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|
// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
/* Copyright (c) 2021, Mellanox Technologies inc. All rights reserved. */
#include "rx_res.h"
#include "channels.h"
#include "params.h"
#define MLX5E_MAX_NUM_RSS 16
struct mlx5e_rx_res {
struct mlx5_core_dev *mdev;
enum mlx5e_rx_res_features features;
unsigned int max_nch;
u32 drop_rqn;
struct mlx5e_rss *rss[MLX5E_MAX_NUM_RSS];
bool rss_active;
u32 rss_rqns[MLX5E_INDIR_RQT_SIZE];
unsigned int rss_nch;
struct {
struct mlx5e_rqt direct_rqt;
struct mlx5e_tir direct_tir;
struct mlx5e_rqt xsk_rqt;
struct mlx5e_tir xsk_tir;
} *channels;
struct {
struct mlx5e_rqt rqt;
struct mlx5e_tir tir;
} ptp;
};
/* API for rx_res_rss_* */
static int mlx5e_rx_res_rss_init_def(struct mlx5e_rx_res *res,
const struct mlx5e_lro_param *init_lro_param,
unsigned int init_nch)
{
bool inner_ft_support = res->features & MLX5E_RX_RES_FEATURE_INNER_FT;
struct mlx5e_rss *rss;
int err;
if (WARN_ON(res->rss[0]))
return -EINVAL;
rss = mlx5e_rss_alloc();
if (!rss)
return -ENOMEM;
err = mlx5e_rss_init(rss, res->mdev, inner_ft_support, res->drop_rqn,
init_lro_param);
if (err)
goto err_rss_free;
mlx5e_rss_set_indir_uniform(rss, init_nch);
res->rss[0] = rss;
return 0;
err_rss_free:
mlx5e_rss_free(rss);
return err;
}
int mlx5e_rx_res_rss_init(struct mlx5e_rx_res *res, u32 *rss_idx, unsigned int init_nch)
{
bool inner_ft_support = res->features & MLX5E_RX_RES_FEATURE_INNER_FT;
struct mlx5e_rss *rss;
int err, i;
for (i = 1; i < MLX5E_MAX_NUM_RSS; i++)
if (!res->rss[i])
break;
if (i == MLX5E_MAX_NUM_RSS)
return -ENOSPC;
rss = mlx5e_rss_alloc();
if (!rss)
return -ENOMEM;
err = mlx5e_rss_init_no_tirs(rss, res->mdev, inner_ft_support, res->drop_rqn);
if (err)
goto err_rss_free;
mlx5e_rss_set_indir_uniform(rss, init_nch);
if (res->rss_active)
mlx5e_rss_enable(rss, res->rss_rqns, res->rss_nch);
res->rss[i] = rss;
*rss_idx = i;
return 0;
err_rss_free:
mlx5e_rss_free(rss);
return err;
}
static int __mlx5e_rx_res_rss_destroy(struct mlx5e_rx_res *res, u32 rss_idx)
{
struct mlx5e_rss *rss = res->rss[rss_idx];
int err;
err = mlx5e_rss_cleanup(rss);
if (err)
return err;
mlx5e_rss_free(rss);
res->rss[rss_idx] = NULL;
return 0;
}
int mlx5e_rx_res_rss_destroy(struct mlx5e_rx_res *res, u32 rss_idx)
{
struct mlx5e_rss *rss;
if (rss_idx >= MLX5E_MAX_NUM_RSS)
return -EINVAL;
rss = res->rss[rss_idx];
if (!rss)
return -EINVAL;
return __mlx5e_rx_res_rss_destroy(res, rss_idx);
}
static void mlx5e_rx_res_rss_destroy_all(struct mlx5e_rx_res *res)
{
int i;
for (i = 0; i < MLX5E_MAX_NUM_RSS; i++) {
struct mlx5e_rss *rss = res->rss[i];
int err;
if (!rss)
continue;
err = __mlx5e_rx_res_rss_destroy(res, i);
if (err) {
unsigned int refcount;
refcount = mlx5e_rss_refcnt_read(rss);
mlx5_core_warn(res->mdev,
"Failed to destroy RSS context %d, refcount = %u, err = %d\n",
i, refcount, err);
}
}
}
static void mlx5e_rx_res_rss_enable(struct mlx5e_rx_res *res)
{
int i;
res->rss_active = true;
for (i = 0; i < MLX5E_MAX_NUM_RSS; i++) {
struct mlx5e_rss *rss = res->rss[i];
if (!rss)
continue;
mlx5e_rss_enable(rss, res->rss_rqns, res->rss_nch);
}
}
static void mlx5e_rx_res_rss_disable(struct mlx5e_rx_res *res)
{
int i;
res->rss_active = false;
for (i = 0; i < MLX5E_MAX_NUM_RSS; i++) {
struct mlx5e_rss *rss = res->rss[i];
if (!rss)
continue;
mlx5e_rss_disable(rss);
}
}
/* Updates the indirection table SW shadow, does not update the HW resources yet */
void mlx5e_rx_res_rss_set_indir_uniform(struct mlx5e_rx_res *res, unsigned int nch)
{
WARN_ON_ONCE(res->rss_active);
mlx5e_rss_set_indir_uniform(res->rss[0], nch);
}
int mlx5e_rx_res_rss_get_rxfh(struct mlx5e_rx_res *res, u32 rss_idx,
u32 *indir, u8 *key, u8 *hfunc)
{
struct mlx5e_rss *rss;
if (rss_idx >= MLX5E_MAX_NUM_RSS)
return -EINVAL;
rss = res->rss[rss_idx];
if (!rss)
return -ENOENT;
return mlx5e_rss_get_rxfh(rss, indir, key, hfunc);
}
int mlx5e_rx_res_rss_set_rxfh(struct mlx5e_rx_res *res, u32 rss_idx,
const u32 *indir, const u8 *key, const u8 *hfunc)
{
struct mlx5e_rss *rss;
if (rss_idx >= MLX5E_MAX_NUM_RSS)
return -EINVAL;
rss = res->rss[rss_idx];
if (!rss)
return -ENOENT;
return mlx5e_rss_set_rxfh(rss, indir, key, hfunc, res->rss_rqns, res->rss_nch);
}
u8 mlx5e_rx_res_rss_get_hash_fields(struct mlx5e_rx_res *res, enum mlx5_traffic_types tt)
{
struct mlx5e_rss *rss = res->rss[0];
return mlx5e_rss_get_hash_fields(rss, tt);
}
int mlx5e_rx_res_rss_set_hash_fields(struct mlx5e_rx_res *res, enum mlx5_traffic_types tt,
u8 rx_hash_fields)
{
struct mlx5e_rss *rss = res->rss[0];
return mlx5e_rss_set_hash_fields(rss, tt, rx_hash_fields);
}
int mlx5e_rx_res_rss_cnt(struct mlx5e_rx_res *res)
{
int i, cnt;
cnt = 0;
for (i = 0; i < MLX5E_MAX_NUM_RSS; i++)
if (res->rss[i])
cnt++;
return cnt;
}
int mlx5e_rx_res_rss_index(struct mlx5e_rx_res *res, struct mlx5e_rss *rss)
{
int i;
if (!rss)
return -EINVAL;
for (i = 0; i < MLX5E_MAX_NUM_RSS; i++)
if (rss == res->rss[i])
return i;
return -ENOENT;
}
struct mlx5e_rss *mlx5e_rx_res_rss_get(struct mlx5e_rx_res *res, u32 rss_idx)
{
if (rss_idx >= MLX5E_MAX_NUM_RSS)
return NULL;
return res->rss[rss_idx];
}
/* End of API rx_res_rss_* */
struct mlx5e_rx_res *mlx5e_rx_res_alloc(void)
{
return kvzalloc(sizeof(struct mlx5e_rx_res), GFP_KERNEL);
}
static int mlx5e_rx_res_channels_init(struct mlx5e_rx_res *res,
const struct mlx5e_lro_param *init_lro_param)
{
bool inner_ft_support = res->features & MLX5E_RX_RES_FEATURE_INNER_FT;
struct mlx5e_tir_builder *builder;
int err = 0;
int ix;
builder = mlx5e_tir_builder_alloc(false);
if (!builder)
return -ENOMEM;
res->channels = kvcalloc(res->max_nch, sizeof(*res->channels), GFP_KERNEL);
if (!res->channels) {
err = -ENOMEM;
goto out;
}
for (ix = 0; ix < res->max_nch; ix++) {
err = mlx5e_rqt_init_direct(&res->channels[ix].direct_rqt,
res->mdev, false, res->drop_rqn);
if (err) {
mlx5_core_warn(res->mdev, "Failed to create a direct RQT: err = %d, ix = %u\n",
err, ix);
goto err_destroy_direct_rqts;
}
}
for (ix = 0; ix < res->max_nch; ix++) {
mlx5e_tir_builder_build_rqt(builder, res->mdev->mlx5e_res.hw_objs.td.tdn,
mlx5e_rqt_get_rqtn(&res->channels[ix].direct_rqt),
inner_ft_support);
mlx5e_tir_builder_build_lro(builder, init_lro_param);
mlx5e_tir_builder_build_direct(builder);
err = mlx5e_tir_init(&res->channels[ix].direct_tir, builder, res->mdev, true);
if (err) {
mlx5_core_warn(res->mdev, "Failed to create a direct TIR: err = %d, ix = %u\n",
err, ix);
goto err_destroy_direct_tirs;
}
mlx5e_tir_builder_clear(builder);
}
if (!(res->features & MLX5E_RX_RES_FEATURE_XSK))
goto out;
for (ix = 0; ix < res->max_nch; ix++) {
err = mlx5e_rqt_init_direct(&res->channels[ix].xsk_rqt,
res->mdev, false, res->drop_rqn);
if (err) {
mlx5_core_warn(res->mdev, "Failed to create an XSK RQT: err = %d, ix = %u\n",
err, ix);
goto err_destroy_xsk_rqts;
}
}
for (ix = 0; ix < res->max_nch; ix++) {
mlx5e_tir_builder_build_rqt(builder, res->mdev->mlx5e_res.hw_objs.td.tdn,
mlx5e_rqt_get_rqtn(&res->channels[ix].xsk_rqt),
inner_ft_support);
mlx5e_tir_builder_build_lro(builder, init_lro_param);
mlx5e_tir_builder_build_direct(builder);
err = mlx5e_tir_init(&res->channels[ix].xsk_tir, builder, res->mdev, true);
if (err) {
mlx5_core_warn(res->mdev, "Failed to create an XSK TIR: err = %d, ix = %u\n",
err, ix);
goto err_destroy_xsk_tirs;
}
mlx5e_tir_builder_clear(builder);
}
goto out;
err_destroy_xsk_tirs:
while (--ix >= 0)
mlx5e_tir_destroy(&res->channels[ix].xsk_tir);
ix = res->max_nch;
err_destroy_xsk_rqts:
while (--ix >= 0)
mlx5e_rqt_destroy(&res->channels[ix].xsk_rqt);
ix = res->max_nch;
err_destroy_direct_tirs:
while (--ix >= 0)
mlx5e_tir_destroy(&res->channels[ix].direct_tir);
ix = res->max_nch;
err_destroy_direct_rqts:
while (--ix >= 0)
mlx5e_rqt_destroy(&res->channels[ix].direct_rqt);
kvfree(res->channels);
out:
mlx5e_tir_builder_free(builder);
return err;
}
static int mlx5e_rx_res_ptp_init(struct mlx5e_rx_res *res)
{
bool inner_ft_support = res->features & MLX5E_RX_RES_FEATURE_INNER_FT;
struct mlx5e_tir_builder *builder;
int err;
builder = mlx5e_tir_builder_alloc(false);
if (!builder)
return -ENOMEM;
err = mlx5e_rqt_init_direct(&res->ptp.rqt, res->mdev, false, res->drop_rqn);
if (err)
goto out;
mlx5e_tir_builder_build_rqt(builder, res->mdev->mlx5e_res.hw_objs.td.tdn,
mlx5e_rqt_get_rqtn(&res->ptp.rqt),
inner_ft_support);
mlx5e_tir_builder_build_direct(builder);
err = mlx5e_tir_init(&res->ptp.tir, builder, res->mdev, true);
if (err)
goto err_destroy_ptp_rqt;
goto out;
err_destroy_ptp_rqt:
mlx5e_rqt_destroy(&res->ptp.rqt);
out:
mlx5e_tir_builder_free(builder);
return err;
}
static void mlx5e_rx_res_channels_destroy(struct mlx5e_rx_res *res)
{
unsigned int ix;
for (ix = 0; ix < res->max_nch; ix++) {
mlx5e_tir_destroy(&res->channels[ix].direct_tir);
mlx5e_rqt_destroy(&res->channels[ix].direct_rqt);
if (!(res->features & MLX5E_RX_RES_FEATURE_XSK))
continue;
mlx5e_tir_destroy(&res->channels[ix].xsk_tir);
mlx5e_rqt_destroy(&res->channels[ix].xsk_rqt);
}
kvfree(res->channels);
}
static void mlx5e_rx_res_ptp_destroy(struct mlx5e_rx_res *res)
{
mlx5e_tir_destroy(&res->ptp.tir);
mlx5e_rqt_destroy(&res->ptp.rqt);
}
int mlx5e_rx_res_init(struct mlx5e_rx_res *res, struct mlx5_core_dev *mdev,
enum mlx5e_rx_res_features features, unsigned int max_nch,
u32 drop_rqn, const struct mlx5e_lro_param *init_lro_param,
unsigned int init_nch)
{
int err;
res->mdev = mdev;
res->features = features;
res->max_nch = max_nch;
res->drop_rqn = drop_rqn;
err = mlx5e_rx_res_rss_init_def(res, init_lro_param, init_nch);
if (err)
goto err_out;
err = mlx5e_rx_res_channels_init(res, init_lro_param);
if (err)
goto err_rss_destroy;
err = mlx5e_rx_res_ptp_init(res);
if (err)
goto err_channels_destroy;
return 0;
err_channels_destroy:
mlx5e_rx_res_channels_destroy(res);
err_rss_destroy:
__mlx5e_rx_res_rss_destroy(res, 0);
err_out:
return err;
}
void mlx5e_rx_res_destroy(struct mlx5e_rx_res *res)
{
mlx5e_rx_res_ptp_destroy(res);
mlx5e_rx_res_channels_destroy(res);
mlx5e_rx_res_rss_destroy_all(res);
}
void mlx5e_rx_res_free(struct mlx5e_rx_res *res)
{
kvfree(res);
}
u32 mlx5e_rx_res_get_tirn_direct(struct mlx5e_rx_res *res, unsigned int ix)
{
return mlx5e_tir_get_tirn(&res->channels[ix].direct_tir);
}
u32 mlx5e_rx_res_get_tirn_xsk(struct mlx5e_rx_res *res, unsigned int ix)
{
WARN_ON(!(res->features & MLX5E_RX_RES_FEATURE_XSK));
return mlx5e_tir_get_tirn(&res->channels[ix].xsk_tir);
}
u32 mlx5e_rx_res_get_tirn_rss(struct mlx5e_rx_res *res, enum mlx5_traffic_types tt)
{
struct mlx5e_rss *rss = res->rss[0];
return mlx5e_rss_get_tirn(rss, tt, false);
}
u32 mlx5e_rx_res_get_tirn_rss_inner(struct mlx5e_rx_res *res, enum mlx5_traffic_types tt)
{
struct mlx5e_rss *rss = res->rss[0];
return mlx5e_rss_get_tirn(rss, tt, true);
}
u32 mlx5e_rx_res_get_tirn_ptp(struct mlx5e_rx_res *res)
{
WARN_ON(!(res->features & MLX5E_RX_RES_FEATURE_PTP));
return mlx5e_tir_get_tirn(&res->ptp.tir);
}
u32 mlx5e_rx_res_get_rqtn_direct(struct mlx5e_rx_res *res, unsigned int ix)
{
return mlx5e_rqt_get_rqtn(&res->channels[ix].direct_rqt);
}
void mlx5e_rx_res_channels_activate(struct mlx5e_rx_res *res, struct mlx5e_channels *chs)
{
unsigned int nch, ix;
int err;
nch = mlx5e_channels_get_num(chs);
for (ix = 0; ix < chs->num; ix++)
mlx5e_channels_get_regular_rqn(chs, ix, &res->rss_rqns[ix]);
res->rss_nch = chs->num;
mlx5e_rx_res_rss_enable(res);
for (ix = 0; ix < nch; ix++) {
u32 rqn;
mlx5e_channels_get_regular_rqn(chs, ix, &rqn);
err = mlx5e_rqt_redirect_direct(&res->channels[ix].direct_rqt, rqn);
if (err)
mlx5_core_warn(res->mdev, "Failed to redirect direct RQT %#x to RQ %#x (channel %u): err = %d\n",
mlx5e_rqt_get_rqtn(&res->channels[ix].direct_rqt),
rqn, ix, err);
if (!(res->features & MLX5E_RX_RES_FEATURE_XSK))
continue;
if (!mlx5e_channels_get_xsk_rqn(chs, ix, &rqn))
rqn = res->drop_rqn;
err = mlx5e_rqt_redirect_direct(&res->channels[ix].xsk_rqt, rqn);
if (err)
mlx5_core_warn(res->mdev, "Failed to redirect XSK RQT %#x to RQ %#x (channel %u): err = %d\n",
mlx5e_rqt_get_rqtn(&res->channels[ix].xsk_rqt),
rqn, ix, err);
}
for (ix = nch; ix < res->max_nch; ix++) {
err = mlx5e_rqt_redirect_direct(&res->channels[ix].direct_rqt, res->drop_rqn);
if (err)
mlx5_core_warn(res->mdev, "Failed to redirect direct RQT %#x to drop RQ %#x (channel %u): err = %d\n",
mlx5e_rqt_get_rqtn(&res->channels[ix].direct_rqt),
res->drop_rqn, ix, err);
if (!(res->features & MLX5E_RX_RES_FEATURE_XSK))
continue;
err = mlx5e_rqt_redirect_direct(&res->channels[ix].xsk_rqt, res->drop_rqn);
if (err)
mlx5_core_warn(res->mdev, "Failed to redirect XSK RQT %#x to drop RQ %#x (channel %u): err = %d\n",
mlx5e_rqt_get_rqtn(&res->channels[ix].xsk_rqt),
res->drop_rqn, ix, err);
}
if (res->features & MLX5E_RX_RES_FEATURE_PTP) {
u32 rqn;
if (mlx5e_channels_get_ptp_rqn(chs, &rqn))
rqn = res->drop_rqn;
err = mlx5e_rqt_redirect_direct(&res->ptp.rqt, rqn);
if (err)
mlx5_core_warn(res->mdev, "Failed to redirect direct RQT %#x to RQ %#x (PTP): err = %d\n",
mlx5e_rqt_get_rqtn(&res->ptp.rqt),
rqn, err);
}
}
void mlx5e_rx_res_channels_deactivate(struct mlx5e_rx_res *res)
{
unsigned int ix;
int err;
mlx5e_rx_res_rss_disable(res);
for (ix = 0; ix < res->max_nch; ix++) {
err = mlx5e_rqt_redirect_direct(&res->channels[ix].direct_rqt, res->drop_rqn);
if (err)
mlx5_core_warn(res->mdev, "Failed to redirect direct RQT %#x to drop RQ %#x (channel %u): err = %d\n",
mlx5e_rqt_get_rqtn(&res->channels[ix].direct_rqt),
res->drop_rqn, ix, err);
if (!(res->features & MLX5E_RX_RES_FEATURE_XSK))
continue;
err = mlx5e_rqt_redirect_direct(&res->channels[ix].xsk_rqt, res->drop_rqn);
if (err)
mlx5_core_warn(res->mdev, "Failed to redirect XSK RQT %#x to drop RQ %#x (channel %u): err = %d\n",
mlx5e_rqt_get_rqtn(&res->channels[ix].xsk_rqt),
res->drop_rqn, ix, err);
}
if (res->features & MLX5E_RX_RES_FEATURE_PTP) {
err = mlx5e_rqt_redirect_direct(&res->ptp.rqt, res->drop_rqn);
if (err)
mlx5_core_warn(res->mdev, "Failed to redirect direct RQT %#x to drop RQ %#x (PTP): err = %d\n",
mlx5e_rqt_get_rqtn(&res->ptp.rqt),
res->drop_rqn, err);
}
}
int mlx5e_rx_res_xsk_activate(struct mlx5e_rx_res *res, struct mlx5e_channels *chs,
unsigned int ix)
{
u32 rqn;
int err;
if (!mlx5e_channels_get_xsk_rqn(chs, ix, &rqn))
return -EINVAL;
err = mlx5e_rqt_redirect_direct(&res->channels[ix].xsk_rqt, rqn);
if (err)
mlx5_core_warn(res->mdev, "Failed to redirect XSK RQT %#x to XSK RQ %#x (channel %u): err = %d\n",
mlx5e_rqt_get_rqtn(&res->channels[ix].xsk_rqt),
rqn, ix, err);
return err;
}
int mlx5e_rx_res_xsk_deactivate(struct mlx5e_rx_res *res, unsigned int ix)
{
int err;
err = mlx5e_rqt_redirect_direct(&res->channels[ix].xsk_rqt, res->drop_rqn);
if (err)
mlx5_core_warn(res->mdev, "Failed to redirect XSK RQT %#x to drop RQ %#x (channel %u): err = %d\n",
mlx5e_rqt_get_rqtn(&res->channels[ix].xsk_rqt),
res->drop_rqn, ix, err);
return err;
}
int mlx5e_rx_res_lro_set_param(struct mlx5e_rx_res *res, struct mlx5e_lro_param *lro_param)
{
struct mlx5e_tir_builder *builder;
int err, final_err;
unsigned int ix;
builder = mlx5e_tir_builder_alloc(true);
if (!builder)
return -ENOMEM;
mlx5e_tir_builder_build_lro(builder, lro_param);
final_err = 0;
for (ix = 0; ix < MLX5E_MAX_NUM_RSS; ix++) {
struct mlx5e_rss *rss = res->rss[ix];
if (!rss)
continue;
err = mlx5e_rss_lro_set_param(rss, lro_param);
if (err)
final_err = final_err ? : err;
}
for (ix = 0; ix < res->max_nch; ix++) {
err = mlx5e_tir_modify(&res->channels[ix].direct_tir, builder);
if (err) {
mlx5_core_warn(res->mdev, "Failed to update LRO state of direct TIR %#x for channel %u: err = %d\n",
mlx5e_tir_get_tirn(&res->channels[ix].direct_tir), ix, err);
if (!final_err)
final_err = err;
}
}
mlx5e_tir_builder_free(builder);
return final_err;
}
struct mlx5e_rss_params_hash mlx5e_rx_res_get_current_hash(struct mlx5e_rx_res *res)
{
return mlx5e_rss_get_hash(res->rss[0]);
}
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