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-rw-r--r--include/uapi/linux/rtnetlink.h1
-rw-r--r--net/ipv4/ipmr.c4
-rw-r--r--net/ipv6/ip6mr.c4
3 files changed, 7 insertions, 2 deletions
diff --git a/include/uapi/linux/rtnetlink.h b/include/uapi/linux/rtnetlink.h
index e14377f2ec27..8c93ad1ef9ab 100644
--- a/include/uapi/linux/rtnetlink.h
+++ b/include/uapi/linux/rtnetlink.h
@@ -350,6 +350,7 @@ struct rtnexthop {
#define RTNH_F_ONLINK 4 /* Gateway is forced on link */
#define RTNH_F_OFFLOAD 8 /* offloaded route */
#define RTNH_F_LINKDOWN 16 /* carrier-down on nexthop */
+#define RTNH_F_UNRESOLVED 32 /* The entry is unresolved (ipmr) */
#define RTNH_COMPARE_MASK (RTNH_F_DEAD | RTNH_F_LINKDOWN | RTNH_F_OFFLOAD)
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index efc1e76d4977..b35dda57586b 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -2091,8 +2091,10 @@ static int __ipmr_fill_mroute(struct mr_table *mrt, struct sk_buff *skb,
int ct;
/* If cache is unresolved, don't try to parse IIF and OIF */
- if (c->mfc_parent >= MAXVIFS)
+ if (c->mfc_parent >= MAXVIFS) {
+ rtm->rtm_flags |= RTNH_F_UNRESOLVED;
return -ENOENT;
+ }
if (VIF_EXISTS(mrt, c->mfc_parent) &&
nla_put_u32(skb, RTA_IIF, mrt->vif_table[c->mfc_parent].dev->ifindex) < 0)
diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c
index 604d8953c775..e275077e8af2 100644
--- a/net/ipv6/ip6mr.c
+++ b/net/ipv6/ip6mr.c
@@ -2243,8 +2243,10 @@ static int __ip6mr_fill_mroute(struct mr6_table *mrt, struct sk_buff *skb,
int ct;
/* If cache is unresolved, don't try to parse IIF and OIF */
- if (c->mf6c_parent >= MAXMIFS)
+ if (c->mf6c_parent >= MAXMIFS) {
+ rtm->rtm_flags |= RTNH_F_UNRESOLVED;
return -ENOENT;
+ }
if (MIF_EXISTS(mrt, c->mf6c_parent) &&
nla_put_u32(skb, RTA_IIF, mrt->vif6_table[c->mf6c_parent].dev->ifindex) < 0)