netdev - [PATCH bpf 0/2] Two fixes for cpu-map

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Message-Id: <20230729095107.1722450-1-houtao@huaweicloud.com>
Date: Sat, 29 Jul 2023 17:51:05 +0800
From: Hou Tao <houtao@...weicloud.com>
To: bpf@...r.kernel.org
Cc: netdev@...r.kernel.org,
	"David S . Miller" <davem@...emloft.net>,
	Jakub Kicinski <kuba@...nel.org>,
	Jesper Dangaard Brouer <hawk@...nel.org>,
	John Fastabend <john.fastabend@...il.com>,
	Björn Töpel <bjorn.topel@...il.com>,
	Toke Høiland-Jørgensen <toke@...hat.com>,
	Martin KaFai Lau <martin.lau@...ux.dev>,
	Alexei Starovoitov <alexei.starovoitov@...il.com>,
	Andrii Nakryiko <andrii@...nel.org>,
	Song Liu <song@...nel.org>,
	Hao Luo <haoluo@...gle.com>,
	Yonghong Song <yonghong.song@...ux.dev>,
	Daniel Borkmann <daniel@...earbox.net>,
	KP Singh <kpsingh@...nel.org>,
	Stanislav Fomichev <sdf@...gle.com>,
	Jiri Olsa <jolsa@...nel.org>,
	Pu Lehui <pulehui@...wei.com>,
	houtao1@...wei.com
Subject: [PATCH bpf 0/2] Two fixes for cpu-map

From: Hou Tao <houtao1@...wei.com>

Hi,

The patchset fixes two reported warning in cpu-map when running
xdp_redirect_cpu and some RT threads concurrently. Patch #1 fixes
the warning in __cpu_map_ring_cleanup() when kthread is stopped
prematurely. Patch #2 fixes the warning in __xdp_return() when
there are pending skbs in ptr_ring.

Please see individual patches for more details. And comments are always
welcome.

Regards,
Tao

Hou Tao (2):
  bpf, cpumap: Make sure kthread is running before map update returns
  bpf, cpumap: Handle skb as well when clean up ptr_ring

 kernel/bpf/cpumap.c | 35 +++++++++++++++++++++--------------
 1 file changed, 21 insertions(+), 14 deletions(-)

-- 
2.29.2