• Scott Feldman's avatar
    fib: hook IPv4 fib for hardware offload · 8e05fd71
    Scott Feldman authored
    Call into the switchdev driver any time an IPv4 fib entry is
    added/modified/deleted from the kernel's FIB.  The switchdev driver may or
    may not install the route to the offload device.  In the case where the
    driver tries to install the route and something goes wrong (device's routing
    table is full, etc), then all of the offloaded routes will be flushed from the
    device, route forwarding falls back to the kernel, and no more routes are
    offloading.
    
    We can refine this logic later.  For now, use the simplist model of offloading
    routes up to the point of failure, and then on failure, undo everything and
    mark IPv4 offloading disabled.
    Signed-off-by: default avatarScott Feldman <sfeldma@gmail.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    8e05fd71
fib_trie.c 60 KB