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