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| author | Jason Xing <kernelxing@tencent.com> | 2024-08-02 18:21:10 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2024-08-07 10:24:45 +0100 |
| commit | 0a399892a596055c8f069a17b4775fe5ab66d32a (patch) | |
| tree | 9fc963ab93336071a3315a8290baabfdadfab50a | |
| parent | edefba66d929eb2d023df93a0a8175a4ffe82684 (diff) | |
| download | lwn-0a399892a596055c8f069a17b4775fe5ab66d32a.tar.gz lwn-0a399892a596055c8f069a17b4775fe5ab66d32a.zip | |
tcp: rstreason: introduce SK_RST_REASON_TCP_KEEPALIVE_TIMEOUT for active reset
Introducing this to show the users the reason of keepalive timeout.
Signed-off-by: Jason Xing <kernelxing@tencent.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/net/rstreason.h | 7 | ||||
| -rw-r--r-- | net/ipv4/tcp_timer.c | 2 |
2 files changed, 8 insertions, 1 deletions
diff --git a/include/net/rstreason.h b/include/net/rstreason.h index bbf20d0bbde7..9c0c46df0e73 100644 --- a/include/net/rstreason.h +++ b/include/net/rstreason.h @@ -21,6 +21,7 @@ FN(TCP_ABORT_ON_LINGER) \ FN(TCP_ABORT_ON_MEMORY) \ FN(TCP_STATE) \ + FN(TCP_KEEPALIVE_TIMEOUT) \ FN(MPTCP_RST_EUNSPEC) \ FN(MPTCP_RST_EMPTCP) \ FN(MPTCP_RST_ERESOURCE) \ @@ -108,6 +109,12 @@ enum sk_rst_reason { * Please see RFC 9293 for all possible reset conditions */ SK_RST_REASON_TCP_STATE, + /** + * @SK_RST_REASON_TCP_KEEPALIVE_TIMEOUT: time to timeout + * When we have already run out of all the chances, which means + * keepalive timeout, we have to reset the connection + */ + SK_RST_REASON_TCP_KEEPALIVE_TIMEOUT, /* Copy from include/uapi/linux/mptcp.h. * These reset fields will not be changed since they adhere to diff --git a/net/ipv4/tcp_timer.c b/net/ipv4/tcp_timer.c index 3910f6d8614e..86169127e4d1 100644 --- a/net/ipv4/tcp_timer.c +++ b/net/ipv4/tcp_timer.c @@ -807,7 +807,7 @@ static void tcp_keepalive_timer (struct timer_list *t) (user_timeout == 0 && icsk->icsk_probes_out >= keepalive_probes(tp))) { tcp_send_active_reset(sk, GFP_ATOMIC, - SK_RST_REASON_NOT_SPECIFIED); + SK_RST_REASON_TCP_KEEPALIVE_TIMEOUT); tcp_write_err(sk); goto out; } |