Having iplink_parse() and @struct iplink_req in include/utils.h does not
reflect it's IP nature: move to ip/ip_common.h.
Move contents of ip/iplink_xdp.h and ip/iproute_lwtunnel.h to
ip/ip_common.h since they are small (i.e. only two function prototypes):
ip/iplink_bridge.c and ip/iplink_vrf.c prototypes already there.
Signed-off-by: Serhey Popovych <serhe.popovych@gmail.com>
Signed-off-by: David Ahern <dsahern@gmail.com>
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