Re: [PATCH net-next v2] tcp: Add skb addr and sock addr to arguments of tracepoint tcp_probe.

[Jason Xing]

On Mon, Mar 4, 2024 at 11:46 AM fuyuanli <fuyuanli@xxxxxxxxxxxxxx> 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
> 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.
>
> Signed-off-by: fuyuanli <fuyuanli@xxxxxxxxxxxxxx>
> Link: https://lore.kernel.org/netdev/20240229052813.GA23899@didi-ThinkCentre-M920t-N000/

Reviewed-by: Jason Xing <kerneljasonxing@xxxxxxxxx>