2005-04-16 22:20:36 +00:00
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/*
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* Linux ethernet bridge
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*
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* Authors:
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* Lennert Buytenhek <buytenh@gnu.org>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef _BR_PRIVATE_H
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#define _BR_PRIVATE_H
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#include <linux/netdevice.h>
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#include <linux/if_bridge.h>
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2010-06-10 16:12:50 +00:00
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#include <linux/netpoll.h>
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2010-06-23 20:00:48 +00:00
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#include <linux/u64_stats_sync.h>
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2008-07-30 23:27:55 +00:00
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#include <net/route.h>
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2015-05-30 13:30:16 +00:00
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#include <net/ip6_fib.h>
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2013-02-13 12:00:09 +00:00
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#include <linux/if_vlan.h>
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2005-04-16 22:20:36 +00:00
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#define BR_HASH_BITS 8
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#define BR_HASH_SIZE (1 << BR_HASH_BITS)
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#define BR_HOLD_TIME (1*HZ)
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#define BR_PORT_BITS 10
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#define BR_MAX_PORTS (1<<BR_PORT_BITS)
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2013-02-13 12:00:09 +00:00
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#define BR_VLAN_BITMAP_LEN BITS_TO_LONGS(VLAN_N_VID)
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2005-04-16 22:20:36 +00:00
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2007-03-21 21:22:44 +00:00
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#define BR_VERSION "2.3"
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2011-10-03 18:14:46 +00:00
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/* Control of forwarding link local multicast */
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#define BR_GROUPFWD_DEFAULT 0
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2015-05-04 20:47:13 +00:00
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/* Don't allow forwarding of control protocols like STP, MAC PAUSE and LACP */
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#define BR_GROUPFWD_RESTRICTED 0x0007u
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2014-06-10 11:59:24 +00:00
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/* The Nearest Customer Bridge Group Address, 01-80-C2-00-00-[00,0B,0C,0D,0F] */
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#define BR_GROUPFWD_8021AD 0xB801u
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2011-10-03 18:14:46 +00:00
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2007-03-21 21:22:44 +00:00
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/* Path to usermode spanning tree program */
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#define BR_STP_PROG "/sbin/bridge-stp"
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2005-12-22 03:01:30 +00:00
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2005-04-16 22:20:36 +00:00
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typedef struct bridge_id bridge_id;
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typedef struct mac_addr mac_addr;
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typedef __u16 port_id;
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struct bridge_id
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{
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unsigned char prio[2];
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2014-02-23 08:05:25 +00:00
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unsigned char addr[ETH_ALEN];
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2005-04-16 22:20:36 +00:00
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};
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struct mac_addr
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{
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2014-02-23 08:05:25 +00:00
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unsigned char addr[ETH_ALEN];
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2005-04-16 22:20:36 +00:00
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};
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2013-08-30 15:28:17 +00:00
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#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
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/* our own querier */
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2014-06-07 16:26:26 +00:00
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struct bridge_mcast_own_query {
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2013-08-30 15:28:17 +00:00
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struct timer_list timer;
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u32 startup_sent;
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};
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/* other querier */
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2014-06-07 16:26:26 +00:00
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struct bridge_mcast_other_query {
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2013-08-30 15:28:17 +00:00
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struct timer_list timer;
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unsigned long delay_time;
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};
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2014-06-07 16:26:27 +00:00
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/* selected querier */
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struct bridge_mcast_querier {
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struct br_ip addr;
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2014-06-07 16:26:29 +00:00
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struct net_bridge_port __rcu *port;
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2014-06-07 16:26:27 +00:00
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};
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2013-08-30 15:28:17 +00:00
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#endif
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2013-02-13 12:00:09 +00:00
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struct net_port_vlans {
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u16 port_idx;
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2013-02-13 12:00:14 +00:00
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u16 pvid;
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2013-02-13 12:00:09 +00:00
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union {
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struct net_bridge_port *port;
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struct net_bridge *br;
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} parent;
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struct rcu_head rcu;
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unsigned long vlan_bitmap[BR_VLAN_BITMAP_LEN];
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2013-02-13 12:00:20 +00:00
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unsigned long untagged_bitmap[BR_VLAN_BITMAP_LEN];
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2013-02-13 12:00:13 +00:00
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u16 num_vlans;
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2013-02-13 12:00:09 +00:00
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};
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2005-04-16 22:20:36 +00:00
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struct net_bridge_fdb_entry
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{
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struct hlist_node hlist;
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struct net_bridge_port *dst;
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2011-04-04 14:03:28 +00:00
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unsigned long updated;
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unsigned long used;
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2005-04-16 22:20:36 +00:00
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mac_addr addr;
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bridge: fdb: rearrange net_bridge_fdb_entry
While looking into fixing the local entries scalability issue I noticed
that the structure is badly arranged because vlan_id would fall in a
second cache line while keeping rcu which is used only when deleting
in the first, so re-arrange the structure and push rcu to the end so we
can get 16 bytes which can be used for other fields (by pushing rcu
fully in the second 64 byte chunk). With this change all the core
necessary information when doing fdb lookups will be available in a
single cache line.
pahole before (note vlan_id):
struct net_bridge_fdb_entry {
struct hlist_node hlist; /* 0 16 */
struct net_bridge_port * dst; /* 16 8 */
struct callback_head rcu; /* 24 16 */
long unsigned int updated; /* 40 8 */
long unsigned int used; /* 48 8 */
mac_addr addr; /* 56 6 */
unsigned char is_local:1; /* 62: 7 1 */
unsigned char is_static:1; /* 62: 6 1 */
unsigned char added_by_user:1; /* 62: 5 1 */
unsigned char added_by_external_learn:1; /* 62: 4 1 */
/* XXX 4 bits hole, try to pack */
/* XXX 1 byte hole, try to pack */
/* --- cacheline 1 boundary (64 bytes) --- */
__u16 vlan_id; /* 64 2 */
/* size: 72, cachelines: 2, members: 11 */
/* sum members: 65, holes: 1, sum holes: 1 */
/* bit holes: 1, sum bit holes: 4 bits */
/* padding: 6 */
/* last cacheline: 8 bytes */
}
pahole after (note vlan_id):
struct net_bridge_fdb_entry {
struct hlist_node hlist; /* 0 16 */
struct net_bridge_port * dst; /* 16 8 */
long unsigned int updated; /* 24 8 */
long unsigned int used; /* 32 8 */
mac_addr addr; /* 40 6 */
__u16 vlan_id; /* 46 2 */
unsigned char is_local:1; /* 48: 7 1 */
unsigned char is_static:1; /* 48: 6 1 */
unsigned char added_by_user:1; /* 48: 5 1 */
unsigned char added_by_external_learn:1; /* 48: 4 1 */
/* XXX 4 bits hole, try to pack */
/* XXX 7 bytes hole, try to pack */
struct callback_head rcu; /* 56 16 */
/* --- cacheline 1 boundary (64 bytes) was 8 bytes ago --- */
/* size: 72, cachelines: 2, members: 11 */
/* sum members: 65, holes: 1, sum holes: 7 */
/* bit holes: 1, sum bit holes: 4 bits */
/* last cacheline: 8 bytes */
}
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 21:19:20 +00:00
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__u16 vlan_id;
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2014-11-28 13:34:14 +00:00
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unsigned char is_local:1,
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is_static:1,
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2014-11-28 13:34:21 +00:00
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added_by_user:1,
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added_by_external_learn:1;
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bridge: fdb: rearrange net_bridge_fdb_entry
While looking into fixing the local entries scalability issue I noticed
that the structure is badly arranged because vlan_id would fall in a
second cache line while keeping rcu which is used only when deleting
in the first, so re-arrange the structure and push rcu to the end so we
can get 16 bytes which can be used for other fields (by pushing rcu
fully in the second 64 byte chunk). With this change all the core
necessary information when doing fdb lookups will be available in a
single cache line.
pahole before (note vlan_id):
struct net_bridge_fdb_entry {
struct hlist_node hlist; /* 0 16 */
struct net_bridge_port * dst; /* 16 8 */
struct callback_head rcu; /* 24 16 */
long unsigned int updated; /* 40 8 */
long unsigned int used; /* 48 8 */
mac_addr addr; /* 56 6 */
unsigned char is_local:1; /* 62: 7 1 */
unsigned char is_static:1; /* 62: 6 1 */
unsigned char added_by_user:1; /* 62: 5 1 */
unsigned char added_by_external_learn:1; /* 62: 4 1 */
/* XXX 4 bits hole, try to pack */
/* XXX 1 byte hole, try to pack */
/* --- cacheline 1 boundary (64 bytes) --- */
__u16 vlan_id; /* 64 2 */
/* size: 72, cachelines: 2, members: 11 */
/* sum members: 65, holes: 1, sum holes: 1 */
/* bit holes: 1, sum bit holes: 4 bits */
/* padding: 6 */
/* last cacheline: 8 bytes */
}
pahole after (note vlan_id):
struct net_bridge_fdb_entry {
struct hlist_node hlist; /* 0 16 */
struct net_bridge_port * dst; /* 16 8 */
long unsigned int updated; /* 24 8 */
long unsigned int used; /* 32 8 */
mac_addr addr; /* 40 6 */
__u16 vlan_id; /* 46 2 */
unsigned char is_local:1; /* 48: 7 1 */
unsigned char is_static:1; /* 48: 6 1 */
unsigned char added_by_user:1; /* 48: 5 1 */
unsigned char added_by_external_learn:1; /* 48: 4 1 */
/* XXX 4 bits hole, try to pack */
/* XXX 7 bytes hole, try to pack */
struct callback_head rcu; /* 56 16 */
/* --- cacheline 1 boundary (64 bytes) was 8 bytes ago --- */
/* size: 72, cachelines: 2, members: 11 */
/* sum members: 65, holes: 1, sum holes: 7 */
/* bit holes: 1, sum bit holes: 4 bits */
/* last cacheline: 8 bytes */
}
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-27 21:19:20 +00:00
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struct rcu_head rcu;
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2005-04-16 22:20:36 +00:00
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};
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2010-02-27 19:41:45 +00:00
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struct net_bridge_port_group {
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struct net_bridge_port *port;
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2010-11-15 06:38:10 +00:00
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struct net_bridge_port_group __rcu *next;
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2010-02-27 19:41:45 +00:00
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struct hlist_node mglist;
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struct rcu_head rcu;
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struct timer_list timer;
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2010-04-18 03:42:07 +00:00
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struct br_ip addr;
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2012-12-14 22:09:51 +00:00
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unsigned char state;
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2010-02-27 19:41:45 +00:00
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};
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struct net_bridge_mdb_entry
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{
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struct hlist_node hlist[2];
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struct net_bridge *br;
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2010-11-15 06:38:10 +00:00
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struct net_bridge_port_group __rcu *ports;
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2010-02-27 19:41:45 +00:00
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struct rcu_head rcu;
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struct timer_list timer;
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2010-04-18 03:42:07 +00:00
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struct br_ip addr;
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2011-02-12 09:05:42 +00:00
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bool mglist;
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2010-02-27 19:41:45 +00:00
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};
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struct net_bridge_mdb_htable
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{
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struct hlist_head *mhash;
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struct rcu_head rcu;
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struct net_bridge_mdb_htable *old;
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u32 size;
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u32 max;
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u32 secret;
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u32 ver;
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};
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2005-04-16 22:20:36 +00:00
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struct net_bridge_port
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{
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struct net_bridge *br;
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struct net_device *dev;
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struct list_head list;
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/* STP */
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u8 priority;
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u8 state;
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u16 port_no;
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unsigned char topology_change_ack;
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unsigned char config_pending;
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port_id port_id;
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port_id designated_port;
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bridge_id designated_root;
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bridge_id designated_bridge;
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u32 path_cost;
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u32 designated_cost;
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2011-07-22 07:47:06 +00:00
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unsigned long designated_age;
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2005-04-16 22:20:36 +00:00
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struct timer_list forward_delay_timer;
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struct timer_list hold_timer;
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struct timer_list message_age_timer;
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struct kobject kobj;
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struct rcu_head rcu;
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2009-08-13 06:55:16 +00:00
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unsigned long flags;
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2010-02-27 19:41:45 +00:00
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#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
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2014-06-07 16:26:26 +00:00
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struct bridge_mcast_own_query ip4_own_query;
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2013-08-30 15:28:17 +00:00
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#if IS_ENABLED(CONFIG_IPV6)
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2014-06-07 16:26:26 +00:00
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struct bridge_mcast_own_query ip6_own_query;
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2013-08-30 15:28:17 +00:00
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#endif /* IS_ENABLED(CONFIG_IPV6) */
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2010-02-27 19:41:45 +00:00
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unsigned char multicast_router;
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struct timer_list multicast_router_timer;
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struct hlist_head mglist;
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struct hlist_node rlist;
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#endif
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2010-05-10 09:31:11 +00:00
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#ifdef CONFIG_SYSFS
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char sysfs_name[IFNAMSIZ];
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#endif
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2010-06-10 16:12:50 +00:00
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#ifdef CONFIG_NET_POLL_CONTROLLER
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struct netpoll *np;
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#endif
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2013-02-13 12:00:09 +00:00
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#ifdef CONFIG_BRIDGE_VLAN_FILTERING
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struct net_port_vlans __rcu *vlan_info;
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#endif
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2005-04-16 22:20:36 +00:00
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};
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2014-05-16 13:59:16 +00:00
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#define br_auto_port(p) ((p)->flags & BR_AUTO_MASK)
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2014-05-16 13:59:18 +00:00
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#define br_promisc_port(p) ((p)->flags & BR_PROMISC)
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2014-05-16 13:59:16 +00:00
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2010-06-15 06:50:45 +00:00
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#define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT)
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2010-11-15 06:38:13 +00:00
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static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev)
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{
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2013-09-14 14:42:28 +00:00
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return rcu_dereference(dev->rx_handler_data);
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2010-11-15 06:38:13 +00:00
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}
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2013-09-14 14:42:27 +00:00
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static inline struct net_bridge_port *br_port_get_rtnl(const struct net_device *dev)
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2010-11-15 06:38:13 +00:00
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{
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2010-11-15 06:38:14 +00:00
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return br_port_exists(dev) ?
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rtnl_dereference(dev->rx_handler_data) : NULL;
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2010-11-15 06:38:13 +00:00
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}
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2005-04-16 22:20:36 +00:00
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struct net_bridge
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{
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spinlock_t lock;
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struct list_head port_list;
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struct net_device *dev;
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2010-03-02 13:32:09 +00:00
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2014-01-04 05:57:59 +00:00
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struct pcpu_sw_netstats __percpu *stats;
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2005-04-16 22:20:36 +00:00
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spinlock_t hash_lock;
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struct hlist_head hash[BR_HASH_SIZE];
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2014-09-18 09:29:03 +00:00
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#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
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2015-05-30 13:30:16 +00:00
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union {
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struct rtable fake_rtable;
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struct rt6_info fake_rt6_info;
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};
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2010-07-02 07:32:57 +00:00
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bool nf_call_iptables;
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bool nf_call_ip6tables;
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bool nf_call_arptables;
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2008-07-30 23:27:55 +00:00
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#endif
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2011-10-03 18:14:46 +00:00
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u16 group_fwd_mask;
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2014-06-10 11:59:24 +00:00
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u16 group_fwd_mask_required;
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2011-10-03 18:14:46 +00:00
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2005-04-16 22:20:36 +00:00
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/* STP */
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|
|
bridge_id designated_root;
|
|
|
|
|
bridge_id bridge_id;
|
|
|
|
|
u32 root_path_cost;
|
|
|
|
|
unsigned long max_age;
|
|
|
|
|
unsigned long hello_time;
|
|
|
|
|
unsigned long forward_delay;
|
|
|
|
|
unsigned long bridge_max_age;
|
|
|
|
|
unsigned long ageing_time;
|
|
|
|
|
unsigned long bridge_hello_time;
|
|
|
|
|
unsigned long bridge_forward_delay;
|
|
|
|
|
|
2006-03-21 06:59:21 +00:00
|
|
|
u8 group_addr[ETH_ALEN];
|
2014-06-10 11:59:25 +00:00
|
|
|
bool group_addr_set;
|
2005-04-16 22:20:36 +00:00
|
|
|
u16 root_port;
|
2007-03-21 21:22:44 +00:00
|
|
|
|
|
|
|
|
enum {
|
|
|
|
|
BR_NO_STP, /* no spanning tree */
|
|
|
|
|
BR_KERNEL_STP, /* old STP in kernel */
|
|
|
|
|
BR_USER_STP, /* new RSTP in userspace */
|
|
|
|
|
} stp_enabled;
|
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
unsigned char topology_change;
|
|
|
|
|
unsigned char topology_change_detected;
|
|
|
|
|
|
2010-02-27 19:41:45 +00:00
|
|
|
#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
|
|
|
|
|
unsigned char multicast_router;
|
|
|
|
|
|
|
|
|
|
u8 multicast_disabled:1;
|
2012-04-13 02:37:42 +00:00
|
|
|
u8 multicast_querier:1;
|
2013-05-21 21:52:54 +00:00
|
|
|
u8 multicast_query_use_ifaddr:1;
|
2010-02-27 19:41:45 +00:00
|
|
|
|
|
|
|
|
u32 hash_elasticity;
|
|
|
|
|
u32 hash_max;
|
|
|
|
|
|
|
|
|
|
u32 multicast_last_member_count;
|
|
|
|
|
u32 multicast_startup_query_count;
|
|
|
|
|
|
|
|
|
|
unsigned long multicast_last_member_interval;
|
|
|
|
|
unsigned long multicast_membership_interval;
|
|
|
|
|
unsigned long multicast_querier_interval;
|
|
|
|
|
unsigned long multicast_query_interval;
|
|
|
|
|
unsigned long multicast_query_response_interval;
|
|
|
|
|
unsigned long multicast_startup_query_interval;
|
|
|
|
|
|
|
|
|
|
spinlock_t multicast_lock;
|
2010-11-15 06:38:10 +00:00
|
|
|
struct net_bridge_mdb_htable __rcu *mdb;
|
2010-02-27 19:41:45 +00:00
|
|
|
struct hlist_head router_list;
|
|
|
|
|
|
|
|
|
|
struct timer_list multicast_router_timer;
|
2014-06-07 16:26:26 +00:00
|
|
|
struct bridge_mcast_other_query ip4_other_query;
|
|
|
|
|
struct bridge_mcast_own_query ip4_own_query;
|
2014-06-07 16:26:27 +00:00
|
|
|
struct bridge_mcast_querier ip4_querier;
|
2013-08-30 15:28:17 +00:00
|
|
|
#if IS_ENABLED(CONFIG_IPV6)
|
2014-06-07 16:26:26 +00:00
|
|
|
struct bridge_mcast_other_query ip6_other_query;
|
|
|
|
|
struct bridge_mcast_own_query ip6_own_query;
|
2014-06-07 16:26:27 +00:00
|
|
|
struct bridge_mcast_querier ip6_querier;
|
2013-08-30 15:28:17 +00:00
|
|
|
#endif /* IS_ENABLED(CONFIG_IPV6) */
|
2010-02-27 19:41:45 +00:00
|
|
|
#endif
|
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
struct timer_list hello_timer;
|
|
|
|
|
struct timer_list tcn_timer;
|
|
|
|
|
struct timer_list topology_change_timer;
|
|
|
|
|
struct timer_list gc_timer;
|
2007-12-17 19:54:39 +00:00
|
|
|
struct kobject *ifobj;
|
2014-05-16 13:59:16 +00:00
|
|
|
u32 auto_cnt;
|
2013-02-13 12:00:09 +00:00
|
|
|
#ifdef CONFIG_BRIDGE_VLAN_FILTERING
|
|
|
|
|
u8 vlan_enabled;
|
2014-06-10 11:59:23 +00:00
|
|
|
__be16 vlan_proto;
|
2014-10-03 15:29:16 +00:00
|
|
|
u16 default_pvid;
|
2013-02-13 12:00:09 +00:00
|
|
|
struct net_port_vlans __rcu *vlan_info;
|
|
|
|
|
#endif
|
2005-04-16 22:20:36 +00:00
|
|
|
};
|
|
|
|
|
|
2010-02-27 19:41:40 +00:00
|
|
|
struct br_input_skb_cb {
|
|
|
|
|
struct net_device *brdev;
|
2014-10-05 04:00:22 +00:00
|
|
|
|
2010-03-15 21:51:18 +00:00
|
|
|
#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
|
2010-02-27 19:41:45 +00:00
|
|
|
int igmp;
|
|
|
|
|
int mrouters_only;
|
2010-03-15 21:51:18 +00:00
|
|
|
#endif
|
2014-10-05 04:00:22 +00:00
|
|
|
|
2015-03-04 10:54:21 +00:00
|
|
|
bool proxyarp_replied;
|
2014-10-05 04:00:22 +00:00
|
|
|
|
2014-09-12 20:26:16 +00:00
|
|
|
#ifdef CONFIG_BRIDGE_VLAN_FILTERING
|
|
|
|
|
bool vlan_filtered;
|
|
|
|
|
#endif
|
2010-02-27 19:41:40 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
|
|
#define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb)
|
|
|
|
|
|
2010-03-15 21:51:18 +00:00
|
|
|
#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
|
|
|
|
|
# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only)
|
|
|
|
|
#else
|
|
|
|
|
# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0)
|
|
|
|
|
#endif
|
|
|
|
|
|
2010-05-10 09:31:09 +00:00
|
|
|
#define br_printk(level, br, format, args...) \
|
|
|
|
|
printk(level "%s: " format, (br)->dev->name, ##args)
|
|
|
|
|
|
|
|
|
|
#define br_err(__br, format, args...) \
|
|
|
|
|
br_printk(KERN_ERR, __br, format, ##args)
|
|
|
|
|
#define br_warn(__br, format, args...) \
|
|
|
|
|
br_printk(KERN_WARNING, __br, format, ##args)
|
|
|
|
|
#define br_notice(__br, format, args...) \
|
|
|
|
|
br_printk(KERN_NOTICE, __br, format, ##args)
|
|
|
|
|
#define br_info(__br, format, args...) \
|
|
|
|
|
br_printk(KERN_INFO, __br, format, ##args)
|
|
|
|
|
|
|
|
|
|
#define br_debug(br, format, args...) \
|
|
|
|
|
pr_debug("%s: " format, (br)->dev->name, ##args)
|
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
/* called under bridge lock */
|
|
|
|
|
static inline int br_is_root_bridge(const struct net_bridge *br)
|
|
|
|
|
{
|
|
|
|
|
return !memcmp(&br->bridge_id, &br->designated_root, 8);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* br_device.c */
|
2013-10-18 20:48:22 +00:00
|
|
|
void br_dev_setup(struct net_device *dev);
|
|
|
|
|
void br_dev_delete(struct net_device *dev, struct list_head *list);
|
|
|
|
|
netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev);
|
2010-05-10 09:31:08 +00:00
|
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
2010-06-10 16:12:50 +00:00
|
|
|
static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
|
|
|
|
|
struct sk_buff *skb)
|
|
|
|
|
{
|
|
|
|
|
struct netpoll *np = p->np;
|
|
|
|
|
|
|
|
|
|
if (np)
|
|
|
|
|
netpoll_send_skb(np, skb);
|
|
|
|
|
}
|
|
|
|
|
|
2014-03-27 22:36:38 +00:00
|
|
|
int br_netpoll_enable(struct net_bridge_port *p);
|
2013-10-18 20:48:22 +00:00
|
|
|
void br_netpoll_disable(struct net_bridge_port *p);
|
2010-05-10 09:31:08 +00:00
|
|
|
#else
|
2010-06-16 04:43:48 +00:00
|
|
|
static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
|
2010-06-10 16:12:50 +00:00
|
|
|
struct sk_buff *skb)
|
|
|
|
|
{
|
|
|
|
|
}
|
2010-05-10 09:31:08 +00:00
|
|
|
|
2014-03-27 22:36:38 +00:00
|
|
|
static inline int br_netpoll_enable(struct net_bridge_port *p)
|
2010-06-10 16:12:50 +00:00
|
|
|
{
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static inline void br_netpoll_disable(struct net_bridge_port *p)
|
|
|
|
|
{
|
|
|
|
|
}
|
2010-05-10 09:31:08 +00:00
|
|
|
#endif
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
|
/* br_fdb.c */
|
2013-10-18 20:48:22 +00:00
|
|
|
int br_fdb_init(void);
|
|
|
|
|
void br_fdb_fini(void);
|
|
|
|
|
void br_fdb_flush(struct net_bridge *br);
|
2014-02-07 07:48:25 +00:00
|
|
|
void br_fdb_find_delete_local(struct net_bridge *br,
|
|
|
|
|
const struct net_bridge_port *p,
|
|
|
|
|
const unsigned char *addr, u16 vid);
|
2013-10-18 20:48:22 +00:00
|
|
|
void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr);
|
|
|
|
|
void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr);
|
|
|
|
|
void br_fdb_cleanup(unsigned long arg);
|
|
|
|
|
void br_fdb_delete_by_port(struct net_bridge *br,
|
2015-06-23 12:28:16 +00:00
|
|
|
const struct net_bridge_port *p, u16 vid, int do_all);
|
2013-10-18 20:48:22 +00:00
|
|
|
struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br,
|
|
|
|
|
const unsigned char *addr, __u16 vid);
|
|
|
|
|
int br_fdb_test_addr(struct net_device *dev, unsigned char *addr);
|
|
|
|
|
int br_fdb_fillbuf(struct net_bridge *br, void *buf, unsigned long count,
|
|
|
|
|
unsigned long off);
|
|
|
|
|
int br_fdb_insert(struct net_bridge *br, struct net_bridge_port *source,
|
|
|
|
|
const unsigned char *addr, u16 vid);
|
|
|
|
|
void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
|
bridge: Fix the way to find old local fdb entries in br_fdb_changeaddr
br_fdb_changeaddr() assumes that there is at most one local entry per port
per vlan. It used to be true, but since commit 36fd2b63e3b4 ("bridge: allow
creating/deleting fdb entries via netlink"), it has not been so.
Therefore, the function might fail to search a correct previous address
to be deleted and delete an arbitrary local entry if user has added local
entries manually.
Example of problematic case:
ip link set eth0 address ee:ff:12:34:56:78
brctl addif br0 eth0
bridge fdb add 12:34:56:78:90:ab dev eth0 master
ip link set eth0 address aa:bb:cc:dd:ee:ff
Then, the address 12:34:56:78:90:ab might be deleted instead of
ee:ff:12:34:56:78, the original mac address of eth0.
Address this issue by introducing a new flag, added_by_user, to struct
net_bridge_fdb_entry.
Note that br_fdb_delete_by_port() has to set added_by_user to 0 in cases
like:
ip link set eth0 address 12:34:56:78:90:ab
ip link set eth1 address aa:bb:cc:dd:ee:ff
brctl addif br0 eth0
bridge fdb add aa:bb:cc:dd:ee:ff dev eth0 master
brctl addif br0 eth1
brctl delif br0 eth0
In this case, kernel should delete the user-added entry aa:bb:cc:dd:ee:ff,
but it also should have been added by "brctl addif br0 eth1" originally,
so we don't delete it and treat it a new kernel-created entry.
Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-07 07:48:18 +00:00
|
|
|
const unsigned char *addr, u16 vid, bool added_by_user);
|
2013-10-18 20:48:22 +00:00
|
|
|
|
|
|
|
|
int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
|
2014-11-28 13:34:15 +00:00
|
|
|
struct net_device *dev, const unsigned char *addr, u16 vid);
|
2013-10-18 20:48:22 +00:00
|
|
|
int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], struct net_device *dev,
|
2014-11-28 13:34:15 +00:00
|
|
|
const unsigned char *addr, u16 vid, u16 nlh_flags);
|
2013-10-18 20:48:22 +00:00
|
|
|
int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
|
2014-07-10 11:01:58 +00:00
|
|
|
struct net_device *dev, struct net_device *fdev, int idx);
|
2014-05-16 13:59:17 +00:00
|
|
|
int br_fdb_sync_static(struct net_bridge *br, struct net_bridge_port *p);
|
|
|
|
|
void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p);
|
2015-01-15 22:49:37 +00:00
|
|
|
int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p,
|
|
|
|
|
const unsigned char *addr, u16 vid);
|
|
|
|
|
int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p,
|
|
|
|
|
const unsigned char *addr, u16 vid);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
|
/* br_forward.c */
|
2013-10-18 20:48:22 +00:00
|
|
|
void br_deliver(const struct net_bridge_port *to, struct sk_buff *skb);
|
2015-04-06 02:19:04 +00:00
|
|
|
int br_dev_queue_push_xmit(struct sock *sk, struct sk_buff *skb);
|
2013-10-18 20:48:22 +00:00
|
|
|
void br_forward(const struct net_bridge_port *to,
|
2010-03-16 07:26:22 +00:00
|
|
|
struct sk_buff *skb, struct sk_buff *skb0);
|
2015-04-06 02:19:04 +00:00
|
|
|
int br_forward_finish(struct sock *sk, struct sk_buff *skb);
|
2013-10-18 20:48:22 +00:00
|
|
|
void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb, bool unicast);
|
|
|
|
|
void br_flood_forward(struct net_bridge *br, struct sk_buff *skb,
|
|
|
|
|
struct sk_buff *skb2, bool unicast);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
|
/* br_if.c */
|
2013-10-18 20:48:22 +00:00
|
|
|
void br_port_carrier_check(struct net_bridge_port *p);
|
|
|
|
|
int br_add_bridge(struct net *net, const char *name);
|
|
|
|
|
int br_del_bridge(struct net *net, const char *name);
|
|
|
|
|
int br_add_if(struct net_bridge *br, struct net_device *dev);
|
|
|
|
|
int br_del_if(struct net_bridge *br, struct net_device *dev);
|
|
|
|
|
int br_min_mtu(const struct net_bridge *br);
|
|
|
|
|
netdev_features_t br_features_recompute(struct net_bridge *br,
|
|
|
|
|
netdev_features_t features);
|
2014-05-16 13:59:16 +00:00
|
|
|
void br_port_flags_change(struct net_bridge_port *port, unsigned long mask);
|
2014-05-16 13:59:20 +00:00
|
|
|
void br_manage_promisc(struct net_bridge *br);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
|
/* br_input.c */
|
2015-04-06 02:19:04 +00:00
|
|
|
int br_handle_frame_finish(struct sock *sk, struct sk_buff *skb);
|
2013-10-18 20:48:22 +00:00
|
|
|
rx_handler_result_t br_handle_frame(struct sk_buff **pskb);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2013-12-05 15:27:37 +00:00
|
|
|
static inline bool br_rx_handler_check_rcu(const struct net_device *dev)
|
|
|
|
|
{
|
|
|
|
|
return rcu_dereference(dev->rx_handler) == br_handle_frame;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static inline struct net_bridge_port *br_port_get_check_rcu(const struct net_device *dev)
|
|
|
|
|
{
|
|
|
|
|
return br_rx_handler_check_rcu(dev) ? br_port_get_rcu(dev) : NULL;
|
|
|
|
|
}
|
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
/* br_ioctl.c */
|
2013-10-18 20:48:22 +00:00
|
|
|
int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
|
|
|
|
|
int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd,
|
|
|
|
|
void __user *arg);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2010-02-27 19:41:45 +00:00
|
|
|
/* br_multicast.c */
|
|
|
|
|
#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
|
2012-12-10 02:15:35 +00:00
|
|
|
extern unsigned int br_mdb_rehash_seq;
|
2013-10-18 20:48:22 +00:00
|
|
|
int br_multicast_rcv(struct net_bridge *br, struct net_bridge_port *port,
|
2013-11-04 18:48:30 +00:00
|
|
|
struct sk_buff *skb, u16 vid);
|
2013-10-18 20:48:22 +00:00
|
|
|
struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
|
|
|
|
|
struct sk_buff *skb, u16 vid);
|
|
|
|
|
void br_multicast_add_port(struct net_bridge_port *port);
|
|
|
|
|
void br_multicast_del_port(struct net_bridge_port *port);
|
|
|
|
|
void br_multicast_enable_port(struct net_bridge_port *port);
|
|
|
|
|
void br_multicast_disable_port(struct net_bridge_port *port);
|
|
|
|
|
void br_multicast_init(struct net_bridge *br);
|
|
|
|
|
void br_multicast_open(struct net_bridge *br);
|
|
|
|
|
void br_multicast_stop(struct net_bridge *br);
|
2015-07-15 14:16:51 +00:00
|
|
|
void br_multicast_dev_del(struct net_bridge *br);
|
2013-10-18 20:48:22 +00:00
|
|
|
void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
|
|
|
|
|
struct sk_buff *skb);
|
|
|
|
|
void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
|
|
|
|
|
struct sk_buff *skb, struct sk_buff *skb2);
|
|
|
|
|
int br_multicast_set_router(struct net_bridge *br, unsigned long val);
|
|
|
|
|
int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val);
|
|
|
|
|
int br_multicast_toggle(struct net_bridge *br, unsigned long val);
|
|
|
|
|
int br_multicast_set_querier(struct net_bridge *br, unsigned long val);
|
|
|
|
|
int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val);
|
|
|
|
|
struct net_bridge_mdb_entry *
|
|
|
|
|
br_mdb_ip_get(struct net_bridge_mdb_htable *mdb, struct br_ip *dst);
|
|
|
|
|
struct net_bridge_mdb_entry *
|
|
|
|
|
br_multicast_new_group(struct net_bridge *br, struct net_bridge_port *port,
|
|
|
|
|
struct br_ip *group);
|
|
|
|
|
void br_multicast_free_pg(struct rcu_head *head);
|
|
|
|
|
struct net_bridge_port_group *
|
|
|
|
|
br_multicast_new_port_group(struct net_bridge_port *port, struct br_ip *group,
|
|
|
|
|
struct net_bridge_port_group __rcu *next,
|
|
|
|
|
unsigned char state);
|
|
|
|
|
void br_mdb_init(void);
|
|
|
|
|
void br_mdb_uninit(void);
|
|
|
|
|
void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port,
|
2015-07-09 10:11:10 +00:00
|
|
|
struct br_ip *group, int type, u8 state);
|
2015-07-23 12:00:53 +00:00
|
|
|
void br_rtr_notify(struct net_device *dev, struct net_bridge_port *port,
|
|
|
|
|
int type);
|
2010-03-01 09:53:04 +00:00
|
|
|
|
2012-12-11 22:23:08 +00:00
|
|
|
#define mlock_dereference(X, br) \
|
|
|
|
|
rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock))
|
|
|
|
|
|
2010-03-01 09:53:04 +00:00
|
|
|
static inline bool br_multicast_is_router(struct net_bridge *br)
|
|
|
|
|
{
|
|
|
|
|
return br->multicast_router == 2 ||
|
|
|
|
|
(br->multicast_router == 1 &&
|
|
|
|
|
timer_pending(&br->multicast_router_timer));
|
|
|
|
|
}
|
2013-07-31 23:06:20 +00:00
|
|
|
|
2013-08-30 15:28:17 +00:00
|
|
|
static inline bool
|
|
|
|
|
__br_multicast_querier_exists(struct net_bridge *br,
|
2014-06-07 16:26:26 +00:00
|
|
|
struct bridge_mcast_other_query *querier)
|
2013-07-31 23:06:20 +00:00
|
|
|
{
|
2013-08-30 15:28:17 +00:00
|
|
|
return time_is_before_jiffies(querier->delay_time) &&
|
|
|
|
|
(br->multicast_querier || timer_pending(&querier->timer));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static inline bool br_multicast_querier_exists(struct net_bridge *br,
|
|
|
|
|
struct ethhdr *eth)
|
|
|
|
|
{
|
|
|
|
|
switch (eth->h_proto) {
|
|
|
|
|
case (htons(ETH_P_IP)):
|
2014-06-07 16:26:26 +00:00
|
|
|
return __br_multicast_querier_exists(br, &br->ip4_other_query);
|
2013-08-30 15:28:17 +00:00
|
|
|
#if IS_ENABLED(CONFIG_IPV6)
|
|
|
|
|
case (htons(ETH_P_IPV6)):
|
2014-06-07 16:26:26 +00:00
|
|
|
return __br_multicast_querier_exists(br, &br->ip6_other_query);
|
2013-08-30 15:28:17 +00:00
|
|
|
#endif
|
|
|
|
|
default:
|
|
|
|
|
return false;
|
|
|
|
|
}
|
2013-07-31 23:06:20 +00:00
|
|
|
}
|
2010-02-27 19:41:45 +00:00
|
|
|
#else
|
|
|
|
|
static inline int br_multicast_rcv(struct net_bridge *br,
|
|
|
|
|
struct net_bridge_port *port,
|
2013-10-28 19:45:07 +00:00
|
|
|
struct sk_buff *skb,
|
|
|
|
|
u16 vid)
|
2010-02-27 19:41:45 +00:00
|
|
|
{
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
|
2013-03-07 03:05:33 +00:00
|
|
|
struct sk_buff *skb, u16 vid)
|
2010-02-27 19:41:45 +00:00
|
|
|
{
|
|
|
|
|
return NULL;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static inline void br_multicast_add_port(struct net_bridge_port *port)
|
|
|
|
|
{
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static inline void br_multicast_del_port(struct net_bridge_port *port)
|
|
|
|
|
{
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static inline void br_multicast_enable_port(struct net_bridge_port *port)
|
|
|
|
|
{
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static inline void br_multicast_disable_port(struct net_bridge_port *port)
|
|
|
|
|
{
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static inline void br_multicast_init(struct net_bridge *br)
|
|
|
|
|
{
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static inline void br_multicast_open(struct net_bridge *br)
|
|
|
|
|
{
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static inline void br_multicast_stop(struct net_bridge *br)
|
|
|
|
|
{
|
|
|
|
|
}
|
2010-02-27 19:41:46 +00:00
|
|
|
|
2015-07-20 21:03:45 +00:00
|
|
|
static inline void br_multicast_dev_del(struct net_bridge *br)
|
|
|
|
|
{
|
|
|
|
|
}
|
|
|
|
|
|
2010-02-27 19:41:46 +00:00
|
|
|
static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
|
|
|
|
|
struct sk_buff *skb)
|
|
|
|
|
{
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static inline void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
|
|
|
|
|
struct sk_buff *skb,
|
|
|
|
|
struct sk_buff *skb2)
|
|
|
|
|
{
|
|
|
|
|
}
|
2010-02-27 19:41:45 +00:00
|
|
|
static inline bool br_multicast_is_router(struct net_bridge *br)
|
|
|
|
|
{
|
2010-03-01 09:53:04 +00:00
|
|
|
return 0;
|
2010-02-27 19:41:45 +00:00
|
|
|
}
|
2013-08-30 15:28:17 +00:00
|
|
|
static inline bool br_multicast_querier_exists(struct net_bridge *br,
|
|
|
|
|
struct ethhdr *eth)
|
2013-07-31 23:06:20 +00:00
|
|
|
{
|
|
|
|
|
return false;
|
|
|
|
|
}
|
2013-01-03 11:30:43 +00:00
|
|
|
static inline void br_mdb_init(void)
|
|
|
|
|
{
|
|
|
|
|
}
|
|
|
|
|
static inline void br_mdb_uninit(void)
|
|
|
|
|
{
|
|
|
|
|
}
|
2010-03-01 09:53:04 +00:00
|
|
|
#endif
|
2010-02-27 19:41:45 +00:00
|
|
|
|
2013-02-13 12:00:09 +00:00
|
|
|
/* br_vlan.c */
|
|
|
|
|
#ifdef CONFIG_BRIDGE_VLAN_FILTERING
|
2013-10-18 20:48:22 +00:00
|
|
|
bool br_allowed_ingress(struct net_bridge *br, struct net_port_vlans *v,
|
|
|
|
|
struct sk_buff *skb, u16 *vid);
|
|
|
|
|
bool br_allowed_egress(struct net_bridge *br, const struct net_port_vlans *v,
|
|
|
|
|
const struct sk_buff *skb);
|
2014-05-26 06:15:53 +00:00
|
|
|
bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid);
|
2013-10-18 20:48:22 +00:00
|
|
|
struct sk_buff *br_handle_vlan(struct net_bridge *br,
|
|
|
|
|
const struct net_port_vlans *v,
|
|
|
|
|
struct sk_buff *skb);
|
|
|
|
|
int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags);
|
|
|
|
|
int br_vlan_delete(struct net_bridge *br, u16 vid);
|
|
|
|
|
void br_vlan_flush(struct net_bridge *br);
|
bridge: Fix the way to check if a local fdb entry can be deleted
We should take into account the followings when deleting a local fdb
entry.
- nbp_vlan_find() can be used only when vid != 0 to check if an entry is
deletable, because a fdb entry with vid 0 can exist at any time while
nbp_vlan_find() always return false with vid 0.
Example of problematic case:
ip link set eth0 address 12:34:56:78:90:ab
ip link set eth1 address 12:34:56:78:90:ab
brctl addif br0 eth0
brctl addif br0 eth1
ip link set eth0 address aa:bb:cc:dd:ee:ff
Then, the fdb entry 12:34:56:78:90:ab will be deleted even though the
bridge port eth1 still has that address.
- The port to which the bridge device is attached might needs a local entry
if its mac address is set manually.
Example of problematic case:
ip link set eth0 address 12:34:56:78:90:ab
brctl addif br0 eth0
ip link set br0 address 12:34:56:78:90:ab
ip link set eth0 address aa:bb:cc:dd:ee:ff
Then, the fdb still must have the entry 12:34:56:78:90:ab, but it will be
deleted.
We can use br->dev->addr_assign_type to check if the address is manually
set or not, but I propose another approach.
Since we delete and insert local entries whenever changing mac address
of the bridge device, we can change dst of the entry to NULL regardless of
addr_assign_type when deleting an entry associated with a certain port,
and if it is found to be unnecessary later, then delete it.
That is, if changing mac address of a port, the entry might be changed
to its dst being NULL first, but is eventually deleted when recalculating
and changing bridge id.
This approach is especially useful when we want to share the code with
deleting vlan in which the bridge device might want such an entry regardless
of addr_assign_type, and makes things easy because we don't have to consider
if mac address of the bridge device will be changed or not at the time we
delete a local entry of a port, which means fdb code will not be bothered
even if the bridge id calculating logic is changed in the future.
Also, this change reduces inconsistent state, where frames whose dst is the
mac address of the bridge, can't reach the bridge because of premature fdb
entry deletion. This change reduces the possibility that the bridge device
replies unreachable mac address to arp requests, which could occur during
the short window between calling del_nbp() and br_stp_recalculate_bridge_id()
in br_del_if(). This will effective after br_fdb_delete_by_port() starts to
use the same code by following patch.
Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Acked-by: Vlad Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-07 07:48:22 +00:00
|
|
|
bool br_vlan_find(struct net_bridge *br, u16 vid);
|
2014-06-10 11:59:25 +00:00
|
|
|
void br_recalculate_fwd_mask(struct net_bridge *br);
|
2015-08-07 16:40:45 +00:00
|
|
|
int __br_vlan_filter_toggle(struct net_bridge *br, unsigned long val);
|
2013-10-18 20:48:22 +00:00
|
|
|
int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val);
|
2015-08-27 06:32:26 +00:00
|
|
|
int __br_vlan_set_proto(struct net_bridge *br, __be16 proto);
|
2014-06-10 11:59:25 +00:00
|
|
|
int br_vlan_set_proto(struct net_bridge *br, unsigned long val);
|
2014-10-03 15:29:18 +00:00
|
|
|
int br_vlan_init(struct net_bridge *br);
|
2014-10-03 15:29:16 +00:00
|
|
|
int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val);
|
2013-10-18 20:48:22 +00:00
|
|
|
int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags);
|
|
|
|
|
int nbp_vlan_delete(struct net_bridge_port *port, u16 vid);
|
|
|
|
|
void nbp_vlan_flush(struct net_bridge_port *port);
|
|
|
|
|
bool nbp_vlan_find(struct net_bridge_port *port, u16 vid);
|
2014-10-03 15:29:18 +00:00
|
|
|
int nbp_vlan_init(struct net_bridge_port *port);
|
2013-02-13 12:00:10 +00:00
|
|
|
|
|
|
|
|
static inline struct net_port_vlans *br_get_vlan_info(
|
|
|
|
|
const struct net_bridge *br)
|
|
|
|
|
{
|
2013-02-13 12:00:18 +00:00
|
|
|
return rcu_dereference_rtnl(br->vlan_info);
|
2013-02-13 12:00:10 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static inline struct net_port_vlans *nbp_get_vlan_info(
|
|
|
|
|
const struct net_bridge_port *p)
|
|
|
|
|
{
|
2013-02-13 12:00:18 +00:00
|
|
|
return rcu_dereference_rtnl(p->vlan_info);
|
2013-02-13 12:00:10 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Since bridge now depends on 8021Q module, but the time bridge sees the
|
|
|
|
|
* skb, the vlan tag will always be present if the frame was tagged.
|
|
|
|
|
*/
|
|
|
|
|
static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid)
|
|
|
|
|
{
|
|
|
|
|
int err = 0;
|
|
|
|
|
|
2015-01-13 16:13:44 +00:00
|
|
|
if (skb_vlan_tag_present(skb))
|
|
|
|
|
*vid = skb_vlan_tag_get(skb) & VLAN_VID_MASK;
|
2013-02-13 12:00:10 +00:00
|
|
|
else {
|
|
|
|
|
*vid = 0;
|
|
|
|
|
err = -EINVAL;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return err;
|
|
|
|
|
}
|
2013-02-13 12:00:14 +00:00
|
|
|
|
|
|
|
|
static inline u16 br_get_pvid(const struct net_port_vlans *v)
|
|
|
|
|
{
|
2014-10-03 15:29:18 +00:00
|
|
|
if (!v)
|
|
|
|
|
return 0;
|
|
|
|
|
|
2013-02-13 12:00:14 +00:00
|
|
|
smp_rmb();
|
2014-10-03 15:29:17 +00:00
|
|
|
return v->pvid;
|
2013-02-13 12:00:14 +00:00
|
|
|
}
|
|
|
|
|
|
2014-05-16 13:59:20 +00:00
|
|
|
static inline int br_vlan_enabled(struct net_bridge *br)
|
|
|
|
|
{
|
|
|
|
|
return br->vlan_enabled;
|
|
|
|
|
}
|
2013-02-13 12:00:09 +00:00
|
|
|
#else
|
2013-02-13 12:00:10 +00:00
|
|
|
static inline bool br_allowed_ingress(struct net_bridge *br,
|
|
|
|
|
struct net_port_vlans *v,
|
2013-02-13 12:00:14 +00:00
|
|
|
struct sk_buff *skb,
|
|
|
|
|
u16 *vid)
|
2013-02-13 12:00:10 +00:00
|
|
|
{
|
|
|
|
|
return true;
|
|
|
|
|
}
|
|
|
|
|
|
2013-02-13 12:00:11 +00:00
|
|
|
static inline bool br_allowed_egress(struct net_bridge *br,
|
|
|
|
|
const struct net_port_vlans *v,
|
|
|
|
|
const struct sk_buff *skb)
|
|
|
|
|
{
|
|
|
|
|
return true;
|
|
|
|
|
}
|
|
|
|
|
|
2014-05-26 06:15:53 +00:00
|
|
|
static inline bool br_should_learn(struct net_bridge_port *p,
|
|
|
|
|
struct sk_buff *skb, u16 *vid)
|
|
|
|
|
{
|
|
|
|
|
return true;
|
|
|
|
|
}
|
|
|
|
|
|
2013-02-13 12:00:14 +00:00
|
|
|
static inline struct sk_buff *br_handle_vlan(struct net_bridge *br,
|
|
|
|
|
const struct net_port_vlans *v,
|
|
|
|
|
struct sk_buff *skb)
|
|
|
|
|
{
|
|
|
|
|
return skb;
|
|
|
|
|
}
|
|
|
|
|
|
2013-02-13 12:00:15 +00:00
|
|
|
static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags)
|
2013-02-13 12:00:09 +00:00
|
|
|
{
|
|
|
|
|
return -EOPNOTSUPP;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static inline int br_vlan_delete(struct net_bridge *br, u16 vid)
|
|
|
|
|
{
|
|
|
|
|
return -EOPNOTSUPP;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static inline void br_vlan_flush(struct net_bridge *br)
|
|
|
|
|
{
|
|
|
|
|
}
|
|
|
|
|
|
bridge: Fix the way to check if a local fdb entry can be deleted
We should take into account the followings when deleting a local fdb
entry.
- nbp_vlan_find() can be used only when vid != 0 to check if an entry is
deletable, because a fdb entry with vid 0 can exist at any time while
nbp_vlan_find() always return false with vid 0.
Example of problematic case:
ip link set eth0 address 12:34:56:78:90:ab
ip link set eth1 address 12:34:56:78:90:ab
brctl addif br0 eth0
brctl addif br0 eth1
ip link set eth0 address aa:bb:cc:dd:ee:ff
Then, the fdb entry 12:34:56:78:90:ab will be deleted even though the
bridge port eth1 still has that address.
- The port to which the bridge device is attached might needs a local entry
if its mac address is set manually.
Example of problematic case:
ip link set eth0 address 12:34:56:78:90:ab
brctl addif br0 eth0
ip link set br0 address 12:34:56:78:90:ab
ip link set eth0 address aa:bb:cc:dd:ee:ff
Then, the fdb still must have the entry 12:34:56:78:90:ab, but it will be
deleted.
We can use br->dev->addr_assign_type to check if the address is manually
set or not, but I propose another approach.
Since we delete and insert local entries whenever changing mac address
of the bridge device, we can change dst of the entry to NULL regardless of
addr_assign_type when deleting an entry associated with a certain port,
and if it is found to be unnecessary later, then delete it.
That is, if changing mac address of a port, the entry might be changed
to its dst being NULL first, but is eventually deleted when recalculating
and changing bridge id.
This approach is especially useful when we want to share the code with
deleting vlan in which the bridge device might want such an entry regardless
of addr_assign_type, and makes things easy because we don't have to consider
if mac address of the bridge device will be changed or not at the time we
delete a local entry of a port, which means fdb code will not be bothered
even if the bridge id calculating logic is changed in the future.
Also, this change reduces inconsistent state, where frames whose dst is the
mac address of the bridge, can't reach the bridge because of premature fdb
entry deletion. This change reduces the possibility that the bridge device
replies unreachable mac address to arp requests, which could occur during
the short window between calling del_nbp() and br_stp_recalculate_bridge_id()
in br_del_if(). This will effective after br_fdb_delete_by_port() starts to
use the same code by following patch.
Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Acked-by: Vlad Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-07 07:48:22 +00:00
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static inline bool br_vlan_find(struct net_bridge *br, u16 vid)
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{
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return false;
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}
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2014-06-10 11:59:25 +00:00
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static inline void br_recalculate_fwd_mask(struct net_bridge *br)
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{
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}
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2014-10-03 15:29:18 +00:00
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static inline int br_vlan_init(struct net_bridge *br)
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2014-06-10 11:59:23 +00:00
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{
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2014-10-03 15:29:18 +00:00
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return 0;
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2014-06-10 11:59:23 +00:00
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}
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2013-02-13 12:00:15 +00:00
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static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags)
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2013-02-13 12:00:09 +00:00
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{
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return -EOPNOTSUPP;
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}
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static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid)
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{
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return -EOPNOTSUPP;
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}
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static inline void nbp_vlan_flush(struct net_bridge_port *port)
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{
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}
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2013-02-13 12:00:10 +00:00
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static inline struct net_port_vlans *br_get_vlan_info(
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const struct net_bridge *br)
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{
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return NULL;
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}
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static inline struct net_port_vlans *nbp_get_vlan_info(
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const struct net_bridge_port *p)
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{
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return NULL;
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}
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2013-02-13 12:00:19 +00:00
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static inline bool nbp_vlan_find(struct net_bridge_port *port, u16 vid)
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{
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return false;
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}
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2014-10-03 15:29:18 +00:00
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static inline int nbp_vlan_init(struct net_bridge_port *port)
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{
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return 0;
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}
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2013-02-13 12:00:14 +00:00
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static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag)
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2013-02-13 12:00:10 +00:00
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{
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return 0;
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}
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2013-02-13 12:00:14 +00:00
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static inline u16 br_get_pvid(const struct net_port_vlans *v)
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{
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2014-10-03 15:29:17 +00:00
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return 0;
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2013-02-13 12:00:14 +00:00
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}
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2014-05-16 13:59:20 +00:00
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2014-05-18 17:30:28 +00:00
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static inline int br_vlan_enabled(struct net_bridge *br)
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2014-05-16 13:59:20 +00:00
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{
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return 0;
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}
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2015-08-07 16:40:45 +00:00
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static inline int __br_vlan_filter_toggle(struct net_bridge *br,
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unsigned long val)
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{
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return -EOPNOTSUPP;
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}
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2013-02-13 12:00:09 +00:00
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#endif
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2015-03-10 09:27:18 +00:00
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struct nf_br_ops {
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int (*br_dev_xmit_hook)(struct sk_buff *skb);
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};
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extern const struct nf_br_ops __rcu *nf_br_ops;
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2005-04-16 22:20:36 +00:00
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/* br_netfilter.c */
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2014-09-18 09:29:03 +00:00
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#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
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int br_nf_core_init(void);
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void br_nf_core_fini(void);
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2013-10-18 20:48:22 +00:00
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void br_netfilter_rtable_init(struct net_bridge *);
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2006-05-25 22:59:33 +00:00
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#else
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2014-09-18 09:29:03 +00:00
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static inline int br_nf_core_init(void) { return 0; }
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static inline void br_nf_core_fini(void) {}
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2008-07-30 23:27:55 +00:00
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#define br_netfilter_rtable_init(x)
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2006-05-25 22:59:33 +00:00
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#endif
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2005-04-16 22:20:36 +00:00
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/* br_stp.c */
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2013-10-18 20:48:22 +00:00
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void br_log_state(const struct net_bridge_port *p);
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2014-09-30 23:13:19 +00:00
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void br_set_state(struct net_bridge_port *p, unsigned int state);
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2013-10-18 20:48:22 +00:00
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struct net_bridge_port *br_get_port(struct net_bridge *br, u16 port_no);
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void br_init_port(struct net_bridge_port *p);
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void br_become_designated_port(struct net_bridge_port *p);
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2005-04-16 22:20:36 +00:00
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2013-10-18 20:48:22 +00:00
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void __br_set_forward_delay(struct net_bridge *br, unsigned long t);
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int br_set_forward_delay(struct net_bridge *br, unsigned long x);
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int br_set_hello_time(struct net_bridge *br, unsigned long x);
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int br_set_max_age(struct net_bridge *br, unsigned long x);
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2011-04-04 14:03:33 +00:00
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2005-04-16 22:20:36 +00:00
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/* br_stp_if.c */
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2013-10-18 20:48:22 +00:00
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void br_stp_enable_bridge(struct net_bridge *br);
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void br_stp_disable_bridge(struct net_bridge *br);
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void br_stp_set_enabled(struct net_bridge *br, unsigned long val);
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void br_stp_enable_port(struct net_bridge_port *p);
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void br_stp_disable_port(struct net_bridge_port *p);
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bool br_stp_recalculate_bridge_id(struct net_bridge *br);
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void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
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void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio);
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int br_stp_set_port_priority(struct net_bridge_port *p, unsigned long newprio);
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int br_stp_set_path_cost(struct net_bridge_port *p, unsigned long path_cost);
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ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
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2005-04-16 22:20:36 +00:00
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/* br_stp_bpdu.c */
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2008-07-06 04:25:56 +00:00
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struct stp_proto;
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2013-10-18 20:48:22 +00:00
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void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb,
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struct net_device *dev);
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2005-04-16 22:20:36 +00:00
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/* br_stp_timer.c */
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2013-10-18 20:48:22 +00:00
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void br_stp_timer_init(struct net_bridge *br);
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void br_stp_port_timer_init(struct net_bridge_port *p);
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unsigned long br_timer_value(const struct timer_list *timer);
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2005-04-16 22:20:36 +00:00
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/* br.c */
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2011-12-12 02:58:25 +00:00
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#if IS_ENABLED(CONFIG_ATM_LANE)
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2009-06-05 05:35:28 +00:00
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extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr);
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#endif
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2005-04-16 22:20:36 +00:00
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2006-05-25 23:00:12 +00:00
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/* br_netlink.c */
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2012-06-26 05:48:45 +00:00
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extern struct rtnl_link_ops br_link_ops;
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2013-10-18 20:48:22 +00:00
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int br_netlink_init(void);
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void br_netlink_fini(void);
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void br_ifinfo_notify(int event, struct net_bridge_port *port);
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2015-01-30 06:40:12 +00:00
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int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags);
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int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags);
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2013-10-18 20:48:22 +00:00
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int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev,
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2015-04-28 16:33:49 +00:00
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u32 filter_mask, int nlflags);
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2006-05-25 23:00:12 +00:00
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2005-04-16 22:20:36 +00:00
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#ifdef CONFIG_SYSFS
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/* br_sysfs_if.c */
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2010-01-19 01:58:23 +00:00
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extern const struct sysfs_ops brport_sysfs_ops;
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2013-10-18 20:48:22 +00:00
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int br_sysfs_addif(struct net_bridge_port *p);
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int br_sysfs_renameif(struct net_bridge_port *p);
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2005-04-16 22:20:36 +00:00
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/* br_sysfs_br.c */
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2013-10-18 20:48:22 +00:00
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int br_sysfs_addbr(struct net_device *dev);
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void br_sysfs_delbr(struct net_device *dev);
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2005-04-16 22:20:36 +00:00
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#else
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2012-11-03 22:02:30 +00:00
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static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; }
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static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; }
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static inline int br_sysfs_addbr(struct net_device *dev) { return 0; }
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static inline void br_sysfs_delbr(struct net_device *dev) { return; }
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2005-04-16 22:20:36 +00:00
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#endif /* CONFIG_SYSFS */
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#endif
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