1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2 /* Copyright (C) 2015-2018 Netronome Systems, Inc. */ 3 4 /* 5 * nfp_net_ethtool.c 6 * Netronome network device driver: ethtool support 7 * Authors: Jakub Kicinski <jakub.kicinski@netronome.com> 8 * Jason McMullan <jason.mcmullan@netronome.com> 9 * Rolf Neugebauer <rolf.neugebauer@netronome.com> 10 * Brad Petrus <brad.petrus@netronome.com> 11 */ 12 13 #include <linux/bitfield.h> 14 #include <linux/kernel.h> 15 #include <linux/netdevice.h> 16 #include <linux/etherdevice.h> 17 #include <linux/interrupt.h> 18 #include <linux/pci.h> 19 #include <linux/ethtool.h> 20 #include <linux/firmware.h> 21 #include <linux/sfp.h> 22 23 #include "nfpcore/nfp.h" 24 #include "nfpcore/nfp_nsp.h" 25 #include "nfp_app.h" 26 #include "nfp_main.h" 27 #include "nfp_net_ctrl.h" 28 #include "nfp_net.h" 29 #include "nfp_port.h" 30 31 struct nfp_et_stat { 32 char name[ETH_GSTRING_LEN]; 33 int off; 34 }; 35 36 static const struct nfp_et_stat nfp_net_et_stats[] = { 37 /* Stats from the device */ 38 { "dev_rx_discards", NFP_NET_CFG_STATS_RX_DISCARDS }, 39 { "dev_rx_errors", NFP_NET_CFG_STATS_RX_ERRORS }, 40 { "dev_rx_bytes", NFP_NET_CFG_STATS_RX_OCTETS }, 41 { "dev_rx_uc_bytes", NFP_NET_CFG_STATS_RX_UC_OCTETS }, 42 { "dev_rx_mc_bytes", NFP_NET_CFG_STATS_RX_MC_OCTETS }, 43 { "dev_rx_bc_bytes", NFP_NET_CFG_STATS_RX_BC_OCTETS }, 44 { "dev_rx_pkts", NFP_NET_CFG_STATS_RX_FRAMES }, 45 { "dev_rx_mc_pkts", NFP_NET_CFG_STATS_RX_MC_FRAMES }, 46 { "dev_rx_bc_pkts", NFP_NET_CFG_STATS_RX_BC_FRAMES }, 47 48 { "dev_tx_discards", NFP_NET_CFG_STATS_TX_DISCARDS }, 49 { "dev_tx_errors", NFP_NET_CFG_STATS_TX_ERRORS }, 50 { "dev_tx_bytes", NFP_NET_CFG_STATS_TX_OCTETS }, 51 { "dev_tx_uc_bytes", NFP_NET_CFG_STATS_TX_UC_OCTETS }, 52 { "dev_tx_mc_bytes", NFP_NET_CFG_STATS_TX_MC_OCTETS }, 53 { "dev_tx_bc_bytes", NFP_NET_CFG_STATS_TX_BC_OCTETS }, 54 { "dev_tx_pkts", NFP_NET_CFG_STATS_TX_FRAMES }, 55 { "dev_tx_mc_pkts", NFP_NET_CFG_STATS_TX_MC_FRAMES }, 56 { "dev_tx_bc_pkts", NFP_NET_CFG_STATS_TX_BC_FRAMES }, 57 58 { "bpf_pass_pkts", NFP_NET_CFG_STATS_APP0_FRAMES }, 59 { "bpf_pass_bytes", NFP_NET_CFG_STATS_APP0_BYTES }, 60 /* see comments in outro functions in nfp_bpf_jit.c to find out 61 * how different BPF modes use app-specific counters 62 */ 63 { "bpf_app1_pkts", NFP_NET_CFG_STATS_APP1_FRAMES }, 64 { "bpf_app1_bytes", NFP_NET_CFG_STATS_APP1_BYTES }, 65 { "bpf_app2_pkts", NFP_NET_CFG_STATS_APP2_FRAMES }, 66 { "bpf_app2_bytes", NFP_NET_CFG_STATS_APP2_BYTES }, 67 { "bpf_app3_pkts", NFP_NET_CFG_STATS_APP3_FRAMES }, 68 { "bpf_app3_bytes", NFP_NET_CFG_STATS_APP3_BYTES }, 69 }; 70 71 static const struct nfp_et_stat nfp_mac_et_stats[] = { 72 { "rx_octets", NFP_MAC_STATS_RX_IN_OCTETS, }, 73 { "rx_frame_too_long_errors", 74 NFP_MAC_STATS_RX_FRAME_TOO_LONG_ERRORS, }, 75 { "rx_range_length_errors", NFP_MAC_STATS_RX_RANGE_LENGTH_ERRORS, }, 76 { "rx_vlan_received_ok", NFP_MAC_STATS_RX_VLAN_RECEIVED_OK, }, 77 { "rx_errors", NFP_MAC_STATS_RX_IN_ERRORS, }, 78 { "rx_broadcast_pkts", NFP_MAC_STATS_RX_IN_BROADCAST_PKTS, }, 79 { "rx_drop_events", NFP_MAC_STATS_RX_DROP_EVENTS, }, 80 { "rx_alignment_errors", NFP_MAC_STATS_RX_ALIGNMENT_ERRORS, }, 81 { "rx_pause_mac_ctrl_frames", 82 NFP_MAC_STATS_RX_PAUSE_MAC_CTRL_FRAMES, }, 83 { "rx_frames_received_ok", NFP_MAC_STATS_RX_FRAMES_RECEIVED_OK, }, 84 { "rx_frame_check_sequence_errors", 85 NFP_MAC_STATS_RX_FRAME_CHECK_SEQUENCE_ERRORS, }, 86 { "rx_unicast_pkts", NFP_MAC_STATS_RX_UNICAST_PKTS, }, 87 { "rx_multicast_pkts", NFP_MAC_STATS_RX_MULTICAST_PKTS, }, 88 { "rx_pkts", NFP_MAC_STATS_RX_PKTS, }, 89 { "rx_undersize_pkts", NFP_MAC_STATS_RX_UNDERSIZE_PKTS, }, 90 { "rx_pkts_64_octets", NFP_MAC_STATS_RX_PKTS_64_OCTETS, }, 91 { "rx_pkts_65_to_127_octets", 92 NFP_MAC_STATS_RX_PKTS_65_TO_127_OCTETS, }, 93 { "rx_pkts_128_to_255_octets", 94 NFP_MAC_STATS_RX_PKTS_128_TO_255_OCTETS, }, 95 { "rx_pkts_256_to_511_octets", 96 NFP_MAC_STATS_RX_PKTS_256_TO_511_OCTETS, }, 97 { "rx_pkts_512_to_1023_octets", 98 NFP_MAC_STATS_RX_PKTS_512_TO_1023_OCTETS, }, 99 { "rx_pkts_1024_to_1518_octets", 100 NFP_MAC_STATS_RX_PKTS_1024_TO_1518_OCTETS, }, 101 { "rx_pkts_1519_to_max_octets", 102 NFP_MAC_STATS_RX_PKTS_1519_TO_MAX_OCTETS, }, 103 { "rx_jabbers", NFP_MAC_STATS_RX_JABBERS, }, 104 { "rx_fragments", NFP_MAC_STATS_RX_FRAGMENTS, }, 105 { "rx_oversize_pkts", NFP_MAC_STATS_RX_OVERSIZE_PKTS, }, 106 { "rx_pause_frames_class0", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS0, }, 107 { "rx_pause_frames_class1", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS1, }, 108 { "rx_pause_frames_class2", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS2, }, 109 { "rx_pause_frames_class3", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS3, }, 110 { "rx_pause_frames_class4", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS4, }, 111 { "rx_pause_frames_class5", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS5, }, 112 { "rx_pause_frames_class6", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS6, }, 113 { "rx_pause_frames_class7", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS7, }, 114 { "rx_mac_ctrl_frames_received", 115 NFP_MAC_STATS_RX_MAC_CTRL_FRAMES_RECEIVED, }, 116 { "rx_mac_head_drop", NFP_MAC_STATS_RX_MAC_HEAD_DROP, }, 117 { "tx_queue_drop", NFP_MAC_STATS_TX_QUEUE_DROP, }, 118 { "tx_octets", NFP_MAC_STATS_TX_OUT_OCTETS, }, 119 { "tx_vlan_transmitted_ok", NFP_MAC_STATS_TX_VLAN_TRANSMITTED_OK, }, 120 { "tx_errors", NFP_MAC_STATS_TX_OUT_ERRORS, }, 121 { "tx_broadcast_pkts", NFP_MAC_STATS_TX_BROADCAST_PKTS, }, 122 { "tx_pause_mac_ctrl_frames", 123 NFP_MAC_STATS_TX_PAUSE_MAC_CTRL_FRAMES, }, 124 { "tx_frames_transmitted_ok", 125 NFP_MAC_STATS_TX_FRAMES_TRANSMITTED_OK, }, 126 { "tx_unicast_pkts", NFP_MAC_STATS_TX_UNICAST_PKTS, }, 127 { "tx_multicast_pkts", NFP_MAC_STATS_TX_MULTICAST_PKTS, }, 128 { "tx_pkts_64_octets", NFP_MAC_STATS_TX_PKTS_64_OCTETS, }, 129 { "tx_pkts_65_to_127_octets", 130 NFP_MAC_STATS_TX_PKTS_65_TO_127_OCTETS, }, 131 { "tx_pkts_128_to_255_octets", 132 NFP_MAC_STATS_TX_PKTS_128_TO_255_OCTETS, }, 133 { "tx_pkts_256_to_511_octets", 134 NFP_MAC_STATS_TX_PKTS_256_TO_511_OCTETS, }, 135 { "tx_pkts_512_to_1023_octets", 136 NFP_MAC_STATS_TX_PKTS_512_TO_1023_OCTETS, }, 137 { "tx_pkts_1024_to_1518_octets", 138 NFP_MAC_STATS_TX_PKTS_1024_TO_1518_OCTETS, }, 139 { "tx_pkts_1519_to_max_octets", 140 NFP_MAC_STATS_TX_PKTS_1519_TO_MAX_OCTETS, }, 141 { "tx_pause_frames_class0", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS0, }, 142 { "tx_pause_frames_class1", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS1, }, 143 { "tx_pause_frames_class2", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS2, }, 144 { "tx_pause_frames_class3", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS3, }, 145 { "tx_pause_frames_class4", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS4, }, 146 { "tx_pause_frames_class5", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS5, }, 147 { "tx_pause_frames_class6", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS6, }, 148 { "tx_pause_frames_class7", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS7, }, 149 }; 150 151 static const char nfp_tlv_stat_names[][ETH_GSTRING_LEN] = { 152 [1] = "dev_rx_discards", 153 [2] = "dev_rx_errors", 154 [3] = "dev_rx_bytes", 155 [4] = "dev_rx_uc_bytes", 156 [5] = "dev_rx_mc_bytes", 157 [6] = "dev_rx_bc_bytes", 158 [7] = "dev_rx_pkts", 159 [8] = "dev_rx_mc_pkts", 160 [9] = "dev_rx_bc_pkts", 161 162 [10] = "dev_tx_discards", 163 [11] = "dev_tx_errors", 164 [12] = "dev_tx_bytes", 165 [13] = "dev_tx_uc_bytes", 166 [14] = "dev_tx_mc_bytes", 167 [15] = "dev_tx_bc_bytes", 168 [16] = "dev_tx_pkts", 169 [17] = "dev_tx_mc_pkts", 170 [18] = "dev_tx_bc_pkts", 171 }; 172 173 #define NN_ET_GLOBAL_STATS_LEN ARRAY_SIZE(nfp_net_et_stats) 174 #define NN_ET_SWITCH_STATS_LEN 9 175 #define NN_RVEC_GATHER_STATS 13 176 #define NN_RVEC_PER_Q_STATS 3 177 #define NN_CTRL_PATH_STATS 4 178 179 #define SFP_SFF_REV_COMPLIANCE 1 180 181 static void nfp_net_get_nspinfo(struct nfp_app *app, char *version) 182 { 183 struct nfp_nsp *nsp; 184 185 if (!app) 186 return; 187 188 nsp = nfp_nsp_open(app->cpp); 189 if (IS_ERR(nsp)) 190 return; 191 192 snprintf(version, ETHTOOL_FWVERS_LEN, "%hu.%hu", 193 nfp_nsp_get_abi_ver_major(nsp), 194 nfp_nsp_get_abi_ver_minor(nsp)); 195 196 nfp_nsp_close(nsp); 197 } 198 199 static void 200 nfp_get_drvinfo(struct nfp_app *app, struct pci_dev *pdev, 201 const char *vnic_version, struct ethtool_drvinfo *drvinfo) 202 { 203 char nsp_version[ETHTOOL_FWVERS_LEN] = {}; 204 205 strlcpy(drvinfo->driver, pdev->driver->name, sizeof(drvinfo->driver)); 206 nfp_net_get_nspinfo(app, nsp_version); 207 snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version), 208 "%s %s %s %s", vnic_version, nsp_version, 209 nfp_app_mip_name(app), nfp_app_name(app)); 210 } 211 212 static void 213 nfp_net_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo) 214 { 215 char vnic_version[ETHTOOL_FWVERS_LEN] = {}; 216 struct nfp_net *nn = netdev_priv(netdev); 217 218 snprintf(vnic_version, sizeof(vnic_version), "%d.%d.%d.%d", 219 nn->fw_ver.resv, nn->fw_ver.class, 220 nn->fw_ver.major, nn->fw_ver.minor); 221 strlcpy(drvinfo->bus_info, pci_name(nn->pdev), 222 sizeof(drvinfo->bus_info)); 223 224 nfp_get_drvinfo(nn->app, nn->pdev, vnic_version, drvinfo); 225 } 226 227 static void 228 nfp_app_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo) 229 { 230 struct nfp_app *app = nfp_app_from_netdev(netdev); 231 232 strlcpy(drvinfo->bus_info, pci_name(app->pdev), 233 sizeof(drvinfo->bus_info)); 234 nfp_get_drvinfo(app, app->pdev, "*", drvinfo); 235 } 236 237 static void 238 nfp_net_set_fec_link_mode(struct nfp_eth_table_port *eth_port, 239 struct ethtool_link_ksettings *c) 240 { 241 unsigned int modes; 242 243 ethtool_link_ksettings_add_link_mode(c, supported, FEC_NONE); 244 if (!nfp_eth_can_support_fec(eth_port)) { 245 ethtool_link_ksettings_add_link_mode(c, advertising, FEC_NONE); 246 return; 247 } 248 249 modes = nfp_eth_supported_fec_modes(eth_port); 250 if (modes & NFP_FEC_BASER) { 251 ethtool_link_ksettings_add_link_mode(c, supported, FEC_BASER); 252 ethtool_link_ksettings_add_link_mode(c, advertising, FEC_BASER); 253 } 254 255 if (modes & NFP_FEC_REED_SOLOMON) { 256 ethtool_link_ksettings_add_link_mode(c, supported, FEC_RS); 257 ethtool_link_ksettings_add_link_mode(c, advertising, FEC_RS); 258 } 259 } 260 261 /** 262 * nfp_net_get_link_ksettings - Get Link Speed settings 263 * @netdev: network interface device structure 264 * @cmd: ethtool command 265 * 266 * Reports speed settings based on info in the BAR provided by the fw. 267 */ 268 static int 269 nfp_net_get_link_ksettings(struct net_device *netdev, 270 struct ethtool_link_ksettings *cmd) 271 { 272 static const u32 ls_to_ethtool[] = { 273 [NFP_NET_CFG_STS_LINK_RATE_UNSUPPORTED] = 0, 274 [NFP_NET_CFG_STS_LINK_RATE_UNKNOWN] = SPEED_UNKNOWN, 275 [NFP_NET_CFG_STS_LINK_RATE_1G] = SPEED_1000, 276 [NFP_NET_CFG_STS_LINK_RATE_10G] = SPEED_10000, 277 [NFP_NET_CFG_STS_LINK_RATE_25G] = SPEED_25000, 278 [NFP_NET_CFG_STS_LINK_RATE_40G] = SPEED_40000, 279 [NFP_NET_CFG_STS_LINK_RATE_50G] = SPEED_50000, 280 [NFP_NET_CFG_STS_LINK_RATE_100G] = SPEED_100000, 281 }; 282 struct nfp_eth_table_port *eth_port; 283 struct nfp_port *port; 284 struct nfp_net *nn; 285 u32 sts, ls; 286 287 /* Init to unknowns */ 288 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE); 289 cmd->base.port = PORT_OTHER; 290 cmd->base.speed = SPEED_UNKNOWN; 291 cmd->base.duplex = DUPLEX_UNKNOWN; 292 293 port = nfp_port_from_netdev(netdev); 294 eth_port = nfp_port_get_eth_port(port); 295 if (eth_port) { 296 cmd->base.autoneg = eth_port->aneg != NFP_ANEG_DISABLED ? 297 AUTONEG_ENABLE : AUTONEG_DISABLE; 298 nfp_net_set_fec_link_mode(eth_port, cmd); 299 } 300 301 if (!netif_carrier_ok(netdev)) 302 return 0; 303 304 /* Use link speed from ETH table if available, otherwise try the BAR */ 305 if (eth_port) { 306 cmd->base.port = eth_port->port_type; 307 cmd->base.speed = eth_port->speed; 308 cmd->base.duplex = DUPLEX_FULL; 309 return 0; 310 } 311 312 if (!nfp_netdev_is_nfp_net(netdev)) 313 return -EOPNOTSUPP; 314 nn = netdev_priv(netdev); 315 316 sts = nn_readl(nn, NFP_NET_CFG_STS); 317 318 ls = FIELD_GET(NFP_NET_CFG_STS_LINK_RATE, sts); 319 if (ls == NFP_NET_CFG_STS_LINK_RATE_UNSUPPORTED) 320 return -EOPNOTSUPP; 321 322 if (ls == NFP_NET_CFG_STS_LINK_RATE_UNKNOWN || 323 ls >= ARRAY_SIZE(ls_to_ethtool)) 324 return 0; 325 326 cmd->base.speed = ls_to_ethtool[ls]; 327 cmd->base.duplex = DUPLEX_FULL; 328 329 return 0; 330 } 331 332 static int 333 nfp_net_set_link_ksettings(struct net_device *netdev, 334 const struct ethtool_link_ksettings *cmd) 335 { 336 struct nfp_eth_table_port *eth_port; 337 struct nfp_port *port; 338 struct nfp_nsp *nsp; 339 int err; 340 341 port = nfp_port_from_netdev(netdev); 342 eth_port = __nfp_port_get_eth_port(port); 343 if (!eth_port) 344 return -EOPNOTSUPP; 345 346 if (netif_running(netdev)) { 347 netdev_warn(netdev, "Changing settings not allowed on an active interface. It may cause the port to be disabled until driver reload.\n"); 348 return -EBUSY; 349 } 350 351 nsp = nfp_eth_config_start(port->app->cpp, eth_port->index); 352 if (IS_ERR(nsp)) 353 return PTR_ERR(nsp); 354 355 err = __nfp_eth_set_aneg(nsp, cmd->base.autoneg == AUTONEG_ENABLE ? 356 NFP_ANEG_AUTO : NFP_ANEG_DISABLED); 357 if (err) 358 goto err_bad_set; 359 if (cmd->base.speed != SPEED_UNKNOWN) { 360 u32 speed = cmd->base.speed / eth_port->lanes; 361 362 err = __nfp_eth_set_speed(nsp, speed); 363 if (err) 364 goto err_bad_set; 365 } 366 367 err = nfp_eth_config_commit_end(nsp); 368 if (err > 0) 369 return 0; /* no change */ 370 371 nfp_net_refresh_port_table(port); 372 373 return err; 374 375 err_bad_set: 376 nfp_eth_config_cleanup_end(nsp); 377 return err; 378 } 379 380 static void nfp_net_get_ringparam(struct net_device *netdev, 381 struct ethtool_ringparam *ring) 382 { 383 struct nfp_net *nn = netdev_priv(netdev); 384 385 ring->rx_max_pending = NFP_NET_MAX_RX_DESCS; 386 ring->tx_max_pending = NFP_NET_MAX_TX_DESCS; 387 ring->rx_pending = nn->dp.rxd_cnt; 388 ring->tx_pending = nn->dp.txd_cnt; 389 } 390 391 static int nfp_net_set_ring_size(struct nfp_net *nn, u32 rxd_cnt, u32 txd_cnt) 392 { 393 struct nfp_net_dp *dp; 394 395 dp = nfp_net_clone_dp(nn); 396 if (!dp) 397 return -ENOMEM; 398 399 dp->rxd_cnt = rxd_cnt; 400 dp->txd_cnt = txd_cnt; 401 402 return nfp_net_ring_reconfig(nn, dp, NULL); 403 } 404 405 static int nfp_net_set_ringparam(struct net_device *netdev, 406 struct ethtool_ringparam *ring) 407 { 408 struct nfp_net *nn = netdev_priv(netdev); 409 u32 rxd_cnt, txd_cnt; 410 411 /* We don't have separate queues/rings for small/large frames. */ 412 if (ring->rx_mini_pending || ring->rx_jumbo_pending) 413 return -EINVAL; 414 415 /* Round up to supported values */ 416 rxd_cnt = roundup_pow_of_two(ring->rx_pending); 417 txd_cnt = roundup_pow_of_two(ring->tx_pending); 418 419 if (rxd_cnt < NFP_NET_MIN_RX_DESCS || rxd_cnt > NFP_NET_MAX_RX_DESCS || 420 txd_cnt < NFP_NET_MIN_TX_DESCS || txd_cnt > NFP_NET_MAX_TX_DESCS) 421 return -EINVAL; 422 423 if (nn->dp.rxd_cnt == rxd_cnt && nn->dp.txd_cnt == txd_cnt) 424 return 0; 425 426 nn_dbg(nn, "Change ring size: RxQ %u->%u, TxQ %u->%u\n", 427 nn->dp.rxd_cnt, rxd_cnt, nn->dp.txd_cnt, txd_cnt); 428 429 return nfp_net_set_ring_size(nn, rxd_cnt, txd_cnt); 430 } 431 432 static unsigned int nfp_vnic_get_sw_stats_count(struct net_device *netdev) 433 { 434 struct nfp_net *nn = netdev_priv(netdev); 435 436 return NN_RVEC_GATHER_STATS + nn->max_r_vecs * NN_RVEC_PER_Q_STATS + 437 NN_CTRL_PATH_STATS; 438 } 439 440 static u8 *nfp_vnic_get_sw_stats_strings(struct net_device *netdev, u8 *data) 441 { 442 struct nfp_net *nn = netdev_priv(netdev); 443 int i; 444 445 for (i = 0; i < nn->max_r_vecs; i++) { 446 ethtool_sprintf(&data, "rvec_%u_rx_pkts", i); 447 ethtool_sprintf(&data, "rvec_%u_tx_pkts", i); 448 ethtool_sprintf(&data, "rvec_%u_tx_busy", i); 449 } 450 451 ethtool_sprintf(&data, "hw_rx_csum_ok"); 452 ethtool_sprintf(&data, "hw_rx_csum_inner_ok"); 453 ethtool_sprintf(&data, "hw_rx_csum_complete"); 454 ethtool_sprintf(&data, "hw_rx_csum_err"); 455 ethtool_sprintf(&data, "rx_replace_buf_alloc_fail"); 456 ethtool_sprintf(&data, "rx_tls_decrypted_packets"); 457 ethtool_sprintf(&data, "hw_tx_csum"); 458 ethtool_sprintf(&data, "hw_tx_inner_csum"); 459 ethtool_sprintf(&data, "tx_gather"); 460 ethtool_sprintf(&data, "tx_lso"); 461 ethtool_sprintf(&data, "tx_tls_encrypted_packets"); 462 ethtool_sprintf(&data, "tx_tls_ooo"); 463 ethtool_sprintf(&data, "tx_tls_drop_no_sync_data"); 464 465 ethtool_sprintf(&data, "hw_tls_no_space"); 466 ethtool_sprintf(&data, "rx_tls_resync_req_ok"); 467 ethtool_sprintf(&data, "rx_tls_resync_req_ign"); 468 ethtool_sprintf(&data, "rx_tls_resync_sent"); 469 470 return data; 471 } 472 473 static u64 *nfp_vnic_get_sw_stats(struct net_device *netdev, u64 *data) 474 { 475 u64 gathered_stats[NN_RVEC_GATHER_STATS] = {}; 476 struct nfp_net *nn = netdev_priv(netdev); 477 u64 tmp[NN_RVEC_GATHER_STATS]; 478 unsigned int i, j; 479 480 for (i = 0; i < nn->max_r_vecs; i++) { 481 unsigned int start; 482 483 do { 484 start = u64_stats_fetch_begin(&nn->r_vecs[i].rx_sync); 485 data[0] = nn->r_vecs[i].rx_pkts; 486 tmp[0] = nn->r_vecs[i].hw_csum_rx_ok; 487 tmp[1] = nn->r_vecs[i].hw_csum_rx_inner_ok; 488 tmp[2] = nn->r_vecs[i].hw_csum_rx_complete; 489 tmp[3] = nn->r_vecs[i].hw_csum_rx_error; 490 tmp[4] = nn->r_vecs[i].rx_replace_buf_alloc_fail; 491 tmp[5] = nn->r_vecs[i].hw_tls_rx; 492 } while (u64_stats_fetch_retry(&nn->r_vecs[i].rx_sync, start)); 493 494 do { 495 start = u64_stats_fetch_begin(&nn->r_vecs[i].tx_sync); 496 data[1] = nn->r_vecs[i].tx_pkts; 497 data[2] = nn->r_vecs[i].tx_busy; 498 tmp[6] = nn->r_vecs[i].hw_csum_tx; 499 tmp[7] = nn->r_vecs[i].hw_csum_tx_inner; 500 tmp[8] = nn->r_vecs[i].tx_gather; 501 tmp[9] = nn->r_vecs[i].tx_lso; 502 tmp[10] = nn->r_vecs[i].hw_tls_tx; 503 tmp[11] = nn->r_vecs[i].tls_tx_fallback; 504 tmp[12] = nn->r_vecs[i].tls_tx_no_fallback; 505 } while (u64_stats_fetch_retry(&nn->r_vecs[i].tx_sync, start)); 506 507 data += NN_RVEC_PER_Q_STATS; 508 509 for (j = 0; j < NN_RVEC_GATHER_STATS; j++) 510 gathered_stats[j] += tmp[j]; 511 } 512 513 for (j = 0; j < NN_RVEC_GATHER_STATS; j++) 514 *data++ = gathered_stats[j]; 515 516 *data++ = atomic_read(&nn->ktls_no_space); 517 *data++ = atomic_read(&nn->ktls_rx_resync_req); 518 *data++ = atomic_read(&nn->ktls_rx_resync_ign); 519 *data++ = atomic_read(&nn->ktls_rx_resync_sent); 520 521 return data; 522 } 523 524 static unsigned int nfp_vnic_get_hw_stats_count(unsigned int num_vecs) 525 { 526 return NN_ET_GLOBAL_STATS_LEN + num_vecs * 4; 527 } 528 529 static u8 * 530 nfp_vnic_get_hw_stats_strings(u8 *data, unsigned int num_vecs, bool repr) 531 { 532 int swap_off, i; 533 534 BUILD_BUG_ON(NN_ET_GLOBAL_STATS_LEN < NN_ET_SWITCH_STATS_LEN * 2); 535 /* If repr is true first add SWITCH_STATS_LEN and then subtract it 536 * effectively swapping the RX and TX statistics (giving us the RX 537 * and TX from perspective of the switch). 538 */ 539 swap_off = repr * NN_ET_SWITCH_STATS_LEN; 540 541 for (i = 0; i < NN_ET_SWITCH_STATS_LEN; i++) 542 ethtool_sprintf(&data, nfp_net_et_stats[i + swap_off].name); 543 544 for (i = NN_ET_SWITCH_STATS_LEN; i < NN_ET_SWITCH_STATS_LEN * 2; i++) 545 ethtool_sprintf(&data, nfp_net_et_stats[i - swap_off].name); 546 547 for (i = NN_ET_SWITCH_STATS_LEN * 2; i < NN_ET_GLOBAL_STATS_LEN; i++) 548 ethtool_sprintf(&data, nfp_net_et_stats[i].name); 549 550 for (i = 0; i < num_vecs; i++) { 551 ethtool_sprintf(&data, "rxq_%u_pkts", i); 552 ethtool_sprintf(&data, "rxq_%u_bytes", i); 553 ethtool_sprintf(&data, "txq_%u_pkts", i); 554 ethtool_sprintf(&data, "txq_%u_bytes", i); 555 } 556 557 return data; 558 } 559 560 static u64 * 561 nfp_vnic_get_hw_stats(u64 *data, u8 __iomem *mem, unsigned int num_vecs) 562 { 563 unsigned int i; 564 565 for (i = 0; i < NN_ET_GLOBAL_STATS_LEN; i++) 566 *data++ = readq(mem + nfp_net_et_stats[i].off); 567 568 for (i = 0; i < num_vecs; i++) { 569 *data++ = readq(mem + NFP_NET_CFG_RXR_STATS(i)); 570 *data++ = readq(mem + NFP_NET_CFG_RXR_STATS(i) + 8); 571 *data++ = readq(mem + NFP_NET_CFG_TXR_STATS(i)); 572 *data++ = readq(mem + NFP_NET_CFG_TXR_STATS(i) + 8); 573 } 574 575 return data; 576 } 577 578 static unsigned int nfp_vnic_get_tlv_stats_count(struct nfp_net *nn) 579 { 580 return nn->tlv_caps.vnic_stats_cnt + nn->max_r_vecs * 4; 581 } 582 583 static u8 *nfp_vnic_get_tlv_stats_strings(struct nfp_net *nn, u8 *data) 584 { 585 unsigned int i, id; 586 u8 __iomem *mem; 587 u64 id_word = 0; 588 589 mem = nn->dp.ctrl_bar + nn->tlv_caps.vnic_stats_off; 590 for (i = 0; i < nn->tlv_caps.vnic_stats_cnt; i++) { 591 if (!(i % 4)) 592 id_word = readq(mem + i * 2); 593 594 id = (u16)id_word; 595 id_word >>= 16; 596 597 if (id < ARRAY_SIZE(nfp_tlv_stat_names) && 598 nfp_tlv_stat_names[id][0]) { 599 memcpy(data, nfp_tlv_stat_names[id], ETH_GSTRING_LEN); 600 data += ETH_GSTRING_LEN; 601 } else { 602 ethtool_sprintf(&data, "dev_unknown_stat%u", id); 603 } 604 } 605 606 for (i = 0; i < nn->max_r_vecs; i++) { 607 ethtool_sprintf(&data, "rxq_%u_pkts", i); 608 ethtool_sprintf(&data, "rxq_%u_bytes", i); 609 ethtool_sprintf(&data, "txq_%u_pkts", i); 610 ethtool_sprintf(&data, "txq_%u_bytes", i); 611 } 612 613 return data; 614 } 615 616 static u64 *nfp_vnic_get_tlv_stats(struct nfp_net *nn, u64 *data) 617 { 618 u8 __iomem *mem; 619 unsigned int i; 620 621 mem = nn->dp.ctrl_bar + nn->tlv_caps.vnic_stats_off; 622 mem += roundup(2 * nn->tlv_caps.vnic_stats_cnt, 8); 623 for (i = 0; i < nn->tlv_caps.vnic_stats_cnt; i++) 624 *data++ = readq(mem + i * 8); 625 626 mem = nn->dp.ctrl_bar; 627 for (i = 0; i < nn->max_r_vecs; i++) { 628 *data++ = readq(mem + NFP_NET_CFG_RXR_STATS(i)); 629 *data++ = readq(mem + NFP_NET_CFG_RXR_STATS(i) + 8); 630 *data++ = readq(mem + NFP_NET_CFG_TXR_STATS(i)); 631 *data++ = readq(mem + NFP_NET_CFG_TXR_STATS(i) + 8); 632 } 633 634 return data; 635 } 636 637 static unsigned int nfp_mac_get_stats_count(struct net_device *netdev) 638 { 639 struct nfp_port *port; 640 641 port = nfp_port_from_netdev(netdev); 642 if (!__nfp_port_get_eth_port(port) || !port->eth_stats) 643 return 0; 644 645 return ARRAY_SIZE(nfp_mac_et_stats); 646 } 647 648 static u8 *nfp_mac_get_stats_strings(struct net_device *netdev, u8 *data) 649 { 650 struct nfp_port *port; 651 unsigned int i; 652 653 port = nfp_port_from_netdev(netdev); 654 if (!__nfp_port_get_eth_port(port) || !port->eth_stats) 655 return data; 656 657 for (i = 0; i < ARRAY_SIZE(nfp_mac_et_stats); i++) 658 ethtool_sprintf(&data, "mac.%s", nfp_mac_et_stats[i].name); 659 660 return data; 661 } 662 663 static u64 *nfp_mac_get_stats(struct net_device *netdev, u64 *data) 664 { 665 struct nfp_port *port; 666 unsigned int i; 667 668 port = nfp_port_from_netdev(netdev); 669 if (!__nfp_port_get_eth_port(port) || !port->eth_stats) 670 return data; 671 672 for (i = 0; i < ARRAY_SIZE(nfp_mac_et_stats); i++) 673 *data++ = readq(port->eth_stats + nfp_mac_et_stats[i].off); 674 675 return data; 676 } 677 678 static void nfp_net_get_strings(struct net_device *netdev, 679 u32 stringset, u8 *data) 680 { 681 struct nfp_net *nn = netdev_priv(netdev); 682 683 switch (stringset) { 684 case ETH_SS_STATS: 685 data = nfp_vnic_get_sw_stats_strings(netdev, data); 686 if (!nn->tlv_caps.vnic_stats_off) 687 data = nfp_vnic_get_hw_stats_strings(data, 688 nn->max_r_vecs, 689 false); 690 else 691 data = nfp_vnic_get_tlv_stats_strings(nn, data); 692 data = nfp_mac_get_stats_strings(netdev, data); 693 data = nfp_app_port_get_stats_strings(nn->port, data); 694 break; 695 } 696 } 697 698 static void 699 nfp_net_get_stats(struct net_device *netdev, struct ethtool_stats *stats, 700 u64 *data) 701 { 702 struct nfp_net *nn = netdev_priv(netdev); 703 704 data = nfp_vnic_get_sw_stats(netdev, data); 705 if (!nn->tlv_caps.vnic_stats_off) 706 data = nfp_vnic_get_hw_stats(data, nn->dp.ctrl_bar, 707 nn->max_r_vecs); 708 else 709 data = nfp_vnic_get_tlv_stats(nn, data); 710 data = nfp_mac_get_stats(netdev, data); 711 data = nfp_app_port_get_stats(nn->port, data); 712 } 713 714 static int nfp_net_get_sset_count(struct net_device *netdev, int sset) 715 { 716 struct nfp_net *nn = netdev_priv(netdev); 717 unsigned int cnt; 718 719 switch (sset) { 720 case ETH_SS_STATS: 721 cnt = nfp_vnic_get_sw_stats_count(netdev); 722 if (!nn->tlv_caps.vnic_stats_off) 723 cnt += nfp_vnic_get_hw_stats_count(nn->max_r_vecs); 724 else 725 cnt += nfp_vnic_get_tlv_stats_count(nn); 726 cnt += nfp_mac_get_stats_count(netdev); 727 cnt += nfp_app_port_get_stats_count(nn->port); 728 return cnt; 729 default: 730 return -EOPNOTSUPP; 731 } 732 } 733 734 static void nfp_port_get_strings(struct net_device *netdev, 735 u32 stringset, u8 *data) 736 { 737 struct nfp_port *port = nfp_port_from_netdev(netdev); 738 739 switch (stringset) { 740 case ETH_SS_STATS: 741 if (nfp_port_is_vnic(port)) 742 data = nfp_vnic_get_hw_stats_strings(data, 0, true); 743 else 744 data = nfp_mac_get_stats_strings(netdev, data); 745 data = nfp_app_port_get_stats_strings(port, data); 746 break; 747 } 748 } 749 750 static void 751 nfp_port_get_stats(struct net_device *netdev, struct ethtool_stats *stats, 752 u64 *data) 753 { 754 struct nfp_port *port = nfp_port_from_netdev(netdev); 755 756 if (nfp_port_is_vnic(port)) 757 data = nfp_vnic_get_hw_stats(data, port->vnic, 0); 758 else 759 data = nfp_mac_get_stats(netdev, data); 760 data = nfp_app_port_get_stats(port, data); 761 } 762 763 static int nfp_port_get_sset_count(struct net_device *netdev, int sset) 764 { 765 struct nfp_port *port = nfp_port_from_netdev(netdev); 766 unsigned int count; 767 768 switch (sset) { 769 case ETH_SS_STATS: 770 if (nfp_port_is_vnic(port)) 771 count = nfp_vnic_get_hw_stats_count(0); 772 else 773 count = nfp_mac_get_stats_count(netdev); 774 count += nfp_app_port_get_stats_count(port); 775 return count; 776 default: 777 return -EOPNOTSUPP; 778 } 779 } 780 781 static int nfp_port_fec_ethtool_to_nsp(u32 fec) 782 { 783 switch (fec) { 784 case ETHTOOL_FEC_AUTO: 785 return NFP_FEC_AUTO_BIT; 786 case ETHTOOL_FEC_OFF: 787 return NFP_FEC_DISABLED_BIT; 788 case ETHTOOL_FEC_RS: 789 return NFP_FEC_REED_SOLOMON_BIT; 790 case ETHTOOL_FEC_BASER: 791 return NFP_FEC_BASER_BIT; 792 default: 793 /* NSP only supports a single mode at a time */ 794 return -EOPNOTSUPP; 795 } 796 } 797 798 static u32 nfp_port_fec_nsp_to_ethtool(u32 fec) 799 { 800 u32 result = 0; 801 802 if (fec & NFP_FEC_AUTO) 803 result |= ETHTOOL_FEC_AUTO; 804 if (fec & NFP_FEC_BASER) 805 result |= ETHTOOL_FEC_BASER; 806 if (fec & NFP_FEC_REED_SOLOMON) 807 result |= ETHTOOL_FEC_RS; 808 if (fec & NFP_FEC_DISABLED) 809 result |= ETHTOOL_FEC_OFF; 810 811 return result ?: ETHTOOL_FEC_NONE; 812 } 813 814 static int 815 nfp_port_get_fecparam(struct net_device *netdev, 816 struct ethtool_fecparam *param) 817 { 818 struct nfp_eth_table_port *eth_port; 819 struct nfp_port *port; 820 821 param->active_fec = ETHTOOL_FEC_NONE; 822 param->fec = ETHTOOL_FEC_NONE; 823 824 port = nfp_port_from_netdev(netdev); 825 eth_port = nfp_port_get_eth_port(port); 826 if (!eth_port) 827 return -EOPNOTSUPP; 828 829 if (!nfp_eth_can_support_fec(eth_port)) 830 return 0; 831 832 param->fec = nfp_port_fec_nsp_to_ethtool(eth_port->fec_modes_supported); 833 param->active_fec = nfp_port_fec_nsp_to_ethtool(eth_port->fec); 834 835 return 0; 836 } 837 838 static int 839 nfp_port_set_fecparam(struct net_device *netdev, 840 struct ethtool_fecparam *param) 841 { 842 struct nfp_eth_table_port *eth_port; 843 struct nfp_port *port; 844 int err, fec; 845 846 port = nfp_port_from_netdev(netdev); 847 eth_port = nfp_port_get_eth_port(port); 848 if (!eth_port) 849 return -EOPNOTSUPP; 850 851 if (!nfp_eth_can_support_fec(eth_port)) 852 return -EOPNOTSUPP; 853 854 fec = nfp_port_fec_ethtool_to_nsp(param->fec); 855 if (fec < 0) 856 return fec; 857 858 err = nfp_eth_set_fec(port->app->cpp, eth_port->index, fec); 859 if (!err) 860 /* Only refresh if we did something */ 861 nfp_net_refresh_port_table(port); 862 863 return err < 0 ? err : 0; 864 } 865 866 /* RX network flow classification (RSS, filters, etc) 867 */ 868 static u32 ethtool_flow_to_nfp_flag(u32 flow_type) 869 { 870 static const u32 xlate_ethtool_to_nfp[IPV6_FLOW + 1] = { 871 [TCP_V4_FLOW] = NFP_NET_CFG_RSS_IPV4_TCP, 872 [TCP_V6_FLOW] = NFP_NET_CFG_RSS_IPV6_TCP, 873 [UDP_V4_FLOW] = NFP_NET_CFG_RSS_IPV4_UDP, 874 [UDP_V6_FLOW] = NFP_NET_CFG_RSS_IPV6_UDP, 875 [IPV4_FLOW] = NFP_NET_CFG_RSS_IPV4, 876 [IPV6_FLOW] = NFP_NET_CFG_RSS_IPV6, 877 }; 878 879 if (flow_type >= ARRAY_SIZE(xlate_ethtool_to_nfp)) 880 return 0; 881 882 return xlate_ethtool_to_nfp[flow_type]; 883 } 884 885 static int nfp_net_get_rss_hash_opts(struct nfp_net *nn, 886 struct ethtool_rxnfc *cmd) 887 { 888 u32 nfp_rss_flag; 889 890 cmd->data = 0; 891 892 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY)) 893 return -EOPNOTSUPP; 894 895 nfp_rss_flag = ethtool_flow_to_nfp_flag(cmd->flow_type); 896 if (!nfp_rss_flag) 897 return -EINVAL; 898 899 cmd->data |= RXH_IP_SRC | RXH_IP_DST; 900 if (nn->rss_cfg & nfp_rss_flag) 901 cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3; 902 903 return 0; 904 } 905 906 static int nfp_net_get_rxnfc(struct net_device *netdev, 907 struct ethtool_rxnfc *cmd, u32 *rule_locs) 908 { 909 struct nfp_net *nn = netdev_priv(netdev); 910 911 switch (cmd->cmd) { 912 case ETHTOOL_GRXRINGS: 913 cmd->data = nn->dp.num_rx_rings; 914 return 0; 915 case ETHTOOL_GRXFH: 916 return nfp_net_get_rss_hash_opts(nn, cmd); 917 default: 918 return -EOPNOTSUPP; 919 } 920 } 921 922 static int nfp_net_set_rss_hash_opt(struct nfp_net *nn, 923 struct ethtool_rxnfc *nfc) 924 { 925 u32 new_rss_cfg = nn->rss_cfg; 926 u32 nfp_rss_flag; 927 int err; 928 929 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY)) 930 return -EOPNOTSUPP; 931 932 /* RSS only supports IP SA/DA and L4 src/dst ports */ 933 if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST | 934 RXH_L4_B_0_1 | RXH_L4_B_2_3)) 935 return -EINVAL; 936 937 /* We need at least the IP SA/DA fields for hashing */ 938 if (!(nfc->data & RXH_IP_SRC) || 939 !(nfc->data & RXH_IP_DST)) 940 return -EINVAL; 941 942 nfp_rss_flag = ethtool_flow_to_nfp_flag(nfc->flow_type); 943 if (!nfp_rss_flag) 944 return -EINVAL; 945 946 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) { 947 case 0: 948 new_rss_cfg &= ~nfp_rss_flag; 949 break; 950 case (RXH_L4_B_0_1 | RXH_L4_B_2_3): 951 new_rss_cfg |= nfp_rss_flag; 952 break; 953 default: 954 return -EINVAL; 955 } 956 957 new_rss_cfg |= FIELD_PREP(NFP_NET_CFG_RSS_HFUNC, nn->rss_hfunc); 958 new_rss_cfg |= NFP_NET_CFG_RSS_MASK; 959 960 if (new_rss_cfg == nn->rss_cfg) 961 return 0; 962 963 writel(new_rss_cfg, nn->dp.ctrl_bar + NFP_NET_CFG_RSS_CTRL); 964 err = nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_RSS); 965 if (err) 966 return err; 967 968 nn->rss_cfg = new_rss_cfg; 969 970 nn_dbg(nn, "Changed RSS config to 0x%x\n", nn->rss_cfg); 971 return 0; 972 } 973 974 static int nfp_net_set_rxnfc(struct net_device *netdev, 975 struct ethtool_rxnfc *cmd) 976 { 977 struct nfp_net *nn = netdev_priv(netdev); 978 979 switch (cmd->cmd) { 980 case ETHTOOL_SRXFH: 981 return nfp_net_set_rss_hash_opt(nn, cmd); 982 default: 983 return -EOPNOTSUPP; 984 } 985 } 986 987 static u32 nfp_net_get_rxfh_indir_size(struct net_device *netdev) 988 { 989 struct nfp_net *nn = netdev_priv(netdev); 990 991 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY)) 992 return 0; 993 994 return ARRAY_SIZE(nn->rss_itbl); 995 } 996 997 static u32 nfp_net_get_rxfh_key_size(struct net_device *netdev) 998 { 999 struct nfp_net *nn = netdev_priv(netdev); 1000 1001 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY)) 1002 return -EOPNOTSUPP; 1003 1004 return nfp_net_rss_key_sz(nn); 1005 } 1006 1007 static int nfp_net_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key, 1008 u8 *hfunc) 1009 { 1010 struct nfp_net *nn = netdev_priv(netdev); 1011 int i; 1012 1013 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY)) 1014 return -EOPNOTSUPP; 1015 1016 if (indir) 1017 for (i = 0; i < ARRAY_SIZE(nn->rss_itbl); i++) 1018 indir[i] = nn->rss_itbl[i]; 1019 if (key) 1020 memcpy(key, nn->rss_key, nfp_net_rss_key_sz(nn)); 1021 if (hfunc) { 1022 *hfunc = nn->rss_hfunc; 1023 if (*hfunc >= 1 << ETH_RSS_HASH_FUNCS_COUNT) 1024 *hfunc = ETH_RSS_HASH_UNKNOWN; 1025 } 1026 1027 return 0; 1028 } 1029 1030 static int nfp_net_set_rxfh(struct net_device *netdev, 1031 const u32 *indir, const u8 *key, 1032 const u8 hfunc) 1033 { 1034 struct nfp_net *nn = netdev_priv(netdev); 1035 int i; 1036 1037 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY) || 1038 !(hfunc == ETH_RSS_HASH_NO_CHANGE || hfunc == nn->rss_hfunc)) 1039 return -EOPNOTSUPP; 1040 1041 if (!key && !indir) 1042 return 0; 1043 1044 if (key) { 1045 memcpy(nn->rss_key, key, nfp_net_rss_key_sz(nn)); 1046 nfp_net_rss_write_key(nn); 1047 } 1048 if (indir) { 1049 for (i = 0; i < ARRAY_SIZE(nn->rss_itbl); i++) 1050 nn->rss_itbl[i] = indir[i]; 1051 1052 nfp_net_rss_write_itbl(nn); 1053 } 1054 1055 return nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_RSS); 1056 } 1057 1058 /* Dump BAR registers 1059 */ 1060 static int nfp_net_get_regs_len(struct net_device *netdev) 1061 { 1062 return NFP_NET_CFG_BAR_SZ; 1063 } 1064 1065 static void nfp_net_get_regs(struct net_device *netdev, 1066 struct ethtool_regs *regs, void *p) 1067 { 1068 struct nfp_net *nn = netdev_priv(netdev); 1069 u32 *regs_buf = p; 1070 int i; 1071 1072 regs->version = nn_readl(nn, NFP_NET_CFG_VERSION); 1073 1074 for (i = 0; i < NFP_NET_CFG_BAR_SZ / sizeof(u32); i++) 1075 regs_buf[i] = readl(nn->dp.ctrl_bar + (i * sizeof(u32))); 1076 } 1077 1078 static int nfp_net_get_coalesce(struct net_device *netdev, 1079 struct ethtool_coalesce *ec) 1080 { 1081 struct nfp_net *nn = netdev_priv(netdev); 1082 1083 if (!(nn->cap & NFP_NET_CFG_CTRL_IRQMOD)) 1084 return -EINVAL; 1085 1086 ec->rx_coalesce_usecs = nn->rx_coalesce_usecs; 1087 ec->rx_max_coalesced_frames = nn->rx_coalesce_max_frames; 1088 ec->tx_coalesce_usecs = nn->tx_coalesce_usecs; 1089 ec->tx_max_coalesced_frames = nn->tx_coalesce_max_frames; 1090 1091 return 0; 1092 } 1093 1094 /* Other debug dumps 1095 */ 1096 static int 1097 nfp_dump_nsp_diag(struct nfp_app *app, struct ethtool_dump *dump, void *buffer) 1098 { 1099 struct nfp_resource *res; 1100 int ret; 1101 1102 if (!app) 1103 return -EOPNOTSUPP; 1104 1105 dump->version = 1; 1106 dump->flag = NFP_DUMP_NSP_DIAG; 1107 1108 res = nfp_resource_acquire(app->cpp, NFP_RESOURCE_NSP_DIAG); 1109 if (IS_ERR(res)) 1110 return PTR_ERR(res); 1111 1112 if (buffer) { 1113 if (dump->len != nfp_resource_size(res)) { 1114 ret = -EINVAL; 1115 goto exit_release; 1116 } 1117 1118 ret = nfp_cpp_read(app->cpp, nfp_resource_cpp_id(res), 1119 nfp_resource_address(res), 1120 buffer, dump->len); 1121 if (ret != dump->len) 1122 ret = ret < 0 ? ret : -EIO; 1123 else 1124 ret = 0; 1125 } else { 1126 dump->len = nfp_resource_size(res); 1127 ret = 0; 1128 } 1129 exit_release: 1130 nfp_resource_release(res); 1131 1132 return ret; 1133 } 1134 1135 /* Set the dump flag/level. Calculate the dump length for flag > 0 only (new TLV 1136 * based dumps), since flag 0 (default) calculates the length in 1137 * nfp_app_get_dump_flag(), and we need to support triggering a level 0 dump 1138 * without setting the flag first, for backward compatibility. 1139 */ 1140 static int nfp_app_set_dump(struct net_device *netdev, struct ethtool_dump *val) 1141 { 1142 struct nfp_app *app = nfp_app_from_netdev(netdev); 1143 s64 len; 1144 1145 if (!app) 1146 return -EOPNOTSUPP; 1147 1148 if (val->flag == NFP_DUMP_NSP_DIAG) { 1149 app->pf->dump_flag = val->flag; 1150 return 0; 1151 } 1152 1153 if (!app->pf->dumpspec) 1154 return -EOPNOTSUPP; 1155 1156 len = nfp_net_dump_calculate_size(app->pf, app->pf->dumpspec, 1157 val->flag); 1158 if (len < 0) 1159 return len; 1160 1161 app->pf->dump_flag = val->flag; 1162 app->pf->dump_len = len; 1163 1164 return 0; 1165 } 1166 1167 static int 1168 nfp_app_get_dump_flag(struct net_device *netdev, struct ethtool_dump *dump) 1169 { 1170 struct nfp_app *app = nfp_app_from_netdev(netdev); 1171 1172 if (!app) 1173 return -EOPNOTSUPP; 1174 1175 if (app->pf->dump_flag == NFP_DUMP_NSP_DIAG) 1176 return nfp_dump_nsp_diag(app, dump, NULL); 1177 1178 dump->flag = app->pf->dump_flag; 1179 dump->len = app->pf->dump_len; 1180 1181 return 0; 1182 } 1183 1184 static int 1185 nfp_app_get_dump_data(struct net_device *netdev, struct ethtool_dump *dump, 1186 void *buffer) 1187 { 1188 struct nfp_app *app = nfp_app_from_netdev(netdev); 1189 1190 if (!app) 1191 return -EOPNOTSUPP; 1192 1193 if (app->pf->dump_flag == NFP_DUMP_NSP_DIAG) 1194 return nfp_dump_nsp_diag(app, dump, buffer); 1195 1196 dump->flag = app->pf->dump_flag; 1197 dump->len = app->pf->dump_len; 1198 1199 return nfp_net_dump_populate_buffer(app->pf, app->pf->dumpspec, dump, 1200 buffer); 1201 } 1202 1203 static int 1204 nfp_port_get_module_info(struct net_device *netdev, 1205 struct ethtool_modinfo *modinfo) 1206 { 1207 struct nfp_eth_table_port *eth_port; 1208 struct nfp_port *port; 1209 unsigned int read_len; 1210 struct nfp_nsp *nsp; 1211 int err = 0; 1212 u8 data; 1213 1214 port = nfp_port_from_netdev(netdev); 1215 eth_port = nfp_port_get_eth_port(port); 1216 if (!eth_port) 1217 return -EOPNOTSUPP; 1218 1219 nsp = nfp_nsp_open(port->app->cpp); 1220 if (IS_ERR(nsp)) { 1221 err = PTR_ERR(nsp); 1222 netdev_err(netdev, "Failed to access the NSP: %d\n", err); 1223 return err; 1224 } 1225 1226 if (!nfp_nsp_has_read_module_eeprom(nsp)) { 1227 netdev_info(netdev, "reading module EEPROM not supported. Please update flash\n"); 1228 err = -EOPNOTSUPP; 1229 goto exit_close_nsp; 1230 } 1231 1232 switch (eth_port->interface) { 1233 case NFP_INTERFACE_SFP: 1234 case NFP_INTERFACE_SFP28: 1235 err = nfp_nsp_read_module_eeprom(nsp, eth_port->eth_index, 1236 SFP_SFF8472_COMPLIANCE, &data, 1237 1, &read_len); 1238 if (err < 0) 1239 goto exit_close_nsp; 1240 1241 if (!data) { 1242 modinfo->type = ETH_MODULE_SFF_8079; 1243 modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN; 1244 } else { 1245 modinfo->type = ETH_MODULE_SFF_8472; 1246 modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN; 1247 } 1248 break; 1249 case NFP_INTERFACE_QSFP: 1250 err = nfp_nsp_read_module_eeprom(nsp, eth_port->eth_index, 1251 SFP_SFF_REV_COMPLIANCE, &data, 1252 1, &read_len); 1253 if (err < 0) 1254 goto exit_close_nsp; 1255 1256 if (data < 0x3) { 1257 modinfo->type = ETH_MODULE_SFF_8436; 1258 modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN; 1259 } else { 1260 modinfo->type = ETH_MODULE_SFF_8636; 1261 modinfo->eeprom_len = ETH_MODULE_SFF_8636_LEN; 1262 } 1263 break; 1264 case NFP_INTERFACE_QSFP28: 1265 modinfo->type = ETH_MODULE_SFF_8636; 1266 modinfo->eeprom_len = ETH_MODULE_SFF_8636_LEN; 1267 break; 1268 default: 1269 netdev_err(netdev, "Unsupported module 0x%x detected\n", 1270 eth_port->interface); 1271 err = -EINVAL; 1272 } 1273 1274 exit_close_nsp: 1275 nfp_nsp_close(nsp); 1276 return err; 1277 } 1278 1279 static int 1280 nfp_port_get_module_eeprom(struct net_device *netdev, 1281 struct ethtool_eeprom *eeprom, u8 *data) 1282 { 1283 struct nfp_eth_table_port *eth_port; 1284 struct nfp_port *port; 1285 struct nfp_nsp *nsp; 1286 int err; 1287 1288 port = nfp_port_from_netdev(netdev); 1289 eth_port = __nfp_port_get_eth_port(port); 1290 if (!eth_port) 1291 return -EOPNOTSUPP; 1292 1293 nsp = nfp_nsp_open(port->app->cpp); 1294 if (IS_ERR(nsp)) { 1295 err = PTR_ERR(nsp); 1296 netdev_err(netdev, "Failed to access the NSP: %d\n", err); 1297 return err; 1298 } 1299 1300 if (!nfp_nsp_has_read_module_eeprom(nsp)) { 1301 netdev_info(netdev, "reading module EEPROM not supported. Please update flash\n"); 1302 err = -EOPNOTSUPP; 1303 goto exit_close_nsp; 1304 } 1305 1306 err = nfp_nsp_read_module_eeprom(nsp, eth_port->eth_index, 1307 eeprom->offset, data, eeprom->len, 1308 &eeprom->len); 1309 if (err < 0) { 1310 if (eeprom->len) { 1311 netdev_warn(netdev, 1312 "Incomplete read from module EEPROM: %d\n", 1313 err); 1314 err = 0; 1315 } else { 1316 netdev_err(netdev, 1317 "Reading from module EEPROM failed: %d\n", 1318 err); 1319 } 1320 } 1321 1322 exit_close_nsp: 1323 nfp_nsp_close(nsp); 1324 return err; 1325 } 1326 1327 static int nfp_net_set_coalesce(struct net_device *netdev, 1328 struct ethtool_coalesce *ec) 1329 { 1330 struct nfp_net *nn = netdev_priv(netdev); 1331 unsigned int factor; 1332 1333 /* Compute factor used to convert coalesce '_usecs' parameters to 1334 * ME timestamp ticks. There are 16 ME clock cycles for each timestamp 1335 * count. 1336 */ 1337 factor = nn->me_freq_mhz / 16; 1338 1339 /* Each pair of (usecs, max_frames) fields specifies that interrupts 1340 * should be coalesced until 1341 * (usecs > 0 && time_since_first_completion >= usecs) || 1342 * (max_frames > 0 && completed_frames >= max_frames) 1343 * 1344 * It is illegal to set both usecs and max_frames to zero as this would 1345 * cause interrupts to never be generated. To disable coalescing, set 1346 * usecs = 0 and max_frames = 1. 1347 * 1348 * Some implementations ignore the value of max_frames and use the 1349 * condition time_since_first_completion >= usecs 1350 */ 1351 1352 if (!(nn->cap & NFP_NET_CFG_CTRL_IRQMOD)) 1353 return -EINVAL; 1354 1355 /* ensure valid configuration */ 1356 if (!ec->rx_coalesce_usecs && !ec->rx_max_coalesced_frames) 1357 return -EINVAL; 1358 1359 if (!ec->tx_coalesce_usecs && !ec->tx_max_coalesced_frames) 1360 return -EINVAL; 1361 1362 if (ec->rx_coalesce_usecs * factor >= ((1 << 16) - 1)) 1363 return -EINVAL; 1364 1365 if (ec->tx_coalesce_usecs * factor >= ((1 << 16) - 1)) 1366 return -EINVAL; 1367 1368 if (ec->rx_max_coalesced_frames >= ((1 << 16) - 1)) 1369 return -EINVAL; 1370 1371 if (ec->tx_max_coalesced_frames >= ((1 << 16) - 1)) 1372 return -EINVAL; 1373 1374 /* configuration is valid */ 1375 nn->rx_coalesce_usecs = ec->rx_coalesce_usecs; 1376 nn->rx_coalesce_max_frames = ec->rx_max_coalesced_frames; 1377 nn->tx_coalesce_usecs = ec->tx_coalesce_usecs; 1378 nn->tx_coalesce_max_frames = ec->tx_max_coalesced_frames; 1379 1380 /* write configuration to device */ 1381 nfp_net_coalesce_write_cfg(nn); 1382 return nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_IRQMOD); 1383 } 1384 1385 static void nfp_net_get_channels(struct net_device *netdev, 1386 struct ethtool_channels *channel) 1387 { 1388 struct nfp_net *nn = netdev_priv(netdev); 1389 unsigned int num_tx_rings; 1390 1391 num_tx_rings = nn->dp.num_tx_rings; 1392 if (nn->dp.xdp_prog) 1393 num_tx_rings -= nn->dp.num_rx_rings; 1394 1395 channel->max_rx = min(nn->max_rx_rings, nn->max_r_vecs); 1396 channel->max_tx = min(nn->max_tx_rings, nn->max_r_vecs); 1397 channel->max_combined = min(channel->max_rx, channel->max_tx); 1398 channel->max_other = NFP_NET_NON_Q_VECTORS; 1399 channel->combined_count = min(nn->dp.num_rx_rings, num_tx_rings); 1400 channel->rx_count = nn->dp.num_rx_rings - channel->combined_count; 1401 channel->tx_count = num_tx_rings - channel->combined_count; 1402 channel->other_count = NFP_NET_NON_Q_VECTORS; 1403 } 1404 1405 static int nfp_net_set_num_rings(struct nfp_net *nn, unsigned int total_rx, 1406 unsigned int total_tx) 1407 { 1408 struct nfp_net_dp *dp; 1409 1410 dp = nfp_net_clone_dp(nn); 1411 if (!dp) 1412 return -ENOMEM; 1413 1414 dp->num_rx_rings = total_rx; 1415 dp->num_tx_rings = total_tx; 1416 /* nfp_net_check_config() will catch num_tx_rings > nn->max_tx_rings */ 1417 if (dp->xdp_prog) 1418 dp->num_tx_rings += total_rx; 1419 1420 return nfp_net_ring_reconfig(nn, dp, NULL); 1421 } 1422 1423 static int nfp_net_set_channels(struct net_device *netdev, 1424 struct ethtool_channels *channel) 1425 { 1426 struct nfp_net *nn = netdev_priv(netdev); 1427 unsigned int total_rx, total_tx; 1428 1429 /* Reject unsupported */ 1430 if (channel->other_count != NFP_NET_NON_Q_VECTORS || 1431 (channel->rx_count && channel->tx_count)) 1432 return -EINVAL; 1433 1434 total_rx = channel->combined_count + channel->rx_count; 1435 total_tx = channel->combined_count + channel->tx_count; 1436 1437 if (total_rx > min(nn->max_rx_rings, nn->max_r_vecs) || 1438 total_tx > min(nn->max_tx_rings, nn->max_r_vecs)) 1439 return -EINVAL; 1440 1441 return nfp_net_set_num_rings(nn, total_rx, total_tx); 1442 } 1443 1444 static const struct ethtool_ops nfp_net_ethtool_ops = { 1445 .supported_coalesce_params = ETHTOOL_COALESCE_USECS | 1446 ETHTOOL_COALESCE_MAX_FRAMES, 1447 .get_drvinfo = nfp_net_get_drvinfo, 1448 .get_link = ethtool_op_get_link, 1449 .get_ringparam = nfp_net_get_ringparam, 1450 .set_ringparam = nfp_net_set_ringparam, 1451 .get_strings = nfp_net_get_strings, 1452 .get_ethtool_stats = nfp_net_get_stats, 1453 .get_sset_count = nfp_net_get_sset_count, 1454 .get_rxnfc = nfp_net_get_rxnfc, 1455 .set_rxnfc = nfp_net_set_rxnfc, 1456 .get_rxfh_indir_size = nfp_net_get_rxfh_indir_size, 1457 .get_rxfh_key_size = nfp_net_get_rxfh_key_size, 1458 .get_rxfh = nfp_net_get_rxfh, 1459 .set_rxfh = nfp_net_set_rxfh, 1460 .get_regs_len = nfp_net_get_regs_len, 1461 .get_regs = nfp_net_get_regs, 1462 .set_dump = nfp_app_set_dump, 1463 .get_dump_flag = nfp_app_get_dump_flag, 1464 .get_dump_data = nfp_app_get_dump_data, 1465 .get_module_info = nfp_port_get_module_info, 1466 .get_module_eeprom = nfp_port_get_module_eeprom, 1467 .get_coalesce = nfp_net_get_coalesce, 1468 .set_coalesce = nfp_net_set_coalesce, 1469 .get_channels = nfp_net_get_channels, 1470 .set_channels = nfp_net_set_channels, 1471 .get_link_ksettings = nfp_net_get_link_ksettings, 1472 .set_link_ksettings = nfp_net_set_link_ksettings, 1473 .get_fecparam = nfp_port_get_fecparam, 1474 .set_fecparam = nfp_port_set_fecparam, 1475 }; 1476 1477 const struct ethtool_ops nfp_port_ethtool_ops = { 1478 .get_drvinfo = nfp_app_get_drvinfo, 1479 .get_link = ethtool_op_get_link, 1480 .get_strings = nfp_port_get_strings, 1481 .get_ethtool_stats = nfp_port_get_stats, 1482 .get_sset_count = nfp_port_get_sset_count, 1483 .set_dump = nfp_app_set_dump, 1484 .get_dump_flag = nfp_app_get_dump_flag, 1485 .get_dump_data = nfp_app_get_dump_data, 1486 .get_module_info = nfp_port_get_module_info, 1487 .get_module_eeprom = nfp_port_get_module_eeprom, 1488 .get_link_ksettings = nfp_net_get_link_ksettings, 1489 .set_link_ksettings = nfp_net_set_link_ksettings, 1490 .get_fecparam = nfp_port_get_fecparam, 1491 .set_fecparam = nfp_port_set_fecparam, 1492 }; 1493 1494 void nfp_net_set_ethtool_ops(struct net_device *netdev) 1495 { 1496 netdev->ethtool_ops = &nfp_net_ethtool_ops; 1497 } 1498