Messages in this thread | ![/](/images/icornerl.gif) | | From | yuanli fu <> | Date | Mon, 4 Mar 2024 16:30:16 +0800 | Subject | Re: [PATCH net-next v2] tcp: Add skb addr and sock addr to arguments of tracepoint tcp_probe. |
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Eric Dumazet <edumazet@google.com> 于2024年3月4日周一 16:13写道: > > On Mon, Mar 4, 2024 at 4:46 AM fuyuanli <fuyuanli@didiglobal.com> wrote: > > > > It is useful to expose skb addr and sock addr to user in tracepoint > > tcp_probe, so that we can get more information while monitoring > > receiving of tcp data, by ebpf or other ways. > > > > For example, we need to identify a packet by seq and end_seq when > > calculate transmit latency between lay 2 and lay 4 by ebpf, but which is > > Please use "layer 2 and layer 4". > > > not available in tcp_probe, so we can only use kprobe hooking > > tcp_rcv_esatblised to get them. But we can use tcp_probe directly if skb > > addr and sock addr are available, which is more efficient. > > Okay, but please fix the typo. Correct function name is tcp_rcv_established > > > > > Signed-off-by: fuyuanli <fuyuanli@didiglobal.com> > > Link: https://lore.kernel.org/netdev/20240229052813.GA23899@didi-ThinkCentre-M920t-N000/ > > > OK, I will submit a v3 patch, thanks for your review :) fuyuanli
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