• Daniel Borkmann's avatar
    net: sctp: confirm route during forward progress · 8c2f414a
    Daniel Borkmann authored
    
    
    This fix has been proposed originally by Vlad Yasevich. He says:
    
      When SCTP makes forward progress (receives a SACK that acks new chunks,
      renegs, or answeres 0-window probes) or when HB-ACK arrives, mark
      the route as confirmed so we don't unnecessarily send NUD probes.
    
    Having a simple SCTP client/server that exchange data chunks every 1sec,
    without this patch ARP requests are sent periodically every 40-60sec.
    With this fix applied, an ARP request is only done once right at the
    "session" beginning. Also, when clearing the related ARP cache entry
    manually during the session, a new request is correctly done. I have
    only "backported" this to net-next and tested that it works, so full
    credit goes to Vlad.
    Signed-off-by: default avatarVlad Yasevich <vyasevich@gmail.com>
    Signed-off-by: default avatarDaniel Borkmann <dborkman@redhat.com>
    Acked-by: default avatarNeil Horman <nhorman@tuxdriver.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    8c2f414a
outqueue.c 52.5 KB