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ipv4: Prepare rtable for IPv6 gateway

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To allow the gateway to be either an IPv4 or IPv6 address, remove
rt_uses_gateway from rtable and replace with rt_gw_family. If
rt_gw_family is set it implies rt_uses_gateway. Rename rt_gateway
to rt_gw4 to represent the IPv4 version.

Signed-off-by: David Ahern <[email protected]>
Reviewed-by: Ido Schimmel <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
David Ahern 2019-04-05 16:30:27 -07:00 • committed by David S. Miller
commit 1550c17193
13 changed files with 57 additions and 45 deletions
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11
net/mpls/mpls_iptunnel.c
View file

@ -137,10 +137,13 @@ static int mpls_xmit(struct sk_buff *skb)
mpls_stats_inc_outucastpkts(out_dev, skb);
if (rt)
err = neigh_xmit(NEIGH_ARP_TABLE, out_dev, &rt->rt_gateway,
skb);
else if (rt6) {
if (rt) {
if (rt->rt_gw_family == AF_INET)
err = neigh_xmit(NEIGH_ARP_TABLE, out_dev, &rt->rt_gw4,
skb);
else
err = -EAFNOSUPPORT;
} else if (rt6) {
if (ipv6_addr_v4mapped(&rt6->rt6i_gateway)) {
/* 6PE (RFC 4798) */
err = neigh_xmit(NEIGH_ARP_TABLE, out_dev, &rt6->rt6i_gateway.s6_addr32[3],