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