diff mbox

[net-next] ipv4: be more aggressive when probing alternative gateways

Message ID 1437637175-8052-1-git-send-email-ja@ssi.bg
State Accepted, archived
Delegated to: David Miller
Headers show

Commit Message

Julian Anastasov July 23, 2015, 7:39 a.m. UTC
Currently, we do not notice if new alternative gateways
are added. We can do it by checking for present neigh
entry. Also, gateways that are currently probed (NUD_INCOMPLETE)
can be skipped from round-robin probing.

Suggested-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Julian Anastasov <ja@ssi.bg>
---
 net/ipv4/fib_semantics.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

Comments

David Miller July 27, 2015, 3:57 a.m. UTC | #1
From: Julian Anastasov <ja@ssi.bg>
Date: Thu, 23 Jul 2015 10:39:35 +0300

> Currently, we do not notice if new alternative gateways
> are added. We can do it by checking for present neigh
> entry. Also, gateways that are currently probed (NUD_INCOMPLETE)
> can be skipped from round-robin probing.
> 
> Suggested-by: Florian Westphal <fw@strlen.de>
> Signed-off-by: Julian Anastasov <ja@ssi.bg>

Applied.
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diff mbox

Patch

diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c
index 6754c64..d4c6732 100644
--- a/net/ipv4/fib_semantics.c
+++ b/net/ipv4/fib_semantics.c
@@ -438,13 +438,15 @@  static int fib_detect_death(struct fib_info *fi, int order,
 	if (n) {
 		state = n->nud_state;
 		neigh_release(n);
+	} else {
+		return 0;
 	}
 	if (state == NUD_REACHABLE)
 		return 0;
 	if ((state & NUD_VALID) && order != dflt)
 		return 0;
 	if ((state & NUD_VALID) ||
-	    (*last_idx < 0 && order > dflt)) {
+	    (*last_idx < 0 && order > dflt && state != NUD_INCOMPLETE)) {
 		*last_resort = fi;
 		*last_idx = order;
 	}