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OpenCloudOS-Kernel/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c

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/*
* drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
* Copyright (c) 2015 Mellanox Technologies. All rights reserved.
* Copyright (c) 2015 Jiri Pirko <jiri@mellanox.com>
* Copyright (c) 2015 Ido Schimmel <idosch@mellanox.com>
* Copyright (c) 2015 Elad Raz <eladr@mellanox.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the names of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/slab.h>
#include <linux/device.h>
#include <linux/skbuff.h>
#include <linux/if_vlan.h>
#include <linux/if_bridge.h>
#include <linux/workqueue.h>
#include <linux/jiffies.h>
#include <linux/rtnetlink.h>
#include <net/switchdev.h>
#include "spectrum.h"
#include "core.h"
#include "reg.h"
struct mlxsw_sp_bridge_ops;
struct mlxsw_sp_bridge {
struct mlxsw_sp *mlxsw_sp;
struct {
struct delayed_work dw;
#define MLXSW_SP_DEFAULT_LEARNING_INTERVAL 100
unsigned int interval; /* ms */
} fdb_notify;
#define MLXSW_SP_MIN_AGEING_TIME 10
#define MLXSW_SP_MAX_AGEING_TIME 1000000
#define MLXSW_SP_DEFAULT_AGEING_TIME 300
u32 ageing_time;
bool vlan_enabled_exists;
struct list_head bridges_list;
DECLARE_BITMAP(mids_bitmap, MLXSW_SP_MID_MAX);
const struct mlxsw_sp_bridge_ops *bridge_8021q_ops;
const struct mlxsw_sp_bridge_ops *bridge_8021d_ops;
};
struct mlxsw_sp_bridge_device {
struct net_device *dev;
struct list_head list;
struct list_head ports_list;
struct list_head mids_list;
u8 vlan_enabled:1,
multicast_enabled:1;
const struct mlxsw_sp_bridge_ops *ops;
};
struct mlxsw_sp_bridge_port {
struct net_device *dev;
struct mlxsw_sp_bridge_device *bridge_device;
struct list_head list;
struct list_head vlans_list;
unsigned int ref_count;
u8 stp_state;
unsigned long flags;
bool mrouter;
bool lagged;
union {
u16 lag_id;
u16 system_port;
};
};
struct mlxsw_sp_bridge_vlan {
struct list_head list;
struct list_head port_vlan_list;
u16 vid;
};
struct mlxsw_sp_bridge_ops {
int (*port_join)(struct mlxsw_sp_bridge_device *bridge_device,
struct mlxsw_sp_bridge_port *bridge_port,
struct mlxsw_sp_port *mlxsw_sp_port);
void (*port_leave)(struct mlxsw_sp_bridge_device *bridge_device,
struct mlxsw_sp_bridge_port *bridge_port,
struct mlxsw_sp_port *mlxsw_sp_port);
struct mlxsw_sp_fid *
(*fid_get)(struct mlxsw_sp_bridge_device *bridge_device,
u16 vid);
};
static int
mlxsw_sp_bridge_port_fdb_flush(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_bridge_port *bridge_port,
u16 fid_index);
static void
mlxsw_sp_bridge_port_mdb_flush(struct mlxsw_sp_port *mlxsw_sp_port,
struct mlxsw_sp_bridge_port *bridge_port);
static void
mlxsw_sp_bridge_mdb_mc_enable_sync(struct mlxsw_sp_port *mlxsw_sp_port,
struct mlxsw_sp_bridge_device
*bridge_device);
static void
mlxsw_sp_port_mrouter_update_mdb(struct mlxsw_sp_port *mlxsw_sp_port,
struct mlxsw_sp_bridge_port *bridge_port,
bool add);
static struct mlxsw_sp_bridge_device *
mlxsw_sp_bridge_device_find(const struct mlxsw_sp_bridge *bridge,
const struct net_device *br_dev)
{
struct mlxsw_sp_bridge_device *bridge_device;
list_for_each_entry(bridge_device, &bridge->bridges_list, list)
if (bridge_device->dev == br_dev)
return bridge_device;
return NULL;
}
static struct mlxsw_sp_bridge_device *
mlxsw_sp_bridge_device_create(struct mlxsw_sp_bridge *bridge,
struct net_device *br_dev)
{
struct device *dev = bridge->mlxsw_sp->bus_info->dev;
struct mlxsw_sp_bridge_device *bridge_device;
bool vlan_enabled = br_vlan_enabled(br_dev);
if (vlan_enabled && bridge->vlan_enabled_exists) {
dev_err(dev, "Only one VLAN-aware bridge is supported\n");
return ERR_PTR(-EINVAL);
}
bridge_device = kzalloc(sizeof(*bridge_device), GFP_KERNEL);
if (!bridge_device)
return ERR_PTR(-ENOMEM);
bridge_device->dev = br_dev;
bridge_device->vlan_enabled = vlan_enabled;
bridge_device->multicast_enabled = br_multicast_enabled(br_dev);
INIT_LIST_HEAD(&bridge_device->ports_list);
if (vlan_enabled) {
bridge->vlan_enabled_exists = true;
bridge_device->ops = bridge->bridge_8021q_ops;
} else {
bridge_device->ops = bridge->bridge_8021d_ops;
}
INIT_LIST_HEAD(&bridge_device->mids_list);
list_add(&bridge_device->list, &bridge->bridges_list);
return bridge_device;
}
static void
mlxsw_sp_bridge_device_destroy(struct mlxsw_sp_bridge *bridge,
struct mlxsw_sp_bridge_device *bridge_device)
{
list_del(&bridge_device->list);
if (bridge_device->vlan_enabled)
bridge->vlan_enabled_exists = false;
WARN_ON(!list_empty(&bridge_device->ports_list));
WARN_ON(!list_empty(&bridge_device->mids_list));
kfree(bridge_device);
}
static struct mlxsw_sp_bridge_device *
mlxsw_sp_bridge_device_get(struct mlxsw_sp_bridge *bridge,
struct net_device *br_dev)
{
struct mlxsw_sp_bridge_device *bridge_device;
bridge_device = mlxsw_sp_bridge_device_find(bridge, br_dev);
if (bridge_device)
return bridge_device;
return mlxsw_sp_bridge_device_create(bridge, br_dev);
}
static void
mlxsw_sp_bridge_device_put(struct mlxsw_sp_bridge *bridge,
struct mlxsw_sp_bridge_device *bridge_device)
{
if (list_empty(&bridge_device->ports_list))
mlxsw_sp_bridge_device_destroy(bridge, bridge_device);
}
static struct mlxsw_sp_bridge_port *
__mlxsw_sp_bridge_port_find(const struct mlxsw_sp_bridge_device *bridge_device,
const struct net_device *brport_dev)
{
struct mlxsw_sp_bridge_port *bridge_port;
list_for_each_entry(bridge_port, &bridge_device->ports_list, list) {
if (bridge_port->dev == brport_dev)
return bridge_port;
}
return NULL;
}
static struct mlxsw_sp_bridge_port *
mlxsw_sp_bridge_port_find(struct mlxsw_sp_bridge *bridge,
struct net_device *brport_dev)
{
struct net_device *br_dev = netdev_master_upper_dev_get(brport_dev);
struct mlxsw_sp_bridge_device *bridge_device;
if (!br_dev)
return NULL;
bridge_device = mlxsw_sp_bridge_device_find(bridge, br_dev);
if (!bridge_device)
return NULL;
return __mlxsw_sp_bridge_port_find(bridge_device, brport_dev);
}
static struct mlxsw_sp_bridge_port *
mlxsw_sp_bridge_port_create(struct mlxsw_sp_bridge_device *bridge_device,
struct net_device *brport_dev)
{
struct mlxsw_sp_bridge_port *bridge_port;
struct mlxsw_sp_port *mlxsw_sp_port;
bridge_port = kzalloc(sizeof(*bridge_port), GFP_KERNEL);
if (!bridge_port)
return NULL;
mlxsw_sp_port = mlxsw_sp_port_dev_lower_find(brport_dev);
bridge_port->lagged = mlxsw_sp_port->lagged;
if (bridge_port->lagged)
bridge_port->lag_id = mlxsw_sp_port->lag_id;
else
bridge_port->system_port = mlxsw_sp_port->local_port;
bridge_port->dev = brport_dev;
bridge_port->bridge_device = bridge_device;
bridge_port->stp_state = BR_STATE_DISABLED;
bridge_port->flags = BR_LEARNING | BR_FLOOD | BR_LEARNING_SYNC |
BR_MCAST_FLOOD;
INIT_LIST_HEAD(&bridge_port->vlans_list);
list_add(&bridge_port->list, &bridge_device->ports_list);
bridge_port->ref_count = 1;
return bridge_port;
}
static void
mlxsw_sp_bridge_port_destroy(struct mlxsw_sp_bridge_port *bridge_port)
{
list_del(&bridge_port->list);
WARN_ON(!list_empty(&bridge_port->vlans_list));
kfree(bridge_port);
}
static bool
mlxsw_sp_bridge_port_should_destroy(const struct mlxsw_sp_bridge_port *
bridge_port)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(bridge_port->dev);
/* In case ports were pulled from out of a bridged LAG, then
* it's possible the reference count isn't zero, yet the bridge
* port should be destroyed, as it's no longer an upper of ours.
*/
if (!mlxsw_sp && list_empty(&bridge_port->vlans_list))
return true;
else if (bridge_port->ref_count == 0)
return true;
else
return false;
}
static struct mlxsw_sp_bridge_port *
mlxsw_sp_bridge_port_get(struct mlxsw_sp_bridge *bridge,
struct net_device *brport_dev)
{
struct net_device *br_dev = netdev_master_upper_dev_get(brport_dev);
struct mlxsw_sp_bridge_device *bridge_device;
struct mlxsw_sp_bridge_port *bridge_port;
int err;
bridge_port = mlxsw_sp_bridge_port_find(bridge, brport_dev);
if (bridge_port) {
bridge_port->ref_count++;
return bridge_port;
}
bridge_device = mlxsw_sp_bridge_device_get(bridge, br_dev);
if (IS_ERR(bridge_device))
return ERR_CAST(bridge_device);
bridge_port = mlxsw_sp_bridge_port_create(bridge_device, brport_dev);
if (!bridge_port) {
err = -ENOMEM;
goto err_bridge_port_create;
}
return bridge_port;
err_bridge_port_create:
mlxsw_sp_bridge_device_put(bridge, bridge_device);
return ERR_PTR(err);
}
static void mlxsw_sp_bridge_port_put(struct mlxsw_sp_bridge *bridge,
struct mlxsw_sp_bridge_port *bridge_port)
{
struct mlxsw_sp_bridge_device *bridge_device;
bridge_port->ref_count--;
if (!mlxsw_sp_bridge_port_should_destroy(bridge_port))
return;
bridge_device = bridge_port->bridge_device;
mlxsw_sp_bridge_port_destroy(bridge_port);
mlxsw_sp_bridge_device_put(bridge, bridge_device);
}
static struct mlxsw_sp_port_vlan *
mlxsw_sp_port_vlan_find_by_bridge(struct mlxsw_sp_port *mlxsw_sp_port,
const struct mlxsw_sp_bridge_device *
bridge_device,
u16 vid)
{
struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
list_for_each_entry(mlxsw_sp_port_vlan, &mlxsw_sp_port->vlans_list,
list) {
if (!mlxsw_sp_port_vlan->bridge_port)
continue;
if (mlxsw_sp_port_vlan->bridge_port->bridge_device !=
bridge_device)
continue;
if (bridge_device->vlan_enabled &&
mlxsw_sp_port_vlan->vid != vid)
continue;
return mlxsw_sp_port_vlan;
}
return NULL;
}
static struct mlxsw_sp_port_vlan*
mlxsw_sp_port_vlan_find_by_fid(struct mlxsw_sp_port *mlxsw_sp_port,
u16 fid_index)
{
struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
list_for_each_entry(mlxsw_sp_port_vlan, &mlxsw_sp_port->vlans_list,
list) {
struct mlxsw_sp_fid *fid = mlxsw_sp_port_vlan->fid;
if (fid && mlxsw_sp_fid_index(fid) == fid_index)
return mlxsw_sp_port_vlan;
}
return NULL;
}
static struct mlxsw_sp_bridge_vlan *
mlxsw_sp_bridge_vlan_find(const struct mlxsw_sp_bridge_port *bridge_port,
u16 vid)
{
struct mlxsw_sp_bridge_vlan *bridge_vlan;
list_for_each_entry(bridge_vlan, &bridge_port->vlans_list, list) {
if (bridge_vlan->vid == vid)
return bridge_vlan;
}
return NULL;
}
static struct mlxsw_sp_bridge_vlan *
mlxsw_sp_bridge_vlan_create(struct mlxsw_sp_bridge_port *bridge_port, u16 vid)
{
struct mlxsw_sp_bridge_vlan *bridge_vlan;
bridge_vlan = kzalloc(sizeof(*bridge_vlan), GFP_KERNEL);
if (!bridge_vlan)
return NULL;
INIT_LIST_HEAD(&bridge_vlan->port_vlan_list);
bridge_vlan->vid = vid;
list_add(&bridge_vlan->list, &bridge_port->vlans_list);
return bridge_vlan;
}
static void
mlxsw_sp_bridge_vlan_destroy(struct mlxsw_sp_bridge_vlan *bridge_vlan)
{
list_del(&bridge_vlan->list);
WARN_ON(!list_empty(&bridge_vlan->port_vlan_list));
kfree(bridge_vlan);
}
static struct mlxsw_sp_bridge_vlan *
mlxsw_sp_bridge_vlan_get(struct mlxsw_sp_bridge_port *bridge_port, u16 vid)
{
struct mlxsw_sp_bridge_vlan *bridge_vlan;
bridge_vlan = mlxsw_sp_bridge_vlan_find(bridge_port, vid);
if (bridge_vlan)
return bridge_vlan;
return mlxsw_sp_bridge_vlan_create(bridge_port, vid);
}
static void mlxsw_sp_bridge_vlan_put(struct mlxsw_sp_bridge_vlan *bridge_vlan)
{
if (list_empty(&bridge_vlan->port_vlan_list))
mlxsw_sp_bridge_vlan_destroy(bridge_vlan);
}
static void mlxsw_sp_port_bridge_flags_get(struct mlxsw_sp_bridge *bridge,
struct net_device *dev,
unsigned long *brport_flags)
{
struct mlxsw_sp_bridge_port *bridge_port;
bridge_port = mlxsw_sp_bridge_port_find(bridge, dev);
if (WARN_ON(!bridge_port))
return;
memcpy(brport_flags, &bridge_port->flags, sizeof(*brport_flags));
}
static int mlxsw_sp_port_attr_get(struct net_device *dev,
struct switchdev_attr *attr)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
switch (attr->id) {
case SWITCHDEV_ATTR_ID_PORT_PARENT_ID:
attr->u.ppid.id_len = sizeof(mlxsw_sp->base_mac);
memcpy(&attr->u.ppid.id, &mlxsw_sp->base_mac,
attr->u.ppid.id_len);
break;
case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
mlxsw_sp_port_bridge_flags_get(mlxsw_sp->bridge, attr->orig_dev,
&attr->u.brport_flags);
break;
case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS_SUPPORT:
attr->u.brport_flags_support = BR_LEARNING | BR_FLOOD |
BR_MCAST_FLOOD;
break;
default:
return -EOPNOTSUPP;
}
return 0;
}
static int
mlxsw_sp_port_bridge_vlan_stp_set(struct mlxsw_sp_port *mlxsw_sp_port,
struct mlxsw_sp_bridge_vlan *bridge_vlan,
u8 state)
{
struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
list_for_each_entry(mlxsw_sp_port_vlan, &bridge_vlan->port_vlan_list,
bridge_vlan_node) {
if (mlxsw_sp_port_vlan->mlxsw_sp_port != mlxsw_sp_port)
continue;
return mlxsw_sp_port_vid_stp_set(mlxsw_sp_port,
bridge_vlan->vid, state);
}
return 0;
}
static int mlxsw_sp_port_attr_stp_state_set(struct mlxsw_sp_port *mlxsw_sp_port,
struct switchdev_trans *trans,
struct net_device *orig_dev,
u8 state)
{
struct mlxsw_sp_bridge_port *bridge_port;
struct mlxsw_sp_bridge_vlan *bridge_vlan;
int err;
if (switchdev_trans_ph_prepare(trans))
return 0;
/* It's possible we failed to enslave the port, yet this
* operation is executed due to it being deferred.
*/
bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp_port->mlxsw_sp->bridge,
orig_dev);
if (!bridge_port)
return 0;
list_for_each_entry(bridge_vlan, &bridge_port->vlans_list, list) {
err = mlxsw_sp_port_bridge_vlan_stp_set(mlxsw_sp_port,
bridge_vlan, state);
if (err)
goto err_port_bridge_vlan_stp_set;
}
bridge_port->stp_state = state;
return 0;
err_port_bridge_vlan_stp_set:
list_for_each_entry_continue_reverse(bridge_vlan,
&bridge_port->vlans_list, list)
mlxsw_sp_port_bridge_vlan_stp_set(mlxsw_sp_port, bridge_vlan,
bridge_port->stp_state);
return err;
}
static int
mlxsw_sp_port_bridge_vlan_flood_set(struct mlxsw_sp_port *mlxsw_sp_port,
struct mlxsw_sp_bridge_vlan *bridge_vlan,
enum mlxsw_sp_flood_type packet_type,
bool member)
{
struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
list_for_each_entry(mlxsw_sp_port_vlan, &bridge_vlan->port_vlan_list,
bridge_vlan_node) {
if (mlxsw_sp_port_vlan->mlxsw_sp_port != mlxsw_sp_port)
continue;
return mlxsw_sp_fid_flood_set(mlxsw_sp_port_vlan->fid,
packet_type,
mlxsw_sp_port->local_port,
member);
}
return 0;
}
static int
mlxsw_sp_bridge_port_flood_table_set(struct mlxsw_sp_port *mlxsw_sp_port,
struct mlxsw_sp_bridge_port *bridge_port,
enum mlxsw_sp_flood_type packet_type,
bool member)
{
struct mlxsw_sp_bridge_vlan *bridge_vlan;
int err;
list_for_each_entry(bridge_vlan, &bridge_port->vlans_list, list) {
err = mlxsw_sp_port_bridge_vlan_flood_set(mlxsw_sp_port,
bridge_vlan,
packet_type,
member);
if (err)
goto err_port_bridge_vlan_flood_set;
}
return 0;
err_port_bridge_vlan_flood_set:
list_for_each_entry_continue_reverse(bridge_vlan,
&bridge_port->vlans_list, list)
mlxsw_sp_port_bridge_vlan_flood_set(mlxsw_sp_port, bridge_vlan,
packet_type, !member);
return err;
}
static int
mlxsw_sp_port_bridge_vlan_learning_set(struct mlxsw_sp_port *mlxsw_sp_port,
struct mlxsw_sp_bridge_vlan *bridge_vlan,
bool set)
{
struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
u16 vid = bridge_vlan->vid;
list_for_each_entry(mlxsw_sp_port_vlan, &bridge_vlan->port_vlan_list,
bridge_vlan_node) {
if (mlxsw_sp_port_vlan->mlxsw_sp_port != mlxsw_sp_port)
continue;
return mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, set);
}
return 0;
}
static int
mlxsw_sp_bridge_port_learning_set(struct mlxsw_sp_port *mlxsw_sp_port,
struct mlxsw_sp_bridge_port *bridge_port,
bool set)
{
struct mlxsw_sp_bridge_vlan *bridge_vlan;
int err;
list_for_each_entry(bridge_vlan, &bridge_port->vlans_list, list) {
err = mlxsw_sp_port_bridge_vlan_learning_set(mlxsw_sp_port,
bridge_vlan, set);
if (err)
goto err_port_bridge_vlan_learning_set;
}
return 0;
err_port_bridge_vlan_learning_set:
list_for_each_entry_continue_reverse(bridge_vlan,
&bridge_port->vlans_list, list)
mlxsw_sp_port_bridge_vlan_learning_set(mlxsw_sp_port,
bridge_vlan, !set);
return err;
}
static int mlxsw_sp_port_attr_br_flags_set(struct mlxsw_sp_port *mlxsw_sp_port,
struct switchdev_trans *trans,
struct net_device *orig_dev,
unsigned long brport_flags)
{
struct mlxsw_sp_bridge_port *bridge_port;
int err;
if (switchdev_trans_ph_prepare(trans))
return 0;
bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp_port->mlxsw_sp->bridge,
orig_dev);
if (!bridge_port)
return 0;
err = mlxsw_sp_bridge_port_flood_table_set(mlxsw_sp_port, bridge_port,
MLXSW_SP_FLOOD_TYPE_UC,
brport_flags & BR_FLOOD);
if (err)
return err;
err = mlxsw_sp_bridge_port_learning_set(mlxsw_sp_port, bridge_port,
brport_flags & BR_LEARNING);
if (err)
return err;
if (bridge_port->bridge_device->multicast_enabled)
goto out;
err = mlxsw_sp_bridge_port_flood_table_set(mlxsw_sp_port, bridge_port,
MLXSW_SP_FLOOD_TYPE_MC,
brport_flags &
BR_MCAST_FLOOD);
if (err)
return err;
out:
memcpy(&bridge_port->flags, &brport_flags, sizeof(brport_flags));
return 0;
}
static int mlxsw_sp_ageing_set(struct mlxsw_sp *mlxsw_sp, u32 ageing_time)
{
char sfdat_pl[MLXSW_REG_SFDAT_LEN];
int err;
mlxsw_reg_sfdat_pack(sfdat_pl, ageing_time);
err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdat), sfdat_pl);
if (err)
return err;
mlxsw_sp->bridge->ageing_time = ageing_time;
return 0;
}
static int mlxsw_sp_port_attr_br_ageing_set(struct mlxsw_sp_port *mlxsw_sp_port,
struct switchdev_trans *trans,
unsigned long ageing_clock_t)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock_t);
u32 ageing_time = jiffies_to_msecs(ageing_jiffies) / 1000;
if (switchdev_trans_ph_prepare(trans)) {
if (ageing_time < MLXSW_SP_MIN_AGEING_TIME ||
ageing_time > MLXSW_SP_MAX_AGEING_TIME)
return -ERANGE;
else
return 0;
}
return mlxsw_sp_ageing_set(mlxsw_sp, ageing_time);
}
static int mlxsw_sp_port_attr_br_vlan_set(struct mlxsw_sp_port *mlxsw_sp_port,
struct switchdev_trans *trans,
struct net_device *orig_dev,
bool vlan_enabled)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
struct mlxsw_sp_bridge_device *bridge_device;
if (!switchdev_trans_ph_prepare(trans))
return 0;
bridge_device = mlxsw_sp_bridge_device_find(mlxsw_sp->bridge, orig_dev);
if (WARN_ON(!bridge_device))
return -EINVAL;
if (bridge_device->vlan_enabled == vlan_enabled)
return 0;
netdev_err(bridge_device->dev, "VLAN filtering can't be changed for existing bridge\n");
return -EINVAL;
}
static int mlxsw_sp_port_attr_mrouter_set(struct mlxsw_sp_port *mlxsw_sp_port,
struct switchdev_trans *trans,
struct net_device *orig_dev,
bool is_port_mrouter)
{
struct mlxsw_sp_bridge_port *bridge_port;
int err;
if (switchdev_trans_ph_prepare(trans))
return 0;
bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp_port->mlxsw_sp->bridge,
orig_dev);
if (!bridge_port)
return 0;
if (!bridge_port->bridge_device->multicast_enabled)
goto out;
err = mlxsw_sp_bridge_port_flood_table_set(mlxsw_sp_port, bridge_port,
MLXSW_SP_FLOOD_TYPE_MC,
is_port_mrouter);
if (err)
return err;
mlxsw_sp_port_mrouter_update_mdb(mlxsw_sp_port, bridge_port,
is_port_mrouter);
out:
bridge_port->mrouter = is_port_mrouter;
return 0;
}
static bool mlxsw_sp_mc_flood(const struct mlxsw_sp_bridge_port *bridge_port)
{
const struct mlxsw_sp_bridge_device *bridge_device;
bridge_device = bridge_port->bridge_device;
return bridge_device->multicast_enabled ? bridge_port->mrouter :
bridge_port->flags & BR_MCAST_FLOOD;
}
static int mlxsw_sp_port_mc_disabled_set(struct mlxsw_sp_port *mlxsw_sp_port,
struct switchdev_trans *trans,
struct net_device *orig_dev,
bool mc_disabled)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
struct mlxsw_sp_bridge_device *bridge_device;
struct mlxsw_sp_bridge_port *bridge_port;
int err;
if (switchdev_trans_ph_prepare(trans))
return 0;
/* It's possible we failed to enslave the port, yet this
* operation is executed due to it being deferred.
*/
bridge_device = mlxsw_sp_bridge_device_find(mlxsw_sp->bridge, orig_dev);
if (!bridge_device)
return 0;
if (bridge_device->multicast_enabled != !mc_disabled) {
bridge_device->multicast_enabled = !mc_disabled;
mlxsw_sp_bridge_mdb_mc_enable_sync(mlxsw_sp_port,
bridge_device);
}
list_for_each_entry(bridge_port, &bridge_device->ports_list, list) {
enum mlxsw_sp_flood_type packet_type = MLXSW_SP_FLOOD_TYPE_MC;
bool member = mlxsw_sp_mc_flood(bridge_port);
err = mlxsw_sp_bridge_port_flood_table_set(mlxsw_sp_port,
bridge_port,
packet_type, member);
if (err)
return err;
}
bridge_device->multicast_enabled = !mc_disabled;
return 0;
}
static int mlxsw_sp_port_attr_set(struct net_device *dev,
const struct switchdev_attr *attr,
struct switchdev_trans *trans)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
int err;
switch (attr->id) {
case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
err = mlxsw_sp_port_attr_stp_state_set(mlxsw_sp_port, trans,
attr->orig_dev,
attr->u.stp_state);
break;
case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
err = mlxsw_sp_port_attr_br_flags_set(mlxsw_sp_port, trans,
attr->orig_dev,
attr->u.brport_flags);
break;
case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
err = mlxsw_sp_port_attr_br_ageing_set(mlxsw_sp_port, trans,
attr->u.ageing_time);
break;
case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
err = mlxsw_sp_port_attr_br_vlan_set(mlxsw_sp_port, trans,
attr->orig_dev,
attr->u.vlan_filtering);
break;
case SWITCHDEV_ATTR_ID_PORT_MROUTER:
err = mlxsw_sp_port_attr_mrouter_set(mlxsw_sp_port, trans,
attr->orig_dev,
attr->u.mrouter);
break;
case SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED:
err = mlxsw_sp_port_mc_disabled_set(mlxsw_sp_port, trans,
attr->orig_dev,
attr->u.mc_disabled);
break;
default:
err = -EOPNOTSUPP;
break;
}
return err;
}
static int
mlxsw_sp_port_vlan_fid_join(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan,
struct mlxsw_sp_bridge_port *bridge_port)
{
struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port;
struct mlxsw_sp_bridge_device *bridge_device;
u8 local_port = mlxsw_sp_port->local_port;
u16 vid = mlxsw_sp_port_vlan->vid;
struct mlxsw_sp_fid *fid;
int err;
bridge_device = bridge_port->bridge_device;
fid = bridge_device->ops->fid_get(bridge_device, vid);
if (IS_ERR(fid))
return PTR_ERR(fid);
err = mlxsw_sp_fid_flood_set(fid, MLXSW_SP_FLOOD_TYPE_UC, local_port,
bridge_port->flags & BR_FLOOD);
if (err)
goto err_fid_uc_flood_set;
err = mlxsw_sp_fid_flood_set(fid, MLXSW_SP_FLOOD_TYPE_MC, local_port,
mlxsw_sp_mc_flood(bridge_port));
if (err)
goto err_fid_mc_flood_set;
err = mlxsw_sp_fid_flood_set(fid, MLXSW_SP_FLOOD_TYPE_BC, local_port,
true);
if (err)
goto err_fid_bc_flood_set;
err = mlxsw_sp_fid_port_vid_map(fid, mlxsw_sp_port, vid);
if (err)
goto err_fid_port_vid_map;
mlxsw_sp_port_vlan->fid = fid;
return 0;
err_fid_port_vid_map:
mlxsw_sp_fid_flood_set(fid, MLXSW_SP_FLOOD_TYPE_BC, local_port, false);
err_fid_bc_flood_set:
mlxsw_sp_fid_flood_set(fid, MLXSW_SP_FLOOD_TYPE_MC, local_port, false);
err_fid_mc_flood_set:
mlxsw_sp_fid_flood_set(fid, MLXSW_SP_FLOOD_TYPE_UC, local_port, false);
err_fid_uc_flood_set:
mlxsw_sp_fid_put(fid);
return err;
}
static void
mlxsw_sp_port_vlan_fid_leave(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan)
{
struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port;
struct mlxsw_sp_fid *fid = mlxsw_sp_port_vlan->fid;
u8 local_port = mlxsw_sp_port->local_port;
u16 vid = mlxsw_sp_port_vlan->vid;
mlxsw_sp_port_vlan->fid = NULL;
mlxsw_sp_fid_port_vid_unmap(fid, mlxsw_sp_port, vid);
mlxsw_sp_fid_flood_set(fid, MLXSW_SP_FLOOD_TYPE_BC, local_port, false);
mlxsw_sp_fid_flood_set(fid, MLXSW_SP_FLOOD_TYPE_MC, local_port, false);
mlxsw_sp_fid_flood_set(fid, MLXSW_SP_FLOOD_TYPE_UC, local_port, false);
mlxsw_sp_fid_put(fid);
}
static u16
mlxsw_sp_port_pvid_determine(const struct mlxsw_sp_port *mlxsw_sp_port,
u16 vid, bool is_pvid)
{
if (is_pvid)
return vid;
else if (mlxsw_sp_port->pvid == vid)
return 0; /* Dis-allow untagged packets */
else
return mlxsw_sp_port->pvid;
}
static int
mlxsw_sp_port_vlan_bridge_join(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan,
struct mlxsw_sp_bridge_port *bridge_port)
{
struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port;
struct mlxsw_sp_bridge_vlan *bridge_vlan;
u16 vid = mlxsw_sp_port_vlan->vid;
int err;
/* No need to continue if only VLAN flags were changed */
if (mlxsw_sp_port_vlan->bridge_port)
return 0;
err = mlxsw_sp_port_vlan_fid_join(mlxsw_sp_port_vlan, bridge_port);
if (err)
return err;
err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid,
bridge_port->flags & BR_LEARNING);
if (err)
goto err_port_vid_learning_set;
err = mlxsw_sp_port_vid_stp_set(mlxsw_sp_port, vid,
bridge_port->stp_state);
if (err)
goto err_port_vid_stp_set;
bridge_vlan = mlxsw_sp_bridge_vlan_get(bridge_port, vid);
if (!bridge_vlan) {
err = -ENOMEM;
goto err_bridge_vlan_get;
}
list_add(&mlxsw_sp_port_vlan->bridge_vlan_node,
&bridge_vlan->port_vlan_list);
mlxsw_sp_bridge_port_get(mlxsw_sp_port->mlxsw_sp->bridge,
bridge_port->dev);
mlxsw_sp_port_vlan->bridge_port = bridge_port;
return 0;
err_bridge_vlan_get:
mlxsw_sp_port_vid_stp_set(mlxsw_sp_port, vid, BR_STATE_DISABLED);
err_port_vid_stp_set:
mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, false);
err_port_vid_learning_set:
mlxsw_sp_port_vlan_fid_leave(mlxsw_sp_port_vlan);
return err;
}
void
mlxsw_sp_port_vlan_bridge_leave(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan)
{
struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port;
struct mlxsw_sp_fid *fid = mlxsw_sp_port_vlan->fid;
struct mlxsw_sp_bridge_vlan *bridge_vlan;
struct mlxsw_sp_bridge_port *bridge_port;
u16 vid = mlxsw_sp_port_vlan->vid;
bool last_port, last_vlan;
if (WARN_ON(mlxsw_sp_fid_type(fid) != MLXSW_SP_FID_TYPE_8021Q &&
mlxsw_sp_fid_type(fid) != MLXSW_SP_FID_TYPE_8021D))
return;
bridge_port = mlxsw_sp_port_vlan->bridge_port;
last_vlan = list_is_singular(&bridge_port->vlans_list);
bridge_vlan = mlxsw_sp_bridge_vlan_find(bridge_port, vid);
last_port = list_is_singular(&bridge_vlan->port_vlan_list);
list_del(&mlxsw_sp_port_vlan->bridge_vlan_node);
mlxsw_sp_bridge_vlan_put(bridge_vlan);
mlxsw_sp_port_vid_stp_set(mlxsw_sp_port, vid, BR_STATE_DISABLED);
mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, false);
if (last_port)
mlxsw_sp_bridge_port_fdb_flush(mlxsw_sp_port->mlxsw_sp,
bridge_port,
mlxsw_sp_fid_index(fid));
if (last_vlan)
mlxsw_sp_bridge_port_mdb_flush(mlxsw_sp_port, bridge_port);
mlxsw_sp_port_vlan_fid_leave(mlxsw_sp_port_vlan);
mlxsw_sp_bridge_port_put(mlxsw_sp_port->mlxsw_sp->bridge, bridge_port);
mlxsw_sp_port_vlan->bridge_port = NULL;
}
static int
mlxsw_sp_bridge_port_vlan_add(struct mlxsw_sp_port *mlxsw_sp_port,
struct mlxsw_sp_bridge_port *bridge_port,
u16 vid, bool is_untagged, bool is_pvid)
{
u16 pvid = mlxsw_sp_port_pvid_determine(mlxsw_sp_port, vid, is_pvid);
struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
u16 old_pvid = mlxsw_sp_port->pvid;
int err;
mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_get(mlxsw_sp_port, vid);
if (IS_ERR(mlxsw_sp_port_vlan))
return PTR_ERR(mlxsw_sp_port_vlan);
err = mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid, true,
is_untagged);
if (err)
goto err_port_vlan_set;
err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, pvid);
if (err)
goto err_port_pvid_set;
err = mlxsw_sp_port_vlan_bridge_join(mlxsw_sp_port_vlan, bridge_port);
if (err)
goto err_port_vlan_bridge_join;
return 0;
err_port_vlan_bridge_join:
mlxsw_sp_port_pvid_set(mlxsw_sp_port, old_pvid);
err_port_pvid_set:
mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid, false, false);
err_port_vlan_set:
mlxsw_sp_port_vlan_put(mlxsw_sp_port_vlan);
return err;
}
static int mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
const struct switchdev_obj_port_vlan *vlan,
struct switchdev_trans *trans)
{
bool flag_untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
bool flag_pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
struct net_device *orig_dev = vlan->obj.orig_dev;
struct mlxsw_sp_bridge_port *bridge_port;
u16 vid;
if (switchdev_trans_ph_prepare(trans))
return 0;
bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp->bridge, orig_dev);
if (WARN_ON(!bridge_port))
return -EINVAL;
if (!bridge_port->bridge_device->vlan_enabled)
return 0;
for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
int err;
err = mlxsw_sp_bridge_port_vlan_add(mlxsw_sp_port, bridge_port,
vid, flag_untagged,
flag_pvid);
if (err)
return err;
}
return 0;
}
static enum mlxsw_reg_sfdf_flush_type mlxsw_sp_fdb_flush_type(bool lagged)
{
return lagged ? MLXSW_REG_SFDF_FLUSH_PER_LAG_AND_FID :
MLXSW_REG_SFDF_FLUSH_PER_PORT_AND_FID;
}
static int
mlxsw_sp_bridge_port_fdb_flush(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_bridge_port *bridge_port,
u16 fid_index)
{
bool lagged = bridge_port->lagged;
char sfdf_pl[MLXSW_REG_SFDF_LEN];
u16 system_port;
system_port = lagged ? bridge_port->lag_id : bridge_port->system_port;
mlxsw_reg_sfdf_pack(sfdf_pl, mlxsw_sp_fdb_flush_type(lagged));
mlxsw_reg_sfdf_fid_set(sfdf_pl, fid_index);
mlxsw_reg_sfdf_port_fid_system_port_set(sfdf_pl, system_port);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdf), sfdf_pl);
}
static enum mlxsw_reg_sfd_rec_policy mlxsw_sp_sfd_rec_policy(bool dynamic)
{
return dynamic ? MLXSW_REG_SFD_REC_POLICY_DYNAMIC_ENTRY_INGRESS :
MLXSW_REG_SFD_REC_POLICY_STATIC_ENTRY;
}
static enum mlxsw_reg_sfd_op mlxsw_sp_sfd_op(bool adding)
{
return adding ? MLXSW_REG_SFD_OP_WRITE_EDIT :
MLXSW_REG_SFD_OP_WRITE_REMOVE;
}
static int __mlxsw_sp_port_fdb_uc_op(struct mlxsw_sp *mlxsw_sp, u8 local_port,
const char *mac, u16 fid, bool adding,
enum mlxsw_reg_sfd_rec_action action,
bool dynamic)
{
char *sfd_pl;
int err;
sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
if (!sfd_pl)
return -ENOMEM;
mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0);
mlxsw_reg_sfd_uc_pack(sfd_pl, 0, mlxsw_sp_sfd_rec_policy(dynamic),
mac, fid, action, local_port);
err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
kfree(sfd_pl);
return err;
}
static int mlxsw_sp_port_fdb_uc_op(struct mlxsw_sp *mlxsw_sp, u8 local_port,
const char *mac, u16 fid, bool adding,
bool dynamic)
{
return __mlxsw_sp_port_fdb_uc_op(mlxsw_sp, local_port, mac, fid, adding,
MLXSW_REG_SFD_REC_ACTION_NOP, dynamic);
}
int mlxsw_sp_rif_fdb_op(struct mlxsw_sp *mlxsw_sp, const char *mac, u16 fid,
bool adding)
{
return __mlxsw_sp_port_fdb_uc_op(mlxsw_sp, 0, mac, fid, adding,
MLXSW_REG_SFD_REC_ACTION_FORWARD_IP_ROUTER,
false);
}
static int mlxsw_sp_port_fdb_uc_lag_op(struct mlxsw_sp *mlxsw_sp, u16 lag_id,
const char *mac, u16 fid, u16 lag_vid,
bool adding, bool dynamic)
{
char *sfd_pl;
int err;
sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
if (!sfd_pl)
return -ENOMEM;
mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0);
mlxsw_reg_sfd_uc_lag_pack(sfd_pl, 0, mlxsw_sp_sfd_rec_policy(dynamic),
mac, fid, MLXSW_REG_SFD_REC_ACTION_NOP,
lag_vid, lag_id);
err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
kfree(sfd_pl);
return err;
}
static int
mlxsw_sp_port_fdb_set(struct mlxsw_sp_port *mlxsw_sp_port,
struct switchdev_notifier_fdb_info *fdb_info, bool adding)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
struct net_device *orig_dev = fdb_info->info.dev;
struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
struct mlxsw_sp_bridge_device *bridge_device;
struct mlxsw_sp_bridge_port *bridge_port;
u16 fid_index, vid;
bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp->bridge, orig_dev);
if (!bridge_port)
return -EINVAL;
bridge_device = bridge_port->bridge_device;
mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_bridge(mlxsw_sp_port,
bridge_device,
fdb_info->vid);
if (!mlxsw_sp_port_vlan)
return 0;
fid_index = mlxsw_sp_fid_index(mlxsw_sp_port_vlan->fid);
vid = mlxsw_sp_port_vlan->vid;
if (!bridge_port->lagged)
return mlxsw_sp_port_fdb_uc_op(mlxsw_sp,
bridge_port->system_port,
fdb_info->addr, fid_index,
adding, false);
else
return mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp,
bridge_port->lag_id,
fdb_info->addr, fid_index,
vid, adding, false);
}
static int mlxsw_sp_port_mdb_op(struct mlxsw_sp *mlxsw_sp, const char *addr,
u16 fid, u16 mid_idx, bool adding)
{
char *sfd_pl;
int err;
sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
if (!sfd_pl)
return -ENOMEM;
mlxsw_reg_sfd_pack(sfd_pl, mlxsw_sp_sfd_op(adding), 0);
mlxsw_reg_sfd_mc_pack(sfd_pl, 0, addr, fid,
MLXSW_REG_SFD_REC_ACTION_NOP, mid_idx);
err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
kfree(sfd_pl);
return err;
}
static int mlxsw_sp_port_smid_full_entry(struct mlxsw_sp *mlxsw_sp, u16 mid_idx,
long *ports_bitmap)
{
char *smid_pl;
int err, i;
smid_pl = kmalloc(MLXSW_REG_SMID_LEN, GFP_KERNEL);
if (!smid_pl)
return -ENOMEM;
mlxsw_reg_smid_pack(smid_pl, mid_idx, 0, false);
for (i = 1; i < mlxsw_core_max_ports(mlxsw_sp->core); i++) {
if (mlxsw_sp->ports[i])
mlxsw_reg_smid_port_mask_set(smid_pl, i, 1);
}
for_each_set_bit(i, ports_bitmap, mlxsw_core_max_ports(mlxsw_sp->core))
mlxsw_reg_smid_port_set(smid_pl, i, 1);
err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(smid), smid_pl);
kfree(smid_pl);
return err;
}
static int mlxsw_sp_port_smid_set(struct mlxsw_sp_port *mlxsw_sp_port,
u16 mid_idx, bool add)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char *smid_pl;
int err;
smid_pl = kmalloc(MLXSW_REG_SMID_LEN, GFP_KERNEL);
if (!smid_pl)
return -ENOMEM;
mlxsw_reg_smid_pack(smid_pl, mid_idx, mlxsw_sp_port->local_port, add);
err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(smid), smid_pl);
kfree(smid_pl);
return err;
}
static struct
mlxsw_sp_mid *__mlxsw_sp_mc_get(struct mlxsw_sp_bridge_device *bridge_device,
const unsigned char *addr,
u16 fid)
{
struct mlxsw_sp_mid *mid;
list_for_each_entry(mid, &bridge_device->mids_list, list) {
if (ether_addr_equal(mid->addr, addr) && mid->fid == fid)
return mid;
}
return NULL;
}
static void
mlxsw_sp_bridge_port_get_ports_bitmap(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_bridge_port *bridge_port,
unsigned long *ports_bitmap)
{
struct mlxsw_sp_port *mlxsw_sp_port;
u64 max_lag_members, i;
int lag_id;
if (!bridge_port->lagged) {
set_bit(bridge_port->system_port, ports_bitmap);
} else {
max_lag_members = MLXSW_CORE_RES_GET(mlxsw_sp->core,
MAX_LAG_MEMBERS);
lag_id = bridge_port->lag_id;
for (i = 0; i < max_lag_members; i++) {
mlxsw_sp_port = mlxsw_sp_port_lagged_get(mlxsw_sp,
lag_id, i);
if (mlxsw_sp_port)
set_bit(mlxsw_sp_port->local_port,
ports_bitmap);
}
}
}
static void
mlxsw_sp_mc_get_mrouters_bitmap(unsigned long *flood_bitmap,
struct mlxsw_sp_bridge_device *bridge_device,
struct mlxsw_sp *mlxsw_sp)
{
struct mlxsw_sp_bridge_port *bridge_port;
list_for_each_entry(bridge_port, &bridge_device->ports_list, list) {
if (bridge_port->mrouter) {
mlxsw_sp_bridge_port_get_ports_bitmap(mlxsw_sp,
bridge_port,
flood_bitmap);
}
}
}
static bool
mlxsw_sp_mc_write_mdb_entry(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_mid *mid,
struct mlxsw_sp_bridge_device *bridge_device)
{
long *flood_bitmap;
int num_of_ports;
int alloc_size;
u16 mid_idx;
int err;
mid_idx = find_first_zero_bit(mlxsw_sp->bridge->mids_bitmap,
MLXSW_SP_MID_MAX);
if (mid_idx == MLXSW_SP_MID_MAX)
return false;
num_of_ports = mlxsw_core_max_ports(mlxsw_sp->core);
alloc_size = sizeof(long) * BITS_TO_LONGS(num_of_ports);
flood_bitmap = kzalloc(alloc_size, GFP_KERNEL);
if (!flood_bitmap)
return false;
bitmap_copy(flood_bitmap, mid->ports_in_mid, num_of_ports);
mlxsw_sp_mc_get_mrouters_bitmap(flood_bitmap, bridge_device, mlxsw_sp);
mid->mid = mid_idx;
err = mlxsw_sp_port_smid_full_entry(mlxsw_sp, mid_idx, flood_bitmap);
kfree(flood_bitmap);
if (err)
return false;
err = mlxsw_sp_port_mdb_op(mlxsw_sp, mid->addr, mid->fid, mid_idx,
true);
if (err)
return false;
set_bit(mid_idx, mlxsw_sp->bridge->mids_bitmap);
mid->in_hw = true;
return true;
}
static int mlxsw_sp_mc_remove_mdb_entry(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_mid *mid)
{
if (!mid->in_hw)
return 0;
clear_bit(mid->mid, mlxsw_sp->bridge->mids_bitmap);
mid->in_hw = false;
return mlxsw_sp_port_mdb_op(mlxsw_sp, mid->addr, mid->fid, mid->mid,
false);
}
static struct
mlxsw_sp_mid *__mlxsw_sp_mc_alloc(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_bridge_device *bridge_device,
const unsigned char *addr,
u16 fid)
{
struct mlxsw_sp_mid *mid;
size_t alloc_size;
mid = kzalloc(sizeof(*mid), GFP_KERNEL);
if (!mid)
return NULL;
alloc_size = sizeof(unsigned long) *
BITS_TO_LONGS(mlxsw_core_max_ports(mlxsw_sp->core));
mid->ports_in_mid = kzalloc(alloc_size, GFP_KERNEL);
if (!mid->ports_in_mid)
goto err_ports_in_mid_alloc;
ether_addr_copy(mid->addr, addr);
mid->fid = fid;
mid->in_hw = false;
if (!bridge_device->multicast_enabled)
goto out;
if (!mlxsw_sp_mc_write_mdb_entry(mlxsw_sp, mid, bridge_device))
goto err_write_mdb_entry;
out:
list_add_tail(&mid->list, &bridge_device->mids_list);
return mid;
err_write_mdb_entry:
kfree(mid->ports_in_mid);
err_ports_in_mid_alloc:
kfree(mid);
return NULL;
}
static int mlxsw_sp_port_remove_from_mid(struct mlxsw_sp_port *mlxsw_sp_port,
struct mlxsw_sp_mid *mid)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
int err = 0;
clear_bit(mlxsw_sp_port->local_port, mid->ports_in_mid);
if (bitmap_empty(mid->ports_in_mid,
mlxsw_core_max_ports(mlxsw_sp->core))) {
err = mlxsw_sp_mc_remove_mdb_entry(mlxsw_sp, mid);
list_del(&mid->list);
kfree(mid->ports_in_mid);
kfree(mid);
}
return err;
}
static int mlxsw_sp_port_mdb_add(struct mlxsw_sp_port *mlxsw_sp_port,
const struct switchdev_obj_port_mdb *mdb,
struct switchdev_trans *trans)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
struct net_device *orig_dev = mdb->obj.orig_dev;
struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
struct net_device *dev = mlxsw_sp_port->dev;
struct mlxsw_sp_bridge_device *bridge_device;
struct mlxsw_sp_bridge_port *bridge_port;
struct mlxsw_sp_mid *mid;
u16 fid_index;
int err = 0;
if (switchdev_trans_ph_prepare(trans))
return 0;
bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp->bridge, orig_dev);
if (!bridge_port)
return 0;
bridge_device = bridge_port->bridge_device;
mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_bridge(mlxsw_sp_port,
bridge_device,
mdb->vid);
if (!mlxsw_sp_port_vlan)
return 0;
fid_index = mlxsw_sp_fid_index(mlxsw_sp_port_vlan->fid);
mid = __mlxsw_sp_mc_get(bridge_device, mdb->addr, fid_index);
if (!mid) {
mid = __mlxsw_sp_mc_alloc(mlxsw_sp, bridge_device, mdb->addr,
fid_index);
if (!mid) {
netdev_err(dev, "Unable to allocate MC group\n");
return -ENOMEM;
}
}
set_bit(mlxsw_sp_port->local_port, mid->ports_in_mid);
if (!bridge_device->multicast_enabled)
return 0;
if (bridge_port->mrouter)
return 0;
err = mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, true);
if (err) {
netdev_err(dev, "Unable to set SMID\n");
goto err_out;
}
return 0;
err_out:
mlxsw_sp_port_remove_from_mid(mlxsw_sp_port, mid);
return err;
}
static void
mlxsw_sp_bridge_mdb_mc_enable_sync(struct mlxsw_sp_port *mlxsw_sp_port,
struct mlxsw_sp_bridge_device
*bridge_device)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
struct mlxsw_sp_mid *mid;
bool mc_enabled;
mc_enabled = bridge_device->multicast_enabled;
list_for_each_entry(mid, &bridge_device->mids_list, list) {
if (mc_enabled)
mlxsw_sp_mc_write_mdb_entry(mlxsw_sp, mid,
bridge_device);
else
mlxsw_sp_mc_remove_mdb_entry(mlxsw_sp, mid);
}
}
static void
mlxsw_sp_port_mrouter_update_mdb(struct mlxsw_sp_port *mlxsw_sp_port,
struct mlxsw_sp_bridge_port *bridge_port,
bool add)
{
struct mlxsw_sp_bridge_device *bridge_device;
struct mlxsw_sp_mid *mid;
bridge_device = bridge_port->bridge_device;
list_for_each_entry(mid, &bridge_device->mids_list, list) {
if (!test_bit(mlxsw_sp_port->local_port, mid->ports_in_mid))
mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, add);
}
}
static int mlxsw_sp_port_obj_add(struct net_device *dev,
const struct switchdev_obj *obj,
struct switchdev_trans *trans)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
int err = 0;
switch (obj->id) {
case SWITCHDEV_OBJ_ID_PORT_VLAN:
err = mlxsw_sp_port_vlans_add(mlxsw_sp_port,
SWITCHDEV_OBJ_PORT_VLAN(obj),
trans);
break;
case SWITCHDEV_OBJ_ID_PORT_MDB:
err = mlxsw_sp_port_mdb_add(mlxsw_sp_port,
SWITCHDEV_OBJ_PORT_MDB(obj),
trans);
break;
default:
err = -EOPNOTSUPP;
break;
}
return err;
}
static void
mlxsw_sp_bridge_port_vlan_del(struct mlxsw_sp_port *mlxsw_sp_port,
struct mlxsw_sp_bridge_port *bridge_port, u16 vid)
{
u16 pvid = mlxsw_sp_port->pvid == vid ? 0 : vid;
struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, vid);
if (WARN_ON(!mlxsw_sp_port_vlan))
return;
mlxsw_sp_port_vlan_bridge_leave(mlxsw_sp_port_vlan);
mlxsw_sp_port_pvid_set(mlxsw_sp_port, pvid);
mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid, false, false);
mlxsw_sp_port_vlan_put(mlxsw_sp_port_vlan);
}
static int mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
const struct switchdev_obj_port_vlan *vlan)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
struct net_device *orig_dev = vlan->obj.orig_dev;
struct mlxsw_sp_bridge_port *bridge_port;
u16 vid;
bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp->bridge, orig_dev);
if (WARN_ON(!bridge_port))
return -EINVAL;
if (!bridge_port->bridge_device->vlan_enabled)
return 0;
for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++)
mlxsw_sp_bridge_port_vlan_del(mlxsw_sp_port, bridge_port, vid);
return 0;
}
static int
__mlxsw_sp_port_mdb_del(struct mlxsw_sp_port *mlxsw_sp_port,
struct mlxsw_sp_bridge_port *bridge_port,
struct mlxsw_sp_mid *mid)
{
struct net_device *dev = mlxsw_sp_port->dev;
int err;
if (bridge_port->bridge_device->multicast_enabled) {
if (bridge_port->bridge_device->multicast_enabled) {
err = mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid,
false);
if (err)
netdev_err(dev, "Unable to remove port from SMID\n");
}
}
err = mlxsw_sp_port_remove_from_mid(mlxsw_sp_port, mid);
if (err)
netdev_err(dev, "Unable to remove MC SFD\n");
return err;
}
static int mlxsw_sp_port_mdb_del(struct mlxsw_sp_port *mlxsw_sp_port,
const struct switchdev_obj_port_mdb *mdb)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
struct net_device *orig_dev = mdb->obj.orig_dev;
struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
struct mlxsw_sp_bridge_device *bridge_device;
struct net_device *dev = mlxsw_sp_port->dev;
struct mlxsw_sp_bridge_port *bridge_port;
struct mlxsw_sp_mid *mid;
u16 fid_index;
bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp->bridge, orig_dev);
if (!bridge_port)
return 0;
bridge_device = bridge_port->bridge_device;
mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_bridge(mlxsw_sp_port,
bridge_device,
mdb->vid);
if (!mlxsw_sp_port_vlan)
return 0;
fid_index = mlxsw_sp_fid_index(mlxsw_sp_port_vlan->fid);
mid = __mlxsw_sp_mc_get(bridge_device, mdb->addr, fid_index);
if (!mid) {
netdev_err(dev, "Unable to remove port from MC DB\n");
return -EINVAL;
}
return __mlxsw_sp_port_mdb_del(mlxsw_sp_port, bridge_port, mid);
}
static void
mlxsw_sp_bridge_port_mdb_flush(struct mlxsw_sp_port *mlxsw_sp_port,
struct mlxsw_sp_bridge_port *bridge_port)
{
struct mlxsw_sp_bridge_device *bridge_device;
struct mlxsw_sp_mid *mid, *tmp;
bridge_device = bridge_port->bridge_device;
list_for_each_entry_safe(mid, tmp, &bridge_device->mids_list, list) {
if (test_bit(mlxsw_sp_port->local_port, mid->ports_in_mid)) {
__mlxsw_sp_port_mdb_del(mlxsw_sp_port, bridge_port,
mid);
} else if (bridge_device->multicast_enabled &&
bridge_port->mrouter) {
mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, false);
}
}
}
static int mlxsw_sp_port_obj_del(struct net_device *dev,
const struct switchdev_obj *obj)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
int err = 0;
switch (obj->id) {
case SWITCHDEV_OBJ_ID_PORT_VLAN:
err = mlxsw_sp_port_vlans_del(mlxsw_sp_port,
SWITCHDEV_OBJ_PORT_VLAN(obj));
break;
case SWITCHDEV_OBJ_ID_PORT_MDB:
err = mlxsw_sp_port_mdb_del(mlxsw_sp_port,
SWITCHDEV_OBJ_PORT_MDB(obj));
break;
default:
err = -EOPNOTSUPP;
break;
}
return err;
}
static struct mlxsw_sp_port *mlxsw_sp_lag_rep_port(struct mlxsw_sp *mlxsw_sp,
u16 lag_id)
{
struct mlxsw_sp_port *mlxsw_sp_port;
u64 max_lag_members;
int i;
max_lag_members = MLXSW_CORE_RES_GET(mlxsw_sp->core,
MAX_LAG_MEMBERS);
for (i = 0; i < max_lag_members; i++) {
mlxsw_sp_port = mlxsw_sp_port_lagged_get(mlxsw_sp, lag_id, i);
if (mlxsw_sp_port)
return mlxsw_sp_port;
}
return NULL;
}
static const struct switchdev_ops mlxsw_sp_port_switchdev_ops = {
.switchdev_port_attr_get = mlxsw_sp_port_attr_get,
.switchdev_port_attr_set = mlxsw_sp_port_attr_set,
.switchdev_port_obj_add = mlxsw_sp_port_obj_add,
.switchdev_port_obj_del = mlxsw_sp_port_obj_del,
};
static int
mlxsw_sp_bridge_8021q_port_join(struct mlxsw_sp_bridge_device *bridge_device,
struct mlxsw_sp_bridge_port *bridge_port,
struct mlxsw_sp_port *mlxsw_sp_port)
{
struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
if (is_vlan_dev(bridge_port->dev))
return -EINVAL;
mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, 1);
if (WARN_ON(!mlxsw_sp_port_vlan))
return -EINVAL;
/* Let VLAN-aware bridge take care of its own VLANs */
mlxsw_sp_port_vlan_put(mlxsw_sp_port_vlan);
return 0;
}
static void
mlxsw_sp_bridge_8021q_port_leave(struct mlxsw_sp_bridge_device *bridge_device,
struct mlxsw_sp_bridge_port *bridge_port,
struct mlxsw_sp_port *mlxsw_sp_port)
{
mlxsw_sp_port_vlan_get(mlxsw_sp_port, 1);
/* Make sure untagged frames are allowed to ingress */
mlxsw_sp_port_pvid_set(mlxsw_sp_port, 1);
}
static struct mlxsw_sp_fid *
mlxsw_sp_bridge_8021q_fid_get(struct mlxsw_sp_bridge_device *bridge_device,
u16 vid)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(bridge_device->dev);
return mlxsw_sp_fid_8021q_get(mlxsw_sp, vid);
}
static const struct mlxsw_sp_bridge_ops mlxsw_sp_bridge_8021q_ops = {
.port_join = mlxsw_sp_bridge_8021q_port_join,
.port_leave = mlxsw_sp_bridge_8021q_port_leave,
.fid_get = mlxsw_sp_bridge_8021q_fid_get,
};
static bool
mlxsw_sp_port_is_br_member(const struct mlxsw_sp_port *mlxsw_sp_port,
const struct net_device *br_dev)
{
struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
list_for_each_entry(mlxsw_sp_port_vlan, &mlxsw_sp_port->vlans_list,
list) {
if (mlxsw_sp_port_vlan->bridge_port &&
mlxsw_sp_port_vlan->bridge_port->bridge_device->dev ==
br_dev)
return true;
}
return false;
}
static int
mlxsw_sp_bridge_8021d_port_join(struct mlxsw_sp_bridge_device *bridge_device,
struct mlxsw_sp_bridge_port *bridge_port,
struct mlxsw_sp_port *mlxsw_sp_port)
{
struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
u16 vid;
if (!is_vlan_dev(bridge_port->dev))
return -EINVAL;
vid = vlan_dev_vlan_id(bridge_port->dev);
mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, vid);
if (WARN_ON(!mlxsw_sp_port_vlan))
return -EINVAL;
if (mlxsw_sp_port_is_br_member(mlxsw_sp_port, bridge_device->dev)) {
netdev_err(mlxsw_sp_port->dev, "Can't bridge VLAN uppers of the same port\n");
return -EINVAL;
}
/* Port is no longer usable as a router interface */
if (mlxsw_sp_port_vlan->fid)
mlxsw_sp_port_vlan_router_leave(mlxsw_sp_port_vlan);
return mlxsw_sp_port_vlan_bridge_join(mlxsw_sp_port_vlan, bridge_port);
}
static void
mlxsw_sp_bridge_8021d_port_leave(struct mlxsw_sp_bridge_device *bridge_device,
struct mlxsw_sp_bridge_port *bridge_port,
struct mlxsw_sp_port *mlxsw_sp_port)
{
struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
u16 vid = vlan_dev_vlan_id(bridge_port->dev);
mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, vid);
if (WARN_ON(!mlxsw_sp_port_vlan))
return;
mlxsw_sp_port_vlan_bridge_leave(mlxsw_sp_port_vlan);
}
static struct mlxsw_sp_fid *
mlxsw_sp_bridge_8021d_fid_get(struct mlxsw_sp_bridge_device *bridge_device,
u16 vid)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(bridge_device->dev);
return mlxsw_sp_fid_8021d_get(mlxsw_sp, bridge_device->dev->ifindex);
}
static const struct mlxsw_sp_bridge_ops mlxsw_sp_bridge_8021d_ops = {
.port_join = mlxsw_sp_bridge_8021d_port_join,
.port_leave = mlxsw_sp_bridge_8021d_port_leave,
.fid_get = mlxsw_sp_bridge_8021d_fid_get,
};
int mlxsw_sp_port_bridge_join(struct mlxsw_sp_port *mlxsw_sp_port,
struct net_device *brport_dev,
struct net_device *br_dev)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
struct mlxsw_sp_bridge_device *bridge_device;
struct mlxsw_sp_bridge_port *bridge_port;
int err;
bridge_port = mlxsw_sp_bridge_port_get(mlxsw_sp->bridge, brport_dev);
if (IS_ERR(bridge_port))
return PTR_ERR(bridge_port);
bridge_device = bridge_port->bridge_device;
err = bridge_device->ops->port_join(bridge_device, bridge_port,
mlxsw_sp_port);
if (err)
goto err_port_join;
return 0;
err_port_join:
mlxsw_sp_bridge_port_put(mlxsw_sp->bridge, bridge_port);
return err;
}
void mlxsw_sp_port_bridge_leave(struct mlxsw_sp_port *mlxsw_sp_port,
struct net_device *brport_dev,
struct net_device *br_dev)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
struct mlxsw_sp_bridge_device *bridge_device;
struct mlxsw_sp_bridge_port *bridge_port;
bridge_device = mlxsw_sp_bridge_device_find(mlxsw_sp->bridge, br_dev);
if (!bridge_device)
return;
bridge_port = __mlxsw_sp_bridge_port_find(bridge_device, brport_dev);
if (!bridge_port)
return;
bridge_device->ops->port_leave(bridge_device, bridge_port,
mlxsw_sp_port);
mlxsw_sp_bridge_port_put(mlxsw_sp->bridge, bridge_port);
}
static void
mlxsw_sp_fdb_call_notifiers(enum switchdev_notifier_type type,
const char *mac, u16 vid,
struct net_device *dev)
{
struct switchdev_notifier_fdb_info info;
info.addr = mac;
info.vid = vid;
call_switchdev_notifiers(type, dev, &info.info);
}
static void mlxsw_sp_fdb_notify_mac_process(struct mlxsw_sp *mlxsw_sp,
char *sfn_pl, int rec_index,
bool adding)
{
struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
struct mlxsw_sp_bridge_device *bridge_device;
struct mlxsw_sp_bridge_port *bridge_port;
struct mlxsw_sp_port *mlxsw_sp_port;
enum switchdev_notifier_type type;
char mac[ETH_ALEN];
u8 local_port;
u16 vid, fid;
bool do_notification = true;
int err;
mlxsw_reg_sfn_mac_unpack(sfn_pl, rec_index, mac, &fid, &local_port);
mlxsw_sp_port = mlxsw_sp->ports[local_port];
if (!mlxsw_sp_port) {
dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Incorrect local port in FDB notification\n");
goto just_remove;
}
mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_fid(mlxsw_sp_port, fid);
if (!mlxsw_sp_port_vlan) {
netdev_err(mlxsw_sp_port->dev, "Failed to find a matching {Port, VID} following FDB notification\n");
goto just_remove;
}
bridge_port = mlxsw_sp_port_vlan->bridge_port;
if (!bridge_port) {
netdev_err(mlxsw_sp_port->dev, "{Port, VID} not associated with a bridge\n");
goto just_remove;
}
bridge_device = bridge_port->bridge_device;
vid = bridge_device->vlan_enabled ? mlxsw_sp_port_vlan->vid : 0;
do_fdb_op:
err = mlxsw_sp_port_fdb_uc_op(mlxsw_sp, local_port, mac, fid,
adding, true);
if (err) {
dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to set FDB entry\n");
return;
}
if (!do_notification)
return;
type = adding ? SWITCHDEV_FDB_ADD_TO_BRIDGE : SWITCHDEV_FDB_DEL_TO_BRIDGE;
mlxsw_sp_fdb_call_notifiers(type, mac, vid, bridge_port->dev);
return;
just_remove:
adding = false;
do_notification = false;
goto do_fdb_op;
}
static void mlxsw_sp_fdb_notify_mac_lag_process(struct mlxsw_sp *mlxsw_sp,
char *sfn_pl, int rec_index,
bool adding)
{
struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
struct mlxsw_sp_bridge_device *bridge_device;
struct mlxsw_sp_bridge_port *bridge_port;
struct mlxsw_sp_port *mlxsw_sp_port;
enum switchdev_notifier_type type;
char mac[ETH_ALEN];
u16 lag_vid = 0;
u16 lag_id;
u16 vid, fid;
bool do_notification = true;
int err;
mlxsw_reg_sfn_mac_lag_unpack(sfn_pl, rec_index, mac, &fid, &lag_id);
mlxsw_sp_port = mlxsw_sp_lag_rep_port(mlxsw_sp, lag_id);
if (!mlxsw_sp_port) {
dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Cannot find port representor for LAG\n");
goto just_remove;
}
mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_fid(mlxsw_sp_port, fid);
if (!mlxsw_sp_port_vlan) {
netdev_err(mlxsw_sp_port->dev, "Failed to find a matching {Port, VID} following FDB notification\n");
goto just_remove;
}
bridge_port = mlxsw_sp_port_vlan->bridge_port;
if (!bridge_port) {
netdev_err(mlxsw_sp_port->dev, "{Port, VID} not associated with a bridge\n");
goto just_remove;
}
bridge_device = bridge_port->bridge_device;
vid = bridge_device->vlan_enabled ? mlxsw_sp_port_vlan->vid : 0;
lag_vid = mlxsw_sp_port_vlan->vid;
do_fdb_op:
err = mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp, lag_id, mac, fid, lag_vid,
adding, true);
if (err) {
dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to set FDB entry\n");
return;
}
if (!do_notification)
return;
type = adding ? SWITCHDEV_FDB_ADD_TO_BRIDGE : SWITCHDEV_FDB_DEL_TO_BRIDGE;
mlxsw_sp_fdb_call_notifiers(type, mac, vid, bridge_port->dev);
return;
just_remove:
adding = false;
do_notification = false;
goto do_fdb_op;
}
static void mlxsw_sp_fdb_notify_rec_process(struct mlxsw_sp *mlxsw_sp,
char *sfn_pl, int rec_index)
{
switch (mlxsw_reg_sfn_rec_type_get(sfn_pl, rec_index)) {
case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC:
mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl,
rec_index, true);
break;
case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC:
mlxsw_sp_fdb_notify_mac_process(mlxsw_sp, sfn_pl,
rec_index, false);
break;
case MLXSW_REG_SFN_REC_TYPE_LEARNED_MAC_LAG:
mlxsw_sp_fdb_notify_mac_lag_process(mlxsw_sp, sfn_pl,
rec_index, true);
break;
case MLXSW_REG_SFN_REC_TYPE_AGED_OUT_MAC_LAG:
mlxsw_sp_fdb_notify_mac_lag_process(mlxsw_sp, sfn_pl,
rec_index, false);
break;
}
}
static void mlxsw_sp_fdb_notify_work_schedule(struct mlxsw_sp *mlxsw_sp)
{
struct mlxsw_sp_bridge *bridge = mlxsw_sp->bridge;
mlxsw_core_schedule_dw(&bridge->fdb_notify.dw,
msecs_to_jiffies(bridge->fdb_notify.interval));
}
static void mlxsw_sp_fdb_notify_work(struct work_struct *work)
{
struct mlxsw_sp_bridge *bridge;
struct mlxsw_sp *mlxsw_sp;
char *sfn_pl;
u8 num_rec;
int i;
int err;
sfn_pl = kmalloc(MLXSW_REG_SFN_LEN, GFP_KERNEL);
if (!sfn_pl)
return;
bridge = container_of(work, struct mlxsw_sp_bridge, fdb_notify.dw.work);
mlxsw_sp = bridge->mlxsw_sp;
rtnl_lock();
mlxsw_reg_sfn_pack(sfn_pl);
err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(sfn), sfn_pl);
if (err) {
dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to get FDB notifications\n");
goto out;
}
num_rec = mlxsw_reg_sfn_num_rec_get(sfn_pl);
for (i = 0; i < num_rec; i++)
mlxsw_sp_fdb_notify_rec_process(mlxsw_sp, sfn_pl, i);
out:
rtnl_unlock();
kfree(sfn_pl);
mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp);
}
struct mlxsw_sp_switchdev_event_work {
struct work_struct work;
struct switchdev_notifier_fdb_info fdb_info;
struct net_device *dev;
unsigned long event;
};
static void mlxsw_sp_switchdev_event_work(struct work_struct *work)
{
struct mlxsw_sp_switchdev_event_work *switchdev_work =
container_of(work, struct mlxsw_sp_switchdev_event_work, work);
struct net_device *dev = switchdev_work->dev;
struct switchdev_notifier_fdb_info *fdb_info;
struct mlxsw_sp_port *mlxsw_sp_port;
int err;
rtnl_lock();
mlxsw_sp_port = mlxsw_sp_port_dev_lower_find(dev);
if (!mlxsw_sp_port)
goto out;
switch (switchdev_work->event) {
case SWITCHDEV_FDB_ADD_TO_DEVICE:
fdb_info = &switchdev_work->fdb_info;
err = mlxsw_sp_port_fdb_set(mlxsw_sp_port, fdb_info, true);
if (err)
break;
mlxsw_sp_fdb_call_notifiers(SWITCHDEV_FDB_OFFLOADED,
fdb_info->addr,
fdb_info->vid, dev);
break;
case SWITCHDEV_FDB_DEL_TO_DEVICE:
fdb_info = &switchdev_work->fdb_info;
mlxsw_sp_port_fdb_set(mlxsw_sp_port, fdb_info, false);
break;
}
out:
rtnl_unlock();
kfree(switchdev_work->fdb_info.addr);
kfree(switchdev_work);
dev_put(dev);
}
/* Called under rcu_read_lock() */
static int mlxsw_sp_switchdev_event(struct notifier_block *unused,
unsigned long event, void *ptr)
{
struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
struct mlxsw_sp_switchdev_event_work *switchdev_work;
struct switchdev_notifier_fdb_info *fdb_info = ptr;
if (!mlxsw_sp_port_dev_lower_find_rcu(dev))
return NOTIFY_DONE;
switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC);
if (!switchdev_work)
return NOTIFY_BAD;
INIT_WORK(&switchdev_work->work, mlxsw_sp_switchdev_event_work);
switchdev_work->dev = dev;
switchdev_work->event = event;
switch (event) {
case SWITCHDEV_FDB_ADD_TO_DEVICE: /* fall through */
case SWITCHDEV_FDB_DEL_TO_DEVICE:
memcpy(&switchdev_work->fdb_info, ptr,
sizeof(switchdev_work->fdb_info));
switchdev_work->fdb_info.addr = kzalloc(ETH_ALEN, GFP_ATOMIC);
if (!switchdev_work->fdb_info.addr)
goto err_addr_alloc;
ether_addr_copy((u8 *)switchdev_work->fdb_info.addr,
fdb_info->addr);
/* Take a reference on the device. This can be either
* upper device containig mlxsw_sp_port or just a
* mlxsw_sp_port
*/
dev_hold(dev);
break;
default:
kfree(switchdev_work);
return NOTIFY_DONE;
}
mlxsw_core_schedule_work(&switchdev_work->work);
return NOTIFY_DONE;
err_addr_alloc:
kfree(switchdev_work);
return NOTIFY_BAD;
}
static struct notifier_block mlxsw_sp_switchdev_notifier = {
.notifier_call = mlxsw_sp_switchdev_event,
};
static int mlxsw_sp_fdb_init(struct mlxsw_sp *mlxsw_sp)
{
struct mlxsw_sp_bridge *bridge = mlxsw_sp->bridge;
int err;
err = mlxsw_sp_ageing_set(mlxsw_sp, MLXSW_SP_DEFAULT_AGEING_TIME);
if (err) {
dev_err(mlxsw_sp->bus_info->dev, "Failed to set default ageing time\n");
return err;
}
err = register_switchdev_notifier(&mlxsw_sp_switchdev_notifier);
if (err) {
dev_err(mlxsw_sp->bus_info->dev, "Failed to register switchdev notifier\n");
return err;
}
INIT_DELAYED_WORK(&bridge->fdb_notify.dw, mlxsw_sp_fdb_notify_work);
bridge->fdb_notify.interval = MLXSW_SP_DEFAULT_LEARNING_INTERVAL;
mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp);
return 0;
}
static void mlxsw_sp_fdb_fini(struct mlxsw_sp *mlxsw_sp)
{
cancel_delayed_work_sync(&mlxsw_sp->bridge->fdb_notify.dw);
unregister_switchdev_notifier(&mlxsw_sp_switchdev_notifier);
}
int mlxsw_sp_switchdev_init(struct mlxsw_sp *mlxsw_sp)
{
struct mlxsw_sp_bridge *bridge;
bridge = kzalloc(sizeof(*mlxsw_sp->bridge), GFP_KERNEL);
if (!bridge)
return -ENOMEM;
mlxsw_sp->bridge = bridge;
bridge->mlxsw_sp = mlxsw_sp;
INIT_LIST_HEAD(&mlxsw_sp->bridge->bridges_list);
bridge->bridge_8021q_ops = &mlxsw_sp_bridge_8021q_ops;
bridge->bridge_8021d_ops = &mlxsw_sp_bridge_8021d_ops;
return mlxsw_sp_fdb_init(mlxsw_sp);
}
void mlxsw_sp_switchdev_fini(struct mlxsw_sp *mlxsw_sp)
{
mlxsw_sp_fdb_fini(mlxsw_sp);
WARN_ON(!list_empty(&mlxsw_sp->bridge->bridges_list));
kfree(mlxsw_sp->bridge);
}
void mlxsw_sp_port_switchdev_init(struct mlxsw_sp_port *mlxsw_sp_port)
{
mlxsw_sp_port->dev->switchdev_ops = &mlxsw_sp_port_switchdev_ops;
}
void mlxsw_sp_port_switchdev_fini(struct mlxsw_sp_port *mlxsw_sp_port)
{
}
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