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android-kvm / linux / 944207047ca4dabe8e288f653e7ec6da05e70230 / . / drivers / net / ethernet / mellanox / mlx5 / core / eswitch_offloads.c
blob: 32bc08a399256c5ce3bcfed8b9de181ec76045b2 [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/idr.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"
#include "esw/indir_table.h"
#include "esw/acl/ofld.h"
#include "rdma.h"
#include "en.h"
#include "fs_core.h"
#include "lib/devcom.h"
#include "lib/eq.h"
#include "lib/fs_chains.h"
#include "en_tc.h"
#include "en/mapping.h"
#include "devlink.h"
#define mlx5_esw_for_each_rep(esw, i, rep) \
xa_for_each(&((esw)->offloads.vport_reps), i, rep)
#define mlx5_esw_for_each_sf_rep(esw, i, rep) \
xa_for_each_marked(&((esw)->offloads.vport_reps), i, rep, MLX5_ESW_VPT_SF)
#define mlx5_esw_for_each_vf_rep(esw, index, rep) \
mlx5_esw_for_each_entry_marked(&((esw)->offloads.vport_reps), index, \
rep, (esw)->esw_funcs.num_vfs, MLX5_ESW_VPT_VF)
/* There are two match-all miss flows, one for unicast dst mac and
* one for multicast.
*/
#define MLX5_ESW_MISS_FLOWS (2)
#define UPLINK_REP_INDEX 0
#define MLX5_ESW_VPORT_TBL_SIZE 128
#define MLX5_ESW_VPORT_TBL_NUM_GROUPS 4
static const struct esw_vport_tbl_namespace mlx5_esw_vport_tbl_mirror_ns = {
.max_fte = MLX5_ESW_VPORT_TBL_SIZE,
.max_num_groups = MLX5_ESW_VPORT_TBL_NUM_GROUPS,
.flags = 0,
};
static struct mlx5_eswitch_rep *mlx5_eswitch_get_rep(struct mlx5_eswitch *esw,
u16 vport_num)
{
return xa_load(&esw->offloads.vport_reps, vport_num);
}
static void
mlx5_eswitch_set_rule_flow_source(struct mlx5_eswitch *esw,
struct mlx5_flow_spec *spec,
struct mlx5_esw_flow_attr *attr)
{
if (!MLX5_CAP_ESW_FLOWTABLE(esw->dev, flow_source) || !attr || !attr->in_rep)
return;
if (attr->int_port) {
spec->flow_context.flow_source = mlx5e_tc_int_port_get_flow_source(attr->int_port);
return;
}
spec->flow_context.flow_source = (attr->in_rep->vport == MLX5_VPORT_UPLINK) ?
MLX5_FLOW_CONTEXT_FLOW_SOURCE_UPLINK :
MLX5_FLOW_CONTEXT_FLOW_SOURCE_LOCAL_VPORT;
}
/* Actually only the upper 16 bits of reg c0 need to be cleared, but the lower 16 bits
* are not needed as well in the following process. So clear them all for simplicity.
*/
void
mlx5_eswitch_clear_rule_source_port(struct mlx5_eswitch *esw, struct mlx5_flow_spec *spec)
{
if (mlx5_eswitch_vport_match_metadata_enabled(esw)) {
void *misc2;
misc2 = MLX5_ADDR_OF(fte_match_param, spec->match_value, misc_parameters_2);
MLX5_SET(fte_match_set_misc2, misc2, metadata_reg_c_0, 0);
misc2 = MLX5_ADDR_OF(fte_match_param, spec->match_criteria, misc_parameters_2);
MLX5_SET(fte_match_set_misc2, misc2, metadata_reg_c_0, 0);
if (!memchr_inv(misc2, 0, MLX5_ST_SZ_BYTES(fte_match_set_misc2)))
spec->match_criteria_enable &= ~MLX5_MATCH_MISC_PARAMETERS_2;
}
}
static void
mlx5_eswitch_set_rule_source_port(struct mlx5_eswitch *esw,
struct mlx5_flow_spec *spec,
struct mlx5_flow_attr *attr,
struct mlx5_eswitch *src_esw,
u16 vport)
{
struct mlx5_esw_flow_attr *esw_attr = attr->esw_attr;
u32 metadata;
void *misc2;
void *misc;
/* Use metadata matching because vport is not represented by single
* VHCA in dual-port RoCE mode, and matching on source vport may fail.
*/
if (mlx5_eswitch_vport_match_metadata_enabled(esw)) {
if (mlx5_esw_indir_table_decap_vport(attr))
vport = mlx5_esw_indir_table_decap_vport(attr);
if (esw_attr->int_port)
metadata =
mlx5e_tc_int_port_get_metadata_for_match(esw_attr->int_port);
else
metadata =
mlx5_eswitch_get_vport_metadata_for_match(src_esw, vport);
misc2 = MLX5_ADDR_OF(fte_match_param, spec->match_value, misc_parameters_2);
MLX5_SET(fte_match_set_misc2, misc2, metadata_reg_c_0, metadata);
misc2 = MLX5_ADDR_OF(fte_match_param, spec->match_criteria, misc_parameters_2);
MLX5_SET(fte_match_set_misc2, misc2, metadata_reg_c_0,
mlx5_eswitch_get_vport_metadata_mask());
spec->match_criteria_enable |= MLX5_MATCH_MISC_PARAMETERS_2;
} else {
misc = MLX5_ADDR_OF(fte_match_param, spec->match_value, misc_parameters);
MLX5_SET(fte_match_set_misc, misc, source_port, vport);
if (MLX5_CAP_ESW(esw->dev, merged_eswitch))
MLX5_SET(fte_match_set_misc, misc,
source_eswitch_owner_vhca_id,
MLX5_CAP_GEN(src_esw->dev, vhca_id));
misc = MLX5_ADDR_OF(fte_match_param, spec->match_criteria, misc_parameters);
MLX5_SET_TO_ONES(fte_match_set_misc, misc, source_port);
if (MLX5_CAP_ESW(esw->dev, merged_eswitch))
MLX5_SET_TO_ONES(fte_match_set_misc, misc,
source_eswitch_owner_vhca_id);
spec->match_criteria_enable |= MLX5_MATCH_MISC_PARAMETERS;
}
}
static int
esw_setup_decap_indir(struct mlx5_eswitch *esw,
struct mlx5_flow_attr *attr,
struct mlx5_flow_spec *spec)
{
struct mlx5_flow_table *ft;
if (!(attr->flags & MLX5_ESW_ATTR_FLAG_SRC_REWRITE))
return -EOPNOTSUPP;
ft = mlx5_esw_indir_table_get(esw, attr, spec,
mlx5_esw_indir_table_decap_vport(attr), true);
return PTR_ERR_OR_ZERO(ft);
}
static void
esw_cleanup_decap_indir(struct mlx5_eswitch *esw,
struct mlx5_flow_attr *attr)
{
if (mlx5_esw_indir_table_decap_vport(attr))
mlx5_esw_indir_table_put(esw, attr,
mlx5_esw_indir_table_decap_vport(attr),
true);
}
static int
esw_setup_sampler_dest(struct mlx5_flow_destination *dest,
struct mlx5_flow_act *flow_act,
struct mlx5_flow_attr *attr,
int i)
{
flow_act->flags |= FLOW_ACT_IGNORE_FLOW_LEVEL;
dest[i].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_SAMPLER;
dest[i].sampler_id = attr->sample_attr->sampler_id;
return 0;
}
static int
esw_setup_ft_dest(struct mlx5_flow_destination *dest,
struct mlx5_flow_act *flow_act,
struct mlx5_eswitch *esw,
struct mlx5_flow_attr *attr,
struct mlx5_flow_spec *spec,
int i)
{
flow_act->flags |= FLOW_ACT_IGNORE_FLOW_LEVEL;
dest[i].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
dest[i].ft = attr->dest_ft;
if (mlx5_esw_indir_table_decap_vport(attr))
return esw_setup_decap_indir(esw, attr, spec);
return 0;
}
static void
esw_setup_slow_path_dest(struct mlx5_flow_destination *dest,
struct mlx5_flow_act *flow_act,
struct mlx5_fs_chains *chains,
int i)
{
if (mlx5_chains_ignore_flow_level_supported(chains))
flow_act->flags |= FLOW_ACT_IGNORE_FLOW_LEVEL;
dest[i].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
dest[i].ft = mlx5_chains_get_tc_end_ft(chains);
}
static int
esw_setup_chain_dest(struct mlx5_flow_destination *dest,
struct mlx5_flow_act *flow_act,
struct mlx5_fs_chains *chains,
u32 chain, u32 prio, u32 level,
int i)
{
struct mlx5_flow_table *ft;
flow_act->flags |= FLOW_ACT_IGNORE_FLOW_LEVEL;
ft = mlx5_chains_get_table(chains, chain, prio, level);
if (IS_ERR(ft))
return PTR_ERR(ft);
dest[i].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
dest[i].ft = ft;
return 0;
}
static void esw_put_dest_tables_loop(struct mlx5_eswitch *esw, struct mlx5_flow_attr *attr,
int from, int to)
{
struct mlx5_esw_flow_attr *esw_attr = attr->esw_attr;
struct mlx5_fs_chains *chains = esw_chains(esw);
int i;
for (i = from; i < to; i++)
if (esw_attr->dests[i].flags & MLX5_ESW_DEST_CHAIN_WITH_SRC_PORT_CHANGE)
mlx5_chains_put_table(chains, 0, 1, 0);
else if (mlx5_esw_indir_table_needed(esw, attr, esw_attr->dests[i].rep->vport,
esw_attr->dests[i].mdev))
mlx5_esw_indir_table_put(esw, attr, esw_attr->dests[i].rep->vport,
false);
}
static bool
esw_is_chain_src_port_rewrite(struct mlx5_eswitch *esw, struct mlx5_esw_flow_attr *esw_attr)
{
int i;
for (i = esw_attr->split_count; i < esw_attr->out_count; i++)
if (esw_attr->dests[i].flags & MLX5_ESW_DEST_CHAIN_WITH_SRC_PORT_CHANGE)
return true;
return false;
}
static int
esw_setup_chain_src_port_rewrite(struct mlx5_flow_destination *dest,
struct mlx5_flow_act *flow_act,
struct mlx5_eswitch *esw,
struct mlx5_fs_chains *chains,
struct mlx5_flow_attr *attr,
int *i)
{
struct mlx5_esw_flow_attr *esw_attr = attr->esw_attr;
int j, err;
if (!(attr->flags & MLX5_ESW_ATTR_FLAG_SRC_REWRITE))
return -EOPNOTSUPP;
for (j = esw_attr->split_count; j < esw_attr->out_count; j++, (*i)++) {
err = esw_setup_chain_dest(dest, flow_act, chains, attr->dest_chain, 1, 0, *i);
if (err)
goto err_setup_chain;
if (esw_attr->dests[j].pkt_reformat) {
flow_act->action |= MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT;
flow_act->pkt_reformat = esw_attr->dests[j].pkt_reformat;
}
}
return 0;
err_setup_chain:
esw_put_dest_tables_loop(esw, attr, esw_attr->split_count, j);
return err;
}
static void esw_cleanup_chain_src_port_rewrite(struct mlx5_eswitch *esw,
struct mlx5_flow_attr *attr)
{
struct mlx5_esw_flow_attr *esw_attr = attr->esw_attr;
esw_put_dest_tables_loop(esw, attr, esw_attr->split_count, esw_attr->out_count);
}
static bool
esw_is_indir_table(struct mlx5_eswitch *esw, struct mlx5_flow_attr *attr)
{
struct mlx5_esw_flow_attr *esw_attr = attr->esw_attr;
bool result = false;
int i;
/* Indirect table is supported only for flows with in_port uplink
* and the destination is vport on the same eswitch as the uplink,
* return false in case at least one of destinations doesn't meet
* this criteria.
*/
for (i = esw_attr->split_count; i < esw_attr->out_count; i++) {
if (esw_attr->dests[i].rep &&
mlx5_esw_indir_table_needed(esw, attr, esw_attr->dests[i].rep->vport,
esw_attr->dests[i].mdev)) {
result = true;
} else {
result = false;
break;
}
}
return result;
}
static int
esw_setup_indir_table(struct mlx5_flow_destination *dest,
struct mlx5_flow_act *flow_act,
struct mlx5_eswitch *esw,
struct mlx5_flow_attr *attr,
struct mlx5_flow_spec *spec,
bool ignore_flow_lvl,
int *i)
{
struct mlx5_esw_flow_attr *esw_attr = attr->esw_attr;
int j, err;
if (!(attr->flags & MLX5_ESW_ATTR_FLAG_SRC_REWRITE))
return -EOPNOTSUPP;
for (j = esw_attr->split_count; j < esw_attr->out_count; j++, (*i)++) {
if (ignore_flow_lvl)
flow_act->flags |= FLOW_ACT_IGNORE_FLOW_LEVEL;
dest[*i].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
dest[*i].ft = mlx5_esw_indir_table_get(esw, attr, spec,
esw_attr->dests[j].rep->vport, false);
if (IS_ERR(dest[*i].ft)) {
err = PTR_ERR(dest[*i].ft);
goto err_indir_tbl_get;
}
}
if (mlx5_esw_indir_table_decap_vport(attr)) {
err = esw_setup_decap_indir(esw, attr, spec);
if (err)
goto err_indir_tbl_get;
}
return 0;
err_indir_tbl_get:
esw_put_dest_tables_loop(esw, attr, esw_attr->split_count, j);
return err;
}
static void esw_cleanup_indir_table(struct mlx5_eswitch *esw, struct mlx5_flow_attr *attr)
{
struct mlx5_esw_flow_attr *esw_attr = attr->esw_attr;
esw_put_dest_tables_loop(esw, attr, esw_attr->split_count, esw_attr->out_count);
esw_cleanup_decap_indir(esw, attr);
}
static void
esw_cleanup_chain_dest(struct mlx5_fs_chains *chains, u32 chain, u32 prio, u32 level)
{
mlx5_chains_put_table(chains, chain, prio, level);
}
static void
esw_setup_vport_dest(struct mlx5_flow_destination *dest, struct mlx5_flow_act *flow_act,
struct mlx5_eswitch *esw, struct mlx5_esw_flow_attr *esw_attr,
int attr_idx, int dest_idx, bool pkt_reformat)
{
dest[dest_idx].type = MLX5_FLOW_DESTINATION_TYPE_VPORT;
dest[dest_idx].vport.num = esw_attr->dests[attr_idx].rep->vport;
if (MLX5_CAP_ESW(esw->dev, merged_eswitch)) {
dest[dest_idx].vport.vhca_id =
MLX5_CAP_GEN(esw_attr->dests[attr_idx].mdev, vhca_id);
dest[dest_idx].vport.flags |= MLX5_FLOW_DEST_VPORT_VHCA_ID;
}
if (esw_attr->dests[attr_idx].flags & MLX5_ESW_DEST_ENCAP) {
if (pkt_reformat) {
flow_act->action |= MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT;
flow_act->pkt_reformat = esw_attr->dests[attr_idx].pkt_reformat;
}
dest[dest_idx].vport.flags |= MLX5_FLOW_DEST_VPORT_REFORMAT_ID;
dest[dest_idx].vport.pkt_reformat = esw_attr->dests[attr_idx].pkt_reformat;
}
}
static int
esw_setup_vport_dests(struct mlx5_flow_destination *dest, struct mlx5_flow_act *flow_act,
struct mlx5_eswitch *esw, struct mlx5_esw_flow_attr *esw_attr,
int i)
{
int j;
for (j = esw_attr->split_count; j < esw_attr->out_count; j++, i++)
esw_setup_vport_dest(dest, flow_act, esw, esw_attr, j, i, true);
return i;
}
static bool
esw_src_port_rewrite_supported(struct mlx5_eswitch *esw)
{
return MLX5_CAP_GEN(esw->dev, reg_c_preserve) &&
mlx5_eswitch_vport_match_metadata_enabled(esw) &&
MLX5_CAP_ESW_FLOWTABLE_FDB(esw->dev, ignore_flow_level);
}
static int
esw_setup_dests(struct mlx5_flow_destination *dest,
struct mlx5_flow_act *flow_act,
struct mlx5_eswitch *esw,
struct mlx5_flow_attr *attr,
struct mlx5_flow_spec *spec,
int *i)
{
struct mlx5_esw_flow_attr *esw_attr = attr->esw_attr;
struct mlx5_fs_chains *chains = esw_chains(esw);
int err = 0;
if (!mlx5_eswitch_termtbl_required(esw, attr, flow_act, spec) &&
esw_src_port_rewrite_supported(esw))
attr->flags |= MLX5_ESW_ATTR_FLAG_SRC_REWRITE;
if (attr->flags & MLX5_ESW_ATTR_FLAG_SAMPLE) {
esw_setup_sampler_dest(dest, flow_act, attr, *i);
(*i)++;
} else if (attr->dest_ft) {
esw_setup_ft_dest(dest, flow_act, esw, attr, spec, *i);
(*i)++;
} else if (mlx5_esw_attr_flags_skip(attr->flags)) {
esw_setup_slow_path_dest(dest, flow_act, chains, *i);
(*i)++;
} else if (attr->dest_chain) {
err = esw_setup_chain_dest(dest, flow_act, chains, attr->dest_chain,
1, 0, *i);
(*i)++;
} else if (esw_is_indir_table(esw, attr)) {
err = esw_setup_indir_table(dest, flow_act, esw, attr, spec, true, i);
} else if (esw_is_chain_src_port_rewrite(esw, esw_attr)) {
err = esw_setup_chain_src_port_rewrite(dest, flow_act, esw, chains, attr, i);
} else {
*i = esw_setup_vport_dests(dest, flow_act, esw, esw_attr, *i);
}
return err;
}
static void
esw_cleanup_dests(struct mlx5_eswitch *esw,
struct mlx5_flow_attr *attr)
{
struct mlx5_esw_flow_attr *esw_attr = attr->esw_attr;
struct mlx5_fs_chains *chains = esw_chains(esw);
if (attr->dest_ft) {
esw_cleanup_decap_indir(esw, attr);
} else if (!mlx5_esw_attr_flags_skip(attr->flags)) {
if (attr->dest_chain)
esw_cleanup_chain_dest(chains, attr->dest_chain, 1, 0);
else if (esw_is_indir_table(esw, attr))
esw_cleanup_indir_table(esw, attr);
else if (esw_is_chain_src_port_rewrite(esw, esw_attr))
esw_cleanup_chain_src_port_rewrite(esw, attr);
}
}
struct mlx5_flow_handle *
mlx5_eswitch_add_offloaded_rule(struct mlx5_eswitch *esw,
struct mlx5_flow_spec *spec,
struct mlx5_flow_attr *attr)
{
struct mlx5_flow_act flow_act = { .flags = FLOW_ACT_NO_APPEND, };
struct mlx5_esw_flow_attr *esw_attr = attr->esw_attr;
struct mlx5_fs_chains *chains = esw_chains(esw);
bool split = !!(esw_attr->split_count);
struct mlx5_vport_tbl_attr fwd_attr;
struct mlx5_flow_destination *dest;
struct mlx5_flow_handle *rule;
struct mlx5_flow_table *fdb;
int i = 0;
if (esw->mode != MLX5_ESWITCH_OFFLOADS)
return ERR_PTR(-EOPNOTSUPP);
dest = kcalloc(MLX5_MAX_FLOW_FWD_VPORTS + 1, sizeof(*dest), GFP_KERNEL);
if (!dest)
return ERR_PTR(-ENOMEM);
flow_act.action = attr->action;
/* if per flow vlan pop/push is emulated, don't set that into the firmware */
if (!mlx5_eswitch_vlan_actions_supported(esw->dev, 1))
flow_act.action &= ~(MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH |
MLX5_FLOW_CONTEXT_ACTION_VLAN_POP);
else if (flow_act.action & MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH) {
flow_act.vlan[0].ethtype = ntohs(esw_attr->vlan_proto[0]);
flow_act.vlan[0].vid = esw_attr->vlan_vid[0];
flow_act.vlan[0].prio = esw_attr->vlan_prio[0];
if (flow_act.action & MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH_2) {
flow_act.vlan[1].ethtype = ntohs(esw_attr->vlan_proto[1]);
flow_act.vlan[1].vid = esw_attr->vlan_vid[1];
flow_act.vlan[1].prio = esw_attr->vlan_prio[1];
}
}
mlx5_eswitch_set_rule_flow_source(esw, spec, esw_attr);
if (flow_act.action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) {
int err;
err = esw_setup_dests(dest, &flow_act, esw, attr, spec, &i);
if (err) {
rule = ERR_PTR(err);
goto err_create_goto_table;
}
}
if (esw_attr->decap_pkt_reformat)
flow_act.pkt_reformat = esw_attr->decap_pkt_reformat;
if (flow_act.action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
dest[i].type = MLX5_FLOW_DESTINATION_TYPE_COUNTER;
dest[i].counter_id = mlx5_fc_id(attr->counter);
i++;
}
if (attr->outer_match_level != MLX5_MATCH_NONE)
spec->match_criteria_enable |= MLX5_MATCH_OUTER_HEADERS;
if (attr->inner_match_level != MLX5_MATCH_NONE)
spec->match_criteria_enable |= MLX5_MATCH_INNER_HEADERS;
if (flow_act.action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
flow_act.modify_hdr = attr->modify_hdr;
if (split) {
fwd_attr.chain = attr->chain;
fwd_attr.prio = attr->prio;
fwd_attr.vport = esw_attr->in_rep->vport;
fwd_attr.vport_ns = &mlx5_esw_vport_tbl_mirror_ns;
fdb = mlx5_esw_vporttbl_get(esw, &fwd_attr);
} else {
if (attr->chain || attr->prio)
fdb = mlx5_chains_get_table(chains, attr->chain,
attr->prio, 0);
else
fdb = attr->ft;
if (!(attr->flags & MLX5_ESW_ATTR_FLAG_NO_IN_PORT))
mlx5_eswitch_set_rule_source_port(esw, spec, attr,
esw_attr->in_mdev->priv.eswitch,
esw_attr->in_rep->vport);
}
if (IS_ERR(fdb)) {
rule = ERR_CAST(fdb);
goto err_esw_get;
}
if (mlx5_eswitch_termtbl_required(esw, attr, &flow_act, spec))
rule = mlx5_eswitch_add_termtbl_rule(esw, fdb, spec, esw_attr,
&flow_act, dest, i);
else
rule = mlx5_add_flow_rules(fdb, spec, &flow_act, dest, i);
if (IS_ERR(rule))
goto err_add_rule;
else
atomic64_inc(&esw->offloads.num_flows);
kfree(dest);
return rule;
err_add_rule:
if (split)
mlx5_esw_vporttbl_put(esw, &fwd_attr);
else if (attr->chain || attr->prio)
mlx5_chains_put_table(chains, attr->chain, attr->prio, 0);
err_esw_get:
esw_cleanup_dests(esw, attr);
err_create_goto_table:
kfree(dest);
return rule;
}
struct mlx5_flow_handle *
mlx5_eswitch_add_fwd_rule(struct mlx5_eswitch *esw,
struct mlx5_flow_spec *spec,
struct mlx5_flow_attr *attr)
{
struct mlx5_flow_act flow_act = { .flags = FLOW_ACT_NO_APPEND, };
struct mlx5_esw_flow_attr *esw_attr = attr->esw_attr;
struct mlx5_fs_chains *chains = esw_chains(esw);
struct mlx5_vport_tbl_attr fwd_attr;
struct mlx5_flow_destination *dest;
struct mlx5_flow_table *fast_fdb;
struct mlx5_flow_table *fwd_fdb;
struct mlx5_flow_handle *rule;
int i, err = 0;
dest = kcalloc(MLX5_MAX_FLOW_FWD_VPORTS + 1, sizeof(*dest), GFP_KERNEL);
if (!dest)
return ERR_PTR(-ENOMEM);
fast_fdb = mlx5_chains_get_table(chains, attr->chain, attr->prio, 0);
if (IS_ERR(fast_fdb)) {
rule = ERR_CAST(fast_fdb);
goto err_get_fast;
}
fwd_attr.chain = attr->chain;
fwd_attr.prio = attr->prio;
fwd_attr.vport = esw_attr->in_rep->vport;
fwd_attr.vport_ns = &mlx5_esw_vport_tbl_mirror_ns;
fwd_fdb = mlx5_esw_vporttbl_get(esw, &fwd_attr);
if (IS_ERR(fwd_fdb)) {
rule = ERR_CAST(fwd_fdb);
goto err_get_fwd;
}
flow_act.action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
for (i = 0; i < esw_attr->split_count; i++) {
if (esw_is_indir_table(esw, attr))
err = esw_setup_indir_table(dest, &flow_act, esw, attr, spec, false, &i);
else if (esw_is_chain_src_port_rewrite(esw, esw_attr))
err = esw_setup_chain_src_port_rewrite(dest, &flow_act, esw, chains, attr,
&i);
else
esw_setup_vport_dest(dest, &flow_act, esw, esw_attr, i, i, false);
if (err) {
rule = ERR_PTR(err);
goto err_chain_src_rewrite;
}
}
dest[i].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
dest[i].ft = fwd_fdb;
i++;
mlx5_eswitch_set_rule_source_port(esw, spec, attr,
esw_attr->in_mdev->priv.eswitch,
esw_attr->in_rep->vport);
if (attr->outer_match_level != MLX5_MATCH_NONE)
spec->match_criteria_enable |= MLX5_MATCH_OUTER_HEADERS;
flow_act.flags |= FLOW_ACT_IGNORE_FLOW_LEVEL;
rule = mlx5_add_flow_rules(fast_fdb, spec, &flow_act, dest, i);
if (IS_ERR(rule)) {
i = esw_attr->split_count;
goto err_chain_src_rewrite;
}
atomic64_inc(&esw->offloads.num_flows);
kfree(dest);
return rule;
err_chain_src_rewrite:
esw_put_dest_tables_loop(esw, attr, 0, i);
mlx5_esw_vporttbl_put(esw, &fwd_attr);
err_get_fwd:
mlx5_chains_put_table(chains, attr->chain, attr->prio, 0);
err_get_fast:
kfree(dest);
return rule;
}
static void
__mlx5_eswitch_del_rule(struct mlx5_eswitch *esw,
struct mlx5_flow_handle *rule,
struct mlx5_flow_attr *attr,
bool fwd_rule)
{
struct mlx5_esw_flow_attr *esw_attr = attr->esw_attr;
struct mlx5_fs_chains *chains = esw_chains(esw);
bool split = (esw_attr->split_count > 0);
struct mlx5_vport_tbl_attr fwd_attr;
int i;
mlx5_del_flow_rules(rule);
if (!mlx5_esw_attr_flags_skip(attr->flags)) {
/* unref the term table */
for (i = 0; i < MLX5_MAX_FLOW_FWD_VPORTS; i++) {
if (esw_attr->dests[i].termtbl)
mlx5_eswitch_termtbl_put(esw, esw_attr->dests[i].termtbl);
}
}
atomic64_dec(&esw->offloads.num_flows);
if (fwd_rule || split) {
fwd_attr.chain = attr->chain;
fwd_attr.prio = attr->prio;
fwd_attr.vport = esw_attr->in_rep->vport;
fwd_attr.vport_ns = &mlx5_esw_vport_tbl_mirror_ns;
}
if (fwd_rule) {
mlx5_esw_vporttbl_put(esw, &fwd_attr);
mlx5_chains_put_table(chains, attr->chain, attr->prio, 0);
esw_put_dest_tables_loop(esw, attr, 0, esw_attr->split_count);
} else {
if (split)
mlx5_esw_vporttbl_put(esw, &fwd_attr);
else if (attr->chain || attr->prio)
mlx5_chains_put_table(chains, attr->chain, attr->prio, 0);
esw_cleanup_dests(esw, attr);
}
}
void
mlx5_eswitch_del_offloaded_rule(struct mlx5_eswitch *esw,
struct mlx5_flow_handle *rule,
struct mlx5_flow_attr *attr)
{
__mlx5_eswitch_del_rule(esw, rule, attr, false);
}
void
mlx5_eswitch_del_fwd_rule(struct mlx5_eswitch *esw,
struct mlx5_flow_handle *rule,
struct mlx5_flow_attr *attr)
{
__mlx5_eswitch_del_rule(esw, rule, attr, true);
}
static int esw_set_global_vlan_pop(struct mlx5_eswitch *esw, u8 val)
{
struct mlx5_eswitch_rep *rep;
unsigned long i;
int err = 0;
esw_debug(esw->dev, "%s applying global %s policy\n", __func__, val ? "pop" : "none");
mlx5_esw_for_each_host_func_vport(esw, i, rep, esw->esw_funcs.num_vfs) {
if (atomic_read(&rep->rep_data[REP_ETH].state) != REP_LOADED)
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->dests[0].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->dests[0].rep;
if (push && in_rep->vport == MLX5_VPORT_UPLINK)
goto out_notsupp;
if (pop && out_rep->vport == MLX5_VPORT_UPLINK)
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 == MLX5_VPORT_UPLINK)
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_vid[0]))
goto out_notsupp;
return 0;
out_notsupp:
return -EOPNOTSUPP;
}
int mlx5_eswitch_add_vlan_action(struct mlx5_eswitch *esw,
struct mlx5_flow_attr *attr)
{
struct offloads_fdb *offloads = &esw->fdb_table.offloads;
struct mlx5_esw_flow_attr *esw_attr = attr->esw_attr;
struct mlx5_eswitch_rep *vport = NULL;
bool push, pop, fwd;
int err = 0;
/* nop if we're on the vlan push/pop non emulation mode */
if (mlx5_eswitch_vlan_actions_supported(esw->dev, 1))
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) &&
!attr->dest_chain);
mutex_lock(&esw->state_lock);
err = esw_add_vlan_action_check(esw_attr, push, pop, fwd);
if (err)
goto unlock;
attr->flags &= ~MLX5_ESW_ATTR_FLAG_VLAN_HANDLED;
vport = esw_vlan_action_get_vport(esw_attr, push, pop);
if (!push && !pop && fwd) {
/* tracks VF --> wire rules without vlan push action */
if (esw_attr->dests[0].rep->vport == MLX5_VPORT_UPLINK) {
vport->vlan_refcount++;
attr->flags |= MLX5_ESW_ATTR_FLAG_VLAN_HANDLED;
}
goto unlock;
}
if (!push && !pop)
goto unlock;
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, esw_attr->vlan_vid[0],
0, SET_VLAN_INSERT | SET_VLAN_STRIP);
if (err)
goto out;
vport->vlan = esw_attr->vlan_vid[0];
skip_set_push:
vport->vlan_refcount++;
}
out:
if (!err)
attr->flags |= MLX5_ESW_ATTR_FLAG_VLAN_HANDLED;
unlock:
mutex_unlock(&esw->state_lock);
return err;
}
int mlx5_eswitch_del_vlan_action(struct mlx5_eswitch *esw,
struct mlx5_flow_attr *attr)
{
struct offloads_fdb *offloads = &esw->fdb_table.offloads;
struct mlx5_esw_flow_attr *esw_attr = attr->esw_attr;
struct mlx5_eswitch_rep *vport = NULL;
bool push, pop, fwd;
int err = 0;
/* nop if we're on the vlan push/pop non emulation mode */
if (mlx5_eswitch_vlan_actions_supported(esw->dev, 1))
return 0;
if (!(attr->flags & MLX5_ESW_ATTR_FLAG_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);
mutex_lock(&esw->state_lock);
vport = esw_vlan_action_get_vport(esw_attr, push, pop);
if (!push && !pop && fwd) {
/* tracks VF --> wire rules without vlan push action */
if (esw_attr->dests[0].rep->vport == MLX5_VPORT_UPLINK)
vport->vlan_refcount--;
goto out;
}
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)
goto out;
/* no more vlan rules, stop global vlan pop policy */
err = esw_set_global_vlan_pop(esw, 0);
out:
mutex_unlock(&esw->state_lock);
return err;
}
struct mlx5_flow_handle *
mlx5_eswitch_add_send_to_vport_rule(struct mlx5_eswitch *on_esw,
struct mlx5_eswitch *from_esw,
struct mlx5_eswitch_rep *rep,
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 = kvzalloc(sizeof(*spec), GFP_KERNEL);
if (!spec) {
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);
/* source vport is the esw manager */
MLX5_SET(fte_match_set_misc, misc, source_port, from_esw->manager_vport);
if (MLX5_CAP_ESW(on_esw->dev, merged_eswitch))
MLX5_SET(fte_match_set_misc, misc, source_eswitch_owner_vhca_id,
MLX5_CAP_GEN(from_esw->dev, vhca_id));
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);
if (MLX5_CAP_ESW(on_esw->dev, merged_eswitch))
MLX5_SET_TO_ONES(fte_match_set_misc, misc,
source_eswitch_owner_vhca_id);
spec->match_criteria_enable = MLX5_MATCH_MISC_PARAMETERS;
dest.type = MLX5_FLOW_DESTINATION_TYPE_VPORT;
dest.vport.num = rep->vport;
dest.vport.vhca_id = MLX5_CAP_GEN(rep->esw->dev, vhca_id);
dest.vport.flags |= MLX5_FLOW_DEST_VPORT_VHCA_ID;
flow_act.action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
if (rep->vport == MLX5_VPORT_UPLINK)
spec->flow_context.flow_source = MLX5_FLOW_CONTEXT_FLOW_SOURCE_LOCAL_VPORT;
flow_rule = mlx5_add_flow_rules(on_esw->fdb_table.offloads.slow_fdb,
spec, &flow_act, &dest, 1);
if (IS_ERR(flow_rule))
esw_warn(on_esw->dev, "FDB: Failed to add send to vport rule err %ld\n",
PTR_ERR(flow_rule));
out:
kvfree(spec);
return flow_rule;
}
EXPORT_SYMBOL(mlx5_eswitch_add_send_to_vport_rule);
void mlx5_eswitch_del_send_to_vport_rule(struct mlx5_flow_handle *rule)
{
mlx5_del_flow_rules(rule);
}
static void mlx5_eswitch_del_send_to_vport_meta_rules(struct mlx5_eswitch *esw)
{
struct mlx5_flow_handle **flows = esw->fdb_table.offloads.send_to_vport_meta_rules;
int i = 0, num_vfs = esw->esw_funcs.num_vfs;
if (!num_vfs || !flows)
return;
for (i = 0; i < num_vfs; i++)
mlx5_del_flow_rules(flows[i]);
kvfree(flows);
}
static int
mlx5_eswitch_add_send_to_vport_meta_rules(struct mlx5_eswitch *esw)
{
struct mlx5_flow_destination dest = {};
struct mlx5_flow_act flow_act = {0};
int num_vfs, rule_idx = 0, err = 0;
struct mlx5_flow_handle *flow_rule;
struct mlx5_flow_handle **flows;
struct mlx5_flow_spec *spec;
struct mlx5_vport *vport;
unsigned long i;
u16 vport_num;
num_vfs = esw->esw_funcs.num_vfs;
flows = kvcalloc(num_vfs, sizeof(*flows), GFP_KERNEL);
if (!flows)
return -ENOMEM;
spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
if (!spec) {
err = -ENOMEM;
goto alloc_err;
}
MLX5_SET(fte_match_param, spec->match_criteria,
misc_parameters_2.metadata_reg_c_0, mlx5_eswitch_get_vport_metadata_mask());
MLX5_SET(fte_match_param, spec->match_criteria,
misc_parameters_2.metadata_reg_c_1, ESW_TUN_MASK);
MLX5_SET(fte_match_param, spec->match_value, misc_parameters_2.metadata_reg_c_1,
ESW_TUN_SLOW_TABLE_GOTO_VPORT_MARK);
spec->match_criteria_enable = MLX5_MATCH_MISC_PARAMETERS_2;
dest.type = MLX5_FLOW_DESTINATION_TYPE_VPORT;
flow_act.action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
mlx5_esw_for_each_vf_vport(esw, i, vport, num_vfs) {
vport_num = vport->vport;
MLX5_SET(fte_match_param, spec->match_value, misc_parameters_2.metadata_reg_c_0,
mlx5_eswitch_get_vport_metadata_for_match(esw, vport_num));
dest.vport.num = vport_num;
flow_rule = mlx5_add_flow_rules(esw->fdb_table.offloads.slow_fdb,
spec, &flow_act, &dest, 1);
if (IS_ERR(flow_rule)) {
err = PTR_ERR(flow_rule);
esw_warn(esw->dev, "FDB: Failed to add send to vport meta rule idx %d, err %ld\n",
rule_idx, PTR_ERR(flow_rule));
goto rule_err;
}
flows[rule_idx++] = flow_rule;
}
esw->fdb_table.offloads.send_to_vport_meta_rules = flows;
kvfree(spec);
return 0;
rule_err:
while (--rule_idx >= 0)
mlx5_del_flow_rules(flows[rule_idx]);
kvfree(spec);
alloc_err:
kvfree(flows);
return err;
}
static bool mlx5_eswitch_reg_c1_loopback_supported(struct mlx5_eswitch *esw)
{
return MLX5_CAP_ESW_FLOWTABLE(esw->dev, fdb_to_vport_reg_c_id) &
MLX5_FDB_TO_VPORT_REG_C_1;
}
static int esw_set_passing_vport_metadata(struct mlx5_eswitch *esw, bool enable)
{
u32 out[MLX5_ST_SZ_DW(query_esw_vport_context_out)] = {};
u32 min[MLX5_ST_SZ_DW(modify_esw_vport_context_in)] = {};
u32 in[MLX5_ST_SZ_DW(query_esw_vport_context_in)] = {};
u8 curr, wanted;
int err;
if (!mlx5_eswitch_reg_c1_loopback_supported(esw) &&
!mlx5_eswitch_vport_match_metadata_enabled(esw))
return 0;
MLX5_SET(query_esw_vport_context_in, in, opcode,
MLX5_CMD_OP_QUERY_ESW_VPORT_CONTEXT);
err = mlx5_cmd_exec_inout(esw->dev, query_esw_vport_context, in, out);
if (err)
return err;
curr = MLX5_GET(query_esw_vport_context_out, out,
esw_vport_context.fdb_to_vport_reg_c_id);
wanted = MLX5_FDB_TO_VPORT_REG_C_0;
if (mlx5_eswitch_reg_c1_loopback_supported(esw))
wanted |= MLX5_FDB_TO_VPORT_REG_C_1;
if (enable)
curr |= wanted;
else
curr &= ~wanted;
MLX5_SET(modify_esw_vport_context_in, min,
esw_vport_context.fdb_to_vport_reg_c_id, curr);
MLX5_SET(modify_esw_vport_context_in, min,
field_select.fdb_to_vport_reg_c_id, 1);
err = mlx5_eswitch_modify_esw_vport_context(esw->dev, 0, false, min);
if (!err) {
if (enable && (curr & MLX5_FDB_TO_VPORT_REG_C_1))
esw->flags |= MLX5_ESWITCH_REG_C1_LOOPBACK_ENABLED;
else
esw->flags &= ~MLX5_ESWITCH_REG_C1_LOOPBACK_ENABLED;
}
return err;
}
static void peer_miss_rules_setup(struct mlx5_eswitch *esw,
struct mlx5_core_dev *peer_dev,
struct mlx5_flow_spec *spec,
struct mlx5_flow_destination *dest)
{
void *misc;
if (mlx5_eswitch_vport_match_metadata_enabled(esw)) {
misc = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
misc_parameters_2);
MLX5_SET(fte_match_set_misc2, misc, metadata_reg_c_0,
mlx5_eswitch_get_vport_metadata_mask());
spec->match_criteria_enable = MLX5_MATCH_MISC_PARAMETERS_2;
} else {
misc = MLX5_ADDR_OF(fte_match_param, spec->match_value,
misc_parameters);
MLX5_SET(fte_match_set_misc, misc, source_eswitch_owner_vhca_id,
MLX5_CAP_GEN(peer_dev, vhca_id));
spec->match_criteria_enable = MLX5_MATCH_MISC_PARAMETERS;
misc = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
misc_parameters);
MLX5_SET_TO_ONES(fte_match_set_misc, misc, source_port);
MLX5_SET_TO_ONES(fte_match_set_misc, misc,
source_eswitch_owner_vhca_id);
}
dest->type = MLX5_FLOW_DESTINATION_TYPE_VPORT;
dest->vport.num = peer_dev->priv.eswitch->manager_vport;
dest->vport.vhca_id = MLX5_CAP_GEN(peer_dev, vhca_id);
dest->vport.flags |= MLX5_FLOW_DEST_VPORT_VHCA_ID;
}
static void esw_set_peer_miss_rule_source_port(struct mlx5_eswitch *esw,
struct mlx5_eswitch *peer_esw,
struct mlx5_flow_spec *spec,
u16 vport)
{
void *misc;
if (mlx5_eswitch_vport_match_metadata_enabled(esw)) {
misc = MLX5_ADDR_OF(fte_match_param, spec->match_value,
misc_parameters_2);
MLX5_SET(fte_match_set_misc2, misc, metadata_reg_c_0,
mlx5_eswitch_get_vport_metadata_for_match(peer_esw,
vport));
} else {
misc = MLX5_ADDR_OF(fte_match_param, spec->match_value,
misc_parameters);
MLX5_SET(fte_match_set_misc, misc, source_port, vport);
}
}
static int esw_add_fdb_peer_miss_rules(struct mlx5_eswitch *esw,
struct mlx5_core_dev *peer_dev)
{
struct mlx5_flow_destination dest = {};
struct mlx5_flow_act flow_act = {0};
struct mlx5_flow_handle **flows;
/* total vports is the same for both e-switches */
int nvports = esw->total_vports;
struct mlx5_flow_handle *flow;
struct mlx5_flow_spec *spec;
struct mlx5_vport *vport;
unsigned long i;
void *misc;
int err;
spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
if (!spec)
return -ENOMEM;
peer_miss_rules_setup(esw, peer_dev, spec, &dest);
flows = kvcalloc(nvports, sizeof(*flows), GFP_KERNEL);
if (!flows) {
err = -ENOMEM;
goto alloc_flows_err;
}
flow_act.action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
misc = MLX5_ADDR_OF(fte_match_param, spec->match_value,
misc_parameters);
if (mlx5_core_is_ecpf_esw_manager(esw->dev)) {
vport = mlx5_eswitch_get_vport(esw, MLX5_VPORT_PF);
esw_set_peer_miss_rule_source_port(esw, peer_dev->priv.eswitch,
spec, MLX5_VPORT_PF);
flow = mlx5_add_flow_rules(esw->fdb_table.offloads.slow_fdb,
spec, &flow_act, &dest, 1);
if (IS_ERR(flow)) {
err = PTR_ERR(flow);
goto add_pf_flow_err;
}
flows[vport->index] = flow;
}
if (mlx5_ecpf_vport_exists(esw->dev)) {
vport = mlx5_eswitch_get_vport(esw, MLX5_VPORT_ECPF);
MLX5_SET(fte_match_set_misc, misc, source_port, MLX5_VPORT_ECPF);
flow = mlx5_add_flow_rules(esw->fdb_table.offloads.slow_fdb,
spec, &flow_act, &dest, 1);
if (IS_ERR(flow)) {
err = PTR_ERR(flow);
goto add_ecpf_flow_err;
}
flows[vport->index] = flow;
}
mlx5_esw_for_each_vf_vport(esw, i, vport, mlx5_core_max_vfs(esw->dev)) {
esw_set_peer_miss_rule_source_port(esw,
peer_dev->priv.eswitch,
spec, vport->vport);
flow = mlx5_add_flow_rules(esw->fdb_table.offloads.slow_fdb,
spec, &flow_act, &dest, 1);
if (IS_ERR(flow)) {
err = PTR_ERR(flow);
goto add_vf_flow_err;
}
flows[vport->index] = flow;
}
esw->fdb_table.offloads.peer_miss_rules = flows;
kvfree(spec);
return 0;
add_vf_flow_err:
mlx5_esw_for_each_vf_vport(esw, i, vport, mlx5_core_max_vfs(esw->dev)) {
if (!flows[vport->index])
continue;
mlx5_del_flow_rules(flows[vport->index]);
}
if (mlx5_ecpf_vport_exists(esw->dev)) {
vport = mlx5_eswitch_get_vport(esw, MLX5_VPORT_ECPF);
mlx5_del_flow_rules(flows[vport->index]);
}
add_ecpf_flow_err:
if (mlx5_core_is_ecpf_esw_manager(esw->dev)) {
vport = mlx5_eswitch_get_vport(esw, MLX5_VPORT_PF);
mlx5_del_flow_rules(flows[vport->index]);
}
add_pf_flow_err:
esw_warn(esw->dev, "FDB: Failed to add peer miss flow rule err %d\n", err);
kvfree(flows);
alloc_flows_err:
kvfree(spec);
return err;
}
static void esw_del_fdb_peer_miss_rules(struct mlx5_eswitch *esw)
{
struct mlx5_flow_handle **flows;
struct mlx5_vport *vport;
unsigned long i;
flows = esw->fdb_table.offloads.peer_miss_rules;
mlx5_esw_for_each_vf_vport(esw, i, vport, mlx5_core_max_vfs(esw->dev))
mlx5_del_flow_rules(flows[vport->index]);
if (mlx5_ecpf_vport_exists(esw->dev)) {
vport = mlx5_eswitch_get_vport(esw, MLX5_VPORT_ECPF);
mlx5_del_flow_rules(flows[vport->index]);
}
if (mlx5_core_is_ecpf_esw_manager(esw->dev)) {
vport = mlx5_eswitch_get_vport(esw, MLX5_VPORT_PF);
mlx5_del_flow_rules(flows[vport->index]);
}
kvfree(flows);
}
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;
void *headers_c;
void *headers_v;
int err = 0;
u8 *dmac_c;
u8 *dmac_v;
spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
if (!spec) {
err = -ENOMEM;
goto out;
}
spec->match_criteria_enable = MLX5_MATCH_OUTER_HEADERS;
headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
outer_headers);
dmac_c = MLX5_ADDR_OF(fte_match_param, headers_c,
outer_headers.dmac_47_16);
dmac_c[0] = 0x01;
dest.type = MLX5_FLOW_DESTINATION_TYPE_VPORT;
dest.vport.num = esw->manager_vport;
flow_act.action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
flow_rule = mlx5_add_flow_rules(esw->fdb_table.offloads.slow_fdb,
spec, &flow_act, &dest, 1);
if (IS_ERR(flow_rule)) {
err = PTR_ERR(flow_rule);
esw_warn(esw->dev, "FDB: Failed to add unicast miss flow rule err %d\n", err);
goto out;
}
esw->fdb_table.offloads.miss_rule_uni = flow_rule;
headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
outer_headers);
dmac_v = MLX5_ADDR_OF(fte_match_param, headers_v,
outer_headers.dmac_47_16);
dmac_v[0] = 0x01;
flow_rule = mlx5_add_flow_rules(esw->fdb_table.offloads.slow_fdb,
spec, &flow_act, &dest, 1);
if (IS_ERR(flow_rule)) {
err = PTR_ERR(flow_rule);
esw_warn(esw->dev, "FDB: Failed to add multicast miss flow rule err %d\n", err);
mlx5_del_flow_rules(esw->fdb_table.offloads.miss_rule_uni);
goto out;
}
esw->fdb_table.offloads.miss_rule_multi = flow_rule;
out:
kvfree(spec);
return err;
}
struct mlx5_flow_handle *
esw_add_restore_rule(struct mlx5_eswitch *esw, u32 tag)
{
struct mlx5_flow_act flow_act = { .flags = FLOW_ACT_NO_APPEND, };
struct mlx5_flow_table *ft = esw->offloads.ft_offloads_restore;
struct mlx5_flow_context *flow_context;
struct mlx5_flow_handle *flow_rule;
struct mlx5_flow_destination dest;
struct mlx5_flow_spec *spec;
void *misc;
if (!mlx5_eswitch_reg_c1_loopback_supported(esw))
return ERR_PTR(-EOPNOTSUPP);
spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
if (!spec)
return ERR_PTR(-ENOMEM);
misc = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
misc_parameters_2);
MLX5_SET(fte_match_set_misc2, misc, metadata_reg_c_0,
ESW_REG_C0_USER_DATA_METADATA_MASK);
misc = MLX5_ADDR_OF(fte_match_param, spec->match_value,
misc_parameters_2);
MLX5_SET(fte_match_set_misc2, misc, metadata_reg_c_0, tag);
spec->match_criteria_enable = MLX5_MATCH_MISC_PARAMETERS_2;
flow_act.action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
flow_act.modify_hdr = esw->offloads.restore_copy_hdr_id;
flow_context = &spec->flow_context;
flow_context->flags |= FLOW_CONTEXT_HAS_TAG;
flow_context->flow_tag = tag;
dest.type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
dest.ft = esw->offloads.ft_offloads;
flow_rule = mlx5_add_flow_rules(ft, spec, &flow_act, &dest, 1);
kvfree(spec);
if (IS_ERR(flow_rule))
esw_warn(esw->dev,
"Failed to create restore rule for tag: %d, err(%d)\n",
tag, (int)PTR_ERR(flow_rule));
return flow_rule;
}
#define MAX_PF_SQ 256
#define MAX_SQ_NVPORTS 32
static void esw_set_flow_group_source_port(struct mlx5_eswitch *esw,
u32 *flow_group_in)
{
void *match_criteria = MLX5_ADDR_OF(create_flow_group_in,
flow_group_in,
match_criteria);
if (mlx5_eswitch_vport_match_metadata_enabled(esw)) {
MLX5_SET(create_flow_group_in, flow_group_in,
match_criteria_enable,
MLX5_MATCH_MISC_PARAMETERS_2);
MLX5_SET(fte_match_param, match_criteria,
misc_parameters_2.metadata_reg_c_0,
mlx5_eswitch_get_vport_metadata_mask());
} else {
MLX5_SET(create_flow_group_in, flow_group_in,
match_criteria_enable,
MLX5_MATCH_MISC_PARAMETERS);
MLX5_SET_TO_ONES(fte_match_param, match_criteria,
misc_parameters.source_port);
}
}
#if IS_ENABLED(CONFIG_MLX5_CLS_ACT)
static void esw_vport_tbl_put(struct mlx5_eswitch *esw)
{
struct mlx5_vport_tbl_attr attr;
struct mlx5_vport *vport;
unsigned long i;
attr.chain = 0;
attr.prio = 1;
mlx5_esw_for_each_vport(esw, i, vport) {
attr.vport = vport->vport;
attr.vport_ns = &mlx5_esw_vport_tbl_mirror_ns;
mlx5_esw_vporttbl_put(esw, &attr);
}
}
static int esw_vport_tbl_get(struct mlx5_eswitch *esw)
{
struct mlx5_vport_tbl_attr attr;
struct mlx5_flow_table *fdb;
struct mlx5_vport *vport;
unsigned long i;
attr.chain = 0;
attr.prio = 1;
mlx5_esw_for_each_vport(esw, i, vport) {
attr.vport = vport->vport;
attr.vport_ns = &mlx5_esw_vport_tbl_mirror_ns;
fdb = mlx5_esw_vporttbl_get(esw, &attr);
if (IS_ERR(fdb))
goto out;
}
return 0;
out:
esw_vport_tbl_put(esw);
return PTR_ERR(fdb);
}
#define fdb_modify_header_fwd_to_table_supported(esw) \
(MLX5_CAP_ESW_FLOWTABLE((esw)->dev, fdb_modify_header_fwd_to_table))
static void esw_init_chains_offload_flags(struct mlx5_eswitch *esw, u32 *flags)
{
struct mlx5_core_dev *dev = esw->dev;
if (MLX5_CAP_ESW_FLOWTABLE_FDB(dev, ignore_flow_level))
*flags |= MLX5_CHAINS_IGNORE_FLOW_LEVEL_SUPPORTED;
if (!MLX5_CAP_ESW_FLOWTABLE(dev, multi_fdb_encap) &&
esw->offloads.encap != DEVLINK_ESWITCH_ENCAP_MODE_NONE) {
*flags &= ~MLX5_CHAINS_AND_PRIOS_SUPPORTED;
esw_warn(dev, "Tc chains and priorities offload aren't supported, update firmware if needed\n");
} else if (!mlx5_eswitch_reg_c1_loopback_enabled(esw)) {
*flags &= ~MLX5_CHAINS_AND_PRIOS_SUPPORTED;
esw_warn(dev, "Tc chains and priorities offload aren't supported\n");
} else if (!fdb_modify_header_fwd_to_table_supported(esw)) {
/* Disabled when ttl workaround is needed, e.g
* when ESWITCH_IPV4_TTL_MODIFY_ENABLE = true in mlxconfig
*/
esw_warn(dev,
"Tc chains and priorities offload aren't supported, check firmware version, or mlxconfig settings\n");
*flags &= ~MLX5_CHAINS_AND_PRIOS_SUPPORTED;
} else {
*flags |= MLX5_CHAINS_AND_PRIOS_SUPPORTED;
esw_info(dev, "Supported tc chains and prios offload\n");
}
if (esw->offloads.encap != DEVLINK_ESWITCH_ENCAP_MODE_NONE)
*flags |= MLX5_CHAINS_FT_TUNNEL_SUPPORTED;
}
static int
esw_chains_create(struct mlx5_eswitch *esw, struct mlx5_flow_table *miss_fdb)
{
struct mlx5_core_dev *dev = esw->dev;
struct mlx5_flow_table *nf_ft, *ft;
struct mlx5_chains_attr attr = {};
struct mlx5_fs_chains *chains;
u32 fdb_max;
int err;
fdb_max = 1 << MLX5_CAP_ESW_FLOWTABLE_FDB(dev, log_max_ft_size);
esw_init_chains_offload_flags(esw, &attr.flags);
attr.ns = MLX5_FLOW_NAMESPACE_FDB;
attr.max_ft_sz = fdb_max;
attr.max_grp_num = esw->params.large_group_num;
attr.default_ft = miss_fdb;
attr.mapping = esw->offloads.reg_c0_obj_pool;
chains = mlx5_chains_create(dev, &attr);
if (IS_ERR(chains)) {
err = PTR_ERR(chains);
esw_warn(dev, "Failed to create fdb chains err(%d)\n", err);
return err;
}
esw->fdb_table.offloads.esw_chains_priv = chains;
/* Create tc_end_ft which is the always created ft chain */
nf_ft = mlx5_chains_get_table(chains, mlx5_chains_get_nf_ft_chain(chains),
1, 0);
if (IS_ERR(nf_ft)) {
err = PTR_ERR(nf_ft);
goto nf_ft_err;
}
/* Always open the root for fast path */
ft = mlx5_chains_get_table(chains, 0, 1, 0);
if (IS_ERR(ft)) {
err = PTR_ERR(ft);
goto level_0_err;
}
/* Open level 1 for split fdb rules now if prios isn't supported */
if (!mlx5_chains_prios_supported(chains)) {
err = esw_vport_tbl_get(esw);
if (err)
goto level_1_err;
}
mlx5_chains_set_end_ft(chains, nf_ft);
return 0;
level_1_err:
mlx5_chains_put_table(chains, 0, 1, 0);
level_0_err:
mlx5_chains_put_table(chains, mlx5_chains_get_nf_ft_chain(chains), 1, 0);
nf_ft_err:
mlx5_chains_destroy(chains);
esw->fdb_table.offloads.esw_chains_priv = NULL;
return err;
}
static void
esw_chains_destroy(struct mlx5_eswitch *esw, struct mlx5_fs_chains *chains)
{
if (!mlx5_chains_prios_supported(chains))
esw_vport_tbl_put(esw);
mlx5_chains_put_table(chains, 0, 1, 0);
mlx5_chains_put_table(chains, mlx5_chains_get_nf_ft_chain(chains), 1, 0);
mlx5_chains_destroy(chains);
}
#else /* CONFIG_MLX5_CLS_ACT */
static int
esw_chains_create(struct mlx5_eswitch *esw, struct mlx5_flow_table *miss_fdb)
{ return 0; }
static void
esw_chains_destroy(struct mlx5_eswitch *esw, struct mlx5_fs_chains *chains)
{}
#endif
static int esw_create_offloads_fdb_tables(struct mlx5_eswitch *esw)
{
int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in);
struct mlx5_flow_table_attr ft_attr = {};
int num_vfs, table_size, ix, err = 0;
struct mlx5_core_dev *dev = esw->dev;
struct mlx5_flow_namespace *root_ns;
struct mlx5_flow_table *fdb = NULL;
u32 flags = 0, *flow_group_in;
struct mlx5_flow_group *g;
void *match_criteria;
u8 *dmac;
esw_debug(esw->dev, "Create offloads FDB Tables\n");
flow_group_in = kvzalloc(inlen, GFP_KERNEL);
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->fdb_table.offloads.ns = root_ns;
err = mlx5_flow_namespace_set_mode(root_ns,
esw->dev->priv.steering->mode);
if (err) {
esw_warn(dev, "Failed to set FDB namespace steering mode\n");
goto ns_err;
}
/* To be strictly correct:
* MLX5_MAX_PORTS * (esw->total_vports * MAX_SQ_NVPORTS + MAX_PF_SQ)
* should be:
* esw->total_vports * MAX_SQ_NVPORTS + MAX_PF_SQ +
* peer_esw->total_vports * MAX_SQ_NVPORTS + MAX_PF_SQ
* but as the peer device might not be in switchdev mode it's not
* possible. We use the fact that by default FW sets max vfs and max sfs
* to the same value on both devices. If it needs to be changed in the future note
* the peer miss group should also be created based on the number of
* total vports of the peer (currently is also uses esw->total_vports).
*/
table_size = MLX5_MAX_PORTS * (esw->total_vports * MAX_SQ_NVPORTS + MAX_PF_SQ) +
MLX5_ESW_MISS_FLOWS + esw->total_vports + esw->esw_funcs.num_vfs;
/* create the slow path fdb with encap set, so further table instances
* can be created at run time while VFs are probed if the FW allows that.
*/
if (esw->offloads.encap != DEVLINK_ESWITCH_ENCAP_MODE_NONE)
flags |= (MLX5_FLOW_TABLE_TUNNEL_EN_REFORMAT |
MLX5_FLOW_TABLE_TUNNEL_EN_DECAP);
ft_attr.flags = flags;
ft_attr.max_fte = table_size;
ft_attr.prio = FDB_SLOW_PATH;
fdb = mlx5_create_flow_table(root_ns, &ft_attr);
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.slow_fdb = fdb;
/* Create empty TC-miss managed table. This allows plugging in following
* priorities without directly exposing their level 0 table to
* eswitch_offloads and passing it as miss_fdb to following call to
* esw_chains_create().
*/
memset(&ft_attr, 0, sizeof(ft_attr));
ft_attr.prio = FDB_TC_MISS;
esw->fdb_table.offloads.tc_miss_table = mlx5_create_flow_table(root_ns, &ft_attr);
if (IS_ERR(esw->fdb_table.offloads.tc_miss_table)) {
err = PTR_ERR(esw->fdb_table.offloads.tc_miss_table);
esw_warn(dev, "Failed to create TC miss FDB Table err %d\n", err);
goto tc_miss_table_err;
}
err = esw_chains_create(esw, esw->fdb_table.offloads.tc_miss_table);
if (err) {
esw_warn(dev, "Failed to open fdb chains err(%d)\n", err);
goto fdb_chains_err;
}
/* create send-to-vport group */
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);
if (MLX5_CAP_ESW(esw->dev, merged_eswitch)) {
MLX5_SET_TO_ONES(fte_match_param, match_criteria,
misc_parameters.source_eswitch_owner_vhca_id);
MLX5_SET(create_flow_group_in, flow_group_in,
source_eswitch_owner_vhca_id_valid, 1);
}
/* See comment above table_size calculation */
ix = MLX5_MAX_PORTS * (esw->total_vports * MAX_SQ_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;
if (esw_src_port_rewrite_supported(esw)) {
/* meta send to vport */
memset(flow_group_in, 0, inlen);
MLX5_SET(create_flow_group_in, flow_group_in, match_criteria_enable,
MLX5_MATCH_MISC_PARAMETERS_2);
match_criteria = MLX5_ADDR_OF(create_flow_group_in, flow_group_in, match_criteria);
MLX5_SET(fte_match_param, match_criteria,
misc_parameters_2.metadata_reg_c_0,
mlx5_eswitch_get_vport_metadata_mask());
MLX5_SET(fte_match_param, match_criteria,
misc_parameters_2.metadata_reg_c_1, ESW_TUN_MASK);
num_vfs = esw->esw_funcs.num_vfs;
if (num_vfs) {
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 + num_vfs - 1);
ix += num_vfs;
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 meta flow group err(%d)\n",
err);
goto send_vport_meta_err;
}
esw->fdb_table.offloads.send_to_vport_meta_grp = g;
err = mlx5_eswitch_add_send_to_vport_meta_rules(esw);
if (err)
goto meta_rule_err;
}
}
if (MLX5_CAP_ESW(esw->dev, merged_eswitch)) {
/* create peer esw miss group */
memset(flow_group_in, 0, inlen);
esw_set_flow_group_source_port(esw, flow_group_in);
if (!mlx5_eswitch_vport_match_metadata_enabled(esw)) {
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_eswitch_owner_vhca_id);
MLX5_SET(create_flow_group_in, flow_group_in,
source_eswitch_owner_vhca_id_valid, 1);
}
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 + esw->total_vports - 1);
ix += esw->total_vports;
g = mlx5_create_flow_group(fdb, flow_group_in);
if (IS_ERR(g)) {
err = PTR_ERR(g);
esw_warn(dev, "Failed to create peer miss flow group err(%d)\n", err);
goto peer_miss_err;
}
esw->fdb_table.offloads.peer_miss_grp = g;
}
/* create miss group */
memset(flow_group_in, 0, inlen);
MLX5_SET(create_flow_group_in, flow_group_in, match_criteria_enable,
MLX5_MATCH_OUTER_HEADERS);
match_criteria = MLX5_ADDR_OF(create_flow_group_in, flow_group_in,
match_criteria);
dmac = MLX5_ADDR_OF(fte_match_param, match_criteria,
outer_headers.dmac_47_16);
dmac[0] = 0x01;
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 + MLX5_ESW_MISS_FLOWS);
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;
kvfree(flow_group_in);
return 0;
miss_rule_err:
mlx5_destroy_flow_group(esw->fdb_table.offloads.miss_grp);
miss_err:
if (MLX5_CAP_ESW(esw->dev, merged_eswitch))
mlx5_destroy_flow_group(esw->fdb_table.offloads.peer_miss_grp);
peer_miss_err:
mlx5_eswitch_del_send_to_vport_meta_rules(esw);
meta_rule_err:
if (esw->fdb_table.offloads.send_to_vport_meta_grp)
mlx5_destroy_flow_group(esw->fdb_table.offloads.send_to_vport_meta_grp);
send_vport_meta_err:
mlx5_destroy_flow_group(esw->fdb_table.offloads.send_to_vport_grp);
send_vport_err:
esw_chains_destroy(esw, esw_chains(esw));
fdb_chains_err:
mlx5_destroy_flow_table(esw->fdb_table.offloads.tc_miss_table);
tc_miss_table_err:
mlx5_destroy_flow_table(esw->fdb_table.offloads.slow_fdb);
slow_fdb_err:
/* Holds true only as long as DMFS is the default */
mlx5_flow_namespace_set_mode(root_ns, MLX5_FLOW_STEERING_MODE_DMFS);
ns_err:
kvfree(flow_group_in);
return err;
}
static void esw_destroy_offloads_fdb_tables(struct mlx5_eswitch *esw)
{
if (!esw->fdb_table.offloads.slow_fdb)
return;
esw_debug(esw->dev, "Destroy offloads FDB Tables\n");
mlx5_del_flow_rules(esw->fdb_table.offloads.miss_rule_multi);
mlx5_del_flow_rules(esw->fdb_table.offloads.miss_rule_uni);
mlx5_eswitch_del_send_to_vport_meta_rules(esw);
mlx5_destroy_flow_group(esw->fdb_table.offloads.send_to_vport_grp);
if (esw->fdb_table.offloads.send_to_vport_meta_grp)
mlx5_destroy_flow_group(esw->fdb_table.offloads.send_to_vport_meta_grp);
if (MLX5_CAP_ESW(esw->dev, merged_eswitch))
mlx5_destroy_flow_group(esw->fdb_table.offloads.peer_miss_grp);
mlx5_destroy_flow_group(esw->fdb_table.offloads.miss_grp);
esw_chains_destroy(esw, esw_chains(esw));
mlx5_destroy_flow_table(esw->fdb_table.offloads.tc_miss_table);
mlx5_destroy_flow_table(esw->fdb_table.offloads.slow_fdb);
/* Holds true only as long as DMFS is the default */
mlx5_flow_namespace_set_mode(esw->fdb_table.offloads.ns,
MLX5_FLOW_STEERING_MODE_DMFS);
atomic64_set(&esw->user_count, 0);
}
static int esw_get_offloads_ft_size(struct mlx5_eswitch *esw)
{
int nvports;
nvports = esw->total_vports + MLX5_ESW_MISS_FLOWS;
if (mlx5e_tc_int_port_supported(esw))
nvports += MLX5E_TC_MAX_INT_PORT_NUM;
return nvports;
}
static int esw_create_offloads_table(struct mlx5_eswitch *esw)
{
struct mlx5_flow_table_attr ft_attr = {};
struct mlx5_core_dev *dev = esw->dev;
struct mlx5_flow_table *ft_offloads;
struct mlx5_flow_namespace *ns;
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_attr.max_fte = esw_get_offloads_ft_size(esw);
ft_attr.prio = 1;
ft_offloads = mlx5_create_flow_table(ns, &ft_attr);
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;
u32 *flow_group_in;
int nvports;
int err = 0;
nvports = esw_get_offloads_ft_size(esw);
flow_group_in = kvzalloc(inlen, GFP_KERNEL);
if (!flow_group_in)
return -ENOMEM;
/* create vport rx group */
esw_set_flow_group_source_port(esw, flow_group_in);
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:
kvfree(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, u16 vport,
struct mlx5_flow_destination *dest)
{
struct mlx5_flow_act flow_act = {0};
struct mlx5_flow_handle *flow_rule;
struct mlx5_flow_spec *spec;
void *misc;
spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
if (!spec) {
flow_rule = ERR_PTR(-ENOMEM);
goto out;
}
if (mlx5_eswitch_vport_match_metadata_enabled(esw)) {
misc = MLX5_ADDR_OF(fte_match_param, spec->match_value, misc_parameters_2);
MLX5_SET(fte_match_set_misc2, misc, metadata_reg_c_0,
mlx5_eswitch_get_vport_metadata_for_match(esw, vport));
misc = MLX5_ADDR_OF(fte_match_param, spec->match_criteria, misc_parameters_2);
MLX5_SET(fte_match_set_misc2, misc, metadata_reg_c_0,
mlx5_eswitch_get_vport_metadata_mask());
spec->match_criteria_enable = MLX5_MATCH_MISC_PARAMETERS_2;
} else {
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;
}
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 mlx5_eswitch_inline_mode_get(struct mlx5_eswitch *esw, u8 *mode)
{
u8 prev_mlx5_mode, mlx5_mode = MLX5_INLINE_MODE_L2;
struct mlx5_core_dev *dev = esw->dev;
struct mlx5_vport *vport;
unsigned long i;
if (!MLX5_CAP_GEN(dev, vport_group_manager))
return -EOPNOTSUPP;
if (esw->mode == MLX5_ESWITCH_NONE)
return -EOPNOTSUPP;
switch (MLX5_CAP_ETH(dev, wqe_inline_mode)) {
case MLX5_CAP_INLINE_MODE_NOT_REQUIRED:
mlx5_mode = MLX5_INLINE_MODE_NONE;
goto out;
case MLX5_CAP_INLINE_MODE_L2:
mlx5_mode = MLX5_INLINE_MODE_L2;
goto out;
case MLX5_CAP_INLINE_MODE_VPORT_CONTEXT:
goto query_vports;
}
query_vports:
mlx5_query_nic_vport_min_inline(dev, esw->first_host_vport, &prev_mlx5_mode);
mlx5_esw_for_each_host_func_vport(esw, i, vport, esw->esw_funcs.num_vfs) {
mlx5_query_nic_vport_min_inline(dev, vport->vport, &mlx5_mode);
if (prev_mlx5_mode != mlx5_mode)
return -EINVAL;
prev_mlx5_mode = mlx5_mode;
}
out:
*mode = mlx5_mode;
return 0;
}
static void esw_destroy_restore_table(struct mlx5_eswitch *esw)
{
struct mlx5_esw_offload *offloads = &esw->offloads;
if (!mlx5_eswitch_reg_c1_loopback_supported(esw))
return;
mlx5_modify_header_dealloc(esw->dev, offloads->restore_copy_hdr_id);
mlx5_destroy_flow_group(offloads->restore_group);
mlx5_destroy_flow_table(offloads->ft_offloads_restore);
}
static int esw_create_restore_table(struct mlx5_eswitch *esw)
{
u8 modact[MLX5_UN_SZ_BYTES(set_add_copy_action_in_auto)] = {};
int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in);
struct mlx5_flow_table_attr ft_attr = {};
struct mlx5_core_dev *dev = esw->dev;
struct mlx5_flow_namespace *ns;
struct mlx5_modify_hdr *mod_hdr;
void *match_criteria, *misc;
struct mlx5_flow_table *ft;
struct mlx5_flow_group *g;
u32 *flow_group_in;
int err = 0;
if (!mlx5_eswitch_reg_c1_loopback_supported(esw))
return 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;
}
flow_group_in = kvzalloc(inlen, GFP_KERNEL);
if (!flow_group_in) {
err = -ENOMEM;
goto out_free;
}
ft_attr.max_fte = 1 << ESW_REG_C0_USER_DATA_METADATA_BITS;
ft = mlx5_create_flow_table(ns, &ft_attr);
if (IS_ERR(ft)) {
err = PTR_ERR(ft);
esw_warn(esw->dev, "Failed to create restore table, err %d\n",
err);
goto out_free;
}
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_2);
MLX5_SET(fte_match_set_misc2, misc, metadata_reg_c_0,
ESW_REG_C0_USER_DATA_METADATA_MASK);
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,
ft_attr.max_fte - 1);
MLX5_SET(create_flow_group_in, flow_group_in, match_criteria_enable,
MLX5_MATCH_MISC_PARAMETERS_2);
g = mlx5_create_flow_group(ft, flow_group_in);
if (IS_ERR(g)) {
err = PTR_ERR(g);
esw_warn(dev, "Failed to create restore flow group, err: %d\n",
err);
goto err_group;
}
MLX5_SET(copy_action_in, modact, action_type, MLX5_ACTION_TYPE_COPY);
MLX5_SET(copy_action_in, modact, src_field,
MLX5_ACTION_IN_FIELD_METADATA_REG_C_1);
MLX5_SET(copy_action_in, modact, dst_field,
MLX5_ACTION_IN_FIELD_METADATA_REG_B);
mod_hdr = mlx5_modify_header_alloc(esw->dev,
MLX5_FLOW_NAMESPACE_KERNEL, 1,
modact);
if (IS_ERR(mod_hdr)) {
err = PTR_ERR(mod_hdr);
esw_warn(dev, "Failed to create restore mod header, err: %d\n",
err);
goto err_mod_hdr;
}
esw->offloads.ft_offloads_restore = ft;
esw->offloads.restore_group = g;
esw->offloads.restore_copy_hdr_id = mod_hdr;
kvfree(flow_group_in);
return 0;
err_mod_hdr:
mlx5_destroy_flow_group(g);
err_group:
mlx5_destroy_flow_table(ft);
out_free:
kvfree(flow_group_in);
return err;
}
static int esw_offloads_start(struct mlx5_eswitch *esw,
struct netlink_ext_ack *extack)
{
int err, err1;
mlx5_eswitch_disable_locked(esw, false);
err = mlx5_eswitch_enable_locked(esw, MLX5_ESWITCH_OFFLOADS,
esw->dev->priv.sriov.num_vfs);
if (err) {
NL_SET_ERR_MSG_MOD(extack,
"Failed setting eswitch to offloads");
err1 = mlx5_eswitch_enable_locked(esw, MLX5_ESWITCH_LEGACY,
MLX5_ESWITCH_IGNORE_NUM_VFS);
if (err1) {
NL_SET_ERR_MSG_MOD(extack,
"Failed setting eswitch back to legacy");
}
}
if (esw->offloads.inline_mode == MLX5_INLINE_MODE_NONE) {
if (mlx5_eswitch_inline_mode_get(esw,
&esw->offloads.inline_mode)) {
esw->offloads.inline_mode = MLX5_INLINE_MODE_L2;
NL_SET_ERR_MSG_MOD(extack,
"Inline mode is different between vports");
}
}
return err;
}
static void mlx5_esw_offloads_rep_mark_set(struct mlx5_eswitch *esw,
struct mlx5_eswitch_rep *rep,
xa_mark_t mark)
{
bool mark_set;
/* Copy the mark from vport to its rep */
mark_set = xa_get_mark(&esw->vports, rep->vport, mark);
if (mark_set)
xa_set_mark(&esw->offloads.vport_reps, rep->vport, mark);
}
static int mlx5_esw_offloads_rep_init(struct mlx5_eswitch *esw, const struct mlx5_vport *vport)
{
struct mlx5_eswitch_rep *rep;
int rep_type;
int err;
rep = kzalloc(sizeof(*rep), GFP_KERNEL);
if (!rep)
return -ENOMEM;
rep->vport = vport->vport;
rep->vport_index = vport->index;
for (rep_type = 0; rep_type < NUM_REP_TYPES; rep_type++)
atomic_set(&rep->rep_data[rep_type].state, REP_UNREGISTERED);
err = xa_insert(&esw->offloads.vport_reps, rep->vport, rep, GFP_KERNEL);
if (err)
goto insert_err;
mlx5_esw_offloads_rep_mark_set(esw, rep, MLX5_ESW_VPT_HOST_FN);
mlx5_esw_offloads_rep_mark_set(esw, rep, MLX5_ESW_VPT_VF);
mlx5_esw_offloads_rep_mark_set(esw, rep, MLX5_ESW_VPT_SF);
return 0;
insert_err:
kfree(rep);
return err;
}
static void mlx5_esw_offloads_rep_cleanup(struct mlx5_eswitch *esw,
struct mlx5_eswitch_rep *rep)
{
xa_erase(&esw->offloads.vport_reps, rep->vport);
kfree(rep);
}
void esw_offloads_cleanup_reps(struct mlx5_eswitch *esw)
{
struct mlx5_eswitch_rep *rep;
unsigned long i;
mlx5_esw_for_each_rep(esw, i, rep)
mlx5_esw_offloads_rep_cleanup(esw, rep);
xa_destroy(&esw->offloads.vport_reps);
}
int esw_offloads_init_reps(struct mlx5_eswitch *esw)
{
struct mlx5_vport *vport;
unsigned long i;
int err;
xa_init(&esw->offloads.vport_reps);
mlx5_esw_for_each_vport(esw, i, vport) {
err = mlx5_esw_offloads_rep_init(esw, vport);
if (err)
goto err;
}
return 0;
err:
esw_offloads_cleanup_reps(esw);
return err;
}
static void __esw_offloads_unload_rep(struct mlx5_eswitch *esw,
struct mlx5_eswitch_rep *rep, u8 rep_type)
{
if (atomic_cmpxchg(&rep->rep_data[rep_type].state,
REP_LOADED, REP_REGISTERED) == REP_LOADED)
esw->offloads.rep_ops[rep_type]->unload(rep);
}
static void __unload_reps_sf_vport(struct mlx5_eswitch *esw, u8 rep_type)
{
struct mlx5_eswitch_rep *rep;
unsigned long i;
mlx5_esw_for_each_sf_rep(esw, i, rep)
__esw_offloads_unload_rep(esw, rep, rep_type);
}
static void __unload_reps_all_vport(struct mlx5_eswitch *esw, u8 rep_type)
{
struct mlx5_eswitch_rep *rep;
unsigned long i;
__unload_reps_sf_vport(esw, rep_type);
mlx5_esw_for_each_vf_rep(esw, i, rep)
__esw_offloads_unload_rep(esw, rep, rep_type);
if (mlx5_ecpf_vport_exists(esw->dev)) {
rep = mlx5_eswitch_get_rep(esw, MLX5_VPORT_ECPF);
__esw_offloads_unload_rep(esw, rep, rep_type);
}
if (mlx5_core_is_ecpf_esw_manager(esw->dev)) {
rep = mlx5_eswitch_get_rep(esw, MLX5_VPORT_PF);
__esw_offloads_unload_rep(esw, rep, rep_type);
}
rep = mlx5_eswitch_get_rep(esw, MLX5_VPORT_UPLINK);
__esw_offloads_unload_rep(esw, rep, rep_type);
}
int mlx5_esw_offloads_rep_load(struct mlx5_eswitch *esw, u16 vport_num)
{
struct mlx5_eswitch_rep *rep;
int rep_type;
int err;
rep = mlx5_eswitch_get_rep(esw, vport_num);
for (rep_type = 0; rep_type < NUM_REP_TYPES; rep_type++)
if (atomic_cmpxchg(&rep->rep_data[rep_type].state,
REP_REGISTERED, REP_LOADED) == REP_REGISTERED) {
err = esw->offloads.rep_ops[rep_type]->load(esw->dev, rep);
if (err)
goto err_reps;
}
return 0;
err_reps:
atomic_set(&rep->rep_data[rep_type].state, REP_REGISTERED);
for (--rep_type; rep_type >= 0; rep_type--)
__esw_offloads_unload_rep(esw, rep, rep_type);
return err;
}
void mlx5_esw_offloads_rep_unload(struct mlx5_eswitch *esw, u16 vport_num)
{
struct mlx5_eswitch_rep *rep;
int rep_type;
rep = mlx5_eswitch_get_rep(esw, vport_num);
for (rep_type = NUM_REP_TYPES - 1; rep_type >= 0; rep_type--)
__esw_offloads_unload_rep(esw, rep, rep_type);
}
int esw_offloads_load_rep(struct mlx5_eswitch *esw, u16 vport_num)
{
int err;
if (esw->mode != MLX5_ESWITCH_OFFLOADS)
return 0;
if (vport_num != MLX5_VPORT_UPLINK) {
err = mlx5_esw_offloads_devlink_port_register(esw, vport_num);
if (err)
return err;
}
err = mlx5_esw_offloads_rep_load(esw, vport_num);
if (err)
goto load_err;
return err;
load_err:
if (vport_num != MLX5_VPORT_UPLINK)
mlx5_esw_offloads_devlink_port_unregister(esw, vport_num);
return err;
}
void esw_offloads_unload_rep(struct mlx5_eswitch *esw, u16 vport_num)
{
if (esw->mode != MLX5_ESWITCH_OFFLOADS)
return;
mlx5_esw_offloads_rep_unload(esw, vport_num);
if (vport_num != MLX5_VPORT_UPLINK)
mlx5_esw_offloads_devlink_port_unregister(esw, vport_num);
}
static int esw_set_uplink_slave_ingress_root(struct mlx5_core_dev *master,
struct mlx5_core_dev *slave)
{
u32 in[MLX5_ST_SZ_DW(set_flow_table_root_in)] = {};
u32 out[MLX5_ST_SZ_DW(set_flow_table_root_out)] = {};
struct mlx5_eswitch *esw;
struct mlx5_flow_root_namespace *root;
struct mlx5_flow_namespace *ns;
struct mlx5_vport *vport;
int err;
MLX5_SET(set_flow_table_root_in, in, opcode,
MLX5_CMD_OP_SET_FLOW_TABLE_ROOT);
MLX5_SET(set_flow_table_root_in, in, table_type, FS_FT_ESW_INGRESS_ACL);
MLX5_SET(set_flow_table_root_in, in, other_vport, 1);
MLX5_SET(set_flow_table_root_in, in, vport_number, MLX5_VPORT_UPLINK);
if (master) {
esw = master->priv.eswitch;
vport = mlx5_eswitch_get_vport(esw, MLX5_VPORT_UPLINK);
MLX5_SET(set_flow_table_root_in, in, table_of_other_vport, 1);
MLX5_SET(set_flow_table_root_in, in, table_vport_number,
MLX5_VPORT_UPLINK);
ns = mlx5_get_flow_vport_acl_namespace(master,
MLX5_FLOW_NAMESPACE_ESW_INGRESS,
vport->index);
root = find_root(&ns->node);
mutex_lock(&root->chain_lock);
MLX5_SET(set_flow_table_root_in, in,
table_eswitch_owner_vhca_id_valid, 1);
MLX5_SET(set_flow_table_root_in, in,
table_eswitch_owner_vhca_id,
MLX5_CAP_GEN(master, vhca_id));
MLX5_SET(set_flow_table_root_in, in, table_id,
root->root_ft->id);
} else {
esw = slave->priv.eswitch;
vport = mlx5_eswitch_get_vport(esw, MLX5_VPORT_UPLINK);
ns = mlx5_get_flow_vport_acl_namespace(slave,
MLX5_FLOW_NAMESPACE_ESW_INGRESS,
vport->index);
root = find_root(&ns->node);
mutex_lock(&root->chain_lock);
MLX5_SET(set_flow_table_root_in, in, table_id, root->root_ft->id);
}
err = mlx5_cmd_exec(slave, in, sizeof(in), out, sizeof(out));
mutex_unlock(&root->chain_lock);
return err;
}
static int esw_set_slave_root_fdb(struct mlx5_core_dev *master,
struct mlx5_core_dev *slave)
{
u32 in[MLX5_ST_SZ_DW(set_flow_table_root_in)] = {};
u32 out[MLX5_ST_SZ_DW(set_flow_table_root_out)] = {};
struct mlx5_flow_root_namespace *root;
struct mlx5_flow_namespace *ns;
int err;
MLX5_SET(set_flow_table_root_in, in, opcode,
MLX5_CMD_OP_SET_FLOW_TABLE_ROOT);
MLX5_SET(set_flow_table_root_in, in, table_type,
FS_FT_FDB);
if (master) {
ns = mlx5_get_flow_namespace(master,
MLX5_FLOW_NAMESPACE_FDB);
root = find_root(&ns->node);
mutex_lock(&root->chain_lock);
MLX5_SET(set_flow_table_root_in, in,
table_eswitch_owner_vhca_id_valid, 1);
MLX5_SET(set_flow_table_root_in, in,
table_eswitch_owner_vhca_id,
MLX5_CAP_GEN(master, vhca_id));
MLX5_SET(set_flow_table_root_in, in, table_id,
root->root_ft->id);
} else {
ns = mlx5_get_flow_namespace(slave,
MLX5_FLOW_NAMESPACE_FDB);
root = find_root(&ns->node);
mutex_lock(&root->chain_lock);
MLX5_SET(set_flow_table_root_in, in, table_id,
root->root_ft->id);
}
err = mlx5_cmd_exec(slave, in, sizeof(in), out, sizeof(out));
mutex_unlock(&root->chain_lock);
return err;
}
static int __esw_set_master_egress_rule(struct mlx5_core_dev *master,
struct mlx5_core_dev *slave,
struct mlx5_vport *vport,
struct mlx5_flow_table *acl)
{
struct mlx5_flow_handle *flow_rule = NULL;
struct mlx5_flow_destination dest = {};
struct mlx5_flow_act flow_act = {};
struct mlx5_flow_spec *spec;
int err = 0;
void *misc;
spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
if (!spec)
return -ENOMEM;
spec->match_criteria_enable = MLX5_MATCH_MISC_PARAMETERS;
misc = MLX5_ADDR_OF(fte_match_param, spec->match_value,
misc_parameters);
MLX5_SET(fte_match_set_misc, misc, source_port, MLX5_VPORT_UPLINK);
MLX5_SET(fte_match_set_misc, misc, source_eswitch_owner_vhca_id,
MLX5_CAP_GEN(slave, vhca_id));
misc = MLX5_ADDR_OF(fte_match_param, spec->match_criteria, misc_parameters);
MLX5_SET_TO_ONES(fte_match_set_misc, misc, source_port);
MLX5_SET_TO_ONES(fte_match_set_misc, misc,
source_eswitch_owner_vhca_id);
flow_act.action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
dest.type = MLX5_FLOW_DESTINATION_TYPE_VPORT;
dest.vport.num = slave->priv.eswitch->manager_vport;
dest.vport.vhca_id = MLX5_CAP_GEN(slave, vhca_id);
dest.vport.flags |= MLX5_FLOW_DEST_VPORT_VHCA_ID;
flow_rule = mlx5_add_flow_rules(acl, spec, &flow_act,
&dest, 1);
if (IS_ERR(flow_rule))
err = PTR_ERR(flow_rule);
else
vport->egress.offloads.bounce_rule = flow_rule;
kvfree(spec);
return err;
}
static int esw_set_master_egress_rule(struct mlx5_core_dev *master,
struct mlx5_core_dev *slave)
{
int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in);
struct mlx5_eswitch *esw = master->priv.eswitch;
struct mlx5_flow_table_attr ft_attr = {
.max_fte = 1, .prio = 0, .level = 0,
.flags = MLX5_FLOW_TABLE_OTHER_VPORT,
};
struct mlx5_flow_namespace *egress_ns;
struct mlx5_flow_table *acl;
struct mlx5_flow_group *g;
struct mlx5_vport *vport;
void *match_criteria;
u32 *flow_group_in;
int err;
vport = mlx5_eswitch_get_vport(esw, esw->manager_vport);
if (IS_ERR(vport))
return PTR_ERR(vport);
egress_ns = mlx5_get_flow_vport_acl_namespace(master,
MLX5_FLOW_NAMESPACE_ESW_EGRESS,
vport->index);
if (!egress_ns)
return -EINVAL;
if (vport->egress.acl)
return -EINVAL;
flow_group_in = kvzalloc(inlen, GFP_KERNEL);
if (!flow_group_in)
return -ENOMEM;
acl = mlx5_create_vport_flow_table(egress_ns, &ft_attr, vport->vport);
if (IS_ERR(acl)) {
err = PTR_ERR(acl);
goto out;
}
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_port);
MLX5_SET_TO_ONES(fte_match_param, match_criteria,
misc_parameters.source_eswitch_owner_vhca_id);
MLX5_SET(create_flow_group_in, flow_group_in, match_criteria_enable,
MLX5_MATCH_MISC_PARAMETERS);
MLX5_SET(create_flow_group_in, flow_group_in,
source_eswitch_owner_vhca_id_valid, 1);
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, 0);
g = mlx5_create_flow_group(acl, flow_group_in);
if (IS_ERR(g)) {
err = PTR_ERR(g);
goto err_group;
}
err = __esw_set_master_egress_rule(master, slave, vport, acl);
if (err)
goto err_rule;
vport->egress.acl = acl;
vport->egress.offloads.bounce_grp = g;
kvfree(flow_group_in);
return 0;
err_rule:
mlx5_destroy_flow_group(g);
err_group:
mlx5_destroy_flow_table(acl);
out:
kvfree(flow_group_in);
return err;
}
static void esw_unset_master_egress_rule(struct mlx5_core_dev *dev)
{
struct mlx5_vport *vport;
vport = mlx5_eswitch_get_vport(dev->priv.eswitch,
dev->priv.eswitch->manager_vport);
esw_acl_egress_ofld_cleanup(vport);
}
int mlx5_eswitch_offloads_config_single_fdb(struct mlx5_eswitch *master_esw,
struct mlx5_eswitch *slave_esw)
{
int err;
err = esw_set_uplink_slave_ingress_root(master_esw->dev,
slave_esw->dev);
if (err)
return -EINVAL;
err = esw_set_slave_root_fdb(master_esw->dev,
slave_esw->dev);
if (err)
goto err_fdb;
err = esw_set_master_egress_rule(master_esw->dev,
slave_esw->dev);
if (err)
goto err_acl;
return err;
err_acl:
esw_set_slave_root_fdb(NULL, slave_esw->dev);
err_fdb:
esw_set_uplink_slave_ingress_root(NULL, slave_esw->dev);
return err;
}
void mlx5_eswitch_offloads_destroy_single_fdb(struct mlx5_eswitch *master_esw,
struct mlx5_eswitch *slave_esw)
{
esw_unset_master_egress_rule(master_esw->dev);
esw_set_slave_root_fdb(NULL, slave_esw->dev);
esw_set_uplink_slave_ingress_root(NULL, slave_esw->dev);
}
#define ESW_OFFLOADS_DEVCOM_PAIR (0)
#define ESW_OFFLOADS_DEVCOM_UNPAIR (1)
static void mlx5_esw_offloads_rep_event_unpair(struct mlx5_eswitch *esw)
{
const struct mlx5_eswitch_rep_ops *ops;
struct mlx5_eswitch_rep *rep;
unsigned long i;
u8 rep_type;
mlx5_esw_for_each_rep(esw, i, rep) {
rep_type = NUM_REP_TYPES;
while (rep_type--) {
ops = esw->offloads.rep_ops[rep_type];
if (atomic_read(&rep->rep_data[rep_type].state) == REP_LOADED &&
ops->event)
ops->event(esw, rep, MLX5_SWITCHDEV_EVENT_UNPAIR, NULL);
}
}
}
static void mlx5_esw_offloads_unpair(struct mlx5_eswitch *esw)
{
#if IS_ENABLED(CONFIG_MLX5_CLS_ACT)
mlx5e_tc_clean_fdb_peer_flows(esw);
#endif
mlx5_esw_offloads_rep_event_unpair(esw);
esw_del_fdb_peer_miss_rules(esw);
}
static int mlx5_esw_offloads_pair(struct mlx5_eswitch *esw,
struct mlx5_eswitch *peer_esw)
{
const struct mlx5_eswitch_rep_ops *ops;
struct mlx5_eswitch_rep *rep;
unsigned long i;
u8 rep_type;
int err;
err = esw_add_fdb_peer_miss_rules(esw, peer_esw->dev);
if (err)
return err;
mlx5_esw_for_each_rep(esw, i, rep) {
for (rep_type = 0; rep_type < NUM_REP_TYPES; rep_type++) {
ops = esw->offloads.rep_ops[rep_type];
if (atomic_read(&rep->rep_data[rep_type].state) == REP_LOADED &&
ops->event) {
err = ops->event(esw, rep, MLX5_SWITCHDEV_EVENT_PAIR, peer_esw);
if (err)
goto err_out;
}
}
}
return 0;
err_out:
mlx5_esw_offloads_unpair(esw);
return err;
}
static int mlx5_esw_offloads_set_ns_peer(struct mlx5_eswitch *esw,
struct mlx5_eswitch *peer_esw,
bool pair)
{
struct mlx5_flow_root_namespace *peer_ns;
struct mlx5_flow_root_namespace *ns;
int err;
peer_ns = peer_esw->dev->priv.steering->fdb_root_ns;
ns = esw->dev->priv.steering->fdb_root_ns;
if (pair) {
err = mlx5_flow_namespace_set_peer(ns, peer_ns);
if (err)
return err;
err = mlx5_flow_namespace_set_peer(peer_ns, ns);
if (err) {
mlx5_flow_namespace_set_peer(ns, NULL);
return err;
}
} else {
mlx5_flow_namespace_set_peer(ns, NULL);
mlx5_flow_namespace_set_peer(peer_ns, NULL);
}
return 0;
}
static int mlx5_esw_offloads_devcom_event(int event,
void *my_data,
void *event_data)
{
struct mlx5_eswitch *esw = my_data;
struct mlx5_devcom *devcom = esw->dev->priv.devcom;
struct mlx5_eswitch *peer_esw = event_data;
int err;
switch (event) {
case ESW_OFFLOADS_DEVCOM_PAIR:
if (mlx5_get_next_phys_dev(esw->dev) != peer_esw->dev)
break;
if (mlx5_eswitch_vport_match_metadata_enabled(esw) !=
mlx5_eswitch_vport_match_metadata_enabled(peer_esw))
break;
err = mlx5_esw_offloads_set_ns_peer(esw, peer_esw, true);
if (err)
goto err_out;
err = mlx5_esw_offloads_pair(esw, peer_esw);
if (err)
goto err_peer;
err = mlx5_esw_offloads_pair(peer_esw, esw);
if (err)
goto err_pair;
mlx5_devcom_set_paired(devcom, MLX5_DEVCOM_ESW_OFFLOADS, true);
break;
case ESW_OFFLOADS_DEVCOM_UNPAIR:
if (!mlx5_devcom_is_paired(devcom, MLX5_DEVCOM_ESW_OFFLOADS))
break;
mlx5_devcom_set_paired(devcom, MLX5_DEVCOM_ESW_OFFLOADS, false);
mlx5_esw_offloads_unpair(peer_esw);
mlx5_esw_offloads_unpair(esw);
mlx5_esw_offloads_set_ns_peer(esw, peer_esw, false);
break;
}
return 0;
err_pair:
mlx5_esw_offloads_unpair(esw);
err_peer:
mlx5_esw_offloads_set_ns_peer(esw, peer_esw, false);
err_out:
mlx5_core_err(esw->dev, "esw offloads devcom event failure, event %u err %d",
event, err);
return err;
}
static void esw_offloads_devcom_init(struct mlx5_eswitch *esw)
{
struct mlx5_devcom *devcom = esw->dev->priv.devcom;
INIT_LIST_HEAD(&esw->offloads.peer_flows);
mutex_init(&esw->offloads.peer_mutex);
if (!MLX5_CAP_ESW(esw->dev, merged_eswitch))
return;
mlx5_devcom_register_component(devcom,
MLX5_DEVCOM_ESW_OFFLOADS,
mlx5_esw_offloads_devcom_event,
esw);
mlx5_devcom_send_event(devcom,
MLX5_DEVCOM_ESW_OFFLOADS,
ESW_OFFLOADS_DEVCOM_PAIR, esw);
}
static void esw_offloads_devcom_cleanup(struct mlx5_eswitch *esw)
{
struct mlx5_devcom *devcom = esw->dev->priv.devcom;
if (!MLX5_CAP_ESW(esw->dev, merged_eswitch))
return;
mlx5_devcom_send_event(devcom, MLX5_DEVCOM_ESW_OFFLOADS,
ESW_OFFLOADS_DEVCOM_UNPAIR, esw);
mlx5_devcom_unregister_component(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
}
bool mlx5_esw_vport_match_metadata_supported(const struct mlx5_eswitch *esw)
{
if (!MLX5_CAP_ESW(esw->dev, esw_uplink_ingress_acl))
return false;
if (!(MLX5_CAP_ESW_FLOWTABLE(esw->dev, fdb_to_vport_reg_c_id) &
MLX5_FDB_TO_VPORT_REG_C_0))
return false;
if (!MLX5_CAP_ESW_FLOWTABLE(esw->dev, flow_source))
return false;
if (mlx5_core_is_ecpf_esw_manager(esw->dev) ||
mlx5_ecpf_vport_exists(esw->dev))
return false;
return true;
}
u32 mlx5_esw_match_metadata_alloc(struct mlx5_eswitch *esw)
{
u32 vport_end_ida = (1 << ESW_VPORT_BITS) - 1;
/* Reserve 0xf for internal port offload */
u32 max_pf_num = (1 << ESW_PFNUM_BITS) - 2;
u32 pf_num;
int id;
/* Only 4 bits of pf_num */
pf_num = mlx5_get_dev_index(esw->dev);
if (pf_num > max_pf_num)
return 0;
/* Metadata is 4 bits of PFNUM and 12 bits of unique id */
/* Use only non-zero vport_id (1-4095) for all PF's */
id = ida_alloc_range(&esw->offloads.vport_metadata_ida, 1, vport_end_ida, GFP_KERNEL);
if (id < 0)
return 0;
id = (pf_num << ESW_VPORT_BITS) | id;
return id;
}
void mlx5_esw_match_metadata_free(struct mlx5_eswitch *esw, u32 metadata)
{
u32 vport_bit_mask = (1 << ESW_VPORT_BITS) - 1;
/* Metadata contains only 12 bits of actual ida id */
ida_free(&esw->offloads.vport_metadata_ida, metadata & vport_bit_mask);
}
static int esw_offloads_vport_metadata_setup(struct mlx5_eswitch *esw,
struct mlx5_vport *vport)
{
vport->default_metadata = mlx5_esw_match_metadata_alloc(esw);
vport->metadata = vport->default_metadata;
return vport->metadata ? 0 : -ENOSPC;
}
static void esw_offloads_vport_metadata_cleanup(struct mlx5_eswitch *esw,
struct mlx5_vport *vport)
{
if (!vport->default_metadata)
return;
WARN_ON(vport->metadata != vport->default_metadata);
mlx5_esw_match_metadata_free(esw, vport->default_metadata);
}
static void esw_offloads_metadata_uninit(struct mlx5_eswitch *esw)
{
struct mlx5_vport *vport;
unsigned long i;
if (!mlx5_eswitch_vport_match_metadata_enabled(esw))
return;
mlx5_esw_for_each_vport(esw, i, vport)
esw_offloads_vport_metadata_cleanup(esw, vport);
}
static int esw_offloads_metadata_init(struct mlx5_eswitch *esw)
{
struct mlx5_vport *vport;
unsigned long i;
int err;
if (!mlx5_eswitch_vport_match_metadata_enabled(esw))
return 0;
mlx5_esw_for_each_vport(esw, i, vport) {
err = esw_offloads_vport_metadata_setup(esw, vport);
if (err)
goto metadata_err;
}
return 0;
metadata_err:
esw_offloads_metadata_uninit(esw);
return err;
}
int mlx5_esw_offloads_vport_metadata_set(struct mlx5_eswitch *esw, bool enable)
{
int err = 0;
down_write(&esw->mode_lock);
if (esw->mode != MLX5_ESWITCH_NONE) {
err = -EBUSY;
goto done;
}
if (!mlx5_esw_vport_match_metadata_supported(esw)) {
err = -EOPNOTSUPP;
goto done;
}
if (enable)
esw->flags |= MLX5_ESWITCH_VPORT_MATCH_METADATA;
else
esw->flags &= ~MLX5_ESWITCH_VPORT_MATCH_METADATA;
done:
up_write(&esw->mode_lock);
return err;
}
int
esw_vport_create_offloads_acl_tables(struct mlx5_eswitch *esw,
struct mlx5_vport *vport)
{
int err;
err = esw_acl_ingress_ofld_setup(esw, vport);
if (err)
return err;
err = esw_acl_egress_ofld_setup(esw, vport);
if (err)
goto egress_err;
return 0;
egress_err:
esw_acl_ingress_ofld_cleanup(esw, vport);
return err;
}
void
esw_vport_destroy_offloads_acl_tables(struct mlx5_eswitch *esw,
struct mlx5_vport *vport)
{
esw_acl_egress_ofld_cleanup(vport);
esw_acl_ingress_ofld_cleanup(esw, vport);
}
static int esw_create_uplink_offloads_acl_tables(struct mlx5_eswitch *esw)
{
struct mlx5_vport *vport;
vport = mlx5_eswitch_get_vport(esw, MLX5_VPORT_UPLINK);
if (IS_ERR(vport))
return PTR_ERR(vport);
return esw_vport_create_offloads_acl_tables(esw, vport);
}
static void esw_destroy_uplink_offloads_acl_tables(struct mlx5_eswitch *esw)
{
struct mlx5_vport *vport;
vport = mlx5_eswitch_get_vport(esw, MLX5_VPORT_UPLINK);
if (IS_ERR(vport))
return;
esw_vport_destroy_offloads_acl_tables(esw, vport);
}
int mlx5_eswitch_reload_reps(struct mlx5_eswitch *esw)
{
struct mlx5_eswitch_rep *rep;
unsigned long i;
int ret;
if (!esw || esw->mode != MLX5_ESWITCH_OFFLOADS)
return 0;
rep = mlx5_eswitch_get_rep(esw, MLX5_VPORT_UPLINK);
if (atomic_read(&rep->rep_data[REP_ETH].state) != REP_LOADED)
return 0;
ret = mlx5_esw_offloads_rep_load(esw, MLX5_VPORT_UPLINK);
if (ret)
return ret;
mlx5_esw_for_each_rep(esw, i, rep) {
if (atomic_read(&rep->rep_data[REP_ETH].state) == REP_LOADED)
mlx5_esw_offloads_rep_load(esw, rep->vport);
}
return 0;
}
static int esw_offloads_steering_init(struct mlx5_eswitch *esw)
{
struct mlx5_esw_indir_table *indir;
int err;
memset(&esw->fdb_table.offloads, 0, sizeof(struct offloads_fdb));
mutex_init(&esw->fdb_table.offloads.vports.lock);
hash_init(esw->fdb_table.offloads.vports.table);
atomic64_set(&esw->user_count, 0);
indir = mlx5_esw_indir_table_init();
if (IS_ERR(indir)) {
err = PTR_ERR(indir);
goto create_indir_err;
}
esw->fdb_table.offloads.indir = indir;
err = esw_create_uplink_offloads_acl_tables(esw);
if (err)
goto create_acl_err;
err = esw_create_offloads_table(esw);
if (err)
goto create_offloads_err;
err = esw_create_restore_table(esw);
if (err)
goto create_restore_err;
err = esw_create_offloads_fdb_tables(esw);
if (err)
goto create_fdb_err;
err = esw_create_vport_rx_group(esw);
if (err)
goto create_fg_err;
return 0;
create_fg_err:
esw_destroy_offloads_fdb_tables(esw);
create_fdb_err:
esw_destroy_restore_table(esw);
create_restore_err:
esw_destroy_offloads_table(esw);
create_offloads_err:
esw_destroy_uplink_offloads_acl_tables(esw);
create_acl_err:
mlx5_esw_indir_table_destroy(esw->fdb_table.offloads.indir);
create_indir_err:
mutex_destroy(&esw->fdb_table.offloads.vports.lock);
return err;
}
static void esw_offloads_steering_cleanup(struct mlx5_eswitch *esw)
{
esw_destroy_vport_rx_group(esw);
esw_destroy_offloads_fdb_tables(esw);
esw_destroy_restore_table(esw);
esw_destroy_offloads_table(esw);
esw_destroy_uplink_offloads_acl_tables(esw);
mlx5_esw_indir_table_destroy(esw->fdb_table.offloads.indir);
mutex_destroy(&esw->fdb_table.offloads.vports.lock);
}
static void
esw_vfs_changed_event_handler(struct mlx5_eswitch *esw, const u32 *out)
{
bool host_pf_disabled;
u16 new_num_vfs;
new_num_vfs = MLX5_GET(query_esw_functions_out, out,
host_params_context.host_num_of_vfs);
host_pf_disabled = MLX5_GET(query_esw_functions_out, out,
host_params_context.host_pf_disabled);
if (new_num_vfs == esw->esw_funcs.num_vfs || host_pf_disabled)
return;
/* Number of VFs can only change from "0 to x" or "x to 0". */
if (esw->esw_funcs.num_vfs > 0) {
mlx5_eswitch_unload_vf_vports(esw, esw->esw_funcs.num_vfs);
} else {
int err;
err = mlx5_eswitch_load_vf_vports(esw, new_num_vfs,
MLX5_VPORT_UC_ADDR_CHANGE);
if (err)
return;
}
esw->esw_funcs.num_vfs = new_num_vfs;
}
static void esw_functions_changed_event_handler(struct work_struct *work)
{
struct mlx5_host_work *host_work;
struct mlx5_eswitch *esw;
const u32 *out;
host_work = container_of(work, struct mlx5_host_work, work);
esw = host_work->esw;
out = mlx5_esw_query_functions(esw->dev);
if (IS_ERR(out))
goto out;
esw_vfs_changed_event_handler(esw, out);
kvfree(out);
out:
kfree(host_work);
}
int mlx5_esw_funcs_changed_handler(struct notifier_block *nb, unsigned long type, void *data)
{
struct mlx5_esw_functions *esw_funcs;
struct mlx5_host_work *host_work;
struct mlx5_eswitch *esw;
host_work = kzalloc(sizeof(*host_work), GFP_ATOMIC);
if (!host_work)
return NOTIFY_DONE;
esw_funcs = mlx5_nb_cof(nb, struct mlx5_esw_functions, nb);
esw = container_of(esw_funcs, struct mlx5_eswitch, esw_funcs);
host_work->esw = esw;
INIT_WORK(&host_work->work, esw_functions_changed_event_handler);
queue_work(esw->work_queue, &host_work->work);
return NOTIFY_OK;
}
static int mlx5_esw_host_number_init(struct mlx5_eswitch *esw)
{
const u32 *query_host_out;
if (!mlx5_core_is_ecpf_esw_manager(esw->dev))
return 0;
query_host_out = mlx5_esw_query_functions(esw->dev);
if (IS_ERR(query_host_out))
return PTR_ERR(query_host_out);
/* Mark non local controller with non zero controller number. */
esw->offloads.host_number = MLX5_GET(query_esw_functions_out, query_host_out,
host_params_context.host_number);
kvfree(query_host_out);
return 0;
}
bool mlx5_esw_offloads_controller_valid(const struct mlx5_eswitch *esw, u32 controller)
{
/* Local controller is always valid */
if (controller == 0)
return true;
if (!mlx5_core_is_ecpf_esw_manager(esw->dev))
return false;
/* External host number starts with zero in device */
return (controller == esw->offloads.host_number + 1);
}
int esw_offloads_enable(struct mlx5_eswitch *esw)
{
struct mapping_ctx *reg_c0_obj_pool;
struct mlx5_vport *vport;
unsigned long i;
u64 mapping_id;
int err;
mutex_init(&esw->offloads.termtbl_mutex);
mlx5_rdma_enable_roce(esw->dev);
err = mlx5_esw_host_number_init(esw);
if (err)
goto err_metadata;
err = esw_offloads_metadata_init(esw);
if (err)
goto err_metadata;
err = esw_set_passing_vport_metadata(esw, true);
if (err)
goto err_vport_metadata;
mapping_id = mlx5_query_nic_system_image_guid(esw->dev);
reg_c0_obj_pool = mapping_create_for_id(mapping_id, MAPPING_TYPE_CHAIN,
sizeof(struct mlx5_mapped_obj),
ESW_REG_C0_USER_DATA_METADATA_MASK,
true);
if (IS_ERR(reg_c0_obj_pool)) {
err = PTR_ERR(reg_c0_obj_pool);
goto err_pool;
}
esw->offloads.reg_c0_obj_pool = reg_c0_obj_pool;
err = esw_offloads_steering_init(esw);
if (err)
goto err_steering_init;
/* Representor will control the vport link state */
mlx5_esw_for_each_vf_vport(esw, i, vport, esw->esw_funcs.num_vfs)
vport->info.link_state = MLX5_VPORT_ADMIN_STATE_DOWN;
/* Uplink vport rep must load first. */
err = esw_offloads_load_rep(esw, MLX5_VPORT_UPLINK);
if (err)
goto err_uplink;
err = mlx5_eswitch_enable_pf_vf_vports(esw, MLX5_VPORT_UC_ADDR_CHANGE);
if (err)
goto err_vports;
esw_offloads_devcom_init(esw);
return 0;
err_vports:
esw_offloads_unload_rep(esw, MLX5_VPORT_UPLINK);
err_uplink:
esw_offloads_steering_cleanup(esw);
err_steering_init:
mapping_destroy(reg_c0_obj_pool);
err_pool:
esw_set_passing_vport_metadata(esw, false);
err_vport_metadata:
esw_offloads_metadata_uninit(esw);
err_metadata:
mlx5_rdma_disable_roce(esw->dev);
mutex_destroy(&esw->offloads.termtbl_mutex);
return err;
}
static int esw_offloads_stop(struct mlx5_eswitch *esw,
struct netlink_ext_ack *extack)
{
int err, err1;
mlx5_eswitch_disable_locked(esw, false);
err = mlx5_eswitch_enable_locked(esw, MLX5_ESWITCH_LEGACY,
MLX5_ESWITCH_IGNORE_NUM_VFS);
if (err) {
NL_SET_ERR_MSG_MOD(extack, "Failed setting eswitch to legacy");
err1 = mlx5_eswitch_enable_locked(esw, MLX5_ESWITCH_OFFLOADS,
MLX5_ESWITCH_IGNORE_NUM_VFS);
if (err1) {
NL_SET_ERR_MSG_MOD(extack,
"Failed setting eswitch back to offloads");
}
}
return err;
}
void esw_offloads_disable(struct mlx5_eswitch *esw)
{
esw_offloads_devcom_cleanup(esw);
mlx5_eswitch_disable_pf_vf_vports(esw);
esw_offloads_unload_rep(esw, MLX5_VPORT_UPLINK);
esw_set_passing_vport_metadata(esw, false);
esw_offloads_steering_cleanup(esw);
mapping_destroy(esw->offloads.reg_c0_obj_pool);
esw_offloads_metadata_uninit(esw);
mlx5_rdma_disable_roce(esw->dev);
mutex_destroy(&esw->offloads.termtbl_mutex);
}
static int esw_mode_from_devlink(u16 mode, u16 *mlx5_mode)
{
switch (mode) {
case DEVLINK_ESWITCH_MODE_LEGACY:
*mlx5_mode = MLX5_ESWITCH_LEGACY;
break;
case DEVLINK_ESWITCH_MODE_SWITCHDEV:
*mlx5_mode = MLX5_ESWITCH_OFFLOADS;
break;
default:
return -EINVAL;
}
return 0;
}
static int esw_mode_to_devlink(u16 mlx5_mode, u16 *mode)
{
switch (mlx5_mode) {
case MLX5_ESWITCH_LEGACY:
*mode = DEVLINK_ESWITCH_MODE_LEGACY;
break;
case MLX5_ESWITCH_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;
}
static int eswitch_devlink_esw_mode_check(const struct mlx5_eswitch *esw)
{
/* devlink commands in NONE eswitch mode are currently supported only
* on ECPF.
*/
return (esw->mode == MLX5_ESWITCH_NONE &&
!mlx5_core_is_ecpf_esw_manager(esw->dev)) ? -EOPNOTSUPP : 0;
}
int mlx5_devlink_eswitch_mode_set(struct devlink *devlink, u16 mode,
struct netlink_ext_ack *extack)
{
u16 cur_mlx5_mode, mlx5_mode = 0;
struct mlx5_eswitch *esw;
int err = 0;
esw = mlx5_devlink_eswitch_get(devlink);
if (IS_ERR(esw))
return PTR_ERR(esw);
if (esw_mode_from_devlink(mode, &mlx5_mode))
return -EINVAL;
mlx5_lag_disable_change(esw->dev);
err = mlx5_esw_try_lock(esw);
if (err < 0) {
NL_SET_ERR_MSG_MOD(extack, "Can't change mode, E-Switch is busy");
goto enable_lag;
}
cur_mlx5_mode = err;
err = 0;
if (cur_mlx5_mode == mlx5_mode)
goto unlock;
if (mode == DEVLINK_ESWITCH_MODE_SWITCHDEV) {
if (mlx5_devlink_trap_get_num_active(esw->dev)) {
NL_SET_ERR_MSG_MOD(extack,
"Can't change mode while devlink traps are active");
err = -EOPNOTSUPP;
goto unlock;
}
err = esw_offloads_start(esw, extack);
} else if (mode == DEVLINK_ESWITCH_MODE_LEGACY) {
err = esw_offloads_stop(esw, extack);
} else {
err = -EINVAL;
}
unlock:
mlx5_esw_unlock(esw);
enable_lag:
mlx5_lag_enable_change(esw->dev);
return err;
}
int mlx5_devlink_eswitch_mode_get(struct devlink *devlink, u16 *mode)
{
struct mlx5_eswitch *esw;
int err;
esw = mlx5_devlink_eswitch_get(devlink);
if (IS_ERR(esw))
return PTR_ERR(esw);
down_write(&esw->mode_lock);
err = eswitch_devlink_esw_mode_check(esw);
if (err)
goto unlock;
err = esw_mode_to_devlink(esw->mode, mode);
unlock:
up_write(&esw->mode_lock);
return err;
}
static int mlx5_esw_vports_inline_set(struct mlx5_eswitch *esw, u8 mlx5_mode,
struct netlink_ext_ack *extack)
{
struct mlx5_core_dev *dev = esw->dev;
struct mlx5_vport *vport;
u16 err_vport_num = 0;
unsigned long i;
int err = 0;
mlx5_esw_for_each_host_func_vport(esw, i, vport, esw->esw_funcs.num_vfs) {
err = mlx5_modify_nic_vport_min_inline(dev, vport->vport, mlx5_mode);
if (err) {
err_vport_num = vport->vport;
NL_SET_ERR_MSG_MOD(extack,
"Failed to set min inline on vport");
goto revert_inline_mode;
}
}
return 0;
revert_inline_mode:
mlx5_esw_for_each_host_func_vport(esw, i, vport, esw->esw_funcs.num_vfs) {
if (vport->vport == err_vport_num)
break;
mlx5_modify_nic_vport_min_inline(dev,
vport->vport,
esw->offloads.inline_mode);
}
return err;
}
int mlx5_devlink_eswitch_inline_mode_set(struct devlink *devlink, u8 mode,
struct netlink_ext_ack *extack)
{
struct mlx5_core_dev *dev = devlink_priv(devlink);
struct mlx5_eswitch *esw;
u8 mlx5_mode;
int err;
esw = mlx5_devlink_eswitch_get(devlink);
if (IS_ERR(esw))
return PTR_ERR(esw);
down_write(&esw->mode_lock);
err = eswitch_devlink_esw_mode_check(esw);
if (err)
goto out;
switch (MLX5_CAP_ETH(dev, wqe_inline_mode)) {
case MLX5_CAP_INLINE_MODE_NOT_REQUIRED:
if (mode == DEVLINK_ESWITCH_INLINE_MODE_NONE) {
err = 0;
goto out;
}
fallthrough;
case MLX5_CAP_INLINE_MODE_L2:
NL_SET_ERR_MSG_MOD(extack, "Inline mode can't be set");
err = -EOPNOTSUPP;
goto out;
case MLX5_CAP_INLINE_MODE_VPORT_CONTEXT:
break;
}
if (atomic64_read(&esw->offloads.num_flows) > 0) {
NL_SET_ERR_MSG_MOD(extack,
"Can't set inline mode when flows are configured");
err = -EOPNOTSUPP;
goto out;
}
err = esw_inline_mode_from_devlink(mode, &mlx5_mode);
if (err)
goto out;
err = mlx5_esw_vports_inline_set(esw, mlx5_mode, extack);
if (err)
goto out;
esw->offloads.inline_mode = mlx5_mode;
up_write(&esw->mode_lock);
return 0;
out:
up_write(&esw->mode_lock);
return err;
}
int mlx5_devlink_eswitch_inline_mode_get(struct devlink *devlink, u8 *mode)
{
struct mlx5_eswitch *esw;
int err;
esw = mlx5_devlink_eswitch_get(devlink);
if (IS_ERR(esw))
return PTR_ERR(esw);
down_write(&esw->mode_lock);
err = eswitch_devlink_esw_mode_check(esw);
if (err)
goto unlock;
err = esw_inline_mode_to_devlink(esw->offloads.inline_mode, mode);
unlock:
up_write(&esw->mode_lock);
return err;
}
int mlx5_devlink_eswitch_encap_mode_set(struct devlink *devlink,
enum devlink_eswitch_encap_mode encap,
struct netlink_ext_ack *extack)
{
struct mlx5_core_dev *dev = devlink_priv(devlink);
struct mlx5_eswitch *esw;
int err;
esw = mlx5_devlink_eswitch_get(devlink);
if (IS_ERR(esw))
return PTR_ERR(esw);
down_write(&esw->mode_lock);
err = eswitch_devlink_esw_mode_check(esw);
if (err)
goto unlock;
if (encap != DEVLINK_ESWITCH_ENCAP_MODE_NONE &&
(!MLX5_CAP_ESW_FLOWTABLE_FDB(dev, reformat) ||
!MLX5_CAP_ESW_FLOWTABLE_FDB(dev, decap))) {
err = -EOPNOTSUPP;
goto unlock;
}
if (encap && encap != DEVLINK_ESWITCH_ENCAP_MODE_BASIC) {
err = -EOPNOTSUPP;
goto unlock;
}
if (esw->mode == MLX5_ESWITCH_LEGACY) {
esw->offloads.encap = encap;
goto unlock;
}
if (esw->offloads.encap == encap)
goto unlock;
if (atomic64_read(&esw->offloads.num_flows) > 0) {
NL_SET_ERR_MSG_MOD(extack,
"Can't set encapsulation when flows are configured");
err = -EOPNOTSUPP;
goto unlock;
}
esw_destroy_offloads_fdb_tables(esw);
esw->offloads.encap = encap;
err = esw_create_offloads_fdb_tables(esw);
if (err) {
NL_SET_ERR_MSG_MOD(extack,
"Failed re-creating fast FDB table");
esw->offloads.encap = !encap;
(void)esw_create_offloads_fdb_tables(esw);
}
unlock:
up_write(&esw->mode_lock);
return err;
}
int mlx5_devlink_eswitch_encap_mode_get(struct devlink *devlink,
enum devlink_eswitch_encap_mode *encap)
{
struct mlx5_eswitch *esw;
int err;
esw = mlx5_devlink_eswitch_get(devlink);
if (IS_ERR(esw))
return PTR_ERR(esw);
down_write(&esw->mode_lock);
err = eswitch_devlink_esw_mode_check(esw);
if (err)
goto unlock;
*encap = esw->offloads.encap;
unlock:
up_write(&esw->mode_lock);
return err;
}
static bool
mlx5_eswitch_vport_has_rep(const struct mlx5_eswitch *esw, u16 vport_num)
{
/* Currently, only ECPF based device has representor for host PF. */
if (vport_num == MLX5_VPORT_PF &&
!mlx5_core_is_ecpf_esw_manager(esw->dev))
return false;
if (vport_num == MLX5_VPORT_ECPF &&
!mlx5_ecpf_vport_exists(esw->dev))
return false;
return true;
}
void mlx5_eswitch_register_vport_reps(struct mlx5_eswitch *esw,
const struct mlx5_eswitch_rep_ops *ops,
u8 rep_type)
{
struct mlx5_eswitch_rep_data *rep_data;
struct mlx5_eswitch_rep *rep;
unsigned long i;
esw->offloads.rep_ops[rep_type] = ops;
mlx5_esw_for_each_rep(esw, i, rep) {
if (likely(mlx5_eswitch_vport_has_rep(esw, rep->vport))) {
rep->esw = esw;
rep_data = &rep->rep_data[rep_type];
atomic_set(&rep_data->state, REP_REGISTERED);
}
}
}
EXPORT_SYMBOL(mlx5_eswitch_register_vport_reps);
void mlx5_eswitch_unregister_vport_reps(struct mlx5_eswitch *esw, u8 rep_type)
{
struct mlx5_eswitch_rep *rep;
unsigned long i;
if (esw->mode == MLX5_ESWITCH_OFFLOADS)
__unload_reps_all_vport(esw, rep_type);
mlx5_esw_for_each_rep(esw, i, rep)
atomic_set(&rep->rep_data[rep_type].state, REP_UNREGISTERED);
}
EXPORT_SYMBOL(mlx5_eswitch_unregister_vport_reps);
void *mlx5_eswitch_get_uplink_priv(struct mlx5_eswitch *esw, u8 rep_type)
{
struct mlx5_eswitch_rep *rep;
rep = mlx5_eswitch_get_rep(esw, MLX5_VPORT_UPLINK);
return rep->rep_data[rep_type].priv;
}
void *mlx5_eswitch_get_proto_dev(struct mlx5_eswitch *esw,
u16 vport,
u8 rep_type)
{
struct mlx5_eswitch_rep *rep;
rep = mlx5_eswitch_get_rep(esw, vport);
if (atomic_read(&rep->rep_data[rep_type].state) == REP_LOADED &&
esw->offloads.rep_ops[rep_type]->get_proto_dev)
return esw->offloads.rep_ops[rep_type]->get_proto_dev(rep);
return NULL;
}
EXPORT_SYMBOL(mlx5_eswitch_get_proto_dev);
void *mlx5_eswitch_uplink_get_proto_dev(struct mlx5_eswitch *esw, u8 rep_type)
{
return mlx5_eswitch_get_proto_dev(esw, MLX5_VPORT_UPLINK, rep_type);
}
EXPORT_SYMBOL(mlx5_eswitch_uplink_get_proto_dev);
struct mlx5_eswitch_rep *mlx5_eswitch_vport_rep(struct mlx5_eswitch *esw,
u16 vport)
{
return mlx5_eswitch_get_rep(esw, vport);
}
EXPORT_SYMBOL(mlx5_eswitch_vport_rep);
bool mlx5_eswitch_reg_c1_loopback_enabled(const struct mlx5_eswitch *esw)
{
return !!(esw->flags & MLX5_ESWITCH_REG_C1_LOOPBACK_ENABLED);
}
EXPORT_SYMBOL(mlx5_eswitch_reg_c1_loopback_enabled);
bool mlx5_eswitch_vport_match_metadata_enabled(const struct mlx5_eswitch *esw)
{
return !!(esw->flags & MLX5_ESWITCH_VPORT_MATCH_METADATA);
}
EXPORT_SYMBOL(mlx5_eswitch_vport_match_metadata_enabled);
u32 mlx5_eswitch_get_vport_metadata_for_match(struct mlx5_eswitch *esw,
u16 vport_num)
{
struct mlx5_vport *vport = mlx5_eswitch_get_vport(esw, vport_num);
if (WARN_ON_ONCE(IS_ERR(vport)))
return 0;
return vport->metadata << (32 - ESW_SOURCE_PORT_METADATA_BITS);
}
EXPORT_SYMBOL(mlx5_eswitch_get_vport_metadata_for_match);
int mlx5_esw_offloads_sf_vport_enable(struct mlx5_eswitch *esw, struct devlink_port *dl_port,
u16 vport_num, u32 controller, u32 sfnum)
{
int err;
err = mlx5_esw_vport_enable(esw, vport_num, MLX5_VPORT_UC_ADDR_CHANGE);
if (err)
return err;
err = mlx5_esw_devlink_sf_port_register(esw, dl_port, vport_num, controller, sfnum);
if (err)
goto devlink_err;
err = mlx5_esw_offloads_rep_load(esw, vport_num);
if (err)
goto rep_err;
return 0;
rep_err:
mlx5_esw_devlink_sf_port_unregister(esw, vport_num);
devlink_err:
mlx5_esw_vport_disable(esw, vport_num);
return err;
}
void mlx5_esw_offloads_sf_vport_disable(struct mlx5_eswitch *esw, u16 vport_num)
{
mlx5_esw_offloads_rep_unload(esw, vport_num);
mlx5_esw_devlink_sf_port_unregister(esw, vport_num);
mlx5_esw_vport_disable(esw, vport_num);
}
static int mlx5_esw_query_vport_vhca_id(struct mlx5_eswitch *esw, u16 vport_num, u16 *vhca_id)
{
int query_out_sz = MLX5_ST_SZ_BYTES(query_hca_cap_out);
void *query_ctx;
void *hca_caps;
int err;
*vhca_id = 0;
if (mlx5_esw_is_manager_vport(esw, vport_num) ||
!MLX5_CAP_GEN(esw->dev, vhca_resource_manager))
return -EPERM;
query_ctx = kzalloc(query_out_sz, GFP_KERNEL);
if (!query_ctx)
return -ENOMEM;
err = mlx5_vport_get_other_func_cap(esw->dev, vport_num, query_ctx);
if (err)
goto out_free;
hca_caps = MLX5_ADDR_OF(query_hca_cap_out, query_ctx, capability);
*vhca_id = MLX5_GET(cmd_hca_cap, hca_caps, vhca_id);
out_free:
kfree(query_ctx);
return err;
}
int mlx5_esw_vport_vhca_id_set(struct mlx5_eswitch *esw, u16 vport_num)
{
u16 *old_entry, *vhca_map_entry, vhca_id;
int err;
err = mlx5_esw_query_vport_vhca_id(esw, vport_num, &vhca_id);
if (err) {
esw_warn(esw->dev, "Getting vhca_id for vport failed (vport=%u,err=%d)\n",
vport_num, err);
return err;
}
vhca_map_entry = kmalloc(sizeof(*vhca_map_entry), GFP_KERNEL);
if (!vhca_map_entry)
return -ENOMEM;
*vhca_map_entry = vport_num;
old_entry = xa_store(&esw->offloads.vhca_map, vhca_id, vhca_map_entry, GFP_KERNEL);
if (xa_is_err(old_entry)) {
kfree(vhca_map_entry);
return xa_err(old_entry);
}
kfree(old_entry);
return 0;
}
void mlx5_esw_vport_vhca_id_clear(struct mlx5_eswitch *esw, u16 vport_num)
{
u16 *vhca_map_entry, vhca_id;
int err;
err = mlx5_esw_query_vport_vhca_id(esw, vport_num, &vhca_id);
if (err)
esw_warn(esw->dev, "Getting vhca_id for vport failed (vport=%hu,err=%d)\n",
vport_num, err);
vhca_map_entry = xa_erase(&esw->offloads.vhca_map, vhca_id);
kfree(vhca_map_entry);
}
int mlx5_eswitch_vhca_id_to_vport(struct mlx5_eswitch *esw, u16 vhca_id, u16 *vport_num)
{
u16 *res = xa_load(&esw->offloads.vhca_map, vhca_id);
if (!res)
return -ENOENT;
*vport_num = *res;
return 0;
}
u32 mlx5_eswitch_get_vport_metadata_for_set(struct mlx5_eswitch *esw,
u16 vport_num)
{
struct mlx5_vport *vport = mlx5_eswitch_get_vport(esw, vport_num);
if (WARN_ON_ONCE(IS_ERR(vport)))
return 0;
return vport->metadata;
}
EXPORT_SYMBOL(mlx5_eswitch_get_vport_metadata_for_set);