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ipv4: Add support to rtable for ipv6 gateway

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Add support for an IPv6 gateway to rtable. Since a gateway is either
IPv4 or IPv6, make it a union with rt_gw4 where rt_gw_family decides
which address is in use.

When dumping the route data, encode an ipv6 nexthop using RTA_VIA.

Signed-off-by: David Ahern <dsahern@gmail.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Ahern
2019-04-05 16:30:29 -07:00
committed by David S. Miller
parent f35b794b3b
commit 0f5f7d7bf6
5 changed files with 38 additions and 8 deletions
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5
include/net/route.h
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@@ -60,7 +60,10 @@ struct rtable {
int rt_iif;
/* Info on neighbour */
__be32 rt_gw4;
union {
__be32 rt_gw4;
struct in6_addr rt_gw6;
};
/* Miscellaneous cached information */
u32 rt_mtu_locked:1,