Re: [PATCH net] tcp: fix fastopen code vs usec TS

[patchwork-bot+netdevbpf@kernel.org]

Hello:

This patch was applied to netdev/net.git (main)
by David S. Miller <davem@davemloft.net>:

On Tue, 31 Oct 2023 06:19:45 +0000 you wrote:
> After blamed commit, TFO client-ack-dropped-then-recovery-ms-timestamps
> packetdrill test failed.
> 
> David Morley and Neal Cardwell started investigating and Neal pointed
> that we had :
> 
> tcp_conn_request()
>   tcp_try_fastopen()
>    -> tcp_fastopen_create_child
>      -> child = inet_csk(sk)->icsk_af_ops->syn_recv_sock()
>        -> tcp_create_openreq_child()
>           -> copy req_usec_ts from req:
>           newtp->tcp_usec_ts = treq->req_usec_ts;
>           // now the new TFO server socket always does usec TS, no matter
>           // what the route options are...
>   send_synack()
>     -> tcp_make_synack()
>         // disable tcp_rsk(req)->req_usec_ts if route option is not present:
>         if (tcp_rsk(req)->req_usec_ts < 0)
>                 tcp_rsk(req)->req_usec_ts = dst_tcp_usec_ts(dst);
> 
> [...]

Here is the summary with links:
  - [net] tcp: fix fastopen code vs usec TS
    https://git.kernel.org/netdev/net/c/cdbab6236605

You are awesome, thank you!
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