blob: 41ef6eb70a5852e5b7df70b6646edace7a11ad9f [file] [log] [blame]
/*
* Copyright (c) 2015-2016, 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 <net/tc_act/tc_gact.h>
#include <net/pkt_cls.h>
#include <linux/mlx5/fs.h>
#include <net/vxlan.h>
#include <net/geneve.h>
#include <linux/bpf.h>
#include <linux/if_bridge.h>
#include <net/page_pool.h>
#include <net/xdp_sock_drv.h>
#include "eswitch.h"
#include "en.h"
#include "en/txrx.h"
#include "en_tc.h"
#include "en_rep.h"
#include "en_accel/ipsec.h"
#include "en_accel/en_accel.h"
#include "en_accel/tls.h"
#include "accel/ipsec.h"
#include "accel/tls.h"
#include "lib/vxlan.h"
#include "lib/clock.h"
#include "en/port.h"
#include "en/xdp.h"
#include "lib/eq.h"
#include "en/monitor_stats.h"
#include "en/health.h"
#include "en/params.h"
#include "en/xsk/pool.h"
#include "en/xsk/setup.h"
#include "en/xsk/rx.h"
#include "en/xsk/tx.h"
#include "en/hv_vhca_stats.h"
#include "en/devlink.h"
#include "lib/mlx5.h"
#include "en/ptp.h"
#include "qos.h"
#include "en/trap.h"
#include "fpga/ipsec.h"
bool mlx5e_check_fragmented_striding_rq_cap(struct mlx5_core_dev *mdev)
{
bool striding_rq_umr = MLX5_CAP_GEN(mdev, striding_rq) &&
MLX5_CAP_GEN(mdev, umr_ptr_rlky) &&
MLX5_CAP_ETH(mdev, reg_umr_sq);
u16 max_wqe_sz_cap = MLX5_CAP_GEN(mdev, max_wqe_sz_sq);
bool inline_umr = MLX5E_UMR_WQE_INLINE_SZ <= max_wqe_sz_cap;
if (!striding_rq_umr)
return false;
if (!inline_umr) {
mlx5_core_warn(mdev, "Cannot support Striding RQ: UMR WQE size (%d) exceeds maximum supported (%d).\n",
(int)MLX5E_UMR_WQE_INLINE_SZ, max_wqe_sz_cap);
return false;
}
return true;
}
void mlx5e_update_carrier(struct mlx5e_priv *priv)
{
struct mlx5_core_dev *mdev = priv->mdev;
u8 port_state;
bool up;
port_state = mlx5_query_vport_state(mdev,
MLX5_VPORT_STATE_OP_MOD_VNIC_VPORT,
0);
up = port_state == VPORT_STATE_UP;
if (up == netif_carrier_ok(priv->netdev))
netif_carrier_event(priv->netdev);
if (up) {
netdev_info(priv->netdev, "Link up\n");
netif_carrier_on(priv->netdev);
} else {
netdev_info(priv->netdev, "Link down\n");
netif_carrier_off(priv->netdev);
}
}
static void mlx5e_update_carrier_work(struct work_struct *work)
{
struct mlx5e_priv *priv = container_of(work, struct mlx5e_priv,
update_carrier_work);
mutex_lock(&priv->state_lock);
if (test_bit(MLX5E_STATE_OPENED, &priv->state))
if (priv->profile->update_carrier)
priv->profile->update_carrier(priv);
mutex_unlock(&priv->state_lock);
}
static void mlx5e_update_stats_work(struct work_struct *work)
{
struct mlx5e_priv *priv = container_of(work, struct mlx5e_priv,
update_stats_work);
mutex_lock(&priv->state_lock);
priv->profile->update_stats(priv);
mutex_unlock(&priv->state_lock);
}
void mlx5e_queue_update_stats(struct mlx5e_priv *priv)
{
if (!priv->profile->update_stats)
return;
if (unlikely(test_bit(MLX5E_STATE_DESTROYING, &priv->state)))
return;
queue_work(priv->wq, &priv->update_stats_work);
}
static int async_event(struct notifier_block *nb, unsigned long event, void *data)
{
struct mlx5e_priv *priv = container_of(nb, struct mlx5e_priv, events_nb);
struct mlx5_eqe *eqe = data;
if (event != MLX5_EVENT_TYPE_PORT_CHANGE)
return NOTIFY_DONE;
switch (eqe->sub_type) {
case MLX5_PORT_CHANGE_SUBTYPE_DOWN:
case MLX5_PORT_CHANGE_SUBTYPE_ACTIVE:
queue_work(priv->wq, &priv->update_carrier_work);
break;
default:
return NOTIFY_DONE;
}
return NOTIFY_OK;
}
static void mlx5e_enable_async_events(struct mlx5e_priv *priv)
{
priv->events_nb.notifier_call = async_event;
mlx5_notifier_register(priv->mdev, &priv->events_nb);
}
static void mlx5e_disable_async_events(struct mlx5e_priv *priv)
{
mlx5_notifier_unregister(priv->mdev, &priv->events_nb);
}
static int blocking_event(struct notifier_block *nb, unsigned long event, void *data)
{
struct mlx5e_priv *priv = container_of(nb, struct mlx5e_priv, blocking_events_nb);
int err;
switch (event) {
case MLX5_DRIVER_EVENT_TYPE_TRAP:
err = mlx5e_handle_trap_event(priv, data);
break;
default:
netdev_warn(priv->netdev, "Sync event: Unknown event %ld\n", event);
err = -EINVAL;
}
return err;
}
static void mlx5e_enable_blocking_events(struct mlx5e_priv *priv)
{
priv->blocking_events_nb.notifier_call = blocking_event;
mlx5_blocking_notifier_register(priv->mdev, &priv->blocking_events_nb);
}
static void mlx5e_disable_blocking_events(struct mlx5e_priv *priv)
{
mlx5_blocking_notifier_unregister(priv->mdev, &priv->blocking_events_nb);
}
static inline void mlx5e_build_umr_wqe(struct mlx5e_rq *rq,
struct mlx5e_icosq *sq,
struct mlx5e_umr_wqe *wqe)
{
struct mlx5_wqe_ctrl_seg *cseg = &wqe->ctrl;
struct mlx5_wqe_umr_ctrl_seg *ucseg = &wqe->uctrl;
u8 ds_cnt = DIV_ROUND_UP(MLX5E_UMR_WQE_INLINE_SZ, MLX5_SEND_WQE_DS);
cseg->qpn_ds = cpu_to_be32((sq->sqn << MLX5_WQE_CTRL_QPN_SHIFT) |
ds_cnt);
cseg->umr_mkey = rq->mkey_be;
ucseg->flags = MLX5_UMR_TRANSLATION_OFFSET_EN | MLX5_UMR_INLINE;
ucseg->xlt_octowords =
cpu_to_be16(MLX5_MTT_OCTW(MLX5_MPWRQ_PAGES_PER_WQE));
ucseg->mkey_mask = cpu_to_be64(MLX5_MKEY_MASK_FREE);
}
static int mlx5e_rq_alloc_mpwqe_info(struct mlx5e_rq *rq, int node)
{
int wq_sz = mlx5_wq_ll_get_size(&rq->mpwqe.wq);
rq->mpwqe.info = kvzalloc_node(array_size(wq_sz,
sizeof(*rq->mpwqe.info)),
GFP_KERNEL, node);
if (!rq->mpwqe.info)
return -ENOMEM;
mlx5e_build_umr_wqe(rq, rq->icosq, &rq->mpwqe.umr_wqe);
return 0;
}
static int mlx5e_create_umr_mkey(struct mlx5_core_dev *mdev,
u64 npages, u8 page_shift,
struct mlx5_core_mkey *umr_mkey,
dma_addr_t filler_addr)
{
struct mlx5_mtt *mtt;
int inlen;
void *mkc;
u32 *in;
int err;
int i;
inlen = MLX5_ST_SZ_BYTES(create_mkey_in) + sizeof(*mtt) * npages;
in = kvzalloc(inlen, GFP_KERNEL);
if (!in)
return -ENOMEM;
mkc = MLX5_ADDR_OF(create_mkey_in, in, memory_key_mkey_entry);
MLX5_SET(mkc, mkc, free, 1);
MLX5_SET(mkc, mkc, umr_en, 1);
MLX5_SET(mkc, mkc, lw, 1);
MLX5_SET(mkc, mkc, lr, 1);
MLX5_SET(mkc, mkc, access_mode_1_0, MLX5_MKC_ACCESS_MODE_MTT);
mlx5e_mkey_set_relaxed_ordering(mdev, mkc);
MLX5_SET(mkc, mkc, qpn, 0xffffff);
MLX5_SET(mkc, mkc, pd, mdev->mlx5e_res.hw_objs.pdn);
MLX5_SET64(mkc, mkc, len, npages << page_shift);
MLX5_SET(mkc, mkc, translations_octword_size,
MLX5_MTT_OCTW(npages));
MLX5_SET(mkc, mkc, log_page_size, page_shift);
MLX5_SET(create_mkey_in, in, translations_octword_actual_size,
MLX5_MTT_OCTW(npages));
/* Initialize the mkey with all MTTs pointing to a default
* page (filler_addr). When the channels are activated, UMR
* WQEs will redirect the RX WQEs to the actual memory from
* the RQ's pool, while the gaps (wqe_overflow) remain mapped
* to the default page.
*/
mtt = MLX5_ADDR_OF(create_mkey_in, in, klm_pas_mtt);
for (i = 0 ; i < npages ; i++)
mtt[i].ptag = cpu_to_be64(filler_addr);
err = mlx5_core_create_mkey(mdev, umr_mkey, in, inlen);
kvfree(in);
return err;
}
static int mlx5e_create_rq_umr_mkey(struct mlx5_core_dev *mdev, struct mlx5e_rq *rq)
{
u64 num_mtts = MLX5E_REQUIRED_MTTS(mlx5_wq_ll_get_size(&rq->mpwqe.wq));
return mlx5e_create_umr_mkey(mdev, num_mtts, PAGE_SHIFT, &rq->umr_mkey,
rq->wqe_overflow.addr);
}
static u64 mlx5e_get_mpwqe_offset(u16 wqe_ix)
{
return MLX5E_REQUIRED_MTTS(wqe_ix) << PAGE_SHIFT;
}
static void mlx5e_init_frags_partition(struct mlx5e_rq *rq)
{
struct mlx5e_wqe_frag_info next_frag = {};
struct mlx5e_wqe_frag_info *prev = NULL;
int i;
next_frag.di = &rq->wqe.di[0];
for (i = 0; i < mlx5_wq_cyc_get_size(&rq->wqe.wq); i++) {
struct mlx5e_rq_frag_info *frag_info = &rq->wqe.info.arr[0];
struct mlx5e_wqe_frag_info *frag =
&rq->wqe.frags[i << rq->wqe.info.log_num_frags];
int f;
for (f = 0; f < rq->wqe.info.num_frags; f++, frag++) {
if (next_frag.offset + frag_info[f].frag_stride > PAGE_SIZE) {
next_frag.di++;
next_frag.offset = 0;
if (prev)
prev->last_in_page = true;
}
*frag = next_frag;
/* prepare next */
next_frag.offset += frag_info[f].frag_stride;
prev = frag;
}
}
if (prev)
prev->last_in_page = true;
}
int mlx5e_init_di_list(struct mlx5e_rq *rq, int wq_sz, int node)
{
int len = wq_sz << rq->wqe.info.log_num_frags;
rq->wqe.di = kvzalloc_node(array_size(len, sizeof(*rq->wqe.di)), GFP_KERNEL, node);
if (!rq->wqe.di)
return -ENOMEM;
mlx5e_init_frags_partition(rq);
return 0;
}
void mlx5e_free_di_list(struct mlx5e_rq *rq)
{
kvfree(rq->wqe.di);
}
static void mlx5e_rq_err_cqe_work(struct work_struct *recover_work)
{
struct mlx5e_rq *rq = container_of(recover_work, struct mlx5e_rq, recover_work);
mlx5e_reporter_rq_cqe_err(rq);
}
static int mlx5e_alloc_mpwqe_rq_drop_page(struct mlx5e_rq *rq)
{
rq->wqe_overflow.page = alloc_page(GFP_KERNEL);
if (!rq->wqe_overflow.page)
return -ENOMEM;
rq->wqe_overflow.addr = dma_map_page(rq->pdev, rq->wqe_overflow.page, 0,
PAGE_SIZE, rq->buff.map_dir);
if (dma_mapping_error(rq->pdev, rq->wqe_overflow.addr)) {
__free_page(rq->wqe_overflow.page);
return -ENOMEM;
}
return 0;
}
static void mlx5e_free_mpwqe_rq_drop_page(struct mlx5e_rq *rq)
{
dma_unmap_page(rq->pdev, rq->wqe_overflow.addr, PAGE_SIZE,
rq->buff.map_dir);
__free_page(rq->wqe_overflow.page);
}
static int mlx5e_init_rxq_rq(struct mlx5e_channel *c, struct mlx5e_params *params,
struct mlx5e_rq *rq)
{
struct mlx5_core_dev *mdev = c->mdev;
int err;
rq->wq_type = params->rq_wq_type;
rq->pdev = c->pdev;
rq->netdev = c->netdev;
rq->priv = c->priv;
rq->tstamp = c->tstamp;
rq->clock = &mdev->clock;
rq->icosq = &c->icosq;
rq->ix = c->ix;
rq->mdev = mdev;
rq->hw_mtu = MLX5E_SW2HW_MTU(params, params->sw_mtu);
rq->xdpsq = &c->rq_xdpsq;
rq->stats = &c->priv->channel_stats[c->ix].rq;
rq->ptp_cyc2time = mlx5_rq_ts_translator(mdev);
err = mlx5e_rq_set_handlers(rq, params, NULL);
if (err)
return err;
return xdp_rxq_info_reg(&rq->xdp_rxq, rq->netdev, rq->ix, 0);
}
static int mlx5e_alloc_rq(struct mlx5e_params *params,
struct mlx5e_xsk_param *xsk,
struct mlx5e_rq_param *rqp,
int node, struct mlx5e_rq *rq)
{
struct page_pool_params pp_params = { 0 };
struct mlx5_core_dev *mdev = rq->mdev;
void *rqc = rqp->rqc;
void *rqc_wq = MLX5_ADDR_OF(rqc, rqc, wq);
u32 pool_size;
int wq_sz;
int err;
int i;
rqp->wq.db_numa_node = node;
INIT_WORK(&rq->recover_work, mlx5e_rq_err_cqe_work);
if (params->xdp_prog)
bpf_prog_inc(params->xdp_prog);
RCU_INIT_POINTER(rq->xdp_prog, params->xdp_prog);
rq->buff.map_dir = params->xdp_prog ? DMA_BIDIRECTIONAL : DMA_FROM_DEVICE;
rq->buff.headroom = mlx5e_get_rq_headroom(mdev, params, xsk);
pool_size = 1 << params->log_rq_mtu_frames;
switch (rq->wq_type) {
case MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ:
err = mlx5_wq_ll_create(mdev, &rqp->wq, rqc_wq, &rq->mpwqe.wq,
&rq->wq_ctrl);
if (err)
goto err_rq_xdp_prog;
err = mlx5e_alloc_mpwqe_rq_drop_page(rq);
if (err)
goto err_rq_wq_destroy;
rq->mpwqe.wq.db = &rq->mpwqe.wq.db[MLX5_RCV_DBR];
wq_sz = mlx5_wq_ll_get_size(&rq->mpwqe.wq);
pool_size = MLX5_MPWRQ_PAGES_PER_WQE <<
mlx5e_mpwqe_get_log_rq_size(params, xsk);
rq->mpwqe.log_stride_sz = mlx5e_mpwqe_get_log_stride_size(mdev, params, xsk);
rq->mpwqe.num_strides =
BIT(mlx5e_mpwqe_get_log_num_strides(mdev, params, xsk));
rq->buff.frame0_sz = (1 << rq->mpwqe.log_stride_sz);
err = mlx5e_create_rq_umr_mkey(mdev, rq);
if (err)
goto err_rq_drop_page;
rq->mkey_be = cpu_to_be32(rq->umr_mkey.key);
err = mlx5e_rq_alloc_mpwqe_info(rq, node);
if (err)
goto err_rq_mkey;
break;
default: /* MLX5_WQ_TYPE_CYCLIC */
err = mlx5_wq_cyc_create(mdev, &rqp->wq, rqc_wq, &rq->wqe.wq,
&rq->wq_ctrl);
if (err)
goto err_rq_xdp_prog;
rq->wqe.wq.db = &rq->wqe.wq.db[MLX5_RCV_DBR];
wq_sz = mlx5_wq_cyc_get_size(&rq->wqe.wq);
rq->wqe.info = rqp->frags_info;
rq->buff.frame0_sz = rq->wqe.info.arr[0].frag_stride;
rq->wqe.frags =
kvzalloc_node(array_size(sizeof(*rq->wqe.frags),
(wq_sz << rq->wqe.info.log_num_frags)),
GFP_KERNEL, node);
if (!rq->wqe.frags) {
err = -ENOMEM;
goto err_rq_wq_destroy;
}
err = mlx5e_init_di_list(rq, wq_sz, node);
if (err)
goto err_rq_frags;
rq->mkey_be = cpu_to_be32(mdev->mlx5e_res.hw_objs.mkey.key);
}
if (xsk) {
err = xdp_rxq_info_reg_mem_model(&rq->xdp_rxq,
MEM_TYPE_XSK_BUFF_POOL, NULL);
xsk_pool_set_rxq_info(rq->xsk_pool, &rq->xdp_rxq);
} else {
/* Create a page_pool and register it with rxq */
pp_params.order = 0;
pp_params.flags = 0; /* No-internal DMA mapping in page_pool */
pp_params.pool_size = pool_size;
pp_params.nid = node;
pp_params.dev = rq->pdev;
pp_params.dma_dir = rq->buff.map_dir;
/* page_pool can be used even when there is no rq->xdp_prog,
* given page_pool does not handle DMA mapping there is no
* required state to clear. And page_pool gracefully handle
* elevated refcnt.
*/
rq->page_pool = page_pool_create(&pp_params);
if (IS_ERR(rq->page_pool)) {
err = PTR_ERR(rq->page_pool);
rq->page_pool = NULL;
goto err_free_by_rq_type;
}
if (xdp_rxq_info_is_reg(&rq->xdp_rxq))
err = xdp_rxq_info_reg_mem_model(&rq->xdp_rxq,
MEM_TYPE_PAGE_POOL, rq->page_pool);
}
if (err)
goto err_free_by_rq_type;
for (i = 0; i < wq_sz; i++) {
if (rq->wq_type == MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ) {
struct mlx5e_rx_wqe_ll *wqe =
mlx5_wq_ll_get_wqe(&rq->mpwqe.wq, i);
u32 byte_count =
rq->mpwqe.num_strides << rq->mpwqe.log_stride_sz;
u64 dma_offset = mlx5e_get_mpwqe_offset(i);
wqe->data[0].addr = cpu_to_be64(dma_offset + rq->buff.headroom);
wqe->data[0].byte_count = cpu_to_be32(byte_count);
wqe->data[0].lkey = rq->mkey_be;
} else {
struct mlx5e_rx_wqe_cyc *wqe =
mlx5_wq_cyc_get_wqe(&rq->wqe.wq, i);
int f;
for (f = 0; f < rq->wqe.info.num_frags; f++) {
u32 frag_size = rq->wqe.info.arr[f].frag_size |
MLX5_HW_START_PADDING;
wqe->data[f].byte_count = cpu_to_be32(frag_size);
wqe->data[f].lkey = rq->mkey_be;
}
/* check if num_frags is not a pow of two */
if (rq->wqe.info.num_frags < (1 << rq->wqe.info.log_num_frags)) {
wqe->data[f].byte_count = 0;
wqe->data[f].lkey = cpu_to_be32(MLX5_INVALID_LKEY);
wqe->data[f].addr = 0;
}
}
}
INIT_WORK(&rq->dim.work, mlx5e_rx_dim_work);
switch (params->rx_cq_moderation.cq_period_mode) {
case MLX5_CQ_PERIOD_MODE_START_FROM_CQE:
rq->dim.mode = DIM_CQ_PERIOD_MODE_START_FROM_CQE;
break;
case MLX5_CQ_PERIOD_MODE_START_FROM_EQE:
default:
rq->dim.mode = DIM_CQ_PERIOD_MODE_START_FROM_EQE;
}
rq->page_cache.head = 0;
rq->page_cache.tail = 0;
return 0;
err_free_by_rq_type:
switch (rq->wq_type) {
case MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ:
kvfree(rq->mpwqe.info);
err_rq_mkey:
mlx5_core_destroy_mkey(mdev, &rq->umr_mkey);
err_rq_drop_page:
mlx5e_free_mpwqe_rq_drop_page(rq);
break;
default: /* MLX5_WQ_TYPE_CYCLIC */
mlx5e_free_di_list(rq);
err_rq_frags:
kvfree(rq->wqe.frags);
}
err_rq_wq_destroy:
mlx5_wq_destroy(&rq->wq_ctrl);
err_rq_xdp_prog:
if (params->xdp_prog)
bpf_prog_put(params->xdp_prog);
return err;
}
static void mlx5e_free_rq(struct mlx5e_rq *rq)
{
struct bpf_prog *old_prog;
int i;
if (xdp_rxq_info_is_reg(&rq->xdp_rxq)) {
old_prog = rcu_dereference_protected(rq->xdp_prog,
lockdep_is_held(&rq->priv->state_lock));
if (old_prog)
bpf_prog_put(old_prog);
}
switch (rq->wq_type) {
case MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ:
kvfree(rq->mpwqe.info);
mlx5_core_destroy_mkey(rq->mdev, &rq->umr_mkey);
mlx5e_free_mpwqe_rq_drop_page(rq);
break;
default: /* MLX5_WQ_TYPE_CYCLIC */
kvfree(rq->wqe.frags);
mlx5e_free_di_list(rq);
}
for (i = rq->page_cache.head; i != rq->page_cache.tail;
i = (i + 1) & (MLX5E_CACHE_SIZE - 1)) {
struct mlx5e_dma_info *dma_info = &rq->page_cache.page_cache[i];
/* With AF_XDP, page_cache is not used, so this loop is not
* entered, and it's safe to call mlx5e_page_release_dynamic
* directly.
*/
mlx5e_page_release_dynamic(rq, dma_info, false);
}
xdp_rxq_info_unreg(&rq->xdp_rxq);
page_pool_destroy(rq->page_pool);
mlx5_wq_destroy(&rq->wq_ctrl);
}
int mlx5e_create_rq(struct mlx5e_rq *rq, struct mlx5e_rq_param *param)
{
struct mlx5_core_dev *mdev = rq->mdev;
u8 ts_format;
void *in;
void *rqc;
void *wq;
int inlen;
int err;
inlen = MLX5_ST_SZ_BYTES(create_rq_in) +
sizeof(u64) * rq->wq_ctrl.buf.npages;
in = kvzalloc(inlen, GFP_KERNEL);
if (!in)
return -ENOMEM;
ts_format = mlx5_is_real_time_rq(mdev) ?
MLX5_TIMESTAMP_FORMAT_REAL_TIME :
MLX5_TIMESTAMP_FORMAT_FREE_RUNNING;
rqc = MLX5_ADDR_OF(create_rq_in, in, ctx);
wq = MLX5_ADDR_OF(rqc, rqc, wq);
memcpy(rqc, param->rqc, sizeof(param->rqc));
MLX5_SET(rqc, rqc, cqn, rq->cq.mcq.cqn);
MLX5_SET(rqc, rqc, state, MLX5_RQC_STATE_RST);
MLX5_SET(rqc, rqc, ts_format, ts_format);
MLX5_SET(wq, wq, log_wq_pg_sz, rq->wq_ctrl.buf.page_shift -
MLX5_ADAPTER_PAGE_SHIFT);
MLX5_SET64(wq, wq, dbr_addr, rq->wq_ctrl.db.dma);
mlx5_fill_page_frag_array(&rq->wq_ctrl.buf,
(__be64 *)MLX5_ADDR_OF(wq, wq, pas));
err = mlx5_core_create_rq(mdev, in, inlen, &rq->rqn);
kvfree(in);
return err;
}
int mlx5e_modify_rq_state(struct mlx5e_rq *rq, int curr_state, int next_state)
{
struct mlx5_core_dev *mdev = rq->mdev;
void *in;
void *rqc;
int inlen;
int err;
inlen = MLX5_ST_SZ_BYTES(modify_rq_in);
in = kvzalloc(inlen, GFP_KERNEL);
if (!in)
return -ENOMEM;
if (curr_state == MLX5_RQC_STATE_RST && next_state == MLX5_RQC_STATE_RDY)
mlx5e_rqwq_reset(rq);
rqc = MLX5_ADDR_OF(modify_rq_in, in, ctx);
MLX5_SET(modify_rq_in, in, rq_state, curr_state);
MLX5_SET(rqc, rqc, state, next_state);
err = mlx5_core_modify_rq(mdev, rq->rqn, in);
kvfree(in);
return err;
}
static int mlx5e_modify_rq_scatter_fcs(struct mlx5e_rq *rq, bool enable)
{
struct mlx5_core_dev *mdev = rq->mdev;
void *in;
void *rqc;
int inlen;
int err;
inlen = MLX5_ST_SZ_BYTES(modify_rq_in);
in = kvzalloc(inlen, GFP_KERNEL);
if (!in)
return -ENOMEM;
rqc = MLX5_ADDR_OF(modify_rq_in, in, ctx);
MLX5_SET(modify_rq_in, in, rq_state, MLX5_RQC_STATE_RDY);
MLX5_SET64(modify_rq_in, in, modify_bitmask,
MLX5_MODIFY_RQ_IN_MODIFY_BITMASK_SCATTER_FCS);
MLX5_SET(rqc, rqc, scatter_fcs, enable);
MLX5_SET(rqc, rqc, state, MLX5_RQC_STATE_RDY);
err = mlx5_core_modify_rq(mdev, rq->rqn, in);
kvfree(in);
return err;
}
static int mlx5e_modify_rq_vsd(struct mlx5e_rq *rq, bool vsd)
{
struct mlx5_core_dev *mdev = rq->mdev;
void *in;
void *rqc;
int inlen;
int err;
inlen = MLX5_ST_SZ_BYTES(modify_rq_in);
in = kvzalloc(inlen, GFP_KERNEL);
if (!in)
return -ENOMEM;
rqc = MLX5_ADDR_OF(modify_rq_in, in, ctx);
MLX5_SET(modify_rq_in, in, rq_state, MLX5_RQC_STATE_RDY);
MLX5_SET64(modify_rq_in, in, modify_bitmask,
MLX5_MODIFY_RQ_IN_MODIFY_BITMASK_VSD);
MLX5_SET(rqc, rqc, vsd, vsd);
MLX5_SET(rqc, rqc, state, MLX5_RQC_STATE_RDY);
err = mlx5_core_modify_rq(mdev, rq->rqn, in);
kvfree(in);
return err;
}
void mlx5e_destroy_rq(struct mlx5e_rq *rq)
{
mlx5_core_destroy_rq(rq->mdev, rq->rqn);
}
int mlx5e_wait_for_min_rx_wqes(struct mlx5e_rq *rq, int wait_time)
{
unsigned long exp_time = jiffies + msecs_to_jiffies(wait_time);
u16 min_wqes = mlx5_min_rx_wqes(rq->wq_type, mlx5e_rqwq_get_size(rq));
do {
if (mlx5e_rqwq_get_cur_sz(rq) >= min_wqes)
return 0;
msleep(20);
} while (time_before(jiffies, exp_time));
netdev_warn(rq->netdev, "Failed to get min RX wqes on Channel[%d] RQN[0x%x] wq cur_sz(%d) min_rx_wqes(%d)\n",
rq->ix, rq->rqn, mlx5e_rqwq_get_cur_sz(rq), min_wqes);
mlx5e_reporter_rx_timeout(rq);
return -ETIMEDOUT;
}
void mlx5e_free_rx_in_progress_descs(struct mlx5e_rq *rq)
{
struct mlx5_wq_ll *wq;
u16 head;
int i;
if (rq->wq_type != MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ)
return;
wq = &rq->mpwqe.wq;
head = wq->head;
/* Outstanding UMR WQEs (in progress) start at wq->head */
for (i = 0; i < rq->mpwqe.umr_in_progress; i++) {
rq->dealloc_wqe(rq, head);
head = mlx5_wq_ll_get_wqe_next_ix(wq, head);
}
rq->mpwqe.actual_wq_head = wq->head;
rq->mpwqe.umr_in_progress = 0;
rq->mpwqe.umr_completed = 0;
}
void mlx5e_free_rx_descs(struct mlx5e_rq *rq)
{
__be16 wqe_ix_be;
u16 wqe_ix;
if (rq->wq_type == MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ) {
struct mlx5_wq_ll *wq = &rq->mpwqe.wq;
mlx5e_free_rx_in_progress_descs(rq);
while (!mlx5_wq_ll_is_empty(wq)) {
struct mlx5e_rx_wqe_ll *wqe;
wqe_ix_be = *wq->tail_next;
wqe_ix = be16_to_cpu(wqe_ix_be);
wqe = mlx5_wq_ll_get_wqe(wq, wqe_ix);
rq->dealloc_wqe(rq, wqe_ix);
mlx5_wq_ll_pop(wq, wqe_ix_be,
&wqe->next.next_wqe_index);
}
} else {
struct mlx5_wq_cyc *wq = &rq->wqe.wq;
while (!mlx5_wq_cyc_is_empty(wq)) {
wqe_ix = mlx5_wq_cyc_get_tail(wq);
rq->dealloc_wqe(rq, wqe_ix);
mlx5_wq_cyc_pop(wq);
}
}
}
int mlx5e_open_rq(struct mlx5e_params *params, struct mlx5e_rq_param *param,
struct mlx5e_xsk_param *xsk, int node,
struct mlx5e_rq *rq)
{
struct mlx5_core_dev *mdev = rq->mdev;
int err;
err = mlx5e_alloc_rq(params, xsk, param, node, rq);
if (err)
return err;
err = mlx5e_create_rq(rq, param);
if (err)
goto err_free_rq;
err = mlx5e_modify_rq_state(rq, MLX5_RQC_STATE_RST, MLX5_RQC_STATE_RDY);
if (err)
goto err_destroy_rq;
if (mlx5e_is_tls_on(rq->priv) && !mlx5e_accel_is_ktls_device(mdev))
__set_bit(MLX5E_RQ_STATE_FPGA_TLS, &rq->state); /* must be FPGA */
if (MLX5_CAP_ETH(mdev, cqe_checksum_full))
__set_bit(MLX5E_RQ_STATE_CSUM_FULL, &rq->state);
if (params->rx_dim_enabled)
__set_bit(MLX5E_RQ_STATE_AM, &rq->state);
/* We disable csum_complete when XDP is enabled since
* XDP programs might manipulate packets which will render
* skb->checksum incorrect.
*/
if (MLX5E_GET_PFLAG(params, MLX5E_PFLAG_RX_NO_CSUM_COMPLETE) || params->xdp_prog)
__set_bit(MLX5E_RQ_STATE_NO_CSUM_COMPLETE, &rq->state);
/* For CQE compression on striding RQ, use stride index provided by
* HW if capability is supported.
*/
if (MLX5E_GET_PFLAG(params, MLX5E_PFLAG_RX_STRIDING_RQ) &&
MLX5_CAP_GEN(mdev, mini_cqe_resp_stride_index))
__set_bit(MLX5E_RQ_STATE_MINI_CQE_HW_STRIDX, &rq->state);
return 0;
err_destroy_rq:
mlx5e_destroy_rq(rq);
err_free_rq:
mlx5e_free_rq(rq);
return err;
}
void mlx5e_activate_rq(struct mlx5e_rq *rq)
{
set_bit(MLX5E_RQ_STATE_ENABLED, &rq->state);
if (rq->icosq) {
mlx5e_trigger_irq(rq->icosq);
} else {
local_bh_disable();
napi_schedule(rq->cq.napi);
local_bh_enable();
}
}
void mlx5e_deactivate_rq(struct mlx5e_rq *rq)
{
clear_bit(MLX5E_RQ_STATE_ENABLED, &rq->state);
synchronize_net(); /* Sync with NAPI to prevent mlx5e_post_rx_wqes. */
}
void mlx5e_close_rq(struct mlx5e_rq *rq)
{
cancel_work_sync(&rq->dim.work);
if (rq->icosq)
cancel_work_sync(&rq->icosq->recover_work);
cancel_work_sync(&rq->recover_work);
mlx5e_destroy_rq(rq);
mlx5e_free_rx_descs(rq);
mlx5e_free_rq(rq);
}
static void mlx5e_free_xdpsq_db(struct mlx5e_xdpsq *sq)
{
kvfree(sq->db.xdpi_fifo.xi);
kvfree(sq->db.wqe_info);
}
static int mlx5e_alloc_xdpsq_fifo(struct mlx5e_xdpsq *sq, int numa)
{
struct mlx5e_xdp_info_fifo *xdpi_fifo = &sq->db.xdpi_fifo;
int wq_sz = mlx5_wq_cyc_get_size(&sq->wq);
int dsegs_per_wq = wq_sz * MLX5_SEND_WQEBB_NUM_DS;
xdpi_fifo->xi = kvzalloc_node(sizeof(*xdpi_fifo->xi) * dsegs_per_wq,
GFP_KERNEL, numa);
if (!xdpi_fifo->xi)
return -ENOMEM;
xdpi_fifo->pc = &sq->xdpi_fifo_pc;
xdpi_fifo->cc = &sq->xdpi_fifo_cc;
xdpi_fifo->mask = dsegs_per_wq - 1;
return 0;
}
static int mlx5e_alloc_xdpsq_db(struct mlx5e_xdpsq *sq, int numa)
{
int wq_sz = mlx5_wq_cyc_get_size(&sq->wq);
int err;
sq->db.wqe_info = kvzalloc_node(sizeof(*sq->db.wqe_info) * wq_sz,
GFP_KERNEL, numa);
if (!sq->db.wqe_info)
return -ENOMEM;
err = mlx5e_alloc_xdpsq_fifo(sq, numa);
if (err) {
mlx5e_free_xdpsq_db(sq);
return err;
}
return 0;
}
static int mlx5e_alloc_xdpsq(struct mlx5e_channel *c,
struct mlx5e_params *params,
struct xsk_buff_pool *xsk_pool,
struct mlx5e_sq_param *param,
struct mlx5e_xdpsq *sq,
bool is_redirect)
{
void *sqc_wq = MLX5_ADDR_OF(sqc, param->sqc, wq);
struct mlx5_core_dev *mdev = c->mdev;
struct mlx5_wq_cyc *wq = &sq->wq;
int err;
sq->pdev = c->pdev;
sq->mkey_be = c->mkey_be;
sq->channel = c;
sq->uar_map = mdev->mlx5e_res.hw_objs.bfreg.map;
sq->min_inline_mode = params->tx_min_inline_mode;
sq->hw_mtu = MLX5E_SW2HW_MTU(params, params->sw_mtu);
sq->xsk_pool = xsk_pool;
sq->stats = sq->xsk_pool ?
&c->priv->channel_stats[c->ix].xsksq :
is_redirect ?
&c->priv->channel_stats[c->ix].xdpsq :
&c->priv->channel_stats[c->ix].rq_xdpsq;
param->wq.db_numa_node = cpu_to_node(c->cpu);
err = mlx5_wq_cyc_create(mdev, &param->wq, sqc_wq, wq, &sq->wq_ctrl);
if (err)
return err;
wq->db = &wq->db[MLX5_SND_DBR];
err = mlx5e_alloc_xdpsq_db(sq, cpu_to_node(c->cpu));
if (err)
goto err_sq_wq_destroy;
return 0;
err_sq_wq_destroy:
mlx5_wq_destroy(&sq->wq_ctrl);
return err;
}
static void mlx5e_free_xdpsq(struct mlx5e_xdpsq *sq)
{
mlx5e_free_xdpsq_db(sq);
mlx5_wq_destroy(&sq->wq_ctrl);
}
static void mlx5e_free_icosq_db(struct mlx5e_icosq *sq)
{
kvfree(sq->db.wqe_info);
}
static int mlx5e_alloc_icosq_db(struct mlx5e_icosq *sq, int numa)
{
int wq_sz = mlx5_wq_cyc_get_size(&sq->wq);
size_t size;
size = array_size(wq_sz, sizeof(*sq->db.wqe_info));
sq->db.wqe_info = kvzalloc_node(size, GFP_KERNEL, numa);
if (!sq->db.wqe_info)
return -ENOMEM;
return 0;
}
static void mlx5e_icosq_err_cqe_work(struct work_struct *recover_work)
{
struct mlx5e_icosq *sq = container_of(recover_work, struct mlx5e_icosq,
recover_work);
mlx5e_reporter_icosq_cqe_err(sq);
}
static int mlx5e_alloc_icosq(struct mlx5e_channel *c,
struct mlx5e_sq_param *param,
struct mlx5e_icosq *sq)
{
void *sqc_wq = MLX5_ADDR_OF(sqc, param->sqc, wq);
struct mlx5_core_dev *mdev = c->mdev;
struct mlx5_wq_cyc *wq = &sq->wq;
int err;
sq->channel = c;
sq->uar_map = mdev->mlx5e_res.hw_objs.bfreg.map;
sq->reserved_room = param->stop_room;
param->wq.db_numa_node = cpu_to_node(c->cpu);
err = mlx5_wq_cyc_create(mdev, &param->wq, sqc_wq, wq, &sq->wq_ctrl);
if (err)
return err;
wq->db = &wq->db[MLX5_SND_DBR];
err = mlx5e_alloc_icosq_db(sq, cpu_to_node(c->cpu));
if (err)
goto err_sq_wq_destroy;
INIT_WORK(&sq->recover_work, mlx5e_icosq_err_cqe_work);
return 0;
err_sq_wq_destroy:
mlx5_wq_destroy(&sq->wq_ctrl);
return err;
}
static void mlx5e_free_icosq(struct mlx5e_icosq *sq)
{
mlx5e_free_icosq_db(sq);
mlx5_wq_destroy(&sq->wq_ctrl);
}
void mlx5e_free_txqsq_db(struct mlx5e_txqsq *sq)
{
kvfree(sq->db.wqe_info);
kvfree(sq->db.skb_fifo.fifo);
kvfree(sq->db.dma_fifo);
}
int mlx5e_alloc_txqsq_db(struct mlx5e_txqsq *sq, int numa)
{
int wq_sz = mlx5_wq_cyc_get_size(&sq->wq);
int df_sz = wq_sz * MLX5_SEND_WQEBB_NUM_DS;
sq->db.dma_fifo = kvzalloc_node(array_size(df_sz,
sizeof(*sq->db.dma_fifo)),
GFP_KERNEL, numa);
sq->db.skb_fifo.fifo = kvzalloc_node(array_size(df_sz,
sizeof(*sq->db.skb_fifo.fifo)),
GFP_KERNEL, numa);
sq->db.wqe_info = kvzalloc_node(array_size(wq_sz,
sizeof(*sq->db.wqe_info)),
GFP_KERNEL, numa);
if (!sq->db.dma_fifo || !sq->db.skb_fifo.fifo || !sq->db.wqe_info) {
mlx5e_free_txqsq_db(sq);
return -ENOMEM;
}
sq->dma_fifo_mask = df_sz - 1;
sq->db.skb_fifo.pc = &sq->skb_fifo_pc;
sq->db.skb_fifo.cc = &sq->skb_fifo_cc;
sq->db.skb_fifo.mask = df_sz - 1;
return 0;
}
static int mlx5e_alloc_txqsq(struct mlx5e_channel *c,
int txq_ix,
struct mlx5e_params *params,
struct mlx5e_sq_param *param,
struct mlx5e_txqsq *sq,
int tc)
{
void *sqc_wq = MLX5_ADDR_OF(sqc, param->sqc, wq);
struct mlx5_core_dev *mdev = c->mdev;
struct mlx5_wq_cyc *wq = &sq->wq;
int err;
sq->pdev = c->pdev;
sq->tstamp = c->tstamp;
sq->clock = &mdev->clock;
sq->mkey_be = c->mkey_be;
sq->netdev = c->netdev;
sq->mdev = c->mdev;
sq->priv = c->priv;
sq->ch_ix = c->ix;
sq->txq_ix = txq_ix;
sq->uar_map = mdev->mlx5e_res.hw_objs.bfreg.map;
sq->min_inline_mode = params->tx_min_inline_mode;
sq->hw_mtu = MLX5E_SW2HW_MTU(params, params->sw_mtu);
INIT_WORK(&sq->recover_work, mlx5e_tx_err_cqe_work);
if (!MLX5_CAP_ETH(mdev, wqe_vlan_insert))
set_bit(MLX5E_SQ_STATE_VLAN_NEED_L2_INLINE, &sq->state);
if (MLX5_IPSEC_DEV(c->priv->mdev))
set_bit(MLX5E_SQ_STATE_IPSEC, &sq->state);
if (param->is_mpw)
set_bit(MLX5E_SQ_STATE_MPWQE, &sq->state);
sq->stop_room = param->stop_room;
sq->ptp_cyc2time = mlx5_sq_ts_translator(mdev);
param->wq.db_numa_node = cpu_to_node(c->cpu);
err = mlx5_wq_cyc_create(mdev, &param->wq, sqc_wq, wq, &sq->wq_ctrl);
if (err)
return err;
wq->db = &wq->db[MLX5_SND_DBR];
err = mlx5e_alloc_txqsq_db(sq, cpu_to_node(c->cpu));
if (err)
goto err_sq_wq_destroy;
INIT_WORK(&sq->dim.work, mlx5e_tx_dim_work);
sq->dim.mode = params->tx_cq_moderation.cq_period_mode;
return 0;
err_sq_wq_destroy:
mlx5_wq_destroy(&sq->wq_ctrl);
return err;
}
void mlx5e_free_txqsq(struct mlx5e_txqsq *sq)
{
mlx5e_free_txqsq_db(sq);
mlx5_wq_destroy(&sq->wq_ctrl);
}
static int mlx5e_create_sq(struct mlx5_core_dev *mdev,
struct mlx5e_sq_param *param,
struct mlx5e_create_sq_param *csp,
u32 *sqn)
{
u8 ts_format;
void *in;
void *sqc;
void *wq;
int inlen;
int err;
inlen = MLX5_ST_SZ_BYTES(create_sq_in) +
sizeof(u64) * csp->wq_ctrl->buf.npages;
in = kvzalloc(inlen, GFP_KERNEL);
if (!in)
return -ENOMEM;
ts_format = mlx5_is_real_time_sq(mdev) ?
MLX5_TIMESTAMP_FORMAT_REAL_TIME :
MLX5_TIMESTAMP_FORMAT_FREE_RUNNING;
sqc = MLX5_ADDR_OF(create_sq_in, in, ctx);
wq = MLX5_ADDR_OF(sqc, sqc, wq);
memcpy(sqc, param->sqc, sizeof(param->sqc));
MLX5_SET(sqc, sqc, tis_lst_sz, csp->tis_lst_sz);
MLX5_SET(sqc, sqc, tis_num_0, csp->tisn);
MLX5_SET(sqc, sqc, cqn, csp->cqn);
MLX5_SET(sqc, sqc, ts_cqe_to_dest_cqn, csp->ts_cqe_to_dest_cqn);
MLX5_SET(sqc, sqc, ts_format, ts_format);
if (MLX5_CAP_ETH(mdev, wqe_inline_mode) == MLX5_CAP_INLINE_MODE_VPORT_CONTEXT)
MLX5_SET(sqc, sqc, min_wqe_inline_mode, csp->min_inline_mode);
MLX5_SET(sqc, sqc, state, MLX5_SQC_STATE_RST);
MLX5_SET(sqc, sqc, flush_in_error_en, 1);
MLX5_SET(wq, wq, wq_type, MLX5_WQ_TYPE_CYCLIC);
MLX5_SET(wq, wq, uar_page, mdev->mlx5e_res.hw_objs.bfreg.index);
MLX5_SET(wq, wq, log_wq_pg_sz, csp->wq_ctrl->buf.page_shift -
MLX5_ADAPTER_PAGE_SHIFT);
MLX5_SET64(wq, wq, dbr_addr, csp->wq_ctrl->db.dma);
mlx5_fill_page_frag_array(&csp->wq_ctrl->buf,
(__be64 *)MLX5_ADDR_OF(wq, wq, pas));
err = mlx5_core_create_sq(mdev, in, inlen, sqn);
kvfree(in);
return err;
}
int mlx5e_modify_sq(struct mlx5_core_dev *mdev, u32 sqn,
struct mlx5e_modify_sq_param *p)
{
u64 bitmask = 0;
void *in;
void *sqc;
int inlen;
int err;
inlen = MLX5_ST_SZ_BYTES(modify_sq_in);
in = kvzalloc(inlen, GFP_KERNEL);
if (!in)
return -ENOMEM;
sqc = MLX5_ADDR_OF(modify_sq_in, in, ctx);
MLX5_SET(modify_sq_in, in, sq_state, p->curr_state);
MLX5_SET(sqc, sqc, state, p->next_state);
if (p->rl_update && p->next_state == MLX5_SQC_STATE_RDY) {
bitmask |= 1;
MLX5_SET(sqc, sqc, packet_pacing_rate_limit_index, p->rl_index);
}
if (p->qos_update && p->next_state == MLX5_SQC_STATE_RDY) {
bitmask |= 1 << 2;
MLX5_SET(sqc, sqc, qos_queue_group_id, p->qos_queue_group_id);
}
MLX5_SET64(modify_sq_in, in, modify_bitmask, bitmask);
err = mlx5_core_modify_sq(mdev, sqn, in);
kvfree(in);
return err;
}
static void mlx5e_destroy_sq(struct mlx5_core_dev *mdev, u32 sqn)
{
mlx5_core_destroy_sq(mdev, sqn);
}
int mlx5e_create_sq_rdy(struct mlx5_core_dev *mdev,
struct mlx5e_sq_param *param,
struct mlx5e_create_sq_param *csp,
u16 qos_queue_group_id,
u32 *sqn)
{
struct mlx5e_modify_sq_param msp = {0};
int err;
err = mlx5e_create_sq(mdev, param, csp, sqn);
if (err)
return err;
msp.curr_state = MLX5_SQC_STATE_RST;
msp.next_state = MLX5_SQC_STATE_RDY;
if (qos_queue_group_id) {
msp.qos_update = true;
msp.qos_queue_group_id = qos_queue_group_id;
}
err = mlx5e_modify_sq(mdev, *sqn, &msp);
if (err)
mlx5e_destroy_sq(mdev, *sqn);
return err;
}
static int mlx5e_set_sq_maxrate(struct net_device *dev,
struct mlx5e_txqsq *sq, u32 rate);
int mlx5e_open_txqsq(struct mlx5e_channel *c, u32 tisn, int txq_ix,
struct mlx5e_params *params, struct mlx5e_sq_param *param,
struct mlx5e_txqsq *sq, int tc, u16 qos_queue_group_id, u16 qos_qid)
{
struct mlx5e_create_sq_param csp = {};
u32 tx_rate;
int err;
err = mlx5e_alloc_txqsq(c, txq_ix, params, param, sq, tc);
if (err)
return err;
if (qos_queue_group_id)
sq->stats = c->priv->htb.qos_sq_stats[qos_qid];
else
sq->stats = &c->priv->channel_stats[c->ix].sq[tc];
csp.tisn = tisn;
csp.tis_lst_sz = 1;
csp.cqn = sq->cq.mcq.cqn;
csp.wq_ctrl = &sq->wq_ctrl;
csp.min_inline_mode = sq->min_inline_mode;
err = mlx5e_create_sq_rdy(c->mdev, param, &csp, qos_queue_group_id, &sq->sqn);
if (err)
goto err_free_txqsq;
tx_rate = c->priv->tx_rates[sq->txq_ix];
if (tx_rate)
mlx5e_set_sq_maxrate(c->netdev, sq, tx_rate);
if (params->tx_dim_enabled)
sq->state |= BIT(MLX5E_SQ_STATE_AM);
return 0;
err_free_txqsq:
mlx5e_free_txqsq(sq);
return err;
}
void mlx5e_activate_txqsq(struct mlx5e_txqsq *sq)
{
sq->txq = netdev_get_tx_queue(sq->netdev, sq->txq_ix);
set_bit(MLX5E_SQ_STATE_ENABLED, &sq->state);
netdev_tx_reset_queue(sq->txq);
netif_tx_start_queue(sq->txq);
}
void mlx5e_tx_disable_queue(struct netdev_queue *txq)
{
__netif_tx_lock_bh(txq);
netif_tx_stop_queue(txq);
__netif_tx_unlock_bh(txq);
}
void mlx5e_deactivate_txqsq(struct mlx5e_txqsq *sq)
{
struct mlx5_wq_cyc *wq = &sq->wq;
clear_bit(MLX5E_SQ_STATE_ENABLED, &sq->state);
synchronize_net(); /* Sync with NAPI to prevent netif_tx_wake_queue. */
mlx5e_tx_disable_queue(sq->txq);
/* last doorbell out, godspeed .. */
if (mlx5e_wqc_has_room_for(wq, sq->cc, sq->pc, 1)) {
u16 pi = mlx5_wq_cyc_ctr2ix(wq, sq->pc);
struct mlx5e_tx_wqe *nop;
sq->db.wqe_info[pi] = (struct mlx5e_tx_wqe_info) {
.num_wqebbs = 1,
};
nop = mlx5e_post_nop(wq, sq->sqn, &sq->pc);
mlx5e_notify_hw(wq, sq->pc, sq->uar_map, &nop->ctrl);
}
}
void mlx5e_close_txqsq(struct mlx5e_txqsq *sq)
{
struct mlx5_core_dev *mdev = sq->mdev;
struct mlx5_rate_limit rl = {0};
cancel_work_sync(&sq->dim.work);
cancel_work_sync(&sq->recover_work);
mlx5e_destroy_sq(mdev, sq->sqn);
if (sq->rate_limit) {
rl.rate = sq->rate_limit;
mlx5_rl_remove_rate(mdev, &rl);
}
mlx5e_free_txqsq_descs(sq);
mlx5e_free_txqsq(sq);
}
void mlx5e_tx_err_cqe_work(struct work_struct *recover_work)
{
struct mlx5e_txqsq *sq = container_of(recover_work, struct mlx5e_txqsq,
recover_work);
mlx5e_reporter_tx_err_cqe(sq);
}
int mlx5e_open_icosq(struct mlx5e_channel *c, struct mlx5e_params *params,
struct mlx5e_sq_param *param, struct mlx5e_icosq *sq)
{
struct mlx5e_create_sq_param csp = {};
int err;
err = mlx5e_alloc_icosq(c, param, sq);
if (err)
return err;
csp.cqn = sq->cq.mcq.cqn;
csp.wq_ctrl = &sq->wq_ctrl;
csp.min_inline_mode = params->tx_min_inline_mode;
err = mlx5e_create_sq_rdy(c->mdev, param, &csp, 0, &sq->sqn);
if (err)
goto err_free_icosq;
if (param->is_tls) {
sq->ktls_resync = mlx5e_ktls_rx_resync_create_resp_list();
if (IS_ERR(sq->ktls_resync)) {
err = PTR_ERR(sq->ktls_resync);
goto err_destroy_icosq;
}
}
return 0;
err_destroy_icosq:
mlx5e_destroy_sq(c->mdev, sq->sqn);
err_free_icosq:
mlx5e_free_icosq(sq);
return err;
}
void mlx5e_activate_icosq(struct mlx5e_icosq *icosq)
{
set_bit(MLX5E_SQ_STATE_ENABLED, &icosq->state);
}
void mlx5e_deactivate_icosq(struct mlx5e_icosq *icosq)
{
clear_bit(MLX5E_SQ_STATE_ENABLED, &icosq->state);
synchronize_net(); /* Sync with NAPI. */
}
void mlx5e_close_icosq(struct mlx5e_icosq *sq)
{
struct mlx5e_channel *c = sq->channel;
if (sq->ktls_resync)
mlx5e_ktls_rx_resync_destroy_resp_list(sq->ktls_resync);
mlx5e_destroy_sq(c->mdev, sq->sqn);
mlx5e_free_icosq_descs(sq);
mlx5e_free_icosq(sq);
}
int mlx5e_open_xdpsq(struct mlx5e_channel *c, struct mlx5e_params *params,
struct mlx5e_sq_param *param, struct xsk_buff_pool *xsk_pool,
struct mlx5e_xdpsq *sq, bool is_redirect)
{
struct mlx5e_create_sq_param csp = {};
int err;
err = mlx5e_alloc_xdpsq(c, params, xsk_pool, param, sq, is_redirect);
if (err)
return err;
csp.tis_lst_sz = 1;
csp.tisn = c->priv->tisn[c->lag_port][0]; /* tc = 0 */
csp.cqn = sq->cq.mcq.cqn;
csp.wq_ctrl = &sq->wq_ctrl;
csp.min_inline_mode = sq->min_inline_mode;
set_bit(MLX5E_SQ_STATE_ENABLED, &sq->state);
err = mlx5e_create_sq_rdy(c->mdev, param, &csp, 0, &sq->sqn);
if (err)
goto err_free_xdpsq;
mlx5e_set_xmit_fp(sq, param->is_mpw);
if (!param->is_mpw) {
unsigned int ds_cnt = MLX5E_XDP_TX_DS_COUNT;
unsigned int inline_hdr_sz = 0;
int i;
if (sq->min_inline_mode != MLX5_INLINE_MODE_NONE) {
inline_hdr_sz = MLX5E_XDP_MIN_INLINE;
ds_cnt++;
}
/* Pre initialize fixed WQE fields */
for (i = 0; i < mlx5_wq_cyc_get_size(&sq->wq); i++) {
struct mlx5e_tx_wqe *wqe = mlx5_wq_cyc_get_wqe(&sq->wq, i);
struct mlx5_wqe_ctrl_seg *cseg = &wqe->ctrl;
struct mlx5_wqe_eth_seg *eseg = &wqe->eth;
struct mlx5_wqe_data_seg *dseg;
sq->db.wqe_info[i] = (struct mlx5e_xdp_wqe_info) {
.num_wqebbs = 1,
.num_pkts = 1,
};
cseg->qpn_ds = cpu_to_be32((sq->sqn << 8) | ds_cnt);
eseg->inline_hdr.sz = cpu_to_be16(inline_hdr_sz);
dseg = (struct mlx5_wqe_data_seg *)cseg + (ds_cnt - 1);
dseg->lkey = sq->mkey_be;
}
}
return 0;
err_free_xdpsq:
clear_bit(MLX5E_SQ_STATE_ENABLED, &sq->state);
mlx5e_free_xdpsq(sq);
return err;
}
void mlx5e_close_xdpsq(struct mlx5e_xdpsq *sq)
{
struct mlx5e_channel *c = sq->channel;
clear_bit(MLX5E_SQ_STATE_ENABLED, &sq->state);
synchronize_net(); /* Sync with NAPI. */
mlx5e_destroy_sq(c->mdev, sq->sqn);
mlx5e_free_xdpsq_descs(sq);
mlx5e_free_xdpsq(sq);
}
static int mlx5e_alloc_cq_common(struct mlx5e_priv *priv,
struct mlx5e_cq_param *param,
struct mlx5e_cq *cq)
{
struct mlx5_core_dev *mdev = priv->mdev;
struct mlx5_core_cq *mcq = &cq->mcq;
int err;
u32 i;
err = mlx5_cqwq_create(mdev, &param->wq, param->cqc, &cq->wq,
&cq->wq_ctrl);
if (err)
return err;
mcq->cqe_sz = 64;
mcq->set_ci_db = cq->wq_ctrl.db.db;
mcq->arm_db = cq->wq_ctrl.db.db + 1;
*mcq->set_ci_db = 0;
*mcq->arm_db = 0;
mcq->vector = param->eq_ix;
mcq->comp = mlx5e_completion_event;
mcq->event = mlx5e_cq_error_event;
for (i = 0; i < mlx5_cqwq_get_size(&cq->wq); i++) {
struct mlx5_cqe64 *cqe = mlx5_cqwq_get_wqe(&cq->wq, i);
cqe->op_own = 0xf1;
}
cq->mdev = mdev;
cq->netdev = priv->netdev;
cq->priv = priv;
return 0;
}
static int mlx5e_alloc_cq(struct mlx5e_priv *priv,
struct mlx5e_cq_param *param,
struct mlx5e_create_cq_param *ccp,
struct mlx5e_cq *cq)
{
int err;
param->wq.buf_numa_node = ccp->node;
param->wq.db_numa_node = ccp->node;
param->eq_ix = ccp->ix;
err = mlx5e_alloc_cq_common(priv, param, cq);
cq->napi = ccp->napi;
cq->ch_stats = ccp->ch_stats;
return err;
}
static void mlx5e_free_cq(struct mlx5e_cq *cq)
{
mlx5_wq_destroy(&cq->wq_ctrl);
}
static int mlx5e_create_cq(struct mlx5e_cq *cq, struct mlx5e_cq_param *param)
{
u32 out[MLX5_ST_SZ_DW(create_cq_out)];
struct mlx5_core_dev *mdev = cq->mdev;
struct mlx5_core_cq *mcq = &cq->mcq;
void *in;
void *cqc;
int inlen;
int eqn;
int err;
err = mlx5_vector2eqn(mdev, param->eq_ix, &eqn);
if (err)
return err;
inlen = MLX5_ST_SZ_BYTES(create_cq_in) +
sizeof(u64) * cq->wq_ctrl.buf.npages;
in = kvzalloc(inlen, GFP_KERNEL);
if (!in)
return -ENOMEM;
cqc = MLX5_ADDR_OF(create_cq_in, in, cq_context);
memcpy(cqc, param->cqc, sizeof(param->cqc));
mlx5_fill_page_frag_array(&cq->wq_ctrl.buf,
(__be64 *)MLX5_ADDR_OF(create_cq_in, in, pas));
MLX5_SET(cqc, cqc, cq_period_mode, param->cq_period_mode);
MLX5_SET(cqc, cqc, c_eqn_or_apu_element, eqn);
MLX5_SET(cqc, cqc, uar_page, mdev->priv.uar->index);
MLX5_SET(cqc, cqc, log_page_size, cq->wq_ctrl.buf.page_shift -
MLX5_ADAPTER_PAGE_SHIFT);
MLX5_SET64(cqc, cqc, dbr_addr, cq->wq_ctrl.db.dma);
err = mlx5_core_create_cq(mdev, mcq, in, inlen, out, sizeof(out));
kvfree(in);
if (err)
return err;
mlx5e_cq_arm(cq);
return 0;
}
static void mlx5e_destroy_cq(struct mlx5e_cq *cq)
{
mlx5_core_destroy_cq(cq->mdev, &cq->mcq);
}
int mlx5e_open_cq(struct mlx5e_priv *priv, struct dim_cq_moder moder,
struct mlx5e_cq_param *param, struct mlx5e_create_cq_param *ccp,
struct mlx5e_cq *cq)
{
struct mlx5_core_dev *mdev = priv->mdev;
int err;
err = mlx5e_alloc_cq(priv, param, ccp, cq);
if (err)
return err;
err = mlx5e_create_cq(cq, param);
if (err)
goto err_free_cq;
if (MLX5_CAP_GEN(mdev, cq_moderation))
mlx5_core_modify_cq_moderation(mdev, &cq->mcq, moder.usec, moder.pkts);
return 0;
err_free_cq:
mlx5e_free_cq(cq);
return err;
}
void mlx5e_close_cq(struct mlx5e_cq *cq)
{
mlx5e_destroy_cq(cq);
mlx5e_free_cq(cq);
}
static int mlx5e_open_tx_cqs(struct mlx5e_channel *c,
struct mlx5e_params *params,
struct mlx5e_create_cq_param *ccp,
struct mlx5e_channel_param *cparam)
{
int err;
int tc;
for (tc = 0; tc < c->num_tc; tc++) {
err = mlx5e_open_cq(c->priv, params->tx_cq_moderation, &cparam->txq_sq.cqp,
ccp, &c->sq[tc].cq);
if (err)
goto err_close_tx_cqs;
}
return 0;
err_close_tx_cqs:
for (tc--; tc >= 0; tc--)
mlx5e_close_cq(&c->sq[tc].cq);
return err;
}
static void mlx5e_close_tx_cqs(struct mlx5e_channel *c)
{
int tc;
for (tc = 0; tc < c->num_tc; tc++)
mlx5e_close_cq(&c->sq[tc].cq);
}
static int mlx5e_open_sqs(struct mlx5e_channel *c,
struct mlx5e_params *params,
struct mlx5e_channel_param *cparam)
{
int err, tc;
for (tc = 0; tc < mlx5e_get_dcb_num_tc(params); tc++) {
int txq_ix = c->ix + tc * params->num_channels;
err = mlx5e_open_txqsq(c, c->priv->tisn[c->lag_port][tc], txq_ix,
params, &cparam->txq_sq, &c->sq[tc], tc, 0, 0);
if (err)
goto err_close_sqs;
}
return 0;
err_close_sqs:
for (tc--; tc >= 0; tc--)
mlx5e_close_txqsq(&c->sq[tc]);
return err;
}
static void mlx5e_close_sqs(struct mlx5e_channel *c)
{
int tc;
for (tc = 0; tc < c->num_tc; tc++)
mlx5e_close_txqsq(&c->sq[tc]);
}
static int mlx5e_set_sq_maxrate(struct net_device *dev,
struct mlx5e_txqsq *sq, u32 rate)
{
struct mlx5e_priv *priv = netdev_priv(dev);
struct mlx5_core_dev *mdev = priv->mdev;
struct mlx5e_modify_sq_param msp = {0};
struct mlx5_rate_limit rl = {0};
u16 rl_index = 0;
int err;
if (rate == sq->rate_limit)
/* nothing to do */
return 0;
if (sq->rate_limit) {
rl.rate = sq->rate_limit;
/* remove current rl index to free space to next ones */
mlx5_rl_remove_rate(mdev, &rl);
}
sq->rate_limit = 0;
if (rate) {
rl.rate = rate;
err = mlx5_rl_add_rate(mdev, &rl_index, &rl);
if (err) {
netdev_err(dev, "Failed configuring rate %u: %d\n",
rate, err);
return err;
}
}
msp.curr_state = MLX5_SQC_STATE_RDY;
msp.next_state = MLX5_SQC_STATE_RDY;
msp.rl_index = rl_index;
msp.rl_update = true;
err = mlx5e_modify_sq(mdev, sq->sqn, &msp);
if (err) {
netdev_err(dev, "Failed configuring rate %u: %d\n",
rate, err);
/* remove the rate from the table */
if (rate)
mlx5_rl_remove_rate(mdev, &rl);
return err;
}
sq->rate_limit = rate;
return 0;
}
static int mlx5e_set_tx_maxrate(struct net_device *dev, int index, u32 rate)
{
struct mlx5e_priv *priv = netdev_priv(dev);
struct mlx5_core_dev *mdev = priv->mdev;
struct mlx5e_txqsq *sq = priv->txq2sq[index];
int err = 0;
if (!mlx5_rl_is_supported(mdev)) {
netdev_err(dev, "Rate limiting is not supported on this device\n");
return -EINVAL;
}
/* rate is given in Mb/sec, HW config is in Kb/sec */
rate = rate << 10;
/* Check whether rate in valid range, 0 is always valid */
if (rate && !mlx5_rl_is_in_range(mdev, rate)) {
netdev_err(dev, "TX rate %u, is not in range\n", rate);
return -ERANGE;
}
mutex_lock(&priv->state_lock);
if (test_bit(MLX5E_STATE_OPENED, &priv->state))
err = mlx5e_set_sq_maxrate(dev, sq, rate);
if (!err)
priv->tx_rates[index] = rate;
mutex_unlock(&priv->state_lock);
return err;
}
static int mlx5e_open_rxq_rq(struct mlx5e_channel *c, struct mlx5e_params *params,
struct mlx5e_rq_param *rq_params)
{
int err;
err = mlx5e_init_rxq_rq(c, params, &c->rq);
if (err)
return err;
return mlx5e_open_rq(params, rq_params, NULL, cpu_to_node(c->cpu), &c->rq);
}
static int mlx5e_open_queues(struct mlx5e_channel *c,
struct mlx5e_params *params,
struct mlx5e_channel_param *cparam)
{
struct dim_cq_moder icocq_moder = {0, 0};
struct mlx5e_create_cq_param ccp;
int err;
mlx5e_build_create_cq_param(&ccp, c);
err = mlx5e_open_cq(c->priv, icocq_moder, &cparam->async_icosq.cqp, &ccp,
&c->async_icosq.cq);
if (err)
return err;
err = mlx5e_open_cq(c->priv, icocq_moder, &cparam->icosq.cqp, &ccp,
&c->icosq.cq);
if (err)
goto err_close_async_icosq_cq;
err = mlx5e_open_tx_cqs(c, params, &ccp, cparam);
if (err)
goto err_close_icosq_cq;
err = mlx5e_open_cq(c->priv, params->tx_cq_moderation, &cparam->xdp_sq.cqp, &ccp,
&c->xdpsq.cq);
if (err)
goto err_close_tx_cqs;
err = mlx5e_open_cq(c->priv, params->rx_cq_moderation, &cparam->rq.cqp, &ccp,
&c->rq.cq);
if (err)
goto err_close_xdp_tx_cqs;
err = c->xdp ? mlx5e_open_cq(c->priv, params->tx_cq_moderation, &cparam->xdp_sq.cqp,
&ccp, &c->rq_xdpsq.cq) : 0;
if (err)
goto err_close_rx_cq;
spin_lock_init(&c->async_icosq_lock);
err = mlx5e_open_icosq(c, params, &cparam->async_icosq, &c->async_icosq);
if (err)
goto err_close_xdpsq_cq;
err = mlx5e_open_icosq(c, params, &cparam->icosq, &c->icosq);
if (err)
goto err_close_async_icosq;
err = mlx5e_open_sqs(c, params, cparam);
if (err)
goto err_close_icosq;
err = mlx5e_open_rxq_rq(c, params, &cparam->rq);
if (err)
goto err_close_sqs;
if (c->xdp) {
err = mlx5e_open_xdpsq(c, params, &cparam->xdp_sq, NULL,
&c->rq_xdpsq, false);
if (err)
goto err_close_rq;
}
err = mlx5e_open_xdpsq(c, params, &cparam->xdp_sq, NULL, &c->xdpsq, true);
if (err)
goto err_close_xdp_sq;
return 0;
err_close_xdp_sq:
if (c->xdp)
mlx5e_close_xdpsq(&c->rq_xdpsq);
err_close_rq:
mlx5e_close_rq(&c->rq);
err_close_sqs:
mlx5e_close_sqs(c);
err_close_icosq:
mlx5e_close_icosq(&c->icosq);
err_close_async_icosq:
mlx5e_close_icosq(&c->async_icosq);
err_close_xdpsq_cq:
if (c->xdp)
mlx5e_close_cq(&c->rq_xdpsq.cq);
err_close_rx_cq:
mlx5e_close_cq(&c->rq.cq);
err_close_xdp_tx_cqs:
mlx5e_close_cq(&c->xdpsq.cq);
err_close_tx_cqs:
mlx5e_close_tx_cqs(c);
err_close_icosq_cq:
mlx5e_close_cq(&c->icosq.cq);
err_close_async_icosq_cq:
mlx5e_close_cq(&c->async_icosq.cq);
return err;
}
static void mlx5e_close_queues(struct mlx5e_channel *c)
{
mlx5e_close_xdpsq(&c->xdpsq);
if (c->xdp)
mlx5e_close_xdpsq(&c->rq_xdpsq);
mlx5e_close_rq(&c->rq);
mlx5e_close_sqs(c);
mlx5e_close_icosq(&c->icosq);
mlx5e_close_icosq(&c->async_icosq);
if (c->xdp)
mlx5e_close_cq(&c->rq_xdpsq.cq);
mlx5e_close_cq(&c->rq.cq);
mlx5e_close_cq(&c->xdpsq.cq);
mlx5e_close_tx_cqs(c);
mlx5e_close_cq(&c->icosq.cq);
mlx5e_close_cq(&c->async_icosq.cq);
}
static u8 mlx5e_enumerate_lag_port(struct mlx5_core_dev *mdev, int ix)
{
u16 port_aff_bias = mlx5_core_is_pf(mdev) ? 0 : MLX5_CAP_GEN(mdev, vhca_id);
return (ix + port_aff_bias) % mlx5e_get_num_lag_ports(mdev);
}
static int mlx5e_open_channel(struct mlx5e_priv *priv, int ix,
struct mlx5e_params *params,
struct mlx5e_channel_param *cparam,
struct xsk_buff_pool *xsk_pool,
struct mlx5e_channel **cp)
{
int cpu = cpumask_first(mlx5_comp_irq_get_affinity_mask(priv->mdev, ix));
struct net_device *netdev = priv->netdev;
struct mlx5e_xsk_param xsk;
struct mlx5e_channel *c;
unsigned int irq;
int err;
err = mlx5_vector2irqn(priv->mdev, ix, &irq);
if (err)
return err;
c = kvzalloc_node(sizeof(*c), GFP_KERNEL, cpu_to_node(cpu));
if (!c)
return -ENOMEM;
c->priv = priv;
c->mdev = priv->mdev;
c->tstamp = &priv->tstamp;
c->ix = ix;
c->cpu = cpu;
c->pdev = mlx5_core_dma_dev(priv->mdev);
c->netdev = priv->netdev;
c->mkey_be = cpu_to_be32(priv->mdev->mlx5e_res.hw_objs.mkey.key);
c->num_tc = mlx5e_get_dcb_num_tc(params);
c->xdp = !!params->xdp_prog;
c->stats = &priv->channel_stats[ix].ch;
c->aff_mask = irq_get_effective_affinity_mask(irq);
c->lag_port = mlx5e_enumerate_lag_port(priv->mdev, ix);
netif_napi_add(netdev, &c->napi, mlx5e_napi_poll, 64);
err = mlx5e_open_queues(c, params, cparam);
if (unlikely(err))
goto err_napi_del;
if (xsk_pool) {
mlx5e_build_xsk_param(xsk_pool, &xsk);
err = mlx5e_open_xsk(priv, params, &xsk, xsk_pool, c);
if (unlikely(err))
goto err_close_queues;
}
*cp = c;
return 0;
err_close_queues:
mlx5e_close_queues(c);
err_napi_del:
netif_napi_del(&c->napi);
kvfree(c);
return err;
}
static void mlx5e_activate_channel(struct mlx5e_channel *c)
{
int tc;
napi_enable(&c->napi);
for (tc = 0; tc < c->num_tc; tc++)
mlx5e_activate_txqsq(&c->sq[tc]);
mlx5e_activate_icosq(&c->icosq);
mlx5e_activate_icosq(&c->async_icosq);
mlx5e_activate_rq(&c->rq);
if (test_bit(MLX5E_CHANNEL_STATE_XSK, c->state))
mlx5e_activate_xsk(c);
}
static void mlx5e_deactivate_channel(struct mlx5e_channel *c)
{
int tc;
if (test_bit(MLX5E_CHANNEL_STATE_XSK, c->state))
mlx5e_deactivate_xsk(c);
mlx5e_deactivate_rq(&c->rq);
mlx5e_deactivate_icosq(&c->async_icosq);
mlx5e_deactivate_icosq(&c->icosq);
for (tc = 0; tc < c->num_tc; tc++)
mlx5e_deactivate_txqsq(&c->sq[tc]);
mlx5e_qos_deactivate_queues(c);
napi_disable(&c->napi);
}
static void mlx5e_close_channel(struct mlx5e_channel *c)
{
if (test_bit(MLX5E_CHANNEL_STATE_XSK, c->state))
mlx5e_close_xsk(c);
mlx5e_close_queues(c);
mlx5e_qos_close_queues(c);
netif_napi_del(&c->napi);
kvfree(c);
}
int mlx5e_open_channels(struct mlx5e_priv *priv,
struct mlx5e_channels *chs)
{
struct mlx5e_channel_param *cparam;
int err = -ENOMEM;
int i;
chs->num = chs->params.num_channels;
chs->c = kcalloc(chs->num, sizeof(struct mlx5e_channel *), GFP_KERNEL);
cparam = kvzalloc(sizeof(struct mlx5e_channel_param), GFP_KERNEL);
if (!chs->c || !cparam)
goto err_free;
err = mlx5e_build_channel_param(priv->mdev, &chs->params, priv->q_counter, cparam);
if (err)
goto err_free;
for (i = 0; i < chs->num; i++) {
struct xsk_buff_pool *xsk_pool = NULL;
if (chs->params.xdp_prog)
xsk_pool = mlx5e_xsk_get_pool(&chs->params, chs->params.xsk, i);
err = mlx5e_open_channel(priv, i, &chs->params, cparam, xsk_pool, &chs->c[i]);
if (err)
goto err_close_channels;
}
if (MLX5E_GET_PFLAG(&chs->params, MLX5E_PFLAG_TX_PORT_TS) || chs->params.ptp_rx) {
err = mlx5e_ptp_open(priv, &chs->params, chs->c[0]->lag_port, &chs->ptp);
if (err)
goto err_close_channels;
}
err = mlx5e_qos_open_queues(priv, chs);
if (err)
goto err_close_ptp;
mlx5e_health_channels_update(priv);
kvfree(cparam);
return 0;
err_close_ptp:
if (chs->ptp)
mlx5e_ptp_close(chs->ptp);
err_close_channels:
for (i--; i >= 0; i--)
mlx5e_close_channel(chs->c[i]);
err_free:
kfree(chs->c);
kvfree(cparam);
chs->num = 0;
return err;
}
static void mlx5e_activate_channels(struct mlx5e_channels *chs)
{
int i;
for (i = 0; i < chs->num; i++)
mlx5e_activate_channel(chs->c[i]);
if (chs->ptp)
mlx5e_ptp_activate_channel(chs->ptp);
}
#define MLX5E_RQ_WQES_TIMEOUT 20000 /* msecs */
static int mlx5e_wait_channels_min_rx_wqes(struct mlx5e_channels *chs)
{
int err = 0;
int i;
for (i = 0; i < chs->num; i++) {
int timeout = err ? 0 : MLX5E_RQ_WQES_TIMEOUT;
err |= mlx5e_wait_for_min_rx_wqes(&chs->c[i]->rq, timeout);
/* Don't wait on the XSK RQ, because the newer xdpsock sample
* doesn't provide any Fill Ring entries at the setup stage.
*/
}
return err ? -ETIMEDOUT : 0;
}
static void mlx5e_deactivate_channels(struct mlx5e_channels *chs)
{
int i;
if (chs->ptp)
mlx5e_ptp_deactivate_channel(chs->ptp);
for (i = 0; i < chs->num; i++)
mlx5e_deactivate_channel(chs->c[i]);
}
void mlx5e_close_channels(struct mlx5e_channels *chs)
{
int i;
if (chs->ptp) {
mlx5e_ptp_close(chs->ptp);
chs->ptp = NULL;
}
for (i = 0; i < chs->num; i++)
mlx5e_close_channel(chs->c[i]);
kfree(chs->c);
chs->num = 0;
}
static int mlx5e_modify_tirs_lro(struct mlx5e_priv *priv)
{
struct mlx5e_rx_res *res = priv->rx_res;
struct mlx5e_lro_param lro_param;
lro_param = mlx5e_get_lro_param(&priv->channels.params);
return mlx5e_rx_res_lro_set_param(res, &lro_param);
}
static MLX5E_DEFINE_PREACTIVATE_WRAPPER_CTX(mlx5e_modify_tirs_lro);
static int mlx5e_set_mtu(struct mlx5_core_dev *mdev,
struct mlx5e_params *params, u16 mtu)
{
u16 hw_mtu = MLX5E_SW2HW_MTU(params, mtu);
int err;
err = mlx5_set_port_mtu(mdev, hw_mtu, 1);
if (err)
return err;
/* Update vport context MTU */
mlx5_modify_nic_vport_mtu(mdev, hw_mtu);
return 0;
}
static void mlx5e_query_mtu(struct mlx5_core_dev *mdev,
struct mlx5e_params *params, u16 *mtu)
{
u16 hw_mtu = 0;
int err;
err = mlx5_query_nic_vport_mtu(mdev, &hw_mtu);
if (err || !hw_mtu) /* fallback to port oper mtu */
mlx5_query_port_oper_mtu(mdev, &hw_mtu, 1);
*mtu = MLX5E_HW2SW_MTU(params, hw_mtu);
}
int mlx5e_set_dev_port_mtu(struct mlx5e_priv *priv)
{
struct mlx5e_params *params = &priv->channels.params;
struct net_device *netdev = priv->netdev;
struct mlx5_core_dev *mdev = priv->mdev;
u16 mtu;
int err;
err = mlx5e_set_mtu(mdev, params, params->sw_mtu);
if (err)
return err;
mlx5e_query_mtu(mdev, params, &mtu);
if (mtu != params->sw_mtu)
netdev_warn(netdev, "%s: VPort MTU %d is different than netdev mtu %d\n",
__func__, mtu, params->sw_mtu);
params->sw_mtu = mtu;
return 0;
}
MLX5E_DEFINE_PREACTIVATE_WRAPPER_CTX(mlx5e_set_dev_port_mtu);
void mlx5e_set_netdev_mtu_boundaries(struct mlx5e_priv *priv)
{
struct mlx5e_params *params = &priv->channels.params;
struct net_device *netdev = priv->netdev;
struct mlx5_core_dev *mdev = priv->mdev;
u16 max_mtu;
/* MTU range: 68 - hw-specific max */
netdev->min_mtu = ETH_MIN_MTU;
mlx5_query_port_max_mtu(mdev, &max_mtu, 1);
netdev->max_mtu = min_t(unsigned int, MLX5E_HW2SW_MTU(params, max_mtu),
ETH_MAX_MTU);
}
static int mlx5e_netdev_set_tcs(struct net_device *netdev, u16 nch, u8 ntc,
struct netdev_tc_txq *tc_to_txq)
{
int tc, err;
netdev_reset_tc(netdev);
if (ntc == 1)
return 0;
err = netdev_set_num_tc(netdev, ntc);
if (err) {
netdev_WARN(netdev, "netdev_set_num_tc failed (%d), ntc = %d\n", err, ntc);
return err;
}
for (tc = 0; tc < ntc; tc++) {
u16 count, offset;
count = tc_to_txq[tc].count;
offset = tc_to_txq[tc].offset;
netdev_set_tc_queue(netdev, tc, count, offset);
}
return 0;
}
int mlx5e_update_tx_netdev_queues(struct mlx5e_priv *priv)
{
int qos_queues, nch, ntc, num_txqs, err;
qos_queues = mlx5e_qos_cur_leaf_nodes(priv);
nch = priv->channels.params.num_channels;
ntc = mlx5e_get_dcb_num_tc(&priv->channels.params);
num_txqs = nch * ntc + qos_queues;
if (MLX5E_GET_PFLAG(&priv->channels.params, MLX5E_PFLAG_TX_PORT_TS))
num_txqs += ntc;
mlx5e_dbg(DRV, priv, "Setting num_txqs %d\n", num_txqs);
err = netif_set_real_num_tx_queues(priv->netdev, num_txqs);
if (err)
netdev_warn(priv->netdev, "netif_set_real_num_tx_queues failed, %d\n", err);
return err;
}
static int mlx5e_update_netdev_queues(struct mlx5e_priv *priv)
{
struct netdev_tc_txq old_tc_to_txq[TC_MAX_QUEUE], *tc_to_txq;
struct net_device *netdev = priv->netdev;
int old_num_txqs, old_ntc;
int num_rxqs, nch, ntc;
int err;
int i;
old_num_txqs = netdev->real_num_tx_queues;
old_ntc = netdev->num_tc ? : 1;
for (i = 0; i < ARRAY_SIZE(old_tc_to_txq); i++)
old_tc_to_txq[i] = netdev->tc_to_txq[i];
nch = priv->channels.params.num_channels;
ntc = priv->channels.params.mqprio.num_tc;
num_rxqs = nch * priv->profile->rq_groups;
tc_to_txq = priv->channels.params.mqprio.tc_to_txq;
err = mlx5e_netdev_set_tcs(netdev, nch, ntc, tc_to_txq);
if (err)
goto err_out;
err = mlx5e_update_tx_netdev_queues(priv);
if (err)
goto err_tcs;
err = netif_set_real_num_rx_queues(netdev, num_rxqs);
if (err) {
netdev_warn(netdev, "netif_set_real_num_rx_queues failed, %d\n", err);
goto err_txqs;
}
return 0;
err_txqs:
/* netif_set_real_num_rx_queues could fail only when nch increased. Only
* one of nch and ntc is changed in this function. That means, the call
* to netif_set_real_num_tx_queues below should not fail, because it
* decreases the number of TX queues.
*/
WARN_ON_ONCE(netif_set_real_num_tx_queues(netdev, old_num_txqs));
err_tcs:
WARN_ON_ONCE(mlx5e_netdev_set_tcs(netdev, old_num_txqs / old_ntc, old_ntc,
old_tc_to_txq));
err_out:
return err;
}
static MLX5E_DEFINE_PREACTIVATE_WRAPPER_CTX(mlx5e_update_netdev_queues);
static void mlx5e_set_default_xps_cpumasks(struct mlx5e_priv *priv,
struct mlx5e_params *params)
{
struct mlx5_core_dev *mdev = priv->mdev;
int num_comp_vectors, ix, irq;
num_comp_vectors = mlx5_comp_vectors_count(mdev);
for (ix = 0; ix < params->num_channels; ix++) {
cpumask_clear(priv->scratchpad.cpumask);
for (irq = ix; irq < num_comp_vectors; irq += params->num_channels) {
int cpu = cpumask_first(mlx5_comp_irq_get_affinity_mask(mdev, irq));
cpumask_set_cpu(cpu, priv->scratchpad.cpumask);
}
netif_set_xps_queue(priv->netdev, priv->scratchpad.cpumask, ix);
}
}
int mlx5e_num_channels_changed(struct mlx5e_priv *priv)
{
u16 count = priv->channels.params.num_channels;
int err;
err = mlx5e_update_netdev_queues(priv);
if (err)
return err;
mlx5e_set_default_xps_cpumasks(priv, &priv->channels.params);
/* This function may be called on attach, before priv->rx_res is created. */
if (!netif_is_rxfh_configured(priv->netdev) && priv->rx_res)
mlx5e_rx_res_rss_set_indir_uniform(priv->rx_res, count);
return 0;
}
MLX5E_DEFINE_PREACTIVATE_WRAPPER_CTX(mlx5e_num_channels_changed);
static void mlx5e_build_txq_maps(struct mlx5e_priv *priv)
{
int i, ch, tc, num_tc;
ch = priv->channels.num;
num_tc = mlx5e_get_dcb_num_tc(&priv->channels.params);
for (i = 0; i < ch; i++) {
for (tc = 0; tc < num_tc; tc++) {
struct mlx5e_channel *c = priv->channels.c[i];
struct mlx5e_txqsq *sq = &c->sq[tc];
priv->txq2sq[sq->txq_ix] = sq;
priv->channel_tc2realtxq[i][tc] = i + tc * ch;
}
}
if (!priv->channels.ptp)
return;
if (!test_bit(MLX5E_PTP_STATE_TX, priv->channels.ptp->state))
return;
for (tc = 0; tc < num_tc; tc++) {
struct mlx5e_ptp *c = priv->channels.ptp;
struct mlx5e_txqsq *sq = &c->ptpsq[tc].txqsq;
priv->txq2sq[sq->txq_ix] = sq;
priv->port_ptp_tc2realtxq[tc] = priv->num_tc_x_num_ch + tc;
}
}
static void mlx5e_update_num_tc_x_num_ch(struct mlx5e_priv *priv)
{
/* Sync with mlx5e_select_queue. */
WRITE_ONCE(priv->num_tc_x_num_ch,
mlx5e_get_dcb_num_tc(&priv->channels.params) * priv->channels.num);
}
void mlx5e_activate_priv_channels(struct mlx5e_priv *priv)
{
mlx5e_update_num_tc_x_num_ch(priv);
mlx5e_build_txq_maps(priv);
mlx5e_activate_channels(&priv->channels);
mlx5e_qos_activate_queues(priv);
mlx5e_xdp_tx_enable(priv);
netif_tx_start_all_queues(priv->netdev);
if (mlx5e_is_vport_rep(priv))
mlx5e_add_sqs_fwd_rules(priv);
mlx5e_wait_channels_min_rx_wqes(&priv->channels);
if (priv->rx_res)
mlx5e_rx_res_channels_activate(priv->rx_res, &priv->channels);
}
void mlx5e_deactivate_priv_channels(struct mlx5e_priv *priv)
{
if (priv->rx_res)
mlx5e_rx_res_channels_deactivate(priv->rx_res);
if (mlx5e_is_vport_rep(priv))
mlx5e_remove_sqs_fwd_rules(priv);
/* FIXME: This is a W/A only for tx timeout watch dog false alarm when
* polling for inactive tx queues.
*/
netif_tx_stop_all_queues(priv->netdev);
netif_tx_disable(priv->netdev);
mlx5e_xdp_tx_disable(priv);
mlx5e_deactivate_channels(&priv->channels);
}
static int mlx5e_switch_priv_params(struct mlx5e_priv *priv,
struct mlx5e_params *new_params,
mlx5e_fp_preactivate preactivate,
void *context)
{
struct mlx5e_params old_params;
old_params = priv->channels.params;
priv->channels.params = *new_params;
if (preactivate) {
int err;
err = preactivate(priv, context);
if (err) {
priv->channels.params = old_params;
return err;
}
}
return 0;
}
static int mlx5e_switch_priv_channels(struct mlx5e_priv *priv,
struct mlx5e_channels *new_chs,
mlx5e_fp_preactivate preactivate,
void *context)
{
struct net_device *netdev = priv->netdev;
struct mlx5e_channels old_chs;
int carrier_ok;
int err = 0;
carrier_ok = netif_carrier_ok(netdev);
netif_carrier_off(netdev);
mlx5e_deactivate_priv_channels(priv);
old_chs = priv->channels;
priv->channels = *new_chs;
/* New channels are ready to roll, call the preactivate hook if needed
* to modify HW settings or update kernel parameters.
*/
if (preactivate) {
err = preactivate(priv, context);
if (err) {
priv->channels = old_chs;
goto out;
}
}
mlx5e_close_channels(&old_chs);
priv->profile->update_rx(priv);
out:
mlx5e_activate_priv_channels(priv);
/* return carrier back if needed */
if (carrier_ok)
netif_carrier_on(netdev);
return err;
}
int mlx5e_safe_switch_params(struct mlx5e_priv *priv,
struct mlx5e_params *params,
mlx5e_fp_preactivate preactivate,
void *context, bool reset)
{
struct mlx5e_channels new_chs = {};
int err;
reset &= test_bit(MLX5E_STATE_OPENED, &priv->state);
if (!reset)
return mlx5e_switch_priv_params(priv, params, preactivate, context);
new_chs.params = *params;
err = mlx5e_open_channels(priv, &new_chs);
if (err)
return err;
err = mlx5e_switch_priv_channels(priv, &new_chs, preactivate, context);
if (err)
mlx5e_close_channels(&new_chs);
return err;
}
int mlx5e_safe_reopen_channels(struct mlx5e_priv *priv)
{
return mlx5e_safe_switch_params(priv, &priv->channels.params, NULL, NULL, true);
}
void mlx5e_timestamp_init(struct mlx5e_priv *priv)
{
priv->tstamp.tx_type = HWTSTAMP_TX_OFF;
priv->tstamp.rx_filter = HWTSTAMP_FILTER_NONE;
}
static void mlx5e_modify_admin_state(struct mlx5_core_dev *mdev,
enum mlx5_port_status state)
{
struct mlx5_eswitch *esw = mdev->priv.eswitch;
int vport_admin_state;
mlx5_set_port_admin_status(mdev, state);
if (mlx5_eswitch_mode(mdev) == MLX5_ESWITCH_OFFLOADS ||
!MLX5_CAP_GEN(mdev, uplink_follow))
return;
if (state == MLX5_PORT_UP)
vport_admin_state = MLX5_VPORT_ADMIN_STATE_AUTO;
else
vport_admin_state = MLX5_VPORT_ADMIN_STATE_DOWN;
mlx5_eswitch_set_vport_state(esw, MLX5_VPORT_UPLINK, vport_admin_state);
}
int mlx5e_open_locked(struct net_device *netdev)
{
struct mlx5e_priv *priv = netdev_priv(netdev);
int err;
set_bit(MLX5E_STATE_OPENED, &priv->state);
err = mlx5e_open_channels(priv, &priv->channels);
if (err)
goto err_clear_state_opened_flag;
priv->profile->update_rx(priv);
mlx5e_activate_priv_channels(priv);
mlx5e_apply_traps(priv, true);
if (priv->profile->update_carrier)
priv->profile->update_carrier(priv);
mlx5e_queue_update_stats(priv);
return 0;
err_clear_state_opened_flag:
clear_bit(MLX5E_STATE_OPENED, &priv->state);
return err;
}
int mlx5e_open(struct net_device *netdev)
{
struct mlx5e_priv *priv = netdev_priv(netdev);
int err;
mutex_lock(&priv->state_lock);
err = mlx5e_open_locked(netdev);
if (!err)
mlx5e_modify_admin_state(priv->mdev, MLX5_PORT_UP);
mutex_unlock(&priv->state_lock);
return err;
}
int mlx5e_close_locked(struct net_device *netdev)
{
struct mlx5e_priv *priv = netdev_priv(netdev);
/* May already be CLOSED in case a previous configuration operation
* (e.g RX/TX queue size change) that involves close&open failed.
*/
if (!test_bit(MLX5E_STATE_OPENED, &priv->state))
return 0;
mlx5e_apply_traps(priv, false);
clear_bit(MLX5E_STATE_OPENED, &priv->state);
netif_carrier_off(priv->netdev);
mlx5e_deactivate_priv_channels(priv);
mlx5e_close_channels(&priv->channels);
return 0;
}
int mlx5e_close(struct net_device *netdev)
{
struct mlx5e_priv *priv = netdev_priv(netdev);
int err;
if (!netif_device_present(netdev))
return -ENODEV;
mutex_lock(&priv->state_lock);
mlx5e_modify_admin_state(priv->mdev, MLX5_PORT_DOWN);
err = mlx5e_close_locked(netdev);
mutex_unlock(&priv->state_lock);
return err;
}
static void mlx5e_free_drop_rq(struct mlx5e_rq *rq)
{
mlx5_wq_destroy(&rq->wq_ctrl);
}
static int mlx5e_alloc_drop_rq(struct mlx5_core_dev *mdev,
struct mlx5e_rq *rq,
struct mlx5e_rq_param *param)
{
void *rqc = param->rqc;
void *rqc_wq = MLX5_ADDR_OF(rqc, rqc, wq);
int err;
param->wq.db_numa_node = param->wq.buf_numa_node;