freebsd-dev/sys/dev/ena/ena_sysctl.c
Dawid Gorecki 8f15f8a72b ena: Align names of constants
Most of the constants in ena.h file were prefixed with ENA_*, while
others did not have this prefix. Align the constants by prefixing the
remaining constants with ENA.

Obtained from: Semihalf
MFC after: 2 weeks
Sponsored by: Amazon, Inc.
2022-06-30 17:32:13 +02:00

909 lines
28 KiB
C

/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2015-2021 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>
#include <sys/param.h>
__FBSDID("$FreeBSD$");
#include "opt_rss.h"
#include "ena_rss.h"
#include "ena_sysctl.h"
static void ena_sysctl_add_wd(struct ena_adapter *);
static void ena_sysctl_add_stats(struct ena_adapter *);
static void ena_sysctl_add_eni_metrics(struct ena_adapter *);
static void ena_sysctl_add_tuneables(struct ena_adapter *);
/* Kernel option RSS prevents manipulation of key hash and indirection table. */
#ifndef RSS
static void ena_sysctl_add_rss(struct ena_adapter *);
#endif
static int ena_sysctl_buf_ring_size(SYSCTL_HANDLER_ARGS);
static int ena_sysctl_rx_queue_size(SYSCTL_HANDLER_ARGS);
static int ena_sysctl_io_queues_nb(SYSCTL_HANDLER_ARGS);
static int ena_sysctl_eni_metrics_interval(SYSCTL_HANDLER_ARGS);
#ifndef RSS
static int ena_sysctl_rss_key(SYSCTL_HANDLER_ARGS);
static int ena_sysctl_rss_indir_table(SYSCTL_HANDLER_ARGS);
#endif
/* Limit max ENI sample rate to be an hour. */
#define ENI_METRICS_MAX_SAMPLE_INTERVAL 3600
#define ENA_HASH_KEY_MSG_SIZE (ENA_HASH_KEY_SIZE * 2 + 1)
static SYSCTL_NODE(_hw, OID_AUTO, ena, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
"ENA driver parameters");
/*
* Logging level for changing verbosity of the output
*/
int ena_log_level = ENA_INFO;
SYSCTL_INT(_hw_ena, OID_AUTO, log_level, CTLFLAG_RWTUN, &ena_log_level, 0,
"Logging level indicating verbosity of the logs");
SYSCTL_CONST_STRING(_hw_ena, OID_AUTO, driver_version, CTLFLAG_RD,
ENA_DRV_MODULE_VERSION, "ENA driver version");
/*
* Use 9k mbufs for the Rx buffers. Default to 0 (use page size mbufs instead).
* Using 9k mbufs in low memory conditions might cause allocation to take a lot
* of time and lead to the OS instability as it needs to look for the contiguous
* pages.
* However, page size mbufs has a bit smaller throughput than 9k mbufs, so if
* the network performance is the priority, the 9k mbufs can be used.
*/
int ena_enable_9k_mbufs = 0;
SYSCTL_INT(_hw_ena, OID_AUTO, enable_9k_mbufs, CTLFLAG_RDTUN,
&ena_enable_9k_mbufs, 0, "Use 9 kB mbufs for Rx descriptors");
/*
* Force the driver to use large LLQ (Low Latency Queue) header. Defaults to
* false. This option may be important for platforms, which often handle packet
* headers on Tx with total header size greater than 96B, as it may
* reduce the latency.
* It also reduces the maximum Tx queue size by half, so it may cause more Tx
* packet drops.
*/
bool ena_force_large_llq_header = false;
SYSCTL_BOOL(_hw_ena, OID_AUTO, force_large_llq_header, CTLFLAG_RDTUN,
&ena_force_large_llq_header, 0,
"Increases maximum supported header size in LLQ mode to 224 bytes, while reducing the maximum Tx queue size by half.\n");
int ena_rss_table_size = ENA_RX_RSS_TABLE_SIZE;
void
ena_sysctl_add_nodes(struct ena_adapter *adapter)
{
ena_sysctl_add_wd(adapter);
ena_sysctl_add_stats(adapter);
ena_sysctl_add_eni_metrics(adapter);
ena_sysctl_add_tuneables(adapter);
#ifndef RSS
ena_sysctl_add_rss(adapter);
#endif
}
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_io_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 | CTLFLAG_MPSAFE, NULL, "Queue Name");
queue_list = SYSCTL_CHILDREN(queue_node);
adapter->que[i].oid = queue_node;
#ifdef RSS
/* Common stats */
SYSCTL_ADD_INT(ctx, queue_list, OID_AUTO, "cpu", CTLFLAG_RD,
&adapter->que[i].cpu, 0, "CPU affinity");
SYSCTL_ADD_INT(ctx, queue_list, OID_AUTO, "domain", CTLFLAG_RD,
&adapter->que[i].domain, 0, "NUMA domain");
#endif
/* TX specific stats */
tx_node = SYSCTL_ADD_NODE(ctx, queue_list, OID_AUTO, "tx_ring",
CTLFLAG_RD | CTLFLAG_MPSAFE, 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");
SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO, "queue_wakeups",
CTLFLAG_RD, &tx_stats->queue_wakeup, "Queue wakeups");
SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO, "queue_stops",
CTLFLAG_RD, &tx_stats->queue_stop, "Queue stops");
SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
"llq_buffer_copy", CTLFLAG_RD, &tx_stats->llq_buffer_copy,
"Header copies for llq transaction");
SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
"unmask_interrupt_num", CTLFLAG_RD,
&tx_stats->unmask_interrupt_num,
"Unmasked interrupt count");
/* RX specific stats */
rx_node = SYSCTL_ADD_NODE(ctx, queue_list, OID_AUTO, "rx_ring",
CTLFLAG_RD | CTLFLAG_MPSAFE, 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, "csum_bad",
CTLFLAG_RD, &rx_stats->csum_bad, "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");
SYSCTL_ADD_COUNTER_U64(ctx, rx_list, OID_AUTO, "csum_good",
CTLFLAG_RD, &rx_stats->csum_good,
"Valid RX checksum calculations");
}
/* Stats read from device */
hw_node = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "hw_stats",
CTLFLAG_RD | CTLFLAG_MPSAFE, 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");
SYSCTL_ADD_COUNTER_U64(ctx, hw_list, OID_AUTO, "tx_drops", CTLFLAG_RD,
&hw_stats->tx_drops, "Transmit packet drops");
/* ENA Admin queue stats */
admin_node = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "admin_stats",
CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, "ENA Admin Queue statistics");
admin_list = SYSCTL_CHILDREN(admin_node);
SYSCTL_ADD_U64(ctx, admin_list, OID_AUTO, "aborted_cmd", CTLFLAG_RD,
&admin_stats->aborted_cmd, 0, "Aborted commands");
SYSCTL_ADD_U64(ctx, admin_list, OID_AUTO, "sumbitted_cmd", CTLFLAG_RD,
&admin_stats->submitted_cmd, 0, "Submitted commands");
SYSCTL_ADD_U64(ctx, admin_list, OID_AUTO, "completed_cmd", CTLFLAG_RD,
&admin_stats->completed_cmd, 0, "Completed commands");
SYSCTL_ADD_U64(ctx, admin_list, OID_AUTO, "out_of_space", CTLFLAG_RD,
&admin_stats->out_of_space, 0, "Queue out of space");
SYSCTL_ADD_U64(ctx, admin_list, OID_AUTO, "no_completion", CTLFLAG_RD,
&admin_stats->no_completion, 0, "Commands not completed");
}
static void
ena_sysctl_add_eni_metrics(struct ena_adapter *adapter)
{
device_t dev;
struct ena_admin_eni_stats *eni_metrics;
struct sysctl_ctx_list *ctx;
struct sysctl_oid *tree;
struct sysctl_oid_list *child;
struct sysctl_oid *eni_node;
struct sysctl_oid_list *eni_list;
dev = adapter->pdev;
ctx = device_get_sysctl_ctx(dev);
tree = device_get_sysctl_tree(dev);
child = SYSCTL_CHILDREN(tree);
eni_node = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "eni_metrics",
CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, "ENA's ENI metrics");
eni_list = SYSCTL_CHILDREN(eni_node);
eni_metrics = &adapter->eni_metrics;
SYSCTL_ADD_U64(ctx, eni_list, OID_AUTO, "bw_in_allowance_exceeded",
CTLFLAG_RD, &eni_metrics->bw_in_allowance_exceeded, 0,
"Inbound BW allowance exceeded");
SYSCTL_ADD_U64(ctx, eni_list, OID_AUTO, "bw_out_allowance_exceeded",
CTLFLAG_RD, &eni_metrics->bw_out_allowance_exceeded, 0,
"Outbound BW allowance exceeded");
SYSCTL_ADD_U64(ctx, eni_list, OID_AUTO, "pps_allowance_exceeded",
CTLFLAG_RD, &eni_metrics->pps_allowance_exceeded, 0,
"PPS allowance exceeded");
SYSCTL_ADD_U64(ctx, eni_list, OID_AUTO, "conntrack_allowance_exceeded",
CTLFLAG_RD, &eni_metrics->conntrack_allowance_exceeded, 0,
"Connection tracking allowance exceeded");
SYSCTL_ADD_U64(ctx, eni_list, OID_AUTO, "linklocal_allowance_exceeded",
CTLFLAG_RD, &eni_metrics->linklocal_allowance_exceeded, 0,
"Linklocal packet rate allowance exceeded");
/*
* Tuneable, which determines how often ENI metrics will be read.
* 0 means it's turned off. Maximum allowed value is limited by:
* ENI_METRICS_MAX_SAMPLE_INTERVAL.
*/
SYSCTL_ADD_PROC(ctx, eni_list, OID_AUTO, "sample_interval",
CTLTYPE_U16 | CTLFLAG_RW | CTLFLAG_MPSAFE, adapter, 0,
ena_sysctl_eni_metrics_interval, "SU",
"Interval in seconds for updating ENI emetrics. 0 turns off the update.");
}
static void
ena_sysctl_add_tuneables(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);
/* Tuneable number of buffers in the buf-ring (drbr) */
SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "buf_ring_size",
CTLTYPE_U32 | CTLFLAG_RW | CTLFLAG_MPSAFE, adapter, 0,
ena_sysctl_buf_ring_size, "I",
"Size of the Tx buffer ring (drbr).");
/* Tuneable number of the Rx ring size */
SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "rx_queue_size",
CTLTYPE_U32 | CTLFLAG_RW | CTLFLAG_MPSAFE, adapter, 0,
ena_sysctl_rx_queue_size, "I",
"Size of the Rx ring. The size should be a power of 2.");
/* Tuneable number of IO queues */
SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "io_queues_nb",
CTLTYPE_U32 | CTLFLAG_RW | CTLFLAG_MPSAFE, adapter, 0,
ena_sysctl_io_queues_nb, "I", "Number of IO queues.");
}
/* Kernel option RSS prevents manipulation of key hash and indirection table. */
#ifndef RSS
static void
ena_sysctl_add_rss(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);
/* RSS options */
tree = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "rss",
CTLFLAG_RW | CTLFLAG_MPSAFE, NULL, "Receive Side Scaling options.");
child = SYSCTL_CHILDREN(tree);
/* RSS hash key */
SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "key",
CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_MPSAFE, adapter, 0,
ena_sysctl_rss_key, "A", "RSS key.");
/* Tuneable RSS indirection table */
SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "indir_table",
CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_MPSAFE, adapter, 0,
ena_sysctl_rss_indir_table, "A", "RSS indirection table.");
/* RSS indirection table size */
SYSCTL_ADD_INT(ctx, child, OID_AUTO, "indir_table_size",
CTLFLAG_RD | CTLFLAG_MPSAFE, &ena_rss_table_size, 0,
"RSS indirection table size.");
}
#endif /* RSS */
/*
* ena_sysctl_update_queue_node_nb - Register/unregister sysctl queue nodes.
*
* Whether the nodes are registered or unregistered depends on a delta between
* the `old` and `new` parameters, representing the number of queues.
*
* This function is used to hide sysctl attributes for queue nodes which aren't
* currently used by the HW (e.g. after a call to `ena_sysctl_io_queues_nb`).
*
* NOTE:
* All unregistered nodes must be registered again at detach, i.e. by a call to
* this function.
*/
void
ena_sysctl_update_queue_node_nb(struct ena_adapter *adapter, int old, int new)
{
struct sysctl_oid *oid;
int min, max, i;
min = MIN(old, new);
max = MIN(MAX(old, new), adapter->max_num_io_queues);
for (i = min; i < max; ++i) {
oid = adapter->que[i].oid;
sysctl_wlock();
if (old > new)
sysctl_unregister_oid(oid);
else
sysctl_register_oid(oid);
sysctl_wunlock();
}
}
static int
ena_sysctl_buf_ring_size(SYSCTL_HANDLER_ARGS)
{
struct ena_adapter *adapter = arg1;
uint32_t val;
int error;
ENA_LOCK_LOCK();
if (unlikely(!ENA_FLAG_ISSET(ENA_FLAG_DEVICE_RUNNING, adapter))) {
error = EINVAL;
goto unlock;
}
val = 0;
error = sysctl_wire_old_buffer(req, sizeof(val));
if (error == 0) {
val = adapter->buf_ring_size;
error = sysctl_handle_32(oidp, &val, 0, req);
}
if (error != 0 || req->newptr == NULL)
goto unlock;
if (!powerof2(val) || val == 0) {
ena_log(adapter->pdev, ERR,
"Requested new Tx buffer ring size (%u) is not a power of 2\n",
val);
error = EINVAL;
goto unlock;
}
if (val != adapter->buf_ring_size) {
ena_log(adapter->pdev, INFO,
"Requested new Tx buffer ring size: %d. Old size: %d\n",
val, adapter->buf_ring_size);
error = ena_update_buf_ring_size(adapter, val);
} else {
ena_log(adapter->pdev, ERR,
"New Tx buffer ring size is the same as already used: %u\n",
adapter->buf_ring_size);
}
unlock:
ENA_LOCK_UNLOCK();
return (error);
}
static int
ena_sysctl_rx_queue_size(SYSCTL_HANDLER_ARGS)
{
struct ena_adapter *adapter = arg1;
uint32_t val;
int error;
ENA_LOCK_LOCK();
if (unlikely(!ENA_FLAG_ISSET(ENA_FLAG_DEVICE_RUNNING, adapter))) {
error = EINVAL;
goto unlock;
}
val = 0;
error = sysctl_wire_old_buffer(req, sizeof(val));
if (error == 0) {
val = adapter->requested_rx_ring_size;
error = sysctl_handle_32(oidp, &val, 0, req);
}
if (error != 0 || req->newptr == NULL)
goto unlock;
if (val < ENA_MIN_RING_SIZE || val > adapter->max_rx_ring_size) {
ena_log(adapter->pdev, ERR,
"Requested new Rx queue size (%u) is out of range: [%u, %u]\n",
val, ENA_MIN_RING_SIZE, adapter->max_rx_ring_size);
error = EINVAL;
goto unlock;
}
/* Check if the parameter is power of 2 */
if (!powerof2(val)) {
ena_log(adapter->pdev, ERR,
"Requested new Rx queue size (%u) is not a power of 2\n",
val);
error = EINVAL;
goto unlock;
}
if (val != adapter->requested_rx_ring_size) {
ena_log(adapter->pdev, INFO,
"Requested new Rx queue size: %u. Old size: %u\n", val,
adapter->requested_rx_ring_size);
error = ena_update_queue_size(adapter,
adapter->requested_tx_ring_size, val);
} else {
ena_log(adapter->pdev, ERR,
"New Rx queue size is the same as already used: %u\n",
adapter->requested_rx_ring_size);
}
unlock:
ENA_LOCK_UNLOCK();
return (error);
}
/*
* Change number of effectively used IO queues adapter->num_io_queues
*/
static int
ena_sysctl_io_queues_nb(SYSCTL_HANDLER_ARGS)
{
struct ena_adapter *adapter = arg1;
uint32_t old_num_queues, tmp = 0;
int error;
ENA_LOCK_LOCK();
if (unlikely(!ENA_FLAG_ISSET(ENA_FLAG_DEVICE_RUNNING, adapter))) {
error = EINVAL;
goto unlock;
}
error = sysctl_wire_old_buffer(req, sizeof(tmp));
if (error == 0) {
tmp = adapter->num_io_queues;
error = sysctl_handle_int(oidp, &tmp, 0, req);
}
if (error != 0 || req->newptr == NULL)
goto unlock;
if (tmp == 0) {
ena_log(adapter->pdev, ERR,
"Requested number of IO queues is zero\n");
error = EINVAL;
goto unlock;
}
/*
* The adapter::max_num_io_queues is the HW capability. The system
* resources availability may potentially be a tighter limit. Therefore
* the relation `adapter::max_num_io_queues >= adapter::msix_vecs`
* always holds true, while the `adapter::msix_vecs` is variable across
* device reset (`ena_destroy_device()` + `ena_restore_device()`).
*/
if (tmp > (adapter->msix_vecs - ENA_ADMIN_MSIX_VEC)) {
ena_log(adapter->pdev, ERR,
"Requested number of IO queues is higher than maximum allowed (%u)\n",
adapter->msix_vecs - ENA_ADMIN_MSIX_VEC);
error = EINVAL;
goto unlock;
}
if (tmp == adapter->num_io_queues) {
ena_log(adapter->pdev, ERR,
"Requested number of IO queues is equal to current value "
"(%u)\n",
adapter->num_io_queues);
} else {
ena_log(adapter->pdev, INFO,
"Requested new number of IO queues: %u, current value: "
"%u\n",
tmp, adapter->num_io_queues);
old_num_queues = adapter->num_io_queues;
error = ena_update_io_queue_nb(adapter, tmp);
if (error != 0)
return (error);
ena_sysctl_update_queue_node_nb(adapter, old_num_queues, tmp);
}
unlock:
ENA_LOCK_UNLOCK();
return (error);
}
static int
ena_sysctl_eni_metrics_interval(SYSCTL_HANDLER_ARGS)
{
struct ena_adapter *adapter = arg1;
uint16_t interval;
int error;
ENA_LOCK_LOCK();
if (unlikely(!ENA_FLAG_ISSET(ENA_FLAG_DEVICE_RUNNING, adapter))) {
error = EINVAL;
goto unlock;
}
error = sysctl_wire_old_buffer(req, sizeof(interval));
if (error == 0) {
interval = adapter->eni_metrics_sample_interval;
error = sysctl_handle_16(oidp, &interval, 0, req);
}
if (error != 0 || req->newptr == NULL)
goto unlock;
if (interval > ENI_METRICS_MAX_SAMPLE_INTERVAL) {
ena_log(adapter->pdev, ERR,
"ENI metrics update interval is out of range - maximum allowed value: %d seconds\n",
ENI_METRICS_MAX_SAMPLE_INTERVAL);
error = EINVAL;
goto unlock;
}
if (interval == 0) {
ena_log(adapter->pdev, INFO,
"ENI metrics update is now turned off\n");
bzero(&adapter->eni_metrics, sizeof(adapter->eni_metrics));
} else {
ena_log(adapter->pdev, INFO,
"ENI metrics update interval is set to: %" PRIu16
" seconds\n",
interval);
}
adapter->eni_metrics_sample_interval = interval;
unlock:
ENA_LOCK_UNLOCK();
return (0);
}
#ifndef RSS
/*
* Change the Receive Side Scaling hash key.
*/
static int
ena_sysctl_rss_key(SYSCTL_HANDLER_ARGS)
{
struct ena_adapter *adapter = arg1;
struct ena_com_dev *ena_dev = adapter->ena_dev;
enum ena_admin_hash_functions ena_func;
char msg[ENA_HASH_KEY_MSG_SIZE];
char elem[3] = { 0 };
char *endp;
u8 rss_key[ENA_HASH_KEY_SIZE];
int error, i;
ENA_LOCK_LOCK();
if (unlikely(!ENA_FLAG_ISSET(ENA_FLAG_DEVICE_RUNNING, adapter))) {
error = EINVAL;
goto unlock;
}
if (unlikely(!ENA_FLAG_ISSET(ENA_FLAG_RSS_ACTIVE, adapter))) {
error = ENOTSUP;
goto unlock;
}
error = sysctl_wire_old_buffer(req, sizeof(msg));
if (error != 0)
goto unlock;
error = ena_com_get_hash_function(adapter->ena_dev, &ena_func);
if (error != 0) {
device_printf(adapter->pdev, "Cannot get hash function\n");
goto unlock;
}
if (ena_func != ENA_ADMIN_TOEPLITZ) {
error = EINVAL;
device_printf(adapter->pdev, "Unsupported hash algorithm\n");
goto unlock;
}
error = ena_rss_get_hash_key(ena_dev, rss_key);
if (error != 0) {
device_printf(adapter->pdev, "Cannot get hash key\n");
goto unlock;
}
for (i = 0; i < ENA_HASH_KEY_SIZE; ++i)
snprintf(&msg[i * 2], 3, "%02x", rss_key[i]);
error = sysctl_handle_string(oidp, msg, sizeof(msg), req);
if (error != 0 || req->newptr == NULL)
goto unlock;
if (strlen(msg) != sizeof(msg) - 1) {
error = EINVAL;
device_printf(adapter->pdev, "Invalid key size\n");
goto unlock;
}
for (i = 0; i < ENA_HASH_KEY_SIZE; ++i) {
strncpy(elem, &msg[i * 2], 2);
rss_key[i] = strtol(elem, &endp, 16);
/* Both hex nibbles in the string must be valid to continue. */
if (endp == elem || *endp != '\0' || rss_key[i] < 0) {
error = EINVAL;
device_printf(adapter->pdev,
"Invalid key hex value: '%c'\n", *endp);
goto unlock;
}
}
error = ena_rss_set_hash(ena_dev, rss_key);
if (error != 0)
device_printf(adapter->pdev, "Cannot fill hash key\n");
unlock:
ENA_LOCK_UNLOCK();
return (error);
}
/*
* Change the Receive Side Scaling indirection table.
*
* The sysctl entry string consists of one or more `x:y` keypairs, where
* x stands for the table index and y for its new value.
* Table indices that don't need to be updated can be omitted from the string
* and will retain their existing values. If an index is entered more than once,
* the last value is used.
*
* Example:
* To update two selected indices in the RSS indirection table, e.g. setting
* index 0 to queue 5 and then index 5 to queue 0, the below command should be
* used:
* sysctl dev.ena.0.rss.indir_table="0:5 5:0"
*/
static int
ena_sysctl_rss_indir_table(SYSCTL_HANDLER_ARGS)
{
int num_queues, error;
struct ena_adapter *adapter = arg1;
struct ena_indir *indir;
char *msg, *buf, *endp;
uint32_t idx, value;
ENA_LOCK_LOCK();
if (unlikely(!ENA_FLAG_ISSET(ENA_FLAG_DEVICE_RUNNING, adapter))) {
error = EINVAL;
goto unlock;
}
if (unlikely(!ENA_FLAG_ISSET(ENA_FLAG_RSS_ACTIVE, adapter))) {
error = ENOTSUP;
goto unlock;
}
indir = adapter->rss_indir;
msg = indir->sysctl_buf;
if (unlikely(indir == NULL)) {
error = ENOTSUP;
goto unlock;
}
error = sysctl_handle_string(oidp, msg, sizeof(indir->sysctl_buf), req);
if (error != 0 || req->newptr == NULL)
goto unlock;
num_queues = adapter->num_io_queues;
/*
* This sysctl expects msg to be a list of `x:y` record pairs,
* where x is the indirection table index and y is its value.
*/
for (buf = msg; *buf != '\0'; buf = endp) {
idx = strtol(buf, &endp, 10);
if (endp == buf || idx < 0) {
device_printf(adapter->pdev, "Invalid index: %s\n",
buf);
error = EINVAL;
break;
}
if (idx >= ENA_RX_RSS_TABLE_SIZE) {
device_printf(adapter->pdev, "Index %d out of range\n",
idx);
error = ERANGE;
break;
}
buf = endp;
if (*buf++ != ':') {
device_printf(adapter->pdev, "Missing ':' separator\n");
error = EINVAL;
break;
}
value = strtol(buf, &endp, 10);
if (endp == buf || value < 0) {
device_printf(adapter->pdev, "Invalid value: %s\n",
buf);
error = EINVAL;
break;
}
if (value >= num_queues) {
device_printf(adapter->pdev, "Value %d out of range\n",
value);
error = ERANGE;
break;
}
indir->table[idx] = value;
}
if (error != 0) /* Reload indirection table with last good data. */
ena_rss_indir_get(adapter, indir->table);
/* At this point msg has been clobbered by sysctl_handle_string. */
ena_rss_copy_indir_buf(msg, indir->table);
if (error == 0)
error = ena_rss_indir_set(adapter, indir->table);
unlock:
ENA_LOCK_UNLOCK();
return (error);
}
#endif /* RSS */