[IPV6]: Support Source Address Selection API (RFC5014).

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>

1 files changed, 11 insertions, 1 deletions

diff --git a/net/ipv6/fib6_rules.c b/net/ipv6/fib6_rules.c
index 55137408f054..e7a7fe26cebf 100644
--- a/net/ipv6/fib6_rules.c
+++ b/net/ipv6/fib6_rules.c
@@ -84,8 +84,18 @@ static int fib6_rule_action(struct fib_rule *rule, struct flowi *flp,
                 if ((rule->flags & FIB_RULE_FIND_SADDR) &&
                     r->src.plen && !(flags & RT6_LOOKUP_F_HAS_SADDR)) {
                         struct in6_addr saddr;
+                        unsigned int srcprefs = 0;
+
+                        if (flags & RT6_LOOKUP_F_SRCPREF_TMP)
+                                srcprefs |= IPV6_PREFER_SRC_TMP;
+                        if (flags & RT6_LOOKUP_F_SRCPREF_PUBLIC)
+                                srcprefs |= IPV6_PREFER_SRC_PUBLIC;
+                        if (flags & RT6_LOOKUP_F_SRCPREF_COA)
+                                srcprefs |= IPV6_PREFER_SRC_COA;
+
                         if (ipv6_dev_get_saddr(ip6_dst_idev(&rt->u.dst)->dev,
-                                               &flp->fl6_dst, &saddr))
+                                               &flp->fl6_dst, srcprefs,
+                                               &saddr))
                                 goto again;
                         if (!ipv6_prefix_equal(&saddr, &r->src.addr,
                                                r->src.plen))