On Sun, Jul 20, 2025 at 8:16 PM <[email protected]> wrote: > > From: Fan Yu <[email protected]> > > Background > ========== > When TCP retransmits a packet due to missing ACKs, the > retransmission may fail for various reasons (e.g., packets > stuck in driver queues, receiver zero windows, or routing issues). > > The original tcp_retransmit_skb tracepoint: > > 'commit e086101b150a ("tcp: add a tracepoint for tcp retransmission")' > > lacks visibility into these failure causes, making production > diagnostics difficult. > >
> Suggested-by: Jakub Kicinski <[email protected]> > Suggested-by: Eric Dumazet <[email protected]> > Co-developed-by: xu xin <[email protected]> > Signed-off-by: xu xin <[email protected]> > Signed-off-by: Fan Yu <[email protected]> > Reviewed-by: Kuniyuki Iwashima <[email protected]> Please do not add a Suggested-by tag when the original idea did not come from someone else. I only made suggestions to make your patch better. Reviewed-by: Eric Dumazet <[email protected]>
