1 /* 2 * Copyright (C) 2015-2017 Netronome Systems, Inc. 3 * 4 * This software is dual licensed under the GNU General License Version 2, 5 * June 1991 as shown in the file COPYING in the top-level directory of this 6 * source tree or the BSD 2-Clause License provided below. You have the 7 * option to license this software under the complete terms of either license. 8 * 9 * The BSD 2-Clause License: 10 * 11 * Redistribution and use in source and binary forms, with or 12 * without modification, are permitted provided that the following 13 * conditions are met: 14 * 15 * 1. Redistributions of source code must retain the above 16 * copyright notice, this list of conditions and the following 17 * disclaimer. 18 * 19 * 2. Redistributions in binary form must reproduce the above 20 * copyright notice, this list of conditions and the following 21 * disclaimer in the documentation and/or other materials 22 * provided with the distribution. 23 * 24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 31 * SOFTWARE. 32 */ 33 34 /* 35 * nfp_net_ethtool.c 36 * Netronome network device driver: ethtool support 37 * Authors: Jakub Kicinski <jakub.kicinski@netronome.com> 38 * Jason McMullan <jason.mcmullan@netronome.com> 39 * Rolf Neugebauer <rolf.neugebauer@netronome.com> 40 * Brad Petrus <brad.petrus@netronome.com> 41 */ 42 43 #include <linux/bitfield.h> 44 #include <linux/kernel.h> 45 #include <linux/netdevice.h> 46 #include <linux/etherdevice.h> 47 #include <linux/interrupt.h> 48 #include <linux/pci.h> 49 #include <linux/ethtool.h> 50 #include <linux/firmware.h> 51 52 #include "nfpcore/nfp.h" 53 #include "nfpcore/nfp_nsp.h" 54 #include "nfp_app.h" 55 #include "nfp_main.h" 56 #include "nfp_net_ctrl.h" 57 #include "nfp_net.h" 58 #include "nfp_port.h" 59 60 struct nfp_et_stat { 61 char name[ETH_GSTRING_LEN]; 62 int off; 63 }; 64 65 static const struct nfp_et_stat nfp_net_et_stats[] = { 66 /* Stats from the device */ 67 { "dev_rx_discards", NFP_NET_CFG_STATS_RX_DISCARDS }, 68 { "dev_rx_errors", NFP_NET_CFG_STATS_RX_ERRORS }, 69 { "dev_rx_bytes", NFP_NET_CFG_STATS_RX_OCTETS }, 70 { "dev_rx_uc_bytes", NFP_NET_CFG_STATS_RX_UC_OCTETS }, 71 { "dev_rx_mc_bytes", NFP_NET_CFG_STATS_RX_MC_OCTETS }, 72 { "dev_rx_bc_bytes", NFP_NET_CFG_STATS_RX_BC_OCTETS }, 73 { "dev_rx_pkts", NFP_NET_CFG_STATS_RX_FRAMES }, 74 { "dev_rx_mc_pkts", NFP_NET_CFG_STATS_RX_MC_FRAMES }, 75 { "dev_rx_bc_pkts", NFP_NET_CFG_STATS_RX_BC_FRAMES }, 76 77 { "dev_tx_discards", NFP_NET_CFG_STATS_TX_DISCARDS }, 78 { "dev_tx_errors", NFP_NET_CFG_STATS_TX_ERRORS }, 79 { "dev_tx_bytes", NFP_NET_CFG_STATS_TX_OCTETS }, 80 { "dev_tx_uc_bytes", NFP_NET_CFG_STATS_TX_UC_OCTETS }, 81 { "dev_tx_mc_bytes", NFP_NET_CFG_STATS_TX_MC_OCTETS }, 82 { "dev_tx_bc_bytes", NFP_NET_CFG_STATS_TX_BC_OCTETS }, 83 { "dev_tx_pkts", NFP_NET_CFG_STATS_TX_FRAMES }, 84 { "dev_tx_mc_pkts", NFP_NET_CFG_STATS_TX_MC_FRAMES }, 85 { "dev_tx_bc_pkts", NFP_NET_CFG_STATS_TX_BC_FRAMES }, 86 87 { "bpf_pass_pkts", NFP_NET_CFG_STATS_APP0_FRAMES }, 88 { "bpf_pass_bytes", NFP_NET_CFG_STATS_APP0_BYTES }, 89 /* see comments in outro functions in nfp_bpf_jit.c to find out 90 * how different BPF modes use app-specific counters 91 */ 92 { "bpf_app1_pkts", NFP_NET_CFG_STATS_APP1_FRAMES }, 93 { "bpf_app1_bytes", NFP_NET_CFG_STATS_APP1_BYTES }, 94 { "bpf_app2_pkts", NFP_NET_CFG_STATS_APP2_FRAMES }, 95 { "bpf_app2_bytes", NFP_NET_CFG_STATS_APP2_BYTES }, 96 { "bpf_app3_pkts", NFP_NET_CFG_STATS_APP3_FRAMES }, 97 { "bpf_app3_bytes", NFP_NET_CFG_STATS_APP3_BYTES }, 98 }; 99 100 static const struct nfp_et_stat nfp_mac_et_stats[] = { 101 { "rx_octets", NFP_MAC_STATS_RX_IN_OCTETS, }, 102 { "rx_frame_too_long_errors", 103 NFP_MAC_STATS_RX_FRAME_TOO_LONG_ERRORS, }, 104 { "rx_range_length_errors", NFP_MAC_STATS_RX_RANGE_LENGTH_ERRORS, }, 105 { "rx_vlan_received_ok", NFP_MAC_STATS_RX_VLAN_RECEIVED_OK, }, 106 { "rx_errors", NFP_MAC_STATS_RX_IN_ERRORS, }, 107 { "rx_broadcast_pkts", NFP_MAC_STATS_RX_IN_BROADCAST_PKTS, }, 108 { "rx_drop_events", NFP_MAC_STATS_RX_DROP_EVENTS, }, 109 { "rx_alignment_errors", NFP_MAC_STATS_RX_ALIGNMENT_ERRORS, }, 110 { "rx_pause_mac_ctrl_frames", 111 NFP_MAC_STATS_RX_PAUSE_MAC_CTRL_FRAMES, }, 112 { "rx_frames_received_ok", NFP_MAC_STATS_RX_FRAMES_RECEIVED_OK, }, 113 { "rx_frame_check_sequence_errors", 114 NFP_MAC_STATS_RX_FRAME_CHECK_SEQUENCE_ERRORS, }, 115 { "rx_unicast_pkts", NFP_MAC_STATS_RX_UNICAST_PKTS, }, 116 { "rx_multicast_pkts", NFP_MAC_STATS_RX_MULTICAST_PKTS, }, 117 { "rx_pkts", NFP_MAC_STATS_RX_PKTS, }, 118 { "rx_undersize_pkts", NFP_MAC_STATS_RX_UNDERSIZE_PKTS, }, 119 { "rx_pkts_64_octets", NFP_MAC_STATS_RX_PKTS_64_OCTETS, }, 120 { "rx_pkts_65_to_127_octets", 121 NFP_MAC_STATS_RX_PKTS_65_TO_127_OCTETS, }, 122 { "rx_pkts_128_to_255_octets", 123 NFP_MAC_STATS_RX_PKTS_128_TO_255_OCTETS, }, 124 { "rx_pkts_256_to_511_octets", 125 NFP_MAC_STATS_RX_PKTS_256_TO_511_OCTETS, }, 126 { "rx_pkts_512_to_1023_octets", 127 NFP_MAC_STATS_RX_PKTS_512_TO_1023_OCTETS, }, 128 { "rx_pkts_1024_to_1518_octets", 129 NFP_MAC_STATS_RX_PKTS_1024_TO_1518_OCTETS, }, 130 { "rx_pkts_1519_to_max_octets", 131 NFP_MAC_STATS_RX_PKTS_1519_TO_MAX_OCTETS, }, 132 { "rx_jabbers", NFP_MAC_STATS_RX_JABBERS, }, 133 { "rx_fragments", NFP_MAC_STATS_RX_FRAGMENTS, }, 134 { "rx_oversize_pkts", NFP_MAC_STATS_RX_OVERSIZE_PKTS, }, 135 { "rx_pause_frames_class0", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS0, }, 136 { "rx_pause_frames_class1", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS1, }, 137 { "rx_pause_frames_class2", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS2, }, 138 { "rx_pause_frames_class3", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS3, }, 139 { "rx_pause_frames_class4", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS4, }, 140 { "rx_pause_frames_class5", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS5, }, 141 { "rx_pause_frames_class6", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS6, }, 142 { "rx_pause_frames_class7", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS7, }, 143 { "rx_mac_ctrl_frames_received", 144 NFP_MAC_STATS_RX_MAC_CTRL_FRAMES_RECEIVED, }, 145 { "rx_mac_head_drop", NFP_MAC_STATS_RX_MAC_HEAD_DROP, }, 146 { "tx_queue_drop", NFP_MAC_STATS_TX_QUEUE_DROP, }, 147 { "tx_octets", NFP_MAC_STATS_TX_OUT_OCTETS, }, 148 { "tx_vlan_transmitted_ok", NFP_MAC_STATS_TX_VLAN_TRANSMITTED_OK, }, 149 { "tx_errors", NFP_MAC_STATS_TX_OUT_ERRORS, }, 150 { "tx_broadcast_pkts", NFP_MAC_STATS_TX_BROADCAST_PKTS, }, 151 { "tx_pause_mac_ctrl_frames", 152 NFP_MAC_STATS_TX_PAUSE_MAC_CTRL_FRAMES, }, 153 { "tx_frames_transmitted_ok", 154 NFP_MAC_STATS_TX_FRAMES_TRANSMITTED_OK, }, 155 { "tx_unicast_pkts", NFP_MAC_STATS_TX_UNICAST_PKTS, }, 156 { "tx_multicast_pkts", NFP_MAC_STATS_TX_MULTICAST_PKTS, }, 157 { "tx_pkts_64_octets", NFP_MAC_STATS_TX_PKTS_64_OCTETS, }, 158 { "tx_pkts_65_to_127_octets", 159 NFP_MAC_STATS_TX_PKTS_65_TO_127_OCTETS, }, 160 { "tx_pkts_128_to_255_octets", 161 NFP_MAC_STATS_TX_PKTS_128_TO_255_OCTETS, }, 162 { "tx_pkts_256_to_511_octets", 163 NFP_MAC_STATS_TX_PKTS_256_TO_511_OCTETS, }, 164 { "tx_pkts_512_to_1023_octets", 165 NFP_MAC_STATS_TX_PKTS_512_TO_1023_OCTETS, }, 166 { "tx_pkts_1024_to_1518_octets", 167 NFP_MAC_STATS_TX_PKTS_1024_TO_1518_OCTETS, }, 168 { "tx_pkts_1519_to_max_octets", 169 NFP_MAC_STATS_TX_PKTS_1519_TO_MAX_OCTETS, }, 170 { "tx_pause_frames_class0", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS0, }, 171 { "tx_pause_frames_class1", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS1, }, 172 { "tx_pause_frames_class2", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS2, }, 173 { "tx_pause_frames_class3", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS3, }, 174 { "tx_pause_frames_class4", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS4, }, 175 { "tx_pause_frames_class5", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS5, }, 176 { "tx_pause_frames_class6", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS6, }, 177 { "tx_pause_frames_class7", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS7, }, 178 }; 179 180 #define NN_ET_GLOBAL_STATS_LEN ARRAY_SIZE(nfp_net_et_stats) 181 #define NN_ET_SWITCH_STATS_LEN 9 182 #define NN_RVEC_GATHER_STATS 8 183 #define NN_RVEC_PER_Q_STATS 3 184 185 static void nfp_net_get_nspinfo(struct nfp_app *app, char *version) 186 { 187 struct nfp_nsp *nsp; 188 189 if (!app) 190 return; 191 192 nsp = nfp_nsp_open(app->cpp); 193 if (IS_ERR(nsp)) 194 return; 195 196 snprintf(version, ETHTOOL_FWVERS_LEN, "%hu.%hu", 197 nfp_nsp_get_abi_ver_major(nsp), 198 nfp_nsp_get_abi_ver_minor(nsp)); 199 200 nfp_nsp_close(nsp); 201 } 202 203 static void 204 nfp_get_drvinfo(struct nfp_app *app, struct pci_dev *pdev, 205 const char *vnic_version, struct ethtool_drvinfo *drvinfo) 206 { 207 char nsp_version[ETHTOOL_FWVERS_LEN] = {}; 208 209 strlcpy(drvinfo->driver, pdev->driver->name, sizeof(drvinfo->driver)); 210 strlcpy(drvinfo->version, nfp_driver_version, sizeof(drvinfo->version)); 211 212 nfp_net_get_nspinfo(app, nsp_version); 213 snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version), 214 "%s %s %s %s", vnic_version, nsp_version, 215 nfp_app_mip_name(app), nfp_app_name(app)); 216 } 217 218 static void 219 nfp_net_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo) 220 { 221 char vnic_version[ETHTOOL_FWVERS_LEN] = {}; 222 struct nfp_net *nn = netdev_priv(netdev); 223 224 snprintf(vnic_version, sizeof(vnic_version), "%d.%d.%d.%d", 225 nn->fw_ver.resv, nn->fw_ver.class, 226 nn->fw_ver.major, nn->fw_ver.minor); 227 strlcpy(drvinfo->bus_info, pci_name(nn->pdev), 228 sizeof(drvinfo->bus_info)); 229 230 nfp_get_drvinfo(nn->app, nn->pdev, vnic_version, drvinfo); 231 } 232 233 static void 234 nfp_app_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo) 235 { 236 struct nfp_app *app; 237 238 app = nfp_app_from_netdev(netdev); 239 if (!app) 240 return; 241 242 nfp_get_drvinfo(app, app->pdev, "*", drvinfo); 243 } 244 245 static void 246 nfp_net_set_fec_link_mode(struct nfp_eth_table_port *eth_port, 247 struct ethtool_link_ksettings *c) 248 { 249 unsigned int modes; 250 251 ethtool_link_ksettings_add_link_mode(c, supported, FEC_NONE); 252 if (!nfp_eth_can_support_fec(eth_port)) { 253 ethtool_link_ksettings_add_link_mode(c, advertising, FEC_NONE); 254 return; 255 } 256 257 modes = nfp_eth_supported_fec_modes(eth_port); 258 if (modes & NFP_FEC_BASER) { 259 ethtool_link_ksettings_add_link_mode(c, supported, FEC_BASER); 260 ethtool_link_ksettings_add_link_mode(c, advertising, FEC_BASER); 261 } 262 263 if (modes & NFP_FEC_REED_SOLOMON) { 264 ethtool_link_ksettings_add_link_mode(c, supported, FEC_RS); 265 ethtool_link_ksettings_add_link_mode(c, advertising, FEC_RS); 266 } 267 } 268 269 /** 270 * nfp_net_get_link_ksettings - Get Link Speed settings 271 * @netdev: network interface device structure 272 * @cmd: ethtool command 273 * 274 * Reports speed settings based on info in the BAR provided by the fw. 275 */ 276 static int 277 nfp_net_get_link_ksettings(struct net_device *netdev, 278 struct ethtool_link_ksettings *cmd) 279 { 280 static const u32 ls_to_ethtool[] = { 281 [NFP_NET_CFG_STS_LINK_RATE_UNSUPPORTED] = 0, 282 [NFP_NET_CFG_STS_LINK_RATE_UNKNOWN] = SPEED_UNKNOWN, 283 [NFP_NET_CFG_STS_LINK_RATE_1G] = SPEED_1000, 284 [NFP_NET_CFG_STS_LINK_RATE_10G] = SPEED_10000, 285 [NFP_NET_CFG_STS_LINK_RATE_25G] = SPEED_25000, 286 [NFP_NET_CFG_STS_LINK_RATE_40G] = SPEED_40000, 287 [NFP_NET_CFG_STS_LINK_RATE_50G] = SPEED_50000, 288 [NFP_NET_CFG_STS_LINK_RATE_100G] = SPEED_100000, 289 }; 290 struct nfp_eth_table_port *eth_port; 291 struct nfp_port *port; 292 struct nfp_net *nn; 293 u32 sts, ls; 294 295 /* Init to unknowns */ 296 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE); 297 cmd->base.port = PORT_OTHER; 298 cmd->base.speed = SPEED_UNKNOWN; 299 cmd->base.duplex = DUPLEX_UNKNOWN; 300 301 port = nfp_port_from_netdev(netdev); 302 eth_port = nfp_port_get_eth_port(port); 303 if (eth_port) { 304 cmd->base.autoneg = eth_port->aneg != NFP_ANEG_DISABLED ? 305 AUTONEG_ENABLE : AUTONEG_DISABLE; 306 nfp_net_set_fec_link_mode(eth_port, cmd); 307 } 308 309 if (!netif_carrier_ok(netdev)) 310 return 0; 311 312 /* Use link speed from ETH table if available, otherwise try the BAR */ 313 if (eth_port) { 314 cmd->base.port = eth_port->port_type; 315 cmd->base.speed = eth_port->speed; 316 cmd->base.duplex = DUPLEX_FULL; 317 return 0; 318 } 319 320 if (!nfp_netdev_is_nfp_net(netdev)) 321 return -EOPNOTSUPP; 322 nn = netdev_priv(netdev); 323 324 sts = nn_readl(nn, NFP_NET_CFG_STS); 325 326 ls = FIELD_GET(NFP_NET_CFG_STS_LINK_RATE, sts); 327 if (ls == NFP_NET_CFG_STS_LINK_RATE_UNSUPPORTED) 328 return -EOPNOTSUPP; 329 330 if (ls == NFP_NET_CFG_STS_LINK_RATE_UNKNOWN || 331 ls >= ARRAY_SIZE(ls_to_ethtool)) 332 return 0; 333 334 cmd->base.speed = ls_to_ethtool[ls]; 335 cmd->base.duplex = DUPLEX_FULL; 336 337 return 0; 338 } 339 340 static int 341 nfp_net_set_link_ksettings(struct net_device *netdev, 342 const struct ethtool_link_ksettings *cmd) 343 { 344 struct nfp_eth_table_port *eth_port; 345 struct nfp_port *port; 346 struct nfp_nsp *nsp; 347 int err; 348 349 port = nfp_port_from_netdev(netdev); 350 eth_port = __nfp_port_get_eth_port(port); 351 if (!eth_port) 352 return -EOPNOTSUPP; 353 354 if (netif_running(netdev)) { 355 netdev_warn(netdev, "Changing settings not allowed on an active interface. It may cause the port to be disabled until driver reload.\n"); 356 return -EBUSY; 357 } 358 359 nsp = nfp_eth_config_start(port->app->cpp, eth_port->index); 360 if (IS_ERR(nsp)) 361 return PTR_ERR(nsp); 362 363 err = __nfp_eth_set_aneg(nsp, cmd->base.autoneg == AUTONEG_ENABLE ? 364 NFP_ANEG_AUTO : NFP_ANEG_DISABLED); 365 if (err) 366 goto err_bad_set; 367 if (cmd->base.speed != SPEED_UNKNOWN) { 368 u32 speed = cmd->base.speed / eth_port->lanes; 369 370 err = __nfp_eth_set_speed(nsp, speed); 371 if (err) 372 goto err_bad_set; 373 } 374 375 err = nfp_eth_config_commit_end(nsp); 376 if (err > 0) 377 return 0; /* no change */ 378 379 nfp_net_refresh_port_table(port); 380 381 return err; 382 383 err_bad_set: 384 nfp_eth_config_cleanup_end(nsp); 385 return err; 386 } 387 388 static void nfp_net_get_ringparam(struct net_device *netdev, 389 struct ethtool_ringparam *ring) 390 { 391 struct nfp_net *nn = netdev_priv(netdev); 392 393 ring->rx_max_pending = NFP_NET_MAX_RX_DESCS; 394 ring->tx_max_pending = NFP_NET_MAX_TX_DESCS; 395 ring->rx_pending = nn->dp.rxd_cnt; 396 ring->tx_pending = nn->dp.txd_cnt; 397 } 398 399 static int nfp_net_set_ring_size(struct nfp_net *nn, u32 rxd_cnt, u32 txd_cnt) 400 { 401 struct nfp_net_dp *dp; 402 403 dp = nfp_net_clone_dp(nn); 404 if (!dp) 405 return -ENOMEM; 406 407 dp->rxd_cnt = rxd_cnt; 408 dp->txd_cnt = txd_cnt; 409 410 return nfp_net_ring_reconfig(nn, dp, NULL); 411 } 412 413 static int nfp_net_set_ringparam(struct net_device *netdev, 414 struct ethtool_ringparam *ring) 415 { 416 struct nfp_net *nn = netdev_priv(netdev); 417 u32 rxd_cnt, txd_cnt; 418 419 /* We don't have separate queues/rings for small/large frames. */ 420 if (ring->rx_mini_pending || ring->rx_jumbo_pending) 421 return -EINVAL; 422 423 /* Round up to supported values */ 424 rxd_cnt = roundup_pow_of_two(ring->rx_pending); 425 txd_cnt = roundup_pow_of_two(ring->tx_pending); 426 427 if (rxd_cnt < NFP_NET_MIN_RX_DESCS || rxd_cnt > NFP_NET_MAX_RX_DESCS || 428 txd_cnt < NFP_NET_MIN_TX_DESCS || txd_cnt > NFP_NET_MAX_TX_DESCS) 429 return -EINVAL; 430 431 if (nn->dp.rxd_cnt == rxd_cnt && nn->dp.txd_cnt == txd_cnt) 432 return 0; 433 434 nn_dbg(nn, "Change ring size: RxQ %u->%u, TxQ %u->%u\n", 435 nn->dp.rxd_cnt, rxd_cnt, nn->dp.txd_cnt, txd_cnt); 436 437 return nfp_net_set_ring_size(nn, rxd_cnt, txd_cnt); 438 } 439 440 static __printf(2, 3) u8 *nfp_pr_et(u8 *data, const char *fmt, ...) 441 { 442 va_list args; 443 444 va_start(args, fmt); 445 vsnprintf(data, ETH_GSTRING_LEN, fmt, args); 446 va_end(args); 447 448 return data + ETH_GSTRING_LEN; 449 } 450 451 static unsigned int nfp_vnic_get_sw_stats_count(struct net_device *netdev) 452 { 453 struct nfp_net *nn = netdev_priv(netdev); 454 455 return NN_RVEC_GATHER_STATS + nn->dp.num_r_vecs * NN_RVEC_PER_Q_STATS; 456 } 457 458 static u8 *nfp_vnic_get_sw_stats_strings(struct net_device *netdev, u8 *data) 459 { 460 struct nfp_net *nn = netdev_priv(netdev); 461 int i; 462 463 for (i = 0; i < nn->dp.num_r_vecs; i++) { 464 data = nfp_pr_et(data, "rvec_%u_rx_pkts", i); 465 data = nfp_pr_et(data, "rvec_%u_tx_pkts", i); 466 data = nfp_pr_et(data, "rvec_%u_tx_busy", i); 467 } 468 469 data = nfp_pr_et(data, "hw_rx_csum_ok"); 470 data = nfp_pr_et(data, "hw_rx_csum_inner_ok"); 471 data = nfp_pr_et(data, "hw_rx_csum_err"); 472 data = nfp_pr_et(data, "rx_replace_buf_alloc_fail"); 473 data = nfp_pr_et(data, "hw_tx_csum"); 474 data = nfp_pr_et(data, "hw_tx_inner_csum"); 475 data = nfp_pr_et(data, "tx_gather"); 476 data = nfp_pr_et(data, "tx_lso"); 477 478 return data; 479 } 480 481 static u64 *nfp_vnic_get_sw_stats(struct net_device *netdev, u64 *data) 482 { 483 u64 gathered_stats[NN_RVEC_GATHER_STATS] = {}; 484 struct nfp_net *nn = netdev_priv(netdev); 485 u64 tmp[NN_RVEC_GATHER_STATS]; 486 unsigned int i, j; 487 488 for (i = 0; i < nn->dp.num_r_vecs; i++) { 489 unsigned int start; 490 491 do { 492 start = u64_stats_fetch_begin(&nn->r_vecs[i].rx_sync); 493 data[0] = nn->r_vecs[i].rx_pkts; 494 tmp[0] = nn->r_vecs[i].hw_csum_rx_ok; 495 tmp[1] = nn->r_vecs[i].hw_csum_rx_inner_ok; 496 tmp[2] = nn->r_vecs[i].hw_csum_rx_error; 497 tmp[3] = nn->r_vecs[i].rx_replace_buf_alloc_fail; 498 } while (u64_stats_fetch_retry(&nn->r_vecs[i].rx_sync, start)); 499 500 do { 501 start = u64_stats_fetch_begin(&nn->r_vecs[i].tx_sync); 502 data[1] = nn->r_vecs[i].tx_pkts; 503 data[2] = nn->r_vecs[i].tx_busy; 504 tmp[4] = nn->r_vecs[i].hw_csum_tx; 505 tmp[5] = nn->r_vecs[i].hw_csum_tx_inner; 506 tmp[6] = nn->r_vecs[i].tx_gather; 507 tmp[7] = nn->r_vecs[i].tx_lso; 508 } while (u64_stats_fetch_retry(&nn->r_vecs[i].tx_sync, start)); 509 510 data += NN_RVEC_PER_Q_STATS; 511 512 for (j = 0; j < NN_RVEC_GATHER_STATS; j++) 513 gathered_stats[j] += tmp[j]; 514 } 515 516 for (j = 0; j < NN_RVEC_GATHER_STATS; j++) 517 *data++ = gathered_stats[j]; 518 519 return data; 520 } 521 522 static unsigned int 523 nfp_vnic_get_hw_stats_count(unsigned int rx_rings, unsigned int tx_rings) 524 { 525 return NN_ET_GLOBAL_STATS_LEN + (rx_rings + tx_rings) * 2; 526 } 527 528 static u8 * 529 nfp_vnic_get_hw_stats_strings(u8 *data, unsigned int rx_rings, 530 unsigned int tx_rings, bool repr) 531 { 532 int swap_off, i; 533 534 BUILD_BUG_ON(NN_ET_GLOBAL_STATS_LEN < NN_ET_SWITCH_STATS_LEN * 2); 535 /* If repr is true first add SWITCH_STATS_LEN and then subtract it 536 * effectively swapping the RX and TX statistics (giving us the RX 537 * and TX from perspective of the switch). 538 */ 539 swap_off = repr * NN_ET_SWITCH_STATS_LEN; 540 541 for (i = 0; i < NN_ET_SWITCH_STATS_LEN; i++) 542 data = nfp_pr_et(data, nfp_net_et_stats[i + swap_off].name); 543 544 for (i = NN_ET_SWITCH_STATS_LEN; i < NN_ET_SWITCH_STATS_LEN * 2; i++) 545 data = nfp_pr_et(data, nfp_net_et_stats[i - swap_off].name); 546 547 for (i = NN_ET_SWITCH_STATS_LEN * 2; i < NN_ET_GLOBAL_STATS_LEN; i++) 548 data = nfp_pr_et(data, nfp_net_et_stats[i].name); 549 550 for (i = 0; i < tx_rings; i++) { 551 data = nfp_pr_et(data, "txq_%u_pkts", i); 552 data = nfp_pr_et(data, "txq_%u_bytes", i); 553 } 554 555 for (i = 0; i < rx_rings; i++) { 556 data = nfp_pr_et(data, "rxq_%u_pkts", i); 557 data = nfp_pr_et(data, "rxq_%u_bytes", i); 558 } 559 560 return data; 561 } 562 563 static u64 * 564 nfp_vnic_get_hw_stats(u64 *data, u8 __iomem *mem, 565 unsigned int rx_rings, unsigned int tx_rings) 566 { 567 unsigned int i; 568 569 for (i = 0; i < NN_ET_GLOBAL_STATS_LEN; i++) 570 *data++ = readq(mem + nfp_net_et_stats[i].off); 571 572 for (i = 0; i < tx_rings; i++) { 573 *data++ = readq(mem + NFP_NET_CFG_TXR_STATS(i)); 574 *data++ = readq(mem + NFP_NET_CFG_TXR_STATS(i) + 8); 575 } 576 577 for (i = 0; i < rx_rings; i++) { 578 *data++ = readq(mem + NFP_NET_CFG_RXR_STATS(i)); 579 *data++ = readq(mem + NFP_NET_CFG_RXR_STATS(i) + 8); 580 } 581 582 return data; 583 } 584 585 static unsigned int nfp_mac_get_stats_count(struct net_device *netdev) 586 { 587 struct nfp_port *port; 588 589 port = nfp_port_from_netdev(netdev); 590 if (!__nfp_port_get_eth_port(port) || !port->eth_stats) 591 return 0; 592 593 return ARRAY_SIZE(nfp_mac_et_stats); 594 } 595 596 static u8 *nfp_mac_get_stats_strings(struct net_device *netdev, u8 *data) 597 { 598 struct nfp_port *port; 599 unsigned int i; 600 601 port = nfp_port_from_netdev(netdev); 602 if (!__nfp_port_get_eth_port(port) || !port->eth_stats) 603 return data; 604 605 for (i = 0; i < ARRAY_SIZE(nfp_mac_et_stats); i++) 606 data = nfp_pr_et(data, "mac.%s", nfp_mac_et_stats[i].name); 607 608 return data; 609 } 610 611 static u64 *nfp_mac_get_stats(struct net_device *netdev, u64 *data) 612 { 613 struct nfp_port *port; 614 unsigned int i; 615 616 port = nfp_port_from_netdev(netdev); 617 if (!__nfp_port_get_eth_port(port) || !port->eth_stats) 618 return data; 619 620 for (i = 0; i < ARRAY_SIZE(nfp_mac_et_stats); i++) 621 *data++ = readq(port->eth_stats + nfp_mac_et_stats[i].off); 622 623 return data; 624 } 625 626 static void nfp_net_get_strings(struct net_device *netdev, 627 u32 stringset, u8 *data) 628 { 629 struct nfp_net *nn = netdev_priv(netdev); 630 631 switch (stringset) { 632 case ETH_SS_STATS: 633 data = nfp_vnic_get_sw_stats_strings(netdev, data); 634 data = nfp_vnic_get_hw_stats_strings(data, nn->dp.num_rx_rings, 635 nn->dp.num_tx_rings, 636 false); 637 data = nfp_mac_get_stats_strings(netdev, data); 638 break; 639 } 640 } 641 642 static void 643 nfp_net_get_stats(struct net_device *netdev, struct ethtool_stats *stats, 644 u64 *data) 645 { 646 struct nfp_net *nn = netdev_priv(netdev); 647 648 data = nfp_vnic_get_sw_stats(netdev, data); 649 data = nfp_vnic_get_hw_stats(data, nn->dp.ctrl_bar, 650 nn->dp.num_rx_rings, nn->dp.num_tx_rings); 651 data = nfp_mac_get_stats(netdev, data); 652 } 653 654 static int nfp_net_get_sset_count(struct net_device *netdev, int sset) 655 { 656 struct nfp_net *nn = netdev_priv(netdev); 657 658 switch (sset) { 659 case ETH_SS_STATS: 660 return nfp_vnic_get_sw_stats_count(netdev) + 661 nfp_vnic_get_hw_stats_count(nn->dp.num_rx_rings, 662 nn->dp.num_tx_rings) + 663 nfp_mac_get_stats_count(netdev); 664 default: 665 return -EOPNOTSUPP; 666 } 667 } 668 669 static void nfp_port_get_strings(struct net_device *netdev, 670 u32 stringset, u8 *data) 671 { 672 struct nfp_port *port = nfp_port_from_netdev(netdev); 673 674 switch (stringset) { 675 case ETH_SS_STATS: 676 if (nfp_port_is_vnic(port)) 677 data = nfp_vnic_get_hw_stats_strings(data, 0, 0, true); 678 else 679 data = nfp_mac_get_stats_strings(netdev, data); 680 break; 681 } 682 } 683 684 static void 685 nfp_port_get_stats(struct net_device *netdev, struct ethtool_stats *stats, 686 u64 *data) 687 { 688 struct nfp_port *port = nfp_port_from_netdev(netdev); 689 690 if (nfp_port_is_vnic(port)) 691 data = nfp_vnic_get_hw_stats(data, port->vnic, 0, 0); 692 else 693 data = nfp_mac_get_stats(netdev, data); 694 } 695 696 static int nfp_port_get_sset_count(struct net_device *netdev, int sset) 697 { 698 struct nfp_port *port = nfp_port_from_netdev(netdev); 699 unsigned int count; 700 701 switch (sset) { 702 case ETH_SS_STATS: 703 if (nfp_port_is_vnic(port)) 704 count = nfp_vnic_get_hw_stats_count(0, 0); 705 else 706 count = nfp_mac_get_stats_count(netdev); 707 return count; 708 default: 709 return -EOPNOTSUPP; 710 } 711 } 712 713 static int nfp_port_fec_ethtool_to_nsp(u32 fec) 714 { 715 switch (fec) { 716 case ETHTOOL_FEC_AUTO: 717 return NFP_FEC_AUTO_BIT; 718 case ETHTOOL_FEC_OFF: 719 return NFP_FEC_DISABLED_BIT; 720 case ETHTOOL_FEC_RS: 721 return NFP_FEC_REED_SOLOMON_BIT; 722 case ETHTOOL_FEC_BASER: 723 return NFP_FEC_BASER_BIT; 724 default: 725 /* NSP only supports a single mode at a time */ 726 return -EOPNOTSUPP; 727 } 728 } 729 730 static u32 nfp_port_fec_nsp_to_ethtool(u32 fec) 731 { 732 u32 result = 0; 733 734 if (fec & NFP_FEC_AUTO) 735 result |= ETHTOOL_FEC_AUTO; 736 if (fec & NFP_FEC_BASER) 737 result |= ETHTOOL_FEC_BASER; 738 if (fec & NFP_FEC_REED_SOLOMON) 739 result |= ETHTOOL_FEC_RS; 740 if (fec & NFP_FEC_DISABLED) 741 result |= ETHTOOL_FEC_OFF; 742 743 return result ?: ETHTOOL_FEC_NONE; 744 } 745 746 static int 747 nfp_port_get_fecparam(struct net_device *netdev, 748 struct ethtool_fecparam *param) 749 { 750 struct nfp_eth_table_port *eth_port; 751 struct nfp_port *port; 752 753 param->active_fec = ETHTOOL_FEC_NONE_BIT; 754 param->fec = ETHTOOL_FEC_NONE_BIT; 755 756 port = nfp_port_from_netdev(netdev); 757 eth_port = nfp_port_get_eth_port(port); 758 if (!eth_port) 759 return -EOPNOTSUPP; 760 761 if (!nfp_eth_can_support_fec(eth_port)) 762 return 0; 763 764 param->fec = nfp_port_fec_nsp_to_ethtool(eth_port->fec_modes_supported); 765 param->active_fec = nfp_port_fec_nsp_to_ethtool(eth_port->fec); 766 767 return 0; 768 } 769 770 static int 771 nfp_port_set_fecparam(struct net_device *netdev, 772 struct ethtool_fecparam *param) 773 { 774 struct nfp_eth_table_port *eth_port; 775 struct nfp_port *port; 776 int err, fec; 777 778 port = nfp_port_from_netdev(netdev); 779 eth_port = nfp_port_get_eth_port(port); 780 if (!eth_port) 781 return -EOPNOTSUPP; 782 783 if (!nfp_eth_can_support_fec(eth_port)) 784 return -EOPNOTSUPP; 785 786 fec = nfp_port_fec_ethtool_to_nsp(param->fec); 787 if (fec < 0) 788 return fec; 789 790 err = nfp_eth_set_fec(port->app->cpp, eth_port->index, fec); 791 if (!err) 792 /* Only refresh if we did something */ 793 nfp_net_refresh_port_table(port); 794 795 return err < 0 ? err : 0; 796 } 797 798 /* RX network flow classification (RSS, filters, etc) 799 */ 800 static u32 ethtool_flow_to_nfp_flag(u32 flow_type) 801 { 802 static const u32 xlate_ethtool_to_nfp[IPV6_FLOW + 1] = { 803 [TCP_V4_FLOW] = NFP_NET_CFG_RSS_IPV4_TCP, 804 [TCP_V6_FLOW] = NFP_NET_CFG_RSS_IPV6_TCP, 805 [UDP_V4_FLOW] = NFP_NET_CFG_RSS_IPV4_UDP, 806 [UDP_V6_FLOW] = NFP_NET_CFG_RSS_IPV6_UDP, 807 [IPV4_FLOW] = NFP_NET_CFG_RSS_IPV4, 808 [IPV6_FLOW] = NFP_NET_CFG_RSS_IPV6, 809 }; 810 811 if (flow_type >= ARRAY_SIZE(xlate_ethtool_to_nfp)) 812 return 0; 813 814 return xlate_ethtool_to_nfp[flow_type]; 815 } 816 817 static int nfp_net_get_rss_hash_opts(struct nfp_net *nn, 818 struct ethtool_rxnfc *cmd) 819 { 820 u32 nfp_rss_flag; 821 822 cmd->data = 0; 823 824 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY)) 825 return -EOPNOTSUPP; 826 827 nfp_rss_flag = ethtool_flow_to_nfp_flag(cmd->flow_type); 828 if (!nfp_rss_flag) 829 return -EINVAL; 830 831 cmd->data |= RXH_IP_SRC | RXH_IP_DST; 832 if (nn->rss_cfg & nfp_rss_flag) 833 cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3; 834 835 return 0; 836 } 837 838 static int nfp_net_get_rxnfc(struct net_device *netdev, 839 struct ethtool_rxnfc *cmd, u32 *rule_locs) 840 { 841 struct nfp_net *nn = netdev_priv(netdev); 842 843 switch (cmd->cmd) { 844 case ETHTOOL_GRXRINGS: 845 cmd->data = nn->dp.num_rx_rings; 846 return 0; 847 case ETHTOOL_GRXFH: 848 return nfp_net_get_rss_hash_opts(nn, cmd); 849 default: 850 return -EOPNOTSUPP; 851 } 852 } 853 854 static int nfp_net_set_rss_hash_opt(struct nfp_net *nn, 855 struct ethtool_rxnfc *nfc) 856 { 857 u32 new_rss_cfg = nn->rss_cfg; 858 u32 nfp_rss_flag; 859 int err; 860 861 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY)) 862 return -EOPNOTSUPP; 863 864 /* RSS only supports IP SA/DA and L4 src/dst ports */ 865 if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST | 866 RXH_L4_B_0_1 | RXH_L4_B_2_3)) 867 return -EINVAL; 868 869 /* We need at least the IP SA/DA fields for hashing */ 870 if (!(nfc->data & RXH_IP_SRC) || 871 !(nfc->data & RXH_IP_DST)) 872 return -EINVAL; 873 874 nfp_rss_flag = ethtool_flow_to_nfp_flag(nfc->flow_type); 875 if (!nfp_rss_flag) 876 return -EINVAL; 877 878 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) { 879 case 0: 880 new_rss_cfg &= ~nfp_rss_flag; 881 break; 882 case (RXH_L4_B_0_1 | RXH_L4_B_2_3): 883 new_rss_cfg |= nfp_rss_flag; 884 break; 885 default: 886 return -EINVAL; 887 } 888 889 new_rss_cfg |= FIELD_PREP(NFP_NET_CFG_RSS_HFUNC, nn->rss_hfunc); 890 new_rss_cfg |= NFP_NET_CFG_RSS_MASK; 891 892 if (new_rss_cfg == nn->rss_cfg) 893 return 0; 894 895 writel(new_rss_cfg, nn->dp.ctrl_bar + NFP_NET_CFG_RSS_CTRL); 896 err = nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_RSS); 897 if (err) 898 return err; 899 900 nn->rss_cfg = new_rss_cfg; 901 902 nn_dbg(nn, "Changed RSS config to 0x%x\n", nn->rss_cfg); 903 return 0; 904 } 905 906 static int nfp_net_set_rxnfc(struct net_device *netdev, 907 struct ethtool_rxnfc *cmd) 908 { 909 struct nfp_net *nn = netdev_priv(netdev); 910 911 switch (cmd->cmd) { 912 case ETHTOOL_SRXFH: 913 return nfp_net_set_rss_hash_opt(nn, cmd); 914 default: 915 return -EOPNOTSUPP; 916 } 917 } 918 919 static u32 nfp_net_get_rxfh_indir_size(struct net_device *netdev) 920 { 921 struct nfp_net *nn = netdev_priv(netdev); 922 923 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY)) 924 return 0; 925 926 return ARRAY_SIZE(nn->rss_itbl); 927 } 928 929 static u32 nfp_net_get_rxfh_key_size(struct net_device *netdev) 930 { 931 struct nfp_net *nn = netdev_priv(netdev); 932 933 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY)) 934 return -EOPNOTSUPP; 935 936 return nfp_net_rss_key_sz(nn); 937 } 938 939 static int nfp_net_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key, 940 u8 *hfunc) 941 { 942 struct nfp_net *nn = netdev_priv(netdev); 943 int i; 944 945 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY)) 946 return -EOPNOTSUPP; 947 948 if (indir) 949 for (i = 0; i < ARRAY_SIZE(nn->rss_itbl); i++) 950 indir[i] = nn->rss_itbl[i]; 951 if (key) 952 memcpy(key, nn->rss_key, nfp_net_rss_key_sz(nn)); 953 if (hfunc) { 954 *hfunc = nn->rss_hfunc; 955 if (*hfunc >= 1 << ETH_RSS_HASH_FUNCS_COUNT) 956 *hfunc = ETH_RSS_HASH_UNKNOWN; 957 } 958 959 return 0; 960 } 961 962 static int nfp_net_set_rxfh(struct net_device *netdev, 963 const u32 *indir, const u8 *key, 964 const u8 hfunc) 965 { 966 struct nfp_net *nn = netdev_priv(netdev); 967 int i; 968 969 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY) || 970 !(hfunc == ETH_RSS_HASH_NO_CHANGE || hfunc == nn->rss_hfunc)) 971 return -EOPNOTSUPP; 972 973 if (!key && !indir) 974 return 0; 975 976 if (key) { 977 memcpy(nn->rss_key, key, nfp_net_rss_key_sz(nn)); 978 nfp_net_rss_write_key(nn); 979 } 980 if (indir) { 981 for (i = 0; i < ARRAY_SIZE(nn->rss_itbl); i++) 982 nn->rss_itbl[i] = indir[i]; 983 984 nfp_net_rss_write_itbl(nn); 985 } 986 987 return nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_RSS); 988 } 989 990 /* Dump BAR registers 991 */ 992 static int nfp_net_get_regs_len(struct net_device *netdev) 993 { 994 return NFP_NET_CFG_BAR_SZ; 995 } 996 997 static void nfp_net_get_regs(struct net_device *netdev, 998 struct ethtool_regs *regs, void *p) 999 { 1000 struct nfp_net *nn = netdev_priv(netdev); 1001 u32 *regs_buf = p; 1002 int i; 1003 1004 regs->version = nn_readl(nn, NFP_NET_CFG_VERSION); 1005 1006 for (i = 0; i < NFP_NET_CFG_BAR_SZ / sizeof(u32); i++) 1007 regs_buf[i] = readl(nn->dp.ctrl_bar + (i * sizeof(u32))); 1008 } 1009 1010 static int nfp_net_get_coalesce(struct net_device *netdev, 1011 struct ethtool_coalesce *ec) 1012 { 1013 struct nfp_net *nn = netdev_priv(netdev); 1014 1015 if (!(nn->cap & NFP_NET_CFG_CTRL_IRQMOD)) 1016 return -EINVAL; 1017 1018 ec->rx_coalesce_usecs = nn->rx_coalesce_usecs; 1019 ec->rx_max_coalesced_frames = nn->rx_coalesce_max_frames; 1020 ec->tx_coalesce_usecs = nn->tx_coalesce_usecs; 1021 ec->tx_max_coalesced_frames = nn->tx_coalesce_max_frames; 1022 1023 return 0; 1024 } 1025 1026 /* Other debug dumps 1027 */ 1028 static int 1029 nfp_dump_nsp_diag(struct nfp_app *app, struct ethtool_dump *dump, void *buffer) 1030 { 1031 struct nfp_resource *res; 1032 int ret; 1033 1034 if (!app) 1035 return -EOPNOTSUPP; 1036 1037 dump->version = 1; 1038 dump->flag = NFP_DUMP_NSP_DIAG; 1039 1040 res = nfp_resource_acquire(app->cpp, NFP_RESOURCE_NSP_DIAG); 1041 if (IS_ERR(res)) 1042 return PTR_ERR(res); 1043 1044 if (buffer) { 1045 if (dump->len != nfp_resource_size(res)) { 1046 ret = -EINVAL; 1047 goto exit_release; 1048 } 1049 1050 ret = nfp_cpp_read(app->cpp, nfp_resource_cpp_id(res), 1051 nfp_resource_address(res), 1052 buffer, dump->len); 1053 if (ret != dump->len) 1054 ret = ret < 0 ? ret : -EIO; 1055 else 1056 ret = 0; 1057 } else { 1058 dump->len = nfp_resource_size(res); 1059 ret = 0; 1060 } 1061 exit_release: 1062 nfp_resource_release(res); 1063 1064 return ret; 1065 } 1066 1067 /* Set the dump flag/level. Calculate the dump length for flag > 0 only (new TLV 1068 * based dumps), since flag 0 (default) calculates the length in 1069 * nfp_app_get_dump_flag(), and we need to support triggering a level 0 dump 1070 * without setting the flag first, for backward compatibility. 1071 */ 1072 static int nfp_app_set_dump(struct net_device *netdev, struct ethtool_dump *val) 1073 { 1074 struct nfp_app *app = nfp_app_from_netdev(netdev); 1075 s64 len; 1076 1077 if (!app) 1078 return -EOPNOTSUPP; 1079 1080 if (val->flag == NFP_DUMP_NSP_DIAG) { 1081 app->pf->dump_flag = val->flag; 1082 return 0; 1083 } 1084 1085 if (!app->pf->dumpspec) 1086 return -EOPNOTSUPP; 1087 1088 len = nfp_net_dump_calculate_size(app->pf, app->pf->dumpspec, 1089 val->flag); 1090 if (len < 0) 1091 return len; 1092 1093 app->pf->dump_flag = val->flag; 1094 app->pf->dump_len = len; 1095 1096 return 0; 1097 } 1098 1099 static int 1100 nfp_app_get_dump_flag(struct net_device *netdev, struct ethtool_dump *dump) 1101 { 1102 struct nfp_app *app = nfp_app_from_netdev(netdev); 1103 1104 if (!app) 1105 return -EOPNOTSUPP; 1106 1107 if (app->pf->dump_flag == NFP_DUMP_NSP_DIAG) 1108 return nfp_dump_nsp_diag(app, dump, NULL); 1109 1110 dump->flag = app->pf->dump_flag; 1111 dump->len = app->pf->dump_len; 1112 1113 return 0; 1114 } 1115 1116 static int 1117 nfp_app_get_dump_data(struct net_device *netdev, struct ethtool_dump *dump, 1118 void *buffer) 1119 { 1120 struct nfp_app *app = nfp_app_from_netdev(netdev); 1121 1122 if (!app) 1123 return -EOPNOTSUPP; 1124 1125 if (app->pf->dump_flag == NFP_DUMP_NSP_DIAG) 1126 return nfp_dump_nsp_diag(app, dump, buffer); 1127 1128 dump->flag = app->pf->dump_flag; 1129 dump->len = app->pf->dump_len; 1130 1131 return nfp_net_dump_populate_buffer(app->pf, app->pf->dumpspec, dump, 1132 buffer); 1133 } 1134 1135 static int nfp_net_set_coalesce(struct net_device *netdev, 1136 struct ethtool_coalesce *ec) 1137 { 1138 struct nfp_net *nn = netdev_priv(netdev); 1139 unsigned int factor; 1140 1141 if (ec->rx_coalesce_usecs_irq || 1142 ec->rx_max_coalesced_frames_irq || 1143 ec->tx_coalesce_usecs_irq || 1144 ec->tx_max_coalesced_frames_irq || 1145 ec->stats_block_coalesce_usecs || 1146 ec->use_adaptive_rx_coalesce || 1147 ec->use_adaptive_tx_coalesce || 1148 ec->pkt_rate_low || 1149 ec->rx_coalesce_usecs_low || 1150 ec->rx_max_coalesced_frames_low || 1151 ec->tx_coalesce_usecs_low || 1152 ec->tx_max_coalesced_frames_low || 1153 ec->pkt_rate_high || 1154 ec->rx_coalesce_usecs_high || 1155 ec->rx_max_coalesced_frames_high || 1156 ec->tx_coalesce_usecs_high || 1157 ec->tx_max_coalesced_frames_high || 1158 ec->rate_sample_interval) 1159 return -EOPNOTSUPP; 1160 1161 /* Compute factor used to convert coalesce '_usecs' parameters to 1162 * ME timestamp ticks. There are 16 ME clock cycles for each timestamp 1163 * count. 1164 */ 1165 factor = nn->me_freq_mhz / 16; 1166 1167 /* Each pair of (usecs, max_frames) fields specifies that interrupts 1168 * should be coalesced until 1169 * (usecs > 0 && time_since_first_completion >= usecs) || 1170 * (max_frames > 0 && completed_frames >= max_frames) 1171 * 1172 * It is illegal to set both usecs and max_frames to zero as this would 1173 * cause interrupts to never be generated. To disable coalescing, set 1174 * usecs = 0 and max_frames = 1. 1175 * 1176 * Some implementations ignore the value of max_frames and use the 1177 * condition time_since_first_completion >= usecs 1178 */ 1179 1180 if (!(nn->cap & NFP_NET_CFG_CTRL_IRQMOD)) 1181 return -EINVAL; 1182 1183 /* ensure valid configuration */ 1184 if (!ec->rx_coalesce_usecs && !ec->rx_max_coalesced_frames) 1185 return -EINVAL; 1186 1187 if (!ec->tx_coalesce_usecs && !ec->tx_max_coalesced_frames) 1188 return -EINVAL; 1189 1190 if (ec->rx_coalesce_usecs * factor >= ((1 << 16) - 1)) 1191 return -EINVAL; 1192 1193 if (ec->tx_coalesce_usecs * factor >= ((1 << 16) - 1)) 1194 return -EINVAL; 1195 1196 if (ec->rx_max_coalesced_frames >= ((1 << 16) - 1)) 1197 return -EINVAL; 1198 1199 if (ec->tx_max_coalesced_frames >= ((1 << 16) - 1)) 1200 return -EINVAL; 1201 1202 /* configuration is valid */ 1203 nn->rx_coalesce_usecs = ec->rx_coalesce_usecs; 1204 nn->rx_coalesce_max_frames = ec->rx_max_coalesced_frames; 1205 nn->tx_coalesce_usecs = ec->tx_coalesce_usecs; 1206 nn->tx_coalesce_max_frames = ec->tx_max_coalesced_frames; 1207 1208 /* write configuration to device */ 1209 nfp_net_coalesce_write_cfg(nn); 1210 return nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_IRQMOD); 1211 } 1212 1213 static void nfp_net_get_channels(struct net_device *netdev, 1214 struct ethtool_channels *channel) 1215 { 1216 struct nfp_net *nn = netdev_priv(netdev); 1217 unsigned int num_tx_rings; 1218 1219 num_tx_rings = nn->dp.num_tx_rings; 1220 if (nn->dp.xdp_prog) 1221 num_tx_rings -= nn->dp.num_rx_rings; 1222 1223 channel->max_rx = min(nn->max_rx_rings, nn->max_r_vecs); 1224 channel->max_tx = min(nn->max_tx_rings, nn->max_r_vecs); 1225 channel->max_combined = min(channel->max_rx, channel->max_tx); 1226 channel->max_other = NFP_NET_NON_Q_VECTORS; 1227 channel->combined_count = min(nn->dp.num_rx_rings, num_tx_rings); 1228 channel->rx_count = nn->dp.num_rx_rings - channel->combined_count; 1229 channel->tx_count = num_tx_rings - channel->combined_count; 1230 channel->other_count = NFP_NET_NON_Q_VECTORS; 1231 } 1232 1233 static int nfp_net_set_num_rings(struct nfp_net *nn, unsigned int total_rx, 1234 unsigned int total_tx) 1235 { 1236 struct nfp_net_dp *dp; 1237 1238 dp = nfp_net_clone_dp(nn); 1239 if (!dp) 1240 return -ENOMEM; 1241 1242 dp->num_rx_rings = total_rx; 1243 dp->num_tx_rings = total_tx; 1244 /* nfp_net_check_config() will catch num_tx_rings > nn->max_tx_rings */ 1245 if (dp->xdp_prog) 1246 dp->num_tx_rings += total_rx; 1247 1248 return nfp_net_ring_reconfig(nn, dp, NULL); 1249 } 1250 1251 static int nfp_net_set_channels(struct net_device *netdev, 1252 struct ethtool_channels *channel) 1253 { 1254 struct nfp_net *nn = netdev_priv(netdev); 1255 unsigned int total_rx, total_tx; 1256 1257 /* Reject unsupported */ 1258 if (!channel->combined_count || 1259 channel->other_count != NFP_NET_NON_Q_VECTORS || 1260 (channel->rx_count && channel->tx_count)) 1261 return -EINVAL; 1262 1263 total_rx = channel->combined_count + channel->rx_count; 1264 total_tx = channel->combined_count + channel->tx_count; 1265 1266 if (total_rx > min(nn->max_rx_rings, nn->max_r_vecs) || 1267 total_tx > min(nn->max_tx_rings, nn->max_r_vecs)) 1268 return -EINVAL; 1269 1270 return nfp_net_set_num_rings(nn, total_rx, total_tx); 1271 } 1272 1273 static int 1274 nfp_net_flash_device(struct net_device *netdev, struct ethtool_flash *flash) 1275 { 1276 const struct firmware *fw; 1277 struct nfp_app *app; 1278 struct nfp_nsp *nsp; 1279 struct device *dev; 1280 int err; 1281 1282 if (flash->region != ETHTOOL_FLASH_ALL_REGIONS) 1283 return -EOPNOTSUPP; 1284 1285 app = nfp_app_from_netdev(netdev); 1286 if (!app) 1287 return -EOPNOTSUPP; 1288 1289 dev = &app->pdev->dev; 1290 1291 nsp = nfp_nsp_open(app->cpp); 1292 if (IS_ERR(nsp)) { 1293 err = PTR_ERR(nsp); 1294 dev_err(dev, "Failed to access the NSP: %d\n", err); 1295 return err; 1296 } 1297 1298 err = request_firmware_direct(&fw, flash->data, dev); 1299 if (err) 1300 goto exit_close_nsp; 1301 1302 dev_info(dev, "Please be patient while writing flash image: %s\n", 1303 flash->data); 1304 dev_hold(netdev); 1305 rtnl_unlock(); 1306 1307 err = nfp_nsp_write_flash(nsp, fw); 1308 if (err < 0) { 1309 dev_err(dev, "Flash write failed: %d\n", err); 1310 goto exit_rtnl_lock; 1311 } 1312 dev_info(dev, "Finished writing flash image\n"); 1313 1314 exit_rtnl_lock: 1315 rtnl_lock(); 1316 dev_put(netdev); 1317 release_firmware(fw); 1318 1319 exit_close_nsp: 1320 nfp_nsp_close(nsp); 1321 return err; 1322 } 1323 1324 static const struct ethtool_ops nfp_net_ethtool_ops = { 1325 .get_drvinfo = nfp_net_get_drvinfo, 1326 .get_link = ethtool_op_get_link, 1327 .get_ringparam = nfp_net_get_ringparam, 1328 .set_ringparam = nfp_net_set_ringparam, 1329 .get_strings = nfp_net_get_strings, 1330 .get_ethtool_stats = nfp_net_get_stats, 1331 .get_sset_count = nfp_net_get_sset_count, 1332 .get_rxnfc = nfp_net_get_rxnfc, 1333 .set_rxnfc = nfp_net_set_rxnfc, 1334 .flash_device = nfp_net_flash_device, 1335 .get_rxfh_indir_size = nfp_net_get_rxfh_indir_size, 1336 .get_rxfh_key_size = nfp_net_get_rxfh_key_size, 1337 .get_rxfh = nfp_net_get_rxfh, 1338 .set_rxfh = nfp_net_set_rxfh, 1339 .get_regs_len = nfp_net_get_regs_len, 1340 .get_regs = nfp_net_get_regs, 1341 .set_dump = nfp_app_set_dump, 1342 .get_dump_flag = nfp_app_get_dump_flag, 1343 .get_dump_data = nfp_app_get_dump_data, 1344 .get_coalesce = nfp_net_get_coalesce, 1345 .set_coalesce = nfp_net_set_coalesce, 1346 .get_channels = nfp_net_get_channels, 1347 .set_channels = nfp_net_set_channels, 1348 .get_link_ksettings = nfp_net_get_link_ksettings, 1349 .set_link_ksettings = nfp_net_set_link_ksettings, 1350 .get_fecparam = nfp_port_get_fecparam, 1351 .set_fecparam = nfp_port_set_fecparam, 1352 }; 1353 1354 const struct ethtool_ops nfp_port_ethtool_ops = { 1355 .get_drvinfo = nfp_app_get_drvinfo, 1356 .get_link = ethtool_op_get_link, 1357 .get_strings = nfp_port_get_strings, 1358 .get_ethtool_stats = nfp_port_get_stats, 1359 .get_sset_count = nfp_port_get_sset_count, 1360 .flash_device = nfp_net_flash_device, 1361 .set_dump = nfp_app_set_dump, 1362 .get_dump_flag = nfp_app_get_dump_flag, 1363 .get_dump_data = nfp_app_get_dump_data, 1364 .get_link_ksettings = nfp_net_get_link_ksettings, 1365 .set_link_ksettings = nfp_net_set_link_ksettings, 1366 .get_fecparam = nfp_port_get_fecparam, 1367 .set_fecparam = nfp_port_set_fecparam, 1368 }; 1369 1370 void nfp_net_set_ethtool_ops(struct net_device *netdev) 1371 { 1372 netdev->ethtool_ops = &nfp_net_ethtool_ops; 1373 } 1374