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 9 183 #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 __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_complete"); 472 data = nfp_pr_et(data, "hw_rx_csum_err"); 473 data = nfp_pr_et(data, "rx_replace_buf_alloc_fail"); 474 data = nfp_pr_et(data, "hw_tx_csum"); 475 data = nfp_pr_et(data, "hw_tx_inner_csum"); 476 data = nfp_pr_et(data, "tx_gather"); 477 data = nfp_pr_et(data, "tx_lso"); 478 479 return data; 480 } 481 482 static u64 *nfp_vnic_get_sw_stats(struct net_device *netdev, u64 *data) 483 { 484 u64 gathered_stats[NN_RVEC_GATHER_STATS] = {}; 485 struct nfp_net *nn = netdev_priv(netdev); 486 u64 tmp[NN_RVEC_GATHER_STATS]; 487 unsigned int i, j; 488 489 for (i = 0; i < nn->dp.num_r_vecs; i++) { 490 unsigned int start; 491 492 do { 493 start = u64_stats_fetch_begin(&nn->r_vecs[i].rx_sync); 494 data[0] = nn->r_vecs[i].rx_pkts; 495 tmp[0] = nn->r_vecs[i].hw_csum_rx_ok; 496 tmp[1] = nn->r_vecs[i].hw_csum_rx_inner_ok; 497 tmp[2] = nn->r_vecs[i].hw_csum_rx_complete; 498 tmp[3] = nn->r_vecs[i].hw_csum_rx_error; 499 tmp[4] = nn->r_vecs[i].rx_replace_buf_alloc_fail; 500 } while (u64_stats_fetch_retry(&nn->r_vecs[i].rx_sync, start)); 501 502 do { 503 start = u64_stats_fetch_begin(&nn->r_vecs[i].tx_sync); 504 data[1] = nn->r_vecs[i].tx_pkts; 505 data[2] = nn->r_vecs[i].tx_busy; 506 tmp[5] = nn->r_vecs[i].hw_csum_tx; 507 tmp[6] = nn->r_vecs[i].hw_csum_tx_inner; 508 tmp[7] = nn->r_vecs[i].tx_gather; 509 tmp[8] = nn->r_vecs[i].tx_lso; 510 } while (u64_stats_fetch_retry(&nn->r_vecs[i].tx_sync, start)); 511 512 data += NN_RVEC_PER_Q_STATS; 513 514 for (j = 0; j < NN_RVEC_GATHER_STATS; j++) 515 gathered_stats[j] += tmp[j]; 516 } 517 518 for (j = 0; j < NN_RVEC_GATHER_STATS; j++) 519 *data++ = gathered_stats[j]; 520 521 return data; 522 } 523 524 static unsigned int 525 nfp_vnic_get_hw_stats_count(unsigned int rx_rings, unsigned int tx_rings) 526 { 527 return NN_ET_GLOBAL_STATS_LEN + (rx_rings + tx_rings) * 2; 528 } 529 530 static u8 * 531 nfp_vnic_get_hw_stats_strings(u8 *data, unsigned int rx_rings, 532 unsigned int tx_rings, bool repr) 533 { 534 int swap_off, i; 535 536 BUILD_BUG_ON(NN_ET_GLOBAL_STATS_LEN < NN_ET_SWITCH_STATS_LEN * 2); 537 /* If repr is true first add SWITCH_STATS_LEN and then subtract it 538 * effectively swapping the RX and TX statistics (giving us the RX 539 * and TX from perspective of the switch). 540 */ 541 swap_off = repr * NN_ET_SWITCH_STATS_LEN; 542 543 for (i = 0; i < NN_ET_SWITCH_STATS_LEN; i++) 544 data = nfp_pr_et(data, nfp_net_et_stats[i + swap_off].name); 545 546 for (i = NN_ET_SWITCH_STATS_LEN; i < NN_ET_SWITCH_STATS_LEN * 2; i++) 547 data = nfp_pr_et(data, nfp_net_et_stats[i - swap_off].name); 548 549 for (i = NN_ET_SWITCH_STATS_LEN * 2; i < NN_ET_GLOBAL_STATS_LEN; i++) 550 data = nfp_pr_et(data, nfp_net_et_stats[i].name); 551 552 for (i = 0; i < tx_rings; i++) { 553 data = nfp_pr_et(data, "txq_%u_pkts", i); 554 data = nfp_pr_et(data, "txq_%u_bytes", i); 555 } 556 557 for (i = 0; i < rx_rings; i++) { 558 data = nfp_pr_et(data, "rxq_%u_pkts", i); 559 data = nfp_pr_et(data, "rxq_%u_bytes", i); 560 } 561 562 return data; 563 } 564 565 static u64 * 566 nfp_vnic_get_hw_stats(u64 *data, u8 __iomem *mem, 567 unsigned int rx_rings, unsigned int tx_rings) 568 { 569 unsigned int i; 570 571 for (i = 0; i < NN_ET_GLOBAL_STATS_LEN; i++) 572 *data++ = readq(mem + nfp_net_et_stats[i].off); 573 574 for (i = 0; i < tx_rings; i++) { 575 *data++ = readq(mem + NFP_NET_CFG_TXR_STATS(i)); 576 *data++ = readq(mem + NFP_NET_CFG_TXR_STATS(i) + 8); 577 } 578 579 for (i = 0; i < rx_rings; i++) { 580 *data++ = readq(mem + NFP_NET_CFG_RXR_STATS(i)); 581 *data++ = readq(mem + NFP_NET_CFG_RXR_STATS(i) + 8); 582 } 583 584 return data; 585 } 586 587 static unsigned int nfp_mac_get_stats_count(struct net_device *netdev) 588 { 589 struct nfp_port *port; 590 591 port = nfp_port_from_netdev(netdev); 592 if (!__nfp_port_get_eth_port(port) || !port->eth_stats) 593 return 0; 594 595 return ARRAY_SIZE(nfp_mac_et_stats); 596 } 597 598 static u8 *nfp_mac_get_stats_strings(struct net_device *netdev, u8 *data) 599 { 600 struct nfp_port *port; 601 unsigned int i; 602 603 port = nfp_port_from_netdev(netdev); 604 if (!__nfp_port_get_eth_port(port) || !port->eth_stats) 605 return data; 606 607 for (i = 0; i < ARRAY_SIZE(nfp_mac_et_stats); i++) 608 data = nfp_pr_et(data, "mac.%s", nfp_mac_et_stats[i].name); 609 610 return data; 611 } 612 613 static u64 *nfp_mac_get_stats(struct net_device *netdev, u64 *data) 614 { 615 struct nfp_port *port; 616 unsigned int i; 617 618 port = nfp_port_from_netdev(netdev); 619 if (!__nfp_port_get_eth_port(port) || !port->eth_stats) 620 return data; 621 622 for (i = 0; i < ARRAY_SIZE(nfp_mac_et_stats); i++) 623 *data++ = readq(port->eth_stats + nfp_mac_et_stats[i].off); 624 625 return data; 626 } 627 628 static void nfp_net_get_strings(struct net_device *netdev, 629 u32 stringset, u8 *data) 630 { 631 struct nfp_net *nn = netdev_priv(netdev); 632 633 switch (stringset) { 634 case ETH_SS_STATS: 635 data = nfp_vnic_get_sw_stats_strings(netdev, data); 636 data = nfp_vnic_get_hw_stats_strings(data, nn->dp.num_rx_rings, 637 nn->dp.num_tx_rings, 638 false); 639 data = nfp_mac_get_stats_strings(netdev, data); 640 data = nfp_app_port_get_stats_strings(nn->port, data); 641 break; 642 } 643 } 644 645 static void 646 nfp_net_get_stats(struct net_device *netdev, struct ethtool_stats *stats, 647 u64 *data) 648 { 649 struct nfp_net *nn = netdev_priv(netdev); 650 651 data = nfp_vnic_get_sw_stats(netdev, data); 652 data = nfp_vnic_get_hw_stats(data, nn->dp.ctrl_bar, 653 nn->dp.num_rx_rings, nn->dp.num_tx_rings); 654 data = nfp_mac_get_stats(netdev, data); 655 data = nfp_app_port_get_stats(nn->port, data); 656 } 657 658 static int nfp_net_get_sset_count(struct net_device *netdev, int sset) 659 { 660 struct nfp_net *nn = netdev_priv(netdev); 661 662 switch (sset) { 663 case ETH_SS_STATS: 664 return nfp_vnic_get_sw_stats_count(netdev) + 665 nfp_vnic_get_hw_stats_count(nn->dp.num_rx_rings, 666 nn->dp.num_tx_rings) + 667 nfp_mac_get_stats_count(netdev) + 668 nfp_app_port_get_stats_count(nn->port); 669 default: 670 return -EOPNOTSUPP; 671 } 672 } 673 674 static void nfp_port_get_strings(struct net_device *netdev, 675 u32 stringset, u8 *data) 676 { 677 struct nfp_port *port = nfp_port_from_netdev(netdev); 678 679 switch (stringset) { 680 case ETH_SS_STATS: 681 if (nfp_port_is_vnic(port)) 682 data = nfp_vnic_get_hw_stats_strings(data, 0, 0, true); 683 else 684 data = nfp_mac_get_stats_strings(netdev, data); 685 data = nfp_app_port_get_stats_strings(port, data); 686 break; 687 } 688 } 689 690 static void 691 nfp_port_get_stats(struct net_device *netdev, struct ethtool_stats *stats, 692 u64 *data) 693 { 694 struct nfp_port *port = nfp_port_from_netdev(netdev); 695 696 if (nfp_port_is_vnic(port)) 697 data = nfp_vnic_get_hw_stats(data, port->vnic, 0, 0); 698 else 699 data = nfp_mac_get_stats(netdev, data); 700 data = nfp_app_port_get_stats(port, data); 701 } 702 703 static int nfp_port_get_sset_count(struct net_device *netdev, int sset) 704 { 705 struct nfp_port *port = nfp_port_from_netdev(netdev); 706 unsigned int count; 707 708 switch (sset) { 709 case ETH_SS_STATS: 710 if (nfp_port_is_vnic(port)) 711 count = nfp_vnic_get_hw_stats_count(0, 0); 712 else 713 count = nfp_mac_get_stats_count(netdev); 714 count += nfp_app_port_get_stats_count(port); 715 return count; 716 default: 717 return -EOPNOTSUPP; 718 } 719 } 720 721 static int nfp_port_fec_ethtool_to_nsp(u32 fec) 722 { 723 switch (fec) { 724 case ETHTOOL_FEC_AUTO: 725 return NFP_FEC_AUTO_BIT; 726 case ETHTOOL_FEC_OFF: 727 return NFP_FEC_DISABLED_BIT; 728 case ETHTOOL_FEC_RS: 729 return NFP_FEC_REED_SOLOMON_BIT; 730 case ETHTOOL_FEC_BASER: 731 return NFP_FEC_BASER_BIT; 732 default: 733 /* NSP only supports a single mode at a time */ 734 return -EOPNOTSUPP; 735 } 736 } 737 738 static u32 nfp_port_fec_nsp_to_ethtool(u32 fec) 739 { 740 u32 result = 0; 741 742 if (fec & NFP_FEC_AUTO) 743 result |= ETHTOOL_FEC_AUTO; 744 if (fec & NFP_FEC_BASER) 745 result |= ETHTOOL_FEC_BASER; 746 if (fec & NFP_FEC_REED_SOLOMON) 747 result |= ETHTOOL_FEC_RS; 748 if (fec & NFP_FEC_DISABLED) 749 result |= ETHTOOL_FEC_OFF; 750 751 return result ?: ETHTOOL_FEC_NONE; 752 } 753 754 static int 755 nfp_port_get_fecparam(struct net_device *netdev, 756 struct ethtool_fecparam *param) 757 { 758 struct nfp_eth_table_port *eth_port; 759 struct nfp_port *port; 760 761 param->active_fec = ETHTOOL_FEC_NONE_BIT; 762 param->fec = ETHTOOL_FEC_NONE_BIT; 763 764 port = nfp_port_from_netdev(netdev); 765 eth_port = nfp_port_get_eth_port(port); 766 if (!eth_port) 767 return -EOPNOTSUPP; 768 769 if (!nfp_eth_can_support_fec(eth_port)) 770 return 0; 771 772 param->fec = nfp_port_fec_nsp_to_ethtool(eth_port->fec_modes_supported); 773 param->active_fec = nfp_port_fec_nsp_to_ethtool(eth_port->fec); 774 775 return 0; 776 } 777 778 static int 779 nfp_port_set_fecparam(struct net_device *netdev, 780 struct ethtool_fecparam *param) 781 { 782 struct nfp_eth_table_port *eth_port; 783 struct nfp_port *port; 784 int err, fec; 785 786 port = nfp_port_from_netdev(netdev); 787 eth_port = nfp_port_get_eth_port(port); 788 if (!eth_port) 789 return -EOPNOTSUPP; 790 791 if (!nfp_eth_can_support_fec(eth_port)) 792 return -EOPNOTSUPP; 793 794 fec = nfp_port_fec_ethtool_to_nsp(param->fec); 795 if (fec < 0) 796 return fec; 797 798 err = nfp_eth_set_fec(port->app->cpp, eth_port->index, fec); 799 if (!err) 800 /* Only refresh if we did something */ 801 nfp_net_refresh_port_table(port); 802 803 return err < 0 ? err : 0; 804 } 805 806 /* RX network flow classification (RSS, filters, etc) 807 */ 808 static u32 ethtool_flow_to_nfp_flag(u32 flow_type) 809 { 810 static const u32 xlate_ethtool_to_nfp[IPV6_FLOW + 1] = { 811 [TCP_V4_FLOW] = NFP_NET_CFG_RSS_IPV4_TCP, 812 [TCP_V6_FLOW] = NFP_NET_CFG_RSS_IPV6_TCP, 813 [UDP_V4_FLOW] = NFP_NET_CFG_RSS_IPV4_UDP, 814 [UDP_V6_FLOW] = NFP_NET_CFG_RSS_IPV6_UDP, 815 [IPV4_FLOW] = NFP_NET_CFG_RSS_IPV4, 816 [IPV6_FLOW] = NFP_NET_CFG_RSS_IPV6, 817 }; 818 819 if (flow_type >= ARRAY_SIZE(xlate_ethtool_to_nfp)) 820 return 0; 821 822 return xlate_ethtool_to_nfp[flow_type]; 823 } 824 825 static int nfp_net_get_rss_hash_opts(struct nfp_net *nn, 826 struct ethtool_rxnfc *cmd) 827 { 828 u32 nfp_rss_flag; 829 830 cmd->data = 0; 831 832 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY)) 833 return -EOPNOTSUPP; 834 835 nfp_rss_flag = ethtool_flow_to_nfp_flag(cmd->flow_type); 836 if (!nfp_rss_flag) 837 return -EINVAL; 838 839 cmd->data |= RXH_IP_SRC | RXH_IP_DST; 840 if (nn->rss_cfg & nfp_rss_flag) 841 cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3; 842 843 return 0; 844 } 845 846 static int nfp_net_get_rxnfc(struct net_device *netdev, 847 struct ethtool_rxnfc *cmd, u32 *rule_locs) 848 { 849 struct nfp_net *nn = netdev_priv(netdev); 850 851 switch (cmd->cmd) { 852 case ETHTOOL_GRXRINGS: 853 cmd->data = nn->dp.num_rx_rings; 854 return 0; 855 case ETHTOOL_GRXFH: 856 return nfp_net_get_rss_hash_opts(nn, cmd); 857 default: 858 return -EOPNOTSUPP; 859 } 860 } 861 862 static int nfp_net_set_rss_hash_opt(struct nfp_net *nn, 863 struct ethtool_rxnfc *nfc) 864 { 865 u32 new_rss_cfg = nn->rss_cfg; 866 u32 nfp_rss_flag; 867 int err; 868 869 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY)) 870 return -EOPNOTSUPP; 871 872 /* RSS only supports IP SA/DA and L4 src/dst ports */ 873 if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST | 874 RXH_L4_B_0_1 | RXH_L4_B_2_3)) 875 return -EINVAL; 876 877 /* We need at least the IP SA/DA fields for hashing */ 878 if (!(nfc->data & RXH_IP_SRC) || 879 !(nfc->data & RXH_IP_DST)) 880 return -EINVAL; 881 882 nfp_rss_flag = ethtool_flow_to_nfp_flag(nfc->flow_type); 883 if (!nfp_rss_flag) 884 return -EINVAL; 885 886 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) { 887 case 0: 888 new_rss_cfg &= ~nfp_rss_flag; 889 break; 890 case (RXH_L4_B_0_1 | RXH_L4_B_2_3): 891 new_rss_cfg |= nfp_rss_flag; 892 break; 893 default: 894 return -EINVAL; 895 } 896 897 new_rss_cfg |= FIELD_PREP(NFP_NET_CFG_RSS_HFUNC, nn->rss_hfunc); 898 new_rss_cfg |= NFP_NET_CFG_RSS_MASK; 899 900 if (new_rss_cfg == nn->rss_cfg) 901 return 0; 902 903 writel(new_rss_cfg, nn->dp.ctrl_bar + NFP_NET_CFG_RSS_CTRL); 904 err = nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_RSS); 905 if (err) 906 return err; 907 908 nn->rss_cfg = new_rss_cfg; 909 910 nn_dbg(nn, "Changed RSS config to 0x%x\n", nn->rss_cfg); 911 return 0; 912 } 913 914 static int nfp_net_set_rxnfc(struct net_device *netdev, 915 struct ethtool_rxnfc *cmd) 916 { 917 struct nfp_net *nn = netdev_priv(netdev); 918 919 switch (cmd->cmd) { 920 case ETHTOOL_SRXFH: 921 return nfp_net_set_rss_hash_opt(nn, cmd); 922 default: 923 return -EOPNOTSUPP; 924 } 925 } 926 927 static u32 nfp_net_get_rxfh_indir_size(struct net_device *netdev) 928 { 929 struct nfp_net *nn = netdev_priv(netdev); 930 931 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY)) 932 return 0; 933 934 return ARRAY_SIZE(nn->rss_itbl); 935 } 936 937 static u32 nfp_net_get_rxfh_key_size(struct net_device *netdev) 938 { 939 struct nfp_net *nn = netdev_priv(netdev); 940 941 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY)) 942 return -EOPNOTSUPP; 943 944 return nfp_net_rss_key_sz(nn); 945 } 946 947 static int nfp_net_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key, 948 u8 *hfunc) 949 { 950 struct nfp_net *nn = netdev_priv(netdev); 951 int i; 952 953 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY)) 954 return -EOPNOTSUPP; 955 956 if (indir) 957 for (i = 0; i < ARRAY_SIZE(nn->rss_itbl); i++) 958 indir[i] = nn->rss_itbl[i]; 959 if (key) 960 memcpy(key, nn->rss_key, nfp_net_rss_key_sz(nn)); 961 if (hfunc) { 962 *hfunc = nn->rss_hfunc; 963 if (*hfunc >= 1 << ETH_RSS_HASH_FUNCS_COUNT) 964 *hfunc = ETH_RSS_HASH_UNKNOWN; 965 } 966 967 return 0; 968 } 969 970 static int nfp_net_set_rxfh(struct net_device *netdev, 971 const u32 *indir, const u8 *key, 972 const u8 hfunc) 973 { 974 struct nfp_net *nn = netdev_priv(netdev); 975 int i; 976 977 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY) || 978 !(hfunc == ETH_RSS_HASH_NO_CHANGE || hfunc == nn->rss_hfunc)) 979 return -EOPNOTSUPP; 980 981 if (!key && !indir) 982 return 0; 983 984 if (key) { 985 memcpy(nn->rss_key, key, nfp_net_rss_key_sz(nn)); 986 nfp_net_rss_write_key(nn); 987 } 988 if (indir) { 989 for (i = 0; i < ARRAY_SIZE(nn->rss_itbl); i++) 990 nn->rss_itbl[i] = indir[i]; 991 992 nfp_net_rss_write_itbl(nn); 993 } 994 995 return nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_RSS); 996 } 997 998 /* Dump BAR registers 999 */ 1000 static int nfp_net_get_regs_len(struct net_device *netdev) 1001 { 1002 return NFP_NET_CFG_BAR_SZ; 1003 } 1004 1005 static void nfp_net_get_regs(struct net_device *netdev, 1006 struct ethtool_regs *regs, void *p) 1007 { 1008 struct nfp_net *nn = netdev_priv(netdev); 1009 u32 *regs_buf = p; 1010 int i; 1011 1012 regs->version = nn_readl(nn, NFP_NET_CFG_VERSION); 1013 1014 for (i = 0; i < NFP_NET_CFG_BAR_SZ / sizeof(u32); i++) 1015 regs_buf[i] = readl(nn->dp.ctrl_bar + (i * sizeof(u32))); 1016 } 1017 1018 static int nfp_net_get_coalesce(struct net_device *netdev, 1019 struct ethtool_coalesce *ec) 1020 { 1021 struct nfp_net *nn = netdev_priv(netdev); 1022 1023 if (!(nn->cap & NFP_NET_CFG_CTRL_IRQMOD)) 1024 return -EINVAL; 1025 1026 ec->rx_coalesce_usecs = nn->rx_coalesce_usecs; 1027 ec->rx_max_coalesced_frames = nn->rx_coalesce_max_frames; 1028 ec->tx_coalesce_usecs = nn->tx_coalesce_usecs; 1029 ec->tx_max_coalesced_frames = nn->tx_coalesce_max_frames; 1030 1031 return 0; 1032 } 1033 1034 /* Other debug dumps 1035 */ 1036 static int 1037 nfp_dump_nsp_diag(struct nfp_app *app, struct ethtool_dump *dump, void *buffer) 1038 { 1039 struct nfp_resource *res; 1040 int ret; 1041 1042 if (!app) 1043 return -EOPNOTSUPP; 1044 1045 dump->version = 1; 1046 dump->flag = NFP_DUMP_NSP_DIAG; 1047 1048 res = nfp_resource_acquire(app->cpp, NFP_RESOURCE_NSP_DIAG); 1049 if (IS_ERR(res)) 1050 return PTR_ERR(res); 1051 1052 if (buffer) { 1053 if (dump->len != nfp_resource_size(res)) { 1054 ret = -EINVAL; 1055 goto exit_release; 1056 } 1057 1058 ret = nfp_cpp_read(app->cpp, nfp_resource_cpp_id(res), 1059 nfp_resource_address(res), 1060 buffer, dump->len); 1061 if (ret != dump->len) 1062 ret = ret < 0 ? ret : -EIO; 1063 else 1064 ret = 0; 1065 } else { 1066 dump->len = nfp_resource_size(res); 1067 ret = 0; 1068 } 1069 exit_release: 1070 nfp_resource_release(res); 1071 1072 return ret; 1073 } 1074 1075 /* Set the dump flag/level. Calculate the dump length for flag > 0 only (new TLV 1076 * based dumps), since flag 0 (default) calculates the length in 1077 * nfp_app_get_dump_flag(), and we need to support triggering a level 0 dump 1078 * without setting the flag first, for backward compatibility. 1079 */ 1080 static int nfp_app_set_dump(struct net_device *netdev, struct ethtool_dump *val) 1081 { 1082 struct nfp_app *app = nfp_app_from_netdev(netdev); 1083 s64 len; 1084 1085 if (!app) 1086 return -EOPNOTSUPP; 1087 1088 if (val->flag == NFP_DUMP_NSP_DIAG) { 1089 app->pf->dump_flag = val->flag; 1090 return 0; 1091 } 1092 1093 if (!app->pf->dumpspec) 1094 return -EOPNOTSUPP; 1095 1096 len = nfp_net_dump_calculate_size(app->pf, app->pf->dumpspec, 1097 val->flag); 1098 if (len < 0) 1099 return len; 1100 1101 app->pf->dump_flag = val->flag; 1102 app->pf->dump_len = len; 1103 1104 return 0; 1105 } 1106 1107 static int 1108 nfp_app_get_dump_flag(struct net_device *netdev, struct ethtool_dump *dump) 1109 { 1110 struct nfp_app *app = nfp_app_from_netdev(netdev); 1111 1112 if (!app) 1113 return -EOPNOTSUPP; 1114 1115 if (app->pf->dump_flag == NFP_DUMP_NSP_DIAG) 1116 return nfp_dump_nsp_diag(app, dump, NULL); 1117 1118 dump->flag = app->pf->dump_flag; 1119 dump->len = app->pf->dump_len; 1120 1121 return 0; 1122 } 1123 1124 static int 1125 nfp_app_get_dump_data(struct net_device *netdev, struct ethtool_dump *dump, 1126 void *buffer) 1127 { 1128 struct nfp_app *app = nfp_app_from_netdev(netdev); 1129 1130 if (!app) 1131 return -EOPNOTSUPP; 1132 1133 if (app->pf->dump_flag == NFP_DUMP_NSP_DIAG) 1134 return nfp_dump_nsp_diag(app, dump, buffer); 1135 1136 dump->flag = app->pf->dump_flag; 1137 dump->len = app->pf->dump_len; 1138 1139 return nfp_net_dump_populate_buffer(app->pf, app->pf->dumpspec, dump, 1140 buffer); 1141 } 1142 1143 static int nfp_net_set_coalesce(struct net_device *netdev, 1144 struct ethtool_coalesce *ec) 1145 { 1146 struct nfp_net *nn = netdev_priv(netdev); 1147 unsigned int factor; 1148 1149 if (ec->rx_coalesce_usecs_irq || 1150 ec->rx_max_coalesced_frames_irq || 1151 ec->tx_coalesce_usecs_irq || 1152 ec->tx_max_coalesced_frames_irq || 1153 ec->stats_block_coalesce_usecs || 1154 ec->use_adaptive_rx_coalesce || 1155 ec->use_adaptive_tx_coalesce || 1156 ec->pkt_rate_low || 1157 ec->rx_coalesce_usecs_low || 1158 ec->rx_max_coalesced_frames_low || 1159 ec->tx_coalesce_usecs_low || 1160 ec->tx_max_coalesced_frames_low || 1161 ec->pkt_rate_high || 1162 ec->rx_coalesce_usecs_high || 1163 ec->rx_max_coalesced_frames_high || 1164 ec->tx_coalesce_usecs_high || 1165 ec->tx_max_coalesced_frames_high || 1166 ec->rate_sample_interval) 1167 return -EOPNOTSUPP; 1168 1169 /* Compute factor used to convert coalesce '_usecs' parameters to 1170 * ME timestamp ticks. There are 16 ME clock cycles for each timestamp 1171 * count. 1172 */ 1173 factor = nn->me_freq_mhz / 16; 1174 1175 /* Each pair of (usecs, max_frames) fields specifies that interrupts 1176 * should be coalesced until 1177 * (usecs > 0 && time_since_first_completion >= usecs) || 1178 * (max_frames > 0 && completed_frames >= max_frames) 1179 * 1180 * It is illegal to set both usecs and max_frames to zero as this would 1181 * cause interrupts to never be generated. To disable coalescing, set 1182 * usecs = 0 and max_frames = 1. 1183 * 1184 * Some implementations ignore the value of max_frames and use the 1185 * condition time_since_first_completion >= usecs 1186 */ 1187 1188 if (!(nn->cap & NFP_NET_CFG_CTRL_IRQMOD)) 1189 return -EINVAL; 1190 1191 /* ensure valid configuration */ 1192 if (!ec->rx_coalesce_usecs && !ec->rx_max_coalesced_frames) 1193 return -EINVAL; 1194 1195 if (!ec->tx_coalesce_usecs && !ec->tx_max_coalesced_frames) 1196 return -EINVAL; 1197 1198 if (ec->rx_coalesce_usecs * factor >= ((1 << 16) - 1)) 1199 return -EINVAL; 1200 1201 if (ec->tx_coalesce_usecs * factor >= ((1 << 16) - 1)) 1202 return -EINVAL; 1203 1204 if (ec->rx_max_coalesced_frames >= ((1 << 16) - 1)) 1205 return -EINVAL; 1206 1207 if (ec->tx_max_coalesced_frames >= ((1 << 16) - 1)) 1208 return -EINVAL; 1209 1210 /* configuration is valid */ 1211 nn->rx_coalesce_usecs = ec->rx_coalesce_usecs; 1212 nn->rx_coalesce_max_frames = ec->rx_max_coalesced_frames; 1213 nn->tx_coalesce_usecs = ec->tx_coalesce_usecs; 1214 nn->tx_coalesce_max_frames = ec->tx_max_coalesced_frames; 1215 1216 /* write configuration to device */ 1217 nfp_net_coalesce_write_cfg(nn); 1218 return nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_IRQMOD); 1219 } 1220 1221 static void nfp_net_get_channels(struct net_device *netdev, 1222 struct ethtool_channels *channel) 1223 { 1224 struct nfp_net *nn = netdev_priv(netdev); 1225 unsigned int num_tx_rings; 1226 1227 num_tx_rings = nn->dp.num_tx_rings; 1228 if (nn->dp.xdp_prog) 1229 num_tx_rings -= nn->dp.num_rx_rings; 1230 1231 channel->max_rx = min(nn->max_rx_rings, nn->max_r_vecs); 1232 channel->max_tx = min(nn->max_tx_rings, nn->max_r_vecs); 1233 channel->max_combined = min(channel->max_rx, channel->max_tx); 1234 channel->max_other = NFP_NET_NON_Q_VECTORS; 1235 channel->combined_count = min(nn->dp.num_rx_rings, num_tx_rings); 1236 channel->rx_count = nn->dp.num_rx_rings - channel->combined_count; 1237 channel->tx_count = num_tx_rings - channel->combined_count; 1238 channel->other_count = NFP_NET_NON_Q_VECTORS; 1239 } 1240 1241 static int nfp_net_set_num_rings(struct nfp_net *nn, unsigned int total_rx, 1242 unsigned int total_tx) 1243 { 1244 struct nfp_net_dp *dp; 1245 1246 dp = nfp_net_clone_dp(nn); 1247 if (!dp) 1248 return -ENOMEM; 1249 1250 dp->num_rx_rings = total_rx; 1251 dp->num_tx_rings = total_tx; 1252 /* nfp_net_check_config() will catch num_tx_rings > nn->max_tx_rings */ 1253 if (dp->xdp_prog) 1254 dp->num_tx_rings += total_rx; 1255 1256 return nfp_net_ring_reconfig(nn, dp, NULL); 1257 } 1258 1259 static int nfp_net_set_channels(struct net_device *netdev, 1260 struct ethtool_channels *channel) 1261 { 1262 struct nfp_net *nn = netdev_priv(netdev); 1263 unsigned int total_rx, total_tx; 1264 1265 /* Reject unsupported */ 1266 if (!channel->combined_count || 1267 channel->other_count != NFP_NET_NON_Q_VECTORS || 1268 (channel->rx_count && channel->tx_count)) 1269 return -EINVAL; 1270 1271 total_rx = channel->combined_count + channel->rx_count; 1272 total_tx = channel->combined_count + channel->tx_count; 1273 1274 if (total_rx > min(nn->max_rx_rings, nn->max_r_vecs) || 1275 total_tx > min(nn->max_tx_rings, nn->max_r_vecs)) 1276 return -EINVAL; 1277 1278 return nfp_net_set_num_rings(nn, total_rx, total_tx); 1279 } 1280 1281 static int 1282 nfp_net_flash_device(struct net_device *netdev, struct ethtool_flash *flash) 1283 { 1284 const struct firmware *fw; 1285 struct nfp_app *app; 1286 struct nfp_nsp *nsp; 1287 struct device *dev; 1288 int err; 1289 1290 if (flash->region != ETHTOOL_FLASH_ALL_REGIONS) 1291 return -EOPNOTSUPP; 1292 1293 app = nfp_app_from_netdev(netdev); 1294 if (!app) 1295 return -EOPNOTSUPP; 1296 1297 dev = &app->pdev->dev; 1298 1299 nsp = nfp_nsp_open(app->cpp); 1300 if (IS_ERR(nsp)) { 1301 err = PTR_ERR(nsp); 1302 dev_err(dev, "Failed to access the NSP: %d\n", err); 1303 return err; 1304 } 1305 1306 err = request_firmware_direct(&fw, flash->data, dev); 1307 if (err) 1308 goto exit_close_nsp; 1309 1310 dev_info(dev, "Please be patient while writing flash image: %s\n", 1311 flash->data); 1312 dev_hold(netdev); 1313 rtnl_unlock(); 1314 1315 err = nfp_nsp_write_flash(nsp, fw); 1316 if (err < 0) { 1317 dev_err(dev, "Flash write failed: %d\n", err); 1318 goto exit_rtnl_lock; 1319 } 1320 dev_info(dev, "Finished writing flash image\n"); 1321 1322 exit_rtnl_lock: 1323 rtnl_lock(); 1324 dev_put(netdev); 1325 release_firmware(fw); 1326 1327 exit_close_nsp: 1328 nfp_nsp_close(nsp); 1329 return err; 1330 } 1331 1332 static const struct ethtool_ops nfp_net_ethtool_ops = { 1333 .get_drvinfo = nfp_net_get_drvinfo, 1334 .get_link = ethtool_op_get_link, 1335 .get_ringparam = nfp_net_get_ringparam, 1336 .set_ringparam = nfp_net_set_ringparam, 1337 .get_strings = nfp_net_get_strings, 1338 .get_ethtool_stats = nfp_net_get_stats, 1339 .get_sset_count = nfp_net_get_sset_count, 1340 .get_rxnfc = nfp_net_get_rxnfc, 1341 .set_rxnfc = nfp_net_set_rxnfc, 1342 .flash_device = nfp_net_flash_device, 1343 .get_rxfh_indir_size = nfp_net_get_rxfh_indir_size, 1344 .get_rxfh_key_size = nfp_net_get_rxfh_key_size, 1345 .get_rxfh = nfp_net_get_rxfh, 1346 .set_rxfh = nfp_net_set_rxfh, 1347 .get_regs_len = nfp_net_get_regs_len, 1348 .get_regs = nfp_net_get_regs, 1349 .set_dump = nfp_app_set_dump, 1350 .get_dump_flag = nfp_app_get_dump_flag, 1351 .get_dump_data = nfp_app_get_dump_data, 1352 .get_coalesce = nfp_net_get_coalesce, 1353 .set_coalesce = nfp_net_set_coalesce, 1354 .get_channels = nfp_net_get_channels, 1355 .set_channels = nfp_net_set_channels, 1356 .get_link_ksettings = nfp_net_get_link_ksettings, 1357 .set_link_ksettings = nfp_net_set_link_ksettings, 1358 .get_fecparam = nfp_port_get_fecparam, 1359 .set_fecparam = nfp_port_set_fecparam, 1360 }; 1361 1362 const struct ethtool_ops nfp_port_ethtool_ops = { 1363 .get_drvinfo = nfp_app_get_drvinfo, 1364 .get_link = ethtool_op_get_link, 1365 .get_strings = nfp_port_get_strings, 1366 .get_ethtool_stats = nfp_port_get_stats, 1367 .get_sset_count = nfp_port_get_sset_count, 1368 .flash_device = nfp_net_flash_device, 1369 .set_dump = nfp_app_set_dump, 1370 .get_dump_flag = nfp_app_get_dump_flag, 1371 .get_dump_data = nfp_app_get_dump_data, 1372 .get_link_ksettings = nfp_net_get_link_ksettings, 1373 .set_link_ksettings = nfp_net_set_link_ksettings, 1374 .get_fecparam = nfp_port_get_fecparam, 1375 .set_fecparam = nfp_port_set_fecparam, 1376 }; 1377 1378 void nfp_net_set_ethtool_ops(struct net_device *netdev) 1379 { 1380 netdev->ethtool_ops = &nfp_net_ethtool_ops; 1381 } 1382