diff options
| author | Amit Cohen <amcohen@nvidia.com> | 2023-10-09 13:06:09 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-10-13 12:00:30 +0300 |
| commit | bfe36bf7811c3171e546a956377ea16e89ecf838 (patch) | |
| tree | df525d446fb5d2cb5744a13cde68abc83b8b33f0 /drivers/net | |
| parent | 38985e8c278b82e6d4d62d4acd57c761cc23ce63 (diff) | |
| download | linux-bfe36bf7811c3171e546a956377ea16e89ecf838.tar.xz | |
vxlan: vxlan_core: Make vxlan_flush() more generic for future use
The function vxlan_flush() gets a boolean called 'do_all' and in case
that it is false, it does not flush entries with state 'NUD_PERMANENT'
or 'NUD_NOARP'. The following patches will add support for FDB flush
with parameters from user space. Make the function more generic, so it
can be used later.
Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/vxlan/vxlan_core.c | 30 |
1 files changed, 26 insertions, 4 deletions
diff --git a/drivers/net/vxlan/vxlan_core.c b/drivers/net/vxlan/vxlan_core.c index 5b5597073b00..1c58fddb7df4 100644 --- a/drivers/net/vxlan/vxlan_core.c +++ b/drivers/net/vxlan/vxlan_core.c @@ -3022,8 +3022,23 @@ static int vxlan_open(struct net_device *dev) return ret; } +struct vxlan_fdb_flush_desc { + unsigned long state; + unsigned long state_mask; +}; + +static bool vxlan_fdb_flush_matches(const struct vxlan_fdb *f, + const struct vxlan_fdb_flush_desc *desc) +{ + if (desc->state_mask && (f->state & desc->state_mask) != desc->state) + return false; + + return true; +} + /* Purge the forwarding table */ -static void vxlan_flush(struct vxlan_dev *vxlan, bool do_all) +static void vxlan_flush(struct vxlan_dev *vxlan, + const struct vxlan_fdb_flush_desc *desc) { unsigned int h; @@ -3034,8 +3049,10 @@ static void vxlan_flush(struct vxlan_dev *vxlan, bool do_all) hlist_for_each_safe(p, n, &vxlan->fdb_head[h]) { struct vxlan_fdb *f = container_of(p, struct vxlan_fdb, hlist); - if (!do_all && (f->state & (NUD_PERMANENT | NUD_NOARP))) + + if (!vxlan_fdb_flush_matches(f, desc)) continue; + /* the all_zeros_mac entry is deleted at vxlan_uninit */ if (is_zero_ether_addr(f->eth_addr) && f->vni == vxlan->cfg.vni) @@ -3050,12 +3067,16 @@ static void vxlan_flush(struct vxlan_dev *vxlan, bool do_all) static int vxlan_stop(struct net_device *dev) { struct vxlan_dev *vxlan = netdev_priv(dev); + struct vxlan_fdb_flush_desc desc = { + .state = 0, + .state_mask = NUD_PERMANENT | NUD_NOARP, + }; vxlan_multicast_leave(vxlan); del_timer_sync(&vxlan->age_timer); - vxlan_flush(vxlan, false); + vxlan_flush(vxlan, &desc); vxlan_sock_release(vxlan); return 0; @@ -4294,8 +4315,9 @@ static int vxlan_changelink(struct net_device *dev, struct nlattr *tb[], static void vxlan_dellink(struct net_device *dev, struct list_head *head) { struct vxlan_dev *vxlan = netdev_priv(dev); + struct vxlan_fdb_flush_desc desc = {}; - vxlan_flush(vxlan, true); + vxlan_flush(vxlan, &desc); list_del(&vxlan->next); unregister_netdevice_queue(dev, head); |