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| author |   Petr Machata <petrm@mellanox.com> | 2018-10-17 08:53:22 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-10-17 17:45:08 -0700 |
| commit | 9a99735317866e821c75f957fc85c63d049d330c (patch) | |
| tree | fff45955da03997f6e2eddaec8811e4bad5aeb09 /drivers/net/vxlan.c | |
| parent | net: Add netif_is_vxlan() (diff) | |
| download | linux-dev-9a99735317866e821c75f957fc85c63d049d330c.tar.xz linux-dev-9a99735317866e821c75f957fc85c63d049d330c.zip | |
vxlan: Add switchdev notifications
When offloading VXLAN devices, drivers need to know about events in
VXLAN FDB database. Since VXLAN models a bridge, it is natural to
distribute the VXLAN FDB notifications using the pre-existing switchdev
notification mechanism.
To that end, introduce two new notification types:
SWITCHDEV_VXLAN_FDB_ADD_TO_DEVICE and SWITCHDEV_VXLAN_FDB_DEL_TO_DEVICE.
Introduce a new function, vxlan_fdb_switchdev_call_notifiers() to send
the new notifier types, and a struct switchdev_notifier_vxlan_fdb_info
to communicate the details of the FDB entry under consideration.
Invoke the new function from vxlan_fdb_notify().
Signed-off-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/vxlan.c')
| -rw-r--r-- | drivers/net/vxlan.c | 46 |
1 files changed, 44 insertions, 2 deletions
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index 0fc2b1d82d4c..de5caa2f6aac 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -327,8 +327,8 @@ static inline size_t vxlan_nlmsg_size(void) + nla_total_size(sizeof(struct nda_cacheinfo)); } -static void vxlan_fdb_notify(struct vxlan_dev *vxlan, struct vxlan_fdb *fdb, - struct vxlan_rdst *rd, int type) +static void __vxlan_fdb_notify(struct vxlan_dev *vxlan, struct vxlan_fdb *fdb, + struct vxlan_rdst *rd, int type) { struct net *net = dev_net(vxlan->dev); struct sk_buff *skb; @@ -353,6 +353,48 @@ errout: rtnl_set_sk_err(net, RTNLGRP_NEIGH, err); } +static void vxlan_fdb_switchdev_call_notifiers(struct vxlan_dev *vxlan, + struct vxlan_fdb *fdb, + struct vxlan_rdst *rd, + bool adding) +{ + struct switchdev_notifier_vxlan_fdb_info info; + enum switchdev_notifier_type notifier_type; + + if (WARN_ON(!rd)) + return; + + notifier_type = adding ? SWITCHDEV_VXLAN_FDB_ADD_TO_DEVICE + : SWITCHDEV_VXLAN_FDB_DEL_TO_DEVICE; + + info = (struct switchdev_notifier_vxlan_fdb_info){ + .remote_ip = rd->remote_ip, + .remote_port = rd->remote_port, + .remote_vni = rd->remote_vni, + .remote_ifindex = rd->remote_ifindex, + .vni = fdb->vni, + }; + memcpy(info.eth_addr, fdb->eth_addr, ETH_ALEN); + + call_switchdev_notifiers(notifier_type, vxlan->dev, + &info.info); +} + +static void vxlan_fdb_notify(struct vxlan_dev *vxlan, struct vxlan_fdb *fdb, + struct vxlan_rdst *rd, int type) +{ + switch (type) { + case RTM_NEWNEIGH: + vxlan_fdb_switchdev_call_notifiers(vxlan, fdb, rd, true); + break; + case RTM_DELNEIGH: + vxlan_fdb_switchdev_call_notifiers(vxlan, fdb, rd, false); + break; + } + + __vxlan_fdb_notify(vxlan, fdb, rd, type); +} + static void vxlan_ip_miss(struct net_device *dev, union vxlan_addr *ipa) { struct vxlan_dev *vxlan = netdev_priv(dev); |