ipv6: Pass fib6_nh and flags to rt6_score_route

rt6_score_route only needs the fib6_flags and nexthop data. Change
it accordingly. Allows re-use later for nexthop based fib6_nh.

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index c2b0d6f..22d1933 100644 (file)
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -102,7 +102,8 @@ static void         ip6_rt_update_pmtu(struct dst_entry *dst, struct sock *sk,
                                           struct sk_buff *skb, u32 mtu);
 static void            rt6_do_redirect(struct dst_entry *dst, struct sock *sk,
                                        struct sk_buff *skb);
-static int rt6_score_route(struct fib6_info *rt, int oif, int strict);
+static int rt6_score_route(const struct fib6_nh *nh, u32 fib6_flags, int oif,
+                          int strict);
 static size_t rt6_nlmsg_size(struct fib6_info *rt);
 static int rt6_fill_node(struct net *net, struct sk_buff *skb,
                         struct fib6_info *rt, struct dst_entry *dst,
@@ -446,12 +447,13 @@ struct fib6_info *fib6_multipath_select(const struct net *net,
 
        list_for_each_entry_safe(sibling, next_sibling, &match->fib6_siblings,
                                 fib6_siblings) {
+               const struct fib6_nh *nh = &sibling->fib6_nh;
                int nh_upper_bound;
 
-               nh_upper_bound = atomic_read(&sibling->fib6_nh.fib_nh_upper_bound);
+               nh_upper_bound = atomic_read(&nh->fib_nh_upper_bound);
                if (fl6->mp_hash > nh_upper_bound)
                        continue;
-               if (rt6_score_route(sibling, oif, strict) < 0)
+               if (rt6_score_route(nh, sibling->fib6_flags, oif, strict) < 0)
                        break;
                match = sibling;
                break;
@@ -608,9 +610,9 @@ static enum rt6_nud_state rt6_check_neigh(const struct fib6_nh *fib6_nh)
        return ret;
 }
 
-static int rt6_score_route(struct fib6_info *rt, int oif, int strict)
+static int rt6_score_route(const struct fib6_nh *nh, u32 fib6_flags, int oif,
+                          int strict)
 {
-       struct fib6_nh *nh = &rt->fib6_nh;
        int m = 0;
 
        if (!oif || nh->fib_nh_dev->ifindex == oif)
@@ -619,10 +621,10 @@ static int rt6_score_route(struct fib6_info *rt, int oif, int strict)
        if (!m && (strict & RT6_LOOKUP_F_IFACE))
                return RT6_NUD_FAIL_HARD;
 #ifdef CONFIG_IPV6_ROUTER_PREF
-       m |= IPV6_DECODE_PREF(IPV6_EXTRACT_PREF(rt->fib6_flags)) << 2;
+       m |= IPV6_DECODE_PREF(IPV6_EXTRACT_PREF(fib6_flags)) << 2;
 #endif
        if ((strict & RT6_LOOKUP_F_REACHABLE) &&
-           !(rt->fib6_flags & RTF_NONEXTHOP) && nh->fib_nh_gw_family) {
+           !(fib6_flags & RTF_NONEXTHOP) && nh->fib_nh_gw_family) {
                int n = rt6_check_neigh(nh);
                if (n < 0)
                        return n;
@@ -648,7 +650,7 @@ static struct fib6_info *find_match(struct fib6_info *rt, int oif, int strict,
        if (fib6_check_expired(rt))
                goto out;
 
-       m = rt6_score_route(rt, oif, strict);
+       m = rt6_score_route(&rt->fib6_nh, rt->fib6_flags, oif, strict);
        if (m == RT6_NUD_FAIL_DO_RR) {
                match_do_rr = true;
                m = 0; /* lowest valid score */