netconf: advertise mc_forwarding status

This patch advertise the MC_FORWARDING status for IPv4 and IPv6.
This field is readonly, only multicast engine in the kernel updates it.

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 8 insertions, 2 deletions

diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 22ae75d54017..28e0e627229c 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -469,6 +469,8 @@ static int inet6_netconf_msgsize_devconf(int type)
         /* type -1 is used for ALL */
         if (type == -1 || type == NETCONFA_FORWARDING)
                 size += nla_total_size(4);
+        if (type == -1 || type == NETCONFA_MC_FORWARDING)
+                size += nla_total_size(4);
 
         return size;
 }
@@ -496,6 +498,10 @@ static int inet6_netconf_fill_devconf(struct sk_buff *skb, int ifindex,
         if ((type == -1 || type == NETCONFA_FORWARDING) &&
             nla_put_s32(skb, NETCONFA_FORWARDING, devconf->forwarding) < 0)
                 goto nla_put_failure;
+        if ((type == -1 || type == NETCONFA_MC_FORWARDING) &&
+            nla_put_s32(skb, NETCONFA_MC_FORWARDING,
+                        devconf->mc_forwarding) < 0)
+                goto nla_put_failure;
 
         return nlmsg_end(skb, nlh);
 
@@ -504,8 +510,8 @@ nla_put_failure:
         return -EMSGSIZE;
 }
 
-static void inet6_netconf_notify_devconf(struct net *net, int type, int ifindex,
-                                         struct ipv6_devconf *devconf)
+void inet6_netconf_notify_devconf(struct net *net, int type, int ifindex,
+                                  struct ipv6_devconf *devconf)
 {
         struct sk_buff *skb;
         int err = -ENOBUFS;