diff mbox series

[net-next,v4,2/7] ndo_fdb_del: Add a parameter to report whether notification was sent

Message ID 06b1acf4953ef0a5ed153ef1f32d7292044f2be6.1731589511.git.petrm@nvidia.com (mailing list archive)
State Accepted
Commit 42575ad5aab932273475d1ec3e7881cb5a05420e
Delegated to: Netdev Maintainers
Headers show
Series net: ndo_fdb_add/del: Have drivers report whether they notified | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next, async
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 40 this patch: 40
netdev/build_tools success Errors and warnings before: 0 (+0) this patch: 0 (+0)
netdev/cc_maintainers warning 6 maintainers not CCed: anthony.l.nguyen@intel.com shshaikh@marvell.com menglong8.dong@gmail.com alexandre.belloni@bootlin.com claudiu.manoil@nxp.com roopa@nvidia.com
netdev/build_clang success Errors and warnings before: 62 this patch: 62
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
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: 4104 this patch: 4104
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 181 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 146 this patch: 146
netdev/source_inline success Was 0 now: 0
netdev/contest success net-next-2024-11-15--21-00 (tests: 789)

Commit Message

Petr Machata Nov. 14, 2024, 2:09 p.m. UTC 
In a similar fashion to ndo_fdb_add, which was covered in the previous
patch, add the bool *notified argument to ndo_fdb_del. Callees that send a
notification on their own set the flag to true.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Amit Cohen <amcohen@nvidia.com>
Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org>
---

Notes:
CC: Przemek Kitszel <przemyslaw.kitszel@intel.com>
CC: intel-wired-lan@lists.osuosl.org
CC: UNGLinuxDriver@microchip.com
CC: Manish Chopra <manishc@marvell.com>
CC: GR-Linux-NIC-Dev@marvell.com
CC: Kuniyuki Iwashima <kuniyu@amazon.com>
CC: Andrew Lunn <andrew+netdev@lunn.ch>
CC: Nikolay Aleksandrov <razor@blackwall.org>
CC: bridge@lists.linux.dev

 drivers/net/ethernet/intel/ice/ice_main.c        |  4 +++-
 drivers/net/ethernet/mscc/ocelot_net.c           |  2 +-
 drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c |  2 +-
 drivers/net/macvlan.c                            |  2 +-
 drivers/net/vxlan/vxlan_core.c                   |  5 ++++-
 include/linux/netdevice.h                        |  9 +++++++--
 net/bridge/br_fdb.c                              | 15 ++++++++-------
 net/bridge/br_private.h                          |  2 +-
 net/core/rtnetlink.c                             | 11 ++++++++---
 9 files changed, 34 insertions(+), 18 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index c875036f654b..b79848fe2a9e 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -6166,12 +6166,14 @@  ice_fdb_add(struct ndmsg *ndm, struct nlattr __always_unused *tb[],
  * @dev: the net device pointer
  * @addr: the MAC address entry being added
  * @vid: VLAN ID
+ * @notified: whether notification was emitted
  * @extack: netlink extended ack
  */
 static int
 ice_fdb_del(struct ndmsg *ndm, __always_unused struct nlattr *tb[],
 	    struct net_device *dev, const unsigned char *addr,
-	    __always_unused u16 vid, struct netlink_ext_ack *extack)
+	    __always_unused u16 vid, bool *notified,
+	    struct netlink_ext_ack *extack)
 {
 	int err;
 
diff --git a/drivers/net/ethernet/mscc/ocelot_net.c b/drivers/net/ethernet/mscc/ocelot_net.c
index 4f15ba2c5525..558e03301aa8 100644
--- a/drivers/net/ethernet/mscc/ocelot_net.c
+++ b/drivers/net/ethernet/mscc/ocelot_net.c
@@ -744,7 +744,7 @@  static int ocelot_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
 static int ocelot_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
 			       struct net_device *dev,
 			       const unsigned char *addr, u16 vid,
-			       struct netlink_ext_ack *extack)
+			       bool *notified, struct netlink_ext_ack *extack)
 {
 	struct ocelot_port_private *priv = netdev_priv(dev);
 	struct ocelot_port *ocelot_port = &priv->port;
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
index 2484cebd97d4..eb69121df726 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
@@ -367,7 +367,7 @@  static int qlcnic_set_mac(struct net_device *netdev, void *p)
 
 static int qlcnic_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
 			struct net_device *netdev,
-			const unsigned char *addr, u16 vid,
+			const unsigned char *addr, u16 vid, bool *notified,
 			struct netlink_ext_ack *extack)
 {
 	struct qlcnic_adapter *adapter = netdev_priv(netdev);
diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c
index dfb462e63248..fed4fe2a4748 100644
--- a/drivers/net/macvlan.c
+++ b/drivers/net/macvlan.c
@@ -1049,7 +1049,7 @@  static int macvlan_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
 
 static int macvlan_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
 			   struct net_device *dev,
-			   const unsigned char *addr, u16 vid,
+			   const unsigned char *addr, u16 vid, bool *notified,
 			   struct netlink_ext_ack *extack)
 {
 	struct macvlan_dev *vlan = netdev_priv(dev);
diff --git a/drivers/net/vxlan/vxlan_core.c b/drivers/net/vxlan/vxlan_core.c
index 09c1d27e11d3..edef32a593c3 100644
--- a/drivers/net/vxlan/vxlan_core.c
+++ b/drivers/net/vxlan/vxlan_core.c
@@ -1319,7 +1319,7 @@  int __vxlan_fdb_delete(struct vxlan_dev *vxlan,
 /* Delete entry (via netlink) */
 static int vxlan_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
 			    struct net_device *dev,
-			    const unsigned char *addr, u16 vid,
+			    const unsigned char *addr, u16 vid, bool *notified,
 			    struct netlink_ext_ack *extack)
 {
 	struct vxlan_dev *vxlan = netdev_priv(dev);
@@ -1341,6 +1341,9 @@  static int vxlan_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
 				 true);
 	spin_unlock_bh(&vxlan->hash_lock[hash_index]);
 
+	if (!err)
+		*notified = true;
+
 	return err;
 }
 
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 6a7fd191e1ee..ecc686409161 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1254,8 +1254,11 @@  struct netdev_net_notifier {
  *	notification(s). Otherwise core will send a generic one.
  * int (*ndo_fdb_del)(struct ndmsg *ndm, struct nlattr *tb[],
  *		      struct net_device *dev,
- *		      const unsigned char *addr, u16 vid)
+ *		      const unsigned char *addr, u16 vid
+ *		      bool *notified, struct netlink_ext_ack *extack);
  *	Deletes the FDB entry from dev corresponding to addr.
+ *	Callee shall set *notified to true if it sent any appropriate
+ *	notification(s). Otherwise core will send a generic one.
  * int (*ndo_fdb_del_bulk)(struct nlmsghdr *nlh, struct net_device *dev,
  *			   struct netlink_ext_ack *extack);
  * int (*ndo_fdb_dump)(struct sk_buff *skb, struct netlink_callback *cb,
@@ -1533,7 +1536,9 @@  struct net_device_ops {
 					       struct nlattr *tb[],
 					       struct net_device *dev,
 					       const unsigned char *addr,
-					       u16 vid, struct netlink_ext_ack *extack);
+					       u16 vid,
+					       bool *notified,
+					       struct netlink_ext_ack *extack);
 	int			(*ndo_fdb_del_bulk)(struct nlmsghdr *nlh,
 						    struct net_device *dev,
 						    struct netlink_ext_ack *extack);
diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index 5f29958f3ddd..82bac2426631 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -1287,7 +1287,7 @@  int br_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
 
 static int fdb_delete_by_addr_and_port(struct net_bridge *br,
 				       const struct net_bridge_port *p,
-				       const u8 *addr, u16 vlan)
+				       const u8 *addr, u16 vlan, bool *notified)
 {
 	struct net_bridge_fdb_entry *fdb;
 
@@ -1296,18 +1296,19 @@  static int fdb_delete_by_addr_and_port(struct net_bridge *br,
 		return -ENOENT;
 
 	fdb_delete(br, fdb, true);
+	*notified = true;
 
 	return 0;
 }
 
 static int __br_fdb_delete(struct net_bridge *br,
 			   const struct net_bridge_port *p,
-			   const unsigned char *addr, u16 vid)
+			   const unsigned char *addr, u16 vid, bool *notified)
 {
 	int err;
 
 	spin_lock_bh(&br->hash_lock);
-	err = fdb_delete_by_addr_and_port(br, p, addr, vid);
+	err = fdb_delete_by_addr_and_port(br, p, addr, vid, notified);
 	spin_unlock_bh(&br->hash_lock);
 
 	return err;
@@ -1316,7 +1317,7 @@  static int __br_fdb_delete(struct net_bridge *br,
 /* Remove neighbor entry with RTM_DELNEIGH */
 int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
 		  struct net_device *dev,
-		  const unsigned char *addr, u16 vid,
+		  const unsigned char *addr, u16 vid, bool *notified,
 		  struct netlink_ext_ack *extack)
 {
 	struct net_bridge_vlan_group *vg;
@@ -1339,19 +1340,19 @@  int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
 	}
 
 	if (vid) {
-		err = __br_fdb_delete(br, p, addr, vid);
+		err = __br_fdb_delete(br, p, addr, vid, notified);
 	} else {
 		struct net_bridge_vlan *v;
 
 		err = -ENOENT;
-		err &= __br_fdb_delete(br, p, addr, 0);
+		err &= __br_fdb_delete(br, p, addr, 0, notified);
 		if (!vg || !vg->num_vlans)
 			return err;
 
 		list_for_each_entry(v, &vg->vlan_list, vlist) {
 			if (!br_vlan_should_use(v))
 				continue;
-			err &= __br_fdb_delete(br, p, addr, v->vid);
+			err &= __br_fdb_delete(br, p, addr, v->vid, notified);
 		}
 	}
 
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index ebfc59049ec1..9853cfbb9d14 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -853,7 +853,7 @@  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,
-		  struct netlink_ext_ack *extack);
+		  bool *notified, struct netlink_ext_ack *extack);
 int br_fdb_delete_bulk(struct nlmsghdr *nlh, struct net_device *dev,
 		       struct netlink_ext_ack *extack);
 int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], struct net_device *dev,
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index f31b2436cde5..dd142f444659 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -4701,11 +4701,13 @@  static int rtnl_fdb_del(struct sk_buff *skb, struct nlmsghdr *nlh,
 	if ((!ndm->ndm_flags || ndm->ndm_flags & NTF_MASTER) &&
 	    netif_is_bridge_port(dev)) {
 		struct net_device *br_dev = netdev_master_upper_dev_get(dev);
+		bool notified = false;
 
 		ops = br_dev->netdev_ops;
 		if (!del_bulk) {
 			if (ops->ndo_fdb_del)
-				err = ops->ndo_fdb_del(ndm, tb, dev, addr, vid, extack);
+				err = ops->ndo_fdb_del(ndm, tb, dev, addr, vid,
+						       &notified, extack);
 		} else {
 			if (ops->ndo_fdb_del_bulk)
 				err = ops->ndo_fdb_del_bulk(nlh, dev, extack);
@@ -4719,10 +4721,13 @@  static int rtnl_fdb_del(struct sk_buff *skb, struct nlmsghdr *nlh,
 
 	/* Embedded bridge, macvlan, and any other device support */
 	if (ndm->ndm_flags & NTF_SELF) {
+		bool notified = false;
+
 		ops = dev->netdev_ops;
 		if (!del_bulk) {
 			if (ops->ndo_fdb_del)
-				err = ops->ndo_fdb_del(ndm, tb, dev, addr, vid, extack);
+				err = ops->ndo_fdb_del(ndm, tb, dev, addr, vid,
+						       &notified, extack);
 			else
 				err = ndo_dflt_fdb_del(ndm, tb, dev, addr, vid);
 		} else {
@@ -4733,7 +4738,7 @@  static int rtnl_fdb_del(struct sk_buff *skb, struct nlmsghdr *nlh,
 		}
 
 		if (!err) {
-			if (!del_bulk)
+			if (!del_bulk && !notified)
 				rtnl_fdb_notify(dev, addr, vid, RTM_DELNEIGH,
 						ndm->ndm_state);
 			ndm->ndm_flags &= ~NTF_SELF;