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authorDavid Ahern <dsahern@gmail.com>2019-04-02 14:11:58 -0700
committerDavid S. Miller <davem@davemloft.net>2019-04-03 21:50:20 -0700
commitc0a720770c01e67374b15f348f17a52409f6545c (patch)
tree8443d516118be1f5b675e0f21ff8ec648a9cbcb8 /net/ipv6/route.c
parentc236419981224d37a5d0a6e7781f73479d4a030e (diff)
downloadlinux-c0a720770c01e67374b15f348f17a52409f6545c.tar.gz
ipv6: Flip to fib_nexthop_info
Export fib_nexthop_info and fib_add_nexthop for use by IPv6 code. Remove rt6_nexthop_info and rt6_add_nexthop in favor of the IPv4 versions. Update fib_nexthop_info for IPv6 linkdown check and RTA_GATEWAY for AF_INET6. Signed-off-by: David Ahern <dsahern@gmail.com> Acked-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/route.c')
-rw-r--r--net/ipv6/route.c77
1 files changed, 6 insertions, 71 deletions
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index e0ee30cbd079..6e89151693d0 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -4582,73 +4582,6 @@ static size_t rt6_nlmsg_size(struct fib6_info *rt)
+ nexthop_len;
}
-static int rt6_nexthop_info(struct sk_buff *skb, const struct fib6_nh *fib6_nh,
- unsigned int *flags, bool skip_oif)
-{
- if (fib6_nh->fib_nh_flags & RTNH_F_DEAD)
- *flags |= RTNH_F_DEAD;
-
- if (fib6_nh->fib_nh_flags & RTNH_F_LINKDOWN) {
- *flags |= RTNH_F_LINKDOWN;
-
- rcu_read_lock();
- if (ip6_ignore_linkdown(fib6_nh->fib_nh_dev))
- *flags |= RTNH_F_DEAD;
- rcu_read_unlock();
- }
-
- if (fib6_nh->fib_nh_has_gw) {
- if (nla_put_in6_addr(skb, RTA_GATEWAY, &fib6_nh->fib_nh_gw6) < 0)
- goto nla_put_failure;
- }
-
- *flags |= (fib6_nh->fib_nh_flags & RTNH_F_ONLINK);
- if (fib6_nh->fib_nh_flags & RTNH_F_OFFLOAD)
- *flags |= RTNH_F_OFFLOAD;
-
- /* not needed for multipath encoding b/c it has a rtnexthop struct */
- if (!skip_oif && fib6_nh->fib_nh_dev &&
- nla_put_u32(skb, RTA_OIF, fib6_nh->fib_nh_dev->ifindex))
- goto nla_put_failure;
-
- if (fib6_nh->fib_nh_lws &&
- lwtunnel_fill_encap(skb, fib6_nh->fib_nh_lws) < 0)
- goto nla_put_failure;
-
- return 0;
-
-nla_put_failure:
- return -EMSGSIZE;
-}
-
-/* add multipath next hop */
-static int rt6_add_nexthop(struct sk_buff *skb, const struct fib6_nh *fib6_nh)
-{
- const struct net_device *dev = fib6_nh->fib_nh_dev;
- struct rtnexthop *rtnh;
- unsigned int flags = 0;
-
- rtnh = nla_reserve_nohdr(skb, sizeof(*rtnh));
- if (!rtnh)
- goto nla_put_failure;
-
- rtnh->rtnh_hops = fib6_nh->fib_nh_weight - 1;
- rtnh->rtnh_ifindex = dev ? dev->ifindex : 0;
-
- if (rt6_nexthop_info(skb, fib6_nh, &flags, true) < 0)
- goto nla_put_failure;
-
- rtnh->rtnh_flags = flags;
-
- /* length of rtnetlink header + attributes */
- rtnh->rtnh_len = nlmsg_get_pos(skb) - (void *)rtnh;
-
- return 0;
-
-nla_put_failure:
- return -EMSGSIZE;
-}
-
static int rt6_fill_node(struct net *net, struct sk_buff *skb,
struct fib6_info *rt, struct dst_entry *dst,
struct in6_addr *dest, struct in6_addr *src,
@@ -4765,19 +4698,21 @@ static int rt6_fill_node(struct net *net, struct sk_buff *skb,
if (!mp)
goto nla_put_failure;
- if (rt6_add_nexthop(skb, &rt->fib6_nh) < 0)
+ if (fib_add_nexthop(skb, &rt->fib6_nh.nh_common,
+ rt->fib6_nh.fib_nh_weight) < 0)
goto nla_put_failure;
list_for_each_entry_safe(sibling, next_sibling,
&rt->fib6_siblings, fib6_siblings) {
- if (rt6_add_nexthop(skb, &sibling->fib6_nh) < 0)
+ if (fib_add_nexthop(skb, &sibling->fib6_nh.nh_common,
+ sibling->fib6_nh.fib_nh_weight) < 0)
goto nla_put_failure;
}
nla_nest_end(skb, mp);
} else {
- if (rt6_nexthop_info(skb, &rt->fib6_nh, &rtm->rtm_flags,
- false) < 0)
+ if (fib_nexthop_info(skb, &rt->fib6_nh.nh_common,
+ &rtm->rtm_flags, false) < 0)
goto nla_put_failure;
}