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 = FIELD_SIZEOF(_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 - Get the Link settings for when link is up 715 * @hw: hw structure 716 * @ks: ethtool ksettings to fill in 717 * @netdev: network interface device structure 718 * @pf: pointer to physical function struct 719 **/ 720 static void i40e_get_settings_link_up(struct i40e_hw *hw, 721 struct ethtool_link_ksettings *ks, 722 struct net_device *netdev, 723 struct i40e_pf *pf) 724 { 725 struct i40e_link_status *hw_link_info = &hw->phy.link_info; 726 struct ethtool_link_ksettings cap_ksettings; 727 u32 link_speed = hw_link_info->link_speed; 728 729 /* Initialize supported and advertised settings based on phy settings */ 730 switch (hw_link_info->phy_type) { 731 case I40E_PHY_TYPE_40GBASE_CR4: 732 case I40E_PHY_TYPE_40GBASE_CR4_CU: 733 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg); 734 ethtool_link_ksettings_add_link_mode(ks, supported, 735 40000baseCR4_Full); 736 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg); 737 ethtool_link_ksettings_add_link_mode(ks, advertising, 738 40000baseCR4_Full); 739 break; 740 case I40E_PHY_TYPE_XLAUI: 741 case I40E_PHY_TYPE_XLPPI: 742 case I40E_PHY_TYPE_40GBASE_AOC: 743 ethtool_link_ksettings_add_link_mode(ks, supported, 744 40000baseCR4_Full); 745 ethtool_link_ksettings_add_link_mode(ks, advertising, 746 40000baseCR4_Full); 747 break; 748 case I40E_PHY_TYPE_40GBASE_SR4: 749 ethtool_link_ksettings_add_link_mode(ks, supported, 750 40000baseSR4_Full); 751 ethtool_link_ksettings_add_link_mode(ks, advertising, 752 40000baseSR4_Full); 753 break; 754 case I40E_PHY_TYPE_40GBASE_LR4: 755 ethtool_link_ksettings_add_link_mode(ks, supported, 756 40000baseLR4_Full); 757 ethtool_link_ksettings_add_link_mode(ks, advertising, 758 40000baseLR4_Full); 759 break; 760 case I40E_PHY_TYPE_25GBASE_SR: 761 case I40E_PHY_TYPE_25GBASE_LR: 762 case I40E_PHY_TYPE_10GBASE_SR: 763 case I40E_PHY_TYPE_10GBASE_LR: 764 case I40E_PHY_TYPE_1000BASE_SX: 765 case I40E_PHY_TYPE_1000BASE_LX: 766 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg); 767 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg); 768 ethtool_link_ksettings_add_link_mode(ks, supported, 769 25000baseSR_Full); 770 ethtool_link_ksettings_add_link_mode(ks, advertising, 771 25000baseSR_Full); 772 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_NONE); 773 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_RS); 774 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_BASER); 775 ethtool_link_ksettings_add_link_mode(ks, advertising, FEC_NONE); 776 ethtool_link_ksettings_add_link_mode(ks, advertising, FEC_RS); 777 ethtool_link_ksettings_add_link_mode(ks, advertising, 778 FEC_BASER); 779 ethtool_link_ksettings_add_link_mode(ks, supported, 780 10000baseSR_Full); 781 ethtool_link_ksettings_add_link_mode(ks, advertising, 782 10000baseSR_Full); 783 ethtool_link_ksettings_add_link_mode(ks, supported, 784 10000baseLR_Full); 785 ethtool_link_ksettings_add_link_mode(ks, advertising, 786 10000baseLR_Full); 787 ethtool_link_ksettings_add_link_mode(ks, supported, 788 1000baseX_Full); 789 ethtool_link_ksettings_add_link_mode(ks, advertising, 790 1000baseX_Full); 791 ethtool_link_ksettings_add_link_mode(ks, supported, 792 10000baseT_Full); 793 if (hw_link_info->module_type[2] & 794 I40E_MODULE_TYPE_1000BASE_SX || 795 hw_link_info->module_type[2] & 796 I40E_MODULE_TYPE_1000BASE_LX) { 797 ethtool_link_ksettings_add_link_mode(ks, supported, 798 1000baseT_Full); 799 if (hw_link_info->requested_speeds & 800 I40E_LINK_SPEED_1GB) 801 ethtool_link_ksettings_add_link_mode( 802 ks, advertising, 1000baseT_Full); 803 } 804 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB) 805 ethtool_link_ksettings_add_link_mode(ks, advertising, 806 10000baseT_Full); 807 break; 808 case I40E_PHY_TYPE_10GBASE_T: 809 case I40E_PHY_TYPE_5GBASE_T: 810 case I40E_PHY_TYPE_2_5GBASE_T: 811 case I40E_PHY_TYPE_1000BASE_T: 812 case I40E_PHY_TYPE_100BASE_TX: 813 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg); 814 ethtool_link_ksettings_add_link_mode(ks, supported, 815 10000baseT_Full); 816 ethtool_link_ksettings_add_link_mode(ks, supported, 817 5000baseT_Full); 818 ethtool_link_ksettings_add_link_mode(ks, supported, 819 2500baseT_Full); 820 ethtool_link_ksettings_add_link_mode(ks, supported, 821 1000baseT_Full); 822 ethtool_link_ksettings_add_link_mode(ks, supported, 823 100baseT_Full); 824 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg); 825 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB) 826 ethtool_link_ksettings_add_link_mode(ks, advertising, 827 10000baseT_Full); 828 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_5GB) 829 ethtool_link_ksettings_add_link_mode(ks, advertising, 830 5000baseT_Full); 831 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_2_5GB) 832 ethtool_link_ksettings_add_link_mode(ks, advertising, 833 2500baseT_Full); 834 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB) 835 ethtool_link_ksettings_add_link_mode(ks, advertising, 836 1000baseT_Full); 837 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_100MB) 838 ethtool_link_ksettings_add_link_mode(ks, advertising, 839 100baseT_Full); 840 break; 841 case I40E_PHY_TYPE_1000BASE_T_OPTICAL: 842 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg); 843 ethtool_link_ksettings_add_link_mode(ks, supported, 844 1000baseT_Full); 845 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg); 846 ethtool_link_ksettings_add_link_mode(ks, advertising, 847 1000baseT_Full); 848 break; 849 case I40E_PHY_TYPE_10GBASE_CR1_CU: 850 case I40E_PHY_TYPE_10GBASE_CR1: 851 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg); 852 ethtool_link_ksettings_add_link_mode(ks, supported, 853 10000baseT_Full); 854 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg); 855 ethtool_link_ksettings_add_link_mode(ks, advertising, 856 10000baseT_Full); 857 break; 858 case I40E_PHY_TYPE_XAUI: 859 case I40E_PHY_TYPE_XFI: 860 case I40E_PHY_TYPE_SFI: 861 case I40E_PHY_TYPE_10GBASE_SFPP_CU: 862 case I40E_PHY_TYPE_10GBASE_AOC: 863 ethtool_link_ksettings_add_link_mode(ks, supported, 864 10000baseT_Full); 865 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB) 866 ethtool_link_ksettings_add_link_mode(ks, advertising, 867 10000baseT_Full); 868 break; 869 case I40E_PHY_TYPE_SGMII: 870 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg); 871 ethtool_link_ksettings_add_link_mode(ks, supported, 872 1000baseT_Full); 873 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB) 874 ethtool_link_ksettings_add_link_mode(ks, advertising, 875 1000baseT_Full); 876 if (pf->hw_features & I40E_HW_100M_SGMII_CAPABLE) { 877 ethtool_link_ksettings_add_link_mode(ks, supported, 878 100baseT_Full); 879 if (hw_link_info->requested_speeds & 880 I40E_LINK_SPEED_100MB) 881 ethtool_link_ksettings_add_link_mode( 882 ks, advertising, 100baseT_Full); 883 } 884 break; 885 case I40E_PHY_TYPE_40GBASE_KR4: 886 case I40E_PHY_TYPE_25GBASE_KR: 887 case I40E_PHY_TYPE_20GBASE_KR2: 888 case I40E_PHY_TYPE_10GBASE_KR: 889 case I40E_PHY_TYPE_10GBASE_KX4: 890 case I40E_PHY_TYPE_1000BASE_KX: 891 ethtool_link_ksettings_add_link_mode(ks, supported, 892 40000baseKR4_Full); 893 ethtool_link_ksettings_add_link_mode(ks, supported, 894 25000baseKR_Full); 895 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_NONE); 896 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_RS); 897 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_BASER); 898 ethtool_link_ksettings_add_link_mode(ks, supported, 899 20000baseKR2_Full); 900 ethtool_link_ksettings_add_link_mode(ks, supported, 901 10000baseKR_Full); 902 ethtool_link_ksettings_add_link_mode(ks, supported, 903 10000baseKX4_Full); 904 ethtool_link_ksettings_add_link_mode(ks, supported, 905 1000baseKX_Full); 906 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg); 907 ethtool_link_ksettings_add_link_mode(ks, advertising, 908 40000baseKR4_Full); 909 ethtool_link_ksettings_add_link_mode(ks, advertising, 910 25000baseKR_Full); 911 ethtool_link_ksettings_add_link_mode(ks, advertising, FEC_NONE); 912 ethtool_link_ksettings_add_link_mode(ks, advertising, FEC_RS); 913 ethtool_link_ksettings_add_link_mode(ks, advertising, 914 FEC_BASER); 915 ethtool_link_ksettings_add_link_mode(ks, advertising, 916 20000baseKR2_Full); 917 ethtool_link_ksettings_add_link_mode(ks, advertising, 918 10000baseKR_Full); 919 ethtool_link_ksettings_add_link_mode(ks, advertising, 920 10000baseKX4_Full); 921 ethtool_link_ksettings_add_link_mode(ks, advertising, 922 1000baseKX_Full); 923 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg); 924 break; 925 case I40E_PHY_TYPE_25GBASE_CR: 926 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg); 927 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg); 928 ethtool_link_ksettings_add_link_mode(ks, supported, 929 25000baseCR_Full); 930 ethtool_link_ksettings_add_link_mode(ks, advertising, 931 25000baseCR_Full); 932 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_NONE); 933 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_RS); 934 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_BASER); 935 ethtool_link_ksettings_add_link_mode(ks, advertising, FEC_NONE); 936 ethtool_link_ksettings_add_link_mode(ks, advertising, FEC_RS); 937 ethtool_link_ksettings_add_link_mode(ks, advertising, 938 FEC_BASER); 939 break; 940 case I40E_PHY_TYPE_25GBASE_AOC: 941 case I40E_PHY_TYPE_25GBASE_ACC: 942 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg); 943 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg); 944 ethtool_link_ksettings_add_link_mode(ks, supported, 945 25000baseCR_Full); 946 ethtool_link_ksettings_add_link_mode(ks, advertising, 947 25000baseCR_Full); 948 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_NONE); 949 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_RS); 950 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_BASER); 951 ethtool_link_ksettings_add_link_mode(ks, advertising, FEC_NONE); 952 ethtool_link_ksettings_add_link_mode(ks, advertising, FEC_RS); 953 ethtool_link_ksettings_add_link_mode(ks, advertising, 954 FEC_BASER); 955 ethtool_link_ksettings_add_link_mode(ks, supported, 956 10000baseCR_Full); 957 ethtool_link_ksettings_add_link_mode(ks, advertising, 958 10000baseCR_Full); 959 break; 960 default: 961 /* if we got here and link is up something bad is afoot */ 962 netdev_info(netdev, 963 "WARNING: Link is up but PHY type 0x%x is not recognized.\n", 964 hw_link_info->phy_type); 965 } 966 967 /* Now that we've worked out everything that could be supported by the 968 * current PHY type, get what is supported by the NVM and intersect 969 * them to get what is truly supported 970 */ 971 memset(&cap_ksettings, 0, sizeof(struct ethtool_link_ksettings)); 972 i40e_phy_type_to_ethtool(pf, &cap_ksettings); 973 ethtool_intersect_link_masks(ks, &cap_ksettings); 974 975 /* Set speed and duplex */ 976 switch (link_speed) { 977 case I40E_LINK_SPEED_40GB: 978 ks->base.speed = SPEED_40000; 979 break; 980 case I40E_LINK_SPEED_25GB: 981 ks->base.speed = SPEED_25000; 982 break; 983 case I40E_LINK_SPEED_20GB: 984 ks->base.speed = SPEED_20000; 985 break; 986 case I40E_LINK_SPEED_10GB: 987 ks->base.speed = SPEED_10000; 988 break; 989 case I40E_LINK_SPEED_5GB: 990 ks->base.speed = SPEED_5000; 991 break; 992 case I40E_LINK_SPEED_2_5GB: 993 ks->base.speed = SPEED_2500; 994 break; 995 case I40E_LINK_SPEED_1GB: 996 ks->base.speed = SPEED_1000; 997 break; 998 case I40E_LINK_SPEED_100MB: 999 ks->base.speed = SPEED_100; 1000 break; 1001 default: 1002 ks->base.speed = SPEED_UNKNOWN; 1003 break; 1004 } 1005 ks->base.duplex = DUPLEX_FULL; 1006 } 1007 1008 /** 1009 * i40e_get_settings_link_down - Get the Link settings for when link is down 1010 * @hw: hw structure 1011 * @ks: ethtool ksettings to fill in 1012 * @pf: pointer to physical function struct 1013 * 1014 * Reports link settings that can be determined when link is down 1015 **/ 1016 static void i40e_get_settings_link_down(struct i40e_hw *hw, 1017 struct ethtool_link_ksettings *ks, 1018 struct i40e_pf *pf) 1019 { 1020 /* link is down and the driver needs to fall back on 1021 * supported phy types to figure out what info to display 1022 */ 1023 i40e_phy_type_to_ethtool(pf, ks); 1024 1025 /* With no link speed and duplex are unknown */ 1026 ks->base.speed = SPEED_UNKNOWN; 1027 ks->base.duplex = DUPLEX_UNKNOWN; 1028 } 1029 1030 /** 1031 * i40e_get_link_ksettings - Get Link Speed and Duplex settings 1032 * @netdev: network interface device structure 1033 * @ks: ethtool ksettings 1034 * 1035 * Reports speed/duplex settings based on media_type 1036 **/ 1037 static int i40e_get_link_ksettings(struct net_device *netdev, 1038 struct ethtool_link_ksettings *ks) 1039 { 1040 struct i40e_netdev_priv *np = netdev_priv(netdev); 1041 struct i40e_pf *pf = np->vsi->back; 1042 struct i40e_hw *hw = &pf->hw; 1043 struct i40e_link_status *hw_link_info = &hw->phy.link_info; 1044 bool link_up = hw_link_info->link_info & I40E_AQ_LINK_UP; 1045 1046 ethtool_link_ksettings_zero_link_mode(ks, supported); 1047 ethtool_link_ksettings_zero_link_mode(ks, advertising); 1048 1049 if (link_up) 1050 i40e_get_settings_link_up(hw, ks, netdev, pf); 1051 else 1052 i40e_get_settings_link_down(hw, ks, pf); 1053 1054 /* Now set the settings that don't rely on link being up/down */ 1055 /* Set autoneg settings */ 1056 ks->base.autoneg = ((hw_link_info->an_info & I40E_AQ_AN_COMPLETED) ? 1057 AUTONEG_ENABLE : AUTONEG_DISABLE); 1058 1059 /* Set media type settings */ 1060 switch (hw->phy.media_type) { 1061 case I40E_MEDIA_TYPE_BACKPLANE: 1062 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg); 1063 ethtool_link_ksettings_add_link_mode(ks, supported, Backplane); 1064 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg); 1065 ethtool_link_ksettings_add_link_mode(ks, advertising, 1066 Backplane); 1067 ks->base.port = PORT_NONE; 1068 break; 1069 case I40E_MEDIA_TYPE_BASET: 1070 ethtool_link_ksettings_add_link_mode(ks, supported, TP); 1071 ethtool_link_ksettings_add_link_mode(ks, advertising, TP); 1072 ks->base.port = PORT_TP; 1073 break; 1074 case I40E_MEDIA_TYPE_DA: 1075 case I40E_MEDIA_TYPE_CX4: 1076 ethtool_link_ksettings_add_link_mode(ks, supported, FIBRE); 1077 ethtool_link_ksettings_add_link_mode(ks, advertising, FIBRE); 1078 ks->base.port = PORT_DA; 1079 break; 1080 case I40E_MEDIA_TYPE_FIBER: 1081 ethtool_link_ksettings_add_link_mode(ks, supported, FIBRE); 1082 ethtool_link_ksettings_add_link_mode(ks, advertising, FIBRE); 1083 ks->base.port = PORT_FIBRE; 1084 break; 1085 case I40E_MEDIA_TYPE_UNKNOWN: 1086 default: 1087 ks->base.port = PORT_OTHER; 1088 break; 1089 } 1090 1091 /* Set flow control settings */ 1092 ethtool_link_ksettings_add_link_mode(ks, supported, Pause); 1093 1094 switch (hw->fc.requested_mode) { 1095 case I40E_FC_FULL: 1096 ethtool_link_ksettings_add_link_mode(ks, advertising, Pause); 1097 break; 1098 case I40E_FC_TX_PAUSE: 1099 ethtool_link_ksettings_add_link_mode(ks, advertising, 1100 Asym_Pause); 1101 break; 1102 case I40E_FC_RX_PAUSE: 1103 ethtool_link_ksettings_add_link_mode(ks, advertising, Pause); 1104 ethtool_link_ksettings_add_link_mode(ks, advertising, 1105 Asym_Pause); 1106 break; 1107 default: 1108 ethtool_link_ksettings_del_link_mode(ks, advertising, Pause); 1109 ethtool_link_ksettings_del_link_mode(ks, advertising, 1110 Asym_Pause); 1111 break; 1112 } 1113 1114 return 0; 1115 } 1116 1117 /** 1118 * i40e_set_link_ksettings - Set Speed and Duplex 1119 * @netdev: network interface device structure 1120 * @ks: ethtool ksettings 1121 * 1122 * Set speed/duplex per media_types advertised/forced 1123 **/ 1124 static int i40e_set_link_ksettings(struct net_device *netdev, 1125 const struct ethtool_link_ksettings *ks) 1126 { 1127 struct i40e_netdev_priv *np = netdev_priv(netdev); 1128 struct i40e_aq_get_phy_abilities_resp abilities; 1129 struct ethtool_link_ksettings safe_ks; 1130 struct ethtool_link_ksettings copy_ks; 1131 struct i40e_aq_set_phy_config config; 1132 struct i40e_pf *pf = np->vsi->back; 1133 struct i40e_vsi *vsi = np->vsi; 1134 struct i40e_hw *hw = &pf->hw; 1135 bool autoneg_changed = false; 1136 i40e_status status = 0; 1137 int timeout = 50; 1138 int err = 0; 1139 u8 autoneg; 1140 1141 /* Changing port settings is not supported if this isn't the 1142 * port's controlling PF 1143 */ 1144 if (hw->partition_id != 1) { 1145 i40e_partition_setting_complaint(pf); 1146 return -EOPNOTSUPP; 1147 } 1148 if (vsi != pf->vsi[pf->lan_vsi]) 1149 return -EOPNOTSUPP; 1150 if (hw->phy.media_type != I40E_MEDIA_TYPE_BASET && 1151 hw->phy.media_type != I40E_MEDIA_TYPE_FIBER && 1152 hw->phy.media_type != I40E_MEDIA_TYPE_BACKPLANE && 1153 hw->phy.media_type != I40E_MEDIA_TYPE_DA && 1154 hw->phy.link_info.link_info & I40E_AQ_LINK_UP) 1155 return -EOPNOTSUPP; 1156 if (hw->device_id == I40E_DEV_ID_KX_B || 1157 hw->device_id == I40E_DEV_ID_KX_C || 1158 hw->device_id == I40E_DEV_ID_20G_KR2 || 1159 hw->device_id == I40E_DEV_ID_20G_KR2_A || 1160 hw->device_id == I40E_DEV_ID_25G_B || 1161 hw->device_id == I40E_DEV_ID_KX_X722) { 1162 netdev_info(netdev, "Changing settings is not supported on backplane.\n"); 1163 return -EOPNOTSUPP; 1164 } 1165 1166 /* copy the ksettings to copy_ks to avoid modifying the origin */ 1167 memcpy(©_ks, ks, sizeof(struct ethtool_link_ksettings)); 1168 1169 /* save autoneg out of ksettings */ 1170 autoneg = copy_ks.base.autoneg; 1171 1172 /* get our own copy of the bits to check against */ 1173 memset(&safe_ks, 0, sizeof(struct ethtool_link_ksettings)); 1174 safe_ks.base.cmd = copy_ks.base.cmd; 1175 safe_ks.base.link_mode_masks_nwords = 1176 copy_ks.base.link_mode_masks_nwords; 1177 i40e_get_link_ksettings(netdev, &safe_ks); 1178 1179 /* Get link modes supported by hardware and check against modes 1180 * requested by the user. Return an error if unsupported mode was set. 1181 */ 1182 if (!bitmap_subset(copy_ks.link_modes.advertising, 1183 safe_ks.link_modes.supported, 1184 __ETHTOOL_LINK_MODE_MASK_NBITS)) 1185 return -EINVAL; 1186 1187 /* set autoneg back to what it currently is */ 1188 copy_ks.base.autoneg = safe_ks.base.autoneg; 1189 1190 /* If copy_ks.base and safe_ks.base are not the same now, then they are 1191 * trying to set something that we do not support. 1192 */ 1193 if (memcmp(©_ks.base, &safe_ks.base, 1194 sizeof(struct ethtool_link_settings))) 1195 return -EOPNOTSUPP; 1196 1197 while (test_and_set_bit(__I40E_CONFIG_BUSY, pf->state)) { 1198 timeout--; 1199 if (!timeout) 1200 return -EBUSY; 1201 usleep_range(1000, 2000); 1202 } 1203 1204 /* Get the current phy config */ 1205 status = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, 1206 NULL); 1207 if (status) { 1208 err = -EAGAIN; 1209 goto done; 1210 } 1211 1212 /* Copy abilities to config in case autoneg is not 1213 * set below 1214 */ 1215 memset(&config, 0, sizeof(struct i40e_aq_set_phy_config)); 1216 config.abilities = abilities.abilities; 1217 1218 /* Check autoneg */ 1219 if (autoneg == AUTONEG_ENABLE) { 1220 /* If autoneg was not already enabled */ 1221 if (!(hw->phy.link_info.an_info & I40E_AQ_AN_COMPLETED)) { 1222 /* If autoneg is not supported, return error */ 1223 if (!ethtool_link_ksettings_test_link_mode(&safe_ks, 1224 supported, 1225 Autoneg)) { 1226 netdev_info(netdev, "Autoneg not supported on this phy\n"); 1227 err = -EINVAL; 1228 goto done; 1229 } 1230 /* Autoneg is allowed to change */ 1231 config.abilities = abilities.abilities | 1232 I40E_AQ_PHY_ENABLE_AN; 1233 autoneg_changed = true; 1234 } 1235 } else { 1236 /* If autoneg is currently enabled */ 1237 if (hw->phy.link_info.an_info & I40E_AQ_AN_COMPLETED) { 1238 /* If autoneg is supported 10GBASE_T is the only PHY 1239 * that can disable it, so otherwise return error 1240 */ 1241 if (ethtool_link_ksettings_test_link_mode(&safe_ks, 1242 supported, 1243 Autoneg) && 1244 hw->phy.link_info.phy_type != 1245 I40E_PHY_TYPE_10GBASE_T) { 1246 netdev_info(netdev, "Autoneg cannot be disabled on this phy\n"); 1247 err = -EINVAL; 1248 goto done; 1249 } 1250 /* Autoneg is allowed to change */ 1251 config.abilities = abilities.abilities & 1252 ~I40E_AQ_PHY_ENABLE_AN; 1253 autoneg_changed = true; 1254 } 1255 } 1256 1257 if (ethtool_link_ksettings_test_link_mode(ks, advertising, 1258 100baseT_Full)) 1259 config.link_speed |= I40E_LINK_SPEED_100MB; 1260 if (ethtool_link_ksettings_test_link_mode(ks, advertising, 1261 1000baseT_Full) || 1262 ethtool_link_ksettings_test_link_mode(ks, advertising, 1263 1000baseX_Full) || 1264 ethtool_link_ksettings_test_link_mode(ks, advertising, 1265 1000baseKX_Full)) 1266 config.link_speed |= I40E_LINK_SPEED_1GB; 1267 if (ethtool_link_ksettings_test_link_mode(ks, advertising, 1268 10000baseT_Full) || 1269 ethtool_link_ksettings_test_link_mode(ks, advertising, 1270 10000baseKX4_Full) || 1271 ethtool_link_ksettings_test_link_mode(ks, advertising, 1272 10000baseKR_Full) || 1273 ethtool_link_ksettings_test_link_mode(ks, advertising, 1274 10000baseCR_Full) || 1275 ethtool_link_ksettings_test_link_mode(ks, advertising, 1276 10000baseSR_Full) || 1277 ethtool_link_ksettings_test_link_mode(ks, advertising, 1278 10000baseLR_Full)) 1279 config.link_speed |= I40E_LINK_SPEED_10GB; 1280 if (ethtool_link_ksettings_test_link_mode(ks, advertising, 1281 2500baseT_Full)) 1282 config.link_speed |= I40E_LINK_SPEED_2_5GB; 1283 if (ethtool_link_ksettings_test_link_mode(ks, advertising, 1284 5000baseT_Full)) 1285 config.link_speed |= I40E_LINK_SPEED_5GB; 1286 if (ethtool_link_ksettings_test_link_mode(ks, advertising, 1287 20000baseKR2_Full)) 1288 config.link_speed |= I40E_LINK_SPEED_20GB; 1289 if (ethtool_link_ksettings_test_link_mode(ks, advertising, 1290 25000baseCR_Full) || 1291 ethtool_link_ksettings_test_link_mode(ks, advertising, 1292 25000baseKR_Full) || 1293 ethtool_link_ksettings_test_link_mode(ks, advertising, 1294 25000baseSR_Full)) 1295 config.link_speed |= I40E_LINK_SPEED_25GB; 1296 if (ethtool_link_ksettings_test_link_mode(ks, advertising, 1297 40000baseKR4_Full) || 1298 ethtool_link_ksettings_test_link_mode(ks, advertising, 1299 40000baseCR4_Full) || 1300 ethtool_link_ksettings_test_link_mode(ks, advertising, 1301 40000baseSR4_Full) || 1302 ethtool_link_ksettings_test_link_mode(ks, advertising, 1303 40000baseLR4_Full)) 1304 config.link_speed |= I40E_LINK_SPEED_40GB; 1305 1306 /* If speed didn't get set, set it to what it currently is. 1307 * This is needed because if advertise is 0 (as it is when autoneg 1308 * is disabled) then speed won't get set. 1309 */ 1310 if (!config.link_speed) 1311 config.link_speed = abilities.link_speed; 1312 if (autoneg_changed || abilities.link_speed != config.link_speed) { 1313 /* copy over the rest of the abilities */ 1314 config.phy_type = abilities.phy_type; 1315 config.phy_type_ext = abilities.phy_type_ext; 1316 config.eee_capability = abilities.eee_capability; 1317 config.eeer = abilities.eeer_val; 1318 config.low_power_ctrl = abilities.d3_lpan; 1319 config.fec_config = abilities.fec_cfg_curr_mod_ext_info & 1320 I40E_AQ_PHY_FEC_CONFIG_MASK; 1321 1322 /* save the requested speeds */ 1323 hw->phy.link_info.requested_speeds = config.link_speed; 1324 /* set link and auto negotiation so changes take effect */ 1325 config.abilities |= I40E_AQ_PHY_ENABLE_ATOMIC_LINK; 1326 /* If link is up put link down */ 1327 if (hw->phy.link_info.link_info & I40E_AQ_LINK_UP) { 1328 /* Tell the OS link is going down, the link will go 1329 * back up when fw says it is ready asynchronously 1330 */ 1331 i40e_print_link_message(vsi, false); 1332 netif_carrier_off(netdev); 1333 netif_tx_stop_all_queues(netdev); 1334 } 1335 1336 /* make the aq call */ 1337 status = i40e_aq_set_phy_config(hw, &config, NULL); 1338 if (status) { 1339 netdev_info(netdev, 1340 "Set phy config failed, err %s aq_err %s\n", 1341 i40e_stat_str(hw, status), 1342 i40e_aq_str(hw, hw->aq.asq_last_status)); 1343 err = -EAGAIN; 1344 goto done; 1345 } 1346 1347 status = i40e_update_link_info(hw); 1348 if (status) 1349 netdev_dbg(netdev, 1350 "Updating link info failed with err %s aq_err %s\n", 1351 i40e_stat_str(hw, status), 1352 i40e_aq_str(hw, hw->aq.asq_last_status)); 1353 1354 } else { 1355 netdev_info(netdev, "Nothing changed, exiting without setting anything.\n"); 1356 } 1357 1358 done: 1359 clear_bit(__I40E_CONFIG_BUSY, pf->state); 1360 1361 return err; 1362 } 1363 1364 static int i40e_set_fec_cfg(struct net_device *netdev, u8 fec_cfg) 1365 { 1366 struct i40e_netdev_priv *np = netdev_priv(netdev); 1367 struct i40e_aq_get_phy_abilities_resp abilities; 1368 struct i40e_pf *pf = np->vsi->back; 1369 struct i40e_hw *hw = &pf->hw; 1370 i40e_status status = 0; 1371 u32 flags = 0; 1372 int err = 0; 1373 1374 flags = READ_ONCE(pf->flags); 1375 i40e_set_fec_in_flags(fec_cfg, &flags); 1376 1377 /* Get the current phy config */ 1378 memset(&abilities, 0, sizeof(abilities)); 1379 status = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, 1380 NULL); 1381 if (status) { 1382 err = -EAGAIN; 1383 goto done; 1384 } 1385 1386 if (abilities.fec_cfg_curr_mod_ext_info != fec_cfg) { 1387 struct i40e_aq_set_phy_config config; 1388 1389 memset(&config, 0, sizeof(config)); 1390 config.phy_type = abilities.phy_type; 1391 config.abilities = abilities.abilities; 1392 config.phy_type_ext = abilities.phy_type_ext; 1393 config.link_speed = abilities.link_speed; 1394 config.eee_capability = abilities.eee_capability; 1395 config.eeer = abilities.eeer_val; 1396 config.low_power_ctrl = abilities.d3_lpan; 1397 config.fec_config = fec_cfg & I40E_AQ_PHY_FEC_CONFIG_MASK; 1398 status = i40e_aq_set_phy_config(hw, &config, NULL); 1399 if (status) { 1400 netdev_info(netdev, 1401 "Set phy config failed, err %s aq_err %s\n", 1402 i40e_stat_str(hw, status), 1403 i40e_aq_str(hw, hw->aq.asq_last_status)); 1404 err = -EAGAIN; 1405 goto done; 1406 } 1407 pf->flags = flags; 1408 status = i40e_update_link_info(hw); 1409 if (status) 1410 /* debug level message only due to relation to the link 1411 * itself rather than to the FEC settings 1412 * (e.g. no physical connection etc.) 1413 */ 1414 netdev_dbg(netdev, 1415 "Updating link info failed with err %s aq_err %s\n", 1416 i40e_stat_str(hw, status), 1417 i40e_aq_str(hw, hw->aq.asq_last_status)); 1418 } 1419 1420 done: 1421 return err; 1422 } 1423 1424 static int i40e_get_fec_param(struct net_device *netdev, 1425 struct ethtool_fecparam *fecparam) 1426 { 1427 struct i40e_netdev_priv *np = netdev_priv(netdev); 1428 struct i40e_aq_get_phy_abilities_resp abilities; 1429 struct i40e_pf *pf = np->vsi->back; 1430 struct i40e_hw *hw = &pf->hw; 1431 i40e_status status = 0; 1432 int err = 0; 1433 1434 /* Get the current phy config */ 1435 memset(&abilities, 0, sizeof(abilities)); 1436 status = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, 1437 NULL); 1438 if (status) { 1439 err = -EAGAIN; 1440 goto done; 1441 } 1442 1443 fecparam->fec = 0; 1444 if (abilities.fec_cfg_curr_mod_ext_info & I40E_AQ_SET_FEC_AUTO) 1445 fecparam->fec |= ETHTOOL_FEC_AUTO; 1446 if ((abilities.fec_cfg_curr_mod_ext_info & 1447 I40E_AQ_SET_FEC_REQUEST_RS) || 1448 (abilities.fec_cfg_curr_mod_ext_info & 1449 I40E_AQ_SET_FEC_ABILITY_RS)) 1450 fecparam->fec |= ETHTOOL_FEC_RS; 1451 if ((abilities.fec_cfg_curr_mod_ext_info & 1452 I40E_AQ_SET_FEC_REQUEST_KR) || 1453 (abilities.fec_cfg_curr_mod_ext_info & I40E_AQ_SET_FEC_ABILITY_KR)) 1454 fecparam->fec |= ETHTOOL_FEC_BASER; 1455 if (abilities.fec_cfg_curr_mod_ext_info == 0) 1456 fecparam->fec |= ETHTOOL_FEC_OFF; 1457 1458 if (hw->phy.link_info.fec_info & I40E_AQ_CONFIG_FEC_KR_ENA) 1459 fecparam->active_fec = ETHTOOL_FEC_BASER; 1460 else if (hw->phy.link_info.fec_info & I40E_AQ_CONFIG_FEC_RS_ENA) 1461 fecparam->active_fec = ETHTOOL_FEC_RS; 1462 else 1463 fecparam->active_fec = ETHTOOL_FEC_OFF; 1464 done: 1465 return err; 1466 } 1467 1468 static int i40e_set_fec_param(struct net_device *netdev, 1469 struct ethtool_fecparam *fecparam) 1470 { 1471 struct i40e_netdev_priv *np = netdev_priv(netdev); 1472 struct i40e_pf *pf = np->vsi->back; 1473 struct i40e_hw *hw = &pf->hw; 1474 u8 fec_cfg = 0; 1475 int err = 0; 1476 1477 if (hw->device_id != I40E_DEV_ID_25G_SFP28 && 1478 hw->device_id != I40E_DEV_ID_25G_B) { 1479 err = -EPERM; 1480 goto done; 1481 } 1482 1483 switch (fecparam->fec) { 1484 case ETHTOOL_FEC_AUTO: 1485 fec_cfg = I40E_AQ_SET_FEC_AUTO; 1486 break; 1487 case ETHTOOL_FEC_RS: 1488 fec_cfg = (I40E_AQ_SET_FEC_REQUEST_RS | 1489 I40E_AQ_SET_FEC_ABILITY_RS); 1490 break; 1491 case ETHTOOL_FEC_BASER: 1492 fec_cfg = (I40E_AQ_SET_FEC_REQUEST_KR | 1493 I40E_AQ_SET_FEC_ABILITY_KR); 1494 break; 1495 case ETHTOOL_FEC_OFF: 1496 case ETHTOOL_FEC_NONE: 1497 fec_cfg = 0; 1498 break; 1499 default: 1500 dev_warn(&pf->pdev->dev, "Unsupported FEC mode: %d", 1501 fecparam->fec); 1502 err = -EINVAL; 1503 goto done; 1504 } 1505 1506 err = i40e_set_fec_cfg(netdev, fec_cfg); 1507 1508 done: 1509 return err; 1510 } 1511 1512 static int i40e_nway_reset(struct net_device *netdev) 1513 { 1514 /* restart autonegotiation */ 1515 struct i40e_netdev_priv *np = netdev_priv(netdev); 1516 struct i40e_pf *pf = np->vsi->back; 1517 struct i40e_hw *hw = &pf->hw; 1518 bool link_up = hw->phy.link_info.link_info & I40E_AQ_LINK_UP; 1519 i40e_status ret = 0; 1520 1521 ret = i40e_aq_set_link_restart_an(hw, link_up, NULL); 1522 if (ret) { 1523 netdev_info(netdev, "link restart failed, err %s aq_err %s\n", 1524 i40e_stat_str(hw, ret), 1525 i40e_aq_str(hw, hw->aq.asq_last_status)); 1526 return -EIO; 1527 } 1528 1529 return 0; 1530 } 1531 1532 /** 1533 * i40e_get_pauseparam - Get Flow Control status 1534 * @netdev: netdevice structure 1535 * @pause: buffer to return pause parameters 1536 * 1537 * Return tx/rx-pause status 1538 **/ 1539 static void i40e_get_pauseparam(struct net_device *netdev, 1540 struct ethtool_pauseparam *pause) 1541 { 1542 struct i40e_netdev_priv *np = netdev_priv(netdev); 1543 struct i40e_pf *pf = np->vsi->back; 1544 struct i40e_hw *hw = &pf->hw; 1545 struct i40e_link_status *hw_link_info = &hw->phy.link_info; 1546 struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config; 1547 1548 pause->autoneg = 1549 ((hw_link_info->an_info & I40E_AQ_AN_COMPLETED) ? 1550 AUTONEG_ENABLE : AUTONEG_DISABLE); 1551 1552 /* PFC enabled so report LFC as off */ 1553 if (dcbx_cfg->pfc.pfcenable) { 1554 pause->rx_pause = 0; 1555 pause->tx_pause = 0; 1556 return; 1557 } 1558 1559 if (hw->fc.current_mode == I40E_FC_RX_PAUSE) { 1560 pause->rx_pause = 1; 1561 } else if (hw->fc.current_mode == I40E_FC_TX_PAUSE) { 1562 pause->tx_pause = 1; 1563 } else if (hw->fc.current_mode == I40E_FC_FULL) { 1564 pause->rx_pause = 1; 1565 pause->tx_pause = 1; 1566 } 1567 } 1568 1569 /** 1570 * i40e_set_pauseparam - Set Flow Control parameter 1571 * @netdev: network interface device structure 1572 * @pause: return tx/rx flow control status 1573 **/ 1574 static int i40e_set_pauseparam(struct net_device *netdev, 1575 struct ethtool_pauseparam *pause) 1576 { 1577 struct i40e_netdev_priv *np = netdev_priv(netdev); 1578 struct i40e_pf *pf = np->vsi->back; 1579 struct i40e_vsi *vsi = np->vsi; 1580 struct i40e_hw *hw = &pf->hw; 1581 struct i40e_link_status *hw_link_info = &hw->phy.link_info; 1582 struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config; 1583 bool link_up = hw_link_info->link_info & I40E_AQ_LINK_UP; 1584 i40e_status status; 1585 u8 aq_failures; 1586 int err = 0; 1587 u32 is_an; 1588 1589 /* Changing the port's flow control is not supported if this isn't the 1590 * port's controlling PF 1591 */ 1592 if (hw->partition_id != 1) { 1593 i40e_partition_setting_complaint(pf); 1594 return -EOPNOTSUPP; 1595 } 1596 1597 if (vsi != pf->vsi[pf->lan_vsi]) 1598 return -EOPNOTSUPP; 1599 1600 is_an = hw_link_info->an_info & I40E_AQ_AN_COMPLETED; 1601 if (pause->autoneg != is_an) { 1602 netdev_info(netdev, "To change autoneg please use: ethtool -s <dev> autoneg <on|off>\n"); 1603 return -EOPNOTSUPP; 1604 } 1605 1606 /* If we have link and don't have autoneg */ 1607 if (!test_bit(__I40E_DOWN, pf->state) && !is_an) { 1608 /* Send message that it might not necessarily work*/ 1609 netdev_info(netdev, "Autoneg did not complete so changing settings may not result in an actual change.\n"); 1610 } 1611 1612 if (dcbx_cfg->pfc.pfcenable) { 1613 netdev_info(netdev, 1614 "Priority flow control enabled. Cannot set link flow control.\n"); 1615 return -EOPNOTSUPP; 1616 } 1617 1618 if (pause->rx_pause && pause->tx_pause) 1619 hw->fc.requested_mode = I40E_FC_FULL; 1620 else if (pause->rx_pause && !pause->tx_pause) 1621 hw->fc.requested_mode = I40E_FC_RX_PAUSE; 1622 else if (!pause->rx_pause && pause->tx_pause) 1623 hw->fc.requested_mode = I40E_FC_TX_PAUSE; 1624 else if (!pause->rx_pause && !pause->tx_pause) 1625 hw->fc.requested_mode = I40E_FC_NONE; 1626 else 1627 return -EINVAL; 1628 1629 /* Tell the OS link is going down, the link will go back up when fw 1630 * says it is ready asynchronously 1631 */ 1632 i40e_print_link_message(vsi, false); 1633 netif_carrier_off(netdev); 1634 netif_tx_stop_all_queues(netdev); 1635 1636 /* Set the fc mode and only restart an if link is up*/ 1637 status = i40e_set_fc(hw, &aq_failures, link_up); 1638 1639 if (aq_failures & I40E_SET_FC_AQ_FAIL_GET) { 1640 netdev_info(netdev, "Set fc failed on the get_phy_capabilities call with err %s aq_err %s\n", 1641 i40e_stat_str(hw, status), 1642 i40e_aq_str(hw, hw->aq.asq_last_status)); 1643 err = -EAGAIN; 1644 } 1645 if (aq_failures & I40E_SET_FC_AQ_FAIL_SET) { 1646 netdev_info(netdev, "Set fc failed on the set_phy_config call with err %s aq_err %s\n", 1647 i40e_stat_str(hw, status), 1648 i40e_aq_str(hw, hw->aq.asq_last_status)); 1649 err = -EAGAIN; 1650 } 1651 if (aq_failures & I40E_SET_FC_AQ_FAIL_UPDATE) { 1652 netdev_info(netdev, "Set fc failed on the get_link_info call with err %s aq_err %s\n", 1653 i40e_stat_str(hw, status), 1654 i40e_aq_str(hw, hw->aq.asq_last_status)); 1655 err = -EAGAIN; 1656 } 1657 1658 if (!test_bit(__I40E_DOWN, pf->state) && is_an) { 1659 /* Give it a little more time to try to come back */ 1660 msleep(75); 1661 if (!test_bit(__I40E_DOWN, pf->state)) 1662 return i40e_nway_reset(netdev); 1663 } 1664 1665 return err; 1666 } 1667 1668 static u32 i40e_get_msglevel(struct net_device *netdev) 1669 { 1670 struct i40e_netdev_priv *np = netdev_priv(netdev); 1671 struct i40e_pf *pf = np->vsi->back; 1672 u32 debug_mask = pf->hw.debug_mask; 1673 1674 if (debug_mask) 1675 netdev_info(netdev, "i40e debug_mask: 0x%08X\n", debug_mask); 1676 1677 return pf->msg_enable; 1678 } 1679 1680 static void i40e_set_msglevel(struct net_device *netdev, u32 data) 1681 { 1682 struct i40e_netdev_priv *np = netdev_priv(netdev); 1683 struct i40e_pf *pf = np->vsi->back; 1684 1685 if (I40E_DEBUG_USER & data) 1686 pf->hw.debug_mask = data; 1687 else 1688 pf->msg_enable = data; 1689 } 1690 1691 static int i40e_get_regs_len(struct net_device *netdev) 1692 { 1693 int reg_count = 0; 1694 int i; 1695 1696 for (i = 0; i40e_reg_list[i].offset != 0; i++) 1697 reg_count += i40e_reg_list[i].elements; 1698 1699 return reg_count * sizeof(u32); 1700 } 1701 1702 static void i40e_get_regs(struct net_device *netdev, struct ethtool_regs *regs, 1703 void *p) 1704 { 1705 struct i40e_netdev_priv *np = netdev_priv(netdev); 1706 struct i40e_pf *pf = np->vsi->back; 1707 struct i40e_hw *hw = &pf->hw; 1708 u32 *reg_buf = p; 1709 unsigned int i, j, ri; 1710 u32 reg; 1711 1712 /* Tell ethtool which driver-version-specific regs output we have. 1713 * 1714 * At some point, if we have ethtool doing special formatting of 1715 * this data, it will rely on this version number to know how to 1716 * interpret things. Hence, this needs to be updated if/when the 1717 * diags register table is changed. 1718 */ 1719 regs->version = 1; 1720 1721 /* loop through the diags reg table for what to print */ 1722 ri = 0; 1723 for (i = 0; i40e_reg_list[i].offset != 0; i++) { 1724 for (j = 0; j < i40e_reg_list[i].elements; j++) { 1725 reg = i40e_reg_list[i].offset 1726 + (j * i40e_reg_list[i].stride); 1727 reg_buf[ri++] = rd32(hw, reg); 1728 } 1729 } 1730 1731 } 1732 1733 static int i40e_get_eeprom(struct net_device *netdev, 1734 struct ethtool_eeprom *eeprom, u8 *bytes) 1735 { 1736 struct i40e_netdev_priv *np = netdev_priv(netdev); 1737 struct i40e_hw *hw = &np->vsi->back->hw; 1738 struct i40e_pf *pf = np->vsi->back; 1739 int ret_val = 0, len, offset; 1740 u8 *eeprom_buff; 1741 u16 i, sectors; 1742 bool last; 1743 u32 magic; 1744 1745 #define I40E_NVM_SECTOR_SIZE 4096 1746 if (eeprom->len == 0) 1747 return -EINVAL; 1748 1749 /* check for NVMUpdate access method */ 1750 magic = hw->vendor_id | (hw->device_id << 16); 1751 if (eeprom->magic && eeprom->magic != magic) { 1752 struct i40e_nvm_access *cmd = (struct i40e_nvm_access *)eeprom; 1753 int errno = 0; 1754 1755 /* make sure it is the right magic for NVMUpdate */ 1756 if ((eeprom->magic >> 16) != hw->device_id) 1757 errno = -EINVAL; 1758 else if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) || 1759 test_bit(__I40E_RESET_INTR_RECEIVED, pf->state)) 1760 errno = -EBUSY; 1761 else 1762 ret_val = i40e_nvmupd_command(hw, cmd, bytes, &errno); 1763 1764 if ((errno || ret_val) && (hw->debug_mask & I40E_DEBUG_NVM)) 1765 dev_info(&pf->pdev->dev, 1766 "NVMUpdate read failed err=%d status=0x%x errno=%d module=%d offset=0x%x size=%d\n", 1767 ret_val, hw->aq.asq_last_status, errno, 1768 (u8)(cmd->config & I40E_NVM_MOD_PNT_MASK), 1769 cmd->offset, cmd->data_size); 1770 1771 return errno; 1772 } 1773 1774 /* normal ethtool get_eeprom support */ 1775 eeprom->magic = hw->vendor_id | (hw->device_id << 16); 1776 1777 eeprom_buff = kzalloc(eeprom->len, GFP_KERNEL); 1778 if (!eeprom_buff) 1779 return -ENOMEM; 1780 1781 ret_val = i40e_acquire_nvm(hw, I40E_RESOURCE_READ); 1782 if (ret_val) { 1783 dev_info(&pf->pdev->dev, 1784 "Failed Acquiring NVM resource for read err=%d status=0x%x\n", 1785 ret_val, hw->aq.asq_last_status); 1786 goto free_buff; 1787 } 1788 1789 sectors = eeprom->len / I40E_NVM_SECTOR_SIZE; 1790 sectors += (eeprom->len % I40E_NVM_SECTOR_SIZE) ? 1 : 0; 1791 len = I40E_NVM_SECTOR_SIZE; 1792 last = false; 1793 for (i = 0; i < sectors; i++) { 1794 if (i == (sectors - 1)) { 1795 len = eeprom->len - (I40E_NVM_SECTOR_SIZE * i); 1796 last = true; 1797 } 1798 offset = eeprom->offset + (I40E_NVM_SECTOR_SIZE * i), 1799 ret_val = i40e_aq_read_nvm(hw, 0x0, offset, len, 1800 (u8 *)eeprom_buff + (I40E_NVM_SECTOR_SIZE * i), 1801 last, NULL); 1802 if (ret_val && hw->aq.asq_last_status == I40E_AQ_RC_EPERM) { 1803 dev_info(&pf->pdev->dev, 1804 "read NVM failed, invalid offset 0x%x\n", 1805 offset); 1806 break; 1807 } else if (ret_val && 1808 hw->aq.asq_last_status == I40E_AQ_RC_EACCES) { 1809 dev_info(&pf->pdev->dev, 1810 "read NVM failed, access, offset 0x%x\n", 1811 offset); 1812 break; 1813 } else if (ret_val) { 1814 dev_info(&pf->pdev->dev, 1815 "read NVM failed offset %d err=%d status=0x%x\n", 1816 offset, ret_val, hw->aq.asq_last_status); 1817 break; 1818 } 1819 } 1820 1821 i40e_release_nvm(hw); 1822 memcpy(bytes, (u8 *)eeprom_buff, eeprom->len); 1823 free_buff: 1824 kfree(eeprom_buff); 1825 return ret_val; 1826 } 1827 1828 static int i40e_get_eeprom_len(struct net_device *netdev) 1829 { 1830 struct i40e_netdev_priv *np = netdev_priv(netdev); 1831 struct i40e_hw *hw = &np->vsi->back->hw; 1832 u32 val; 1833 1834 #define X722_EEPROM_SCOPE_LIMIT 0x5B9FFF 1835 if (hw->mac.type == I40E_MAC_X722) { 1836 val = X722_EEPROM_SCOPE_LIMIT + 1; 1837 return val; 1838 } 1839 val = (rd32(hw, I40E_GLPCI_LBARCTRL) 1840 & I40E_GLPCI_LBARCTRL_FL_SIZE_MASK) 1841 >> I40E_GLPCI_LBARCTRL_FL_SIZE_SHIFT; 1842 /* register returns value in power of 2, 64Kbyte chunks. */ 1843 val = (64 * 1024) * BIT(val); 1844 return val; 1845 } 1846 1847 static int i40e_set_eeprom(struct net_device *netdev, 1848 struct ethtool_eeprom *eeprom, u8 *bytes) 1849 { 1850 struct i40e_netdev_priv *np = netdev_priv(netdev); 1851 struct i40e_hw *hw = &np->vsi->back->hw; 1852 struct i40e_pf *pf = np->vsi->back; 1853 struct i40e_nvm_access *cmd = (struct i40e_nvm_access *)eeprom; 1854 int ret_val = 0; 1855 int errno = 0; 1856 u32 magic; 1857 1858 /* normal ethtool set_eeprom is not supported */ 1859 magic = hw->vendor_id | (hw->device_id << 16); 1860 if (eeprom->magic == magic) 1861 errno = -EOPNOTSUPP; 1862 /* check for NVMUpdate access method */ 1863 else if (!eeprom->magic || (eeprom->magic >> 16) != hw->device_id) 1864 errno = -EINVAL; 1865 else if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) || 1866 test_bit(__I40E_RESET_INTR_RECEIVED, pf->state)) 1867 errno = -EBUSY; 1868 else 1869 ret_val = i40e_nvmupd_command(hw, cmd, bytes, &errno); 1870 1871 if ((errno || ret_val) && (hw->debug_mask & I40E_DEBUG_NVM)) 1872 dev_info(&pf->pdev->dev, 1873 "NVMUpdate write failed err=%d status=0x%x errno=%d module=%d offset=0x%x size=%d\n", 1874 ret_val, hw->aq.asq_last_status, errno, 1875 (u8)(cmd->config & I40E_NVM_MOD_PNT_MASK), 1876 cmd->offset, cmd->data_size); 1877 1878 return errno; 1879 } 1880 1881 static void i40e_get_drvinfo(struct net_device *netdev, 1882 struct ethtool_drvinfo *drvinfo) 1883 { 1884 struct i40e_netdev_priv *np = netdev_priv(netdev); 1885 struct i40e_vsi *vsi = np->vsi; 1886 struct i40e_pf *pf = vsi->back; 1887 1888 strlcpy(drvinfo->driver, i40e_driver_name, sizeof(drvinfo->driver)); 1889 strlcpy(drvinfo->version, i40e_driver_version_str, 1890 sizeof(drvinfo->version)); 1891 strlcpy(drvinfo->fw_version, i40e_nvm_version_str(&pf->hw), 1892 sizeof(drvinfo->fw_version)); 1893 strlcpy(drvinfo->bus_info, pci_name(pf->pdev), 1894 sizeof(drvinfo->bus_info)); 1895 drvinfo->n_priv_flags = I40E_PRIV_FLAGS_STR_LEN; 1896 if (pf->hw.pf_id == 0) 1897 drvinfo->n_priv_flags += I40E_GL_PRIV_FLAGS_STR_LEN; 1898 } 1899 1900 static void i40e_get_ringparam(struct net_device *netdev, 1901 struct ethtool_ringparam *ring) 1902 { 1903 struct i40e_netdev_priv *np = netdev_priv(netdev); 1904 struct i40e_pf *pf = np->vsi->back; 1905 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi]; 1906 1907 ring->rx_max_pending = I40E_MAX_NUM_DESCRIPTORS; 1908 ring->tx_max_pending = I40E_MAX_NUM_DESCRIPTORS; 1909 ring->rx_mini_max_pending = 0; 1910 ring->rx_jumbo_max_pending = 0; 1911 ring->rx_pending = vsi->rx_rings[0]->count; 1912 ring->tx_pending = vsi->tx_rings[0]->count; 1913 ring->rx_mini_pending = 0; 1914 ring->rx_jumbo_pending = 0; 1915 } 1916 1917 static bool i40e_active_tx_ring_index(struct i40e_vsi *vsi, u16 index) 1918 { 1919 if (i40e_enabled_xdp_vsi(vsi)) { 1920 return index < vsi->num_queue_pairs || 1921 (index >= vsi->alloc_queue_pairs && 1922 index < vsi->alloc_queue_pairs + vsi->num_queue_pairs); 1923 } 1924 1925 return index < vsi->num_queue_pairs; 1926 } 1927 1928 static int i40e_set_ringparam(struct net_device *netdev, 1929 struct ethtool_ringparam *ring) 1930 { 1931 struct i40e_ring *tx_rings = NULL, *rx_rings = NULL; 1932 struct i40e_netdev_priv *np = netdev_priv(netdev); 1933 struct i40e_hw *hw = &np->vsi->back->hw; 1934 struct i40e_vsi *vsi = np->vsi; 1935 struct i40e_pf *pf = vsi->back; 1936 u32 new_rx_count, new_tx_count; 1937 u16 tx_alloc_queue_pairs; 1938 int timeout = 50; 1939 int i, err = 0; 1940 1941 if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending)) 1942 return -EINVAL; 1943 1944 if (ring->tx_pending > I40E_MAX_NUM_DESCRIPTORS || 1945 ring->tx_pending < I40E_MIN_NUM_DESCRIPTORS || 1946 ring->rx_pending > I40E_MAX_NUM_DESCRIPTORS || 1947 ring->rx_pending < I40E_MIN_NUM_DESCRIPTORS) { 1948 netdev_info(netdev, 1949 "Descriptors requested (Tx: %d / Rx: %d) out of range [%d-%d]\n", 1950 ring->tx_pending, ring->rx_pending, 1951 I40E_MIN_NUM_DESCRIPTORS, I40E_MAX_NUM_DESCRIPTORS); 1952 return -EINVAL; 1953 } 1954 1955 new_tx_count = ALIGN(ring->tx_pending, I40E_REQ_DESCRIPTOR_MULTIPLE); 1956 new_rx_count = ALIGN(ring->rx_pending, I40E_REQ_DESCRIPTOR_MULTIPLE); 1957 1958 /* if nothing to do return success */ 1959 if ((new_tx_count == vsi->tx_rings[0]->count) && 1960 (new_rx_count == vsi->rx_rings[0]->count)) 1961 return 0; 1962 1963 /* If there is a AF_XDP UMEM attached to any of Rx rings, 1964 * disallow changing the number of descriptors -- regardless 1965 * if the netdev is running or not. 1966 */ 1967 if (i40e_xsk_any_rx_ring_enabled(vsi)) 1968 return -EBUSY; 1969 1970 while (test_and_set_bit(__I40E_CONFIG_BUSY, pf->state)) { 1971 timeout--; 1972 if (!timeout) 1973 return -EBUSY; 1974 usleep_range(1000, 2000); 1975 } 1976 1977 if (!netif_running(vsi->netdev)) { 1978 /* simple case - set for the next time the netdev is started */ 1979 for (i = 0; i < vsi->num_queue_pairs; i++) { 1980 vsi->tx_rings[i]->count = new_tx_count; 1981 vsi->rx_rings[i]->count = new_rx_count; 1982 if (i40e_enabled_xdp_vsi(vsi)) 1983 vsi->xdp_rings[i]->count = new_tx_count; 1984 } 1985 vsi->num_tx_desc = new_tx_count; 1986 vsi->num_rx_desc = new_rx_count; 1987 goto done; 1988 } 1989 1990 /* We can't just free everything and then setup again, 1991 * because the ISRs in MSI-X mode get passed pointers 1992 * to the Tx and Rx ring structs. 1993 */ 1994 1995 /* alloc updated Tx and XDP Tx resources */ 1996 tx_alloc_queue_pairs = vsi->alloc_queue_pairs * 1997 (i40e_enabled_xdp_vsi(vsi) ? 2 : 1); 1998 if (new_tx_count != vsi->tx_rings[0]->count) { 1999 netdev_info(netdev, 2000 "Changing Tx descriptor count from %d to %d.\n", 2001 vsi->tx_rings[0]->count, new_tx_count); 2002 tx_rings = kcalloc(tx_alloc_queue_pairs, 2003 sizeof(struct i40e_ring), GFP_KERNEL); 2004 if (!tx_rings) { 2005 err = -ENOMEM; 2006 goto done; 2007 } 2008 2009 for (i = 0; i < tx_alloc_queue_pairs; i++) { 2010 if (!i40e_active_tx_ring_index(vsi, i)) 2011 continue; 2012 2013 tx_rings[i] = *vsi->tx_rings[i]; 2014 tx_rings[i].count = new_tx_count; 2015 /* the desc and bi pointers will be reallocated in the 2016 * setup call 2017 */ 2018 tx_rings[i].desc = NULL; 2019 tx_rings[i].rx_bi = NULL; 2020 err = i40e_setup_tx_descriptors(&tx_rings[i]); 2021 if (err) { 2022 while (i) { 2023 i--; 2024 if (!i40e_active_tx_ring_index(vsi, i)) 2025 continue; 2026 i40e_free_tx_resources(&tx_rings[i]); 2027 } 2028 kfree(tx_rings); 2029 tx_rings = NULL; 2030 2031 goto done; 2032 } 2033 } 2034 } 2035 2036 /* alloc updated Rx resources */ 2037 if (new_rx_count != vsi->rx_rings[0]->count) { 2038 netdev_info(netdev, 2039 "Changing Rx descriptor count from %d to %d\n", 2040 vsi->rx_rings[0]->count, new_rx_count); 2041 rx_rings = kcalloc(vsi->alloc_queue_pairs, 2042 sizeof(struct i40e_ring), GFP_KERNEL); 2043 if (!rx_rings) { 2044 err = -ENOMEM; 2045 goto free_tx; 2046 } 2047 2048 for (i = 0; i < vsi->num_queue_pairs; i++) { 2049 u16 unused; 2050 2051 /* clone ring and setup updated count */ 2052 rx_rings[i] = *vsi->rx_rings[i]; 2053 rx_rings[i].count = new_rx_count; 2054 /* the desc and bi pointers will be reallocated in the 2055 * setup call 2056 */ 2057 rx_rings[i].desc = NULL; 2058 rx_rings[i].rx_bi = NULL; 2059 /* Clear cloned XDP RX-queue info before setup call */ 2060 memset(&rx_rings[i].xdp_rxq, 0, sizeof(rx_rings[i].xdp_rxq)); 2061 /* this is to allow wr32 to have something to write to 2062 * during early allocation of Rx buffers 2063 */ 2064 rx_rings[i].tail = hw->hw_addr + I40E_PRTGEN_STATUS; 2065 err = i40e_setup_rx_descriptors(&rx_rings[i]); 2066 if (err) 2067 goto rx_unwind; 2068 2069 /* now allocate the Rx buffers to make sure the OS 2070 * has enough memory, any failure here means abort 2071 */ 2072 unused = I40E_DESC_UNUSED(&rx_rings[i]); 2073 err = i40e_alloc_rx_buffers(&rx_rings[i], unused); 2074 rx_unwind: 2075 if (err) { 2076 do { 2077 i40e_free_rx_resources(&rx_rings[i]); 2078 } while (i--); 2079 kfree(rx_rings); 2080 rx_rings = NULL; 2081 2082 goto free_tx; 2083 } 2084 } 2085 } 2086 2087 /* Bring interface down, copy in the new ring info, 2088 * then restore the interface 2089 */ 2090 i40e_down(vsi); 2091 2092 if (tx_rings) { 2093 for (i = 0; i < tx_alloc_queue_pairs; i++) { 2094 if (i40e_active_tx_ring_index(vsi, i)) { 2095 i40e_free_tx_resources(vsi->tx_rings[i]); 2096 *vsi->tx_rings[i] = tx_rings[i]; 2097 } 2098 } 2099 kfree(tx_rings); 2100 tx_rings = NULL; 2101 } 2102 2103 if (rx_rings) { 2104 for (i = 0; i < vsi->num_queue_pairs; i++) { 2105 i40e_free_rx_resources(vsi->rx_rings[i]); 2106 /* get the real tail offset */ 2107 rx_rings[i].tail = vsi->rx_rings[i]->tail; 2108 /* this is to fake out the allocation routine 2109 * into thinking it has to realloc everything 2110 * but the recycling logic will let us re-use 2111 * the buffers allocated above 2112 */ 2113 rx_rings[i].next_to_use = 0; 2114 rx_rings[i].next_to_clean = 0; 2115 rx_rings[i].next_to_alloc = 0; 2116 /* do a struct copy */ 2117 *vsi->rx_rings[i] = rx_rings[i]; 2118 } 2119 kfree(rx_rings); 2120 rx_rings = NULL; 2121 } 2122 2123 vsi->num_tx_desc = new_tx_count; 2124 vsi->num_rx_desc = new_rx_count; 2125 i40e_up(vsi); 2126 2127 free_tx: 2128 /* error cleanup if the Rx allocations failed after getting Tx */ 2129 if (tx_rings) { 2130 for (i = 0; i < tx_alloc_queue_pairs; i++) { 2131 if (i40e_active_tx_ring_index(vsi, i)) 2132 i40e_free_tx_resources(vsi->tx_rings[i]); 2133 } 2134 kfree(tx_rings); 2135 tx_rings = NULL; 2136 } 2137 2138 done: 2139 clear_bit(__I40E_CONFIG_BUSY, pf->state); 2140 2141 return err; 2142 } 2143 2144 /** 2145 * i40e_get_stats_count - return the stats count for a device 2146 * @netdev: the netdev to return the count for 2147 * 2148 * Returns the total number of statistics for this netdev. Note that even 2149 * though this is a function, it is required that the count for a specific 2150 * netdev must never change. Basing the count on static values such as the 2151 * maximum number of queues or the device type is ok. However, the API for 2152 * obtaining stats is *not* safe against changes based on non-static 2153 * values such as the *current* number of queues, or runtime flags. 2154 * 2155 * If a statistic is not always enabled, return it as part of the count 2156 * anyways, always return its string, and report its value as zero. 2157 **/ 2158 static int i40e_get_stats_count(struct net_device *netdev) 2159 { 2160 struct i40e_netdev_priv *np = netdev_priv(netdev); 2161 struct i40e_vsi *vsi = np->vsi; 2162 struct i40e_pf *pf = vsi->back; 2163 int stats_len; 2164 2165 if (vsi == pf->vsi[pf->lan_vsi] && pf->hw.partition_id == 1) 2166 stats_len = I40E_PF_STATS_LEN; 2167 else 2168 stats_len = I40E_VSI_STATS_LEN; 2169 2170 /* The number of stats reported for a given net_device must remain 2171 * constant throughout the life of that device. 2172 * 2173 * This is because the API for obtaining the size, strings, and stats 2174 * is spread out over three separate ethtool ioctls. There is no safe 2175 * way to lock the number of stats across these calls, so we must 2176 * assume that they will never change. 2177 * 2178 * Due to this, we report the maximum number of queues, even if not 2179 * every queue is currently configured. Since we always allocate 2180 * queues in pairs, we'll just use netdev->num_tx_queues * 2. This 2181 * works because the num_tx_queues is set at device creation and never 2182 * changes. 2183 */ 2184 stats_len += I40E_QUEUE_STATS_LEN * 2 * netdev->num_tx_queues; 2185 2186 return stats_len; 2187 } 2188 2189 static int i40e_get_sset_count(struct net_device *netdev, int sset) 2190 { 2191 struct i40e_netdev_priv *np = netdev_priv(netdev); 2192 struct i40e_vsi *vsi = np->vsi; 2193 struct i40e_pf *pf = vsi->back; 2194 2195 switch (sset) { 2196 case ETH_SS_TEST: 2197 return I40E_TEST_LEN; 2198 case ETH_SS_STATS: 2199 return i40e_get_stats_count(netdev); 2200 case ETH_SS_PRIV_FLAGS: 2201 return I40E_PRIV_FLAGS_STR_LEN + 2202 (pf->hw.pf_id == 0 ? I40E_GL_PRIV_FLAGS_STR_LEN : 0); 2203 default: 2204 return -EOPNOTSUPP; 2205 } 2206 } 2207 2208 /** 2209 * i40e_get_pfc_stats - copy HW PFC statistics to formatted structure 2210 * @pf: the PF device structure 2211 * @i: the priority value to copy 2212 * 2213 * The PFC stats are found as arrays in pf->stats, which is not easy to pass 2214 * into i40e_add_ethtool_stats. Produce a formatted i40e_pfc_stats structure 2215 * of the PFC stats for the given priority. 2216 **/ 2217 static inline struct i40e_pfc_stats 2218 i40e_get_pfc_stats(struct i40e_pf *pf, unsigned int i) 2219 { 2220 #define I40E_GET_PFC_STAT(stat, priority) \ 2221 .stat = pf->stats.stat[priority] 2222 2223 struct i40e_pfc_stats pfc = { 2224 I40E_GET_PFC_STAT(priority_xon_rx, i), 2225 I40E_GET_PFC_STAT(priority_xoff_rx, i), 2226 I40E_GET_PFC_STAT(priority_xon_tx, i), 2227 I40E_GET_PFC_STAT(priority_xoff_tx, i), 2228 I40E_GET_PFC_STAT(priority_xon_2_xoff, i), 2229 }; 2230 return pfc; 2231 } 2232 2233 /** 2234 * i40e_get_ethtool_stats - copy stat values into supplied buffer 2235 * @netdev: the netdev to collect stats for 2236 * @stats: ethtool stats command structure 2237 * @data: ethtool supplied buffer 2238 * 2239 * Copy the stats values for this netdev into the buffer. Expects data to be 2240 * pre-allocated to the size returned by i40e_get_stats_count.. Note that all 2241 * statistics must be copied in a static order, and the count must not change 2242 * for a given netdev. See i40e_get_stats_count for more details. 2243 * 2244 * If a statistic is not currently valid (such as a disabled queue), this 2245 * function reports its value as zero. 2246 **/ 2247 static void i40e_get_ethtool_stats(struct net_device *netdev, 2248 struct ethtool_stats *stats, u64 *data) 2249 { 2250 struct i40e_netdev_priv *np = netdev_priv(netdev); 2251 struct i40e_vsi *vsi = np->vsi; 2252 struct i40e_pf *pf = vsi->back; 2253 struct i40e_veb *veb = pf->veb[pf->lan_veb]; 2254 unsigned int i; 2255 bool veb_stats; 2256 u64 *p = data; 2257 2258 i40e_update_stats(vsi); 2259 2260 i40e_add_ethtool_stats(&data, i40e_get_vsi_stats_struct(vsi), 2261 i40e_gstrings_net_stats); 2262 2263 i40e_add_ethtool_stats(&data, vsi, i40e_gstrings_misc_stats); 2264 2265 rcu_read_lock(); 2266 for (i = 0; i < netdev->num_tx_queues; i++) { 2267 i40e_add_queue_stats(&data, READ_ONCE(vsi->tx_rings[i])); 2268 i40e_add_queue_stats(&data, READ_ONCE(vsi->rx_rings[i])); 2269 } 2270 rcu_read_unlock(); 2271 2272 if (vsi != pf->vsi[pf->lan_vsi] || pf->hw.partition_id != 1) 2273 goto check_data_pointer; 2274 2275 veb_stats = ((pf->lan_veb != I40E_NO_VEB) && 2276 (pf->flags & I40E_FLAG_VEB_STATS_ENABLED)); 2277 2278 /* If veb stats aren't enabled, pass NULL instead of the veb so that 2279 * we initialize stats to zero and update the data pointer 2280 * intelligently 2281 */ 2282 i40e_add_ethtool_stats(&data, veb_stats ? veb : NULL, 2283 i40e_gstrings_veb_stats); 2284 2285 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) 2286 i40e_add_ethtool_stats(&data, veb_stats ? veb : NULL, 2287 i40e_gstrings_veb_tc_stats); 2288 2289 i40e_add_ethtool_stats(&data, pf, i40e_gstrings_stats); 2290 2291 for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) { 2292 struct i40e_pfc_stats pfc = i40e_get_pfc_stats(pf, i); 2293 2294 i40e_add_ethtool_stats(&data, &pfc, i40e_gstrings_pfc_stats); 2295 } 2296 2297 check_data_pointer: 2298 WARN_ONCE(data - p != i40e_get_stats_count(netdev), 2299 "ethtool stats count mismatch!"); 2300 } 2301 2302 /** 2303 * i40e_get_stat_strings - copy stat strings into supplied buffer 2304 * @netdev: the netdev to collect strings for 2305 * @data: supplied buffer to copy strings into 2306 * 2307 * Copy the strings related to stats for this netdev. Expects data to be 2308 * pre-allocated with the size reported by i40e_get_stats_count. Note that the 2309 * strings must be copied in a static order and the total count must not 2310 * change for a given netdev. See i40e_get_stats_count for more details. 2311 **/ 2312 static void i40e_get_stat_strings(struct net_device *netdev, u8 *data) 2313 { 2314 struct i40e_netdev_priv *np = netdev_priv(netdev); 2315 struct i40e_vsi *vsi = np->vsi; 2316 struct i40e_pf *pf = vsi->back; 2317 unsigned int i; 2318 u8 *p = data; 2319 2320 i40e_add_stat_strings(&data, i40e_gstrings_net_stats); 2321 2322 i40e_add_stat_strings(&data, i40e_gstrings_misc_stats); 2323 2324 for (i = 0; i < netdev->num_tx_queues; i++) { 2325 i40e_add_stat_strings(&data, i40e_gstrings_queue_stats, 2326 "tx", i); 2327 i40e_add_stat_strings(&data, i40e_gstrings_queue_stats, 2328 "rx", i); 2329 } 2330 2331 if (vsi != pf->vsi[pf->lan_vsi] || pf->hw.partition_id != 1) 2332 return; 2333 2334 i40e_add_stat_strings(&data, i40e_gstrings_veb_stats); 2335 2336 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) 2337 i40e_add_stat_strings(&data, i40e_gstrings_veb_tc_stats, i); 2338 2339 i40e_add_stat_strings(&data, i40e_gstrings_stats); 2340 2341 for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) 2342 i40e_add_stat_strings(&data, i40e_gstrings_pfc_stats, i); 2343 2344 WARN_ONCE(data - p != i40e_get_stats_count(netdev) * ETH_GSTRING_LEN, 2345 "stat strings count mismatch!"); 2346 } 2347 2348 static void i40e_get_priv_flag_strings(struct net_device *netdev, u8 *data) 2349 { 2350 struct i40e_netdev_priv *np = netdev_priv(netdev); 2351 struct i40e_vsi *vsi = np->vsi; 2352 struct i40e_pf *pf = vsi->back; 2353 char *p = (char *)data; 2354 unsigned int i; 2355 2356 for (i = 0; i < I40E_PRIV_FLAGS_STR_LEN; i++) { 2357 snprintf(p, ETH_GSTRING_LEN, "%s", 2358 i40e_gstrings_priv_flags[i].flag_string); 2359 p += ETH_GSTRING_LEN; 2360 } 2361 if (pf->hw.pf_id != 0) 2362 return; 2363 for (i = 0; i < I40E_GL_PRIV_FLAGS_STR_LEN; i++) { 2364 snprintf(p, ETH_GSTRING_LEN, "%s", 2365 i40e_gl_gstrings_priv_flags[i].flag_string); 2366 p += ETH_GSTRING_LEN; 2367 } 2368 } 2369 2370 static void i40e_get_strings(struct net_device *netdev, u32 stringset, 2371 u8 *data) 2372 { 2373 switch (stringset) { 2374 case ETH_SS_TEST: 2375 memcpy(data, i40e_gstrings_test, 2376 I40E_TEST_LEN * ETH_GSTRING_LEN); 2377 break; 2378 case ETH_SS_STATS: 2379 i40e_get_stat_strings(netdev, data); 2380 break; 2381 case ETH_SS_PRIV_FLAGS: 2382 i40e_get_priv_flag_strings(netdev, data); 2383 break; 2384 default: 2385 break; 2386 } 2387 } 2388 2389 static int i40e_get_ts_info(struct net_device *dev, 2390 struct ethtool_ts_info *info) 2391 { 2392 struct i40e_pf *pf = i40e_netdev_to_pf(dev); 2393 2394 /* only report HW timestamping if PTP is enabled */ 2395 if (!(pf->flags & I40E_FLAG_PTP)) 2396 return ethtool_op_get_ts_info(dev, info); 2397 2398 info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE | 2399 SOF_TIMESTAMPING_RX_SOFTWARE | 2400 SOF_TIMESTAMPING_SOFTWARE | 2401 SOF_TIMESTAMPING_TX_HARDWARE | 2402 SOF_TIMESTAMPING_RX_HARDWARE | 2403 SOF_TIMESTAMPING_RAW_HARDWARE; 2404 2405 if (pf->ptp_clock) 2406 info->phc_index = ptp_clock_index(pf->ptp_clock); 2407 else 2408 info->phc_index = -1; 2409 2410 info->tx_types = BIT(HWTSTAMP_TX_OFF) | BIT(HWTSTAMP_TX_ON); 2411 2412 info->rx_filters = BIT(HWTSTAMP_FILTER_NONE) | 2413 BIT(HWTSTAMP_FILTER_PTP_V2_L2_EVENT) | 2414 BIT(HWTSTAMP_FILTER_PTP_V2_L2_SYNC) | 2415 BIT(HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ); 2416 2417 if (pf->hw_features & I40E_HW_PTP_L4_CAPABLE) 2418 info->rx_filters |= BIT(HWTSTAMP_FILTER_PTP_V1_L4_SYNC) | 2419 BIT(HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ) | 2420 BIT(HWTSTAMP_FILTER_PTP_V2_EVENT) | 2421 BIT(HWTSTAMP_FILTER_PTP_V2_L4_EVENT) | 2422 BIT(HWTSTAMP_FILTER_PTP_V2_SYNC) | 2423 BIT(HWTSTAMP_FILTER_PTP_V2_L4_SYNC) | 2424 BIT(HWTSTAMP_FILTER_PTP_V2_DELAY_REQ) | 2425 BIT(HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ); 2426 2427 return 0; 2428 } 2429 2430 static u64 i40e_link_test(struct net_device *netdev, u64 *data) 2431 { 2432 struct i40e_netdev_priv *np = netdev_priv(netdev); 2433 struct i40e_pf *pf = np->vsi->back; 2434 i40e_status status; 2435 bool link_up = false; 2436 2437 netif_info(pf, hw, netdev, "link test\n"); 2438 status = i40e_get_link_status(&pf->hw, &link_up); 2439 if (status) { 2440 netif_err(pf, drv, netdev, "link query timed out, please retry test\n"); 2441 *data = 1; 2442 return *data; 2443 } 2444 2445 if (link_up) 2446 *data = 0; 2447 else 2448 *data = 1; 2449 2450 return *data; 2451 } 2452 2453 static u64 i40e_reg_test(struct net_device *netdev, u64 *data) 2454 { 2455 struct i40e_netdev_priv *np = netdev_priv(netdev); 2456 struct i40e_pf *pf = np->vsi->back; 2457 2458 netif_info(pf, hw, netdev, "register test\n"); 2459 *data = i40e_diag_reg_test(&pf->hw); 2460 2461 return *data; 2462 } 2463 2464 static u64 i40e_eeprom_test(struct net_device *netdev, u64 *data) 2465 { 2466 struct i40e_netdev_priv *np = netdev_priv(netdev); 2467 struct i40e_pf *pf = np->vsi->back; 2468 2469 netif_info(pf, hw, netdev, "eeprom test\n"); 2470 *data = i40e_diag_eeprom_test(&pf->hw); 2471 2472 /* forcebly clear the NVM Update state machine */ 2473 pf->hw.nvmupd_state = I40E_NVMUPD_STATE_INIT; 2474 2475 return *data; 2476 } 2477 2478 static u64 i40e_intr_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 u16 swc_old = pf->sw_int_count; 2483 2484 netif_info(pf, hw, netdev, "interrupt test\n"); 2485 wr32(&pf->hw, I40E_PFINT_DYN_CTL0, 2486 (I40E_PFINT_DYN_CTL0_INTENA_MASK | 2487 I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK | 2488 I40E_PFINT_DYN_CTL0_ITR_INDX_MASK | 2489 I40E_PFINT_DYN_CTL0_SW_ITR_INDX_ENA_MASK | 2490 I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK)); 2491 usleep_range(1000, 2000); 2492 *data = (swc_old == pf->sw_int_count); 2493 2494 return *data; 2495 } 2496 2497 static inline bool i40e_active_vfs(struct i40e_pf *pf) 2498 { 2499 struct i40e_vf *vfs = pf->vf; 2500 int i; 2501 2502 for (i = 0; i < pf->num_alloc_vfs; i++) 2503 if (test_bit(I40E_VF_STATE_ACTIVE, &vfs[i].vf_states)) 2504 return true; 2505 return false; 2506 } 2507 2508 static inline bool i40e_active_vmdqs(struct i40e_pf *pf) 2509 { 2510 return !!i40e_find_vsi_by_type(pf, I40E_VSI_VMDQ2); 2511 } 2512 2513 static void i40e_diag_test(struct net_device *netdev, 2514 struct ethtool_test *eth_test, u64 *data) 2515 { 2516 struct i40e_netdev_priv *np = netdev_priv(netdev); 2517 bool if_running = netif_running(netdev); 2518 struct i40e_pf *pf = np->vsi->back; 2519 2520 if (eth_test->flags == ETH_TEST_FL_OFFLINE) { 2521 /* Offline tests */ 2522 netif_info(pf, drv, netdev, "offline testing starting\n"); 2523 2524 set_bit(__I40E_TESTING, pf->state); 2525 2526 if (i40e_active_vfs(pf) || i40e_active_vmdqs(pf)) { 2527 dev_warn(&pf->pdev->dev, 2528 "Please take active VFs and Netqueues offline and restart the adapter before running NIC diagnostics\n"); 2529 data[I40E_ETH_TEST_REG] = 1; 2530 data[I40E_ETH_TEST_EEPROM] = 1; 2531 data[I40E_ETH_TEST_INTR] = 1; 2532 data[I40E_ETH_TEST_LINK] = 1; 2533 eth_test->flags |= ETH_TEST_FL_FAILED; 2534 clear_bit(__I40E_TESTING, pf->state); 2535 goto skip_ol_tests; 2536 } 2537 2538 /* If the device is online then take it offline */ 2539 if (if_running) 2540 /* indicate we're in test mode */ 2541 i40e_close(netdev); 2542 else 2543 /* This reset does not affect link - if it is 2544 * changed to a type of reset that does affect 2545 * link then the following link test would have 2546 * to be moved to before the reset 2547 */ 2548 i40e_do_reset(pf, BIT(__I40E_PF_RESET_REQUESTED), true); 2549 2550 if (i40e_link_test(netdev, &data[I40E_ETH_TEST_LINK])) 2551 eth_test->flags |= ETH_TEST_FL_FAILED; 2552 2553 if (i40e_eeprom_test(netdev, &data[I40E_ETH_TEST_EEPROM])) 2554 eth_test->flags |= ETH_TEST_FL_FAILED; 2555 2556 if (i40e_intr_test(netdev, &data[I40E_ETH_TEST_INTR])) 2557 eth_test->flags |= ETH_TEST_FL_FAILED; 2558 2559 /* run reg test last, a reset is required after it */ 2560 if (i40e_reg_test(netdev, &data[I40E_ETH_TEST_REG])) 2561 eth_test->flags |= ETH_TEST_FL_FAILED; 2562 2563 clear_bit(__I40E_TESTING, pf->state); 2564 i40e_do_reset(pf, BIT(__I40E_PF_RESET_REQUESTED), true); 2565 2566 if (if_running) 2567 i40e_open(netdev); 2568 } else { 2569 /* Online tests */ 2570 netif_info(pf, drv, netdev, "online testing starting\n"); 2571 2572 if (i40e_link_test(netdev, &data[I40E_ETH_TEST_LINK])) 2573 eth_test->flags |= ETH_TEST_FL_FAILED; 2574 2575 /* Offline only tests, not run in online; pass by default */ 2576 data[I40E_ETH_TEST_REG] = 0; 2577 data[I40E_ETH_TEST_EEPROM] = 0; 2578 data[I40E_ETH_TEST_INTR] = 0; 2579 } 2580 2581 skip_ol_tests: 2582 2583 netif_info(pf, drv, netdev, "testing finished\n"); 2584 } 2585 2586 static void i40e_get_wol(struct net_device *netdev, 2587 struct ethtool_wolinfo *wol) 2588 { 2589 struct i40e_netdev_priv *np = netdev_priv(netdev); 2590 struct i40e_pf *pf = np->vsi->back; 2591 struct i40e_hw *hw = &pf->hw; 2592 u16 wol_nvm_bits; 2593 2594 /* NVM bit on means WoL disabled for the port */ 2595 i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits); 2596 if ((BIT(hw->port) & wol_nvm_bits) || (hw->partition_id != 1)) { 2597 wol->supported = 0; 2598 wol->wolopts = 0; 2599 } else { 2600 wol->supported = WAKE_MAGIC; 2601 wol->wolopts = (pf->wol_en ? WAKE_MAGIC : 0); 2602 } 2603 } 2604 2605 /** 2606 * i40e_set_wol - set the WakeOnLAN configuration 2607 * @netdev: the netdev in question 2608 * @wol: the ethtool WoL setting data 2609 **/ 2610 static int i40e_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol) 2611 { 2612 struct i40e_netdev_priv *np = netdev_priv(netdev); 2613 struct i40e_pf *pf = np->vsi->back; 2614 struct i40e_vsi *vsi = np->vsi; 2615 struct i40e_hw *hw = &pf->hw; 2616 u16 wol_nvm_bits; 2617 2618 /* WoL not supported if this isn't the controlling PF on the port */ 2619 if (hw->partition_id != 1) { 2620 i40e_partition_setting_complaint(pf); 2621 return -EOPNOTSUPP; 2622 } 2623 2624 if (vsi != pf->vsi[pf->lan_vsi]) 2625 return -EOPNOTSUPP; 2626 2627 /* NVM bit on means WoL disabled for the port */ 2628 i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits); 2629 if (BIT(hw->port) & wol_nvm_bits) 2630 return -EOPNOTSUPP; 2631 2632 /* only magic packet is supported */ 2633 if (wol->wolopts & ~WAKE_MAGIC) 2634 return -EOPNOTSUPP; 2635 2636 /* is this a new value? */ 2637 if (pf->wol_en != !!wol->wolopts) { 2638 pf->wol_en = !!wol->wolopts; 2639 device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en); 2640 } 2641 2642 return 0; 2643 } 2644 2645 static int i40e_set_phys_id(struct net_device *netdev, 2646 enum ethtool_phys_id_state state) 2647 { 2648 struct i40e_netdev_priv *np = netdev_priv(netdev); 2649 i40e_status ret = 0; 2650 struct i40e_pf *pf = np->vsi->back; 2651 struct i40e_hw *hw = &pf->hw; 2652 int blink_freq = 2; 2653 u16 temp_status; 2654 2655 switch (state) { 2656 case ETHTOOL_ID_ACTIVE: 2657 if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS)) { 2658 pf->led_status = i40e_led_get(hw); 2659 } else { 2660 if (!(hw->flags & I40E_HW_FLAG_AQ_PHY_ACCESS_CAPABLE)) 2661 i40e_aq_set_phy_debug(hw, I40E_PHY_DEBUG_ALL, 2662 NULL); 2663 ret = i40e_led_get_phy(hw, &temp_status, 2664 &pf->phy_led_val); 2665 pf->led_status = temp_status; 2666 } 2667 return blink_freq; 2668 case ETHTOOL_ID_ON: 2669 if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS)) 2670 i40e_led_set(hw, 0xf, false); 2671 else 2672 ret = i40e_led_set_phy(hw, true, pf->led_status, 0); 2673 break; 2674 case ETHTOOL_ID_OFF: 2675 if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS)) 2676 i40e_led_set(hw, 0x0, false); 2677 else 2678 ret = i40e_led_set_phy(hw, false, pf->led_status, 0); 2679 break; 2680 case ETHTOOL_ID_INACTIVE: 2681 if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS)) { 2682 i40e_led_set(hw, pf->led_status, false); 2683 } else { 2684 ret = i40e_led_set_phy(hw, false, pf->led_status, 2685 (pf->phy_led_val | 2686 I40E_PHY_LED_MODE_ORIG)); 2687 if (!(hw->flags & I40E_HW_FLAG_AQ_PHY_ACCESS_CAPABLE)) 2688 i40e_aq_set_phy_debug(hw, 0, NULL); 2689 } 2690 break; 2691 default: 2692 break; 2693 } 2694 if (ret) 2695 return -ENOENT; 2696 else 2697 return 0; 2698 } 2699 2700 /* NOTE: i40e hardware uses a conversion factor of 2 for Interrupt 2701 * Throttle Rate (ITR) ie. ITR(1) = 2us ITR(10) = 20 us, and also 2702 * 125us (8000 interrupts per second) == ITR(62) 2703 */ 2704 2705 /** 2706 * __i40e_get_coalesce - get per-queue coalesce settings 2707 * @netdev: the netdev to check 2708 * @ec: ethtool coalesce data structure 2709 * @queue: which queue to pick 2710 * 2711 * Gets the per-queue settings for coalescence. Specifically Rx and Tx usecs 2712 * are per queue. If queue is <0 then we default to queue 0 as the 2713 * representative value. 2714 **/ 2715 static int __i40e_get_coalesce(struct net_device *netdev, 2716 struct ethtool_coalesce *ec, 2717 int queue) 2718 { 2719 struct i40e_netdev_priv *np = netdev_priv(netdev); 2720 struct i40e_ring *rx_ring, *tx_ring; 2721 struct i40e_vsi *vsi = np->vsi; 2722 2723 ec->tx_max_coalesced_frames_irq = vsi->work_limit; 2724 ec->rx_max_coalesced_frames_irq = vsi->work_limit; 2725 2726 /* rx and tx usecs has per queue value. If user doesn't specify the 2727 * queue, return queue 0's value to represent. 2728 */ 2729 if (queue < 0) 2730 queue = 0; 2731 else if (queue >= vsi->num_queue_pairs) 2732 return -EINVAL; 2733 2734 rx_ring = vsi->rx_rings[queue]; 2735 tx_ring = vsi->tx_rings[queue]; 2736 2737 if (ITR_IS_DYNAMIC(rx_ring->itr_setting)) 2738 ec->use_adaptive_rx_coalesce = 1; 2739 2740 if (ITR_IS_DYNAMIC(tx_ring->itr_setting)) 2741 ec->use_adaptive_tx_coalesce = 1; 2742 2743 ec->rx_coalesce_usecs = rx_ring->itr_setting & ~I40E_ITR_DYNAMIC; 2744 ec->tx_coalesce_usecs = tx_ring->itr_setting & ~I40E_ITR_DYNAMIC; 2745 2746 /* we use the _usecs_high to store/set the interrupt rate limit 2747 * that the hardware supports, that almost but not quite 2748 * fits the original intent of the ethtool variable, 2749 * the rx_coalesce_usecs_high limits total interrupts 2750 * per second from both tx/rx sources. 2751 */ 2752 ec->rx_coalesce_usecs_high = vsi->int_rate_limit; 2753 ec->tx_coalesce_usecs_high = vsi->int_rate_limit; 2754 2755 return 0; 2756 } 2757 2758 /** 2759 * i40e_get_coalesce - get a netdev's coalesce settings 2760 * @netdev: the netdev to check 2761 * @ec: ethtool coalesce data structure 2762 * 2763 * Gets the coalesce settings for a particular netdev. Note that if user has 2764 * modified per-queue settings, this only guarantees to represent queue 0. See 2765 * __i40e_get_coalesce for more details. 2766 **/ 2767 static int i40e_get_coalesce(struct net_device *netdev, 2768 struct ethtool_coalesce *ec) 2769 { 2770 return __i40e_get_coalesce(netdev, ec, -1); 2771 } 2772 2773 /** 2774 * i40e_get_per_queue_coalesce - gets coalesce settings for particular queue 2775 * @netdev: netdev structure 2776 * @ec: ethtool's coalesce settings 2777 * @queue: the particular queue to read 2778 * 2779 * Will read a specific queue's coalesce settings 2780 **/ 2781 static int i40e_get_per_queue_coalesce(struct net_device *netdev, u32 queue, 2782 struct ethtool_coalesce *ec) 2783 { 2784 return __i40e_get_coalesce(netdev, ec, queue); 2785 } 2786 2787 /** 2788 * i40e_set_itr_per_queue - set ITR values for specific queue 2789 * @vsi: the VSI to set values for 2790 * @ec: coalesce settings from ethtool 2791 * @queue: the queue to modify 2792 * 2793 * Change the ITR settings for a specific queue. 2794 **/ 2795 static void i40e_set_itr_per_queue(struct i40e_vsi *vsi, 2796 struct ethtool_coalesce *ec, 2797 int queue) 2798 { 2799 struct i40e_ring *rx_ring = vsi->rx_rings[queue]; 2800 struct i40e_ring *tx_ring = vsi->tx_rings[queue]; 2801 struct i40e_pf *pf = vsi->back; 2802 struct i40e_hw *hw = &pf->hw; 2803 struct i40e_q_vector *q_vector; 2804 u16 intrl; 2805 2806 intrl = i40e_intrl_usec_to_reg(vsi->int_rate_limit); 2807 2808 rx_ring->itr_setting = ITR_REG_ALIGN(ec->rx_coalesce_usecs); 2809 tx_ring->itr_setting = ITR_REG_ALIGN(ec->tx_coalesce_usecs); 2810 2811 if (ec->use_adaptive_rx_coalesce) 2812 rx_ring->itr_setting |= I40E_ITR_DYNAMIC; 2813 else 2814 rx_ring->itr_setting &= ~I40E_ITR_DYNAMIC; 2815 2816 if (ec->use_adaptive_tx_coalesce) 2817 tx_ring->itr_setting |= I40E_ITR_DYNAMIC; 2818 else 2819 tx_ring->itr_setting &= ~I40E_ITR_DYNAMIC; 2820 2821 q_vector = rx_ring->q_vector; 2822 q_vector->rx.target_itr = ITR_TO_REG(rx_ring->itr_setting); 2823 2824 q_vector = tx_ring->q_vector; 2825 q_vector->tx.target_itr = ITR_TO_REG(tx_ring->itr_setting); 2826 2827 /* The interrupt handler itself will take care of programming 2828 * the Tx and Rx ITR values based on the values we have entered 2829 * into the q_vector, no need to write the values now. 2830 */ 2831 2832 wr32(hw, I40E_PFINT_RATEN(q_vector->reg_idx), intrl); 2833 i40e_flush(hw); 2834 } 2835 2836 /** 2837 * __i40e_set_coalesce - set coalesce settings for particular queue 2838 * @netdev: the netdev to change 2839 * @ec: ethtool coalesce settings 2840 * @queue: the queue to change 2841 * 2842 * Sets the coalesce settings for a particular queue. 2843 **/ 2844 static int __i40e_set_coalesce(struct net_device *netdev, 2845 struct ethtool_coalesce *ec, 2846 int queue) 2847 { 2848 struct i40e_netdev_priv *np = netdev_priv(netdev); 2849 u16 intrl_reg, cur_rx_itr, cur_tx_itr; 2850 struct i40e_vsi *vsi = np->vsi; 2851 struct i40e_pf *pf = vsi->back; 2852 int i; 2853 2854 if (ec->tx_max_coalesced_frames_irq || ec->rx_max_coalesced_frames_irq) 2855 vsi->work_limit = ec->tx_max_coalesced_frames_irq; 2856 2857 if (queue < 0) { 2858 cur_rx_itr = vsi->rx_rings[0]->itr_setting; 2859 cur_tx_itr = vsi->tx_rings[0]->itr_setting; 2860 } else if (queue < vsi->num_queue_pairs) { 2861 cur_rx_itr = vsi->rx_rings[queue]->itr_setting; 2862 cur_tx_itr = vsi->tx_rings[queue]->itr_setting; 2863 } else { 2864 netif_info(pf, drv, netdev, "Invalid queue value, queue range is 0 - %d\n", 2865 vsi->num_queue_pairs - 1); 2866 return -EINVAL; 2867 } 2868 2869 cur_tx_itr &= ~I40E_ITR_DYNAMIC; 2870 cur_rx_itr &= ~I40E_ITR_DYNAMIC; 2871 2872 /* tx_coalesce_usecs_high is ignored, use rx-usecs-high instead */ 2873 if (ec->tx_coalesce_usecs_high != vsi->int_rate_limit) { 2874 netif_info(pf, drv, netdev, "tx-usecs-high is not used, please program rx-usecs-high\n"); 2875 return -EINVAL; 2876 } 2877 2878 if (ec->rx_coalesce_usecs_high > INTRL_REG_TO_USEC(I40E_MAX_INTRL)) { 2879 netif_info(pf, drv, netdev, "Invalid value, rx-usecs-high range is 0-%lu\n", 2880 INTRL_REG_TO_USEC(I40E_MAX_INTRL)); 2881 return -EINVAL; 2882 } 2883 2884 if (ec->rx_coalesce_usecs != cur_rx_itr && 2885 ec->use_adaptive_rx_coalesce) { 2886 netif_info(pf, drv, netdev, "RX interrupt moderation cannot be changed if adaptive-rx is enabled.\n"); 2887 return -EINVAL; 2888 } 2889 2890 if (ec->rx_coalesce_usecs > I40E_MAX_ITR) { 2891 netif_info(pf, drv, netdev, "Invalid value, rx-usecs range is 0-8160\n"); 2892 return -EINVAL; 2893 } 2894 2895 if (ec->tx_coalesce_usecs != cur_tx_itr && 2896 ec->use_adaptive_tx_coalesce) { 2897 netif_info(pf, drv, netdev, "TX interrupt moderation cannot be changed if adaptive-tx is enabled.\n"); 2898 return -EINVAL; 2899 } 2900 2901 if (ec->tx_coalesce_usecs > I40E_MAX_ITR) { 2902 netif_info(pf, drv, netdev, "Invalid value, tx-usecs range is 0-8160\n"); 2903 return -EINVAL; 2904 } 2905 2906 if (ec->use_adaptive_rx_coalesce && !cur_rx_itr) 2907 ec->rx_coalesce_usecs = I40E_MIN_ITR; 2908 2909 if (ec->use_adaptive_tx_coalesce && !cur_tx_itr) 2910 ec->tx_coalesce_usecs = I40E_MIN_ITR; 2911 2912 intrl_reg = i40e_intrl_usec_to_reg(ec->rx_coalesce_usecs_high); 2913 vsi->int_rate_limit = INTRL_REG_TO_USEC(intrl_reg); 2914 if (vsi->int_rate_limit != ec->rx_coalesce_usecs_high) { 2915 netif_info(pf, drv, netdev, "Interrupt rate limit rounded down to %d\n", 2916 vsi->int_rate_limit); 2917 } 2918 2919 /* rx and tx usecs has per queue value. If user doesn't specify the 2920 * queue, apply to all queues. 2921 */ 2922 if (queue < 0) { 2923 for (i = 0; i < vsi->num_queue_pairs; i++) 2924 i40e_set_itr_per_queue(vsi, ec, i); 2925 } else { 2926 i40e_set_itr_per_queue(vsi, ec, queue); 2927 } 2928 2929 return 0; 2930 } 2931 2932 /** 2933 * i40e_set_coalesce - set coalesce settings for every queue on the netdev 2934 * @netdev: the netdev to change 2935 * @ec: ethtool coalesce settings 2936 * 2937 * This will set each queue to the same coalesce settings. 2938 **/ 2939 static int i40e_set_coalesce(struct net_device *netdev, 2940 struct ethtool_coalesce *ec) 2941 { 2942 return __i40e_set_coalesce(netdev, ec, -1); 2943 } 2944 2945 /** 2946 * i40e_set_per_queue_coalesce - set specific queue's coalesce settings 2947 * @netdev: the netdev to change 2948 * @ec: ethtool's coalesce settings 2949 * @queue: the queue to change 2950 * 2951 * Sets the specified queue's coalesce settings. 2952 **/ 2953 static int i40e_set_per_queue_coalesce(struct net_device *netdev, u32 queue, 2954 struct ethtool_coalesce *ec) 2955 { 2956 return __i40e_set_coalesce(netdev, ec, queue); 2957 } 2958 2959 /** 2960 * i40e_get_rss_hash_opts - Get RSS hash Input Set for each flow type 2961 * @pf: pointer to the physical function struct 2962 * @cmd: ethtool rxnfc command 2963 * 2964 * Returns Success if the flow is supported, else Invalid Input. 2965 **/ 2966 static int i40e_get_rss_hash_opts(struct i40e_pf *pf, struct ethtool_rxnfc *cmd) 2967 { 2968 struct i40e_hw *hw = &pf->hw; 2969 u8 flow_pctype = 0; 2970 u64 i_set = 0; 2971 2972 cmd->data = 0; 2973 2974 switch (cmd->flow_type) { 2975 case TCP_V4_FLOW: 2976 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_TCP; 2977 break; 2978 case UDP_V4_FLOW: 2979 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_UDP; 2980 break; 2981 case TCP_V6_FLOW: 2982 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_TCP; 2983 break; 2984 case UDP_V6_FLOW: 2985 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_UDP; 2986 break; 2987 case SCTP_V4_FLOW: 2988 case AH_ESP_V4_FLOW: 2989 case AH_V4_FLOW: 2990 case ESP_V4_FLOW: 2991 case IPV4_FLOW: 2992 case SCTP_V6_FLOW: 2993 case AH_ESP_V6_FLOW: 2994 case AH_V6_FLOW: 2995 case ESP_V6_FLOW: 2996 case IPV6_FLOW: 2997 /* Default is src/dest for IP, no matter the L4 hashing */ 2998 cmd->data |= RXH_IP_SRC | RXH_IP_DST; 2999 break; 3000 default: 3001 return -EINVAL; 3002 } 3003 3004 /* Read flow based hash input set register */ 3005 if (flow_pctype) { 3006 i_set = (u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(0, 3007 flow_pctype)) | 3008 ((u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(1, 3009 flow_pctype)) << 32); 3010 } 3011 3012 /* Process bits of hash input set */ 3013 if (i_set) { 3014 if (i_set & I40E_L4_SRC_MASK) 3015 cmd->data |= RXH_L4_B_0_1; 3016 if (i_set & I40E_L4_DST_MASK) 3017 cmd->data |= RXH_L4_B_2_3; 3018 3019 if (cmd->flow_type == TCP_V4_FLOW || 3020 cmd->flow_type == UDP_V4_FLOW) { 3021 if (i_set & I40E_L3_SRC_MASK) 3022 cmd->data |= RXH_IP_SRC; 3023 if (i_set & I40E_L3_DST_MASK) 3024 cmd->data |= RXH_IP_DST; 3025 } else if (cmd->flow_type == TCP_V6_FLOW || 3026 cmd->flow_type == UDP_V6_FLOW) { 3027 if (i_set & I40E_L3_V6_SRC_MASK) 3028 cmd->data |= RXH_IP_SRC; 3029 if (i_set & I40E_L3_V6_DST_MASK) 3030 cmd->data |= RXH_IP_DST; 3031 } 3032 } 3033 3034 return 0; 3035 } 3036 3037 /** 3038 * i40e_check_mask - Check whether a mask field is set 3039 * @mask: the full mask value 3040 * @field: mask of the field to check 3041 * 3042 * If the given mask is fully set, return positive value. If the mask for the 3043 * field is fully unset, return zero. Otherwise return a negative error code. 3044 **/ 3045 static int i40e_check_mask(u64 mask, u64 field) 3046 { 3047 u64 value = mask & field; 3048 3049 if (value == field) 3050 return 1; 3051 else if (!value) 3052 return 0; 3053 else 3054 return -1; 3055 } 3056 3057 /** 3058 * i40e_parse_rx_flow_user_data - Deconstruct user-defined data 3059 * @fsp: pointer to rx flow specification 3060 * @data: pointer to userdef data structure for storage 3061 * 3062 * Read the user-defined data and deconstruct the value into a structure. No 3063 * other code should read the user-defined data, so as to ensure that every 3064 * place consistently reads the value correctly. 3065 * 3066 * The user-defined field is a 64bit Big Endian format value, which we 3067 * deconstruct by reading bits or bit fields from it. Single bit flags shall 3068 * be defined starting from the highest bits, while small bit field values 3069 * shall be defined starting from the lowest bits. 3070 * 3071 * Returns 0 if the data is valid, and non-zero if the userdef data is invalid 3072 * and the filter should be rejected. The data structure will always be 3073 * modified even if FLOW_EXT is not set. 3074 * 3075 **/ 3076 static int i40e_parse_rx_flow_user_data(struct ethtool_rx_flow_spec *fsp, 3077 struct i40e_rx_flow_userdef *data) 3078 { 3079 u64 value, mask; 3080 int valid; 3081 3082 /* Zero memory first so it's always consistent. */ 3083 memset(data, 0, sizeof(*data)); 3084 3085 if (!(fsp->flow_type & FLOW_EXT)) 3086 return 0; 3087 3088 value = be64_to_cpu(*((__be64 *)fsp->h_ext.data)); 3089 mask = be64_to_cpu(*((__be64 *)fsp->m_ext.data)); 3090 3091 #define I40E_USERDEF_FLEX_WORD GENMASK_ULL(15, 0) 3092 #define I40E_USERDEF_FLEX_OFFSET GENMASK_ULL(31, 16) 3093 #define I40E_USERDEF_FLEX_FILTER GENMASK_ULL(31, 0) 3094 3095 valid = i40e_check_mask(mask, I40E_USERDEF_FLEX_FILTER); 3096 if (valid < 0) { 3097 return -EINVAL; 3098 } else if (valid) { 3099 data->flex_word = value & I40E_USERDEF_FLEX_WORD; 3100 data->flex_offset = 3101 (value & I40E_USERDEF_FLEX_OFFSET) >> 16; 3102 data->flex_filter = true; 3103 } 3104 3105 return 0; 3106 } 3107 3108 /** 3109 * i40e_fill_rx_flow_user_data - Fill in user-defined data field 3110 * @fsp: pointer to rx_flow specification 3111 * @data: pointer to return userdef data 3112 * 3113 * Reads the userdef data structure and properly fills in the user defined 3114 * fields of the rx_flow_spec. 3115 **/ 3116 static void i40e_fill_rx_flow_user_data(struct ethtool_rx_flow_spec *fsp, 3117 struct i40e_rx_flow_userdef *data) 3118 { 3119 u64 value = 0, mask = 0; 3120 3121 if (data->flex_filter) { 3122 value |= data->flex_word; 3123 value |= (u64)data->flex_offset << 16; 3124 mask |= I40E_USERDEF_FLEX_FILTER; 3125 } 3126 3127 if (value || mask) 3128 fsp->flow_type |= FLOW_EXT; 3129 3130 *((__be64 *)fsp->h_ext.data) = cpu_to_be64(value); 3131 *((__be64 *)fsp->m_ext.data) = cpu_to_be64(mask); 3132 } 3133 3134 /** 3135 * i40e_get_ethtool_fdir_all - Populates the rule count of a command 3136 * @pf: Pointer to the physical function struct 3137 * @cmd: The command to get or set Rx flow classification rules 3138 * @rule_locs: Array of used rule locations 3139 * 3140 * This function populates both the total and actual rule count of 3141 * the ethtool flow classification command 3142 * 3143 * Returns 0 on success or -EMSGSIZE if entry not found 3144 **/ 3145 static int i40e_get_ethtool_fdir_all(struct i40e_pf *pf, 3146 struct ethtool_rxnfc *cmd, 3147 u32 *rule_locs) 3148 { 3149 struct i40e_fdir_filter *rule; 3150 struct hlist_node *node2; 3151 int cnt = 0; 3152 3153 /* report total rule count */ 3154 cmd->data = i40e_get_fd_cnt_all(pf); 3155 3156 hlist_for_each_entry_safe(rule, node2, 3157 &pf->fdir_filter_list, fdir_node) { 3158 if (cnt == cmd->rule_cnt) 3159 return -EMSGSIZE; 3160 3161 rule_locs[cnt] = rule->fd_id; 3162 cnt++; 3163 } 3164 3165 cmd->rule_cnt = cnt; 3166 3167 return 0; 3168 } 3169 3170 /** 3171 * i40e_get_ethtool_fdir_entry - Look up a filter based on Rx flow 3172 * @pf: Pointer to the physical function struct 3173 * @cmd: The command to get or set Rx flow classification rules 3174 * 3175 * This function looks up a filter based on the Rx flow classification 3176 * command and fills the flow spec info for it if found 3177 * 3178 * Returns 0 on success or -EINVAL if filter not found 3179 **/ 3180 static int i40e_get_ethtool_fdir_entry(struct i40e_pf *pf, 3181 struct ethtool_rxnfc *cmd) 3182 { 3183 struct ethtool_rx_flow_spec *fsp = 3184 (struct ethtool_rx_flow_spec *)&cmd->fs; 3185 struct i40e_rx_flow_userdef userdef = {0}; 3186 struct i40e_fdir_filter *rule = NULL; 3187 struct hlist_node *node2; 3188 u64 input_set; 3189 u16 index; 3190 3191 hlist_for_each_entry_safe(rule, node2, 3192 &pf->fdir_filter_list, fdir_node) { 3193 if (fsp->location <= rule->fd_id) 3194 break; 3195 } 3196 3197 if (!rule || fsp->location != rule->fd_id) 3198 return -EINVAL; 3199 3200 fsp->flow_type = rule->flow_type; 3201 if (fsp->flow_type == IP_USER_FLOW) { 3202 fsp->h_u.usr_ip4_spec.ip_ver = ETH_RX_NFC_IP4; 3203 fsp->h_u.usr_ip4_spec.proto = 0; 3204 fsp->m_u.usr_ip4_spec.proto = 0; 3205 } 3206 3207 /* Reverse the src and dest notion, since the HW views them from 3208 * Tx perspective where as the user expects it from Rx filter view. 3209 */ 3210 fsp->h_u.tcp_ip4_spec.psrc = rule->dst_port; 3211 fsp->h_u.tcp_ip4_spec.pdst = rule->src_port; 3212 fsp->h_u.tcp_ip4_spec.ip4src = rule->dst_ip; 3213 fsp->h_u.tcp_ip4_spec.ip4dst = rule->src_ip; 3214 3215 switch (rule->flow_type) { 3216 case SCTP_V4_FLOW: 3217 index = I40E_FILTER_PCTYPE_NONF_IPV4_SCTP; 3218 break; 3219 case TCP_V4_FLOW: 3220 index = I40E_FILTER_PCTYPE_NONF_IPV4_TCP; 3221 break; 3222 case UDP_V4_FLOW: 3223 index = I40E_FILTER_PCTYPE_NONF_IPV4_UDP; 3224 break; 3225 case IP_USER_FLOW: 3226 index = I40E_FILTER_PCTYPE_NONF_IPV4_OTHER; 3227 break; 3228 default: 3229 /* If we have stored a filter with a flow type not listed here 3230 * it is almost certainly a driver bug. WARN(), and then 3231 * assign the input_set as if all fields are enabled to avoid 3232 * reading unassigned memory. 3233 */ 3234 WARN(1, "Missing input set index for flow_type %d\n", 3235 rule->flow_type); 3236 input_set = 0xFFFFFFFFFFFFFFFFULL; 3237 goto no_input_set; 3238 } 3239 3240 input_set = i40e_read_fd_input_set(pf, index); 3241 3242 no_input_set: 3243 if (input_set & I40E_L3_SRC_MASK) 3244 fsp->m_u.tcp_ip4_spec.ip4src = htonl(0xFFFFFFFF); 3245 3246 if (input_set & I40E_L3_DST_MASK) 3247 fsp->m_u.tcp_ip4_spec.ip4dst = htonl(0xFFFFFFFF); 3248 3249 if (input_set & I40E_L4_SRC_MASK) 3250 fsp->m_u.tcp_ip4_spec.psrc = htons(0xFFFF); 3251 3252 if (input_set & I40E_L4_DST_MASK) 3253 fsp->m_u.tcp_ip4_spec.pdst = htons(0xFFFF); 3254 3255 if (rule->dest_ctl == I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET) 3256 fsp->ring_cookie = RX_CLS_FLOW_DISC; 3257 else 3258 fsp->ring_cookie = rule->q_index; 3259 3260 if (rule->dest_vsi != pf->vsi[pf->lan_vsi]->id) { 3261 struct i40e_vsi *vsi; 3262 3263 vsi = i40e_find_vsi_from_id(pf, rule->dest_vsi); 3264 if (vsi && vsi->type == I40E_VSI_SRIOV) { 3265 /* VFs are zero-indexed by the driver, but ethtool 3266 * expects them to be one-indexed, so add one here 3267 */ 3268 u64 ring_vf = vsi->vf_id + 1; 3269 3270 ring_vf <<= ETHTOOL_RX_FLOW_SPEC_RING_VF_OFF; 3271 fsp->ring_cookie |= ring_vf; 3272 } 3273 } 3274 3275 if (rule->flex_filter) { 3276 userdef.flex_filter = true; 3277 userdef.flex_word = be16_to_cpu(rule->flex_word); 3278 userdef.flex_offset = rule->flex_offset; 3279 } 3280 3281 i40e_fill_rx_flow_user_data(fsp, &userdef); 3282 3283 return 0; 3284 } 3285 3286 /** 3287 * i40e_get_rxnfc - command to get RX flow classification rules 3288 * @netdev: network interface device structure 3289 * @cmd: ethtool rxnfc command 3290 * @rule_locs: pointer to store rule data 3291 * 3292 * Returns Success if the command is supported. 3293 **/ 3294 static int i40e_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd, 3295 u32 *rule_locs) 3296 { 3297 struct i40e_netdev_priv *np = netdev_priv(netdev); 3298 struct i40e_vsi *vsi = np->vsi; 3299 struct i40e_pf *pf = vsi->back; 3300 int ret = -EOPNOTSUPP; 3301 3302 switch (cmd->cmd) { 3303 case ETHTOOL_GRXRINGS: 3304 cmd->data = vsi->rss_size; 3305 ret = 0; 3306 break; 3307 case ETHTOOL_GRXFH: 3308 ret = i40e_get_rss_hash_opts(pf, cmd); 3309 break; 3310 case ETHTOOL_GRXCLSRLCNT: 3311 cmd->rule_cnt = pf->fdir_pf_active_filters; 3312 /* report total rule count */ 3313 cmd->data = i40e_get_fd_cnt_all(pf); 3314 ret = 0; 3315 break; 3316 case ETHTOOL_GRXCLSRULE: 3317 ret = i40e_get_ethtool_fdir_entry(pf, cmd); 3318 break; 3319 case ETHTOOL_GRXCLSRLALL: 3320 ret = i40e_get_ethtool_fdir_all(pf, cmd, rule_locs); 3321 break; 3322 default: 3323 break; 3324 } 3325 3326 return ret; 3327 } 3328 3329 /** 3330 * i40e_get_rss_hash_bits - Read RSS Hash bits from register 3331 * @nfc: pointer to user request 3332 * @i_setc: bits currently set 3333 * 3334 * Returns value of bits to be set per user request 3335 **/ 3336 static u64 i40e_get_rss_hash_bits(struct ethtool_rxnfc *nfc, u64 i_setc) 3337 { 3338 u64 i_set = i_setc; 3339 u64 src_l3 = 0, dst_l3 = 0; 3340 3341 if (nfc->data & RXH_L4_B_0_1) 3342 i_set |= I40E_L4_SRC_MASK; 3343 else 3344 i_set &= ~I40E_L4_SRC_MASK; 3345 if (nfc->data & RXH_L4_B_2_3) 3346 i_set |= I40E_L4_DST_MASK; 3347 else 3348 i_set &= ~I40E_L4_DST_MASK; 3349 3350 if (nfc->flow_type == TCP_V6_FLOW || nfc->flow_type == UDP_V6_FLOW) { 3351 src_l3 = I40E_L3_V6_SRC_MASK; 3352 dst_l3 = I40E_L3_V6_DST_MASK; 3353 } else if (nfc->flow_type == TCP_V4_FLOW || 3354 nfc->flow_type == UDP_V4_FLOW) { 3355 src_l3 = I40E_L3_SRC_MASK; 3356 dst_l3 = I40E_L3_DST_MASK; 3357 } else { 3358 /* Any other flow type are not supported here */ 3359 return i_set; 3360 } 3361 3362 if (nfc->data & RXH_IP_SRC) 3363 i_set |= src_l3; 3364 else 3365 i_set &= ~src_l3; 3366 if (nfc->data & RXH_IP_DST) 3367 i_set |= dst_l3; 3368 else 3369 i_set &= ~dst_l3; 3370 3371 return i_set; 3372 } 3373 3374 /** 3375 * i40e_set_rss_hash_opt - Enable/Disable flow types for RSS hash 3376 * @pf: pointer to the physical function struct 3377 * @nfc: ethtool rxnfc command 3378 * 3379 * Returns Success if the flow input set is supported. 3380 **/ 3381 static int i40e_set_rss_hash_opt(struct i40e_pf *pf, struct ethtool_rxnfc *nfc) 3382 { 3383 struct i40e_hw *hw = &pf->hw; 3384 u64 hena = (u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(0)) | 3385 ((u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(1)) << 32); 3386 u8 flow_pctype = 0; 3387 u64 i_set, i_setc; 3388 3389 if (pf->flags & I40E_FLAG_MFP_ENABLED) { 3390 dev_err(&pf->pdev->dev, 3391 "Change of RSS hash input set is not supported when MFP mode is enabled\n"); 3392 return -EOPNOTSUPP; 3393 } 3394 3395 /* RSS does not support anything other than hashing 3396 * to queues on src and dst IPs and ports 3397 */ 3398 if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST | 3399 RXH_L4_B_0_1 | RXH_L4_B_2_3)) 3400 return -EINVAL; 3401 3402 switch (nfc->flow_type) { 3403 case TCP_V4_FLOW: 3404 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_TCP; 3405 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE) 3406 hena |= 3407 BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_TCP_SYN_NO_ACK); 3408 break; 3409 case TCP_V6_FLOW: 3410 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_TCP; 3411 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE) 3412 hena |= 3413 BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_TCP_SYN_NO_ACK); 3414 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE) 3415 hena |= 3416 BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_TCP_SYN_NO_ACK); 3417 break; 3418 case UDP_V4_FLOW: 3419 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_UDP; 3420 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE) 3421 hena |= 3422 BIT_ULL(I40E_FILTER_PCTYPE_NONF_UNICAST_IPV4_UDP) | 3423 BIT_ULL(I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV4_UDP); 3424 3425 hena |= BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV4); 3426 break; 3427 case UDP_V6_FLOW: 3428 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_UDP; 3429 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE) 3430 hena |= 3431 BIT_ULL(I40E_FILTER_PCTYPE_NONF_UNICAST_IPV6_UDP) | 3432 BIT_ULL(I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV6_UDP); 3433 3434 hena |= BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV6); 3435 break; 3436 case AH_ESP_V4_FLOW: 3437 case AH_V4_FLOW: 3438 case ESP_V4_FLOW: 3439 case SCTP_V4_FLOW: 3440 if ((nfc->data & RXH_L4_B_0_1) || 3441 (nfc->data & RXH_L4_B_2_3)) 3442 return -EINVAL; 3443 hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_OTHER); 3444 break; 3445 case AH_ESP_V6_FLOW: 3446 case AH_V6_FLOW: 3447 case ESP_V6_FLOW: 3448 case SCTP_V6_FLOW: 3449 if ((nfc->data & RXH_L4_B_0_1) || 3450 (nfc->data & RXH_L4_B_2_3)) 3451 return -EINVAL; 3452 hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_OTHER); 3453 break; 3454 case IPV4_FLOW: 3455 hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_OTHER) | 3456 BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV4); 3457 break; 3458 case IPV6_FLOW: 3459 hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_OTHER) | 3460 BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV6); 3461 break; 3462 default: 3463 return -EINVAL; 3464 } 3465 3466 if (flow_pctype) { 3467 i_setc = (u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(0, 3468 flow_pctype)) | 3469 ((u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(1, 3470 flow_pctype)) << 32); 3471 i_set = i40e_get_rss_hash_bits(nfc, i_setc); 3472 i40e_write_rx_ctl(hw, I40E_GLQF_HASH_INSET(0, flow_pctype), 3473 (u32)i_set); 3474 i40e_write_rx_ctl(hw, I40E_GLQF_HASH_INSET(1, flow_pctype), 3475 (u32)(i_set >> 32)); 3476 hena |= BIT_ULL(flow_pctype); 3477 } 3478 3479 i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), (u32)hena); 3480 i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32)); 3481 i40e_flush(hw); 3482 3483 return 0; 3484 } 3485 3486 /** 3487 * i40e_update_ethtool_fdir_entry - Updates the fdir filter entry 3488 * @vsi: Pointer to the targeted VSI 3489 * @input: The filter to update or NULL to indicate deletion 3490 * @sw_idx: Software index to the filter 3491 * @cmd: The command to get or set Rx flow classification rules 3492 * 3493 * This function updates (or deletes) a Flow Director entry from 3494 * the hlist of the corresponding PF 3495 * 3496 * Returns 0 on success 3497 **/ 3498 static int i40e_update_ethtool_fdir_entry(struct i40e_vsi *vsi, 3499 struct i40e_fdir_filter *input, 3500 u16 sw_idx, 3501 struct ethtool_rxnfc *cmd) 3502 { 3503 struct i40e_fdir_filter *rule, *parent; 3504 struct i40e_pf *pf = vsi->back; 3505 struct hlist_node *node2; 3506 int err = -EINVAL; 3507 3508 parent = NULL; 3509 rule = NULL; 3510 3511 hlist_for_each_entry_safe(rule, node2, 3512 &pf->fdir_filter_list, fdir_node) { 3513 /* hash found, or no matching entry */ 3514 if (rule->fd_id >= sw_idx) 3515 break; 3516 parent = rule; 3517 } 3518 3519 /* if there is an old rule occupying our place remove it */ 3520 if (rule && (rule->fd_id == sw_idx)) { 3521 /* Remove this rule, since we're either deleting it, or 3522 * replacing it. 3523 */ 3524 err = i40e_add_del_fdir(vsi, rule, false); 3525 hlist_del(&rule->fdir_node); 3526 kfree(rule); 3527 pf->fdir_pf_active_filters--; 3528 } 3529 3530 /* If we weren't given an input, this is a delete, so just return the 3531 * error code indicating if there was an entry at the requested slot 3532 */ 3533 if (!input) 3534 return err; 3535 3536 /* Otherwise, install the new rule as requested */ 3537 INIT_HLIST_NODE(&input->fdir_node); 3538 3539 /* add filter to the list */ 3540 if (parent) 3541 hlist_add_behind(&input->fdir_node, &parent->fdir_node); 3542 else 3543 hlist_add_head(&input->fdir_node, 3544 &pf->fdir_filter_list); 3545 3546 /* update counts */ 3547 pf->fdir_pf_active_filters++; 3548 3549 return 0; 3550 } 3551 3552 /** 3553 * i40e_prune_flex_pit_list - Cleanup unused entries in FLX_PIT table 3554 * @pf: pointer to PF structure 3555 * 3556 * This function searches the list of filters and determines which FLX_PIT 3557 * entries are still required. It will prune any entries which are no longer 3558 * in use after the deletion. 3559 **/ 3560 static void i40e_prune_flex_pit_list(struct i40e_pf *pf) 3561 { 3562 struct i40e_flex_pit *entry, *tmp; 3563 struct i40e_fdir_filter *rule; 3564 3565 /* First, we'll check the l3 table */ 3566 list_for_each_entry_safe(entry, tmp, &pf->l3_flex_pit_list, list) { 3567 bool found = false; 3568 3569 hlist_for_each_entry(rule, &pf->fdir_filter_list, fdir_node) { 3570 if (rule->flow_type != IP_USER_FLOW) 3571 continue; 3572 if (rule->flex_filter && 3573 rule->flex_offset == entry->src_offset) { 3574 found = true; 3575 break; 3576 } 3577 } 3578 3579 /* If we didn't find the filter, then we can prune this entry 3580 * from the list. 3581 */ 3582 if (!found) { 3583 list_del(&entry->list); 3584 kfree(entry); 3585 } 3586 } 3587 3588 /* Followed by the L4 table */ 3589 list_for_each_entry_safe(entry, tmp, &pf->l4_flex_pit_list, list) { 3590 bool found = false; 3591 3592 hlist_for_each_entry(rule, &pf->fdir_filter_list, fdir_node) { 3593 /* Skip this filter if it's L3, since we already 3594 * checked those in the above loop 3595 */ 3596 if (rule->flow_type == IP_USER_FLOW) 3597 continue; 3598 if (rule->flex_filter && 3599 rule->flex_offset == entry->src_offset) { 3600 found = true; 3601 break; 3602 } 3603 } 3604 3605 /* If we didn't find the filter, then we can prune this entry 3606 * from the list. 3607 */ 3608 if (!found) { 3609 list_del(&entry->list); 3610 kfree(entry); 3611 } 3612 } 3613 } 3614 3615 /** 3616 * i40e_del_fdir_entry - Deletes a Flow Director filter entry 3617 * @vsi: Pointer to the targeted VSI 3618 * @cmd: The command to get or set Rx flow classification rules 3619 * 3620 * The function removes a Flow Director filter entry from the 3621 * hlist of the corresponding PF 3622 * 3623 * Returns 0 on success 3624 */ 3625 static int i40e_del_fdir_entry(struct i40e_vsi *vsi, 3626 struct ethtool_rxnfc *cmd) 3627 { 3628 struct ethtool_rx_flow_spec *fsp = 3629 (struct ethtool_rx_flow_spec *)&cmd->fs; 3630 struct i40e_pf *pf = vsi->back; 3631 int ret = 0; 3632 3633 if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) || 3634 test_bit(__I40E_RESET_INTR_RECEIVED, pf->state)) 3635 return -EBUSY; 3636 3637 if (test_bit(__I40E_FD_FLUSH_REQUESTED, pf->state)) 3638 return -EBUSY; 3639 3640 ret = i40e_update_ethtool_fdir_entry(vsi, NULL, fsp->location, cmd); 3641 3642 i40e_prune_flex_pit_list(pf); 3643 3644 i40e_fdir_check_and_reenable(pf); 3645 return ret; 3646 } 3647 3648 /** 3649 * i40e_unused_pit_index - Find an unused PIT index for given list 3650 * @pf: the PF data structure 3651 * 3652 * Find the first unused flexible PIT index entry. We search both the L3 and 3653 * L4 flexible PIT lists so that the returned index is unique and unused by 3654 * either currently programmed L3 or L4 filters. We use a bit field as storage 3655 * to track which indexes are already used. 3656 **/ 3657 static u8 i40e_unused_pit_index(struct i40e_pf *pf) 3658 { 3659 unsigned long available_index = 0xFF; 3660 struct i40e_flex_pit *entry; 3661 3662 /* We need to make sure that the new index isn't in use by either L3 3663 * or L4 filters so that IP_USER_FLOW filters can program both L3 and 3664 * L4 to use the same index. 3665 */ 3666 3667 list_for_each_entry(entry, &pf->l4_flex_pit_list, list) 3668 clear_bit(entry->pit_index, &available_index); 3669 3670 list_for_each_entry(entry, &pf->l3_flex_pit_list, list) 3671 clear_bit(entry->pit_index, &available_index); 3672 3673 return find_first_bit(&available_index, 8); 3674 } 3675 3676 /** 3677 * i40e_find_flex_offset - Find an existing flex src_offset 3678 * @flex_pit_list: L3 or L4 flex PIT list 3679 * @src_offset: new src_offset to find 3680 * 3681 * Searches the flex_pit_list for an existing offset. If no offset is 3682 * currently programmed, then this will return an ERR_PTR if there is no space 3683 * to add a new offset, otherwise it returns NULL. 3684 **/ 3685 static 3686 struct i40e_flex_pit *i40e_find_flex_offset(struct list_head *flex_pit_list, 3687 u16 src_offset) 3688 { 3689 struct i40e_flex_pit *entry; 3690 int size = 0; 3691 3692 /* Search for the src_offset first. If we find a matching entry 3693 * already programmed, we can simply re-use it. 3694 */ 3695 list_for_each_entry(entry, flex_pit_list, list) { 3696 size++; 3697 if (entry->src_offset == src_offset) 3698 return entry; 3699 } 3700 3701 /* If we haven't found an entry yet, then the provided src offset has 3702 * not yet been programmed. We will program the src offset later on, 3703 * but we need to indicate whether there is enough space to do so 3704 * here. We'll make use of ERR_PTR for this purpose. 3705 */ 3706 if (size >= I40E_FLEX_PIT_TABLE_SIZE) 3707 return ERR_PTR(-ENOSPC); 3708 3709 return NULL; 3710 } 3711 3712 /** 3713 * i40e_add_flex_offset - Add src_offset to flex PIT table list 3714 * @flex_pit_list: L3 or L4 flex PIT list 3715 * @src_offset: new src_offset to add 3716 * @pit_index: the PIT index to program 3717 * 3718 * This function programs the new src_offset to the list. It is expected that 3719 * i40e_find_flex_offset has already been tried and returned NULL, indicating 3720 * that this offset is not programmed, and that the list has enough space to 3721 * store another offset. 3722 * 3723 * Returns 0 on success, and negative value on error. 3724 **/ 3725 static int i40e_add_flex_offset(struct list_head *flex_pit_list, 3726 u16 src_offset, 3727 u8 pit_index) 3728 { 3729 struct i40e_flex_pit *new_pit, *entry; 3730 3731 new_pit = kzalloc(sizeof(*entry), GFP_KERNEL); 3732 if (!new_pit) 3733 return -ENOMEM; 3734 3735 new_pit->src_offset = src_offset; 3736 new_pit->pit_index = pit_index; 3737 3738 /* We need to insert this item such that the list is sorted by 3739 * src_offset in ascending order. 3740 */ 3741 list_for_each_entry(entry, flex_pit_list, list) { 3742 if (new_pit->src_offset < entry->src_offset) { 3743 list_add_tail(&new_pit->list, &entry->list); 3744 return 0; 3745 } 3746 3747 /* If we found an entry with our offset already programmed we 3748 * can simply return here, after freeing the memory. However, 3749 * if the pit_index does not match we need to report an error. 3750 */ 3751 if (new_pit->src_offset == entry->src_offset) { 3752 int err = 0; 3753 3754 /* If the PIT index is not the same we can't re-use 3755 * the entry, so we must report an error. 3756 */ 3757 if (new_pit->pit_index != entry->pit_index) 3758 err = -EINVAL; 3759 3760 kfree(new_pit); 3761 return err; 3762 } 3763 } 3764 3765 /* If we reached here, then we haven't yet added the item. This means 3766 * that we should add the item at the end of the list. 3767 */ 3768 list_add_tail(&new_pit->list, flex_pit_list); 3769 return 0; 3770 } 3771 3772 /** 3773 * __i40e_reprogram_flex_pit - Re-program specific FLX_PIT table 3774 * @pf: Pointer to the PF structure 3775 * @flex_pit_list: list of flexible src offsets in use 3776 * @flex_pit_start: index to first entry for this section of the table 3777 * 3778 * In order to handle flexible data, the hardware uses a table of values 3779 * called the FLX_PIT table. This table is used to indicate which sections of 3780 * the input correspond to what PIT index values. Unfortunately, hardware is 3781 * very restrictive about programming this table. Entries must be ordered by 3782 * src_offset in ascending order, without duplicates. Additionally, unused 3783 * entries must be set to the unused index value, and must have valid size and 3784 * length according to the src_offset ordering. 3785 * 3786 * This function will reprogram the FLX_PIT register from a book-keeping 3787 * structure that we guarantee is already ordered correctly, and has no more 3788 * than 3 entries. 3789 * 3790 * To make things easier, we only support flexible values of one word length, 3791 * rather than allowing variable length flexible values. 3792 **/ 3793 static void __i40e_reprogram_flex_pit(struct i40e_pf *pf, 3794 struct list_head *flex_pit_list, 3795 int flex_pit_start) 3796 { 3797 struct i40e_flex_pit *entry = NULL; 3798 u16 last_offset = 0; 3799 int i = 0, j = 0; 3800 3801 /* First, loop over the list of flex PIT entries, and reprogram the 3802 * registers. 3803 */ 3804 list_for_each_entry(entry, flex_pit_list, list) { 3805 /* We have to be careful when programming values for the 3806 * largest SRC_OFFSET value. It is possible that adding 3807 * additional empty values at the end would overflow the space 3808 * for the SRC_OFFSET in the FLX_PIT register. To avoid this, 3809 * we check here and add the empty values prior to adding the 3810 * largest value. 3811 * 3812 * To determine this, we will use a loop from i+1 to 3, which 3813 * will determine whether the unused entries would have valid 3814 * SRC_OFFSET. Note that there cannot be extra entries past 3815 * this value, because the only valid values would have been 3816 * larger than I40E_MAX_FLEX_SRC_OFFSET, and thus would not 3817 * have been added to the list in the first place. 3818 */ 3819 for (j = i + 1; j < 3; j++) { 3820 u16 offset = entry->src_offset + j; 3821 int index = flex_pit_start + i; 3822 u32 value = I40E_FLEX_PREP_VAL(I40E_FLEX_DEST_UNUSED, 3823 1, 3824 offset - 3); 3825 3826 if (offset > I40E_MAX_FLEX_SRC_OFFSET) { 3827 i40e_write_rx_ctl(&pf->hw, 3828 I40E_PRTQF_FLX_PIT(index), 3829 value); 3830 i++; 3831 } 3832 } 3833 3834 /* Now, we can program the actual value into the table */ 3835 i40e_write_rx_ctl(&pf->hw, 3836 I40E_PRTQF_FLX_PIT(flex_pit_start + i), 3837 I40E_FLEX_PREP_VAL(entry->pit_index + 50, 3838 1, 3839 entry->src_offset)); 3840 i++; 3841 } 3842 3843 /* In order to program the last entries in the table, we need to 3844 * determine the valid offset. If the list is empty, we'll just start 3845 * with 0. Otherwise, we'll start with the last item offset and add 1. 3846 * This ensures that all entries have valid sizes. If we don't do this 3847 * correctly, the hardware will disable flexible field parsing. 3848 */ 3849 if (!list_empty(flex_pit_list)) 3850 last_offset = list_prev_entry(entry, list)->src_offset + 1; 3851 3852 for (; i < 3; i++, last_offset++) { 3853 i40e_write_rx_ctl(&pf->hw, 3854 I40E_PRTQF_FLX_PIT(flex_pit_start + i), 3855 I40E_FLEX_PREP_VAL(I40E_FLEX_DEST_UNUSED, 3856 1, 3857 last_offset)); 3858 } 3859 } 3860 3861 /** 3862 * i40e_reprogram_flex_pit - Reprogram all FLX_PIT tables after input set change 3863 * @pf: pointer to the PF structure 3864 * 3865 * This function reprograms both the L3 and L4 FLX_PIT tables. See the 3866 * internal helper function for implementation details. 3867 **/ 3868 static void i40e_reprogram_flex_pit(struct i40e_pf *pf) 3869 { 3870 __i40e_reprogram_flex_pit(pf, &pf->l3_flex_pit_list, 3871 I40E_FLEX_PIT_IDX_START_L3); 3872 3873 __i40e_reprogram_flex_pit(pf, &pf->l4_flex_pit_list, 3874 I40E_FLEX_PIT_IDX_START_L4); 3875 3876 /* We also need to program the L3 and L4 GLQF ORT register */ 3877 i40e_write_rx_ctl(&pf->hw, 3878 I40E_GLQF_ORT(I40E_L3_GLQF_ORT_IDX), 3879 I40E_ORT_PREP_VAL(I40E_FLEX_PIT_IDX_START_L3, 3880 3, 1)); 3881 3882 i40e_write_rx_ctl(&pf->hw, 3883 I40E_GLQF_ORT(I40E_L4_GLQF_ORT_IDX), 3884 I40E_ORT_PREP_VAL(I40E_FLEX_PIT_IDX_START_L4, 3885 3, 1)); 3886 } 3887 3888 /** 3889 * i40e_flow_str - Converts a flow_type into a human readable string 3890 * @fsp: the flow specification 3891 * 3892 * Currently only flow types we support are included here, and the string 3893 * value attempts to match what ethtool would use to configure this flow type. 3894 **/ 3895 static const char *i40e_flow_str(struct ethtool_rx_flow_spec *fsp) 3896 { 3897 switch (fsp->flow_type & ~FLOW_EXT) { 3898 case TCP_V4_FLOW: 3899 return "tcp4"; 3900 case UDP_V4_FLOW: 3901 return "udp4"; 3902 case SCTP_V4_FLOW: 3903 return "sctp4"; 3904 case IP_USER_FLOW: 3905 return "ip4"; 3906 default: 3907 return "unknown"; 3908 } 3909 } 3910 3911 /** 3912 * i40e_pit_index_to_mask - Return the FLEX mask for a given PIT index 3913 * @pit_index: PIT index to convert 3914 * 3915 * Returns the mask for a given PIT index. Will return 0 if the pit_index is 3916 * of range. 3917 **/ 3918 static u64 i40e_pit_index_to_mask(int pit_index) 3919 { 3920 switch (pit_index) { 3921 case 0: 3922 return I40E_FLEX_50_MASK; 3923 case 1: 3924 return I40E_FLEX_51_MASK; 3925 case 2: 3926 return I40E_FLEX_52_MASK; 3927 case 3: 3928 return I40E_FLEX_53_MASK; 3929 case 4: 3930 return I40E_FLEX_54_MASK; 3931 case 5: 3932 return I40E_FLEX_55_MASK; 3933 case 6: 3934 return I40E_FLEX_56_MASK; 3935 case 7: 3936 return I40E_FLEX_57_MASK; 3937 default: 3938 return 0; 3939 } 3940 } 3941 3942 /** 3943 * i40e_print_input_set - Show changes between two input sets 3944 * @vsi: the vsi being configured 3945 * @old: the old input set 3946 * @new: the new input set 3947 * 3948 * Print the difference between old and new input sets by showing which series 3949 * of words are toggled on or off. Only displays the bits we actually support 3950 * changing. 3951 **/ 3952 static void i40e_print_input_set(struct i40e_vsi *vsi, u64 old, u64 new) 3953 { 3954 struct i40e_pf *pf = vsi->back; 3955 bool old_value, new_value; 3956 int i; 3957 3958 old_value = !!(old & I40E_L3_SRC_MASK); 3959 new_value = !!(new & I40E_L3_SRC_MASK); 3960 if (old_value != new_value) 3961 netif_info(pf, drv, vsi->netdev, "L3 source address: %s -> %s\n", 3962 old_value ? "ON" : "OFF", 3963 new_value ? "ON" : "OFF"); 3964 3965 old_value = !!(old & I40E_L3_DST_MASK); 3966 new_value = !!(new & I40E_L3_DST_MASK); 3967 if (old_value != new_value) 3968 netif_info(pf, drv, vsi->netdev, "L3 destination address: %s -> %s\n", 3969 old_value ? "ON" : "OFF", 3970 new_value ? "ON" : "OFF"); 3971 3972 old_value = !!(old & I40E_L4_SRC_MASK); 3973 new_value = !!(new & I40E_L4_SRC_MASK); 3974 if (old_value != new_value) 3975 netif_info(pf, drv, vsi->netdev, "L4 source port: %s -> %s\n", 3976 old_value ? "ON" : "OFF", 3977 new_value ? "ON" : "OFF"); 3978 3979 old_value = !!(old & I40E_L4_DST_MASK); 3980 new_value = !!(new & I40E_L4_DST_MASK); 3981 if (old_value != new_value) 3982 netif_info(pf, drv, vsi->netdev, "L4 destination port: %s -> %s\n", 3983 old_value ? "ON" : "OFF", 3984 new_value ? "ON" : "OFF"); 3985 3986 old_value = !!(old & I40E_VERIFY_TAG_MASK); 3987 new_value = !!(new & I40E_VERIFY_TAG_MASK); 3988 if (old_value != new_value) 3989 netif_info(pf, drv, vsi->netdev, "SCTP verification tag: %s -> %s\n", 3990 old_value ? "ON" : "OFF", 3991 new_value ? "ON" : "OFF"); 3992 3993 /* Show change of flexible filter entries */ 3994 for (i = 0; i < I40E_FLEX_INDEX_ENTRIES; i++) { 3995 u64 flex_mask = i40e_pit_index_to_mask(i); 3996 3997 old_value = !!(old & flex_mask); 3998 new_value = !!(new & flex_mask); 3999 if (old_value != new_value) 4000 netif_info(pf, drv, vsi->netdev, "FLEX index %d: %s -> %s\n", 4001 i, 4002 old_value ? "ON" : "OFF", 4003 new_value ? "ON" : "OFF"); 4004 } 4005 4006 netif_info(pf, drv, vsi->netdev, " Current input set: %0llx\n", 4007 old); 4008 netif_info(pf, drv, vsi->netdev, "Requested input set: %0llx\n", 4009 new); 4010 } 4011 4012 /** 4013 * i40e_check_fdir_input_set - Check that a given rx_flow_spec mask is valid 4014 * @vsi: pointer to the targeted VSI 4015 * @fsp: pointer to Rx flow specification 4016 * @userdef: userdefined data from flow specification 4017 * 4018 * Ensures that a given ethtool_rx_flow_spec has a valid mask. Some support 4019 * for partial matches exists with a few limitations. First, hardware only 4020 * supports masking by word boundary (2 bytes) and not per individual bit. 4021 * Second, hardware is limited to using one mask for a flow type and cannot 4022 * use a separate mask for each filter. 4023 * 4024 * To support these limitations, if we already have a configured filter for 4025 * the specified type, this function enforces that new filters of the type 4026 * match the configured input set. Otherwise, if we do not have a filter of 4027 * the specified type, we allow the input set to be updated to match the 4028 * desired filter. 4029 * 4030 * To help ensure that administrators understand why filters weren't displayed 4031 * as supported, we print a diagnostic message displaying how the input set 4032 * would change and warning to delete the preexisting filters if required. 4033 * 4034 * Returns 0 on successful input set match, and a negative return code on 4035 * failure. 4036 **/ 4037 static int i40e_check_fdir_input_set(struct i40e_vsi *vsi, 4038 struct ethtool_rx_flow_spec *fsp, 4039 struct i40e_rx_flow_userdef *userdef) 4040 { 4041 struct i40e_pf *pf = vsi->back; 4042 struct ethtool_tcpip4_spec *tcp_ip4_spec; 4043 struct ethtool_usrip4_spec *usr_ip4_spec; 4044 u64 current_mask, new_mask; 4045 bool new_flex_offset = false; 4046 bool flex_l3 = false; 4047 u16 *fdir_filter_count; 4048 u16 index, src_offset = 0; 4049 u8 pit_index = 0; 4050 int err; 4051 4052 switch (fsp->flow_type & ~FLOW_EXT) { 4053 case SCTP_V4_FLOW: 4054 index = I40E_FILTER_PCTYPE_NONF_IPV4_SCTP; 4055 fdir_filter_count = &pf->fd_sctp4_filter_cnt; 4056 break; 4057 case TCP_V4_FLOW: 4058 index = I40E_FILTER_PCTYPE_NONF_IPV4_TCP; 4059 fdir_filter_count = &pf->fd_tcp4_filter_cnt; 4060 break; 4061 case UDP_V4_FLOW: 4062 index = I40E_FILTER_PCTYPE_NONF_IPV4_UDP; 4063 fdir_filter_count = &pf->fd_udp4_filter_cnt; 4064 break; 4065 case IP_USER_FLOW: 4066 index = I40E_FILTER_PCTYPE_NONF_IPV4_OTHER; 4067 fdir_filter_count = &pf->fd_ip4_filter_cnt; 4068 flex_l3 = true; 4069 break; 4070 default: 4071 return -EOPNOTSUPP; 4072 } 4073 4074 /* Read the current input set from register memory. */ 4075 current_mask = i40e_read_fd_input_set(pf, index); 4076 new_mask = current_mask; 4077 4078 /* Determine, if any, the required changes to the input set in order 4079 * to support the provided mask. 4080 * 4081 * Hardware only supports masking at word (2 byte) granularity and does 4082 * not support full bitwise masking. This implementation simplifies 4083 * even further and only supports fully enabled or fully disabled 4084 * masks for each field, even though we could split the ip4src and 4085 * ip4dst fields. 4086 */ 4087 switch (fsp->flow_type & ~FLOW_EXT) { 4088 case SCTP_V4_FLOW: 4089 new_mask &= ~I40E_VERIFY_TAG_MASK; 4090 /* Fall through */ 4091 case TCP_V4_FLOW: 4092 case UDP_V4_FLOW: 4093 tcp_ip4_spec = &fsp->m_u.tcp_ip4_spec; 4094 4095 /* IPv4 source address */ 4096 if (tcp_ip4_spec->ip4src == htonl(0xFFFFFFFF)) 4097 new_mask |= I40E_L3_SRC_MASK; 4098 else if (!tcp_ip4_spec->ip4src) 4099 new_mask &= ~I40E_L3_SRC_MASK; 4100 else 4101 return -EOPNOTSUPP; 4102 4103 /* IPv4 destination address */ 4104 if (tcp_ip4_spec->ip4dst == htonl(0xFFFFFFFF)) 4105 new_mask |= I40E_L3_DST_MASK; 4106 else if (!tcp_ip4_spec->ip4dst) 4107 new_mask &= ~I40E_L3_DST_MASK; 4108 else 4109 return -EOPNOTSUPP; 4110 4111 /* L4 source port */ 4112 if (tcp_ip4_spec->psrc == htons(0xFFFF)) 4113 new_mask |= I40E_L4_SRC_MASK; 4114 else if (!tcp_ip4_spec->psrc) 4115 new_mask &= ~I40E_L4_SRC_MASK; 4116 else 4117 return -EOPNOTSUPP; 4118 4119 /* L4 destination port */ 4120 if (tcp_ip4_spec->pdst == htons(0xFFFF)) 4121 new_mask |= I40E_L4_DST_MASK; 4122 else if (!tcp_ip4_spec->pdst) 4123 new_mask &= ~I40E_L4_DST_MASK; 4124 else 4125 return -EOPNOTSUPP; 4126 4127 /* Filtering on Type of Service is not supported. */ 4128 if (tcp_ip4_spec->tos) 4129 return -EOPNOTSUPP; 4130 4131 break; 4132 case IP_USER_FLOW: 4133 usr_ip4_spec = &fsp->m_u.usr_ip4_spec; 4134 4135 /* IPv4 source address */ 4136 if (usr_ip4_spec->ip4src == htonl(0xFFFFFFFF)) 4137 new_mask |= I40E_L3_SRC_MASK; 4138 else if (!usr_ip4_spec->ip4src) 4139 new_mask &= ~I40E_L3_SRC_MASK; 4140 else 4141 return -EOPNOTSUPP; 4142 4143 /* IPv4 destination address */ 4144 if (usr_ip4_spec->ip4dst == htonl(0xFFFFFFFF)) 4145 new_mask |= I40E_L3_DST_MASK; 4146 else if (!usr_ip4_spec->ip4dst) 4147 new_mask &= ~I40E_L3_DST_MASK; 4148 else 4149 return -EOPNOTSUPP; 4150 4151 /* First 4 bytes of L4 header */ 4152 if (usr_ip4_spec->l4_4_bytes == htonl(0xFFFFFFFF)) 4153 new_mask |= I40E_L4_SRC_MASK | I40E_L4_DST_MASK; 4154 else if (!usr_ip4_spec->l4_4_bytes) 4155 new_mask &= ~(I40E_L4_SRC_MASK | I40E_L4_DST_MASK); 4156 else 4157 return -EOPNOTSUPP; 4158 4159 /* Filtering on Type of Service is not supported. */ 4160 if (usr_ip4_spec->tos) 4161 return -EOPNOTSUPP; 4162 4163 /* Filtering on IP version is not supported */ 4164 if (usr_ip4_spec->ip_ver) 4165 return -EINVAL; 4166 4167 /* Filtering on L4 protocol is not supported */ 4168 if (usr_ip4_spec->proto) 4169 return -EINVAL; 4170 4171 break; 4172 default: 4173 return -EOPNOTSUPP; 4174 } 4175 4176 /* First, clear all flexible filter entries */ 4177 new_mask &= ~I40E_FLEX_INPUT_MASK; 4178 4179 /* If we have a flexible filter, try to add this offset to the correct 4180 * flexible filter PIT list. Once finished, we can update the mask. 4181 * If the src_offset changed, we will get a new mask value which will 4182 * trigger an input set change. 4183 */ 4184 if (userdef->flex_filter) { 4185 struct i40e_flex_pit *l3_flex_pit = NULL, *flex_pit = NULL; 4186 4187 /* Flexible offset must be even, since the flexible payload 4188 * must be aligned on 2-byte boundary. 4189 */ 4190 if (userdef->flex_offset & 0x1) { 4191 dev_warn(&pf->pdev->dev, 4192 "Flexible data offset must be 2-byte aligned\n"); 4193 return -EINVAL; 4194 } 4195 4196 src_offset = userdef->flex_offset >> 1; 4197 4198 /* FLX_PIT source offset value is only so large */ 4199 if (src_offset > I40E_MAX_FLEX_SRC_OFFSET) { 4200 dev_warn(&pf->pdev->dev, 4201 "Flexible data must reside within first 64 bytes of the packet payload\n"); 4202 return -EINVAL; 4203 } 4204 4205 /* See if this offset has already been programmed. If we get 4206 * an ERR_PTR, then the filter is not safe to add. Otherwise, 4207 * if we get a NULL pointer, this means we will need to add 4208 * the offset. 4209 */ 4210 flex_pit = i40e_find_flex_offset(&pf->l4_flex_pit_list, 4211 src_offset); 4212 if (IS_ERR(flex_pit)) 4213 return PTR_ERR(flex_pit); 4214 4215 /* IP_USER_FLOW filters match both L4 (ICMP) and L3 (unknown) 4216 * packet types, and thus we need to program both L3 and L4 4217 * flexible values. These must have identical flexible index, 4218 * as otherwise we can't correctly program the input set. So 4219 * we'll find both an L3 and L4 index and make sure they are 4220 * the same. 4221 */ 4222 if (flex_l3) { 4223 l3_flex_pit = 4224 i40e_find_flex_offset(&pf->l3_flex_pit_list, 4225 src_offset); 4226 if (IS_ERR(l3_flex_pit)) 4227 return PTR_ERR(l3_flex_pit); 4228 4229 if (flex_pit) { 4230 /* If we already had a matching L4 entry, we 4231 * need to make sure that the L3 entry we 4232 * obtained uses the same index. 4233 */ 4234 if (l3_flex_pit) { 4235 if (l3_flex_pit->pit_index != 4236 flex_pit->pit_index) { 4237 return -EINVAL; 4238 } 4239 } else { 4240 new_flex_offset = true; 4241 } 4242 } else { 4243 flex_pit = l3_flex_pit; 4244 } 4245 } 4246 4247 /* If we didn't find an existing flex offset, we need to 4248 * program a new one. However, we don't immediately program it 4249 * here because we will wait to program until after we check 4250 * that it is safe to change the input set. 4251 */ 4252 if (!flex_pit) { 4253 new_flex_offset = true; 4254 pit_index = i40e_unused_pit_index(pf); 4255 } else { 4256 pit_index = flex_pit->pit_index; 4257 } 4258 4259 /* Update the mask with the new offset */ 4260 new_mask |= i40e_pit_index_to_mask(pit_index); 4261 } 4262 4263 /* If the mask and flexible filter offsets for this filter match the 4264 * currently programmed values we don't need any input set change, so 4265 * this filter is safe to install. 4266 */ 4267 if (new_mask == current_mask && !new_flex_offset) 4268 return 0; 4269 4270 netif_info(pf, drv, vsi->netdev, "Input set change requested for %s flows:\n", 4271 i40e_flow_str(fsp)); 4272 i40e_print_input_set(vsi, current_mask, new_mask); 4273 if (new_flex_offset) { 4274 netif_info(pf, drv, vsi->netdev, "FLEX index %d: Offset -> %d", 4275 pit_index, src_offset); 4276 } 4277 4278 /* Hardware input sets are global across multiple ports, so even the 4279 * main port cannot change them when in MFP mode as this would impact 4280 * any filters on the other ports. 4281 */ 4282 if (pf->flags & I40E_FLAG_MFP_ENABLED) { 4283 netif_err(pf, drv, vsi->netdev, "Cannot change Flow Director input sets while MFP is enabled\n"); 4284 return -EOPNOTSUPP; 4285 } 4286 4287 /* This filter requires us to update the input set. However, hardware 4288 * only supports one input set per flow type, and does not support 4289 * separate masks for each filter. This means that we can only support 4290 * a single mask for all filters of a specific type. 4291 * 4292 * If we have preexisting filters, they obviously depend on the 4293 * current programmed input set. Display a diagnostic message in this 4294 * case explaining why the filter could not be accepted. 4295 */ 4296 if (*fdir_filter_count) { 4297 netif_err(pf, drv, vsi->netdev, "Cannot change input set for %s flows until %d preexisting filters are removed\n", 4298 i40e_flow_str(fsp), 4299 *fdir_filter_count); 4300 return -EOPNOTSUPP; 4301 } 4302 4303 i40e_write_fd_input_set(pf, index, new_mask); 4304 4305 /* IP_USER_FLOW filters match both IPv4/Other and IPv4/Fragmented 4306 * frames. If we're programming the input set for IPv4/Other, we also 4307 * need to program the IPv4/Fragmented input set. Since we don't have 4308 * separate support, we'll always assume and enforce that the two flow 4309 * types must have matching input sets. 4310 */ 4311 if (index == I40E_FILTER_PCTYPE_NONF_IPV4_OTHER) 4312 i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_FRAG_IPV4, 4313 new_mask); 4314 4315 /* Add the new offset and update table, if necessary */ 4316 if (new_flex_offset) { 4317 err = i40e_add_flex_offset(&pf->l4_flex_pit_list, src_offset, 4318 pit_index); 4319 if (err) 4320 return err; 4321 4322 if (flex_l3) { 4323 err = i40e_add_flex_offset(&pf->l3_flex_pit_list, 4324 src_offset, 4325 pit_index); 4326 if (err) 4327 return err; 4328 } 4329 4330 i40e_reprogram_flex_pit(pf); 4331 } 4332 4333 return 0; 4334 } 4335 4336 /** 4337 * i40e_match_fdir_filter - Return true of two filters match 4338 * @a: pointer to filter struct 4339 * @b: pointer to filter struct 4340 * 4341 * Returns true if the two filters match exactly the same criteria. I.e. they 4342 * match the same flow type and have the same parameters. We don't need to 4343 * check any input-set since all filters of the same flow type must use the 4344 * same input set. 4345 **/ 4346 static bool i40e_match_fdir_filter(struct i40e_fdir_filter *a, 4347 struct i40e_fdir_filter *b) 4348 { 4349 /* The filters do not much if any of these criteria differ. */ 4350 if (a->dst_ip != b->dst_ip || 4351 a->src_ip != b->src_ip || 4352 a->dst_port != b->dst_port || 4353 a->src_port != b->src_port || 4354 a->flow_type != b->flow_type || 4355 a->ip4_proto != b->ip4_proto) 4356 return false; 4357 4358 return true; 4359 } 4360 4361 /** 4362 * i40e_disallow_matching_filters - Check that new filters differ 4363 * @vsi: pointer to the targeted VSI 4364 * @input: new filter to check 4365 * 4366 * Due to hardware limitations, it is not possible for two filters that match 4367 * similar criteria to be programmed at the same time. This is true for a few 4368 * reasons: 4369 * 4370 * (a) all filters matching a particular flow type must use the same input 4371 * set, that is they must match the same criteria. 4372 * (b) different flow types will never match the same packet, as the flow type 4373 * is decided by hardware before checking which rules apply. 4374 * (c) hardware has no way to distinguish which order filters apply in. 4375 * 4376 * Due to this, we can't really support using the location data to order 4377 * filters in the hardware parsing. It is technically possible for the user to 4378 * request two filters matching the same criteria but which select different 4379 * queues. In this case, rather than keep both filters in the list, we reject 4380 * the 2nd filter when the user requests adding it. 4381 * 4382 * This avoids needing to track location for programming the filter to 4383 * hardware, and ensures that we avoid some strange scenarios involving 4384 * deleting filters which match the same criteria. 4385 **/ 4386 static int i40e_disallow_matching_filters(struct i40e_vsi *vsi, 4387 struct i40e_fdir_filter *input) 4388 { 4389 struct i40e_pf *pf = vsi->back; 4390 struct i40e_fdir_filter *rule; 4391 struct hlist_node *node2; 4392 4393 /* Loop through every filter, and check that it doesn't match */ 4394 hlist_for_each_entry_safe(rule, node2, 4395 &pf->fdir_filter_list, fdir_node) { 4396 /* Don't check the filters match if they share the same fd_id, 4397 * since the new filter is actually just updating the target 4398 * of the old filter. 4399 */ 4400 if (rule->fd_id == input->fd_id) 4401 continue; 4402 4403 /* If any filters match, then print a warning message to the 4404 * kernel message buffer and bail out. 4405 */ 4406 if (i40e_match_fdir_filter(rule, input)) { 4407 dev_warn(&pf->pdev->dev, 4408 "Existing user defined filter %d already matches this flow.\n", 4409 rule->fd_id); 4410 return -EINVAL; 4411 } 4412 } 4413 4414 return 0; 4415 } 4416 4417 /** 4418 * i40e_add_fdir_ethtool - Add/Remove Flow Director filters 4419 * @vsi: pointer to the targeted VSI 4420 * @cmd: command to get or set RX flow classification rules 4421 * 4422 * Add Flow Director filters for a specific flow spec based on their 4423 * protocol. Returns 0 if the filters were successfully added. 4424 **/ 4425 static int i40e_add_fdir_ethtool(struct i40e_vsi *vsi, 4426 struct ethtool_rxnfc *cmd) 4427 { 4428 struct i40e_rx_flow_userdef userdef; 4429 struct ethtool_rx_flow_spec *fsp; 4430 struct i40e_fdir_filter *input; 4431 u16 dest_vsi = 0, q_index = 0; 4432 struct i40e_pf *pf; 4433 int ret = -EINVAL; 4434 u8 dest_ctl; 4435 4436 if (!vsi) 4437 return -EINVAL; 4438 pf = vsi->back; 4439 4440 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED)) 4441 return -EOPNOTSUPP; 4442 4443 if (test_bit(__I40E_FD_SB_AUTO_DISABLED, pf->state)) 4444 return -ENOSPC; 4445 4446 if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) || 4447 test_bit(__I40E_RESET_INTR_RECEIVED, pf->state)) 4448 return -EBUSY; 4449 4450 if (test_bit(__I40E_FD_FLUSH_REQUESTED, pf->state)) 4451 return -EBUSY; 4452 4453 fsp = (struct ethtool_rx_flow_spec *)&cmd->fs; 4454 4455 /* Parse the user-defined field */ 4456 if (i40e_parse_rx_flow_user_data(fsp, &userdef)) 4457 return -EINVAL; 4458 4459 /* Extended MAC field is not supported */ 4460 if (fsp->flow_type & FLOW_MAC_EXT) 4461 return -EINVAL; 4462 4463 ret = i40e_check_fdir_input_set(vsi, fsp, &userdef); 4464 if (ret) 4465 return ret; 4466 4467 if (fsp->location >= (pf->hw.func_caps.fd_filters_best_effort + 4468 pf->hw.func_caps.fd_filters_guaranteed)) { 4469 return -EINVAL; 4470 } 4471 4472 /* ring_cookie is either the drop index, or is a mask of the queue 4473 * index and VF id we wish to target. 4474 */ 4475 if (fsp->ring_cookie == RX_CLS_FLOW_DISC) { 4476 dest_ctl = I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET; 4477 } else { 4478 u32 ring = ethtool_get_flow_spec_ring(fsp->ring_cookie); 4479 u8 vf = ethtool_get_flow_spec_ring_vf(fsp->ring_cookie); 4480 4481 if (!vf) { 4482 if (ring >= vsi->num_queue_pairs) 4483 return -EINVAL; 4484 dest_vsi = vsi->id; 4485 } else { 4486 /* VFs are zero-indexed, so we subtract one here */ 4487 vf--; 4488 4489 if (vf >= pf->num_alloc_vfs) 4490 return -EINVAL; 4491 if (ring >= pf->vf[vf].num_queue_pairs) 4492 return -EINVAL; 4493 dest_vsi = pf->vf[vf].lan_vsi_id; 4494 } 4495 dest_ctl = I40E_FILTER_PROGRAM_DESC_DEST_DIRECT_PACKET_QINDEX; 4496 q_index = ring; 4497 } 4498 4499 input = kzalloc(sizeof(*input), GFP_KERNEL); 4500 4501 if (!input) 4502 return -ENOMEM; 4503 4504 input->fd_id = fsp->location; 4505 input->q_index = q_index; 4506 input->dest_vsi = dest_vsi; 4507 input->dest_ctl = dest_ctl; 4508 input->fd_status = I40E_FILTER_PROGRAM_DESC_FD_STATUS_FD_ID; 4509 input->cnt_index = I40E_FD_SB_STAT_IDX(pf->hw.pf_id); 4510 input->dst_ip = fsp->h_u.tcp_ip4_spec.ip4src; 4511 input->src_ip = fsp->h_u.tcp_ip4_spec.ip4dst; 4512 input->flow_type = fsp->flow_type & ~FLOW_EXT; 4513 input->ip4_proto = fsp->h_u.usr_ip4_spec.proto; 4514 4515 /* Reverse the src and dest notion, since the HW expects them to be from 4516 * Tx perspective where as the input from user is from Rx filter view. 4517 */ 4518 input->dst_port = fsp->h_u.tcp_ip4_spec.psrc; 4519 input->src_port = fsp->h_u.tcp_ip4_spec.pdst; 4520 input->dst_ip = fsp->h_u.tcp_ip4_spec.ip4src; 4521 input->src_ip = fsp->h_u.tcp_ip4_spec.ip4dst; 4522 4523 if (userdef.flex_filter) { 4524 input->flex_filter = true; 4525 input->flex_word = cpu_to_be16(userdef.flex_word); 4526 input->flex_offset = userdef.flex_offset; 4527 } 4528 4529 /* Avoid programming two filters with identical match criteria. */ 4530 ret = i40e_disallow_matching_filters(vsi, input); 4531 if (ret) 4532 goto free_filter_memory; 4533 4534 /* Add the input filter to the fdir_input_list, possibly replacing 4535 * a previous filter. Do not free the input structure after adding it 4536 * to the list as this would cause a use-after-free bug. 4537 */ 4538 i40e_update_ethtool_fdir_entry(vsi, input, fsp->location, NULL); 4539 ret = i40e_add_del_fdir(vsi, input, true); 4540 if (ret) 4541 goto remove_sw_rule; 4542 return 0; 4543 4544 remove_sw_rule: 4545 hlist_del(&input->fdir_node); 4546 pf->fdir_pf_active_filters--; 4547 free_filter_memory: 4548 kfree(input); 4549 return ret; 4550 } 4551 4552 /** 4553 * i40e_set_rxnfc - command to set RX flow classification rules 4554 * @netdev: network interface device structure 4555 * @cmd: ethtool rxnfc command 4556 * 4557 * Returns Success if the command is supported. 4558 **/ 4559 static int i40e_set_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd) 4560 { 4561 struct i40e_netdev_priv *np = netdev_priv(netdev); 4562 struct i40e_vsi *vsi = np->vsi; 4563 struct i40e_pf *pf = vsi->back; 4564 int ret = -EOPNOTSUPP; 4565 4566 switch (cmd->cmd) { 4567 case ETHTOOL_SRXFH: 4568 ret = i40e_set_rss_hash_opt(pf, cmd); 4569 break; 4570 case ETHTOOL_SRXCLSRLINS: 4571 ret = i40e_add_fdir_ethtool(vsi, cmd); 4572 break; 4573 case ETHTOOL_SRXCLSRLDEL: 4574 ret = i40e_del_fdir_entry(vsi, cmd); 4575 break; 4576 default: 4577 break; 4578 } 4579 4580 return ret; 4581 } 4582 4583 /** 4584 * i40e_max_channels - get Max number of combined channels supported 4585 * @vsi: vsi pointer 4586 **/ 4587 static unsigned int i40e_max_channels(struct i40e_vsi *vsi) 4588 { 4589 /* TODO: This code assumes DCB and FD is disabled for now. */ 4590 return vsi->alloc_queue_pairs; 4591 } 4592 4593 /** 4594 * i40e_get_channels - Get the current channels enabled and max supported etc. 4595 * @dev: network interface device structure 4596 * @ch: ethtool channels structure 4597 * 4598 * We don't support separate tx and rx queues as channels. The other count 4599 * represents how many queues are being used for control. max_combined counts 4600 * how many queue pairs we can support. They may not be mapped 1 to 1 with 4601 * q_vectors since we support a lot more queue pairs than q_vectors. 4602 **/ 4603 static void i40e_get_channels(struct net_device *dev, 4604 struct ethtool_channels *ch) 4605 { 4606 struct i40e_netdev_priv *np = netdev_priv(dev); 4607 struct i40e_vsi *vsi = np->vsi; 4608 struct i40e_pf *pf = vsi->back; 4609 4610 /* report maximum channels */ 4611 ch->max_combined = i40e_max_channels(vsi); 4612 4613 /* report info for other vector */ 4614 ch->other_count = (pf->flags & I40E_FLAG_FD_SB_ENABLED) ? 1 : 0; 4615 ch->max_other = ch->other_count; 4616 4617 /* Note: This code assumes DCB is disabled for now. */ 4618 ch->combined_count = vsi->num_queue_pairs; 4619 } 4620 4621 /** 4622 * i40e_set_channels - Set the new channels count. 4623 * @dev: network interface device structure 4624 * @ch: ethtool channels structure 4625 * 4626 * The new channels count may not be the same as requested by the user 4627 * since it gets rounded down to a power of 2 value. 4628 **/ 4629 static int i40e_set_channels(struct net_device *dev, 4630 struct ethtool_channels *ch) 4631 { 4632 const u8 drop = I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET; 4633 struct i40e_netdev_priv *np = netdev_priv(dev); 4634 unsigned int count = ch->combined_count; 4635 struct i40e_vsi *vsi = np->vsi; 4636 struct i40e_pf *pf = vsi->back; 4637 struct i40e_fdir_filter *rule; 4638 struct hlist_node *node2; 4639 int new_count; 4640 int err = 0; 4641 4642 /* We do not support setting channels for any other VSI at present */ 4643 if (vsi->type != I40E_VSI_MAIN) 4644 return -EINVAL; 4645 4646 /* We do not support setting channels via ethtool when TCs are 4647 * configured through mqprio 4648 */ 4649 if (pf->flags & I40E_FLAG_TC_MQPRIO) 4650 return -EINVAL; 4651 4652 /* verify they are not requesting separate vectors */ 4653 if (!count || ch->rx_count || ch->tx_count) 4654 return -EINVAL; 4655 4656 /* verify other_count has not changed */ 4657 if (ch->other_count != ((pf->flags & I40E_FLAG_FD_SB_ENABLED) ? 1 : 0)) 4658 return -EINVAL; 4659 4660 /* verify the number of channels does not exceed hardware limits */ 4661 if (count > i40e_max_channels(vsi)) 4662 return -EINVAL; 4663 4664 /* verify that the number of channels does not invalidate any current 4665 * flow director rules 4666 */ 4667 hlist_for_each_entry_safe(rule, node2, 4668 &pf->fdir_filter_list, fdir_node) { 4669 if (rule->dest_ctl != drop && count <= rule->q_index) { 4670 dev_warn(&pf->pdev->dev, 4671 "Existing user defined filter %d assigns flow to queue %d\n", 4672 rule->fd_id, rule->q_index); 4673 err = -EINVAL; 4674 } 4675 } 4676 4677 if (err) { 4678 dev_err(&pf->pdev->dev, 4679 "Existing filter rules must be deleted to reduce combined channel count to %d\n", 4680 count); 4681 return err; 4682 } 4683 4684 /* update feature limits from largest to smallest supported values */ 4685 /* TODO: Flow director limit, DCB etc */ 4686 4687 /* use rss_reconfig to rebuild with new queue count and update traffic 4688 * class queue mapping 4689 */ 4690 new_count = i40e_reconfig_rss_queues(pf, count); 4691 if (new_count > 0) 4692 return 0; 4693 else 4694 return -EINVAL; 4695 } 4696 4697 /** 4698 * i40e_get_rxfh_key_size - get the RSS hash key size 4699 * @netdev: network interface device structure 4700 * 4701 * Returns the table size. 4702 **/ 4703 static u32 i40e_get_rxfh_key_size(struct net_device *netdev) 4704 { 4705 return I40E_HKEY_ARRAY_SIZE; 4706 } 4707 4708 /** 4709 * i40e_get_rxfh_indir_size - get the rx flow hash indirection table size 4710 * @netdev: network interface device structure 4711 * 4712 * Returns the table size. 4713 **/ 4714 static u32 i40e_get_rxfh_indir_size(struct net_device *netdev) 4715 { 4716 return I40E_HLUT_ARRAY_SIZE; 4717 } 4718 4719 /** 4720 * i40e_get_rxfh - get the rx flow hash indirection table 4721 * @netdev: network interface device structure 4722 * @indir: indirection table 4723 * @key: hash key 4724 * @hfunc: hash function 4725 * 4726 * Reads the indirection table directly from the hardware. Returns 0 on 4727 * success. 4728 **/ 4729 static int i40e_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key, 4730 u8 *hfunc) 4731 { 4732 struct i40e_netdev_priv *np = netdev_priv(netdev); 4733 struct i40e_vsi *vsi = np->vsi; 4734 u8 *lut, *seed = NULL; 4735 int ret; 4736 u16 i; 4737 4738 if (hfunc) 4739 *hfunc = ETH_RSS_HASH_TOP; 4740 4741 if (!indir) 4742 return 0; 4743 4744 seed = key; 4745 lut = kzalloc(I40E_HLUT_ARRAY_SIZE, GFP_KERNEL); 4746 if (!lut) 4747 return -ENOMEM; 4748 ret = i40e_get_rss(vsi, seed, lut, I40E_HLUT_ARRAY_SIZE); 4749 if (ret) 4750 goto out; 4751 for (i = 0; i < I40E_HLUT_ARRAY_SIZE; i++) 4752 indir[i] = (u32)(lut[i]); 4753 4754 out: 4755 kfree(lut); 4756 4757 return ret; 4758 } 4759 4760 /** 4761 * i40e_set_rxfh - set the rx flow hash indirection table 4762 * @netdev: network interface device structure 4763 * @indir: indirection table 4764 * @key: hash key 4765 * @hfunc: hash function to use 4766 * 4767 * Returns -EINVAL if the table specifies an invalid queue id, otherwise 4768 * returns 0 after programming the table. 4769 **/ 4770 static int i40e_set_rxfh(struct net_device *netdev, const u32 *indir, 4771 const u8 *key, const u8 hfunc) 4772 { 4773 struct i40e_netdev_priv *np = netdev_priv(netdev); 4774 struct i40e_vsi *vsi = np->vsi; 4775 struct i40e_pf *pf = vsi->back; 4776 u8 *seed = NULL; 4777 u16 i; 4778 4779 if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP) 4780 return -EOPNOTSUPP; 4781 4782 if (key) { 4783 if (!vsi->rss_hkey_user) { 4784 vsi->rss_hkey_user = kzalloc(I40E_HKEY_ARRAY_SIZE, 4785 GFP_KERNEL); 4786 if (!vsi->rss_hkey_user) 4787 return -ENOMEM; 4788 } 4789 memcpy(vsi->rss_hkey_user, key, I40E_HKEY_ARRAY_SIZE); 4790 seed = vsi->rss_hkey_user; 4791 } 4792 if (!vsi->rss_lut_user) { 4793 vsi->rss_lut_user = kzalloc(I40E_HLUT_ARRAY_SIZE, GFP_KERNEL); 4794 if (!vsi->rss_lut_user) 4795 return -ENOMEM; 4796 } 4797 4798 /* Each 32 bits pointed by 'indir' is stored with a lut entry */ 4799 if (indir) 4800 for (i = 0; i < I40E_HLUT_ARRAY_SIZE; i++) 4801 vsi->rss_lut_user[i] = (u8)(indir[i]); 4802 else 4803 i40e_fill_rss_lut(pf, vsi->rss_lut_user, I40E_HLUT_ARRAY_SIZE, 4804 vsi->rss_size); 4805 4806 return i40e_config_rss(vsi, seed, vsi->rss_lut_user, 4807 I40E_HLUT_ARRAY_SIZE); 4808 } 4809 4810 /** 4811 * i40e_get_priv_flags - report device private flags 4812 * @dev: network interface device structure 4813 * 4814 * The get string set count and the string set should be matched for each 4815 * flag returned. Add new strings for each flag to the i40e_gstrings_priv_flags 4816 * array. 4817 * 4818 * Returns a u32 bitmap of flags. 4819 **/ 4820 static u32 i40e_get_priv_flags(struct net_device *dev) 4821 { 4822 struct i40e_netdev_priv *np = netdev_priv(dev); 4823 struct i40e_vsi *vsi = np->vsi; 4824 struct i40e_pf *pf = vsi->back; 4825 u32 i, j, ret_flags = 0; 4826 4827 for (i = 0; i < I40E_PRIV_FLAGS_STR_LEN; i++) { 4828 const struct i40e_priv_flags *priv_flags; 4829 4830 priv_flags = &i40e_gstrings_priv_flags[i]; 4831 4832 if (priv_flags->flag & pf->flags) 4833 ret_flags |= BIT(i); 4834 } 4835 4836 if (pf->hw.pf_id != 0) 4837 return ret_flags; 4838 4839 for (j = 0; j < I40E_GL_PRIV_FLAGS_STR_LEN; j++) { 4840 const struct i40e_priv_flags *priv_flags; 4841 4842 priv_flags = &i40e_gl_gstrings_priv_flags[j]; 4843 4844 if (priv_flags->flag & pf->flags) 4845 ret_flags |= BIT(i + j); 4846 } 4847 4848 return ret_flags; 4849 } 4850 4851 /** 4852 * i40e_set_priv_flags - set private flags 4853 * @dev: network interface device structure 4854 * @flags: bit flags to be set 4855 **/ 4856 static int i40e_set_priv_flags(struct net_device *dev, u32 flags) 4857 { 4858 struct i40e_netdev_priv *np = netdev_priv(dev); 4859 u64 orig_flags, new_flags, changed_flags; 4860 enum i40e_admin_queue_err adq_err; 4861 struct i40e_vsi *vsi = np->vsi; 4862 struct i40e_pf *pf = vsi->back; 4863 bool is_reset_needed; 4864 i40e_status status; 4865 u32 i, j; 4866 4867 orig_flags = READ_ONCE(pf->flags); 4868 new_flags = orig_flags; 4869 4870 for (i = 0; i < I40E_PRIV_FLAGS_STR_LEN; i++) { 4871 const struct i40e_priv_flags *priv_flags; 4872 4873 priv_flags = &i40e_gstrings_priv_flags[i]; 4874 4875 if (flags & BIT(i)) 4876 new_flags |= priv_flags->flag; 4877 else 4878 new_flags &= ~(priv_flags->flag); 4879 4880 /* If this is a read-only flag, it can't be changed */ 4881 if (priv_flags->read_only && 4882 ((orig_flags ^ new_flags) & ~BIT(i))) 4883 return -EOPNOTSUPP; 4884 } 4885 4886 if (pf->hw.pf_id != 0) 4887 goto flags_complete; 4888 4889 for (j = 0; j < I40E_GL_PRIV_FLAGS_STR_LEN; j++) { 4890 const struct i40e_priv_flags *priv_flags; 4891 4892 priv_flags = &i40e_gl_gstrings_priv_flags[j]; 4893 4894 if (flags & BIT(i + j)) 4895 new_flags |= priv_flags->flag; 4896 else 4897 new_flags &= ~(priv_flags->flag); 4898 4899 /* If this is a read-only flag, it can't be changed */ 4900 if (priv_flags->read_only && 4901 ((orig_flags ^ new_flags) & ~BIT(i))) 4902 return -EOPNOTSUPP; 4903 } 4904 4905 flags_complete: 4906 changed_flags = orig_flags ^ new_flags; 4907 4908 is_reset_needed = !!(changed_flags & (I40E_FLAG_VEB_STATS_ENABLED | 4909 I40E_FLAG_LEGACY_RX | I40E_FLAG_SOURCE_PRUNING_DISABLED | 4910 I40E_FLAG_DISABLE_FW_LLDP)); 4911 4912 /* Before we finalize any flag changes, we need to perform some 4913 * checks to ensure that the changes are supported and safe. 4914 */ 4915 4916 /* ATR eviction is not supported on all devices */ 4917 if ((new_flags & I40E_FLAG_HW_ATR_EVICT_ENABLED) && 4918 !(pf->hw_features & I40E_HW_ATR_EVICT_CAPABLE)) 4919 return -EOPNOTSUPP; 4920 4921 /* If the driver detected FW LLDP was disabled on init, this flag could 4922 * be set, however we do not support _changing_ the flag: 4923 * - on XL710 if NPAR is enabled or FW API version < 1.7 4924 * - on X722 with FW API version < 1.6 4925 * There are situations where older FW versions/NPAR enabled PFs could 4926 * disable LLDP, however we _must_ not allow the user to enable/disable 4927 * LLDP with this flag on unsupported FW versions. 4928 */ 4929 if (changed_flags & I40E_FLAG_DISABLE_FW_LLDP) { 4930 if (!(pf->hw.flags & I40E_HW_FLAG_FW_LLDP_STOPPABLE)) { 4931 dev_warn(&pf->pdev->dev, 4932 "Device does not support changing FW LLDP\n"); 4933 return -EOPNOTSUPP; 4934 } 4935 } 4936 4937 if (((changed_flags & I40E_FLAG_RS_FEC) || 4938 (changed_flags & I40E_FLAG_BASE_R_FEC)) && 4939 pf->hw.device_id != I40E_DEV_ID_25G_SFP28 && 4940 pf->hw.device_id != I40E_DEV_ID_25G_B) { 4941 dev_warn(&pf->pdev->dev, 4942 "Device does not support changing FEC configuration\n"); 4943 return -EOPNOTSUPP; 4944 } 4945 4946 /* Process any additional changes needed as a result of flag changes. 4947 * The changed_flags value reflects the list of bits that were 4948 * changed in the code above. 4949 */ 4950 4951 /* Flush current ATR settings if ATR was disabled */ 4952 if ((changed_flags & I40E_FLAG_FD_ATR_ENABLED) && 4953 !(new_flags & I40E_FLAG_FD_ATR_ENABLED)) { 4954 set_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state); 4955 set_bit(__I40E_FD_FLUSH_REQUESTED, pf->state); 4956 } 4957 4958 if (changed_flags & I40E_FLAG_TRUE_PROMISC_SUPPORT) { 4959 u16 sw_flags = 0, valid_flags = 0; 4960 int ret; 4961 4962 if (!(new_flags & I40E_FLAG_TRUE_PROMISC_SUPPORT)) 4963 sw_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC; 4964 valid_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC; 4965 ret = i40e_aq_set_switch_config(&pf->hw, sw_flags, valid_flags, 4966 0, NULL); 4967 if (ret && pf->hw.aq.asq_last_status != I40E_AQ_RC_ESRCH) { 4968 dev_info(&pf->pdev->dev, 4969 "couldn't set switch config bits, err %s aq_err %s\n", 4970 i40e_stat_str(&pf->hw, ret), 4971 i40e_aq_str(&pf->hw, 4972 pf->hw.aq.asq_last_status)); 4973 /* not a fatal problem, just keep going */ 4974 } 4975 } 4976 4977 if ((changed_flags & I40E_FLAG_RS_FEC) || 4978 (changed_flags & I40E_FLAG_BASE_R_FEC)) { 4979 u8 fec_cfg = 0; 4980 4981 if (new_flags & I40E_FLAG_RS_FEC && 4982 new_flags & I40E_FLAG_BASE_R_FEC) { 4983 fec_cfg = I40E_AQ_SET_FEC_AUTO; 4984 } else if (new_flags & I40E_FLAG_RS_FEC) { 4985 fec_cfg = (I40E_AQ_SET_FEC_REQUEST_RS | 4986 I40E_AQ_SET_FEC_ABILITY_RS); 4987 } else if (new_flags & I40E_FLAG_BASE_R_FEC) { 4988 fec_cfg = (I40E_AQ_SET_FEC_REQUEST_KR | 4989 I40E_AQ_SET_FEC_ABILITY_KR); 4990 } 4991 if (i40e_set_fec_cfg(dev, fec_cfg)) 4992 dev_warn(&pf->pdev->dev, "Cannot change FEC config\n"); 4993 } 4994 4995 if ((changed_flags & new_flags & 4996 I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED) && 4997 (new_flags & I40E_FLAG_MFP_ENABLED)) 4998 dev_warn(&pf->pdev->dev, 4999 "Turning on link-down-on-close flag may affect other partitions\n"); 5000 5001 if (changed_flags & I40E_FLAG_DISABLE_FW_LLDP) { 5002 if (new_flags & I40E_FLAG_DISABLE_FW_LLDP) { 5003 struct i40e_dcbx_config *dcbcfg; 5004 5005 i40e_aq_stop_lldp(&pf->hw, true, false, NULL); 5006 i40e_aq_set_dcb_parameters(&pf->hw, true, NULL); 5007 /* reset local_dcbx_config to default */ 5008 dcbcfg = &pf->hw.local_dcbx_config; 5009 dcbcfg->etscfg.willing = 1; 5010 dcbcfg->etscfg.maxtcs = 0; 5011 dcbcfg->etscfg.tcbwtable[0] = 100; 5012 for (i = 1; i < I40E_MAX_TRAFFIC_CLASS; i++) 5013 dcbcfg->etscfg.tcbwtable[i] = 0; 5014 for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) 5015 dcbcfg->etscfg.prioritytable[i] = 0; 5016 dcbcfg->etscfg.tsatable[0] = I40E_IEEE_TSA_ETS; 5017 dcbcfg->pfc.willing = 1; 5018 dcbcfg->pfc.pfccap = I40E_MAX_TRAFFIC_CLASS; 5019 } else { 5020 status = i40e_aq_start_lldp(&pf->hw, false, NULL); 5021 if (status) { 5022 adq_err = pf->hw.aq.asq_last_status; 5023 switch (adq_err) { 5024 case I40E_AQ_RC_EEXIST: 5025 dev_warn(&pf->pdev->dev, 5026 "FW LLDP agent is already running\n"); 5027 is_reset_needed = false; 5028 break; 5029 case I40E_AQ_RC_EPERM: 5030 dev_warn(&pf->pdev->dev, 5031 "Device configuration forbids SW from starting the LLDP agent.\n"); 5032 return -EINVAL; 5033 default: 5034 dev_warn(&pf->pdev->dev, 5035 "Starting FW LLDP agent failed: error: %s, %s\n", 5036 i40e_stat_str(&pf->hw, 5037 status), 5038 i40e_aq_str(&pf->hw, 5039 adq_err)); 5040 return -EINVAL; 5041 } 5042 } 5043 } 5044 } 5045 5046 /* Now that we've checked to ensure that the new flags are valid, load 5047 * them into place. Since we only modify flags either (a) during 5048 * initialization or (b) while holding the RTNL lock, we don't need 5049 * anything fancy here. 5050 */ 5051 pf->flags = new_flags; 5052 5053 /* Issue reset to cause things to take effect, as additional bits 5054 * are added we will need to create a mask of bits requiring reset 5055 */ 5056 if (is_reset_needed) 5057 i40e_do_reset(pf, BIT(__I40E_PF_RESET_REQUESTED), true); 5058 5059 return 0; 5060 } 5061 5062 /** 5063 * i40e_get_module_info - get (Q)SFP+ module type info 5064 * @netdev: network interface device structure 5065 * @modinfo: module EEPROM size and layout information structure 5066 **/ 5067 static int i40e_get_module_info(struct net_device *netdev, 5068 struct ethtool_modinfo *modinfo) 5069 { 5070 struct i40e_netdev_priv *np = netdev_priv(netdev); 5071 struct i40e_vsi *vsi = np->vsi; 5072 struct i40e_pf *pf = vsi->back; 5073 struct i40e_hw *hw = &pf->hw; 5074 u32 sff8472_comp = 0; 5075 u32 sff8472_swap = 0; 5076 u32 sff8636_rev = 0; 5077 i40e_status status; 5078 u32 type = 0; 5079 5080 /* Check if firmware supports reading module EEPROM. */ 5081 if (!(hw->flags & I40E_HW_FLAG_AQ_PHY_ACCESS_CAPABLE)) { 5082 netdev_err(vsi->netdev, "Module EEPROM memory read not supported. Please update the NVM image.\n"); 5083 return -EINVAL; 5084 } 5085 5086 status = i40e_update_link_info(hw); 5087 if (status) 5088 return -EIO; 5089 5090 if (hw->phy.link_info.phy_type == I40E_PHY_TYPE_EMPTY) { 5091 netdev_err(vsi->netdev, "Cannot read module EEPROM memory. No module connected.\n"); 5092 return -EINVAL; 5093 } 5094 5095 type = hw->phy.link_info.module_type[0]; 5096 5097 switch (type) { 5098 case I40E_MODULE_TYPE_SFP: 5099 status = i40e_aq_get_phy_register(hw, 5100 I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE, 5101 I40E_I2C_EEPROM_DEV_ADDR, 5102 I40E_MODULE_SFF_8472_COMP, 5103 &sff8472_comp, NULL); 5104 if (status) 5105 return -EIO; 5106 5107 status = i40e_aq_get_phy_register(hw, 5108 I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE, 5109 I40E_I2C_EEPROM_DEV_ADDR, 5110 I40E_MODULE_SFF_8472_SWAP, 5111 &sff8472_swap, NULL); 5112 if (status) 5113 return -EIO; 5114 5115 /* Check if the module requires address swap to access 5116 * the other EEPROM memory page. 5117 */ 5118 if (sff8472_swap & I40E_MODULE_SFF_ADDR_MODE) { 5119 netdev_warn(vsi->netdev, "Module address swap to access page 0xA2 is not supported.\n"); 5120 modinfo->type = ETH_MODULE_SFF_8079; 5121 modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN; 5122 } else if (sff8472_comp == 0x00) { 5123 /* Module is not SFF-8472 compliant */ 5124 modinfo->type = ETH_MODULE_SFF_8079; 5125 modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN; 5126 } else { 5127 modinfo->type = ETH_MODULE_SFF_8472; 5128 modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN; 5129 } 5130 break; 5131 case I40E_MODULE_TYPE_QSFP_PLUS: 5132 /* Read from memory page 0. */ 5133 status = i40e_aq_get_phy_register(hw, 5134 I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE, 5135 0, 5136 I40E_MODULE_REVISION_ADDR, 5137 &sff8636_rev, NULL); 5138 if (status) 5139 return -EIO; 5140 /* Determine revision compliance byte */ 5141 if (sff8636_rev > 0x02) { 5142 /* Module is SFF-8636 compliant */ 5143 modinfo->type = ETH_MODULE_SFF_8636; 5144 modinfo->eeprom_len = I40E_MODULE_QSFP_MAX_LEN; 5145 } else { 5146 modinfo->type = ETH_MODULE_SFF_8436; 5147 modinfo->eeprom_len = I40E_MODULE_QSFP_MAX_LEN; 5148 } 5149 break; 5150 case I40E_MODULE_TYPE_QSFP28: 5151 modinfo->type = ETH_MODULE_SFF_8636; 5152 modinfo->eeprom_len = I40E_MODULE_QSFP_MAX_LEN; 5153 break; 5154 default: 5155 netdev_err(vsi->netdev, "Module type unrecognized\n"); 5156 return -EINVAL; 5157 } 5158 return 0; 5159 } 5160 5161 /** 5162 * i40e_get_module_eeprom - fills buffer with (Q)SFP+ module memory contents 5163 * @netdev: network interface device structure 5164 * @ee: EEPROM dump request structure 5165 * @data: buffer to be filled with EEPROM contents 5166 **/ 5167 static int i40e_get_module_eeprom(struct net_device *netdev, 5168 struct ethtool_eeprom *ee, 5169 u8 *data) 5170 { 5171 struct i40e_netdev_priv *np = netdev_priv(netdev); 5172 struct i40e_vsi *vsi = np->vsi; 5173 struct i40e_pf *pf = vsi->back; 5174 struct i40e_hw *hw = &pf->hw; 5175 bool is_sfp = false; 5176 i40e_status status; 5177 u32 value = 0; 5178 int i; 5179 5180 if (!ee || !ee->len || !data) 5181 return -EINVAL; 5182 5183 if (hw->phy.link_info.module_type[0] == I40E_MODULE_TYPE_SFP) 5184 is_sfp = true; 5185 5186 for (i = 0; i < ee->len; i++) { 5187 u32 offset = i + ee->offset; 5188 u32 addr = is_sfp ? I40E_I2C_EEPROM_DEV_ADDR : 0; 5189 5190 /* Check if we need to access the other memory page */ 5191 if (is_sfp) { 5192 if (offset >= ETH_MODULE_SFF_8079_LEN) { 5193 offset -= ETH_MODULE_SFF_8079_LEN; 5194 addr = I40E_I2C_EEPROM_DEV_ADDR2; 5195 } 5196 } else { 5197 while (offset >= ETH_MODULE_SFF_8436_LEN) { 5198 /* Compute memory page number and offset. */ 5199 offset -= ETH_MODULE_SFF_8436_LEN / 2; 5200 addr++; 5201 } 5202 } 5203 5204 status = i40e_aq_get_phy_register(hw, 5205 I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE, 5206 addr, offset, &value, NULL); 5207 if (status) 5208 return -EIO; 5209 data[i] = value; 5210 } 5211 return 0; 5212 } 5213 5214 static int i40e_get_eee(struct net_device *netdev, struct ethtool_eee *edata) 5215 { 5216 return -EOPNOTSUPP; 5217 } 5218 5219 static int i40e_set_eee(struct net_device *netdev, struct ethtool_eee *edata) 5220 { 5221 return -EOPNOTSUPP; 5222 } 5223 5224 static const struct ethtool_ops i40e_ethtool_recovery_mode_ops = { 5225 .set_eeprom = i40e_set_eeprom, 5226 .get_eeprom_len = i40e_get_eeprom_len, 5227 .get_eeprom = i40e_get_eeprom, 5228 }; 5229 5230 static const struct ethtool_ops i40e_ethtool_ops = { 5231 .get_drvinfo = i40e_get_drvinfo, 5232 .get_regs_len = i40e_get_regs_len, 5233 .get_regs = i40e_get_regs, 5234 .nway_reset = i40e_nway_reset, 5235 .get_link = ethtool_op_get_link, 5236 .get_wol = i40e_get_wol, 5237 .set_wol = i40e_set_wol, 5238 .set_eeprom = i40e_set_eeprom, 5239 .get_eeprom_len = i40e_get_eeprom_len, 5240 .get_eeprom = i40e_get_eeprom, 5241 .get_ringparam = i40e_get_ringparam, 5242 .set_ringparam = i40e_set_ringparam, 5243 .get_pauseparam = i40e_get_pauseparam, 5244 .set_pauseparam = i40e_set_pauseparam, 5245 .get_msglevel = i40e_get_msglevel, 5246 .set_msglevel = i40e_set_msglevel, 5247 .get_rxnfc = i40e_get_rxnfc, 5248 .set_rxnfc = i40e_set_rxnfc, 5249 .self_test = i40e_diag_test, 5250 .get_strings = i40e_get_strings, 5251 .get_eee = i40e_get_eee, 5252 .set_eee = i40e_set_eee, 5253 .set_phys_id = i40e_set_phys_id, 5254 .get_sset_count = i40e_get_sset_count, 5255 .get_ethtool_stats = i40e_get_ethtool_stats, 5256 .get_coalesce = i40e_get_coalesce, 5257 .set_coalesce = i40e_set_coalesce, 5258 .get_rxfh_key_size = i40e_get_rxfh_key_size, 5259 .get_rxfh_indir_size = i40e_get_rxfh_indir_size, 5260 .get_rxfh = i40e_get_rxfh, 5261 .set_rxfh = i40e_set_rxfh, 5262 .get_channels = i40e_get_channels, 5263 .set_channels = i40e_set_channels, 5264 .get_module_info = i40e_get_module_info, 5265 .get_module_eeprom = i40e_get_module_eeprom, 5266 .get_ts_info = i40e_get_ts_info, 5267 .get_priv_flags = i40e_get_priv_flags, 5268 .set_priv_flags = i40e_set_priv_flags, 5269 .get_per_queue_coalesce = i40e_get_per_queue_coalesce, 5270 .set_per_queue_coalesce = i40e_set_per_queue_coalesce, 5271 .get_link_ksettings = i40e_get_link_ksettings, 5272 .set_link_ksettings = i40e_set_link_ksettings, 5273 .get_fecparam = i40e_get_fec_param, 5274 .set_fecparam = i40e_set_fec_param, 5275 .flash_device = i40e_ddp_flash, 5276 }; 5277 5278 void i40e_set_ethtool_ops(struct net_device *netdev) 5279 { 5280 struct i40e_netdev_priv *np = netdev_priv(netdev); 5281 struct i40e_pf *pf = np->vsi->back; 5282 5283 if (!test_bit(__I40E_RECOVERY_MODE, pf->state)) 5284 netdev->ethtool_ops = &i40e_ethtool_ops; 5285 else 5286 netdev->ethtool_ops = &i40e_ethtool_recovery_mode_ops; 5287 } 5288