diff options
| author |   Eric Dumazet <edumazet@google.com> | 2015-10-02 11:43:25 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2015-10-03 04:32:37 -0700 |
| commit | 8d2675f1e464aa5cedda63849adecffd8d33fead (patch) | |
| tree | e1d28155d25be1e48275152f6703b0f4cecf6911 /net/ipv4/tcp_input.c | |
| parent | tcp: move qlen/young out of struct listen_sock (diff) | |
| download | linux-dev-8d2675f1e464aa5cedda63849adecffd8d33fead.tar.xz linux-dev-8d2675f1e464aa5cedda63849adecffd8d33fead.zip | |
tcp: move synflood_warned into struct request_sock_queue
long term plan is to remove struct listen_sock when its hash
table is no longer there.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
| -rw-r--r-- | net/ipv4/tcp_input.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index e58cbcd2f07e..8b0ce73c2049 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -6068,9 +6068,9 @@ static bool tcp_syn_flood_action(const struct sock *sk, const struct sk_buff *skb, const char *proto) { + struct request_sock_queue *queue = &inet_csk(sk)->icsk_accept_queue; const char *msg = "Dropping request"; bool want_cookie = false; - struct listen_sock *lopt; #ifdef CONFIG_SYN_COOKIES if (sysctl_tcp_syncookies) { @@ -6081,10 +6081,9 @@ static bool tcp_syn_flood_action(const struct sock *sk, #endif NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPREQQFULLDROP); - lopt = inet_csk(sk)->icsk_accept_queue.listen_opt; - if (!lopt->synflood_warned && + if (!queue->synflood_warned && sysctl_tcp_syncookies != 2 && - xchg(&lopt->synflood_warned, 1) == 0) + xchg(&queue->synflood_warned, 1) == 0) pr_info("%s: Possible SYN flooding on port %d. %s. Check SNMP counters.\n", proto, ntohs(tcp_hdr(skb)->dest), msg); |