sys/dev/ena/ena_sysctl.c

   1 /*-
   2  * BSD LICENSE
   3  *
   4  * Copyright (c) 2015-2017 Amazon.com, Inc. or its affiliates.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  *
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  *
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29  */
  30 #include <sys/cdefs.h>
  31 __FBSDID("$FreeBSD$");
  32
  33 #include "ena_sysctl.h"
  34
  35 static void     ena_sysctl_add_wd(struct ena_adapter *);
  36 static void     ena_sysctl_add_stats(struct ena_adapter *);
  37 static void     ena_sysctl_add_tuneables(struct ena_adapter *);
  38 static int      ena_sysctl_buf_ring_size(SYSCTL_HANDLER_ARGS);
  39 static int      ena_sysctl_rx_queue_size(SYSCTL_HANDLER_ARGS);
  40
  41 static SYSCTL_NODE(_hw, OID_AUTO, ena, CTLFLAG_RD, 0, "ENA driver parameters");
  42
  43 /*
  44  * Logging level for changing verbosity of the output
  45  */
  46 int ena_log_level = ENA_ALERT | ENA_WARNING;
  47 SYSCTL_INT(_hw_ena, OID_AUTO, log_level, CTLFLAG_RWTUN,
  48     &ena_log_level, 0, "Logging level indicating verbosity of the logs");
  49
  50
  51 void
  52 ena_sysctl_add_nodes(struct ena_adapter *adapter)
  53 {
  54         ena_sysctl_add_wd(adapter);
  55         ena_sysctl_add_stats(adapter);
  56         ena_sysctl_add_tuneables(adapter);
  57 }
  58
  59 static void
  60 ena_sysctl_add_wd(struct ena_adapter *adapter)
  61 {
  62         device_t dev;
  63
  64         struct sysctl_ctx_list *ctx;
  65         struct sysctl_oid *tree;
  66         struct sysctl_oid_list *child;
  67
  68         dev = adapter->pdev;
  69
  70         ctx = device_get_sysctl_ctx(dev);
  71         tree = device_get_sysctl_tree(dev);
  72         child = SYSCTL_CHILDREN(tree);
  73
  74         /* Sysctl calls for Watchdog service */
  75         SYSCTL_ADD_INT(ctx, child, OID_AUTO, "wd_active",
  76             CTLFLAG_RWTUN, &adapter->wd_active, 0,
  77             "Watchdog is active");
  78
  79         SYSCTL_ADD_QUAD(ctx, child, OID_AUTO, "keep_alive_timeout",
  80             CTLFLAG_RWTUN, &adapter->keep_alive_timeout,
  81             "Timeout for Keep Alive messages");
  82
  83         SYSCTL_ADD_QUAD(ctx, child, OID_AUTO, "missing_tx_timeout",
  84             CTLFLAG_RWTUN, &adapter->missing_tx_timeout,
  85             "Timeout for TX completion");
  86
  87         SYSCTL_ADD_U32(ctx, child, OID_AUTO, "missing_tx_max_queues",
  88             CTLFLAG_RWTUN, &adapter->missing_tx_max_queues, 0,
  89             "Number of TX queues to check per run");
  90
  91         SYSCTL_ADD_U32(ctx, child, OID_AUTO, "missing_tx_threshold",
  92             CTLFLAG_RWTUN, &adapter->missing_tx_threshold, 0,
  93             "Max number of timeouted packets");
  94 }
  95
  96 static void
  97 ena_sysctl_add_stats(struct ena_adapter *adapter)
  98 {
  99         device_t dev;
 100
 101         struct ena_ring *tx_ring;
 102         struct ena_ring *rx_ring;
 103
 104         struct ena_hw_stats *hw_stats;
 105         struct ena_stats_dev *dev_stats;
 106         struct ena_stats_tx *tx_stats;
 107         struct ena_stats_rx *rx_stats;
 108         struct ena_com_stats_admin *admin_stats;
 109
 110         struct sysctl_ctx_list *ctx;
 111         struct sysctl_oid *tree;
 112         struct sysctl_oid_list *child;
 113
 114         struct sysctl_oid *queue_node, *tx_node, *rx_node, *hw_node;
 115         struct sysctl_oid *admin_node;
 116         struct sysctl_oid_list *queue_list, *tx_list, *rx_list, *hw_list;
 117         struct sysctl_oid_list *admin_list;
 118
 119 #define QUEUE_NAME_LEN 32
 120         char namebuf[QUEUE_NAME_LEN];
 121         int i;
 122
 123         dev = adapter->pdev;
 124
 125         ctx = device_get_sysctl_ctx(dev);
 126         tree = device_get_sysctl_tree(dev);
 127         child = SYSCTL_CHILDREN(tree);
 128
 129         tx_ring = adapter->tx_ring;
 130         rx_ring = adapter->rx_ring;
 131
 132         hw_stats = &adapter->hw_stats;
 133         dev_stats = &adapter->dev_stats;
 134         admin_stats = &adapter->ena_dev->admin_queue.stats;
 135
 136         SYSCTL_ADD_COUNTER_U64(ctx, child, OID_AUTO, "wd_expired",
 137             CTLFLAG_RD, &dev_stats->wd_expired,
 138             "Watchdog expiry count");
 139         SYSCTL_ADD_COUNTER_U64(ctx, child, OID_AUTO, "interface_up",
 140             CTLFLAG_RD, &dev_stats->interface_up,
 141             "Network interface up count");
 142         SYSCTL_ADD_COUNTER_U64(ctx, child, OID_AUTO, "interface_down",
 143             CTLFLAG_RD, &dev_stats->interface_down,
 144             "Network interface down count");
 145         SYSCTL_ADD_COUNTER_U64(ctx, child, OID_AUTO, "admin_q_pause",
 146             CTLFLAG_RD, &dev_stats->admin_q_pause,
 147             "Admin queue pauses");
 148
 149         for (i = 0; i < adapter->num_queues; ++i, ++tx_ring, ++rx_ring) {
 150                 snprintf(namebuf, QUEUE_NAME_LEN, "queue%d", i);
 151
 152                 queue_node = SYSCTL_ADD_NODE(ctx, child, OID_AUTO,
 153                     namebuf, CTLFLAG_RD, NULL, "Queue Name");
 154                 queue_list = SYSCTL_CHILDREN(queue_node);
 155
 156                 /* TX specific stats */
 157                 tx_node = SYSCTL_ADD_NODE(ctx, queue_list, OID_AUTO,
 158                     "tx_ring", CTLFLAG_RD, NULL, "TX ring");
 159                 tx_list = SYSCTL_CHILDREN(tx_node);
 160
 161                 tx_stats = &tx_ring->tx_stats;
 162
 163                 SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
 164                     "count", CTLFLAG_RD,
 165                     &tx_stats->cnt, "Packets sent");
 166                 SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
 167                     "bytes", CTLFLAG_RD,
 168                     &tx_stats->bytes, "Bytes sent");
 169                 SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
 170                     "prepare_ctx_err", CTLFLAG_RD,
 171                     &tx_stats->prepare_ctx_err,
 172                     "TX buffer preparation failures");
 173                 SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
 174                     "dma_mapping_err", CTLFLAG_RD,
 175                     &tx_stats->dma_mapping_err, "DMA mapping failures");
 176                 SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
 177                     "doorbells", CTLFLAG_RD,
 178                     &tx_stats->doorbells, "Queue doorbells");
 179                 SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
 180                     "missing_tx_comp", CTLFLAG_RD,
 181                     &tx_stats->missing_tx_comp, "TX completions missed");
 182                 SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
 183                     "bad_req_id", CTLFLAG_RD,
 184                     &tx_stats->bad_req_id, "Bad request id count");
 185                 SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
 186                         "mbuf_collapses", CTLFLAG_RD,
 187                         &tx_stats->collapse,
 188                         "Mbuf collapse count");
 189                 SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
 190                         "mbuf_collapse_err", CTLFLAG_RD,
 191                         &tx_stats->collapse_err,
 192                         "Mbuf collapse failures");
 193                 SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
 194                     "queue_wakeups", CTLFLAG_RD,
 195                     &tx_stats->queue_wakeup, "Queue wakeups");
 196                 SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
 197                     "queue_stops", CTLFLAG_RD,
 198                     &tx_stats->queue_stop, "Queue stops");
 199                 SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
 200                     "llq_buffer_copy", CTLFLAG_RD,
 201                     &tx_stats->llq_buffer_copy,
 202                     "Header copies for llq transaction");
 203
 204                 /* RX specific stats */
 205                 rx_node = SYSCTL_ADD_NODE(ctx, queue_list, OID_AUTO,
 206                     "rx_ring", CTLFLAG_RD, NULL, "RX ring");
 207                 rx_list = SYSCTL_CHILDREN(rx_node);
 208
 209                 rx_stats = &rx_ring->rx_stats;
 210
 211                 SYSCTL_ADD_COUNTER_U64(ctx, rx_list, OID_AUTO,
 212                     "count", CTLFLAG_RD,
 213                     &rx_stats->cnt, "Packets received");
 214                 SYSCTL_ADD_COUNTER_U64(ctx, rx_list, OID_AUTO,
 215                     "bytes", CTLFLAG_RD,
 216                     &rx_stats->bytes, "Bytes received");
 217                 SYSCTL_ADD_COUNTER_U64(ctx, rx_list, OID_AUTO,
 218                     "refil_partial", CTLFLAG_RD,
 219                     &rx_stats->refil_partial, "Partial refilled mbufs");
 220                 SYSCTL_ADD_COUNTER_U64(ctx, rx_list, OID_AUTO,
 221                     "bad_csum", CTLFLAG_RD,
 222                     &rx_stats->bad_csum, "Bad RX checksum");
 223                 SYSCTL_ADD_COUNTER_U64(ctx, rx_list, OID_AUTO,
 224                     "mbuf_alloc_fail", CTLFLAG_RD,
 225                     &rx_stats->mbuf_alloc_fail, "Failed mbuf allocs");
 226                 SYSCTL_ADD_COUNTER_U64(ctx, rx_list, OID_AUTO,
 227                     "mjum_alloc_fail", CTLFLAG_RD,
 228                     &rx_stats->mjum_alloc_fail, "Failed jumbo mbuf allocs");
 229                 SYSCTL_ADD_COUNTER_U64(ctx, rx_list, OID_AUTO,
 230                     "dma_mapping_err", CTLFLAG_RD,
 231                     &rx_stats->dma_mapping_err, "DMA mapping errors");
 232                 SYSCTL_ADD_COUNTER_U64(ctx, rx_list, OID_AUTO,
 233                     "bad_desc_num", CTLFLAG_RD,
 234                     &rx_stats->bad_desc_num, "Bad descriptor count");
 235                 SYSCTL_ADD_COUNTER_U64(ctx, rx_list, OID_AUTO,
 236                     "bad_req_id", CTLFLAG_RD,
 237                     &rx_stats->bad_req_id, "Bad request id count");
 238                 SYSCTL_ADD_COUNTER_U64(ctx, rx_list, OID_AUTO,
 239                     "empty_rx_ring", CTLFLAG_RD,
 240                     &rx_stats->empty_rx_ring, "RX descriptors depletion count");
 241         }
 242
 243         /* Stats read from device */
 244         hw_node = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "hw_stats",
 245             CTLFLAG_RD, NULL, "Statistics from hardware");
 246         hw_list = SYSCTL_CHILDREN(hw_node);
 247
 248         SYSCTL_ADD_COUNTER_U64(ctx, hw_list, OID_AUTO, "rx_packets", CTLFLAG_RD,
 249             &hw_stats->rx_packets, "Packets received");
 250         SYSCTL_ADD_COUNTER_U64(ctx, hw_list, OID_AUTO, "tx_packets", CTLFLAG_RD,
 251             &hw_stats->tx_packets, "Packets transmitted");
 252         SYSCTL_ADD_COUNTER_U64(ctx, hw_list, OID_AUTO, "rx_bytes", CTLFLAG_RD,
 253             &hw_stats->rx_bytes, "Bytes received");
 254         SYSCTL_ADD_COUNTER_U64(ctx, hw_list, OID_AUTO, "tx_bytes", CTLFLAG_RD,
 255             &hw_stats->tx_bytes, "Bytes transmitted");
 256         SYSCTL_ADD_COUNTER_U64(ctx, hw_list, OID_AUTO, "rx_drops", CTLFLAG_RD,
 257             &hw_stats->rx_drops, "Receive packet drops");
 258
 259         /* ENA Admin queue stats */
 260         admin_node = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "admin_stats",
 261             CTLFLAG_RD, NULL, "ENA Admin Queue statistics");
 262         admin_list = SYSCTL_CHILDREN(admin_node);
 263
 264         SYSCTL_ADD_U32(ctx, admin_list, OID_AUTO, "aborted_cmd", CTLFLAG_RD,
 265             &admin_stats->aborted_cmd, 0, "Aborted commands");
 266         SYSCTL_ADD_U32(ctx, admin_list, OID_AUTO, "sumbitted_cmd", CTLFLAG_RD,
 267             &admin_stats->submitted_cmd, 0, "Submitted commands");
 268         SYSCTL_ADD_U32(ctx, admin_list, OID_AUTO, "completed_cmd", CTLFLAG_RD,
 269             &admin_stats->completed_cmd, 0, "Completed commands");
 270         SYSCTL_ADD_U32(ctx, admin_list, OID_AUTO, "out_of_space", CTLFLAG_RD,
 271             &admin_stats->out_of_space, 0, "Queue out of space");
 272         SYSCTL_ADD_U32(ctx, admin_list, OID_AUTO, "no_completion", CTLFLAG_RD,
 273             &admin_stats->no_completion, 0, "Commands not completed");
 274 }
 275
 276 static void
 277 ena_sysctl_add_tuneables(struct ena_adapter *adapter)
 278 {
 279         device_t dev;
 280
 281         struct sysctl_ctx_list *ctx;
 282         struct sysctl_oid *tree;
 283         struct sysctl_oid_list *child;
 284
 285         dev = adapter->pdev;
 286
 287         ctx = device_get_sysctl_ctx(dev);
 288         tree = device_get_sysctl_tree(dev);
 289         child = SYSCTL_CHILDREN(tree);
 290
 291         /* Tuneable number of buffers in the buf-ring (drbr) */
 292         SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "buf_ring_size", CTLTYPE_INT |
 293             CTLFLAG_RW, adapter, 0, ena_sysctl_buf_ring_size, "I",
 294             "Size of the bufring");
 295
 296         /* Tuneable number of Rx ring size */
 297         SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "rx_queue_size", CTLTYPE_INT |
 298             CTLFLAG_RW, adapter, 0, ena_sysctl_rx_queue_size, "I",
 299             "Size of the Rx ring. The size should be a power of 2. "
 300             "Max value is 8K");
 301 }
 302
 303
 304 static int
 305 ena_sysctl_buf_ring_size(SYSCTL_HANDLER_ARGS)
 306 {
 307         struct ena_adapter *adapter = arg1;
 308         int val;
 309         int error;
 310
 311         val = 0;
 312         error = sysctl_wire_old_buffer(req, sizeof(int));
 313         if (error == 0) {
 314                 val = adapter->buf_ring_size;
 315                 error = sysctl_handle_int(oidp, &val, 0, req);
 316         }
 317         if (error != 0 || req->newptr == NULL)
 318                 return (error);
 319         if (val < 0)
 320                 return (EINVAL);
 321
 322         device_printf(adapter->pdev,
 323             "Requested new buf ring size: %d. Old size: %d\n",
 324             val, adapter->buf_ring_size);
 325
 326         if (val != adapter->buf_ring_size) {
 327                 adapter->buf_ring_size = val;
 328                 adapter->reset_reason = ENA_REGS_RESET_OS_TRIGGER;
 329                 ENA_FLAG_SET_ATOMIC(ENA_FLAG_TRIGGER_RESET, adapter);
 330         }
 331
 332         return (0);
 333 }
 334
 335 static int
 336 ena_sysctl_rx_queue_size(SYSCTL_HANDLER_ARGS)
 337 {
 338         struct ena_adapter *adapter = arg1;
 339         int val;
 340         int error;
 341
 342         val = 0;
 343         error = sysctl_wire_old_buffer(req, sizeof(int));
 344         if (error == 0) {
 345                 val = adapter->rx_ring_size;
 346                 error = sysctl_handle_int(oidp, &val, 0, req);
 347         }
 348         if (error != 0 || req->newptr == NULL)
 349                 return (error);
 350         if  (val < 16)
 351                 return (EINVAL);
 352
 353         device_printf(adapter->pdev,
 354             "Requested new rx queue size: %d. Old size: %d\n",
 355             val, adapter->rx_ring_size);
 356
 357         if (val != adapter->rx_ring_size) {
 358                 adapter->rx_ring_size = val;
 359                 adapter->reset_reason = ENA_REGS_RESET_OS_TRIGGER;
 360                 ENA_FLAG_SET_ATOMIC(ENA_FLAG_TRIGGER_RESET, adapter);
 361         }
 362
 363         return (0);
 364 }