diff mbox series

[net-next,v2,2/9] bridge: mcast: Remove redundant checks

Message ID 20221206105809.363767-3-idosch@nvidia.com (mailing list archive)
State Accepted
Commit 3866116815249be8a5ebfa37ddea9f1032c976a9
Delegated to: Netdev Maintainers
Headers show
Series bridge: mcast: Preparations for EVPN extensions | expand

Checks

Context Check Description
netdev/tree_selection success Clearly marked for net-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix success Link
netdev/cover_letter success Series has a cover letter
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers success CCed 8 of 8 maintainers
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/checkpatch warning WARNING: line length of 85 exceeds 80 columns WARNING: line length of 89 exceeds 80 columns
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Ido Schimmel Dec. 6, 2022, 10:58 a.m. UTC 
These checks are now redundant as they are performed by
br_mdb_config_init() while parsing the RTM_{NEW,DEL}MDB messages.

Remove them.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
---
 net/bridge/br_mdb.c | 63 +++++++--------------------------------------
 1 file changed, 9 insertions(+), 54 deletions(-)
diff mbox series

Patch

diff --git a/net/bridge/br_mdb.c b/net/bridge/br_mdb.c
index bd3a7d881d52..c8d78e4ec94e 100644
--- a/net/bridge/br_mdb.c
+++ b/net/bridge/br_mdb.c
@@ -1090,11 +1090,10 @@  static int br_mdb_add(struct sk_buff *skb, struct nlmsghdr *nlh,
 	struct nlattr *mdb_attrs[MDBE_ATTR_MAX + 1];
 	struct net *net = sock_net(skb->sk);
 	struct net_bridge_vlan_group *vg;
-	struct net_bridge_port *p = NULL;
-	struct net_device *dev, *pdev;
 	struct br_mdb_entry *entry;
 	struct net_bridge_vlan *v;
 	struct br_mdb_config cfg;
+	struct net_device *dev;
 	struct net_bridge *br;
 	int err;
 
@@ -1108,38 +1107,12 @@  static int br_mdb_add(struct sk_buff *skb, struct nlmsghdr *nlh,
 
 	br = netdev_priv(dev);
 
-	if (!netif_running(br->dev)) {
-		NL_SET_ERR_MSG_MOD(extack, "Bridge device is not running");
-		return -EINVAL;
-	}
-
-	if (!br_opt_get(br, BROPT_MULTICAST_ENABLED)) {
-		NL_SET_ERR_MSG_MOD(extack, "Bridge's multicast processing is disabled");
-		return -EINVAL;
-	}
-
 	if (entry->ifindex != br->dev->ifindex) {
-		pdev = __dev_get_by_index(net, entry->ifindex);
-		if (!pdev) {
-			NL_SET_ERR_MSG_MOD(extack, "Port net device doesn't exist");
-			return -ENODEV;
-		}
-
-		p = br_port_get_rtnl(pdev);
-		if (!p) {
-			NL_SET_ERR_MSG_MOD(extack, "Net device is not a bridge port");
-			return -EINVAL;
-		}
-
-		if (p->br != br) {
-			NL_SET_ERR_MSG_MOD(extack, "Port belongs to a different bridge device");
-			return -EINVAL;
-		}
-		if (p->state == BR_STATE_DISABLED && entry->state != MDB_PERMANENT) {
+		if (cfg.p->state == BR_STATE_DISABLED && entry->state != MDB_PERMANENT) {
 			NL_SET_ERR_MSG_MOD(extack, "Port is in disabled state and entry is not permanent");
 			return -EINVAL;
 		}
-		vg = nbp_vlan_group(p);
+		vg = nbp_vlan_group(cfg.p);
 	} else {
 		vg = br_vlan_group(br);
 	}
@@ -1150,12 +1123,12 @@  static int br_mdb_add(struct sk_buff *skb, struct nlmsghdr *nlh,
 	if (br_vlan_enabled(br->dev) && vg && entry->vid == 0) {
 		list_for_each_entry(v, &vg->vlan_list, vlist) {
 			entry->vid = v->vid;
-			err = __br_mdb_add(net, br, p, entry, mdb_attrs, extack);
+			err = __br_mdb_add(net, br, cfg.p, entry, mdb_attrs, extack);
 			if (err)
 				break;
 		}
 	} else {
-		err = __br_mdb_add(net, br, p, entry, mdb_attrs, extack);
+		err = __br_mdb_add(net, br, cfg.p, entry, mdb_attrs, extack);
 	}
 
 	return err;
@@ -1170,9 +1143,6 @@  static int __br_mdb_del(struct net_bridge *br, struct br_mdb_entry *entry,
 	struct br_ip ip;
 	int err = -EINVAL;
 
-	if (!netif_running(br->dev) || !br_opt_get(br, BROPT_MULTICAST_ENABLED))
-		return -EINVAL;
-
 	__mdb_entry_to_br_ip(entry, &ip, mdb_attrs);
 
 	spin_lock_bh(&br->multicast_lock);
@@ -1212,11 +1182,10 @@  static int br_mdb_del(struct sk_buff *skb, struct nlmsghdr *nlh,
 	struct nlattr *mdb_attrs[MDBE_ATTR_MAX + 1];
 	struct net *net = sock_net(skb->sk);
 	struct net_bridge_vlan_group *vg;
-	struct net_bridge_port *p = NULL;
-	struct net_device *dev, *pdev;
 	struct br_mdb_entry *entry;
 	struct net_bridge_vlan *v;
 	struct br_mdb_config cfg;
+	struct net_device *dev;
 	struct net_bridge *br;
 	int err;
 
@@ -1230,24 +1199,10 @@  static int br_mdb_del(struct sk_buff *skb, struct nlmsghdr *nlh,
 
 	br = netdev_priv(dev);
 
-	if (entry->ifindex != br->dev->ifindex) {
-		pdev = __dev_get_by_index(net, entry->ifindex);
-		if (!pdev)
-			return -ENODEV;
-
-		p = br_port_get_rtnl(pdev);
-		if (!p) {
-			NL_SET_ERR_MSG_MOD(extack, "Net device is not a bridge port");
-			return -EINVAL;
-		}
-		if (p->br != br) {
-			NL_SET_ERR_MSG_MOD(extack, "Port belongs to a different bridge device");
-			return -EINVAL;
-		}
-		vg = nbp_vlan_group(p);
-	} else {
+	if (entry->ifindex != br->dev->ifindex)
+		vg = nbp_vlan_group(cfg.p);
+	else
 		vg = br_vlan_group(br);
-	}
 
 	/* If vlan filtering is enabled and VLAN is not specified
 	 * delete mdb entry on all vlans configured on the port.