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