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authorHannes Frederic Sowa <hannes@stressinduktion.org>2013-01-05 20:10:48 +0400
committerDavid S. Miller <davem@davemloft.net>2013-01-07 09:09:56 +0400
commit5d134f1c1f36166e8a738de92c4d2f4c262ff91b (patch)
tree6d1504359c7f1ade1c79da0e468a2a409af5c56c /include/net/tcp.h
parent71bcdba06db91ceaaffe019b6c958b5faf06012a (diff)
downloadlinux-5d134f1c1f36166e8a738de92c4d2f4c262ff91b.tar.xz
tcp: make sysctl_tcp_ecn namespace aware
As per suggestion from Eric Dumazet this patch makes tcp_ecn sysctl namespace aware. The reason behind this patch is to ease the testing of ecn problems on the internet and allows applications to tune their own use of ecn. Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: David Miller <davem@davemloft.net> Cc: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/tcp.h')
-rw-r--r--include/net/tcp.h9
1 files changed, 5 insertions, 4 deletions
diff --git a/include/net/tcp.h b/include/net/tcp.h
index aed42c785153..614af8b7758e 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -266,7 +266,6 @@ extern int sysctl_tcp_abort_on_overflow;
extern int sysctl_tcp_max_orphans;
extern int sysctl_tcp_fack;
extern int sysctl_tcp_reordering;
-extern int sysctl_tcp_ecn;
extern int sysctl_tcp_dsack;
extern int sysctl_tcp_wmem[3];
extern int sysctl_tcp_rmem[3];
@@ -504,7 +503,8 @@ static inline __u32 cookie_v4_init_sequence(struct sock *sk,
#endif
extern __u32 cookie_init_timestamp(struct request_sock *req);
-extern bool cookie_check_timestamp(struct tcp_options_received *opt, bool *);
+extern bool cookie_check_timestamp(struct tcp_options_received *opt,
+ struct net *net, bool *ecn_ok);
/* From net/ipv6/syncookies.c */
extern struct sock *cookie_v6_check(struct sock *sk, struct sk_buff *skb);
@@ -728,11 +728,12 @@ struct tcp_skb_cb {
* notifications, we disable TCP ECN negociation.
*/
static inline void
-TCP_ECN_create_request(struct request_sock *req, const struct sk_buff *skb)
+TCP_ECN_create_request(struct request_sock *req, const struct sk_buff *skb,
+ struct net *net)
{
const struct tcphdr *th = tcp_hdr(skb);
- if (sysctl_tcp_ecn && th->ece && th->cwr &&
+ if (net->ipv4.sysctl_tcp_ecn && th->ece && th->cwr &&
INET_ECN_is_not_ect(TCP_SKB_CB(skb)->ip_dsfield))
inet_rsk(req)->ecn_ok = 1;
}