• Sabrina Dubroca's avatar
    benet: stricter vxlan offloading check in be_features_check · 096de2f8
    Sabrina Dubroca authored
    When VXLAN offloading is enabled, be_features_check() tries to check if
    an encapsulated packet is indeed a VXLAN packet. The check is not strict
    enough, and considers any UDP-encapsulated ethernet frame with a 8-byte
    tunnel header as being VXLAN. Unfortunately, both GENEVE and VXLAN-GPE
    have a 8-byte header, so they get through this check.
    
    Force the UDP destination port to be the one that has been offloaded to
    hardware.
    
    Without this, GENEVE-encapsulated packets can end up having an incorrect
    checksum when both a GENEVE and a VXLAN (offloaded) tunnel are
    configured.
    
    This is similar to commit a547224d ("mlx4e: Do not attempt to
    offload VXLAN ports that are unrecognized").
    Signed-off-by: default avatarSabrina Dubroca <sd@queasysnail.net>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    096de2f8
be_main.c 160 KB