Re: [PATCH] make _minimum_ TCP retransmission timeout configurable take 2
From: David Miller <davem@davemloft.net>
Date: 2007-08-31 21:38:56
Subsystem:
networking [general], networking [tcp], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Neal Cardwell, Linus Torvalds
From: Rick Jones <redacted> Date: Fri, 31 Aug 2007 13:59:50 -0700
ip is at tcp_rto_min+0x20/0x40
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 1ee7212..bbad2cd 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c@@ -560,7 +560,7 @@ static u32 tcp_rto_min(struct sock *sk) struct dst_entry *dst = __sk_dst_get(sk); u32 rto_min = TCP_RTO_MIN; - if (dst_metric_locked(dst, RTAX_RTO_MIN)) + if (dst && dst_metric_locked(dst, RTAX_RTO_MIN)) rto_min = dst->metrics[RTAX_RTO_MIN-1]; return rto_min; }