Contributors: 18
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Maxim Mikityanskiy |
528 |
43.14% |
11 |
22.00% |
| Amir Vadai |
239 |
19.53% |
1 |
2.00% |
| Tariq Toukan |
201 |
16.42% |
16 |
32.00% |
| Tal Gilboa |
94 |
7.68% |
2 |
4.00% |
| Andy Gospodarek |
36 |
2.94% |
2 |
4.00% |
| Saeed Mahameed |
35 |
2.86% |
4 |
8.00% |
| Eran Ben Elisha |
22 |
1.80% |
1 |
2.00% |
| Eric Dumazet |
13 |
1.06% |
1 |
2.00% |
| Gil Rockah |
13 |
1.06% |
1 |
2.00% |
| Jakub Kiciński |
12 |
0.98% |
1 |
2.00% |
| Aya Levin |
7 |
0.57% |
2 |
4.00% |
| Gal Pressman |
6 |
0.49% |
1 |
2.00% |
| Yishai Hadas |
5 |
0.41% |
1 |
2.00% |
| Yamin Friedman |
4 |
0.33% |
1 |
2.00% |
| Thomas Gleixner |
3 |
0.25% |
1 |
2.00% |
| Magnus Karlsson |
2 |
0.16% |
2 |
4.00% |
| Adham Faris |
2 |
0.16% |
1 |
2.00% |
| Jesper Dangaard Brouer |
2 |
0.16% |
1 |
2.00% |
| Total |
1224 |
|
50 |
|
/*
* Copyright (c) 2015, Mellanox Technologies. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <linux/irq.h>
#include <net/xdp_sock_drv.h>
#include "en.h"
#include "en/txrx.h"
#include "en/xdp.h"
#include "en/xsk/rx.h"
#include "en/xsk/tx.h"
#include "en_accel/ktls_txrx.h"
static inline bool mlx5e_channel_no_affinity_change(struct mlx5e_channel *c)
{
int current_cpu = smp_processor_id();
return cpumask_test_cpu(current_cpu, c->aff_mask);
}
static void mlx5e_handle_tx_dim(struct mlx5e_txqsq *sq)
{
struct mlx5e_sq_stats *stats = sq->stats;
struct dim_sample dim_sample = {};
if (unlikely(!test_bit(MLX5E_SQ_STATE_DIM, &sq->state)))
return;
dim_update_sample(sq->cq.event_ctr, stats->packets, stats->bytes, &dim_sample);
net_dim(&sq->dim, dim_sample);
}
static void mlx5e_handle_rx_dim(struct mlx5e_rq *rq)
{
struct mlx5e_rq_stats *stats = rq->stats;
struct dim_sample dim_sample = {};
if (unlikely(!test_bit(MLX5E_RQ_STATE_DIM, &rq->state)))
return;
dim_update_sample(rq->cq.event_ctr, stats->packets, stats->bytes, &dim_sample);
net_dim(&rq->dim, dim_sample);
}
void mlx5e_trigger_irq(struct mlx5e_icosq *sq)
{
struct mlx5_wq_cyc *wq = &sq->wq;
struct mlx5e_tx_wqe *nopwqe;
u16 pi = mlx5_wq_cyc_ctr2ix(wq, sq->pc);
sq->db.wqe_info[pi] = (struct mlx5e_icosq_wqe_info) {
.wqe_type = MLX5E_ICOSQ_WQE_NOP,
.num_wqebbs = 1,
};
nopwqe = mlx5e_post_nop(wq, sq->sqn, &sq->pc);
mlx5e_notify_hw(wq, sq->pc, sq->uar_map, &nopwqe->ctrl);
}
static bool mlx5e_napi_xsk_post(struct mlx5e_xdpsq *xsksq, struct mlx5e_rq *xskrq)
{
bool need_wakeup = xsk_uses_need_wakeup(xskrq->xsk_pool);
bool busy_xsk = false, xsk_rx_alloc_err;
/* If SQ is empty, there are no TX completions to trigger NAPI, so set
* need_wakeup. Do it before queuing packets for TX to avoid race
* condition with userspace.
*/
if (need_wakeup && xsksq->pc == xsksq->cc)
xsk_set_tx_need_wakeup(xsksq->xsk_pool);
busy_xsk |= mlx5e_xsk_tx(xsksq, MLX5E_TX_XSK_POLL_BUDGET);
/* If we queued some packets for TX, no need for wakeup anymore. */
if (need_wakeup && xsksq->pc != xsksq->cc)
xsk_clear_tx_need_wakeup(xsksq->xsk_pool);
/* If WQ is empty, RX won't trigger NAPI, so set need_wakeup. Do it
* before refilling to avoid race condition with userspace.
*/
if (need_wakeup && !mlx5e_rqwq_get_cur_sz(xskrq))
xsk_set_rx_need_wakeup(xskrq->xsk_pool);
xsk_rx_alloc_err = INDIRECT_CALL_2(xskrq->post_wqes,
mlx5e_post_rx_mpwqes,
mlx5e_post_rx_wqes,
xskrq);
/* Ask for wakeup if WQ is not full after refill. */
if (!need_wakeup)
busy_xsk |= xsk_rx_alloc_err;
else if (xsk_rx_alloc_err)
xsk_set_rx_need_wakeup(xskrq->xsk_pool);
else
xsk_clear_rx_need_wakeup(xskrq->xsk_pool);
return busy_xsk;
}
int mlx5e_napi_poll(struct napi_struct *napi, int budget)
{
struct mlx5e_channel *c = container_of(napi, struct mlx5e_channel,
napi);
struct mlx5e_ch_stats *ch_stats = c->stats;
struct mlx5e_xdpsq *xsksq = &c->xsksq;
struct mlx5e_txqsq __rcu **qos_sqs;
struct mlx5e_rq *xskrq = &c->xskrq;
struct mlx5e_rq *rq = &c->rq;
bool aff_change = false;
bool busy_xsk = false;
bool busy = false;
int work_done = 0;
u16 qos_sqs_size;
bool xsk_open;
int i;
rcu_read_lock();
qos_sqs = rcu_dereference(c->qos_sqs);
xsk_open = test_bit(MLX5E_CHANNEL_STATE_XSK, c->state);
ch_stats->poll++;
for (i = 0; i < c->num_tc; i++)
busy |= mlx5e_poll_tx_cq(&c->sq[i].cq, budget);
if (unlikely(qos_sqs)) {
smp_rmb(); /* Pairs with mlx5e_qos_alloc_queues. */
qos_sqs_size = READ_ONCE(c->qos_sqs_size);
for (i = 0; i < qos_sqs_size; i++) {
struct mlx5e_txqsq *sq = rcu_dereference(qos_sqs[i]);
if (sq)
busy |= mlx5e_poll_tx_cq(&sq->cq, budget);
}
}
/* budget=0 means we may be in IRQ context, do as little as possible */
if (unlikely(!budget))
goto out;
busy |= mlx5e_poll_xdpsq_cq(&c->xdpsq.cq);
if (c->xdp)
busy |= mlx5e_poll_xdpsq_cq(&c->rq_xdpsq.cq);
if (xsk_open)
work_done = mlx5e_poll_rx_cq(&xskrq->cq, budget);
if (likely(budget - work_done))
work_done += mlx5e_poll_rx_cq(&rq->cq, budget - work_done);
busy |= work_done == budget;
mlx5e_poll_ico_cq(&c->icosq.cq);
if (mlx5e_poll_ico_cq(&c->async_icosq.cq))
/* Don't clear the flag if nothing was polled to prevent
* queueing more WQEs and overflowing the async ICOSQ.
*/
clear_bit(MLX5E_SQ_STATE_PENDING_XSK_TX, &c->async_icosq.state);
/* Keep after async ICOSQ CQ poll */
if (unlikely(mlx5e_ktls_rx_pending_resync_list(c, budget)))
busy |= mlx5e_ktls_rx_handle_resync_list(c, budget);
busy |= INDIRECT_CALL_2(rq->post_wqes,
mlx5e_post_rx_mpwqes,
mlx5e_post_rx_wqes,
rq);
if (xsk_open) {
busy |= mlx5e_poll_xdpsq_cq(&xsksq->cq);
busy_xsk |= mlx5e_napi_xsk_post(xsksq, xskrq);
}
busy |= busy_xsk;
if (busy) {
if (likely(mlx5e_channel_no_affinity_change(c))) {
work_done = budget;
goto out;
}
ch_stats->aff_change++;
aff_change = true;
if (work_done == budget)
work_done--;
}
if (unlikely(!napi_complete_done(napi, work_done)))
goto out;
ch_stats->arm++;
for (i = 0; i < c->num_tc; i++) {
mlx5e_handle_tx_dim(&c->sq[i]);
mlx5e_cq_arm(&c->sq[i].cq);
}
if (unlikely(qos_sqs)) {
for (i = 0; i < qos_sqs_size; i++) {
struct mlx5e_txqsq *sq = rcu_dereference(qos_sqs[i]);
if (sq) {
mlx5e_handle_tx_dim(sq);
mlx5e_cq_arm(&sq->cq);
}
}
}
mlx5e_handle_rx_dim(rq);
mlx5e_cq_arm(&rq->cq);
mlx5e_cq_arm(&c->icosq.cq);
mlx5e_cq_arm(&c->async_icosq.cq);
mlx5e_cq_arm(&c->xdpsq.cq);
if (xsk_open) {
mlx5e_handle_rx_dim(xskrq);
mlx5e_cq_arm(&xsksq->cq);
mlx5e_cq_arm(&xskrq->cq);
}
if (unlikely(aff_change && busy_xsk)) {
mlx5e_trigger_irq(&c->icosq);
ch_stats->force_irq++;
}
out:
rcu_read_unlock();
return work_done;
}
void mlx5e_completion_event(struct mlx5_core_cq *mcq, struct mlx5_eqe *eqe)
{
struct mlx5e_cq *cq = container_of(mcq, struct mlx5e_cq, mcq);
napi_schedule(cq->napi);
cq->event_ctr++;
cq->ch_stats->events++;
}
void mlx5e_cq_error_event(struct mlx5_core_cq *mcq, enum mlx5_event event)
{
struct mlx5e_cq *cq = container_of(mcq, struct mlx5e_cq, mcq);
struct net_device *netdev = cq->netdev;
netdev_err(netdev, "%s: cqn=0x%.6x event=0x%.2x\n",
__func__, mcq->cqn, event);
}