1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright(c) 2013 - 2018 Intel Corporation. */ 3 4 /* ethtool support for i40e */ 5 6 #include "i40e.h" 7 #include "i40e_diag.h" 8 #include "i40e_txrx_common.h" 9 10 /* ethtool statistics helpers */ 11 12 /** 13 * struct i40e_stats - definition for an ethtool statistic 14 * @stat_string: statistic name to display in ethtool -S output 15 * @sizeof_stat: the sizeof() the stat, must be no greater than sizeof(u64) 16 * @stat_offset: offsetof() the stat from a base pointer 17 * 18 * This structure defines a statistic to be added to the ethtool stats buffer. 19 * It defines a statistic as offset from a common base pointer. Stats should 20 * be defined in constant arrays using the I40E_STAT macro, with every element 21 * of the array using the same _type for calculating the sizeof_stat and 22 * stat_offset. 23 * 24 * The @sizeof_stat is expected to be sizeof(u8), sizeof(u16), sizeof(u32) or 25 * sizeof(u64). Other sizes are not expected and will produce a WARN_ONCE from 26 * the i40e_add_ethtool_stat() helper function. 27 * 28 * The @stat_string is interpreted as a format string, allowing formatted 29 * values to be inserted while looping over multiple structures for a given 30 * statistics array. Thus, every statistic string in an array should have the 31 * same type and number of format specifiers, to be formatted by variadic 32 * arguments to the i40e_add_stat_string() helper function. 33 **/ 34 struct i40e_stats { 35 char stat_string[ETH_GSTRING_LEN]; 36 int sizeof_stat; 37 int stat_offset; 38 }; 39 40 /* Helper macro to define an i40e_stat structure with proper size and type. 41 * Use this when defining constant statistics arrays. Note that @_type expects 42 * only a type name and is used multiple times. 43 */ 44 #define I40E_STAT(_type, _name, _stat) { \ 45 .stat_string = _name, \ 46 .sizeof_stat = sizeof_field(_type, _stat), \ 47 .stat_offset = offsetof(_type, _stat) \ 48 } 49 50 /* Helper macro for defining some statistics directly copied from the netdev 51 * stats structure. 52 */ 53 #define I40E_NETDEV_STAT(_net_stat) \ 54 I40E_STAT(struct rtnl_link_stats64, #_net_stat, _net_stat) 55 56 /* Helper macro for defining some statistics related to queues */ 57 #define I40E_QUEUE_STAT(_name, _stat) \ 58 I40E_STAT(struct i40e_ring, _name, _stat) 59 60 /* Stats associated with a Tx or Rx ring */ 61 static const struct i40e_stats i40e_gstrings_queue_stats[] = { 62 I40E_QUEUE_STAT("%s-%u.packets", stats.packets), 63 I40E_QUEUE_STAT("%s-%u.bytes", stats.bytes), 64 }; 65 66 /** 67 * i40e_add_one_ethtool_stat - copy the stat into the supplied buffer 68 * @data: location to store the stat value 69 * @pointer: basis for where to copy from 70 * @stat: the stat definition 71 * 72 * Copies the stat data defined by the pointer and stat structure pair into 73 * the memory supplied as data. Used to implement i40e_add_ethtool_stats and 74 * i40e_add_queue_stats. If the pointer is null, data will be zero'd. 75 */ 76 static void 77 i40e_add_one_ethtool_stat(u64 *data, void *pointer, 78 const struct i40e_stats *stat) 79 { 80 char *p; 81 82 if (!pointer) { 83 /* ensure that the ethtool data buffer is zero'd for any stats 84 * which don't have a valid pointer. 85 */ 86 *data = 0; 87 return; 88 } 89 90 p = (char *)pointer + stat->stat_offset; 91 switch (stat->sizeof_stat) { 92 case sizeof(u64): 93 *data = *((u64 *)p); 94 break; 95 case sizeof(u32): 96 *data = *((u32 *)p); 97 break; 98 case sizeof(u16): 99 *data = *((u16 *)p); 100 break; 101 case sizeof(u8): 102 *data = *((u8 *)p); 103 break; 104 default: 105 WARN_ONCE(1, "unexpected stat size for %s", 106 stat->stat_string); 107 *data = 0; 108 } 109 } 110 111 /** 112 * __i40e_add_ethtool_stats - copy stats into the ethtool supplied buffer 113 * @data: ethtool stats buffer 114 * @pointer: location to copy stats from 115 * @stats: array of stats to copy 116 * @size: the size of the stats definition 117 * 118 * Copy the stats defined by the stats array using the pointer as a base into 119 * the data buffer supplied by ethtool. Updates the data pointer to point to 120 * the next empty location for successive calls to __i40e_add_ethtool_stats. 121 * If pointer is null, set the data values to zero and update the pointer to 122 * skip these stats. 123 **/ 124 static void 125 __i40e_add_ethtool_stats(u64 **data, void *pointer, 126 const struct i40e_stats stats[], 127 const unsigned int size) 128 { 129 unsigned int i; 130 131 for (i = 0; i < size; i++) 132 i40e_add_one_ethtool_stat((*data)++, pointer, &stats[i]); 133 } 134 135 /** 136 * i40e_add_ethtool_stats - copy stats into ethtool supplied buffer 137 * @data: ethtool stats buffer 138 * @pointer: location where stats are stored 139 * @stats: static const array of stat definitions 140 * 141 * Macro to ease the use of __i40e_add_ethtool_stats by taking a static 142 * constant stats array and passing the ARRAY_SIZE(). This avoids typos by 143 * ensuring that we pass the size associated with the given stats array. 144 * 145 * The parameter @stats is evaluated twice, so parameters with side effects 146 * should be avoided. 147 **/ 148 #define i40e_add_ethtool_stats(data, pointer, stats) \ 149 __i40e_add_ethtool_stats(data, pointer, stats, ARRAY_SIZE(stats)) 150 151 /** 152 * i40e_add_queue_stats - copy queue statistics into supplied buffer 153 * @data: ethtool stats buffer 154 * @ring: the ring to copy 155 * 156 * Queue statistics must be copied while protected by 157 * u64_stats_fetch_begin_irq, so we can't directly use i40e_add_ethtool_stats. 158 * Assumes that queue stats are defined in i40e_gstrings_queue_stats. If the 159 * ring pointer is null, zero out the queue stat values and update the data 160 * pointer. Otherwise safely copy the stats from the ring into the supplied 161 * buffer and update the data pointer when finished. 162 * 163 * This function expects to be called while under rcu_read_lock(). 164 **/ 165 static void 166 i40e_add_queue_stats(u64 **data, struct i40e_ring *ring) 167 { 168 const unsigned int size = ARRAY_SIZE(i40e_gstrings_queue_stats); 169 const struct i40e_stats *stats = i40e_gstrings_queue_stats; 170 unsigned int start; 171 unsigned int i; 172 173 /* To avoid invalid statistics values, ensure that we keep retrying 174 * the copy until we get a consistent value according to 175 * u64_stats_fetch_retry_irq. But first, make sure our ring is 176 * non-null before attempting to access its syncp. 177 */ 178 do { 179 start = !ring ? 0 : u64_stats_fetch_begin_irq(&ring->syncp); 180 for (i = 0; i < size; i++) { 181 i40e_add_one_ethtool_stat(&(*data)[i], ring, 182 &stats[i]); 183 } 184 } while (ring && u64_stats_fetch_retry_irq(&ring->syncp, start)); 185 186 /* Once we successfully copy the stats in, update the data pointer */ 187 *data += size; 188 } 189 190 /** 191 * __i40e_add_stat_strings - copy stat strings into ethtool buffer 192 * @p: ethtool supplied buffer 193 * @stats: stat definitions array 194 * @size: size of the stats array 195 * 196 * Format and copy the strings described by stats into the buffer pointed at 197 * by p. 198 **/ 199 static void __i40e_add_stat_strings(u8 **p, const struct i40e_stats stats[], 200 const unsigned int size, ...) 201 { 202 unsigned int i; 203 204 for (i = 0; i < size; i++) { 205 va_list args; 206 207 va_start(args, size); 208 vsnprintf(*p, ETH_GSTRING_LEN, stats[i].stat_string, args); 209 *p += ETH_GSTRING_LEN; 210 va_end(args); 211 } 212 } 213 214 /** 215 * 40e_add_stat_strings - copy stat strings into ethtool buffer 216 * @p: ethtool supplied buffer 217 * @stats: stat definitions array 218 * 219 * Format and copy the strings described by the const static stats value into 220 * the buffer pointed at by p. 221 * 222 * The parameter @stats is evaluated twice, so parameters with side effects 223 * should be avoided. Additionally, stats must be an array such that 224 * ARRAY_SIZE can be called on it. 225 **/ 226 #define i40e_add_stat_strings(p, stats, ...) \ 227 __i40e_add_stat_strings(p, stats, ARRAY_SIZE(stats), ## __VA_ARGS__) 228 229 #define I40E_PF_STAT(_name, _stat) \ 230 I40E_STAT(struct i40e_pf, _name, _stat) 231 #define I40E_VSI_STAT(_name, _stat) \ 232 I40E_STAT(struct i40e_vsi, _name, _stat) 233 #define I40E_VEB_STAT(_name, _stat) \ 234 I40E_STAT(struct i40e_veb, _name, _stat) 235 #define I40E_PFC_STAT(_name, _stat) \ 236 I40E_STAT(struct i40e_pfc_stats, _name, _stat) 237 #define I40E_QUEUE_STAT(_name, _stat) \ 238 I40E_STAT(struct i40e_ring, _name, _stat) 239 240 static const struct i40e_stats i40e_gstrings_net_stats[] = { 241 I40E_NETDEV_STAT(rx_packets), 242 I40E_NETDEV_STAT(tx_packets), 243 I40E_NETDEV_STAT(rx_bytes), 244 I40E_NETDEV_STAT(tx_bytes), 245 I40E_NETDEV_STAT(rx_errors), 246 I40E_NETDEV_STAT(tx_errors), 247 I40E_NETDEV_STAT(rx_dropped), 248 I40E_NETDEV_STAT(tx_dropped), 249 I40E_NETDEV_STAT(collisions), 250 I40E_NETDEV_STAT(rx_length_errors), 251 I40E_NETDEV_STAT(rx_crc_errors), 252 }; 253 254 static const struct i40e_stats i40e_gstrings_veb_stats[] = { 255 I40E_VEB_STAT("veb.rx_bytes", stats.rx_bytes), 256 I40E_VEB_STAT("veb.tx_bytes", stats.tx_bytes), 257 I40E_VEB_STAT("veb.rx_unicast", stats.rx_unicast), 258 I40E_VEB_STAT("veb.tx_unicast", stats.tx_unicast), 259 I40E_VEB_STAT("veb.rx_multicast", stats.rx_multicast), 260 I40E_VEB_STAT("veb.tx_multicast", stats.tx_multicast), 261 I40E_VEB_STAT("veb.rx_broadcast", stats.rx_broadcast), 262 I40E_VEB_STAT("veb.tx_broadcast", stats.tx_broadcast), 263 I40E_VEB_STAT("veb.rx_discards", stats.rx_discards), 264 I40E_VEB_STAT("veb.tx_discards", stats.tx_discards), 265 I40E_VEB_STAT("veb.tx_errors", stats.tx_errors), 266 I40E_VEB_STAT("veb.rx_unknown_protocol", stats.rx_unknown_protocol), 267 }; 268 269 static const struct i40e_stats i40e_gstrings_veb_tc_stats[] = { 270 I40E_VEB_STAT("veb.tc_%u_tx_packets", tc_stats.tc_tx_packets), 271 I40E_VEB_STAT("veb.tc_%u_tx_bytes", tc_stats.tc_tx_bytes), 272 I40E_VEB_STAT("veb.tc_%u_rx_packets", tc_stats.tc_rx_packets), 273 I40E_VEB_STAT("veb.tc_%u_rx_bytes", tc_stats.tc_rx_bytes), 274 }; 275 276 static const struct i40e_stats i40e_gstrings_misc_stats[] = { 277 I40E_VSI_STAT("rx_unicast", eth_stats.rx_unicast), 278 I40E_VSI_STAT("tx_unicast", eth_stats.tx_unicast), 279 I40E_VSI_STAT("rx_multicast", eth_stats.rx_multicast), 280 I40E_VSI_STAT("tx_multicast", eth_stats.tx_multicast), 281 I40E_VSI_STAT("rx_broadcast", eth_stats.rx_broadcast), 282 I40E_VSI_STAT("tx_broadcast", eth_stats.tx_broadcast), 283 I40E_VSI_STAT("rx_unknown_protocol", eth_stats.rx_unknown_protocol), 284 I40E_VSI_STAT("tx_linearize", tx_linearize), 285 I40E_VSI_STAT("tx_force_wb", tx_force_wb), 286 I40E_VSI_STAT("tx_busy", tx_busy), 287 I40E_VSI_STAT("rx_alloc_fail", rx_buf_failed), 288 I40E_VSI_STAT("rx_pg_alloc_fail", rx_page_failed), 289 }; 290 291 /* These PF_STATs might look like duplicates of some NETDEV_STATs, 292 * but they are separate. This device supports Virtualization, and 293 * as such might have several netdevs supporting VMDq and FCoE going 294 * through a single port. The NETDEV_STATs are for individual netdevs 295 * seen at the top of the stack, and the PF_STATs are for the physical 296 * function at the bottom of the stack hosting those netdevs. 297 * 298 * The PF_STATs are appended to the netdev stats only when ethtool -S 299 * is queried on the base PF netdev, not on the VMDq or FCoE netdev. 300 */ 301 static const struct i40e_stats i40e_gstrings_stats[] = { 302 I40E_PF_STAT("port.rx_bytes", stats.eth.rx_bytes), 303 I40E_PF_STAT("port.tx_bytes", stats.eth.tx_bytes), 304 I40E_PF_STAT("port.rx_unicast", stats.eth.rx_unicast), 305 I40E_PF_STAT("port.tx_unicast", stats.eth.tx_unicast), 306 I40E_PF_STAT("port.rx_multicast", stats.eth.rx_multicast), 307 I40E_PF_STAT("port.tx_multicast", stats.eth.tx_multicast), 308 I40E_PF_STAT("port.rx_broadcast", stats.eth.rx_broadcast), 309 I40E_PF_STAT("port.tx_broadcast", stats.eth.tx_broadcast), 310 I40E_PF_STAT("port.tx_errors", stats.eth.tx_errors), 311 I40E_PF_STAT("port.rx_dropped", stats.eth.rx_discards), 312 I40E_PF_STAT("port.tx_dropped_link_down", stats.tx_dropped_link_down), 313 I40E_PF_STAT("port.rx_crc_errors", stats.crc_errors), 314 I40E_PF_STAT("port.illegal_bytes", stats.illegal_bytes), 315 I40E_PF_STAT("port.mac_local_faults", stats.mac_local_faults), 316 I40E_PF_STAT("port.mac_remote_faults", stats.mac_remote_faults), 317 I40E_PF_STAT("port.tx_timeout", tx_timeout_count), 318 I40E_PF_STAT("port.rx_csum_bad", hw_csum_rx_error), 319 I40E_PF_STAT("port.rx_length_errors", stats.rx_length_errors), 320 I40E_PF_STAT("port.link_xon_rx", stats.link_xon_rx), 321 I40E_PF_STAT("port.link_xoff_rx", stats.link_xoff_rx), 322 I40E_PF_STAT("port.link_xon_tx", stats.link_xon_tx), 323 I40E_PF_STAT("port.link_xoff_tx", stats.link_xoff_tx), 324 I40E_PF_STAT("port.rx_size_64", stats.rx_size_64), 325 I40E_PF_STAT("port.rx_size_127", stats.rx_size_127), 326 I40E_PF_STAT("port.rx_size_255", stats.rx_size_255), 327 I40E_PF_STAT("port.rx_size_511", stats.rx_size_511), 328 I40E_PF_STAT("port.rx_size_1023", stats.rx_size_1023), 329 I40E_PF_STAT("port.rx_size_1522", stats.rx_size_1522), 330 I40E_PF_STAT("port.rx_size_big", stats.rx_size_big), 331 I40E_PF_STAT("port.tx_size_64", stats.tx_size_64), 332 I40E_PF_STAT("port.tx_size_127", stats.tx_size_127), 333 I40E_PF_STAT("port.tx_size_255", stats.tx_size_255), 334 I40E_PF_STAT("port.tx_size_511", stats.tx_size_511), 335 I40E_PF_STAT("port.tx_size_1023", stats.tx_size_1023), 336 I40E_PF_STAT("port.tx_size_1522", stats.tx_size_1522), 337 I40E_PF_STAT("port.tx_size_big", stats.tx_size_big), 338 I40E_PF_STAT("port.rx_undersize", stats.rx_undersize), 339 I40E_PF_STAT("port.rx_fragments", stats.rx_fragments), 340 I40E_PF_STAT("port.rx_oversize", stats.rx_oversize), 341 I40E_PF_STAT("port.rx_jabber", stats.rx_jabber), 342 I40E_PF_STAT("port.VF_admin_queue_requests", vf_aq_requests), 343 I40E_PF_STAT("port.arq_overflows", arq_overflows), 344 I40E_PF_STAT("port.tx_hwtstamp_timeouts", tx_hwtstamp_timeouts), 345 I40E_PF_STAT("port.rx_hwtstamp_cleared", rx_hwtstamp_cleared), 346 I40E_PF_STAT("port.tx_hwtstamp_skipped", tx_hwtstamp_skipped), 347 I40E_PF_STAT("port.fdir_flush_cnt", fd_flush_cnt), 348 I40E_PF_STAT("port.fdir_atr_match", stats.fd_atr_match), 349 I40E_PF_STAT("port.fdir_atr_tunnel_match", stats.fd_atr_tunnel_match), 350 I40E_PF_STAT("port.fdir_atr_status", stats.fd_atr_status), 351 I40E_PF_STAT("port.fdir_sb_match", stats.fd_sb_match), 352 I40E_PF_STAT("port.fdir_sb_status", stats.fd_sb_status), 353 354 /* LPI stats */ 355 I40E_PF_STAT("port.tx_lpi_status", stats.tx_lpi_status), 356 I40E_PF_STAT("port.rx_lpi_status", stats.rx_lpi_status), 357 I40E_PF_STAT("port.tx_lpi_count", stats.tx_lpi_count), 358 I40E_PF_STAT("port.rx_lpi_count", stats.rx_lpi_count), 359 }; 360 361 struct i40e_pfc_stats { 362 u64 priority_xon_rx; 363 u64 priority_xoff_rx; 364 u64 priority_xon_tx; 365 u64 priority_xoff_tx; 366 u64 priority_xon_2_xoff; 367 }; 368 369 static const struct i40e_stats i40e_gstrings_pfc_stats[] = { 370 I40E_PFC_STAT("port.tx_priority_%u_xon_tx", priority_xon_tx), 371 I40E_PFC_STAT("port.tx_priority_%u_xoff_tx", priority_xoff_tx), 372 I40E_PFC_STAT("port.rx_priority_%u_xon_rx", priority_xon_rx), 373 I40E_PFC_STAT("port.rx_priority_%u_xoff_rx", priority_xoff_rx), 374 I40E_PFC_STAT("port.rx_priority_%u_xon_2_xoff", priority_xon_2_xoff), 375 }; 376 377 #define I40E_NETDEV_STATS_LEN ARRAY_SIZE(i40e_gstrings_net_stats) 378 379 #define I40E_MISC_STATS_LEN ARRAY_SIZE(i40e_gstrings_misc_stats) 380 381 #define I40E_VSI_STATS_LEN (I40E_NETDEV_STATS_LEN + I40E_MISC_STATS_LEN) 382 383 #define I40E_PFC_STATS_LEN (ARRAY_SIZE(i40e_gstrings_pfc_stats) * \ 384 I40E_MAX_USER_PRIORITY) 385 386 #define I40E_VEB_STATS_LEN (ARRAY_SIZE(i40e_gstrings_veb_stats) + \ 387 (ARRAY_SIZE(i40e_gstrings_veb_tc_stats) * \ 388 I40E_MAX_TRAFFIC_CLASS)) 389 390 #define I40E_GLOBAL_STATS_LEN ARRAY_SIZE(i40e_gstrings_stats) 391 392 #define I40E_PF_STATS_LEN (I40E_GLOBAL_STATS_LEN + \ 393 I40E_PFC_STATS_LEN + \ 394 I40E_VEB_STATS_LEN + \ 395 I40E_VSI_STATS_LEN) 396 397 /* Length of stats for a single queue */ 398 #define I40E_QUEUE_STATS_LEN ARRAY_SIZE(i40e_gstrings_queue_stats) 399 400 enum i40e_ethtool_test_id { 401 I40E_ETH_TEST_REG = 0, 402 I40E_ETH_TEST_EEPROM, 403 I40E_ETH_TEST_INTR, 404 I40E_ETH_TEST_LINK, 405 }; 406 407 static const char i40e_gstrings_test[][ETH_GSTRING_LEN] = { 408 "Register test (offline)", 409 "Eeprom test (offline)", 410 "Interrupt test (offline)", 411 "Link test (on/offline)" 412 }; 413 414 #define I40E_TEST_LEN (sizeof(i40e_gstrings_test) / ETH_GSTRING_LEN) 415 416 struct i40e_priv_flags { 417 char flag_string[ETH_GSTRING_LEN]; 418 u64 flag; 419 bool read_only; 420 }; 421 422 #define I40E_PRIV_FLAG(_name, _flag, _read_only) { \ 423 .flag_string = _name, \ 424 .flag = _flag, \ 425 .read_only = _read_only, \ 426 } 427 428 static const struct i40e_priv_flags i40e_gstrings_priv_flags[] = { 429 /* NOTE: MFP setting cannot be changed */ 430 I40E_PRIV_FLAG("MFP", I40E_FLAG_MFP_ENABLED, 1), 431 I40E_PRIV_FLAG("LinkPolling", I40E_FLAG_LINK_POLLING_ENABLED, 0), 432 I40E_PRIV_FLAG("flow-director-atr", I40E_FLAG_FD_ATR_ENABLED, 0), 433 I40E_PRIV_FLAG("veb-stats", I40E_FLAG_VEB_STATS_ENABLED, 0), 434 I40E_PRIV_FLAG("hw-atr-eviction", I40E_FLAG_HW_ATR_EVICT_ENABLED, 0), 435 I40E_PRIV_FLAG("link-down-on-close", 436 I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED, 0), 437 I40E_PRIV_FLAG("legacy-rx", I40E_FLAG_LEGACY_RX, 0), 438 I40E_PRIV_FLAG("disable-source-pruning", 439 I40E_FLAG_SOURCE_PRUNING_DISABLED, 0), 440 I40E_PRIV_FLAG("disable-fw-lldp", I40E_FLAG_DISABLE_FW_LLDP, 0), 441 I40E_PRIV_FLAG("rs-fec", I40E_FLAG_RS_FEC, 0), 442 I40E_PRIV_FLAG("base-r-fec", I40E_FLAG_BASE_R_FEC, 0), 443 }; 444 445 #define I40E_PRIV_FLAGS_STR_LEN ARRAY_SIZE(i40e_gstrings_priv_flags) 446 447 /* Private flags with a global effect, restricted to PF 0 */ 448 static const struct i40e_priv_flags i40e_gl_gstrings_priv_flags[] = { 449 I40E_PRIV_FLAG("vf-true-promisc-support", 450 I40E_FLAG_TRUE_PROMISC_SUPPORT, 0), 451 }; 452 453 #define I40E_GL_PRIV_FLAGS_STR_LEN ARRAY_SIZE(i40e_gl_gstrings_priv_flags) 454 455 /** 456 * i40e_partition_setting_complaint - generic complaint for MFP restriction 457 * @pf: the PF struct 458 **/ 459 static void i40e_partition_setting_complaint(struct i40e_pf *pf) 460 { 461 dev_info(&pf->pdev->dev, 462 "The link settings are allowed to be changed only from the first partition of a given port. Please switch to the first partition in order to change the setting.\n"); 463 } 464 465 /** 466 * i40e_phy_type_to_ethtool - convert the phy_types to ethtool link modes 467 * @pf: PF struct with phy_types 468 * @ks: ethtool link ksettings struct to fill out 469 * 470 **/ 471 static void i40e_phy_type_to_ethtool(struct i40e_pf *pf, 472 struct ethtool_link_ksettings *ks) 473 { 474 struct i40e_link_status *hw_link_info = &pf->hw.phy.link_info; 475 u64 phy_types = pf->hw.phy.phy_types; 476 477 ethtool_link_ksettings_zero_link_mode(ks, supported); 478 ethtool_link_ksettings_zero_link_mode(ks, advertising); 479 480 if (phy_types & I40E_CAP_PHY_TYPE_SGMII) { 481 ethtool_link_ksettings_add_link_mode(ks, supported, 482 1000baseT_Full); 483 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB) 484 ethtool_link_ksettings_add_link_mode(ks, advertising, 485 1000baseT_Full); 486 if (pf->hw_features & I40E_HW_100M_SGMII_CAPABLE) { 487 ethtool_link_ksettings_add_link_mode(ks, supported, 488 100baseT_Full); 489 ethtool_link_ksettings_add_link_mode(ks, advertising, 490 100baseT_Full); 491 } 492 } 493 if (phy_types & I40E_CAP_PHY_TYPE_XAUI || 494 phy_types & I40E_CAP_PHY_TYPE_XFI || 495 phy_types & I40E_CAP_PHY_TYPE_SFI || 496 phy_types & I40E_CAP_PHY_TYPE_10GBASE_SFPP_CU || 497 phy_types & I40E_CAP_PHY_TYPE_10GBASE_AOC) { 498 ethtool_link_ksettings_add_link_mode(ks, supported, 499 10000baseT_Full); 500 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB) 501 ethtool_link_ksettings_add_link_mode(ks, advertising, 502 10000baseT_Full); 503 } 504 if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_T) { 505 ethtool_link_ksettings_add_link_mode(ks, supported, 506 10000baseT_Full); 507 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB) 508 ethtool_link_ksettings_add_link_mode(ks, advertising, 509 10000baseT_Full); 510 } 511 if (phy_types & I40E_CAP_PHY_TYPE_2_5GBASE_T) { 512 ethtool_link_ksettings_add_link_mode(ks, supported, 513 2500baseT_Full); 514 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_2_5GB) 515 ethtool_link_ksettings_add_link_mode(ks, advertising, 516 2500baseT_Full); 517 } 518 if (phy_types & I40E_CAP_PHY_TYPE_5GBASE_T) { 519 ethtool_link_ksettings_add_link_mode(ks, supported, 520 5000baseT_Full); 521 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_5GB) 522 ethtool_link_ksettings_add_link_mode(ks, advertising, 523 5000baseT_Full); 524 } 525 if (phy_types & I40E_CAP_PHY_TYPE_XLAUI || 526 phy_types & I40E_CAP_PHY_TYPE_XLPPI || 527 phy_types & I40E_CAP_PHY_TYPE_40GBASE_AOC) 528 ethtool_link_ksettings_add_link_mode(ks, supported, 529 40000baseCR4_Full); 530 if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4_CU || 531 phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4) { 532 ethtool_link_ksettings_add_link_mode(ks, supported, 533 40000baseCR4_Full); 534 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_40GB) 535 ethtool_link_ksettings_add_link_mode(ks, advertising, 536 40000baseCR4_Full); 537 } 538 if (phy_types & I40E_CAP_PHY_TYPE_100BASE_TX) { 539 ethtool_link_ksettings_add_link_mode(ks, supported, 540 100baseT_Full); 541 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_100MB) 542 ethtool_link_ksettings_add_link_mode(ks, advertising, 543 100baseT_Full); 544 } 545 if (phy_types & I40E_CAP_PHY_TYPE_1000BASE_T) { 546 ethtool_link_ksettings_add_link_mode(ks, supported, 547 1000baseT_Full); 548 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB) 549 ethtool_link_ksettings_add_link_mode(ks, advertising, 550 1000baseT_Full); 551 } 552 if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_SR4) { 553 ethtool_link_ksettings_add_link_mode(ks, supported, 554 40000baseSR4_Full); 555 ethtool_link_ksettings_add_link_mode(ks, advertising, 556 40000baseSR4_Full); 557 } 558 if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_LR4) { 559 ethtool_link_ksettings_add_link_mode(ks, supported, 560 40000baseLR4_Full); 561 ethtool_link_ksettings_add_link_mode(ks, advertising, 562 40000baseLR4_Full); 563 } 564 if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_KR4) { 565 ethtool_link_ksettings_add_link_mode(ks, supported, 566 40000baseKR4_Full); 567 ethtool_link_ksettings_add_link_mode(ks, advertising, 568 40000baseKR4_Full); 569 } 570 if (phy_types & I40E_CAP_PHY_TYPE_20GBASE_KR2) { 571 ethtool_link_ksettings_add_link_mode(ks, supported, 572 20000baseKR2_Full); 573 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_20GB) 574 ethtool_link_ksettings_add_link_mode(ks, advertising, 575 20000baseKR2_Full); 576 } 577 if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_KX4) { 578 ethtool_link_ksettings_add_link_mode(ks, supported, 579 10000baseKX4_Full); 580 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB) 581 ethtool_link_ksettings_add_link_mode(ks, advertising, 582 10000baseKX4_Full); 583 } 584 if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_KR && 585 !(pf->hw_features & I40E_HW_HAVE_CRT_RETIMER)) { 586 ethtool_link_ksettings_add_link_mode(ks, supported, 587 10000baseKR_Full); 588 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB) 589 ethtool_link_ksettings_add_link_mode(ks, advertising, 590 10000baseKR_Full); 591 } 592 if (phy_types & I40E_CAP_PHY_TYPE_1000BASE_KX && 593 !(pf->hw_features & I40E_HW_HAVE_CRT_RETIMER)) { 594 ethtool_link_ksettings_add_link_mode(ks, supported, 595 1000baseKX_Full); 596 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB) 597 ethtool_link_ksettings_add_link_mode(ks, advertising, 598 1000baseKX_Full); 599 } 600 /* need to add 25G PHY types */ 601 if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_KR) { 602 ethtool_link_ksettings_add_link_mode(ks, supported, 603 25000baseKR_Full); 604 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB) 605 ethtool_link_ksettings_add_link_mode(ks, advertising, 606 25000baseKR_Full); 607 } 608 if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_CR) { 609 ethtool_link_ksettings_add_link_mode(ks, supported, 610 25000baseCR_Full); 611 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB) 612 ethtool_link_ksettings_add_link_mode(ks, advertising, 613 25000baseCR_Full); 614 } 615 if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_SR || 616 phy_types & I40E_CAP_PHY_TYPE_25GBASE_LR) { 617 ethtool_link_ksettings_add_link_mode(ks, supported, 618 25000baseSR_Full); 619 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB) 620 ethtool_link_ksettings_add_link_mode(ks, advertising, 621 25000baseSR_Full); 622 } 623 if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_AOC || 624 phy_types & I40E_CAP_PHY_TYPE_25GBASE_ACC) { 625 ethtool_link_ksettings_add_link_mode(ks, supported, 626 25000baseCR_Full); 627 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB) 628 ethtool_link_ksettings_add_link_mode(ks, advertising, 629 25000baseCR_Full); 630 } 631 if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_KR || 632 phy_types & I40E_CAP_PHY_TYPE_25GBASE_CR || 633 phy_types & I40E_CAP_PHY_TYPE_25GBASE_SR || 634 phy_types & I40E_CAP_PHY_TYPE_25GBASE_LR || 635 phy_types & I40E_CAP_PHY_TYPE_25GBASE_AOC || 636 phy_types & I40E_CAP_PHY_TYPE_25GBASE_ACC) { 637 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_NONE); 638 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_RS); 639 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_BASER); 640 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB) { 641 ethtool_link_ksettings_add_link_mode(ks, advertising, 642 FEC_NONE); 643 ethtool_link_ksettings_add_link_mode(ks, advertising, 644 FEC_RS); 645 ethtool_link_ksettings_add_link_mode(ks, advertising, 646 FEC_BASER); 647 } 648 } 649 /* need to add new 10G PHY types */ 650 if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_CR1 || 651 phy_types & I40E_CAP_PHY_TYPE_10GBASE_CR1_CU) { 652 ethtool_link_ksettings_add_link_mode(ks, supported, 653 10000baseCR_Full); 654 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB) 655 ethtool_link_ksettings_add_link_mode(ks, advertising, 656 10000baseCR_Full); 657 } 658 if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_SR) { 659 ethtool_link_ksettings_add_link_mode(ks, supported, 660 10000baseSR_Full); 661 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB) 662 ethtool_link_ksettings_add_link_mode(ks, advertising, 663 10000baseSR_Full); 664 } 665 if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_LR) { 666 ethtool_link_ksettings_add_link_mode(ks, supported, 667 10000baseLR_Full); 668 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB) 669 ethtool_link_ksettings_add_link_mode(ks, advertising, 670 10000baseLR_Full); 671 } 672 if (phy_types & I40E_CAP_PHY_TYPE_1000BASE_SX || 673 phy_types & I40E_CAP_PHY_TYPE_1000BASE_LX || 674 phy_types & I40E_CAP_PHY_TYPE_1000BASE_T_OPTICAL) { 675 ethtool_link_ksettings_add_link_mode(ks, supported, 676 1000baseX_Full); 677 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB) 678 ethtool_link_ksettings_add_link_mode(ks, advertising, 679 1000baseX_Full); 680 } 681 /* Autoneg PHY types */ 682 if (phy_types & I40E_CAP_PHY_TYPE_SGMII || 683 phy_types & I40E_CAP_PHY_TYPE_40GBASE_KR4 || 684 phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4_CU || 685 phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4 || 686 phy_types & I40E_CAP_PHY_TYPE_25GBASE_SR || 687 phy_types & I40E_CAP_PHY_TYPE_25GBASE_LR || 688 phy_types & I40E_CAP_PHY_TYPE_25GBASE_KR || 689 phy_types & I40E_CAP_PHY_TYPE_25GBASE_CR || 690 phy_types & I40E_CAP_PHY_TYPE_20GBASE_KR2 || 691 phy_types & I40E_CAP_PHY_TYPE_10GBASE_SR || 692 phy_types & I40E_CAP_PHY_TYPE_10GBASE_LR || 693 phy_types & I40E_CAP_PHY_TYPE_10GBASE_KX4 || 694 phy_types & I40E_CAP_PHY_TYPE_10GBASE_KR || 695 phy_types & I40E_CAP_PHY_TYPE_10GBASE_CR1_CU || 696 phy_types & I40E_CAP_PHY_TYPE_10GBASE_CR1 || 697 phy_types & I40E_CAP_PHY_TYPE_10GBASE_T || 698 phy_types & I40E_CAP_PHY_TYPE_5GBASE_T || 699 phy_types & I40E_CAP_PHY_TYPE_2_5GBASE_T || 700 phy_types & I40E_CAP_PHY_TYPE_1000BASE_T_OPTICAL || 701 phy_types & I40E_CAP_PHY_TYPE_1000BASE_T || 702 phy_types & I40E_CAP_PHY_TYPE_1000BASE_SX || 703 phy_types & I40E_CAP_PHY_TYPE_1000BASE_LX || 704 phy_types & I40E_CAP_PHY_TYPE_1000BASE_KX || 705 phy_types & I40E_CAP_PHY_TYPE_100BASE_TX) { 706 ethtool_link_ksettings_add_link_mode(ks, supported, 707 Autoneg); 708 ethtool_link_ksettings_add_link_mode(ks, advertising, 709 Autoneg); 710 } 711 } 712 713 /** 714 * i40e_get_settings_link_up_fec - Get the FEC mode encoding from mask 715 * @req_fec_info: mask request FEC info 716 * @ks: ethtool ksettings to fill in 717 **/ 718 static void i40e_get_settings_link_up_fec(u8 req_fec_info, 719 struct ethtool_link_ksettings *ks) 720 { 721 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_NONE); 722 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_RS); 723 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_BASER); 724 725 if ((I40E_AQ_SET_FEC_REQUEST_RS & req_fec_info) && 726 (I40E_AQ_SET_FEC_REQUEST_KR & req_fec_info)) { 727 ethtool_link_ksettings_add_link_mode(ks, advertising, 728 FEC_NONE); 729 ethtool_link_ksettings_add_link_mode(ks, advertising, 730 FEC_BASER); 731 ethtool_link_ksettings_add_link_mode(ks, advertising, FEC_RS); 732 } else if (I40E_AQ_SET_FEC_REQUEST_RS & req_fec_info) { 733 ethtool_link_ksettings_add_link_mode(ks, advertising, FEC_RS); 734 } else if (I40E_AQ_SET_FEC_REQUEST_KR & req_fec_info) { 735 ethtool_link_ksettings_add_link_mode(ks, advertising, 736 FEC_BASER); 737 } else { 738 ethtool_link_ksettings_add_link_mode(ks, advertising, 739 FEC_NONE); 740 } 741 } 742 743 /** 744 * i40e_get_settings_link_up - Get the Link settings for when link is up 745 * @hw: hw structure 746 * @ks: ethtool ksettings to fill in 747 * @netdev: network interface device structure 748 * @pf: pointer to physical function struct 749 **/ 750 static void i40e_get_settings_link_up(struct i40e_hw *hw, 751 struct ethtool_link_ksettings *ks, 752 struct net_device *netdev, 753 struct i40e_pf *pf) 754 { 755 struct i40e_link_status *hw_link_info = &hw->phy.link_info; 756 struct ethtool_link_ksettings cap_ksettings; 757 u32 link_speed = hw_link_info->link_speed; 758 759 /* Initialize supported and advertised settings based on phy settings */ 760 switch (hw_link_info->phy_type) { 761 case I40E_PHY_TYPE_40GBASE_CR4: 762 case I40E_PHY_TYPE_40GBASE_CR4_CU: 763 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg); 764 ethtool_link_ksettings_add_link_mode(ks, supported, 765 40000baseCR4_Full); 766 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg); 767 ethtool_link_ksettings_add_link_mode(ks, advertising, 768 40000baseCR4_Full); 769 break; 770 case I40E_PHY_TYPE_XLAUI: 771 case I40E_PHY_TYPE_XLPPI: 772 case I40E_PHY_TYPE_40GBASE_AOC: 773 ethtool_link_ksettings_add_link_mode(ks, supported, 774 40000baseCR4_Full); 775 ethtool_link_ksettings_add_link_mode(ks, advertising, 776 40000baseCR4_Full); 777 break; 778 case I40E_PHY_TYPE_40GBASE_SR4: 779 ethtool_link_ksettings_add_link_mode(ks, supported, 780 40000baseSR4_Full); 781 ethtool_link_ksettings_add_link_mode(ks, advertising, 782 40000baseSR4_Full); 783 break; 784 case I40E_PHY_TYPE_40GBASE_LR4: 785 ethtool_link_ksettings_add_link_mode(ks, supported, 786 40000baseLR4_Full); 787 ethtool_link_ksettings_add_link_mode(ks, advertising, 788 40000baseLR4_Full); 789 break; 790 case I40E_PHY_TYPE_25GBASE_SR: 791 case I40E_PHY_TYPE_25GBASE_LR: 792 case I40E_PHY_TYPE_10GBASE_SR: 793 case I40E_PHY_TYPE_10GBASE_LR: 794 case I40E_PHY_TYPE_1000BASE_SX: 795 case I40E_PHY_TYPE_1000BASE_LX: 796 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg); 797 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg); 798 ethtool_link_ksettings_add_link_mode(ks, supported, 799 25000baseSR_Full); 800 ethtool_link_ksettings_add_link_mode(ks, advertising, 801 25000baseSR_Full); 802 i40e_get_settings_link_up_fec(hw_link_info->req_fec_info, ks); 803 ethtool_link_ksettings_add_link_mode(ks, supported, 804 10000baseSR_Full); 805 ethtool_link_ksettings_add_link_mode(ks, advertising, 806 10000baseSR_Full); 807 ethtool_link_ksettings_add_link_mode(ks, supported, 808 10000baseLR_Full); 809 ethtool_link_ksettings_add_link_mode(ks, advertising, 810 10000baseLR_Full); 811 ethtool_link_ksettings_add_link_mode(ks, supported, 812 1000baseX_Full); 813 ethtool_link_ksettings_add_link_mode(ks, advertising, 814 1000baseX_Full); 815 ethtool_link_ksettings_add_link_mode(ks, supported, 816 10000baseT_Full); 817 if (hw_link_info->module_type[2] & 818 I40E_MODULE_TYPE_1000BASE_SX || 819 hw_link_info->module_type[2] & 820 I40E_MODULE_TYPE_1000BASE_LX) { 821 ethtool_link_ksettings_add_link_mode(ks, supported, 822 1000baseT_Full); 823 if (hw_link_info->requested_speeds & 824 I40E_LINK_SPEED_1GB) 825 ethtool_link_ksettings_add_link_mode( 826 ks, advertising, 1000baseT_Full); 827 } 828 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB) 829 ethtool_link_ksettings_add_link_mode(ks, advertising, 830 10000baseT_Full); 831 break; 832 case I40E_PHY_TYPE_10GBASE_T: 833 case I40E_PHY_TYPE_5GBASE_T: 834 case I40E_PHY_TYPE_2_5GBASE_T: 835 case I40E_PHY_TYPE_1000BASE_T: 836 case I40E_PHY_TYPE_100BASE_TX: 837 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg); 838 ethtool_link_ksettings_add_link_mode(ks, supported, 839 10000baseT_Full); 840 ethtool_link_ksettings_add_link_mode(ks, supported, 841 5000baseT_Full); 842 ethtool_link_ksettings_add_link_mode(ks, supported, 843 2500baseT_Full); 844 ethtool_link_ksettings_add_link_mode(ks, supported, 845 1000baseT_Full); 846 ethtool_link_ksettings_add_link_mode(ks, supported, 847 100baseT_Full); 848 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg); 849 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB) 850 ethtool_link_ksettings_add_link_mode(ks, advertising, 851 10000baseT_Full); 852 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_5GB) 853 ethtool_link_ksettings_add_link_mode(ks, advertising, 854 5000baseT_Full); 855 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_2_5GB) 856 ethtool_link_ksettings_add_link_mode(ks, advertising, 857 2500baseT_Full); 858 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB) 859 ethtool_link_ksettings_add_link_mode(ks, advertising, 860 1000baseT_Full); 861 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_100MB) 862 ethtool_link_ksettings_add_link_mode(ks, advertising, 863 100baseT_Full); 864 break; 865 case I40E_PHY_TYPE_1000BASE_T_OPTICAL: 866 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg); 867 ethtool_link_ksettings_add_link_mode(ks, supported, 868 1000baseT_Full); 869 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg); 870 ethtool_link_ksettings_add_link_mode(ks, advertising, 871 1000baseT_Full); 872 break; 873 case I40E_PHY_TYPE_10GBASE_CR1_CU: 874 case I40E_PHY_TYPE_10GBASE_CR1: 875 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg); 876 ethtool_link_ksettings_add_link_mode(ks, supported, 877 10000baseT_Full); 878 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg); 879 ethtool_link_ksettings_add_link_mode(ks, advertising, 880 10000baseT_Full); 881 break; 882 case I40E_PHY_TYPE_XAUI: 883 case I40E_PHY_TYPE_XFI: 884 case I40E_PHY_TYPE_SFI: 885 case I40E_PHY_TYPE_10GBASE_SFPP_CU: 886 case I40E_PHY_TYPE_10GBASE_AOC: 887 ethtool_link_ksettings_add_link_mode(ks, supported, 888 10000baseT_Full); 889 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB) 890 ethtool_link_ksettings_add_link_mode(ks, advertising, 891 10000baseT_Full); 892 break; 893 case I40E_PHY_TYPE_SGMII: 894 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg); 895 ethtool_link_ksettings_add_link_mode(ks, supported, 896 1000baseT_Full); 897 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB) 898 ethtool_link_ksettings_add_link_mode(ks, advertising, 899 1000baseT_Full); 900 if (pf->hw_features & I40E_HW_100M_SGMII_CAPABLE) { 901 ethtool_link_ksettings_add_link_mode(ks, supported, 902 100baseT_Full); 903 if (hw_link_info->requested_speeds & 904 I40E_LINK_SPEED_100MB) 905 ethtool_link_ksettings_add_link_mode( 906 ks, advertising, 100baseT_Full); 907 } 908 break; 909 case I40E_PHY_TYPE_40GBASE_KR4: 910 case I40E_PHY_TYPE_25GBASE_KR: 911 case I40E_PHY_TYPE_20GBASE_KR2: 912 case I40E_PHY_TYPE_10GBASE_KR: 913 case I40E_PHY_TYPE_10GBASE_KX4: 914 case I40E_PHY_TYPE_1000BASE_KX: 915 ethtool_link_ksettings_add_link_mode(ks, supported, 916 40000baseKR4_Full); 917 ethtool_link_ksettings_add_link_mode(ks, supported, 918 25000baseKR_Full); 919 ethtool_link_ksettings_add_link_mode(ks, supported, 920 20000baseKR2_Full); 921 ethtool_link_ksettings_add_link_mode(ks, supported, 922 10000baseKR_Full); 923 ethtool_link_ksettings_add_link_mode(ks, supported, 924 10000baseKX4_Full); 925 ethtool_link_ksettings_add_link_mode(ks, supported, 926 1000baseKX_Full); 927 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg); 928 ethtool_link_ksettings_add_link_mode(ks, advertising, 929 40000baseKR4_Full); 930 ethtool_link_ksettings_add_link_mode(ks, advertising, 931 25000baseKR_Full); 932 i40e_get_settings_link_up_fec(hw_link_info->req_fec_info, ks); 933 ethtool_link_ksettings_add_link_mode(ks, advertising, 934 20000baseKR2_Full); 935 ethtool_link_ksettings_add_link_mode(ks, advertising, 936 10000baseKR_Full); 937 ethtool_link_ksettings_add_link_mode(ks, advertising, 938 10000baseKX4_Full); 939 ethtool_link_ksettings_add_link_mode(ks, advertising, 940 1000baseKX_Full); 941 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg); 942 break; 943 case I40E_PHY_TYPE_25GBASE_CR: 944 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg); 945 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg); 946 ethtool_link_ksettings_add_link_mode(ks, supported, 947 25000baseCR_Full); 948 ethtool_link_ksettings_add_link_mode(ks, advertising, 949 25000baseCR_Full); 950 i40e_get_settings_link_up_fec(hw_link_info->req_fec_info, ks); 951 952 break; 953 case I40E_PHY_TYPE_25GBASE_AOC: 954 case I40E_PHY_TYPE_25GBASE_ACC: 955 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg); 956 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg); 957 ethtool_link_ksettings_add_link_mode(ks, supported, 958 25000baseCR_Full); 959 ethtool_link_ksettings_add_link_mode(ks, advertising, 960 25000baseCR_Full); 961 i40e_get_settings_link_up_fec(hw_link_info->req_fec_info, ks); 962 963 ethtool_link_ksettings_add_link_mode(ks, supported, 964 10000baseCR_Full); 965 ethtool_link_ksettings_add_link_mode(ks, advertising, 966 10000baseCR_Full); 967 break; 968 default: 969 /* if we got here and link is up something bad is afoot */ 970 netdev_info(netdev, 971 "WARNING: Link is up but PHY type 0x%x is not recognized.\n", 972 hw_link_info->phy_type); 973 } 974 975 /* Now that we've worked out everything that could be supported by the 976 * current PHY type, get what is supported by the NVM and intersect 977 * them to get what is truly supported 978 */ 979 memset(&cap_ksettings, 0, sizeof(struct ethtool_link_ksettings)); 980 i40e_phy_type_to_ethtool(pf, &cap_ksettings); 981 ethtool_intersect_link_masks(ks, &cap_ksettings); 982 983 /* Set speed and duplex */ 984 switch (link_speed) { 985 case I40E_LINK_SPEED_40GB: 986 ks->base.speed = SPEED_40000; 987 break; 988 case I40E_LINK_SPEED_25GB: 989 ks->base.speed = SPEED_25000; 990 break; 991 case I40E_LINK_SPEED_20GB: 992 ks->base.speed = SPEED_20000; 993 break; 994 case I40E_LINK_SPEED_10GB: 995 ks->base.speed = SPEED_10000; 996 break; 997 case I40E_LINK_SPEED_5GB: 998 ks->base.speed = SPEED_5000; 999 break; 1000 case I40E_LINK_SPEED_2_5GB: 1001 ks->base.speed = SPEED_2500; 1002 break; 1003 case I40E_LINK_SPEED_1GB: 1004 ks->base.speed = SPEED_1000; 1005 break; 1006 case I40E_LINK_SPEED_100MB: 1007 ks->base.speed = SPEED_100; 1008 break; 1009 default: 1010 ks->base.speed = SPEED_UNKNOWN; 1011 break; 1012 } 1013 ks->base.duplex = DUPLEX_FULL; 1014 } 1015 1016 /** 1017 * i40e_get_settings_link_down - Get the Link settings for when link is down 1018 * @hw: hw structure 1019 * @ks: ethtool ksettings to fill in 1020 * @pf: pointer to physical function struct 1021 * 1022 * Reports link settings that can be determined when link is down 1023 **/ 1024 static void i40e_get_settings_link_down(struct i40e_hw *hw, 1025 struct ethtool_link_ksettings *ks, 1026 struct i40e_pf *pf) 1027 { 1028 /* link is down and the driver needs to fall back on 1029 * supported phy types to figure out what info to display 1030 */ 1031 i40e_phy_type_to_ethtool(pf, ks); 1032 1033 /* With no link speed and duplex are unknown */ 1034 ks->base.speed = SPEED_UNKNOWN; 1035 ks->base.duplex = DUPLEX_UNKNOWN; 1036 } 1037 1038 /** 1039 * i40e_get_link_ksettings - Get Link Speed and Duplex settings 1040 * @netdev: network interface device structure 1041 * @ks: ethtool ksettings 1042 * 1043 * Reports speed/duplex settings based on media_type 1044 **/ 1045 static int i40e_get_link_ksettings(struct net_device *netdev, 1046 struct ethtool_link_ksettings *ks) 1047 { 1048 struct i40e_netdev_priv *np = netdev_priv(netdev); 1049 struct i40e_pf *pf = np->vsi->back; 1050 struct i40e_hw *hw = &pf->hw; 1051 struct i40e_link_status *hw_link_info = &hw->phy.link_info; 1052 bool link_up = hw_link_info->link_info & I40E_AQ_LINK_UP; 1053 1054 ethtool_link_ksettings_zero_link_mode(ks, supported); 1055 ethtool_link_ksettings_zero_link_mode(ks, advertising); 1056 1057 if (link_up) 1058 i40e_get_settings_link_up(hw, ks, netdev, pf); 1059 else 1060 i40e_get_settings_link_down(hw, ks, pf); 1061 1062 /* Now set the settings that don't rely on link being up/down */ 1063 /* Set autoneg settings */ 1064 ks->base.autoneg = ((hw_link_info->an_info & I40E_AQ_AN_COMPLETED) ? 1065 AUTONEG_ENABLE : AUTONEG_DISABLE); 1066 1067 /* Set media type settings */ 1068 switch (hw->phy.media_type) { 1069 case I40E_MEDIA_TYPE_BACKPLANE: 1070 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg); 1071 ethtool_link_ksettings_add_link_mode(ks, supported, Backplane); 1072 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg); 1073 ethtool_link_ksettings_add_link_mode(ks, advertising, 1074 Backplane); 1075 ks->base.port = PORT_NONE; 1076 break; 1077 case I40E_MEDIA_TYPE_BASET: 1078 ethtool_link_ksettings_add_link_mode(ks, supported, TP); 1079 ethtool_link_ksettings_add_link_mode(ks, advertising, TP); 1080 ks->base.port = PORT_TP; 1081 break; 1082 case I40E_MEDIA_TYPE_DA: 1083 case I40E_MEDIA_TYPE_CX4: 1084 ethtool_link_ksettings_add_link_mode(ks, supported, FIBRE); 1085 ethtool_link_ksettings_add_link_mode(ks, advertising, FIBRE); 1086 ks->base.port = PORT_DA; 1087 break; 1088 case I40E_MEDIA_TYPE_FIBER: 1089 ethtool_link_ksettings_add_link_mode(ks, supported, FIBRE); 1090 ethtool_link_ksettings_add_link_mode(ks, advertising, FIBRE); 1091 ks->base.port = PORT_FIBRE; 1092 break; 1093 case I40E_MEDIA_TYPE_UNKNOWN: 1094 default: 1095 ks->base.port = PORT_OTHER; 1096 break; 1097 } 1098 1099 /* Set flow control settings */ 1100 ethtool_link_ksettings_add_link_mode(ks, supported, Pause); 1101 1102 switch (hw->fc.requested_mode) { 1103 case I40E_FC_FULL: 1104 ethtool_link_ksettings_add_link_mode(ks, advertising, Pause); 1105 break; 1106 case I40E_FC_TX_PAUSE: 1107 ethtool_link_ksettings_add_link_mode(ks, advertising, 1108 Asym_Pause); 1109 break; 1110 case I40E_FC_RX_PAUSE: 1111 ethtool_link_ksettings_add_link_mode(ks, advertising, Pause); 1112 ethtool_link_ksettings_add_link_mode(ks, advertising, 1113 Asym_Pause); 1114 break; 1115 default: 1116 ethtool_link_ksettings_del_link_mode(ks, advertising, Pause); 1117 ethtool_link_ksettings_del_link_mode(ks, advertising, 1118 Asym_Pause); 1119 break; 1120 } 1121 1122 return 0; 1123 } 1124 1125 /** 1126 * i40e_set_link_ksettings - Set Speed and Duplex 1127 * @netdev: network interface device structure 1128 * @ks: ethtool ksettings 1129 * 1130 * Set speed/duplex per media_types advertised/forced 1131 **/ 1132 static int i40e_set_link_ksettings(struct net_device *netdev, 1133 const struct ethtool_link_ksettings *ks) 1134 { 1135 struct i40e_netdev_priv *np = netdev_priv(netdev); 1136 struct i40e_aq_get_phy_abilities_resp abilities; 1137 struct ethtool_link_ksettings safe_ks; 1138 struct ethtool_link_ksettings copy_ks; 1139 struct i40e_aq_set_phy_config config; 1140 struct i40e_pf *pf = np->vsi->back; 1141 struct i40e_vsi *vsi = np->vsi; 1142 struct i40e_hw *hw = &pf->hw; 1143 bool autoneg_changed = false; 1144 i40e_status status = 0; 1145 int timeout = 50; 1146 int err = 0; 1147 u8 autoneg; 1148 1149 /* Changing port settings is not supported if this isn't the 1150 * port's controlling PF 1151 */ 1152 if (hw->partition_id != 1) { 1153 i40e_partition_setting_complaint(pf); 1154 return -EOPNOTSUPP; 1155 } 1156 if (vsi != pf->vsi[pf->lan_vsi]) 1157 return -EOPNOTSUPP; 1158 if (hw->phy.media_type != I40E_MEDIA_TYPE_BASET && 1159 hw->phy.media_type != I40E_MEDIA_TYPE_FIBER && 1160 hw->phy.media_type != I40E_MEDIA_TYPE_BACKPLANE && 1161 hw->phy.media_type != I40E_MEDIA_TYPE_DA && 1162 hw->phy.link_info.link_info & I40E_AQ_LINK_UP) 1163 return -EOPNOTSUPP; 1164 if (hw->device_id == I40E_DEV_ID_KX_B || 1165 hw->device_id == I40E_DEV_ID_KX_C || 1166 hw->device_id == I40E_DEV_ID_20G_KR2 || 1167 hw->device_id == I40E_DEV_ID_20G_KR2_A || 1168 hw->device_id == I40E_DEV_ID_25G_B || 1169 hw->device_id == I40E_DEV_ID_KX_X722) { 1170 netdev_info(netdev, "Changing settings is not supported on backplane.\n"); 1171 return -EOPNOTSUPP; 1172 } 1173 1174 /* copy the ksettings to copy_ks to avoid modifying the origin */ 1175 memcpy(©_ks, ks, sizeof(struct ethtool_link_ksettings)); 1176 1177 /* save autoneg out of ksettings */ 1178 autoneg = copy_ks.base.autoneg; 1179 1180 /* get our own copy of the bits to check against */ 1181 memset(&safe_ks, 0, sizeof(struct ethtool_link_ksettings)); 1182 safe_ks.base.cmd = copy_ks.base.cmd; 1183 safe_ks.base.link_mode_masks_nwords = 1184 copy_ks.base.link_mode_masks_nwords; 1185 i40e_get_link_ksettings(netdev, &safe_ks); 1186 1187 /* Get link modes supported by hardware and check against modes 1188 * requested by the user. Return an error if unsupported mode was set. 1189 */ 1190 if (!bitmap_subset(copy_ks.link_modes.advertising, 1191 safe_ks.link_modes.supported, 1192 __ETHTOOL_LINK_MODE_MASK_NBITS)) 1193 return -EINVAL; 1194 1195 /* set autoneg back to what it currently is */ 1196 copy_ks.base.autoneg = safe_ks.base.autoneg; 1197 1198 /* If copy_ks.base and safe_ks.base are not the same now, then they are 1199 * trying to set something that we do not support. 1200 */ 1201 if (memcmp(©_ks.base, &safe_ks.base, 1202 sizeof(struct ethtool_link_settings))) 1203 return -EOPNOTSUPP; 1204 1205 while (test_and_set_bit(__I40E_CONFIG_BUSY, pf->state)) { 1206 timeout--; 1207 if (!timeout) 1208 return -EBUSY; 1209 usleep_range(1000, 2000); 1210 } 1211 1212 /* Get the current phy config */ 1213 status = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, 1214 NULL); 1215 if (status) { 1216 err = -EAGAIN; 1217 goto done; 1218 } 1219 1220 /* Copy abilities to config in case autoneg is not 1221 * set below 1222 */ 1223 memset(&config, 0, sizeof(struct i40e_aq_set_phy_config)); 1224 config.abilities = abilities.abilities; 1225 1226 /* Check autoneg */ 1227 if (autoneg == AUTONEG_ENABLE) { 1228 /* If autoneg was not already enabled */ 1229 if (!(hw->phy.link_info.an_info & I40E_AQ_AN_COMPLETED)) { 1230 /* If autoneg is not supported, return error */ 1231 if (!ethtool_link_ksettings_test_link_mode(&safe_ks, 1232 supported, 1233 Autoneg)) { 1234 netdev_info(netdev, "Autoneg not supported on this phy\n"); 1235 err = -EINVAL; 1236 goto done; 1237 } 1238 /* Autoneg is allowed to change */ 1239 config.abilities = abilities.abilities | 1240 I40E_AQ_PHY_ENABLE_AN; 1241 autoneg_changed = true; 1242 } 1243 } else { 1244 /* If autoneg is currently enabled */ 1245 if (hw->phy.link_info.an_info & I40E_AQ_AN_COMPLETED) { 1246 /* If autoneg is supported 10GBASE_T is the only PHY 1247 * that can disable it, so otherwise return error 1248 */ 1249 if (ethtool_link_ksettings_test_link_mode(&safe_ks, 1250 supported, 1251 Autoneg) && 1252 hw->phy.link_info.phy_type != 1253 I40E_PHY_TYPE_10GBASE_T) { 1254 netdev_info(netdev, "Autoneg cannot be disabled on this phy\n"); 1255 err = -EINVAL; 1256 goto done; 1257 } 1258 /* Autoneg is allowed to change */ 1259 config.abilities = abilities.abilities & 1260 ~I40E_AQ_PHY_ENABLE_AN; 1261 autoneg_changed = true; 1262 } 1263 } 1264 1265 if (ethtool_link_ksettings_test_link_mode(ks, advertising, 1266 100baseT_Full)) 1267 config.link_speed |= I40E_LINK_SPEED_100MB; 1268 if (ethtool_link_ksettings_test_link_mode(ks, advertising, 1269 1000baseT_Full) || 1270 ethtool_link_ksettings_test_link_mode(ks, advertising, 1271 1000baseX_Full) || 1272 ethtool_link_ksettings_test_link_mode(ks, advertising, 1273 1000baseKX_Full)) 1274 config.link_speed |= I40E_LINK_SPEED_1GB; 1275 if (ethtool_link_ksettings_test_link_mode(ks, advertising, 1276 10000baseT_Full) || 1277 ethtool_link_ksettings_test_link_mode(ks, advertising, 1278 10000baseKX4_Full) || 1279 ethtool_link_ksettings_test_link_mode(ks, advertising, 1280 10000baseKR_Full) || 1281 ethtool_link_ksettings_test_link_mode(ks, advertising, 1282 10000baseCR_Full) || 1283 ethtool_link_ksettings_test_link_mode(ks, advertising, 1284 10000baseSR_Full) || 1285 ethtool_link_ksettings_test_link_mode(ks, advertising, 1286 10000baseLR_Full)) 1287 config.link_speed |= I40E_LINK_SPEED_10GB; 1288 if (ethtool_link_ksettings_test_link_mode(ks, advertising, 1289 2500baseT_Full)) 1290 config.link_speed |= I40E_LINK_SPEED_2_5GB; 1291 if (ethtool_link_ksettings_test_link_mode(ks, advertising, 1292 5000baseT_Full)) 1293 config.link_speed |= I40E_LINK_SPEED_5GB; 1294 if (ethtool_link_ksettings_test_link_mode(ks, advertising, 1295 20000baseKR2_Full)) 1296 config.link_speed |= I40E_LINK_SPEED_20GB; 1297 if (ethtool_link_ksettings_test_link_mode(ks, advertising, 1298 25000baseCR_Full) || 1299 ethtool_link_ksettings_test_link_mode(ks, advertising, 1300 25000baseKR_Full) || 1301 ethtool_link_ksettings_test_link_mode(ks, advertising, 1302 25000baseSR_Full)) 1303 config.link_speed |= I40E_LINK_SPEED_25GB; 1304 if (ethtool_link_ksettings_test_link_mode(ks, advertising, 1305 40000baseKR4_Full) || 1306 ethtool_link_ksettings_test_link_mode(ks, advertising, 1307 40000baseCR4_Full) || 1308 ethtool_link_ksettings_test_link_mode(ks, advertising, 1309 40000baseSR4_Full) || 1310 ethtool_link_ksettings_test_link_mode(ks, advertising, 1311 40000baseLR4_Full)) 1312 config.link_speed |= I40E_LINK_SPEED_40GB; 1313 1314 /* If speed didn't get set, set it to what it currently is. 1315 * This is needed because if advertise is 0 (as it is when autoneg 1316 * is disabled) then speed won't get set. 1317 */ 1318 if (!config.link_speed) 1319 config.link_speed = abilities.link_speed; 1320 if (autoneg_changed || abilities.link_speed != config.link_speed) { 1321 /* copy over the rest of the abilities */ 1322 config.phy_type = abilities.phy_type; 1323 config.phy_type_ext = abilities.phy_type_ext; 1324 config.eee_capability = abilities.eee_capability; 1325 config.eeer = abilities.eeer_val; 1326 config.low_power_ctrl = abilities.d3_lpan; 1327 config.fec_config = abilities.fec_cfg_curr_mod_ext_info & 1328 I40E_AQ_PHY_FEC_CONFIG_MASK; 1329 1330 /* save the requested speeds */ 1331 hw->phy.link_info.requested_speeds = config.link_speed; 1332 /* set link and auto negotiation so changes take effect */ 1333 config.abilities |= I40E_AQ_PHY_ENABLE_ATOMIC_LINK; 1334 /* If link is up put link down */ 1335 if (hw->phy.link_info.link_info & I40E_AQ_LINK_UP) { 1336 /* Tell the OS link is going down, the link will go 1337 * back up when fw says it is ready asynchronously 1338 */ 1339 i40e_print_link_message(vsi, false); 1340 netif_carrier_off(netdev); 1341 netif_tx_stop_all_queues(netdev); 1342 } 1343 1344 /* make the aq call */ 1345 status = i40e_aq_set_phy_config(hw, &config, NULL); 1346 if (status) { 1347 netdev_info(netdev, 1348 "Set phy config failed, err %s aq_err %s\n", 1349 i40e_stat_str(hw, status), 1350 i40e_aq_str(hw, hw->aq.asq_last_status)); 1351 err = -EAGAIN; 1352 goto done; 1353 } 1354 1355 status = i40e_update_link_info(hw); 1356 if (status) 1357 netdev_dbg(netdev, 1358 "Updating link info failed with err %s aq_err %s\n", 1359 i40e_stat_str(hw, status), 1360 i40e_aq_str(hw, hw->aq.asq_last_status)); 1361 1362 } else { 1363 netdev_info(netdev, "Nothing changed, exiting without setting anything.\n"); 1364 } 1365 1366 done: 1367 clear_bit(__I40E_CONFIG_BUSY, pf->state); 1368 1369 return err; 1370 } 1371 1372 static int i40e_set_fec_cfg(struct net_device *netdev, u8 fec_cfg) 1373 { 1374 struct i40e_netdev_priv *np = netdev_priv(netdev); 1375 struct i40e_aq_get_phy_abilities_resp abilities; 1376 struct i40e_pf *pf = np->vsi->back; 1377 struct i40e_hw *hw = &pf->hw; 1378 i40e_status status = 0; 1379 u32 flags = 0; 1380 int err = 0; 1381 1382 flags = READ_ONCE(pf->flags); 1383 i40e_set_fec_in_flags(fec_cfg, &flags); 1384 1385 /* Get the current phy config */ 1386 memset(&abilities, 0, sizeof(abilities)); 1387 status = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, 1388 NULL); 1389 if (status) { 1390 err = -EAGAIN; 1391 goto done; 1392 } 1393 1394 if (abilities.fec_cfg_curr_mod_ext_info != fec_cfg) { 1395 struct i40e_aq_set_phy_config config; 1396 1397 memset(&config, 0, sizeof(config)); 1398 config.phy_type = abilities.phy_type; 1399 config.abilities = abilities.abilities; 1400 config.phy_type_ext = abilities.phy_type_ext; 1401 config.link_speed = abilities.link_speed; 1402 config.eee_capability = abilities.eee_capability; 1403 config.eeer = abilities.eeer_val; 1404 config.low_power_ctrl = abilities.d3_lpan; 1405 config.fec_config = fec_cfg & I40E_AQ_PHY_FEC_CONFIG_MASK; 1406 status = i40e_aq_set_phy_config(hw, &config, NULL); 1407 if (status) { 1408 netdev_info(netdev, 1409 "Set phy config failed, err %s aq_err %s\n", 1410 i40e_stat_str(hw, status), 1411 i40e_aq_str(hw, hw->aq.asq_last_status)); 1412 err = -EAGAIN; 1413 goto done; 1414 } 1415 pf->flags = flags; 1416 status = i40e_update_link_info(hw); 1417 if (status) 1418 /* debug level message only due to relation to the link 1419 * itself rather than to the FEC settings 1420 * (e.g. no physical connection etc.) 1421 */ 1422 netdev_dbg(netdev, 1423 "Updating link info failed with err %s aq_err %s\n", 1424 i40e_stat_str(hw, status), 1425 i40e_aq_str(hw, hw->aq.asq_last_status)); 1426 } 1427 1428 done: 1429 return err; 1430 } 1431 1432 static int i40e_get_fec_param(struct net_device *netdev, 1433 struct ethtool_fecparam *fecparam) 1434 { 1435 struct i40e_netdev_priv *np = netdev_priv(netdev); 1436 struct i40e_aq_get_phy_abilities_resp abilities; 1437 struct i40e_pf *pf = np->vsi->back; 1438 struct i40e_hw *hw = &pf->hw; 1439 i40e_status status = 0; 1440 int err = 0; 1441 u8 fec_cfg; 1442 1443 /* Get the current phy config */ 1444 memset(&abilities, 0, sizeof(abilities)); 1445 status = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, 1446 NULL); 1447 if (status) { 1448 err = -EAGAIN; 1449 goto done; 1450 } 1451 1452 fecparam->fec = 0; 1453 fec_cfg = abilities.fec_cfg_curr_mod_ext_info; 1454 if (fec_cfg & I40E_AQ_SET_FEC_AUTO) 1455 fecparam->fec |= ETHTOOL_FEC_AUTO; 1456 else if (fec_cfg & (I40E_AQ_SET_FEC_REQUEST_RS | 1457 I40E_AQ_SET_FEC_ABILITY_RS)) 1458 fecparam->fec |= ETHTOOL_FEC_RS; 1459 else if (fec_cfg & (I40E_AQ_SET_FEC_REQUEST_KR | 1460 I40E_AQ_SET_FEC_ABILITY_KR)) 1461 fecparam->fec |= ETHTOOL_FEC_BASER; 1462 if (fec_cfg == 0) 1463 fecparam->fec |= ETHTOOL_FEC_OFF; 1464 1465 if (hw->phy.link_info.fec_info & I40E_AQ_CONFIG_FEC_KR_ENA) 1466 fecparam->active_fec = ETHTOOL_FEC_BASER; 1467 else if (hw->phy.link_info.fec_info & I40E_AQ_CONFIG_FEC_RS_ENA) 1468 fecparam->active_fec = ETHTOOL_FEC_RS; 1469 else 1470 fecparam->active_fec = ETHTOOL_FEC_OFF; 1471 done: 1472 return err; 1473 } 1474 1475 static int i40e_set_fec_param(struct net_device *netdev, 1476 struct ethtool_fecparam *fecparam) 1477 { 1478 struct i40e_netdev_priv *np = netdev_priv(netdev); 1479 struct i40e_pf *pf = np->vsi->back; 1480 struct i40e_hw *hw = &pf->hw; 1481 u8 fec_cfg = 0; 1482 int err = 0; 1483 1484 if (hw->device_id != I40E_DEV_ID_25G_SFP28 && 1485 hw->device_id != I40E_DEV_ID_25G_B) { 1486 err = -EPERM; 1487 goto done; 1488 } 1489 1490 switch (fecparam->fec) { 1491 case ETHTOOL_FEC_AUTO: 1492 fec_cfg = I40E_AQ_SET_FEC_AUTO; 1493 break; 1494 case ETHTOOL_FEC_RS: 1495 fec_cfg = (I40E_AQ_SET_FEC_REQUEST_RS | 1496 I40E_AQ_SET_FEC_ABILITY_RS); 1497 break; 1498 case ETHTOOL_FEC_BASER: 1499 fec_cfg = (I40E_AQ_SET_FEC_REQUEST_KR | 1500 I40E_AQ_SET_FEC_ABILITY_KR); 1501 break; 1502 case ETHTOOL_FEC_OFF: 1503 case ETHTOOL_FEC_NONE: 1504 fec_cfg = 0; 1505 break; 1506 default: 1507 dev_warn(&pf->pdev->dev, "Unsupported FEC mode: %d", 1508 fecparam->fec); 1509 err = -EINVAL; 1510 goto done; 1511 } 1512 1513 err = i40e_set_fec_cfg(netdev, fec_cfg); 1514 1515 done: 1516 return err; 1517 } 1518 1519 static int i40e_nway_reset(struct net_device *netdev) 1520 { 1521 /* restart autonegotiation */ 1522 struct i40e_netdev_priv *np = netdev_priv(netdev); 1523 struct i40e_pf *pf = np->vsi->back; 1524 struct i40e_hw *hw = &pf->hw; 1525 bool link_up = hw->phy.link_info.link_info & I40E_AQ_LINK_UP; 1526 i40e_status ret = 0; 1527 1528 ret = i40e_aq_set_link_restart_an(hw, link_up, NULL); 1529 if (ret) { 1530 netdev_info(netdev, "link restart failed, err %s aq_err %s\n", 1531 i40e_stat_str(hw, ret), 1532 i40e_aq_str(hw, hw->aq.asq_last_status)); 1533 return -EIO; 1534 } 1535 1536 return 0; 1537 } 1538 1539 /** 1540 * i40e_get_pauseparam - Get Flow Control status 1541 * @netdev: netdevice structure 1542 * @pause: buffer to return pause parameters 1543 * 1544 * Return tx/rx-pause status 1545 **/ 1546 static void i40e_get_pauseparam(struct net_device *netdev, 1547 struct ethtool_pauseparam *pause) 1548 { 1549 struct i40e_netdev_priv *np = netdev_priv(netdev); 1550 struct i40e_pf *pf = np->vsi->back; 1551 struct i40e_hw *hw = &pf->hw; 1552 struct i40e_link_status *hw_link_info = &hw->phy.link_info; 1553 struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config; 1554 1555 pause->autoneg = 1556 ((hw_link_info->an_info & I40E_AQ_AN_COMPLETED) ? 1557 AUTONEG_ENABLE : AUTONEG_DISABLE); 1558 1559 /* PFC enabled so report LFC as off */ 1560 if (dcbx_cfg->pfc.pfcenable) { 1561 pause->rx_pause = 0; 1562 pause->tx_pause = 0; 1563 return; 1564 } 1565 1566 if (hw->fc.current_mode == I40E_FC_RX_PAUSE) { 1567 pause->rx_pause = 1; 1568 } else if (hw->fc.current_mode == I40E_FC_TX_PAUSE) { 1569 pause->tx_pause = 1; 1570 } else if (hw->fc.current_mode == I40E_FC_FULL) { 1571 pause->rx_pause = 1; 1572 pause->tx_pause = 1; 1573 } 1574 } 1575 1576 /** 1577 * i40e_set_pauseparam - Set Flow Control parameter 1578 * @netdev: network interface device structure 1579 * @pause: return tx/rx flow control status 1580 **/ 1581 static int i40e_set_pauseparam(struct net_device *netdev, 1582 struct ethtool_pauseparam *pause) 1583 { 1584 struct i40e_netdev_priv *np = netdev_priv(netdev); 1585 struct i40e_pf *pf = np->vsi->back; 1586 struct i40e_vsi *vsi = np->vsi; 1587 struct i40e_hw *hw = &pf->hw; 1588 struct i40e_link_status *hw_link_info = &hw->phy.link_info; 1589 struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config; 1590 bool link_up = hw_link_info->link_info & I40E_AQ_LINK_UP; 1591 i40e_status status; 1592 u8 aq_failures; 1593 int err = 0; 1594 u32 is_an; 1595 1596 /* Changing the port's flow control is not supported if this isn't the 1597 * port's controlling PF 1598 */ 1599 if (hw->partition_id != 1) { 1600 i40e_partition_setting_complaint(pf); 1601 return -EOPNOTSUPP; 1602 } 1603 1604 if (vsi != pf->vsi[pf->lan_vsi]) 1605 return -EOPNOTSUPP; 1606 1607 is_an = hw_link_info->an_info & I40E_AQ_AN_COMPLETED; 1608 if (pause->autoneg != is_an) { 1609 netdev_info(netdev, "To change autoneg please use: ethtool -s <dev> autoneg <on|off>\n"); 1610 return -EOPNOTSUPP; 1611 } 1612 1613 /* If we have link and don't have autoneg */ 1614 if (!test_bit(__I40E_DOWN, pf->state) && !is_an) { 1615 /* Send message that it might not necessarily work*/ 1616 netdev_info(netdev, "Autoneg did not complete so changing settings may not result in an actual change.\n"); 1617 } 1618 1619 if (dcbx_cfg->pfc.pfcenable) { 1620 netdev_info(netdev, 1621 "Priority flow control enabled. Cannot set link flow control.\n"); 1622 return -EOPNOTSUPP; 1623 } 1624 1625 if (pause->rx_pause && pause->tx_pause) 1626 hw->fc.requested_mode = I40E_FC_FULL; 1627 else if (pause->rx_pause && !pause->tx_pause) 1628 hw->fc.requested_mode = I40E_FC_RX_PAUSE; 1629 else if (!pause->rx_pause && pause->tx_pause) 1630 hw->fc.requested_mode = I40E_FC_TX_PAUSE; 1631 else if (!pause->rx_pause && !pause->tx_pause) 1632 hw->fc.requested_mode = I40E_FC_NONE; 1633 else 1634 return -EINVAL; 1635 1636 /* Tell the OS link is going down, the link will go back up when fw 1637 * says it is ready asynchronously 1638 */ 1639 i40e_print_link_message(vsi, false); 1640 netif_carrier_off(netdev); 1641 netif_tx_stop_all_queues(netdev); 1642 1643 /* Set the fc mode and only restart an if link is up*/ 1644 status = i40e_set_fc(hw, &aq_failures, link_up); 1645 1646 if (aq_failures & I40E_SET_FC_AQ_FAIL_GET) { 1647 netdev_info(netdev, "Set fc failed on the get_phy_capabilities call with err %s aq_err %s\n", 1648 i40e_stat_str(hw, status), 1649 i40e_aq_str(hw, hw->aq.asq_last_status)); 1650 err = -EAGAIN; 1651 } 1652 if (aq_failures & I40E_SET_FC_AQ_FAIL_SET) { 1653 netdev_info(netdev, "Set fc failed on the set_phy_config call with err %s aq_err %s\n", 1654 i40e_stat_str(hw, status), 1655 i40e_aq_str(hw, hw->aq.asq_last_status)); 1656 err = -EAGAIN; 1657 } 1658 if (aq_failures & I40E_SET_FC_AQ_FAIL_UPDATE) { 1659 netdev_info(netdev, "Set fc failed on the get_link_info call with err %s aq_err %s\n", 1660 i40e_stat_str(hw, status), 1661 i40e_aq_str(hw, hw->aq.asq_last_status)); 1662 err = -EAGAIN; 1663 } 1664 1665 if (!test_bit(__I40E_DOWN, pf->state) && is_an) { 1666 /* Give it a little more time to try to come back */ 1667 msleep(75); 1668 if (!test_bit(__I40E_DOWN, pf->state)) 1669 return i40e_nway_reset(netdev); 1670 } 1671 1672 return err; 1673 } 1674 1675 static u32 i40e_get_msglevel(struct net_device *netdev) 1676 { 1677 struct i40e_netdev_priv *np = netdev_priv(netdev); 1678 struct i40e_pf *pf = np->vsi->back; 1679 u32 debug_mask = pf->hw.debug_mask; 1680 1681 if (debug_mask) 1682 netdev_info(netdev, "i40e debug_mask: 0x%08X\n", debug_mask); 1683 1684 return pf->msg_enable; 1685 } 1686 1687 static void i40e_set_msglevel(struct net_device *netdev, u32 data) 1688 { 1689 struct i40e_netdev_priv *np = netdev_priv(netdev); 1690 struct i40e_pf *pf = np->vsi->back; 1691 1692 if (I40E_DEBUG_USER & data) 1693 pf->hw.debug_mask = data; 1694 else 1695 pf->msg_enable = data; 1696 } 1697 1698 static int i40e_get_regs_len(struct net_device *netdev) 1699 { 1700 int reg_count = 0; 1701 int i; 1702 1703 for (i = 0; i40e_reg_list[i].offset != 0; i++) 1704 reg_count += i40e_reg_list[i].elements; 1705 1706 return reg_count * sizeof(u32); 1707 } 1708 1709 static void i40e_get_regs(struct net_device *netdev, struct ethtool_regs *regs, 1710 void *p) 1711 { 1712 struct i40e_netdev_priv *np = netdev_priv(netdev); 1713 struct i40e_pf *pf = np->vsi->back; 1714 struct i40e_hw *hw = &pf->hw; 1715 u32 *reg_buf = p; 1716 unsigned int i, j, ri; 1717 u32 reg; 1718 1719 /* Tell ethtool which driver-version-specific regs output we have. 1720 * 1721 * At some point, if we have ethtool doing special formatting of 1722 * this data, it will rely on this version number to know how to 1723 * interpret things. Hence, this needs to be updated if/when the 1724 * diags register table is changed. 1725 */ 1726 regs->version = 1; 1727 1728 /* loop through the diags reg table for what to print */ 1729 ri = 0; 1730 for (i = 0; i40e_reg_list[i].offset != 0; i++) { 1731 for (j = 0; j < i40e_reg_list[i].elements; j++) { 1732 reg = i40e_reg_list[i].offset 1733 + (j * i40e_reg_list[i].stride); 1734 reg_buf[ri++] = rd32(hw, reg); 1735 } 1736 } 1737 1738 } 1739 1740 static int i40e_get_eeprom(struct net_device *netdev, 1741 struct ethtool_eeprom *eeprom, u8 *bytes) 1742 { 1743 struct i40e_netdev_priv *np = netdev_priv(netdev); 1744 struct i40e_hw *hw = &np->vsi->back->hw; 1745 struct i40e_pf *pf = np->vsi->back; 1746 int ret_val = 0, len, offset; 1747 u8 *eeprom_buff; 1748 u16 i, sectors; 1749 bool last; 1750 u32 magic; 1751 1752 #define I40E_NVM_SECTOR_SIZE 4096 1753 if (eeprom->len == 0) 1754 return -EINVAL; 1755 1756 /* check for NVMUpdate access method */ 1757 magic = hw->vendor_id | (hw->device_id << 16); 1758 if (eeprom->magic && eeprom->magic != magic) { 1759 struct i40e_nvm_access *cmd = (struct i40e_nvm_access *)eeprom; 1760 int errno = 0; 1761 1762 /* make sure it is the right magic for NVMUpdate */ 1763 if ((eeprom->magic >> 16) != hw->device_id) 1764 errno = -EINVAL; 1765 else if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) || 1766 test_bit(__I40E_RESET_INTR_RECEIVED, pf->state)) 1767 errno = -EBUSY; 1768 else 1769 ret_val = i40e_nvmupd_command(hw, cmd, bytes, &errno); 1770 1771 if ((errno || ret_val) && (hw->debug_mask & I40E_DEBUG_NVM)) 1772 dev_info(&pf->pdev->dev, 1773 "NVMUpdate read failed err=%d status=0x%x errno=%d module=%d offset=0x%x size=%d\n", 1774 ret_val, hw->aq.asq_last_status, errno, 1775 (u8)(cmd->config & I40E_NVM_MOD_PNT_MASK), 1776 cmd->offset, cmd->data_size); 1777 1778 return errno; 1779 } 1780 1781 /* normal ethtool get_eeprom support */ 1782 eeprom->magic = hw->vendor_id | (hw->device_id << 16); 1783 1784 eeprom_buff = kzalloc(eeprom->len, GFP_KERNEL); 1785 if (!eeprom_buff) 1786 return -ENOMEM; 1787 1788 ret_val = i40e_acquire_nvm(hw, I40E_RESOURCE_READ); 1789 if (ret_val) { 1790 dev_info(&pf->pdev->dev, 1791 "Failed Acquiring NVM resource for read err=%d status=0x%x\n", 1792 ret_val, hw->aq.asq_last_status); 1793 goto free_buff; 1794 } 1795 1796 sectors = eeprom->len / I40E_NVM_SECTOR_SIZE; 1797 sectors += (eeprom->len % I40E_NVM_SECTOR_SIZE) ? 1 : 0; 1798 len = I40E_NVM_SECTOR_SIZE; 1799 last = false; 1800 for (i = 0; i < sectors; i++) { 1801 if (i == (sectors - 1)) { 1802 len = eeprom->len - (I40E_NVM_SECTOR_SIZE * i); 1803 last = true; 1804 } 1805 offset = eeprom->offset + (I40E_NVM_SECTOR_SIZE * i), 1806 ret_val = i40e_aq_read_nvm(hw, 0x0, offset, len, 1807 (u8 *)eeprom_buff + (I40E_NVM_SECTOR_SIZE * i), 1808 last, NULL); 1809 if (ret_val && hw->aq.asq_last_status == I40E_AQ_RC_EPERM) { 1810 dev_info(&pf->pdev->dev, 1811 "read NVM failed, invalid offset 0x%x\n", 1812 offset); 1813 break; 1814 } else if (ret_val && 1815 hw->aq.asq_last_status == I40E_AQ_RC_EACCES) { 1816 dev_info(&pf->pdev->dev, 1817 "read NVM failed, access, offset 0x%x\n", 1818 offset); 1819 break; 1820 } else if (ret_val) { 1821 dev_info(&pf->pdev->dev, 1822 "read NVM failed offset %d err=%d status=0x%x\n", 1823 offset, ret_val, hw->aq.asq_last_status); 1824 break; 1825 } 1826 } 1827 1828 i40e_release_nvm(hw); 1829 memcpy(bytes, (u8 *)eeprom_buff, eeprom->len); 1830 free_buff: 1831 kfree(eeprom_buff); 1832 return ret_val; 1833 } 1834 1835 static int i40e_get_eeprom_len(struct net_device *netdev) 1836 { 1837 struct i40e_netdev_priv *np = netdev_priv(netdev); 1838 struct i40e_hw *hw = &np->vsi->back->hw; 1839 u32 val; 1840 1841 #define X722_EEPROM_SCOPE_LIMIT 0x5B9FFF 1842 if (hw->mac.type == I40E_MAC_X722) { 1843 val = X722_EEPROM_SCOPE_LIMIT + 1; 1844 return val; 1845 } 1846 val = (rd32(hw, I40E_GLPCI_LBARCTRL) 1847 & I40E_GLPCI_LBARCTRL_FL_SIZE_MASK) 1848 >> I40E_GLPCI_LBARCTRL_FL_SIZE_SHIFT; 1849 /* register returns value in power of 2, 64Kbyte chunks. */ 1850 val = (64 * 1024) * BIT(val); 1851 return val; 1852 } 1853 1854 static int i40e_set_eeprom(struct net_device *netdev, 1855 struct ethtool_eeprom *eeprom, u8 *bytes) 1856 { 1857 struct i40e_netdev_priv *np = netdev_priv(netdev); 1858 struct i40e_hw *hw = &np->vsi->back->hw; 1859 struct i40e_pf *pf = np->vsi->back; 1860 struct i40e_nvm_access *cmd = (struct i40e_nvm_access *)eeprom; 1861 int ret_val = 0; 1862 int errno = 0; 1863 u32 magic; 1864 1865 /* normal ethtool set_eeprom is not supported */ 1866 magic = hw->vendor_id | (hw->device_id << 16); 1867 if (eeprom->magic == magic) 1868 errno = -EOPNOTSUPP; 1869 /* check for NVMUpdate access method */ 1870 else if (!eeprom->magic || (eeprom->magic >> 16) != hw->device_id) 1871 errno = -EINVAL; 1872 else if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) || 1873 test_bit(__I40E_RESET_INTR_RECEIVED, pf->state)) 1874 errno = -EBUSY; 1875 else 1876 ret_val = i40e_nvmupd_command(hw, cmd, bytes, &errno); 1877 1878 if ((errno || ret_val) && (hw->debug_mask & I40E_DEBUG_NVM)) 1879 dev_info(&pf->pdev->dev, 1880 "NVMUpdate write failed err=%d status=0x%x errno=%d module=%d offset=0x%x size=%d\n", 1881 ret_val, hw->aq.asq_last_status, errno, 1882 (u8)(cmd->config & I40E_NVM_MOD_PNT_MASK), 1883 cmd->offset, cmd->data_size); 1884 1885 return errno; 1886 } 1887 1888 static void i40e_get_drvinfo(struct net_device *netdev, 1889 struct ethtool_drvinfo *drvinfo) 1890 { 1891 struct i40e_netdev_priv *np = netdev_priv(netdev); 1892 struct i40e_vsi *vsi = np->vsi; 1893 struct i40e_pf *pf = vsi->back; 1894 1895 strlcpy(drvinfo->driver, i40e_driver_name, sizeof(drvinfo->driver)); 1896 strlcpy(drvinfo->version, i40e_driver_version_str, 1897 sizeof(drvinfo->version)); 1898 strlcpy(drvinfo->fw_version, i40e_nvm_version_str(&pf->hw), 1899 sizeof(drvinfo->fw_version)); 1900 strlcpy(drvinfo->bus_info, pci_name(pf->pdev), 1901 sizeof(drvinfo->bus_info)); 1902 drvinfo->n_priv_flags = I40E_PRIV_FLAGS_STR_LEN; 1903 if (pf->hw.pf_id == 0) 1904 drvinfo->n_priv_flags += I40E_GL_PRIV_FLAGS_STR_LEN; 1905 } 1906 1907 static void i40e_get_ringparam(struct net_device *netdev, 1908 struct ethtool_ringparam *ring) 1909 { 1910 struct i40e_netdev_priv *np = netdev_priv(netdev); 1911 struct i40e_pf *pf = np->vsi->back; 1912 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi]; 1913 1914 ring->rx_max_pending = I40E_MAX_NUM_DESCRIPTORS; 1915 ring->tx_max_pending = I40E_MAX_NUM_DESCRIPTORS; 1916 ring->rx_mini_max_pending = 0; 1917 ring->rx_jumbo_max_pending = 0; 1918 ring->rx_pending = vsi->rx_rings[0]->count; 1919 ring->tx_pending = vsi->tx_rings[0]->count; 1920 ring->rx_mini_pending = 0; 1921 ring->rx_jumbo_pending = 0; 1922 } 1923 1924 static bool i40e_active_tx_ring_index(struct i40e_vsi *vsi, u16 index) 1925 { 1926 if (i40e_enabled_xdp_vsi(vsi)) { 1927 return index < vsi->num_queue_pairs || 1928 (index >= vsi->alloc_queue_pairs && 1929 index < vsi->alloc_queue_pairs + vsi->num_queue_pairs); 1930 } 1931 1932 return index < vsi->num_queue_pairs; 1933 } 1934 1935 static int i40e_set_ringparam(struct net_device *netdev, 1936 struct ethtool_ringparam *ring) 1937 { 1938 struct i40e_ring *tx_rings = NULL, *rx_rings = NULL; 1939 struct i40e_netdev_priv *np = netdev_priv(netdev); 1940 struct i40e_hw *hw = &np->vsi->back->hw; 1941 struct i40e_vsi *vsi = np->vsi; 1942 struct i40e_pf *pf = vsi->back; 1943 u32 new_rx_count, new_tx_count; 1944 u16 tx_alloc_queue_pairs; 1945 int timeout = 50; 1946 int i, err = 0; 1947 1948 if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending)) 1949 return -EINVAL; 1950 1951 if (ring->tx_pending > I40E_MAX_NUM_DESCRIPTORS || 1952 ring->tx_pending < I40E_MIN_NUM_DESCRIPTORS || 1953 ring->rx_pending > I40E_MAX_NUM_DESCRIPTORS || 1954 ring->rx_pending < I40E_MIN_NUM_DESCRIPTORS) { 1955 netdev_info(netdev, 1956 "Descriptors requested (Tx: %d / Rx: %d) out of range [%d-%d]\n", 1957 ring->tx_pending, ring->rx_pending, 1958 I40E_MIN_NUM_DESCRIPTORS, I40E_MAX_NUM_DESCRIPTORS); 1959 return -EINVAL; 1960 } 1961 1962 new_tx_count = ALIGN(ring->tx_pending, I40E_REQ_DESCRIPTOR_MULTIPLE); 1963 new_rx_count = ALIGN(ring->rx_pending, I40E_REQ_DESCRIPTOR_MULTIPLE); 1964 1965 /* if nothing to do return success */ 1966 if ((new_tx_count == vsi->tx_rings[0]->count) && 1967 (new_rx_count == vsi->rx_rings[0]->count)) 1968 return 0; 1969 1970 /* If there is a AF_XDP UMEM attached to any of Rx rings, 1971 * disallow changing the number of descriptors -- regardless 1972 * if the netdev is running or not. 1973 */ 1974 if (i40e_xsk_any_rx_ring_enabled(vsi)) 1975 return -EBUSY; 1976 1977 while (test_and_set_bit(__I40E_CONFIG_BUSY, pf->state)) { 1978 timeout--; 1979 if (!timeout) 1980 return -EBUSY; 1981 usleep_range(1000, 2000); 1982 } 1983 1984 if (!netif_running(vsi->netdev)) { 1985 /* simple case - set for the next time the netdev is started */ 1986 for (i = 0; i < vsi->num_queue_pairs; i++) { 1987 vsi->tx_rings[i]->count = new_tx_count; 1988 vsi->rx_rings[i]->count = new_rx_count; 1989 if (i40e_enabled_xdp_vsi(vsi)) 1990 vsi->xdp_rings[i]->count = new_tx_count; 1991 } 1992 vsi->num_tx_desc = new_tx_count; 1993 vsi->num_rx_desc = new_rx_count; 1994 goto done; 1995 } 1996 1997 /* We can't just free everything and then setup again, 1998 * because the ISRs in MSI-X mode get passed pointers 1999 * to the Tx and Rx ring structs. 2000 */ 2001 2002 /* alloc updated Tx and XDP Tx resources */ 2003 tx_alloc_queue_pairs = vsi->alloc_queue_pairs * 2004 (i40e_enabled_xdp_vsi(vsi) ? 2 : 1); 2005 if (new_tx_count != vsi->tx_rings[0]->count) { 2006 netdev_info(netdev, 2007 "Changing Tx descriptor count from %d to %d.\n", 2008 vsi->tx_rings[0]->count, new_tx_count); 2009 tx_rings = kcalloc(tx_alloc_queue_pairs, 2010 sizeof(struct i40e_ring), GFP_KERNEL); 2011 if (!tx_rings) { 2012 err = -ENOMEM; 2013 goto done; 2014 } 2015 2016 for (i = 0; i < tx_alloc_queue_pairs; i++) { 2017 if (!i40e_active_tx_ring_index(vsi, i)) 2018 continue; 2019 2020 tx_rings[i] = *vsi->tx_rings[i]; 2021 tx_rings[i].count = new_tx_count; 2022 /* the desc and bi pointers will be reallocated in the 2023 * setup call 2024 */ 2025 tx_rings[i].desc = NULL; 2026 tx_rings[i].rx_bi = NULL; 2027 err = i40e_setup_tx_descriptors(&tx_rings[i]); 2028 if (err) { 2029 while (i) { 2030 i--; 2031 if (!i40e_active_tx_ring_index(vsi, i)) 2032 continue; 2033 i40e_free_tx_resources(&tx_rings[i]); 2034 } 2035 kfree(tx_rings); 2036 tx_rings = NULL; 2037 2038 goto done; 2039 } 2040 } 2041 } 2042 2043 /* alloc updated Rx resources */ 2044 if (new_rx_count != vsi->rx_rings[0]->count) { 2045 netdev_info(netdev, 2046 "Changing Rx descriptor count from %d to %d\n", 2047 vsi->rx_rings[0]->count, new_rx_count); 2048 rx_rings = kcalloc(vsi->alloc_queue_pairs, 2049 sizeof(struct i40e_ring), GFP_KERNEL); 2050 if (!rx_rings) { 2051 err = -ENOMEM; 2052 goto free_tx; 2053 } 2054 2055 for (i = 0; i < vsi->num_queue_pairs; i++) { 2056 u16 unused; 2057 2058 /* clone ring and setup updated count */ 2059 rx_rings[i] = *vsi->rx_rings[i]; 2060 rx_rings[i].count = new_rx_count; 2061 /* the desc and bi pointers will be reallocated in the 2062 * setup call 2063 */ 2064 rx_rings[i].desc = NULL; 2065 rx_rings[i].rx_bi = NULL; 2066 /* Clear cloned XDP RX-queue info before setup call */ 2067 memset(&rx_rings[i].xdp_rxq, 0, sizeof(rx_rings[i].xdp_rxq)); 2068 /* this is to allow wr32 to have something to write to 2069 * during early allocation of Rx buffers 2070 */ 2071 rx_rings[i].tail = hw->hw_addr + I40E_PRTGEN_STATUS; 2072 err = i40e_setup_rx_descriptors(&rx_rings[i]); 2073 if (err) 2074 goto rx_unwind; 2075 2076 /* now allocate the Rx buffers to make sure the OS 2077 * has enough memory, any failure here means abort 2078 */ 2079 unused = I40E_DESC_UNUSED(&rx_rings[i]); 2080 err = i40e_alloc_rx_buffers(&rx_rings[i], unused); 2081 rx_unwind: 2082 if (err) { 2083 do { 2084 i40e_free_rx_resources(&rx_rings[i]); 2085 } while (i--); 2086 kfree(rx_rings); 2087 rx_rings = NULL; 2088 2089 goto free_tx; 2090 } 2091 } 2092 } 2093 2094 /* Bring interface down, copy in the new ring info, 2095 * then restore the interface 2096 */ 2097 i40e_down(vsi); 2098 2099 if (tx_rings) { 2100 for (i = 0; i < tx_alloc_queue_pairs; i++) { 2101 if (i40e_active_tx_ring_index(vsi, i)) { 2102 i40e_free_tx_resources(vsi->tx_rings[i]); 2103 *vsi->tx_rings[i] = tx_rings[i]; 2104 } 2105 } 2106 kfree(tx_rings); 2107 tx_rings = NULL; 2108 } 2109 2110 if (rx_rings) { 2111 for (i = 0; i < vsi->num_queue_pairs; i++) { 2112 i40e_free_rx_resources(vsi->rx_rings[i]); 2113 /* get the real tail offset */ 2114 rx_rings[i].tail = vsi->rx_rings[i]->tail; 2115 /* this is to fake out the allocation routine 2116 * into thinking it has to realloc everything 2117 * but the recycling logic will let us re-use 2118 * the buffers allocated above 2119 */ 2120 rx_rings[i].next_to_use = 0; 2121 rx_rings[i].next_to_clean = 0; 2122 rx_rings[i].next_to_alloc = 0; 2123 /* do a struct copy */ 2124 *vsi->rx_rings[i] = rx_rings[i]; 2125 } 2126 kfree(rx_rings); 2127 rx_rings = NULL; 2128 } 2129 2130 vsi->num_tx_desc = new_tx_count; 2131 vsi->num_rx_desc = new_rx_count; 2132 i40e_up(vsi); 2133 2134 free_tx: 2135 /* error cleanup if the Rx allocations failed after getting Tx */ 2136 if (tx_rings) { 2137 for (i = 0; i < tx_alloc_queue_pairs; i++) { 2138 if (i40e_active_tx_ring_index(vsi, i)) 2139 i40e_free_tx_resources(vsi->tx_rings[i]); 2140 } 2141 kfree(tx_rings); 2142 tx_rings = NULL; 2143 } 2144 2145 done: 2146 clear_bit(__I40E_CONFIG_BUSY, pf->state); 2147 2148 return err; 2149 } 2150 2151 /** 2152 * i40e_get_stats_count - return the stats count for a device 2153 * @netdev: the netdev to return the count for 2154 * 2155 * Returns the total number of statistics for this netdev. Note that even 2156 * though this is a function, it is required that the count for a specific 2157 * netdev must never change. Basing the count on static values such as the 2158 * maximum number of queues or the device type is ok. However, the API for 2159 * obtaining stats is *not* safe against changes based on non-static 2160 * values such as the *current* number of queues, or runtime flags. 2161 * 2162 * If a statistic is not always enabled, return it as part of the count 2163 * anyways, always return its string, and report its value as zero. 2164 **/ 2165 static int i40e_get_stats_count(struct net_device *netdev) 2166 { 2167 struct i40e_netdev_priv *np = netdev_priv(netdev); 2168 struct i40e_vsi *vsi = np->vsi; 2169 struct i40e_pf *pf = vsi->back; 2170 int stats_len; 2171 2172 if (vsi == pf->vsi[pf->lan_vsi] && pf->hw.partition_id == 1) 2173 stats_len = I40E_PF_STATS_LEN; 2174 else 2175 stats_len = I40E_VSI_STATS_LEN; 2176 2177 /* The number of stats reported for a given net_device must remain 2178 * constant throughout the life of that device. 2179 * 2180 * This is because the API for obtaining the size, strings, and stats 2181 * is spread out over three separate ethtool ioctls. There is no safe 2182 * way to lock the number of stats across these calls, so we must 2183 * assume that they will never change. 2184 * 2185 * Due to this, we report the maximum number of queues, even if not 2186 * every queue is currently configured. Since we always allocate 2187 * queues in pairs, we'll just use netdev->num_tx_queues * 2. This 2188 * works because the num_tx_queues is set at device creation and never 2189 * changes. 2190 */ 2191 stats_len += I40E_QUEUE_STATS_LEN * 2 * netdev->num_tx_queues; 2192 2193 return stats_len; 2194 } 2195 2196 static int i40e_get_sset_count(struct net_device *netdev, int sset) 2197 { 2198 struct i40e_netdev_priv *np = netdev_priv(netdev); 2199 struct i40e_vsi *vsi = np->vsi; 2200 struct i40e_pf *pf = vsi->back; 2201 2202 switch (sset) { 2203 case ETH_SS_TEST: 2204 return I40E_TEST_LEN; 2205 case ETH_SS_STATS: 2206 return i40e_get_stats_count(netdev); 2207 case ETH_SS_PRIV_FLAGS: 2208 return I40E_PRIV_FLAGS_STR_LEN + 2209 (pf->hw.pf_id == 0 ? I40E_GL_PRIV_FLAGS_STR_LEN : 0); 2210 default: 2211 return -EOPNOTSUPP; 2212 } 2213 } 2214 2215 /** 2216 * i40e_get_pfc_stats - copy HW PFC statistics to formatted structure 2217 * @pf: the PF device structure 2218 * @i: the priority value to copy 2219 * 2220 * The PFC stats are found as arrays in pf->stats, which is not easy to pass 2221 * into i40e_add_ethtool_stats. Produce a formatted i40e_pfc_stats structure 2222 * of the PFC stats for the given priority. 2223 **/ 2224 static inline struct i40e_pfc_stats 2225 i40e_get_pfc_stats(struct i40e_pf *pf, unsigned int i) 2226 { 2227 #define I40E_GET_PFC_STAT(stat, priority) \ 2228 .stat = pf->stats.stat[priority] 2229 2230 struct i40e_pfc_stats pfc = { 2231 I40E_GET_PFC_STAT(priority_xon_rx, i), 2232 I40E_GET_PFC_STAT(priority_xoff_rx, i), 2233 I40E_GET_PFC_STAT(priority_xon_tx, i), 2234 I40E_GET_PFC_STAT(priority_xoff_tx, i), 2235 I40E_GET_PFC_STAT(priority_xon_2_xoff, i), 2236 }; 2237 return pfc; 2238 } 2239 2240 /** 2241 * i40e_get_ethtool_stats - copy stat values into supplied buffer 2242 * @netdev: the netdev to collect stats for 2243 * @stats: ethtool stats command structure 2244 * @data: ethtool supplied buffer 2245 * 2246 * Copy the stats values for this netdev into the buffer. Expects data to be 2247 * pre-allocated to the size returned by i40e_get_stats_count.. Note that all 2248 * statistics must be copied in a static order, and the count must not change 2249 * for a given netdev. See i40e_get_stats_count for more details. 2250 * 2251 * If a statistic is not currently valid (such as a disabled queue), this 2252 * function reports its value as zero. 2253 **/ 2254 static void i40e_get_ethtool_stats(struct net_device *netdev, 2255 struct ethtool_stats *stats, u64 *data) 2256 { 2257 struct i40e_netdev_priv *np = netdev_priv(netdev); 2258 struct i40e_vsi *vsi = np->vsi; 2259 struct i40e_pf *pf = vsi->back; 2260 struct i40e_veb *veb = NULL; 2261 unsigned int i; 2262 bool veb_stats; 2263 u64 *p = data; 2264 2265 i40e_update_stats(vsi); 2266 2267 i40e_add_ethtool_stats(&data, i40e_get_vsi_stats_struct(vsi), 2268 i40e_gstrings_net_stats); 2269 2270 i40e_add_ethtool_stats(&data, vsi, i40e_gstrings_misc_stats); 2271 2272 rcu_read_lock(); 2273 for (i = 0; i < netdev->num_tx_queues; i++) { 2274 i40e_add_queue_stats(&data, READ_ONCE(vsi->tx_rings[i])); 2275 i40e_add_queue_stats(&data, READ_ONCE(vsi->rx_rings[i])); 2276 } 2277 rcu_read_unlock(); 2278 2279 if (vsi != pf->vsi[pf->lan_vsi] || pf->hw.partition_id != 1) 2280 goto check_data_pointer; 2281 2282 veb_stats = ((pf->lan_veb != I40E_NO_VEB) && 2283 (pf->lan_veb < I40E_MAX_VEB) && 2284 (pf->flags & I40E_FLAG_VEB_STATS_ENABLED)); 2285 2286 if (veb_stats) { 2287 veb = pf->veb[pf->lan_veb]; 2288 i40e_update_veb_stats(veb); 2289 } 2290 2291 /* If veb stats aren't enabled, pass NULL instead of the veb so that 2292 * we initialize stats to zero and update the data pointer 2293 * intelligently 2294 */ 2295 i40e_add_ethtool_stats(&data, veb_stats ? veb : NULL, 2296 i40e_gstrings_veb_stats); 2297 2298 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) 2299 i40e_add_ethtool_stats(&data, veb_stats ? veb : NULL, 2300 i40e_gstrings_veb_tc_stats); 2301 2302 i40e_add_ethtool_stats(&data, pf, i40e_gstrings_stats); 2303 2304 for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) { 2305 struct i40e_pfc_stats pfc = i40e_get_pfc_stats(pf, i); 2306 2307 i40e_add_ethtool_stats(&data, &pfc, i40e_gstrings_pfc_stats); 2308 } 2309 2310 check_data_pointer: 2311 WARN_ONCE(data - p != i40e_get_stats_count(netdev), 2312 "ethtool stats count mismatch!"); 2313 } 2314 2315 /** 2316 * i40e_get_stat_strings - copy stat strings into supplied buffer 2317 * @netdev: the netdev to collect strings for 2318 * @data: supplied buffer to copy strings into 2319 * 2320 * Copy the strings related to stats for this netdev. Expects data to be 2321 * pre-allocated with the size reported by i40e_get_stats_count. Note that the 2322 * strings must be copied in a static order and the total count must not 2323 * change for a given netdev. See i40e_get_stats_count for more details. 2324 **/ 2325 static void i40e_get_stat_strings(struct net_device *netdev, u8 *data) 2326 { 2327 struct i40e_netdev_priv *np = netdev_priv(netdev); 2328 struct i40e_vsi *vsi = np->vsi; 2329 struct i40e_pf *pf = vsi->back; 2330 unsigned int i; 2331 u8 *p = data; 2332 2333 i40e_add_stat_strings(&data, i40e_gstrings_net_stats); 2334 2335 i40e_add_stat_strings(&data, i40e_gstrings_misc_stats); 2336 2337 for (i = 0; i < netdev->num_tx_queues; i++) { 2338 i40e_add_stat_strings(&data, i40e_gstrings_queue_stats, 2339 "tx", i); 2340 i40e_add_stat_strings(&data, i40e_gstrings_queue_stats, 2341 "rx", i); 2342 } 2343 2344 if (vsi != pf->vsi[pf->lan_vsi] || pf->hw.partition_id != 1) 2345 goto check_data_pointer; 2346 2347 i40e_add_stat_strings(&data, i40e_gstrings_veb_stats); 2348 2349 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) 2350 i40e_add_stat_strings(&data, i40e_gstrings_veb_tc_stats, i); 2351 2352 i40e_add_stat_strings(&data, i40e_gstrings_stats); 2353 2354 for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) 2355 i40e_add_stat_strings(&data, i40e_gstrings_pfc_stats, i); 2356 2357 check_data_pointer: 2358 WARN_ONCE(data - p != i40e_get_stats_count(netdev) * ETH_GSTRING_LEN, 2359 "stat strings count mismatch!"); 2360 } 2361 2362 static void i40e_get_priv_flag_strings(struct net_device *netdev, u8 *data) 2363 { 2364 struct i40e_netdev_priv *np = netdev_priv(netdev); 2365 struct i40e_vsi *vsi = np->vsi; 2366 struct i40e_pf *pf = vsi->back; 2367 char *p = (char *)data; 2368 unsigned int i; 2369 2370 for (i = 0; i < I40E_PRIV_FLAGS_STR_LEN; i++) { 2371 snprintf(p, ETH_GSTRING_LEN, "%s", 2372 i40e_gstrings_priv_flags[i].flag_string); 2373 p += ETH_GSTRING_LEN; 2374 } 2375 if (pf->hw.pf_id != 0) 2376 return; 2377 for (i = 0; i < I40E_GL_PRIV_FLAGS_STR_LEN; i++) { 2378 snprintf(p, ETH_GSTRING_LEN, "%s", 2379 i40e_gl_gstrings_priv_flags[i].flag_string); 2380 p += ETH_GSTRING_LEN; 2381 } 2382 } 2383 2384 static void i40e_get_strings(struct net_device *netdev, u32 stringset, 2385 u8 *data) 2386 { 2387 switch (stringset) { 2388 case ETH_SS_TEST: 2389 memcpy(data, i40e_gstrings_test, 2390 I40E_TEST_LEN * ETH_GSTRING_LEN); 2391 break; 2392 case ETH_SS_STATS: 2393 i40e_get_stat_strings(netdev, data); 2394 break; 2395 case ETH_SS_PRIV_FLAGS: 2396 i40e_get_priv_flag_strings(netdev, data); 2397 break; 2398 default: 2399 break; 2400 } 2401 } 2402 2403 static int i40e_get_ts_info(struct net_device *dev, 2404 struct ethtool_ts_info *info) 2405 { 2406 struct i40e_pf *pf = i40e_netdev_to_pf(dev); 2407 2408 /* only report HW timestamping if PTP is enabled */ 2409 if (!(pf->flags & I40E_FLAG_PTP)) 2410 return ethtool_op_get_ts_info(dev, info); 2411 2412 info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE | 2413 SOF_TIMESTAMPING_RX_SOFTWARE | 2414 SOF_TIMESTAMPING_SOFTWARE | 2415 SOF_TIMESTAMPING_TX_HARDWARE | 2416 SOF_TIMESTAMPING_RX_HARDWARE | 2417 SOF_TIMESTAMPING_RAW_HARDWARE; 2418 2419 if (pf->ptp_clock) 2420 info->phc_index = ptp_clock_index(pf->ptp_clock); 2421 else 2422 info->phc_index = -1; 2423 2424 info->tx_types = BIT(HWTSTAMP_TX_OFF) | BIT(HWTSTAMP_TX_ON); 2425 2426 info->rx_filters = BIT(HWTSTAMP_FILTER_NONE) | 2427 BIT(HWTSTAMP_FILTER_PTP_V2_L2_EVENT) | 2428 BIT(HWTSTAMP_FILTER_PTP_V2_L2_SYNC) | 2429 BIT(HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ); 2430 2431 if (pf->hw_features & I40E_HW_PTP_L4_CAPABLE) 2432 info->rx_filters |= BIT(HWTSTAMP_FILTER_PTP_V1_L4_SYNC) | 2433 BIT(HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ) | 2434 BIT(HWTSTAMP_FILTER_PTP_V2_EVENT) | 2435 BIT(HWTSTAMP_FILTER_PTP_V2_L4_EVENT) | 2436 BIT(HWTSTAMP_FILTER_PTP_V2_SYNC) | 2437 BIT(HWTSTAMP_FILTER_PTP_V2_L4_SYNC) | 2438 BIT(HWTSTAMP_FILTER_PTP_V2_DELAY_REQ) | 2439 BIT(HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ); 2440 2441 return 0; 2442 } 2443 2444 static u64 i40e_link_test(struct net_device *netdev, u64 *data) 2445 { 2446 struct i40e_netdev_priv *np = netdev_priv(netdev); 2447 struct i40e_pf *pf = np->vsi->back; 2448 i40e_status status; 2449 bool link_up = false; 2450 2451 netif_info(pf, hw, netdev, "link test\n"); 2452 status = i40e_get_link_status(&pf->hw, &link_up); 2453 if (status) { 2454 netif_err(pf, drv, netdev, "link query timed out, please retry test\n"); 2455 *data = 1; 2456 return *data; 2457 } 2458 2459 if (link_up) 2460 *data = 0; 2461 else 2462 *data = 1; 2463 2464 return *data; 2465 } 2466 2467 static u64 i40e_reg_test(struct net_device *netdev, u64 *data) 2468 { 2469 struct i40e_netdev_priv *np = netdev_priv(netdev); 2470 struct i40e_pf *pf = np->vsi->back; 2471 2472 netif_info(pf, hw, netdev, "register test\n"); 2473 *data = i40e_diag_reg_test(&pf->hw); 2474 2475 return *data; 2476 } 2477 2478 static u64 i40e_eeprom_test(struct net_device *netdev, u64 *data) 2479 { 2480 struct i40e_netdev_priv *np = netdev_priv(netdev); 2481 struct i40e_pf *pf = np->vsi->back; 2482 2483 netif_info(pf, hw, netdev, "eeprom test\n"); 2484 *data = i40e_diag_eeprom_test(&pf->hw); 2485 2486 /* forcebly clear the NVM Update state machine */ 2487 pf->hw.nvmupd_state = I40E_NVMUPD_STATE_INIT; 2488 2489 return *data; 2490 } 2491 2492 static u64 i40e_intr_test(struct net_device *netdev, u64 *data) 2493 { 2494 struct i40e_netdev_priv *np = netdev_priv(netdev); 2495 struct i40e_pf *pf = np->vsi->back; 2496 u16 swc_old = pf->sw_int_count; 2497 2498 netif_info(pf, hw, netdev, "interrupt test\n"); 2499 wr32(&pf->hw, I40E_PFINT_DYN_CTL0, 2500 (I40E_PFINT_DYN_CTL0_INTENA_MASK | 2501 I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK | 2502 I40E_PFINT_DYN_CTL0_ITR_INDX_MASK | 2503 I40E_PFINT_DYN_CTL0_SW_ITR_INDX_ENA_MASK | 2504 I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK)); 2505 usleep_range(1000, 2000); 2506 *data = (swc_old == pf->sw_int_count); 2507 2508 return *data; 2509 } 2510 2511 static inline bool i40e_active_vfs(struct i40e_pf *pf) 2512 { 2513 struct i40e_vf *vfs = pf->vf; 2514 int i; 2515 2516 for (i = 0; i < pf->num_alloc_vfs; i++) 2517 if (test_bit(I40E_VF_STATE_ACTIVE, &vfs[i].vf_states)) 2518 return true; 2519 return false; 2520 } 2521 2522 static inline bool i40e_active_vmdqs(struct i40e_pf *pf) 2523 { 2524 return !!i40e_find_vsi_by_type(pf, I40E_VSI_VMDQ2); 2525 } 2526 2527 static void i40e_diag_test(struct net_device *netdev, 2528 struct ethtool_test *eth_test, u64 *data) 2529 { 2530 struct i40e_netdev_priv *np = netdev_priv(netdev); 2531 bool if_running = netif_running(netdev); 2532 struct i40e_pf *pf = np->vsi->back; 2533 2534 if (eth_test->flags == ETH_TEST_FL_OFFLINE) { 2535 /* Offline tests */ 2536 netif_info(pf, drv, netdev, "offline testing starting\n"); 2537 2538 set_bit(__I40E_TESTING, pf->state); 2539 2540 if (i40e_active_vfs(pf) || i40e_active_vmdqs(pf)) { 2541 dev_warn(&pf->pdev->dev, 2542 "Please take active VFs and Netqueues offline and restart the adapter before running NIC diagnostics\n"); 2543 data[I40E_ETH_TEST_REG] = 1; 2544 data[I40E_ETH_TEST_EEPROM] = 1; 2545 data[I40E_ETH_TEST_INTR] = 1; 2546 data[I40E_ETH_TEST_LINK] = 1; 2547 eth_test->flags |= ETH_TEST_FL_FAILED; 2548 clear_bit(__I40E_TESTING, pf->state); 2549 goto skip_ol_tests; 2550 } 2551 2552 /* If the device is online then take it offline */ 2553 if (if_running) 2554 /* indicate we're in test mode */ 2555 i40e_close(netdev); 2556 else 2557 /* This reset does not affect link - if it is 2558 * changed to a type of reset that does affect 2559 * link then the following link test would have 2560 * to be moved to before the reset 2561 */ 2562 i40e_do_reset(pf, BIT(__I40E_PF_RESET_REQUESTED), true); 2563 2564 if (i40e_link_test(netdev, &data[I40E_ETH_TEST_LINK])) 2565 eth_test->flags |= ETH_TEST_FL_FAILED; 2566 2567 if (i40e_eeprom_test(netdev, &data[I40E_ETH_TEST_EEPROM])) 2568 eth_test->flags |= ETH_TEST_FL_FAILED; 2569 2570 if (i40e_intr_test(netdev, &data[I40E_ETH_TEST_INTR])) 2571 eth_test->flags |= ETH_TEST_FL_FAILED; 2572 2573 /* run reg test last, a reset is required after it */ 2574 if (i40e_reg_test(netdev, &data[I40E_ETH_TEST_REG])) 2575 eth_test->flags |= ETH_TEST_FL_FAILED; 2576 2577 clear_bit(__I40E_TESTING, pf->state); 2578 i40e_do_reset(pf, BIT(__I40E_PF_RESET_REQUESTED), true); 2579 2580 if (if_running) 2581 i40e_open(netdev); 2582 } else { 2583 /* Online tests */ 2584 netif_info(pf, drv, netdev, "online testing starting\n"); 2585 2586 if (i40e_link_test(netdev, &data[I40E_ETH_TEST_LINK])) 2587 eth_test->flags |= ETH_TEST_FL_FAILED; 2588 2589 /* Offline only tests, not run in online; pass by default */ 2590 data[I40E_ETH_TEST_REG] = 0; 2591 data[I40E_ETH_TEST_EEPROM] = 0; 2592 data[I40E_ETH_TEST_INTR] = 0; 2593 } 2594 2595 skip_ol_tests: 2596 2597 netif_info(pf, drv, netdev, "testing finished\n"); 2598 } 2599 2600 static void i40e_get_wol(struct net_device *netdev, 2601 struct ethtool_wolinfo *wol) 2602 { 2603 struct i40e_netdev_priv *np = netdev_priv(netdev); 2604 struct i40e_pf *pf = np->vsi->back; 2605 struct i40e_hw *hw = &pf->hw; 2606 u16 wol_nvm_bits; 2607 2608 /* NVM bit on means WoL disabled for the port */ 2609 i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits); 2610 if ((BIT(hw->port) & wol_nvm_bits) || (hw->partition_id != 1)) { 2611 wol->supported = 0; 2612 wol->wolopts = 0; 2613 } else { 2614 wol->supported = WAKE_MAGIC; 2615 wol->wolopts = (pf->wol_en ? WAKE_MAGIC : 0); 2616 } 2617 } 2618 2619 /** 2620 * i40e_set_wol - set the WakeOnLAN configuration 2621 * @netdev: the netdev in question 2622 * @wol: the ethtool WoL setting data 2623 **/ 2624 static int i40e_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol) 2625 { 2626 struct i40e_netdev_priv *np = netdev_priv(netdev); 2627 struct i40e_pf *pf = np->vsi->back; 2628 struct i40e_vsi *vsi = np->vsi; 2629 struct i40e_hw *hw = &pf->hw; 2630 u16 wol_nvm_bits; 2631 2632 /* WoL not supported if this isn't the controlling PF on the port */ 2633 if (hw->partition_id != 1) { 2634 i40e_partition_setting_complaint(pf); 2635 return -EOPNOTSUPP; 2636 } 2637 2638 if (vsi != pf->vsi[pf->lan_vsi]) 2639 return -EOPNOTSUPP; 2640 2641 /* NVM bit on means WoL disabled for the port */ 2642 i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits); 2643 if (BIT(hw->port) & wol_nvm_bits) 2644 return -EOPNOTSUPP; 2645 2646 /* only magic packet is supported */ 2647 if (wol->wolopts & ~WAKE_MAGIC) 2648 return -EOPNOTSUPP; 2649 2650 /* is this a new value? */ 2651 if (pf->wol_en != !!wol->wolopts) { 2652 pf->wol_en = !!wol->wolopts; 2653 device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en); 2654 } 2655 2656 return 0; 2657 } 2658 2659 static int i40e_set_phys_id(struct net_device *netdev, 2660 enum ethtool_phys_id_state state) 2661 { 2662 struct i40e_netdev_priv *np = netdev_priv(netdev); 2663 i40e_status ret = 0; 2664 struct i40e_pf *pf = np->vsi->back; 2665 struct i40e_hw *hw = &pf->hw; 2666 int blink_freq = 2; 2667 u16 temp_status; 2668 2669 switch (state) { 2670 case ETHTOOL_ID_ACTIVE: 2671 if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS)) { 2672 pf->led_status = i40e_led_get(hw); 2673 } else { 2674 if (!(hw->flags & I40E_HW_FLAG_AQ_PHY_ACCESS_CAPABLE)) 2675 i40e_aq_set_phy_debug(hw, I40E_PHY_DEBUG_ALL, 2676 NULL); 2677 ret = i40e_led_get_phy(hw, &temp_status, 2678 &pf->phy_led_val); 2679 pf->led_status = temp_status; 2680 } 2681 return blink_freq; 2682 case ETHTOOL_ID_ON: 2683 if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS)) 2684 i40e_led_set(hw, 0xf, false); 2685 else 2686 ret = i40e_led_set_phy(hw, true, pf->led_status, 0); 2687 break; 2688 case ETHTOOL_ID_OFF: 2689 if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS)) 2690 i40e_led_set(hw, 0x0, false); 2691 else 2692 ret = i40e_led_set_phy(hw, false, pf->led_status, 0); 2693 break; 2694 case ETHTOOL_ID_INACTIVE: 2695 if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS)) { 2696 i40e_led_set(hw, pf->led_status, false); 2697 } else { 2698 ret = i40e_led_set_phy(hw, false, pf->led_status, 2699 (pf->phy_led_val | 2700 I40E_PHY_LED_MODE_ORIG)); 2701 if (!(hw->flags & I40E_HW_FLAG_AQ_PHY_ACCESS_CAPABLE)) 2702 i40e_aq_set_phy_debug(hw, 0, NULL); 2703 } 2704 break; 2705 default: 2706 break; 2707 } 2708 if (ret) 2709 return -ENOENT; 2710 else 2711 return 0; 2712 } 2713 2714 /* NOTE: i40e hardware uses a conversion factor of 2 for Interrupt 2715 * Throttle Rate (ITR) ie. ITR(1) = 2us ITR(10) = 20 us, and also 2716 * 125us (8000 interrupts per second) == ITR(62) 2717 */ 2718 2719 /** 2720 * __i40e_get_coalesce - get per-queue coalesce settings 2721 * @netdev: the netdev to check 2722 * @ec: ethtool coalesce data structure 2723 * @queue: which queue to pick 2724 * 2725 * Gets the per-queue settings for coalescence. Specifically Rx and Tx usecs 2726 * are per queue. If queue is <0 then we default to queue 0 as the 2727 * representative value. 2728 **/ 2729 static int __i40e_get_coalesce(struct net_device *netdev, 2730 struct ethtool_coalesce *ec, 2731 int queue) 2732 { 2733 struct i40e_netdev_priv *np = netdev_priv(netdev); 2734 struct i40e_ring *rx_ring, *tx_ring; 2735 struct i40e_vsi *vsi = np->vsi; 2736 2737 ec->tx_max_coalesced_frames_irq = vsi->work_limit; 2738 ec->rx_max_coalesced_frames_irq = vsi->work_limit; 2739 2740 /* rx and tx usecs has per queue value. If user doesn't specify the 2741 * queue, return queue 0's value to represent. 2742 */ 2743 if (queue < 0) 2744 queue = 0; 2745 else if (queue >= vsi->num_queue_pairs) 2746 return -EINVAL; 2747 2748 rx_ring = vsi->rx_rings[queue]; 2749 tx_ring = vsi->tx_rings[queue]; 2750 2751 if (ITR_IS_DYNAMIC(rx_ring->itr_setting)) 2752 ec->use_adaptive_rx_coalesce = 1; 2753 2754 if (ITR_IS_DYNAMIC(tx_ring->itr_setting)) 2755 ec->use_adaptive_tx_coalesce = 1; 2756 2757 ec->rx_coalesce_usecs = rx_ring->itr_setting & ~I40E_ITR_DYNAMIC; 2758 ec->tx_coalesce_usecs = tx_ring->itr_setting & ~I40E_ITR_DYNAMIC; 2759 2760 /* we use the _usecs_high to store/set the interrupt rate limit 2761 * that the hardware supports, that almost but not quite 2762 * fits the original intent of the ethtool variable, 2763 * the rx_coalesce_usecs_high limits total interrupts 2764 * per second from both tx/rx sources. 2765 */ 2766 ec->rx_coalesce_usecs_high = vsi->int_rate_limit; 2767 ec->tx_coalesce_usecs_high = vsi->int_rate_limit; 2768 2769 return 0; 2770 } 2771 2772 /** 2773 * i40e_get_coalesce - get a netdev's coalesce settings 2774 * @netdev: the netdev to check 2775 * @ec: ethtool coalesce data structure 2776 * 2777 * Gets the coalesce settings for a particular netdev. Note that if user has 2778 * modified per-queue settings, this only guarantees to represent queue 0. See 2779 * __i40e_get_coalesce for more details. 2780 **/ 2781 static int i40e_get_coalesce(struct net_device *netdev, 2782 struct ethtool_coalesce *ec) 2783 { 2784 return __i40e_get_coalesce(netdev, ec, -1); 2785 } 2786 2787 /** 2788 * i40e_get_per_queue_coalesce - gets coalesce settings for particular queue 2789 * @netdev: netdev structure 2790 * @ec: ethtool's coalesce settings 2791 * @queue: the particular queue to read 2792 * 2793 * Will read a specific queue's coalesce settings 2794 **/ 2795 static int i40e_get_per_queue_coalesce(struct net_device *netdev, u32 queue, 2796 struct ethtool_coalesce *ec) 2797 { 2798 return __i40e_get_coalesce(netdev, ec, queue); 2799 } 2800 2801 /** 2802 * i40e_set_itr_per_queue - set ITR values for specific queue 2803 * @vsi: the VSI to set values for 2804 * @ec: coalesce settings from ethtool 2805 * @queue: the queue to modify 2806 * 2807 * Change the ITR settings for a specific queue. 2808 **/ 2809 static void i40e_set_itr_per_queue(struct i40e_vsi *vsi, 2810 struct ethtool_coalesce *ec, 2811 int queue) 2812 { 2813 struct i40e_ring *rx_ring = vsi->rx_rings[queue]; 2814 struct i40e_ring *tx_ring = vsi->tx_rings[queue]; 2815 struct i40e_pf *pf = vsi->back; 2816 struct i40e_hw *hw = &pf->hw; 2817 struct i40e_q_vector *q_vector; 2818 u16 intrl; 2819 2820 intrl = i40e_intrl_usec_to_reg(vsi->int_rate_limit); 2821 2822 rx_ring->itr_setting = ITR_REG_ALIGN(ec->rx_coalesce_usecs); 2823 tx_ring->itr_setting = ITR_REG_ALIGN(ec->tx_coalesce_usecs); 2824 2825 if (ec->use_adaptive_rx_coalesce) 2826 rx_ring->itr_setting |= I40E_ITR_DYNAMIC; 2827 else 2828 rx_ring->itr_setting &= ~I40E_ITR_DYNAMIC; 2829 2830 if (ec->use_adaptive_tx_coalesce) 2831 tx_ring->itr_setting |= I40E_ITR_DYNAMIC; 2832 else 2833 tx_ring->itr_setting &= ~I40E_ITR_DYNAMIC; 2834 2835 q_vector = rx_ring->q_vector; 2836 q_vector->rx.target_itr = ITR_TO_REG(rx_ring->itr_setting); 2837 2838 q_vector = tx_ring->q_vector; 2839 q_vector->tx.target_itr = ITR_TO_REG(tx_ring->itr_setting); 2840 2841 /* The interrupt handler itself will take care of programming 2842 * the Tx and Rx ITR values based on the values we have entered 2843 * into the q_vector, no need to write the values now. 2844 */ 2845 2846 wr32(hw, I40E_PFINT_RATEN(q_vector->reg_idx), intrl); 2847 i40e_flush(hw); 2848 } 2849 2850 /** 2851 * __i40e_set_coalesce - set coalesce settings for particular queue 2852 * @netdev: the netdev to change 2853 * @ec: ethtool coalesce settings 2854 * @queue: the queue to change 2855 * 2856 * Sets the coalesce settings for a particular queue. 2857 **/ 2858 static int __i40e_set_coalesce(struct net_device *netdev, 2859 struct ethtool_coalesce *ec, 2860 int queue) 2861 { 2862 struct i40e_netdev_priv *np = netdev_priv(netdev); 2863 u16 intrl_reg, cur_rx_itr, cur_tx_itr; 2864 struct i40e_vsi *vsi = np->vsi; 2865 struct i40e_pf *pf = vsi->back; 2866 int i; 2867 2868 if (ec->tx_max_coalesced_frames_irq || ec->rx_max_coalesced_frames_irq) 2869 vsi->work_limit = ec->tx_max_coalesced_frames_irq; 2870 2871 if (queue < 0) { 2872 cur_rx_itr = vsi->rx_rings[0]->itr_setting; 2873 cur_tx_itr = vsi->tx_rings[0]->itr_setting; 2874 } else if (queue < vsi->num_queue_pairs) { 2875 cur_rx_itr = vsi->rx_rings[queue]->itr_setting; 2876 cur_tx_itr = vsi->tx_rings[queue]->itr_setting; 2877 } else { 2878 netif_info(pf, drv, netdev, "Invalid queue value, queue range is 0 - %d\n", 2879 vsi->num_queue_pairs - 1); 2880 return -EINVAL; 2881 } 2882 2883 cur_tx_itr &= ~I40E_ITR_DYNAMIC; 2884 cur_rx_itr &= ~I40E_ITR_DYNAMIC; 2885 2886 /* tx_coalesce_usecs_high is ignored, use rx-usecs-high instead */ 2887 if (ec->tx_coalesce_usecs_high != vsi->int_rate_limit) { 2888 netif_info(pf, drv, netdev, "tx-usecs-high is not used, please program rx-usecs-high\n"); 2889 return -EINVAL; 2890 } 2891 2892 if (ec->rx_coalesce_usecs_high > INTRL_REG_TO_USEC(I40E_MAX_INTRL)) { 2893 netif_info(pf, drv, netdev, "Invalid value, rx-usecs-high range is 0-%lu\n", 2894 INTRL_REG_TO_USEC(I40E_MAX_INTRL)); 2895 return -EINVAL; 2896 } 2897 2898 if (ec->rx_coalesce_usecs != cur_rx_itr && 2899 ec->use_adaptive_rx_coalesce) { 2900 netif_info(pf, drv, netdev, "RX interrupt moderation cannot be changed if adaptive-rx is enabled.\n"); 2901 return -EINVAL; 2902 } 2903 2904 if (ec->rx_coalesce_usecs > I40E_MAX_ITR) { 2905 netif_info(pf, drv, netdev, "Invalid value, rx-usecs range is 0-8160\n"); 2906 return -EINVAL; 2907 } 2908 2909 if (ec->tx_coalesce_usecs != cur_tx_itr && 2910 ec->use_adaptive_tx_coalesce) { 2911 netif_info(pf, drv, netdev, "TX interrupt moderation cannot be changed if adaptive-tx is enabled.\n"); 2912 return -EINVAL; 2913 } 2914 2915 if (ec->tx_coalesce_usecs > I40E_MAX_ITR) { 2916 netif_info(pf, drv, netdev, "Invalid value, tx-usecs range is 0-8160\n"); 2917 return -EINVAL; 2918 } 2919 2920 if (ec->use_adaptive_rx_coalesce && !cur_rx_itr) 2921 ec->rx_coalesce_usecs = I40E_MIN_ITR; 2922 2923 if (ec->use_adaptive_tx_coalesce && !cur_tx_itr) 2924 ec->tx_coalesce_usecs = I40E_MIN_ITR; 2925 2926 intrl_reg = i40e_intrl_usec_to_reg(ec->rx_coalesce_usecs_high); 2927 vsi->int_rate_limit = INTRL_REG_TO_USEC(intrl_reg); 2928 if (vsi->int_rate_limit != ec->rx_coalesce_usecs_high) { 2929 netif_info(pf, drv, netdev, "Interrupt rate limit rounded down to %d\n", 2930 vsi->int_rate_limit); 2931 } 2932 2933 /* rx and tx usecs has per queue value. If user doesn't specify the 2934 * queue, apply to all queues. 2935 */ 2936 if (queue < 0) { 2937 for (i = 0; i < vsi->num_queue_pairs; i++) 2938 i40e_set_itr_per_queue(vsi, ec, i); 2939 } else { 2940 i40e_set_itr_per_queue(vsi, ec, queue); 2941 } 2942 2943 return 0; 2944 } 2945 2946 /** 2947 * i40e_set_coalesce - set coalesce settings for every queue on the netdev 2948 * @netdev: the netdev to change 2949 * @ec: ethtool coalesce settings 2950 * 2951 * This will set each queue to the same coalesce settings. 2952 **/ 2953 static int i40e_set_coalesce(struct net_device *netdev, 2954 struct ethtool_coalesce *ec) 2955 { 2956 return __i40e_set_coalesce(netdev, ec, -1); 2957 } 2958 2959 /** 2960 * i40e_set_per_queue_coalesce - set specific queue's coalesce settings 2961 * @netdev: the netdev to change 2962 * @ec: ethtool's coalesce settings 2963 * @queue: the queue to change 2964 * 2965 * Sets the specified queue's coalesce settings. 2966 **/ 2967 static int i40e_set_per_queue_coalesce(struct net_device *netdev, u32 queue, 2968 struct ethtool_coalesce *ec) 2969 { 2970 return __i40e_set_coalesce(netdev, ec, queue); 2971 } 2972 2973 /** 2974 * i40e_get_rss_hash_opts - Get RSS hash Input Set for each flow type 2975 * @pf: pointer to the physical function struct 2976 * @cmd: ethtool rxnfc command 2977 * 2978 * Returns Success if the flow is supported, else Invalid Input. 2979 **/ 2980 static int i40e_get_rss_hash_opts(struct i40e_pf *pf, struct ethtool_rxnfc *cmd) 2981 { 2982 struct i40e_hw *hw = &pf->hw; 2983 u8 flow_pctype = 0; 2984 u64 i_set = 0; 2985 2986 cmd->data = 0; 2987 2988 switch (cmd->flow_type) { 2989 case TCP_V4_FLOW: 2990 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_TCP; 2991 break; 2992 case UDP_V4_FLOW: 2993 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_UDP; 2994 break; 2995 case TCP_V6_FLOW: 2996 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_TCP; 2997 break; 2998 case UDP_V6_FLOW: 2999 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_UDP; 3000 break; 3001 case SCTP_V4_FLOW: 3002 case AH_ESP_V4_FLOW: 3003 case AH_V4_FLOW: 3004 case ESP_V4_FLOW: 3005 case IPV4_FLOW: 3006 case SCTP_V6_FLOW: 3007 case AH_ESP_V6_FLOW: 3008 case AH_V6_FLOW: 3009 case ESP_V6_FLOW: 3010 case IPV6_FLOW: 3011 /* Default is src/dest for IP, no matter the L4 hashing */ 3012 cmd->data |= RXH_IP_SRC | RXH_IP_DST; 3013 break; 3014 default: 3015 return -EINVAL; 3016 } 3017 3018 /* Read flow based hash input set register */ 3019 if (flow_pctype) { 3020 i_set = (u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(0, 3021 flow_pctype)) | 3022 ((u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(1, 3023 flow_pctype)) << 32); 3024 } 3025 3026 /* Process bits of hash input set */ 3027 if (i_set) { 3028 if (i_set & I40E_L4_SRC_MASK) 3029 cmd->data |= RXH_L4_B_0_1; 3030 if (i_set & I40E_L4_DST_MASK) 3031 cmd->data |= RXH_L4_B_2_3; 3032 3033 if (cmd->flow_type == TCP_V4_FLOW || 3034 cmd->flow_type == UDP_V4_FLOW) { 3035 if (i_set & I40E_L3_SRC_MASK) 3036 cmd->data |= RXH_IP_SRC; 3037 if (i_set & I40E_L3_DST_MASK) 3038 cmd->data |= RXH_IP_DST; 3039 } else if (cmd->flow_type == TCP_V6_FLOW || 3040 cmd->flow_type == UDP_V6_FLOW) { 3041 if (i_set & I40E_L3_V6_SRC_MASK) 3042 cmd->data |= RXH_IP_SRC; 3043 if (i_set & I40E_L3_V6_DST_MASK) 3044 cmd->data |= RXH_IP_DST; 3045 } 3046 } 3047 3048 return 0; 3049 } 3050 3051 /** 3052 * i40e_check_mask - Check whether a mask field is set 3053 * @mask: the full mask value 3054 * @field: mask of the field to check 3055 * 3056 * If the given mask is fully set, return positive value. If the mask for the 3057 * field is fully unset, return zero. Otherwise return a negative error code. 3058 **/ 3059 static int i40e_check_mask(u64 mask, u64 field) 3060 { 3061 u64 value = mask & field; 3062 3063 if (value == field) 3064 return 1; 3065 else if (!value) 3066 return 0; 3067 else 3068 return -1; 3069 } 3070 3071 /** 3072 * i40e_parse_rx_flow_user_data - Deconstruct user-defined data 3073 * @fsp: pointer to rx flow specification 3074 * @data: pointer to userdef data structure for storage 3075 * 3076 * Read the user-defined data and deconstruct the value into a structure. No 3077 * other code should read the user-defined data, so as to ensure that every 3078 * place consistently reads the value correctly. 3079 * 3080 * The user-defined field is a 64bit Big Endian format value, which we 3081 * deconstruct by reading bits or bit fields from it. Single bit flags shall 3082 * be defined starting from the highest bits, while small bit field values 3083 * shall be defined starting from the lowest bits. 3084 * 3085 * Returns 0 if the data is valid, and non-zero if the userdef data is invalid 3086 * and the filter should be rejected. The data structure will always be 3087 * modified even if FLOW_EXT is not set. 3088 * 3089 **/ 3090 static int i40e_parse_rx_flow_user_data(struct ethtool_rx_flow_spec *fsp, 3091 struct i40e_rx_flow_userdef *data) 3092 { 3093 u64 value, mask; 3094 int valid; 3095 3096 /* Zero memory first so it's always consistent. */ 3097 memset(data, 0, sizeof(*data)); 3098 3099 if (!(fsp->flow_type & FLOW_EXT)) 3100 return 0; 3101 3102 value = be64_to_cpu(*((__be64 *)fsp->h_ext.data)); 3103 mask = be64_to_cpu(*((__be64 *)fsp->m_ext.data)); 3104 3105 #define I40E_USERDEF_FLEX_WORD GENMASK_ULL(15, 0) 3106 #define I40E_USERDEF_FLEX_OFFSET GENMASK_ULL(31, 16) 3107 #define I40E_USERDEF_FLEX_FILTER GENMASK_ULL(31, 0) 3108 3109 valid = i40e_check_mask(mask, I40E_USERDEF_FLEX_FILTER); 3110 if (valid < 0) { 3111 return -EINVAL; 3112 } else if (valid) { 3113 data->flex_word = value & I40E_USERDEF_FLEX_WORD; 3114 data->flex_offset = 3115 (value & I40E_USERDEF_FLEX_OFFSET) >> 16; 3116 data->flex_filter = true; 3117 } 3118 3119 return 0; 3120 } 3121 3122 /** 3123 * i40e_fill_rx_flow_user_data - Fill in user-defined data field 3124 * @fsp: pointer to rx_flow specification 3125 * @data: pointer to return userdef data 3126 * 3127 * Reads the userdef data structure and properly fills in the user defined 3128 * fields of the rx_flow_spec. 3129 **/ 3130 static void i40e_fill_rx_flow_user_data(struct ethtool_rx_flow_spec *fsp, 3131 struct i40e_rx_flow_userdef *data) 3132 { 3133 u64 value = 0, mask = 0; 3134 3135 if (data->flex_filter) { 3136 value |= data->flex_word; 3137 value |= (u64)data->flex_offset << 16; 3138 mask |= I40E_USERDEF_FLEX_FILTER; 3139 } 3140 3141 if (value || mask) 3142 fsp->flow_type |= FLOW_EXT; 3143 3144 *((__be64 *)fsp->h_ext.data) = cpu_to_be64(value); 3145 *((__be64 *)fsp->m_ext.data) = cpu_to_be64(mask); 3146 } 3147 3148 /** 3149 * i40e_get_ethtool_fdir_all - Populates the rule count of a command 3150 * @pf: Pointer to the physical function struct 3151 * @cmd: The command to get or set Rx flow classification rules 3152 * @rule_locs: Array of used rule locations 3153 * 3154 * This function populates both the total and actual rule count of 3155 * the ethtool flow classification command 3156 * 3157 * Returns 0 on success or -EMSGSIZE if entry not found 3158 **/ 3159 static int i40e_get_ethtool_fdir_all(struct i40e_pf *pf, 3160 struct ethtool_rxnfc *cmd, 3161 u32 *rule_locs) 3162 { 3163 struct i40e_fdir_filter *rule; 3164 struct hlist_node *node2; 3165 int cnt = 0; 3166 3167 /* report total rule count */ 3168 cmd->data = i40e_get_fd_cnt_all(pf); 3169 3170 hlist_for_each_entry_safe(rule, node2, 3171 &pf->fdir_filter_list, fdir_node) { 3172 if (cnt == cmd->rule_cnt) 3173 return -EMSGSIZE; 3174 3175 rule_locs[cnt] = rule->fd_id; 3176 cnt++; 3177 } 3178 3179 cmd->rule_cnt = cnt; 3180 3181 return 0; 3182 } 3183 3184 /** 3185 * i40e_get_ethtool_fdir_entry - Look up a filter based on Rx flow 3186 * @pf: Pointer to the physical function struct 3187 * @cmd: The command to get or set Rx flow classification rules 3188 * 3189 * This function looks up a filter based on the Rx flow classification 3190 * command and fills the flow spec info for it if found 3191 * 3192 * Returns 0 on success or -EINVAL if filter not found 3193 **/ 3194 static int i40e_get_ethtool_fdir_entry(struct i40e_pf *pf, 3195 struct ethtool_rxnfc *cmd) 3196 { 3197 struct ethtool_rx_flow_spec *fsp = 3198 (struct ethtool_rx_flow_spec *)&cmd->fs; 3199 struct i40e_rx_flow_userdef userdef = {0}; 3200 struct i40e_fdir_filter *rule = NULL; 3201 struct hlist_node *node2; 3202 u64 input_set; 3203 u16 index; 3204 3205 hlist_for_each_entry_safe(rule, node2, 3206 &pf->fdir_filter_list, fdir_node) { 3207 if (fsp->location <= rule->fd_id) 3208 break; 3209 } 3210 3211 if (!rule || fsp->location != rule->fd_id) 3212 return -EINVAL; 3213 3214 fsp->flow_type = rule->flow_type; 3215 if (fsp->flow_type == IP_USER_FLOW) { 3216 fsp->h_u.usr_ip4_spec.ip_ver = ETH_RX_NFC_IP4; 3217 fsp->h_u.usr_ip4_spec.proto = 0; 3218 fsp->m_u.usr_ip4_spec.proto = 0; 3219 } 3220 3221 /* Reverse the src and dest notion, since the HW views them from 3222 * Tx perspective where as the user expects it from Rx filter view. 3223 */ 3224 fsp->h_u.tcp_ip4_spec.psrc = rule->dst_port; 3225 fsp->h_u.tcp_ip4_spec.pdst = rule->src_port; 3226 fsp->h_u.tcp_ip4_spec.ip4src = rule->dst_ip; 3227 fsp->h_u.tcp_ip4_spec.ip4dst = rule->src_ip; 3228 3229 switch (rule->flow_type) { 3230 case SCTP_V4_FLOW: 3231 index = I40E_FILTER_PCTYPE_NONF_IPV4_SCTP; 3232 break; 3233 case TCP_V4_FLOW: 3234 index = I40E_FILTER_PCTYPE_NONF_IPV4_TCP; 3235 break; 3236 case UDP_V4_FLOW: 3237 index = I40E_FILTER_PCTYPE_NONF_IPV4_UDP; 3238 break; 3239 case IP_USER_FLOW: 3240 index = I40E_FILTER_PCTYPE_NONF_IPV4_OTHER; 3241 break; 3242 default: 3243 /* If we have stored a filter with a flow type not listed here 3244 * it is almost certainly a driver bug. WARN(), and then 3245 * assign the input_set as if all fields are enabled to avoid 3246 * reading unassigned memory. 3247 */ 3248 WARN(1, "Missing input set index for flow_type %d\n", 3249 rule->flow_type); 3250 input_set = 0xFFFFFFFFFFFFFFFFULL; 3251 goto no_input_set; 3252 } 3253 3254 input_set = i40e_read_fd_input_set(pf, index); 3255 3256 no_input_set: 3257 if (input_set & I40E_L3_SRC_MASK) 3258 fsp->m_u.tcp_ip4_spec.ip4src = htonl(0xFFFFFFFF); 3259 3260 if (input_set & I40E_L3_DST_MASK) 3261 fsp->m_u.tcp_ip4_spec.ip4dst = htonl(0xFFFFFFFF); 3262 3263 if (input_set & I40E_L4_SRC_MASK) 3264 fsp->m_u.tcp_ip4_spec.psrc = htons(0xFFFF); 3265 3266 if (input_set & I40E_L4_DST_MASK) 3267 fsp->m_u.tcp_ip4_spec.pdst = htons(0xFFFF); 3268 3269 if (rule->dest_ctl == I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET) 3270 fsp->ring_cookie = RX_CLS_FLOW_DISC; 3271 else 3272 fsp->ring_cookie = rule->q_index; 3273 3274 if (rule->dest_vsi != pf->vsi[pf->lan_vsi]->id) { 3275 struct i40e_vsi *vsi; 3276 3277 vsi = i40e_find_vsi_from_id(pf, rule->dest_vsi); 3278 if (vsi && vsi->type == I40E_VSI_SRIOV) { 3279 /* VFs are zero-indexed by the driver, but ethtool 3280 * expects them to be one-indexed, so add one here 3281 */ 3282 u64 ring_vf = vsi->vf_id + 1; 3283 3284 ring_vf <<= ETHTOOL_RX_FLOW_SPEC_RING_VF_OFF; 3285 fsp->ring_cookie |= ring_vf; 3286 } 3287 } 3288 3289 if (rule->flex_filter) { 3290 userdef.flex_filter = true; 3291 userdef.flex_word = be16_to_cpu(rule->flex_word); 3292 userdef.flex_offset = rule->flex_offset; 3293 } 3294 3295 i40e_fill_rx_flow_user_data(fsp, &userdef); 3296 3297 return 0; 3298 } 3299 3300 /** 3301 * i40e_get_rxnfc - command to get RX flow classification rules 3302 * @netdev: network interface device structure 3303 * @cmd: ethtool rxnfc command 3304 * @rule_locs: pointer to store rule data 3305 * 3306 * Returns Success if the command is supported. 3307 **/ 3308 static int i40e_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd, 3309 u32 *rule_locs) 3310 { 3311 struct i40e_netdev_priv *np = netdev_priv(netdev); 3312 struct i40e_vsi *vsi = np->vsi; 3313 struct i40e_pf *pf = vsi->back; 3314 int ret = -EOPNOTSUPP; 3315 3316 switch (cmd->cmd) { 3317 case ETHTOOL_GRXRINGS: 3318 cmd->data = vsi->rss_size; 3319 ret = 0; 3320 break; 3321 case ETHTOOL_GRXFH: 3322 ret = i40e_get_rss_hash_opts(pf, cmd); 3323 break; 3324 case ETHTOOL_GRXCLSRLCNT: 3325 cmd->rule_cnt = pf->fdir_pf_active_filters; 3326 /* report total rule count */ 3327 cmd->data = i40e_get_fd_cnt_all(pf); 3328 ret = 0; 3329 break; 3330 case ETHTOOL_GRXCLSRULE: 3331 ret = i40e_get_ethtool_fdir_entry(pf, cmd); 3332 break; 3333 case ETHTOOL_GRXCLSRLALL: 3334 ret = i40e_get_ethtool_fdir_all(pf, cmd, rule_locs); 3335 break; 3336 default: 3337 break; 3338 } 3339 3340 return ret; 3341 } 3342 3343 /** 3344 * i40e_get_rss_hash_bits - Read RSS Hash bits from register 3345 * @nfc: pointer to user request 3346 * @i_setc: bits currently set 3347 * 3348 * Returns value of bits to be set per user request 3349 **/ 3350 static u64 i40e_get_rss_hash_bits(struct ethtool_rxnfc *nfc, u64 i_setc) 3351 { 3352 u64 i_set = i_setc; 3353 u64 src_l3 = 0, dst_l3 = 0; 3354 3355 if (nfc->data & RXH_L4_B_0_1) 3356 i_set |= I40E_L4_SRC_MASK; 3357 else 3358 i_set &= ~I40E_L4_SRC_MASK; 3359 if (nfc->data & RXH_L4_B_2_3) 3360 i_set |= I40E_L4_DST_MASK; 3361 else 3362 i_set &= ~I40E_L4_DST_MASK; 3363 3364 if (nfc->flow_type == TCP_V6_FLOW || nfc->flow_type == UDP_V6_FLOW) { 3365 src_l3 = I40E_L3_V6_SRC_MASK; 3366 dst_l3 = I40E_L3_V6_DST_MASK; 3367 } else if (nfc->flow_type == TCP_V4_FLOW || 3368 nfc->flow_type == UDP_V4_FLOW) { 3369 src_l3 = I40E_L3_SRC_MASK; 3370 dst_l3 = I40E_L3_DST_MASK; 3371 } else { 3372 /* Any other flow type are not supported here */ 3373 return i_set; 3374 } 3375 3376 if (nfc->data & RXH_IP_SRC) 3377 i_set |= src_l3; 3378 else 3379 i_set &= ~src_l3; 3380 if (nfc->data & RXH_IP_DST) 3381 i_set |= dst_l3; 3382 else 3383 i_set &= ~dst_l3; 3384 3385 return i_set; 3386 } 3387 3388 /** 3389 * i40e_set_rss_hash_opt - Enable/Disable flow types for RSS hash 3390 * @pf: pointer to the physical function struct 3391 * @nfc: ethtool rxnfc command 3392 * 3393 * Returns Success if the flow input set is supported. 3394 **/ 3395 static int i40e_set_rss_hash_opt(struct i40e_pf *pf, struct ethtool_rxnfc *nfc) 3396 { 3397 struct i40e_hw *hw = &pf->hw; 3398 u64 hena = (u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(0)) | 3399 ((u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(1)) << 32); 3400 u8 flow_pctype = 0; 3401 u64 i_set, i_setc; 3402 3403 if (pf->flags & I40E_FLAG_MFP_ENABLED) { 3404 dev_err(&pf->pdev->dev, 3405 "Change of RSS hash input set is not supported when MFP mode is enabled\n"); 3406 return -EOPNOTSUPP; 3407 } 3408 3409 /* RSS does not support anything other than hashing 3410 * to queues on src and dst IPs and ports 3411 */ 3412 if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST | 3413 RXH_L4_B_0_1 | RXH_L4_B_2_3)) 3414 return -EINVAL; 3415 3416 switch (nfc->flow_type) { 3417 case TCP_V4_FLOW: 3418 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_TCP; 3419 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE) 3420 hena |= 3421 BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_TCP_SYN_NO_ACK); 3422 break; 3423 case TCP_V6_FLOW: 3424 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_TCP; 3425 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE) 3426 hena |= 3427 BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_TCP_SYN_NO_ACK); 3428 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE) 3429 hena |= 3430 BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_TCP_SYN_NO_ACK); 3431 break; 3432 case UDP_V4_FLOW: 3433 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_UDP; 3434 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE) 3435 hena |= 3436 BIT_ULL(I40E_FILTER_PCTYPE_NONF_UNICAST_IPV4_UDP) | 3437 BIT_ULL(I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV4_UDP); 3438 3439 hena |= BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV4); 3440 break; 3441 case UDP_V6_FLOW: 3442 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_UDP; 3443 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE) 3444 hena |= 3445 BIT_ULL(I40E_FILTER_PCTYPE_NONF_UNICAST_IPV6_UDP) | 3446 BIT_ULL(I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV6_UDP); 3447 3448 hena |= BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV6); 3449 break; 3450 case AH_ESP_V4_FLOW: 3451 case AH_V4_FLOW: 3452 case ESP_V4_FLOW: 3453 case SCTP_V4_FLOW: 3454 if ((nfc->data & RXH_L4_B_0_1) || 3455 (nfc->data & RXH_L4_B_2_3)) 3456 return -EINVAL; 3457 hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_OTHER); 3458 break; 3459 case AH_ESP_V6_FLOW: 3460 case AH_V6_FLOW: 3461 case ESP_V6_FLOW: 3462 case SCTP_V6_FLOW: 3463 if ((nfc->data & RXH_L4_B_0_1) || 3464 (nfc->data & RXH_L4_B_2_3)) 3465 return -EINVAL; 3466 hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_OTHER); 3467 break; 3468 case IPV4_FLOW: 3469 hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_OTHER) | 3470 BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV4); 3471 break; 3472 case IPV6_FLOW: 3473 hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_OTHER) | 3474 BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV6); 3475 break; 3476 default: 3477 return -EINVAL; 3478 } 3479 3480 if (flow_pctype) { 3481 i_setc = (u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(0, 3482 flow_pctype)) | 3483 ((u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(1, 3484 flow_pctype)) << 32); 3485 i_set = i40e_get_rss_hash_bits(nfc, i_setc); 3486 i40e_write_rx_ctl(hw, I40E_GLQF_HASH_INSET(0, flow_pctype), 3487 (u32)i_set); 3488 i40e_write_rx_ctl(hw, I40E_GLQF_HASH_INSET(1, flow_pctype), 3489 (u32)(i_set >> 32)); 3490 hena |= BIT_ULL(flow_pctype); 3491 } 3492 3493 i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), (u32)hena); 3494 i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32)); 3495 i40e_flush(hw); 3496 3497 return 0; 3498 } 3499 3500 /** 3501 * i40e_update_ethtool_fdir_entry - Updates the fdir filter entry 3502 * @vsi: Pointer to the targeted VSI 3503 * @input: The filter to update or NULL to indicate deletion 3504 * @sw_idx: Software index to the filter 3505 * @cmd: The command to get or set Rx flow classification rules 3506 * 3507 * This function updates (or deletes) a Flow Director entry from 3508 * the hlist of the corresponding PF 3509 * 3510 * Returns 0 on success 3511 **/ 3512 static int i40e_update_ethtool_fdir_entry(struct i40e_vsi *vsi, 3513 struct i40e_fdir_filter *input, 3514 u16 sw_idx, 3515 struct ethtool_rxnfc *cmd) 3516 { 3517 struct i40e_fdir_filter *rule, *parent; 3518 struct i40e_pf *pf = vsi->back; 3519 struct hlist_node *node2; 3520 int err = -EINVAL; 3521 3522 parent = NULL; 3523 rule = NULL; 3524 3525 hlist_for_each_entry_safe(rule, node2, 3526 &pf->fdir_filter_list, fdir_node) { 3527 /* hash found, or no matching entry */ 3528 if (rule->fd_id >= sw_idx) 3529 break; 3530 parent = rule; 3531 } 3532 3533 /* if there is an old rule occupying our place remove it */ 3534 if (rule && (rule->fd_id == sw_idx)) { 3535 /* Remove this rule, since we're either deleting it, or 3536 * replacing it. 3537 */ 3538 err = i40e_add_del_fdir(vsi, rule, false); 3539 hlist_del(&rule->fdir_node); 3540 kfree(rule); 3541 pf->fdir_pf_active_filters--; 3542 } 3543 3544 /* If we weren't given an input, this is a delete, so just return the 3545 * error code indicating if there was an entry at the requested slot 3546 */ 3547 if (!input) 3548 return err; 3549 3550 /* Otherwise, install the new rule as requested */ 3551 INIT_HLIST_NODE(&input->fdir_node); 3552 3553 /* add filter to the list */ 3554 if (parent) 3555 hlist_add_behind(&input->fdir_node, &parent->fdir_node); 3556 else 3557 hlist_add_head(&input->fdir_node, 3558 &pf->fdir_filter_list); 3559 3560 /* update counts */ 3561 pf->fdir_pf_active_filters++; 3562 3563 return 0; 3564 } 3565 3566 /** 3567 * i40e_prune_flex_pit_list - Cleanup unused entries in FLX_PIT table 3568 * @pf: pointer to PF structure 3569 * 3570 * This function searches the list of filters and determines which FLX_PIT 3571 * entries are still required. It will prune any entries which are no longer 3572 * in use after the deletion. 3573 **/ 3574 static void i40e_prune_flex_pit_list(struct i40e_pf *pf) 3575 { 3576 struct i40e_flex_pit *entry, *tmp; 3577 struct i40e_fdir_filter *rule; 3578 3579 /* First, we'll check the l3 table */ 3580 list_for_each_entry_safe(entry, tmp, &pf->l3_flex_pit_list, list) { 3581 bool found = false; 3582 3583 hlist_for_each_entry(rule, &pf->fdir_filter_list, fdir_node) { 3584 if (rule->flow_type != IP_USER_FLOW) 3585 continue; 3586 if (rule->flex_filter && 3587 rule->flex_offset == entry->src_offset) { 3588 found = true; 3589 break; 3590 } 3591 } 3592 3593 /* If we didn't find the filter, then we can prune this entry 3594 * from the list. 3595 */ 3596 if (!found) { 3597 list_del(&entry->list); 3598 kfree(entry); 3599 } 3600 } 3601 3602 /* Followed by the L4 table */ 3603 list_for_each_entry_safe(entry, tmp, &pf->l4_flex_pit_list, list) { 3604 bool found = false; 3605 3606 hlist_for_each_entry(rule, &pf->fdir_filter_list, fdir_node) { 3607 /* Skip this filter if it's L3, since we already 3608 * checked those in the above loop 3609 */ 3610 if (rule->flow_type == IP_USER_FLOW) 3611 continue; 3612 if (rule->flex_filter && 3613 rule->flex_offset == entry->src_offset) { 3614 found = true; 3615 break; 3616 } 3617 } 3618 3619 /* If we didn't find the filter, then we can prune this entry 3620 * from the list. 3621 */ 3622 if (!found) { 3623 list_del(&entry->list); 3624 kfree(entry); 3625 } 3626 } 3627 } 3628 3629 /** 3630 * i40e_del_fdir_entry - Deletes a Flow Director filter entry 3631 * @vsi: Pointer to the targeted VSI 3632 * @cmd: The command to get or set Rx flow classification rules 3633 * 3634 * The function removes a Flow Director filter entry from the 3635 * hlist of the corresponding PF 3636 * 3637 * Returns 0 on success 3638 */ 3639 static int i40e_del_fdir_entry(struct i40e_vsi *vsi, 3640 struct ethtool_rxnfc *cmd) 3641 { 3642 struct ethtool_rx_flow_spec *fsp = 3643 (struct ethtool_rx_flow_spec *)&cmd->fs; 3644 struct i40e_pf *pf = vsi->back; 3645 int ret = 0; 3646 3647 if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) || 3648 test_bit(__I40E_RESET_INTR_RECEIVED, pf->state)) 3649 return -EBUSY; 3650 3651 if (test_bit(__I40E_FD_FLUSH_REQUESTED, pf->state)) 3652 return -EBUSY; 3653 3654 ret = i40e_update_ethtool_fdir_entry(vsi, NULL, fsp->location, cmd); 3655 3656 i40e_prune_flex_pit_list(pf); 3657 3658 i40e_fdir_check_and_reenable(pf); 3659 return ret; 3660 } 3661 3662 /** 3663 * i40e_unused_pit_index - Find an unused PIT index for given list 3664 * @pf: the PF data structure 3665 * 3666 * Find the first unused flexible PIT index entry. We search both the L3 and 3667 * L4 flexible PIT lists so that the returned index is unique and unused by 3668 * either currently programmed L3 or L4 filters. We use a bit field as storage 3669 * to track which indexes are already used. 3670 **/ 3671 static u8 i40e_unused_pit_index(struct i40e_pf *pf) 3672 { 3673 unsigned long available_index = 0xFF; 3674 struct i40e_flex_pit *entry; 3675 3676 /* We need to make sure that the new index isn't in use by either L3 3677 * or L4 filters so that IP_USER_FLOW filters can program both L3 and 3678 * L4 to use the same index. 3679 */ 3680 3681 list_for_each_entry(entry, &pf->l4_flex_pit_list, list) 3682 clear_bit(entry->pit_index, &available_index); 3683 3684 list_for_each_entry(entry, &pf->l3_flex_pit_list, list) 3685 clear_bit(entry->pit_index, &available_index); 3686 3687 return find_first_bit(&available_index, 8); 3688 } 3689 3690 /** 3691 * i40e_find_flex_offset - Find an existing flex src_offset 3692 * @flex_pit_list: L3 or L4 flex PIT list 3693 * @src_offset: new src_offset to find 3694 * 3695 * Searches the flex_pit_list for an existing offset. If no offset is 3696 * currently programmed, then this will return an ERR_PTR if there is no space 3697 * to add a new offset, otherwise it returns NULL. 3698 **/ 3699 static 3700 struct i40e_flex_pit *i40e_find_flex_offset(struct list_head *flex_pit_list, 3701 u16 src_offset) 3702 { 3703 struct i40e_flex_pit *entry; 3704 int size = 0; 3705 3706 /* Search for the src_offset first. If we find a matching entry 3707 * already programmed, we can simply re-use it. 3708 */ 3709 list_for_each_entry(entry, flex_pit_list, list) { 3710 size++; 3711 if (entry->src_offset == src_offset) 3712 return entry; 3713 } 3714 3715 /* If we haven't found an entry yet, then the provided src offset has 3716 * not yet been programmed. We will program the src offset later on, 3717 * but we need to indicate whether there is enough space to do so 3718 * here. We'll make use of ERR_PTR for this purpose. 3719 */ 3720 if (size >= I40E_FLEX_PIT_TABLE_SIZE) 3721 return ERR_PTR(-ENOSPC); 3722 3723 return NULL; 3724 } 3725 3726 /** 3727 * i40e_add_flex_offset - Add src_offset to flex PIT table list 3728 * @flex_pit_list: L3 or L4 flex PIT list 3729 * @src_offset: new src_offset to add 3730 * @pit_index: the PIT index to program 3731 * 3732 * This function programs the new src_offset to the list. It is expected that 3733 * i40e_find_flex_offset has already been tried and returned NULL, indicating 3734 * that this offset is not programmed, and that the list has enough space to 3735 * store another offset. 3736 * 3737 * Returns 0 on success, and negative value on error. 3738 **/ 3739 static int i40e_add_flex_offset(struct list_head *flex_pit_list, 3740 u16 src_offset, 3741 u8 pit_index) 3742 { 3743 struct i40e_flex_pit *new_pit, *entry; 3744 3745 new_pit = kzalloc(sizeof(*entry), GFP_KERNEL); 3746 if (!new_pit) 3747 return -ENOMEM; 3748 3749 new_pit->src_offset = src_offset; 3750 new_pit->pit_index = pit_index; 3751 3752 /* We need to insert this item such that the list is sorted by 3753 * src_offset in ascending order. 3754 */ 3755 list_for_each_entry(entry, flex_pit_list, list) { 3756 if (new_pit->src_offset < entry->src_offset) { 3757 list_add_tail(&new_pit->list, &entry->list); 3758 return 0; 3759 } 3760 3761 /* If we found an entry with our offset already programmed we 3762 * can simply return here, after freeing the memory. However, 3763 * if the pit_index does not match we need to report an error. 3764 */ 3765 if (new_pit->src_offset == entry->src_offset) { 3766 int err = 0; 3767 3768 /* If the PIT index is not the same we can't re-use 3769 * the entry, so we must report an error. 3770 */ 3771 if (new_pit->pit_index != entry->pit_index) 3772 err = -EINVAL; 3773 3774 kfree(new_pit); 3775 return err; 3776 } 3777 } 3778 3779 /* If we reached here, then we haven't yet added the item. This means 3780 * that we should add the item at the end of the list. 3781 */ 3782 list_add_tail(&new_pit->list, flex_pit_list); 3783 return 0; 3784 } 3785 3786 /** 3787 * __i40e_reprogram_flex_pit - Re-program specific FLX_PIT table 3788 * @pf: Pointer to the PF structure 3789 * @flex_pit_list: list of flexible src offsets in use 3790 * @flex_pit_start: index to first entry for this section of the table 3791 * 3792 * In order to handle flexible data, the hardware uses a table of values 3793 * called the FLX_PIT table. This table is used to indicate which sections of 3794 * the input correspond to what PIT index values. Unfortunately, hardware is 3795 * very restrictive about programming this table. Entries must be ordered by 3796 * src_offset in ascending order, without duplicates. Additionally, unused 3797 * entries must be set to the unused index value, and must have valid size and 3798 * length according to the src_offset ordering. 3799 * 3800 * This function will reprogram the FLX_PIT register from a book-keeping 3801 * structure that we guarantee is already ordered correctly, and has no more 3802 * than 3 entries. 3803 * 3804 * To make things easier, we only support flexible values of one word length, 3805 * rather than allowing variable length flexible values. 3806 **/ 3807 static void __i40e_reprogram_flex_pit(struct i40e_pf *pf, 3808 struct list_head *flex_pit_list, 3809 int flex_pit_start) 3810 { 3811 struct i40e_flex_pit *entry = NULL; 3812 u16 last_offset = 0; 3813 int i = 0, j = 0; 3814 3815 /* First, loop over the list of flex PIT entries, and reprogram the 3816 * registers. 3817 */ 3818 list_for_each_entry(entry, flex_pit_list, list) { 3819 /* We have to be careful when programming values for the 3820 * largest SRC_OFFSET value. It is possible that adding 3821 * additional empty values at the end would overflow the space 3822 * for the SRC_OFFSET in the FLX_PIT register. To avoid this, 3823 * we check here and add the empty values prior to adding the 3824 * largest value. 3825 * 3826 * To determine this, we will use a loop from i+1 to 3, which 3827 * will determine whether the unused entries would have valid 3828 * SRC_OFFSET. Note that there cannot be extra entries past 3829 * this value, because the only valid values would have been 3830 * larger than I40E_MAX_FLEX_SRC_OFFSET, and thus would not 3831 * have been added to the list in the first place. 3832 */ 3833 for (j = i + 1; j < 3; j++) { 3834 u16 offset = entry->src_offset + j; 3835 int index = flex_pit_start + i; 3836 u32 value = I40E_FLEX_PREP_VAL(I40E_FLEX_DEST_UNUSED, 3837 1, 3838 offset - 3); 3839 3840 if (offset > I40E_MAX_FLEX_SRC_OFFSET) { 3841 i40e_write_rx_ctl(&pf->hw, 3842 I40E_PRTQF_FLX_PIT(index), 3843 value); 3844 i++; 3845 } 3846 } 3847 3848 /* Now, we can program the actual value into the table */ 3849 i40e_write_rx_ctl(&pf->hw, 3850 I40E_PRTQF_FLX_PIT(flex_pit_start + i), 3851 I40E_FLEX_PREP_VAL(entry->pit_index + 50, 3852 1, 3853 entry->src_offset)); 3854 i++; 3855 } 3856 3857 /* In order to program the last entries in the table, we need to 3858 * determine the valid offset. If the list is empty, we'll just start 3859 * with 0. Otherwise, we'll start with the last item offset and add 1. 3860 * This ensures that all entries have valid sizes. If we don't do this 3861 * correctly, the hardware will disable flexible field parsing. 3862 */ 3863 if (!list_empty(flex_pit_list)) 3864 last_offset = list_prev_entry(entry, list)->src_offset + 1; 3865 3866 for (; i < 3; i++, last_offset++) { 3867 i40e_write_rx_ctl(&pf->hw, 3868 I40E_PRTQF_FLX_PIT(flex_pit_start + i), 3869 I40E_FLEX_PREP_VAL(I40E_FLEX_DEST_UNUSED, 3870 1, 3871 last_offset)); 3872 } 3873 } 3874 3875 /** 3876 * i40e_reprogram_flex_pit - Reprogram all FLX_PIT tables after input set change 3877 * @pf: pointer to the PF structure 3878 * 3879 * This function reprograms both the L3 and L4 FLX_PIT tables. See the 3880 * internal helper function for implementation details. 3881 **/ 3882 static void i40e_reprogram_flex_pit(struct i40e_pf *pf) 3883 { 3884 __i40e_reprogram_flex_pit(pf, &pf->l3_flex_pit_list, 3885 I40E_FLEX_PIT_IDX_START_L3); 3886 3887 __i40e_reprogram_flex_pit(pf, &pf->l4_flex_pit_list, 3888 I40E_FLEX_PIT_IDX_START_L4); 3889 3890 /* We also need to program the L3 and L4 GLQF ORT register */ 3891 i40e_write_rx_ctl(&pf->hw, 3892 I40E_GLQF_ORT(I40E_L3_GLQF_ORT_IDX), 3893 I40E_ORT_PREP_VAL(I40E_FLEX_PIT_IDX_START_L3, 3894 3, 1)); 3895 3896 i40e_write_rx_ctl(&pf->hw, 3897 I40E_GLQF_ORT(I40E_L4_GLQF_ORT_IDX), 3898 I40E_ORT_PREP_VAL(I40E_FLEX_PIT_IDX_START_L4, 3899 3, 1)); 3900 } 3901 3902 /** 3903 * i40e_flow_str - Converts a flow_type into a human readable string 3904 * @fsp: the flow specification 3905 * 3906 * Currently only flow types we support are included here, and the string 3907 * value attempts to match what ethtool would use to configure this flow type. 3908 **/ 3909 static const char *i40e_flow_str(struct ethtool_rx_flow_spec *fsp) 3910 { 3911 switch (fsp->flow_type & ~FLOW_EXT) { 3912 case TCP_V4_FLOW: 3913 return "tcp4"; 3914 case UDP_V4_FLOW: 3915 return "udp4"; 3916 case SCTP_V4_FLOW: 3917 return "sctp4"; 3918 case IP_USER_FLOW: 3919 return "ip4"; 3920 default: 3921 return "unknown"; 3922 } 3923 } 3924 3925 /** 3926 * i40e_pit_index_to_mask - Return the FLEX mask for a given PIT index 3927 * @pit_index: PIT index to convert 3928 * 3929 * Returns the mask for a given PIT index. Will return 0 if the pit_index is 3930 * of range. 3931 **/ 3932 static u64 i40e_pit_index_to_mask(int pit_index) 3933 { 3934 switch (pit_index) { 3935 case 0: 3936 return I40E_FLEX_50_MASK; 3937 case 1: 3938 return I40E_FLEX_51_MASK; 3939 case 2: 3940 return I40E_FLEX_52_MASK; 3941 case 3: 3942 return I40E_FLEX_53_MASK; 3943 case 4: 3944 return I40E_FLEX_54_MASK; 3945 case 5: 3946 return I40E_FLEX_55_MASK; 3947 case 6: 3948 return I40E_FLEX_56_MASK; 3949 case 7: 3950 return I40E_FLEX_57_MASK; 3951 default: 3952 return 0; 3953 } 3954 } 3955 3956 /** 3957 * i40e_print_input_set - Show changes between two input sets 3958 * @vsi: the vsi being configured 3959 * @old: the old input set 3960 * @new: the new input set 3961 * 3962 * Print the difference between old and new input sets by showing which series 3963 * of words are toggled on or off. Only displays the bits we actually support 3964 * changing. 3965 **/ 3966 static void i40e_print_input_set(struct i40e_vsi *vsi, u64 old, u64 new) 3967 { 3968 struct i40e_pf *pf = vsi->back; 3969 bool old_value, new_value; 3970 int i; 3971 3972 old_value = !!(old & I40E_L3_SRC_MASK); 3973 new_value = !!(new & I40E_L3_SRC_MASK); 3974 if (old_value != new_value) 3975 netif_info(pf, drv, vsi->netdev, "L3 source address: %s -> %s\n", 3976 old_value ? "ON" : "OFF", 3977 new_value ? "ON" : "OFF"); 3978 3979 old_value = !!(old & I40E_L3_DST_MASK); 3980 new_value = !!(new & I40E_L3_DST_MASK); 3981 if (old_value != new_value) 3982 netif_info(pf, drv, vsi->netdev, "L3 destination address: %s -> %s\n", 3983 old_value ? "ON" : "OFF", 3984 new_value ? "ON" : "OFF"); 3985 3986 old_value = !!(old & I40E_L4_SRC_MASK); 3987 new_value = !!(new & I40E_L4_SRC_MASK); 3988 if (old_value != new_value) 3989 netif_info(pf, drv, vsi->netdev, "L4 source port: %s -> %s\n", 3990 old_value ? "ON" : "OFF", 3991 new_value ? "ON" : "OFF"); 3992 3993 old_value = !!(old & I40E_L4_DST_MASK); 3994 new_value = !!(new & I40E_L4_DST_MASK); 3995 if (old_value != new_value) 3996 netif_info(pf, drv, vsi->netdev, "L4 destination port: %s -> %s\n", 3997 old_value ? "ON" : "OFF", 3998 new_value ? "ON" : "OFF"); 3999 4000 old_value = !!(old & I40E_VERIFY_TAG_MASK); 4001 new_value = !!(new & I40E_VERIFY_TAG_MASK); 4002 if (old_value != new_value) 4003 netif_info(pf, drv, vsi->netdev, "SCTP verification tag: %s -> %s\n", 4004 old_value ? "ON" : "OFF", 4005 new_value ? "ON" : "OFF"); 4006 4007 /* Show change of flexible filter entries */ 4008 for (i = 0; i < I40E_FLEX_INDEX_ENTRIES; i++) { 4009 u64 flex_mask = i40e_pit_index_to_mask(i); 4010 4011 old_value = !!(old & flex_mask); 4012 new_value = !!(new & flex_mask); 4013 if (old_value != new_value) 4014 netif_info(pf, drv, vsi->netdev, "FLEX index %d: %s -> %s\n", 4015 i, 4016 old_value ? "ON" : "OFF", 4017 new_value ? "ON" : "OFF"); 4018 } 4019 4020 netif_info(pf, drv, vsi->netdev, " Current input set: %0llx\n", 4021 old); 4022 netif_info(pf, drv, vsi->netdev, "Requested input set: %0llx\n", 4023 new); 4024 } 4025 4026 /** 4027 * i40e_check_fdir_input_set - Check that a given rx_flow_spec mask is valid 4028 * @vsi: pointer to the targeted VSI 4029 * @fsp: pointer to Rx flow specification 4030 * @userdef: userdefined data from flow specification 4031 * 4032 * Ensures that a given ethtool_rx_flow_spec has a valid mask. Some support 4033 * for partial matches exists with a few limitations. First, hardware only 4034 * supports masking by word boundary (2 bytes) and not per individual bit. 4035 * Second, hardware is limited to using one mask for a flow type and cannot 4036 * use a separate mask for each filter. 4037 * 4038 * To support these limitations, if we already have a configured filter for 4039 * the specified type, this function enforces that new filters of the type 4040 * match the configured input set. Otherwise, if we do not have a filter of 4041 * the specified type, we allow the input set to be updated to match the 4042 * desired filter. 4043 * 4044 * To help ensure that administrators understand why filters weren't displayed 4045 * as supported, we print a diagnostic message displaying how the input set 4046 * would change and warning to delete the preexisting filters if required. 4047 * 4048 * Returns 0 on successful input set match, and a negative return code on 4049 * failure. 4050 **/ 4051 static int i40e_check_fdir_input_set(struct i40e_vsi *vsi, 4052 struct ethtool_rx_flow_spec *fsp, 4053 struct i40e_rx_flow_userdef *userdef) 4054 { 4055 struct i40e_pf *pf = vsi->back; 4056 struct ethtool_tcpip4_spec *tcp_ip4_spec; 4057 struct ethtool_usrip4_spec *usr_ip4_spec; 4058 u64 current_mask, new_mask; 4059 bool new_flex_offset = false; 4060 bool flex_l3 = false; 4061 u16 *fdir_filter_count; 4062 u16 index, src_offset = 0; 4063 u8 pit_index = 0; 4064 int err; 4065 4066 switch (fsp->flow_type & ~FLOW_EXT) { 4067 case SCTP_V4_FLOW: 4068 index = I40E_FILTER_PCTYPE_NONF_IPV4_SCTP; 4069 fdir_filter_count = &pf->fd_sctp4_filter_cnt; 4070 break; 4071 case TCP_V4_FLOW: 4072 index = I40E_FILTER_PCTYPE_NONF_IPV4_TCP; 4073 fdir_filter_count = &pf->fd_tcp4_filter_cnt; 4074 break; 4075 case UDP_V4_FLOW: 4076 index = I40E_FILTER_PCTYPE_NONF_IPV4_UDP; 4077 fdir_filter_count = &pf->fd_udp4_filter_cnt; 4078 break; 4079 case IP_USER_FLOW: 4080 index = I40E_FILTER_PCTYPE_NONF_IPV4_OTHER; 4081 fdir_filter_count = &pf->fd_ip4_filter_cnt; 4082 flex_l3 = true; 4083 break; 4084 default: 4085 return -EOPNOTSUPP; 4086 } 4087 4088 /* Read the current input set from register memory. */ 4089 current_mask = i40e_read_fd_input_set(pf, index); 4090 new_mask = current_mask; 4091 4092 /* Determine, if any, the required changes to the input set in order 4093 * to support the provided mask. 4094 * 4095 * Hardware only supports masking at word (2 byte) granularity and does 4096 * not support full bitwise masking. This implementation simplifies 4097 * even further and only supports fully enabled or fully disabled 4098 * masks for each field, even though we could split the ip4src and 4099 * ip4dst fields. 4100 */ 4101 switch (fsp->flow_type & ~FLOW_EXT) { 4102 case SCTP_V4_FLOW: 4103 new_mask &= ~I40E_VERIFY_TAG_MASK; 4104 /* Fall through */ 4105 case TCP_V4_FLOW: 4106 case UDP_V4_FLOW: 4107 tcp_ip4_spec = &fsp->m_u.tcp_ip4_spec; 4108 4109 /* IPv4 source address */ 4110 if (tcp_ip4_spec->ip4src == htonl(0xFFFFFFFF)) 4111 new_mask |= I40E_L3_SRC_MASK; 4112 else if (!tcp_ip4_spec->ip4src) 4113 new_mask &= ~I40E_L3_SRC_MASK; 4114 else 4115 return -EOPNOTSUPP; 4116 4117 /* IPv4 destination address */ 4118 if (tcp_ip4_spec->ip4dst == htonl(0xFFFFFFFF)) 4119 new_mask |= I40E_L3_DST_MASK; 4120 else if (!tcp_ip4_spec->ip4dst) 4121 new_mask &= ~I40E_L3_DST_MASK; 4122 else 4123 return -EOPNOTSUPP; 4124 4125 /* L4 source port */ 4126 if (tcp_ip4_spec->psrc == htons(0xFFFF)) 4127 new_mask |= I40E_L4_SRC_MASK; 4128 else if (!tcp_ip4_spec->psrc) 4129 new_mask &= ~I40E_L4_SRC_MASK; 4130 else 4131 return -EOPNOTSUPP; 4132 4133 /* L4 destination port */ 4134 if (tcp_ip4_spec->pdst == htons(0xFFFF)) 4135 new_mask |= I40E_L4_DST_MASK; 4136 else if (!tcp_ip4_spec->pdst) 4137 new_mask &= ~I40E_L4_DST_MASK; 4138 else 4139 return -EOPNOTSUPP; 4140 4141 /* Filtering on Type of Service is not supported. */ 4142 if (tcp_ip4_spec->tos) 4143 return -EOPNOTSUPP; 4144 4145 break; 4146 case IP_USER_FLOW: 4147 usr_ip4_spec = &fsp->m_u.usr_ip4_spec; 4148 4149 /* IPv4 source address */ 4150 if (usr_ip4_spec->ip4src == htonl(0xFFFFFFFF)) 4151 new_mask |= I40E_L3_SRC_MASK; 4152 else if (!usr_ip4_spec->ip4src) 4153 new_mask &= ~I40E_L3_SRC_MASK; 4154 else 4155 return -EOPNOTSUPP; 4156 4157 /* IPv4 destination address */ 4158 if (usr_ip4_spec->ip4dst == htonl(0xFFFFFFFF)) 4159 new_mask |= I40E_L3_DST_MASK; 4160 else if (!usr_ip4_spec->ip4dst) 4161 new_mask &= ~I40E_L3_DST_MASK; 4162 else 4163 return -EOPNOTSUPP; 4164 4165 /* First 4 bytes of L4 header */ 4166 if (usr_ip4_spec->l4_4_bytes == htonl(0xFFFFFFFF)) 4167 new_mask |= I40E_L4_SRC_MASK | I40E_L4_DST_MASK; 4168 else if (!usr_ip4_spec->l4_4_bytes) 4169 new_mask &= ~(I40E_L4_SRC_MASK | I40E_L4_DST_MASK); 4170 else 4171 return -EOPNOTSUPP; 4172 4173 /* Filtering on Type of Service is not supported. */ 4174 if (usr_ip4_spec->tos) 4175 return -EOPNOTSUPP; 4176 4177 /* Filtering on IP version is not supported */ 4178 if (usr_ip4_spec->ip_ver) 4179 return -EINVAL; 4180 4181 /* Filtering on L4 protocol is not supported */ 4182 if (usr_ip4_spec->proto) 4183 return -EINVAL; 4184 4185 break; 4186 default: 4187 return -EOPNOTSUPP; 4188 } 4189 4190 /* First, clear all flexible filter entries */ 4191 new_mask &= ~I40E_FLEX_INPUT_MASK; 4192 4193 /* If we have a flexible filter, try to add this offset to the correct 4194 * flexible filter PIT list. Once finished, we can update the mask. 4195 * If the src_offset changed, we will get a new mask value which will 4196 * trigger an input set change. 4197 */ 4198 if (userdef->flex_filter) { 4199 struct i40e_flex_pit *l3_flex_pit = NULL, *flex_pit = NULL; 4200 4201 /* Flexible offset must be even, since the flexible payload 4202 * must be aligned on 2-byte boundary. 4203 */ 4204 if (userdef->flex_offset & 0x1) { 4205 dev_warn(&pf->pdev->dev, 4206 "Flexible data offset must be 2-byte aligned\n"); 4207 return -EINVAL; 4208 } 4209 4210 src_offset = userdef->flex_offset >> 1; 4211 4212 /* FLX_PIT source offset value is only so large */ 4213 if (src_offset > I40E_MAX_FLEX_SRC_OFFSET) { 4214 dev_warn(&pf->pdev->dev, 4215 "Flexible data must reside within first 64 bytes of the packet payload\n"); 4216 return -EINVAL; 4217 } 4218 4219 /* See if this offset has already been programmed. If we get 4220 * an ERR_PTR, then the filter is not safe to add. Otherwise, 4221 * if we get a NULL pointer, this means we will need to add 4222 * the offset. 4223 */ 4224 flex_pit = i40e_find_flex_offset(&pf->l4_flex_pit_list, 4225 src_offset); 4226 if (IS_ERR(flex_pit)) 4227 return PTR_ERR(flex_pit); 4228 4229 /* IP_USER_FLOW filters match both L4 (ICMP) and L3 (unknown) 4230 * packet types, and thus we need to program both L3 and L4 4231 * flexible values. These must have identical flexible index, 4232 * as otherwise we can't correctly program the input set. So 4233 * we'll find both an L3 and L4 index and make sure they are 4234 * the same. 4235 */ 4236 if (flex_l3) { 4237 l3_flex_pit = 4238 i40e_find_flex_offset(&pf->l3_flex_pit_list, 4239 src_offset); 4240 if (IS_ERR(l3_flex_pit)) 4241 return PTR_ERR(l3_flex_pit); 4242 4243 if (flex_pit) { 4244 /* If we already had a matching L4 entry, we 4245 * need to make sure that the L3 entry we 4246 * obtained uses the same index. 4247 */ 4248 if (l3_flex_pit) { 4249 if (l3_flex_pit->pit_index != 4250 flex_pit->pit_index) { 4251 return -EINVAL; 4252 } 4253 } else { 4254 new_flex_offset = true; 4255 } 4256 } else { 4257 flex_pit = l3_flex_pit; 4258 } 4259 } 4260 4261 /* If we didn't find an existing flex offset, we need to 4262 * program a new one. However, we don't immediately program it 4263 * here because we will wait to program until after we check 4264 * that it is safe to change the input set. 4265 */ 4266 if (!flex_pit) { 4267 new_flex_offset = true; 4268 pit_index = i40e_unused_pit_index(pf); 4269 } else { 4270 pit_index = flex_pit->pit_index; 4271 } 4272 4273 /* Update the mask with the new offset */ 4274 new_mask |= i40e_pit_index_to_mask(pit_index); 4275 } 4276 4277 /* If the mask and flexible filter offsets for this filter match the 4278 * currently programmed values we don't need any input set change, so 4279 * this filter is safe to install. 4280 */ 4281 if (new_mask == current_mask && !new_flex_offset) 4282 return 0; 4283 4284 netif_info(pf, drv, vsi->netdev, "Input set change requested for %s flows:\n", 4285 i40e_flow_str(fsp)); 4286 i40e_print_input_set(vsi, current_mask, new_mask); 4287 if (new_flex_offset) { 4288 netif_info(pf, drv, vsi->netdev, "FLEX index %d: Offset -> %d", 4289 pit_index, src_offset); 4290 } 4291 4292 /* Hardware input sets are global across multiple ports, so even the 4293 * main port cannot change them when in MFP mode as this would impact 4294 * any filters on the other ports. 4295 */ 4296 if (pf->flags & I40E_FLAG_MFP_ENABLED) { 4297 netif_err(pf, drv, vsi->netdev, "Cannot change Flow Director input sets while MFP is enabled\n"); 4298 return -EOPNOTSUPP; 4299 } 4300 4301 /* This filter requires us to update the input set. However, hardware 4302 * only supports one input set per flow type, and does not support 4303 * separate masks for each filter. This means that we can only support 4304 * a single mask for all filters of a specific type. 4305 * 4306 * If we have preexisting filters, they obviously depend on the 4307 * current programmed input set. Display a diagnostic message in this 4308 * case explaining why the filter could not be accepted. 4309 */ 4310 if (*fdir_filter_count) { 4311 netif_err(pf, drv, vsi->netdev, "Cannot change input set for %s flows until %d preexisting filters are removed\n", 4312 i40e_flow_str(fsp), 4313 *fdir_filter_count); 4314 return -EOPNOTSUPP; 4315 } 4316 4317 i40e_write_fd_input_set(pf, index, new_mask); 4318 4319 /* IP_USER_FLOW filters match both IPv4/Other and IPv4/Fragmented 4320 * frames. If we're programming the input set for IPv4/Other, we also 4321 * need to program the IPv4/Fragmented input set. Since we don't have 4322 * separate support, we'll always assume and enforce that the two flow 4323 * types must have matching input sets. 4324 */ 4325 if (index == I40E_FILTER_PCTYPE_NONF_IPV4_OTHER) 4326 i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_FRAG_IPV4, 4327 new_mask); 4328 4329 /* Add the new offset and update table, if necessary */ 4330 if (new_flex_offset) { 4331 err = i40e_add_flex_offset(&pf->l4_flex_pit_list, src_offset, 4332 pit_index); 4333 if (err) 4334 return err; 4335 4336 if (flex_l3) { 4337 err = i40e_add_flex_offset(&pf->l3_flex_pit_list, 4338 src_offset, 4339 pit_index); 4340 if (err) 4341 return err; 4342 } 4343 4344 i40e_reprogram_flex_pit(pf); 4345 } 4346 4347 return 0; 4348 } 4349 4350 /** 4351 * i40e_match_fdir_filter - Return true of two filters match 4352 * @a: pointer to filter struct 4353 * @b: pointer to filter struct 4354 * 4355 * Returns true if the two filters match exactly the same criteria. I.e. they 4356 * match the same flow type and have the same parameters. We don't need to 4357 * check any input-set since all filters of the same flow type must use the 4358 * same input set. 4359 **/ 4360 static bool i40e_match_fdir_filter(struct i40e_fdir_filter *a, 4361 struct i40e_fdir_filter *b) 4362 { 4363 /* The filters do not much if any of these criteria differ. */ 4364 if (a->dst_ip != b->dst_ip || 4365 a->src_ip != b->src_ip || 4366 a->dst_port != b->dst_port || 4367 a->src_port != b->src_port || 4368 a->flow_type != b->flow_type || 4369 a->ip4_proto != b->ip4_proto) 4370 return false; 4371 4372 return true; 4373 } 4374 4375 /** 4376 * i40e_disallow_matching_filters - Check that new filters differ 4377 * @vsi: pointer to the targeted VSI 4378 * @input: new filter to check 4379 * 4380 * Due to hardware limitations, it is not possible for two filters that match 4381 * similar criteria to be programmed at the same time. This is true for a few 4382 * reasons: 4383 * 4384 * (a) all filters matching a particular flow type must use the same input 4385 * set, that is they must match the same criteria. 4386 * (b) different flow types will never match the same packet, as the flow type 4387 * is decided by hardware before checking which rules apply. 4388 * (c) hardware has no way to distinguish which order filters apply in. 4389 * 4390 * Due to this, we can't really support using the location data to order 4391 * filters in the hardware parsing. It is technically possible for the user to 4392 * request two filters matching the same criteria but which select different 4393 * queues. In this case, rather than keep both filters in the list, we reject 4394 * the 2nd filter when the user requests adding it. 4395 * 4396 * This avoids needing to track location for programming the filter to 4397 * hardware, and ensures that we avoid some strange scenarios involving 4398 * deleting filters which match the same criteria. 4399 **/ 4400 static int i40e_disallow_matching_filters(struct i40e_vsi *vsi, 4401 struct i40e_fdir_filter *input) 4402 { 4403 struct i40e_pf *pf = vsi->back; 4404 struct i40e_fdir_filter *rule; 4405 struct hlist_node *node2; 4406 4407 /* Loop through every filter, and check that it doesn't match */ 4408 hlist_for_each_entry_safe(rule, node2, 4409 &pf->fdir_filter_list, fdir_node) { 4410 /* Don't check the filters match if they share the same fd_id, 4411 * since the new filter is actually just updating the target 4412 * of the old filter. 4413 */ 4414 if (rule->fd_id == input->fd_id) 4415 continue; 4416 4417 /* If any filters match, then print a warning message to the 4418 * kernel message buffer and bail out. 4419 */ 4420 if (i40e_match_fdir_filter(rule, input)) { 4421 dev_warn(&pf->pdev->dev, 4422 "Existing user defined filter %d already matches this flow.\n", 4423 rule->fd_id); 4424 return -EINVAL; 4425 } 4426 } 4427 4428 return 0; 4429 } 4430 4431 /** 4432 * i40e_add_fdir_ethtool - Add/Remove Flow Director filters 4433 * @vsi: pointer to the targeted VSI 4434 * @cmd: command to get or set RX flow classification rules 4435 * 4436 * Add Flow Director filters for a specific flow spec based on their 4437 * protocol. Returns 0 if the filters were successfully added. 4438 **/ 4439 static int i40e_add_fdir_ethtool(struct i40e_vsi *vsi, 4440 struct ethtool_rxnfc *cmd) 4441 { 4442 struct i40e_rx_flow_userdef userdef; 4443 struct ethtool_rx_flow_spec *fsp; 4444 struct i40e_fdir_filter *input; 4445 u16 dest_vsi = 0, q_index = 0; 4446 struct i40e_pf *pf; 4447 int ret = -EINVAL; 4448 u8 dest_ctl; 4449 4450 if (!vsi) 4451 return -EINVAL; 4452 pf = vsi->back; 4453 4454 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED)) 4455 return -EOPNOTSUPP; 4456 4457 if (test_bit(__I40E_FD_SB_AUTO_DISABLED, pf->state)) 4458 return -ENOSPC; 4459 4460 if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) || 4461 test_bit(__I40E_RESET_INTR_RECEIVED, pf->state)) 4462 return -EBUSY; 4463 4464 if (test_bit(__I40E_FD_FLUSH_REQUESTED, pf->state)) 4465 return -EBUSY; 4466 4467 fsp = (struct ethtool_rx_flow_spec *)&cmd->fs; 4468 4469 /* Parse the user-defined field */ 4470 if (i40e_parse_rx_flow_user_data(fsp, &userdef)) 4471 return -EINVAL; 4472 4473 /* Extended MAC field is not supported */ 4474 if (fsp->flow_type & FLOW_MAC_EXT) 4475 return -EINVAL; 4476 4477 ret = i40e_check_fdir_input_set(vsi, fsp, &userdef); 4478 if (ret) 4479 return ret; 4480 4481 if (fsp->location >= (pf->hw.func_caps.fd_filters_best_effort + 4482 pf->hw.func_caps.fd_filters_guaranteed)) { 4483 return -EINVAL; 4484 } 4485 4486 /* ring_cookie is either the drop index, or is a mask of the queue 4487 * index and VF id we wish to target. 4488 */ 4489 if (fsp->ring_cookie == RX_CLS_FLOW_DISC) { 4490 dest_ctl = I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET; 4491 } else { 4492 u32 ring = ethtool_get_flow_spec_ring(fsp->ring_cookie); 4493 u8 vf = ethtool_get_flow_spec_ring_vf(fsp->ring_cookie); 4494 4495 if (!vf) { 4496 if (ring >= vsi->num_queue_pairs) 4497 return -EINVAL; 4498 dest_vsi = vsi->id; 4499 } else { 4500 /* VFs are zero-indexed, so we subtract one here */ 4501 vf--; 4502 4503 if (vf >= pf->num_alloc_vfs) 4504 return -EINVAL; 4505 if (ring >= pf->vf[vf].num_queue_pairs) 4506 return -EINVAL; 4507 dest_vsi = pf->vf[vf].lan_vsi_id; 4508 } 4509 dest_ctl = I40E_FILTER_PROGRAM_DESC_DEST_DIRECT_PACKET_QINDEX; 4510 q_index = ring; 4511 } 4512 4513 input = kzalloc(sizeof(*input), GFP_KERNEL); 4514 4515 if (!input) 4516 return -ENOMEM; 4517 4518 input->fd_id = fsp->location; 4519 input->q_index = q_index; 4520 input->dest_vsi = dest_vsi; 4521 input->dest_ctl = dest_ctl; 4522 input->fd_status = I40E_FILTER_PROGRAM_DESC_FD_STATUS_FD_ID; 4523 input->cnt_index = I40E_FD_SB_STAT_IDX(pf->hw.pf_id); 4524 input->dst_ip = fsp->h_u.tcp_ip4_spec.ip4src; 4525 input->src_ip = fsp->h_u.tcp_ip4_spec.ip4dst; 4526 input->flow_type = fsp->flow_type & ~FLOW_EXT; 4527 input->ip4_proto = fsp->h_u.usr_ip4_spec.proto; 4528 4529 /* Reverse the src and dest notion, since the HW expects them to be from 4530 * Tx perspective where as the input from user is from Rx filter view. 4531 */ 4532 input->dst_port = fsp->h_u.tcp_ip4_spec.psrc; 4533 input->src_port = fsp->h_u.tcp_ip4_spec.pdst; 4534 input->dst_ip = fsp->h_u.tcp_ip4_spec.ip4src; 4535 input->src_ip = fsp->h_u.tcp_ip4_spec.ip4dst; 4536 4537 if (userdef.flex_filter) { 4538 input->flex_filter = true; 4539 input->flex_word = cpu_to_be16(userdef.flex_word); 4540 input->flex_offset = userdef.flex_offset; 4541 } 4542 4543 /* Avoid programming two filters with identical match criteria. */ 4544 ret = i40e_disallow_matching_filters(vsi, input); 4545 if (ret) 4546 goto free_filter_memory; 4547 4548 /* Add the input filter to the fdir_input_list, possibly replacing 4549 * a previous filter. Do not free the input structure after adding it 4550 * to the list as this would cause a use-after-free bug. 4551 */ 4552 i40e_update_ethtool_fdir_entry(vsi, input, fsp->location, NULL); 4553 ret = i40e_add_del_fdir(vsi, input, true); 4554 if (ret) 4555 goto remove_sw_rule; 4556 return 0; 4557 4558 remove_sw_rule: 4559 hlist_del(&input->fdir_node); 4560 pf->fdir_pf_active_filters--; 4561 free_filter_memory: 4562 kfree(input); 4563 return ret; 4564 } 4565 4566 /** 4567 * i40e_set_rxnfc - command to set RX flow classification rules 4568 * @netdev: network interface device structure 4569 * @cmd: ethtool rxnfc command 4570 * 4571 * Returns Success if the command is supported. 4572 **/ 4573 static int i40e_set_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd) 4574 { 4575 struct i40e_netdev_priv *np = netdev_priv(netdev); 4576 struct i40e_vsi *vsi = np->vsi; 4577 struct i40e_pf *pf = vsi->back; 4578 int ret = -EOPNOTSUPP; 4579 4580 switch (cmd->cmd) { 4581 case ETHTOOL_SRXFH: 4582 ret = i40e_set_rss_hash_opt(pf, cmd); 4583 break; 4584 case ETHTOOL_SRXCLSRLINS: 4585 ret = i40e_add_fdir_ethtool(vsi, cmd); 4586 break; 4587 case ETHTOOL_SRXCLSRLDEL: 4588 ret = i40e_del_fdir_entry(vsi, cmd); 4589 break; 4590 default: 4591 break; 4592 } 4593 4594 return ret; 4595 } 4596 4597 /** 4598 * i40e_max_channels - get Max number of combined channels supported 4599 * @vsi: vsi pointer 4600 **/ 4601 static unsigned int i40e_max_channels(struct i40e_vsi *vsi) 4602 { 4603 /* TODO: This code assumes DCB and FD is disabled for now. */ 4604 return vsi->alloc_queue_pairs; 4605 } 4606 4607 /** 4608 * i40e_get_channels - Get the current channels enabled and max supported etc. 4609 * @dev: network interface device structure 4610 * @ch: ethtool channels structure 4611 * 4612 * We don't support separate tx and rx queues as channels. The other count 4613 * represents how many queues are being used for control. max_combined counts 4614 * how many queue pairs we can support. They may not be mapped 1 to 1 with 4615 * q_vectors since we support a lot more queue pairs than q_vectors. 4616 **/ 4617 static void i40e_get_channels(struct net_device *dev, 4618 struct ethtool_channels *ch) 4619 { 4620 struct i40e_netdev_priv *np = netdev_priv(dev); 4621 struct i40e_vsi *vsi = np->vsi; 4622 struct i40e_pf *pf = vsi->back; 4623 4624 /* report maximum channels */ 4625 ch->max_combined = i40e_max_channels(vsi); 4626 4627 /* report info for other vector */ 4628 ch->other_count = (pf->flags & I40E_FLAG_FD_SB_ENABLED) ? 1 : 0; 4629 ch->max_other = ch->other_count; 4630 4631 /* Note: This code assumes DCB is disabled for now. */ 4632 ch->combined_count = vsi->num_queue_pairs; 4633 } 4634 4635 /** 4636 * i40e_set_channels - Set the new channels count. 4637 * @dev: network interface device structure 4638 * @ch: ethtool channels structure 4639 * 4640 * The new channels count may not be the same as requested by the user 4641 * since it gets rounded down to a power of 2 value. 4642 **/ 4643 static int i40e_set_channels(struct net_device *dev, 4644 struct ethtool_channels *ch) 4645 { 4646 const u8 drop = I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET; 4647 struct i40e_netdev_priv *np = netdev_priv(dev); 4648 unsigned int count = ch->combined_count; 4649 struct i40e_vsi *vsi = np->vsi; 4650 struct i40e_pf *pf = vsi->back; 4651 struct i40e_fdir_filter *rule; 4652 struct hlist_node *node2; 4653 int new_count; 4654 int err = 0; 4655 4656 /* We do not support setting channels for any other VSI at present */ 4657 if (vsi->type != I40E_VSI_MAIN) 4658 return -EINVAL; 4659 4660 /* We do not support setting channels via ethtool when TCs are 4661 * configured through mqprio 4662 */ 4663 if (pf->flags & I40E_FLAG_TC_MQPRIO) 4664 return -EINVAL; 4665 4666 /* verify they are not requesting separate vectors */ 4667 if (!count || ch->rx_count || ch->tx_count) 4668 return -EINVAL; 4669 4670 /* verify other_count has not changed */ 4671 if (ch->other_count != ((pf->flags & I40E_FLAG_FD_SB_ENABLED) ? 1 : 0)) 4672 return -EINVAL; 4673 4674 /* verify the number of channels does not exceed hardware limits */ 4675 if (count > i40e_max_channels(vsi)) 4676 return -EINVAL; 4677 4678 /* verify that the number of channels does not invalidate any current 4679 * flow director rules 4680 */ 4681 hlist_for_each_entry_safe(rule, node2, 4682 &pf->fdir_filter_list, fdir_node) { 4683 if (rule->dest_ctl != drop && count <= rule->q_index) { 4684 dev_warn(&pf->pdev->dev, 4685 "Existing user defined filter %d assigns flow to queue %d\n", 4686 rule->fd_id, rule->q_index); 4687 err = -EINVAL; 4688 } 4689 } 4690 4691 if (err) { 4692 dev_err(&pf->pdev->dev, 4693 "Existing filter rules must be deleted to reduce combined channel count to %d\n", 4694 count); 4695 return err; 4696 } 4697 4698 /* update feature limits from largest to smallest supported values */ 4699 /* TODO: Flow director limit, DCB etc */ 4700 4701 /* use rss_reconfig to rebuild with new queue count and update traffic 4702 * class queue mapping 4703 */ 4704 new_count = i40e_reconfig_rss_queues(pf, count); 4705 if (new_count > 0) 4706 return 0; 4707 else 4708 return -EINVAL; 4709 } 4710 4711 /** 4712 * i40e_get_rxfh_key_size - get the RSS hash key size 4713 * @netdev: network interface device structure 4714 * 4715 * Returns the table size. 4716 **/ 4717 static u32 i40e_get_rxfh_key_size(struct net_device *netdev) 4718 { 4719 return I40E_HKEY_ARRAY_SIZE; 4720 } 4721 4722 /** 4723 * i40e_get_rxfh_indir_size - get the rx flow hash indirection table size 4724 * @netdev: network interface device structure 4725 * 4726 * Returns the table size. 4727 **/ 4728 static u32 i40e_get_rxfh_indir_size(struct net_device *netdev) 4729 { 4730 return I40E_HLUT_ARRAY_SIZE; 4731 } 4732 4733 /** 4734 * i40e_get_rxfh - get the rx flow hash indirection table 4735 * @netdev: network interface device structure 4736 * @indir: indirection table 4737 * @key: hash key 4738 * @hfunc: hash function 4739 * 4740 * Reads the indirection table directly from the hardware. Returns 0 on 4741 * success. 4742 **/ 4743 static int i40e_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key, 4744 u8 *hfunc) 4745 { 4746 struct i40e_netdev_priv *np = netdev_priv(netdev); 4747 struct i40e_vsi *vsi = np->vsi; 4748 u8 *lut, *seed = NULL; 4749 int ret; 4750 u16 i; 4751 4752 if (hfunc) 4753 *hfunc = ETH_RSS_HASH_TOP; 4754 4755 if (!indir) 4756 return 0; 4757 4758 seed = key; 4759 lut = kzalloc(I40E_HLUT_ARRAY_SIZE, GFP_KERNEL); 4760 if (!lut) 4761 return -ENOMEM; 4762 ret = i40e_get_rss(vsi, seed, lut, I40E_HLUT_ARRAY_SIZE); 4763 if (ret) 4764 goto out; 4765 for (i = 0; i < I40E_HLUT_ARRAY_SIZE; i++) 4766 indir[i] = (u32)(lut[i]); 4767 4768 out: 4769 kfree(lut); 4770 4771 return ret; 4772 } 4773 4774 /** 4775 * i40e_set_rxfh - set the rx flow hash indirection table 4776 * @netdev: network interface device structure 4777 * @indir: indirection table 4778 * @key: hash key 4779 * @hfunc: hash function to use 4780 * 4781 * Returns -EINVAL if the table specifies an invalid queue id, otherwise 4782 * returns 0 after programming the table. 4783 **/ 4784 static int i40e_set_rxfh(struct net_device *netdev, const u32 *indir, 4785 const u8 *key, const u8 hfunc) 4786 { 4787 struct i40e_netdev_priv *np = netdev_priv(netdev); 4788 struct i40e_vsi *vsi = np->vsi; 4789 struct i40e_pf *pf = vsi->back; 4790 u8 *seed = NULL; 4791 u16 i; 4792 4793 if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP) 4794 return -EOPNOTSUPP; 4795 4796 if (key) { 4797 if (!vsi->rss_hkey_user) { 4798 vsi->rss_hkey_user = kzalloc(I40E_HKEY_ARRAY_SIZE, 4799 GFP_KERNEL); 4800 if (!vsi->rss_hkey_user) 4801 return -ENOMEM; 4802 } 4803 memcpy(vsi->rss_hkey_user, key, I40E_HKEY_ARRAY_SIZE); 4804 seed = vsi->rss_hkey_user; 4805 } 4806 if (!vsi->rss_lut_user) { 4807 vsi->rss_lut_user = kzalloc(I40E_HLUT_ARRAY_SIZE, GFP_KERNEL); 4808 if (!vsi->rss_lut_user) 4809 return -ENOMEM; 4810 } 4811 4812 /* Each 32 bits pointed by 'indir' is stored with a lut entry */ 4813 if (indir) 4814 for (i = 0; i < I40E_HLUT_ARRAY_SIZE; i++) 4815 vsi->rss_lut_user[i] = (u8)(indir[i]); 4816 else 4817 i40e_fill_rss_lut(pf, vsi->rss_lut_user, I40E_HLUT_ARRAY_SIZE, 4818 vsi->rss_size); 4819 4820 return i40e_config_rss(vsi, seed, vsi->rss_lut_user, 4821 I40E_HLUT_ARRAY_SIZE); 4822 } 4823 4824 /** 4825 * i40e_get_priv_flags - report device private flags 4826 * @dev: network interface device structure 4827 * 4828 * The get string set count and the string set should be matched for each 4829 * flag returned. Add new strings for each flag to the i40e_gstrings_priv_flags 4830 * array. 4831 * 4832 * Returns a u32 bitmap of flags. 4833 **/ 4834 static u32 i40e_get_priv_flags(struct net_device *dev) 4835 { 4836 struct i40e_netdev_priv *np = netdev_priv(dev); 4837 struct i40e_vsi *vsi = np->vsi; 4838 struct i40e_pf *pf = vsi->back; 4839 u32 i, j, ret_flags = 0; 4840 4841 for (i = 0; i < I40E_PRIV_FLAGS_STR_LEN; i++) { 4842 const struct i40e_priv_flags *priv_flags; 4843 4844 priv_flags = &i40e_gstrings_priv_flags[i]; 4845 4846 if (priv_flags->flag & pf->flags) 4847 ret_flags |= BIT(i); 4848 } 4849 4850 if (pf->hw.pf_id != 0) 4851 return ret_flags; 4852 4853 for (j = 0; j < I40E_GL_PRIV_FLAGS_STR_LEN; j++) { 4854 const struct i40e_priv_flags *priv_flags; 4855 4856 priv_flags = &i40e_gl_gstrings_priv_flags[j]; 4857 4858 if (priv_flags->flag & pf->flags) 4859 ret_flags |= BIT(i + j); 4860 } 4861 4862 return ret_flags; 4863 } 4864 4865 /** 4866 * i40e_set_priv_flags - set private flags 4867 * @dev: network interface device structure 4868 * @flags: bit flags to be set 4869 **/ 4870 static int i40e_set_priv_flags(struct net_device *dev, u32 flags) 4871 { 4872 struct i40e_netdev_priv *np = netdev_priv(dev); 4873 u64 orig_flags, new_flags, changed_flags; 4874 enum i40e_admin_queue_err adq_err; 4875 struct i40e_vsi *vsi = np->vsi; 4876 struct i40e_pf *pf = vsi->back; 4877 bool is_reset_needed; 4878 i40e_status status; 4879 u32 i, j; 4880 4881 orig_flags = READ_ONCE(pf->flags); 4882 new_flags = orig_flags; 4883 4884 for (i = 0; i < I40E_PRIV_FLAGS_STR_LEN; i++) { 4885 const struct i40e_priv_flags *priv_flags; 4886 4887 priv_flags = &i40e_gstrings_priv_flags[i]; 4888 4889 if (flags & BIT(i)) 4890 new_flags |= priv_flags->flag; 4891 else 4892 new_flags &= ~(priv_flags->flag); 4893 4894 /* If this is a read-only flag, it can't be changed */ 4895 if (priv_flags->read_only && 4896 ((orig_flags ^ new_flags) & ~BIT(i))) 4897 return -EOPNOTSUPP; 4898 } 4899 4900 if (pf->hw.pf_id != 0) 4901 goto flags_complete; 4902 4903 for (j = 0; j < I40E_GL_PRIV_FLAGS_STR_LEN; j++) { 4904 const struct i40e_priv_flags *priv_flags; 4905 4906 priv_flags = &i40e_gl_gstrings_priv_flags[j]; 4907 4908 if (flags & BIT(i + j)) 4909 new_flags |= priv_flags->flag; 4910 else 4911 new_flags &= ~(priv_flags->flag); 4912 4913 /* If this is a read-only flag, it can't be changed */ 4914 if (priv_flags->read_only && 4915 ((orig_flags ^ new_flags) & ~BIT(i))) 4916 return -EOPNOTSUPP; 4917 } 4918 4919 flags_complete: 4920 changed_flags = orig_flags ^ new_flags; 4921 4922 is_reset_needed = !!(changed_flags & (I40E_FLAG_VEB_STATS_ENABLED | 4923 I40E_FLAG_LEGACY_RX | I40E_FLAG_SOURCE_PRUNING_DISABLED | 4924 I40E_FLAG_DISABLE_FW_LLDP)); 4925 4926 /* Before we finalize any flag changes, we need to perform some 4927 * checks to ensure that the changes are supported and safe. 4928 */ 4929 4930 /* ATR eviction is not supported on all devices */ 4931 if ((new_flags & I40E_FLAG_HW_ATR_EVICT_ENABLED) && 4932 !(pf->hw_features & I40E_HW_ATR_EVICT_CAPABLE)) 4933 return -EOPNOTSUPP; 4934 4935 /* If the driver detected FW LLDP was disabled on init, this flag could 4936 * be set, however we do not support _changing_ the flag: 4937 * - on XL710 if NPAR is enabled or FW API version < 1.7 4938 * - on X722 with FW API version < 1.6 4939 * There are situations where older FW versions/NPAR enabled PFs could 4940 * disable LLDP, however we _must_ not allow the user to enable/disable 4941 * LLDP with this flag on unsupported FW versions. 4942 */ 4943 if (changed_flags & I40E_FLAG_DISABLE_FW_LLDP) { 4944 if (!(pf->hw.flags & I40E_HW_FLAG_FW_LLDP_STOPPABLE)) { 4945 dev_warn(&pf->pdev->dev, 4946 "Device does not support changing FW LLDP\n"); 4947 return -EOPNOTSUPP; 4948 } 4949 } 4950 4951 if (((changed_flags & I40E_FLAG_RS_FEC) || 4952 (changed_flags & I40E_FLAG_BASE_R_FEC)) && 4953 pf->hw.device_id != I40E_DEV_ID_25G_SFP28 && 4954 pf->hw.device_id != I40E_DEV_ID_25G_B) { 4955 dev_warn(&pf->pdev->dev, 4956 "Device does not support changing FEC configuration\n"); 4957 return -EOPNOTSUPP; 4958 } 4959 4960 /* Process any additional changes needed as a result of flag changes. 4961 * The changed_flags value reflects the list of bits that were 4962 * changed in the code above. 4963 */ 4964 4965 /* Flush current ATR settings if ATR was disabled */ 4966 if ((changed_flags & I40E_FLAG_FD_ATR_ENABLED) && 4967 !(new_flags & I40E_FLAG_FD_ATR_ENABLED)) { 4968 set_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state); 4969 set_bit(__I40E_FD_FLUSH_REQUESTED, pf->state); 4970 } 4971 4972 if (changed_flags & I40E_FLAG_TRUE_PROMISC_SUPPORT) { 4973 u16 sw_flags = 0, valid_flags = 0; 4974 int ret; 4975 4976 if (!(new_flags & I40E_FLAG_TRUE_PROMISC_SUPPORT)) 4977 sw_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC; 4978 valid_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC; 4979 ret = i40e_aq_set_switch_config(&pf->hw, sw_flags, valid_flags, 4980 0, NULL); 4981 if (ret && pf->hw.aq.asq_last_status != I40E_AQ_RC_ESRCH) { 4982 dev_info(&pf->pdev->dev, 4983 "couldn't set switch config bits, err %s aq_err %s\n", 4984 i40e_stat_str(&pf->hw, ret), 4985 i40e_aq_str(&pf->hw, 4986 pf->hw.aq.asq_last_status)); 4987 /* not a fatal problem, just keep going */ 4988 } 4989 } 4990 4991 if ((changed_flags & I40E_FLAG_RS_FEC) || 4992 (changed_flags & I40E_FLAG_BASE_R_FEC)) { 4993 u8 fec_cfg = 0; 4994 4995 if (new_flags & I40E_FLAG_RS_FEC && 4996 new_flags & I40E_FLAG_BASE_R_FEC) { 4997 fec_cfg = I40E_AQ_SET_FEC_AUTO; 4998 } else if (new_flags & I40E_FLAG_RS_FEC) { 4999 fec_cfg = (I40E_AQ_SET_FEC_REQUEST_RS | 5000 I40E_AQ_SET_FEC_ABILITY_RS); 5001 } else if (new_flags & I40E_FLAG_BASE_R_FEC) { 5002 fec_cfg = (I40E_AQ_SET_FEC_REQUEST_KR | 5003 I40E_AQ_SET_FEC_ABILITY_KR); 5004 } 5005 if (i40e_set_fec_cfg(dev, fec_cfg)) 5006 dev_warn(&pf->pdev->dev, "Cannot change FEC config\n"); 5007 } 5008 5009 if ((changed_flags & new_flags & 5010 I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED) && 5011 (new_flags & I40E_FLAG_MFP_ENABLED)) 5012 dev_warn(&pf->pdev->dev, 5013 "Turning on link-down-on-close flag may affect other partitions\n"); 5014 5015 if (changed_flags & I40E_FLAG_DISABLE_FW_LLDP) { 5016 if (new_flags & I40E_FLAG_DISABLE_FW_LLDP) { 5017 struct i40e_dcbx_config *dcbcfg; 5018 5019 i40e_aq_stop_lldp(&pf->hw, true, false, NULL); 5020 i40e_aq_set_dcb_parameters(&pf->hw, true, NULL); 5021 /* reset local_dcbx_config to default */ 5022 dcbcfg = &pf->hw.local_dcbx_config; 5023 dcbcfg->etscfg.willing = 1; 5024 dcbcfg->etscfg.maxtcs = 0; 5025 dcbcfg->etscfg.tcbwtable[0] = 100; 5026 for (i = 1; i < I40E_MAX_TRAFFIC_CLASS; i++) 5027 dcbcfg->etscfg.tcbwtable[i] = 0; 5028 for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) 5029 dcbcfg->etscfg.prioritytable[i] = 0; 5030 dcbcfg->etscfg.tsatable[0] = I40E_IEEE_TSA_ETS; 5031 dcbcfg->pfc.willing = 1; 5032 dcbcfg->pfc.pfccap = I40E_MAX_TRAFFIC_CLASS; 5033 } else { 5034 status = i40e_aq_start_lldp(&pf->hw, false, NULL); 5035 if (status) { 5036 adq_err = pf->hw.aq.asq_last_status; 5037 switch (adq_err) { 5038 case I40E_AQ_RC_EEXIST: 5039 dev_warn(&pf->pdev->dev, 5040 "FW LLDP agent is already running\n"); 5041 is_reset_needed = false; 5042 break; 5043 case I40E_AQ_RC_EPERM: 5044 dev_warn(&pf->pdev->dev, 5045 "Device configuration forbids SW from starting the LLDP agent.\n"); 5046 return -EINVAL; 5047 default: 5048 dev_warn(&pf->pdev->dev, 5049 "Starting FW LLDP agent failed: error: %s, %s\n", 5050 i40e_stat_str(&pf->hw, 5051 status), 5052 i40e_aq_str(&pf->hw, 5053 adq_err)); 5054 return -EINVAL; 5055 } 5056 } 5057 } 5058 } 5059 5060 /* Now that we've checked to ensure that the new flags are valid, load 5061 * them into place. Since we only modify flags either (a) during 5062 * initialization or (b) while holding the RTNL lock, we don't need 5063 * anything fancy here. 5064 */ 5065 pf->flags = new_flags; 5066 5067 /* Issue reset to cause things to take effect, as additional bits 5068 * are added we will need to create a mask of bits requiring reset 5069 */ 5070 if (is_reset_needed) 5071 i40e_do_reset(pf, BIT(__I40E_PF_RESET_REQUESTED), true); 5072 5073 return 0; 5074 } 5075 5076 /** 5077 * i40e_get_module_info - get (Q)SFP+ module type info 5078 * @netdev: network interface device structure 5079 * @modinfo: module EEPROM size and layout information structure 5080 **/ 5081 static int i40e_get_module_info(struct net_device *netdev, 5082 struct ethtool_modinfo *modinfo) 5083 { 5084 struct i40e_netdev_priv *np = netdev_priv(netdev); 5085 struct i40e_vsi *vsi = np->vsi; 5086 struct i40e_pf *pf = vsi->back; 5087 struct i40e_hw *hw = &pf->hw; 5088 u32 sff8472_comp = 0; 5089 u32 sff8472_swap = 0; 5090 u32 sff8636_rev = 0; 5091 i40e_status status; 5092 u32 type = 0; 5093 5094 /* Check if firmware supports reading module EEPROM. */ 5095 if (!(hw->flags & I40E_HW_FLAG_AQ_PHY_ACCESS_CAPABLE)) { 5096 netdev_err(vsi->netdev, "Module EEPROM memory read not supported. Please update the NVM image.\n"); 5097 return -EINVAL; 5098 } 5099 5100 status = i40e_update_link_info(hw); 5101 if (status) 5102 return -EIO; 5103 5104 if (hw->phy.link_info.phy_type == I40E_PHY_TYPE_EMPTY) { 5105 netdev_err(vsi->netdev, "Cannot read module EEPROM memory. No module connected.\n"); 5106 return -EINVAL; 5107 } 5108 5109 type = hw->phy.link_info.module_type[0]; 5110 5111 switch (type) { 5112 case I40E_MODULE_TYPE_SFP: 5113 status = i40e_aq_get_phy_register(hw, 5114 I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE, 5115 I40E_I2C_EEPROM_DEV_ADDR, true, 5116 I40E_MODULE_SFF_8472_COMP, 5117 &sff8472_comp, NULL); 5118 if (status) 5119 return -EIO; 5120 5121 status = i40e_aq_get_phy_register(hw, 5122 I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE, 5123 I40E_I2C_EEPROM_DEV_ADDR, true, 5124 I40E_MODULE_SFF_8472_SWAP, 5125 &sff8472_swap, NULL); 5126 if (status) 5127 return -EIO; 5128 5129 /* Check if the module requires address swap to access 5130 * the other EEPROM memory page. 5131 */ 5132 if (sff8472_swap & I40E_MODULE_SFF_ADDR_MODE) { 5133 netdev_warn(vsi->netdev, "Module address swap to access page 0xA2 is not supported.\n"); 5134 modinfo->type = ETH_MODULE_SFF_8079; 5135 modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN; 5136 } else if (sff8472_comp == 0x00) { 5137 /* Module is not SFF-8472 compliant */ 5138 modinfo->type = ETH_MODULE_SFF_8079; 5139 modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN; 5140 } else if (!(sff8472_swap & I40E_MODULE_SFF_DDM_IMPLEMENTED)) { 5141 /* Module is SFF-8472 compliant but doesn't implement 5142 * Digital Diagnostic Monitoring (DDM). 5143 */ 5144 modinfo->type = ETH_MODULE_SFF_8079; 5145 modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN; 5146 } else { 5147 modinfo->type = ETH_MODULE_SFF_8472; 5148 modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN; 5149 } 5150 break; 5151 case I40E_MODULE_TYPE_QSFP_PLUS: 5152 /* Read from memory page 0. */ 5153 status = i40e_aq_get_phy_register(hw, 5154 I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE, 5155 0, true, 5156 I40E_MODULE_REVISION_ADDR, 5157 &sff8636_rev, NULL); 5158 if (status) 5159 return -EIO; 5160 /* Determine revision compliance byte */ 5161 if (sff8636_rev > 0x02) { 5162 /* Module is SFF-8636 compliant */ 5163 modinfo->type = ETH_MODULE_SFF_8636; 5164 modinfo->eeprom_len = I40E_MODULE_QSFP_MAX_LEN; 5165 } else { 5166 modinfo->type = ETH_MODULE_SFF_8436; 5167 modinfo->eeprom_len = I40E_MODULE_QSFP_MAX_LEN; 5168 } 5169 break; 5170 case I40E_MODULE_TYPE_QSFP28: 5171 modinfo->type = ETH_MODULE_SFF_8636; 5172 modinfo->eeprom_len = I40E_MODULE_QSFP_MAX_LEN; 5173 break; 5174 default: 5175 netdev_err(vsi->netdev, "Module type unrecognized\n"); 5176 return -EINVAL; 5177 } 5178 return 0; 5179 } 5180 5181 /** 5182 * i40e_get_module_eeprom - fills buffer with (Q)SFP+ module memory contents 5183 * @netdev: network interface device structure 5184 * @ee: EEPROM dump request structure 5185 * @data: buffer to be filled with EEPROM contents 5186 **/ 5187 static int i40e_get_module_eeprom(struct net_device *netdev, 5188 struct ethtool_eeprom *ee, 5189 u8 *data) 5190 { 5191 struct i40e_netdev_priv *np = netdev_priv(netdev); 5192 struct i40e_vsi *vsi = np->vsi; 5193 struct i40e_pf *pf = vsi->back; 5194 struct i40e_hw *hw = &pf->hw; 5195 bool is_sfp = false; 5196 i40e_status status; 5197 u32 value = 0; 5198 int i; 5199 5200 if (!ee || !ee->len || !data) 5201 return -EINVAL; 5202 5203 if (hw->phy.link_info.module_type[0] == I40E_MODULE_TYPE_SFP) 5204 is_sfp = true; 5205 5206 for (i = 0; i < ee->len; i++) { 5207 u32 offset = i + ee->offset; 5208 u32 addr = is_sfp ? I40E_I2C_EEPROM_DEV_ADDR : 0; 5209 5210 /* Check if we need to access the other memory page */ 5211 if (is_sfp) { 5212 if (offset >= ETH_MODULE_SFF_8079_LEN) { 5213 offset -= ETH_MODULE_SFF_8079_LEN; 5214 addr = I40E_I2C_EEPROM_DEV_ADDR2; 5215 } 5216 } else { 5217 while (offset >= ETH_MODULE_SFF_8436_LEN) { 5218 /* Compute memory page number and offset. */ 5219 offset -= ETH_MODULE_SFF_8436_LEN / 2; 5220 addr++; 5221 } 5222 } 5223 5224 status = i40e_aq_get_phy_register(hw, 5225 I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE, 5226 true, addr, offset, &value, NULL); 5227 if (status) 5228 return -EIO; 5229 data[i] = value; 5230 } 5231 return 0; 5232 } 5233 5234 static int i40e_get_eee(struct net_device *netdev, struct ethtool_eee *edata) 5235 { 5236 return -EOPNOTSUPP; 5237 } 5238 5239 static int i40e_set_eee(struct net_device *netdev, struct ethtool_eee *edata) 5240 { 5241 return -EOPNOTSUPP; 5242 } 5243 5244 static const struct ethtool_ops i40e_ethtool_recovery_mode_ops = { 5245 .get_drvinfo = i40e_get_drvinfo, 5246 .set_eeprom = i40e_set_eeprom, 5247 .get_eeprom_len = i40e_get_eeprom_len, 5248 .get_eeprom = i40e_get_eeprom, 5249 }; 5250 5251 static const struct ethtool_ops i40e_ethtool_ops = { 5252 .get_drvinfo = i40e_get_drvinfo, 5253 .get_regs_len = i40e_get_regs_len, 5254 .get_regs = i40e_get_regs, 5255 .nway_reset = i40e_nway_reset, 5256 .get_link = ethtool_op_get_link, 5257 .get_wol = i40e_get_wol, 5258 .set_wol = i40e_set_wol, 5259 .set_eeprom = i40e_set_eeprom, 5260 .get_eeprom_len = i40e_get_eeprom_len, 5261 .get_eeprom = i40e_get_eeprom, 5262 .get_ringparam = i40e_get_ringparam, 5263 .set_ringparam = i40e_set_ringparam, 5264 .get_pauseparam = i40e_get_pauseparam, 5265 .set_pauseparam = i40e_set_pauseparam, 5266 .get_msglevel = i40e_get_msglevel, 5267 .set_msglevel = i40e_set_msglevel, 5268 .get_rxnfc = i40e_get_rxnfc, 5269 .set_rxnfc = i40e_set_rxnfc, 5270 .self_test = i40e_diag_test, 5271 .get_strings = i40e_get_strings, 5272 .get_eee = i40e_get_eee, 5273 .set_eee = i40e_set_eee, 5274 .set_phys_id = i40e_set_phys_id, 5275 .get_sset_count = i40e_get_sset_count, 5276 .get_ethtool_stats = i40e_get_ethtool_stats, 5277 .get_coalesce = i40e_get_coalesce, 5278 .set_coalesce = i40e_set_coalesce, 5279 .get_rxfh_key_size = i40e_get_rxfh_key_size, 5280 .get_rxfh_indir_size = i40e_get_rxfh_indir_size, 5281 .get_rxfh = i40e_get_rxfh, 5282 .set_rxfh = i40e_set_rxfh, 5283 .get_channels = i40e_get_channels, 5284 .set_channels = i40e_set_channels, 5285 .get_module_info = i40e_get_module_info, 5286 .get_module_eeprom = i40e_get_module_eeprom, 5287 .get_ts_info = i40e_get_ts_info, 5288 .get_priv_flags = i40e_get_priv_flags, 5289 .set_priv_flags = i40e_set_priv_flags, 5290 .get_per_queue_coalesce = i40e_get_per_queue_coalesce, 5291 .set_per_queue_coalesce = i40e_set_per_queue_coalesce, 5292 .get_link_ksettings = i40e_get_link_ksettings, 5293 .set_link_ksettings = i40e_set_link_ksettings, 5294 .get_fecparam = i40e_get_fec_param, 5295 .set_fecparam = i40e_set_fec_param, 5296 .flash_device = i40e_ddp_flash, 5297 }; 5298 5299 void i40e_set_ethtool_ops(struct net_device *netdev) 5300 { 5301 struct i40e_netdev_priv *np = netdev_priv(netdev); 5302 struct i40e_pf *pf = np->vsi->back; 5303 5304 if (!test_bit(__I40E_RECOVERY_MODE, pf->state)) 5305 netdev->ethtool_ops = &i40e_ethtool_ops; 5306 else 5307 netdev->ethtool_ops = &i40e_ethtool_recovery_mode_ops; 5308 } 5309