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authorRoopa Prabhu <roopa@cumulusnetworks.com>2019-02-14 09:15:11 -0800
committerDavid S. Miller <davem@davemloft.net>2019-02-17 10:33:39 -0800
commit56dd18a49f6ee62ce06eb6cd0aec050e23d4e603 (patch)
tree3d6db80bf2cad630a3c1f5e8cf44a916b1b35279 /net/core
parent9c03b282badb7600058321c80e367f93b4013bd0 (diff)
downloadlinux-56dd18a49f6ee62ce06eb6cd0aec050e23d4e603.tar.bz2
neigh: hook tracepoints in neigh update code
hook tracepoints at the end of functions that update a neigh entry. neigh_update gets an additional tracepoint to trace the update flags and old and new neigh states. Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
-rw-r--r--net/core/neighbour.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index 4230400b9a30..30f6fd8f68e0 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -42,6 +42,8 @@
#include <linux/inetdevice.h>
#include <net/addrconf.h>
+#include <trace/events/neigh.h>
+
#define DEBUG
#define NEIGH_DEBUG 1
#define neigh_dbg(level, fmt, ...) \
@@ -102,6 +104,7 @@ static void neigh_cleanup_and_release(struct neighbour *neigh)
if (neigh->parms->neigh_cleanup)
neigh->parms->neigh_cleanup(neigh);
+ trace_neigh_cleanup_and_release(neigh, 0);
__neigh_notify(neigh, RTM_DELNEIGH, 0, 0);
call_netevent_notifiers(NETEVENT_NEIGH_UPDATE, neigh);
neigh_release(neigh);
@@ -1095,6 +1098,8 @@ out:
if (notify)
neigh_update_notify(neigh, 0);
+ trace_neigh_timer_handler(neigh, 0);
+
neigh_release(neigh);
}
@@ -1165,6 +1170,7 @@ out_unlock_bh:
else
write_unlock(&neigh->lock);
local_bh_enable();
+ trace_neigh_event_send_done(neigh, rc);
return rc;
out_dead:
@@ -1172,6 +1178,7 @@ out_dead:
goto out_unlock_bh;
write_unlock_bh(&neigh->lock);
kfree_skb(skb);
+ trace_neigh_event_send_dead(neigh, 1);
return 1;
}
EXPORT_SYMBOL(__neigh_event_send);
@@ -1227,6 +1234,8 @@ static int __neigh_update(struct neighbour *neigh, const u8 *lladdr,
struct net_device *dev;
int update_isrouter = 0;
+ trace_neigh_update(neigh, lladdr, new, flags, nlmsg_pid);
+
write_lock_bh(&neigh->lock);
dev = neigh->dev;
@@ -1393,6 +1402,8 @@ out:
if (notify)
neigh_update_notify(neigh, nlmsg_pid);
+ trace_neigh_update_done(neigh, err);
+
return err;
}