• Eric Dumazet's avatar
    tcp: honor SO_PRIORITY in TIME_WAIT state · f6c0f5d2
    Eric Dumazet authored
    
    
    ctl packets sent on behalf of TIME_WAIT sockets currently
    have a zero skb->priority, which can cause various problems.
    
    In this patch we :
    
    - add a tw_priority field in struct inet_timewait_sock.
    
    - populate it from sk->sk_priority when a TIME_WAIT is created.
    
    - For IPv4, change ip_send_unicast_reply() and its two
      callers to propagate tw_priority correctly.
      ip_send_unicast_reply() no longer changes sk->sk_priority.
    
    - For IPv6, make sure TIME_WAIT sockets pass their tw_priority
      field to tcp_v6_send_response() and tcp_v6_send_ack().
    Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    f6c0f5d2