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authorDavid Ahern <dsahern@gmail.com>2019-04-16 23:36:07 +0200
committerDavid S. Miller <davem@davemloft.net>2019-04-18 08:10:47 +0200
commit75ef7389dd2339e5f2a7347aadbdbded8dd8430f (patch)
treed38595fdb002e663196f0138463c2617d67cd4fc /net/ipv6
parentipv6: Pass fib6_result to ip6_mtu_from_fib6 and fib6_mtu (diff)
downloadlinux-75ef7389dd2339e5f2a7347aadbdbded8dd8430f.tar.xz
linux-75ef7389dd2339e5f2a7347aadbdbded8dd8430f.zip
ipv6: Pass fib6_result to rt6_device_match
Pass fib6_result to rt6_device_match with f6i set. rt6_device_match updates f6i in the result if it finds a better match and sets nh. Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6')
-rw-r--r--net/ipv6/route.c49
1 files changed, 30 insertions, 19 deletions
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 85799a09e144..6bea5ac05982 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -491,29 +491,40 @@ static bool __rt6_device_match(struct net *net, const struct fib6_nh *nh,
return false;
}
-static inline struct fib6_info *rt6_device_match(struct net *net,
- struct fib6_info *rt,
- const struct in6_addr *saddr,
- int oif,
- int flags)
+static void rt6_device_match(struct net *net, struct fib6_result *res,
+ const struct in6_addr *saddr, int oif, int flags)
{
- const struct fib6_nh *nh;
- struct fib6_info *sprt;
+ struct fib6_info *f6i = res->f6i;
+ struct fib6_info *spf6i;
+ struct fib6_nh *nh;
- if (!oif && ipv6_addr_any(saddr) &&
- !(rt->fib6_nh.fib_nh_flags & RTNH_F_DEAD))
- return rt;
+ if (!oif && ipv6_addr_any(saddr)) {
+ nh = &f6i->fib6_nh;
+ if (!(nh->fib_nh_flags & RTNH_F_DEAD)) {
+ res->nh = nh;
+ return;
+ }
+ }
- for (sprt = rt; sprt; sprt = rcu_dereference(sprt->fib6_next)) {
- nh = &sprt->fib6_nh;
- if (__rt6_device_match(net, nh, saddr, oif, flags))
- return sprt;
+ for (spf6i = f6i; spf6i; spf6i = rcu_dereference(spf6i->fib6_next)) {
+ nh = &spf6i->fib6_nh;
+ if (__rt6_device_match(net, nh, saddr, oif, flags)) {
+ res->f6i = spf6i;
+ res->nh = nh;
+ }
}
- if (oif && flags & RT6_LOOKUP_F_IFACE)
- return net->ipv6.fib6_null_entry;
+ if (oif && flags & RT6_LOOKUP_F_IFACE) {
+ res->f6i = net->ipv6.fib6_null_entry;
+ res->nh = &res->f6i->fib6_nh;
+ return;
+ }
- return rt->fib6_nh.fib_nh_flags & RTNH_F_DEAD ? net->ipv6.fib6_null_entry : rt;
+ res->nh = &f6i->fib6_nh;
+ if (res->nh->fib_nh_flags & RTNH_F_DEAD) {
+ res->f6i = net->ipv6.fib6_null_entry;
+ res->nh = &res->f6i->fib6_nh;
+ }
}
#ifdef CONFIG_IPV6_ROUTER_PREF
@@ -1089,8 +1100,8 @@ restart:
if (!res.f6i)
res.f6i = net->ipv6.fib6_null_entry;
else
- res.f6i = rt6_device_match(net, res.f6i, &fl6->saddr,
- fl6->flowi6_oif, flags);
+ rt6_device_match(net, &res, &fl6->saddr, fl6->flowi6_oif,
+ flags);
if (res.f6i == net->ipv6.fib6_null_entry) {
fn = fib6_backtrack(fn, &fl6->saddr);