• Eric Dumazet's avatar
    net: restore tx timestamping for accelerated vlans · d649563d
    Eric Dumazet authored
    [ Upstream commit 81bbb3d4 ]
    
    Since commit 9b22ea56
    ( net: fix packet socket delivery in rx irq handler )
    
    We lost rx timestamping of packets received on accelerated vlans.
    
    Effect is that tcpdump on real dev can show strange timings, since it gets rx timestamps
    too late (ie at skb dequeueing time, not at skb queueing time)
    
    14:47:26.986871 IP 192.168.20.110 > 192.168.20.141: icmp 64: echo request seq 1
    14:47:26.986786 IP 192.168.20.141 > 192.168.20.110: icmp 64: echo reply seq 1
    
    14:47:27.986888 IP 192.168.20.110 > 192.168.20.141: icmp 64: echo request seq 2
    14:47:27.986781 IP 192.168.20.141 > 192.168.20.110: icmp 64: echo reply seq 2
    
    14:47:28.986896 IP 192.168.20.110 > 192.168.20.141: icmp 64: echo request seq 3
    14:47:28.986780 IP 192.168.20.141 > 192.168.20.110: icmp 64: echo reply seq 3
    Signed-off-by: default avatarEric Dumazet <eric.dumazet@gmail.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
    d649563d
dev.c 136 KB