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