From f1fecb1d10ecc2f94d19e67827b9f678b36bfc61 Mon Sep 17 00:00:00 2001
From: Elad Raz <eladr@mellanox.com>
Date: Sun, 10 Jan 2016 21:06:23 +0100
Subject: bridge: Reflect MDB entries to hardware

Offload MDB changes per port to hardware

Signed-off-by: Elad Raz <eladr@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 net/bridge/br_mdb.c | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

(limited to 'net/bridge')

diff --git a/net/bridge/br_mdb.c b/net/bridge/br_mdb.c
index cd8deea2d074..30e105f57f0d 100644
--- a/net/bridge/br_mdb.c
+++ b/net/bridge/br_mdb.c
@@ -7,6 +7,7 @@
 #include <linux/if_ether.h>
 #include <net/ip.h>
 #include <net/netlink.h>
+#include <net/switchdev.h>
 #if IS_ENABLED(CONFIG_IPV6)
 #include <net/ipv6.h>
 #include <net/addrconf.h>
@@ -210,10 +211,32 @@ static inline size_t rtnl_mdb_nlmsg_size(void)
 static void __br_mdb_notify(struct net_device *dev, struct br_mdb_entry *entry,
 			    int type)
 {
+	struct switchdev_obj_port_mdb mdb = {
+		.obj = {
+			.id = SWITCHDEV_OBJ_ID_PORT_MDB,
+			.flags = SWITCHDEV_F_DEFER,
+		},
+		.vid = entry->vid,
+	};
+	struct net_device *port_dev;
 	struct net *net = dev_net(dev);
 	struct sk_buff *skb;
 	int err = -ENOBUFS;
 
+	port_dev = __dev_get_by_index(net, entry->ifindex);
+	if (entry->addr.proto == htons(ETH_P_IP))
+		ip_eth_mc_map(entry->addr.u.ip4, mdb.addr);
+#if IS_ENABLED(CONFIG_IPV6)
+	else
+		ipv6_eth_mc_map(&entry->addr.u.ip6, mdb.addr);
+#endif
+
+	mdb.obj.orig_dev = port_dev;
+	if (port_dev && type == RTM_NEWMDB)
+		switchdev_port_obj_add(port_dev, &mdb.obj);
+	else if (port_dev && type == RTM_DELMDB)
+		switchdev_port_obj_del(port_dev, &mdb.obj);
+
 	skb = nlmsg_new(rtnl_mdb_nlmsg_size(), GFP_ATOMIC);
 	if (!skb)
 		goto errout;
-- 
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