1 /* 2 * Copyright (C) 2015-2017 Netronome Systems, Inc. 3 * 4 * This software is dual licensed under the GNU General License Version 2, 5 * June 1991 as shown in the file COPYING in the top-level directory of this 6 * source tree or the BSD 2-Clause License provided below. You have the 7 * option to license this software under the complete terms of either license. 8 * 9 * The BSD 2-Clause License: 10 * 11 * Redistribution and use in source and binary forms, with or 12 * without modification, are permitted provided that the following 13 * conditions are met: 14 * 15 * 1. Redistributions of source code must retain the above 16 * copyright notice, this list of conditions and the following 17 * disclaimer. 18 * 19 * 2. Redistributions in binary form must reproduce the above 20 * copyright notice, this list of conditions and the following 21 * disclaimer in the documentation and/or other materials 22 * provided with the distribution. 23 * 24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 31 * SOFTWARE. 32 */ 33 34 /* 35 * nfp_net_ethtool.c 36 * Netronome network device driver: ethtool support 37 * Authors: Jakub Kicinski <jakub.kicinski@netronome.com> 38 * Jason McMullan <jason.mcmullan@netronome.com> 39 * Rolf Neugebauer <rolf.neugebauer@netronome.com> 40 * Brad Petrus <brad.petrus@netronome.com> 41 */ 42 43 #include <linux/bitfield.h> 44 #include <linux/kernel.h> 45 #include <linux/netdevice.h> 46 #include <linux/etherdevice.h> 47 #include <linux/interrupt.h> 48 #include <linux/pci.h> 49 #include <linux/ethtool.h> 50 51 #include "nfpcore/nfp.h" 52 #include "nfpcore/nfp_nsp.h" 53 #include "nfp_app.h" 54 #include "nfp_net_ctrl.h" 55 #include "nfp_net.h" 56 #include "nfp_port.h" 57 58 enum nfp_dump_diag { 59 NFP_DUMP_NSP_DIAG = 0, 60 }; 61 62 struct nfp_et_stat { 63 char name[ETH_GSTRING_LEN]; 64 int off; 65 }; 66 67 static const struct nfp_et_stat nfp_net_et_stats[] = { 68 /* Stats from the device */ 69 { "dev_rx_discards", NFP_NET_CFG_STATS_RX_DISCARDS }, 70 { "dev_rx_errors", NFP_NET_CFG_STATS_RX_ERRORS }, 71 { "dev_rx_bytes", NFP_NET_CFG_STATS_RX_OCTETS }, 72 { "dev_rx_uc_bytes", NFP_NET_CFG_STATS_RX_UC_OCTETS }, 73 { "dev_rx_mc_bytes", NFP_NET_CFG_STATS_RX_MC_OCTETS }, 74 { "dev_rx_bc_bytes", NFP_NET_CFG_STATS_RX_BC_OCTETS }, 75 { "dev_rx_pkts", NFP_NET_CFG_STATS_RX_FRAMES }, 76 { "dev_rx_mc_pkts", NFP_NET_CFG_STATS_RX_MC_FRAMES }, 77 { "dev_rx_bc_pkts", NFP_NET_CFG_STATS_RX_BC_FRAMES }, 78 79 { "dev_tx_discards", NFP_NET_CFG_STATS_TX_DISCARDS }, 80 { "dev_tx_errors", NFP_NET_CFG_STATS_TX_ERRORS }, 81 { "dev_tx_bytes", NFP_NET_CFG_STATS_TX_OCTETS }, 82 { "dev_tx_uc_bytes", NFP_NET_CFG_STATS_TX_UC_OCTETS }, 83 { "dev_tx_mc_bytes", NFP_NET_CFG_STATS_TX_MC_OCTETS }, 84 { "dev_tx_bc_bytes", NFP_NET_CFG_STATS_TX_BC_OCTETS }, 85 { "dev_tx_pkts", NFP_NET_CFG_STATS_TX_FRAMES }, 86 { "dev_tx_mc_pkts", NFP_NET_CFG_STATS_TX_MC_FRAMES }, 87 { "dev_tx_bc_pkts", NFP_NET_CFG_STATS_TX_BC_FRAMES }, 88 89 { "bpf_pass_pkts", NFP_NET_CFG_STATS_APP0_FRAMES }, 90 { "bpf_pass_bytes", NFP_NET_CFG_STATS_APP0_BYTES }, 91 /* see comments in outro functions in nfp_bpf_jit.c to find out 92 * how different BPF modes use app-specific counters 93 */ 94 { "bpf_app1_pkts", NFP_NET_CFG_STATS_APP1_FRAMES }, 95 { "bpf_app1_bytes", NFP_NET_CFG_STATS_APP1_BYTES }, 96 { "bpf_app2_pkts", NFP_NET_CFG_STATS_APP2_FRAMES }, 97 { "bpf_app2_bytes", NFP_NET_CFG_STATS_APP2_BYTES }, 98 { "bpf_app3_pkts", NFP_NET_CFG_STATS_APP3_FRAMES }, 99 { "bpf_app3_bytes", NFP_NET_CFG_STATS_APP3_BYTES }, 100 }; 101 102 static const struct nfp_et_stat nfp_mac_et_stats[] = { 103 { "rx_octets", NFP_MAC_STATS_RX_IN_OCTETS, }, 104 { "rx_frame_too_long_errors", 105 NFP_MAC_STATS_RX_FRAME_TOO_LONG_ERRORS, }, 106 { "rx_range_length_errors", NFP_MAC_STATS_RX_RANGE_LENGTH_ERRORS, }, 107 { "rx_vlan_received_ok", NFP_MAC_STATS_RX_VLAN_RECEIVED_OK, }, 108 { "rx_errors", NFP_MAC_STATS_RX_IN_ERRORS, }, 109 { "rx_broadcast_pkts", NFP_MAC_STATS_RX_IN_BROADCAST_PKTS, }, 110 { "rx_drop_events", NFP_MAC_STATS_RX_DROP_EVENTS, }, 111 { "rx_alignment_errors", NFP_MAC_STATS_RX_ALIGNMENT_ERRORS, }, 112 { "rx_pause_mac_ctrl_frames", 113 NFP_MAC_STATS_RX_PAUSE_MAC_CTRL_FRAMES, }, 114 { "rx_frames_received_ok", NFP_MAC_STATS_RX_FRAMES_RECEIVED_OK, }, 115 { "rx_frame_check_sequence_errors", 116 NFP_MAC_STATS_RX_FRAME_CHECK_SEQUENCE_ERRORS, }, 117 { "rx_unicast_pkts", NFP_MAC_STATS_RX_UNICAST_PKTS, }, 118 { "rx_multicast_pkts", NFP_MAC_STATS_RX_MULTICAST_PKTS, }, 119 { "rx_pkts", NFP_MAC_STATS_RX_PKTS, }, 120 { "rx_undersize_pkts", NFP_MAC_STATS_RX_UNDERSIZE_PKTS, }, 121 { "rx_pkts_64_octets", NFP_MAC_STATS_RX_PKTS_64_OCTETS, }, 122 { "rx_pkts_65_to_127_octets", 123 NFP_MAC_STATS_RX_PKTS_65_TO_127_OCTETS, }, 124 { "rx_pkts_128_to_255_octets", 125 NFP_MAC_STATS_RX_PKTS_128_TO_255_OCTETS, }, 126 { "rx_pkts_256_to_511_octets", 127 NFP_MAC_STATS_RX_PKTS_256_TO_511_OCTETS, }, 128 { "rx_pkts_512_to_1023_octets", 129 NFP_MAC_STATS_RX_PKTS_512_TO_1023_OCTETS, }, 130 { "rx_pkts_1024_to_1518_octets", 131 NFP_MAC_STATS_RX_PKTS_1024_TO_1518_OCTETS, }, 132 { "rx_pkts_1519_to_max_octets", 133 NFP_MAC_STATS_RX_PKTS_1519_TO_MAX_OCTETS, }, 134 { "rx_jabbers", NFP_MAC_STATS_RX_JABBERS, }, 135 { "rx_fragments", NFP_MAC_STATS_RX_FRAGMENTS, }, 136 { "rx_oversize_pkts", NFP_MAC_STATS_RX_OVERSIZE_PKTS, }, 137 { "rx_pause_frames_class0", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS0, }, 138 { "rx_pause_frames_class1", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS1, }, 139 { "rx_pause_frames_class2", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS2, }, 140 { "rx_pause_frames_class3", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS3, }, 141 { "rx_pause_frames_class4", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS4, }, 142 { "rx_pause_frames_class5", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS5, }, 143 { "rx_pause_frames_class6", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS6, }, 144 { "rx_pause_frames_class7", NFP_MAC_STATS_RX_PAUSE_FRAMES_CLASS7, }, 145 { "rx_mac_ctrl_frames_received", 146 NFP_MAC_STATS_RX_MAC_CTRL_FRAMES_RECEIVED, }, 147 { "rx_mac_head_drop", NFP_MAC_STATS_RX_MAC_HEAD_DROP, }, 148 { "tx_queue_drop", NFP_MAC_STATS_TX_QUEUE_DROP, }, 149 { "tx_octets", NFP_MAC_STATS_TX_OUT_OCTETS, }, 150 { "tx_vlan_transmitted_ok", NFP_MAC_STATS_TX_VLAN_TRANSMITTED_OK, }, 151 { "tx_errors", NFP_MAC_STATS_TX_OUT_ERRORS, }, 152 { "tx_broadcast_pkts", NFP_MAC_STATS_TX_BROADCAST_PKTS, }, 153 { "tx_pause_mac_ctrl_frames", 154 NFP_MAC_STATS_TX_PAUSE_MAC_CTRL_FRAMES, }, 155 { "tx_frames_transmitted_ok", 156 NFP_MAC_STATS_TX_FRAMES_TRANSMITTED_OK, }, 157 { "tx_unicast_pkts", NFP_MAC_STATS_TX_UNICAST_PKTS, }, 158 { "tx_multicast_pkts", NFP_MAC_STATS_TX_MULTICAST_PKTS, }, 159 { "tx_pkts_64_octets", NFP_MAC_STATS_TX_PKTS_64_OCTETS, }, 160 { "tx_pkts_65_to_127_octets", 161 NFP_MAC_STATS_TX_PKTS_65_TO_127_OCTETS, }, 162 { "tx_pkts_128_to_255_octets", 163 NFP_MAC_STATS_TX_PKTS_128_TO_255_OCTETS, }, 164 { "tx_pkts_256_to_511_octets", 165 NFP_MAC_STATS_TX_PKTS_256_TO_511_OCTETS, }, 166 { "tx_pkts_512_to_1023_octets", 167 NFP_MAC_STATS_TX_PKTS_512_TO_1023_OCTETS, }, 168 { "tx_pkts_1024_to_1518_octets", 169 NFP_MAC_STATS_TX_PKTS_1024_TO_1518_OCTETS, }, 170 { "tx_pkts_1519_to_max_octets", 171 NFP_MAC_STATS_TX_PKTS_1519_TO_MAX_OCTETS, }, 172 { "tx_pause_frames_class0", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS0, }, 173 { "tx_pause_frames_class1", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS1, }, 174 { "tx_pause_frames_class2", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS2, }, 175 { "tx_pause_frames_class3", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS3, }, 176 { "tx_pause_frames_class4", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS4, }, 177 { "tx_pause_frames_class5", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS5, }, 178 { "tx_pause_frames_class6", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS6, }, 179 { "tx_pause_frames_class7", NFP_MAC_STATS_TX_PAUSE_FRAMES_CLASS7, }, 180 }; 181 182 #define NN_ET_GLOBAL_STATS_LEN ARRAY_SIZE(nfp_net_et_stats) 183 #define NN_ET_SWITCH_STATS_LEN 9 184 #define NN_RVEC_GATHER_STATS 8 185 #define NN_RVEC_PER_Q_STATS 3 186 187 static void nfp_net_get_nspinfo(struct nfp_app *app, char *version) 188 { 189 struct nfp_nsp *nsp; 190 191 if (!app) 192 return; 193 194 nsp = nfp_nsp_open(app->cpp); 195 if (IS_ERR(nsp)) 196 return; 197 198 snprintf(version, ETHTOOL_FWVERS_LEN, "%hu.%hu", 199 nfp_nsp_get_abi_ver_major(nsp), 200 nfp_nsp_get_abi_ver_minor(nsp)); 201 202 nfp_nsp_close(nsp); 203 } 204 205 static void 206 nfp_get_drvinfo(struct nfp_app *app, struct pci_dev *pdev, 207 const char *vnic_version, struct ethtool_drvinfo *drvinfo) 208 { 209 char nsp_version[ETHTOOL_FWVERS_LEN] = {}; 210 211 strlcpy(drvinfo->driver, pdev->driver->name, sizeof(drvinfo->driver)); 212 strlcpy(drvinfo->version, nfp_driver_version, sizeof(drvinfo->version)); 213 214 nfp_net_get_nspinfo(app, nsp_version); 215 snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version), 216 "%s %s %s %s", vnic_version, nsp_version, 217 nfp_app_mip_name(app), nfp_app_name(app)); 218 } 219 220 static void 221 nfp_net_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo) 222 { 223 char vnic_version[ETHTOOL_FWVERS_LEN] = {}; 224 struct nfp_net *nn = netdev_priv(netdev); 225 226 snprintf(vnic_version, sizeof(vnic_version), "%d.%d.%d.%d", 227 nn->fw_ver.resv, nn->fw_ver.class, 228 nn->fw_ver.major, nn->fw_ver.minor); 229 strlcpy(drvinfo->bus_info, pci_name(nn->pdev), 230 sizeof(drvinfo->bus_info)); 231 232 nfp_get_drvinfo(nn->app, nn->pdev, vnic_version, drvinfo); 233 } 234 235 static void 236 nfp_app_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo) 237 { 238 struct nfp_app *app; 239 240 app = nfp_app_from_netdev(netdev); 241 if (!app) 242 return; 243 244 nfp_get_drvinfo(app, app->pdev, "*", drvinfo); 245 } 246 247 static void 248 nfp_net_set_fec_link_mode(struct nfp_eth_table_port *eth_port, 249 struct ethtool_link_ksettings *c) 250 { 251 unsigned int modes; 252 253 ethtool_link_ksettings_add_link_mode(c, supported, FEC_NONE); 254 if (!nfp_eth_can_support_fec(eth_port)) { 255 ethtool_link_ksettings_add_link_mode(c, advertising, FEC_NONE); 256 return; 257 } 258 259 modes = nfp_eth_supported_fec_modes(eth_port); 260 if (modes & NFP_FEC_BASER) { 261 ethtool_link_ksettings_add_link_mode(c, supported, FEC_BASER); 262 ethtool_link_ksettings_add_link_mode(c, advertising, FEC_BASER); 263 } 264 265 if (modes & NFP_FEC_REED_SOLOMON) { 266 ethtool_link_ksettings_add_link_mode(c, supported, FEC_RS); 267 ethtool_link_ksettings_add_link_mode(c, advertising, FEC_RS); 268 } 269 } 270 271 /** 272 * nfp_net_get_link_ksettings - Get Link Speed settings 273 * @netdev: network interface device structure 274 * @cmd: ethtool command 275 * 276 * Reports speed settings based on info in the BAR provided by the fw. 277 */ 278 static int 279 nfp_net_get_link_ksettings(struct net_device *netdev, 280 struct ethtool_link_ksettings *cmd) 281 { 282 static const u32 ls_to_ethtool[] = { 283 [NFP_NET_CFG_STS_LINK_RATE_UNSUPPORTED] = 0, 284 [NFP_NET_CFG_STS_LINK_RATE_UNKNOWN] = SPEED_UNKNOWN, 285 [NFP_NET_CFG_STS_LINK_RATE_1G] = SPEED_1000, 286 [NFP_NET_CFG_STS_LINK_RATE_10G] = SPEED_10000, 287 [NFP_NET_CFG_STS_LINK_RATE_25G] = SPEED_25000, 288 [NFP_NET_CFG_STS_LINK_RATE_40G] = SPEED_40000, 289 [NFP_NET_CFG_STS_LINK_RATE_50G] = SPEED_50000, 290 [NFP_NET_CFG_STS_LINK_RATE_100G] = SPEED_100000, 291 }; 292 struct nfp_eth_table_port *eth_port; 293 struct nfp_port *port; 294 struct nfp_net *nn; 295 u32 sts, ls; 296 297 /* Init to unknowns */ 298 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE); 299 cmd->base.port = PORT_OTHER; 300 cmd->base.speed = SPEED_UNKNOWN; 301 cmd->base.duplex = DUPLEX_UNKNOWN; 302 303 port = nfp_port_from_netdev(netdev); 304 eth_port = nfp_port_get_eth_port(port); 305 if (eth_port) { 306 cmd->base.autoneg = eth_port->aneg != NFP_ANEG_DISABLED ? 307 AUTONEG_ENABLE : AUTONEG_DISABLE; 308 nfp_net_set_fec_link_mode(eth_port, cmd); 309 } 310 311 if (!netif_carrier_ok(netdev)) 312 return 0; 313 314 /* Use link speed from ETH table if available, otherwise try the BAR */ 315 if (eth_port) { 316 cmd->base.port = eth_port->port_type; 317 cmd->base.speed = eth_port->speed; 318 cmd->base.duplex = DUPLEX_FULL; 319 return 0; 320 } 321 322 if (!nfp_netdev_is_nfp_net(netdev)) 323 return -EOPNOTSUPP; 324 nn = netdev_priv(netdev); 325 326 sts = nn_readl(nn, NFP_NET_CFG_STS); 327 328 ls = FIELD_GET(NFP_NET_CFG_STS_LINK_RATE, sts); 329 if (ls == NFP_NET_CFG_STS_LINK_RATE_UNSUPPORTED) 330 return -EOPNOTSUPP; 331 332 if (ls == NFP_NET_CFG_STS_LINK_RATE_UNKNOWN || 333 ls >= ARRAY_SIZE(ls_to_ethtool)) 334 return 0; 335 336 cmd->base.speed = ls_to_ethtool[sts]; 337 cmd->base.duplex = DUPLEX_FULL; 338 339 return 0; 340 } 341 342 static int 343 nfp_net_set_link_ksettings(struct net_device *netdev, 344 const struct ethtool_link_ksettings *cmd) 345 { 346 struct nfp_eth_table_port *eth_port; 347 struct nfp_port *port; 348 struct nfp_nsp *nsp; 349 int err; 350 351 port = nfp_port_from_netdev(netdev); 352 eth_port = __nfp_port_get_eth_port(port); 353 if (!eth_port) 354 return -EOPNOTSUPP; 355 356 if (netif_running(netdev)) { 357 netdev_warn(netdev, "Changing settings not allowed on an active interface. It may cause the port to be disabled until driver reload.\n"); 358 return -EBUSY; 359 } 360 361 nsp = nfp_eth_config_start(port->app->cpp, eth_port->index); 362 if (IS_ERR(nsp)) 363 return PTR_ERR(nsp); 364 365 err = __nfp_eth_set_aneg(nsp, cmd->base.autoneg == AUTONEG_ENABLE ? 366 NFP_ANEG_AUTO : NFP_ANEG_DISABLED); 367 if (err) 368 goto err_bad_set; 369 if (cmd->base.speed != SPEED_UNKNOWN) { 370 u32 speed = cmd->base.speed / eth_port->lanes; 371 372 err = __nfp_eth_set_speed(nsp, speed); 373 if (err) 374 goto err_bad_set; 375 } 376 377 err = nfp_eth_config_commit_end(nsp); 378 if (err > 0) 379 return 0; /* no change */ 380 381 nfp_net_refresh_port_table(port); 382 383 return err; 384 385 err_bad_set: 386 nfp_eth_config_cleanup_end(nsp); 387 return err; 388 } 389 390 static void nfp_net_get_ringparam(struct net_device *netdev, 391 struct ethtool_ringparam *ring) 392 { 393 struct nfp_net *nn = netdev_priv(netdev); 394 395 ring->rx_max_pending = NFP_NET_MAX_RX_DESCS; 396 ring->tx_max_pending = NFP_NET_MAX_TX_DESCS; 397 ring->rx_pending = nn->dp.rxd_cnt; 398 ring->tx_pending = nn->dp.txd_cnt; 399 } 400 401 static int nfp_net_set_ring_size(struct nfp_net *nn, u32 rxd_cnt, u32 txd_cnt) 402 { 403 struct nfp_net_dp *dp; 404 405 dp = nfp_net_clone_dp(nn); 406 if (!dp) 407 return -ENOMEM; 408 409 dp->rxd_cnt = rxd_cnt; 410 dp->txd_cnt = txd_cnt; 411 412 return nfp_net_ring_reconfig(nn, dp, NULL); 413 } 414 415 static int nfp_net_set_ringparam(struct net_device *netdev, 416 struct ethtool_ringparam *ring) 417 { 418 struct nfp_net *nn = netdev_priv(netdev); 419 u32 rxd_cnt, txd_cnt; 420 421 /* We don't have separate queues/rings for small/large frames. */ 422 if (ring->rx_mini_pending || ring->rx_jumbo_pending) 423 return -EINVAL; 424 425 /* Round up to supported values */ 426 rxd_cnt = roundup_pow_of_two(ring->rx_pending); 427 txd_cnt = roundup_pow_of_two(ring->tx_pending); 428 429 if (rxd_cnt < NFP_NET_MIN_RX_DESCS || rxd_cnt > NFP_NET_MAX_RX_DESCS || 430 txd_cnt < NFP_NET_MIN_TX_DESCS || txd_cnt > NFP_NET_MAX_TX_DESCS) 431 return -EINVAL; 432 433 if (nn->dp.rxd_cnt == rxd_cnt && nn->dp.txd_cnt == txd_cnt) 434 return 0; 435 436 nn_dbg(nn, "Change ring size: RxQ %u->%u, TxQ %u->%u\n", 437 nn->dp.rxd_cnt, rxd_cnt, nn->dp.txd_cnt, txd_cnt); 438 439 return nfp_net_set_ring_size(nn, rxd_cnt, txd_cnt); 440 } 441 442 static __printf(2, 3) u8 *nfp_pr_et(u8 *data, const char *fmt, ...) 443 { 444 va_list args; 445 446 va_start(args, fmt); 447 vsnprintf(data, ETH_GSTRING_LEN, fmt, args); 448 va_end(args); 449 450 return data + ETH_GSTRING_LEN; 451 } 452 453 static unsigned int nfp_vnic_get_sw_stats_count(struct net_device *netdev) 454 { 455 struct nfp_net *nn = netdev_priv(netdev); 456 457 return NN_RVEC_GATHER_STATS + nn->dp.num_r_vecs * NN_RVEC_PER_Q_STATS; 458 } 459 460 static u8 *nfp_vnic_get_sw_stats_strings(struct net_device *netdev, u8 *data) 461 { 462 struct nfp_net *nn = netdev_priv(netdev); 463 int i; 464 465 for (i = 0; i < nn->dp.num_r_vecs; i++) { 466 data = nfp_pr_et(data, "rvec_%u_rx_pkts", i); 467 data = nfp_pr_et(data, "rvec_%u_tx_pkts", i); 468 data = nfp_pr_et(data, "rvec_%u_tx_busy", i); 469 } 470 471 data = nfp_pr_et(data, "hw_rx_csum_ok"); 472 data = nfp_pr_et(data, "hw_rx_csum_inner_ok"); 473 data = nfp_pr_et(data, "hw_rx_csum_err"); 474 data = nfp_pr_et(data, "rx_replace_buf_alloc_fail"); 475 data = nfp_pr_et(data, "hw_tx_csum"); 476 data = nfp_pr_et(data, "hw_tx_inner_csum"); 477 data = nfp_pr_et(data, "tx_gather"); 478 data = nfp_pr_et(data, "tx_lso"); 479 480 return data; 481 } 482 483 static u64 *nfp_vnic_get_sw_stats(struct net_device *netdev, u64 *data) 484 { 485 u64 gathered_stats[NN_RVEC_GATHER_STATS] = {}; 486 struct nfp_net *nn = netdev_priv(netdev); 487 u64 tmp[NN_RVEC_GATHER_STATS]; 488 unsigned int i, j; 489 490 for (i = 0; i < nn->dp.num_r_vecs; i++) { 491 unsigned int start; 492 493 do { 494 start = u64_stats_fetch_begin(&nn->r_vecs[i].rx_sync); 495 data[0] = nn->r_vecs[i].rx_pkts; 496 tmp[0] = nn->r_vecs[i].hw_csum_rx_ok; 497 tmp[1] = nn->r_vecs[i].hw_csum_rx_inner_ok; 498 tmp[2] = nn->r_vecs[i].hw_csum_rx_error; 499 tmp[3] = nn->r_vecs[i].rx_replace_buf_alloc_fail; 500 } while (u64_stats_fetch_retry(&nn->r_vecs[i].rx_sync, start)); 501 502 do { 503 start = u64_stats_fetch_begin(&nn->r_vecs[i].tx_sync); 504 data[1] = nn->r_vecs[i].tx_pkts; 505 data[2] = nn->r_vecs[i].tx_busy; 506 tmp[4] = nn->r_vecs[i].hw_csum_tx; 507 tmp[5] = nn->r_vecs[i].hw_csum_tx_inner; 508 tmp[6] = nn->r_vecs[i].tx_gather; 509 tmp[7] = nn->r_vecs[i].tx_lso; 510 } while (u64_stats_fetch_retry(&nn->r_vecs[i].tx_sync, start)); 511 512 data += NN_RVEC_PER_Q_STATS; 513 514 for (j = 0; j < NN_RVEC_GATHER_STATS; j++) 515 gathered_stats[j] += tmp[j]; 516 } 517 518 for (j = 0; j < NN_RVEC_GATHER_STATS; j++) 519 *data++ = gathered_stats[j]; 520 521 return data; 522 } 523 524 static unsigned int 525 nfp_vnic_get_hw_stats_count(unsigned int rx_rings, unsigned int tx_rings) 526 { 527 return NN_ET_GLOBAL_STATS_LEN + (rx_rings + tx_rings) * 2; 528 } 529 530 static u8 * 531 nfp_vnic_get_hw_stats_strings(u8 *data, unsigned int rx_rings, 532 unsigned int tx_rings, bool repr) 533 { 534 int swap_off, i; 535 536 BUILD_BUG_ON(NN_ET_GLOBAL_STATS_LEN < NN_ET_SWITCH_STATS_LEN * 2); 537 /* If repr is true first add SWITCH_STATS_LEN and then subtract it 538 * effectively swapping the RX and TX statistics (giving us the RX 539 * and TX from perspective of the switch). 540 */ 541 swap_off = repr * NN_ET_SWITCH_STATS_LEN; 542 543 for (i = 0; i < NN_ET_SWITCH_STATS_LEN; i++) 544 data = nfp_pr_et(data, nfp_net_et_stats[i + swap_off].name); 545 546 for (i = NN_ET_SWITCH_STATS_LEN; i < NN_ET_SWITCH_STATS_LEN * 2; i++) 547 data = nfp_pr_et(data, nfp_net_et_stats[i - swap_off].name); 548 549 for (i = NN_ET_SWITCH_STATS_LEN * 2; i < NN_ET_GLOBAL_STATS_LEN; i++) 550 data = nfp_pr_et(data, nfp_net_et_stats[i].name); 551 552 for (i = 0; i < tx_rings; i++) { 553 data = nfp_pr_et(data, "txq_%u_pkts", i); 554 data = nfp_pr_et(data, "txq_%u_bytes", i); 555 } 556 557 for (i = 0; i < rx_rings; i++) { 558 data = nfp_pr_et(data, "rxq_%u_pkts", i); 559 data = nfp_pr_et(data, "rxq_%u_bytes", i); 560 } 561 562 return data; 563 } 564 565 static u64 * 566 nfp_vnic_get_hw_stats(u64 *data, u8 __iomem *mem, 567 unsigned int rx_rings, unsigned int tx_rings) 568 { 569 unsigned int i; 570 571 for (i = 0; i < NN_ET_GLOBAL_STATS_LEN; i++) 572 *data++ = readq(mem + nfp_net_et_stats[i].off); 573 574 for (i = 0; i < tx_rings; i++) { 575 *data++ = readq(mem + NFP_NET_CFG_TXR_STATS(i)); 576 *data++ = readq(mem + NFP_NET_CFG_TXR_STATS(i) + 8); 577 } 578 579 for (i = 0; i < rx_rings; i++) { 580 *data++ = readq(mem + NFP_NET_CFG_RXR_STATS(i)); 581 *data++ = readq(mem + NFP_NET_CFG_RXR_STATS(i) + 8); 582 } 583 584 return data; 585 } 586 587 static unsigned int nfp_mac_get_stats_count(struct net_device *netdev) 588 { 589 struct nfp_port *port; 590 591 port = nfp_port_from_netdev(netdev); 592 if (!__nfp_port_get_eth_port(port) || !port->eth_stats) 593 return 0; 594 595 return ARRAY_SIZE(nfp_mac_et_stats); 596 } 597 598 static u8 *nfp_mac_get_stats_strings(struct net_device *netdev, u8 *data) 599 { 600 struct nfp_port *port; 601 unsigned int i; 602 603 port = nfp_port_from_netdev(netdev); 604 if (!__nfp_port_get_eth_port(port) || !port->eth_stats) 605 return data; 606 607 for (i = 0; i < ARRAY_SIZE(nfp_mac_et_stats); i++) 608 data = nfp_pr_et(data, "mac.%s", nfp_mac_et_stats[i].name); 609 610 return data; 611 } 612 613 static u64 *nfp_mac_get_stats(struct net_device *netdev, u64 *data) 614 { 615 struct nfp_port *port; 616 unsigned int i; 617 618 port = nfp_port_from_netdev(netdev); 619 if (!__nfp_port_get_eth_port(port) || !port->eth_stats) 620 return data; 621 622 for (i = 0; i < ARRAY_SIZE(nfp_mac_et_stats); i++) 623 *data++ = readq(port->eth_stats + nfp_mac_et_stats[i].off); 624 625 return data; 626 } 627 628 static void nfp_net_get_strings(struct net_device *netdev, 629 u32 stringset, u8 *data) 630 { 631 struct nfp_net *nn = netdev_priv(netdev); 632 633 switch (stringset) { 634 case ETH_SS_STATS: 635 data = nfp_vnic_get_sw_stats_strings(netdev, data); 636 data = nfp_vnic_get_hw_stats_strings(data, nn->dp.num_rx_rings, 637 nn->dp.num_tx_rings, 638 false); 639 data = nfp_mac_get_stats_strings(netdev, data); 640 break; 641 } 642 } 643 644 static void 645 nfp_net_get_stats(struct net_device *netdev, struct ethtool_stats *stats, 646 u64 *data) 647 { 648 struct nfp_net *nn = netdev_priv(netdev); 649 650 data = nfp_vnic_get_sw_stats(netdev, data); 651 data = nfp_vnic_get_hw_stats(data, nn->dp.ctrl_bar, 652 nn->dp.num_rx_rings, nn->dp.num_tx_rings); 653 data = nfp_mac_get_stats(netdev, data); 654 } 655 656 static int nfp_net_get_sset_count(struct net_device *netdev, int sset) 657 { 658 struct nfp_net *nn = netdev_priv(netdev); 659 660 switch (sset) { 661 case ETH_SS_STATS: 662 return nfp_vnic_get_sw_stats_count(netdev) + 663 nfp_vnic_get_hw_stats_count(nn->dp.num_rx_rings, 664 nn->dp.num_tx_rings) + 665 nfp_mac_get_stats_count(netdev); 666 default: 667 return -EOPNOTSUPP; 668 } 669 } 670 671 static void nfp_port_get_strings(struct net_device *netdev, 672 u32 stringset, u8 *data) 673 { 674 struct nfp_port *port = nfp_port_from_netdev(netdev); 675 676 switch (stringset) { 677 case ETH_SS_STATS: 678 if (nfp_port_is_vnic(port)) 679 data = nfp_vnic_get_hw_stats_strings(data, 0, 0, true); 680 else 681 data = nfp_mac_get_stats_strings(netdev, data); 682 break; 683 } 684 } 685 686 static void 687 nfp_port_get_stats(struct net_device *netdev, struct ethtool_stats *stats, 688 u64 *data) 689 { 690 struct nfp_port *port = nfp_port_from_netdev(netdev); 691 692 if (nfp_port_is_vnic(port)) 693 data = nfp_vnic_get_hw_stats(data, port->vnic, 0, 0); 694 else 695 data = nfp_mac_get_stats(netdev, data); 696 } 697 698 static int nfp_port_get_sset_count(struct net_device *netdev, int sset) 699 { 700 struct nfp_port *port = nfp_port_from_netdev(netdev); 701 unsigned int count; 702 703 switch (sset) { 704 case ETH_SS_STATS: 705 if (nfp_port_is_vnic(port)) 706 count = nfp_vnic_get_hw_stats_count(0, 0); 707 else 708 count = nfp_mac_get_stats_count(netdev); 709 return count; 710 default: 711 return -EOPNOTSUPP; 712 } 713 } 714 715 static int nfp_port_fec_ethtool_to_nsp(u32 fec) 716 { 717 switch (fec) { 718 case ETHTOOL_FEC_AUTO: 719 return NFP_FEC_AUTO_BIT; 720 case ETHTOOL_FEC_OFF: 721 return NFP_FEC_DISABLED_BIT; 722 case ETHTOOL_FEC_RS: 723 return NFP_FEC_REED_SOLOMON_BIT; 724 case ETHTOOL_FEC_BASER: 725 return NFP_FEC_BASER_BIT; 726 default: 727 /* NSP only supports a single mode at a time */ 728 return -EOPNOTSUPP; 729 } 730 } 731 732 static u32 nfp_port_fec_nsp_to_ethtool(u32 fec) 733 { 734 u32 result = 0; 735 736 if (fec & NFP_FEC_AUTO) 737 result |= ETHTOOL_FEC_AUTO; 738 if (fec & NFP_FEC_BASER) 739 result |= ETHTOOL_FEC_BASER; 740 if (fec & NFP_FEC_REED_SOLOMON) 741 result |= ETHTOOL_FEC_RS; 742 if (fec & NFP_FEC_DISABLED) 743 result |= ETHTOOL_FEC_OFF; 744 745 return result ?: ETHTOOL_FEC_NONE; 746 } 747 748 static int 749 nfp_port_get_fecparam(struct net_device *netdev, 750 struct ethtool_fecparam *param) 751 { 752 struct nfp_eth_table_port *eth_port; 753 struct nfp_port *port; 754 755 param->active_fec = ETHTOOL_FEC_NONE_BIT; 756 param->fec = ETHTOOL_FEC_NONE_BIT; 757 758 port = nfp_port_from_netdev(netdev); 759 eth_port = nfp_port_get_eth_port(port); 760 if (!eth_port) 761 return -EOPNOTSUPP; 762 763 if (!nfp_eth_can_support_fec(eth_port)) 764 return 0; 765 766 param->fec = nfp_port_fec_nsp_to_ethtool(eth_port->fec_modes_supported); 767 param->active_fec = nfp_port_fec_nsp_to_ethtool(eth_port->fec); 768 769 return 0; 770 } 771 772 static int 773 nfp_port_set_fecparam(struct net_device *netdev, 774 struct ethtool_fecparam *param) 775 { 776 struct nfp_eth_table_port *eth_port; 777 struct nfp_port *port; 778 int err, fec; 779 780 port = nfp_port_from_netdev(netdev); 781 eth_port = nfp_port_get_eth_port(port); 782 if (!eth_port) 783 return -EOPNOTSUPP; 784 785 if (!nfp_eth_can_support_fec(eth_port)) 786 return -EOPNOTSUPP; 787 788 fec = nfp_port_fec_ethtool_to_nsp(param->fec); 789 if (fec < 0) 790 return fec; 791 792 err = nfp_eth_set_fec(port->app->cpp, eth_port->index, fec); 793 if (!err) 794 /* Only refresh if we did something */ 795 nfp_net_refresh_port_table(port); 796 797 return err < 0 ? err : 0; 798 } 799 800 /* RX network flow classification (RSS, filters, etc) 801 */ 802 static u32 ethtool_flow_to_nfp_flag(u32 flow_type) 803 { 804 static const u32 xlate_ethtool_to_nfp[IPV6_FLOW + 1] = { 805 [TCP_V4_FLOW] = NFP_NET_CFG_RSS_IPV4_TCP, 806 [TCP_V6_FLOW] = NFP_NET_CFG_RSS_IPV6_TCP, 807 [UDP_V4_FLOW] = NFP_NET_CFG_RSS_IPV4_UDP, 808 [UDP_V6_FLOW] = NFP_NET_CFG_RSS_IPV6_UDP, 809 [IPV4_FLOW] = NFP_NET_CFG_RSS_IPV4, 810 [IPV6_FLOW] = NFP_NET_CFG_RSS_IPV6, 811 }; 812 813 if (flow_type >= ARRAY_SIZE(xlate_ethtool_to_nfp)) 814 return 0; 815 816 return xlate_ethtool_to_nfp[flow_type]; 817 } 818 819 static int nfp_net_get_rss_hash_opts(struct nfp_net *nn, 820 struct ethtool_rxnfc *cmd) 821 { 822 u32 nfp_rss_flag; 823 824 cmd->data = 0; 825 826 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY)) 827 return -EOPNOTSUPP; 828 829 nfp_rss_flag = ethtool_flow_to_nfp_flag(cmd->flow_type); 830 if (!nfp_rss_flag) 831 return -EINVAL; 832 833 cmd->data |= RXH_IP_SRC | RXH_IP_DST; 834 if (nn->rss_cfg & nfp_rss_flag) 835 cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3; 836 837 return 0; 838 } 839 840 static int nfp_net_get_rxnfc(struct net_device *netdev, 841 struct ethtool_rxnfc *cmd, u32 *rule_locs) 842 { 843 struct nfp_net *nn = netdev_priv(netdev); 844 845 switch (cmd->cmd) { 846 case ETHTOOL_GRXRINGS: 847 cmd->data = nn->dp.num_rx_rings; 848 return 0; 849 case ETHTOOL_GRXFH: 850 return nfp_net_get_rss_hash_opts(nn, cmd); 851 default: 852 return -EOPNOTSUPP; 853 } 854 } 855 856 static int nfp_net_set_rss_hash_opt(struct nfp_net *nn, 857 struct ethtool_rxnfc *nfc) 858 { 859 u32 new_rss_cfg = nn->rss_cfg; 860 u32 nfp_rss_flag; 861 int err; 862 863 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY)) 864 return -EOPNOTSUPP; 865 866 /* RSS only supports IP SA/DA and L4 src/dst ports */ 867 if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST | 868 RXH_L4_B_0_1 | RXH_L4_B_2_3)) 869 return -EINVAL; 870 871 /* We need at least the IP SA/DA fields for hashing */ 872 if (!(nfc->data & RXH_IP_SRC) || 873 !(nfc->data & RXH_IP_DST)) 874 return -EINVAL; 875 876 nfp_rss_flag = ethtool_flow_to_nfp_flag(nfc->flow_type); 877 if (!nfp_rss_flag) 878 return -EINVAL; 879 880 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) { 881 case 0: 882 new_rss_cfg &= ~nfp_rss_flag; 883 break; 884 case (RXH_L4_B_0_1 | RXH_L4_B_2_3): 885 new_rss_cfg |= nfp_rss_flag; 886 break; 887 default: 888 return -EINVAL; 889 } 890 891 new_rss_cfg |= FIELD_PREP(NFP_NET_CFG_RSS_HFUNC, nn->rss_hfunc); 892 new_rss_cfg |= NFP_NET_CFG_RSS_MASK; 893 894 if (new_rss_cfg == nn->rss_cfg) 895 return 0; 896 897 writel(new_rss_cfg, nn->dp.ctrl_bar + NFP_NET_CFG_RSS_CTRL); 898 err = nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_RSS); 899 if (err) 900 return err; 901 902 nn->rss_cfg = new_rss_cfg; 903 904 nn_dbg(nn, "Changed RSS config to 0x%x\n", nn->rss_cfg); 905 return 0; 906 } 907 908 static int nfp_net_set_rxnfc(struct net_device *netdev, 909 struct ethtool_rxnfc *cmd) 910 { 911 struct nfp_net *nn = netdev_priv(netdev); 912 913 switch (cmd->cmd) { 914 case ETHTOOL_SRXFH: 915 return nfp_net_set_rss_hash_opt(nn, cmd); 916 default: 917 return -EOPNOTSUPP; 918 } 919 } 920 921 static u32 nfp_net_get_rxfh_indir_size(struct net_device *netdev) 922 { 923 struct nfp_net *nn = netdev_priv(netdev); 924 925 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY)) 926 return 0; 927 928 return ARRAY_SIZE(nn->rss_itbl); 929 } 930 931 static u32 nfp_net_get_rxfh_key_size(struct net_device *netdev) 932 { 933 struct nfp_net *nn = netdev_priv(netdev); 934 935 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY)) 936 return -EOPNOTSUPP; 937 938 return nfp_net_rss_key_sz(nn); 939 } 940 941 static int nfp_net_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key, 942 u8 *hfunc) 943 { 944 struct nfp_net *nn = netdev_priv(netdev); 945 int i; 946 947 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY)) 948 return -EOPNOTSUPP; 949 950 if (indir) 951 for (i = 0; i < ARRAY_SIZE(nn->rss_itbl); i++) 952 indir[i] = nn->rss_itbl[i]; 953 if (key) 954 memcpy(key, nn->rss_key, nfp_net_rss_key_sz(nn)); 955 if (hfunc) { 956 *hfunc = nn->rss_hfunc; 957 if (*hfunc >= 1 << ETH_RSS_HASH_FUNCS_COUNT) 958 *hfunc = ETH_RSS_HASH_UNKNOWN; 959 } 960 961 return 0; 962 } 963 964 static int nfp_net_set_rxfh(struct net_device *netdev, 965 const u32 *indir, const u8 *key, 966 const u8 hfunc) 967 { 968 struct nfp_net *nn = netdev_priv(netdev); 969 int i; 970 971 if (!(nn->cap & NFP_NET_CFG_CTRL_RSS_ANY) || 972 !(hfunc == ETH_RSS_HASH_NO_CHANGE || hfunc == nn->rss_hfunc)) 973 return -EOPNOTSUPP; 974 975 if (!key && !indir) 976 return 0; 977 978 if (key) { 979 memcpy(nn->rss_key, key, nfp_net_rss_key_sz(nn)); 980 nfp_net_rss_write_key(nn); 981 } 982 if (indir) { 983 for (i = 0; i < ARRAY_SIZE(nn->rss_itbl); i++) 984 nn->rss_itbl[i] = indir[i]; 985 986 nfp_net_rss_write_itbl(nn); 987 } 988 989 return nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_RSS); 990 } 991 992 /* Dump BAR registers 993 */ 994 static int nfp_net_get_regs_len(struct net_device *netdev) 995 { 996 return NFP_NET_CFG_BAR_SZ; 997 } 998 999 static void nfp_net_get_regs(struct net_device *netdev, 1000 struct ethtool_regs *regs, void *p) 1001 { 1002 struct nfp_net *nn = netdev_priv(netdev); 1003 u32 *regs_buf = p; 1004 int i; 1005 1006 regs->version = nn_readl(nn, NFP_NET_CFG_VERSION); 1007 1008 for (i = 0; i < NFP_NET_CFG_BAR_SZ / sizeof(u32); i++) 1009 regs_buf[i] = readl(nn->dp.ctrl_bar + (i * sizeof(u32))); 1010 } 1011 1012 static int nfp_net_get_coalesce(struct net_device *netdev, 1013 struct ethtool_coalesce *ec) 1014 { 1015 struct nfp_net *nn = netdev_priv(netdev); 1016 1017 if (!(nn->cap & NFP_NET_CFG_CTRL_IRQMOD)) 1018 return -EINVAL; 1019 1020 ec->rx_coalesce_usecs = nn->rx_coalesce_usecs; 1021 ec->rx_max_coalesced_frames = nn->rx_coalesce_max_frames; 1022 ec->tx_coalesce_usecs = nn->tx_coalesce_usecs; 1023 ec->tx_max_coalesced_frames = nn->tx_coalesce_max_frames; 1024 1025 return 0; 1026 } 1027 1028 /* Other debug dumps 1029 */ 1030 static int 1031 nfp_dump_nsp_diag(struct nfp_app *app, struct ethtool_dump *dump, void *buffer) 1032 { 1033 struct nfp_resource *res; 1034 int ret; 1035 1036 if (!app) 1037 return -EOPNOTSUPP; 1038 1039 dump->version = 1; 1040 dump->flag = NFP_DUMP_NSP_DIAG; 1041 1042 res = nfp_resource_acquire(app->cpp, NFP_RESOURCE_NSP_DIAG); 1043 if (IS_ERR(res)) 1044 return PTR_ERR(res); 1045 1046 if (buffer) { 1047 if (dump->len != nfp_resource_size(res)) { 1048 ret = -EINVAL; 1049 goto exit_release; 1050 } 1051 1052 ret = nfp_cpp_read(app->cpp, nfp_resource_cpp_id(res), 1053 nfp_resource_address(res), 1054 buffer, dump->len); 1055 if (ret != dump->len) 1056 ret = ret < 0 ? ret : -EIO; 1057 else 1058 ret = 0; 1059 } else { 1060 dump->len = nfp_resource_size(res); 1061 ret = 0; 1062 } 1063 exit_release: 1064 nfp_resource_release(res); 1065 1066 return ret; 1067 } 1068 1069 static int nfp_app_set_dump(struct net_device *netdev, struct ethtool_dump *val) 1070 { 1071 struct nfp_app *app = nfp_app_from_netdev(netdev); 1072 1073 if (!app) 1074 return -EOPNOTSUPP; 1075 1076 if (val->flag != NFP_DUMP_NSP_DIAG) 1077 return -EINVAL; 1078 1079 return 0; 1080 } 1081 1082 static int 1083 nfp_app_get_dump_flag(struct net_device *netdev, struct ethtool_dump *dump) 1084 { 1085 return nfp_dump_nsp_diag(nfp_app_from_netdev(netdev), dump, NULL); 1086 } 1087 1088 static int 1089 nfp_app_get_dump_data(struct net_device *netdev, struct ethtool_dump *dump, 1090 void *buffer) 1091 { 1092 return nfp_dump_nsp_diag(nfp_app_from_netdev(netdev), dump, buffer); 1093 } 1094 1095 static int nfp_net_set_coalesce(struct net_device *netdev, 1096 struct ethtool_coalesce *ec) 1097 { 1098 struct nfp_net *nn = netdev_priv(netdev); 1099 unsigned int factor; 1100 1101 if (ec->rx_coalesce_usecs_irq || 1102 ec->rx_max_coalesced_frames_irq || 1103 ec->tx_coalesce_usecs_irq || 1104 ec->tx_max_coalesced_frames_irq || 1105 ec->stats_block_coalesce_usecs || 1106 ec->use_adaptive_rx_coalesce || 1107 ec->use_adaptive_tx_coalesce || 1108 ec->pkt_rate_low || 1109 ec->rx_coalesce_usecs_low || 1110 ec->rx_max_coalesced_frames_low || 1111 ec->tx_coalesce_usecs_low || 1112 ec->tx_max_coalesced_frames_low || 1113 ec->pkt_rate_high || 1114 ec->rx_coalesce_usecs_high || 1115 ec->rx_max_coalesced_frames_high || 1116 ec->tx_coalesce_usecs_high || 1117 ec->tx_max_coalesced_frames_high || 1118 ec->rate_sample_interval) 1119 return -EOPNOTSUPP; 1120 1121 /* Compute factor used to convert coalesce '_usecs' parameters to 1122 * ME timestamp ticks. There are 16 ME clock cycles for each timestamp 1123 * count. 1124 */ 1125 factor = nn->me_freq_mhz / 16; 1126 1127 /* Each pair of (usecs, max_frames) fields specifies that interrupts 1128 * should be coalesced until 1129 * (usecs > 0 && time_since_first_completion >= usecs) || 1130 * (max_frames > 0 && completed_frames >= max_frames) 1131 * 1132 * It is illegal to set both usecs and max_frames to zero as this would 1133 * cause interrupts to never be generated. To disable coalescing, set 1134 * usecs = 0 and max_frames = 1. 1135 * 1136 * Some implementations ignore the value of max_frames and use the 1137 * condition time_since_first_completion >= usecs 1138 */ 1139 1140 if (!(nn->cap & NFP_NET_CFG_CTRL_IRQMOD)) 1141 return -EINVAL; 1142 1143 /* ensure valid configuration */ 1144 if (!ec->rx_coalesce_usecs && !ec->rx_max_coalesced_frames) 1145 return -EINVAL; 1146 1147 if (!ec->tx_coalesce_usecs && !ec->tx_max_coalesced_frames) 1148 return -EINVAL; 1149 1150 if (ec->rx_coalesce_usecs * factor >= ((1 << 16) - 1)) 1151 return -EINVAL; 1152 1153 if (ec->tx_coalesce_usecs * factor >= ((1 << 16) - 1)) 1154 return -EINVAL; 1155 1156 if (ec->rx_max_coalesced_frames >= ((1 << 16) - 1)) 1157 return -EINVAL; 1158 1159 if (ec->tx_max_coalesced_frames >= ((1 << 16) - 1)) 1160 return -EINVAL; 1161 1162 /* configuration is valid */ 1163 nn->rx_coalesce_usecs = ec->rx_coalesce_usecs; 1164 nn->rx_coalesce_max_frames = ec->rx_max_coalesced_frames; 1165 nn->tx_coalesce_usecs = ec->tx_coalesce_usecs; 1166 nn->tx_coalesce_max_frames = ec->tx_max_coalesced_frames; 1167 1168 /* write configuration to device */ 1169 nfp_net_coalesce_write_cfg(nn); 1170 return nfp_net_reconfig(nn, NFP_NET_CFG_UPDATE_IRQMOD); 1171 } 1172 1173 static void nfp_net_get_channels(struct net_device *netdev, 1174 struct ethtool_channels *channel) 1175 { 1176 struct nfp_net *nn = netdev_priv(netdev); 1177 unsigned int num_tx_rings; 1178 1179 num_tx_rings = nn->dp.num_tx_rings; 1180 if (nn->dp.xdp_prog) 1181 num_tx_rings -= nn->dp.num_rx_rings; 1182 1183 channel->max_rx = min(nn->max_rx_rings, nn->max_r_vecs); 1184 channel->max_tx = min(nn->max_tx_rings, nn->max_r_vecs); 1185 channel->max_combined = min(channel->max_rx, channel->max_tx); 1186 channel->max_other = NFP_NET_NON_Q_VECTORS; 1187 channel->combined_count = min(nn->dp.num_rx_rings, num_tx_rings); 1188 channel->rx_count = nn->dp.num_rx_rings - channel->combined_count; 1189 channel->tx_count = num_tx_rings - channel->combined_count; 1190 channel->other_count = NFP_NET_NON_Q_VECTORS; 1191 } 1192 1193 static int nfp_net_set_num_rings(struct nfp_net *nn, unsigned int total_rx, 1194 unsigned int total_tx) 1195 { 1196 struct nfp_net_dp *dp; 1197 1198 dp = nfp_net_clone_dp(nn); 1199 if (!dp) 1200 return -ENOMEM; 1201 1202 dp->num_rx_rings = total_rx; 1203 dp->num_tx_rings = total_tx; 1204 /* nfp_net_check_config() will catch num_tx_rings > nn->max_tx_rings */ 1205 if (dp->xdp_prog) 1206 dp->num_tx_rings += total_rx; 1207 1208 return nfp_net_ring_reconfig(nn, dp, NULL); 1209 } 1210 1211 static int nfp_net_set_channels(struct net_device *netdev, 1212 struct ethtool_channels *channel) 1213 { 1214 struct nfp_net *nn = netdev_priv(netdev); 1215 unsigned int total_rx, total_tx; 1216 1217 /* Reject unsupported */ 1218 if (!channel->combined_count || 1219 channel->other_count != NFP_NET_NON_Q_VECTORS || 1220 (channel->rx_count && channel->tx_count)) 1221 return -EINVAL; 1222 1223 total_rx = channel->combined_count + channel->rx_count; 1224 total_tx = channel->combined_count + channel->tx_count; 1225 1226 if (total_rx > min(nn->max_rx_rings, nn->max_r_vecs) || 1227 total_tx > min(nn->max_tx_rings, nn->max_r_vecs)) 1228 return -EINVAL; 1229 1230 return nfp_net_set_num_rings(nn, total_rx, total_tx); 1231 } 1232 1233 static const struct ethtool_ops nfp_net_ethtool_ops = { 1234 .get_drvinfo = nfp_net_get_drvinfo, 1235 .get_link = ethtool_op_get_link, 1236 .get_ringparam = nfp_net_get_ringparam, 1237 .set_ringparam = nfp_net_set_ringparam, 1238 .get_strings = nfp_net_get_strings, 1239 .get_ethtool_stats = nfp_net_get_stats, 1240 .get_sset_count = nfp_net_get_sset_count, 1241 .get_rxnfc = nfp_net_get_rxnfc, 1242 .set_rxnfc = nfp_net_set_rxnfc, 1243 .get_rxfh_indir_size = nfp_net_get_rxfh_indir_size, 1244 .get_rxfh_key_size = nfp_net_get_rxfh_key_size, 1245 .get_rxfh = nfp_net_get_rxfh, 1246 .set_rxfh = nfp_net_set_rxfh, 1247 .get_regs_len = nfp_net_get_regs_len, 1248 .get_regs = nfp_net_get_regs, 1249 .set_dump = nfp_app_set_dump, 1250 .get_dump_flag = nfp_app_get_dump_flag, 1251 .get_dump_data = nfp_app_get_dump_data, 1252 .get_coalesce = nfp_net_get_coalesce, 1253 .set_coalesce = nfp_net_set_coalesce, 1254 .get_channels = nfp_net_get_channels, 1255 .set_channels = nfp_net_set_channels, 1256 .get_link_ksettings = nfp_net_get_link_ksettings, 1257 .set_link_ksettings = nfp_net_set_link_ksettings, 1258 .get_fecparam = nfp_port_get_fecparam, 1259 .set_fecparam = nfp_port_set_fecparam, 1260 }; 1261 1262 const struct ethtool_ops nfp_port_ethtool_ops = { 1263 .get_drvinfo = nfp_app_get_drvinfo, 1264 .get_link = ethtool_op_get_link, 1265 .get_strings = nfp_port_get_strings, 1266 .get_ethtool_stats = nfp_port_get_stats, 1267 .get_sset_count = nfp_port_get_sset_count, 1268 .set_dump = nfp_app_set_dump, 1269 .get_dump_flag = nfp_app_get_dump_flag, 1270 .get_dump_data = nfp_app_get_dump_data, 1271 .get_link_ksettings = nfp_net_get_link_ksettings, 1272 .set_link_ksettings = nfp_net_set_link_ksettings, 1273 .get_fecparam = nfp_port_get_fecparam, 1274 .set_fecparam = nfp_port_set_fecparam, 1275 }; 1276 1277 void nfp_net_set_ethtool_ops(struct net_device *netdev) 1278 { 1279 netdev->ethtool_ops = &nfp_net_ethtool_ops; 1280 } 1281