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ndo_fdb_del: Add a parameter to report whether notification was sent

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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>
Link: https://patch.msgid.link/06b1acf4953ef0a5ed153ef1f32d7292044f2be6.1731589511.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Petr Machata 2024-11-14 15:09:54 +01:00 committed by Jakub Kicinski
parent 4b42fbc6bd
commit 42575ad5aa
9 changed files with 34 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/net/ethernet/intel/ice/ice_main.c
View File

@ -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;

2
drivers/net/ethernet/mscc/ocelot_net.c
View File

@ -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;

2
drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
View File

@ -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);

2
drivers/net/macvlan.c
View File

@ -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);

5
drivers/net/vxlan/vxlan_core.c
View File

@ -1319,7 +1319,7 @@ out:
/* 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;
}

9
include/linux/netdevice.h
View File

@ -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);

15
net/bridge/br_fdb.c
View File

@ -1287,7 +1287,7 @@ out:
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);
}
}

2
net/bridge/br_private.h
View File

@ -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,

11
net/core/rtnetlink.c
View File

@ -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;