• Eric W. Biederman's avatar
    netns: Remove net_alive · 17edde52
    Eric W. Biederman authored
    It turns out that net_alive is unnecessary, and the original problem
    that led to it being added was simply that the icmp code thought
    it was a network device and wound up being unable to handle packets
    while there were still packets in the network namespace.
    Now that icmp and tcp have been fixed to properly register themselves
    this problem is no longer present and we have a stronger guarantee
    that packets will not arrive in a network namespace then that provided
    by net_alive in netif_receive_skb.  So remove net_alive allowing
    packet reception run a little faster.
    Additionally document the strong reason why network namespace cleanup
    is safe so that if something happens again someone else will have
    a chance of figuring it out.
    Signed-off-by: default avatarEric W. Biederman <ebiederm@aristanetworks.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
net_namespace.h 6.23 KB