1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2 /* Copyright (C) 2015-2018 Netronome Systems, Inc. */ 3 4 /* 5 * nfp_net_ethtool.c 6 * Netronome network device driver: ethtool support 7 * Authors: Jakub Kicinski <jakub.kicinski@netronome.com> 8 * Jason McMullan <jason.mcmullan@netronome.com> 9 * Rolf Neugebauer <rolf.neugebauer@netronome.com> 10 * Brad Petrus <brad.petrus@netronome.com> 11 */ 12 13 #include <linux/bitfield.h> 14 #include <linux/kernel.h> 15 #include <linux/netdevice.h> 16 #include <linux/etherdevice.h> 17 #include <linux/interrupt.h> 18 #include <linux/pci.h> 19 #include <linux/ethtool.h> 20 #include <linux/firmware.h> 21 #include <linux/sfp.h> 22 23 #include "nfpcore/nfp.h" 24 #include "nfpcore/nfp_nsp.h" 25 #include "nfp_app.h" 26 #include "nfp_main.h" 27 #include "nfp_net_ctrl.h" 28 #include "nfp_net.h" 29 #include "nfp_port.h" 30 31 struct nfp_et_stat { 32 char name[ETH_GSTRING_LEN]; 33 int off; 34 }; 35 36 static const struct nfp_et_stat nfp_net_et_stats[] = { 37 /* Stats from the device */ 38 { "dev_rx_discards", NFP_NET_CFG_STATS_RX_DISCARDS }, 39 { "dev_rx_errors", NFP_NET_CFG_STATS_RX_ERRORS }, 40 { "dev_rx_bytes", NFP_NET_CFG_STATS_RX_OCTETS }, 41 { "dev_rx_uc_bytes", NFP_NET_CFG_STATS_RX_UC_OCTETS }, 42 { "dev_rx_mc_bytes", NFP_NET_CFG_STATS_RX_MC_OCTETS }, 43 { "dev_rx_bc_bytes", NFP_NET_CFG_STATS_RX_BC_OCTETS }, 44 { "dev_rx_pkts", NFP_NET_CFG_STATS_RX_FRAMES }, 45 { "dev_rx_mc_pkts", NFP_NET_CFG_STATS_RX_MC_FRAMES }, 46 { "dev_rx_bc_pkts", NFP_NET_CFG_STATS_RX_BC_FRAMES }, 47 48 { "dev_tx_discards", NFP_NET_CFG_STATS_TX_DISCARDS }, 49 { "dev_tx_errors", NFP_NET_CFG_STATS_TX_ERRORS }, 50 { "dev_tx_bytes", NFP_NET_CFG_STATS_TX_OCTETS }, 51 { "dev_tx_uc_bytes", NFP_NET_CFG_STATS_TX_UC_OCTETS }, 52 { "dev_tx_mc_bytes", NFP_NET_CFG_STATS_TX_MC_OCTETS }, 53 { "dev_tx_bc_bytes", NFP_NET_CFG_STATS_TX_BC_OCTETS }, 54 { "dev_tx_pkts", NFP_NET_CFG_STATS_TX_FRAMES }, 55 { "dev_tx_mc_pkts", NFP_NET_CFG_STATS_TX_MC_FRAMES }, 56 { "dev_tx_bc_pkts", NFP_NET_CFG_STATS_TX_BC_FRAMES }, 57 58 { "bpf_pass_pkts", NFP_NET_CFG_STATS_APP0_FRAMES }, 59 { "bpf_pass_bytes", NFP_NET_CFG_STATS_APP0_BYTES }, 60 /* see comments in outro functions in nfp_bpf_jit.c to find out 61 * how different BPF modes use app-specific counters 62 */ 63 { "bpf_app1_pkts", NFP_NET_CFG_STATS_APP1_FRAMES }, 64 { "bpf_app1_bytes", NFP_NET_CFG_STATS_APP1_BYTES }, 65 { "bpf_app2_pkts", NFP_NET_CFG_STATS_APP2_FRAMES }, 66 { "bpf_app2_bytes", NFP_NET_CFG_STATS_APP2_BYTES }, 67 { "bpf_app3_pkts", NFP_NET_CFG_STATS_APP3_FRAMES }, 68 { "bpf_app3_bytes", NFP_NET_CFG_STATS_APP3_BYTES }, 69 }; 70 71 static const struct nfp_et_stat nfp_mac_et_stats[] = { 72 { "rx_octets", NFP_MAC_STATS_RX_IN_OCTETS, }, 73 { "rx_frame_too_long_errors", 74 NFP_MAC_STATS_RX_FRAME_TOO_LONG_ERRORS, }, 75 { "rx_range_length_errors", NFP_MAC_STATS_RX_RANGE_LENGTH_ERRORS, }, 76 { "rx_vlan_received_ok", NFP_MAC_STATS_RX_VLAN_RECEIVED_OK, }, 77 { "rx_errors", NFP_MAC_STATS_RX_IN_ERRORS, }, 78 { "rx_broadcast_pkts", NFP_MAC_STATS_RX_IN_BROADCAST_PKTS, }, 79 { "rx_drop_events", NFP_MAC_STATS_RX_DROP_EVENTS, }, 80 { "rx_alignment_errors", NFP_MAC_STATS_RX_ALIGNMENT_ERRORS, }, 81 { "rx_pause_mac_ctrl_frames", 82 NFP_MAC_STATS_RX_PAUSE_MAC_CTRL_FRAMES, }, 83 { "rx_frames_received_ok", NFP_MAC_STATS_RX_FRAMES_RECEIVED_OK, }, 84 { "rx_frame_check_sequence_errors", 85 NFP_MAC_STATS_RX_FRAME_CHECK_SEQUENCE_ERRORS, }, 86 { "rx_unicast_pkts", NFP_MAC_STATS_RX_UNICAST_PKTS, }, 87 { "rx_multicast_pkts", NFP_MAC_STATS_RX_MULTICAST_PKTS, }, 88 { "rx_pkts", NFP_MAC_STATS_RX_PKTS, }, 89 { "rx_undersize_pkts", NFP_MAC_STATS_RX_UNDERSIZE_PKTS, }, 90 { "rx_pkts_64_octets", NFP_MAC_STATS_RX_PKTS_64_OCTETS, }, 91 { "rx_pkts_65_to_127_octets", 92 NFP_MAC_STATS_RX_PKTS_65_TO_127_OCTETS, }, 93 { "rx_pkts_128_to_255_octets", 94 NFP_MAC_STATS_RX_PKTS_128_TO_255_OCTETS, }, 95 { "rx_pkts_256_to_511_octets", 96 NFP_MAC_STATS_RX_PKTS_256_TO_511_OCTETS, }, 97 { "rx_pkts_512_to_1023_octets", 98 NFP_MAC_STATS_RX_PKTS_512_TO_1023_OCTETS, }, 99 { "rx_pkts_1024_to_1518_octets", 100 NFP_MAC_STATS_RX_PKTS_1024_TO_1518_OCTETS, }, 101 { "rx_pkts_1519_to_max_octets", 102 NFP_MAC_STATS_RX_PKTS_1519_TO_MAX_OCTETS, }, 103 { "rx_jabbers", NFP_MAC_STATS_RX_JABBERS, }, 104 { "rx_fragments", NFP_MAC_STATS_RX_FRAGMENTS, }, 105 { "rx_oversize_pkts", NFP_MAC_STATS_RX_OVERSIZE_PKTS, }, 106 { "rx_pause_frames_class0", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS0, }, 107 { "rx_pause_frames_class1", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS1, }, 108 { "rx_pause_frames_class2", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS2, }, 109 { "rx_pause_frames_class3", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS3, }, 110 { "rx_pause_frames_class4", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS4, }, 111 { "rx_pause_frames_class5", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS5, }, 112 { "rx_pause_frames_class6", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS6, }, 113 { "rx_pause_frames_class7", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS7, }, 114 { "rx_mac_ctrl_frames_received", 115 NFP_MAC_STATS_RX_MAC_CTRL_FRAMES_RECEIVED, }, 116 { "rx_mac_head_drop", NFP_MAC_STATS_RX_MAC_HEAD_DROP, }, 117 { "tx_queue_drop", NFP_MAC_STATS_TX_QUEUE_DROP, }, 118 { "tx_octets", NFP_MAC_STATS_TX_OUT_OCTETS, }, 119 { "tx_vlan_transmitted_ok", NFP_MAC_STATS_TX_VLAN_TRANSMITTED_OK, }, 120 { "tx_errors", NFP_MAC_STATS_TX_OUT_ERRORS, }, 121 { "tx_broadcast_pkts", NFP_MAC_STATS_TX_BROADCAST_PKTS, }, 122 { "tx_pause_mac_ctrl_frames", 123 NFP_MAC_STATS_TX_PAUSE_MAC_CTRL_FRAMES, }, 124 { "tx_frames_transmitted_ok", 125 NFP_MAC_STATS_TX_FRAMES_TRANSMITTED_OK, }, 126 { "tx_unicast_pkts", NFP_MAC_STATS_TX_UNICAST_PKTS, }, 127 { "tx_multicast_pkts", NFP_MAC_STATS_TX_MULTICAST_PKTS, }, 128 { "tx_pkts_64_octets", NFP_MAC_STATS_TX_PKTS_64_OCTETS, }, 129 { "tx_pkts_65_to_127_octets", 130 NFP_MAC_STATS_TX_PKTS_65_TO_127_OCTETS, }, 131 { "tx_pkts_128_to_255_octets", 132 NFP_MAC_STATS_TX_PKTS_128_TO_255_OCTETS, }, 133 { "tx_pkts_256_to_511_octets", 134 NFP_MAC_STATS_TX_PKTS_256_TO_511_OCTETS, }, 135 { "tx_pkts_512_to_1023_octets", 136 NFP_MAC_STATS_TX_PKTS_512_TO_1023_OCTETS, }, 137 { "tx_pkts_1024_to_1518_octets", 138 NFP_MAC_STATS_TX_PKTS_1024_TO_1518_OCTETS, }, 139 { "tx_pkts_1519_to_max_octets", 140 NFP_MAC_STATS_TX_PKTS_1519_TO_MAX_OCTETS, }, 141 { "tx_pause_frames_class0", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS0, }, 142 { "tx_pause_frames_class1", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS1, }, 143 { "tx_pause_frames_class2", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS2, }, 144 { "tx_pause_frames_class3", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS3, }, 145 { "tx_pause_frames_class4", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS4, }, 146 { "tx_pause_frames_class5", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS5, }, 147 { "tx_pause_frames_class6", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS6, }, 148 { "tx_pause_frames_class7", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS7, }, 149 }; 150 151 #define NN_ET_GLOBAL_STATS_LEN ARRAY_SIZE(nfp_net_et_stats) 152 #define NN_ET_SWITCH_STATS_LEN 9 153 #define NN_RVEC_GATHER_STATS 9 154 #define NN_RVEC_PER_Q_STATS 3 155 156 #define SFP_SFF_REV_COMPLIANCE 1 157 158 static void nfp_net_get_nspinfo(struct nfp_app *app, char *version) 159 { 160 struct nfp_nsp *nsp; 161 162 if (!app) 163 return; 164 165 nsp = nfp_nsp_open(app->cpp); 166 if (IS_ERR(nsp)) 167 return; 168 169 snprintf(version, ETHTOOL_FWVERS_LEN, "%hu.%hu", 170 nfp_nsp_get_abi_ver_major(nsp), 171 nfp_nsp_get_abi_ver_minor(nsp)); 172 173 nfp_nsp_close(nsp); 174 } 175 176 static void 177 nfp_get_drvinfo(struct nfp_app *app, struct pci_dev *pdev, 178 const char *vnic_version, struct ethtool_drvinfo *drvinfo) 179 { 180 char nsp_version[ETHTOOL_FWVERS_LEN] = {}; 181 182 strlcpy(drvinfo->driver, pdev->driver->name, sizeof(drvinfo->driver)); 183 strlcpy(drvinfo->version, nfp_driver_version, sizeof(drvinfo->version)); 184 185 nfp_net_get_nspinfo(app, nsp_version); 186 snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version), 187 "%s %s %s %s", vnic_version, nsp_version, 188 nfp_app_mip_name(app), nfp_app_name(app)); 189 } 190 191 static void 192 nfp_net_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo) 193 { 194 char vnic_version[ETHTOOL_FWVERS_LEN] = {}; 195 struct nfp_net *nn = netdev_priv(netdev); 196 197 snprintf(vnic_version, sizeof(vnic_version), "%d.%d.%d.%d", 198 nn->fw_ver.resv, nn->fw_ver.class, 199 nn->fw_ver.major, nn->fw_ver.minor); 200 strlcpy(drvinfo->bus_info, pci_name(nn->pdev), 201 sizeof(drvinfo->bus_info)); 202 203 nfp_get_drvinfo(nn->app, nn->pdev, vnic_version, drvinfo); 204 } 205 206 static void 207 nfp_app_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo) 208 { 209 struct nfp_app *app = nfp_app_from_netdev(netdev); 210 211 strlcpy(drvinfo->bus_info, pci_name(app->pdev), 212 sizeof(drvinfo->bus_info)); 213 nfp_get_drvinfo(app, app->pdev, "*", drvinfo); 214 } 215 216 static void 217 nfp_net_set_fec_link_mode(struct nfp_eth_table_port *eth_port, 218 struct ethtool_link_ksettings *c) 219 { 220 unsigned int modes; 221 222 ethtool_link_ksettings_add_link_mode(c, supported, FEC_NONE); 223 if (!nfp_eth_can_support_fec(eth_port)) { 224 ethtool_link_ksettings_add_link_mode(c, advertising, FEC_NONE); 225 return; 226 } 227 228 modes = nfp_eth_supported_fec_modes(eth_port); 229 if (modes & NFP_FEC_BASER) { 230 ethtool_link_ksettings_add_link_mode(c, supported, FEC_BASER); 231 ethtool_link_ksettings_add_link_mode(c, advertising, FEC_BASER); 232 } 233 234 if (modes & NFP_FEC_REED_SOLOMON) { 235 ethtool_link_ksettings_add_link_mode(c, supported, FEC_RS); 236 ethtool_link_ksettings_add_link_mode(c, advertising, FEC_RS); 237 } 238 } 239 240 /** 241 * nfp_net_get_link_ksettings - Get Link Speed settings 242 * @netdev: network interface device structure 243 * @cmd: ethtool command 244 * 245 * Reports speed settings based on info in the BAR provided by the fw. 246 */ 247 static int 248 nfp_net_get_link_ksettings(struct net_device *netdev, 249 struct ethtool_link_ksettings *cmd) 250 { 251 static const u32 ls_to_ethtool[] = { 252 [NFP_NET_CFG_STS_LINK_RATE_UNSUPPORTED] = 0, 253 [NFP_NET_CFG_STS_LINK_RATE_UNKNOWN] = SPEED_UNKNOWN, 254 [NFP_NET_CFG_STS_LINK_RATE_1G] = SPEED_1000, 255 [NFP_NET_CFG_STS_LINK_RATE_10G] = SPEED_10000, 256 [NFP_NET_CFG_STS_LINK_RATE_25G] = SPEED_25000, 257 [NFP_NET_CFG_STS_LINK_RATE_40G] = SPEED_40000, 258 [NFP_NET_CFG_STS_LINK_RATE_50G] = SPEED_50000, 259 [NFP_NET_CFG_STS_LINK_RATE_100G] = SPEED_100000, 260 }; 261 struct nfp_eth_table_port *eth_port; 262 struct nfp_port *port; 263 struct nfp_net *nn; 264 u32 sts, ls; 265 266 /* Init to unknowns */ 267 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE); 268 cmd->base.port = PORT_OTHER; 269 cmd->base.speed = SPEED_UNKNOWN; 270 cmd->base.duplex = DUPLEX_UNKNOWN; 271 272 port = nfp_port_from_netdev(netdev); 273 eth_port = nfp_port_get_eth_port(port); 274 if (eth_port) { 275 cmd->base.autoneg = eth_port->aneg != NFP_ANEG_DISABLED ? 276 AUTONEG_ENABLE : AUTONEG_DISABLE; 277 nfp_net_set_fec_link_mode(eth_port, cmd); 278 } 279 280 if (!netif_carrier_ok(netdev)) 281 return 0; 282 283 /* Use link speed from ETH table if available, otherwise try the BAR */ 284 if (eth_port) { 285 cmd->base.port = eth_port->port_type; 286 cmd->base.speed = eth_port->speed; 287 cmd->base.duplex = DUPLEX_FULL; 288 return 0; 289 } 290 291 if (!nfp_netdev_is_nfp_net(netdev)) 292 return -EOPNOTSUPP; 293 nn = netdev_priv(netdev); 294 295 sts = nn_readl(nn, NFP_NET_CFG_STS); 296 297 ls = FIELD_GET(NFP_NET_CFG_STS_LINK_RATE, sts); 298 if (ls == NFP_NET_CFG_STS_LINK_RATE_UNSUPPORTED) 299 return -EOPNOTSUPP; 300 301 if (ls == NFP_NET_CFG_STS_LINK_RATE_UNKNOWN || 302 ls >= ARRAY_SIZE(ls_to_ethtool)) 303 return 0; 304 305 cmd->base.speed = ls_to_ethtool[ls]; 306 cmd->base.duplex = DUPLEX_FULL; 307 308 return 0; 309 } 310 311 static int 312 nfp_net_set_link_ksettings(struct net_device *netdev, 313 const struct ethtool_link_ksettings *cmd) 314 { 315 struct nfp_eth_table_port *eth_port; 316 struct nfp_port *port; 317 struct nfp_nsp *nsp; 318 int err; 319 320 port = nfp_port_from_netdev(netdev); 321 eth_port = __nfp_port_get_eth_port(port); 322 if (!eth_port) 323 return -EOPNOTSUPP; 324 325 if (netif_running(netdev)) { 326 netdev_warn(netdev, "Changing settings not allowed on an active interface. It may cause the port to be disabled until driver reload.\n"); 327 return -EBUSY; 328 } 329 330 nsp = nfp_eth_config_start(port->app->cpp, eth_port->index); 331 if (IS_ERR(nsp)) 332 return PTR_ERR(nsp); 333 334 err = __nfp_eth_set_aneg(nsp, cmd->base.autoneg == AUTONEG_ENABLE ? 335 NFP_ANEG_AUTO : NFP_ANEG_DISABLED); 336 if (err) 337 goto err_bad_set; 338 if (cmd->base.speed != SPEED_UNKNOWN) { 339 u32 speed = cmd->base.speed / eth_port->lanes; 340 341 err = __nfp_eth_set_speed(nsp, speed); 342 if (err) 343 goto err_bad_set; 344 } 345 346 err = nfp_eth_config_commit_end(nsp); 347 if (err > 0) 348 return 0; /* no change */ 349 350 nfp_net_refresh_port_table(port); 351 352 return err; 353 354 err_bad_set: 355 nfp_eth_config_cleanup_end(nsp); 356 return err; 357 } 358 359 static void nfp_net_get_ringparam(struct net_device *netdev, 360 struct ethtool_ringparam *ring) 361 { 362 struct nfp_net *nn = netdev_priv(netdev); 363 364 ring->rx_max_pending = NFP_NET_MAX_RX_DESCS; 365 ring->tx_max_pending = NFP_NET_MAX_TX_DESCS; 366 ring->rx_pending = nn->dp.rxd_cnt; 367 ring->tx_pending = nn->dp.txd_cnt; 368 } 369 370 static int nfp_net_set_ring_size(struct nfp_net *nn, u32 rxd_cnt, u32 txd_cnt) 371 { 372 struct nfp_net_dp *dp; 373 374 dp = nfp_net_clone_dp(nn); 375 if (!dp) 376 return -ENOMEM; 377 378 dp->rxd_cnt = rxd_cnt; 379 dp->txd_cnt = txd_cnt; 380 381 return nfp_net_ring_reconfig(nn, dp, NULL); 382 } 383 384 static int nfp_net_set_ringparam(struct net_device *netdev, 385 struct ethtool_ringparam *ring) 386 { 387 struct nfp_net *nn = netdev_priv(netdev); 388 u32 rxd_cnt, txd_cnt; 389 390 /* We don't have separate queues/rings for small/large frames. */ 391 if (ring->rx_mini_pending || ring->rx_jumbo_pending) 392 return -EINVAL; 393 394 /* Round up to supported values */ 395 rxd_cnt = roundup_pow_of_two(ring->rx_pending); 396 txd_cnt = roundup_pow_of_two(ring->tx_pending); 397 398 if (rxd_cnt < NFP_NET_MIN_RX_DESCS || rxd_cnt > NFP_NET_MAX_RX_DESCS || 399 txd_cnt < NFP_NET_MIN_TX_DESCS || txd_cnt > NFP_NET_MAX_TX_DESCS) 400 return -EINVAL; 401 402 if (nn->dp.rxd_cnt == rxd_cnt && nn->dp.txd_cnt == txd_cnt) 403 return 0; 404 405 nn_dbg(nn, "Change ring size: RxQ %u->%u, TxQ %u->%u\n", 406 nn->dp.rxd_cnt, rxd_cnt, nn->dp.txd_cnt, txd_cnt); 407 408 return nfp_net_set_ring_size(nn, rxd_cnt, txd_cnt); 409 } 410 411 __printf(2, 3) u8 *nfp_pr_et(u8 *data, const char *fmt, ...) 412 { 413 va_list args; 414 415 va_start(args, fmt); 416 vsnprintf(data, ETH_GSTRING_LEN, fmt, args); 417 va_end(args); 418 419 return data + ETH_GSTRING_LEN; 420 } 421 422 static unsigned int nfp_vnic_get_sw_stats_count(struct net_device *netdev) 423 { 424 struct nfp_net *nn = netdev_priv(netdev); 425 426 return NN_RVEC_GATHER_STATS + nn->max_r_vecs * NN_RVEC_PER_Q_STATS; 427 } 428 429 static u8 *nfp_vnic_get_sw_stats_strings(struct net_device *netdev, u8 *data) 430 { 431 struct nfp_net *nn = netdev_priv(netdev); 432 int i; 433 434 for (i = 0; i < nn->max_r_vecs; i++) { 435 data = nfp_pr_et(data, "rvec_%u_rx_pkts", i); 436 data = nfp_pr_et(data, "rvec_%u_tx_pkts", i); 437 data = nfp_pr_et(data, "rvec_%u_tx_busy", i); 438 } 439 440 data = nfp_pr_et(data, "hw_rx_csum_ok"); 441 data = nfp_pr_et(data, "hw_rx_csum_inner_ok"); 442 data = nfp_pr_et(data, "hw_rx_csum_complete"); 443 data = nfp_pr_et(data, "hw_rx_csum_err"); 444 data = nfp_pr_et(data, "rx_replace_buf_alloc_fail"); 445 data = nfp_pr_et(data, "hw_tx_csum"); 446 data = nfp_pr_et(data, "hw_tx_inner_csum"); 447 data = nfp_pr_et(data, "tx_gather"); 448 data = nfp_pr_et(data, "tx_lso"); 449 450 return data; 451 } 452 453 static u64 *nfp_vnic_get_sw_stats(struct net_device *netdev, u64 *data) 454 { 455 u64 gathered_stats[NN_RVEC_GATHER_STATS] = {}; 456 struct nfp_net *nn = netdev_priv(netdev); 457 u64 tmp[NN_RVEC_GATHER_STATS]; 458 unsigned int i, j; 459 460 for (i = 0; i < nn->max_r_vecs; i++) { 461 unsigned int start; 462 463 do { 464 start = u64_stats_fetch_begin(&nn->r_vecs[i].rx_sync); 465 data[0] = nn->r_vecs[i].rx_pkts; 466 tmp[0] = nn->r_vecs[i].hw_csum_rx_ok; 467 tmp[1] = nn->r_vecs[i].hw_csum_rx_inner_ok; 468 tmp[2] = nn->r_vecs[i].hw_csum_rx_complete; 469 tmp[3] = nn->r_vecs[i].hw_csum_rx_error; 470 tmp[4] = nn->r_vecs[i].rx_replace_buf_alloc_fail; 471 } while (u64_stats_fetch_retry(&nn->r_vecs[i].rx_sync, start)); 472 473 do { 474 start = u64_stats_fetch_begin(&nn->r_vecs[i].tx_sync); 475 data[1] = nn->r_vecs[i].tx_pkts; 476 data[2] = nn->r_vecs[i].tx_busy; 477 tmp[5] = nn->r_vecs[i].hw_csum_tx; 478 tmp[6] = nn->r_vecs[i].hw_csum_tx_inner; 479 tmp[7] = nn->r_vecs[i].tx_gather; 480 tmp[8] = nn->r_vecs[i].tx_lso; 481 } while (u64_stats_fetch_retry(&nn->r_vecs[i].tx_sync, start)); 482 483 data += NN_RVEC_PER_Q_STATS; 484 485 for (j = 0; j < NN_RVEC_GATHER_STATS; j++) 486 gathered_stats[j] += tmp[j]; 487 } 488 489 for (j = 0; j < NN_RVEC_GATHER_STATS; j++) 490 *data++ = gathered_stats[j]; 491 492 return data; 493 } 494 495 static unsigned int nfp_vnic_get_hw_stats_count(unsigned int num_vecs) 496 { 497 return NN_ET_GLOBAL_STATS_LEN + num_vecs * 4; 498 } 499 500 static u8 * 501 nfp_vnic_get_hw_stats_strings(u8 *data, unsigned int num_vecs, bool repr) 502 { 503 int swap_off, i; 504 505 BUILD_BUG_ON(NN_ET_GLOBAL_STATS_LEN < NN_ET_SWITCH_STATS_LEN * 2); 506 /* If repr is true first add SWITCH_STATS_LEN and then subtract it 507 * effectively swapping the RX and TX statistics (giving us the RX 508 * and TX from perspective of the switch). 509 */ 510 swap_off = repr * NN_ET_SWITCH_STATS_LEN; 511 512 for (i = 0; i < NN_ET_SWITCH_STATS_LEN; i++) 513 data = nfp_pr_et(data, nfp_net_et_stats[i + swap_off].name); 514 515 for (i = NN_ET_SWITCH_STATS_LEN; i < NN_ET_SWITCH_STATS_LEN * 2; i++) 516 data = nfp_pr_et(data, nfp_net_et_stats[i - swap_off].name); 517 518 for (i = NN_ET_SWITCH_STATS_LEN * 2; i < NN_ET_GLOBAL_STATS_LEN; i++) 519 data = nfp_pr_et(data, nfp_net_et_stats[i].name); 520 521 for (i = 0; i < num_vecs; i++) { 522 data = nfp_pr_et(data, "rxq_%u_pkts", i); 523 data = nfp_pr_et(data, "rxq_%u_bytes", i); 524 data = nfp_pr_et(data, "txq_%u_pkts", i); 525 data = nfp_pr_et(data, "txq_%u_bytes", i); 526 } 527 528 return data; 529 } 530 531 static u64 * 532 nfp_vnic_get_hw_stats(u64 *data, u8 __iomem *mem, unsigned int num_vecs) 533 { 534 unsigned int i; 535 536 for (i = 0; i < NN_ET_GLOBAL_STATS_LEN; i++) 537 *data++ = readq(mem + nfp_net_et_stats[i].off); 538 539 for (i = 0; i < num_vecs; i++) { 540 *data++ = readq(mem + NFP_NET_CFG_RXR_STATS(i)); 541 *data++ = readq(mem + NFP_NET_CFG_RXR_STATS(i) + 8); 542 *data++ = readq(mem + NFP_NET_CFG_TXR_STATS(i)); 543 *data++ = readq(mem + NFP_NET_CFG_TXR_STATS(i) + 8); 544 } 545 546 return data; 547 } 548 549 static unsigned int nfp_mac_get_stats_count(struct net_device *netdev) 550 { 551 struct nfp_port *port; 552 553 port = nfp_port_from_netdev(netdev); 554 if (!__nfp_port_get_eth_port(port) || !port->eth_stats) 555 return 0; 556 557 return ARRAY_SIZE(nfp_mac_et_stats); 558 } 559 560 static u8 *nfp_mac_get_stats_strings(struct net_device *netdev, u8 *data) 561 { 562 struct nfp_port *port; 563 unsigned int i; 564 565 port = nfp_port_from_netdev(netdev); 566 if (!__nfp_port_get_eth_port(port) || !port->eth_stats) 567 return data; 568 569 for (i = 0; i < ARRAY_SIZE(nfp_mac_et_stats); i++) 570 data = nfp_pr_et(data, "mac.%s", nfp_mac_et_stats[i].name); 571 572 return data; 573 } 574 575 static u64 *nfp_mac_get_stats(struct net_device *netdev, u64 *data) 576 { 577 struct nfp_port *port; 578 unsigned int i; 579 580 port = nfp_port_from_netdev(netdev); 581 if (!__nfp_port_get_eth_port(port) || !port->eth_stats) 582 return data; 583 584 for (i = 0; i < ARRAY_SIZE(nfp_mac_et_stats); i++) 585 *data++ = readq(port->eth_stats + nfp_mac_et_stats[i].off); 586 587 return data; 588 } 589 590 static void nfp_net_get_strings(struct net_device *netdev, 591 u32 stringset, u8 *data) 592 { 593 struct nfp_net *nn = netdev_priv(netdev); 594 595 switch (stringset) { 596 case ETH_SS_STATS: 597 data = nfp_vnic_get_sw_stats_strings(netdev, data); 598 data = nfp_vnic_get_hw_stats_strings(data, nn->max_r_vecs, 599 false); 600 data = nfp_mac_get_stats_strings(netdev, data); 601 data = nfp_app_port_get_stats_strings(nn->port, data); 602 break; 603 } 604 } 605 606 static void 607 nfp_net_get_stats(struct net_device *netdev, struct ethtool_stats *stats, 608 u64 *data) 609 { 610 struct nfp_net *nn = netdev_priv(netdev); 611 612 data = nfp_vnic_get_sw_stats(netdev, data); 613 data = nfp_vnic_get_hw_stats(data, nn->dp.ctrl_bar, nn->max_r_vecs); 614 data = nfp_mac_get_stats(netdev, data); 615 data = nfp_app_port_get_stats(nn->port, data); 616 } 617 618 static int nfp_net_get_sset_count(struct net_device *netdev, int sset) 619 { 620 struct nfp_net *nn = netdev_priv(netdev); 621 622 switch (sset) { 623 case ETH_SS_STATS: 624 return nfp_vnic_get_sw_stats_count(netdev) + 625 nfp_vnic_get_hw_stats_count(nn->max_r_vecs) + 626 nfp_mac_get_stats_count(netdev) + 627 nfp_app_port_get_stats_count(nn->port); 628 default: 629 return -EOPNOTSUPP; 630 } 631 } 632 633 static void nfp_port_get_strings(struct net_device *netdev, 634 u32 stringset, u8 *data) 635 { 636 struct nfp_port *port = nfp_port_from_netdev(netdev); 637 638 switch (stringset) { 639 case ETH_SS_STATS: 640 if (nfp_port_is_vnic(port)) 641 data = nfp_vnic_get_hw_stats_strings(data, 0, true); 642 else 643 data = nfp_mac_get_stats_strings(netdev, data); 644 data = nfp_app_port_get_stats_strings(port, data); 645 break; 646 } 647 } 648 649 static void 650 nfp_port_get_stats(struct net_device *netdev, struct ethtool_stats *stats, 651 u64 *data) 652 { 653 struct nfp_port *port = nfp_port_from_netdev(netdev); 654 655 if (nfp_port_is_vnic(port)) 656 data = nfp_vnic_get_hw_stats(data, port->vnic, 0); 657 else 658 data = nfp_mac_get_stats(netdev, data); 659 data = nfp_app_port_get_stats(port, data); 660 } 661 662 static int nfp_port_get_sset_count(struct net_device *netdev, int sset) 663 { 664 struct nfp_port *port = nfp_port_from_netdev(netdev); 665 unsigned int count; 666 667 switch (sset) { 668 case ETH_SS_STATS: 669 if (nfp_port_is_vnic(port)) 670 count = nfp_vnic_get_hw_stats_count(0); 671 else 672 count = nfp_mac_get_stats_count(netdev); 673 count += nfp_app_port_get_stats_count(port); 674 return count; 675 default: 676 return -EOPNOTSUPP; 677 } 678 } 679 680 static int nfp_port_fec_ethtool_to_nsp(u32 fec) 681 { 682 switch (fec) { 683 case ETHTOOL_FEC_AUTO: 684 return NFP_FEC_AUTO_BIT; 685 case ETHTOOL_FEC_OFF: 686 return NFP_FEC_DISABLED_BIT; 687 case ETHTOOL_FEC_RS: 688 return NFP_FEC_REED_SOLOMON_BIT; 689 case ETHTOOL_FEC_BASER: 690 return NFP_FEC_BASER_BIT; 691 default: 692 /* NSP only supports a single mode at a time */ 693 return -EOPNOTSUPP; 694 } 695 } 696 697 static u32 nfp_port_fec_nsp_to_ethtool(u32 fec) 698 { 699 u32 result = 0; 700 701 if (fec & NFP_FEC_AUTO) 702 result |= ETHTOOL_FEC_AUTO; 703 if (fec & NFP_FEC_BASER) 704 result |= ETHTOOL_FEC_BASER; 705 if (fec & NFP_FEC_REED_SOLOMON) 706 result |= ETHTOOL_FEC_RS; 707 if (fec & NFP_FEC_DISABLED) 708 result |= ETHTOOL_FEC_OFF; 709 710 return result ?: ETHTOOL_FEC_NONE; 711 } 712 713 static int 714 nfp_port_get_fecparam(struct net_device *netdev, 715 struct ethtool_fecparam *param) 716 { 717 struct nfp_eth_table_port *eth_port; 718 struct nfp_port *port; 719 720 param->active_fec = ETHTOOL_FEC_NONE_BIT; 721 param->fec = ETHTOOL_FEC_NONE_BIT; 722 723 port = nfp_port_from_netdev(netdev); 724 eth_port = nfp_port_get_eth_port(port); 725 if (!eth_port) 726 return -EOPNOTSUPP; 727 728 if (!nfp_eth_can_support_fec(eth_port)) 729 return 0; 730 731 param->fec = nfp_port_fec_nsp_to_ethtool(eth_port->fec_modes_supported); 732 param->active_fec = nfp_port_fec_nsp_to_ethtool(eth_port->fec); 733 734 return 0; 735 } 736 737 static int 738 nfp_port_set_fecparam(struct net_device *netdev, 739 struct ethtool_fecparam *param) 740 { 741 struct nfp_eth_table_port *eth_port; 742 struct nfp_port *port; 743 int err, fec; 744 745 port = nfp_port_from_netdev(netdev); 746 eth_port = nfp_port_get_eth_port(port); 747 if (!eth_port) 748 return -EOPNOTSUPP; 749 750 if (!nfp_eth_can_support_fec(eth_port)) 751 return -EOPNOTSUPP; 752 753 fec = nfp_port_fec_ethtool_to_nsp(param->fec); 754 if (fec < 0) 755 return fec; 756 757 err = nfp_eth_set_fec(port->app->cpp, eth_port->index, fec); 758 if (!err) 759 /* Only refresh if we did something */ 760 nfp_net_refresh_port_table(port); 761 762 return err < 0 ? err : 0; 763 } 764 765 /* RX network flow classification (RSS, filters, etc) 766 */ 767 static u32 ethtool_flow_to_nfp_flag(u32 flow_type) 768 { 769 static const u32 xlate_ethtool_to_nfp[IPV6_FLOW + 1] = { 770 [TCP_V4_FLOW] = NFP_NET_CFG_RSS_IPV4_TCP, 771 [TCP_V6_FLOW] = NFP_NET_CFG_RSS_IPV6_TCP, 772 [UDP_V4_FLOW] = NFP_NET_CFG_RSS_IPV4_UDP, 773 [UDP_V6_FLOW] = NFP_NET_CFG_RSS_IPV6_UDP, 774 [IPV4_FLOW] = NFP_NET_CFG_RSS_IPV4, 775 [IPV6_FLOW] = NFP_NET_CFG_RSS_IPV6, 776 }; 777 778 if (flow_type >= ARRAY_SIZE(xlate_ethtool_to_nfp)) 779 return 0; 780 781 return xlate_ethtool_to_nfp[flow_type]; 782 } 783 784 static int nfp_net_get_rss_hash_opts(struct nfp_net *nn, 785 struct ethtool_rxnfc *cmd) 786 { 787 u32 nfp_rss_flag; 788 789 cmd->data = 0; 790 791 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY)) 792 return -EOPNOTSUPP; 793 794 nfp_rss_flag = ethtool_flow_to_nfp_flag(cmd->flow_type); 795 if (!nfp_rss_flag) 796 return -EINVAL; 797 798 cmd->data |= RXH_IP_SRC | RXH_IP_DST; 799 if (nn->rss_cfg & nfp_rss_flag) 800 cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3; 801 802 return 0; 803 } 804 805 static int nfp_net_get_rxnfc(struct net_device *netdev, 806 struct ethtool_rxnfc *cmd, u32 *rule_locs) 807 { 808 struct nfp_net *nn = netdev_priv(netdev); 809 810 switch (cmd->cmd) { 811 case ETHTOOL_GRXRINGS: 812 cmd->data = nn->dp.num_rx_rings; 813 return 0; 814 case ETHTOOL_GRXFH: 815 return nfp_net_get_rss_hash_opts(nn, cmd); 816 default: 817 return -EOPNOTSUPP; 818 } 819 } 820 821 static int nfp_net_set_rss_hash_opt(struct nfp_net *nn, 822 struct ethtool_rxnfc *nfc) 823 { 824 u32 new_rss_cfg = nn->rss_cfg; 825 u32 nfp_rss_flag; 826 int err; 827 828 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY)) 829 return -EOPNOTSUPP; 830 831 /* RSS only supports IP SA/DA and L4 src/dst ports */ 832 if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST | 833 RXH_L4_B_0_1 | RXH_L4_B_2_3)) 834 return -EINVAL; 835 836 /* We need at least the IP SA/DA fields for hashing */ 837 if (!(nfc->data & RXH_IP_SRC) || 838 !(nfc->data & RXH_IP_DST)) 839 return -EINVAL; 840 841 nfp_rss_flag = ethtool_flow_to_nfp_flag(nfc->flow_type); 842 if (!nfp_rss_flag) 843 return -EINVAL; 844 845 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) { 846 case 0: 847 new_rss_cfg &= ~nfp_rss_flag; 848 break; 849 case (RXH_L4_B_0_1 | RXH_L4_B_2_3): 850 new_rss_cfg |= nfp_rss_flag; 851 break; 852 default: 853 return -EINVAL; 854 } 855 856 new_rss_cfg |= FIELD_PREP(NFP_NET_CFG_RSS_HFUNC, nn->rss_hfunc); 857 new_rss_cfg |= NFP_NET_CFG_RSS_MASK; 858 859 if (new_rss_cfg == nn->rss_cfg) 860 return 0; 861 862 writel(new_rss_cfg, nn->dp.ctrl_bar + NFP_NET_CFG_RSS_CTRL); 863 err = nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_RSS); 864 if (err) 865 return err; 866 867 nn->rss_cfg = new_rss_cfg; 868 869 nn_dbg(nn, "Changed RSS config to 0x%x\n", nn->rss_cfg); 870 return 0; 871 } 872 873 static int nfp_net_set_rxnfc(struct net_device *netdev, 874 struct ethtool_rxnfc *cmd) 875 { 876 struct nfp_net *nn = netdev_priv(netdev); 877 878 switch (cmd->cmd) { 879 case ETHTOOL_SRXFH: 880 return nfp_net_set_rss_hash_opt(nn, cmd); 881 default: 882 return -EOPNOTSUPP; 883 } 884 } 885 886 static u32 nfp_net_get_rxfh_indir_size(struct net_device *netdev) 887 { 888 struct nfp_net *nn = netdev_priv(netdev); 889 890 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY)) 891 return 0; 892 893 return ARRAY_SIZE(nn->rss_itbl); 894 } 895 896 static u32 nfp_net_get_rxfh_key_size(struct net_device *netdev) 897 { 898 struct nfp_net *nn = netdev_priv(netdev); 899 900 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY)) 901 return -EOPNOTSUPP; 902 903 return nfp_net_rss_key_sz(nn); 904 } 905 906 static int nfp_net_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key, 907 u8 *hfunc) 908 { 909 struct nfp_net *nn = netdev_priv(netdev); 910 int i; 911 912 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY)) 913 return -EOPNOTSUPP; 914 915 if (indir) 916 for (i = 0; i < ARRAY_SIZE(nn->rss_itbl); i++) 917 indir[i] = nn->rss_itbl[i]; 918 if (key) 919 memcpy(key, nn->rss_key, nfp_net_rss_key_sz(nn)); 920 if (hfunc) { 921 *hfunc = nn->rss_hfunc; 922 if (*hfunc >= 1 << ETH_RSS_HASH_FUNCS_COUNT) 923 *hfunc = ETH_RSS_HASH_UNKNOWN; 924 } 925 926 return 0; 927 } 928 929 static int nfp_net_set_rxfh(struct net_device *netdev, 930 const u32 *indir, const u8 *key, 931 const u8 hfunc) 932 { 933 struct nfp_net *nn = netdev_priv(netdev); 934 int i; 935 936 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY) || 937 !(hfunc == ETH_RSS_HASH_NO_CHANGE || hfunc == nn->rss_hfunc)) 938 return -EOPNOTSUPP; 939 940 if (!key && !indir) 941 return 0; 942 943 if (key) { 944 memcpy(nn->rss_key, key, nfp_net_rss_key_sz(nn)); 945 nfp_net_rss_write_key(nn); 946 } 947 if (indir) { 948 for (i = 0; i < ARRAY_SIZE(nn->rss_itbl); i++) 949 nn->rss_itbl[i] = indir[i]; 950 951 nfp_net_rss_write_itbl(nn); 952 } 953 954 return nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_RSS); 955 } 956 957 /* Dump BAR registers 958 */ 959 static int nfp_net_get_regs_len(struct net_device *netdev) 960 { 961 return NFP_NET_CFG_BAR_SZ; 962 } 963 964 static void nfp_net_get_regs(struct net_device *netdev, 965 struct ethtool_regs *regs, void *p) 966 { 967 struct nfp_net *nn = netdev_priv(netdev); 968 u32 *regs_buf = p; 969 int i; 970 971 regs->version = nn_readl(nn, NFP_NET_CFG_VERSION); 972 973 for (i = 0; i < NFP_NET_CFG_BAR_SZ / sizeof(u32); i++) 974 regs_buf[i] = readl(nn->dp.ctrl_bar + (i * sizeof(u32))); 975 } 976 977 static int nfp_net_get_coalesce(struct net_device *netdev, 978 struct ethtool_coalesce *ec) 979 { 980 struct nfp_net *nn = netdev_priv(netdev); 981 982 if (!(nn->cap & NFP_NET_CFG_CTRL_IRQMOD)) 983 return -EINVAL; 984 985 ec->rx_coalesce_usecs = nn->rx_coalesce_usecs; 986 ec->rx_max_coalesced_frames = nn->rx_coalesce_max_frames; 987 ec->tx_coalesce_usecs = nn->tx_coalesce_usecs; 988 ec->tx_max_coalesced_frames = nn->tx_coalesce_max_frames; 989 990 return 0; 991 } 992 993 /* Other debug dumps 994 */ 995 static int 996 nfp_dump_nsp_diag(struct nfp_app *app, struct ethtool_dump *dump, void *buffer) 997 { 998 struct nfp_resource *res; 999 int ret; 1000 1001 if (!app) 1002 return -EOPNOTSUPP; 1003 1004 dump->version = 1; 1005 dump->flag = NFP_DUMP_NSP_DIAG; 1006 1007 res = nfp_resource_acquire(app->cpp, NFP_RESOURCE_NSP_DIAG); 1008 if (IS_ERR(res)) 1009 return PTR_ERR(res); 1010 1011 if (buffer) { 1012 if (dump->len != nfp_resource_size(res)) { 1013 ret = -EINVAL; 1014 goto exit_release; 1015 } 1016 1017 ret = nfp_cpp_read(app->cpp, nfp_resource_cpp_id(res), 1018 nfp_resource_address(res), 1019 buffer, dump->len); 1020 if (ret != dump->len) 1021 ret = ret < 0 ? ret : -EIO; 1022 else 1023 ret = 0; 1024 } else { 1025 dump->len = nfp_resource_size(res); 1026 ret = 0; 1027 } 1028 exit_release: 1029 nfp_resource_release(res); 1030 1031 return ret; 1032 } 1033 1034 /* Set the dump flag/level. Calculate the dump length for flag > 0 only (new TLV 1035 * based dumps), since flag 0 (default) calculates the length in 1036 * nfp_app_get_dump_flag(), and we need to support triggering a level 0 dump 1037 * without setting the flag first, for backward compatibility. 1038 */ 1039 static int nfp_app_set_dump(struct net_device *netdev, struct ethtool_dump *val) 1040 { 1041 struct nfp_app *app = nfp_app_from_netdev(netdev); 1042 s64 len; 1043 1044 if (!app) 1045 return -EOPNOTSUPP; 1046 1047 if (val->flag == NFP_DUMP_NSP_DIAG) { 1048 app->pf->dump_flag = val->flag; 1049 return 0; 1050 } 1051 1052 if (!app->pf->dumpspec) 1053 return -EOPNOTSUPP; 1054 1055 len = nfp_net_dump_calculate_size(app->pf, app->pf->dumpspec, 1056 val->flag); 1057 if (len < 0) 1058 return len; 1059 1060 app->pf->dump_flag = val->flag; 1061 app->pf->dump_len = len; 1062 1063 return 0; 1064 } 1065 1066 static int 1067 nfp_app_get_dump_flag(struct net_device *netdev, struct ethtool_dump *dump) 1068 { 1069 struct nfp_app *app = nfp_app_from_netdev(netdev); 1070 1071 if (!app) 1072 return -EOPNOTSUPP; 1073 1074 if (app->pf->dump_flag == NFP_DUMP_NSP_DIAG) 1075 return nfp_dump_nsp_diag(app, dump, NULL); 1076 1077 dump->flag = app->pf->dump_flag; 1078 dump->len = app->pf->dump_len; 1079 1080 return 0; 1081 } 1082 1083 static int 1084 nfp_app_get_dump_data(struct net_device *netdev, struct ethtool_dump *dump, 1085 void *buffer) 1086 { 1087 struct nfp_app *app = nfp_app_from_netdev(netdev); 1088 1089 if (!app) 1090 return -EOPNOTSUPP; 1091 1092 if (app->pf->dump_flag == NFP_DUMP_NSP_DIAG) 1093 return nfp_dump_nsp_diag(app, dump, buffer); 1094 1095 dump->flag = app->pf->dump_flag; 1096 dump->len = app->pf->dump_len; 1097 1098 return nfp_net_dump_populate_buffer(app->pf, app->pf->dumpspec, dump, 1099 buffer); 1100 } 1101 1102 static int 1103 nfp_port_get_module_info(struct net_device *netdev, 1104 struct ethtool_modinfo *modinfo) 1105 { 1106 struct nfp_eth_table_port *eth_port; 1107 struct nfp_port *port; 1108 unsigned int read_len; 1109 struct nfp_nsp *nsp; 1110 int err = 0; 1111 u8 data; 1112 1113 port = nfp_port_from_netdev(netdev); 1114 eth_port = nfp_port_get_eth_port(port); 1115 if (!eth_port) 1116 return -EOPNOTSUPP; 1117 1118 nsp = nfp_nsp_open(port->app->cpp); 1119 if (IS_ERR(nsp)) { 1120 err = PTR_ERR(nsp); 1121 netdev_err(netdev, "Failed to access the NSP: %d\n", err); 1122 return err; 1123 } 1124 1125 if (!nfp_nsp_has_read_module_eeprom(nsp)) { 1126 netdev_info(netdev, "reading module EEPROM not supported. Please update flash\n"); 1127 err = -EOPNOTSUPP; 1128 goto exit_close_nsp; 1129 } 1130 1131 switch (eth_port->interface) { 1132 case NFP_INTERFACE_SFP: 1133 case NFP_INTERFACE_SFP28: 1134 err = nfp_nsp_read_module_eeprom(nsp, eth_port->eth_index, 1135 SFP_SFF8472_COMPLIANCE, &data, 1136 1, &read_len); 1137 if (err < 0) 1138 goto exit_close_nsp; 1139 1140 if (!data) { 1141 modinfo->type = ETH_MODULE_SFF_8079; 1142 modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN; 1143 } else { 1144 modinfo->type = ETH_MODULE_SFF_8472; 1145 modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN; 1146 } 1147 break; 1148 case NFP_INTERFACE_QSFP: 1149 err = nfp_nsp_read_module_eeprom(nsp, eth_port->eth_index, 1150 SFP_SFF_REV_COMPLIANCE, &data, 1151 1, &read_len); 1152 if (err < 0) 1153 goto exit_close_nsp; 1154 1155 if (data < 0x3) { 1156 modinfo->type = ETH_MODULE_SFF_8436; 1157 modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN; 1158 } else { 1159 modinfo->type = ETH_MODULE_SFF_8636; 1160 modinfo->eeprom_len = ETH_MODULE_SFF_8636_LEN; 1161 } 1162 break; 1163 case NFP_INTERFACE_QSFP28: 1164 modinfo->type = ETH_MODULE_SFF_8636; 1165 modinfo->eeprom_len = ETH_MODULE_SFF_8636_LEN; 1166 break; 1167 default: 1168 netdev_err(netdev, "Unsupported module 0x%x detected\n", 1169 eth_port->interface); 1170 err = -EINVAL; 1171 } 1172 1173 exit_close_nsp: 1174 nfp_nsp_close(nsp); 1175 return err; 1176 } 1177 1178 static int 1179 nfp_port_get_module_eeprom(struct net_device *netdev, 1180 struct ethtool_eeprom *eeprom, u8 *data) 1181 { 1182 struct nfp_eth_table_port *eth_port; 1183 struct nfp_port *port; 1184 struct nfp_nsp *nsp; 1185 int err; 1186 1187 port = nfp_port_from_netdev(netdev); 1188 eth_port = __nfp_port_get_eth_port(port); 1189 if (!eth_port) 1190 return -EOPNOTSUPP; 1191 1192 nsp = nfp_nsp_open(port->app->cpp); 1193 if (IS_ERR(nsp)) { 1194 err = PTR_ERR(nsp); 1195 netdev_err(netdev, "Failed to access the NSP: %d\n", err); 1196 return err; 1197 } 1198 1199 if (!nfp_nsp_has_read_module_eeprom(nsp)) { 1200 netdev_info(netdev, "reading module EEPROM not supported. Please update flash\n"); 1201 err = -EOPNOTSUPP; 1202 goto exit_close_nsp; 1203 } 1204 1205 err = nfp_nsp_read_module_eeprom(nsp, eth_port->eth_index, 1206 eeprom->offset, data, eeprom->len, 1207 &eeprom->len); 1208 if (err < 0) { 1209 if (eeprom->len) { 1210 netdev_warn(netdev, 1211 "Incomplete read from module EEPROM: %d\n", 1212 err); 1213 err = 0; 1214 } else { 1215 netdev_err(netdev, 1216 "Reading from module EEPROM failed: %d\n", 1217 err); 1218 } 1219 } 1220 1221 exit_close_nsp: 1222 nfp_nsp_close(nsp); 1223 return err; 1224 } 1225 1226 static int nfp_net_set_coalesce(struct net_device *netdev, 1227 struct ethtool_coalesce *ec) 1228 { 1229 struct nfp_net *nn = netdev_priv(netdev); 1230 unsigned int factor; 1231 1232 if (ec->rx_coalesce_usecs_irq || 1233 ec->rx_max_coalesced_frames_irq || 1234 ec->tx_coalesce_usecs_irq || 1235 ec->tx_max_coalesced_frames_irq || 1236 ec->stats_block_coalesce_usecs || 1237 ec->use_adaptive_rx_coalesce || 1238 ec->use_adaptive_tx_coalesce || 1239 ec->pkt_rate_low || 1240 ec->rx_coalesce_usecs_low || 1241 ec->rx_max_coalesced_frames_low || 1242 ec->tx_coalesce_usecs_low || 1243 ec->tx_max_coalesced_frames_low || 1244 ec->pkt_rate_high || 1245 ec->rx_coalesce_usecs_high || 1246 ec->rx_max_coalesced_frames_high || 1247 ec->tx_coalesce_usecs_high || 1248 ec->tx_max_coalesced_frames_high || 1249 ec->rate_sample_interval) 1250 return -EOPNOTSUPP; 1251 1252 /* Compute factor used to convert coalesce '_usecs' parameters to 1253 * ME timestamp ticks. There are 16 ME clock cycles for each timestamp 1254 * count. 1255 */ 1256 factor = nn->me_freq_mhz / 16; 1257 1258 /* Each pair of (usecs, max_frames) fields specifies that interrupts 1259 * should be coalesced until 1260 * (usecs > 0 && time_since_first_completion >= usecs) || 1261 * (max_frames > 0 && completed_frames >= max_frames) 1262 * 1263 * It is illegal to set both usecs and max_frames to zero as this would 1264 * cause interrupts to never be generated. To disable coalescing, set 1265 * usecs = 0 and max_frames = 1. 1266 * 1267 * Some implementations ignore the value of max_frames and use the 1268 * condition time_since_first_completion >= usecs 1269 */ 1270 1271 if (!(nn->cap & NFP_NET_CFG_CTRL_IRQMOD)) 1272 return -EINVAL; 1273 1274 /* ensure valid configuration */ 1275 if (!ec->rx_coalesce_usecs && !ec->rx_max_coalesced_frames) 1276 return -EINVAL; 1277 1278 if (!ec->tx_coalesce_usecs && !ec->tx_max_coalesced_frames) 1279 return -EINVAL; 1280 1281 if (ec->rx_coalesce_usecs * factor >= ((1 << 16) - 1)) 1282 return -EINVAL; 1283 1284 if (ec->tx_coalesce_usecs * factor >= ((1 << 16) - 1)) 1285 return -EINVAL; 1286 1287 if (ec->rx_max_coalesced_frames >= ((1 << 16) - 1)) 1288 return -EINVAL; 1289 1290 if (ec->tx_max_coalesced_frames >= ((1 << 16) - 1)) 1291 return -EINVAL; 1292 1293 /* configuration is valid */ 1294 nn->rx_coalesce_usecs = ec->rx_coalesce_usecs; 1295 nn->rx_coalesce_max_frames = ec->rx_max_coalesced_frames; 1296 nn->tx_coalesce_usecs = ec->tx_coalesce_usecs; 1297 nn->tx_coalesce_max_frames = ec->tx_max_coalesced_frames; 1298 1299 /* write configuration to device */ 1300 nfp_net_coalesce_write_cfg(nn); 1301 return nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_IRQMOD); 1302 } 1303 1304 static void nfp_net_get_channels(struct net_device *netdev, 1305 struct ethtool_channels *channel) 1306 { 1307 struct nfp_net *nn = netdev_priv(netdev); 1308 unsigned int num_tx_rings; 1309 1310 num_tx_rings = nn->dp.num_tx_rings; 1311 if (nn->dp.xdp_prog) 1312 num_tx_rings -= nn->dp.num_rx_rings; 1313 1314 channel->max_rx = min(nn->max_rx_rings, nn->max_r_vecs); 1315 channel->max_tx = min(nn->max_tx_rings, nn->max_r_vecs); 1316 channel->max_combined = min(channel->max_rx, channel->max_tx); 1317 channel->max_other = NFP_NET_NON_Q_VECTORS; 1318 channel->combined_count = min(nn->dp.num_rx_rings, num_tx_rings); 1319 channel->rx_count = nn->dp.num_rx_rings - channel->combined_count; 1320 channel->tx_count = num_tx_rings - channel->combined_count; 1321 channel->other_count = NFP_NET_NON_Q_VECTORS; 1322 } 1323 1324 static int nfp_net_set_num_rings(struct nfp_net *nn, unsigned int total_rx, 1325 unsigned int total_tx) 1326 { 1327 struct nfp_net_dp *dp; 1328 1329 dp = nfp_net_clone_dp(nn); 1330 if (!dp) 1331 return -ENOMEM; 1332 1333 dp->num_rx_rings = total_rx; 1334 dp->num_tx_rings = total_tx; 1335 /* nfp_net_check_config() will catch num_tx_rings > nn->max_tx_rings */ 1336 if (dp->xdp_prog) 1337 dp->num_tx_rings += total_rx; 1338 1339 return nfp_net_ring_reconfig(nn, dp, NULL); 1340 } 1341 1342 static int nfp_net_set_channels(struct net_device *netdev, 1343 struct ethtool_channels *channel) 1344 { 1345 struct nfp_net *nn = netdev_priv(netdev); 1346 unsigned int total_rx, total_tx; 1347 1348 /* Reject unsupported */ 1349 if (!channel->combined_count || 1350 channel->other_count != NFP_NET_NON_Q_VECTORS || 1351 (channel->rx_count && channel->tx_count)) 1352 return -EINVAL; 1353 1354 total_rx = channel->combined_count + channel->rx_count; 1355 total_tx = channel->combined_count + channel->tx_count; 1356 1357 if (total_rx > min(nn->max_rx_rings, nn->max_r_vecs) || 1358 total_tx > min(nn->max_tx_rings, nn->max_r_vecs)) 1359 return -EINVAL; 1360 1361 return nfp_net_set_num_rings(nn, total_rx, total_tx); 1362 } 1363 1364 static const struct ethtool_ops nfp_net_ethtool_ops = { 1365 .get_drvinfo = nfp_net_get_drvinfo, 1366 .get_link = ethtool_op_get_link, 1367 .get_ringparam = nfp_net_get_ringparam, 1368 .set_ringparam = nfp_net_set_ringparam, 1369 .get_strings = nfp_net_get_strings, 1370 .get_ethtool_stats = nfp_net_get_stats, 1371 .get_sset_count = nfp_net_get_sset_count, 1372 .get_rxnfc = nfp_net_get_rxnfc, 1373 .set_rxnfc = nfp_net_set_rxnfc, 1374 .get_rxfh_indir_size = nfp_net_get_rxfh_indir_size, 1375 .get_rxfh_key_size = nfp_net_get_rxfh_key_size, 1376 .get_rxfh = nfp_net_get_rxfh, 1377 .set_rxfh = nfp_net_set_rxfh, 1378 .get_regs_len = nfp_net_get_regs_len, 1379 .get_regs = nfp_net_get_regs, 1380 .set_dump = nfp_app_set_dump, 1381 .get_dump_flag = nfp_app_get_dump_flag, 1382 .get_dump_data = nfp_app_get_dump_data, 1383 .get_module_info = nfp_port_get_module_info, 1384 .get_module_eeprom = nfp_port_get_module_eeprom, 1385 .get_coalesce = nfp_net_get_coalesce, 1386 .set_coalesce = nfp_net_set_coalesce, 1387 .get_channels = nfp_net_get_channels, 1388 .set_channels = nfp_net_set_channels, 1389 .get_link_ksettings = nfp_net_get_link_ksettings, 1390 .set_link_ksettings = nfp_net_set_link_ksettings, 1391 .get_fecparam = nfp_port_get_fecparam, 1392 .set_fecparam = nfp_port_set_fecparam, 1393 }; 1394 1395 const struct ethtool_ops nfp_port_ethtool_ops = { 1396 .get_drvinfo = nfp_app_get_drvinfo, 1397 .get_link = ethtool_op_get_link, 1398 .get_strings = nfp_port_get_strings, 1399 .get_ethtool_stats = nfp_port_get_stats, 1400 .get_sset_count = nfp_port_get_sset_count, 1401 .set_dump = nfp_app_set_dump, 1402 .get_dump_flag = nfp_app_get_dump_flag, 1403 .get_dump_data = nfp_app_get_dump_data, 1404 .get_module_info = nfp_port_get_module_info, 1405 .get_module_eeprom = nfp_port_get_module_eeprom, 1406 .get_link_ksettings = nfp_net_get_link_ksettings, 1407 .set_link_ksettings = nfp_net_set_link_ksettings, 1408 .get_fecparam = nfp_port_get_fecparam, 1409 .set_fecparam = nfp_port_set_fecparam, 1410 }; 1411 1412 void nfp_net_set_ethtool_ops(struct net_device *netdev) 1413 { 1414 netdev->ethtool_ops = &nfp_net_ethtool_ops; 1415 } 1416