ipmr/ip6mr: report origin of mfc entry into rtnl msg

A mfc entry can be static or not (added via the mroute_sk socket). The patch
reports MFC_STATIC flag into rtm_protocol by setting rtm_protocol to
RTPROT_STATIC or RTPROT_MROUTED.
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/uapi/linux/rtnetlink.h

@@ -227,6 +227,7 @@ enum {
 #define RTPROT_XORP	14	/* XORP */
 #define RTPROT_NTK	15	/* Netsukuku */
 #define RTPROT_DHCP	16      /* DHCP client */
+#define RTPROT_MROUTED	17      /* Multicast daemon */
 
 /* rtm_scope
 

net/ipv4/ipmr.c

@@ -2169,7 +2169,10 @@ static int ipmr_fill_mroute(struct mr_table *mrt, struct sk_buff *skb,
 		goto nla_put_failure;
 	rtm->rtm_type     = RTN_MULTICAST;
 	rtm->rtm_scope    = RT_SCOPE_UNIVERSE;
-	rtm->rtm_protocol = RTPROT_UNSPEC;
+	if (c->mfc_flags & MFC_STATIC)
+		rtm->rtm_protocol = RTPROT_STATIC;
+	else
+		rtm->rtm_protocol = RTPROT_MROUTED;
 	rtm->rtm_flags    = 0;
 
 	if (nla_put_be32(skb, RTA_SRC, c->mfc_origin) ||

net/ipv6/ip6mr.c

@@ -2249,7 +2249,10 @@ static int ip6mr_fill_mroute(struct mr6_table *mrt, struct sk_buff *skb,
 	if (nla_put_u32(skb, RTA_TABLE, mrt->id))
 		goto nla_put_failure;
 	rtm->rtm_scope    = RT_SCOPE_UNIVERSE;
-	rtm->rtm_protocol = RTPROT_UNSPEC;
+	if (c->mfc_flags & MFC_STATIC)
+		rtm->rtm_protocol = RTPROT_STATIC;
+	else
+		rtm->rtm_protocol = RTPROT_MROUTED;
 	rtm->rtm_flags    = 0;
 
 	if (nla_put(skb, RTA_SRC, 16, &c->mf6c_origin) ||