sys/dev/ena/ena_sysctl.c

   1 /*-
   2  * BSD LICENSE
   3  *
   4  * Copyright (c) 2015-2019 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 | CTLFLAG_MPSAFE, 0,
  42     "ENA driver parameters");
  43
  44 /*
  45  * Logging level for changing verbosity of the output
  46  */
  47 int ena_log_level = ENA_ALERT | ENA_WARNING;
  48 SYSCTL_INT(_hw_ena, OID_AUTO, log_level, CTLFLAG_RWTUN,
  49     &ena_log_level, 0, "Logging level indicating verbosity of the logs");
  50
  51
  52 void
  53 ena_sysctl_add_nodes(struct ena_adapter *adapter)
  54 {
  55         ena_sysctl_add_wd(adapter);
  56         ena_sysctl_add_stats(adapter);
  57         ena_sysctl_add_tuneables(adapter);
  58 }
  59
  60 static void
  61 ena_sysctl_add_wd(struct ena_adapter *adapter)
  62 {
  63         device_t dev;
  64
  65         struct sysctl_ctx_list *ctx;
  66         struct sysctl_oid *tree;
  67         struct sysctl_oid_list *child;
  68
  69         dev = adapter->pdev;
  70
  71         ctx = device_get_sysctl_ctx(dev);
  72         tree = device_get_sysctl_tree(dev);
  73         child = SYSCTL_CHILDREN(tree);
  74
  75         /* Sysctl calls for Watchdog service */
  76         SYSCTL_ADD_INT(ctx, child, OID_AUTO, "wd_active",
  77             CTLFLAG_RWTUN, &adapter->wd_active, 0,
  78             "Watchdog is active");
  79
  80         SYSCTL_ADD_QUAD(ctx, child, OID_AUTO, "keep_alive_timeout",
  81             CTLFLAG_RWTUN, &adapter->keep_alive_timeout,
  82             "Timeout for Keep Alive messages");
  83
  84         SYSCTL_ADD_QUAD(ctx, child, OID_AUTO, "missing_tx_timeout",
  85             CTLFLAG_RWTUN, &adapter->missing_tx_timeout,
  86             "Timeout for TX completion");
  87
  88         SYSCTL_ADD_U32(ctx, child, OID_AUTO, "missing_tx_max_queues",
  89             CTLFLAG_RWTUN, &adapter->missing_tx_max_queues, 0,
  90             "Number of TX queues to check per run");
  91
  92         SYSCTL_ADD_U32(ctx, child, OID_AUTO, "missing_tx_threshold",
  93             CTLFLAG_RWTUN, &adapter->missing_tx_threshold, 0,
  94             "Max number of timeouted packets");
  95 }
  96
  97 static void
  98 ena_sysctl_add_stats(struct ena_adapter *adapter)
  99 {
 100         device_t dev;
 101
 102         struct ena_ring *tx_ring;
 103         struct ena_ring *rx_ring;
 104
 105         struct ena_hw_stats *hw_stats;
 106         struct ena_stats_dev *dev_stats;
 107         struct ena_stats_tx *tx_stats;
 108         struct ena_stats_rx *rx_stats;
 109         struct ena_com_stats_admin *admin_stats;
 110
 111         struct sysctl_ctx_list *ctx;
 112         struct sysctl_oid *tree;
 113         struct sysctl_oid_list *child;
 114
 115         struct sysctl_oid *queue_node, *tx_node, *rx_node, *hw_node;
 116         struct sysctl_oid *admin_node;
 117         struct sysctl_oid_list *queue_list, *tx_list, *rx_list, *hw_list;
 118         struct sysctl_oid_list *admin_list;
 119
 120 #define QUEUE_NAME_LEN 32
 121         char namebuf[QUEUE_NAME_LEN];
 122         int i;
 123
 124         dev = adapter->pdev;
 125
 126         ctx = device_get_sysctl_ctx(dev);
 127         tree = device_get_sysctl_tree(dev);
 128         child = SYSCTL_CHILDREN(tree);
 129
 130         tx_ring = adapter->tx_ring;
 131         rx_ring = adapter->rx_ring;
 132
 133         hw_stats = &adapter->hw_stats;
 134         dev_stats = &adapter->dev_stats;
 135         admin_stats = &adapter->ena_dev->admin_queue.stats;
 136
 137         SYSCTL_ADD_COUNTER_U64(ctx, child, OID_AUTO, "wd_expired",
 138             CTLFLAG_RD, &dev_stats->wd_expired,
 139             "Watchdog expiry count");
 140         SYSCTL_ADD_COUNTER_U64(ctx, child, OID_AUTO, "interface_up",
 141             CTLFLAG_RD, &dev_stats->interface_up,
 142             "Network interface up count");
 143         SYSCTL_ADD_COUNTER_U64(ctx, child, OID_AUTO, "interface_down",
 144             CTLFLAG_RD, &dev_stats->interface_down,
 145             "Network interface down count");
 146         SYSCTL_ADD_COUNTER_U64(ctx, child, OID_AUTO, "admin_q_pause",
 147             CTLFLAG_RD, &dev_stats->admin_q_pause,
 148             "Admin queue pauses");
 149
 150         for (i = 0; i < adapter->num_queues; ++i, ++tx_ring, ++rx_ring) {
 151                 snprintf(namebuf, QUEUE_NAME_LEN, "queue%d", i);
 152
 153                 queue_node = SYSCTL_ADD_NODE(ctx, child, OID_AUTO,
 154                     namebuf, CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, "Queue Name");
 155                 queue_list = SYSCTL_CHILDREN(queue_node);
 156
 157                 /* TX specific stats */
 158                 tx_node = SYSCTL_ADD_NODE(ctx, queue_list, OID_AUTO,
 159                     "tx_ring", CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, "TX ring");
 160                 tx_list = SYSCTL_CHILDREN(tx_node);
 161
 162                 tx_stats = &tx_ring->tx_stats;
 163
 164                 SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
 165                     "count", CTLFLAG_RD,
 166                     &tx_stats->cnt, "Packets sent");
 167                 SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
 168                     "bytes", CTLFLAG_RD,
 169                     &tx_stats->bytes, "Bytes sent");
 170                 SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
 171                     "prepare_ctx_err", CTLFLAG_RD,
 172                     &tx_stats->prepare_ctx_err,
 173                     "TX buffer preparation failures");
 174                 SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
 175                     "dma_mapping_err", CTLFLAG_RD,
 176                     &tx_stats->dma_mapping_err, "DMA mapping failures");
 177                 SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
 178                     "doorbells", CTLFLAG_RD,
 179                     &tx_stats->doorbells, "Queue doorbells");
 180                 SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
 181                     "missing_tx_comp", CTLFLAG_RD,
 182                     &tx_stats->missing_tx_comp, "TX completions missed");
 183                 SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
 184                     "bad_req_id", CTLFLAG_RD,
 185                     &tx_stats->bad_req_id, "Bad request id count");
 186                 SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
 187                         "mbuf_collapses", CTLFLAG_RD,
 188                         &tx_stats->collapse,
 189                         "Mbuf collapse count");
 190                 SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
 191                         "mbuf_collapse_err", CTLFLAG_RD,
 192                         &tx_stats->collapse_err,
 193                         "Mbuf collapse failures");
 194                 SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
 195                     "queue_wakeups", CTLFLAG_RD,
 196                     &tx_stats->queue_wakeup, "Queue wakeups");
 197                 SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
 198                     "queue_stops", CTLFLAG_RD,
 199                     &tx_stats->queue_stop, "Queue stops");
 200                 SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
 201                     "llq_buffer_copy", CTLFLAG_RD,
 202                     &tx_stats->llq_buffer_copy,
 203                     "Header copies for llq transaction");
 204
 205                 /* RX specific stats */
 206                 rx_node = SYSCTL_ADD_NODE(ctx, queue_list, OID_AUTO,
 207                     "rx_ring", CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, "RX ring");
 208                 rx_list = SYSCTL_CHILDREN(rx_node);
 209
 210                 rx_stats = &rx_ring->rx_stats;
 211
 212                 SYSCTL_ADD_COUNTER_U64(ctx, rx_list, OID_AUTO,
 213                     "count", CTLFLAG_RD,
 214                     &rx_stats->cnt, "Packets received");
 215                 SYSCTL_ADD_COUNTER_U64(ctx, rx_list, OID_AUTO,
 216                     "bytes", CTLFLAG_RD,
 217                     &rx_stats->bytes, "Bytes received");
 218                 SYSCTL_ADD_COUNTER_U64(ctx, rx_list, OID_AUTO,
 219                     "refil_partial", CTLFLAG_RD,
 220                     &rx_stats->refil_partial, "Partial refilled mbufs");
 221                 SYSCTL_ADD_COUNTER_U64(ctx, rx_list, OID_AUTO,
 222                     "bad_csum", CTLFLAG_RD,
 223                     &rx_stats->bad_csum, "Bad RX checksum");
 224                 SYSCTL_ADD_COUNTER_U64(ctx, rx_list, OID_AUTO,
 225                     "mbuf_alloc_fail", CTLFLAG_RD,
 226                     &rx_stats->mbuf_alloc_fail, "Failed mbuf allocs");
 227                 SYSCTL_ADD_COUNTER_U64(ctx, rx_list, OID_AUTO,
 228                     "mjum_alloc_fail", CTLFLAG_RD,
 229                     &rx_stats->mjum_alloc_fail, "Failed jumbo mbuf allocs");
 230                 SYSCTL_ADD_COUNTER_U64(ctx, rx_list, OID_AUTO,
 231                     "dma_mapping_err", CTLFLAG_RD,
 232                     &rx_stats->dma_mapping_err, "DMA mapping errors");
 233                 SYSCTL_ADD_COUNTER_U64(ctx, rx_list, OID_AUTO,
 234                     "bad_desc_num", CTLFLAG_RD,
 235                     &rx_stats->bad_desc_num, "Bad descriptor count");
 236                 SYSCTL_ADD_COUNTER_U64(ctx, rx_list, OID_AUTO,
 237                     "bad_req_id", CTLFLAG_RD,
 238                     &rx_stats->bad_req_id, "Bad request id count");
 239                 SYSCTL_ADD_COUNTER_U64(ctx, rx_list, OID_AUTO,
 240                     "empty_rx_ring", CTLFLAG_RD,
 241                     &rx_stats->empty_rx_ring, "RX descriptors depletion count");
 242         }
 243
 244         /* Stats read from device */
 245         hw_node = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "hw_stats",
 246             CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, "Statistics from hardware");
 247         hw_list = SYSCTL_CHILDREN(hw_node);
 248
 249         SYSCTL_ADD_COUNTER_U64(ctx, hw_list, OID_AUTO, "rx_packets", CTLFLAG_RD,
 250             &hw_stats->rx_packets, "Packets received");
 251         SYSCTL_ADD_COUNTER_U64(ctx, hw_list, OID_AUTO, "tx_packets", CTLFLAG_RD,
 252             &hw_stats->tx_packets, "Packets transmitted");
 253         SYSCTL_ADD_COUNTER_U64(ctx, hw_list, OID_AUTO, "rx_bytes", CTLFLAG_RD,
 254             &hw_stats->rx_bytes, "Bytes received");
 255         SYSCTL_ADD_COUNTER_U64(ctx, hw_list, OID_AUTO, "tx_bytes", CTLFLAG_RD,
 256             &hw_stats->tx_bytes, "Bytes transmitted");
 257         SYSCTL_ADD_COUNTER_U64(ctx, hw_list, OID_AUTO, "rx_drops", CTLFLAG_RD,
 258             &hw_stats->rx_drops, "Receive packet drops");
 259
 260         /* ENA Admin queue stats */
 261         admin_node = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "admin_stats",
 262             CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, "ENA Admin Queue statistics");
 263         admin_list = SYSCTL_CHILDREN(admin_node);
 264
 265         SYSCTL_ADD_U32(ctx, admin_list, OID_AUTO, "aborted_cmd", CTLFLAG_RD,
 266             &admin_stats->aborted_cmd, 0, "Aborted commands");
 267         SYSCTL_ADD_U32(ctx, admin_list, OID_AUTO, "sumbitted_cmd", CTLFLAG_RD,
 268             &admin_stats->submitted_cmd, 0, "Submitted commands");
 269         SYSCTL_ADD_U32(ctx, admin_list, OID_AUTO, "completed_cmd", CTLFLAG_RD,
 270             &admin_stats->completed_cmd, 0, "Completed commands");
 271         SYSCTL_ADD_U32(ctx, admin_list, OID_AUTO, "out_of_space", CTLFLAG_RD,
 272             &admin_stats->out_of_space, 0, "Queue out of space");
 273         SYSCTL_ADD_U32(ctx, admin_list, OID_AUTO, "no_completion", CTLFLAG_RD,
 274             &admin_stats->no_completion, 0, "Commands not completed");
 275 }
 276
 277 static void
 278 ena_sysctl_add_tuneables(struct ena_adapter *adapter)
 279 {
 280         device_t dev;
 281
 282         struct sysctl_ctx_list *ctx;
 283         struct sysctl_oid *tree;
 284         struct sysctl_oid_list *child;
 285
 286         dev = adapter->pdev;
 287
 288         ctx = device_get_sysctl_ctx(dev);
 289         tree = device_get_sysctl_tree(dev);
 290         child = SYSCTL_CHILDREN(tree);
 291
 292         /* Tuneable number of buffers in the buf-ring (drbr) */
 293         SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "buf_ring_size",
 294             CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, adapter, 0,
 295             ena_sysctl_buf_ring_size, "I", "Size of the bufring");
 296
 297         /* Tuneable number of Rx ring size */
 298         SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "rx_queue_size",
 299             CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, adapter, 0,
 300             ena_sysctl_rx_queue_size, "I", "Size of the Rx ring. "
 301             "The size should be a power of 2. Max value is 8K");
 302 }
 303
 304
 305 static int
 306 ena_sysctl_buf_ring_size(SYSCTL_HANDLER_ARGS)
 307 {
 308         struct ena_adapter *adapter = arg1;
 309         int val;
 310         int error;
 311
 312         val = 0;
 313         error = sysctl_wire_old_buffer(req, sizeof(int));
 314         if (error == 0) {
 315                 val = adapter->buf_ring_size;
 316                 error = sysctl_handle_int(oidp, &val, 0, req);
 317         }
 318         if (error != 0 || req->newptr == NULL)
 319                 return (error);
 320         if (val < 0)
 321                 return (EINVAL);
 322
 323         device_printf(adapter->pdev,
 324             "Requested new buf ring size: %d. Old size: %d\n",
 325             val, adapter->buf_ring_size);
 326
 327         if (val != adapter->buf_ring_size) {
 328                 adapter->buf_ring_size = val;
 329                 adapter->reset_reason = ENA_REGS_RESET_OS_TRIGGER;
 330                 ENA_FLAG_SET_ATOMIC(ENA_FLAG_TRIGGER_RESET, adapter);
 331         }
 332
 333         return (0);
 334 }
 335
 336 static int
 337 ena_sysctl_rx_queue_size(SYSCTL_HANDLER_ARGS)
 338 {
 339         struct ena_adapter *adapter = arg1;
 340         int val;
 341         int error;
 342
 343         val = 0;
 344         error = sysctl_wire_old_buffer(req, sizeof(int));
 345         if (error == 0) {
 346                 val = adapter->rx_ring_size;
 347                 error = sysctl_handle_int(oidp, &val, 0, req);
 348         }
 349         if (error != 0 || req->newptr == NULL)
 350                 return (error);
 351         if  (val < 16)
 352                 return (EINVAL);
 353
 354         device_printf(adapter->pdev,
 355             "Requested new rx queue size: %d. Old size: %d\n",
 356             val, adapter->rx_ring_size);
 357
 358         if (val != adapter->rx_ring_size) {
 359                 adapter->rx_ring_size = val;
 360                 adapter->reset_reason = ENA_REGS_RESET_OS_TRIGGER;
 361                 ENA_FLAG_SET_ATOMIC(ENA_FLAG_TRIGGER_RESET, adapter);
 362         }
 363
 364         return (0);
 365 }