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bridge: fdb add and delete tracepoints

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A few useful tracepoints to trace bridge forwarding
database updates.

Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Roopa Prabhu
2017-08-29 13:16:57 -07:00
committed by David S. Miller
parent a7043f65f6
commit b74fd306ef
3 changed files with 111 additions and 0 deletions
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7
net/bridge/br_fdb.c
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@@ -25,6 +25,7 @@
#include <asm/unaligned.h>
#include <linux/if_vlan.h>
#include <net/switchdev.h>
#include <trace/events/bridge.h>
#include "br_private.h"
static struct kmem_cache *br_fdb_cache __read_mostly;
@@ -171,6 +172,8 @@ static void fdb_del_hw_addr(struct net_bridge *br, const unsigned char *addr)
static void fdb_delete(struct net_bridge *br, struct net_bridge_fdb_entry *f)
{
trace_fdb_delete(br, f);
if (f->is_static)
fdb_del_hw_addr(br, f->addr.addr);
@@ -870,6 +873,8 @@ int br_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
struct net_bridge *br = NULL;
int err = 0;
trace_br_fdb_add(ndm, dev, addr, vid, nlh_flags);
if (!(ndm->ndm_state & (NUD_PERMANENT|NUD_NOARP|NUD_REACHABLE))) {
pr_info("bridge: RTM_NEWNEIGH with invalid state %#x\n", ndm->ndm_state);
return -EINVAL;
@@ -1066,6 +1071,8 @@ int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p,
bool modified = false;
int err = 0;
trace_br_fdb_external_learn_add(br, p, addr, vid);
spin_lock_bh(&br->hash_lock);
head = &br->hash[br_mac_hash(addr, vid)];