mask))
return -EMSGSIZE;
if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
entry->key.term_mac.eth_type))
return -EMSGSIZE;
if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
ETH_ALEN, entry->key.term_mac.eth_dst))
return -EMSGSIZE;
if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
ETH_ALEN, entry->key.term_mac.eth_dst_mask))
return -EMSGSIZE;
if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
entry->key.term_mac.vlan_id))
return -EMSGSIZE;
if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
entry->key.term_mac.vlan_id_mask))
return -EMSGSIZE;
if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
entry->key.term_mac.goto_tbl))
return -EMSGSIZE;
if (entry->key.term_mac.copy_to_cpu &&
rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
entry->key.term_mac.copy_to_cpu))
return -EMSGSIZE;
return 0;
}
static int
ofdpa_cmd_flow_tbl_add_ucast_routing(struct rocker_desc_info *desc_info,
const struct ofdpa_flow_tbl_entry *entry)
{
if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
entry->key.ucast_routing.eth_type))
return -EMSGSIZE;
if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP,
entry->key.ucast_routing.dst4))
return -EMSGSIZE;
if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP_MASK,
entry->key.ucast_routing.dst4_mask))
return -EMSGSIZE;
if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
entry->key.ucast_routing.goto_tbl))
return -EMSGSIZE;
if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
entry->key.ucast_routing.group_id))
return -EMSGSIZE;
return 0;
}
static int
ofdpa_cmd_flow_tbl_add_bridge(struct rocker_desc_info *desc_info,
const struct ofdpa_flow_tbl_entry *entry)
{
if (entry->key.bridge.has_eth_dst &&
rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
ETH_ALEN, entry->key.bridge.eth_dst))
return -EMSGSIZE;
if (entry->key.bridge.has_eth_dst_mask &&
rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
ETH_ALEN, entry->key.bridge.eth_dst_mask))
return -EMSGSIZE;
if (entry->key.bridge.vlan_id &&
rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
entry->key.bridge.vlan_id))
return -EMSGSIZE;
if (entry->key.bridge.tunnel_id &&
rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_TUNNEL_ID,
entry->key.bridge.tunnel_id))
return -EMSGSIZE;
if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
entry->key.bridge.goto_tbl))
return -EMSGSIZE;
if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
entry->key.bridge.group_id))
return -EMSGSIZE;
if (entry->key.bridge.copy_to_cpu &&
rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
entry->key.bridge.copy_to_cpu))
return -EMSGSIZE;
return 0;
}
static int
ofdpa_cmd_flow_tbl_add_acl(struct rocker_desc_info *desc_info,
const struct ofdpa_flow_tbl_entry *entry)
{
if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
entry->key.acl.in_pport))
return -EMSGSIZE;
if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
entry->key.acl.in_pport_mask))
return -EMSGSIZE;
if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
ETH_ALEN, entry->key.acl.eth_src))
return -EMSGSIZE;
if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC_MASK,
ETH_ALEN, entry->key.acl.eth_src_mask))
return -EMSGSIZE;
if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
ETH_ALEN, entry->key.acl.eth_dst))
return -EMSGSIZE;
if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
ETH_ALEN, entry->key.acl.eth_dst_mask))
return -EMSGSIZE;
if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
entry->key.acl.eth_type))
return -EMSGSIZE;
if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
entry->key.acl.vlan_id))
return -EMSGSIZE;
if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
entry->key.acl.vlan_id_mask))
return -EMSGSIZE;
switch (ntohs(entry->key.acl.eth_type)) {
case ETH_P_IP:
case ETH_P_IPV6:
if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_PROTO,
entry->key.acl.ip_proto))
return -EMSGSIZE;
if (rocker_tlv_put_u8(desc_info,
ROCKER_TLV_OF_DPA_IP_PROTO_MASK,
entry->key.acl.ip_proto_mask))
return -EMSGSIZE;
if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_DSCP,
entry->key.acl.ip_tos & 0x3f))
return -EMSGSIZE;
if (rocker_tlv_put_u8(desc_info,
ROCKER_TLV_OF_DPA_IP_DSCP_MASK,
entry->key.acl.ip_tos_mask & 0x3f))
return -EMSGSIZE;
if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_ECN,
(entry->key.acl.ip_tos & 0xc0) >> 6))
return -EMSGSIZE;
if (rocker_tlv_put_u8(desc_info,
ROCKER_TLV_OF_DPA_IP_ECN_MASK,
(entry->key.acl.ip_tos_mask & 0xc0) >> 6))
return -EMSGSIZE;
break;
}
if (entry->key.acl.group_id != ROCKER_GROUP_NONE &&
rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
entry->key.acl.group_id))
return -EMSGSIZE;
return 0;
}
static int ofdpa_cmd_flow_tbl_add(const struct rocker_port *rocker_port,
struct rocker_desc_info *desc_info,
void *priv)
{
const struct ofdpa_flow_tbl_entry *entry = priv;
struct rocker_tlv *cmd_info;
int err = 0;
if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
return -EMSGSIZE;
cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
if (!cmd_info)
return -EMSGSIZE;
if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_TABLE_ID,
entry->key.tbl_id))
return -EMSGSIZE;
if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_PRIORITY,
entry->key.priority))
return -EMSGSIZE;
if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_HARDTIME, 0))
return -EMSGSIZE;
if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
entry->cookie))
return -EMSGSIZE;
switch (entry->key.tbl_id) {
case ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT:
err = ofdpa_cmd_flow_tbl_add_ig_port(desc_info, entry);
break;
case ROCKER_OF_DPA_TABLE_ID_VLAN:
err = ofdpa_cmd_flow_tbl_add_vlan(desc_info, entry);
break;
case ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC:
err = ofdpa_cmd_flow_tbl_add_term_mac(desc_info, entry);
break;
case ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING:
err = ofdpa_cmd_flow_tbl_add_ucast_routing(desc_info, entry);
break;
case ROCKER_OF_DPA_TABLE_ID_BRIDGING:
err = ofdpa_cmd_flow_tbl_add_bridge(desc_info, entry);
break;
case ROCKER_OF_DPA_TABLE_ID_ACL_POLICY:
err = ofdpa_cmd_flow_tbl_add_acl(desc_info, entry);
break;
default:
err = -ENOTSUPP;
break;
}
if (err)
return err;
rocker_tlv_nest_end(desc_info, cmd_info);
return 0;
}
static int ofdpa_cmd_flow_tbl_del(const struct rocker_port *rocker_port,
struct rocker_desc_info *desc_info,
void *priv)
{
const struct ofdpa_flow_tbl_entry *entry = priv;
struct rocker_tlv *cmd_info;
if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
return -EMSGSIZE;
cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
if (!cmd_info)
return -EMSGSIZE;
if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
entry->cookie))
return -EMSGSIZE;
rocker_tlv_nest_end(desc_info, cmd_info);
return 0;
}
static int
ofdpa_cmd_group_tbl_add_l2_interface(struct rocker_desc_info *desc_info,
struct ofdpa_group_tbl_entry *entry)
{
if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_OUT_PPORT,
ROCKER_GROUP_PORT_GET(entry->group_id)))
return -EMSGSIZE;
if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_POP_VLAN,
entry->l2_interface.pop_vlan))
return -EMSGSIZE;
return 0;
}
static int
ofdpa_cmd_group_tbl_add_l2_rewrite(struct rocker_desc_info *desc_info,
const struct ofdpa_group_tbl_entry *entry)
{
if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
entry->l2_rewrite.group_id))
return -EMSGSIZE;
if (!is_zero_ether_addr(entry->l2_rewrite.eth_src) &&
rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
ETH_ALEN, entry->l2_rewrite.eth_src))
return -EMSGSIZE;
if (!is_zero_ether_addr(entry->l2_rewrite.eth_dst) &&
rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
ETH_ALEN, entry->l2_rewrite.eth_dst))
return -EMSGSIZE;
if (entry->l2_rewrite.vlan_id &&
rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
entry->l2_rewrite.vlan_id))
return -EMSGSIZE;
return 0;
}
static int
ofdpa_cmd_group_tbl_add_group_ids(struct rocker_desc_info *desc_info,
const struct ofdpa_group_tbl_entry *entry)
{
int i;
struct rocker_tlv *group_ids;
if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GROUP_COUNT,
entry->group_count))
return -EMSGSIZE;
group_ids = rocker_tlv_nest_start(desc_info,
ROCKER_TLV_OF_DPA_GROUP_IDS);
if (!group_ids)
return -EMSGSIZE;
for (i = 0; i < entry->group_count; i++)
/* Note TLV array is 1-based */
if (rocker_tlv_put_u32(desc_info, i + 1, entry->group_ids[i]))
return -EMSGSIZE;
rocker_tlv_nest_end(desc_info, group_ids);
return 0;
}
static int
ofdpa_cmd_group_tbl_add_l3_unicast(struct rocker_desc_info *desc_info,
const struct ofdpa_group_tbl_entry *entry)
{
if (!is_zero_ether_addr(entry->l3_unicast.eth_src) &&
rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
ETH_ALEN, entry->l3_unicast.eth_src))
return -EMSGSIZE;
if (!is_zero_ether_addr(entry->l3_unicast.eth_dst) &&
rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
ETH_ALEN, entry->l3_unicast.eth_dst))
return -EMSGSIZE;
if (entry->l3_unicast.vlan_id &&
rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
entry->l3_unicast.vlan_id))
return -EMSGSIZE;
if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_TTL_CHECK,
entry->l3_unicast.ttl_check))
return -EMSGSIZE;
if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
entry->l3_unicast.group_id))
return -EMSGSIZE;
return 0;
}
static int ofdpa_cmd_group_tbl_add(const struct rocker_port *rocker_port,
struct rocker_desc_info *desc_info,
void *priv)
{
struct ofdpa_group_tbl_entry *entry = priv;
struct rocker_tlv *cmd_info;
int err = 0;
if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
return -EMSGSIZE;
cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
if (!cmd_info)
return -EMSGSIZE;
if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
entry->group_id))
return -EMSGSIZE;
switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
case ROCKER_OF_DPA_GROUP_TYPE_L2_INTERFACE:
err = ofdpa_cmd_group_tbl_add_l2_interface(desc_info, entry);
break;
case ROCKER_OF_DPA_GROUP_TYPE_L2_REWRITE:
err = ofdpa_cmd_group_tbl_add_l2_rewrite(desc_info, entry);
break;
case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
err = ofdpa_cmd_group_tbl_add_group_ids(desc_info, entry);
break;
case ROCKER_OF_DPA_GROUP_TYPE_L3_UCAST:
err = ofdpa_cmd_group_tbl_add_l3_unicast(desc_info, entry);
break;
default:
err = -ENOTSUPP;
break;
}
if (err)
return err;
rocker_tlv_nest_end(desc_info, cmd_info);
return 0;
}
static int ofdpa_cmd_group_tbl_del(const struct rocker_port *rocker_port,
struct rocker_desc_info *desc_info,
void *priv)
{
const struct ofdpa_group_tbl_entry *entry = priv;
struct rocker_tlv *cmd_info;
if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
return -EMSGSIZE;
cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
if (!cmd_info)
return -EMSGSIZE;
if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
entry->group_id))
return -EMSGSIZE;
rocker_tlv_nest_end(desc_info, cmd_info);
return 0;
}
/***************************************************
* Flow, group, FDB, internal VLAN and neigh tables
***************************************************/
static struct ofdpa_flow_tbl_entry *
ofdpa_flow_tbl_find(const struct ofdpa *ofdpa,
const struct ofdpa_flow_tbl_entry *match)
{
struct ofdpa_flow_tbl_entry *found;
size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
hash_for_each_possible(ofdpa->flow_tbl, found,
entry, match->key_crc32) {
if (memcmp(&found->key, &match->key, key_len) == 0)
return found;
}
return NULL;
}
static int ofdpa_flow_tbl_add(struct ofdpa_port *ofdpa_port,
struct switchdev_trans *trans, int flags,
struct ofdpa_flow_tbl_entry *match)
{
struct ofdpa *ofdpa = ofdpa_port->ofdpa;
struct ofdpa_flow_tbl_entry *found;
size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
unsigned long lock_flags;
match->key_crc32 = crc32(~0, &match->key, key_len);
spin_lock_irqsave(&ofdpa->flow_tbl_lock, lock_flags);
found = ofdpa_flow_tbl_find(ofdpa, match);
if (found) {
match->cookie = found->cookie;
if (!switchdev_trans_ph_prepare(trans))
hash_del(&found->entry);
ofdpa_kfree(trans, found);
found = match;
found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_MOD;
} else {
found = match;
found->cookie = ofdpa->flow_tbl_next_cookie++;
found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_ADD;
}
if (!switchdev_trans_ph_prepare(trans))
hash_add(ofdpa->flow_tbl, &found->entry, found->key_crc32);
spin_unlock_irqrestore(&ofdpa->flow_tbl_lock, lock_flags);
if (!switchdev_trans_ph_prepare(trans))
return rocker_cmd_exec(ofdpa_port->rocker_port,
ofdpa_flags_nowait(flags),
ofdpa_cmd_flow_tbl_add,
found, NULL, NULL);
return 0;
}
static int ofdpa_flow_tbl_del(struct ofdpa_port *ofdpa_port,
struct switchdev_trans *trans, int flags,
struct ofdpa_flow_tbl_entry *match)
{
struct ofdpa *ofdpa = ofdpa_port->ofdpa;
struct ofdpa_flow_tbl_entry *found;
size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
unsigned long lock_flags;
int err = 0;
match->key_crc32 = crc32(~0, &match->key, key_len);
spin_lock_irqsave(&ofdpa->flow_tbl_lock, lock_flags);
found = ofdpa_flow_tbl_find(ofdpa, match);
if (found) {
if (!switchdev_trans_ph_prepare(trans))
hash_del(&found->entry);
found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_DEL;
}
spin_unlock_irqrestore(&ofdpa->flow_tbl_lock, lock_flags);
ofdpa_kfree(trans, match);
if (found) {
if (!switchdev_trans_ph_prepare(trans))
err = rocker_cmd_exec(ofdpa_port->rocker_port,
ofdpa_flags_nowait(flags),
ofdpa_cmd_flow_tbl_del,
found, NULL, NULL);
ofdpa_kfree(trans, found);
}
return err;
}
static int ofdpa_flow_tbl_do(struct ofdpa_port *ofdpa_port,
struct switchdev_trans *trans, int flags,
struct ofdpa_flow_tbl_entry *entry)
{
if (flags & OFDPA_OP_FLAG_REMOVE)
return ofdpa_flow_tbl_del(ofdpa_port, trans, flags, entry);
else
return ofdpa_flow_tbl_add(ofdpa_port, trans, flags, entry);
}
static int ofdpa_flow_tbl_ig_port(struct ofdpa_port *ofdpa_port,
struct switchdev_trans *trans, int flags,
u32 in_pport, u32 in_pport_mask,
enum rocker_of_dpa_table_id goto_tbl)
{
struct ofdpa_flow_tbl_entry *entry;
entry = ofdpa_kzalloc(trans, flags, sizeof(*entry));
if (!entry)
return -ENOMEM;
entry->key.priority = OFDPA_PRIORITY_IG_PORT;
entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT;
entry->key.ig_port.in_pport = in_pport;
entry->key.ig_port.in_pport_mask = in_pport_mask;
entry->key.ig_port.goto_tbl = goto_tbl;
return ofdpa_flow_tbl_do(ofdpa_port, trans, flags, entry);
}
static int ofdpa_flow_tbl_vlan(struct ofdpa_port *ofdpa_port,
struct switchdev_trans *trans, int flags,
u32 in_pport, __be16 vlan_id,
__be16 vlan_id_mask,
enum rocker_of_dpa_table_id goto_tbl,
bool untagged, __be16 new_vlan_id)
{
struct ofdpa_flow_tbl_entry *entry;
entry = ofdpa_kzalloc(trans, flags, sizeof(*entry));
if (!entry)
return -ENOMEM;
entry->key.priority = OFDPA_PRIORITY_VLAN;
entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_VLAN;
entry->key.vlan.in_pport = in_pport;
entry->key.vlan.vlan_id = vlan_id;
entry->key.vlan.vlan_id_mask = vlan_id_mask;
entry->key.vlan.goto_tbl = goto_tbl;
entry->key.vlan.untagged = untagged;
entry->key.vlan.new_vlan_id = new_vlan_id;
return ofdpa_flow_tbl_do(ofdpa_port, trans, flags, entry);
}
static int ofdpa_flow_tbl_term_mac(struct ofdpa_port *ofdpa_port,
struct switchdev_trans *trans,
u32 in_pport, u32 in_pport_mask,
__be16 eth_type, const u8 *eth_dst,
const u8 *eth_dst_mask, __be16 vlan_id,
__be16 vlan_id_mask, bool copy_to_cpu,
int flags)
{
struct ofdpa_flow_tbl_entry *entry;
entry = ofdpa_kzalloc(trans, flags, sizeof(*entry));
if (!entry)
return -ENOMEM;
if (is_multicast_ether_addr(eth_dst)) {
entry->key.priority = OFDPA_PRIORITY_TERM_MAC_MCAST;
entry->key.term_mac.goto_tbl =
ROCKER_OF_DPA_TABLE_ID_MULTICAST_ROUTING;
} else {
entry->key.priority = OFDPA_PRIORITY_TERM_MAC_UCAST;
entry->key.term_mac.goto_tbl =
ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING;
}
entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
entry->key.term_mac.in_pport = in_pport;
entry->key.term_mac.in_pport_mask = in_pport_mask;
entry->key.term_mac.eth_type = eth_type;
ether_addr_copy(entry->key.term_mac.eth_dst, eth_dst);
ether_addr_copy(entry->key.term_mac.eth_dst_mask, eth_dst_mask);
entry->key.term_mac.vlan_id = vlan_id;
entry->key.term_mac.vlan_id_mask = vlan_id_mask;
entry->key.term_mac.copy_to_cpu = copy_to_cpu;
return ofdpa_flow_tbl_do(ofdpa_port, trans, flags, entry);
}
static int ofdpa_flow_tbl_bridge(struct ofdpa_port *ofdpa_port,
struct switchdev_trans *trans, int flags,
const u8 *eth_dst, const u8 *eth_dst_mask,
__be16 vlan_id, u32 tunnel_id,
enum rocker_of_dpa_table_id goto_tbl,
u32 group_id, bool copy_to_cpu)
{
struct ofdpa_flow_tbl_entry *entry;
u32 priority;
bool vlan_bridging = !!vlan_id;
bool dflt = !eth_dst || (eth_dst && eth_dst_mask);
bool wild = false;
entry = ofdpa_kzalloc(trans, flags, sizeof(*entry));
if (!entry)
return -ENOMEM;
entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_BRIDGING;
if (eth_dst) {
entry->key.bridge.has_eth_dst = 1;
ether_addr_copy(entry->key.bridge.eth_dst, eth_dst);
}
if (eth_dst_mask) {
entry->key.bridge.has_eth_dst_mask = 1;
ether_addr_copy(entry->key.bridge.eth_dst_mask, eth_dst_mask);
if (!ether_addr_equal(eth_dst_mask, ff_mac))
wild = true;
}
priority = OFDPA_PRIORITY_UNKNOWN;
if (vlan_bridging && dflt && wild)
priority = OFDPA_PRIORITY_BRIDGING_VLAN_DFLT_WILD;
else if (vlan_bridging && dflt && !wild)
priority = OFDPA_PRIORITY_BRIDGING_VLAN_DFLT_EXACT;
else if (vlan_bridging && !dflt)
priority = OFDPA_PRIORITY_BRIDGING_VLAN;
else if (!vlan_bridging && dflt && wild)
priority = OFDPA_PRIORITY_BRIDGING_TENANT_DFLT_WILD;
else if (!vlan_bridging && dflt && !wild)
priority = OFDPA_PRIORITY_BRIDGING_TENANT_DFLT_EXACT;
else if (!vlan_bridging && !dflt)
priority = OFDPA_PRIORITY_BRIDGING_TENANT;
entry->key.priority = priority;
entry->key.bridge.vlan_id = vlan_id;
entry->key.bridge.tunnel_id = tunnel_id;
entry->key.bridge.goto_tbl = goto_tbl;
entry->key.bridge.group_id = group_id;
entry->key.bridge.copy_to_cpu = copy_to_cpu;
return ofdpa_flow_tbl_do(ofdpa_port, trans, flags, entry);
}
static int ofdpa_flow_tbl_ucast4_routing(struct ofdpa_port *ofdpa_port,
struct switchdev_trans *trans,
__be16 eth_type, __be32 dst,
__be32 dst_mask, u32 priority,
enum rocker_of_dpa_table_id goto_tbl,
u32 group_id, struct fib_info *fi,
int flags)
{
struct ofdpa_flow_tbl_entry *entry;
entry = ofdpa_kzalloc(trans, flags, sizeof(*entry));
if (!entry)
return -ENOMEM;
entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING;
entry->key.priority = priority;
entry->key.ucast_routing.eth_type = eth_type;
entry->key.ucast_routing.dst4 = dst;
entry->key.ucast_routing.dst4_mask = dst_mask;
entry->key.ucast_routing.goto_tbl = goto_tbl;
entry->key.ucast_routing.group_id = group_id;
entry->key_len = offsetof(struct ofdpa_flow_tbl_key,
ucast_routing.group_id);
entry->fi = fi;
return ofdpa_flow_tbl_do(ofdpa_port, trans, flags, entry);
}
static int ofdpa_flow_tbl_acl(struct ofdpa_port *ofdpa_port,
struct switchdev_trans *trans, int flags,
u32 in_pport, u32 in_pport_mask,
const u8 *eth_src, const u8 *eth_src_mask,
const u8 *eth_dst, const u8 *eth_dst_mask,
__be16 eth_type, __be16 vlan_id,
__be16 vlan_id_mask, u8 ip_proto,
u8 ip_proto_mask, u8 ip_tos, u8 ip_tos_mask,
u32 group_id)
{
u32 priority;
struct ofdpa_flow_tbl_entry *entry;
entry = ofdpa_kzalloc(trans, flags, sizeof(*entry));
if (!entry)
return -ENOMEM;
priority = OFDPA_PRIORITY_ACL_NORMAL;
if (eth_dst && eth_dst_mask) {
if (ether_addr_equal(eth_dst_mask, mcast_mac))
priority = OFDPA_PRIORITY_ACL_DFLT;
else if (is_link_local_ether_addr(eth_dst))
priority = OFDPA_PRIORITY_ACL_CTRL;
}
entry->key.priority = priority;
entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
entry->key.acl.in_pport = in_pport;
entry->key.acl.in_pport_mask = in_pport_mask;
if (eth_src)
ether_addr_copy(entry->key.acl.eth_src, eth_src);
if (eth_src_mask)
ether_addr_copy(entry->key.acl.eth_src_mask, eth_src_mask);
if (eth_dst)
ether_addr_copy(entry->key.acl.eth_dst, eth_dst);
if (eth_dst_mask)
ether_addr_copy(entry->key.acl.eth_dst_mask, eth_dst_mask);
entry->key.acl.eth_type = eth_type;
entry->key.acl.vlan_id = vlan_id;
entry->key.acl.vlan_id_mask = vlan_id_mask;
entry->key.acl.ip_proto = ip_proto;
entry->key.acl.ip_proto_mask = ip_proto_mask;
entry->key.acl.ip_tos = ip_tos;
entry->key.acl.ip_tos_mask = ip_tos_mask;
entry->key.acl.group_id = group_id;
return ofdpa_flow_tbl_do(ofdpa_port, trans, flags, entry);
}
static struct ofdpa_group_tbl_entry *
ofdpa_group_tbl_find(const struct ofdpa *ofdpa,
const struct ofdpa_group_tbl_entry *match)
{
struct ofdpa_group_tbl_entry *found;
hash_for_each_possible(ofdpa->group_tbl, found,
entry, match->group_id) {
if (found->group_id == match->group_id)
return found;
}
return NULL;
}
static void ofdpa_group_tbl_entry_free(struct switchdev_trans *trans,
struct ofdpa_group_tbl_entry *entry)
{
switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
ofdpa_kfree(trans, entry->group_ids);
break;
default:
break;
}
ofdpa_kfree(trans, entry);
}
static int ofdpa_group_tbl_add(struct ofdpa_port *ofdpa_port,
struct switchdev_trans *trans, int flags,
struct ofdpa_group_tbl_entry *match)
{
struct ofdpa *ofdpa = ofdpa_port->ofdpa;
struct ofdpa_group_tbl_entry *found;
unsigned long lock_flags;
spin_lock_irqsave(&ofdpa->group_tbl_lock, lock_flags);
found = ofdpa_group_tbl_find(ofdpa, match);
if (found) {
if (!switchdev_trans_ph_prepare(trans))
hash_del(&found->entry);
ofdpa_group_tbl_entry_free(trans, found);
found = match;
found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_MOD;
} else {
found = match;
found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_ADD;
}
if (!switchdev_trans_ph_prepare(trans))
hash_add(ofdpa->group_tbl, &found->entry, found->group_id);
spin_unlock_irqrestore(&ofdpa->group_tbl_lock, lock_flags);
if (!switchdev_trans_ph_prepare(trans))
return rocker_cmd_exec(ofdpa_port->rocker_port,
ofdpa_flags_nowait(flags),
ofdpa_cmd_group_tbl_add,
found, NULL, NULL);
return 0;
}
static int ofdpa_group_tbl_del(struct ofdpa_port *ofdpa_port,
struct switchdev_trans *trans, int flags,
struct ofdpa_group_tbl_entry *match)
{
struct ofdpa *ofdpa = ofdpa_port->ofdpa;
struct ofdpa_group_tbl_entry *found;
unsigned long lock_flags;
int err = 0;
spin_lock_irqsave(&ofdpa->group_tbl_lock, lock_flags);
found = ofdpa_group_tbl_find(ofdpa, match);
if (found) {
if (!switchdev_trans_ph_prepare(trans))
hash_del(&found->entry);
found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_DEL;
}
spin_unlock_irqrestore(&ofdpa->group_tbl_lock, lock_flags);
ofdpa_group_tbl_entry_free(trans, match);
if (found) {
if (!switchdev_trans_ph_prepare(trans))
err = rocker_cmd_exec(ofdpa_port->rocker_port,
ofdpa_flags_nowait(flags),
ofdpa_cmd_group_tbl_del,
found, NULL, NULL);
ofdpa_group_tbl_entry_free(trans, found);
}
return err;
}
static int ofdpa_group_tbl_do(struct ofdpa_port *ofdpa_port,
struct switchdev_trans *trans, int flags,
struct ofdpa_group_tbl_entry *entry)
{
if (flags & OFDPA_OP_FLAG_REMOVE)
return ofdpa_group_tbl_del(ofdpa_port, trans, flags, entry);
else
return ofdpa_group_tbl_add(ofdpa_port, trans, flags, entry);
}
static int ofdpa_group_l2_interface(struct ofdpa_port *ofdpa_port,
struct switchdev_trans *trans, int flags,
__be16 vlan_id, u32 out_pport,
int pop_vlan)
{
struct ofdpa_group_tbl_entry *entry;
entry = ofdpa_kzalloc(trans, flags, sizeof(*entry));
if (!entry)
return -ENOMEM;
entry->group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
entry->l2_interface.pop_vlan = pop_vlan;
return ofdpa_group_tbl_do(ofdpa_port, trans, flags, entry);
}
static int ofdpa_group_l2_fan_out(struct ofdpa_port *ofdpa_port,
struct switchdev_trans *trans,
int flags, u8 group_count,
const u32 *group_ids, u32 group_id)
{
struct ofdpa_group_tbl_entry *entry;
entry = ofdpa_kzalloc(trans, flags, sizeof(*entry));
if (!entry)
return -ENOMEM;
entry->group_id = group_id;
entry->group_count = group_count;
entry->group_ids = ofdpa_kcalloc(trans, flags,
group_count, sizeof(u32));
if (!entry->group_ids) {
ofdpa_kfree(trans, entry);
return -ENOMEM;
}
memcpy(entry->group_ids, group_ids, group_count * sizeof(u32));
return ofdpa_group_tbl_do(ofdpa_port, trans, flags, entry);
}
static int ofdpa_group_l2_flood(struct ofdpa_port *ofdpa_port,
struct switchdev_trans *trans, int flags,
__be16 vlan_id, u8 group_count,
const u32 *group_ids, u32 group_id)
{
return ofdpa_group_l2_fan_out(ofdpa_port, trans, flags,
group_count, group_ids,
group_id);
}
static int ofdpa_group_l3_unicast(struct ofdpa_port *ofdpa_port,
struct switchdev_trans *trans, int flags,
u32 index, const u8 *src_mac, const u8 *dst_mac,
__be16 vlan_id, bool ttl_check, u32 pport)
{
struct ofdpa_group_tbl_entry *entry;
entry = ofdpa_kzalloc(trans, flags, sizeof(*entry));
if (!entry)
return -ENOMEM;
entry->group_id = ROCKER_GROUP_L3_UNICAST(index);
if (src_mac)
ether_addr_copy(entry->l3_unicast.eth_src, src_mac);
if (dst_mac)
ether_addr_copy(entry->l3_unicast.eth_dst, dst_mac);
entry->l3_unicast.vlan_id = vlan_id;
entry->l3_unicast.ttl_check = ttl_check;
entry->l3_unicast.group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, pport);
return ofdpa_group_tbl_do(ofdpa_port, trans, flags, entry);
}
static struct ofdpa_neigh_tbl_entry *
ofdpa_neigh_tbl_find(const struct ofdpa *ofdpa, __be32 ip_addr)
{
struct ofdpa_neigh_tbl_entry *found;
hash_for_each_possible(ofdpa->neigh_tbl, found,
entry, be32_to_cpu(ip_addr))
if (found->ip_addr == ip_addr)
return found;
return NULL;
}
static void ofdpa_neigh_add(struct ofdpa *ofdpa,
struct switchdev_trans *trans,
struct ofdpa_neigh_tbl_entry *entry)
{
if (!switchdev_trans_ph_commit(trans))
entry->index = ofdpa->neigh_tbl_next_index++;
if (switchdev_trans_ph_prepare(trans))
return;
entry->ref_count++;
hash_add(ofdpa->neigh_tbl, &entry->entry,
be32_to_cpu(entry->ip_addr));
}
static void ofdpa_neigh_del(struct switchdev_trans *trans,
struct ofdpa_neigh_tbl_entry *entry)
{
if (switchdev_trans_ph_prepare(trans))
return;
if (--entry->ref_count == 0) {
hash_del(&entry->entry);
ofdpa_kfree(trans, entry);
}
}
static void ofdpa_neigh_update(struct ofdpa_neigh_tbl_entry *entry,
struct switchdev_trans *trans,
const u8 *eth_dst, bool ttl_check)
{
if (eth_dst) {
ether_addr_copy(entry->eth_dst, eth_dst);
entry->ttl_check = ttl_check;
} else if (!switchdev_trans_ph_prepare(trans)) {
entry->ref_count++;
}
}
static int ofdpa_port_ipv4_neigh(struct ofdpa_port *ofdpa_port,
struct switchdev_trans *trans,
int flags, __be32 ip_addr, const u8 *eth_dst)
{
struct ofdpa *ofdpa = ofdpa_port->ofdpa;
struct ofdpa_neigh_tbl_entry *entry;
struct ofdpa_neigh_tbl_entry *found;
unsigned long lock_flags;
__be16 eth_type = htons(ETH_P_IP);
enum rocker_of_dpa_table_id goto_tbl =
ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
u32 group_id;
u32 priority = 0;
bool adding = !(flags & OFDPA_OP_FLAG_REMOVE);
bool updating;
bool removing;
int err = 0;
entry = ofdpa_kzalloc(trans, flags, sizeof(*entry));
if (!entry)
return -ENOMEM;
spin_lock_irqsave(&ofdpa->neigh_tbl_lock, lock_flags);
found = ofdpa_neigh_tbl_find(ofdpa, ip_addr);
updating = found && adding;
removing = found && !adding;
adding = !found && adding;
if (adding) {
entry->ip_addr = ip_addr;
entry->dev = ofdpa_port->dev;
ether_addr_copy(entry->eth_dst, eth_dst);
entry->ttl_check = true;
ofdpa_neigh_add(ofdpa, trans, entry);
} else if (removing) {
memcpy(entry, found, sizeof(*entry));
ofdpa_neigh_del(trans, found);
} else if (updating) {
ofdpa_neigh_update(found, trans, eth_dst, true);
memcpy(entry, found, sizeof(*entry));
} else {
err = -ENOENT;
}
spin_unlock_irqrestore(&ofdpa->neigh_tbl_lock, lock_flags);
if (err)
goto err_out;
/* For each active neighbor, we have an L3 unicast group and
* a /32 route to the neighbor, which uses the L3 unicast
* group. The L3 unicast group can also be referred to by
* other routes' nexthops.
*/
err = ofdpa_group_l3_unicast(ofdpa_port, trans, flags,
entry->index,
ofdpa_port->dev->dev_addr,
entry->eth_dst,
ofdpa_port->internal_vlan_id,
entry->ttl_check,
ofdpa_port->pport);
if (err) {
netdev_err(ofdpa_port->dev, "Error (%d) L3 unicast group index %d\n",
err, entry->index);
goto err_out;
}
if (adding || removing) {
group_id = ROCKER_GROUP_L3_UNICAST(entry->index);
err = ofdpa_flow_tbl_ucast4_routing(ofdpa_port, trans,
eth_type, ip_addr,
inet_make_mask(32),
priority, goto_tbl,
group_id, NULL, flags);
if (err)
netdev_err(ofdpa_port->dev, "Error (%d) /32 unicast route %pI4 group 0x%08x\n",
err, &entry->ip_addr, group_id);
}
err_out:
if (!adding)
ofdpa_kfree(trans, entry);
return err;
}
static int ofdpa_port_ipv4_resolve(struct ofdpa_port *ofdpa_port,
struct switchdev_trans *trans,
__be32 ip_addr)
{
struct net_device *dev = ofdpa_port->dev;
struct neighbour *n = __ipv4_neigh_lookup(dev, (__force u32)ip_addr);
int err = 0;
if (!n) {
n = neigh_create(&arp_tbl, &ip_addr, dev);
if (IS_ERR(n))
return PTR_ERR(n);
}
/* If the neigh is already resolved, then go ahead and
* install the entry, otherwise start the ARP process to
* resolve the neigh.
*/
if (n->nud_state & NUD_VALID)
err = ofdpa_port_ipv4_neigh(ofdpa_port, trans, 0,
ip_addr, n->ha);
else
neigh_event_send(n, NULL);
neigh_release(n);
return err;
}
static int ofdpa_port_ipv4_nh(struct ofdpa_port *ofdpa_port,
struct switchdev_trans *trans, int flags,
__be32 ip_addr, u32 *index)
{
struct ofdpa *ofdpa = ofdpa_port->ofdpa;
struct ofdpa_neigh_tbl_entry *entry;
struct ofdpa_neigh_tbl_entry *found;
unsigned long lock_flags;
bool adding = !(flags & OFDPA_OP_FLAG_REMOVE);
bool updating;
bool removing;
bool resolved = true;
int err = 0;
entry = ofdpa_kzalloc(trans, flags, sizeof(*entry));
if (!entry)
return -ENOMEM;
spin_lock_irqsave(&ofdpa->neigh_tbl_lock, lock_flags);
found = ofdpa_neigh_tbl_find(ofdpa, ip_addr);
updating = found && adding;
removing = found && !adding;
adding = !found && adding;
if (adding) {
entry->ip_addr = ip_addr;
entry->dev = ofdpa_port->dev;
ofdpa_neigh_add(ofdpa, trans, entry);
*index = entry->index;
resolved = false;
} else if (removing) {
ofdpa_neigh_del(trans, found);
*index = found->index;
} else if (updating) {
ofdpa_neigh_update(found, trans, NULL, false);
resolved = !is_zero_ether_addr(found->eth_dst);
*index = found->index;
} else {
err = -ENOENT;
}
spin_unlock_irqrestore(&ofdpa->neigh_tbl_lock, lock_flags);
if (!adding)
ofdpa_kfree(trans, entry);
if (err)
return err;
/* Resolved means neigh ip_addr is resolved to neigh mac. */
if (!resolved)
err = ofdpa_port_ipv4_resolve(ofdpa_port, trans, ip_addr);
return err;
}
static struct ofdpa_port *ofdpa_port_get(const struct ofdpa *ofdpa,
int port_index)
{
struct rocker_port *rocker_port;
rocker_port = ofdpa->rocker->ports[port_index];
return rocker_port ? rocker_port->wpriv : NULL;
}
static int ofdpa_port_vlan_flood_group(struct ofdpa_port *ofdpa_port,
struct switchdev_trans *trans,
int flags, __be16 vlan_id)
{
struct ofdpa_port *p;
const struct ofdpa *ofdpa = ofdpa_port->ofdpa;
unsigned int port_count = ofdpa->rocker->port_count;
u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
u32 *group_ids;
u8 group_count = 0;
int err = 0;
int i;
group_ids = ofdpa_kcalloc(trans, flags, port_count, sizeof(u32));
if (!group_ids)
return -ENOMEM;
/* Adjust the flood group for this VLAN. The flood group
* references an L2 interface group for each port in this
* VLAN.
*/
for (i = 0; i < port_count; i++) {
p = ofdpa_port_get(ofdpa, i);
if (!p)
continue;
if (!ofdpa_port_is_bridged(p))
continue;
if (test_bit(ntohs(vlan_id), p->vlan_bitmap)) {
group_ids[group_count++] =
ROCKER_GROUP_L2_INTERFACE(vlan_id, p->pport);
}
}
/* If there are no bridged ports in this VLAN, we're done */
if (group_count == 0)
goto no_ports_in_vlan;
err = ofdpa_group_l2_flood(ofdpa_port, trans, flags, vlan_id,
group_count, group_ids, group_id);
if (err)
netdev_err(ofdpa_port->dev, "Error (%d) port VLAN l2 flood group\n", err);
no_ports_in_vlan:
ofdpa_kfree(trans, group_ids);
return err;
}
static int ofdpa_port_vlan_l2_groups(struct ofdpa_port *ofdpa_port,
struct switchdev_trans *trans, int flags,
__be16 vlan_id, bool pop_vlan)
{
const struct ofdpa *ofdpa = ofdpa_port->ofdpa;
unsigned int port_count = ofdpa->rocker->port_count;
struct ofdpa_port *p;
bool adding = !(flags & OFDPA_OP_FLAG_REMOVE);
u32 out_pport;
int ref = 0;
int err;
int i;
/* An L2 interface group for this port in this VLAN, but
* only when port STP state is LEARNING|FORWARDING.
*/
if (ofdpa_port->stp_state == BR_STATE_LEARNING ||
ofdpa_port->stp_state == BR_STATE_FORWARDING) {
out_pport = ofdpa_port->pport;
err = ofdpa_group_l2_interface(ofdpa_port, trans, flags,
vlan_id, out_pport, pop_vlan);
if (err) {
netdev_err(ofdpa_port->dev, "Error (%d) port VLAN l2 group for pport %d\n",
err, out_pport);
return err;
}
}
/* An L2 interface group for this VLAN to CPU port.
* Add when first port joins this VLAN and destroy when
* last port leaves this VLAN.
*/
for (i = 0; i < port_count; i++) {
p = ofdpa_port_get(ofdpa, i);
if (p && test_bit(ntohs(vlan_id), p->vlan_bitmap))
ref++;
}
if ((!adding || ref != 1) && (adding || ref != 0))
return 0;
out_pport = 0;
err = ofdpa_group_l2_interface(ofdpa_port, trans, flags,
vlan_id, out_pport, pop_vlan);
if (err) {
netdev_err(ofdpa_port->dev, "Error (%d) port VLAN l2 group for CPU port\n", err);
return err;
}
return 0;
}
static struct ofdpa_ctrl {
const u8 *eth_dst;
const u8 *eth_dst_mask;
__be16 eth_type;
bool acl;
bool bridge;
bool term;
bool copy_to_cpu;
} ofdpa_ctrls[] = {
[OFDPA_CTRL_LINK_LOCAL_MCAST] = {
/* pass link local multicast pkts up to CPU for filtering */
.eth_dst = ll_mac,
.eth_dst_mask = ll_mask,
.acl = true,
},
[OFDPA_CTRL_LOCAL_ARP] = {
/* pass local ARP pkts up to CPU */
.eth_dst = zero_mac,
.eth_dst_mask = zero_mac,
.eth_type = htons(ETH_P_ARP),
.acl = true,
},
[OFDPA_CTRL_IPV4_MCAST] = {
/* pass IPv4 mcast pkts up to CPU, RFC 1112 */
.eth_dst = ipv4_mcast,
.eth_dst_mask = ipv4_mask,
.eth_type = htons(ETH_P_IP),
.term = true,
.copy_to_cpu = true,
},
[OFDPA_CTRL_IPV6_MCAST] = {
/* pass IPv6 mcast pkts up to CPU, RFC 2464 */
.eth_dst = ipv6_mcast,
.eth_dst_mask = ipv6_mask,
.eth_type = htons(ETH_P_IPV6),
.term = true,
.copy_to_cpu = true,
},
[OFDPA_CTRL_DFLT_BRIDGING] = {
/* flood any pkts on vlan */
.bridge = true,
.copy_to_cpu = true,
},
[OFDPA_CTRL_DFLT_OVS] = {
/* pass all pkts up to CPU */
.eth_dst = zero_mac,
.eth_dst_mask = zero_mac,
.acl = true,
},
};
static int ofdpa_port_ctrl_vlan_acl(struct ofdpa_port *ofdpa_port,
struct switchdev_trans *trans, int flags,
const struct ofdpa_ctrl *ctrl, __be16 vlan_id)
{
u32 in_pport = ofdpa_port->pport;
u32 in_pport_mask = 0xffffffff;
u32 out_pport = 0;
const u8 *eth_src = NULL;
const u8 *eth_src_mask = NULL;
__be16 vlan_id_mask = htons(0xffff);
u8 ip_proto = 0;
u8 ip_proto_mask = 0;
u8 ip_tos = 0;
u8 ip_tos_mask = 0;
u32 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
int err;
err = ofdpa_flow_tbl_acl(ofdpa_port, trans, flags,
in_pport, in_pport_mask,
eth_src, eth_src_mask,
ctrl->eth_dst, ctrl->eth_dst_mask,
ctrl->eth_type,
vlan_id, vlan_id_mask,
ip_proto, ip_proto_mask,
ip_tos, ip_tos_mask,
group_id);
if (err)
netdev_err(ofdpa_port->dev, "Error (%d) ctrl ACL\n", err);
return err;
}
static int ofdpa_port_ctrl_vlan_bridge(struct ofdpa_port *ofdpa_port,
struct switchdev_trans *trans,
int flags,
const struct ofdpa_ctrl *ctrl,
__be16 vlan_id)
{
enum rocker_of_dpa_table_id goto_tbl =
ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
u32 tunnel_id = 0;
int err;
if (!ofdpa_port_is_bridged(ofdpa_port))
return 0;
err = ofdpa_flow_tbl_bridge(ofdpa_port, trans, flags,
ctrl->eth_dst, ctrl->eth_dst_mask,
vlan_id, tunnel_id,
goto_tbl, group_id, ctrl->copy_to_cpu);
if (err)
netdev_err(ofdpa_port->dev, "Error (%d) ctrl FLOOD\n", err);
return err;
}
static int ofdpa_port_ctrl_vlan_term(struct ofdpa_port *ofdpa_port,
struct switchdev_trans *trans, int flags,
const struct ofdpa_ctrl *ctrl, __be16 vlan_id)
{
u32 in_pport_mask = 0xffffffff;
__be16 vlan_id_mask = htons(0xffff);
int err;
if (ntohs(vlan_id) == 0)
vlan_id = ofdpa_port->internal_vlan_id;
err = ofdpa_flow_tbl_term_mac(ofdpa_port, trans,
ofdpa_port->pport, in_pport_mask,
ctrl->eth_type, ctrl->eth_dst,
ctrl->eth_dst_mask, vlan_id,
vlan_id_mask, ctrl->copy_to_cpu,
flags);
if (err)
netdev_err(ofdpa_port->dev, "Error (%d) ctrl term\n", err);
return err;
}
static int ofdpa_port_ctrl_vlan(struct ofdpa_port *ofdpa_port,
struct switchdev_trans *trans, int flags,
const struct ofdpa_ctrl *ctrl, __be16 vlan_id)
{
if (ctrl->acl)
return ofdpa_port_ctrl_vlan_acl(ofdpa_port, trans, flags,
ctrl, vlan_id);
if (ctrl->bridge)
return ofdpa_port_ctrl_vlan_bridge(ofdpa_port, trans, flags,
ctrl, vlan_id);
if (ctrl->term)
return ofdpa_port_ctrl_vlan_term(ofdpa_port, trans, flags,
ctrl, vlan_id);
return -EOPNOTSUPP;
}
static int ofdpa_port_ctrl_vlan_add(struct ofdpa_port *ofdpa_port,
struct switchdev_trans *trans, int flags,
__be16 vlan_id)
{
int err = 0;
int i;
for (i = 0; i < OFDPA_CTRL_MAX; i++) {
if (ofdpa_port->ctrls[i]) {
err = ofdpa_port_ctrl_vlan(ofdpa_port, trans, flags,
&ofdpa_ctrls[i], vlan_id);
if (err)
return err;
}
}
return err;
}
static int ofdpa_port_ctrl(struct ofdpa_port *ofdpa_port,
struct switchdev_trans *trans, int flags,
const struct ofdpa_ctrl *ctrl)
{
u16 vid;
int err = 0;
for (vid = 1; vid < VLAN_N_VID; vid++) {
if (!test_bit(vid, ofdpa_port->vlan_bitmap))
continue;
err = ofdpa_port_ctrl_vlan(ofdpa_port, trans, flags,
ctrl, htons(vid));
if (err)
break;
}
return err;
}
static int ofdpa_port_vlan(struct ofdpa_port *ofdpa_port,
struct switchdev_trans *trans, int flags, u16 vid)
{
enum rocker_of_dpa_table_id goto_tbl =
ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
u32 in_pport = ofdpa_port->pport;
__be16 vlan_id = htons(vid);
__be16 vlan_id_mask = htons(0xffff);
__be16 internal_vlan_id;
bool untagged;
bool adding = !(flags & OFDPA_OP_FLAG_REMOVE);
int err;
internal_vlan_id = ofdpa_port_vid_to_vlan(ofdpa_port, vid, &untagged);
if (adding &&
test_bit(ntohs(internal_vlan_id), ofdpa_port->vlan_bitmap))
return 0; /* already added */
else if (!adding &&
!test_bit(ntohs(internal_vlan_id), ofdpa_port->vlan_bitmap))
return 0; /* already removed */
change_bit(ntohs(internal_vlan_id), ofdpa_port->vlan_bitmap);
if (adding) {
err = ofdpa_port_ctrl_vlan_add(ofdpa_port, trans, flags,
internal_vlan_id);
if (err) {
netdev_err(ofdpa_port->dev, "Error (%d) port ctrl vlan add\n", err);
goto err_out;
}
}
err = ofdpa_port_vlan_l2_groups(ofdpa_port, trans, flags,
internal_vlan_id, untagged);
if (err) {
netdev_err(ofdpa_port->dev, "Error (%d) port VLAN l2 groups\n", err);
goto err_out;
}
err = ofdpa_port_vlan_flood_group(ofdpa_port, trans, flags,
internal_vlan_id);
if (err) {
netdev_err(ofdpa_port->dev, "Error (%d) port VLAN l2 flood group\n", err);
goto err_out;
}
err = ofdpa_flow_tbl_vlan(ofdpa_port, trans, flags,
in_pport, vlan_id, vlan_id_mask,
goto_tbl, untagged, internal_vlan_id);
if (err)
netdev_err(ofdpa_port->dev, "Error (%d) port VLAN table\n", err);
err_out:
if (switchdev_trans_ph_prepare(trans))
change_bit(ntohs(internal_vlan_id), ofdpa_port->vlan_bitmap);
return err;
}
static int ofdpa_port_ig_tbl(struct ofdpa_port *ofdpa_port,
struct switchdev_trans *trans, int flags)
{
enum rocker_of_dpa_table_id goto_tbl;
u32 in_pport;
u32 in_pport_mask;
int err;
/* Normal Ethernet Frames. Matches pkts from any local physical
* ports. Goto VLAN tbl.
*/
in_pport = 0;
in_pport_mask = 0xffff0000;
goto_tbl = ROCKER_OF_DPA_TABLE_ID_VLAN;
err = ofdpa_flow_tbl_ig_port(ofdpa_port, trans, flags,
in_pport, in_pport_mask,
goto_tbl);
if (err)
netdev_err(ofdpa_port->dev, "Error (%d) ingress port table entry\n", err);
return err;
}
struct ofdpa_fdb_learn_work {
struct work_struct work;
struct ofdpa_port *ofdpa_port;
struct switchdev_trans *trans;
int flags;
u8 addr[ETH_ALEN];
u16 vid;
};
static void ofdpa_port_fdb_learn_work(struct work_struct *work)
{
const struct ofdpa_fdb_learn_work *lw =
container_of(work, struct ofdpa_fdb_learn_work, work);
bool removing = (lw->flags & OFDPA_OP_FLAG_REMOVE);
bool learned = (lw->flags & OFDPA_OP_FLAG_LEARNED);
struct switchdev_notifier_fdb_info info;
info.addr = lw->addr;
info.vid = lw->vid;
rtnl_lock();
if (learned && removing)
call_switchdev_notifiers(SWITCHDEV_FDB_DEL_TO_BRIDGE,
lw->ofdpa_port->dev, &info.info);
else if (learned && !removing)
call_switchdev_notifiers(SWITCHDEV_FDB_ADD_TO_BRIDGE,
lw->ofdpa_port->dev, &info.info);
rtnl_unlock();
ofdpa_kfree(lw->trans, work);
}
static int ofdpa_port_fdb_learn(struct ofdpa_port *ofdpa_port,
struct switchdev_trans *trans, int flags,
const u8 *addr, __be16 vlan_id)
{
struct ofdpa_fdb_learn_work *lw;
enum rocker_of_dpa_table_id goto_tbl =
ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
u32 out_pport = ofdpa_port->pport;
u32 tunnel_id = 0;
u32 group_id = ROCKER_GROUP_NONE;
bool syncing = !!(ofdpa_port->brport_flags & BR_LEARNING_SYNC);
bool copy_to_cpu = false;
int err;
if (ofdpa_port_is_bridged(ofdpa_port))
group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
if (!(flags & OFDPA_OP_FLAG_REFRESH)) {
err = ofdpa_flow_tbl_bridge(ofdpa_port, trans, flags, addr,
NULL, vlan_id, tunnel_id, goto_tbl,
group_id, copy_to_cpu);
if (err)
return err;
}
if (!syncing)
return 0;
if (!ofdpa_port_is_bridged(ofdpa_port))
return 0;
lw = ofdpa_kzalloc(trans, flags, sizeof(*lw));
if (!lw)
return -ENOMEM;
INIT_WORK(&lw->work, ofdpa_port_fdb_learn_work);
lw->ofdpa_port = ofdpa_port;
lw->trans = trans;
lw->flags = flags;
ether_addr_copy(lw->addr, addr);
lw->vid = ofdpa_port_vlan_to_vid(ofdpa_port, vlan_id);
if (switchdev_trans_ph_prepare(trans))
ofdpa_kfree(trans, lw);
else
schedule_work(&lw->work);
return 0;
}
static struct ofdpa_fdb_tbl_entry *
ofdpa_fdb_tbl_find(const struct ofdpa *ofdpa,
const struct ofdpa_fdb_tbl_entry *match)
{
struct ofdpa_fdb_tbl_entry *found;
hash_for_each_possible(ofdpa->fdb_tbl, found, entry, match->key_crc32)
if (memcmp(&found->key, &match->key, sizeof(found->key)) == 0)
return found;
return NULL;
}
static int ofdpa_port_fdb(struct ofdpa_port *ofdpa_port,
struct switchdev_trans *trans,
const unsigned char *addr,
__be16 vlan_id, int flags)
{
struct ofdpa *ofdpa = ofdpa_port->ofdpa;
struct ofdpa_fdb_tbl_entry *fdb;
struct ofdpa_fdb_tbl_entry *found;
bool removing = (flags & OFDPA_OP_FLAG_REMOVE);
unsigned long lock_flags;
fdb = ofdpa_kzalloc(trans, flags, sizeof(*fdb));
if (!fdb)
return -ENOMEM;
fdb->learned = (flags & OFDPA_OP_FLAG_LEARNED);
fdb->touched = jiffies;
fdb->key.ofdpa_port = ofdpa_port;
ether_addr_copy(fdb->key.addr, addr);
fdb->key.vlan_id = vlan_id;
fdb->key_crc32 = crc32(~0, &fdb->key, sizeof(fdb->key));
spin_lock_irqsave(&ofdpa->fdb_tbl_lock, lock_flags);
found = ofdpa_fdb_tbl_find(ofdpa, fdb);
if (found) {
found->touched = jiffies;
if (removing) {
ofdpa_kfree(trans, fdb);
if (!switchdev_trans_ph_prepare(trans))
hash_del(&found->entry);
}
} else if (!removing) {
if (!switchdev_trans_ph_prepare(trans))
hash_add(ofdpa->fdb_tbl, &fdb->entry,
fdb->key_crc32);
}
spin_unlock_irqrestore(&ofdpa->fdb_tbl_lock, lock_flags);
/* Check if adding and already exists, or removing and can't find */
if (!found != !removing) {
ofdpa_kfree(trans, fdb);
if (!found && removing)
return 0;
/* Refreshing existing to update aging timers */
flags |= OFDPA_OP_FLAG_REFRESH;
}
return ofdpa_port_fdb_learn(ofdpa_port, trans, flags, addr, vlan_id);
}
static int ofdpa_port_fdb_flush(struct ofdpa_port *ofdpa_port,
struct switchdev_trans *trans, int flags)
{
struct ofdpa *ofdpa = ofdpa_port->ofdpa;
struct ofdpa_fdb_tbl_entry *found;
unsigned long lock_flags;
struct hlist_node *tmp;
int bkt;
int err = 0;
if (ofdpa_port->stp_state == BR_STATE_LEARNING ||
ofdpa_port->stp_state == BR_STATE_FORWARDING)
return 0;
flags |= OFDPA_OP_FLAG_NOWAIT | OFDPA_OP_FLAG_REMOVE;
spin_lock_irqsave(&ofdpa->fdb_tbl_lock, lock_flags);
hash_for_each_safe(ofdpa->fdb_tbl, bkt, tmp, found, entry) {
if (found->key.ofdpa_port != ofdpa_port)
continue;
if (!found->learned)
continue;
err = ofdpa_port_fdb_learn(ofdpa_port, trans, flags,
found->key.addr,
found->key.vlan_id);
if (err)
goto err_out;
if (!switchdev_trans_ph_prepare(trans))
hash_del(&found->entry);
}
err_out:
spin_unlock_irqrestore(&ofdpa->fdb_tbl_lock, lock_flags);
return err;
}
static void ofdpa_fdb_cleanup(unsigned long data)
{
struct ofdpa *ofdpa = (struct ofdpa *)data;
struct ofdpa_port *ofdpa_port;
struct ofdpa_fdb_tbl_entry *entry;
struct hlist_node *tmp;
unsigned long next_timer = jiffies + ofdpa->ageing_time;
unsigned long expires;
unsigned long lock_flags;
int flags = OFDPA_OP_FLAG_NOWAIT | OFDPA_OP_FLAG_REMOVE |
OFDPA_OP_FLAG_LEARNED;
int bkt;
spin_lock_irqsave(&ofdpa->fdb_tbl_lock, lock_flags);
hash_for_each_safe(ofdpa->fdb_tbl, bkt, tmp, entry, entry) {
if (!entry->learned)
continue;
ofdpa_port = entry->key.ofdpa_port;
expires = entry->touched + ofdpa_port->ageing_time;
if (time_before_eq(expires, jiffies)) {
ofdpa_port_fdb_learn(ofdpa_port, NULL,
flags, entry->key.addr,
entry->key.vlan_id);
hash_del(&entry->entry);
} else if (time_before(expires, next_timer)) {
next_timer = expires;
}
}
spin_unlock_irqrestore(&ofdpa->fdb_tbl_lock, lock_flags);
mod_timer(&ofdpa->fdb_cleanup_timer, round_jiffies_up(next_timer));
}
static int ofdpa_port_router_mac(struct ofdpa_port *ofdpa_port,
struct switchdev_trans *trans, int flags,
__be16 vlan_id)
{
u32 in_pport_mask = 0xffffffff;
__be16 eth_type;
const u8 *dst_mac_mask = ff_mac;
__be16 vlan_id_mask = htons(0xffff);
bool copy_to_cpu = false;
int err;
if (ntohs(vlan_id) == 0)
vlan_id = ofdpa_port->internal_vlan_id;
eth_type = htons(ETH_P_IP);
err = ofdpa_flow_tbl_term_mac(ofdpa_port, trans,
ofdpa_port->pport, in_pport_mask,
eth_type, ofdpa_port->dev->dev_addr,
dst_mac_mask, vlan_id, vlan_id_mask,
copy_to_cpu, flags);
if (err)
return err;
eth_type = htons(ETH_P_IPV6);
err = ofdpa_flow_tbl_term_mac(ofdpa_port, trans,
ofdpa_port->pport, in_pport_mask,
eth_type, ofdpa_port->dev->dev_addr,
dst_mac_mask, vlan_id, vlan_id_mask,
copy_to_cpu, flags);
return err;
}
static int ofdpa_port_fwding(struct ofdpa_port *ofdpa_port,
struct switchdev_trans *trans, int flags)
{
bool pop_vlan;
u32 out_pport;
__be16 vlan_id;
u16 vid;
int err;
/* Port will be forwarding-enabled if its STP state is LEARNING
* or FORWARDING. Traffic from CPU can still egress, regardless of
* port STP state. Use L2 interface group on port VLANs as a way
* to toggle port forwarding: if forwarding is disabled, L2
* interface group will not exist.
*/
if (ofdpa_port->stp_state != BR_STATE_LEARNING &&
ofdpa_port->stp_state != BR_STATE_FORWARDING)
flags |= OFDPA_OP_FLAG_REMOVE;
out_pport = ofdpa_port->pport;
for (vid = 1; vid < VLAN_N_VID; vid++) {
if (!test_bit(vid, ofdpa_port->vlan_bitmap))
continue;
vlan_id = htons(vid);
pop_vlan = ofdpa_vlan_id_is_internal(vlan_id);
err = ofdpa_group_l2_interface(ofdpa_port, trans, flags,
vlan_id, out_pport, pop_vlan);
if (err) {
netdev_err(ofdpa_port->dev, "Error (%d) port VLAN l2 group for pport %d\n",
err, out_pport);
return err;
}
}
return 0;
}
static int ofdpa_port_stp_update(struct ofdpa_port *ofdpa_port,
struct switchdev_trans *trans,
int flags, u8 state)
{
bool want[OFDPA_CTRL_MAX] = { 0, };
bool prev_ctrls[OFDPA_CTRL_MAX];
u8 prev_state;
int err;
int i;
prev_state = ofdpa_port->stp_state;
if (prev_state == state)
return 0;
memcpy(prev_ctrls, ofdpa_port->ctrls, sizeof(prev_ctrls));
ofdpa_port->stp_state = state;
switch (state) {
case BR_STATE_DISABLED:
/* port is completely disabled */
break;
case BR_STATE_LISTENING:
case BR_STATE_BLOCKING:
want[OFDPA_CTRL_LINK_LOCAL_MCAST] = true;
break;
case BR_STATE_LEARNING:
case BR_STATE_FORWARDING:
if (!ofdpa_port_is_ovsed(ofdpa_port))
want[OFDPA_CTRL_LINK_LOCAL_MCAST] = true;
want[OFDPA_CTRL_IPV4_MCAST] = true;
want[OFDPA_CTRL_IPV6_MCAST] = true;
if (ofdpa_port_is_bridged(ofdpa_port))
want[OFDPA_CTRL_DFLT_BRIDGING] = true;
else if (ofdpa_port_is_ovsed(ofdpa_port))
want[OFDPA_CTRL_DFLT_OVS] = true;
else
want[OFDPA_CTRL_LOCAL_ARP] = true;
break;
}
for (i = 0; i < OFDPA_CTRL_MAX; i++) {
if (want[i] != ofdpa_port->ctrls[i]) {
int ctrl_flags = flags |
(want[i] ? 0 : OFDPA_OP_FLAG_REMOVE);
err = ofdpa_port_ctrl(ofdpa_port, trans, ctrl_flags,
&ofdpa_ctrls[i]);
if (err)
goto err_out;
ofdpa_port->ctrls[i] = want[i];
}
}
err = ofdpa_port_fdb_flush(ofdpa_port, trans, flags);
if (err)
goto err_out;
err = ofdpa_port_fwding(ofdpa_port, trans, flags);
err_out:
if (switchdev_trans_ph_prepare(trans)) {
memcpy(ofdpa_port->ctrls, prev_ctrls, sizeof(prev_ctrls));
ofdpa_port->stp_state = prev_state;
}
return err;
}
static int ofdpa_port_fwd_enable(struct ofdpa_port *ofdpa_port, int flags)
{
if (ofdpa_port_is_bridged(ofdpa_port))
/* bridge STP will enable port */
return 0;
/* port is not bridged, so simulate going to FORWARDING state */
return ofdpa_port_stp_update(ofdpa_port, NULL, flags,
BR_STATE_FORWARDING);
}
static int ofdpa_port_fwd_disable(struct ofdpa_port *ofdpa_port, int flags)
{
if (ofdpa_port_is_bridged(ofdpa_port))
/* bridge STP will disable port */
return 0;
/* port is not bridged, so simulate going to DISABLED state */
return ofdpa_port_stp_update(ofdpa_port, NULL, flags,
BR_STATE_DISABLED);
}
static int ofdpa_port_vlan_add(struct ofdpa_port *ofdpa_port,
struct switchdev_trans *trans,
u16 vid, u16 flags)
{
int err;
/* XXX deal with flags for PVID and untagged */
err = ofdpa_port_vlan(ofdpa_port, trans, 0, vid);
if (err)
return err;
err = ofdpa_port_router_mac(ofdpa_port, trans, 0, htons(vid));
if (err)
ofdpa_port_vlan(ofdpa_port, trans,
OFDPA_OP_FLAG_REMOVE, vid);
return err;
}
static int ofdpa_port_vlan_del(struct ofdpa_port *ofdpa_port,
u16 vid, u16 flags)
{
int err;
err = ofdpa_port_router_mac(ofdpa_port, NULL,
OFDPA_OP_FLAG_REMOVE, htons(vid));
if (err)
return err;
return ofdpa_port_vlan(ofdpa_port, NULL,
OFDPA_OP_FLAG_REMOVE, vid);
}
static struct ofdpa_internal_vlan_tbl_entry *
ofdpa_internal_vlan_tbl_find(const struct ofdpa *ofdpa, int ifindex)
{
struct ofdpa_internal_vlan_tbl_entry *found;
hash_for_each_possible(ofdpa->internal_vlan_tbl, found,
entry, ifindex) {
if (found->ifindex == ifindex)
return found;
}
return NULL;
}
static __be16 ofdpa_port_internal_vlan_id_get(struct ofdpa_port *ofdpa_port,
int ifindex)
{
struct ofdpa *ofdpa = ofdpa_port->ofdpa;
struct ofdpa_internal_vlan_tbl_entry *entry;
struct ofdpa_internal_vlan_tbl_entry *found;
unsigned long lock_flags;
int i;
entry = kzalloc(sizeof(*entry), GFP_KERNEL);
if (!entry)
return 0;
entry->ifindex = ifindex;
spin_lock_irqsave(&ofdpa->internal_vlan_tbl_lock, lock_flags);
found = ofdpa_internal_vlan_tbl_find(ofdpa, ifindex);
if (found) {
kfree(entry);
goto found;
}
found = entry;
hash_add(ofdpa->internal_vlan_tbl, &found->entry, found->ifindex);
for (i = 0; i < OFDPA_N_INTERNAL_VLANS; i++) {
if (test_and_set_bit(i, ofdpa->internal_vlan_bitmap))
continue;
found->vlan_id = htons(OFDPA_INTERNAL_VLAN_ID_BASE + i);
goto found;
}
netdev_err(ofdpa_port->dev, "Out of internal VLAN IDs\n");
found:
found->ref_count++;
spin_unlock_irqrestore(&ofdpa->internal_vlan_tbl_lock, lock_flags);
return found->vlan_id;
}
static int ofdpa_port_fib_ipv4(struct ofdpa_port *ofdpa_port,
struct switchdev_trans *trans, __be32 dst,
int dst_len, struct fib_info *fi,
u32 tb_id, int flags)
{
const struct fib_nh *nh;
__be16 eth_type = htons(ETH_P_IP);
__be32 dst_mask = inet_make_mask(dst_len);
__be16 internal_vlan_id = ofdpa_port->internal_vlan_id;
u32 priority = fi->fib_priority;
enum rocker_of_dpa_table_id goto_tbl =
ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
u32 group_id;
bool nh_on_port;
bool has_gw;
u32 index;
int err;
/* XXX support ECMP */
nh = fi->fib_nh;
nh_on_port = (fi->fib_dev == ofdpa_port->dev);
has_gw = !!nh->nh_gw;
if (has_gw && nh_on_port) {
err = ofdpa_port_ipv4_nh(ofdpa_port, trans, flags,
nh->nh_gw, &index);
if (err)
return err;
group_id = ROCKER_GROUP_L3_UNICAST(index);
} else {
/* Send to CPU for processing */
group_id = ROCKER_GROUP_L2_INTERFACE(internal_vlan_id, 0);
}
err = ofdpa_flow_tbl_ucast4_routing(ofdpa_port, trans, eth_type, dst,
dst_mask, priority, goto_tbl,
group_id, fi, flags);
if (err)
netdev_err(ofdpa_port->dev, "Error (%d) IPv4 route %pI4\n",
err, &dst);
return err;
}
static void
ofdpa_port_internal_vlan_id_put(const struct ofdpa_port *ofdpa_port,
int ifindex)
{
struct ofdpa *ofdpa = ofdpa_port->ofdpa;
struct ofdpa_internal_vlan_tbl_entry *found;
unsigned long lock_flags;
unsigned long bit;
spin_lock_irqsave(&ofdpa->internal_vlan_tbl_lock, lock_flags);
found = ofdpa_internal_vlan_tbl_find(ofdpa, ifindex);
if (!found) {
netdev_err(ofdpa_port->dev,
"ifindex (%d) not found in internal VLAN tbl\n",
ifindex);
goto not_found;
}
if (--found->ref_count <= 0) {
bit = ntohs(found->vlan_id) - OFDPA_INTERNAL_VLAN_ID_BASE;
clear_bit(bit, ofdpa->internal_vlan_bitmap);
hash_del(&found->entry);
kfree(found);
}
not_found:
spin_unlock_irqrestore(&ofdpa->internal_vlan_tbl_lock, lock_flags);
}
/**********************************
* Rocker world ops implementation
**********************************/
static int ofdpa_init(struct rocker *rocker)
{
struct ofdpa *ofdpa = rocker->wpriv;
ofdpa->rocker = rocker;
hash_init(ofdpa->flow_tbl);
spin_lock_init(&ofdpa->flow_tbl_lock);
hash_init(ofdpa->group_tbl);
spin_lock_init(&ofdpa->group_tbl_lock);
hash_init(ofdpa->fdb_tbl);
spin_lock_init(&ofdpa->fdb_tbl_lock);
hash_init(ofdpa->internal_vlan_tbl);
spin_lock_init(&ofdpa->internal_vlan_tbl_lock);
hash_init(ofdpa->neigh_tbl);
spin_lock_init(&ofdpa->neigh_tbl_lock);
setup_timer(&ofdpa->fdb_cleanup_timer, ofdpa_fdb_cleanup,
(unsigned long) ofdpa);
mod_timer(&ofdpa->fdb_cleanup_timer, jiffies);
ofdpa->ageing_time = BR_DEFAULT_AGEING_TIME;
return 0;
}
static void ofdpa_fini(struct rocker *rocker)
{
struct ofdpa *ofdpa = rocker->wpriv;
unsigned long flags;
struct ofdpa_flow_tbl_entry *flow_entry;
struct ofdpa_group_tbl_entry *group_entry;
struct ofdpa_fdb_tbl_entry *fdb_entry;
struct ofdpa_internal_vlan_tbl_entry *internal_vlan_entry;
struct ofdpa_neigh_tbl_entry *neigh_entry;
struct hlist_node *tmp;
int bkt;
del_timer_sync(&ofdpa->fdb_cleanup_timer);
flush_workqueue(rocker->rocker_owq);
spin_lock_irqsave(&ofdpa->flow_tbl_lock, flags);
hash_for_each_safe(ofdpa->flow_tbl, bkt, tmp, flow_entry, entry)
hash_del(&flow_entry->entry);
spin_unlock_irqrestore(&ofdpa->flow_tbl_lock, flags);
spin_lock_irqsave(&ofdpa->group_tbl_lock, flags);
hash_for_each_safe(ofdpa->group_tbl, bkt, tmp, group_entry, entry)
hash_del(&group_entry->entry);
spin_unlock_irqrestore(&ofdpa->group_tbl_lock, flags);
spin_lock_irqsave(&ofdpa->fdb_tbl_lock, flags);
hash_for_each_safe(ofdpa->fdb_tbl, bkt, tmp, fdb_entry, entry)
hash_del(&fdb_entry->entry);
spin_unlock_irqrestore(&ofdpa->fdb_tbl_lock, flags);
spin_lock_irqsave(&ofdpa->internal_vlan_tbl_lock, flags);
hash_for_each_safe(ofdpa->internal_vlan_tbl, bkt,
tmp, internal_vlan_entry, entry)
hash_del(&internal_vlan_entry->entry);
spin_unlock_irqrestore(&ofdpa->internal_vlan_tbl_lock, flags);
spin_lock_irqsave(&ofdpa->neigh_tbl_lock, flags);
hash_for_each_safe(ofdpa->neigh_tbl, bkt, tmp, neigh_entry, entry)
hash_del(&neigh_entry->entry);
spin_unlock_irqrestore(&ofdpa->neigh_tbl_lock, flags);
}
static int ofdpa_port_pre_init(struct rocker_port *rocker_port)
{
struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
ofdpa_port->ofdpa = rocker_port->rocker->wpriv;
ofdpa_port->rocker_port = rocker_port;
ofdpa_port->dev = rocker_port->dev;
ofdpa_port->pport = rocker_port->pport;
ofdpa_port->brport_flags = BR_LEARNING | BR_LEARNING_SYNC;
ofdpa_port->ageing_time = BR_DEFAULT_AGEING_TIME;
return 0;
}
static int ofdpa_port_init(struct rocker_port *rocker_port)
{
struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
int err;
rocker_port_set_learning(rocker_port,
!!(ofdpa_port->brport_flags & BR_LEARNING));
err = ofdpa_port_ig_tbl(ofdpa_port, NULL, 0);
if (err) {
netdev_err(ofdpa_port->dev, "install ig port table failed\n");
return err;
}
ofdpa_port->internal_vlan_id =
ofdpa_port_internal_vlan_id_get(ofdpa_port,
ofdpa_port->dev->ifindex);
err = ofdpa_port_vlan_add(ofdpa_port, NULL, OFDPA_UNTAGGED_VID, 0);
if (err) {
netdev_err(ofdpa_port->dev, "install untagged VLAN failed\n");
goto err_untagged_vlan;
}
return 0;
err_untagged_vlan:
ofdpa_port_ig_tbl(ofdpa_port, NULL, OFDPA_OP_FLAG_REMOVE);
return err;
}
static void ofdpa_port_fini(struct rocker_port *rocker_port)
{
struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
ofdpa_port_ig_tbl(ofdpa_port, NULL, OFDPA_OP_FLAG_REMOVE);
}
static int ofdpa_port_open(struct rocker_port *rocker_port)
{
struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
return ofdpa_port_fwd_enable(ofdpa_port, 0);
}
static void ofdpa_port_stop(struct rocker_port *rocker_port)
{
struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
ofdpa_port_fwd_disable(ofdpa_port, OFDPA_OP_FLAG_NOWAIT);
}
static int ofdpa_port_attr_stp_state_set(struct rocker_port *rocker_port,
u8 state,
struct switchdev_trans *trans)
{
struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
return ofdpa_port_stp_update(ofdpa_port, trans, 0, state);
}
static int ofdpa_port_attr_bridge_flags_set(struct rocker_port *rocker_port,
unsigned long brport_flags,
struct switchdev_trans *trans)
{
struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
unsigned long orig_flags;
int err = 0;
orig_flags = ofdpa_port->brport_flags;
ofdpa_port->brport_flags = brport_flags;
if ((orig_flags ^ ofdpa_port->brport_flags) & BR_LEARNING &&
!switchdev_trans_ph_prepare(trans))
err = rocker_port_set_learning(ofdpa_port->rocker_port,
!!(ofdpa_port->brport_flags & BR_LEARNING));
if (switchdev_trans_ph_prepare(trans))
ofdpa_port->brport_flags = orig_flags;
return err;
}
static int
ofdpa_port_attr_bridge_flags_get(const struct rocker_port *rocker_port,
unsigned long *p_brport_flags)
{
const struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
*p_brport_flags = ofdpa_port->brport_flags;
return 0;
}
static int
ofdpa_port_attr_bridge_ageing_time_set(struct rocker_port *rocker_port,
u32 ageing_time,
struct switchdev_trans *trans)
{
struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
struct ofdpa *ofdpa = ofdpa_port->ofdpa;
if (!switchdev_trans_ph_prepare(trans)) {
ofdpa_port->ageing_time = clock_t_to_jiffies(ageing_time);
if (ofdpa_port->ageing_time < ofdpa->ageing_time)
ofdpa->ageing_time = ofdpa_port->ageing_time;
mod_timer(&ofdpa_port->ofdpa->fdb_cleanup_timer, jiffies);
}
return 0;
}
static int ofdpa_port_obj_vlan_add(struct rocker_port *rocker_port,
const struct switchdev_obj_port_vlan *vlan,
struct switchdev_trans *trans)
{
struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
u16 vid;
int err;
for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
err = ofdpa_port_vlan_add(ofdpa_port, trans, vid, vlan->flags);
if (err)
return err;
}
return 0;
}
static int ofdpa_port_obj_vlan_del(struct rocker_port *rocker_port,
const struct switchdev_obj_port_vlan *vlan)
{
struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
u16 vid;
int err;
for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
err = ofdpa_port_vlan_del(ofdpa_port, vid, vlan->flags);
if (err)
return err;
}
return 0;
}
static int ofdpa_port_obj_vlan_dump(const struct rocker_port *rocker_port,
struct switchdev_obj_port_vlan *vlan,
switchdev_obj_dump_cb_t *cb)
{
const struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
u16 vid;
int err = 0;
for (vid = 1; vid < VLAN_N_VID; vid++) {
if (!test_bit(vid, ofdpa_port->vlan_bitmap))
continue;
vlan->flags = 0;
if (ofdpa_vlan_id_is_internal(htons(vid)))
vlan->flags |= BRIDGE_VLAN_INFO_PVID;
vlan->vid_begin = vlan->vid_end = vid;
err = cb(&vlan->obj);
if (err)
break;
}
return err;
}
static int ofdpa_port_obj_fdb_add(struct rocker_port *rocker_port,
const struct switchdev_obj_port_fdb *fdb,
struct switchdev_trans *trans)
{
struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
__be16 vlan_id = ofdpa_port_vid_to_vlan(ofdpa_port, fdb->vid, NULL);
if (!ofdpa_port_is_bridged(ofdpa_port))
return -EINVAL;
return ofdpa_port_fdb(ofdpa_port, trans, fdb->addr, vlan_id, 0);
}
static int ofdpa_port_obj_fdb_del(struct rocker_port *rocker_port,
const struct switchdev_obj_port_fdb *fdb)
{
struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
__be16 vlan_id = ofdpa_port_vid_to_vlan(ofdpa_port, fdb->vid, NULL);
int flags = OFDPA_OP_FLAG_REMOVE;
if (!ofdpa_port_is_bridged(ofdpa_port))
return -EINVAL;
return ofdpa_port_fdb(ofdpa_port, NULL, fdb->addr, vlan_id, flags);
}
static int ofdpa_port_obj_fdb_dump(const struct rocker_port *rocker_port,
struct switchdev_obj_port_fdb *fdb,
switchdev_obj_dump_cb_t *cb)
{
const struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
struct ofdpa *ofdpa = ofdpa_port->ofdpa;
struct ofdpa_fdb_tbl_entry *found;
struct hlist_node *tmp;
unsigned long lock_flags;
int bkt;
int err = 0;
spin_lock_irqsave(&ofdpa->fdb_tbl_lock, lock_flags);
hash_for_each_safe(ofdpa->fdb_tbl, bkt, tmp, found, entry) {
if (found->key.ofdpa_port != ofdpa_port)
continue;
ether_addr_copy(fdb->addr, found->key.addr);
fdb->ndm_state = NUD_REACHABLE;
fdb->vid = ofdpa_port_vlan_to_vid(ofdpa_port,
found->key.vlan_id);
err = cb(&fdb->obj);
if (err)
break;
}
spin_unlock_irqrestore(&ofdpa->fdb_tbl_lock, lock_flags);
return err;
}
static int ofdpa_port_bridge_join(struct ofdpa_port *ofdpa_port,
struct net_device *bridge)
{
int err;
/* Port is joining bridge, so the internal VLAN for the
* port is going to change to the bridge internal VLAN.
* Let's remove untagged VLAN (vid=0) from port and
* re-add once internal VLAN has changed.
*/
err = ofdpa_port_vlan_del(ofdpa_port, OFDPA_UNTAGGED_VID, 0);
if (err)
return err;
ofdpa_port_internal_vlan_id_put(ofdpa_port,
ofdpa_port->dev->ifindex);
ofdpa_port->internal_vlan_id =
ofdpa_port_internal_vlan_id_get(ofdpa_port, bridge->ifindex);
ofdpa_port->bridge_dev = bridge;
return ofdpa_port_vlan_add(ofdpa_port, NULL, OFDPA_UNTAGGED_VID, 0);
}
static int ofdpa_port_bridge_leave(struct ofdpa_port *ofdpa_port)
{
int err;
err = ofdpa_port_vlan_del(ofdpa_port, OFDPA_UNTAGGED_VID, 0);
if (err)
return err;
ofdpa_port_internal_vlan_id_put(ofdpa_port,
ofdpa_port->bridge_dev->ifindex);
ofdpa_port->internal_vlan_id =
ofdpa_port_internal_vlan_id_get(ofdpa_port,
ofdpa_port->dev->ifindex);
ofdpa_port->bridge_dev = NULL;
err = ofdpa_port_vlan_add(ofdpa_port, NULL, OFDPA_UNTAGGED_VID, 0);
if (err)
return err;
if (ofdpa_port->dev->flags & IFF_UP)
err = ofdpa_port_fwd_enable(ofdpa_port, 0);
return err;
}
static int ofdpa_port_ovs_changed(struct ofdpa_port *ofdpa_port,
struct net_device *master)
{
int err;
ofdpa_port->bridge_dev = master;
err = ofdpa_port_fwd_disable(ofdpa_port, 0);
if (err)
return err;
err = ofdpa_port_fwd_enable(ofdpa_port, 0);
return err;
}
static int ofdpa_port_master_linked(struct rocker_port *rocker_port,
struct net_device *master)
{
struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
int err = 0;
if (netif_is_bridge_master(master))
err = ofdpa_port_bridge_join(ofdpa_port, master);
else if (netif_is_ovs_master(master))
err = ofdpa_port_ovs_changed(ofdpa_port, master);
return err;
}
static int ofdpa_port_master_unlinked(struct rocker_port *rocker_port,
struct net_device *master)
{
struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
int err = 0;
if (ofdpa_port_is_bridged(ofdpa_port))
err = ofdpa_port_bridge_leave(ofdpa_port);
else if (ofdpa_port_is_ovsed(ofdpa_port))
err = ofdpa_port_ovs_changed(ofdpa_port, NULL);
return err;
}
static int ofdpa_port_neigh_update(struct rocker_port *rocker_port,
struct neighbour *n)
{
struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
int flags = (n->nud_state & NUD_VALID ? 0 : OFDPA_OP_FLAG_REMOVE) |
OFDPA_OP_FLAG_NOWAIT;
__be32 ip_addr = *(__be32 *) n->primary_key;
return ofdpa_port_ipv4_neigh(ofdpa_port, NULL, flags, ip_addr, n->ha);
}
static int ofdpa_port_neigh_destroy(struct rocker_port *rocker_port,
struct neighbour *n)
{
struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
int flags = OFDPA_OP_FLAG_REMOVE | OFDPA_OP_FLAG_NOWAIT;
__be32 ip_addr = *(__be32 *) n->primary_key;
return ofdpa_port_ipv4_neigh(ofdpa_port, NULL, flags, ip_addr, n->ha);
}
static int ofdpa_port_ev_mac_vlan_seen(struct rocker_port *rocker_port,
const unsigned char *addr,
__be16 vlan_id)
{
struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
int flags = OFDPA_OP_FLAG_NOWAIT | OFDPA_OP_FLAG_LEARNED;
if (ofdpa_port->stp_state != BR_STATE_LEARNING &&
ofdpa_port->stp_state != BR_STATE_FORWARDING)
return 0;
return ofdpa_port_fdb(ofdpa_port, NULL, addr, vlan_id, flags);
}
static struct ofdpa_port *ofdpa_port_dev_lower_find(struct net_device *dev,
struct rocker *rocker)
{
struct rocker_port *rocker_port;
rocker_port = rocker_port_dev_lower_find(dev, rocker);
return rocker_port ? rocker_port->wpriv : NULL;
}
static int ofdpa_fib4_add(struct rocker *rocker,
const struct fib_entry_notifier_info *fen_info)
{
struct ofdpa *ofdpa = rocker->wpriv;
struct ofdpa_port *ofdpa_port;
int err;
if (ofdpa->fib_aborted)
return 0;
ofdpa_port = ofdpa_port_dev_lower_find(fen_info->fi->fib_dev, rocker);
if (!ofdpa_port)
return 0;
err = ofdpa_port_fib_ipv4(ofdpa_port, NULL, htonl(fen_info->dst),
fen_info->dst_len, fen_info->fi,
fen_info->tb_id, 0);
if (err)
return err;
fib_info_offload_inc(fen_info->fi);
return 0;
}
static int ofdpa_fib4_del(struct rocker *rocker,
const struct fib_entry_notifier_info *fen_info)
{
struct ofdpa *ofdpa = rocker->wpriv;
struct ofdpa_port *ofdpa_port;
if (ofdpa->fib_aborted)
return 0;
ofdpa_port = ofdpa_port_dev_lower_find(fen_info->fi->fib_dev, rocker);
if (!ofdpa_port)
return 0;
fib_info_offload_dec(fen_info->fi);
return ofdpa_port_fib_ipv4(ofdpa_port, NULL, htonl(fen_info->dst),
fen_info->dst_len, fen_info->fi,
fen_info->tb_id, OFDPA_OP_FLAG_REMOVE);
}
static void ofdpa_fib4_abort(struct rocker *rocker)
{
struct ofdpa *ofdpa = rocker->wpriv;
struct ofdpa_port *ofdpa_port;
struct ofdpa_flow_tbl_entry *flow_entry;
struct hlist_node *tmp;
unsigned long flags;
int bkt;
if (ofdpa->fib_aborted)
return;
spin_lock_irqsave(&ofdpa->flow_tbl_lock, flags);
hash_for_each_safe(ofdpa->flow_tbl, bkt, tmp, flow_entry, entry) {
if (flow_entry->key.tbl_id !=
ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING)
continue;
ofdpa_port = ofdpa_port_dev_lower_find(flow_entry->fi->fib_dev,
rocker);
if (!ofdpa_port)
continue;
fib_info_offload_dec(flow_entry->fi);
ofdpa_flow_tbl_del(ofdpa_port, NULL, OFDPA_OP_FLAG_REMOVE,
flow_entry);
}
spin_unlock_irqrestore(&ofdpa->flow_tbl_lock, flags);
ofdpa->fib_aborted = true;
}
struct rocker_world_ops rocker_ofdpa_ops = {
.kind = "ofdpa",
.priv_size = sizeof(struct ofdpa),
.port_priv_size = sizeof(struct ofdpa_port),
.mode = ROCKER_PORT_MODE_OF_DPA,
.init = ofdpa_init,
.fini = ofdpa_fini,
.port_pre_init = ofdpa_port_pre_init,
.port_init = ofdpa_port_init,
.port_fini = ofdpa_port_fini,
.port_open = ofdpa_port_open,
.port_stop = ofdpa_port_stop,
.port_attr_stp_state_set = ofdpa_port_attr_stp_state_set,
.port_attr_bridge_flags_set = ofdpa_port_attr_bridge_flags_set,
.port_attr_bridge_flags_get = ofdpa_port_attr_bridge_flags_get,
.port_attr_bridge_ageing_time_set = ofdpa_port_attr_bridge_ageing_time_set,
.port_obj_vlan_add = ofdpa_port_obj_vlan_add,
.port_obj_vlan_del = ofdpa_port_obj_vlan_del,
.port_obj_vlan_dump = ofdpa_port_obj_vlan_dump,
.port_obj_fdb_add = ofdpa_port_obj_fdb_add,
.port_obj_fdb_del = ofdpa_port_obj_fdb_del,
.port_obj_fdb_dump = ofdpa_port_obj_fdb_dump,
.port_master_linked = ofdpa_port_master_linked,
.port_master_unlinked = ofdpa_port_master_unlinked,
.port_neigh_update = ofdpa_port_neigh_update,
.port_neigh_destroy = ofdpa_port_neigh_destroy,
.port_ev_mac_vlan_seen = ofdpa_port_ev_mac_vlan_seen,
.fib4_add = ofdpa_fib4_add,
.fib4_del = ofdpa_fib4_del,
.fib4_abort = ofdpa_fib4_abort,
};
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