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 13 154 #define NN_RVEC_PER_Q_STATS 3 155 #define NN_CTRL_PATH_STATS 1 156 157 #define SFP_SFF_REV_COMPLIANCE 1 158 159 static void nfp_net_get_nspinfo(struct nfp_app *app, char *version) 160 { 161 struct nfp_nsp *nsp; 162 163 if (!app) 164 return; 165 166 nsp = nfp_nsp_open(app->cpp); 167 if (IS_ERR(nsp)) 168 return; 169 170 snprintf(version, ETHTOOL_FWVERS_LEN, "%hu.%hu", 171 nfp_nsp_get_abi_ver_major(nsp), 172 nfp_nsp_get_abi_ver_minor(nsp)); 173 174 nfp_nsp_close(nsp); 175 } 176 177 static void 178 nfp_get_drvinfo(struct nfp_app *app, struct pci_dev *pdev, 179 const char *vnic_version, struct ethtool_drvinfo *drvinfo) 180 { 181 char nsp_version[ETHTOOL_FWVERS_LEN] = {}; 182 183 strlcpy(drvinfo->driver, pdev->driver->name, sizeof(drvinfo->driver)); 184 strlcpy(drvinfo->version, nfp_driver_version, sizeof(drvinfo->version)); 185 186 nfp_net_get_nspinfo(app, nsp_version); 187 snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version), 188 "%s %s %s %s", vnic_version, nsp_version, 189 nfp_app_mip_name(app), nfp_app_name(app)); 190 } 191 192 static void 193 nfp_net_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo) 194 { 195 char vnic_version[ETHTOOL_FWVERS_LEN] = {}; 196 struct nfp_net *nn = netdev_priv(netdev); 197 198 snprintf(vnic_version, sizeof(vnic_version), "%d.%d.%d.%d", 199 nn->fw_ver.resv, nn->fw_ver.class, 200 nn->fw_ver.major, nn->fw_ver.minor); 201 strlcpy(drvinfo->bus_info, pci_name(nn->pdev), 202 sizeof(drvinfo->bus_info)); 203 204 nfp_get_drvinfo(nn->app, nn->pdev, vnic_version, drvinfo); 205 } 206 207 static void 208 nfp_app_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo) 209 { 210 struct nfp_app *app = nfp_app_from_netdev(netdev); 211 212 strlcpy(drvinfo->bus_info, pci_name(app->pdev), 213 sizeof(drvinfo->bus_info)); 214 nfp_get_drvinfo(app, app->pdev, "*", drvinfo); 215 } 216 217 static void 218 nfp_net_set_fec_link_mode(struct nfp_eth_table_port *eth_port, 219 struct ethtool_link_ksettings *c) 220 { 221 unsigned int modes; 222 223 ethtool_link_ksettings_add_link_mode(c, supported, FEC_NONE); 224 if (!nfp_eth_can_support_fec(eth_port)) { 225 ethtool_link_ksettings_add_link_mode(c, advertising, FEC_NONE); 226 return; 227 } 228 229 modes = nfp_eth_supported_fec_modes(eth_port); 230 if (modes & NFP_FEC_BASER) { 231 ethtool_link_ksettings_add_link_mode(c, supported, FEC_BASER); 232 ethtool_link_ksettings_add_link_mode(c, advertising, FEC_BASER); 233 } 234 235 if (modes & NFP_FEC_REED_SOLOMON) { 236 ethtool_link_ksettings_add_link_mode(c, supported, FEC_RS); 237 ethtool_link_ksettings_add_link_mode(c, advertising, FEC_RS); 238 } 239 } 240 241 /** 242 * nfp_net_get_link_ksettings - Get Link Speed settings 243 * @netdev: network interface device structure 244 * @cmd: ethtool command 245 * 246 * Reports speed settings based on info in the BAR provided by the fw. 247 */ 248 static int 249 nfp_net_get_link_ksettings(struct net_device *netdev, 250 struct ethtool_link_ksettings *cmd) 251 { 252 static const u32 ls_to_ethtool[] = { 253 [NFP_NET_CFG_STS_LINK_RATE_UNSUPPORTED] = 0, 254 [NFP_NET_CFG_STS_LINK_RATE_UNKNOWN] = SPEED_UNKNOWN, 255 [NFP_NET_CFG_STS_LINK_RATE_1G] = SPEED_1000, 256 [NFP_NET_CFG_STS_LINK_RATE_10G] = SPEED_10000, 257 [NFP_NET_CFG_STS_LINK_RATE_25G] = SPEED_25000, 258 [NFP_NET_CFG_STS_LINK_RATE_40G] = SPEED_40000, 259 [NFP_NET_CFG_STS_LINK_RATE_50G] = SPEED_50000, 260 [NFP_NET_CFG_STS_LINK_RATE_100G] = SPEED_100000, 261 }; 262 struct nfp_eth_table_port *eth_port; 263 struct nfp_port *port; 264 struct nfp_net *nn; 265 u32 sts, ls; 266 267 /* Init to unknowns */ 268 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE); 269 cmd->base.port = PORT_OTHER; 270 cmd->base.speed = SPEED_UNKNOWN; 271 cmd->base.duplex = DUPLEX_UNKNOWN; 272 273 port = nfp_port_from_netdev(netdev); 274 eth_port = nfp_port_get_eth_port(port); 275 if (eth_port) { 276 cmd->base.autoneg = eth_port->aneg != NFP_ANEG_DISABLED ? 277 AUTONEG_ENABLE : AUTONEG_DISABLE; 278 nfp_net_set_fec_link_mode(eth_port, cmd); 279 } 280 281 if (!netif_carrier_ok(netdev)) 282 return 0; 283 284 /* Use link speed from ETH table if available, otherwise try the BAR */ 285 if (eth_port) { 286 cmd->base.port = eth_port->port_type; 287 cmd->base.speed = eth_port->speed; 288 cmd->base.duplex = DUPLEX_FULL; 289 return 0; 290 } 291 292 if (!nfp_netdev_is_nfp_net(netdev)) 293 return -EOPNOTSUPP; 294 nn = netdev_priv(netdev); 295 296 sts = nn_readl(nn, NFP_NET_CFG_STS); 297 298 ls = FIELD_GET(NFP_NET_CFG_STS_LINK_RATE, sts); 299 if (ls == NFP_NET_CFG_STS_LINK_RATE_UNSUPPORTED) 300 return -EOPNOTSUPP; 301 302 if (ls == NFP_NET_CFG_STS_LINK_RATE_UNKNOWN || 303 ls >= ARRAY_SIZE(ls_to_ethtool)) 304 return 0; 305 306 cmd->base.speed = ls_to_ethtool[ls]; 307 cmd->base.duplex = DUPLEX_FULL; 308 309 return 0; 310 } 311 312 static int 313 nfp_net_set_link_ksettings(struct net_device *netdev, 314 const struct ethtool_link_ksettings *cmd) 315 { 316 struct nfp_eth_table_port *eth_port; 317 struct nfp_port *port; 318 struct nfp_nsp *nsp; 319 int err; 320 321 port = nfp_port_from_netdev(netdev); 322 eth_port = __nfp_port_get_eth_port(port); 323 if (!eth_port) 324 return -EOPNOTSUPP; 325 326 if (netif_running(netdev)) { 327 netdev_warn(netdev, "Changing settings not allowed on an active interface. It may cause the port to be disabled until driver reload.\n"); 328 return -EBUSY; 329 } 330 331 nsp = nfp_eth_config_start(port->app->cpp, eth_port->index); 332 if (IS_ERR(nsp)) 333 return PTR_ERR(nsp); 334 335 err = __nfp_eth_set_aneg(nsp, cmd->base.autoneg == AUTONEG_ENABLE ? 336 NFP_ANEG_AUTO : NFP_ANEG_DISABLED); 337 if (err) 338 goto err_bad_set; 339 if (cmd->base.speed != SPEED_UNKNOWN) { 340 u32 speed = cmd->base.speed / eth_port->lanes; 341 342 err = __nfp_eth_set_speed(nsp, speed); 343 if (err) 344 goto err_bad_set; 345 } 346 347 err = nfp_eth_config_commit_end(nsp); 348 if (err > 0) 349 return 0; /* no change */ 350 351 nfp_net_refresh_port_table(port); 352 353 return err; 354 355 err_bad_set: 356 nfp_eth_config_cleanup_end(nsp); 357 return err; 358 } 359 360 static void nfp_net_get_ringparam(struct net_device *netdev, 361 struct ethtool_ringparam *ring) 362 { 363 struct nfp_net *nn = netdev_priv(netdev); 364 365 ring->rx_max_pending = NFP_NET_MAX_RX_DESCS; 366 ring->tx_max_pending = NFP_NET_MAX_TX_DESCS; 367 ring->rx_pending = nn->dp.rxd_cnt; 368 ring->tx_pending = nn->dp.txd_cnt; 369 } 370 371 static int nfp_net_set_ring_size(struct nfp_net *nn, u32 rxd_cnt, u32 txd_cnt) 372 { 373 struct nfp_net_dp *dp; 374 375 dp = nfp_net_clone_dp(nn); 376 if (!dp) 377 return -ENOMEM; 378 379 dp->rxd_cnt = rxd_cnt; 380 dp->txd_cnt = txd_cnt; 381 382 return nfp_net_ring_reconfig(nn, dp, NULL); 383 } 384 385 static int nfp_net_set_ringparam(struct net_device *netdev, 386 struct ethtool_ringparam *ring) 387 { 388 struct nfp_net *nn = netdev_priv(netdev); 389 u32 rxd_cnt, txd_cnt; 390 391 /* We don't have separate queues/rings for small/large frames. */ 392 if (ring->rx_mini_pending || ring->rx_jumbo_pending) 393 return -EINVAL; 394 395 /* Round up to supported values */ 396 rxd_cnt = roundup_pow_of_two(ring->rx_pending); 397 txd_cnt = roundup_pow_of_two(ring->tx_pending); 398 399 if (rxd_cnt < NFP_NET_MIN_RX_DESCS || rxd_cnt > NFP_NET_MAX_RX_DESCS || 400 txd_cnt < NFP_NET_MIN_TX_DESCS || txd_cnt > NFP_NET_MAX_TX_DESCS) 401 return -EINVAL; 402 403 if (nn->dp.rxd_cnt == rxd_cnt && nn->dp.txd_cnt == txd_cnt) 404 return 0; 405 406 nn_dbg(nn, "Change ring size: RxQ %u->%u, TxQ %u->%u\n", 407 nn->dp.rxd_cnt, rxd_cnt, nn->dp.txd_cnt, txd_cnt); 408 409 return nfp_net_set_ring_size(nn, rxd_cnt, txd_cnt); 410 } 411 412 __printf(2, 3) u8 *nfp_pr_et(u8 *data, const char *fmt, ...) 413 { 414 va_list args; 415 416 va_start(args, fmt); 417 vsnprintf(data, ETH_GSTRING_LEN, fmt, args); 418 va_end(args); 419 420 return data + ETH_GSTRING_LEN; 421 } 422 423 static unsigned int nfp_vnic_get_sw_stats_count(struct net_device *netdev) 424 { 425 struct nfp_net *nn = netdev_priv(netdev); 426 427 return NN_RVEC_GATHER_STATS + nn->max_r_vecs * NN_RVEC_PER_Q_STATS + 428 NN_CTRL_PATH_STATS; 429 } 430 431 static u8 *nfp_vnic_get_sw_stats_strings(struct net_device *netdev, u8 *data) 432 { 433 struct nfp_net *nn = netdev_priv(netdev); 434 int i; 435 436 for (i = 0; i < nn->max_r_vecs; i++) { 437 data = nfp_pr_et(data, "rvec_%u_rx_pkts", i); 438 data = nfp_pr_et(data, "rvec_%u_tx_pkts", i); 439 data = nfp_pr_et(data, "rvec_%u_tx_busy", i); 440 } 441 442 data = nfp_pr_et(data, "hw_rx_csum_ok"); 443 data = nfp_pr_et(data, "hw_rx_csum_inner_ok"); 444 data = nfp_pr_et(data, "hw_rx_csum_complete"); 445 data = nfp_pr_et(data, "hw_rx_csum_err"); 446 data = nfp_pr_et(data, "rx_replace_buf_alloc_fail"); 447 data = nfp_pr_et(data, "rx_tls_decrypted"); 448 data = nfp_pr_et(data, "hw_tx_csum"); 449 data = nfp_pr_et(data, "hw_tx_inner_csum"); 450 data = nfp_pr_et(data, "tx_gather"); 451 data = nfp_pr_et(data, "tx_lso"); 452 data = nfp_pr_et(data, "tx_tls_encrypted"); 453 data = nfp_pr_et(data, "tx_tls_ooo"); 454 data = nfp_pr_et(data, "tx_tls_drop_no_sync_data"); 455 456 data = nfp_pr_et(data, "hw_tls_no_space"); 457 458 return data; 459 } 460 461 static u64 *nfp_vnic_get_sw_stats(struct net_device *netdev, u64 *data) 462 { 463 u64 gathered_stats[NN_RVEC_GATHER_STATS] = {}; 464 struct nfp_net *nn = netdev_priv(netdev); 465 u64 tmp[NN_RVEC_GATHER_STATS]; 466 unsigned int i, j; 467 468 for (i = 0; i < nn->max_r_vecs; i++) { 469 unsigned int start; 470 471 do { 472 start = u64_stats_fetch_begin(&nn->r_vecs[i].rx_sync); 473 data[0] = nn->r_vecs[i].rx_pkts; 474 tmp[0] = nn->r_vecs[i].hw_csum_rx_ok; 475 tmp[1] = nn->r_vecs[i].hw_csum_rx_inner_ok; 476 tmp[2] = nn->r_vecs[i].hw_csum_rx_complete; 477 tmp[3] = nn->r_vecs[i].hw_csum_rx_error; 478 tmp[4] = nn->r_vecs[i].rx_replace_buf_alloc_fail; 479 tmp[5] = nn->r_vecs[i].hw_tls_rx; 480 } while (u64_stats_fetch_retry(&nn->r_vecs[i].rx_sync, start)); 481 482 do { 483 start = u64_stats_fetch_begin(&nn->r_vecs[i].tx_sync); 484 data[1] = nn->r_vecs[i].tx_pkts; 485 data[2] = nn->r_vecs[i].tx_busy; 486 tmp[6] = nn->r_vecs[i].hw_csum_tx; 487 tmp[7] = nn->r_vecs[i].hw_csum_tx_inner; 488 tmp[8] = nn->r_vecs[i].tx_gather; 489 tmp[9] = nn->r_vecs[i].tx_lso; 490 tmp[10] = nn->r_vecs[i].hw_tls_tx; 491 tmp[11] = nn->r_vecs[i].tls_tx_fallback; 492 tmp[12] = nn->r_vecs[i].tls_tx_no_fallback; 493 } while (u64_stats_fetch_retry(&nn->r_vecs[i].tx_sync, start)); 494 495 data += NN_RVEC_PER_Q_STATS; 496 497 for (j = 0; j < NN_RVEC_GATHER_STATS; j++) 498 gathered_stats[j] += tmp[j]; 499 } 500 501 for (j = 0; j < NN_RVEC_GATHER_STATS; j++) 502 *data++ = gathered_stats[j]; 503 504 *data++ = atomic_read(&nn->ktls_no_space); 505 506 return data; 507 } 508 509 static unsigned int nfp_vnic_get_hw_stats_count(unsigned int num_vecs) 510 { 511 return NN_ET_GLOBAL_STATS_LEN + num_vecs * 4; 512 } 513 514 static u8 * 515 nfp_vnic_get_hw_stats_strings(u8 *data, unsigned int num_vecs, bool repr) 516 { 517 int swap_off, i; 518 519 BUILD_BUG_ON(NN_ET_GLOBAL_STATS_LEN < NN_ET_SWITCH_STATS_LEN * 2); 520 /* If repr is true first add SWITCH_STATS_LEN and then subtract it 521 * effectively swapping the RX and TX statistics (giving us the RX 522 * and TX from perspective of the switch). 523 */ 524 swap_off = repr * NN_ET_SWITCH_STATS_LEN; 525 526 for (i = 0; i < NN_ET_SWITCH_STATS_LEN; i++) 527 data = nfp_pr_et(data, nfp_net_et_stats[i + swap_off].name); 528 529 for (i = NN_ET_SWITCH_STATS_LEN; i < NN_ET_SWITCH_STATS_LEN * 2; i++) 530 data = nfp_pr_et(data, nfp_net_et_stats[i - swap_off].name); 531 532 for (i = NN_ET_SWITCH_STATS_LEN * 2; i < NN_ET_GLOBAL_STATS_LEN; i++) 533 data = nfp_pr_et(data, nfp_net_et_stats[i].name); 534 535 for (i = 0; i < num_vecs; i++) { 536 data = nfp_pr_et(data, "rxq_%u_pkts", i); 537 data = nfp_pr_et(data, "rxq_%u_bytes", i); 538 data = nfp_pr_et(data, "txq_%u_pkts", i); 539 data = nfp_pr_et(data, "txq_%u_bytes", i); 540 } 541 542 return data; 543 } 544 545 static u64 * 546 nfp_vnic_get_hw_stats(u64 *data, u8 __iomem *mem, unsigned int num_vecs) 547 { 548 unsigned int i; 549 550 for (i = 0; i < NN_ET_GLOBAL_STATS_LEN; i++) 551 *data++ = readq(mem + nfp_net_et_stats[i].off); 552 553 for (i = 0; i < num_vecs; i++) { 554 *data++ = readq(mem + NFP_NET_CFG_RXR_STATS(i)); 555 *data++ = readq(mem + NFP_NET_CFG_RXR_STATS(i) + 8); 556 *data++ = readq(mem + NFP_NET_CFG_TXR_STATS(i)); 557 *data++ = readq(mem + NFP_NET_CFG_TXR_STATS(i) + 8); 558 } 559 560 return data; 561 } 562 563 static unsigned int nfp_mac_get_stats_count(struct net_device *netdev) 564 { 565 struct nfp_port *port; 566 567 port = nfp_port_from_netdev(netdev); 568 if (!__nfp_port_get_eth_port(port) || !port->eth_stats) 569 return 0; 570 571 return ARRAY_SIZE(nfp_mac_et_stats); 572 } 573 574 static u8 *nfp_mac_get_stats_strings(struct net_device *netdev, u8 *data) 575 { 576 struct nfp_port *port; 577 unsigned int i; 578 579 port = nfp_port_from_netdev(netdev); 580 if (!__nfp_port_get_eth_port(port) || !port->eth_stats) 581 return data; 582 583 for (i = 0; i < ARRAY_SIZE(nfp_mac_et_stats); i++) 584 data = nfp_pr_et(data, "mac.%s", nfp_mac_et_stats[i].name); 585 586 return data; 587 } 588 589 static u64 *nfp_mac_get_stats(struct net_device *netdev, u64 *data) 590 { 591 struct nfp_port *port; 592 unsigned int i; 593 594 port = nfp_port_from_netdev(netdev); 595 if (!__nfp_port_get_eth_port(port) || !port->eth_stats) 596 return data; 597 598 for (i = 0; i < ARRAY_SIZE(nfp_mac_et_stats); i++) 599 *data++ = readq(port->eth_stats + nfp_mac_et_stats[i].off); 600 601 return data; 602 } 603 604 static void nfp_net_get_strings(struct net_device *netdev, 605 u32 stringset, u8 *data) 606 { 607 struct nfp_net *nn = netdev_priv(netdev); 608 609 switch (stringset) { 610 case ETH_SS_STATS: 611 data = nfp_vnic_get_sw_stats_strings(netdev, data); 612 data = nfp_vnic_get_hw_stats_strings(data, nn->max_r_vecs, 613 false); 614 data = nfp_mac_get_stats_strings(netdev, data); 615 data = nfp_app_port_get_stats_strings(nn->port, data); 616 break; 617 } 618 } 619 620 static void 621 nfp_net_get_stats(struct net_device *netdev, struct ethtool_stats *stats, 622 u64 *data) 623 { 624 struct nfp_net *nn = netdev_priv(netdev); 625 626 data = nfp_vnic_get_sw_stats(netdev, data); 627 data = nfp_vnic_get_hw_stats(data, nn->dp.ctrl_bar, nn->max_r_vecs); 628 data = nfp_mac_get_stats(netdev, data); 629 data = nfp_app_port_get_stats(nn->port, data); 630 } 631 632 static int nfp_net_get_sset_count(struct net_device *netdev, int sset) 633 { 634 struct nfp_net *nn = netdev_priv(netdev); 635 636 switch (sset) { 637 case ETH_SS_STATS: 638 return nfp_vnic_get_sw_stats_count(netdev) + 639 nfp_vnic_get_hw_stats_count(nn->max_r_vecs) + 640 nfp_mac_get_stats_count(netdev) + 641 nfp_app_port_get_stats_count(nn->port); 642 default: 643 return -EOPNOTSUPP; 644 } 645 } 646 647 static void nfp_port_get_strings(struct net_device *netdev, 648 u32 stringset, u8 *data) 649 { 650 struct nfp_port *port = nfp_port_from_netdev(netdev); 651 652 switch (stringset) { 653 case ETH_SS_STATS: 654 if (nfp_port_is_vnic(port)) 655 data = nfp_vnic_get_hw_stats_strings(data, 0, true); 656 else 657 data = nfp_mac_get_stats_strings(netdev, data); 658 data = nfp_app_port_get_stats_strings(port, data); 659 break; 660 } 661 } 662 663 static void 664 nfp_port_get_stats(struct net_device *netdev, struct ethtool_stats *stats, 665 u64 *data) 666 { 667 struct nfp_port *port = nfp_port_from_netdev(netdev); 668 669 if (nfp_port_is_vnic(port)) 670 data = nfp_vnic_get_hw_stats(data, port->vnic, 0); 671 else 672 data = nfp_mac_get_stats(netdev, data); 673 data = nfp_app_port_get_stats(port, data); 674 } 675 676 static int nfp_port_get_sset_count(struct net_device *netdev, int sset) 677 { 678 struct nfp_port *port = nfp_port_from_netdev(netdev); 679 unsigned int count; 680 681 switch (sset) { 682 case ETH_SS_STATS: 683 if (nfp_port_is_vnic(port)) 684 count = nfp_vnic_get_hw_stats_count(0); 685 else 686 count = nfp_mac_get_stats_count(netdev); 687 count += nfp_app_port_get_stats_count(port); 688 return count; 689 default: 690 return -EOPNOTSUPP; 691 } 692 } 693 694 static int nfp_port_fec_ethtool_to_nsp(u32 fec) 695 { 696 switch (fec) { 697 case ETHTOOL_FEC_AUTO: 698 return NFP_FEC_AUTO_BIT; 699 case ETHTOOL_FEC_OFF: 700 return NFP_FEC_DISABLED_BIT; 701 case ETHTOOL_FEC_RS: 702 return NFP_FEC_REED_SOLOMON_BIT; 703 case ETHTOOL_FEC_BASER: 704 return NFP_FEC_BASER_BIT; 705 default: 706 /* NSP only supports a single mode at a time */ 707 return -EOPNOTSUPP; 708 } 709 } 710 711 static u32 nfp_port_fec_nsp_to_ethtool(u32 fec) 712 { 713 u32 result = 0; 714 715 if (fec & NFP_FEC_AUTO) 716 result |= ETHTOOL_FEC_AUTO; 717 if (fec & NFP_FEC_BASER) 718 result |= ETHTOOL_FEC_BASER; 719 if (fec & NFP_FEC_REED_SOLOMON) 720 result |= ETHTOOL_FEC_RS; 721 if (fec & NFP_FEC_DISABLED) 722 result |= ETHTOOL_FEC_OFF; 723 724 return result ?: ETHTOOL_FEC_NONE; 725 } 726 727 static int 728 nfp_port_get_fecparam(struct net_device *netdev, 729 struct ethtool_fecparam *param) 730 { 731 struct nfp_eth_table_port *eth_port; 732 struct nfp_port *port; 733 734 param->active_fec = ETHTOOL_FEC_NONE_BIT; 735 param->fec = ETHTOOL_FEC_NONE_BIT; 736 737 port = nfp_port_from_netdev(netdev); 738 eth_port = nfp_port_get_eth_port(port); 739 if (!eth_port) 740 return -EOPNOTSUPP; 741 742 if (!nfp_eth_can_support_fec(eth_port)) 743 return 0; 744 745 param->fec = nfp_port_fec_nsp_to_ethtool(eth_port->fec_modes_supported); 746 param->active_fec = nfp_port_fec_nsp_to_ethtool(eth_port->fec); 747 748 return 0; 749 } 750 751 static int 752 nfp_port_set_fecparam(struct net_device *netdev, 753 struct ethtool_fecparam *param) 754 { 755 struct nfp_eth_table_port *eth_port; 756 struct nfp_port *port; 757 int err, fec; 758 759 port = nfp_port_from_netdev(netdev); 760 eth_port = nfp_port_get_eth_port(port); 761 if (!eth_port) 762 return -EOPNOTSUPP; 763 764 if (!nfp_eth_can_support_fec(eth_port)) 765 return -EOPNOTSUPP; 766 767 fec = nfp_port_fec_ethtool_to_nsp(param->fec); 768 if (fec < 0) 769 return fec; 770 771 err = nfp_eth_set_fec(port->app->cpp, eth_port->index, fec); 772 if (!err) 773 /* Only refresh if we did something */ 774 nfp_net_refresh_port_table(port); 775 776 return err < 0 ? err : 0; 777 } 778 779 /* RX network flow classification (RSS, filters, etc) 780 */ 781 static u32 ethtool_flow_to_nfp_flag(u32 flow_type) 782 { 783 static const u32 xlate_ethtool_to_nfp[IPV6_FLOW + 1] = { 784 [TCP_V4_FLOW] = NFP_NET_CFG_RSS_IPV4_TCP, 785 [TCP_V6_FLOW] = NFP_NET_CFG_RSS_IPV6_TCP, 786 [UDP_V4_FLOW] = NFP_NET_CFG_RSS_IPV4_UDP, 787 [UDP_V6_FLOW] = NFP_NET_CFG_RSS_IPV6_UDP, 788 [IPV4_FLOW] = NFP_NET_CFG_RSS_IPV4, 789 [IPV6_FLOW] = NFP_NET_CFG_RSS_IPV6, 790 }; 791 792 if (flow_type >= ARRAY_SIZE(xlate_ethtool_to_nfp)) 793 return 0; 794 795 return xlate_ethtool_to_nfp[flow_type]; 796 } 797 798 static int nfp_net_get_rss_hash_opts(struct nfp_net *nn, 799 struct ethtool_rxnfc *cmd) 800 { 801 u32 nfp_rss_flag; 802 803 cmd->data = 0; 804 805 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY)) 806 return -EOPNOTSUPP; 807 808 nfp_rss_flag = ethtool_flow_to_nfp_flag(cmd->flow_type); 809 if (!nfp_rss_flag) 810 return -EINVAL; 811 812 cmd->data |= RXH_IP_SRC | RXH_IP_DST; 813 if (nn->rss_cfg & nfp_rss_flag) 814 cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3; 815 816 return 0; 817 } 818 819 static int nfp_net_get_rxnfc(struct net_device *netdev, 820 struct ethtool_rxnfc *cmd, u32 *rule_locs) 821 { 822 struct nfp_net *nn = netdev_priv(netdev); 823 824 switch (cmd->cmd) { 825 case ETHTOOL_GRXRINGS: 826 cmd->data = nn->dp.num_rx_rings; 827 return 0; 828 case ETHTOOL_GRXFH: 829 return nfp_net_get_rss_hash_opts(nn, cmd); 830 default: 831 return -EOPNOTSUPP; 832 } 833 } 834 835 static int nfp_net_set_rss_hash_opt(struct nfp_net *nn, 836 struct ethtool_rxnfc *nfc) 837 { 838 u32 new_rss_cfg = nn->rss_cfg; 839 u32 nfp_rss_flag; 840 int err; 841 842 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY)) 843 return -EOPNOTSUPP; 844 845 /* RSS only supports IP SA/DA and L4 src/dst ports */ 846 if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST | 847 RXH_L4_B_0_1 | RXH_L4_B_2_3)) 848 return -EINVAL; 849 850 /* We need at least the IP SA/DA fields for hashing */ 851 if (!(nfc->data & RXH_IP_SRC) || 852 !(nfc->data & RXH_IP_DST)) 853 return -EINVAL; 854 855 nfp_rss_flag = ethtool_flow_to_nfp_flag(nfc->flow_type); 856 if (!nfp_rss_flag) 857 return -EINVAL; 858 859 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) { 860 case 0: 861 new_rss_cfg &= ~nfp_rss_flag; 862 break; 863 case (RXH_L4_B_0_1 | RXH_L4_B_2_3): 864 new_rss_cfg |= nfp_rss_flag; 865 break; 866 default: 867 return -EINVAL; 868 } 869 870 new_rss_cfg |= FIELD_PREP(NFP_NET_CFG_RSS_HFUNC, nn->rss_hfunc); 871 new_rss_cfg |= NFP_NET_CFG_RSS_MASK; 872 873 if (new_rss_cfg == nn->rss_cfg) 874 return 0; 875 876 writel(new_rss_cfg, nn->dp.ctrl_bar + NFP_NET_CFG_RSS_CTRL); 877 err = nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_RSS); 878 if (err) 879 return err; 880 881 nn->rss_cfg = new_rss_cfg; 882 883 nn_dbg(nn, "Changed RSS config to 0x%x\n", nn->rss_cfg); 884 return 0; 885 } 886 887 static int nfp_net_set_rxnfc(struct net_device *netdev, 888 struct ethtool_rxnfc *cmd) 889 { 890 struct nfp_net *nn = netdev_priv(netdev); 891 892 switch (cmd->cmd) { 893 case ETHTOOL_SRXFH: 894 return nfp_net_set_rss_hash_opt(nn, cmd); 895 default: 896 return -EOPNOTSUPP; 897 } 898 } 899 900 static u32 nfp_net_get_rxfh_indir_size(struct net_device *netdev) 901 { 902 struct nfp_net *nn = netdev_priv(netdev); 903 904 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY)) 905 return 0; 906 907 return ARRAY_SIZE(nn->rss_itbl); 908 } 909 910 static u32 nfp_net_get_rxfh_key_size(struct net_device *netdev) 911 { 912 struct nfp_net *nn = netdev_priv(netdev); 913 914 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY)) 915 return -EOPNOTSUPP; 916 917 return nfp_net_rss_key_sz(nn); 918 } 919 920 static int nfp_net_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key, 921 u8 *hfunc) 922 { 923 struct nfp_net *nn = netdev_priv(netdev); 924 int i; 925 926 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY)) 927 return -EOPNOTSUPP; 928 929 if (indir) 930 for (i = 0; i < ARRAY_SIZE(nn->rss_itbl); i++) 931 indir[i] = nn->rss_itbl[i]; 932 if (key) 933 memcpy(key, nn->rss_key, nfp_net_rss_key_sz(nn)); 934 if (hfunc) { 935 *hfunc = nn->rss_hfunc; 936 if (*hfunc >= 1 << ETH_RSS_HASH_FUNCS_COUNT) 937 *hfunc = ETH_RSS_HASH_UNKNOWN; 938 } 939 940 return 0; 941 } 942 943 static int nfp_net_set_rxfh(struct net_device *netdev, 944 const u32 *indir, const u8 *key, 945 const u8 hfunc) 946 { 947 struct nfp_net *nn = netdev_priv(netdev); 948 int i; 949 950 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY) || 951 !(hfunc == ETH_RSS_HASH_NO_CHANGE || hfunc == nn->rss_hfunc)) 952 return -EOPNOTSUPP; 953 954 if (!key && !indir) 955 return 0; 956 957 if (key) { 958 memcpy(nn->rss_key, key, nfp_net_rss_key_sz(nn)); 959 nfp_net_rss_write_key(nn); 960 } 961 if (indir) { 962 for (i = 0; i < ARRAY_SIZE(nn->rss_itbl); i++) 963 nn->rss_itbl[i] = indir[i]; 964 965 nfp_net_rss_write_itbl(nn); 966 } 967 968 return nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_RSS); 969 } 970 971 /* Dump BAR registers 972 */ 973 static int nfp_net_get_regs_len(struct net_device *netdev) 974 { 975 return NFP_NET_CFG_BAR_SZ; 976 } 977 978 static void nfp_net_get_regs(struct net_device *netdev, 979 struct ethtool_regs *regs, void *p) 980 { 981 struct nfp_net *nn = netdev_priv(netdev); 982 u32 *regs_buf = p; 983 int i; 984 985 regs->version = nn_readl(nn, NFP_NET_CFG_VERSION); 986 987 for (i = 0; i < NFP_NET_CFG_BAR_SZ / sizeof(u32); i++) 988 regs_buf[i] = readl(nn->dp.ctrl_bar + (i * sizeof(u32))); 989 } 990 991 static int nfp_net_get_coalesce(struct net_device *netdev, 992 struct ethtool_coalesce *ec) 993 { 994 struct nfp_net *nn = netdev_priv(netdev); 995 996 if (!(nn->cap & NFP_NET_CFG_CTRL_IRQMOD)) 997 return -EINVAL; 998 999 ec->rx_coalesce_usecs = nn->rx_coalesce_usecs; 1000 ec->rx_max_coalesced_frames = nn->rx_coalesce_max_frames; 1001 ec->tx_coalesce_usecs = nn->tx_coalesce_usecs; 1002 ec->tx_max_coalesced_frames = nn->tx_coalesce_max_frames; 1003 1004 return 0; 1005 } 1006 1007 /* Other debug dumps 1008 */ 1009 static int 1010 nfp_dump_nsp_diag(struct nfp_app *app, struct ethtool_dump *dump, void *buffer) 1011 { 1012 struct nfp_resource *res; 1013 int ret; 1014 1015 if (!app) 1016 return -EOPNOTSUPP; 1017 1018 dump->version = 1; 1019 dump->flag = NFP_DUMP_NSP_DIAG; 1020 1021 res = nfp_resource_acquire(app->cpp, NFP_RESOURCE_NSP_DIAG); 1022 if (IS_ERR(res)) 1023 return PTR_ERR(res); 1024 1025 if (buffer) { 1026 if (dump->len != nfp_resource_size(res)) { 1027 ret = -EINVAL; 1028 goto exit_release; 1029 } 1030 1031 ret = nfp_cpp_read(app->cpp, nfp_resource_cpp_id(res), 1032 nfp_resource_address(res), 1033 buffer, dump->len); 1034 if (ret != dump->len) 1035 ret = ret < 0 ? ret : -EIO; 1036 else 1037 ret = 0; 1038 } else { 1039 dump->len = nfp_resource_size(res); 1040 ret = 0; 1041 } 1042 exit_release: 1043 nfp_resource_release(res); 1044 1045 return ret; 1046 } 1047 1048 /* Set the dump flag/level. Calculate the dump length for flag > 0 only (new TLV 1049 * based dumps), since flag 0 (default) calculates the length in 1050 * nfp_app_get_dump_flag(), and we need to support triggering a level 0 dump 1051 * without setting the flag first, for backward compatibility. 1052 */ 1053 static int nfp_app_set_dump(struct net_device *netdev, struct ethtool_dump *val) 1054 { 1055 struct nfp_app *app = nfp_app_from_netdev(netdev); 1056 s64 len; 1057 1058 if (!app) 1059 return -EOPNOTSUPP; 1060 1061 if (val->flag == NFP_DUMP_NSP_DIAG) { 1062 app->pf->dump_flag = val->flag; 1063 return 0; 1064 } 1065 1066 if (!app->pf->dumpspec) 1067 return -EOPNOTSUPP; 1068 1069 len = nfp_net_dump_calculate_size(app->pf, app->pf->dumpspec, 1070 val->flag); 1071 if (len < 0) 1072 return len; 1073 1074 app->pf->dump_flag = val->flag; 1075 app->pf->dump_len = len; 1076 1077 return 0; 1078 } 1079 1080 static int 1081 nfp_app_get_dump_flag(struct net_device *netdev, struct ethtool_dump *dump) 1082 { 1083 struct nfp_app *app = nfp_app_from_netdev(netdev); 1084 1085 if (!app) 1086 return -EOPNOTSUPP; 1087 1088 if (app->pf->dump_flag == NFP_DUMP_NSP_DIAG) 1089 return nfp_dump_nsp_diag(app, dump, NULL); 1090 1091 dump->flag = app->pf->dump_flag; 1092 dump->len = app->pf->dump_len; 1093 1094 return 0; 1095 } 1096 1097 static int 1098 nfp_app_get_dump_data(struct net_device *netdev, struct ethtool_dump *dump, 1099 void *buffer) 1100 { 1101 struct nfp_app *app = nfp_app_from_netdev(netdev); 1102 1103 if (!app) 1104 return -EOPNOTSUPP; 1105 1106 if (app->pf->dump_flag == NFP_DUMP_NSP_DIAG) 1107 return nfp_dump_nsp_diag(app, dump, buffer); 1108 1109 dump->flag = app->pf->dump_flag; 1110 dump->len = app->pf->dump_len; 1111 1112 return nfp_net_dump_populate_buffer(app->pf, app->pf->dumpspec, dump, 1113 buffer); 1114 } 1115 1116 static int 1117 nfp_port_get_module_info(struct net_device *netdev, 1118 struct ethtool_modinfo *modinfo) 1119 { 1120 struct nfp_eth_table_port *eth_port; 1121 struct nfp_port *port; 1122 unsigned int read_len; 1123 struct nfp_nsp *nsp; 1124 int err = 0; 1125 u8 data; 1126 1127 port = nfp_port_from_netdev(netdev); 1128 eth_port = nfp_port_get_eth_port(port); 1129 if (!eth_port) 1130 return -EOPNOTSUPP; 1131 1132 nsp = nfp_nsp_open(port->app->cpp); 1133 if (IS_ERR(nsp)) { 1134 err = PTR_ERR(nsp); 1135 netdev_err(netdev, "Failed to access the NSP: %d\n", err); 1136 return err; 1137 } 1138 1139 if (!nfp_nsp_has_read_module_eeprom(nsp)) { 1140 netdev_info(netdev, "reading module EEPROM not supported. Please update flash\n"); 1141 err = -EOPNOTSUPP; 1142 goto exit_close_nsp; 1143 } 1144 1145 switch (eth_port->interface) { 1146 case NFP_INTERFACE_SFP: 1147 case NFP_INTERFACE_SFP28: 1148 err = nfp_nsp_read_module_eeprom(nsp, eth_port->eth_index, 1149 SFP_SFF8472_COMPLIANCE, &data, 1150 1, &read_len); 1151 if (err < 0) 1152 goto exit_close_nsp; 1153 1154 if (!data) { 1155 modinfo->type = ETH_MODULE_SFF_8079; 1156 modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN; 1157 } else { 1158 modinfo->type = ETH_MODULE_SFF_8472; 1159 modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN; 1160 } 1161 break; 1162 case NFP_INTERFACE_QSFP: 1163 err = nfp_nsp_read_module_eeprom(nsp, eth_port->eth_index, 1164 SFP_SFF_REV_COMPLIANCE, &data, 1165 1, &read_len); 1166 if (err < 0) 1167 goto exit_close_nsp; 1168 1169 if (data < 0x3) { 1170 modinfo->type = ETH_MODULE_SFF_8436; 1171 modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN; 1172 } else { 1173 modinfo->type = ETH_MODULE_SFF_8636; 1174 modinfo->eeprom_len = ETH_MODULE_SFF_8636_LEN; 1175 } 1176 break; 1177 case NFP_INTERFACE_QSFP28: 1178 modinfo->type = ETH_MODULE_SFF_8636; 1179 modinfo->eeprom_len = ETH_MODULE_SFF_8636_LEN; 1180 break; 1181 default: 1182 netdev_err(netdev, "Unsupported module 0x%x detected\n", 1183 eth_port->interface); 1184 err = -EINVAL; 1185 } 1186 1187 exit_close_nsp: 1188 nfp_nsp_close(nsp); 1189 return err; 1190 } 1191 1192 static int 1193 nfp_port_get_module_eeprom(struct net_device *netdev, 1194 struct ethtool_eeprom *eeprom, u8 *data) 1195 { 1196 struct nfp_eth_table_port *eth_port; 1197 struct nfp_port *port; 1198 struct nfp_nsp *nsp; 1199 int err; 1200 1201 port = nfp_port_from_netdev(netdev); 1202 eth_port = __nfp_port_get_eth_port(port); 1203 if (!eth_port) 1204 return -EOPNOTSUPP; 1205 1206 nsp = nfp_nsp_open(port->app->cpp); 1207 if (IS_ERR(nsp)) { 1208 err = PTR_ERR(nsp); 1209 netdev_err(netdev, "Failed to access the NSP: %d\n", err); 1210 return err; 1211 } 1212 1213 if (!nfp_nsp_has_read_module_eeprom(nsp)) { 1214 netdev_info(netdev, "reading module EEPROM not supported. Please update flash\n"); 1215 err = -EOPNOTSUPP; 1216 goto exit_close_nsp; 1217 } 1218 1219 err = nfp_nsp_read_module_eeprom(nsp, eth_port->eth_index, 1220 eeprom->offset, data, eeprom->len, 1221 &eeprom->len); 1222 if (err < 0) { 1223 if (eeprom->len) { 1224 netdev_warn(netdev, 1225 "Incomplete read from module EEPROM: %d\n", 1226 err); 1227 err = 0; 1228 } else { 1229 netdev_err(netdev, 1230 "Reading from module EEPROM failed: %d\n", 1231 err); 1232 } 1233 } 1234 1235 exit_close_nsp: 1236 nfp_nsp_close(nsp); 1237 return err; 1238 } 1239 1240 static int nfp_net_set_coalesce(struct net_device *netdev, 1241 struct ethtool_coalesce *ec) 1242 { 1243 struct nfp_net *nn = netdev_priv(netdev); 1244 unsigned int factor; 1245 1246 if (ec->rx_coalesce_usecs_irq || 1247 ec->rx_max_coalesced_frames_irq || 1248 ec->tx_coalesce_usecs_irq || 1249 ec->tx_max_coalesced_frames_irq || 1250 ec->stats_block_coalesce_usecs || 1251 ec->use_adaptive_rx_coalesce || 1252 ec->use_adaptive_tx_coalesce || 1253 ec->pkt_rate_low || 1254 ec->rx_coalesce_usecs_low || 1255 ec->rx_max_coalesced_frames_low || 1256 ec->tx_coalesce_usecs_low || 1257 ec->tx_max_coalesced_frames_low || 1258 ec->pkt_rate_high || 1259 ec->rx_coalesce_usecs_high || 1260 ec->rx_max_coalesced_frames_high || 1261 ec->tx_coalesce_usecs_high || 1262 ec->tx_max_coalesced_frames_high || 1263 ec->rate_sample_interval) 1264 return -EOPNOTSUPP; 1265 1266 /* Compute factor used to convert coalesce '_usecs' parameters to 1267 * ME timestamp ticks. There are 16 ME clock cycles for each timestamp 1268 * count. 1269 */ 1270 factor = nn->me_freq_mhz / 16; 1271 1272 /* Each pair of (usecs, max_frames) fields specifies that interrupts 1273 * should be coalesced until 1274 * (usecs > 0 && time_since_first_completion >= usecs) || 1275 * (max_frames > 0 && completed_frames >= max_frames) 1276 * 1277 * It is illegal to set both usecs and max_frames to zero as this would 1278 * cause interrupts to never be generated. To disable coalescing, set 1279 * usecs = 0 and max_frames = 1. 1280 * 1281 * Some implementations ignore the value of max_frames and use the 1282 * condition time_since_first_completion >= usecs 1283 */ 1284 1285 if (!(nn->cap & NFP_NET_CFG_CTRL_IRQMOD)) 1286 return -EINVAL; 1287 1288 /* ensure valid configuration */ 1289 if (!ec->rx_coalesce_usecs && !ec->rx_max_coalesced_frames) 1290 return -EINVAL; 1291 1292 if (!ec->tx_coalesce_usecs && !ec->tx_max_coalesced_frames) 1293 return -EINVAL; 1294 1295 if (ec->rx_coalesce_usecs * factor >= ((1 << 16) - 1)) 1296 return -EINVAL; 1297 1298 if (ec->tx_coalesce_usecs * factor >= ((1 << 16) - 1)) 1299 return -EINVAL; 1300 1301 if (ec->rx_max_coalesced_frames >= ((1 << 16) - 1)) 1302 return -EINVAL; 1303 1304 if (ec->tx_max_coalesced_frames >= ((1 << 16) - 1)) 1305 return -EINVAL; 1306 1307 /* configuration is valid */ 1308 nn->rx_coalesce_usecs = ec->rx_coalesce_usecs; 1309 nn->rx_coalesce_max_frames = ec->rx_max_coalesced_frames; 1310 nn->tx_coalesce_usecs = ec->tx_coalesce_usecs; 1311 nn->tx_coalesce_max_frames = ec->tx_max_coalesced_frames; 1312 1313 /* write configuration to device */ 1314 nfp_net_coalesce_write_cfg(nn); 1315 return nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_IRQMOD); 1316 } 1317 1318 static void nfp_net_get_channels(struct net_device *netdev, 1319 struct ethtool_channels *channel) 1320 { 1321 struct nfp_net *nn = netdev_priv(netdev); 1322 unsigned int num_tx_rings; 1323 1324 num_tx_rings = nn->dp.num_tx_rings; 1325 if (nn->dp.xdp_prog) 1326 num_tx_rings -= nn->dp.num_rx_rings; 1327 1328 channel->max_rx = min(nn->max_rx_rings, nn->max_r_vecs); 1329 channel->max_tx = min(nn->max_tx_rings, nn->max_r_vecs); 1330 channel->max_combined = min(channel->max_rx, channel->max_tx); 1331 channel->max_other = NFP_NET_NON_Q_VECTORS; 1332 channel->combined_count = min(nn->dp.num_rx_rings, num_tx_rings); 1333 channel->rx_count = nn->dp.num_rx_rings - channel->combined_count; 1334 channel->tx_count = num_tx_rings - channel->combined_count; 1335 channel->other_count = NFP_NET_NON_Q_VECTORS; 1336 } 1337 1338 static int nfp_net_set_num_rings(struct nfp_net *nn, unsigned int total_rx, 1339 unsigned int total_tx) 1340 { 1341 struct nfp_net_dp *dp; 1342 1343 dp = nfp_net_clone_dp(nn); 1344 if (!dp) 1345 return -ENOMEM; 1346 1347 dp->num_rx_rings = total_rx; 1348 dp->num_tx_rings = total_tx; 1349 /* nfp_net_check_config() will catch num_tx_rings > nn->max_tx_rings */ 1350 if (dp->xdp_prog) 1351 dp->num_tx_rings += total_rx; 1352 1353 return nfp_net_ring_reconfig(nn, dp, NULL); 1354 } 1355 1356 static int nfp_net_set_channels(struct net_device *netdev, 1357 struct ethtool_channels *channel) 1358 { 1359 struct nfp_net *nn = netdev_priv(netdev); 1360 unsigned int total_rx, total_tx; 1361 1362 /* Reject unsupported */ 1363 if (!channel->combined_count || 1364 channel->other_count != NFP_NET_NON_Q_VECTORS || 1365 (channel->rx_count && channel->tx_count)) 1366 return -EINVAL; 1367 1368 total_rx = channel->combined_count + channel->rx_count; 1369 total_tx = channel->combined_count + channel->tx_count; 1370 1371 if (total_rx > min(nn->max_rx_rings, nn->max_r_vecs) || 1372 total_tx > min(nn->max_tx_rings, nn->max_r_vecs)) 1373 return -EINVAL; 1374 1375 return nfp_net_set_num_rings(nn, total_rx, total_tx); 1376 } 1377 1378 static const struct ethtool_ops nfp_net_ethtool_ops = { 1379 .get_drvinfo = nfp_net_get_drvinfo, 1380 .get_link = ethtool_op_get_link, 1381 .get_ringparam = nfp_net_get_ringparam, 1382 .set_ringparam = nfp_net_set_ringparam, 1383 .get_strings = nfp_net_get_strings, 1384 .get_ethtool_stats = nfp_net_get_stats, 1385 .get_sset_count = nfp_net_get_sset_count, 1386 .get_rxnfc = nfp_net_get_rxnfc, 1387 .set_rxnfc = nfp_net_set_rxnfc, 1388 .get_rxfh_indir_size = nfp_net_get_rxfh_indir_size, 1389 .get_rxfh_key_size = nfp_net_get_rxfh_key_size, 1390 .get_rxfh = nfp_net_get_rxfh, 1391 .set_rxfh = nfp_net_set_rxfh, 1392 .get_regs_len = nfp_net_get_regs_len, 1393 .get_regs = nfp_net_get_regs, 1394 .set_dump = nfp_app_set_dump, 1395 .get_dump_flag = nfp_app_get_dump_flag, 1396 .get_dump_data = nfp_app_get_dump_data, 1397 .get_module_info = nfp_port_get_module_info, 1398 .get_module_eeprom = nfp_port_get_module_eeprom, 1399 .get_coalesce = nfp_net_get_coalesce, 1400 .set_coalesce = nfp_net_set_coalesce, 1401 .get_channels = nfp_net_get_channels, 1402 .set_channels = nfp_net_set_channels, 1403 .get_link_ksettings = nfp_net_get_link_ksettings, 1404 .set_link_ksettings = nfp_net_set_link_ksettings, 1405 .get_fecparam = nfp_port_get_fecparam, 1406 .set_fecparam = nfp_port_set_fecparam, 1407 }; 1408 1409 const struct ethtool_ops nfp_port_ethtool_ops = { 1410 .get_drvinfo = nfp_app_get_drvinfo, 1411 .get_link = ethtool_op_get_link, 1412 .get_strings = nfp_port_get_strings, 1413 .get_ethtool_stats = nfp_port_get_stats, 1414 .get_sset_count = nfp_port_get_sset_count, 1415 .set_dump = nfp_app_set_dump, 1416 .get_dump_flag = nfp_app_get_dump_flag, 1417 .get_dump_data = nfp_app_get_dump_data, 1418 .get_module_info = nfp_port_get_module_info, 1419 .get_module_eeprom = nfp_port_get_module_eeprom, 1420 .get_link_ksettings = nfp_net_get_link_ksettings, 1421 .set_link_ksettings = nfp_net_set_link_ksettings, 1422 .get_fecparam = nfp_port_get_fecparam, 1423 .set_fecparam = nfp_port_set_fecparam, 1424 }; 1425 1426 void nfp_net_set_ethtool_ops(struct net_device *netdev) 1427 { 1428 netdev->ethtool_ops = &nfp_net_ethtool_ops; 1429 } 1430