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