From: menglong8.dong@gmail.com
To: rostedt@goodmis.org, dsahern@kernel.org
Cc: mingo@redhat.com, davem@davemloft.net, kuba@kernel.org,
nhorman@tuxdriver.com, edumazet@google.com,
yoshfuji@linux-ipv6.org, jonathan.lemon@gmail.com,
alobakin@pm.me, cong.wang@bytedance.com, pabeni@redhat.com,
talalahmad@google.com, haokexin@gmail.com, keescook@chromium.org,
imagedong@tencent.com, atenart@kernel.org, bigeasy@linutronix.de,
weiwan@google.com, arnd@arndb.de, vvs@virtuozzo.com,
linux-kernel@vger.kernel.org, netdev@vger.kernel.org
Subject: [PATCH net-next 0/2] net: skb: introduce kfree_skb_with_reason()
Date: Wed, 29 Dec 2021 22:32:03 +0800 [thread overview]
Message-ID: <20211229143205.410731-1-imagedong@tencent.com> (raw)
From: Menglong Dong <imagedong@tencent.com>
In this series patch, the interface kfree_skb_with_reason() is
introduced(), which is used to collect skb drop reason, and pass
it to 'kfree_skb' tracepoint. Therefor, 'drop_monitor' or eBPF is
able to monitor abnormal skb with detail reason.
In fact, this series patches are out of the intelligence of David
and Steve, I'm just a truck man :/
Previous discussion is here:
https://lore.kernel.org/netdev/20211118105752.1d46e990@gandalf.local.home/
https://lore.kernel.org/netdev/67b36bd8-2477-88ac-83a0-35a1eeaf40c9@gmail.com/
In the first patch, kfree_skb_with_reason() is introduced and
the 'reason' field is added to 'kfree_skb' tracepoint. In the
second patch, 'kfree_skb()' in replaced with 'kfree_skb_with_reason()'
in tcp_v4_rcv().
Menglong Dong (2):
net: skb: introduce kfree_skb_with_reason()
net: skb: use kfree_skb_with_reason() in tcp_v4_rcv()
include/linux/skbuff.h | 16 ++++++++++++++++
include/trace/events/skb.h | 39 +++++++++++++++++++++++++++++++-------
net/core/dev.c | 3 ++-
net/core/drop_monitor.c | 10 +++++++---
net/core/skbuff.c | 22 ++++++++++++++++++++-
net/ipv4/tcp_ipv4.c | 10 ++++++++--
6 files changed, 86 insertions(+), 14 deletions(-)
--
2.27.0
next reply other threads:[~2021-12-29 14:32 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-29 14:32 menglong8.dong [this message]
2021-12-29 14:32 ` [PATCH net-next 1/2] net: skb: introduce kfree_skb_with_reason() menglong8.dong
2021-12-29 14:32 ` [PATCH net-next 2/2] net: skb: use kfree_skb_with_reason() in tcp_v4_rcv() menglong8.dong
2021-12-29 20:18 ` David Ahern
2021-12-30 2:36 ` Menglong Dong
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