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freebsd-skq/sys/dev/ena/ena_sysctl.c

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Add support for Amazon Elastic Network Adapter (ENA) NIC ENA is a networking interface designed to make good use of modern CPU features and system architectures. The ENA device exposes a lightweight management interface with a minimal set of memory mapped registers and extendable command set through an Admin Queue. The driver supports a range of ENA devices, is link-speed independent (i.e., the same driver is used for 10GbE, 25GbE, 40GbE, etc.), and has a negotiated and extendable feature set. Some ENA devices support SR-IOV. This driver is used for both the SR-IOV Physical Function (PF) and Virtual Function (VF) devices. ENA devices enable high speed and low overhead network traffic processing by providing multiple Tx/Rx queue pairs (the maximum number is advertised by the device via the Admin Queue), a dedicated MSI-X interrupt vector per Tx/Rx queue pair, and CPU cacheline optimized data placement. The ENA driver supports industry standard TCP/IP offload features such as checksum offload and TCP transmit segmentation offload (TSO). Receive-side scaling (RSS) is supported for multi-core scaling. The ENA driver and its corresponding devices implement health monitoring mechanisms such as watchdog, enabling the device and driver to recover in a manner transparent to the application, as well as debug logs. Some of the ENA devices support a working mode called Low-latency Queue (LLQ), which saves several more microseconds. This feature will be implemented for driver in future releases. Submitted by: Michal Krawczyk <mk@semihalf.com> Jakub Palider <jpa@semihalf.com> Jan Medala <jan@semihalf.com> Obtained from: Semihalf Sponsored by: Amazon.com Inc. Differential revision: https://reviews.freebsd.org/D10427
2017-05-22 14:46:13 +00:00
/*-
* 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 int ena_sysctl_update_stats(SYSCTL_HANDLER_ARGS);
static void ena_sysctl_add_stats(struct ena_adapter *);
void
ena_sysctl_add_nodes(struct ena_adapter *adapter)
{
ena_sysctl_add_stats(adapter);
}
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, "tx_timeout",
CTLFLAG_RD, &dev_stats->tx_timeout,
"Driver TX timeouts");
SYSCTL_ADD_COUNTER_U64(ctx, child, OID_AUTO, "io_suspend",
CTLFLAG_RD, &dev_stats->io_suspend,
"IO queue suspends");
SYSCTL_ADD_COUNTER_U64(ctx, child, OID_AUTO, "io_resume",
CTLFLAG_RD, &dev_stats->io_resume,
"IO queue resumes");
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,
"queue_wakeup", CTLFLAG_RD,
&tx_stats->queue_wakeup, "Queue wakeups");
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,
"unsupported_desc_num", CTLFLAG_RD,
&tx_stats->unsupported_desc_num,
"Excessive descriptor packet discards");
SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
"napi_comp", CTLFLAG_RD,
&tx_stats->napi_comp, "Napi completions");
SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
"tx_poll", CTLFLAG_RD,
&tx_stats->tx_poll, "TX poll count");
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,
"stops", CTLFLAG_RD,
&tx_stats->queue_stop, "Queue stops");
/* 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,
"page_alloc_fail", CTLFLAG_RD,
&rx_stats->page_alloc_fail, "Failed page allocs");
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,
"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,
"small_copy_len_pkt", CTLFLAG_RD,
&rx_stats->small_copy_len_pkt, "Small copy packet 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_U64(ctx, hw_list, OID_AUTO, "rx_packets", CTLFLAG_RD,
&hw_stats->rx_packets, 0, "Packets received");
SYSCTL_ADD_U64(ctx, hw_list, OID_AUTO, "tx_packets", CTLFLAG_RD,
&hw_stats->tx_packets, 0, "Packets transmitted");
SYSCTL_ADD_U64(ctx, hw_list, OID_AUTO, "rx_bytes", CTLFLAG_RD,
&hw_stats->rx_bytes, 0, "Bytes received");
SYSCTL_ADD_U64(ctx, hw_list, OID_AUTO, "tx_bytes", CTLFLAG_RD,
&hw_stats->tx_bytes, 0, "Bytes transmitted");
SYSCTL_ADD_U64(ctx, hw_list, OID_AUTO, "rx_drops", CTLFLAG_RD,
&hw_stats->rx_drops, 0, "Receive packet drops");
SYSCTL_ADD_PROC(ctx, hw_list, OID_AUTO, "update_stats",
CTLTYPE_INT|CTLFLAG_RD, adapter, 0, ena_sysctl_update_stats,
"A", "Update stats from hardware");
/* 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");
}
static int
ena_sysctl_update_stats(SYSCTL_HANDLER_ARGS)
{
struct ena_adapter *adapter = (struct ena_adapter *)arg1;
int rc;
if (adapter->up)
ena_update_stats_counters(adapter);
rc = sysctl_handle_string(oidp, "", 1, req);
return (rc);
}
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