diff options
Diffstat (limited to 'net/ipv4/tcp_input.c')
| -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); |
