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>

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);