Commit 88f64320 authored Jul 23, 2015 by Julian Anastasov Committed by David S. Miller Jul 26, 2015

ipv4: be more aggressive when probing alternative gateways



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>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 48fb6b55

net/ipv4/fib_semantics.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -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;
		}