1 // SPDX-License-Identifier: GPL-2.0-only 2 /**************************************************************************** 3 * Driver for Solarflare network controllers and boards 4 * Copyright 2019 Solarflare Communications Inc. 5 * 6 * This program is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 as published 8 * by the Free Software Foundation, incorporated herein by reference. 9 */ 10 #include <linux/module.h> 11 #include <linux/netdevice.h> 12 #include "net_driver.h" 13 #include "mcdi.h" 14 #include "nic.h" 15 #include "selftest.h" 16 #include "ethtool_common.h" 17 18 struct efx_sw_stat_desc { 19 const char *name; 20 enum { 21 EFX_ETHTOOL_STAT_SOURCE_nic, 22 EFX_ETHTOOL_STAT_SOURCE_channel, 23 EFX_ETHTOOL_STAT_SOURCE_tx_queue 24 } source; 25 unsigned int offset; 26 u64 (*get_stat)(void *field); /* Reader function */ 27 }; 28 29 /* Initialiser for a struct efx_sw_stat_desc with type-checking */ 30 #define EFX_ETHTOOL_STAT(stat_name, source_name, field, field_type, \ 31 get_stat_function) { \ 32 .name = #stat_name, \ 33 .source = EFX_ETHTOOL_STAT_SOURCE_##source_name, \ 34 .offset = ((((field_type *) 0) == \ 35 &((struct efx_##source_name *)0)->field) ? \ 36 offsetof(struct efx_##source_name, field) : \ 37 offsetof(struct efx_##source_name, field)), \ 38 .get_stat = get_stat_function, \ 39 } 40 41 static u64 efx_get_uint_stat(void *field) 42 { 43 return *(unsigned int *)field; 44 } 45 46 static u64 efx_get_atomic_stat(void *field) 47 { 48 return atomic_read((atomic_t *) field); 49 } 50 51 #define EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(field) \ 52 EFX_ETHTOOL_STAT(field, nic, field, \ 53 atomic_t, efx_get_atomic_stat) 54 55 #define EFX_ETHTOOL_UINT_CHANNEL_STAT(field) \ 56 EFX_ETHTOOL_STAT(field, channel, n_##field, \ 57 unsigned int, efx_get_uint_stat) 58 #define EFX_ETHTOOL_UINT_CHANNEL_STAT_NO_N(field) \ 59 EFX_ETHTOOL_STAT(field, channel, field, \ 60 unsigned int, efx_get_uint_stat) 61 62 #define EFX_ETHTOOL_UINT_TXQ_STAT(field) \ 63 EFX_ETHTOOL_STAT(tx_##field, tx_queue, field, \ 64 unsigned int, efx_get_uint_stat) 65 66 static const struct efx_sw_stat_desc efx_sw_stat_desc[] = { 67 EFX_ETHTOOL_UINT_TXQ_STAT(merge_events), 68 EFX_ETHTOOL_UINT_TXQ_STAT(tso_bursts), 69 EFX_ETHTOOL_UINT_TXQ_STAT(tso_long_headers), 70 EFX_ETHTOOL_UINT_TXQ_STAT(tso_packets), 71 EFX_ETHTOOL_UINT_TXQ_STAT(tso_fallbacks), 72 EFX_ETHTOOL_UINT_TXQ_STAT(pushes), 73 EFX_ETHTOOL_UINT_TXQ_STAT(pio_packets), 74 EFX_ETHTOOL_UINT_TXQ_STAT(cb_packets), 75 EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(rx_reset), 76 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tobe_disc), 77 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_ip_hdr_chksum_err), 78 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tcp_udp_chksum_err), 79 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_inner_ip_hdr_chksum_err), 80 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_inner_tcp_udp_chksum_err), 81 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_outer_ip_hdr_chksum_err), 82 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_outer_tcp_udp_chksum_err), 83 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_eth_crc_err), 84 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_mcast_mismatch), 85 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_frm_trunc), 86 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_merge_events), 87 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_merge_packets), 88 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_xdp_drops), 89 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_xdp_bad_drops), 90 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_xdp_tx), 91 EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_xdp_redirect), 92 #ifdef CONFIG_RFS_ACCEL 93 EFX_ETHTOOL_UINT_CHANNEL_STAT_NO_N(rfs_filter_count), 94 EFX_ETHTOOL_UINT_CHANNEL_STAT(rfs_succeeded), 95 EFX_ETHTOOL_UINT_CHANNEL_STAT(rfs_failed), 96 #endif 97 }; 98 99 #define EFX_ETHTOOL_SW_STAT_COUNT ARRAY_SIZE(efx_sw_stat_desc) 100 101 void efx_ethtool_get_drvinfo(struct net_device *net_dev, 102 struct ethtool_drvinfo *info) 103 { 104 struct efx_nic *efx = netdev_priv(net_dev); 105 106 strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver)); 107 strlcpy(info->version, EFX_DRIVER_VERSION, sizeof(info->version)); 108 efx_mcdi_print_fwver(efx, info->fw_version, 109 sizeof(info->fw_version)); 110 strlcpy(info->bus_info, pci_name(efx->pci_dev), sizeof(info->bus_info)); 111 } 112 113 u32 efx_ethtool_get_msglevel(struct net_device *net_dev) 114 { 115 struct efx_nic *efx = netdev_priv(net_dev); 116 117 return efx->msg_enable; 118 } 119 120 void efx_ethtool_set_msglevel(struct net_device *net_dev, u32 msg_enable) 121 { 122 struct efx_nic *efx = netdev_priv(net_dev); 123 124 efx->msg_enable = msg_enable; 125 } 126 127 void efx_ethtool_get_pauseparam(struct net_device *net_dev, 128 struct ethtool_pauseparam *pause) 129 { 130 struct efx_nic *efx = netdev_priv(net_dev); 131 132 pause->rx_pause = !!(efx->wanted_fc & EFX_FC_RX); 133 pause->tx_pause = !!(efx->wanted_fc & EFX_FC_TX); 134 pause->autoneg = !!(efx->wanted_fc & EFX_FC_AUTO); 135 } 136 137 /** 138 * efx_fill_test - fill in an individual self-test entry 139 * @test_index: Index of the test 140 * @strings: Ethtool strings, or %NULL 141 * @data: Ethtool test results, or %NULL 142 * @test: Pointer to test result (used only if data != %NULL) 143 * @unit_format: Unit name format (e.g. "chan\%d") 144 * @unit_id: Unit id (e.g. 0 for "chan0") 145 * @test_format: Test name format (e.g. "loopback.\%s.tx.sent") 146 * @test_id: Test id (e.g. "PHYXS" for "loopback.PHYXS.tx_sent") 147 * 148 * Fill in an individual self-test entry. 149 */ 150 static void efx_fill_test(unsigned int test_index, u8 *strings, u64 *data, 151 int *test, const char *unit_format, int unit_id, 152 const char *test_format, const char *test_id) 153 { 154 char unit_str[ETH_GSTRING_LEN], test_str[ETH_GSTRING_LEN]; 155 156 /* Fill data value, if applicable */ 157 if (data) 158 data[test_index] = *test; 159 160 /* Fill string, if applicable */ 161 if (strings) { 162 if (strchr(unit_format, '%')) 163 snprintf(unit_str, sizeof(unit_str), 164 unit_format, unit_id); 165 else 166 strcpy(unit_str, unit_format); 167 snprintf(test_str, sizeof(test_str), test_format, test_id); 168 snprintf(strings + test_index * ETH_GSTRING_LEN, 169 ETH_GSTRING_LEN, 170 "%-6s %-24s", unit_str, test_str); 171 } 172 } 173 174 #define EFX_CHANNEL_NAME(_channel) "chan%d", _channel->channel 175 #define EFX_TX_QUEUE_NAME(_tx_queue) "txq%d", _tx_queue->queue 176 #define EFX_RX_QUEUE_NAME(_rx_queue) "rxq%d", _rx_queue->queue 177 #define EFX_LOOPBACK_NAME(_mode, _counter) \ 178 "loopback.%s." _counter, STRING_TABLE_LOOKUP(_mode, efx_loopback_mode) 179 180 /** 181 * efx_fill_loopback_test - fill in a block of loopback self-test entries 182 * @efx: Efx NIC 183 * @lb_tests: Efx loopback self-test results structure 184 * @mode: Loopback test mode 185 * @test_index: Starting index of the test 186 * @strings: Ethtool strings, or %NULL 187 * @data: Ethtool test results, or %NULL 188 * 189 * Fill in a block of loopback self-test entries. Return new test 190 * index. 191 */ 192 static int efx_fill_loopback_test(struct efx_nic *efx, 193 struct efx_loopback_self_tests *lb_tests, 194 enum efx_loopback_mode mode, 195 unsigned int test_index, 196 u8 *strings, u64 *data) 197 { 198 struct efx_channel *channel = 199 efx_get_channel(efx, efx->tx_channel_offset); 200 struct efx_tx_queue *tx_queue; 201 202 efx_for_each_channel_tx_queue(tx_queue, channel) { 203 efx_fill_test(test_index++, strings, data, 204 &lb_tests->tx_sent[tx_queue->queue], 205 EFX_TX_QUEUE_NAME(tx_queue), 206 EFX_LOOPBACK_NAME(mode, "tx_sent")); 207 efx_fill_test(test_index++, strings, data, 208 &lb_tests->tx_done[tx_queue->queue], 209 EFX_TX_QUEUE_NAME(tx_queue), 210 EFX_LOOPBACK_NAME(mode, "tx_done")); 211 } 212 efx_fill_test(test_index++, strings, data, 213 &lb_tests->rx_good, 214 "rx", 0, 215 EFX_LOOPBACK_NAME(mode, "rx_good")); 216 efx_fill_test(test_index++, strings, data, 217 &lb_tests->rx_bad, 218 "rx", 0, 219 EFX_LOOPBACK_NAME(mode, "rx_bad")); 220 221 return test_index; 222 } 223 224 /** 225 * efx_ethtool_fill_self_tests - get self-test details 226 * @efx: Efx NIC 227 * @tests: Efx self-test results structure, or %NULL 228 * @strings: Ethtool strings, or %NULL 229 * @data: Ethtool test results, or %NULL 230 * 231 * Get self-test number of strings, strings, and/or test results. 232 * Return number of strings (== number of test results). 233 * 234 * The reason for merging these three functions is to make sure that 235 * they can never be inconsistent. 236 */ 237 int efx_ethtool_fill_self_tests(struct efx_nic *efx, 238 struct efx_self_tests *tests, 239 u8 *strings, u64 *data) 240 { 241 struct efx_channel *channel; 242 unsigned int n = 0, i; 243 enum efx_loopback_mode mode; 244 245 efx_fill_test(n++, strings, data, &tests->phy_alive, 246 "phy", 0, "alive", NULL); 247 efx_fill_test(n++, strings, data, &tests->nvram, 248 "core", 0, "nvram", NULL); 249 efx_fill_test(n++, strings, data, &tests->interrupt, 250 "core", 0, "interrupt", NULL); 251 252 /* Event queues */ 253 efx_for_each_channel(channel, efx) { 254 efx_fill_test(n++, strings, data, 255 &tests->eventq_dma[channel->channel], 256 EFX_CHANNEL_NAME(channel), 257 "eventq.dma", NULL); 258 efx_fill_test(n++, strings, data, 259 &tests->eventq_int[channel->channel], 260 EFX_CHANNEL_NAME(channel), 261 "eventq.int", NULL); 262 } 263 264 efx_fill_test(n++, strings, data, &tests->memory, 265 "core", 0, "memory", NULL); 266 efx_fill_test(n++, strings, data, &tests->registers, 267 "core", 0, "registers", NULL); 268 269 if (efx->phy_op->run_tests != NULL) { 270 EFX_WARN_ON_PARANOID(efx->phy_op->test_name == NULL); 271 272 for (i = 0; true; ++i) { 273 const char *name; 274 275 EFX_WARN_ON_PARANOID(i >= EFX_MAX_PHY_TESTS); 276 name = efx->phy_op->test_name(efx, i); 277 if (name == NULL) 278 break; 279 280 efx_fill_test(n++, strings, data, &tests->phy_ext[i], 281 "phy", 0, name, NULL); 282 } 283 } 284 285 /* Loopback tests */ 286 for (mode = LOOPBACK_NONE; mode <= LOOPBACK_TEST_MAX; mode++) { 287 if (!(efx->loopback_modes & (1 << mode))) 288 continue; 289 n = efx_fill_loopback_test(efx, 290 &tests->loopback[mode], mode, n, 291 strings, data); 292 } 293 294 return n; 295 } 296 297 static size_t efx_describe_per_queue_stats(struct efx_nic *efx, u8 *strings) 298 { 299 size_t n_stats = 0; 300 struct efx_channel *channel; 301 302 efx_for_each_channel(channel, efx) { 303 if (efx_channel_has_tx_queues(channel)) { 304 n_stats++; 305 if (strings != NULL) { 306 snprintf(strings, ETH_GSTRING_LEN, 307 "tx-%u.tx_packets", 308 channel->tx_queue[0].queue / 309 EFX_TXQ_TYPES); 310 311 strings += ETH_GSTRING_LEN; 312 } 313 } 314 } 315 efx_for_each_channel(channel, efx) { 316 if (efx_channel_has_rx_queue(channel)) { 317 n_stats++; 318 if (strings != NULL) { 319 snprintf(strings, ETH_GSTRING_LEN, 320 "rx-%d.rx_packets", channel->channel); 321 strings += ETH_GSTRING_LEN; 322 } 323 } 324 } 325 if (efx->xdp_tx_queue_count && efx->xdp_tx_queues) { 326 unsigned short xdp; 327 328 for (xdp = 0; xdp < efx->xdp_tx_queue_count; xdp++) { 329 n_stats++; 330 if (strings) { 331 snprintf(strings, ETH_GSTRING_LEN, 332 "tx-xdp-cpu-%hu.tx_packets", xdp); 333 strings += ETH_GSTRING_LEN; 334 } 335 } 336 } 337 338 return n_stats; 339 } 340 341 int efx_ethtool_get_sset_count(struct net_device *net_dev, int string_set) 342 { 343 struct efx_nic *efx = netdev_priv(net_dev); 344 345 switch (string_set) { 346 case ETH_SS_STATS: 347 return efx->type->describe_stats(efx, NULL) + 348 EFX_ETHTOOL_SW_STAT_COUNT + 349 efx_describe_per_queue_stats(efx, NULL) + 350 efx_ptp_describe_stats(efx, NULL); 351 case ETH_SS_TEST: 352 return efx_ethtool_fill_self_tests(efx, NULL, NULL, NULL); 353 default: 354 return -EINVAL; 355 } 356 } 357 358 void efx_ethtool_get_strings(struct net_device *net_dev, 359 u32 string_set, u8 *strings) 360 { 361 struct efx_nic *efx = netdev_priv(net_dev); 362 int i; 363 364 switch (string_set) { 365 case ETH_SS_STATS: 366 strings += (efx->type->describe_stats(efx, strings) * 367 ETH_GSTRING_LEN); 368 for (i = 0; i < EFX_ETHTOOL_SW_STAT_COUNT; i++) 369 strlcpy(strings + i * ETH_GSTRING_LEN, 370 efx_sw_stat_desc[i].name, ETH_GSTRING_LEN); 371 strings += EFX_ETHTOOL_SW_STAT_COUNT * ETH_GSTRING_LEN; 372 strings += (efx_describe_per_queue_stats(efx, strings) * 373 ETH_GSTRING_LEN); 374 efx_ptp_describe_stats(efx, strings); 375 break; 376 case ETH_SS_TEST: 377 efx_ethtool_fill_self_tests(efx, NULL, strings, NULL); 378 break; 379 default: 380 /* No other string sets */ 381 break; 382 } 383 } 384 385 void efx_ethtool_get_stats(struct net_device *net_dev, 386 struct ethtool_stats *stats, 387 u64 *data) 388 { 389 struct efx_nic *efx = netdev_priv(net_dev); 390 const struct efx_sw_stat_desc *stat; 391 struct efx_channel *channel; 392 struct efx_tx_queue *tx_queue; 393 struct efx_rx_queue *rx_queue; 394 int i; 395 396 spin_lock_bh(&efx->stats_lock); 397 398 /* Get NIC statistics */ 399 data += efx->type->update_stats(efx, data, NULL); 400 401 /* Get software statistics */ 402 for (i = 0; i < EFX_ETHTOOL_SW_STAT_COUNT; i++) { 403 stat = &efx_sw_stat_desc[i]; 404 switch (stat->source) { 405 case EFX_ETHTOOL_STAT_SOURCE_nic: 406 data[i] = stat->get_stat((void *)efx + stat->offset); 407 break; 408 case EFX_ETHTOOL_STAT_SOURCE_channel: 409 data[i] = 0; 410 efx_for_each_channel(channel, efx) 411 data[i] += stat->get_stat((void *)channel + 412 stat->offset); 413 break; 414 case EFX_ETHTOOL_STAT_SOURCE_tx_queue: 415 data[i] = 0; 416 efx_for_each_channel(channel, efx) { 417 efx_for_each_channel_tx_queue(tx_queue, channel) 418 data[i] += 419 stat->get_stat((void *)tx_queue 420 + stat->offset); 421 } 422 break; 423 } 424 } 425 data += EFX_ETHTOOL_SW_STAT_COUNT; 426 427 spin_unlock_bh(&efx->stats_lock); 428 429 efx_for_each_channel(channel, efx) { 430 if (efx_channel_has_tx_queues(channel)) { 431 *data = 0; 432 efx_for_each_channel_tx_queue(tx_queue, channel) { 433 *data += tx_queue->tx_packets; 434 } 435 data++; 436 } 437 } 438 efx_for_each_channel(channel, efx) { 439 if (efx_channel_has_rx_queue(channel)) { 440 *data = 0; 441 efx_for_each_channel_rx_queue(rx_queue, channel) { 442 *data += rx_queue->rx_packets; 443 } 444 data++; 445 } 446 } 447 if (efx->xdp_tx_queue_count && efx->xdp_tx_queues) { 448 int xdp; 449 450 for (xdp = 0; xdp < efx->xdp_tx_queue_count; xdp++) { 451 data[0] = efx->xdp_tx_queues[xdp]->tx_packets; 452 data++; 453 } 454 } 455 456 efx_ptp_update_stats(efx, data); 457 } 458