blob: 4f5b0d47d5f38237129a7c90a1240b8615615d32 [file] [log] [blame]
/*
* Copyright (c) 2016, 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 "mlx5_core.h"
#include "eswitch.h"
enum {
FDB_FAST_PATH = 0,
FDB_SLOW_PATH
};
struct mlx5_flow_handle *
mlx5_eswitch_add_offloaded_rule(struct mlx5_eswitch *esw,
struct mlx5_flow_spec *spec,
struct mlx5_esw_flow_attr *attr)
{
struct mlx5_flow_destination dest[2] = {};
struct mlx5_flow_act flow_act = {0};
struct mlx5_fc *counter = NULL;
struct mlx5_flow_handle *rule;
void *misc;
int i = 0;
if (esw->mode != SRIOV_OFFLOADS)
return ERR_PTR(-EOPNOTSUPP);
/* per flow vlan pop/push is emulated, don't set that into the firmware */
flow_act.action = attr->action & ~(MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH | MLX5_FLOW_CONTEXT_ACTION_VLAN_POP);
if (flow_act.action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) {
dest[i].type = MLX5_FLOW_DESTINATION_TYPE_VPORT;
dest[i].vport_num = attr->out_rep->vport;
i++;
}
if (flow_act.action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
counter = mlx5_fc_create(esw->dev, true);
if (IS_ERR(counter))
return ERR_CAST(counter);
dest[i].type = MLX5_FLOW_DESTINATION_TYPE_COUNTER;
dest[i].counter = counter;
i++;
}
misc = MLX5_ADDR_OF(fte_match_param, spec->match_value, misc_parameters);
MLX5_SET(fte_match_set_misc, misc, source_port, attr->in_rep->vport);
misc = MLX5_ADDR_OF(fte_match_param, spec->match_criteria, misc_parameters);
MLX5_SET_TO_ONES(fte_match_set_misc, misc, source_port);
spec->match_criteria_enable = MLX5_MATCH_OUTER_HEADERS |
MLX5_MATCH_MISC_PARAMETERS;
if (flow_act.action & MLX5_FLOW_CONTEXT_ACTION_DECAP)
spec->match_criteria_enable |= MLX5_MATCH_INNER_HEADERS;
if (attr->encap)
flow_act.encap_id = attr->encap->encap_id;
rule = mlx5_add_flow_rules((struct mlx5_flow_table *)esw->fdb_table.fdb,
spec, &flow_act, dest, i);
if (IS_ERR(rule))
mlx5_fc_destroy(esw->dev, counter);
return rule;
}
static int esw_set_global_vlan_pop(struct mlx5_eswitch *esw, u8 val)
{
struct mlx5_eswitch_rep *rep;
int vf_vport, err = 0;
esw_debug(esw->dev, "%s applying global %s policy\n", __func__, val ? "pop" : "none");
for (vf_vport = 1; vf_vport < esw->enabled_vports; vf_vport++) {
rep = &esw->offloads.vport_reps[vf_vport];
if (!rep->valid)
continue;
err = __mlx5_eswitch_set_vport_vlan(esw, rep->vport, 0, 0, val);
if (err)
goto out;
}
out:
return err;
}
static struct mlx5_eswitch_rep *
esw_vlan_action_get_vport(struct mlx5_esw_flow_attr *attr, bool push, bool pop)
{
struct mlx5_eswitch_rep *in_rep, *out_rep, *vport = NULL;
in_rep = attr->in_rep;
out_rep = attr->out_rep;
if (push)
vport = in_rep;
else if (pop)
vport = out_rep;
else
vport = in_rep;
return vport;
}
static int esw_add_vlan_action_check(struct mlx5_esw_flow_attr *attr,
bool push, bool pop, bool fwd)
{
struct mlx5_eswitch_rep *in_rep, *out_rep;
if ((push || pop) && !fwd)
goto out_notsupp;
in_rep = attr->in_rep;
out_rep = attr->out_rep;
if (push && in_rep->vport == FDB_UPLINK_VPORT)
goto out_notsupp;
if (pop && out_rep->vport == FDB_UPLINK_VPORT)
goto out_notsupp;
/* vport has vlan push configured, can't offload VF --> wire rules w.o it */
if (!push && !pop && fwd)
if (in_rep->vlan && out_rep->vport == FDB_UPLINK_VPORT)
goto out_notsupp;
/* protects against (1) setting rules with different vlans to push and
* (2) setting rules w.o vlans (attr->vlan = 0) && w. vlans to push (!= 0)
*/
if (push && in_rep->vlan_refcount && (in_rep->vlan != attr->vlan))
goto out_notsupp;
return 0;
out_notsupp:
return -EOPNOTSUPP;
}
int mlx5_eswitch_add_vlan_action(struct mlx5_eswitch *esw,
struct mlx5_esw_flow_attr *attr)
{
struct offloads_fdb *offloads = &esw->fdb_table.offloads;
struct mlx5_eswitch_rep *vport = NULL;
bool push, pop, fwd;
int err = 0;
push = !!(attr->action & MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH);
pop = !!(attr->action & MLX5_FLOW_CONTEXT_ACTION_VLAN_POP);
fwd = !!(attr->action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST);
err = esw_add_vlan_action_check(attr, push, pop, fwd);
if (err)
return err;
attr->vlan_handled = false;
vport = esw_vlan_action_get_vport(attr, push, pop);
if (!push && !pop && fwd) {
/* tracks VF --> wire rules without vlan push action */
if (attr->out_rep->vport == FDB_UPLINK_VPORT) {
vport->vlan_refcount++;
attr->vlan_handled = true;
}
return 0;
}
if (!push && !pop)
return 0;
if (!(offloads->vlan_push_pop_refcount)) {
/* it's the 1st vlan rule, apply global vlan pop policy */
err = esw_set_global_vlan_pop(esw, SET_VLAN_STRIP);
if (err)
goto out;
}
offloads->vlan_push_pop_refcount++;
if (push) {
if (vport->vlan_refcount)
goto skip_set_push;
err = __mlx5_eswitch_set_vport_vlan(esw, vport->vport, attr->vlan, 0,
SET_VLAN_INSERT | SET_VLAN_STRIP);
if (err)
goto out;
vport->vlan = attr->vlan;
skip_set_push:
vport->vlan_refcount++;
}
out:
if (!err)
attr->vlan_handled = true;
return err;
}
int mlx5_eswitch_del_vlan_action(struct mlx5_eswitch *esw,
struct mlx5_esw_flow_attr *attr)
{
struct offloads_fdb *offloads = &esw->fdb_table.offloads;
struct mlx5_eswitch_rep *vport = NULL;
bool push, pop, fwd;
int err = 0;
if (!attr->vlan_handled)
return 0;
push = !!(attr->action & MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH);
pop = !!(attr->action & MLX5_FLOW_CONTEXT_ACTION_VLAN_POP);
fwd = !!(attr->action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST);
vport = esw_vlan_action_get_vport(attr, push, pop);
if (!push && !pop && fwd) {
/* tracks VF --> wire rules without vlan push action */
if (attr->out_rep->vport == FDB_UPLINK_VPORT)
vport->vlan_refcount--;
return 0;
}
if (push) {
vport->vlan_refcount--;
if (vport->vlan_refcount)
goto skip_unset_push;
vport->vlan = 0;
err = __mlx5_eswitch_set_vport_vlan(esw, vport->vport,
0, 0, SET_VLAN_STRIP);
if (err)
goto out;
}
skip_unset_push:
offloads->vlan_push_pop_refcount--;
if (offloads->vlan_push_pop_refcount)
return 0;
/* no more vlan rules, stop global vlan pop policy */
err = esw_set_global_vlan_pop(esw, 0);
out:
return err;
}
static struct mlx5_flow_handle *
mlx5_eswitch_add_send_to_vport_rule(struct mlx5_eswitch *esw, int vport, u32 sqn)
{
struct mlx5_flow_act flow_act = {0};
struct mlx5_flow_destination dest;
struct mlx5_flow_handle *flow_rule;
struct mlx5_flow_spec *spec;
void *misc;
spec = mlx5_vzalloc(sizeof(*spec));
if (!spec) {
esw_warn(esw->dev, "FDB: Failed to alloc match parameters\n");
flow_rule = ERR_PTR(-ENOMEM);
goto out;
}
misc = MLX5_ADDR_OF(fte_match_param, spec->match_value, misc_parameters);
MLX5_SET(fte_match_set_misc, misc, source_sqn, sqn);
MLX5_SET(fte_match_set_misc, misc, source_port, 0x0); /* source vport is 0 */
misc = MLX5_ADDR_OF(fte_match_param, spec->match_criteria, misc_parameters);
MLX5_SET_TO_ONES(fte_match_set_misc, misc, source_sqn);
MLX5_SET_TO_ONES(fte_match_set_misc, misc, source_port);
spec->match_criteria_enable = MLX5_MATCH_MISC_PARAMETERS;
dest.type = MLX5_FLOW_DESTINATION_TYPE_VPORT;
dest.vport_num = vport;
flow_act.action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
flow_rule = mlx5_add_flow_rules(esw->fdb_table.offloads.fdb, spec,
&flow_act, &dest, 1);
if (IS_ERR(flow_rule))
esw_warn(esw->dev, "FDB: Failed to add send to vport rule err %ld\n", PTR_ERR(flow_rule));
out:
kvfree(spec);
return flow_rule;
}
void mlx5_eswitch_sqs2vport_stop(struct mlx5_eswitch *esw,
struct mlx5_eswitch_rep *rep)
{
struct mlx5_esw_sq *esw_sq, *tmp;
if (esw->mode != SRIOV_OFFLOADS)
return;
list_for_each_entry_safe(esw_sq, tmp, &rep->vport_sqs_list, list) {
mlx5_del_flow_rules(esw_sq->send_to_vport_rule);
list_del(&esw_sq->list);
kfree(esw_sq);
}
}
int mlx5_eswitch_sqs2vport_start(struct mlx5_eswitch *esw,
struct mlx5_eswitch_rep *rep,
u16 *sqns_array, int sqns_num)
{
struct mlx5_flow_handle *flow_rule;
struct mlx5_esw_sq *esw_sq;
int err;
int i;
if (esw->mode != SRIOV_OFFLOADS)
return 0;
for (i = 0; i < sqns_num; i++) {
esw_sq = kzalloc(sizeof(*esw_sq), GFP_KERNEL);
if (!esw_sq) {
err = -ENOMEM;
goto out_err;
}
/* Add re-inject rule to the PF/representor sqs */
flow_rule = mlx5_eswitch_add_send_to_vport_rule(esw,
rep->vport,
sqns_array[i]);
if (IS_ERR(flow_rule)) {
err = PTR_ERR(flow_rule);
kfree(esw_sq);
goto out_err;
}
esw_sq->send_to_vport_rule = flow_rule;
list_add(&esw_sq->list, &rep->vport_sqs_list);
}
return 0;
out_err:
mlx5_eswitch_sqs2vport_stop(esw, rep);
return err;
}
static int esw_add_fdb_miss_rule(struct mlx5_eswitch *esw)
{
struct mlx5_flow_act flow_act = {0};
struct mlx5_flow_destination dest;
struct mlx5_flow_handle *flow_rule = NULL;
struct mlx5_flow_spec *spec;
int err = 0;
spec = mlx5_vzalloc(sizeof(*spec));
if (!spec) {
esw_warn(esw->dev, "FDB: Failed to alloc match parameters\n");
err = -ENOMEM;
goto out;
}
dest.type = MLX5_FLOW_DESTINATION_TYPE_VPORT;
dest.vport_num = 0;
flow_act.action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
flow_rule = mlx5_add_flow_rules(esw->fdb_table.offloads.fdb, spec,
&flow_act, &dest, 1);
if (IS_ERR(flow_rule)) {
err = PTR_ERR(flow_rule);
esw_warn(esw->dev, "FDB: Failed to add miss flow rule err %d\n", err);
goto out;
}
esw->fdb_table.offloads.miss_rule = flow_rule;
out:
kvfree(spec);
return err;
}
#define MAX_PF_SQ 256
#define ESW_OFFLOADS_NUM_GROUPS 4
static int esw_create_offloads_fdb_table(struct mlx5_eswitch *esw, int nvports)
{
int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in);
int table_size, ix, esw_size, err = 0;
struct mlx5_core_dev *dev = esw->dev;
struct mlx5_flow_namespace *root_ns;
struct mlx5_flow_table *fdb = NULL;
struct mlx5_flow_group *g;
u32 *flow_group_in;
void *match_criteria;
u32 flags = 0;
flow_group_in = mlx5_vzalloc(inlen);
if (!flow_group_in)
return -ENOMEM;
root_ns = mlx5_get_flow_namespace(dev, MLX5_FLOW_NAMESPACE_FDB);
if (!root_ns) {
esw_warn(dev, "Failed to get FDB flow namespace\n");
err = -EOPNOTSUPP;
goto ns_err;
}
esw_debug(dev, "Create offloads FDB table, min (max esw size(2^%d), max counters(%d)*groups(%d))\n",
MLX5_CAP_ESW_FLOWTABLE_FDB(dev, log_max_ft_size),
MLX5_CAP_GEN(dev, max_flow_counter), ESW_OFFLOADS_NUM_GROUPS);
esw_size = min_t(int, MLX5_CAP_GEN(dev, max_flow_counter) * ESW_OFFLOADS_NUM_GROUPS,
1 << MLX5_CAP_ESW_FLOWTABLE_FDB(dev, log_max_ft_size));
if (MLX5_CAP_ESW_FLOWTABLE_FDB(dev, encap) &&
MLX5_CAP_ESW_FLOWTABLE_FDB(dev, decap))
flags |= MLX5_FLOW_TABLE_TUNNEL_EN;
fdb = mlx5_create_auto_grouped_flow_table(root_ns, FDB_FAST_PATH,
esw_size,
ESW_OFFLOADS_NUM_GROUPS, 0,
flags);
if (IS_ERR(fdb)) {
err = PTR_ERR(fdb);
esw_warn(dev, "Failed to create Fast path FDB Table err %d\n", err);
goto fast_fdb_err;
}
esw->fdb_table.fdb = fdb;
table_size = nvports + MAX_PF_SQ + 1;
fdb = mlx5_create_flow_table(root_ns, FDB_SLOW_PATH, table_size, 0, 0);
if (IS_ERR(fdb)) {
err = PTR_ERR(fdb);
esw_warn(dev, "Failed to create slow path FDB Table err %d\n", err);
goto slow_fdb_err;
}
esw->fdb_table.offloads.fdb = fdb;
/* create send-to-vport group */
memset(flow_group_in, 0, inlen);
MLX5_SET(create_flow_group_in, flow_group_in, match_criteria_enable,
MLX5_MATCH_MISC_PARAMETERS);
match_criteria = MLX5_ADDR_OF(create_flow_group_in, flow_group_in, match_criteria);
MLX5_SET_TO_ONES(fte_match_param, match_criteria, misc_parameters.source_sqn);
MLX5_SET_TO_ONES(fte_match_param, match_criteria, misc_parameters.source_port);
ix = nvports + MAX_PF_SQ;
MLX5_SET(create_flow_group_in, flow_group_in, start_flow_index, 0);
MLX5_SET(create_flow_group_in, flow_group_in, end_flow_index, ix - 1);
g = mlx5_create_flow_group(fdb, flow_group_in);
if (IS_ERR(g)) {
err = PTR_ERR(g);
esw_warn(dev, "Failed to create send-to-vport flow group err(%d)\n", err);
goto send_vport_err;
}
esw->fdb_table.offloads.send_to_vport_grp = g;
/* create miss group */
memset(flow_group_in, 0, inlen);
MLX5_SET(create_flow_group_in, flow_group_in, match_criteria_enable, 0);
MLX5_SET(create_flow_group_in, flow_group_in, start_flow_index, ix);
MLX5_SET(create_flow_group_in, flow_group_in, end_flow_index, ix + 1);
g = mlx5_create_flow_group(fdb, flow_group_in);
if (IS_ERR(g)) {
err = PTR_ERR(g);
esw_warn(dev, "Failed to create miss flow group err(%d)\n", err);
goto miss_err;
}
esw->fdb_table.offloads.miss_grp = g;
err = esw_add_fdb_miss_rule(esw);
if (err)
goto miss_rule_err;
return 0;
miss_rule_err:
mlx5_destroy_flow_group(esw->fdb_table.offloads.miss_grp);
miss_err:
mlx5_destroy_flow_group(esw->fdb_table.offloads.send_to_vport_grp);
send_vport_err:
mlx5_destroy_flow_table(esw->fdb_table.offloads.fdb);
slow_fdb_err:
mlx5_destroy_flow_table(esw->fdb_table.fdb);
fast_fdb_err:
ns_err:
kvfree(flow_group_in);
return err;
}
static void esw_destroy_offloads_fdb_table(struct mlx5_eswitch *esw)
{
if (!esw->fdb_table.fdb)
return;
esw_debug(esw->dev, "Destroy offloads FDB Table\n");
mlx5_del_flow_rules(esw->fdb_table.offloads.miss_rule);
mlx5_destroy_flow_group(esw->fdb_table.offloads.send_to_vport_grp);
mlx5_destroy_flow_group(esw->fdb_table.offloads.miss_grp);
mlx5_destroy_flow_table(esw->fdb_table.offloads.fdb);
mlx5_destroy_flow_table(esw->fdb_table.fdb);
}
static int esw_create_offloads_table(struct mlx5_eswitch *esw)
{
struct mlx5_flow_namespace *ns;
struct mlx5_flow_table *ft_offloads;
struct mlx5_core_dev *dev = esw->dev;
int err = 0;
ns = mlx5_get_flow_namespace(dev, MLX5_FLOW_NAMESPACE_OFFLOADS);
if (!ns) {
esw_warn(esw->dev, "Failed to get offloads flow namespace\n");
return -EOPNOTSUPP;
}
ft_offloads = mlx5_create_flow_table(ns, 0, dev->priv.sriov.num_vfs + 2, 0, 0);
if (IS_ERR(ft_offloads)) {
err = PTR_ERR(ft_offloads);
esw_warn(esw->dev, "Failed to create offloads table, err %d\n", err);
return err;
}
esw->offloads.ft_offloads = ft_offloads;
return 0;
}
static void esw_destroy_offloads_table(struct mlx5_eswitch *esw)
{
struct mlx5_esw_offload *offloads = &esw->offloads;
mlx5_destroy_flow_table(offloads->ft_offloads);
}
static int esw_create_vport_rx_group(struct mlx5_eswitch *esw)
{
int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in);
struct mlx5_flow_group *g;
struct mlx5_priv *priv = &esw->dev->priv;
u32 *flow_group_in;
void *match_criteria, *misc;
int err = 0;
int nvports = priv->sriov.num_vfs + 2;
flow_group_in = mlx5_vzalloc(inlen);
if (!flow_group_in)
return -ENOMEM;
/* create vport rx group */
memset(flow_group_in, 0, inlen);
MLX5_SET(create_flow_group_in, flow_group_in, match_criteria_enable,
MLX5_MATCH_MISC_PARAMETERS);
match_criteria = MLX5_ADDR_OF(create_flow_group_in, flow_group_in, match_criteria);
misc = MLX5_ADDR_OF(fte_match_param, match_criteria, misc_parameters);
MLX5_SET_TO_ONES(fte_match_set_misc, misc, source_port);
MLX5_SET(create_flow_group_in, flow_group_in, start_flow_index, 0);
MLX5_SET(create_flow_group_in, flow_group_in, end_flow_index, nvports - 1);
g = mlx5_create_flow_group(esw->offloads.ft_offloads, flow_group_in);
if (IS_ERR(g)) {
err = PTR_ERR(g);
mlx5_core_warn(esw->dev, "Failed to create vport rx group err %d\n", err);
goto out;
}
esw->offloads.vport_rx_group = g;
out:
kfree(flow_group_in);
return err;
}
static void esw_destroy_vport_rx_group(struct mlx5_eswitch *esw)
{
mlx5_destroy_flow_group(esw->offloads.vport_rx_group);
}
struct mlx5_flow_handle *
mlx5_eswitch_create_vport_rx_rule(struct mlx5_eswitch *esw, int vport, u32 tirn)
{
struct mlx5_flow_act flow_act = {0};
struct mlx5_flow_destination dest;
struct mlx5_flow_handle *flow_rule;
struct mlx5_flow_spec *spec;
void *misc;
spec = mlx5_vzalloc(sizeof(*spec));
if (!spec) {
esw_warn(esw->dev, "Failed to alloc match parameters\n");
flow_rule = ERR_PTR(-ENOMEM);
goto out;
}
misc = MLX5_ADDR_OF(fte_match_param, spec->match_value, misc_parameters);
MLX5_SET(fte_match_set_misc, misc, source_port, vport);
misc = MLX5_ADDR_OF(fte_match_param, spec->match_criteria, misc_parameters);
MLX5_SET_TO_ONES(fte_match_set_misc, misc, source_port);
spec->match_criteria_enable = MLX5_MATCH_MISC_PARAMETERS;
dest.type = MLX5_FLOW_DESTINATION_TYPE_TIR;
dest.tir_num = tirn;
flow_act.action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
flow_rule = mlx5_add_flow_rules(esw->offloads.ft_offloads, spec,
&flow_act, &dest, 1);
if (IS_ERR(flow_rule)) {
esw_warn(esw->dev, "fs offloads: Failed to add vport rx rule err %ld\n", PTR_ERR(flow_rule));
goto out;
}
out:
kvfree(spec);
return flow_rule;
}
static int esw_offloads_start(struct mlx5_eswitch *esw)
{
int err, err1, num_vfs = esw->dev->priv.sriov.num_vfs;
if (esw->mode != SRIOV_LEGACY) {
esw_warn(esw->dev, "Can't set offloads mode, SRIOV legacy not enabled\n");
return -EINVAL;
}
mlx5_eswitch_disable_sriov(esw);
err = mlx5_eswitch_enable_sriov(esw, num_vfs, SRIOV_OFFLOADS);
if (err) {
esw_warn(esw->dev, "Failed setting eswitch to offloads, err %d\n", err);
err1 = mlx5_eswitch_enable_sriov(esw, num_vfs, SRIOV_LEGACY);
if (err1)
esw_warn(esw->dev, "Failed setting eswitch back to legacy, err %d\n", err1);
}
if (esw->offloads.inline_mode == MLX5_INLINE_MODE_NONE) {
if (mlx5_eswitch_inline_mode_get(esw,
num_vfs,
&esw->offloads.inline_mode)) {
esw->offloads.inline_mode = MLX5_INLINE_MODE_L2;
esw_warn(esw->dev, "Inline mode is different between vports\n");
}
}
return err;
}
int esw_offloads_init(struct mlx5_eswitch *esw, int nvports)
{
struct mlx5_eswitch_rep *rep;
int vport;
int err;
/* disable PF RoCE so missed packets don't go through RoCE steering */
mlx5_dev_list_lock();
mlx5_remove_dev_by_protocol(esw->dev, MLX5_INTERFACE_PROTOCOL_IB);
mlx5_dev_list_unlock();
err = esw_create_offloads_fdb_table(esw, nvports);
if (err)
goto create_fdb_err;
err = esw_create_offloads_table(esw);
if (err)
goto create_ft_err;
err = esw_create_vport_rx_group(esw);
if (err)
goto create_fg_err;
for (vport = 0; vport < nvports; vport++) {
rep = &esw->offloads.vport_reps[vport];
if (!rep->valid)
continue;
err = rep->load(esw, rep);
if (err)
goto err_reps;
}
return 0;
err_reps:
for (vport--; vport >= 0; vport--) {
rep = &esw->offloads.vport_reps[vport];
if (!rep->valid)
continue;
rep->unload(esw, rep);
}
esw_destroy_vport_rx_group(esw);
create_fg_err:
esw_destroy_offloads_table(esw);
create_ft_err:
esw_destroy_offloads_fdb_table(esw);
create_fdb_err:
/* enable back PF RoCE */
mlx5_dev_list_lock();
mlx5_add_dev_by_protocol(esw->dev, MLX5_INTERFACE_PROTOCOL_IB);
mlx5_dev_list_unlock();
return err;
}
static int esw_offloads_stop(struct mlx5_eswitch *esw)
{
int err, err1, num_vfs = esw->dev->priv.sriov.num_vfs;
mlx5_eswitch_disable_sriov(esw);
err = mlx5_eswitch_enable_sriov(esw, num_vfs, SRIOV_LEGACY);
if (err) {
esw_warn(esw->dev, "Failed setting eswitch to legacy, err %d\n", err);
err1 = mlx5_eswitch_enable_sriov(esw, num_vfs, SRIOV_OFFLOADS);
if (err1)
esw_warn(esw->dev, "Failed setting eswitch back to offloads, err %d\n", err);
}
/* enable back PF RoCE */
mlx5_dev_list_lock();
mlx5_add_dev_by_protocol(esw->dev, MLX5_INTERFACE_PROTOCOL_IB);
mlx5_dev_list_unlock();
return err;
}
void esw_offloads_cleanup(struct mlx5_eswitch *esw, int nvports)
{
struct mlx5_eswitch_rep *rep;
int vport;
for (vport = 0; vport < nvports; vport++) {
rep = &esw->offloads.vport_reps[vport];
if (!rep->valid)
continue;
rep->unload(esw, rep);
}
esw_destroy_vport_rx_group(esw);
esw_destroy_offloads_table(esw);
esw_destroy_offloads_fdb_table(esw);
}
static int esw_mode_from_devlink(u16 mode, u16 *mlx5_mode)
{
switch (mode) {
case DEVLINK_ESWITCH_MODE_LEGACY:
*mlx5_mode = SRIOV_LEGACY;
break;
case DEVLINK_ESWITCH_MODE_SWITCHDEV:
*mlx5_mode = SRIOV_OFFLOADS;
break;
default:
return -EINVAL;
}
return 0;
}
static int esw_mode_to_devlink(u16 mlx5_mode, u16 *mode)
{
switch (mlx5_mode) {
case SRIOV_LEGACY:
*mode = DEVLINK_ESWITCH_MODE_LEGACY;
break;
case SRIOV_OFFLOADS:
*mode = DEVLINK_ESWITCH_MODE_SWITCHDEV;
break;
default:
return -EINVAL;
}
return 0;
}
static int esw_inline_mode_from_devlink(u8 mode, u8 *mlx5_mode)
{
switch (mode) {
case DEVLINK_ESWITCH_INLINE_MODE_NONE:
*mlx5_mode = MLX5_INLINE_MODE_NONE;
break;
case DEVLINK_ESWITCH_INLINE_MODE_LINK:
*mlx5_mode = MLX5_INLINE_MODE_L2;
break;
case DEVLINK_ESWITCH_INLINE_MODE_NETWORK:
*mlx5_mode = MLX5_INLINE_MODE_IP;
break;
case DEVLINK_ESWITCH_INLINE_MODE_TRANSPORT:
*mlx5_mode = MLX5_INLINE_MODE_TCP_UDP;
break;
default:
return -EINVAL;
}
return 0;
}
static int esw_inline_mode_to_devlink(u8 mlx5_mode, u8 *mode)
{
switch (mlx5_mode) {
case MLX5_INLINE_MODE_NONE:
*mode = DEVLINK_ESWITCH_INLINE_MODE_NONE;
break;
case MLX5_INLINE_MODE_L2:
*mode = DEVLINK_ESWITCH_INLINE_MODE_LINK;
break;
case MLX5_INLINE_MODE_IP:
*mode = DEVLINK_ESWITCH_INLINE_MODE_NETWORK;
break;
case MLX5_INLINE_MODE_TCP_UDP:
*mode = DEVLINK_ESWITCH_INLINE_MODE_TRANSPORT;
break;
default:
return -EINVAL;
}
return 0;
}
int mlx5_devlink_eswitch_mode_set(struct devlink *devlink, u16 mode)
{
struct mlx5_core_dev *dev;
u16 cur_mlx5_mode, mlx5_mode = 0;
dev = devlink_priv(devlink);
if (!MLX5_CAP_GEN(dev, vport_group_manager))
return -EOPNOTSUPP;
cur_mlx5_mode = dev->priv.eswitch->mode;
if (cur_mlx5_mode == SRIOV_NONE)
return -EOPNOTSUPP;
if (esw_mode_from_devlink(mode, &mlx5_mode))
return -EINVAL;
if (cur_mlx5_mode == mlx5_mode)
return 0;
if (mode == DEVLINK_ESWITCH_MODE_SWITCHDEV)
return esw_offloads_start(dev->priv.eswitch);
else if (mode == DEVLINK_ESWITCH_MODE_LEGACY)
return esw_offloads_stop(dev->priv.eswitch);
else
return -EINVAL;
}
int mlx5_devlink_eswitch_mode_get(struct devlink *devlink, u16 *mode)
{
struct mlx5_core_dev *dev;
dev = devlink_priv(devlink);
if (!MLX5_CAP_GEN(dev, vport_group_manager))
return -EOPNOTSUPP;
if (dev->priv.eswitch->mode == SRIOV_NONE)
return -EOPNOTSUPP;
return esw_mode_to_devlink(dev->priv.eswitch->mode, mode);
}
int mlx5_devlink_eswitch_inline_mode_set(struct devlink *devlink, u8 mode)
{
struct mlx5_core_dev *dev = devlink_priv(devlink);
struct mlx5_eswitch *esw = dev->priv.eswitch;
int num_vports = esw->enabled_vports;
int err;
int vport;
u8 mlx5_mode;
if (!MLX5_CAP_GEN(dev, vport_group_manager))
return -EOPNOTSUPP;
if (esw->mode == SRIOV_NONE)
return -EOPNOTSUPP;
if (MLX5_CAP_ETH(dev, wqe_inline_mode) !=
MLX5_CAP_INLINE_MODE_VPORT_CONTEXT)
return -EOPNOTSUPP;
err = esw_inline_mode_from_devlink(mode, &mlx5_mode);
if (err)
goto out;
for (vport = 1; vport < num_vports; vport++) {
err = mlx5_modify_nic_vport_min_inline(dev, vport, mlx5_mode);
if (err) {
esw_warn(dev, "Failed to set min inline on vport %d\n",
vport);
goto revert_inline_mode;
}
}
esw->offloads.inline_mode = mlx5_mode;
return 0;
revert_inline_mode:
while (--vport > 0)
mlx5_modify_nic_vport_min_inline(dev,
vport,
esw->offloads.inline_mode);
out:
return err;
}
int mlx5_devlink_eswitch_inline_mode_get(struct devlink *devlink, u8 *mode)
{
struct mlx5_core_dev *dev = devlink_priv(devlink);
struct mlx5_eswitch *esw = dev->priv.eswitch;
if (!MLX5_CAP_GEN(dev, vport_group_manager))
return -EOPNOTSUPP;
if (esw->mode == SRIOV_NONE)
return -EOPNOTSUPP;
if (MLX5_CAP_ETH(dev, wqe_inline_mode) !=
MLX5_CAP_INLINE_MODE_VPORT_CONTEXT)
return -EOPNOTSUPP;
return esw_inline_mode_to_devlink(esw->offloads.inline_mode, mode);
}
int mlx5_eswitch_inline_mode_get(struct mlx5_eswitch *esw, int nvfs, u8 *mode)
{
struct mlx5_core_dev *dev = esw->dev;
int vport;
u8 prev_mlx5_mode, mlx5_mode = MLX5_INLINE_MODE_L2;
if (!MLX5_CAP_GEN(dev, vport_group_manager))
return -EOPNOTSUPP;
if (esw->mode == SRIOV_NONE)
return -EOPNOTSUPP;
if (MLX5_CAP_ETH(dev, wqe_inline_mode) !=
MLX5_CAP_INLINE_MODE_VPORT_CONTEXT)
return -EOPNOTSUPP;
for (vport = 1; vport <= nvfs; vport++) {
mlx5_query_nic_vport_min_inline(dev, vport, &mlx5_mode);
if (vport > 1 && prev_mlx5_mode != mlx5_mode)
return -EINVAL;
prev_mlx5_mode = mlx5_mode;
}
*mode = mlx5_mode;
return 0;
}
void mlx5_eswitch_register_vport_rep(struct mlx5_eswitch *esw,
int vport_index,
struct mlx5_eswitch_rep *__rep)
{
struct mlx5_esw_offload *offloads = &esw->offloads;
struct mlx5_eswitch_rep *rep;
rep = &offloads->vport_reps[vport_index];
memset(rep, 0, sizeof(*rep));
rep->load = __rep->load;
rep->unload = __rep->unload;
rep->vport = __rep->vport;
rep->netdev = __rep->netdev;
ether_addr_copy(rep->hw_id, __rep->hw_id);
INIT_LIST_HEAD(&rep->vport_sqs_list);
rep->valid = true;
}
void mlx5_eswitch_unregister_vport_rep(struct mlx5_eswitch *esw,
int vport_index)
{
struct mlx5_esw_offload *offloads = &esw->offloads;
struct mlx5_eswitch_rep *rep;
rep = &offloads->vport_reps[vport_index];
if (esw->mode == SRIOV_OFFLOADS && esw->vports[vport_index].enabled)
rep->unload(esw, rep);
rep->valid = false;
}
struct net_device *mlx5_eswitch_get_uplink_netdev(struct mlx5_eswitch *esw)
{
#define UPLINK_REP_INDEX 0
struct mlx5_esw_offload *offloads = &esw->offloads;
struct mlx5_eswitch_rep *rep;
rep = &offloads->vport_reps[UPLINK_REP_INDEX];
return rep->netdev;
}