• Eric Dumazet's avatar
    net: TCP early demux cleanup · cca32e4b
    Eric Dumazet authored
    early_demux() handlers should be called in RCU context, and as we
    use skb_dst_set_noref(skb, dst), caller must not exit from RCU context
    before dst use (skb_dst(skb)) or release (skb_drop(dst))
    
    Therefore, rcu_read_lock()/rcu_read_unlock() pairs around
    ->early_demux() are confusing and not needed :
    
    Protocol handlers are already in an RCU read lock section.
    (__netif_receive_skb() does the rcu_read_lock() )
    Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    cca32e4b
ip_input.c 13.1 KB