Commit d75b9e80 authored by Vlad Buslov's avatar Vlad Buslov Committed by Saeed Mahameed

net/mlx5: Bridge, implement infrastructure for vlans

Establish all the necessary infrastructure for implementing vlan matching
and vlan push/pop in following patches:

- Add new per-vport struct mlx5_esw_bridge_port that is used to store
metadata for all port vlans. Initialize and cleanup the instance of the
structure when port representor is linked/unliked to bridge. Use xarray to
allow quick vport metadata lookup by vport number.

- Add new per-port-vlan struct mlx5_esw_bridge_vlan that is used to store
vlan-specific data (vid, flags). Handle SWITCHDEV_PORT_OBJ_{ADD|DEL}
switchdev blocking event for SWITCHDEV_OBJ_ID_PORT_VLAN object by
creating/deleting the vlan structure and saving it in per-vport xarray for
quick lookup.

- Implement support for SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING object
attribute that is used to toggle vlan filtering. Remove all FDB entries
from hardware when vlan filtering state is changed.
Signed-off-by: default avatarVlad Buslov <vladbu@nvidia.com>
Reviewed-by: default avatarJianbo Liu <jianbol@nvidia.com>
Signed-off-by: default avatarSaeed Mahameed <saeedm@nvidia.com>
parent c636a0f0
......@@ -75,6 +75,66 @@ static int mlx5_esw_bridge_switchdev_port_event(struct notifier_block *nb,
return notifier_from_errno(err);
}
static int mlx5_esw_bridge_port_obj_add(struct net_device *dev,
const struct switchdev_obj *obj,
struct netlink_ext_ack *extack)
{
const struct switchdev_obj_port_vlan *vlan;
struct mlx5e_rep_priv *rpriv;
struct mlx5_eswitch *esw;
struct mlx5_vport *vport;
struct mlx5e_priv *priv;
u16 vport_num;
int err = 0;
priv = netdev_priv(dev);
rpriv = priv->ppriv;
vport_num = rpriv->rep->vport;
esw = priv->mdev->priv.eswitch;
vport = mlx5_eswitch_get_vport(esw, vport_num);
if (IS_ERR(vport))
return PTR_ERR(vport);
switch (obj->id) {
case SWITCHDEV_OBJ_ID_PORT_VLAN:
vlan = SWITCHDEV_OBJ_PORT_VLAN(obj);
err = mlx5_esw_bridge_port_vlan_add(vlan->vid, vlan->flags, esw, vport, extack);
break;
default:
return -EOPNOTSUPP;
}
return err;
}
static int mlx5_esw_bridge_port_obj_del(struct net_device *dev,
const struct switchdev_obj *obj)
{
const struct switchdev_obj_port_vlan *vlan;
struct mlx5e_rep_priv *rpriv;
struct mlx5_eswitch *esw;
struct mlx5_vport *vport;
struct mlx5e_priv *priv;
u16 vport_num;
priv = netdev_priv(dev);
rpriv = priv->ppriv;
vport_num = rpriv->rep->vport;
esw = priv->mdev->priv.eswitch;
vport = mlx5_eswitch_get_vport(esw, vport_num);
if (IS_ERR(vport))
return PTR_ERR(vport);
switch (obj->id) {
case SWITCHDEV_OBJ_ID_PORT_VLAN:
vlan = SWITCHDEV_OBJ_PORT_VLAN(obj);
mlx5_esw_bridge_port_vlan_del(vlan->vid, esw, vport);
break;
default:
return -EOPNOTSUPP;
}
return 0;
}
static int mlx5_esw_bridge_port_obj_attr_set(struct net_device *dev,
const struct switchdev_attr *attr,
struct netlink_ext_ack *extack)
......@@ -106,6 +166,9 @@ static int mlx5_esw_bridge_port_obj_attr_set(struct net_device *dev,
case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
err = mlx5_esw_bridge_ageing_time_set(attr->u.ageing_time, esw, vport);
break;
case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
err = mlx5_esw_bridge_vlan_filtering_set(attr->u.vlan_filtering, esw, vport);
break;
default:
err = -EOPNOTSUPP;
}
......@@ -120,6 +183,16 @@ static int mlx5_esw_bridge_event_blocking(struct notifier_block *unused,
int err;
switch (event) {
case SWITCHDEV_PORT_OBJ_ADD:
err = switchdev_handle_port_obj_add(dev, ptr,
mlx5e_eswitch_rep,
mlx5_esw_bridge_port_obj_add);
break;
case SWITCHDEV_PORT_OBJ_DEL:
err = switchdev_handle_port_obj_del(dev, ptr,
mlx5e_eswitch_rep,
mlx5_esw_bridge_port_obj_del);
break;
case SWITCHDEV_PORT_ATTR_SET:
err = switchdev_handle_port_attr_set(dev, ptr,
mlx5e_eswitch_rep,
......
......@@ -4,6 +4,7 @@
#include <linux/netdevice.h>
#include <linux/list.h>
#include <linux/rhashtable.h>
#include <linux/xarray.h>
#include <linux/if_bridge.h>
#include <net/switchdev.h>
#include "bridge.h"
......@@ -53,6 +54,20 @@ static const struct rhashtable_params fdb_ht_params = {
.automatic_shrinking = true,
};
struct mlx5_esw_bridge_vlan {
u16 vid;
u16 flags;
};
struct mlx5_esw_bridge_port {
u16 vport_num;
struct xarray vlans;
};
enum {
MLX5_ESW_BRIDGE_VLAN_FILTERING_FLAG = BIT(0),
};
struct mlx5_esw_bridge {
int ifindex;
int refcnt;
......@@ -61,10 +76,12 @@ struct mlx5_esw_bridge {
struct list_head fdb_list;
struct rhashtable fdb_ht;
struct xarray vports;
struct mlx5_flow_table *egress_ft;
struct mlx5_flow_group *egress_mac_fg;
unsigned long ageing_time;
u32 flags;
};
static void
......@@ -345,6 +362,7 @@ static struct mlx5_esw_bridge *mlx5_esw_bridge_create(int ifindex,
goto err_fdb_ht;
INIT_LIST_HEAD(&bridge->fdb_list);
xa_init(&bridge->vports);
bridge->ifindex = ifindex;
bridge->refcnt = 1;
bridge->ageing_time = BR_DEFAULT_AGEING_TIME;
......@@ -371,6 +389,7 @@ static void mlx5_esw_bridge_put(struct mlx5_esw_bridge_offloads *br_offloads,
return;
mlx5_esw_bridge_egress_table_cleanup(bridge);
WARN_ON(!xa_empty(&bridge->vports));
list_del(&bridge->list);
rhashtable_destroy(&bridge->fdb_ht);
kvfree(bridge);
......@@ -406,6 +425,24 @@ mlx5_esw_bridge_lookup(int ifindex, struct mlx5_esw_bridge_offloads *br_offloads
return bridge;
}
static int mlx5_esw_bridge_port_insert(struct mlx5_esw_bridge_port *port,
struct mlx5_esw_bridge *bridge)
{
return xa_insert(&bridge->vports, port->vport_num, port, GFP_KERNEL);
}
static struct mlx5_esw_bridge_port *
mlx5_esw_bridge_port_lookup(u16 vport_num, struct mlx5_esw_bridge *bridge)
{
return xa_load(&bridge->vports, vport_num);
}
static void mlx5_esw_bridge_port_erase(struct mlx5_esw_bridge_port *port,
struct mlx5_esw_bridge *bridge)
{
xa_erase(&bridge->vports, port->vport_num);
}
static void
mlx5_esw_bridge_fdb_entry_cleanup(struct mlx5_esw_bridge_fdb_entry *entry,
struct mlx5_esw_bridge *bridge)
......@@ -418,6 +455,68 @@ mlx5_esw_bridge_fdb_entry_cleanup(struct mlx5_esw_bridge_fdb_entry *entry,
kvfree(entry);
}
static void mlx5_esw_bridge_fdb_flush(struct mlx5_esw_bridge *bridge)
{
struct mlx5_esw_bridge_fdb_entry *entry, *tmp;
list_for_each_entry_safe(entry, tmp, &bridge->fdb_list, list) {
if (!(entry->flags & MLX5_ESW_BRIDGE_FLAG_ADDED_BY_USER))
mlx5_esw_bridge_fdb_offload_notify(entry->dev, entry->key.addr,
entry->key.vid,
SWITCHDEV_FDB_DEL_TO_BRIDGE);
mlx5_esw_bridge_fdb_entry_cleanup(entry, bridge);
}
}
static struct mlx5_esw_bridge_vlan *
mlx5_esw_bridge_vlan_lookup(u16 vid, struct mlx5_esw_bridge_port *port)
{
return xa_load(&port->vlans, vid);
}
static struct mlx5_esw_bridge_vlan *
mlx5_esw_bridge_vlan_create(u16 vid, u16 flags, struct mlx5_esw_bridge_port *port)
{
struct mlx5_esw_bridge_vlan *vlan;
int err;
vlan = kvzalloc(sizeof(*vlan), GFP_KERNEL);
if (!vlan)
return ERR_PTR(-ENOMEM);
vlan->vid = vid;
vlan->flags = flags;
err = xa_insert(&port->vlans, vid, vlan, GFP_KERNEL);
if (err) {
kvfree(vlan);
return ERR_PTR(err);
}
return vlan;
}
static void mlx5_esw_bridge_vlan_erase(struct mlx5_esw_bridge_port *port,
struct mlx5_esw_bridge_vlan *vlan)
{
xa_erase(&port->vlans, vlan->vid);
}
static void mlx5_esw_bridge_vlan_cleanup(struct mlx5_esw_bridge_port *port,
struct mlx5_esw_bridge_vlan *vlan)
{
mlx5_esw_bridge_vlan_erase(port, vlan);
kvfree(vlan);
}
static void mlx5_esw_bridge_port_vlans_flush(struct mlx5_esw_bridge_port *port)
{
struct mlx5_esw_bridge_vlan *vlan;
unsigned long index;
xa_for_each(&port->vlans, index, vlan)
mlx5_esw_bridge_vlan_cleanup(port, vlan);
}
static struct mlx5_esw_bridge_fdb_entry *
mlx5_esw_bridge_fdb_entry_init(struct net_device *dev, u16 vport_num, const unsigned char *addr,
u16 vid, bool added_by_user, struct mlx5_eswitch *esw,
......@@ -498,11 +597,60 @@ int mlx5_esw_bridge_ageing_time_set(unsigned long ageing_time, struct mlx5_eswit
return 0;
}
static int mlx5_esw_bridge_vport_init(struct mlx5_esw_bridge *bridge,
int mlx5_esw_bridge_vlan_filtering_set(bool enable, struct mlx5_eswitch *esw,
struct mlx5_vport *vport)
{
struct mlx5_esw_bridge *bridge;
bool filtering;
if (!vport->bridge)
return -EINVAL;
bridge = vport->bridge;
filtering = bridge->flags & MLX5_ESW_BRIDGE_VLAN_FILTERING_FLAG;
if (filtering == enable)
return 0;
mlx5_esw_bridge_fdb_flush(bridge);
if (enable)
bridge->flags |= MLX5_ESW_BRIDGE_VLAN_FILTERING_FLAG;
else
bridge->flags &= ~MLX5_ESW_BRIDGE_VLAN_FILTERING_FLAG;
return 0;
}
static int mlx5_esw_bridge_vport_init(struct mlx5_esw_bridge_offloads *br_offloads,
struct mlx5_esw_bridge *bridge,
struct mlx5_vport *vport)
{
struct mlx5_eswitch *esw = br_offloads->esw;
struct mlx5_esw_bridge_port *port;
int err;
port = kvzalloc(sizeof(*port), GFP_KERNEL);
if (!port) {
err = -ENOMEM;
goto err_port_alloc;
}
port->vport_num = vport->vport;
xa_init(&port->vlans);
err = mlx5_esw_bridge_port_insert(port, bridge);
if (err) {
esw_warn(esw->dev, "Failed to insert port metadata (vport=%u,err=%d)\n",
vport->vport, err);
goto err_port_insert;
}
vport->bridge = bridge;
return 0;
err_port_insert:
kvfree(port);
err_port_alloc:
mlx5_esw_bridge_put(br_offloads, bridge);
return err;
}
static int mlx5_esw_bridge_vport_cleanup(struct mlx5_esw_bridge_offloads *br_offloads,
......@@ -510,11 +658,21 @@ static int mlx5_esw_bridge_vport_cleanup(struct mlx5_esw_bridge_offloads *br_off
{
struct mlx5_esw_bridge *bridge = vport->bridge;
struct mlx5_esw_bridge_fdb_entry *entry, *tmp;
struct mlx5_esw_bridge_port *port;
list_for_each_entry_safe(entry, tmp, &bridge->fdb_list, list)
if (entry->vport_num == vport->vport)
mlx5_esw_bridge_fdb_entry_cleanup(entry, bridge);
port = mlx5_esw_bridge_port_lookup(vport->vport, bridge);
if (!port) {
WARN(1, "Vport %u metadata not found on bridge", vport->vport);
return -EINVAL;
}
mlx5_esw_bridge_port_vlans_flush(port);
mlx5_esw_bridge_port_erase(port, bridge);
kvfree(port);
mlx5_esw_bridge_put(br_offloads, bridge);
vport->bridge = NULL;
return 0;
......@@ -524,6 +682,7 @@ int mlx5_esw_bridge_vport_link(int ifindex, struct mlx5_esw_bridge_offloads *br_
struct mlx5_vport *vport, struct netlink_ext_ack *extack)
{
struct mlx5_esw_bridge *bridge;
int err;
WARN_ON(vport->bridge);
......@@ -533,13 +692,17 @@ int mlx5_esw_bridge_vport_link(int ifindex, struct mlx5_esw_bridge_offloads *br_
return PTR_ERR(bridge);
}
return mlx5_esw_bridge_vport_init(bridge, vport);
err = mlx5_esw_bridge_vport_init(br_offloads, bridge, vport);
if (err)
NL_SET_ERR_MSG_MOD(extack, "Error initializing port");
return err;
}
int mlx5_esw_bridge_vport_unlink(int ifindex, struct mlx5_esw_bridge_offloads *br_offloads,
struct mlx5_vport *vport, struct netlink_ext_ack *extack)
{
struct mlx5_esw_bridge *bridge = vport->bridge;
int err;
if (!bridge) {
NL_SET_ERR_MSG_MOD(extack, "Port is not attached to any bridge");
......@@ -550,7 +713,49 @@ int mlx5_esw_bridge_vport_unlink(int ifindex, struct mlx5_esw_bridge_offloads *b
return -EINVAL;
}
return mlx5_esw_bridge_vport_cleanup(br_offloads, vport);
err = mlx5_esw_bridge_vport_cleanup(br_offloads, vport);
if (err)
NL_SET_ERR_MSG_MOD(extack, "Port cleanup failed");
return err;
}
int mlx5_esw_bridge_port_vlan_add(u16 vid, u16 flags, struct mlx5_eswitch *esw,
struct mlx5_vport *vport, struct netlink_ext_ack *extack)
{
struct mlx5_esw_bridge_port *port;
struct mlx5_esw_bridge_vlan *vlan;
port = mlx5_esw_bridge_port_lookup(vport->vport, vport->bridge);
if (!port)
return -EINVAL;
vlan = mlx5_esw_bridge_vlan_lookup(vid, port);
if (vlan) {
vlan->flags = flags;
return 0;
}
vlan = mlx5_esw_bridge_vlan_create(vid, flags, port);
if (IS_ERR(vlan)) {
NL_SET_ERR_MSG_MOD(extack, "Failed to create VLAN entry");
return PTR_ERR(vlan);
}
return 0;
}
void mlx5_esw_bridge_port_vlan_del(u16 vid, struct mlx5_eswitch *esw, struct mlx5_vport *vport)
{
struct mlx5_esw_bridge_port *port;
struct mlx5_esw_bridge_vlan *vlan;
port = mlx5_esw_bridge_port_lookup(vport->vport, vport->bridge);
if (!port)
return;
vlan = mlx5_esw_bridge_vlan_lookup(vid, port);
if (!vlan)
return;
mlx5_esw_bridge_vlan_cleanup(port, vlan);
}
void mlx5_esw_bridge_fdb_create(struct net_device *dev, struct mlx5_eswitch *esw,
......
......@@ -40,5 +40,10 @@ void mlx5_esw_bridge_fdb_remove(struct net_device *dev, struct mlx5_eswitch *esw
void mlx5_esw_bridge_update(struct mlx5_esw_bridge_offloads *br_offloads);
int mlx5_esw_bridge_ageing_time_set(unsigned long ageing_time, struct mlx5_eswitch *esw,
struct mlx5_vport *vport);
int mlx5_esw_bridge_vlan_filtering_set(bool enable, struct mlx5_eswitch *esw,
struct mlx5_vport *vport);
int mlx5_esw_bridge_port_vlan_add(u16 vid, u16 flags, struct mlx5_eswitch *esw,
struct mlx5_vport *vport, struct netlink_ext_ack *extack);
void mlx5_esw_bridge_port_vlan_del(u16 vid, struct mlx5_eswitch *esw, struct mlx5_vport *vport);
#endif /* __MLX5_ESW_BRIDGE_H__ */
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