• Tom Herbert's avatar
    net: Move fou_build_header into fou.c and refactor · 63487bab
    Tom Herbert authored
    Move fou_build_header out of ip_tunnel.c and into fou.c splitting
    it up into fou_build_header, gue_build_header, and fou_build_udp.
    This allows for other users for TX of FOU or GUE. Change ip_tunnel_encap
    to call fou_build_header or gue_build_header based on the tunnel
    encapsulation type. Similarly, added fou_encap_hlen and gue_encap_hlen
    functions which are called by ip_encap_hlen. New net/fou.h has
    prototypes and defines for this.
    
    Added NET_FOU_IP_TUNNELS configuration. When this is set, IP tunnels
    can use FOU/GUE and fou module is also selected.
    Signed-off-by: default avatarTom Herbert <therbert@google.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    63487bab
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