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| author | Gilad Ben-Yossef <gilad@codefidence.com> | 2009-10-28 04:15:24 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-10-29 01:28:44 -0700 |
| commit | 1aba721eba1d84a2defce45b950272cee1e6c72a (patch) | |
| tree | 73a882e5147cd7384bea0533dea8b2a5f51ad325 /net/ipv4/tcp_input.c | |
| parent | 0c3adfb8ec9f85a63556b70f11e0fcf280545951 (diff) | |
| download | lwn-1aba721eba1d84a2defce45b950272cee1e6c72a.tar.gz lwn-1aba721eba1d84a2defce45b950272cee1e6c72a.zip | |
Add the no SACK route option feature
Implement querying and acting upon the no sack bit in the features
field.
Signed-off-by: Gilad Ben-Yossef <gilad@codefidence.com>
Sigend-off-by: Ori Finkelman <ori@comsleep.com>
Sigend-off-by: Yony Amit <yony@comsleep.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_input.c')
| -rw-r--r-- | net/ipv4/tcp_input.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index c7625005486d..5fb25f977451 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -3763,7 +3763,8 @@ void tcp_parse_options(struct sk_buff *skb, struct tcp_options_received *opt_rx, break; case TCPOPT_SACK_PERM: if (opsize == TCPOLEN_SACK_PERM && th->syn && - !estab && sysctl_tcp_sack) { + !estab && sysctl_tcp_sack && + !dst_feature(dst, RTAX_FEATURE_NO_SACK)) { opt_rx->sack_ok = 1; tcp_sack_reset(opt_rx); } |