From: Jianguo Wu <wujianguo106@163.com>
To: mptcp@lists.linux.dev
Subject: [PATCH v2 4/4] mptcp: avoid processing packet if a subflow reset
Date: Thu, 10 Jun 2021 17:28:52 +0800 [thread overview]
Message-ID: <2a904c11-f78d-a493-2e4c-c5d320961ce1@163.com> (raw)
From: Jianguo Wu <wujianguo@chinatelecom.cn>
If check_fully_established() causes a subflow reset, it should not
continue to process the packet in tcp_data_queue().
setting:
TCP_SKB_CB(skb)->end_seq = TCP_SKB_CB(skb)->seq;
so that the following check will drop the pkt in
tcp_data_queue():
if (TCP_SKB_CB(skb)->seq == TCP_SKB_CB(skb)->end_seq) {
__kfree_skb(skb);
return;
}
Signed-off-by: Jianguo Wu <wujianguo@chinatelecom.cn>
---
net/mptcp/options.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/net/mptcp/options.c b/net/mptcp/options.c
index 1aec016..01a1bf6 100644
--- a/net/mptcp/options.c
+++ b/net/mptcp/options.c
@@ -926,6 +926,8 @@ static bool check_fully_established(struct mptcp_sock *msk, struct sock *ssk,
return true;
reset:
+ TCP_SKB_CB(skb)->end_seq = TCP_SKB_CB(skb)->seq;
+
mptcp_subflow_reset(ssk);
return false;
}
--
1.8.3.1
next reply other threads:[~2021-06-10 9:28 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-10 9:28 Jianguo Wu [this message]
2021-06-10 10:22 ` [PATCH v2 4/4] mptcp: avoid processing packet if a subflow reset Paolo Abeni
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=2a904c11-f78d-a493-2e4c-c5d320961ce1@163.com \
--to=wujianguo106@163.com \
--cc=mptcp@lists.linux.dev \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.