linux_dsm_epyc7002/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
Ido Schimmel 4f2c6ae5c6 switchdev: Require RTNL mutex to be held when sending FDB notifications
When switchdev drivers process FDB notifications from the underlying
device they resolve the netdev to which the entry points to and notify
the bridge using the switchdev notifier.

However, since the RTNL mutex is not held there is nothing preventing
the netdev from disappearing in the middle, which will cause
br_switchdev_event() to dereference a non-existing netdev.

Make switchdev drivers hold the lock at the beginning of the
notification processing session and release it once it ends, after
notifying the bridge.

Also, remove switchdev_mutex and fdb_lock, as they are no longer needed
when RTNL mutex is held.

Fixes: 03bf0c2812 ("switchdev: introduce switchdev notifier")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-28 16:21:31 -08:00

1487 lines
39 KiB
C

/*
* 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"
static u16 mlxsw_sp_port_vid_to_fid_get(struct mlxsw_sp_port *mlxsw_sp_port,
u16 vid)
{
u16 fid = vid;
if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
u16 vfid = mlxsw_sp_vport_vfid_get(mlxsw_sp_port);
fid = mlxsw_sp_vfid_to_fid(vfid);
}
if (!fid)
fid = mlxsw_sp_port->pvid;
return fid;
}
static struct mlxsw_sp_port *
mlxsw_sp_port_orig_get(struct net_device *dev,
struct mlxsw_sp_port *mlxsw_sp_port)
{
struct mlxsw_sp_port *mlxsw_sp_vport;
u16 vid;
if (!is_vlan_dev(dev))
return mlxsw_sp_port;
vid = vlan_dev_vlan_id(dev);
mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid);
WARN_ON(!mlxsw_sp_vport);
return mlxsw_sp_vport;
}
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;
mlxsw_sp_port = mlxsw_sp_port_orig_get(attr->orig_dev, mlxsw_sp_port);
if (!mlxsw_sp_port)
return -EINVAL;
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:
attr->u.brport_flags =
(mlxsw_sp_port->learning ? BR_LEARNING : 0) |
(mlxsw_sp_port->learning_sync ? BR_LEARNING_SYNC : 0) |
(mlxsw_sp_port->uc_flood ? BR_FLOOD : 0);
break;
default:
return -EOPNOTSUPP;
}
return 0;
}
static int mlxsw_sp_port_stp_state_set(struct mlxsw_sp_port *mlxsw_sp_port,
u8 state)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
enum mlxsw_reg_spms_state spms_state;
char *spms_pl;
u16 vid;
int err;
switch (state) {
case BR_STATE_FORWARDING:
spms_state = MLXSW_REG_SPMS_STATE_FORWARDING;
break;
case BR_STATE_LEARNING:
spms_state = MLXSW_REG_SPMS_STATE_LEARNING;
break;
case BR_STATE_LISTENING: /* fall-through */
case BR_STATE_DISABLED: /* fall-through */
case BR_STATE_BLOCKING:
spms_state = MLXSW_REG_SPMS_STATE_DISCARDING;
break;
default:
BUG();
}
spms_pl = kmalloc(MLXSW_REG_SPMS_LEN, GFP_KERNEL);
if (!spms_pl)
return -ENOMEM;
mlxsw_reg_spms_pack(spms_pl, mlxsw_sp_port->local_port);
if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
vid = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
mlxsw_reg_spms_vid_pack(spms_pl, vid, spms_state);
} else {
for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID)
mlxsw_reg_spms_vid_pack(spms_pl, vid, spms_state);
}
err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spms), spms_pl);
kfree(spms_pl);
return err;
}
static int mlxsw_sp_port_attr_stp_state_set(struct mlxsw_sp_port *mlxsw_sp_port,
struct switchdev_trans *trans,
u8 state)
{
if (switchdev_trans_ph_prepare(trans))
return 0;
mlxsw_sp_port->stp_state = state;
return mlxsw_sp_port_stp_state_set(mlxsw_sp_port, state);
}
static bool mlxsw_sp_vfid_is_vport_br(u16 vfid)
{
return vfid >= MLXSW_SP_VFID_PORT_MAX;
}
static int __mlxsw_sp_port_flood_set(struct mlxsw_sp_port *mlxsw_sp_port,
u16 idx_begin, u16 idx_end, bool set,
bool only_uc)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
u16 local_port = mlxsw_sp_port->local_port;
enum mlxsw_flood_table_type table_type;
u16 range = idx_end - idx_begin + 1;
char *sftr_pl;
int err;
if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID;
if (mlxsw_sp_vfid_is_vport_br(idx_begin))
local_port = mlxsw_sp_port->local_port;
else
local_port = MLXSW_PORT_CPU_PORT;
} else {
table_type = MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST;
}
sftr_pl = kmalloc(MLXSW_REG_SFTR_LEN, GFP_KERNEL);
if (!sftr_pl)
return -ENOMEM;
mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_UC, idx_begin,
table_type, range, local_port, set);
err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl);
if (err)
goto buffer_out;
/* Flooding control allows one to decide whether a given port will
* flood unicast traffic for which there is no FDB entry.
*/
if (only_uc)
goto buffer_out;
mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_BM, idx_begin,
table_type, range, local_port, set);
err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl);
buffer_out:
kfree(sftr_pl);
return err;
}
static int mlxsw_sp_port_uc_flood_set(struct mlxsw_sp_port *mlxsw_sp_port,
bool set)
{
struct net_device *dev = mlxsw_sp_port->dev;
u16 vid, last_visited_vid;
int err;
if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
u16 vfid = mlxsw_sp_vport_vfid_get(mlxsw_sp_port);
return __mlxsw_sp_port_flood_set(mlxsw_sp_port, vfid, vfid,
set, true);
}
for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid, vid, set,
true);
if (err) {
last_visited_vid = vid;
goto err_port_flood_set;
}
}
return 0;
err_port_flood_set:
for_each_set_bit(vid, mlxsw_sp_port->active_vlans, last_visited_vid)
__mlxsw_sp_port_flood_set(mlxsw_sp_port, vid, vid, !set, true);
netdev_err(dev, "Failed to configure unicast flooding\n");
return err;
}
int mlxsw_sp_vport_flood_set(struct mlxsw_sp_port *mlxsw_sp_vport, u16 vfid,
bool set, bool only_uc)
{
/* In case of vFIDs, index into the flooding table is relative to
* the start of the vFIDs range.
*/
return __mlxsw_sp_port_flood_set(mlxsw_sp_vport, vfid, vfid, set,
only_uc);
}
static int mlxsw_sp_port_attr_br_flags_set(struct mlxsw_sp_port *mlxsw_sp_port,
struct switchdev_trans *trans,
unsigned long brport_flags)
{
unsigned long uc_flood = mlxsw_sp_port->uc_flood ? BR_FLOOD : 0;
bool set;
int err;
if (!mlxsw_sp_port->bridged)
return -EINVAL;
if (switchdev_trans_ph_prepare(trans))
return 0;
if ((uc_flood ^ brport_flags) & BR_FLOOD) {
set = mlxsw_sp_port->uc_flood ? false : true;
err = mlxsw_sp_port_uc_flood_set(mlxsw_sp_port, set);
if (err)
return err;
}
mlxsw_sp_port->uc_flood = brport_flags & BR_FLOOD ? 1 : 0;
mlxsw_sp_port->learning = brport_flags & BR_LEARNING ? 1 : 0;
mlxsw_sp_port->learning_sync = brport_flags & BR_LEARNING_SYNC ? 1 : 0;
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->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))
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;
/* SWITCHDEV_TRANS_PREPARE phase */
if ((!vlan_enabled) && (mlxsw_sp->master_bridge.dev == orig_dev)) {
netdev_err(mlxsw_sp_port->dev, "Bridge must be vlan-aware\n");
return -EINVAL;
}
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 = 0;
mlxsw_sp_port = mlxsw_sp_port_orig_get(attr->orig_dev, mlxsw_sp_port);
if (!mlxsw_sp_port)
return -EINVAL;
switch (attr->id) {
case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
err = mlxsw_sp_port_attr_stp_state_set(mlxsw_sp_port, trans,
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->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;
default:
err = -EOPNOTSUPP;
break;
}
return err;
}
static int mlxsw_sp_port_pvid_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char spvid_pl[MLXSW_REG_SPVID_LEN];
mlxsw_reg_spvid_pack(spvid_pl, mlxsw_sp_port->local_port, vid);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(spvid), spvid_pl);
}
static int mlxsw_sp_fid_create(struct mlxsw_sp *mlxsw_sp, u16 fid)
{
char sfmr_pl[MLXSW_REG_SFMR_LEN];
int err;
mlxsw_reg_sfmr_pack(sfmr_pl, MLXSW_REG_SFMR_OP_CREATE_FID, fid, fid);
err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
if (err)
return err;
set_bit(fid, mlxsw_sp->active_fids);
return 0;
}
static void mlxsw_sp_fid_destroy(struct mlxsw_sp *mlxsw_sp, u16 fid)
{
char sfmr_pl[MLXSW_REG_SFMR_LEN];
clear_bit(fid, mlxsw_sp->active_fids);
mlxsw_reg_sfmr_pack(sfmr_pl, MLXSW_REG_SFMR_OP_DESTROY_FID,
fid, fid);
mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfmr), sfmr_pl);
}
static int mlxsw_sp_port_fid_map(struct mlxsw_sp_port *mlxsw_sp_port, u16 fid)
{
enum mlxsw_reg_svfa_mt mt;
if (!list_empty(&mlxsw_sp_port->vports_list))
mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
else
mt = MLXSW_REG_SVFA_MT_VID_TO_FID;
return mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, true, fid, fid);
}
static int mlxsw_sp_port_fid_unmap(struct mlxsw_sp_port *mlxsw_sp_port, u16 fid)
{
enum mlxsw_reg_svfa_mt mt;
if (list_empty(&mlxsw_sp_port->vports_list))
return 0;
mt = MLXSW_REG_SVFA_MT_PORT_VID_TO_FID;
return mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt, false, fid, fid);
}
static int mlxsw_sp_port_add_vids(struct net_device *dev, u16 vid_begin,
u16 vid_end)
{
u16 vid;
int err;
for (vid = vid_begin; vid <= vid_end; vid++) {
err = mlxsw_sp_port_add_vid(dev, 0, vid);
if (err)
goto err_port_add_vid;
}
return 0;
err_port_add_vid:
for (vid--; vid >= vid_begin; vid--)
mlxsw_sp_port_kill_vid(dev, 0, vid);
return err;
}
static int __mlxsw_sp_port_vlans_set(struct mlxsw_sp_port *mlxsw_sp_port,
u16 vid_begin, u16 vid_end, bool is_member,
bool untagged)
{
u16 vid, vid_e;
int err;
for (vid = vid_begin; vid <= vid_end;
vid += MLXSW_REG_SPVM_REC_MAX_COUNT) {
vid_e = min((u16) (vid + MLXSW_REG_SPVM_REC_MAX_COUNT - 1),
vid_end);
err = mlxsw_sp_port_vlan_set(mlxsw_sp_port, vid, vid_e,
is_member, untagged);
if (err)
return err;
}
return 0;
}
static int __mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
u16 vid_begin, u16 vid_end,
bool flag_untagged, bool flag_pvid)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
struct net_device *dev = mlxsw_sp_port->dev;
u16 vid, last_visited_vid, old_pvid;
enum mlxsw_reg_svfa_mt mt;
int err;
/* In case this is invoked with BRIDGE_FLAGS_SELF and port is
* not bridged, then packets ingressing through the port with
* the specified VIDs will be directed to CPU.
*/
if (!mlxsw_sp_port->bridged)
return mlxsw_sp_port_add_vids(dev, vid_begin, vid_end);
for (vid = vid_begin; vid <= vid_end; vid++) {
if (!test_bit(vid, mlxsw_sp->active_fids)) {
err = mlxsw_sp_fid_create(mlxsw_sp, vid);
if (err) {
netdev_err(dev, "Failed to create FID=%d\n",
vid);
return err;
}
/* When creating a FID, we set a VID to FID mapping
* regardless of the port's mode.
*/
mt = MLXSW_REG_SVFA_MT_VID_TO_FID;
err = mlxsw_sp_port_vid_to_fid_set(mlxsw_sp_port, mt,
true, vid, vid);
if (err) {
netdev_err(dev, "Failed to create FID=VID=%d mapping\n",
vid);
goto err_port_vid_to_fid_set;
}
}
}
/* Set FID mapping according to port's mode */
for (vid = vid_begin; vid <= vid_end; vid++) {
err = mlxsw_sp_port_fid_map(mlxsw_sp_port, vid);
if (err) {
netdev_err(dev, "Failed to map FID=%d", vid);
last_visited_vid = --vid;
goto err_port_fid_map;
}
}
err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid_begin, vid_end,
true, false);
if (err) {
netdev_err(dev, "Failed to configure flooding\n");
goto err_port_flood_set;
}
err = __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end,
true, flag_untagged);
if (err) {
netdev_err(dev, "Unable to add VIDs %d-%d\n", vid_begin,
vid_end);
goto err_port_vlans_set;
}
old_pvid = mlxsw_sp_port->pvid;
if (flag_pvid && old_pvid != vid_begin) {
err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, vid_begin);
if (err) {
netdev_err(dev, "Unable to add PVID %d\n", vid_begin);
goto err_port_pvid_set;
}
mlxsw_sp_port->pvid = vid_begin;
}
/* Changing activity bits only if HW operation succeded */
for (vid = vid_begin; vid <= vid_end; vid++) {
set_bit(vid, mlxsw_sp_port->active_vlans);
if (flag_untagged)
set_bit(vid, mlxsw_sp_port->untagged_vlans);
else
clear_bit(vid, mlxsw_sp_port->untagged_vlans);
}
/* STP state change must be done after we set active VLANs */
err = mlxsw_sp_port_stp_state_set(mlxsw_sp_port,
mlxsw_sp_port->stp_state);
if (err) {
netdev_err(dev, "Failed to set STP state\n");
goto err_port_stp_state_set;
}
return 0;
err_port_vid_to_fid_set:
mlxsw_sp_fid_destroy(mlxsw_sp, vid);
return err;
err_port_stp_state_set:
for (vid = vid_begin; vid <= vid_end; vid++)
clear_bit(vid, mlxsw_sp_port->active_vlans);
if (old_pvid != mlxsw_sp_port->pvid)
mlxsw_sp_port_pvid_set(mlxsw_sp_port, old_pvid);
err_port_pvid_set:
__mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end, false,
false);
err_port_vlans_set:
__mlxsw_sp_port_flood_set(mlxsw_sp_port, vid_begin, vid_end, false,
false);
err_port_flood_set:
last_visited_vid = vid_end;
err_port_fid_map:
for (vid = last_visited_vid; vid >= vid_begin; vid--)
mlxsw_sp_port_fid_unmap(mlxsw_sp_port, vid);
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;
if (switchdev_trans_ph_prepare(trans))
return 0;
return __mlxsw_sp_port_vlans_add(mlxsw_sp_port,
vlan->vid_begin, vlan->vid_end,
flag_untagged, flag_pvid);
}
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,
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, MLXSW_REG_SFD_REC_ACTION_NOP,
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_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_static_add(struct mlxsw_sp_port *mlxsw_sp_port,
const struct switchdev_obj_port_fdb *fdb,
struct switchdev_trans *trans)
{
u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, fdb->vid);
u16 lag_vid = 0;
if (switchdev_trans_ph_prepare(trans))
return 0;
if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
lag_vid = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
}
if (!mlxsw_sp_port->lagged)
return mlxsw_sp_port_fdb_uc_op(mlxsw_sp_port->mlxsw_sp,
mlxsw_sp_port->local_port,
fdb->addr, fid, true, false);
else
return mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp_port->mlxsw_sp,
mlxsw_sp_port->lag_id,
fdb->addr, fid, lag_vid,
true, false);
}
static int mlxsw_sp_port_mdb_op(struct mlxsw_sp *mlxsw_sp, const char *addr,
u16 fid, u16 mid, 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);
err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
kfree(sfd_pl);
return err;
}
static int mlxsw_sp_port_smid_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 mid,
bool add, bool clear_all_ports)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
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, mlxsw_sp_port->local_port, add);
if (clear_all_ports) {
for (i = 1; i < MLXSW_PORT_MAX_PORTS; i++)
if (mlxsw_sp->ports[i])
mlxsw_reg_smid_port_mask_set(smid_pl, i, 1);
}
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 *mlxsw_sp,
const unsigned char *addr,
u16 vid)
{
struct mlxsw_sp_mid *mid;
list_for_each_entry(mid, &mlxsw_sp->br_mids.list, list) {
if (ether_addr_equal(mid->addr, addr) && mid->vid == vid)
return mid;
}
return NULL;
}
static struct mlxsw_sp_mid *__mlxsw_sp_mc_alloc(struct mlxsw_sp *mlxsw_sp,
const unsigned char *addr,
u16 vid)
{
struct mlxsw_sp_mid *mid;
u16 mid_idx;
mid_idx = find_first_zero_bit(mlxsw_sp->br_mids.mapped,
MLXSW_SP_MID_MAX);
if (mid_idx == MLXSW_SP_MID_MAX)
return NULL;
mid = kzalloc(sizeof(*mid), GFP_KERNEL);
if (!mid)
return NULL;
set_bit(mid_idx, mlxsw_sp->br_mids.mapped);
ether_addr_copy(mid->addr, addr);
mid->vid = vid;
mid->mid = mid_idx;
mid->ref_count = 0;
list_add_tail(&mid->list, &mlxsw_sp->br_mids.list);
return mid;
}
static int __mlxsw_sp_mc_dec_ref(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_mid *mid)
{
if (--mid->ref_count == 0) {
list_del(&mid->list);
clear_bit(mid->mid, mlxsw_sp->br_mids.mapped);
kfree(mid);
return 1;
}
return 0;
}
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 *dev = mlxsw_sp_port->dev;
struct mlxsw_sp_mid *mid;
u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, mdb->vid);
int err = 0;
if (switchdev_trans_ph_prepare(trans))
return 0;
mid = __mlxsw_sp_mc_get(mlxsw_sp, mdb->addr, mdb->vid);
if (!mid) {
mid = __mlxsw_sp_mc_alloc(mlxsw_sp, mdb->addr, mdb->vid);
if (!mid) {
netdev_err(dev, "Unable to allocate MC group\n");
return -ENOMEM;
}
}
mid->ref_count++;
err = mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, true,
mid->ref_count == 1);
if (err) {
netdev_err(dev, "Unable to set SMID\n");
goto err_out;
}
if (mid->ref_count == 1) {
err = mlxsw_sp_port_mdb_op(mlxsw_sp, mdb->addr, fid, mid->mid,
true);
if (err) {
netdev_err(dev, "Unable to set MC SFD\n");
goto err_out;
}
}
return 0;
err_out:
__mlxsw_sp_mc_dec_ref(mlxsw_sp, mid);
return err;
}
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;
mlxsw_sp_port = mlxsw_sp_port_orig_get(obj->orig_dev, mlxsw_sp_port);
if (!mlxsw_sp_port)
return -EINVAL;
switch (obj->id) {
case SWITCHDEV_OBJ_ID_PORT_VLAN:
if (mlxsw_sp_port_is_vport(mlxsw_sp_port))
return 0;
err = mlxsw_sp_port_vlans_add(mlxsw_sp_port,
SWITCHDEV_OBJ_PORT_VLAN(obj),
trans);
break;
case SWITCHDEV_OBJ_ID_PORT_FDB:
err = mlxsw_sp_port_fdb_static_add(mlxsw_sp_port,
SWITCHDEV_OBJ_PORT_FDB(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 int mlxsw_sp_port_kill_vids(struct net_device *dev, u16 vid_begin,
u16 vid_end)
{
u16 vid;
int err;
for (vid = vid_begin; vid <= vid_end; vid++) {
err = mlxsw_sp_port_kill_vid(dev, 0, vid);
if (err)
return err;
}
return 0;
}
static int __mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
u16 vid_begin, u16 vid_end, bool init)
{
struct net_device *dev = mlxsw_sp_port->dev;
u16 vid, pvid;
int err;
/* In case this is invoked with BRIDGE_FLAGS_SELF and port is
* not bridged, then prevent packets ingressing through the
* port with the specified VIDs from being trapped to CPU.
*/
if (!init && !mlxsw_sp_port->bridged)
return mlxsw_sp_port_kill_vids(dev, vid_begin, vid_end);
err = __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end,
false, false);
if (err) {
netdev_err(dev, "Unable to del VIDs %d-%d\n", vid_begin,
vid_end);
return err;
}
pvid = mlxsw_sp_port->pvid;
if (pvid >= vid_begin && pvid <= vid_end && pvid != 1) {
/* Default VLAN is always 1 */
err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, 1);
if (err) {
netdev_err(dev, "Unable to del PVID %d\n", pvid);
return err;
}
mlxsw_sp_port->pvid = 1;
}
if (init)
goto out;
err = __mlxsw_sp_port_flood_set(mlxsw_sp_port, vid_begin, vid_end,
false, false);
if (err) {
netdev_err(dev, "Failed to clear flooding\n");
return err;
}
for (vid = vid_begin; vid <= vid_end; vid++) {
/* Remove FID mapping in case of Virtual mode */
err = mlxsw_sp_port_fid_unmap(mlxsw_sp_port, vid);
if (err) {
netdev_err(dev, "Failed to unmap FID=%d", vid);
return err;
}
}
out:
/* Changing activity bits only if HW operation succeded */
for (vid = vid_begin; vid <= vid_end; vid++)
clear_bit(vid, mlxsw_sp_port->active_vlans);
return 0;
}
static int mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
const struct switchdev_obj_port_vlan *vlan)
{
return __mlxsw_sp_port_vlans_del(mlxsw_sp_port,
vlan->vid_begin, vlan->vid_end, false);
}
void mlxsw_sp_port_active_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port)
{
u16 vid;
for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID)
__mlxsw_sp_port_vlans_del(mlxsw_sp_port, vid, vid, false);
}
static int
mlxsw_sp_port_fdb_static_del(struct mlxsw_sp_port *mlxsw_sp_port,
const struct switchdev_obj_port_fdb *fdb)
{
u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, fdb->vid);
u16 lag_vid = 0;
if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
lag_vid = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
}
if (!mlxsw_sp_port->lagged)
return mlxsw_sp_port_fdb_uc_op(mlxsw_sp_port->mlxsw_sp,
mlxsw_sp_port->local_port,
fdb->addr, fid,
false, false);
else
return mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp_port->mlxsw_sp,
mlxsw_sp_port->lag_id,
fdb->addr, fid, lag_vid,
false, false);
}
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 *dev = mlxsw_sp_port->dev;
struct mlxsw_sp_mid *mid;
u16 fid = mlxsw_sp_port_vid_to_fid_get(mlxsw_sp_port, mdb->vid);
u16 mid_idx;
int err = 0;
mid = __mlxsw_sp_mc_get(mlxsw_sp, mdb->addr, mdb->vid);
if (!mid) {
netdev_err(dev, "Unable to remove port from MC DB\n");
return -EINVAL;
}
err = mlxsw_sp_port_smid_set(mlxsw_sp_port, mid->mid, false, false);
if (err)
netdev_err(dev, "Unable to remove port from SMID\n");
mid_idx = mid->mid;
if (__mlxsw_sp_mc_dec_ref(mlxsw_sp, mid)) {
err = mlxsw_sp_port_mdb_op(mlxsw_sp, mdb->addr, fid, mid_idx,
false);
if (err)
netdev_err(dev, "Unable to remove MC SFD\n");
}
return err;
}
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;
mlxsw_sp_port = mlxsw_sp_port_orig_get(obj->orig_dev, mlxsw_sp_port);
if (!mlxsw_sp_port)
return -EINVAL;
switch (obj->id) {
case SWITCHDEV_OBJ_ID_PORT_VLAN:
if (mlxsw_sp_port_is_vport(mlxsw_sp_port))
return 0;
err = mlxsw_sp_port_vlans_del(mlxsw_sp_port,
SWITCHDEV_OBJ_PORT_VLAN(obj));
break;
case SWITCHDEV_OBJ_ID_PORT_FDB:
err = mlxsw_sp_port_fdb_static_del(mlxsw_sp_port,
SWITCHDEV_OBJ_PORT_FDB(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;
int i;
for (i = 0; i < MLXSW_SP_PORT_PER_LAG_MAX; 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 int mlxsw_sp_port_fdb_dump(struct mlxsw_sp_port *mlxsw_sp_port,
struct switchdev_obj_port_fdb *fdb,
switchdev_obj_dump_cb_t *cb,
struct net_device *orig_dev)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
struct mlxsw_sp_port *tmp;
u16 vport_fid = 0;
char *sfd_pl;
char mac[ETH_ALEN];
u16 fid;
u8 local_port;
u16 lag_id;
u8 num_rec;
int stored_err = 0;
int i;
int err;
sfd_pl = kmalloc(MLXSW_REG_SFD_LEN, GFP_KERNEL);
if (!sfd_pl)
return -ENOMEM;
if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
u16 tmp;
tmp = mlxsw_sp_vport_vfid_get(mlxsw_sp_port);
vport_fid = mlxsw_sp_vfid_to_fid(tmp);
}
mlxsw_reg_sfd_pack(sfd_pl, MLXSW_REG_SFD_OP_QUERY_DUMP, 0);
do {
mlxsw_reg_sfd_num_rec_set(sfd_pl, MLXSW_REG_SFD_REC_MAX_COUNT);
err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(sfd), sfd_pl);
if (err)
goto out;
num_rec = mlxsw_reg_sfd_num_rec_get(sfd_pl);
/* Even in case of error, we have to run the dump to the end
* so the session in firmware is finished.
*/
if (stored_err)
continue;
for (i = 0; i < num_rec; i++) {
switch (mlxsw_reg_sfd_rec_type_get(sfd_pl, i)) {
case MLXSW_REG_SFD_REC_TYPE_UNICAST:
mlxsw_reg_sfd_uc_unpack(sfd_pl, i, mac, &fid,
&local_port);
if (local_port == mlxsw_sp_port->local_port) {
if (vport_fid && vport_fid == fid)
fdb->vid = 0;
else if (!vport_fid &&
!mlxsw_sp_fid_is_vfid(fid))
fdb->vid = fid;
else
continue;
ether_addr_copy(fdb->addr, mac);
fdb->ndm_state = NUD_REACHABLE;
err = cb(&fdb->obj);
if (err)
stored_err = err;
}
break;
case MLXSW_REG_SFD_REC_TYPE_UNICAST_LAG:
mlxsw_reg_sfd_uc_lag_unpack(sfd_pl, i,
mac, &fid, &lag_id);
tmp = mlxsw_sp_lag_rep_port(mlxsw_sp, lag_id);
if (tmp && tmp->local_port ==
mlxsw_sp_port->local_port) {
/* LAG records can only point to LAG
* devices or VLAN devices on top.
*/
if (!netif_is_lag_master(orig_dev) &&
!is_vlan_dev(orig_dev))
continue;
if (vport_fid && vport_fid == fid)
fdb->vid = 0;
else if (!vport_fid &&
!mlxsw_sp_fid_is_vfid(fid))
fdb->vid = fid;
else
continue;
ether_addr_copy(fdb->addr, mac);
fdb->ndm_state = NUD_REACHABLE;
err = cb(&fdb->obj);
if (err)
stored_err = err;
}
break;
}
}
} while (num_rec == MLXSW_REG_SFD_REC_MAX_COUNT);
out:
kfree(sfd_pl);
return stored_err ? stored_err : err;
}
static int mlxsw_sp_port_vlan_dump(struct mlxsw_sp_port *mlxsw_sp_port,
struct switchdev_obj_port_vlan *vlan,
switchdev_obj_dump_cb_t *cb)
{
u16 vid;
int err = 0;
if (mlxsw_sp_port_is_vport(mlxsw_sp_port)) {
vlan->flags = 0;
vlan->vid_begin = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
vlan->vid_end = mlxsw_sp_vport_vid_get(mlxsw_sp_port);
return cb(&vlan->obj);
}
for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID) {
vlan->flags = 0;
if (vid == mlxsw_sp_port->pvid)
vlan->flags |= BRIDGE_VLAN_INFO_PVID;
if (test_bit(vid, mlxsw_sp_port->untagged_vlans))
vlan->flags |= BRIDGE_VLAN_INFO_UNTAGGED;
vlan->vid_begin = vid;
vlan->vid_end = vid;
err = cb(&vlan->obj);
if (err)
break;
}
return err;
}
static int mlxsw_sp_port_obj_dump(struct net_device *dev,
struct switchdev_obj *obj,
switchdev_obj_dump_cb_t *cb)
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
int err = 0;
mlxsw_sp_port = mlxsw_sp_port_orig_get(obj->orig_dev, mlxsw_sp_port);
if (!mlxsw_sp_port)
return -EINVAL;
switch (obj->id) {
case SWITCHDEV_OBJ_ID_PORT_VLAN:
err = mlxsw_sp_port_vlan_dump(mlxsw_sp_port,
SWITCHDEV_OBJ_PORT_VLAN(obj), cb);
break;
case SWITCHDEV_OBJ_ID_PORT_FDB:
err = mlxsw_sp_port_fdb_dump(mlxsw_sp_port,
SWITCHDEV_OBJ_PORT_FDB(obj), cb,
obj->orig_dev);
break;
default:
err = -EOPNOTSUPP;
break;
}
return err;
}
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,
.switchdev_port_obj_dump = mlxsw_sp_port_obj_dump,
};
static void mlxsw_sp_fdb_call_notifiers(bool learning_sync, bool adding,
char *mac, u16 vid,
struct net_device *dev)
{
struct switchdev_notifier_fdb_info info;
unsigned long notifier_type;
if (learning_sync) {
info.addr = mac;
info.vid = vid;
notifier_type = adding ? SWITCHDEV_FDB_ADD : SWITCHDEV_FDB_DEL;
call_switchdev_notifiers(notifier_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 *mlxsw_sp_port;
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;
}
if (mlxsw_sp_fid_is_vfid(fid)) {
u16 vfid = mlxsw_sp_fid_to_vfid(fid);
struct mlxsw_sp_port *mlxsw_sp_vport;
mlxsw_sp_vport = mlxsw_sp_port_vport_find_by_vfid(mlxsw_sp_port,
vfid);
if (!mlxsw_sp_vport) {
netdev_err(mlxsw_sp_port->dev, "Failed to find a matching vPort following FDB notification\n");
goto just_remove;
}
vid = 0;
/* Override the physical port with the vPort. */
mlxsw_sp_port = mlxsw_sp_vport;
} else {
vid = fid;
}
adding = adding && mlxsw_sp_port->learning;
do_fdb_op:
err = mlxsw_sp_port_fdb_uc_op(mlxsw_sp, local_port, mac, fid,
adding, true);
if (err) {
if (net_ratelimit())
netdev_err(mlxsw_sp_port->dev, "Failed to set FDB entry\n");
return;
}
if (!do_notification)
return;
mlxsw_sp_fdb_call_notifiers(mlxsw_sp_port->learning_sync,
adding, mac, vid, mlxsw_sp_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 *mlxsw_sp_port;
struct net_device *dev;
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;
}
if (mlxsw_sp_fid_is_vfid(fid)) {
u16 vfid = mlxsw_sp_fid_to_vfid(fid);
struct mlxsw_sp_port *mlxsw_sp_vport;
mlxsw_sp_vport = mlxsw_sp_port_vport_find_by_vfid(mlxsw_sp_port,
vfid);
if (!mlxsw_sp_vport) {
netdev_err(mlxsw_sp_port->dev, "Failed to find a matching vPort following FDB notification\n");
goto just_remove;
}
lag_vid = mlxsw_sp_vport_vid_get(mlxsw_sp_vport);
dev = mlxsw_sp_vport->dev;
vid = 0;
/* Override the physical port with the vPort. */
mlxsw_sp_port = mlxsw_sp_vport;
} else {
dev = mlxsw_sp_lag_get(mlxsw_sp, lag_id)->dev;
vid = fid;
}
adding = adding && mlxsw_sp_port->learning;
do_fdb_op:
err = mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp, lag_id, mac, fid, lag_vid,
adding, true);
if (err) {
if (net_ratelimit())
netdev_err(mlxsw_sp_port->dev, "Failed to set FDB entry\n");
return;
}
if (!do_notification)
return;
mlxsw_sp_fdb_call_notifiers(mlxsw_sp_port->learning_sync, adding, mac,
vid, 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)
{
schedule_delayed_work(&mlxsw_sp->fdb_notify.dw,
msecs_to_jiffies(mlxsw_sp->fdb_notify.interval));
}
static void mlxsw_sp_fdb_notify_work(struct work_struct *work)
{
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;
mlxsw_sp = container_of(work, struct mlxsw_sp, fdb_notify.dw.work);
rtnl_lock();
do {
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");
break;
}
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);
} while (num_rec);
rtnl_unlock();
kfree(sfn_pl);
mlxsw_sp_fdb_notify_work_schedule(mlxsw_sp);
}
static int mlxsw_sp_fdb_init(struct mlxsw_sp *mlxsw_sp)
{
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;
}
INIT_DELAYED_WORK(&mlxsw_sp->fdb_notify.dw, mlxsw_sp_fdb_notify_work);
mlxsw_sp->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->fdb_notify.dw);
}
static void mlxsw_sp_fids_fini(struct mlxsw_sp *mlxsw_sp)
{
u16 fid;
for_each_set_bit(fid, mlxsw_sp->active_fids, VLAN_N_VID)
mlxsw_sp_fid_destroy(mlxsw_sp, fid);
}
int mlxsw_sp_switchdev_init(struct mlxsw_sp *mlxsw_sp)
{
return mlxsw_sp_fdb_init(mlxsw_sp);
}
void mlxsw_sp_switchdev_fini(struct mlxsw_sp *mlxsw_sp)
{
mlxsw_sp_fdb_fini(mlxsw_sp);
mlxsw_sp_fids_fini(mlxsw_sp);
}
int mlxsw_sp_port_vlan_init(struct mlxsw_sp_port *mlxsw_sp_port)
{
struct net_device *dev = mlxsw_sp_port->dev;
int err;
/* Allow only untagged packets to ingress and tag them internally
* with VID 1.
*/
mlxsw_sp_port->pvid = 1;
err = __mlxsw_sp_port_vlans_del(mlxsw_sp_port, 0, VLAN_N_VID - 1,
true);
if (err) {
netdev_err(dev, "Unable to init VLANs\n");
return err;
}
/* Add implicit VLAN interface in the device, so that untagged
* packets will be classified to the default vFID.
*/
err = mlxsw_sp_port_add_vid(dev, 0, 1);
if (err)
netdev_err(dev, "Failed to configure default vFID\n");
return err;
}
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)
{
}