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Diffstat (limited to 'net/ipv4/tcp_input.c')
-rw-r--r--net/ipv4/tcp_input.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 74c03f0a6c0c..83308cca1610 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -6361,6 +6361,7 @@ static int tcp_rcv_synsent_state_process(struct sock *sk, struct sk_buff *skb,
inet_csk_reset_xmit_timer(sk,
ICSK_TIME_RETRANS,
TCP_TIMEOUT_MIN, TCP_RTO_MAX);
+ SKB_DR_SET(reason, TCP_INVALID_ACK_SEQUENCE);
goto reset_and_undo;
}
@@ -6369,6 +6370,7 @@ static int tcp_rcv_synsent_state_process(struct sock *sk, struct sk_buff *skb,
tcp_time_stamp_ts(tp))) {
NET_INC_STATS(sock_net(sk),
LINUX_MIB_PAWSACTIVEREJECTED);
+ SKB_DR_SET(reason, TCP_RFC7323_PAWS);
goto reset_and_undo;
}
@@ -6572,7 +6574,8 @@ discard_and_undo:
reset_and_undo:
tcp_clear_options(&tp->rx_opt);
tp->rx_opt.mss_clamp = saved_clamp;
- return 1;
+ /* we can reuse/return @reason to its caller to handle the exception */
+ return reason;
}
static void tcp_rcv_synrecv_state_fastopen(struct sock *sk)