[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20240409100934.37725-6-kerneljasonxing@gmail.com>
Date: Tue, 9 Apr 2024 18:09:33 +0800
From: Jason Xing <kerneljasonxing@...il.com>
To: davem@...emloft.net,
edumazet@...gle.com,
kuba@...nel.org,
pabeni@...hat.com,
rostedt@...dmis.org,
mhiramat@...nel.org,
mathieu.desnoyers@...icios.com,
dsahern@...nel.org,
matttbe@...nel.org,
martineau@...nel.org,
geliang@...nel.org
Cc: mptcp@...ts.linux.dev,
linux-trace-kernel@...r.kernel.org,
netdev@...r.kernel.org,
kerneljasonxing@...il.com,
Jason Xing <kernelxing@...cent.com>
Subject: [PATCH net-next v3 5/6] mptcp: support rstreason for passive reset
From: Jason Xing <kernelxing@...cent.com>
It relys on what reset options in the skb are as rfc8684 says. Reusing
this logic can save us much energy. This patch replaces most of the prior
NOT_SPECIFIED reasons.
Signed-off-by: Jason Xing <kernelxing@...cent.com>
---
net/mptcp/subflow.c | 18 +++++++++++++-----
1 file changed, 13 insertions(+), 5 deletions(-)
diff --git a/net/mptcp/subflow.c b/net/mptcp/subflow.c
index ba0a252c113f..4f2be72d5b02 100644
--- a/net/mptcp/subflow.c
+++ b/net/mptcp/subflow.c
@@ -308,8 +308,11 @@ static struct dst_entry *subflow_v4_route_req(const struct sock *sk,
return dst;
dst_release(dst);
- if (!req->syncookie)
- tcp_request_sock_ops.send_reset(sk, skb, SK_RST_REASON_NOT_SPECIFIED);
+ if (!req->syncookie) {
+ struct mptcp_ext *mpext = mptcp_get_ext(skb);
+
+ tcp_request_sock_ops.send_reset(sk, skb, mpext->reset_reason);
+ }
return NULL;
}
@@ -375,8 +378,11 @@ static struct dst_entry *subflow_v6_route_req(const struct sock *sk,
return dst;
dst_release(dst);
- if (!req->syncookie)
- tcp6_request_sock_ops.send_reset(sk, skb, SK_RST_REASON_NOT_SPECIFIED);
+ if (!req->syncookie) {
+ struct mptcp_ext *mpext = mptcp_get_ext(skb);
+
+ tcp6_request_sock_ops.send_reset(sk, skb, mpext->reset_reason);
+ }
return NULL;
}
#endif
@@ -783,6 +789,7 @@ static struct sock *subflow_syn_recv_sock(const struct sock *sk,
bool fallback, fallback_is_fatal;
struct mptcp_sock *owner;
struct sock *child;
+ int reason;
pr_debug("listener=%p, req=%p, conn=%p", listener, req, listener->conn);
@@ -911,7 +918,8 @@ static struct sock *subflow_syn_recv_sock(const struct sock *sk,
tcp_rsk(req)->drop_req = true;
inet_csk_prepare_for_destroy_sock(child);
tcp_done(child);
- req->rsk_ops->send_reset(sk, skb, SK_RST_REASON_NOT_SPECIFIED);
+ reason = mptcp_get_ext(skb)->reset_reason;
+ req->rsk_ops->send_reset(sk, skb, convert_mptcp_reason(reason));
/* The last child reference will be released by the caller */
return child;
--
2.37.3
Powered by blists - more mailing lists