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 static const char nfp_tlv_stat_names[][ETH_GSTRING_LEN] = { 152 [1] = "dev_rx_discards", 153 [2] = "dev_rx_errors", 154 [3] = "dev_rx_bytes", 155 [4] = "dev_rx_uc_bytes", 156 [5] = "dev_rx_mc_bytes", 157 [6] = "dev_rx_bc_bytes", 158 [7] = "dev_rx_pkts", 159 [8] = "dev_rx_mc_pkts", 160 [9] = "dev_rx_bc_pkts", 161 162 [10] = "dev_tx_discards", 163 [11] = "dev_tx_errors", 164 [12] = "dev_tx_bytes", 165 [13] = "dev_tx_uc_bytes", 166 [14] = "dev_tx_mc_bytes", 167 [15] = "dev_tx_bc_bytes", 168 [16] = "dev_tx_pkts", 169 [17] = "dev_tx_mc_pkts", 170 [18] = "dev_tx_bc_pkts", 171 }; 172 173 #define NN_ET_GLOBAL_STATS_LEN ARRAY_SIZE(nfp_net_et_stats) 174 #define NN_ET_SWITCH_STATS_LEN 9 175 #define NN_RVEC_GATHER_STATS 13 176 #define NN_RVEC_PER_Q_STATS 3 177 #define NN_CTRL_PATH_STATS 4 178 179 #define SFP_SFF_REV_COMPLIANCE 1 180 181 static void nfp_net_get_nspinfo(struct nfp_app *app, char *version) 182 { 183 struct nfp_nsp *nsp; 184 185 if (!app) 186 return; 187 188 nsp = nfp_nsp_open(app->cpp); 189 if (IS_ERR(nsp)) 190 return; 191 192 snprintf(version, ETHTOOL_FWVERS_LEN, "%hu.%hu", 193 nfp_nsp_get_abi_ver_major(nsp), 194 nfp_nsp_get_abi_ver_minor(nsp)); 195 196 nfp_nsp_close(nsp); 197 } 198 199 static void 200 nfp_get_drvinfo(struct nfp_app *app, struct pci_dev *pdev, 201 const char *vnic_version, struct ethtool_drvinfo *drvinfo) 202 { 203 char nsp_version[ETHTOOL_FWVERS_LEN] = {}; 204 205 strlcpy(drvinfo->driver, pdev->driver->name, sizeof(drvinfo->driver)); 206 strlcpy(drvinfo->version, nfp_driver_version, sizeof(drvinfo->version)); 207 208 nfp_net_get_nspinfo(app, nsp_version); 209 snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version), 210 "%s %s %s %s", vnic_version, nsp_version, 211 nfp_app_mip_name(app), nfp_app_name(app)); 212 } 213 214 static void 215 nfp_net_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo) 216 { 217 char vnic_version[ETHTOOL_FWVERS_LEN] = {}; 218 struct nfp_net *nn = netdev_priv(netdev); 219 220 snprintf(vnic_version, sizeof(vnic_version), "%d.%d.%d.%d", 221 nn->fw_ver.resv, nn->fw_ver.class, 222 nn->fw_ver.major, nn->fw_ver.minor); 223 strlcpy(drvinfo->bus_info, pci_name(nn->pdev), 224 sizeof(drvinfo->bus_info)); 225 226 nfp_get_drvinfo(nn->app, nn->pdev, vnic_version, drvinfo); 227 } 228 229 static void 230 nfp_app_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo) 231 { 232 struct nfp_app *app = nfp_app_from_netdev(netdev); 233 234 strlcpy(drvinfo->bus_info, pci_name(app->pdev), 235 sizeof(drvinfo->bus_info)); 236 nfp_get_drvinfo(app, app->pdev, "*", drvinfo); 237 } 238 239 static void 240 nfp_net_set_fec_link_mode(struct nfp_eth_table_port *eth_port, 241 struct ethtool_link_ksettings *c) 242 { 243 unsigned int modes; 244 245 ethtool_link_ksettings_add_link_mode(c, supported, FEC_NONE); 246 if (!nfp_eth_can_support_fec(eth_port)) { 247 ethtool_link_ksettings_add_link_mode(c, advertising, FEC_NONE); 248 return; 249 } 250 251 modes = nfp_eth_supported_fec_modes(eth_port); 252 if (modes & NFP_FEC_BASER) { 253 ethtool_link_ksettings_add_link_mode(c, supported, FEC_BASER); 254 ethtool_link_ksettings_add_link_mode(c, advertising, FEC_BASER); 255 } 256 257 if (modes & NFP_FEC_REED_SOLOMON) { 258 ethtool_link_ksettings_add_link_mode(c, supported, FEC_RS); 259 ethtool_link_ksettings_add_link_mode(c, advertising, FEC_RS); 260 } 261 } 262 263 /** 264 * nfp_net_get_link_ksettings - Get Link Speed settings 265 * @netdev: network interface device structure 266 * @cmd: ethtool command 267 * 268 * Reports speed settings based on info in the BAR provided by the fw. 269 */ 270 static int 271 nfp_net_get_link_ksettings(struct net_device *netdev, 272 struct ethtool_link_ksettings *cmd) 273 { 274 static const u32 ls_to_ethtool[] = { 275 [NFP_NET_CFG_STS_LINK_RATE_UNSUPPORTED] = 0, 276 [NFP_NET_CFG_STS_LINK_RATE_UNKNOWN] = SPEED_UNKNOWN, 277 [NFP_NET_CFG_STS_LINK_RATE_1G] = SPEED_1000, 278 [NFP_NET_CFG_STS_LINK_RATE_10G] = SPEED_10000, 279 [NFP_NET_CFG_STS_LINK_RATE_25G] = SPEED_25000, 280 [NFP_NET_CFG_STS_LINK_RATE_40G] = SPEED_40000, 281 [NFP_NET_CFG_STS_LINK_RATE_50G] = SPEED_50000, 282 [NFP_NET_CFG_STS_LINK_RATE_100G] = SPEED_100000, 283 }; 284 struct nfp_eth_table_port *eth_port; 285 struct nfp_port *port; 286 struct nfp_net *nn; 287 u32 sts, ls; 288 289 /* Init to unknowns */ 290 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE); 291 cmd->base.port = PORT_OTHER; 292 cmd->base.speed = SPEED_UNKNOWN; 293 cmd->base.duplex = DUPLEX_UNKNOWN; 294 295 port = nfp_port_from_netdev(netdev); 296 eth_port = nfp_port_get_eth_port(port); 297 if (eth_port) { 298 cmd->base.autoneg = eth_port->aneg != NFP_ANEG_DISABLED ? 299 AUTONEG_ENABLE : AUTONEG_DISABLE; 300 nfp_net_set_fec_link_mode(eth_port, cmd); 301 } 302 303 if (!netif_carrier_ok(netdev)) 304 return 0; 305 306 /* Use link speed from ETH table if available, otherwise try the BAR */ 307 if (eth_port) { 308 cmd->base.port = eth_port->port_type; 309 cmd->base.speed = eth_port->speed; 310 cmd->base.duplex = DUPLEX_FULL; 311 return 0; 312 } 313 314 if (!nfp_netdev_is_nfp_net(netdev)) 315 return -EOPNOTSUPP; 316 nn = netdev_priv(netdev); 317 318 sts = nn_readl(nn, NFP_NET_CFG_STS); 319 320 ls = FIELD_GET(NFP_NET_CFG_STS_LINK_RATE, sts); 321 if (ls == NFP_NET_CFG_STS_LINK_RATE_UNSUPPORTED) 322 return -EOPNOTSUPP; 323 324 if (ls == NFP_NET_CFG_STS_LINK_RATE_UNKNOWN || 325 ls >= ARRAY_SIZE(ls_to_ethtool)) 326 return 0; 327 328 cmd->base.speed = ls_to_ethtool[ls]; 329 cmd->base.duplex = DUPLEX_FULL; 330 331 return 0; 332 } 333 334 static int 335 nfp_net_set_link_ksettings(struct net_device *netdev, 336 const struct ethtool_link_ksettings *cmd) 337 { 338 struct nfp_eth_table_port *eth_port; 339 struct nfp_port *port; 340 struct nfp_nsp *nsp; 341 int err; 342 343 port = nfp_port_from_netdev(netdev); 344 eth_port = __nfp_port_get_eth_port(port); 345 if (!eth_port) 346 return -EOPNOTSUPP; 347 348 if (netif_running(netdev)) { 349 netdev_warn(netdev, "Changing settings not allowed on an active interface. It may cause the port to be disabled until driver reload.\n"); 350 return -EBUSY; 351 } 352 353 nsp = nfp_eth_config_start(port->app->cpp, eth_port->index); 354 if (IS_ERR(nsp)) 355 return PTR_ERR(nsp); 356 357 err = __nfp_eth_set_aneg(nsp, cmd->base.autoneg == AUTONEG_ENABLE ? 358 NFP_ANEG_AUTO : NFP_ANEG_DISABLED); 359 if (err) 360 goto err_bad_set; 361 if (cmd->base.speed != SPEED_UNKNOWN) { 362 u32 speed = cmd->base.speed / eth_port->lanes; 363 364 err = __nfp_eth_set_speed(nsp, speed); 365 if (err) 366 goto err_bad_set; 367 } 368 369 err = nfp_eth_config_commit_end(nsp); 370 if (err > 0) 371 return 0; /* no change */ 372 373 nfp_net_refresh_port_table(port); 374 375 return err; 376 377 err_bad_set: 378 nfp_eth_config_cleanup_end(nsp); 379 return err; 380 } 381 382 static void nfp_net_get_ringparam(struct net_device *netdev, 383 struct ethtool_ringparam *ring) 384 { 385 struct nfp_net *nn = netdev_priv(netdev); 386 387 ring->rx_max_pending = NFP_NET_MAX_RX_DESCS; 388 ring->tx_max_pending = NFP_NET_MAX_TX_DESCS; 389 ring->rx_pending = nn->dp.rxd_cnt; 390 ring->tx_pending = nn->dp.txd_cnt; 391 } 392 393 static int nfp_net_set_ring_size(struct nfp_net *nn, u32 rxd_cnt, u32 txd_cnt) 394 { 395 struct nfp_net_dp *dp; 396 397 dp = nfp_net_clone_dp(nn); 398 if (!dp) 399 return -ENOMEM; 400 401 dp->rxd_cnt = rxd_cnt; 402 dp->txd_cnt = txd_cnt; 403 404 return nfp_net_ring_reconfig(nn, dp, NULL); 405 } 406 407 static int nfp_net_set_ringparam(struct net_device *netdev, 408 struct ethtool_ringparam *ring) 409 { 410 struct nfp_net *nn = netdev_priv(netdev); 411 u32 rxd_cnt, txd_cnt; 412 413 /* We don't have separate queues/rings for small/large frames. */ 414 if (ring->rx_mini_pending || ring->rx_jumbo_pending) 415 return -EINVAL; 416 417 /* Round up to supported values */ 418 rxd_cnt = roundup_pow_of_two(ring->rx_pending); 419 txd_cnt = roundup_pow_of_two(ring->tx_pending); 420 421 if (rxd_cnt < NFP_NET_MIN_RX_DESCS || rxd_cnt > NFP_NET_MAX_RX_DESCS || 422 txd_cnt < NFP_NET_MIN_TX_DESCS || txd_cnt > NFP_NET_MAX_TX_DESCS) 423 return -EINVAL; 424 425 if (nn->dp.rxd_cnt == rxd_cnt && nn->dp.txd_cnt == txd_cnt) 426 return 0; 427 428 nn_dbg(nn, "Change ring size: RxQ %u->%u, TxQ %u->%u\n", 429 nn->dp.rxd_cnt, rxd_cnt, nn->dp.txd_cnt, txd_cnt); 430 431 return nfp_net_set_ring_size(nn, rxd_cnt, txd_cnt); 432 } 433 434 __printf(2, 3) u8 *nfp_pr_et(u8 *data, const char *fmt, ...) 435 { 436 va_list args; 437 438 va_start(args, fmt); 439 vsnprintf(data, ETH_GSTRING_LEN, fmt, args); 440 va_end(args); 441 442 return data + ETH_GSTRING_LEN; 443 } 444 445 static unsigned int nfp_vnic_get_sw_stats_count(struct net_device *netdev) 446 { 447 struct nfp_net *nn = netdev_priv(netdev); 448 449 return NN_RVEC_GATHER_STATS + nn->max_r_vecs * NN_RVEC_PER_Q_STATS + 450 NN_CTRL_PATH_STATS; 451 } 452 453 static u8 *nfp_vnic_get_sw_stats_strings(struct net_device *netdev, u8 *data) 454 { 455 struct nfp_net *nn = netdev_priv(netdev); 456 int i; 457 458 for (i = 0; i < nn->max_r_vecs; i++) { 459 data = nfp_pr_et(data, "rvec_%u_rx_pkts", i); 460 data = nfp_pr_et(data, "rvec_%u_tx_pkts", i); 461 data = nfp_pr_et(data, "rvec_%u_tx_busy", i); 462 } 463 464 data = nfp_pr_et(data, "hw_rx_csum_ok"); 465 data = nfp_pr_et(data, "hw_rx_csum_inner_ok"); 466 data = nfp_pr_et(data, "hw_rx_csum_complete"); 467 data = nfp_pr_et(data, "hw_rx_csum_err"); 468 data = nfp_pr_et(data, "rx_replace_buf_alloc_fail"); 469 data = nfp_pr_et(data, "rx_tls_decrypted_packets"); 470 data = nfp_pr_et(data, "hw_tx_csum"); 471 data = nfp_pr_et(data, "hw_tx_inner_csum"); 472 data = nfp_pr_et(data, "tx_gather"); 473 data = nfp_pr_et(data, "tx_lso"); 474 data = nfp_pr_et(data, "tx_tls_encrypted_packets"); 475 data = nfp_pr_et(data, "tx_tls_ooo"); 476 data = nfp_pr_et(data, "tx_tls_drop_no_sync_data"); 477 478 data = nfp_pr_et(data, "hw_tls_no_space"); 479 data = nfp_pr_et(data, "rx_tls_resync_req_ok"); 480 data = nfp_pr_et(data, "rx_tls_resync_req_ign"); 481 data = nfp_pr_et(data, "rx_tls_resync_sent"); 482 483 return data; 484 } 485 486 static u64 *nfp_vnic_get_sw_stats(struct net_device *netdev, u64 *data) 487 { 488 u64 gathered_stats[NN_RVEC_GATHER_STATS] = {}; 489 struct nfp_net *nn = netdev_priv(netdev); 490 u64 tmp[NN_RVEC_GATHER_STATS]; 491 unsigned int i, j; 492 493 for (i = 0; i < nn->max_r_vecs; i++) { 494 unsigned int start; 495 496 do { 497 start = u64_stats_fetch_begin(&nn->r_vecs[i].rx_sync); 498 data[0] = nn->r_vecs[i].rx_pkts; 499 tmp[0] = nn->r_vecs[i].hw_csum_rx_ok; 500 tmp[1] = nn->r_vecs[i].hw_csum_rx_inner_ok; 501 tmp[2] = nn->r_vecs[i].hw_csum_rx_complete; 502 tmp[3] = nn->r_vecs[i].hw_csum_rx_error; 503 tmp[4] = nn->r_vecs[i].rx_replace_buf_alloc_fail; 504 tmp[5] = nn->r_vecs[i].hw_tls_rx; 505 } while (u64_stats_fetch_retry(&nn->r_vecs[i].rx_sync, start)); 506 507 do { 508 start = u64_stats_fetch_begin(&nn->r_vecs[i].tx_sync); 509 data[1] = nn->r_vecs[i].tx_pkts; 510 data[2] = nn->r_vecs[i].tx_busy; 511 tmp[6] = nn->r_vecs[i].hw_csum_tx; 512 tmp[7] = nn->r_vecs[i].hw_csum_tx_inner; 513 tmp[8] = nn->r_vecs[i].tx_gather; 514 tmp[9] = nn->r_vecs[i].tx_lso; 515 tmp[10] = nn->r_vecs[i].hw_tls_tx; 516 tmp[11] = nn->r_vecs[i].tls_tx_fallback; 517 tmp[12] = nn->r_vecs[i].tls_tx_no_fallback; 518 } while (u64_stats_fetch_retry(&nn->r_vecs[i].tx_sync, start)); 519 520 data += NN_RVEC_PER_Q_STATS; 521 522 for (j = 0; j < NN_RVEC_GATHER_STATS; j++) 523 gathered_stats[j] += tmp[j]; 524 } 525 526 for (j = 0; j < NN_RVEC_GATHER_STATS; j++) 527 *data++ = gathered_stats[j]; 528 529 *data++ = atomic_read(&nn->ktls_no_space); 530 *data++ = atomic_read(&nn->ktls_rx_resync_req); 531 *data++ = atomic_read(&nn->ktls_rx_resync_ign); 532 *data++ = atomic_read(&nn->ktls_rx_resync_sent); 533 534 return data; 535 } 536 537 static unsigned int nfp_vnic_get_hw_stats_count(unsigned int num_vecs) 538 { 539 return NN_ET_GLOBAL_STATS_LEN + num_vecs * 4; 540 } 541 542 static u8 * 543 nfp_vnic_get_hw_stats_strings(u8 *data, unsigned int num_vecs, bool repr) 544 { 545 int swap_off, i; 546 547 BUILD_BUG_ON(NN_ET_GLOBAL_STATS_LEN < NN_ET_SWITCH_STATS_LEN * 2); 548 /* If repr is true first add SWITCH_STATS_LEN and then subtract it 549 * effectively swapping the RX and TX statistics (giving us the RX 550 * and TX from perspective of the switch). 551 */ 552 swap_off = repr * NN_ET_SWITCH_STATS_LEN; 553 554 for (i = 0; i < NN_ET_SWITCH_STATS_LEN; i++) 555 data = nfp_pr_et(data, nfp_net_et_stats[i + swap_off].name); 556 557 for (i = NN_ET_SWITCH_STATS_LEN; i < NN_ET_SWITCH_STATS_LEN * 2; i++) 558 data = nfp_pr_et(data, nfp_net_et_stats[i - swap_off].name); 559 560 for (i = NN_ET_SWITCH_STATS_LEN * 2; i < NN_ET_GLOBAL_STATS_LEN; i++) 561 data = nfp_pr_et(data, nfp_net_et_stats[i].name); 562 563 for (i = 0; i < num_vecs; i++) { 564 data = nfp_pr_et(data, "rxq_%u_pkts", i); 565 data = nfp_pr_et(data, "rxq_%u_bytes", i); 566 data = nfp_pr_et(data, "txq_%u_pkts", i); 567 data = nfp_pr_et(data, "txq_%u_bytes", i); 568 } 569 570 return data; 571 } 572 573 static u64 * 574 nfp_vnic_get_hw_stats(u64 *data, u8 __iomem *mem, unsigned int num_vecs) 575 { 576 unsigned int i; 577 578 for (i = 0; i < NN_ET_GLOBAL_STATS_LEN; i++) 579 *data++ = readq(mem + nfp_net_et_stats[i].off); 580 581 for (i = 0; i < num_vecs; i++) { 582 *data++ = readq(mem + NFP_NET_CFG_RXR_STATS(i)); 583 *data++ = readq(mem + NFP_NET_CFG_RXR_STATS(i) + 8); 584 *data++ = readq(mem + NFP_NET_CFG_TXR_STATS(i)); 585 *data++ = readq(mem + NFP_NET_CFG_TXR_STATS(i) + 8); 586 } 587 588 return data; 589 } 590 591 static unsigned int nfp_vnic_get_tlv_stats_count(struct nfp_net *nn) 592 { 593 return nn->tlv_caps.vnic_stats_cnt + nn->max_r_vecs * 4; 594 } 595 596 static u8 *nfp_vnic_get_tlv_stats_strings(struct nfp_net *nn, u8 *data) 597 { 598 unsigned int i, id; 599 u8 __iomem *mem; 600 u64 id_word = 0; 601 602 mem = nn->dp.ctrl_bar + nn->tlv_caps.vnic_stats_off; 603 for (i = 0; i < nn->tlv_caps.vnic_stats_cnt; i++) { 604 if (!(i % 4)) 605 id_word = readq(mem + i * 2); 606 607 id = (u16)id_word; 608 id_word >>= 16; 609 610 if (id < ARRAY_SIZE(nfp_tlv_stat_names) && 611 nfp_tlv_stat_names[id][0]) { 612 memcpy(data, nfp_tlv_stat_names[id], ETH_GSTRING_LEN); 613 data += ETH_GSTRING_LEN; 614 } else { 615 data = nfp_pr_et(data, "dev_unknown_stat%u", id); 616 } 617 } 618 619 for (i = 0; i < nn->max_r_vecs; i++) { 620 data = nfp_pr_et(data, "rxq_%u_pkts", i); 621 data = nfp_pr_et(data, "rxq_%u_bytes", i); 622 data = nfp_pr_et(data, "txq_%u_pkts", i); 623 data = nfp_pr_et(data, "txq_%u_bytes", i); 624 } 625 626 return data; 627 } 628 629 static u64 *nfp_vnic_get_tlv_stats(struct nfp_net *nn, u64 *data) 630 { 631 u8 __iomem *mem; 632 unsigned int i; 633 634 mem = nn->dp.ctrl_bar + nn->tlv_caps.vnic_stats_off; 635 mem += roundup(2 * nn->tlv_caps.vnic_stats_cnt, 8); 636 for (i = 0; i < nn->tlv_caps.vnic_stats_cnt; i++) 637 *data++ = readq(mem + i * 8); 638 639 mem = nn->dp.ctrl_bar; 640 for (i = 0; i < nn->max_r_vecs; i++) { 641 *data++ = readq(mem + NFP_NET_CFG_RXR_STATS(i)); 642 *data++ = readq(mem + NFP_NET_CFG_RXR_STATS(i) + 8); 643 *data++ = readq(mem + NFP_NET_CFG_TXR_STATS(i)); 644 *data++ = readq(mem + NFP_NET_CFG_TXR_STATS(i) + 8); 645 } 646 647 return data; 648 } 649 650 static unsigned int nfp_mac_get_stats_count(struct net_device *netdev) 651 { 652 struct nfp_port *port; 653 654 port = nfp_port_from_netdev(netdev); 655 if (!__nfp_port_get_eth_port(port) || !port->eth_stats) 656 return 0; 657 658 return ARRAY_SIZE(nfp_mac_et_stats); 659 } 660 661 static u8 *nfp_mac_get_stats_strings(struct net_device *netdev, u8 *data) 662 { 663 struct nfp_port *port; 664 unsigned int i; 665 666 port = nfp_port_from_netdev(netdev); 667 if (!__nfp_port_get_eth_port(port) || !port->eth_stats) 668 return data; 669 670 for (i = 0; i < ARRAY_SIZE(nfp_mac_et_stats); i++) 671 data = nfp_pr_et(data, "mac.%s", nfp_mac_et_stats[i].name); 672 673 return data; 674 } 675 676 static u64 *nfp_mac_get_stats(struct net_device *netdev, u64 *data) 677 { 678 struct nfp_port *port; 679 unsigned int i; 680 681 port = nfp_port_from_netdev(netdev); 682 if (!__nfp_port_get_eth_port(port) || !port->eth_stats) 683 return data; 684 685 for (i = 0; i < ARRAY_SIZE(nfp_mac_et_stats); i++) 686 *data++ = readq(port->eth_stats + nfp_mac_et_stats[i].off); 687 688 return data; 689 } 690 691 static void nfp_net_get_strings(struct net_device *netdev, 692 u32 stringset, u8 *data) 693 { 694 struct nfp_net *nn = netdev_priv(netdev); 695 696 switch (stringset) { 697 case ETH_SS_STATS: 698 data = nfp_vnic_get_sw_stats_strings(netdev, data); 699 if (!nn->tlv_caps.vnic_stats_off) 700 data = nfp_vnic_get_hw_stats_strings(data, 701 nn->max_r_vecs, 702 false); 703 else 704 data = nfp_vnic_get_tlv_stats_strings(nn, data); 705 data = nfp_mac_get_stats_strings(netdev, data); 706 data = nfp_app_port_get_stats_strings(nn->port, data); 707 break; 708 } 709 } 710 711 static void 712 nfp_net_get_stats(struct net_device *netdev, struct ethtool_stats *stats, 713 u64 *data) 714 { 715 struct nfp_net *nn = netdev_priv(netdev); 716 717 data = nfp_vnic_get_sw_stats(netdev, data); 718 if (!nn->tlv_caps.vnic_stats_off) 719 data = nfp_vnic_get_hw_stats(data, nn->dp.ctrl_bar, 720 nn->max_r_vecs); 721 else 722 data = nfp_vnic_get_tlv_stats(nn, data); 723 data = nfp_mac_get_stats(netdev, data); 724 data = nfp_app_port_get_stats(nn->port, data); 725 } 726 727 static int nfp_net_get_sset_count(struct net_device *netdev, int sset) 728 { 729 struct nfp_net *nn = netdev_priv(netdev); 730 unsigned int cnt; 731 732 switch (sset) { 733 case ETH_SS_STATS: 734 cnt = nfp_vnic_get_sw_stats_count(netdev); 735 if (!nn->tlv_caps.vnic_stats_off) 736 cnt += nfp_vnic_get_hw_stats_count(nn->max_r_vecs); 737 else 738 cnt += nfp_vnic_get_tlv_stats_count(nn); 739 cnt += nfp_mac_get_stats_count(netdev); 740 cnt += nfp_app_port_get_stats_count(nn->port); 741 return cnt; 742 default: 743 return -EOPNOTSUPP; 744 } 745 } 746 747 static void nfp_port_get_strings(struct net_device *netdev, 748 u32 stringset, u8 *data) 749 { 750 struct nfp_port *port = nfp_port_from_netdev(netdev); 751 752 switch (stringset) { 753 case ETH_SS_STATS: 754 if (nfp_port_is_vnic(port)) 755 data = nfp_vnic_get_hw_stats_strings(data, 0, true); 756 else 757 data = nfp_mac_get_stats_strings(netdev, data); 758 data = nfp_app_port_get_stats_strings(port, data); 759 break; 760 } 761 } 762 763 static void 764 nfp_port_get_stats(struct net_device *netdev, struct ethtool_stats *stats, 765 u64 *data) 766 { 767 struct nfp_port *port = nfp_port_from_netdev(netdev); 768 769 if (nfp_port_is_vnic(port)) 770 data = nfp_vnic_get_hw_stats(data, port->vnic, 0); 771 else 772 data = nfp_mac_get_stats(netdev, data); 773 data = nfp_app_port_get_stats(port, data); 774 } 775 776 static int nfp_port_get_sset_count(struct net_device *netdev, int sset) 777 { 778 struct nfp_port *port = nfp_port_from_netdev(netdev); 779 unsigned int count; 780 781 switch (sset) { 782 case ETH_SS_STATS: 783 if (nfp_port_is_vnic(port)) 784 count = nfp_vnic_get_hw_stats_count(0); 785 else 786 count = nfp_mac_get_stats_count(netdev); 787 count += nfp_app_port_get_stats_count(port); 788 return count; 789 default: 790 return -EOPNOTSUPP; 791 } 792 } 793 794 static int nfp_port_fec_ethtool_to_nsp(u32 fec) 795 { 796 switch (fec) { 797 case ETHTOOL_FEC_AUTO: 798 return NFP_FEC_AUTO_BIT; 799 case ETHTOOL_FEC_OFF: 800 return NFP_FEC_DISABLED_BIT; 801 case ETHTOOL_FEC_RS: 802 return NFP_FEC_REED_SOLOMON_BIT; 803 case ETHTOOL_FEC_BASER: 804 return NFP_FEC_BASER_BIT; 805 default: 806 /* NSP only supports a single mode at a time */ 807 return -EOPNOTSUPP; 808 } 809 } 810 811 static u32 nfp_port_fec_nsp_to_ethtool(u32 fec) 812 { 813 u32 result = 0; 814 815 if (fec & NFP_FEC_AUTO) 816 result |= ETHTOOL_FEC_AUTO; 817 if (fec & NFP_FEC_BASER) 818 result |= ETHTOOL_FEC_BASER; 819 if (fec & NFP_FEC_REED_SOLOMON) 820 result |= ETHTOOL_FEC_RS; 821 if (fec & NFP_FEC_DISABLED) 822 result |= ETHTOOL_FEC_OFF; 823 824 return result ?: ETHTOOL_FEC_NONE; 825 } 826 827 static int 828 nfp_port_get_fecparam(struct net_device *netdev, 829 struct ethtool_fecparam *param) 830 { 831 struct nfp_eth_table_port *eth_port; 832 struct nfp_port *port; 833 834 param->active_fec = ETHTOOL_FEC_NONE_BIT; 835 param->fec = ETHTOOL_FEC_NONE_BIT; 836 837 port = nfp_port_from_netdev(netdev); 838 eth_port = nfp_port_get_eth_port(port); 839 if (!eth_port) 840 return -EOPNOTSUPP; 841 842 if (!nfp_eth_can_support_fec(eth_port)) 843 return 0; 844 845 param->fec = nfp_port_fec_nsp_to_ethtool(eth_port->fec_modes_supported); 846 param->active_fec = nfp_port_fec_nsp_to_ethtool(eth_port->fec); 847 848 return 0; 849 } 850 851 static int 852 nfp_port_set_fecparam(struct net_device *netdev, 853 struct ethtool_fecparam *param) 854 { 855 struct nfp_eth_table_port *eth_port; 856 struct nfp_port *port; 857 int err, fec; 858 859 port = nfp_port_from_netdev(netdev); 860 eth_port = nfp_port_get_eth_port(port); 861 if (!eth_port) 862 return -EOPNOTSUPP; 863 864 if (!nfp_eth_can_support_fec(eth_port)) 865 return -EOPNOTSUPP; 866 867 fec = nfp_port_fec_ethtool_to_nsp(param->fec); 868 if (fec < 0) 869 return fec; 870 871 err = nfp_eth_set_fec(port->app->cpp, eth_port->index, fec); 872 if (!err) 873 /* Only refresh if we did something */ 874 nfp_net_refresh_port_table(port); 875 876 return err < 0 ? err : 0; 877 } 878 879 /* RX network flow classification (RSS, filters, etc) 880 */ 881 static u32 ethtool_flow_to_nfp_flag(u32 flow_type) 882 { 883 static const u32 xlate_ethtool_to_nfp[IPV6_FLOW + 1] = { 884 [TCP_V4_FLOW] = NFP_NET_CFG_RSS_IPV4_TCP, 885 [TCP_V6_FLOW] = NFP_NET_CFG_RSS_IPV6_TCP, 886 [UDP_V4_FLOW] = NFP_NET_CFG_RSS_IPV4_UDP, 887 [UDP_V6_FLOW] = NFP_NET_CFG_RSS_IPV6_UDP, 888 [IPV4_FLOW] = NFP_NET_CFG_RSS_IPV4, 889 [IPV6_FLOW] = NFP_NET_CFG_RSS_IPV6, 890 }; 891 892 if (flow_type >= ARRAY_SIZE(xlate_ethtool_to_nfp)) 893 return 0; 894 895 return xlate_ethtool_to_nfp[flow_type]; 896 } 897 898 static int nfp_net_get_rss_hash_opts(struct nfp_net *nn, 899 struct ethtool_rxnfc *cmd) 900 { 901 u32 nfp_rss_flag; 902 903 cmd->data = 0; 904 905 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY)) 906 return -EOPNOTSUPP; 907 908 nfp_rss_flag = ethtool_flow_to_nfp_flag(cmd->flow_type); 909 if (!nfp_rss_flag) 910 return -EINVAL; 911 912 cmd->data |= RXH_IP_SRC | RXH_IP_DST; 913 if (nn->rss_cfg & nfp_rss_flag) 914 cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3; 915 916 return 0; 917 } 918 919 static int nfp_net_get_rxnfc(struct net_device *netdev, 920 struct ethtool_rxnfc *cmd, u32 *rule_locs) 921 { 922 struct nfp_net *nn = netdev_priv(netdev); 923 924 switch (cmd->cmd) { 925 case ETHTOOL_GRXRINGS: 926 cmd->data = nn->dp.num_rx_rings; 927 return 0; 928 case ETHTOOL_GRXFH: 929 return nfp_net_get_rss_hash_opts(nn, cmd); 930 default: 931 return -EOPNOTSUPP; 932 } 933 } 934 935 static int nfp_net_set_rss_hash_opt(struct nfp_net *nn, 936 struct ethtool_rxnfc *nfc) 937 { 938 u32 new_rss_cfg = nn->rss_cfg; 939 u32 nfp_rss_flag; 940 int err; 941 942 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY)) 943 return -EOPNOTSUPP; 944 945 /* RSS only supports IP SA/DA and L4 src/dst ports */ 946 if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST | 947 RXH_L4_B_0_1 | RXH_L4_B_2_3)) 948 return -EINVAL; 949 950 /* We need at least the IP SA/DA fields for hashing */ 951 if (!(nfc->data & RXH_IP_SRC) || 952 !(nfc->data & RXH_IP_DST)) 953 return -EINVAL; 954 955 nfp_rss_flag = ethtool_flow_to_nfp_flag(nfc->flow_type); 956 if (!nfp_rss_flag) 957 return -EINVAL; 958 959 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) { 960 case 0: 961 new_rss_cfg &= ~nfp_rss_flag; 962 break; 963 case (RXH_L4_B_0_1 | RXH_L4_B_2_3): 964 new_rss_cfg |= nfp_rss_flag; 965 break; 966 default: 967 return -EINVAL; 968 } 969 970 new_rss_cfg |= FIELD_PREP(NFP_NET_CFG_RSS_HFUNC, nn->rss_hfunc); 971 new_rss_cfg |= NFP_NET_CFG_RSS_MASK; 972 973 if (new_rss_cfg == nn->rss_cfg) 974 return 0; 975 976 writel(new_rss_cfg, nn->dp.ctrl_bar + NFP_NET_CFG_RSS_CTRL); 977 err = nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_RSS); 978 if (err) 979 return err; 980 981 nn->rss_cfg = new_rss_cfg; 982 983 nn_dbg(nn, "Changed RSS config to 0x%x\n", nn->rss_cfg); 984 return 0; 985 } 986 987 static int nfp_net_set_rxnfc(struct net_device *netdev, 988 struct ethtool_rxnfc *cmd) 989 { 990 struct nfp_net *nn = netdev_priv(netdev); 991 992 switch (cmd->cmd) { 993 case ETHTOOL_SRXFH: 994 return nfp_net_set_rss_hash_opt(nn, cmd); 995 default: 996 return -EOPNOTSUPP; 997 } 998 } 999 1000 static u32 nfp_net_get_rxfh_indir_size(struct net_device *netdev) 1001 { 1002 struct nfp_net *nn = netdev_priv(netdev); 1003 1004 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY)) 1005 return 0; 1006 1007 return ARRAY_SIZE(nn->rss_itbl); 1008 } 1009 1010 static u32 nfp_net_get_rxfh_key_size(struct net_device *netdev) 1011 { 1012 struct nfp_net *nn = netdev_priv(netdev); 1013 1014 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY)) 1015 return -EOPNOTSUPP; 1016 1017 return nfp_net_rss_key_sz(nn); 1018 } 1019 1020 static int nfp_net_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key, 1021 u8 *hfunc) 1022 { 1023 struct nfp_net *nn = netdev_priv(netdev); 1024 int i; 1025 1026 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY)) 1027 return -EOPNOTSUPP; 1028 1029 if (indir) 1030 for (i = 0; i < ARRAY_SIZE(nn->rss_itbl); i++) 1031 indir[i] = nn->rss_itbl[i]; 1032 if (key) 1033 memcpy(key, nn->rss_key, nfp_net_rss_key_sz(nn)); 1034 if (hfunc) { 1035 *hfunc = nn->rss_hfunc; 1036 if (*hfunc >= 1 << ETH_RSS_HASH_FUNCS_COUNT) 1037 *hfunc = ETH_RSS_HASH_UNKNOWN; 1038 } 1039 1040 return 0; 1041 } 1042 1043 static int nfp_net_set_rxfh(struct net_device *netdev, 1044 const u32 *indir, const u8 *key, 1045 const u8 hfunc) 1046 { 1047 struct nfp_net *nn = netdev_priv(netdev); 1048 int i; 1049 1050 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY) || 1051 !(hfunc == ETH_RSS_HASH_NO_CHANGE || hfunc == nn->rss_hfunc)) 1052 return -EOPNOTSUPP; 1053 1054 if (!key && !indir) 1055 return 0; 1056 1057 if (key) { 1058 memcpy(nn->rss_key, key, nfp_net_rss_key_sz(nn)); 1059 nfp_net_rss_write_key(nn); 1060 } 1061 if (indir) { 1062 for (i = 0; i < ARRAY_SIZE(nn->rss_itbl); i++) 1063 nn->rss_itbl[i] = indir[i]; 1064 1065 nfp_net_rss_write_itbl(nn); 1066 } 1067 1068 return nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_RSS); 1069 } 1070 1071 /* Dump BAR registers 1072 */ 1073 static int nfp_net_get_regs_len(struct net_device *netdev) 1074 { 1075 return NFP_NET_CFG_BAR_SZ; 1076 } 1077 1078 static void nfp_net_get_regs(struct net_device *netdev, 1079 struct ethtool_regs *regs, void *p) 1080 { 1081 struct nfp_net *nn = netdev_priv(netdev); 1082 u32 *regs_buf = p; 1083 int i; 1084 1085 regs->version = nn_readl(nn, NFP_NET_CFG_VERSION); 1086 1087 for (i = 0; i < NFP_NET_CFG_BAR_SZ / sizeof(u32); i++) 1088 regs_buf[i] = readl(nn->dp.ctrl_bar + (i * sizeof(u32))); 1089 } 1090 1091 static int nfp_net_get_coalesce(struct net_device *netdev, 1092 struct ethtool_coalesce *ec) 1093 { 1094 struct nfp_net *nn = netdev_priv(netdev); 1095 1096 if (!(nn->cap & NFP_NET_CFG_CTRL_IRQMOD)) 1097 return -EINVAL; 1098 1099 ec->rx_coalesce_usecs = nn->rx_coalesce_usecs; 1100 ec->rx_max_coalesced_frames = nn->rx_coalesce_max_frames; 1101 ec->tx_coalesce_usecs = nn->tx_coalesce_usecs; 1102 ec->tx_max_coalesced_frames = nn->tx_coalesce_max_frames; 1103 1104 return 0; 1105 } 1106 1107 /* Other debug dumps 1108 */ 1109 static int 1110 nfp_dump_nsp_diag(struct nfp_app *app, struct ethtool_dump *dump, void *buffer) 1111 { 1112 struct nfp_resource *res; 1113 int ret; 1114 1115 if (!app) 1116 return -EOPNOTSUPP; 1117 1118 dump->version = 1; 1119 dump->flag = NFP_DUMP_NSP_DIAG; 1120 1121 res = nfp_resource_acquire(app->cpp, NFP_RESOURCE_NSP_DIAG); 1122 if (IS_ERR(res)) 1123 return PTR_ERR(res); 1124 1125 if (buffer) { 1126 if (dump->len != nfp_resource_size(res)) { 1127 ret = -EINVAL; 1128 goto exit_release; 1129 } 1130 1131 ret = nfp_cpp_read(app->cpp, nfp_resource_cpp_id(res), 1132 nfp_resource_address(res), 1133 buffer, dump->len); 1134 if (ret != dump->len) 1135 ret = ret < 0 ? ret : -EIO; 1136 else 1137 ret = 0; 1138 } else { 1139 dump->len = nfp_resource_size(res); 1140 ret = 0; 1141 } 1142 exit_release: 1143 nfp_resource_release(res); 1144 1145 return ret; 1146 } 1147 1148 /* Set the dump flag/level. Calculate the dump length for flag > 0 only (new TLV 1149 * based dumps), since flag 0 (default) calculates the length in 1150 * nfp_app_get_dump_flag(), and we need to support triggering a level 0 dump 1151 * without setting the flag first, for backward compatibility. 1152 */ 1153 static int nfp_app_set_dump(struct net_device *netdev, struct ethtool_dump *val) 1154 { 1155 struct nfp_app *app = nfp_app_from_netdev(netdev); 1156 s64 len; 1157 1158 if (!app) 1159 return -EOPNOTSUPP; 1160 1161 if (val->flag == NFP_DUMP_NSP_DIAG) { 1162 app->pf->dump_flag = val->flag; 1163 return 0; 1164 } 1165 1166 if (!app->pf->dumpspec) 1167 return -EOPNOTSUPP; 1168 1169 len = nfp_net_dump_calculate_size(app->pf, app->pf->dumpspec, 1170 val->flag); 1171 if (len < 0) 1172 return len; 1173 1174 app->pf->dump_flag = val->flag; 1175 app->pf->dump_len = len; 1176 1177 return 0; 1178 } 1179 1180 static int 1181 nfp_app_get_dump_flag(struct net_device *netdev, struct ethtool_dump *dump) 1182 { 1183 struct nfp_app *app = nfp_app_from_netdev(netdev); 1184 1185 if (!app) 1186 return -EOPNOTSUPP; 1187 1188 if (app->pf->dump_flag == NFP_DUMP_NSP_DIAG) 1189 return nfp_dump_nsp_diag(app, dump, NULL); 1190 1191 dump->flag = app->pf->dump_flag; 1192 dump->len = app->pf->dump_len; 1193 1194 return 0; 1195 } 1196 1197 static int 1198 nfp_app_get_dump_data(struct net_device *netdev, struct ethtool_dump *dump, 1199 void *buffer) 1200 { 1201 struct nfp_app *app = nfp_app_from_netdev(netdev); 1202 1203 if (!app) 1204 return -EOPNOTSUPP; 1205 1206 if (app->pf->dump_flag == NFP_DUMP_NSP_DIAG) 1207 return nfp_dump_nsp_diag(app, dump, buffer); 1208 1209 dump->flag = app->pf->dump_flag; 1210 dump->len = app->pf->dump_len; 1211 1212 return nfp_net_dump_populate_buffer(app->pf, app->pf->dumpspec, dump, 1213 buffer); 1214 } 1215 1216 static int 1217 nfp_port_get_module_info(struct net_device *netdev, 1218 struct ethtool_modinfo *modinfo) 1219 { 1220 struct nfp_eth_table_port *eth_port; 1221 struct nfp_port *port; 1222 unsigned int read_len; 1223 struct nfp_nsp *nsp; 1224 int err = 0; 1225 u8 data; 1226 1227 port = nfp_port_from_netdev(netdev); 1228 eth_port = nfp_port_get_eth_port(port); 1229 if (!eth_port) 1230 return -EOPNOTSUPP; 1231 1232 nsp = nfp_nsp_open(port->app->cpp); 1233 if (IS_ERR(nsp)) { 1234 err = PTR_ERR(nsp); 1235 netdev_err(netdev, "Failed to access the NSP: %d\n", err); 1236 return err; 1237 } 1238 1239 if (!nfp_nsp_has_read_module_eeprom(nsp)) { 1240 netdev_info(netdev, "reading module EEPROM not supported. Please update flash\n"); 1241 err = -EOPNOTSUPP; 1242 goto exit_close_nsp; 1243 } 1244 1245 switch (eth_port->interface) { 1246 case NFP_INTERFACE_SFP: 1247 case NFP_INTERFACE_SFP28: 1248 err = nfp_nsp_read_module_eeprom(nsp, eth_port->eth_index, 1249 SFP_SFF8472_COMPLIANCE, &data, 1250 1, &read_len); 1251 if (err < 0) 1252 goto exit_close_nsp; 1253 1254 if (!data) { 1255 modinfo->type = ETH_MODULE_SFF_8079; 1256 modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN; 1257 } else { 1258 modinfo->type = ETH_MODULE_SFF_8472; 1259 modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN; 1260 } 1261 break; 1262 case NFP_INTERFACE_QSFP: 1263 err = nfp_nsp_read_module_eeprom(nsp, eth_port->eth_index, 1264 SFP_SFF_REV_COMPLIANCE, &data, 1265 1, &read_len); 1266 if (err < 0) 1267 goto exit_close_nsp; 1268 1269 if (data < 0x3) { 1270 modinfo->type = ETH_MODULE_SFF_8436; 1271 modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN; 1272 } else { 1273 modinfo->type = ETH_MODULE_SFF_8636; 1274 modinfo->eeprom_len = ETH_MODULE_SFF_8636_LEN; 1275 } 1276 break; 1277 case NFP_INTERFACE_QSFP28: 1278 modinfo->type = ETH_MODULE_SFF_8636; 1279 modinfo->eeprom_len = ETH_MODULE_SFF_8636_LEN; 1280 break; 1281 default: 1282 netdev_err(netdev, "Unsupported module 0x%x detected\n", 1283 eth_port->interface); 1284 err = -EINVAL; 1285 } 1286 1287 exit_close_nsp: 1288 nfp_nsp_close(nsp); 1289 return err; 1290 } 1291 1292 static int 1293 nfp_port_get_module_eeprom(struct net_device *netdev, 1294 struct ethtool_eeprom *eeprom, u8 *data) 1295 { 1296 struct nfp_eth_table_port *eth_port; 1297 struct nfp_port *port; 1298 struct nfp_nsp *nsp; 1299 int err; 1300 1301 port = nfp_port_from_netdev(netdev); 1302 eth_port = __nfp_port_get_eth_port(port); 1303 if (!eth_port) 1304 return -EOPNOTSUPP; 1305 1306 nsp = nfp_nsp_open(port->app->cpp); 1307 if (IS_ERR(nsp)) { 1308 err = PTR_ERR(nsp); 1309 netdev_err(netdev, "Failed to access the NSP: %d\n", err); 1310 return err; 1311 } 1312 1313 if (!nfp_nsp_has_read_module_eeprom(nsp)) { 1314 netdev_info(netdev, "reading module EEPROM not supported. Please update flash\n"); 1315 err = -EOPNOTSUPP; 1316 goto exit_close_nsp; 1317 } 1318 1319 err = nfp_nsp_read_module_eeprom(nsp, eth_port->eth_index, 1320 eeprom->offset, data, eeprom->len, 1321 &eeprom->len); 1322 if (err < 0) { 1323 if (eeprom->len) { 1324 netdev_warn(netdev, 1325 "Incomplete read from module EEPROM: %d\n", 1326 err); 1327 err = 0; 1328 } else { 1329 netdev_err(netdev, 1330 "Reading from module EEPROM failed: %d\n", 1331 err); 1332 } 1333 } 1334 1335 exit_close_nsp: 1336 nfp_nsp_close(nsp); 1337 return err; 1338 } 1339 1340 static int nfp_net_set_coalesce(struct net_device *netdev, 1341 struct ethtool_coalesce *ec) 1342 { 1343 struct nfp_net *nn = netdev_priv(netdev); 1344 unsigned int factor; 1345 1346 /* Compute factor used to convert coalesce '_usecs' parameters to 1347 * ME timestamp ticks. There are 16 ME clock cycles for each timestamp 1348 * count. 1349 */ 1350 factor = nn->me_freq_mhz / 16; 1351 1352 /* Each pair of (usecs, max_frames) fields specifies that interrupts 1353 * should be coalesced until 1354 * (usecs > 0 && time_since_first_completion >= usecs) || 1355 * (max_frames > 0 && completed_frames >= max_frames) 1356 * 1357 * It is illegal to set both usecs and max_frames to zero as this would 1358 * cause interrupts to never be generated. To disable coalescing, set 1359 * usecs = 0 and max_frames = 1. 1360 * 1361 * Some implementations ignore the value of max_frames and use the 1362 * condition time_since_first_completion >= usecs 1363 */ 1364 1365 if (!(nn->cap & NFP_NET_CFG_CTRL_IRQMOD)) 1366 return -EINVAL; 1367 1368 /* ensure valid configuration */ 1369 if (!ec->rx_coalesce_usecs && !ec->rx_max_coalesced_frames) 1370 return -EINVAL; 1371 1372 if (!ec->tx_coalesce_usecs && !ec->tx_max_coalesced_frames) 1373 return -EINVAL; 1374 1375 if (ec->rx_coalesce_usecs * factor >= ((1 << 16) - 1)) 1376 return -EINVAL; 1377 1378 if (ec->tx_coalesce_usecs * factor >= ((1 << 16) - 1)) 1379 return -EINVAL; 1380 1381 if (ec->rx_max_coalesced_frames >= ((1 << 16) - 1)) 1382 return -EINVAL; 1383 1384 if (ec->tx_max_coalesced_frames >= ((1 << 16) - 1)) 1385 return -EINVAL; 1386 1387 /* configuration is valid */ 1388 nn->rx_coalesce_usecs = ec->rx_coalesce_usecs; 1389 nn->rx_coalesce_max_frames = ec->rx_max_coalesced_frames; 1390 nn->tx_coalesce_usecs = ec->tx_coalesce_usecs; 1391 nn->tx_coalesce_max_frames = ec->tx_max_coalesced_frames; 1392 1393 /* write configuration to device */ 1394 nfp_net_coalesce_write_cfg(nn); 1395 return nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_IRQMOD); 1396 } 1397 1398 static void nfp_net_get_channels(struct net_device *netdev, 1399 struct ethtool_channels *channel) 1400 { 1401 struct nfp_net *nn = netdev_priv(netdev); 1402 unsigned int num_tx_rings; 1403 1404 num_tx_rings = nn->dp.num_tx_rings; 1405 if (nn->dp.xdp_prog) 1406 num_tx_rings -= nn->dp.num_rx_rings; 1407 1408 channel->max_rx = min(nn->max_rx_rings, nn->max_r_vecs); 1409 channel->max_tx = min(nn->max_tx_rings, nn->max_r_vecs); 1410 channel->max_combined = min(channel->max_rx, channel->max_tx); 1411 channel->max_other = NFP_NET_NON_Q_VECTORS; 1412 channel->combined_count = min(nn->dp.num_rx_rings, num_tx_rings); 1413 channel->rx_count = nn->dp.num_rx_rings - channel->combined_count; 1414 channel->tx_count = num_tx_rings - channel->combined_count; 1415 channel->other_count = NFP_NET_NON_Q_VECTORS; 1416 } 1417 1418 static int nfp_net_set_num_rings(struct nfp_net *nn, unsigned int total_rx, 1419 unsigned int total_tx) 1420 { 1421 struct nfp_net_dp *dp; 1422 1423 dp = nfp_net_clone_dp(nn); 1424 if (!dp) 1425 return -ENOMEM; 1426 1427 dp->num_rx_rings = total_rx; 1428 dp->num_tx_rings = total_tx; 1429 /* nfp_net_check_config() will catch num_tx_rings > nn->max_tx_rings */ 1430 if (dp->xdp_prog) 1431 dp->num_tx_rings += total_rx; 1432 1433 return nfp_net_ring_reconfig(nn, dp, NULL); 1434 } 1435 1436 static int nfp_net_set_channels(struct net_device *netdev, 1437 struct ethtool_channels *channel) 1438 { 1439 struct nfp_net *nn = netdev_priv(netdev); 1440 unsigned int total_rx, total_tx; 1441 1442 /* Reject unsupported */ 1443 if (!channel->combined_count || 1444 channel->other_count != NFP_NET_NON_Q_VECTORS || 1445 (channel->rx_count && channel->tx_count)) 1446 return -EINVAL; 1447 1448 total_rx = channel->combined_count + channel->rx_count; 1449 total_tx = channel->combined_count + channel->tx_count; 1450 1451 if (total_rx > min(nn->max_rx_rings, nn->max_r_vecs) || 1452 total_tx > min(nn->max_tx_rings, nn->max_r_vecs)) 1453 return -EINVAL; 1454 1455 return nfp_net_set_num_rings(nn, total_rx, total_tx); 1456 } 1457 1458 static const struct ethtool_ops nfp_net_ethtool_ops = { 1459 .supported_coalesce_params = ETHTOOL_COALESCE_USECS | 1460 ETHTOOL_COALESCE_MAX_FRAMES, 1461 .get_drvinfo = nfp_net_get_drvinfo, 1462 .get_link = ethtool_op_get_link, 1463 .get_ringparam = nfp_net_get_ringparam, 1464 .set_ringparam = nfp_net_set_ringparam, 1465 .get_strings = nfp_net_get_strings, 1466 .get_ethtool_stats = nfp_net_get_stats, 1467 .get_sset_count = nfp_net_get_sset_count, 1468 .get_rxnfc = nfp_net_get_rxnfc, 1469 .set_rxnfc = nfp_net_set_rxnfc, 1470 .get_rxfh_indir_size = nfp_net_get_rxfh_indir_size, 1471 .get_rxfh_key_size = nfp_net_get_rxfh_key_size, 1472 .get_rxfh = nfp_net_get_rxfh, 1473 .set_rxfh = nfp_net_set_rxfh, 1474 .get_regs_len = nfp_net_get_regs_len, 1475 .get_regs = nfp_net_get_regs, 1476 .set_dump = nfp_app_set_dump, 1477 .get_dump_flag = nfp_app_get_dump_flag, 1478 .get_dump_data = nfp_app_get_dump_data, 1479 .get_module_info = nfp_port_get_module_info, 1480 .get_module_eeprom = nfp_port_get_module_eeprom, 1481 .get_coalesce = nfp_net_get_coalesce, 1482 .set_coalesce = nfp_net_set_coalesce, 1483 .get_channels = nfp_net_get_channels, 1484 .set_channels = nfp_net_set_channels, 1485 .get_link_ksettings = nfp_net_get_link_ksettings, 1486 .set_link_ksettings = nfp_net_set_link_ksettings, 1487 .get_fecparam = nfp_port_get_fecparam, 1488 .set_fecparam = nfp_port_set_fecparam, 1489 }; 1490 1491 const struct ethtool_ops nfp_port_ethtool_ops = { 1492 .get_drvinfo = nfp_app_get_drvinfo, 1493 .get_link = ethtool_op_get_link, 1494 .get_strings = nfp_port_get_strings, 1495 .get_ethtool_stats = nfp_port_get_stats, 1496 .get_sset_count = nfp_port_get_sset_count, 1497 .set_dump = nfp_app_set_dump, 1498 .get_dump_flag = nfp_app_get_dump_flag, 1499 .get_dump_data = nfp_app_get_dump_data, 1500 .get_module_info = nfp_port_get_module_info, 1501 .get_module_eeprom = nfp_port_get_module_eeprom, 1502 .get_link_ksettings = nfp_net_get_link_ksettings, 1503 .set_link_ksettings = nfp_net_set_link_ksettings, 1504 .get_fecparam = nfp_port_get_fecparam, 1505 .set_fecparam = nfp_port_set_fecparam, 1506 }; 1507 1508 void nfp_net_set_ethtool_ops(struct net_device *netdev) 1509 { 1510 netdev->ethtool_ops = &nfp_net_ethtool_ops; 1511 } 1512