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| author | Florian Westphal <fw@strlen.de> | 2008-07-26 02:21:54 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-07-26 02:21:54 -0700 |
| commit | 16df845f4566bc252f3e09db12f5c2f22cb44226 (patch) | |
| tree | c83f5b664b669ff26bbf5c9a44b9ccecfa53c506 | |
| parent | ec34c702ca8b7d6f0aa54379c3b0d0ec10b8ff23 (diff) | |
| download | linux-16df845f4566bc252f3e09db12f5c2f22cb44226.tar.gz | |
syncookies: Make sure ECN is disabled
ecn_ok is not initialized when a connection is established by cookies. The cookie syn-ack never sets ECN, so ecn_ok must be set to 0. Spotted using ns-3/network simulation cradle simulator and valgrind. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/ipv4/syncookies.c | 1 | ||||
| -rw-r--r-- | net/ipv6/syncookies.c | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/net/ipv4/syncookies.c b/net/ipv4/syncookies.c index 51bc24d3b8a7..9d38005abbac 100644 --- a/net/ipv4/syncookies.c +++ b/net/ipv4/syncookies.c @@ -299,6 +299,7 @@ struct sock *cookie_v4_check(struct sock *sk, struct sk_buff *skb, ireq->rmt_port = th->source; ireq->loc_addr = ip_hdr(skb)->daddr; ireq->rmt_addr = ip_hdr(skb)->saddr; + ireq->ecn_ok = 0; ireq->snd_wscale = tcp_opt.snd_wscale; ireq->rcv_wscale = tcp_opt.rcv_wscale; ireq->sack_ok = tcp_opt.sack_ok; diff --git a/net/ipv6/syncookies.c b/net/ipv6/syncookies.c index 6a68eeb7bbf8..a46badd1082d 100644 --- a/net/ipv6/syncookies.c +++ b/net/ipv6/syncookies.c @@ -223,6 +223,7 @@ struct sock *cookie_v6_check(struct sock *sk, struct sk_buff *skb) req->expires = 0UL; req->retrans = 0; + ireq->ecn_ok = 0; ireq->snd_wscale = tcp_opt.snd_wscale; ireq->rcv_wscale = tcp_opt.rcv_wscale; ireq->sack_ok = tcp_opt.sack_ok; |