From: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Date: Sun, 4 Oct 2015 12:23:40 +0000 (+0200)
Subject: bridge: netlink: add support for multicast_querier
X-Git-Tag: firefly_0821_release~176^2~818^2~231^2~7
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=ba062d7cc6a09a8194eba975d5ee635378a55bfc;p=firefly-linux-kernel-4.4.55.git

bridge: netlink: add support for multicast_querier

Add IFLA_BR_MCAST_QUERIER to allow setting/getting br->multicast_querier
via netlink.

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h
index 7090b3977eac..fe5fac5c2a7f 100644
--- a/include/uapi/linux/if_link.h
+++ b/include/uapi/linux/if_link.h
@@ -248,6 +248,7 @@ enum {
 	IFLA_BR_MCAST_ROUTER,
 	IFLA_BR_MCAST_SNOOPING,
 	IFLA_BR_MCAST_QUERY_USE_IFADDR,
+	IFLA_BR_MCAST_QUERIER,
 	__IFLA_BR_MAX,
 };
 
diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
index 12ef844273a7..e21296dacf42 100644
--- a/net/bridge/br_netlink.c
+++ b/net/bridge/br_netlink.c
@@ -770,6 +770,7 @@ static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = {
 	[IFLA_BR_MCAST_ROUTER] = { .type = NLA_U8 },
 	[IFLA_BR_MCAST_SNOOPING] = { .type = NLA_U8 },
 	[IFLA_BR_MCAST_QUERY_USE_IFADDR] = { .type = NLA_U8 },
+	[IFLA_BR_MCAST_QUERIER] = { .type = NLA_U8 },
 };
 
 static int br_changelink(struct net_device *brdev, struct nlattr *tb[],
@@ -888,6 +889,14 @@ static int br_changelink(struct net_device *brdev, struct nlattr *tb[],
 		val = nla_get_u8(data[IFLA_BR_MCAST_QUERY_USE_IFADDR]);
 		br->multicast_query_use_ifaddr = !!val;
 	}
+
+	if (data[IFLA_BR_MCAST_QUERIER]) {
+		u8 mcast_querier = nla_get_u8(data[IFLA_BR_MCAST_QUERIER]);
+
+		err = br_multicast_set_querier(br, mcast_querier);
+		if (err)
+			return err;
+	}
 #endif
 
 	return 0;
@@ -921,6 +930,7 @@ static size_t br_get_size(const struct net_device *brdev)
 	       nla_total_size(sizeof(u8)) +     /* IFLA_BR_MCAST_ROUTER */
 	       nla_total_size(sizeof(u8)) +     /* IFLA_BR_MCAST_SNOOPING */
 	       nla_total_size(sizeof(u8)) +     /* IFLA_BR_MCAST_QUERY_USE_IFADDR */
+	       nla_total_size(sizeof(u8)) +     /* IFLA_BR_MCAST_QUERIER */
 #endif
 	       0;
 }
@@ -982,7 +992,8 @@ static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev)
 	if (nla_put_u8(skb, IFLA_BR_MCAST_ROUTER, br->multicast_router) ||
 	    nla_put_u8(skb, IFLA_BR_MCAST_SNOOPING, !br->multicast_disabled) ||
 	    nla_put_u8(skb, IFLA_BR_MCAST_QUERY_USE_IFADDR,
-		       br->multicast_query_use_ifaddr))
+		       br->multicast_query_use_ifaddr) ||
+	    nla_put_u8(skb, IFLA_BR_MCAST_QUERIER, br->multicast_querier))
 		return -EMSGSIZE;
 #endif