Contributors: 14
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Maxim Mikityanskiy |
343 |
34.37% |
8 |
21.05% |
| Amir Vadai |
213 |
21.34% |
1 |
2.63% |
| Tariq Toukan |
203 |
20.34% |
12 |
31.58% |
| Tal Gilboa |
122 |
12.22% |
2 |
5.26% |
| Saeed Mahameed |
47 |
4.71% |
5 |
13.16% |
| Eran Ben Elisha |
22 |
2.20% |
1 |
2.63% |
| Gal Pressman |
8 |
0.80% |
1 |
2.63% |
| Andy Gospodarek |
8 |
0.80% |
2 |
5.26% |
| Gil Rockah |
8 |
0.80% |
1 |
2.63% |
| Eric Dumazet |
8 |
0.80% |
1 |
2.63% |
| Aya Levin |
5 |
0.50% |
1 |
2.63% |
| Yishai Hadas |
5 |
0.50% |
1 |
2.63% |
| Yamin Friedman |
4 |
0.40% |
1 |
2.63% |
| Jesper Dangaard Brouer |
2 |
0.20% |
1 |
2.63% |
| Total |
998 |
|
38 |
|
/*
* 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 <linux/indirect_call_wrapper.h>
#include "en.h"
#include "en/xdp.h"
#include "en/xsk/rx.h"
#include "en/xsk/tx.h"
static inline bool mlx5e_channel_no_affinity_change(struct mlx5e_channel *c)
{
int current_cpu = smp_processor_id();
const struct cpumask *aff;
struct irq_data *idata;
idata = irq_desc_get_irq_data(c->irq_desc);
aff = irq_data_get_affinity_mask(idata);
return cpumask_test_cpu(current_cpu, aff);
}
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_AM, &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_AM, &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 busy_xsk = false, xsk_rx_alloc_err;
/* Handle the race between the application querying need_wakeup and the
* driver setting it:
* 1. Update need_wakeup both before and after the TX. If it goes to
* "yes", it can only happen with the first update.
* 2. If the application queried need_wakeup before we set it, the
* packets will be transmitted anyway, even w/o a wakeup.
* 3. Give a chance to clear need_wakeup after new packets were queued
* for TX.
*/
mlx5e_xsk_update_tx_wakeup(xsksq);
busy_xsk |= mlx5e_xsk_tx(xsksq, MLX5E_TX_XSK_POLL_BUDGET);
mlx5e_xsk_update_tx_wakeup(xsksq);
xsk_rx_alloc_err = INDIRECT_CALL_2(xskrq->post_wqes,
mlx5e_post_rx_mpwqes,
mlx5e_post_rx_wqes,
xskrq);
busy_xsk |= mlx5e_xsk_update_rx_wakeup(xskrq, xsk_rx_alloc_err);
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_rq *xskrq = &c->xskrq;
struct mlx5e_rq *rq = &c->rq;
bool xsk_open = test_bit(MLX5E_CHANNEL_STATE_XSK, c->state);
bool aff_change = false;
bool busy_xsk = false;
bool busy = false;
int work_done = 0;
int i;
ch_stats->poll++;
for (i = 0; i < c->num_tc; i++)
busy |= mlx5e_poll_tx_cq(&c->sq[i].cq, budget);
busy |= mlx5e_poll_xdpsq_cq(&c->xdpsq.cq);
if (c->xdp)
busy |= mlx5e_poll_xdpsq_cq(&c->rq_xdpsq.cq);
if (likely(budget)) { /* budget=0 means: don't poll rx rings */
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);
busy |= INDIRECT_CALL_2(rq->post_wqes,
mlx5e_post_rx_mpwqes,
mlx5e_post_rx_wqes,
rq);
if (xsk_open) {
if (mlx5e_poll_ico_cq(&c->xskicosq.cq))
/* Don't clear the flag if nothing was polled to prevent
* queueing more WQEs and overflowing XSKICOSQ.
*/
clear_bit(MLX5E_SQ_STATE_PENDING_XSK_TX, &c->xskicosq.state);
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)))
return budget;
ch_stats->aff_change++;
aff_change = true;
if (budget && work_done == budget)
work_done--;
}
if (unlikely(!napi_complete_done(napi, work_done)))
return work_done;
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);
}
mlx5e_handle_rx_dim(rq);
mlx5e_cq_arm(&rq->cq);
mlx5e_cq_arm(&c->icosq.cq);
mlx5e_cq_arm(&c->xdpsq.cq);
if (xsk_open) {
mlx5e_handle_rx_dim(xskrq);
mlx5e_cq_arm(&c->xskicosq.cq);
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++;
}
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->channel->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 mlx5e_channel *c = cq->channel;
struct net_device *netdev = c->netdev;
netdev_err(netdev, "%s: cqn=0x%.6x event=0x%.2x\n",
__func__, mcq->cqn, event);
}