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Diffstat (limited to 'net/ipv4/tcp_minisocks.c')
-rw-r--r--net/ipv4/tcp_minisocks.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c
index 46c86c4f80e9..ba4a5d7f251d 100644
--- a/net/ipv4/tcp_minisocks.c
+++ b/net/ipv4/tcp_minisocks.c
@@ -809,10 +809,15 @@ struct sock *tcp_check_req(struct sock *sk, struct sk_buff *skb,
LINUX_MIB_TCPACKSKIPPEDSYNRECV,
&tcp_rsk(req)->last_oow_ack_time))
req->rsk_ops->send_ack(sk, skb, req);
- if (paws_reject)
+ if (paws_reject) {
+ SKB_DR_SET(*drop_reason, TCP_RFC7323_PAWS);
NET_INC_STATS(sock_net(sk), LINUX_MIB_PAWSESTABREJECTED);
- else if (tsecr_reject)
+ } else if (tsecr_reject) {
+ SKB_DR_SET(*drop_reason, TCP_RFC7323_TSECR);
NET_INC_STATS(sock_net(sk), LINUX_MIB_TSECRREJECTED);
+ } else {
+ SKB_DR_SET(*drop_reason, TCP_OVERWINDOW);
+ }
return NULL;
}
@@ -882,6 +887,7 @@ struct sock *tcp_check_req(struct sock *sk, struct sk_buff *skb,
return inet_csk_complete_hashdance(sk, child, req, own_req);
listen_overflow:
+ SKB_DR_SET(*drop_reason, TCP_LISTEN_OVERFLOW);
if (sk != req->rsk_listener)
__NET_INC_STATS(sock_net(sk), LINUX_MIB_TCPMIGRATEREQFAILURE);