From: Nikolay Aleksandrov <razor@blackwall.org>
Date: Wed, 13 Apr 2022 10:51:58 +0000 (+0300)
Subject: net: bridge: fdb: add ndo_fdb_del_bulk
X-Git-Tag: v6.1-rc5~1274^2~322^2~4
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=edaef191722439591bfba75b4e5650bfd39c9123;p=platform%2Fkernel%2Flinux-starfive.git

net: bridge: fdb: add ndo_fdb_del_bulk

Add a minimal ndo_fdb_del_bulk implementation which flushes all entries.
Support for more fine-grained filtering will be added in the following
patches.

Signed-off-by: Nikolay Aleksandrov <razor@blackwall.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/bridge/br_device.c b/net/bridge/br_device.c
index 8d6bab2..58a4f70 100644
--- a/net/bridge/br_device.c
+++ b/net/bridge/br_device.c
@@ -465,6 +465,7 @@ static const struct net_device_ops br_netdev_ops = {
 	.ndo_fix_features        = br_fix_features,
 	.ndo_fdb_add		 = br_fdb_add,
 	.ndo_fdb_del		 = br_fdb_delete,
+	.ndo_fdb_del_bulk	 = br_fdb_delete_bulk,
 	.ndo_fdb_dump		 = br_fdb_dump,
 	.ndo_fdb_get		 = br_fdb_get,
 	.ndo_bridge_getlink	 = br_getlink,
diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index 6ccda68..363985f 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -572,6 +572,29 @@ void br_fdb_flush(struct net_bridge *br)
 	spin_unlock_bh(&br->hash_lock);
 }
 
+int br_fdb_delete_bulk(struct ndmsg *ndm, struct nlattr *tb[],
+		       struct net_device *dev, u16 vid,
+		       struct netlink_ext_ack *extack)
+{
+	struct net_bridge_port *p = NULL;
+	struct net_bridge *br;
+
+	if (netif_is_bridge_master(dev)) {
+		br = netdev_priv(dev);
+	} else {
+		p = br_port_get_rtnl(dev);
+		if (!p) {
+			NL_SET_ERR_MSG_MOD(extack, "Device is not a bridge port");
+			return -EINVAL;
+		}
+		br = p->br;
+	}
+
+	br_fdb_flush(br);
+
+	return 0;
+}
+
 /* Flush all entries referring to a specific port.
  * if do_all is set also flush static entries
  * if vid is set delete all entries that match the vlan_id
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index 18ccc3d..6df4473 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -781,6 +781,9 @@ void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
 
 int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
 		  struct net_device *dev, const unsigned char *addr, u16 vid);
+int br_fdb_delete_bulk(struct ndmsg *ndm, struct nlattr *tb[],
+		       struct net_device *dev, u16 vid,
+		       struct netlink_ext_ack *extack);
 int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], struct net_device *dev,
 	       const unsigned char *addr, u16 vid, u16 nlh_flags,
 	       struct netlink_ext_ack *extack);