freebsd-skq/sys/dev/ena/ena_sysctl.c
mw 5760da7c27 Allow usage of more RX descriptors than 1 in ENA driver
Using only 1 descriptor on RX could be an issue, if system would be low
on resources and could not provide driver with large chunks of
contiguous memory.

Submitted by: Michal Krawczyk <mk@semihalf.com>
Reviewed by: byenduri_gmail.com
Obtained from: Semihalf
Sponsored by: Amazon, Inc.
Differential Revision: https://reviews.freebsd.org/D12871
2017-11-09 13:36:42 +00:00

252 lines
9.1 KiB
C

/*-
* BSD LICENSE
*
* Copyright (c) 2015-2017 Amazon.com, Inc. or its affiliates.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "ena_sysctl.h"
static void ena_sysctl_add_wd(struct ena_adapter *);
static void ena_sysctl_add_stats(struct ena_adapter *);
void
ena_sysctl_add_nodes(struct ena_adapter *adapter)
{
ena_sysctl_add_wd(adapter);
ena_sysctl_add_stats(adapter);
}
static void
ena_sysctl_add_wd(struct ena_adapter *adapter)
{
device_t dev;
struct sysctl_ctx_list *ctx;
struct sysctl_oid *tree;
struct sysctl_oid_list *child;
dev = adapter->pdev;
ctx = device_get_sysctl_ctx(dev);
tree = device_get_sysctl_tree(dev);
child = SYSCTL_CHILDREN(tree);
/* Sysctl calls for Watchdog service */
SYSCTL_ADD_INT(ctx, child, OID_AUTO, "wd_active",
CTLFLAG_RWTUN, &adapter->wd_active, 0,
"Watchdog is active");
SYSCTL_ADD_QUAD(ctx, child, OID_AUTO, "keep_alive_timeout",
CTLFLAG_RWTUN, &adapter->keep_alive_timeout,
"Timeout for Keep Alive messages");
SYSCTL_ADD_QUAD(ctx, child, OID_AUTO, "missing_tx_timeout",
CTLFLAG_RWTUN, &adapter->missing_tx_timeout,
"Timeout for TX completion");
SYSCTL_ADD_U32(ctx, child, OID_AUTO, "missing_tx_max_queues",
CTLFLAG_RWTUN, &adapter->missing_tx_max_queues, 0,
"Number of TX queues to check per run");
SYSCTL_ADD_U32(ctx, child, OID_AUTO, "missing_tx_threshold",
CTLFLAG_RWTUN, &adapter->missing_tx_threshold, 0,
"Max number of timeouted packets");
}
static void
ena_sysctl_add_stats(struct ena_adapter *adapter)
{
device_t dev;
struct ena_ring *tx_ring;
struct ena_ring *rx_ring;
struct ena_hw_stats *hw_stats;
struct ena_stats_dev *dev_stats;
struct ena_stats_tx *tx_stats;
struct ena_stats_rx *rx_stats;
struct ena_com_stats_admin *admin_stats;
struct sysctl_ctx_list *ctx;
struct sysctl_oid *tree;
struct sysctl_oid_list *child;
struct sysctl_oid *queue_node, *tx_node, *rx_node, *hw_node;
struct sysctl_oid *admin_node;
struct sysctl_oid_list *queue_list, *tx_list, *rx_list, *hw_list;
struct sysctl_oid_list *admin_list;
#define QUEUE_NAME_LEN 32
char namebuf[QUEUE_NAME_LEN];
int i;
dev = adapter->pdev;
ctx = device_get_sysctl_ctx(dev);
tree = device_get_sysctl_tree(dev);
child = SYSCTL_CHILDREN(tree);
tx_ring = adapter->tx_ring;
rx_ring = adapter->rx_ring;
hw_stats = &adapter->hw_stats;
dev_stats = &adapter->dev_stats;
admin_stats = &adapter->ena_dev->admin_queue.stats;
SYSCTL_ADD_COUNTER_U64(ctx, child, OID_AUTO, "wd_expired",
CTLFLAG_RD, &dev_stats->wd_expired,
"Watchdog expiry count");
SYSCTL_ADD_COUNTER_U64(ctx, child, OID_AUTO, "interface_up",
CTLFLAG_RD, &dev_stats->interface_up,
"Network interface up count");
SYSCTL_ADD_COUNTER_U64(ctx, child, OID_AUTO, "interface_down",
CTLFLAG_RD, &dev_stats->interface_down,
"Network interface down count");
SYSCTL_ADD_COUNTER_U64(ctx, child, OID_AUTO, "admin_q_pause",
CTLFLAG_RD, &dev_stats->admin_q_pause,
"Admin queue pauses");
for (i = 0; i < adapter->num_queues; ++i, ++tx_ring, ++rx_ring) {
snprintf(namebuf, QUEUE_NAME_LEN, "queue%d", i);
queue_node = SYSCTL_ADD_NODE(ctx, child, OID_AUTO,
namebuf, CTLFLAG_RD, NULL, "Queue Name");
queue_list = SYSCTL_CHILDREN(queue_node);
/* TX specific stats */
tx_node = SYSCTL_ADD_NODE(ctx, queue_list, OID_AUTO,
"tx_ring", CTLFLAG_RD, NULL, "TX ring");
tx_list = SYSCTL_CHILDREN(tx_node);
tx_stats = &tx_ring->tx_stats;
SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
"count", CTLFLAG_RD,
&tx_stats->cnt, "Packets sent");
SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
"bytes", CTLFLAG_RD,
&tx_stats->bytes, "Bytes sent");
SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
"prepare_ctx_err", CTLFLAG_RD,
&tx_stats->prepare_ctx_err,
"TX buffer preparation failures");
SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
"dma_mapping_err", CTLFLAG_RD,
&tx_stats->dma_mapping_err, "DMA mapping failures");
SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
"doorbells", CTLFLAG_RD,
&tx_stats->doorbells, "Queue doorbells");
SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
"missing_tx_comp", CTLFLAG_RD,
&tx_stats->missing_tx_comp, "TX completions missed");
SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
"bad_req_id", CTLFLAG_RD,
&tx_stats->bad_req_id, "Bad request id count");
SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
"mbuf_collapses", CTLFLAG_RD,
&tx_stats->collapse,
"Mbuf collapse count");
SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
"mbuf_collapse_err", CTLFLAG_RD,
&tx_stats->collapse_err,
"Mbuf collapse failures");
/* RX specific stats */
rx_node = SYSCTL_ADD_NODE(ctx, queue_list, OID_AUTO,
"rx_ring", CTLFLAG_RD, NULL, "RX ring");
rx_list = SYSCTL_CHILDREN(rx_node);
rx_stats = &rx_ring->rx_stats;
SYSCTL_ADD_COUNTER_U64(ctx, rx_list, OID_AUTO,
"count", CTLFLAG_RD,
&rx_stats->cnt, "Packets received");
SYSCTL_ADD_COUNTER_U64(ctx, rx_list, OID_AUTO,
"bytes", CTLFLAG_RD,
&rx_stats->bytes, "Bytes received");
SYSCTL_ADD_COUNTER_U64(ctx, rx_list, OID_AUTO,
"refil_partial", CTLFLAG_RD,
&rx_stats->refil_partial, "Partial refilled mbufs");
SYSCTL_ADD_COUNTER_U64(ctx, rx_list, OID_AUTO,
"bad_csum", CTLFLAG_RD,
&rx_stats->bad_csum, "Bad RX checksum");
SYSCTL_ADD_COUNTER_U64(ctx, rx_list, OID_AUTO,
"mbuf_alloc_fail", CTLFLAG_RD,
&rx_stats->mbuf_alloc_fail, "Failed mbuf allocs");
SYSCTL_ADD_COUNTER_U64(ctx, rx_list, OID_AUTO,
"mjum_alloc_fail", CTLFLAG_RD,
&rx_stats->mjum_alloc_fail, "Failed jumbo mbuf allocs");
SYSCTL_ADD_COUNTER_U64(ctx, rx_list, OID_AUTO,
"dma_mapping_err", CTLFLAG_RD,
&rx_stats->dma_mapping_err, "DMA mapping errors");
SYSCTL_ADD_COUNTER_U64(ctx, rx_list, OID_AUTO,
"bad_desc_num", CTLFLAG_RD,
&rx_stats->bad_desc_num, "Bad descriptor count");
SYSCTL_ADD_COUNTER_U64(ctx, rx_list, OID_AUTO,
"bad_req_id", CTLFLAG_RD,
&rx_stats->bad_req_id, "Bad request id count");
SYSCTL_ADD_COUNTER_U64(ctx, rx_list, OID_AUTO,
"empty_rx_ring", CTLFLAG_RD,
&rx_stats->empty_rx_ring, "RX descriptors depletion count");
}
/* Stats read from device */
hw_node = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "hw_stats",
CTLFLAG_RD, NULL, "Statistics from hardware");
hw_list = SYSCTL_CHILDREN(hw_node);
SYSCTL_ADD_COUNTER_U64(ctx, hw_list, OID_AUTO, "rx_packets", CTLFLAG_RD,
&hw_stats->rx_packets, "Packets received");
SYSCTL_ADD_COUNTER_U64(ctx, hw_list, OID_AUTO, "tx_packets", CTLFLAG_RD,
&hw_stats->tx_packets, "Packets transmitted");
SYSCTL_ADD_COUNTER_U64(ctx, hw_list, OID_AUTO, "rx_bytes", CTLFLAG_RD,
&hw_stats->rx_bytes, "Bytes received");
SYSCTL_ADD_COUNTER_U64(ctx, hw_list, OID_AUTO, "tx_bytes", CTLFLAG_RD,
&hw_stats->tx_bytes, "Bytes transmitted");
SYSCTL_ADD_COUNTER_U64(ctx, hw_list, OID_AUTO, "rx_drops", CTLFLAG_RD,
&hw_stats->rx_drops, "Receive packet drops");
/* ENA Admin queue stats */
admin_node = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "admin_stats",
CTLFLAG_RD, NULL, "ENA Admin Queue statistics");
admin_list = SYSCTL_CHILDREN(admin_node);
SYSCTL_ADD_U32(ctx, admin_list, OID_AUTO, "aborted_cmd", CTLFLAG_RD,
&admin_stats->aborted_cmd, 0, "Aborted commands");
SYSCTL_ADD_U32(ctx, admin_list, OID_AUTO, "sumbitted_cmd", CTLFLAG_RD,
&admin_stats->submitted_cmd, 0, "Submitted commands");
SYSCTL_ADD_U32(ctx, admin_list, OID_AUTO, "completed_cmd", CTLFLAG_RD,
&admin_stats->completed_cmd, 0, "Completed commands");
SYSCTL_ADD_U32(ctx, admin_list, OID_AUTO, "out_of_space", CTLFLAG_RD,
&admin_stats->out_of_space, 0, "Queue out of space");
SYSCTL_ADD_U32(ctx, admin_list, OID_AUTO, "no_completion", CTLFLAG_RD,
&admin_stats->no_completion, 0, "Commands not completed");
}