From: John Fastabend <john.fastabend@gmail.com>
To: Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Jakub Kicinski <kuba@kernel.org>
Cc: netdev@vger.kernel.org, bpf@vger.kernel.org,
"David S. Miller" <davem@davemloft.net>,
"Björn Töpel" <bjorn@kernel.org>,
"Alexei Starovoitov" <ast@kernel.org>,
"Andrii Nakryiko" <andrii@kernel.org>,
"Daniel Borkmann" <daniel@iogearbox.net>,
"Eric Dumazet" <edumazet@google.com>,
"Hao Luo" <haoluo@google.com>,
"Jesper Dangaard Brouer" <hawk@kernel.org>,
"Jiri Olsa" <jolsa@kernel.org>,
"John Fastabend" <john.fastabend@gmail.com>,
"Jonathan Lemon" <jonathan.lemon@gmail.com>,
"KP Singh" <kpsingh@kernel.org>,
"Maciej Fijalkowski" <maciej.fijalkowski@intel.com>,
"Magnus Karlsson" <magnus.karlsson@intel.com>,
"Martin KaFai Lau" <martin.lau@linux.dev>,
"Paolo Abeni" <pabeni@redhat.com>, "Song Liu" <song@kernel.org>,
"Stanislav Fomichev" <sdf@google.com>,
"Thomas Gleixner" <tglx@linutronix.de>,
"Yonghong Song" <yonghong.song@linux.dev>,
"Toke Høiland-Jørgensen" <toke@redhat.com>
Subject: RE: [PATCH bpf-next -v4] net: Add a warning if NAPI cb missed xdp_do_flush().
Date: Tue, 10 Oct 2023 21:42:27 -0700 [thread overview]
Message-ID: <652627b386bbe_2d55e208d6@john.notmuch> (raw)
In-Reply-To: <20231010065745.lJLYdf_X@linutronix.de>
Sebastian Andrzej Siewior wrote:
> A few drivers were missing a xdp_do_flush() invocation after
> XDP_REDIRECT.
>
> Add three helper functions each for one of the per-CPU lists. Return
> true if the per-CPU list is non-empty and flush the list.
> Add xdp_do_check_flushed() which invokes each helper functions and
> creates a warning if one of the functions had a non-empty list.
> Hide everything behind CONFIG_DEBUG_NET.
>
> Suggested-by: Jesper Dangaard Brouer <hawk@kernel.org>
> Reviewed-by: Toke Høiland-Jørgensen <toke@redhat.com>
> Acked-by: Jakub Kicinski <kuba@kernel.org>
> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
> ---
LGTM.
Acked-by: John Fastabend <john.fastabend@gmail.com>
next prev parent reply other threads:[~2023-10-11 4:42 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-29 16:58 [PATCH bpf-next] net: Add a warning if NAPI cb missed xdp_do_flush() Sebastian Andrzej Siewior
2023-09-29 17:52 ` Toke Høiland-Jørgensen
2023-10-04 14:09 ` Jakub Kicinski
2023-10-06 15:49 ` [PATCH bpf-next v2] " Sebastian Andrzej Siewior
2023-10-06 17:21 ` kernel test robot
2023-10-06 19:31 ` Jakub Kicinski
2023-10-07 15:43 ` [PATCH bpf-next v3] " Sebastian Andrzej Siewior
2023-10-10 6:57 ` [PATCH bpf-next -v4] " Sebastian Andrzej Siewior
2023-10-11 4:42 ` John Fastabend [this message]
2023-10-16 11:56 ` Daniel Borkmann
2023-10-16 12:57 ` [PATCH bpf-next -v5] " Sebastian Andrzej Siewior
2023-10-17 13:10 ` patchwork-bot+netdevbpf
2023-10-08 13:48 ` [PATCH bpf-next v2] " Simon Horman
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