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android-kvm / linux / 285063049a65251aada1c34664de692dd083aa03 / . / drivers / net / ethernet / mellanox / mlx5 / core / eswitch.c
blob: 0f052513fefa104d882355dece4fdbb264d8277d [file] [log] [blame]
/*
* Copyright (c) 2015, Mellanox Technologies. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - 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.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <linux/etherdevice.h>
#include <linux/mlx5/driver.h>
#include <linux/mlx5/mlx5_ifc.h>
#include <linux/mlx5/vport.h>
#include <linux/mlx5/fs.h>
#include <linux/mlx5/mpfs.h>
#include <linux/debugfs.h>
#include "esw/acl/lgcy.h"
#include "esw/legacy.h"
#include "esw/qos.h"
#include "mlx5_core.h"
#include "lib/eq.h"
#include "eswitch.h"
#include "fs_core.h"
#include "devlink.h"
#include "ecpf.h"
#include "en/mod_hdr.h"
enum {
MLX5_ACTION_NONE = 0,
MLX5_ACTION_ADD = 1,
MLX5_ACTION_DEL = 2,
};
/* Vport UC/MC hash node */
struct vport_addr {
struct l2addr_node node;
u8 action;
u16 vport;
struct mlx5_flow_handle *flow_rule;
bool mpfs; /* UC MAC was added to MPFs */
/* A flag indicating that mac was added due to mc promiscuous vport */
bool mc_promisc;
};
static int mlx5_eswitch_check(const struct mlx5_core_dev *dev)
{
if (MLX5_CAP_GEN(dev, port_type) != MLX5_CAP_PORT_TYPE_ETH)
return -EOPNOTSUPP;
if (!MLX5_ESWITCH_MANAGER(dev))
return -EOPNOTSUPP;
return 0;
}
struct mlx5_eswitch *mlx5_devlink_eswitch_get(struct devlink *devlink)
{
struct mlx5_core_dev *dev = devlink_priv(devlink);
int err;
err = mlx5_eswitch_check(dev);
if (err)
return ERR_PTR(err);
return dev->priv.eswitch;
}
struct mlx5_vport *__must_check
mlx5_eswitch_get_vport(struct mlx5_eswitch *esw, u16 vport_num)
{
struct mlx5_vport *vport;
if (!esw || !MLX5_CAP_GEN(esw->dev, vport_group_manager))
return ERR_PTR(-EPERM);
vport = xa_load(&esw->vports, vport_num);
if (!vport) {
esw_debug(esw->dev, "vport out of range: num(0x%x)\n", vport_num);
return ERR_PTR(-EINVAL);
}
return vport;
}
static int arm_vport_context_events_cmd(struct mlx5_core_dev *dev, u16 vport,
u32 events_mask)
{
u32 in[MLX5_ST_SZ_DW(modify_nic_vport_context_in)] = {};
void *nic_vport_ctx;
MLX5_SET(modify_nic_vport_context_in, in,
opcode, MLX5_CMD_OP_MODIFY_NIC_VPORT_CONTEXT);
MLX5_SET(modify_nic_vport_context_in, in, field_select.change_event, 1);
MLX5_SET(modify_nic_vport_context_in, in, vport_number, vport);
MLX5_SET(modify_nic_vport_context_in, in, other_vport, 1);
nic_vport_ctx = MLX5_ADDR_OF(modify_nic_vport_context_in,
in, nic_vport_context);
MLX5_SET(nic_vport_context, nic_vport_ctx, arm_change_event, 1);
if (events_mask & MLX5_VPORT_UC_ADDR_CHANGE)
MLX5_SET(nic_vport_context, nic_vport_ctx,
event_on_uc_address_change, 1);
if (events_mask & MLX5_VPORT_MC_ADDR_CHANGE)
MLX5_SET(nic_vport_context, nic_vport_ctx,
event_on_mc_address_change, 1);
if (events_mask & MLX5_VPORT_PROMISC_CHANGE)
MLX5_SET(nic_vport_context, nic_vport_ctx,
event_on_promisc_change, 1);
return mlx5_cmd_exec_in(dev, modify_nic_vport_context, in);
}
/* E-Switch vport context HW commands */
int mlx5_eswitch_modify_esw_vport_context(struct mlx5_core_dev *dev, u16 vport,
bool other_vport, void *in)
{
MLX5_SET(modify_esw_vport_context_in, in, opcode,
MLX5_CMD_OP_MODIFY_ESW_VPORT_CONTEXT);
MLX5_SET(modify_esw_vport_context_in, in, vport_number, vport);
MLX5_SET(modify_esw_vport_context_in, in, other_vport, other_vport);
return mlx5_cmd_exec_in(dev, modify_esw_vport_context, in);
}
static int modify_esw_vport_cvlan(struct mlx5_core_dev *dev, u16 vport,
u16 vlan, u8 qos, u8 set_flags)
{
u32 in[MLX5_ST_SZ_DW(modify_esw_vport_context_in)] = {};
if (!MLX5_CAP_ESW(dev, vport_cvlan_strip) ||
!MLX5_CAP_ESW(dev, vport_cvlan_insert_if_not_exist))
return -EOPNOTSUPP;
esw_debug(dev, "Set Vport[%d] VLAN %d qos %d set=%x\n",
vport, vlan, qos, set_flags);
if (set_flags & SET_VLAN_STRIP)
MLX5_SET(modify_esw_vport_context_in, in,
esw_vport_context.vport_cvlan_strip, 1);
if (set_flags & SET_VLAN_INSERT) {
if (MLX5_CAP_ESW(dev, vport_cvlan_insert_always)) {
/* insert either if vlan exist in packet or not */
MLX5_SET(modify_esw_vport_context_in, in,
esw_vport_context.vport_cvlan_insert,
MLX5_VPORT_CVLAN_INSERT_ALWAYS);
} else {
/* insert only if no vlan in packet */
MLX5_SET(modify_esw_vport_context_in, in,
esw_vport_context.vport_cvlan_insert,
MLX5_VPORT_CVLAN_INSERT_WHEN_NO_CVLAN);
}
MLX5_SET(modify_esw_vport_context_in, in,
esw_vport_context.cvlan_pcp, qos);
MLX5_SET(modify_esw_vport_context_in, in,
esw_vport_context.cvlan_id, vlan);
}
MLX5_SET(modify_esw_vport_context_in, in,
field_select.vport_cvlan_strip, 1);
MLX5_SET(modify_esw_vport_context_in, in,
field_select.vport_cvlan_insert, 1);
return mlx5_eswitch_modify_esw_vport_context(dev, vport, true, in);
}
/* E-Switch FDB */
static struct mlx5_flow_handle *
__esw_fdb_set_vport_rule(struct mlx5_eswitch *esw, u16 vport, bool rx_rule,
u8 mac_c[ETH_ALEN], u8 mac_v[ETH_ALEN])
{
int match_header = (is_zero_ether_addr(mac_c) ? 0 :
MLX5_MATCH_OUTER_HEADERS);
struct mlx5_flow_handle *flow_rule = NULL;
struct mlx5_flow_act flow_act = {0};
struct mlx5_flow_destination dest = {};
struct mlx5_flow_spec *spec;
void *mv_misc = NULL;
void *mc_misc = NULL;
u8 *dmac_v = NULL;
u8 *dmac_c = NULL;
if (rx_rule)
match_header |= MLX5_MATCH_MISC_PARAMETERS;
spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
if (!spec)
return NULL;
dmac_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
outer_headers.dmac_47_16);
dmac_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
outer_headers.dmac_47_16);
if (match_header & MLX5_MATCH_OUTER_HEADERS) {
ether_addr_copy(dmac_v, mac_v);
ether_addr_copy(dmac_c, mac_c);
}
if (match_header & MLX5_MATCH_MISC_PARAMETERS) {
mv_misc = MLX5_ADDR_OF(fte_match_param, spec->match_value,
misc_parameters);
mc_misc = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
misc_parameters);
MLX5_SET(fte_match_set_misc, mv_misc, source_port, MLX5_VPORT_UPLINK);
MLX5_SET_TO_ONES(fte_match_set_misc, mc_misc, source_port);
}
dest.type = MLX5_FLOW_DESTINATION_TYPE_VPORT;
dest.vport.num = vport;
esw_debug(esw->dev,
"\tFDB add rule dmac_v(%pM) dmac_c(%pM) -> vport(%d)\n",
dmac_v, dmac_c, vport);
spec->match_criteria_enable = match_header;
flow_act.action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
flow_rule =
mlx5_add_flow_rules(esw->fdb_table.legacy.fdb, spec,
&flow_act, &dest, 1);
if (IS_ERR(flow_rule)) {
esw_warn(esw->dev,
"FDB: Failed to add flow rule: dmac_v(%pM) dmac_c(%pM) -> vport(%d), err(%ld)\n",
dmac_v, dmac_c, vport, PTR_ERR(flow_rule));
flow_rule = NULL;
}
kvfree(spec);
return flow_rule;
}
static struct mlx5_flow_handle *
esw_fdb_set_vport_rule(struct mlx5_eswitch *esw, u8 mac[ETH_ALEN], u16 vport)
{
u8 mac_c[ETH_ALEN];
eth_broadcast_addr(mac_c);
return __esw_fdb_set_vport_rule(esw, vport, false, mac_c, mac);
}
static struct mlx5_flow_handle *
esw_fdb_set_vport_allmulti_rule(struct mlx5_eswitch *esw, u16 vport)
{
u8 mac_c[ETH_ALEN];
u8 mac_v[ETH_ALEN];
eth_zero_addr(mac_c);
eth_zero_addr(mac_v);
mac_c[0] = 0x01;
mac_v[0] = 0x01;
return __esw_fdb_set_vport_rule(esw, vport, false, mac_c, mac_v);
}
static struct mlx5_flow_handle *
esw_fdb_set_vport_promisc_rule(struct mlx5_eswitch *esw, u16 vport)
{
u8 mac_c[ETH_ALEN];
u8 mac_v[ETH_ALEN];
eth_zero_addr(mac_c);
eth_zero_addr(mac_v);
return __esw_fdb_set_vport_rule(esw, vport, true, mac_c, mac_v);
}
/* E-Switch vport UC/MC lists management */
typedef int (*vport_addr_action)(struct mlx5_eswitch *esw,
struct vport_addr *vaddr);
static int esw_add_uc_addr(struct mlx5_eswitch *esw, struct vport_addr *vaddr)
{
u8 *mac = vaddr->node.addr;
u16 vport = vaddr->vport;
int err;
/* Skip mlx5_mpfs_add_mac for eswitch_managers,
* it is already done by its netdev in mlx5e_execute_l2_action
*/
if (mlx5_esw_is_manager_vport(esw, vport))
goto fdb_add;
err = mlx5_mpfs_add_mac(esw->dev, mac);
if (err) {
esw_warn(esw->dev,
"Failed to add L2 table mac(%pM) for vport(0x%x), err(%d)\n",
mac, vport, err);
return err;
}
vaddr->mpfs = true;
fdb_add:
/* SRIOV is enabled: Forward UC MAC to vport */
if (esw->fdb_table.legacy.fdb && esw->mode == MLX5_ESWITCH_LEGACY)
vaddr->flow_rule = esw_fdb_set_vport_rule(esw, mac, vport);
esw_debug(esw->dev, "\tADDED UC MAC: vport[%d] %pM fr(%p)\n",
vport, mac, vaddr->flow_rule);
return 0;
}
static int esw_del_uc_addr(struct mlx5_eswitch *esw, struct vport_addr *vaddr)
{
u8 *mac = vaddr->node.addr;
u16 vport = vaddr->vport;
int err = 0;
/* Skip mlx5_mpfs_del_mac for eswitch managers,
* it is already done by its netdev in mlx5e_execute_l2_action
*/
if (!vaddr->mpfs || mlx5_esw_is_manager_vport(esw, vport))
goto fdb_del;
err = mlx5_mpfs_del_mac(esw->dev, mac);
if (err)
esw_warn(esw->dev,
"Failed to del L2 table mac(%pM) for vport(%d), err(%d)\n",
mac, vport, err);
vaddr->mpfs = false;
fdb_del:
if (vaddr->flow_rule)
mlx5_del_flow_rules(vaddr->flow_rule);
vaddr->flow_rule = NULL;
return 0;
}
static void update_allmulti_vports(struct mlx5_eswitch *esw,
struct vport_addr *vaddr,
struct esw_mc_addr *esw_mc)
{
u8 *mac = vaddr->node.addr;
struct mlx5_vport *vport;
unsigned long i;
u16 vport_num;
mlx5_esw_for_each_vport(esw, i, vport) {
struct hlist_head *vport_hash = vport->mc_list;
struct vport_addr *iter_vaddr =
l2addr_hash_find(vport_hash,
mac,
struct vport_addr);
vport_num = vport->vport;
if (IS_ERR_OR_NULL(vport->allmulti_rule) ||
vaddr->vport == vport_num)
continue;
switch (vaddr->action) {
case MLX5_ACTION_ADD:
if (iter_vaddr)
continue;
iter_vaddr = l2addr_hash_add(vport_hash, mac,
struct vport_addr,
GFP_KERNEL);
if (!iter_vaddr) {
esw_warn(esw->dev,
"ALL-MULTI: Failed to add MAC(%pM) to vport[%d] DB\n",
mac, vport_num);
continue;
}
iter_vaddr->vport = vport_num;
iter_vaddr->flow_rule =
esw_fdb_set_vport_rule(esw,
mac,
vport_num);
iter_vaddr->mc_promisc = true;
break;
case MLX5_ACTION_DEL:
if (!iter_vaddr)
continue;
mlx5_del_flow_rules(iter_vaddr->flow_rule);
l2addr_hash_del(iter_vaddr);
break;
}
}
}
static int esw_add_mc_addr(struct mlx5_eswitch *esw, struct vport_addr *vaddr)
{
struct hlist_head *hash = esw->mc_table;
struct esw_mc_addr *esw_mc;
u8 *mac = vaddr->node.addr;
u16 vport = vaddr->vport;
if (!esw->fdb_table.legacy.fdb)
return 0;
esw_mc = l2addr_hash_find(hash, mac, struct esw_mc_addr);
if (esw_mc)
goto add;
esw_mc = l2addr_hash_add(hash, mac, struct esw_mc_addr, GFP_KERNEL);
if (!esw_mc)
return -ENOMEM;
esw_mc->uplink_rule = /* Forward MC MAC to Uplink */
esw_fdb_set_vport_rule(esw, mac, MLX5_VPORT_UPLINK);
/* Add this multicast mac to all the mc promiscuous vports */
update_allmulti_vports(esw, vaddr, esw_mc);
add:
/* If the multicast mac is added as a result of mc promiscuous vport,
* don't increment the multicast ref count
*/
if (!vaddr->mc_promisc)
esw_mc->refcnt++;
/* Forward MC MAC to vport */
vaddr->flow_rule = esw_fdb_set_vport_rule(esw, mac, vport);
esw_debug(esw->dev,
"\tADDED MC MAC: vport[%d] %pM fr(%p) refcnt(%d) uplinkfr(%p)\n",
vport, mac, vaddr->flow_rule,
esw_mc->refcnt, esw_mc->uplink_rule);
return 0;
}
static int esw_del_mc_addr(struct mlx5_eswitch *esw, struct vport_addr *vaddr)
{
struct hlist_head *hash = esw->mc_table;
struct esw_mc_addr *esw_mc;
u8 *mac = vaddr->node.addr;
u16 vport = vaddr->vport;
if (!esw->fdb_table.legacy.fdb)
return 0;
esw_mc = l2addr_hash_find(hash, mac, struct esw_mc_addr);
if (!esw_mc) {
esw_warn(esw->dev,
"Failed to find eswitch MC addr for MAC(%pM) vport(%d)",
mac, vport);
return -EINVAL;
}
esw_debug(esw->dev,
"\tDELETE MC MAC: vport[%d] %pM fr(%p) refcnt(%d) uplinkfr(%p)\n",
vport, mac, vaddr->flow_rule, esw_mc->refcnt,
esw_mc->uplink_rule);
if (vaddr->flow_rule)
mlx5_del_flow_rules(vaddr->flow_rule);
vaddr->flow_rule = NULL;
/* If the multicast mac is added as a result of mc promiscuous vport,
* don't decrement the multicast ref count.
*/
if (vaddr->mc_promisc || (--esw_mc->refcnt > 0))
return 0;
/* Remove this multicast mac from all the mc promiscuous vports */
update_allmulti_vports(esw, vaddr, esw_mc);
if (esw_mc->uplink_rule)
mlx5_del_flow_rules(esw_mc->uplink_rule);
l2addr_hash_del(esw_mc);
return 0;
}
/* Apply vport UC/MC list to HW l2 table and FDB table */
static void esw_apply_vport_addr_list(struct mlx5_eswitch *esw,
struct mlx5_vport *vport, int list_type)
{
bool is_uc = list_type == MLX5_NVPRT_LIST_TYPE_UC;
vport_addr_action vport_addr_add;
vport_addr_action vport_addr_del;
struct vport_addr *addr;
struct l2addr_node *node;
struct hlist_head *hash;
struct hlist_node *tmp;
int hi;
vport_addr_add = is_uc ? esw_add_uc_addr :
esw_add_mc_addr;
vport_addr_del = is_uc ? esw_del_uc_addr :
esw_del_mc_addr;
hash = is_uc ? vport->uc_list : vport->mc_list;
for_each_l2hash_node(node, tmp, hash, hi) {
addr = container_of(node, struct vport_addr, node);
switch (addr->action) {
case MLX5_ACTION_ADD:
vport_addr_add(esw, addr);
addr->action = MLX5_ACTION_NONE;
break;
case MLX5_ACTION_DEL:
vport_addr_del(esw, addr);
l2addr_hash_del(addr);
break;
}
}
}
/* Sync vport UC/MC list from vport context */
static void esw_update_vport_addr_list(struct mlx5_eswitch *esw,
struct mlx5_vport *vport, int list_type)
{
bool is_uc = list_type == MLX5_NVPRT_LIST_TYPE_UC;
u8 (*mac_list)[ETH_ALEN];
struct l2addr_node *node;
struct vport_addr *addr;
struct hlist_head *hash;
struct hlist_node *tmp;
int size;
int err;
int hi;
int i;
size = is_uc ? MLX5_MAX_UC_PER_VPORT(esw->dev) :
MLX5_MAX_MC_PER_VPORT(esw->dev);
mac_list = kcalloc(size, ETH_ALEN, GFP_KERNEL);
if (!mac_list)
return;
hash = is_uc ? vport->uc_list : vport->mc_list;
for_each_l2hash_node(node, tmp, hash, hi) {
addr = container_of(node, struct vport_addr, node);
addr->action = MLX5_ACTION_DEL;
}
if (!vport->enabled)
goto out;
err = mlx5_query_nic_vport_mac_list(esw->dev, vport->vport, list_type,
mac_list, &size);
if (err)
goto out;
esw_debug(esw->dev, "vport[%d] context update %s list size (%d)\n",
vport->vport, is_uc ? "UC" : "MC", size);
for (i = 0; i < size; i++) {
if (is_uc && !is_valid_ether_addr(mac_list[i]))
continue;
if (!is_uc && !is_multicast_ether_addr(mac_list[i]))
continue;
addr = l2addr_hash_find(hash, mac_list[i], struct vport_addr);
if (addr) {
addr->action = MLX5_ACTION_NONE;
/* If this mac was previously added because of allmulti
* promiscuous rx mode, its now converted to be original
* vport mac.
*/
if (addr->mc_promisc) {
struct esw_mc_addr *esw_mc =
l2addr_hash_find(esw->mc_table,
mac_list[i],
struct esw_mc_addr);
if (!esw_mc) {
esw_warn(esw->dev,
"Failed to MAC(%pM) in mcast DB\n",
mac_list[i]);
continue;
}
esw_mc->refcnt++;
addr->mc_promisc = false;
}
continue;
}
addr = l2addr_hash_add(hash, mac_list[i], struct vport_addr,
GFP_KERNEL);
if (!addr) {
esw_warn(esw->dev,
"Failed to add MAC(%pM) to vport[%d] DB\n",
mac_list[i], vport->vport);
continue;
}
addr->vport = vport->vport;
addr->action = MLX5_ACTION_ADD;
}
out:
kfree(mac_list);
}
/* Sync vport UC/MC list from vport context
* Must be called after esw_update_vport_addr_list
*/
static void esw_update_vport_mc_promisc(struct mlx5_eswitch *esw,
struct mlx5_vport *vport)
{
struct l2addr_node *node;
struct vport_addr *addr;
struct hlist_head *hash;
struct hlist_node *tmp;
int hi;
hash = vport->mc_list;
for_each_l2hash_node(node, tmp, esw->mc_table, hi) {
u8 *mac = node->addr;
addr = l2addr_hash_find(hash, mac, struct vport_addr);
if (addr) {
if (addr->action == MLX5_ACTION_DEL)
addr->action = MLX5_ACTION_NONE;
continue;
}
addr = l2addr_hash_add(hash, mac, struct vport_addr,
GFP_KERNEL);
if (!addr) {
esw_warn(esw->dev,
"Failed to add allmulti MAC(%pM) to vport[%d] DB\n",
mac, vport->vport);
continue;
}
addr->vport = vport->vport;
addr->action = MLX5_ACTION_ADD;
addr->mc_promisc = true;
}
}
/* Apply vport rx mode to HW FDB table */
static void esw_apply_vport_rx_mode(struct mlx5_eswitch *esw,
struct mlx5_vport *vport,
bool promisc, bool mc_promisc)
{
struct esw_mc_addr *allmulti_addr = &esw->mc_promisc;
if (IS_ERR_OR_NULL(vport->allmulti_rule) != mc_promisc)
goto promisc;
if (mc_promisc) {
vport->allmulti_rule =
esw_fdb_set_vport_allmulti_rule(esw, vport->vport);
if (!allmulti_addr->uplink_rule)
allmulti_addr->uplink_rule =
esw_fdb_set_vport_allmulti_rule(esw,
MLX5_VPORT_UPLINK);
allmulti_addr->refcnt++;
} else if (vport->allmulti_rule) {
mlx5_del_flow_rules(vport->allmulti_rule);
vport->allmulti_rule = NULL;
if (--allmulti_addr->refcnt > 0)
goto promisc;
if (allmulti_addr->uplink_rule)
mlx5_del_flow_rules(allmulti_addr->uplink_rule);
allmulti_addr->uplink_rule = NULL;
}
promisc:
if (IS_ERR_OR_NULL(vport->promisc_rule) != promisc)
return;
if (promisc) {
vport->promisc_rule =
esw_fdb_set_vport_promisc_rule(esw, vport->vport);
} else if (vport->promisc_rule) {
mlx5_del_flow_rules(vport->promisc_rule);
vport->promisc_rule = NULL;
}
}
/* Sync vport rx mode from vport context */
static void esw_update_vport_rx_mode(struct mlx5_eswitch *esw,
struct mlx5_vport *vport)
{
int promisc_all = 0;
int promisc_uc = 0;
int promisc_mc = 0;
int err;
err = mlx5_query_nic_vport_promisc(esw->dev,
vport->vport,
&promisc_uc,
&promisc_mc,
&promisc_all);
if (err)
return;
esw_debug(esw->dev, "vport[%d] context update rx mode promisc_all=%d, all_multi=%d\n",
vport->vport, promisc_all, promisc_mc);
if (!vport->info.trusted || !vport->enabled) {
promisc_uc = 0;
promisc_mc = 0;
promisc_all = 0;
}
esw_apply_vport_rx_mode(esw, vport, promisc_all,
(promisc_all || promisc_mc));
}
void esw_vport_change_handle_locked(struct mlx5_vport *vport)
{
struct mlx5_core_dev *dev = vport->dev;
struct mlx5_eswitch *esw = dev->priv.eswitch;
u8 mac[ETH_ALEN];
mlx5_query_nic_vport_mac_address(dev, vport->vport, true, mac);
esw_debug(dev, "vport[%d] Context Changed: perm mac: %pM\n",
vport->vport, mac);
if (vport->enabled_events & MLX5_VPORT_UC_ADDR_CHANGE) {
esw_update_vport_addr_list(esw, vport, MLX5_NVPRT_LIST_TYPE_UC);
esw_apply_vport_addr_list(esw, vport, MLX5_NVPRT_LIST_TYPE_UC);
}
if (vport->enabled_events & MLX5_VPORT_MC_ADDR_CHANGE)
esw_update_vport_addr_list(esw, vport, MLX5_NVPRT_LIST_TYPE_MC);
if (vport->enabled_events & MLX5_VPORT_PROMISC_CHANGE) {
esw_update_vport_rx_mode(esw, vport);
if (!IS_ERR_OR_NULL(vport->allmulti_rule))
esw_update_vport_mc_promisc(esw, vport);
}
if (vport->enabled_events & (MLX5_VPORT_PROMISC_CHANGE | MLX5_VPORT_MC_ADDR_CHANGE))
esw_apply_vport_addr_list(esw, vport, MLX5_NVPRT_LIST_TYPE_MC);
esw_debug(esw->dev, "vport[%d] Context Changed: Done\n", vport->vport);
if (vport->enabled)
arm_vport_context_events_cmd(dev, vport->vport,
vport->enabled_events);
}
static void esw_vport_change_handler(struct work_struct *work)
{
struct mlx5_vport *vport =
container_of(work, struct mlx5_vport, vport_change_handler);
struct mlx5_eswitch *esw = vport->dev->priv.eswitch;
mutex_lock(&esw->state_lock);
esw_vport_change_handle_locked(vport);
mutex_unlock(&esw->state_lock);
}
static void node_guid_gen_from_mac(u64 *node_guid, const u8 *mac)
{
((u8 *)node_guid)[7] = mac[0];
((u8 *)node_guid)[6] = mac[1];
((u8 *)node_guid)[5] = mac[2];
((u8 *)node_guid)[4] = 0xff;
((u8 *)node_guid)[3] = 0xfe;
((u8 *)node_guid)[2] = mac[3];
((u8 *)node_guid)[1] = mac[4];
((u8 *)node_guid)[0] = mac[5];
}
static int esw_vport_setup_acl(struct mlx5_eswitch *esw,
struct mlx5_vport *vport)
{
if (esw->mode == MLX5_ESWITCH_LEGACY)
return esw_legacy_vport_acl_setup(esw, vport);
else
return esw_vport_create_offloads_acl_tables(esw, vport);
}
static void esw_vport_cleanup_acl(struct mlx5_eswitch *esw,
struct mlx5_vport *vport)
{
if (esw->mode == MLX5_ESWITCH_LEGACY)
esw_legacy_vport_acl_cleanup(esw, vport);
else
esw_vport_destroy_offloads_acl_tables(esw, vport);
}
static int mlx5_esw_vport_caps_get(struct mlx5_eswitch *esw, struct mlx5_vport *vport)
{
int query_out_sz = MLX5_ST_SZ_BYTES(query_hca_cap_out);
void *query_ctx;
void *hca_caps;
int err;
if (!MLX5_CAP_GEN(esw->dev, vhca_resource_manager))
return 0;
query_ctx = kzalloc(query_out_sz, GFP_KERNEL);
if (!query_ctx)
return -ENOMEM;
err = mlx5_vport_get_other_func_cap(esw->dev, vport->vport, query_ctx,
MLX5_CAP_GENERAL);
if (err)
goto out_free;
hca_caps = MLX5_ADDR_OF(query_hca_cap_out, query_ctx, capability);
vport->info.roce_enabled = MLX5_GET(cmd_hca_cap, hca_caps, roce);
memset(query_ctx, 0, query_out_sz);
err = mlx5_vport_get_other_func_cap(esw->dev, vport->vport, query_ctx,
MLX5_CAP_GENERAL_2);
if (err)
goto out_free;
hca_caps = MLX5_ADDR_OF(query_hca_cap_out, query_ctx, capability);
vport->info.mig_enabled = MLX5_GET(cmd_hca_cap_2, hca_caps, migratable);
out_free:
kfree(query_ctx);
return err;
}
static int esw_vport_setup(struct mlx5_eswitch *esw, struct mlx5_vport *vport)
{
bool vst_mode_steering = esw_vst_mode_is_steering(esw);
u16 vport_num = vport->vport;
int flags;
int err;
err = esw_vport_setup_acl(esw, vport);
if (err)
return err;
if (mlx5_esw_is_manager_vport(esw, vport_num))
return 0;
err = mlx5_esw_vport_caps_get(esw, vport);
if (err)
goto err_caps;
mlx5_modify_vport_admin_state(esw->dev,
MLX5_VPORT_STATE_OP_MOD_ESW_VPORT,
vport_num, 1,
vport->info.link_state);
/* Host PF has its own mac/guid. */
if (vport_num) {
mlx5_modify_nic_vport_mac_address(esw->dev, vport_num,
vport->info.mac);
mlx5_modify_nic_vport_node_guid(esw->dev, vport_num,
vport->info.node_guid);
}
flags = (vport->info.vlan || vport->info.qos) ?
SET_VLAN_STRIP | SET_VLAN_INSERT : 0;
if (esw->mode == MLX5_ESWITCH_OFFLOADS || !vst_mode_steering)
modify_esw_vport_cvlan(esw->dev, vport_num, vport->info.vlan,
vport->info.qos, flags);
return 0;
err_caps:
esw_vport_cleanup_acl(esw, vport);
return err;
}
/* Don't cleanup vport->info, it's needed to restore vport configuration */
static void esw_vport_cleanup(struct mlx5_eswitch *esw, struct mlx5_vport *vport)
{
u16 vport_num = vport->vport;
if (!mlx5_esw_is_manager_vport(esw, vport_num))
mlx5_modify_vport_admin_state(esw->dev,
MLX5_VPORT_STATE_OP_MOD_ESW_VPORT,
vport_num, 1,
MLX5_VPORT_ADMIN_STATE_DOWN);
mlx5_esw_qos_vport_disable(esw, vport);
esw_vport_cleanup_acl(esw, vport);
}
int mlx5_esw_vport_enable(struct mlx5_eswitch *esw, u16 vport_num,
enum mlx5_eswitch_vport_event enabled_events)
{
struct mlx5_vport *vport;
int ret;
vport = mlx5_eswitch_get_vport(esw, vport_num);
if (IS_ERR(vport))
return PTR_ERR(vport);
mutex_lock(&esw->state_lock);
WARN_ON(vport->enabled);
esw_debug(esw->dev, "Enabling VPORT(%d)\n", vport_num);
ret = esw_vport_setup(esw, vport);
if (ret)
goto done;
/* Sync with current vport context */
vport->enabled_events = enabled_events;
vport->enabled = true;
/* Esw manager is trusted by default. Host PF (vport 0) is trusted as well
* in smartNIC as it's a vport group manager.
*/
if (mlx5_esw_is_manager_vport(esw, vport_num) ||
(!vport_num && mlx5_core_is_ecpf(esw->dev)))
vport->info.trusted = true;
if (!mlx5_esw_is_manager_vport(esw, vport->vport) &&
MLX5_CAP_GEN(esw->dev, vhca_resource_manager)) {
ret = mlx5_esw_vport_vhca_id_set(esw, vport_num);
if (ret)
goto err_vhca_mapping;
}
/* External controller host PF has factory programmed MAC.
* Read it from the device.
*/
if (mlx5_core_is_ecpf(esw->dev) && vport_num == MLX5_VPORT_PF)
mlx5_query_nic_vport_mac_address(esw->dev, vport_num, true, vport->info.mac);
esw_vport_change_handle_locked(vport);
esw->enabled_vports++;
esw_debug(esw->dev, "Enabled VPORT(%d)\n", vport_num);
done:
mutex_unlock(&esw->state_lock);
return ret;
err_vhca_mapping:
esw_vport_cleanup(esw, vport);
mutex_unlock(&esw->state_lock);
return ret;
}
void mlx5_esw_vport_disable(struct mlx5_eswitch *esw, u16 vport_num)
{
struct mlx5_vport *vport;
vport = mlx5_eswitch_get_vport(esw, vport_num);
if (IS_ERR(vport))
return;
mutex_lock(&esw->state_lock);
if (!vport->enabled)
goto done;
esw_debug(esw->dev, "Disabling vport(%d)\n", vport_num);
/* Mark this vport as disabled to discard new events */
vport->enabled = false;
/* Disable events from this vport */
arm_vport_context_events_cmd(esw->dev, vport->vport, 0);
if (!mlx5_esw_is_manager_vport(esw, vport->vport) &&
MLX5_CAP_GEN(esw->dev, vhca_resource_manager))
mlx5_esw_vport_vhca_id_clear(esw, vport_num);
/* We don't assume VFs will cleanup after themselves.
* Calling vport change handler while vport is disabled will cleanup
* the vport resources.
*/
esw_vport_change_handle_locked(vport);
vport->enabled_events = 0;
esw_vport_cleanup(esw, vport);
esw->enabled_vports--;
done:
mutex_unlock(&esw->state_lock);
}
static int eswitch_vport_event(struct notifier_block *nb,
unsigned long type, void *data)
{
struct mlx5_eswitch *esw = mlx5_nb_cof(nb, struct mlx5_eswitch, nb);
struct mlx5_eqe *eqe = data;
struct mlx5_vport *vport;
u16 vport_num;
vport_num = be16_to_cpu(eqe->data.vport_change.vport_num);
vport = mlx5_eswitch_get_vport(esw, vport_num);
if (!IS_ERR(vport))
queue_work(esw->work_queue, &vport->vport_change_handler);
return NOTIFY_OK;
}
/**
* mlx5_esw_query_functions - Returns raw output about functions state
* @dev: Pointer to device to query
*
* mlx5_esw_query_functions() allocates and returns functions changed
* raw output memory pointer from device on success. Otherwise returns ERR_PTR.
* Caller must free the memory using kvfree() when valid pointer is returned.
*/
const u32 *mlx5_esw_query_functions(struct mlx5_core_dev *dev)
{
int outlen = MLX5_ST_SZ_BYTES(query_esw_functions_out);
u32 in[MLX5_ST_SZ_DW(query_esw_functions_in)] = {};
u32 *out;
int err;
out = kvzalloc(outlen, GFP_KERNEL);
if (!out)
return ERR_PTR(-ENOMEM);
MLX5_SET(query_esw_functions_in, in, opcode,
MLX5_CMD_OP_QUERY_ESW_FUNCTIONS);
err = mlx5_cmd_exec(dev, in, sizeof(in), out, outlen);
if (!err)
return out;
kvfree(out);
return ERR_PTR(err);
}
static void mlx5_eswitch_event_handlers_register(struct mlx5_eswitch *esw)
{
MLX5_NB_INIT(&esw->nb, eswitch_vport_event, NIC_VPORT_CHANGE);
mlx5_eq_notifier_register(esw->dev, &esw->nb);
if (esw->mode == MLX5_ESWITCH_OFFLOADS && mlx5_eswitch_is_funcs_handler(esw->dev)) {
MLX5_NB_INIT(&esw->esw_funcs.nb, mlx5_esw_funcs_changed_handler,
ESW_FUNCTIONS_CHANGED);
mlx5_eq_notifier_register(esw->dev, &esw->esw_funcs.nb);
}
}
static void mlx5_eswitch_event_handlers_unregister(struct mlx5_eswitch *esw)
{
if (esw->mode == MLX5_ESWITCH_OFFLOADS && mlx5_eswitch_is_funcs_handler(esw->dev))
mlx5_eq_notifier_unregister(esw->dev, &esw->esw_funcs.nb);
mlx5_eq_notifier_unregister(esw->dev, &esw->nb);
flush_workqueue(esw->work_queue);
}
static void mlx5_eswitch_clear_vf_vports_info(struct mlx5_eswitch *esw)
{
struct mlx5_vport *vport;
unsigned long i;
mlx5_esw_for_each_vf_vport(esw, i, vport, esw->esw_funcs.num_vfs) {
memset(&vport->qos, 0, sizeof(vport->qos));
memset(&vport->info, 0, sizeof(vport->info));
vport->info.link_state = MLX5_VPORT_ADMIN_STATE_AUTO;
}
}
/* Public E-Switch API */
int mlx5_eswitch_load_vport(struct mlx5_eswitch *esw, u16 vport_num,
enum mlx5_eswitch_vport_event enabled_events)
{
int err;
err = mlx5_esw_vport_enable(esw, vport_num, enabled_events);
if (err)
return err;
mlx5_esw_vport_debugfs_create(esw, vport_num, false, 0);
err = esw_offloads_load_rep(esw, vport_num);
if (err)
goto err_rep;
return err;
err_rep:
mlx5_esw_vport_debugfs_destroy(esw, vport_num);
mlx5_esw_vport_disable(esw, vport_num);
return err;
}
void mlx5_eswitch_unload_vport(struct mlx5_eswitch *esw, u16 vport_num)
{
esw_offloads_unload_rep(esw, vport_num);
mlx5_esw_vport_debugfs_destroy(esw, vport_num);
mlx5_esw_vport_disable(esw, vport_num);
}
void mlx5_eswitch_unload_vf_vports(struct mlx5_eswitch *esw, u16 num_vfs)
{
struct mlx5_vport *vport;
unsigned long i;
mlx5_esw_for_each_vf_vport(esw, i, vport, num_vfs) {
if (!vport->enabled)
continue;
mlx5_eswitch_unload_vport(esw, vport->vport);
}
}
int mlx5_eswitch_load_vf_vports(struct mlx5_eswitch *esw, u16 num_vfs,
enum mlx5_eswitch_vport_event enabled_events)
{
struct mlx5_vport *vport;
unsigned long i;
int err;
mlx5_esw_for_each_vf_vport(esw, i, vport, num_vfs) {
err = mlx5_eswitch_load_vport(esw, vport->vport, enabled_events);
if (err)
goto vf_err;
}
return 0;
vf_err:
mlx5_eswitch_unload_vf_vports(esw, num_vfs);
return err;
}
static int host_pf_enable_hca(struct mlx5_core_dev *dev)
{
if (!mlx5_core_is_ecpf(dev))
return 0;
/* Once vport and representor are ready, take out the external host PF
* out of initializing state. Enabling HCA clears the iser->initializing
* bit and host PF driver loading can progress.
*/
return mlx5_cmd_host_pf_enable_hca(dev);
}
static void host_pf_disable_hca(struct mlx5_core_dev *dev)
{
if (!mlx5_core_is_ecpf(dev))
return;
mlx5_cmd_host_pf_disable_hca(dev);
}
/* mlx5_eswitch_enable_pf_vf_vports() enables vports of PF, ECPF and VFs
* whichever are present on the eswitch.
*/
int
mlx5_eswitch_enable_pf_vf_vports(struct mlx5_eswitch *esw,
enum mlx5_eswitch_vport_event enabled_events)
{
int ret;
/* Enable PF vport */
ret = mlx5_eswitch_load_vport(esw, MLX5_VPORT_PF, enabled_events);
if (ret)
return ret;
/* Enable external host PF HCA */
ret = host_pf_enable_hca(esw->dev);
if (ret)
goto pf_hca_err;
/* Enable ECPF vport */
if (mlx5_ecpf_vport_exists(esw->dev)) {
ret = mlx5_eswitch_load_vport(esw, MLX5_VPORT_ECPF, enabled_events);
if (ret)
goto ecpf_err;
}
/* Enable VF vports */
ret = mlx5_eswitch_load_vf_vports(esw, esw->esw_funcs.num_vfs,
enabled_events);
if (ret)
goto vf_err;
return 0;
vf_err:
if (mlx5_ecpf_vport_exists(esw->dev))
mlx5_eswitch_unload_vport(esw, MLX5_VPORT_ECPF);
ecpf_err:
host_pf_disable_hca(esw->dev);
pf_hca_err:
mlx5_eswitch_unload_vport(esw, MLX5_VPORT_PF);
return ret;
}
/* mlx5_eswitch_disable_pf_vf_vports() disables vports of PF, ECPF and VFs
* whichever are previously enabled on the eswitch.
*/
void mlx5_eswitch_disable_pf_vf_vports(struct mlx5_eswitch *esw)
{
mlx5_eswitch_unload_vf_vports(esw, esw->esw_funcs.num_vfs);
if (mlx5_ecpf_vport_exists(esw->dev))
mlx5_eswitch_unload_vport(esw, MLX5_VPORT_ECPF);
host_pf_disable_hca(esw->dev);
mlx5_eswitch_unload_vport(esw, MLX5_VPORT_PF);
}
static void mlx5_eswitch_get_devlink_param(struct mlx5_eswitch *esw)
{
struct devlink *devlink = priv_to_devlink(esw->dev);
union devlink_param_value val;
int err;
err = devl_param_driverinit_value_get(devlink,
MLX5_DEVLINK_PARAM_ID_ESW_LARGE_GROUP_NUM,
&val);
if (!err) {
esw->params.large_group_num = val.vu32;
} else {
esw_warn(esw->dev,
"Devlink can't get param fdb_large_groups, uses default (%d).\n",
ESW_OFFLOADS_DEFAULT_NUM_GROUPS);
esw->params.large_group_num = ESW_OFFLOADS_DEFAULT_NUM_GROUPS;
}
}
static void
mlx5_eswitch_update_num_of_vfs(struct mlx5_eswitch *esw, int num_vfs)
{
const u32 *out;
if (num_vfs < 0)
return;
if (!mlx5_core_is_ecpf_esw_manager(esw->dev)) {
esw->esw_funcs.num_vfs = num_vfs;
return;
}
out = mlx5_esw_query_functions(esw->dev);
if (IS_ERR(out))
return;
esw->esw_funcs.num_vfs = MLX5_GET(query_esw_functions_out, out,
host_params_context.host_num_of_vfs);
kvfree(out);
}
static void mlx5_esw_mode_change_notify(struct mlx5_eswitch *esw, u16 mode)
{
struct mlx5_esw_event_info info = {};
info.new_mode = mode;
blocking_notifier_call_chain(&esw->n_head, 0, &info);
}
static int mlx5_esw_acls_ns_init(struct mlx5_eswitch *esw)
{
struct mlx5_core_dev *dev = esw->dev;
int total_vports;
int err;
if (esw->flags & MLX5_ESWITCH_VPORT_ACL_NS_CREATED)
return 0;
total_vports = mlx5_eswitch_get_total_vports(dev);
if (MLX5_CAP_ESW_EGRESS_ACL(dev, ft_support)) {
err = mlx5_fs_egress_acls_init(dev, total_vports);
if (err)
return err;
} else {
esw_warn(dev, "egress ACL is not supported by FW\n");
}
if (MLX5_CAP_ESW_INGRESS_ACL(dev, ft_support)) {
err = mlx5_fs_ingress_acls_init(dev, total_vports);
if (err)
goto err;
} else {
esw_warn(dev, "ingress ACL is not supported by FW\n");
}
esw->flags |= MLX5_ESWITCH_VPORT_ACL_NS_CREATED;
return 0;
err:
if (MLX5_CAP_ESW_EGRESS_ACL(dev, ft_support))
mlx5_fs_egress_acls_cleanup(dev);
return err;
}
static void mlx5_esw_acls_ns_cleanup(struct mlx5_eswitch *esw)
{
struct mlx5_core_dev *dev = esw->dev;
esw->flags &= ~MLX5_ESWITCH_VPORT_ACL_NS_CREATED;
if (MLX5_CAP_ESW_INGRESS_ACL(dev, ft_support))
mlx5_fs_ingress_acls_cleanup(dev);
if (MLX5_CAP_ESW_EGRESS_ACL(dev, ft_support))
mlx5_fs_egress_acls_cleanup(dev);
}
/**
* mlx5_eswitch_enable_locked - Enable eswitch
* @esw: Pointer to eswitch
* @num_vfs: Enable eswitch for given number of VFs. This is optional.
* Valid value are 0, > 0 and MLX5_ESWITCH_IGNORE_NUM_VFS.
* Caller should pass num_vfs > 0 when enabling eswitch for
* vf vports. Caller should pass num_vfs = 0, when eswitch
* is enabled without sriov VFs or when caller
* is unaware of the sriov state of the host PF on ECPF based
* eswitch. Caller should pass < 0 when num_vfs should be
* completely ignored. This is typically the case when eswitch
* is enabled without sriov regardless of PF/ECPF system.
* mlx5_eswitch_enable_locked() Enables eswitch in either legacy or offloads
* mode. If num_vfs >=0 is provided, it setup VF related eswitch vports.
* It returns 0 on success or error code on failure.
*/
int mlx5_eswitch_enable_locked(struct mlx5_eswitch *esw, int num_vfs)
{
int err;
lockdep_assert_held(&esw->mode_lock);
if (!MLX5_CAP_ESW_FLOWTABLE_FDB(esw->dev, ft_support)) {
esw_warn(esw->dev, "FDB is not supported, aborting ...\n");
return -EOPNOTSUPP;
}
mlx5_eswitch_get_devlink_param(esw);
err = mlx5_esw_acls_ns_init(esw);
if (err)
return err;
mlx5_eswitch_update_num_of_vfs(esw, num_vfs);
if (esw->mode == MLX5_ESWITCH_LEGACY) {
err = esw_legacy_enable(esw);
} else {
mlx5_rescan_drivers(esw->dev);
err = esw_offloads_enable(esw);
}
if (err)
goto abort;
esw->fdb_table.flags |= MLX5_ESW_FDB_CREATED;
mlx5_eswitch_event_handlers_register(esw);
esw_info(esw->dev, "Enable: mode(%s), nvfs(%d), active vports(%d)\n",
esw->mode == MLX5_ESWITCH_LEGACY ? "LEGACY" : "OFFLOADS",
esw->esw_funcs.num_vfs, esw->enabled_vports);
mlx5_esw_mode_change_notify(esw, esw->mode);
return 0;
abort:
mlx5_esw_acls_ns_cleanup(esw);
return err;
}
/**
* mlx5_eswitch_enable - Enable eswitch
* @esw: Pointer to eswitch
* @num_vfs: Enable eswitch switch for given number of VFs.
* Caller must pass num_vfs > 0 when enabling eswitch for
* vf vports.
* mlx5_eswitch_enable() returns 0 on success or error code on failure.
*/
int mlx5_eswitch_enable(struct mlx5_eswitch *esw, int num_vfs)
{
bool toggle_lag;
int ret;
if (!mlx5_esw_allowed(esw))
return 0;
devl_assert_locked(priv_to_devlink(esw->dev));
toggle_lag = !mlx5_esw_is_fdb_created(esw);
if (toggle_lag)
mlx5_lag_disable_change(esw->dev);
down_write(&esw->mode_lock);
if (!mlx5_esw_is_fdb_created(esw)) {
ret = mlx5_eswitch_enable_locked(esw, num_vfs);
} else {
enum mlx5_eswitch_vport_event vport_events;
vport_events = (esw->mode == MLX5_ESWITCH_LEGACY) ?
MLX5_LEGACY_SRIOV_VPORT_EVENTS : MLX5_VPORT_UC_ADDR_CHANGE;
ret = mlx5_eswitch_load_vf_vports(esw, num_vfs, vport_events);
if (!ret)
esw->esw_funcs.num_vfs = num_vfs;
}
up_write(&esw->mode_lock);
if (toggle_lag)
mlx5_lag_enable_change(esw->dev);
return ret;
}
/* When disabling sriov, free driver level resources. */
void mlx5_eswitch_disable_sriov(struct mlx5_eswitch *esw, bool clear_vf)
{
if (!mlx5_esw_allowed(esw))
return;
devl_assert_locked(priv_to_devlink(esw->dev));
down_write(&esw->mode_lock);
/* If driver is unloaded, this function is called twice by remove_one()
* and mlx5_unload(). Prevent the second call.
*/
if (!esw->esw_funcs.num_vfs && !clear_vf)
goto unlock;
esw_info(esw->dev, "Unload vfs: mode(%s), nvfs(%d), active vports(%d)\n",
esw->mode == MLX5_ESWITCH_LEGACY ? "LEGACY" : "OFFLOADS",
esw->esw_funcs.num_vfs, esw->enabled_vports);
mlx5_eswitch_unload_vf_vports(esw, esw->esw_funcs.num_vfs);
if (clear_vf)
mlx5_eswitch_clear_vf_vports_info(esw);
if (esw->mode == MLX5_ESWITCH_OFFLOADS) {
struct devlink *devlink = priv_to_devlink(esw->dev);
devl_rate_nodes_destroy(devlink);
}
/* Destroy legacy fdb when disabling sriov in legacy mode. */
if (esw->mode == MLX5_ESWITCH_LEGACY)
mlx5_eswitch_disable_locked(esw);
esw->esw_funcs.num_vfs = 0;
unlock:
up_write(&esw->mode_lock);
}
/* Free resources for corresponding eswitch mode. It is called by devlink
* when changing eswitch mode or modprobe when unloading driver.
*/
void mlx5_eswitch_disable_locked(struct mlx5_eswitch *esw)
{
struct devlink *devlink = priv_to_devlink(esw->dev);
/* Notify eswitch users that it is exiting from current mode.
* So that it can do necessary cleanup before the eswitch is disabled.
*/
mlx5_esw_mode_change_notify(esw, MLX5_ESWITCH_LEGACY);
mlx5_eswitch_event_handlers_unregister(esw);
esw_info(esw->dev, "Disable: mode(%s), nvfs(%d), active vports(%d)\n",
esw->mode == MLX5_ESWITCH_LEGACY ? "LEGACY" : "OFFLOADS",
esw->esw_funcs.num_vfs, esw->enabled_vports);
if (esw->fdb_table.flags & MLX5_ESW_FDB_CREATED) {
esw->fdb_table.flags &= ~MLX5_ESW_FDB_CREATED;
if (esw->mode == MLX5_ESWITCH_OFFLOADS)
esw_offloads_disable(esw);
else if (esw->mode == MLX5_ESWITCH_LEGACY)
esw_legacy_disable(esw);
mlx5_esw_acls_ns_cleanup(esw);
}
if (esw->mode == MLX5_ESWITCH_OFFLOADS)
devl_rate_nodes_destroy(devlink);
}
void mlx5_eswitch_disable(struct mlx5_eswitch *esw)
{
if (!mlx5_esw_allowed(esw))
return;
devl_assert_locked(priv_to_devlink(esw->dev));
mlx5_lag_disable_change(esw->dev);
down_write(&esw->mode_lock);
mlx5_eswitch_disable_locked(esw);
esw->mode = MLX5_ESWITCH_LEGACY;
up_write(&esw->mode_lock);
mlx5_lag_enable_change(esw->dev);
}
static int mlx5_query_hca_cap_host_pf(struct mlx5_core_dev *dev, void *out)
{
u16 opmod = (MLX5_CAP_GENERAL << 1) | (HCA_CAP_OPMOD_GET_MAX & 0x01);
u8 in[MLX5_ST_SZ_BYTES(query_hca_cap_in)] = {};
MLX5_SET(query_hca_cap_in, in, opcode, MLX5_CMD_OP_QUERY_HCA_CAP);
MLX5_SET(query_hca_cap_in, in, op_mod, opmod);
MLX5_SET(query_hca_cap_in, in, function_id, MLX5_VPORT_PF);
MLX5_SET(query_hca_cap_in, in, other_function, true);
return mlx5_cmd_exec_inout(dev, query_hca_cap, in, out);
}
int mlx5_esw_sf_max_hpf_functions(struct mlx5_core_dev *dev, u16 *max_sfs, u16 *sf_base_id)
{
int query_out_sz = MLX5_ST_SZ_BYTES(query_hca_cap_out);
void *query_ctx;
void *hca_caps;
int err;
if (!mlx5_core_is_ecpf(dev) || mlx5_core_is_management_pf(dev)) {
*max_sfs = 0;
return 0;
}
query_ctx = kzalloc(query_out_sz, GFP_KERNEL);
if (!query_ctx)
return -ENOMEM;
err = mlx5_query_hca_cap_host_pf(dev, query_ctx);
if (err)
goto out_free;
hca_caps = MLX5_ADDR_OF(query_hca_cap_out, query_ctx, capability);
*max_sfs = MLX5_GET(cmd_hca_cap, hca_caps, max_num_sf);
*sf_base_id = MLX5_GET(cmd_hca_cap, hca_caps, sf_base_id);
out_free:
kfree(query_ctx);
return err;
}
static int mlx5_esw_vport_alloc(struct mlx5_eswitch *esw, struct mlx5_core_dev *dev,
int index, u16 vport_num)
{
struct mlx5_vport *vport;
int err;
vport = kzalloc(sizeof(*vport), GFP_KERNEL);
if (!vport)
return -ENOMEM;
vport->dev = esw->dev;
vport->vport = vport_num;
vport->index = index;
vport->info.link_state = MLX5_VPORT_ADMIN_STATE_AUTO;
INIT_WORK(&vport->vport_change_handler, esw_vport_change_handler);
err = xa_insert(&esw->vports, vport_num, vport, GFP_KERNEL);
if (err)
goto insert_err;
esw->total_vports++;
return 0;
insert_err:
kfree(vport);
return err;
}
static void mlx5_esw_vport_free(struct mlx5_eswitch *esw, struct mlx5_vport *vport)
{
xa_erase(&esw->vports, vport->vport);
kfree(vport);
}
static void mlx5_esw_vports_cleanup(struct mlx5_eswitch *esw)
{
struct mlx5_vport *vport;
unsigned long i;
mlx5_esw_for_each_vport(esw, i, vport)
mlx5_esw_vport_free(esw, vport);
xa_destroy(&esw->vports);
}
static int mlx5_esw_vports_init(struct mlx5_eswitch *esw)
{
struct mlx5_core_dev *dev = esw->dev;
u16 max_host_pf_sfs;
u16 base_sf_num;
int idx = 0;
int err;
int i;
xa_init(&esw->vports);
err = mlx5_esw_vport_alloc(esw, dev, idx, MLX5_VPORT_PF);
if (err)
goto err;
if (esw->first_host_vport == MLX5_VPORT_PF)
xa_set_mark(&esw->vports, idx, MLX5_ESW_VPT_HOST_FN);
idx++;
for (i = 0; i < mlx5_core_max_vfs(dev); i++) {
err = mlx5_esw_vport_alloc(esw, dev, idx, idx);
if (err)
goto err;
xa_set_mark(&esw->vports, idx, MLX5_ESW_VPT_VF);
xa_set_mark(&esw->vports, idx, MLX5_ESW_VPT_HOST_FN);
idx++;
}
base_sf_num = mlx5_sf_start_function_id(dev);
for (i = 0; i < mlx5_sf_max_functions(dev); i++) {
err = mlx5_esw_vport_alloc(esw, dev, idx, base_sf_num + i);
if (err)
goto err;
xa_set_mark(&esw->vports, base_sf_num + i, MLX5_ESW_VPT_SF);
idx++;
}
err = mlx5_esw_sf_max_hpf_functions(dev, &max_host_pf_sfs, &base_sf_num);
if (err)
goto err;
for (i = 0; i < max_host_pf_sfs; i++) {
err = mlx5_esw_vport_alloc(esw, dev, idx, base_sf_num + i);
if (err)
goto err;
xa_set_mark(&esw->vports, base_sf_num + i, MLX5_ESW_VPT_SF);
idx++;
}
if (mlx5_ecpf_vport_exists(dev)) {
err = mlx5_esw_vport_alloc(esw, dev, idx, MLX5_VPORT_ECPF);
if (err)
goto err;
idx++;
}
err = mlx5_esw_vport_alloc(esw, dev, idx, MLX5_VPORT_UPLINK);
if (err)
goto err;
return 0;
err:
mlx5_esw_vports_cleanup(esw);
return err;
}
int mlx5_eswitch_init(struct mlx5_core_dev *dev)
{
struct mlx5_eswitch *esw;
int err;
if (!MLX5_VPORT_MANAGER(dev))
return 0;
esw = kzalloc(sizeof(*esw), GFP_KERNEL);
if (!esw)
return -ENOMEM;
esw->dev = dev;
esw->manager_vport = mlx5_eswitch_manager_vport(dev);
esw->first_host_vport = mlx5_eswitch_first_host_vport_num(dev);
esw->work_queue = create_singlethread_workqueue("mlx5_esw_wq");
if (!esw->work_queue) {
err = -ENOMEM;
goto abort;
}
err = mlx5_esw_vports_init(esw);
if (err)
goto abort;
err = esw_offloads_init(esw);
if (err)
goto reps_err;
mutex_init(&esw->offloads.encap_tbl_lock);
hash_init(esw->offloads.encap_tbl);
mutex_init(&esw->offloads.decap_tbl_lock);
hash_init(esw->offloads.decap_tbl);
mlx5e_mod_hdr_tbl_init(&esw->offloads.mod_hdr);
atomic64_set(&esw->offloads.num_flows, 0);
ida_init(&esw->offloads.vport_metadata_ida);
xa_init_flags(&esw->offloads.vhca_map, XA_FLAGS_ALLOC);
mutex_init(&esw->state_lock);
init_rwsem(&esw->mode_lock);
refcount_set(&esw->qos.refcnt, 0);
esw->enabled_vports = 0;
esw->mode = MLX5_ESWITCH_LEGACY;
esw->offloads.inline_mode = MLX5_INLINE_MODE_NONE;
if (MLX5_CAP_ESW_FLOWTABLE_FDB(dev, reformat) &&
MLX5_CAP_ESW_FLOWTABLE_FDB(dev, decap))
esw->offloads.encap = DEVLINK_ESWITCH_ENCAP_MODE_BASIC;
else
esw->offloads.encap = DEVLINK_ESWITCH_ENCAP_MODE_NONE;
if (MLX5_ESWITCH_MANAGER(dev) &&
mlx5_esw_vport_match_metadata_supported(esw))
esw->flags |= MLX5_ESWITCH_VPORT_MATCH_METADATA;
dev->priv.eswitch = esw;
BLOCKING_INIT_NOTIFIER_HEAD(&esw->n_head);
esw->dbgfs = debugfs_create_dir("esw", mlx5_debugfs_get_dev_root(esw->dev));
esw_info(dev,
"Total vports %d, per vport: max uc(%d) max mc(%d)\n",
esw->total_vports,
MLX5_MAX_UC_PER_VPORT(dev),
MLX5_MAX_MC_PER_VPORT(dev));
return 0;
reps_err:
mlx5_esw_vports_cleanup(esw);
abort:
if (esw->work_queue)
destroy_workqueue(esw->work_queue);
kfree(esw);
return err;
}
void mlx5_eswitch_cleanup(struct mlx5_eswitch *esw)
{
if (!esw || !MLX5_VPORT_MANAGER(esw->dev))
return;
esw_info(esw->dev, "cleanup\n");
debugfs_remove_recursive(esw->dbgfs);
esw->dev->priv.eswitch = NULL;
destroy_workqueue(esw->work_queue);
WARN_ON(refcount_read(&esw->qos.refcnt));
mutex_destroy(&esw->state_lock);
WARN_ON(!xa_empty(&esw->offloads.vhca_map));
xa_destroy(&esw->offloads.vhca_map);
ida_destroy(&esw->offloads.vport_metadata_ida);
mlx5e_mod_hdr_tbl_destroy(&esw->offloads.mod_hdr);
mutex_destroy(&esw->offloads.encap_tbl_lock);
mutex_destroy(&esw->offloads.decap_tbl_lock);
esw_offloads_cleanup(esw);
mlx5_esw_vports_cleanup(esw);
kfree(esw);
}
/* Vport Administration */
static int
mlx5_esw_set_vport_mac_locked(struct mlx5_eswitch *esw,
struct mlx5_vport *evport, const u8 *mac)
{
u16 vport_num = evport->vport;
u64 node_guid;
int err = 0;
if (is_multicast_ether_addr(mac))
return -EINVAL;
if (evport->info.spoofchk && !is_valid_ether_addr(mac))
mlx5_core_warn(esw->dev,
"Set invalid MAC while spoofchk is on, vport(%d)\n",
vport_num);
err = mlx5_modify_nic_vport_mac_address(esw->dev, vport_num, mac);
if (err) {
mlx5_core_warn(esw->dev,
"Failed to mlx5_modify_nic_vport_mac vport(%d) err=(%d)\n",
vport_num, err);
return err;
}
node_guid_gen_from_mac(&node_guid, mac);
err = mlx5_modify_nic_vport_node_guid(esw->dev, vport_num, node_guid);
if (err)
mlx5_core_warn(esw->dev,
"Failed to set vport %d node guid, err = %d. RDMA_CM will not function properly for this VF.\n",
vport_num, err);
ether_addr_copy(evport->info.mac, mac);
evport->info.node_guid = node_guid;
if (evport->enabled && esw->mode == MLX5_ESWITCH_LEGACY)
err = esw_acl_ingress_lgcy_setup(esw, evport);
return err;
}
int mlx5_eswitch_set_vport_mac(struct mlx5_eswitch *esw,
u16 vport, const u8 *mac)
{
struct mlx5_vport *evport = mlx5_eswitch_get_vport(esw, vport);
int err = 0;
if (IS_ERR(evport))
return PTR_ERR(evport);
mutex_lock(&esw->state_lock);
err = mlx5_esw_set_vport_mac_locked(esw, evport, mac);
mutex_unlock(&esw->state_lock);
return err;
}
static bool mlx5_esw_check_port_type(struct mlx5_eswitch *esw, u16 vport_num, xa_mark_t mark)
{
struct mlx5_vport *vport;
vport = mlx5_eswitch_get_vport(esw, vport_num);
if (IS_ERR(vport))
return false;
return xa_get_mark(&esw->vports, vport_num, mark);
}
bool mlx5_eswitch_is_vf_vport(struct mlx5_eswitch *esw, u16 vport_num)
{
return mlx5_esw_check_port_type(esw, vport_num, MLX5_ESW_VPT_VF);
}
bool mlx5_esw_is_sf_vport(struct mlx5_eswitch *esw, u16 vport_num)
{
return mlx5_esw_check_port_type(esw, vport_num, MLX5_ESW_VPT_SF);
}
int mlx5_eswitch_set_vport_state(struct mlx5_eswitch *esw,
u16 vport, int link_state)
{
struct mlx5_vport *evport = mlx5_eswitch_get_vport(esw, vport);
int opmod = MLX5_VPORT_STATE_OP_MOD_ESW_VPORT;
int other_vport = 1;
int err = 0;
if (!mlx5_esw_allowed(esw))
return -EPERM;
if (IS_ERR(evport))
return PTR_ERR(evport);
if (vport == MLX5_VPORT_UPLINK) {
opmod = MLX5_VPORT_STATE_OP_MOD_UPLINK;
other_vport = 0;
vport = 0;
}
mutex_lock(&esw->state_lock);
if (esw->mode != MLX5_ESWITCH_LEGACY) {
err = -EOPNOTSUPP;
goto unlock;
}
err = mlx5_modify_vport_admin_state(esw->dev, opmod, vport, other_vport, link_state);
if (err) {
mlx5_core_warn(esw->dev, "Failed to set vport %d link state, opmod = %d, err = %d",
vport, opmod, err);
goto unlock;
}
evport->info.link_state = link_state;
unlock:
mutex_unlock(&esw->state_lock);
return err;
}
int mlx5_eswitch_get_vport_config(struct mlx5_eswitch *esw,
u16 vport, struct ifla_vf_info *ivi)
{
struct mlx5_vport *evport = mlx5_eswitch_get_vport(esw, vport);
if (IS_ERR(evport))
return PTR_ERR(evport);
memset(ivi, 0, sizeof(*ivi));
ivi->vf = vport - 1;
mutex_lock(&esw->state_lock);
ether_addr_copy(ivi->mac, evport->info.mac);
ivi->linkstate = evport->info.link_state;
ivi->vlan = evport->info.vlan;
ivi->qos = evport->info.qos;
ivi->spoofchk = evport->info.spoofchk;
ivi->trusted = evport->info.trusted;
if (evport->qos.enabled) {
ivi->min_tx_rate = evport->qos.min_rate;
ivi->max_tx_rate = evport->qos.max_rate;
}
mutex_unlock(&esw->state_lock);
return 0;
}
int __mlx5_eswitch_set_vport_vlan(struct mlx5_eswitch *esw,
u16 vport, u16 vlan, u8 qos, u8 set_flags)
{
struct mlx5_vport *evport = mlx5_eswitch_get_vport(esw, vport);
bool vst_mode_steering = esw_vst_mode_is_steering(esw);
int err = 0;
if (IS_ERR(evport))
return PTR_ERR(evport);
if (vlan > 4095 || qos > 7)
return -EINVAL;
if (esw->mode == MLX5_ESWITCH_OFFLOADS || !vst_mode_steering) {
err = modify_esw_vport_cvlan(esw->dev, vport, vlan, qos, set_flags);
if (err)
return err;
}
evport->info.vlan = vlan;
evport->info.qos = qos;
if (evport->enabled && esw->mode == MLX5_ESWITCH_LEGACY) {
err = esw_acl_ingress_lgcy_setup(esw, evport);
if (err)
return err;
err = esw_acl_egress_lgcy_setup(esw, evport);
}
return err;
}
int mlx5_eswitch_get_vport_stats(struct mlx5_eswitch *esw,
u16 vport_num,
struct ifla_vf_stats *vf_stats)
{
struct mlx5_vport *vport = mlx5_eswitch_get_vport(esw, vport_num);
int outlen = MLX5_ST_SZ_BYTES(query_vport_counter_out);
u32 in[MLX5_ST_SZ_DW(query_vport_counter_in)] = {};
struct mlx5_vport_drop_stats stats = {};
int err = 0;
u32 *out;
if (IS_ERR(vport))
return PTR_ERR(vport);
out = kvzalloc(outlen, GFP_KERNEL);
if (!out)
return -ENOMEM;
MLX5_SET(query_vport_counter_in, in, opcode,
MLX5_CMD_OP_QUERY_VPORT_COUNTER);
MLX5_SET(query_vport_counter_in, in, op_mod, 0);
MLX5_SET(query_vport_counter_in, in, vport_number, vport->vport);
MLX5_SET(query_vport_counter_in, in, other_vport, 1);
err = mlx5_cmd_exec_inout(esw->dev, query_vport_counter, in, out);
if (err)
goto free_out;
#define MLX5_GET_CTR(p, x) \
MLX5_GET64(query_vport_counter_out, p, x)
memset(vf_stats, 0, sizeof(*vf_stats));
vf_stats->rx_packets =
MLX5_GET_CTR(out, received_eth_unicast.packets) +
MLX5_GET_CTR(out, received_ib_unicast.packets) +
MLX5_GET_CTR(out, received_eth_multicast.packets) +
MLX5_GET_CTR(out, received_ib_multicast.packets) +
MLX5_GET_CTR(out, received_eth_broadcast.packets);
vf_stats->rx_bytes =
MLX5_GET_CTR(out, received_eth_unicast.octets) +
MLX5_GET_CTR(out, received_ib_unicast.octets) +
MLX5_GET_CTR(out, received_eth_multicast.octets) +
MLX5_GET_CTR(out, received_ib_multicast.octets) +
MLX5_GET_CTR(out, received_eth_broadcast.octets);
vf_stats->tx_packets =
MLX5_GET_CTR(out, transmitted_eth_unicast.packets) +
MLX5_GET_CTR(out, transmitted_ib_unicast.packets) +
MLX5_GET_CTR(out, transmitted_eth_multicast.packets) +
MLX5_GET_CTR(out, transmitted_ib_multicast.packets) +
MLX5_GET_CTR(out, transmitted_eth_broadcast.packets);
vf_stats->tx_bytes =
MLX5_GET_CTR(out, transmitted_eth_unicast.octets) +
MLX5_GET_CTR(out, transmitted_ib_unicast.octets) +
MLX5_GET_CTR(out, transmitted_eth_multicast.octets) +
MLX5_GET_CTR(out, transmitted_ib_multicast.octets) +
MLX5_GET_CTR(out, transmitted_eth_broadcast.octets);
vf_stats->multicast =
MLX5_GET_CTR(out, received_eth_multicast.packets) +
MLX5_GET_CTR(out, received_ib_multicast.packets);
vf_stats->broadcast =
MLX5_GET_CTR(out, received_eth_broadcast.packets);
err = mlx5_esw_query_vport_drop_stats(esw->dev, vport, &stats);
if (err)
goto free_out;
vf_stats->rx_dropped = stats.rx_dropped;
vf_stats->tx_dropped = stats.tx_dropped;
free_out:
kvfree(out);
return err;
}
u8 mlx5_eswitch_mode(const struct mlx5_core_dev *dev)
{
struct mlx5_eswitch *esw = dev->priv.eswitch;
return mlx5_esw_allowed(esw) ? esw->mode : MLX5_ESWITCH_LEGACY;
}
EXPORT_SYMBOL_GPL(mlx5_eswitch_mode);
enum devlink_eswitch_encap_mode
mlx5_eswitch_get_encap_mode(const struct mlx5_core_dev *dev)
{
struct mlx5_eswitch *esw;
esw = dev->priv.eswitch;
return (mlx5_eswitch_mode(dev) == MLX5_ESWITCH_OFFLOADS) ? esw->offloads.encap :
DEVLINK_ESWITCH_ENCAP_MODE_NONE;
}
EXPORT_SYMBOL(mlx5_eswitch_get_encap_mode);
bool mlx5_esw_multipath_prereq(struct mlx5_core_dev *dev0,
struct mlx5_core_dev *dev1)
{
return (dev0->priv.eswitch->mode == MLX5_ESWITCH_OFFLOADS &&
dev1->priv.eswitch->mode == MLX5_ESWITCH_OFFLOADS);
}
int mlx5_esw_event_notifier_register(struct mlx5_eswitch *esw, struct notifier_block *nb)
{
return blocking_notifier_chain_register(&esw->n_head, nb);
}
void mlx5_esw_event_notifier_unregister(struct mlx5_eswitch *esw, struct notifier_block *nb)
{
blocking_notifier_chain_unregister(&esw->n_head, nb);
}
/**
* mlx5_esw_hold() - Try to take a read lock on esw mode lock.
* @mdev: mlx5 core device.
*
* Should be called by esw resources callers.
*
* Return: true on success or false.
*/
bool mlx5_esw_hold(struct mlx5_core_dev *mdev)
{
struct mlx5_eswitch *esw = mdev->priv.eswitch;
/* e.g. VF doesn't have eswitch so nothing to do */
if (!mlx5_esw_allowed(esw))
return true;
if (down_read_trylock(&esw->mode_lock) != 0)
return true;
return false;
}
/**
* mlx5_esw_release() - Release a read lock on esw mode lock.
* @mdev: mlx5 core device.
*/
void mlx5_esw_release(struct mlx5_core_dev *mdev)
{
struct mlx5_eswitch *esw = mdev->priv.eswitch;
if (mlx5_esw_allowed(esw))
up_read(&esw->mode_lock);
}
/**
* mlx5_esw_get() - Increase esw user count.
* @mdev: mlx5 core device.
*/
void mlx5_esw_get(struct mlx5_core_dev *mdev)
{
struct mlx5_eswitch *esw = mdev->priv.eswitch;
if (mlx5_esw_allowed(esw))
atomic64_inc(&esw->user_count);
}
/**
* mlx5_esw_put() - Decrease esw user count.
* @mdev: mlx5 core device.
*/
void mlx5_esw_put(struct mlx5_core_dev *mdev)
{
struct mlx5_eswitch *esw = mdev->priv.eswitch;
if (mlx5_esw_allowed(esw))
atomic64_dec_if_positive(&esw->user_count);
}
/**
* mlx5_esw_try_lock() - Take a write lock on esw mode lock.
* @esw: eswitch device.
*
* Should be called by esw mode change routine.
*
* Return:
* * 0 - esw mode if successfully locked and refcount is 0.
* * -EBUSY - refcount is not 0.
* * -EINVAL - In the middle of switching mode or lock is already held.
*/
int mlx5_esw_try_lock(struct mlx5_eswitch *esw)
{
if (down_write_trylock(&esw->mode_lock) == 0)
return -EINVAL;
if (atomic64_read(&esw->user_count) > 0) {
up_write(&esw->mode_lock);
return -EBUSY;
}
return esw->mode;
}
/**
* mlx5_esw_unlock() - Release write lock on esw mode lock
* @esw: eswitch device.
*/
void mlx5_esw_unlock(struct mlx5_eswitch *esw)
{
up_write(&esw->mode_lock);
}
/**
* mlx5_eswitch_get_total_vports - Get total vports of the eswitch
*
* @dev: Pointer to core device
*
* mlx5_eswitch_get_total_vports returns total number of eswitch vports.
*/
u16 mlx5_eswitch_get_total_vports(const struct mlx5_core_dev *dev)
{
struct mlx5_eswitch *esw;
esw = dev->priv.eswitch;
return mlx5_esw_allowed(esw) ? esw->total_vports : 0;
}
EXPORT_SYMBOL_GPL(mlx5_eswitch_get_total_vports);
/**
* mlx5_eswitch_get_core_dev - Get the mdev device
* @esw : eswitch device.
*
* Return the mellanox core device which manages the eswitch.
*/
struct mlx5_core_dev *mlx5_eswitch_get_core_dev(struct mlx5_eswitch *esw)
{
return mlx5_esw_allowed(esw) ? esw->dev : NULL;
}
EXPORT_SYMBOL(mlx5_eswitch_get_core_dev);