commit 7910228b6bb35f3c8e0bc72a8d84c29616cb1b90
author Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Sun Oct 04 14:23:28 2015 +0200
committer David S. Miller <davem@davemloft.net> Sun Oct 04 16:45:53 2015 -0700
tree b1c52718ebb098f3ed631892d53d48a24a47ad47
parent 68d4e5208291ac8bd7d47d992f353da31a2e1484

bridge: netlink: add group_fwd_mask support

Add IFLA_BR_GROUP_FWD_MASK attribute to allow setting and retrieving the
group_fwd_mask via netlink.

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

net/bridge/br_netlink.c

diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
index c318619..39b201a 100644
--- a/net/bridge/br_netlink.c
+++ b/net/bridge/br_netlink.c
@@ -764,6 +764,7 @@
 	[IFLA_BR_PRIORITY] = { .type = NLA_U16 },
 	[IFLA_BR_VLAN_FILTERING] = { .type = NLA_U8 },
 	[IFLA_BR_VLAN_PROTOCOL] = { .type = NLA_U16 },
+	[IFLA_BR_GROUP_FWD_MASK] = { .type = NLA_U16 },
 };
 
 static int br_changelink(struct net_device *brdev, struct nlattr *tb[],
@@ -829,6 +830,14 @@
 	}
 #endif
 
+	if (data[IFLA_BR_GROUP_FWD_MASK]) {
+		u16 fwd_mask = nla_get_u16(data[IFLA_BR_GROUP_FWD_MASK]);
+
+		if (fwd_mask & BR_GROUPFWD_RESTRICTED)
+			return -EINVAL;
+		br->group_fwd_mask = fwd_mask;
+	}
+
 	return 0;
 }
 
@@ -844,6 +853,7 @@
 #ifdef CONFIG_BRIDGE_VLAN_FILTERING
 	       nla_total_size(sizeof(__be16)) +	/* IFLA_BR_VLAN_PROTOCOL */
 #endif
+	       nla_total_size(sizeof(u16)) +    /* IFLA_BR_GROUP_FWD_MASK */
 	       0;
 }
 
@@ -856,6 +866,7 @@
 	u32 ageing_time = jiffies_to_clock_t(br->ageing_time);
 	u32 stp_enabled = br->stp_enabled;
 	u16 priority = (br->bridge_id.prio[0] << 8) | br->bridge_id.prio[1];
+	u16 group_fwd_mask = br->group_fwd_mask;
 	u8 vlan_enabled = br_vlan_enabled(br);
 
 	if (nla_put_u32(skb, IFLA_BR_FORWARD_DELAY, forward_delay) ||
@@ -864,7 +875,8 @@
 	    nla_put_u32(skb, IFLA_BR_AGEING_TIME, ageing_time) ||
 	    nla_put_u32(skb, IFLA_BR_STP_STATE, stp_enabled) ||
 	    nla_put_u16(skb, IFLA_BR_PRIORITY, priority) ||
-	    nla_put_u8(skb, IFLA_BR_VLAN_FILTERING, vlan_enabled))
+	    nla_put_u8(skb, IFLA_BR_VLAN_FILTERING, vlan_enabled) ||
+	    nla_put_u16(skb, IFLA_BR_GROUP_FWD_MASK, group_fwd_mask))
 		return -EMSGSIZE;
 
 #ifdef CONFIG_BRIDGE_VLAN_FILTERING