From: Eric Dumazet <[email protected]> Date: Mon, 16 Oct 2017 19:38:35 -0700
> From: Eric Dumazet <[email protected]> > > I tried to hard avoiding a call to rb_first() (via tcp_rtx_queue_head) > in tcp_xmit_retransmit_queue(). But this was probably too bold. > > Quoting Yuchung : > > We might miss re-arming the RTO if tp->retransmit_skb_hint is not NULL. > This can happen when RACK marks the first packet lost again and resets > tp->retransmit_skb_hint for example (tcp_rack_mark_skb_lost()) > > Fixes: 75c119afe14f ("tcp: implement rb-tree based retransmit queue") > Signed-off-by: Eric Dumazet <[email protected]> > Reported-by: Yuchung Cheng <[email protected]> Applied.
