netdev - [PATCH net-next v2 3/8] ndo_fdb_del: Shift responsibility for notifying to drivers

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <8a28bbbe632e48613887aa7371cdc93ada36b0e5.1729786087.git.petrm@nvidia.com>
Date: Thu, 24 Oct 2024 18:57:38 +0200
From: Petr Machata <petrm@...dia.com>
To: "David S. Miller" <davem@...emloft.net>, Eric Dumazet
	<edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni
	<pabeni@...hat.com>, <netdev@...r.kernel.org>
CC: Ido Schimmel <idosch@...dia.com>, Petr Machata <petrm@...dia.com>, "Amit
 Cohen" <amcohen@...dia.com>, Vladimir Oltean <vladimir.oltean@....com>, "Andy
 Roulin" <aroulin@...dia.com>, <mlxsw@...dia.com>, Przemek Kitszel
	<przemyslaw.kitszel@...el.com>, <intel-wired-lan@...ts.osuosl.org>,
	<UNGLinuxDriver@...rochip.com>, Manish Chopra <manishc@...vell.com>,
	<GR-Linux-NIC-Dev@...vell.com>, Kuniyuki Iwashima <kuniyu@...zon.com>,
	"Andrew Lunn" <andrew+netdev@...n.ch>
Subject: [PATCH net-next v2 3/8] ndo_fdb_del: Shift responsibility for notifying to drivers

As described in the previous patch, the drivers that provide their own
fdb_add and fdb_del callbacks should from now on be responsible for sending
the notification themselves. In this patch, implement the fdb_del leg of
the change.

Signed-off-by: Petr Machata <petrm@...dia.com>
Reviewed-by: Amit Cohen <amcohen@...dia.com>
---

Notes:
    v2:
    - Fix qlcnic build
---
CC: Przemek Kitszel <przemyslaw.kitszel@...el.com>
CC: intel-wired-lan@...ts.osuosl.org
CC: UNGLinuxDriver@...rochip.com
CC: Manish Chopra <manishc@...vell.com>
CC: GR-Linux-NIC-Dev@...vell.com
CC: Kuniyuki Iwashima <kuniyu@...zon.com>
CC: Andrew Lunn <andrew+netdev@...n.ch>

 drivers/net/ethernet/intel/ice/ice_main.c        | 3 +++
 drivers/net/ethernet/mscc/ocelot_net.c           | 8 +++++++-
 drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c | 5 +++++
 drivers/net/macvlan.c                            | 3 +++
 include/linux/netdevice.h                        | 2 ++
 net/core/rtnetlink.c                             | 9 ++++-----
 6 files changed, 24 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index a3398814a1cb..65f9dcf4745b 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -6188,6 +6188,9 @@ ice_fdb_del(struct ndmsg *ndm, __always_unused struct nlattr *tb[],
 	else
 		err = -EINVAL;
 
+	if (!err)
+		rtnl_fdb_notify(dev, addr, vid, RTM_DELNEIGH, ndm->ndm_state);
+
 	return err;
 }
 
diff --git a/drivers/net/ethernet/mscc/ocelot_net.c b/drivers/net/ethernet/mscc/ocelot_net.c
index cf972444e254..12958d985fd7 100644
--- a/drivers/net/ethernet/mscc/ocelot_net.c
+++ b/drivers/net/ethernet/mscc/ocelot_net.c
@@ -756,8 +756,14 @@ static int ocelot_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
 	struct ocelot_port *ocelot_port = &priv->port;
 	struct ocelot *ocelot = ocelot_port->ocelot;
 	int port = priv->port.index;
+	int err;
 
-	return ocelot_fdb_del(ocelot, port, addr, vid, ocelot_port->bridge);
+	err = ocelot_fdb_del(ocelot, port, addr, vid, ocelot_port->bridge);
+
+	if (!err)
+		rtnl_fdb_notify(dev, addr, vid, RTM_DELNEIGH, ndm->ndm_state);
+
+	return err;
 }
 
 static int ocelot_port_fdb_do_dump(const unsigned char *addr, u16 vid,
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
index 584c85c10292..88308c30f88e 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
@@ -388,6 +388,11 @@ static int qlcnic_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
 			err =  -EINVAL;
 		}
 	}
+
+	if (!err)
+		rtnl_fdb_notify(netdev, addr, vid, RTM_DELNEIGH,
+				ndm->ndm_state);
+
 	return err;
 }
 
diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c
index b1e828581ec4..2c61b7b83875 100644
--- a/drivers/net/macvlan.c
+++ b/drivers/net/macvlan.c
@@ -1069,6 +1069,9 @@ static int macvlan_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
 	else if (is_multicast_ether_addr(addr))
 		err = dev_mc_del(dev, addr);
 
+	if (!err)
+		rtnl_fdb_notify(dev, addr, vid, RTM_DELNEIGH, ndm->ndm_state);
+
 	return err;
 }
 
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 9f7de8d0414a..9e1ffb21de18 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1254,6 +1254,8 @@ struct netdev_net_notifier {
  *		      struct net_device *dev,
  *		      const unsigned char *addr, u16 vid)
  *	Deletes the FDB entry from dev corresponding to addr.
+ *	Callee is responsible for sending appropriate notification, as with
+ *	ndo_fdb_add().
  * 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,
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index a9f56a50fa57..4788bfc58aa2 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -4506,6 +4506,9 @@ int ndo_dflt_fdb_del(struct ndmsg *ndm,
 	else if (is_multicast_ether_addr(addr))
 		err = dev_mc_del(dev, addr);
 
+	if (!err)
+		rtnl_fdb_notify(dev, addr, vid, RTM_DELNEIGH, ndm->ndm_state);
+
 	return err;
 }
 EXPORT_SYMBOL(ndo_dflt_fdb_del);
@@ -4604,12 +4607,8 @@ static int rtnl_fdb_del(struct sk_buff *skb, struct nlmsghdr *nlh,
 				err = ops->ndo_fdb_del_bulk(nlh, dev, extack);
 		}
 
-		if (!err) {
-			if (!del_bulk)
-				rtnl_fdb_notify(dev, addr, vid, RTM_DELNEIGH,
-						ndm->ndm_state);
+		if (!err)
 			ndm->ndm_flags &= ~NTF_SELF;
-		}
 	}
 out:
 	return err;
-- 
2.45.0