1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright(c) 2013 - 2018 Intel Corporation. */ 3 4 /* ethtool support for i40e */ 5 6 #include "i40e.h" 7 #include "i40e_diag.h" 8 #include "i40e_txrx_common.h" 9 10 /* ethtool statistics helpers */ 11 12 /** 13 * struct i40e_stats - definition for an ethtool statistic 14 * @stat_string: statistic name to display in ethtool -S output 15 * @sizeof_stat: the sizeof() the stat, must be no greater than sizeof(u64) 16 * @stat_offset: offsetof() the stat from a base pointer 17 * 18 * This structure defines a statistic to be added to the ethtool stats buffer. 19 * It defines a statistic as offset from a common base pointer. Stats should 20 * be defined in constant arrays using the I40E_STAT macro, with every element 21 * of the array using the same _type for calculating the sizeof_stat and 22 * stat_offset. 23 * 24 * The @sizeof_stat is expected to be sizeof(u8), sizeof(u16), sizeof(u32) or 25 * sizeof(u64). Other sizes are not expected and will produce a WARN_ONCE from 26 * the i40e_add_ethtool_stat() helper function. 27 * 28 * The @stat_string is interpreted as a format string, allowing formatted 29 * values to be inserted while looping over multiple structures for a given 30 * statistics array. Thus, every statistic string in an array should have the 31 * same type and number of format specifiers, to be formatted by variadic 32 * arguments to the i40e_add_stat_string() helper function. 33 **/ 34 struct i40e_stats { 35 char stat_string[ETH_GSTRING_LEN]; 36 int sizeof_stat; 37 int stat_offset; 38 }; 39 40 /* Helper macro to define an i40e_stat structure with proper size and type. 41 * Use this when defining constant statistics arrays. Note that @_type expects 42 * only a type name and is used multiple times. 43 */ 44 #define I40E_STAT(_type, _name, _stat) { \ 45 .stat_string = _name, \ 46 .sizeof_stat = sizeof_field(_type, _stat), \ 47 .stat_offset = offsetof(_type, _stat) \ 48 } 49 50 /* Helper macro for defining some statistics directly copied from the netdev 51 * stats structure. 52 */ 53 #define I40E_NETDEV_STAT(_net_stat) \ 54 I40E_STAT(struct rtnl_link_stats64, #_net_stat, _net_stat) 55 56 /* Helper macro for defining some statistics related to queues */ 57 #define I40E_QUEUE_STAT(_name, _stat) \ 58 I40E_STAT(struct i40e_ring, _name, _stat) 59 60 /* Stats associated with a Tx or Rx ring */ 61 static const struct i40e_stats i40e_gstrings_queue_stats[] = { 62 I40E_QUEUE_STAT("%s-%u.packets", stats.packets), 63 I40E_QUEUE_STAT("%s-%u.bytes", stats.bytes), 64 }; 65 66 /** 67 * i40e_add_one_ethtool_stat - copy the stat into the supplied buffer 68 * @data: location to store the stat value 69 * @pointer: basis for where to copy from 70 * @stat: the stat definition 71 * 72 * Copies the stat data defined by the pointer and stat structure pair into 73 * the memory supplied as data. Used to implement i40e_add_ethtool_stats and 74 * i40e_add_queue_stats. If the pointer is null, data will be zero'd. 75 */ 76 static void 77 i40e_add_one_ethtool_stat(u64 *data, void *pointer, 78 const struct i40e_stats *stat) 79 { 80 char *p; 81 82 if (!pointer) { 83 /* ensure that the ethtool data buffer is zero'd for any stats 84 * which don't have a valid pointer. 85 */ 86 *data = 0; 87 return; 88 } 89 90 p = (char *)pointer + stat->stat_offset; 91 switch (stat->sizeof_stat) { 92 case sizeof(u64): 93 *data = *((u64 *)p); 94 break; 95 case sizeof(u32): 96 *data = *((u32 *)p); 97 break; 98 case sizeof(u16): 99 *data = *((u16 *)p); 100 break; 101 case sizeof(u8): 102 *data = *((u8 *)p); 103 break; 104 default: 105 WARN_ONCE(1, "unexpected stat size for %s", 106 stat->stat_string); 107 *data = 0; 108 } 109 } 110 111 /** 112 * __i40e_add_ethtool_stats - copy stats into the ethtool supplied buffer 113 * @data: ethtool stats buffer 114 * @pointer: location to copy stats from 115 * @stats: array of stats to copy 116 * @size: the size of the stats definition 117 * 118 * Copy the stats defined by the stats array using the pointer as a base into 119 * the data buffer supplied by ethtool. Updates the data pointer to point to 120 * the next empty location for successive calls to __i40e_add_ethtool_stats. 121 * If pointer is null, set the data values to zero and update the pointer to 122 * skip these stats. 123 **/ 124 static void 125 __i40e_add_ethtool_stats(u64 **data, void *pointer, 126 const struct i40e_stats stats[], 127 const unsigned int size) 128 { 129 unsigned int i; 130 131 for (i = 0; i < size; i++) 132 i40e_add_one_ethtool_stat((*data)++, pointer, &stats[i]); 133 } 134 135 /** 136 * i40e_add_ethtool_stats - copy stats into ethtool supplied buffer 137 * @data: ethtool stats buffer 138 * @pointer: location where stats are stored 139 * @stats: static const array of stat definitions 140 * 141 * Macro to ease the use of __i40e_add_ethtool_stats by taking a static 142 * constant stats array and passing the ARRAY_SIZE(). This avoids typos by 143 * ensuring that we pass the size associated with the given stats array. 144 * 145 * The parameter @stats is evaluated twice, so parameters with side effects 146 * should be avoided. 147 **/ 148 #define i40e_add_ethtool_stats(data, pointer, stats) \ 149 __i40e_add_ethtool_stats(data, pointer, stats, ARRAY_SIZE(stats)) 150 151 /** 152 * i40e_add_queue_stats - copy queue statistics into supplied buffer 153 * @data: ethtool stats buffer 154 * @ring: the ring to copy 155 * 156 * Queue statistics must be copied while protected by 157 * u64_stats_fetch_begin_irq, so we can't directly use i40e_add_ethtool_stats. 158 * Assumes that queue stats are defined in i40e_gstrings_queue_stats. If the 159 * ring pointer is null, zero out the queue stat values and update the data 160 * pointer. Otherwise safely copy the stats from the ring into the supplied 161 * buffer and update the data pointer when finished. 162 * 163 * This function expects to be called while under rcu_read_lock(). 164 **/ 165 static void 166 i40e_add_queue_stats(u64 **data, struct i40e_ring *ring) 167 { 168 const unsigned int size = ARRAY_SIZE(i40e_gstrings_queue_stats); 169 const struct i40e_stats *stats = i40e_gstrings_queue_stats; 170 unsigned int start; 171 unsigned int i; 172 173 /* To avoid invalid statistics values, ensure that we keep retrying 174 * the copy until we get a consistent value according to 175 * u64_stats_fetch_retry_irq. But first, make sure our ring is 176 * non-null before attempting to access its syncp. 177 */ 178 do { 179 start = !ring ? 0 : u64_stats_fetch_begin_irq(&ring->syncp); 180 for (i = 0; i < size; i++) { 181 i40e_add_one_ethtool_stat(&(*data)[i], ring, 182 &stats[i]); 183 } 184 } while (ring && u64_stats_fetch_retry_irq(&ring->syncp, start)); 185 186 /* Once we successfully copy the stats in, update the data pointer */ 187 *data += size; 188 } 189 190 /** 191 * __i40e_add_stat_strings - copy stat strings into ethtool buffer 192 * @p: ethtool supplied buffer 193 * @stats: stat definitions array 194 * @size: size of the stats array 195 * 196 * Format and copy the strings described by stats into the buffer pointed at 197 * by p. 198 **/ 199 static void __i40e_add_stat_strings(u8 **p, const struct i40e_stats stats[], 200 const unsigned int size, ...) 201 { 202 unsigned int i; 203 204 for (i = 0; i < size; i++) { 205 va_list args; 206 207 va_start(args, size); 208 vsnprintf(*p, ETH_GSTRING_LEN, stats[i].stat_string, args); 209 *p += ETH_GSTRING_LEN; 210 va_end(args); 211 } 212 } 213 214 /** 215 * i40e_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_VEB_TC_STAT(_name, _stat) \ 236 I40E_STAT(struct i40e_cp_veb_tc_stats, _name, _stat) 237 #define I40E_PFC_STAT(_name, _stat) \ 238 I40E_STAT(struct i40e_pfc_stats, _name, _stat) 239 #define I40E_QUEUE_STAT(_name, _stat) \ 240 I40E_STAT(struct i40e_ring, _name, _stat) 241 242 static const struct i40e_stats i40e_gstrings_net_stats[] = { 243 I40E_NETDEV_STAT(rx_packets), 244 I40E_NETDEV_STAT(tx_packets), 245 I40E_NETDEV_STAT(rx_bytes), 246 I40E_NETDEV_STAT(tx_bytes), 247 I40E_NETDEV_STAT(rx_errors), 248 I40E_NETDEV_STAT(tx_errors), 249 I40E_NETDEV_STAT(rx_dropped), 250 I40E_NETDEV_STAT(tx_dropped), 251 I40E_NETDEV_STAT(collisions), 252 I40E_NETDEV_STAT(rx_length_errors), 253 I40E_NETDEV_STAT(rx_crc_errors), 254 }; 255 256 static const struct i40e_stats i40e_gstrings_veb_stats[] = { 257 I40E_VEB_STAT("veb.rx_bytes", stats.rx_bytes), 258 I40E_VEB_STAT("veb.tx_bytes", stats.tx_bytes), 259 I40E_VEB_STAT("veb.rx_unicast", stats.rx_unicast), 260 I40E_VEB_STAT("veb.tx_unicast", stats.tx_unicast), 261 I40E_VEB_STAT("veb.rx_multicast", stats.rx_multicast), 262 I40E_VEB_STAT("veb.tx_multicast", stats.tx_multicast), 263 I40E_VEB_STAT("veb.rx_broadcast", stats.rx_broadcast), 264 I40E_VEB_STAT("veb.tx_broadcast", stats.tx_broadcast), 265 I40E_VEB_STAT("veb.rx_discards", stats.rx_discards), 266 I40E_VEB_STAT("veb.tx_discards", stats.tx_discards), 267 I40E_VEB_STAT("veb.tx_errors", stats.tx_errors), 268 I40E_VEB_STAT("veb.rx_unknown_protocol", stats.rx_unknown_protocol), 269 }; 270 271 struct i40e_cp_veb_tc_stats { 272 u64 tc_rx_packets; 273 u64 tc_rx_bytes; 274 u64 tc_tx_packets; 275 u64 tc_tx_bytes; 276 }; 277 278 static const struct i40e_stats i40e_gstrings_veb_tc_stats[] = { 279 I40E_VEB_TC_STAT("veb.tc_%u_tx_packets", tc_tx_packets), 280 I40E_VEB_TC_STAT("veb.tc_%u_tx_bytes", tc_tx_bytes), 281 I40E_VEB_TC_STAT("veb.tc_%u_rx_packets", tc_rx_packets), 282 I40E_VEB_TC_STAT("veb.tc_%u_rx_bytes", tc_rx_bytes), 283 }; 284 285 static const struct i40e_stats i40e_gstrings_misc_stats[] = { 286 I40E_VSI_STAT("rx_unicast", eth_stats.rx_unicast), 287 I40E_VSI_STAT("tx_unicast", eth_stats.tx_unicast), 288 I40E_VSI_STAT("rx_multicast", eth_stats.rx_multicast), 289 I40E_VSI_STAT("tx_multicast", eth_stats.tx_multicast), 290 I40E_VSI_STAT("rx_broadcast", eth_stats.rx_broadcast), 291 I40E_VSI_STAT("tx_broadcast", eth_stats.tx_broadcast), 292 I40E_VSI_STAT("rx_unknown_protocol", eth_stats.rx_unknown_protocol), 293 I40E_VSI_STAT("tx_linearize", tx_linearize), 294 I40E_VSI_STAT("tx_force_wb", tx_force_wb), 295 I40E_VSI_STAT("tx_busy", tx_busy), 296 I40E_VSI_STAT("tx_stopped", tx_stopped), 297 I40E_VSI_STAT("rx_alloc_fail", rx_buf_failed), 298 I40E_VSI_STAT("rx_pg_alloc_fail", rx_page_failed), 299 I40E_VSI_STAT("rx_cache_reuse", rx_page_reuse), 300 I40E_VSI_STAT("rx_cache_alloc", rx_page_alloc), 301 I40E_VSI_STAT("rx_cache_waive", rx_page_waive), 302 I40E_VSI_STAT("rx_cache_busy", rx_page_busy), 303 I40E_VSI_STAT("tx_restart", tx_restart), 304 }; 305 306 /* These PF_STATs might look like duplicates of some NETDEV_STATs, 307 * but they are separate. This device supports Virtualization, and 308 * as such might have several netdevs supporting VMDq and FCoE going 309 * through a single port. The NETDEV_STATs are for individual netdevs 310 * seen at the top of the stack, and the PF_STATs are for the physical 311 * function at the bottom of the stack hosting those netdevs. 312 * 313 * The PF_STATs are appended to the netdev stats only when ethtool -S 314 * is queried on the base PF netdev, not on the VMDq or FCoE netdev. 315 */ 316 static const struct i40e_stats i40e_gstrings_stats[] = { 317 I40E_PF_STAT("port.rx_bytes", stats.eth.rx_bytes), 318 I40E_PF_STAT("port.tx_bytes", stats.eth.tx_bytes), 319 I40E_PF_STAT("port.rx_unicast", stats.eth.rx_unicast), 320 I40E_PF_STAT("port.tx_unicast", stats.eth.tx_unicast), 321 I40E_PF_STAT("port.rx_multicast", stats.eth.rx_multicast), 322 I40E_PF_STAT("port.tx_multicast", stats.eth.tx_multicast), 323 I40E_PF_STAT("port.rx_broadcast", stats.eth.rx_broadcast), 324 I40E_PF_STAT("port.tx_broadcast", stats.eth.tx_broadcast), 325 I40E_PF_STAT("port.tx_errors", stats.eth.tx_errors), 326 I40E_PF_STAT("port.rx_dropped", stats.eth.rx_discards), 327 I40E_PF_STAT("port.tx_dropped_link_down", stats.tx_dropped_link_down), 328 I40E_PF_STAT("port.rx_crc_errors", stats.crc_errors), 329 I40E_PF_STAT("port.illegal_bytes", stats.illegal_bytes), 330 I40E_PF_STAT("port.mac_local_faults", stats.mac_local_faults), 331 I40E_PF_STAT("port.mac_remote_faults", stats.mac_remote_faults), 332 I40E_PF_STAT("port.tx_timeout", tx_timeout_count), 333 I40E_PF_STAT("port.rx_csum_bad", hw_csum_rx_error), 334 I40E_PF_STAT("port.rx_length_errors", stats.rx_length_errors), 335 I40E_PF_STAT("port.link_xon_rx", stats.link_xon_rx), 336 I40E_PF_STAT("port.link_xoff_rx", stats.link_xoff_rx), 337 I40E_PF_STAT("port.link_xon_tx", stats.link_xon_tx), 338 I40E_PF_STAT("port.link_xoff_tx", stats.link_xoff_tx), 339 I40E_PF_STAT("port.rx_size_64", stats.rx_size_64), 340 I40E_PF_STAT("port.rx_size_127", stats.rx_size_127), 341 I40E_PF_STAT("port.rx_size_255", stats.rx_size_255), 342 I40E_PF_STAT("port.rx_size_511", stats.rx_size_511), 343 I40E_PF_STAT("port.rx_size_1023", stats.rx_size_1023), 344 I40E_PF_STAT("port.rx_size_1522", stats.rx_size_1522), 345 I40E_PF_STAT("port.rx_size_big", stats.rx_size_big), 346 I40E_PF_STAT("port.tx_size_64", stats.tx_size_64), 347 I40E_PF_STAT("port.tx_size_127", stats.tx_size_127), 348 I40E_PF_STAT("port.tx_size_255", stats.tx_size_255), 349 I40E_PF_STAT("port.tx_size_511", stats.tx_size_511), 350 I40E_PF_STAT("port.tx_size_1023", stats.tx_size_1023), 351 I40E_PF_STAT("port.tx_size_1522", stats.tx_size_1522), 352 I40E_PF_STAT("port.tx_size_big", stats.tx_size_big), 353 I40E_PF_STAT("port.rx_undersize", stats.rx_undersize), 354 I40E_PF_STAT("port.rx_fragments", stats.rx_fragments), 355 I40E_PF_STAT("port.rx_oversize", stats.rx_oversize), 356 I40E_PF_STAT("port.rx_jabber", stats.rx_jabber), 357 I40E_PF_STAT("port.VF_admin_queue_requests", vf_aq_requests), 358 I40E_PF_STAT("port.arq_overflows", arq_overflows), 359 I40E_PF_STAT("port.tx_hwtstamp_timeouts", tx_hwtstamp_timeouts), 360 I40E_PF_STAT("port.rx_hwtstamp_cleared", rx_hwtstamp_cleared), 361 I40E_PF_STAT("port.tx_hwtstamp_skipped", tx_hwtstamp_skipped), 362 I40E_PF_STAT("port.fdir_flush_cnt", fd_flush_cnt), 363 I40E_PF_STAT("port.fdir_atr_match", stats.fd_atr_match), 364 I40E_PF_STAT("port.fdir_atr_tunnel_match", stats.fd_atr_tunnel_match), 365 I40E_PF_STAT("port.fdir_atr_status", stats.fd_atr_status), 366 I40E_PF_STAT("port.fdir_sb_match", stats.fd_sb_match), 367 I40E_PF_STAT("port.fdir_sb_status", stats.fd_sb_status), 368 369 /* LPI stats */ 370 I40E_PF_STAT("port.tx_lpi_status", stats.tx_lpi_status), 371 I40E_PF_STAT("port.rx_lpi_status", stats.rx_lpi_status), 372 I40E_PF_STAT("port.tx_lpi_count", stats.tx_lpi_count), 373 I40E_PF_STAT("port.rx_lpi_count", stats.rx_lpi_count), 374 }; 375 376 struct i40e_pfc_stats { 377 u64 priority_xon_rx; 378 u64 priority_xoff_rx; 379 u64 priority_xon_tx; 380 u64 priority_xoff_tx; 381 u64 priority_xon_2_xoff; 382 }; 383 384 static const struct i40e_stats i40e_gstrings_pfc_stats[] = { 385 I40E_PFC_STAT("port.tx_priority_%u_xon_tx", priority_xon_tx), 386 I40E_PFC_STAT("port.tx_priority_%u_xoff_tx", priority_xoff_tx), 387 I40E_PFC_STAT("port.rx_priority_%u_xon_rx", priority_xon_rx), 388 I40E_PFC_STAT("port.rx_priority_%u_xoff_rx", priority_xoff_rx), 389 I40E_PFC_STAT("port.rx_priority_%u_xon_2_xoff", priority_xon_2_xoff), 390 }; 391 392 #define I40E_NETDEV_STATS_LEN ARRAY_SIZE(i40e_gstrings_net_stats) 393 394 #define I40E_MISC_STATS_LEN ARRAY_SIZE(i40e_gstrings_misc_stats) 395 396 #define I40E_VSI_STATS_LEN (I40E_NETDEV_STATS_LEN + I40E_MISC_STATS_LEN) 397 398 #define I40E_PFC_STATS_LEN (ARRAY_SIZE(i40e_gstrings_pfc_stats) * \ 399 I40E_MAX_USER_PRIORITY) 400 401 #define I40E_VEB_STATS_LEN (ARRAY_SIZE(i40e_gstrings_veb_stats) + \ 402 (ARRAY_SIZE(i40e_gstrings_veb_tc_stats) * \ 403 I40E_MAX_TRAFFIC_CLASS)) 404 405 #define I40E_GLOBAL_STATS_LEN ARRAY_SIZE(i40e_gstrings_stats) 406 407 #define I40E_PF_STATS_LEN (I40E_GLOBAL_STATS_LEN + \ 408 I40E_PFC_STATS_LEN + \ 409 I40E_VEB_STATS_LEN + \ 410 I40E_VSI_STATS_LEN) 411 412 /* Length of stats for a single queue */ 413 #define I40E_QUEUE_STATS_LEN ARRAY_SIZE(i40e_gstrings_queue_stats) 414 415 enum i40e_ethtool_test_id { 416 I40E_ETH_TEST_REG = 0, 417 I40E_ETH_TEST_EEPROM, 418 I40E_ETH_TEST_INTR, 419 I40E_ETH_TEST_LINK, 420 }; 421 422 static const char i40e_gstrings_test[][ETH_GSTRING_LEN] = { 423 "Register test (offline)", 424 "Eeprom test (offline)", 425 "Interrupt test (offline)", 426 "Link test (on/offline)" 427 }; 428 429 #define I40E_TEST_LEN (sizeof(i40e_gstrings_test) / ETH_GSTRING_LEN) 430 431 struct i40e_priv_flags { 432 char flag_string[ETH_GSTRING_LEN]; 433 u64 flag; 434 bool read_only; 435 }; 436 437 #define I40E_PRIV_FLAG(_name, _flag, _read_only) { \ 438 .flag_string = _name, \ 439 .flag = _flag, \ 440 .read_only = _read_only, \ 441 } 442 443 static const struct i40e_priv_flags i40e_gstrings_priv_flags[] = { 444 /* NOTE: MFP setting cannot be changed */ 445 I40E_PRIV_FLAG("MFP", I40E_FLAG_MFP_ENABLED, 1), 446 I40E_PRIV_FLAG("total-port-shutdown", 447 I40E_FLAG_TOTAL_PORT_SHUTDOWN_ENABLED, 1), 448 I40E_PRIV_FLAG("LinkPolling", I40E_FLAG_LINK_POLLING_ENABLED, 0), 449 I40E_PRIV_FLAG("flow-director-atr", I40E_FLAG_FD_ATR_ENABLED, 0), 450 I40E_PRIV_FLAG("veb-stats", I40E_FLAG_VEB_STATS_ENABLED, 0), 451 I40E_PRIV_FLAG("hw-atr-eviction", I40E_FLAG_HW_ATR_EVICT_ENABLED, 0), 452 I40E_PRIV_FLAG("link-down-on-close", 453 I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED, 0), 454 I40E_PRIV_FLAG("legacy-rx", I40E_FLAG_LEGACY_RX, 0), 455 I40E_PRIV_FLAG("disable-source-pruning", 456 I40E_FLAG_SOURCE_PRUNING_DISABLED, 0), 457 I40E_PRIV_FLAG("disable-fw-lldp", I40E_FLAG_DISABLE_FW_LLDP, 0), 458 I40E_PRIV_FLAG("rs-fec", I40E_FLAG_RS_FEC, 0), 459 I40E_PRIV_FLAG("base-r-fec", I40E_FLAG_BASE_R_FEC, 0), 460 I40E_PRIV_FLAG("vf-vlan-pruning", 461 I40E_FLAG_VF_VLAN_PRUNING, 0), 462 }; 463 464 #define I40E_PRIV_FLAGS_STR_LEN ARRAY_SIZE(i40e_gstrings_priv_flags) 465 466 /* Private flags with a global effect, restricted to PF 0 */ 467 static const struct i40e_priv_flags i40e_gl_gstrings_priv_flags[] = { 468 I40E_PRIV_FLAG("vf-true-promisc-support", 469 I40E_FLAG_TRUE_PROMISC_SUPPORT, 0), 470 }; 471 472 #define I40E_GL_PRIV_FLAGS_STR_LEN ARRAY_SIZE(i40e_gl_gstrings_priv_flags) 473 474 /** 475 * i40e_partition_setting_complaint - generic complaint for MFP restriction 476 * @pf: the PF struct 477 **/ 478 static void i40e_partition_setting_complaint(struct i40e_pf *pf) 479 { 480 dev_info(&pf->pdev->dev, 481 "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"); 482 } 483 484 /** 485 * i40e_phy_type_to_ethtool - convert the phy_types to ethtool link modes 486 * @pf: PF struct with phy_types 487 * @ks: ethtool link ksettings struct to fill out 488 * 489 **/ 490 static void i40e_phy_type_to_ethtool(struct i40e_pf *pf, 491 struct ethtool_link_ksettings *ks) 492 { 493 struct i40e_link_status *hw_link_info = &pf->hw.phy.link_info; 494 u64 phy_types = pf->hw.phy.phy_types; 495 496 ethtool_link_ksettings_zero_link_mode(ks, supported); 497 ethtool_link_ksettings_zero_link_mode(ks, advertising); 498 499 if (phy_types & I40E_CAP_PHY_TYPE_SGMII) { 500 ethtool_link_ksettings_add_link_mode(ks, supported, 501 1000baseT_Full); 502 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB) 503 ethtool_link_ksettings_add_link_mode(ks, advertising, 504 1000baseT_Full); 505 if (pf->hw_features & I40E_HW_100M_SGMII_CAPABLE) { 506 ethtool_link_ksettings_add_link_mode(ks, supported, 507 100baseT_Full); 508 ethtool_link_ksettings_add_link_mode(ks, advertising, 509 100baseT_Full); 510 } 511 } 512 if (phy_types & I40E_CAP_PHY_TYPE_XAUI || 513 phy_types & I40E_CAP_PHY_TYPE_XFI || 514 phy_types & I40E_CAP_PHY_TYPE_SFI || 515 phy_types & I40E_CAP_PHY_TYPE_10GBASE_SFPP_CU || 516 phy_types & I40E_CAP_PHY_TYPE_10GBASE_AOC) { 517 ethtool_link_ksettings_add_link_mode(ks, supported, 518 10000baseT_Full); 519 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB) 520 ethtool_link_ksettings_add_link_mode(ks, advertising, 521 10000baseT_Full); 522 } 523 if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_T) { 524 ethtool_link_ksettings_add_link_mode(ks, supported, 525 10000baseT_Full); 526 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB) 527 ethtool_link_ksettings_add_link_mode(ks, advertising, 528 10000baseT_Full); 529 } 530 if (phy_types & I40E_CAP_PHY_TYPE_2_5GBASE_T) { 531 ethtool_link_ksettings_add_link_mode(ks, supported, 532 2500baseT_Full); 533 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_2_5GB) 534 ethtool_link_ksettings_add_link_mode(ks, advertising, 535 2500baseT_Full); 536 } 537 if (phy_types & I40E_CAP_PHY_TYPE_5GBASE_T) { 538 ethtool_link_ksettings_add_link_mode(ks, supported, 539 5000baseT_Full); 540 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_5GB) 541 ethtool_link_ksettings_add_link_mode(ks, advertising, 542 5000baseT_Full); 543 } 544 if (phy_types & I40E_CAP_PHY_TYPE_XLAUI || 545 phy_types & I40E_CAP_PHY_TYPE_XLPPI || 546 phy_types & I40E_CAP_PHY_TYPE_40GBASE_AOC) 547 ethtool_link_ksettings_add_link_mode(ks, supported, 548 40000baseCR4_Full); 549 if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4_CU || 550 phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4) { 551 ethtool_link_ksettings_add_link_mode(ks, supported, 552 40000baseCR4_Full); 553 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_40GB) 554 ethtool_link_ksettings_add_link_mode(ks, advertising, 555 40000baseCR4_Full); 556 } 557 if (phy_types & I40E_CAP_PHY_TYPE_100BASE_TX) { 558 ethtool_link_ksettings_add_link_mode(ks, supported, 559 100baseT_Full); 560 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_100MB) 561 ethtool_link_ksettings_add_link_mode(ks, advertising, 562 100baseT_Full); 563 } 564 if (phy_types & I40E_CAP_PHY_TYPE_1000BASE_T) { 565 ethtool_link_ksettings_add_link_mode(ks, supported, 566 1000baseT_Full); 567 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB) 568 ethtool_link_ksettings_add_link_mode(ks, advertising, 569 1000baseT_Full); 570 } 571 if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_SR4) { 572 ethtool_link_ksettings_add_link_mode(ks, supported, 573 40000baseSR4_Full); 574 ethtool_link_ksettings_add_link_mode(ks, advertising, 575 40000baseSR4_Full); 576 } 577 if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_LR4) { 578 ethtool_link_ksettings_add_link_mode(ks, supported, 579 40000baseLR4_Full); 580 ethtool_link_ksettings_add_link_mode(ks, advertising, 581 40000baseLR4_Full); 582 } 583 if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_KR4) { 584 ethtool_link_ksettings_add_link_mode(ks, supported, 585 40000baseKR4_Full); 586 ethtool_link_ksettings_add_link_mode(ks, advertising, 587 40000baseKR4_Full); 588 } 589 if (phy_types & I40E_CAP_PHY_TYPE_20GBASE_KR2) { 590 ethtool_link_ksettings_add_link_mode(ks, supported, 591 20000baseKR2_Full); 592 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_20GB) 593 ethtool_link_ksettings_add_link_mode(ks, advertising, 594 20000baseKR2_Full); 595 } 596 if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_KX4) { 597 ethtool_link_ksettings_add_link_mode(ks, supported, 598 10000baseKX4_Full); 599 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB) 600 ethtool_link_ksettings_add_link_mode(ks, advertising, 601 10000baseKX4_Full); 602 } 603 if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_KR && 604 !(pf->hw_features & I40E_HW_HAVE_CRT_RETIMER)) { 605 ethtool_link_ksettings_add_link_mode(ks, supported, 606 10000baseKR_Full); 607 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB) 608 ethtool_link_ksettings_add_link_mode(ks, advertising, 609 10000baseKR_Full); 610 } 611 if (phy_types & I40E_CAP_PHY_TYPE_1000BASE_KX && 612 !(pf->hw_features & I40E_HW_HAVE_CRT_RETIMER)) { 613 ethtool_link_ksettings_add_link_mode(ks, supported, 614 1000baseKX_Full); 615 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB) 616 ethtool_link_ksettings_add_link_mode(ks, advertising, 617 1000baseKX_Full); 618 } 619 /* need to add 25G PHY types */ 620 if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_KR) { 621 ethtool_link_ksettings_add_link_mode(ks, supported, 622 25000baseKR_Full); 623 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB) 624 ethtool_link_ksettings_add_link_mode(ks, advertising, 625 25000baseKR_Full); 626 } 627 if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_CR) { 628 ethtool_link_ksettings_add_link_mode(ks, supported, 629 25000baseCR_Full); 630 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB) 631 ethtool_link_ksettings_add_link_mode(ks, advertising, 632 25000baseCR_Full); 633 } 634 if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_SR || 635 phy_types & I40E_CAP_PHY_TYPE_25GBASE_LR) { 636 ethtool_link_ksettings_add_link_mode(ks, supported, 637 25000baseSR_Full); 638 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB) 639 ethtool_link_ksettings_add_link_mode(ks, advertising, 640 25000baseSR_Full); 641 } 642 if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_AOC || 643 phy_types & I40E_CAP_PHY_TYPE_25GBASE_ACC) { 644 ethtool_link_ksettings_add_link_mode(ks, supported, 645 25000baseCR_Full); 646 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB) 647 ethtool_link_ksettings_add_link_mode(ks, advertising, 648 25000baseCR_Full); 649 } 650 if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_KR || 651 phy_types & I40E_CAP_PHY_TYPE_25GBASE_CR || 652 phy_types & I40E_CAP_PHY_TYPE_25GBASE_SR || 653 phy_types & I40E_CAP_PHY_TYPE_25GBASE_LR || 654 phy_types & I40E_CAP_PHY_TYPE_25GBASE_AOC || 655 phy_types & I40E_CAP_PHY_TYPE_25GBASE_ACC) { 656 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_NONE); 657 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_RS); 658 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_BASER); 659 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB) { 660 ethtool_link_ksettings_add_link_mode(ks, advertising, 661 FEC_NONE); 662 ethtool_link_ksettings_add_link_mode(ks, advertising, 663 FEC_RS); 664 ethtool_link_ksettings_add_link_mode(ks, advertising, 665 FEC_BASER); 666 } 667 } 668 /* need to add new 10G PHY types */ 669 if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_CR1 || 670 phy_types & I40E_CAP_PHY_TYPE_10GBASE_CR1_CU) { 671 ethtool_link_ksettings_add_link_mode(ks, supported, 672 10000baseCR_Full); 673 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB) 674 ethtool_link_ksettings_add_link_mode(ks, advertising, 675 10000baseCR_Full); 676 } 677 if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_SR) { 678 ethtool_link_ksettings_add_link_mode(ks, supported, 679 10000baseSR_Full); 680 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB) 681 ethtool_link_ksettings_add_link_mode(ks, advertising, 682 10000baseSR_Full); 683 } 684 if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_LR) { 685 ethtool_link_ksettings_add_link_mode(ks, supported, 686 10000baseLR_Full); 687 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB) 688 ethtool_link_ksettings_add_link_mode(ks, advertising, 689 10000baseLR_Full); 690 } 691 if (phy_types & I40E_CAP_PHY_TYPE_1000BASE_SX || 692 phy_types & I40E_CAP_PHY_TYPE_1000BASE_LX || 693 phy_types & I40E_CAP_PHY_TYPE_1000BASE_T_OPTICAL) { 694 ethtool_link_ksettings_add_link_mode(ks, supported, 695 1000baseX_Full); 696 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB) 697 ethtool_link_ksettings_add_link_mode(ks, advertising, 698 1000baseX_Full); 699 } 700 /* Autoneg PHY types */ 701 if (phy_types & I40E_CAP_PHY_TYPE_SGMII || 702 phy_types & I40E_CAP_PHY_TYPE_40GBASE_KR4 || 703 phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4_CU || 704 phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4 || 705 phy_types & I40E_CAP_PHY_TYPE_25GBASE_SR || 706 phy_types & I40E_CAP_PHY_TYPE_25GBASE_LR || 707 phy_types & I40E_CAP_PHY_TYPE_25GBASE_KR || 708 phy_types & I40E_CAP_PHY_TYPE_25GBASE_CR || 709 phy_types & I40E_CAP_PHY_TYPE_20GBASE_KR2 || 710 phy_types & I40E_CAP_PHY_TYPE_10GBASE_SR || 711 phy_types & I40E_CAP_PHY_TYPE_10GBASE_LR || 712 phy_types & I40E_CAP_PHY_TYPE_10GBASE_KX4 || 713 phy_types & I40E_CAP_PHY_TYPE_10GBASE_KR || 714 phy_types & I40E_CAP_PHY_TYPE_10GBASE_CR1_CU || 715 phy_types & I40E_CAP_PHY_TYPE_10GBASE_CR1 || 716 phy_types & I40E_CAP_PHY_TYPE_10GBASE_T || 717 phy_types & I40E_CAP_PHY_TYPE_5GBASE_T || 718 phy_types & I40E_CAP_PHY_TYPE_2_5GBASE_T || 719 phy_types & I40E_CAP_PHY_TYPE_1000BASE_T_OPTICAL || 720 phy_types & I40E_CAP_PHY_TYPE_1000BASE_T || 721 phy_types & I40E_CAP_PHY_TYPE_1000BASE_SX || 722 phy_types & I40E_CAP_PHY_TYPE_1000BASE_LX || 723 phy_types & I40E_CAP_PHY_TYPE_1000BASE_KX || 724 phy_types & I40E_CAP_PHY_TYPE_100BASE_TX) { 725 ethtool_link_ksettings_add_link_mode(ks, supported, 726 Autoneg); 727 ethtool_link_ksettings_add_link_mode(ks, advertising, 728 Autoneg); 729 } 730 } 731 732 /** 733 * i40e_get_settings_link_up_fec - Get the FEC mode encoding from mask 734 * @req_fec_info: mask request FEC info 735 * @ks: ethtool ksettings to fill in 736 **/ 737 static void i40e_get_settings_link_up_fec(u8 req_fec_info, 738 struct ethtool_link_ksettings *ks) 739 { 740 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_NONE); 741 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_RS); 742 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_BASER); 743 744 if ((I40E_AQ_SET_FEC_REQUEST_RS & req_fec_info) && 745 (I40E_AQ_SET_FEC_REQUEST_KR & req_fec_info)) { 746 ethtool_link_ksettings_add_link_mode(ks, advertising, 747 FEC_NONE); 748 ethtool_link_ksettings_add_link_mode(ks, advertising, 749 FEC_BASER); 750 ethtool_link_ksettings_add_link_mode(ks, advertising, FEC_RS); 751 } else if (I40E_AQ_SET_FEC_REQUEST_RS & req_fec_info) { 752 ethtool_link_ksettings_add_link_mode(ks, advertising, FEC_RS); 753 } else if (I40E_AQ_SET_FEC_REQUEST_KR & req_fec_info) { 754 ethtool_link_ksettings_add_link_mode(ks, advertising, 755 FEC_BASER); 756 } else { 757 ethtool_link_ksettings_add_link_mode(ks, advertising, 758 FEC_NONE); 759 } 760 } 761 762 /** 763 * i40e_get_settings_link_up - Get the Link settings for when link is up 764 * @hw: hw structure 765 * @ks: ethtool ksettings to fill in 766 * @netdev: network interface device structure 767 * @pf: pointer to physical function struct 768 **/ 769 static void i40e_get_settings_link_up(struct i40e_hw *hw, 770 struct ethtool_link_ksettings *ks, 771 struct net_device *netdev, 772 struct i40e_pf *pf) 773 { 774 struct i40e_link_status *hw_link_info = &hw->phy.link_info; 775 struct ethtool_link_ksettings cap_ksettings; 776 u32 link_speed = hw_link_info->link_speed; 777 778 /* Initialize supported and advertised settings based on phy settings */ 779 switch (hw_link_info->phy_type) { 780 case I40E_PHY_TYPE_40GBASE_CR4: 781 case I40E_PHY_TYPE_40GBASE_CR4_CU: 782 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg); 783 ethtool_link_ksettings_add_link_mode(ks, supported, 784 40000baseCR4_Full); 785 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg); 786 ethtool_link_ksettings_add_link_mode(ks, advertising, 787 40000baseCR4_Full); 788 break; 789 case I40E_PHY_TYPE_XLAUI: 790 case I40E_PHY_TYPE_XLPPI: 791 case I40E_PHY_TYPE_40GBASE_AOC: 792 ethtool_link_ksettings_add_link_mode(ks, supported, 793 40000baseCR4_Full); 794 ethtool_link_ksettings_add_link_mode(ks, advertising, 795 40000baseCR4_Full); 796 break; 797 case I40E_PHY_TYPE_40GBASE_SR4: 798 ethtool_link_ksettings_add_link_mode(ks, supported, 799 40000baseSR4_Full); 800 ethtool_link_ksettings_add_link_mode(ks, advertising, 801 40000baseSR4_Full); 802 break; 803 case I40E_PHY_TYPE_40GBASE_LR4: 804 ethtool_link_ksettings_add_link_mode(ks, supported, 805 40000baseLR4_Full); 806 ethtool_link_ksettings_add_link_mode(ks, advertising, 807 40000baseLR4_Full); 808 break; 809 case I40E_PHY_TYPE_25GBASE_SR: 810 case I40E_PHY_TYPE_25GBASE_LR: 811 case I40E_PHY_TYPE_10GBASE_SR: 812 case I40E_PHY_TYPE_10GBASE_LR: 813 case I40E_PHY_TYPE_1000BASE_SX: 814 case I40E_PHY_TYPE_1000BASE_LX: 815 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg); 816 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg); 817 ethtool_link_ksettings_add_link_mode(ks, supported, 818 25000baseSR_Full); 819 ethtool_link_ksettings_add_link_mode(ks, advertising, 820 25000baseSR_Full); 821 i40e_get_settings_link_up_fec(hw_link_info->req_fec_info, ks); 822 ethtool_link_ksettings_add_link_mode(ks, supported, 823 10000baseSR_Full); 824 ethtool_link_ksettings_add_link_mode(ks, advertising, 825 10000baseSR_Full); 826 ethtool_link_ksettings_add_link_mode(ks, supported, 827 10000baseLR_Full); 828 ethtool_link_ksettings_add_link_mode(ks, advertising, 829 10000baseLR_Full); 830 ethtool_link_ksettings_add_link_mode(ks, supported, 831 1000baseX_Full); 832 ethtool_link_ksettings_add_link_mode(ks, advertising, 833 1000baseX_Full); 834 ethtool_link_ksettings_add_link_mode(ks, supported, 835 10000baseT_Full); 836 if (hw_link_info->module_type[2] & 837 I40E_MODULE_TYPE_1000BASE_SX || 838 hw_link_info->module_type[2] & 839 I40E_MODULE_TYPE_1000BASE_LX) { 840 ethtool_link_ksettings_add_link_mode(ks, supported, 841 1000baseT_Full); 842 if (hw_link_info->requested_speeds & 843 I40E_LINK_SPEED_1GB) 844 ethtool_link_ksettings_add_link_mode( 845 ks, advertising, 1000baseT_Full); 846 } 847 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB) 848 ethtool_link_ksettings_add_link_mode(ks, advertising, 849 10000baseT_Full); 850 break; 851 case I40E_PHY_TYPE_10GBASE_T: 852 case I40E_PHY_TYPE_5GBASE_T_LINK_STATUS: 853 case I40E_PHY_TYPE_2_5GBASE_T_LINK_STATUS: 854 case I40E_PHY_TYPE_1000BASE_T: 855 case I40E_PHY_TYPE_100BASE_TX: 856 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg); 857 ethtool_link_ksettings_add_link_mode(ks, supported, 858 10000baseT_Full); 859 ethtool_link_ksettings_add_link_mode(ks, supported, 860 5000baseT_Full); 861 ethtool_link_ksettings_add_link_mode(ks, supported, 862 2500baseT_Full); 863 ethtool_link_ksettings_add_link_mode(ks, supported, 864 1000baseT_Full); 865 ethtool_link_ksettings_add_link_mode(ks, supported, 866 100baseT_Full); 867 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg); 868 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB) 869 ethtool_link_ksettings_add_link_mode(ks, advertising, 870 10000baseT_Full); 871 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_5GB) 872 ethtool_link_ksettings_add_link_mode(ks, advertising, 873 5000baseT_Full); 874 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_2_5GB) 875 ethtool_link_ksettings_add_link_mode(ks, advertising, 876 2500baseT_Full); 877 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB) 878 ethtool_link_ksettings_add_link_mode(ks, advertising, 879 1000baseT_Full); 880 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_100MB) 881 ethtool_link_ksettings_add_link_mode(ks, advertising, 882 100baseT_Full); 883 break; 884 case I40E_PHY_TYPE_1000BASE_T_OPTICAL: 885 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg); 886 ethtool_link_ksettings_add_link_mode(ks, supported, 887 1000baseT_Full); 888 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg); 889 ethtool_link_ksettings_add_link_mode(ks, advertising, 890 1000baseT_Full); 891 break; 892 case I40E_PHY_TYPE_10GBASE_CR1_CU: 893 case I40E_PHY_TYPE_10GBASE_CR1: 894 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg); 895 ethtool_link_ksettings_add_link_mode(ks, supported, 896 10000baseT_Full); 897 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg); 898 ethtool_link_ksettings_add_link_mode(ks, advertising, 899 10000baseT_Full); 900 break; 901 case I40E_PHY_TYPE_XAUI: 902 case I40E_PHY_TYPE_XFI: 903 case I40E_PHY_TYPE_SFI: 904 case I40E_PHY_TYPE_10GBASE_SFPP_CU: 905 case I40E_PHY_TYPE_10GBASE_AOC: 906 ethtool_link_ksettings_add_link_mode(ks, supported, 907 10000baseT_Full); 908 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB) 909 ethtool_link_ksettings_add_link_mode(ks, advertising, 910 10000baseT_Full); 911 i40e_get_settings_link_up_fec(hw_link_info->req_fec_info, ks); 912 break; 913 case I40E_PHY_TYPE_SGMII: 914 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg); 915 ethtool_link_ksettings_add_link_mode(ks, supported, 916 1000baseT_Full); 917 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB) 918 ethtool_link_ksettings_add_link_mode(ks, advertising, 919 1000baseT_Full); 920 if (pf->hw_features & I40E_HW_100M_SGMII_CAPABLE) { 921 ethtool_link_ksettings_add_link_mode(ks, supported, 922 100baseT_Full); 923 if (hw_link_info->requested_speeds & 924 I40E_LINK_SPEED_100MB) 925 ethtool_link_ksettings_add_link_mode( 926 ks, advertising, 100baseT_Full); 927 } 928 break; 929 case I40E_PHY_TYPE_40GBASE_KR4: 930 case I40E_PHY_TYPE_25GBASE_KR: 931 case I40E_PHY_TYPE_20GBASE_KR2: 932 case I40E_PHY_TYPE_10GBASE_KR: 933 case I40E_PHY_TYPE_10GBASE_KX4: 934 case I40E_PHY_TYPE_1000BASE_KX: 935 ethtool_link_ksettings_add_link_mode(ks, supported, 936 40000baseKR4_Full); 937 ethtool_link_ksettings_add_link_mode(ks, supported, 938 25000baseKR_Full); 939 ethtool_link_ksettings_add_link_mode(ks, supported, 940 20000baseKR2_Full); 941 ethtool_link_ksettings_add_link_mode(ks, supported, 942 10000baseKR_Full); 943 ethtool_link_ksettings_add_link_mode(ks, supported, 944 10000baseKX4_Full); 945 ethtool_link_ksettings_add_link_mode(ks, supported, 946 1000baseKX_Full); 947 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg); 948 ethtool_link_ksettings_add_link_mode(ks, advertising, 949 40000baseKR4_Full); 950 ethtool_link_ksettings_add_link_mode(ks, advertising, 951 25000baseKR_Full); 952 i40e_get_settings_link_up_fec(hw_link_info->req_fec_info, ks); 953 ethtool_link_ksettings_add_link_mode(ks, advertising, 954 20000baseKR2_Full); 955 ethtool_link_ksettings_add_link_mode(ks, advertising, 956 10000baseKR_Full); 957 ethtool_link_ksettings_add_link_mode(ks, advertising, 958 10000baseKX4_Full); 959 ethtool_link_ksettings_add_link_mode(ks, advertising, 960 1000baseKX_Full); 961 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg); 962 break; 963 case I40E_PHY_TYPE_25GBASE_CR: 964 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg); 965 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg); 966 ethtool_link_ksettings_add_link_mode(ks, supported, 967 25000baseCR_Full); 968 ethtool_link_ksettings_add_link_mode(ks, advertising, 969 25000baseCR_Full); 970 i40e_get_settings_link_up_fec(hw_link_info->req_fec_info, ks); 971 972 break; 973 case I40E_PHY_TYPE_25GBASE_AOC: 974 case I40E_PHY_TYPE_25GBASE_ACC: 975 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg); 976 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg); 977 ethtool_link_ksettings_add_link_mode(ks, supported, 978 25000baseCR_Full); 979 ethtool_link_ksettings_add_link_mode(ks, advertising, 980 25000baseCR_Full); 981 i40e_get_settings_link_up_fec(hw_link_info->req_fec_info, ks); 982 983 ethtool_link_ksettings_add_link_mode(ks, supported, 984 10000baseCR_Full); 985 ethtool_link_ksettings_add_link_mode(ks, advertising, 986 10000baseCR_Full); 987 break; 988 default: 989 /* if we got here and link is up something bad is afoot */ 990 netdev_info(netdev, 991 "WARNING: Link is up but PHY type 0x%x is not recognized, or incorrect cable is in use\n", 992 hw_link_info->phy_type); 993 } 994 995 /* Now that we've worked out everything that could be supported by the 996 * current PHY type, get what is supported by the NVM and intersect 997 * them to get what is truly supported 998 */ 999 memset(&cap_ksettings, 0, sizeof(struct ethtool_link_ksettings)); 1000 i40e_phy_type_to_ethtool(pf, &cap_ksettings); 1001 ethtool_intersect_link_masks(ks, &cap_ksettings); 1002 1003 /* Set speed and duplex */ 1004 switch (link_speed) { 1005 case I40E_LINK_SPEED_40GB: 1006 ks->base.speed = SPEED_40000; 1007 break; 1008 case I40E_LINK_SPEED_25GB: 1009 ks->base.speed = SPEED_25000; 1010 break; 1011 case I40E_LINK_SPEED_20GB: 1012 ks->base.speed = SPEED_20000; 1013 break; 1014 case I40E_LINK_SPEED_10GB: 1015 ks->base.speed = SPEED_10000; 1016 break; 1017 case I40E_LINK_SPEED_5GB: 1018 ks->base.speed = SPEED_5000; 1019 break; 1020 case I40E_LINK_SPEED_2_5GB: 1021 ks->base.speed = SPEED_2500; 1022 break; 1023 case I40E_LINK_SPEED_1GB: 1024 ks->base.speed = SPEED_1000; 1025 break; 1026 case I40E_LINK_SPEED_100MB: 1027 ks->base.speed = SPEED_100; 1028 break; 1029 default: 1030 ks->base.speed = SPEED_UNKNOWN; 1031 break; 1032 } 1033 ks->base.duplex = DUPLEX_FULL; 1034 } 1035 1036 /** 1037 * i40e_get_settings_link_down - Get the Link settings for when link is down 1038 * @hw: hw structure 1039 * @ks: ethtool ksettings to fill in 1040 * @pf: pointer to physical function struct 1041 * 1042 * Reports link settings that can be determined when link is down 1043 **/ 1044 static void i40e_get_settings_link_down(struct i40e_hw *hw, 1045 struct ethtool_link_ksettings *ks, 1046 struct i40e_pf *pf) 1047 { 1048 /* link is down and the driver needs to fall back on 1049 * supported phy types to figure out what info to display 1050 */ 1051 i40e_phy_type_to_ethtool(pf, ks); 1052 1053 /* With no link speed and duplex are unknown */ 1054 ks->base.speed = SPEED_UNKNOWN; 1055 ks->base.duplex = DUPLEX_UNKNOWN; 1056 } 1057 1058 /** 1059 * i40e_get_link_ksettings - Get Link Speed and Duplex settings 1060 * @netdev: network interface device structure 1061 * @ks: ethtool ksettings 1062 * 1063 * Reports speed/duplex settings based on media_type 1064 **/ 1065 static int i40e_get_link_ksettings(struct net_device *netdev, 1066 struct ethtool_link_ksettings *ks) 1067 { 1068 struct i40e_netdev_priv *np = netdev_priv(netdev); 1069 struct i40e_pf *pf = np->vsi->back; 1070 struct i40e_hw *hw = &pf->hw; 1071 struct i40e_link_status *hw_link_info = &hw->phy.link_info; 1072 bool link_up = hw_link_info->link_info & I40E_AQ_LINK_UP; 1073 1074 ethtool_link_ksettings_zero_link_mode(ks, supported); 1075 ethtool_link_ksettings_zero_link_mode(ks, advertising); 1076 1077 if (link_up) 1078 i40e_get_settings_link_up(hw, ks, netdev, pf); 1079 else 1080 i40e_get_settings_link_down(hw, ks, pf); 1081 1082 /* Now set the settings that don't rely on link being up/down */ 1083 /* Set autoneg settings */ 1084 ks->base.autoneg = ((hw_link_info->an_info & I40E_AQ_AN_COMPLETED) ? 1085 AUTONEG_ENABLE : AUTONEG_DISABLE); 1086 1087 /* Set media type settings */ 1088 switch (hw->phy.media_type) { 1089 case I40E_MEDIA_TYPE_BACKPLANE: 1090 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg); 1091 ethtool_link_ksettings_add_link_mode(ks, supported, Backplane); 1092 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg); 1093 ethtool_link_ksettings_add_link_mode(ks, advertising, 1094 Backplane); 1095 ks->base.port = PORT_NONE; 1096 break; 1097 case I40E_MEDIA_TYPE_BASET: 1098 ethtool_link_ksettings_add_link_mode(ks, supported, TP); 1099 ethtool_link_ksettings_add_link_mode(ks, advertising, TP); 1100 ks->base.port = PORT_TP; 1101 break; 1102 case I40E_MEDIA_TYPE_DA: 1103 case I40E_MEDIA_TYPE_CX4: 1104 ethtool_link_ksettings_add_link_mode(ks, supported, FIBRE); 1105 ethtool_link_ksettings_add_link_mode(ks, advertising, FIBRE); 1106 ks->base.port = PORT_DA; 1107 break; 1108 case I40E_MEDIA_TYPE_FIBER: 1109 ethtool_link_ksettings_add_link_mode(ks, supported, FIBRE); 1110 ethtool_link_ksettings_add_link_mode(ks, advertising, FIBRE); 1111 ks->base.port = PORT_FIBRE; 1112 break; 1113 case I40E_MEDIA_TYPE_UNKNOWN: 1114 default: 1115 ks->base.port = PORT_OTHER; 1116 break; 1117 } 1118 1119 /* Set flow control settings */ 1120 ethtool_link_ksettings_add_link_mode(ks, supported, Pause); 1121 ethtool_link_ksettings_add_link_mode(ks, supported, Asym_Pause); 1122 1123 switch (hw->fc.requested_mode) { 1124 case I40E_FC_FULL: 1125 ethtool_link_ksettings_add_link_mode(ks, advertising, Pause); 1126 break; 1127 case I40E_FC_TX_PAUSE: 1128 ethtool_link_ksettings_add_link_mode(ks, advertising, 1129 Asym_Pause); 1130 break; 1131 case I40E_FC_RX_PAUSE: 1132 ethtool_link_ksettings_add_link_mode(ks, advertising, Pause); 1133 ethtool_link_ksettings_add_link_mode(ks, advertising, 1134 Asym_Pause); 1135 break; 1136 default: 1137 ethtool_link_ksettings_del_link_mode(ks, advertising, Pause); 1138 ethtool_link_ksettings_del_link_mode(ks, advertising, 1139 Asym_Pause); 1140 break; 1141 } 1142 1143 return 0; 1144 } 1145 1146 /** 1147 * i40e_set_link_ksettings - Set Speed and Duplex 1148 * @netdev: network interface device structure 1149 * @ks: ethtool ksettings 1150 * 1151 * Set speed/duplex per media_types advertised/forced 1152 **/ 1153 static int i40e_set_link_ksettings(struct net_device *netdev, 1154 const struct ethtool_link_ksettings *ks) 1155 { 1156 struct i40e_netdev_priv *np = netdev_priv(netdev); 1157 struct i40e_aq_get_phy_abilities_resp abilities; 1158 struct ethtool_link_ksettings safe_ks; 1159 struct ethtool_link_ksettings copy_ks; 1160 struct i40e_aq_set_phy_config config; 1161 struct i40e_pf *pf = np->vsi->back; 1162 struct i40e_vsi *vsi = np->vsi; 1163 struct i40e_hw *hw = &pf->hw; 1164 bool autoneg_changed = false; 1165 i40e_status status = 0; 1166 int timeout = 50; 1167 int err = 0; 1168 u8 autoneg; 1169 1170 /* Changing port settings is not supported if this isn't the 1171 * port's controlling PF 1172 */ 1173 if (hw->partition_id != 1) { 1174 i40e_partition_setting_complaint(pf); 1175 return -EOPNOTSUPP; 1176 } 1177 if (vsi != pf->vsi[pf->lan_vsi]) 1178 return -EOPNOTSUPP; 1179 if (hw->phy.media_type != I40E_MEDIA_TYPE_BASET && 1180 hw->phy.media_type != I40E_MEDIA_TYPE_FIBER && 1181 hw->phy.media_type != I40E_MEDIA_TYPE_BACKPLANE && 1182 hw->phy.media_type != I40E_MEDIA_TYPE_DA && 1183 hw->phy.link_info.link_info & I40E_AQ_LINK_UP) 1184 return -EOPNOTSUPP; 1185 if (hw->device_id == I40E_DEV_ID_KX_B || 1186 hw->device_id == I40E_DEV_ID_KX_C || 1187 hw->device_id == I40E_DEV_ID_20G_KR2 || 1188 hw->device_id == I40E_DEV_ID_20G_KR2_A || 1189 hw->device_id == I40E_DEV_ID_25G_B || 1190 hw->device_id == I40E_DEV_ID_KX_X722) { 1191 netdev_info(netdev, "Changing settings is not supported on backplane.\n"); 1192 return -EOPNOTSUPP; 1193 } 1194 1195 /* copy the ksettings to copy_ks to avoid modifying the origin */ 1196 memcpy(©_ks, ks, sizeof(struct ethtool_link_ksettings)); 1197 1198 /* save autoneg out of ksettings */ 1199 autoneg = copy_ks.base.autoneg; 1200 1201 /* get our own copy of the bits to check against */ 1202 memset(&safe_ks, 0, sizeof(struct ethtool_link_ksettings)); 1203 safe_ks.base.cmd = copy_ks.base.cmd; 1204 safe_ks.base.link_mode_masks_nwords = 1205 copy_ks.base.link_mode_masks_nwords; 1206 i40e_get_link_ksettings(netdev, &safe_ks); 1207 1208 /* Get link modes supported by hardware and check against modes 1209 * requested by the user. Return an error if unsupported mode was set. 1210 */ 1211 if (!bitmap_subset(copy_ks.link_modes.advertising, 1212 safe_ks.link_modes.supported, 1213 __ETHTOOL_LINK_MODE_MASK_NBITS)) 1214 return -EINVAL; 1215 1216 /* set autoneg back to what it currently is */ 1217 copy_ks.base.autoneg = safe_ks.base.autoneg; 1218 1219 /* If copy_ks.base and safe_ks.base are not the same now, then they are 1220 * trying to set something that we do not support. 1221 */ 1222 if (memcmp(©_ks.base, &safe_ks.base, 1223 sizeof(struct ethtool_link_settings))) 1224 return -EOPNOTSUPP; 1225 1226 while (test_and_set_bit(__I40E_CONFIG_BUSY, pf->state)) { 1227 timeout--; 1228 if (!timeout) 1229 return -EBUSY; 1230 usleep_range(1000, 2000); 1231 } 1232 1233 /* Get the current phy config */ 1234 status = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, 1235 NULL); 1236 if (status) { 1237 err = -EAGAIN; 1238 goto done; 1239 } 1240 1241 /* Copy abilities to config in case autoneg is not 1242 * set below 1243 */ 1244 memset(&config, 0, sizeof(struct i40e_aq_set_phy_config)); 1245 config.abilities = abilities.abilities; 1246 1247 /* Check autoneg */ 1248 if (autoneg == AUTONEG_ENABLE) { 1249 /* If autoneg was not already enabled */ 1250 if (!(hw->phy.link_info.an_info & I40E_AQ_AN_COMPLETED)) { 1251 /* If autoneg is not supported, return error */ 1252 if (!ethtool_link_ksettings_test_link_mode(&safe_ks, 1253 supported, 1254 Autoneg)) { 1255 netdev_info(netdev, "Autoneg not supported on this phy\n"); 1256 err = -EINVAL; 1257 goto done; 1258 } 1259 /* Autoneg is allowed to change */ 1260 config.abilities = abilities.abilities | 1261 I40E_AQ_PHY_ENABLE_AN; 1262 autoneg_changed = true; 1263 } 1264 } else { 1265 /* If autoneg is currently enabled */ 1266 if (hw->phy.link_info.an_info & I40E_AQ_AN_COMPLETED) { 1267 /* If autoneg is supported 10GBASE_T is the only PHY 1268 * that can disable it, so otherwise return error 1269 */ 1270 if (ethtool_link_ksettings_test_link_mode(&safe_ks, 1271 supported, 1272 Autoneg) && 1273 hw->phy.media_type != I40E_MEDIA_TYPE_BASET) { 1274 netdev_info(netdev, "Autoneg cannot be disabled on this phy\n"); 1275 err = -EINVAL; 1276 goto done; 1277 } 1278 /* Autoneg is allowed to change */ 1279 config.abilities = abilities.abilities & 1280 ~I40E_AQ_PHY_ENABLE_AN; 1281 autoneg_changed = true; 1282 } 1283 } 1284 1285 if (ethtool_link_ksettings_test_link_mode(ks, advertising, 1286 100baseT_Full)) 1287 config.link_speed |= I40E_LINK_SPEED_100MB; 1288 if (ethtool_link_ksettings_test_link_mode(ks, advertising, 1289 1000baseT_Full) || 1290 ethtool_link_ksettings_test_link_mode(ks, advertising, 1291 1000baseX_Full) || 1292 ethtool_link_ksettings_test_link_mode(ks, advertising, 1293 1000baseKX_Full)) 1294 config.link_speed |= I40E_LINK_SPEED_1GB; 1295 if (ethtool_link_ksettings_test_link_mode(ks, advertising, 1296 10000baseT_Full) || 1297 ethtool_link_ksettings_test_link_mode(ks, advertising, 1298 10000baseKX4_Full) || 1299 ethtool_link_ksettings_test_link_mode(ks, advertising, 1300 10000baseKR_Full) || 1301 ethtool_link_ksettings_test_link_mode(ks, advertising, 1302 10000baseCR_Full) || 1303 ethtool_link_ksettings_test_link_mode(ks, advertising, 1304 10000baseSR_Full) || 1305 ethtool_link_ksettings_test_link_mode(ks, advertising, 1306 10000baseLR_Full)) 1307 config.link_speed |= I40E_LINK_SPEED_10GB; 1308 if (ethtool_link_ksettings_test_link_mode(ks, advertising, 1309 2500baseT_Full)) 1310 config.link_speed |= I40E_LINK_SPEED_2_5GB; 1311 if (ethtool_link_ksettings_test_link_mode(ks, advertising, 1312 5000baseT_Full)) 1313 config.link_speed |= I40E_LINK_SPEED_5GB; 1314 if (ethtool_link_ksettings_test_link_mode(ks, advertising, 1315 20000baseKR2_Full)) 1316 config.link_speed |= I40E_LINK_SPEED_20GB; 1317 if (ethtool_link_ksettings_test_link_mode(ks, advertising, 1318 25000baseCR_Full) || 1319 ethtool_link_ksettings_test_link_mode(ks, advertising, 1320 25000baseKR_Full) || 1321 ethtool_link_ksettings_test_link_mode(ks, advertising, 1322 25000baseSR_Full)) 1323 config.link_speed |= I40E_LINK_SPEED_25GB; 1324 if (ethtool_link_ksettings_test_link_mode(ks, advertising, 1325 40000baseKR4_Full) || 1326 ethtool_link_ksettings_test_link_mode(ks, advertising, 1327 40000baseCR4_Full) || 1328 ethtool_link_ksettings_test_link_mode(ks, advertising, 1329 40000baseSR4_Full) || 1330 ethtool_link_ksettings_test_link_mode(ks, advertising, 1331 40000baseLR4_Full)) 1332 config.link_speed |= I40E_LINK_SPEED_40GB; 1333 1334 /* If speed didn't get set, set it to what it currently is. 1335 * This is needed because if advertise is 0 (as it is when autoneg 1336 * is disabled) then speed won't get set. 1337 */ 1338 if (!config.link_speed) 1339 config.link_speed = abilities.link_speed; 1340 if (autoneg_changed || abilities.link_speed != config.link_speed) { 1341 /* copy over the rest of the abilities */ 1342 config.phy_type = abilities.phy_type; 1343 config.phy_type_ext = abilities.phy_type_ext; 1344 config.eee_capability = abilities.eee_capability; 1345 config.eeer = abilities.eeer_val; 1346 config.low_power_ctrl = abilities.d3_lpan; 1347 config.fec_config = abilities.fec_cfg_curr_mod_ext_info & 1348 I40E_AQ_PHY_FEC_CONFIG_MASK; 1349 1350 /* save the requested speeds */ 1351 hw->phy.link_info.requested_speeds = config.link_speed; 1352 /* set link and auto negotiation so changes take effect */ 1353 config.abilities |= I40E_AQ_PHY_ENABLE_ATOMIC_LINK; 1354 /* If link is up put link down */ 1355 if (hw->phy.link_info.link_info & I40E_AQ_LINK_UP) { 1356 /* Tell the OS link is going down, the link will go 1357 * back up when fw says it is ready asynchronously 1358 */ 1359 i40e_print_link_message(vsi, false); 1360 netif_carrier_off(netdev); 1361 netif_tx_stop_all_queues(netdev); 1362 } 1363 1364 /* make the aq call */ 1365 status = i40e_aq_set_phy_config(hw, &config, NULL); 1366 if (status) { 1367 netdev_info(netdev, 1368 "Set phy config failed, err %s aq_err %s\n", 1369 i40e_stat_str(hw, status), 1370 i40e_aq_str(hw, hw->aq.asq_last_status)); 1371 err = -EAGAIN; 1372 goto done; 1373 } 1374 1375 status = i40e_update_link_info(hw); 1376 if (status) 1377 netdev_dbg(netdev, 1378 "Updating link info failed with err %s aq_err %s\n", 1379 i40e_stat_str(hw, status), 1380 i40e_aq_str(hw, hw->aq.asq_last_status)); 1381 1382 } else { 1383 netdev_info(netdev, "Nothing changed, exiting without setting anything.\n"); 1384 } 1385 1386 done: 1387 clear_bit(__I40E_CONFIG_BUSY, pf->state); 1388 1389 return err; 1390 } 1391 1392 static int i40e_set_fec_cfg(struct net_device *netdev, u8 fec_cfg) 1393 { 1394 struct i40e_netdev_priv *np = netdev_priv(netdev); 1395 struct i40e_aq_get_phy_abilities_resp abilities; 1396 struct i40e_pf *pf = np->vsi->back; 1397 struct i40e_hw *hw = &pf->hw; 1398 i40e_status status = 0; 1399 u32 flags = 0; 1400 int err = 0; 1401 1402 flags = READ_ONCE(pf->flags); 1403 i40e_set_fec_in_flags(fec_cfg, &flags); 1404 1405 /* Get the current phy config */ 1406 memset(&abilities, 0, sizeof(abilities)); 1407 status = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, 1408 NULL); 1409 if (status) { 1410 err = -EAGAIN; 1411 goto done; 1412 } 1413 1414 if (abilities.fec_cfg_curr_mod_ext_info != fec_cfg) { 1415 struct i40e_aq_set_phy_config config; 1416 1417 memset(&config, 0, sizeof(config)); 1418 config.phy_type = abilities.phy_type; 1419 config.abilities = abilities.abilities | 1420 I40E_AQ_PHY_ENABLE_ATOMIC_LINK; 1421 config.phy_type_ext = abilities.phy_type_ext; 1422 config.link_speed = abilities.link_speed; 1423 config.eee_capability = abilities.eee_capability; 1424 config.eeer = abilities.eeer_val; 1425 config.low_power_ctrl = abilities.d3_lpan; 1426 config.fec_config = fec_cfg & I40E_AQ_PHY_FEC_CONFIG_MASK; 1427 status = i40e_aq_set_phy_config(hw, &config, NULL); 1428 if (status) { 1429 netdev_info(netdev, 1430 "Set phy config failed, err %s aq_err %s\n", 1431 i40e_stat_str(hw, status), 1432 i40e_aq_str(hw, hw->aq.asq_last_status)); 1433 err = -EAGAIN; 1434 goto done; 1435 } 1436 pf->flags = flags; 1437 status = i40e_update_link_info(hw); 1438 if (status) 1439 /* debug level message only due to relation to the link 1440 * itself rather than to the FEC settings 1441 * (e.g. no physical connection etc.) 1442 */ 1443 netdev_dbg(netdev, 1444 "Updating link info failed with err %s aq_err %s\n", 1445 i40e_stat_str(hw, status), 1446 i40e_aq_str(hw, hw->aq.asq_last_status)); 1447 } 1448 1449 done: 1450 return err; 1451 } 1452 1453 static int i40e_get_fec_param(struct net_device *netdev, 1454 struct ethtool_fecparam *fecparam) 1455 { 1456 struct i40e_netdev_priv *np = netdev_priv(netdev); 1457 struct i40e_aq_get_phy_abilities_resp abilities; 1458 struct i40e_pf *pf = np->vsi->back; 1459 struct i40e_hw *hw = &pf->hw; 1460 i40e_status status = 0; 1461 int err = 0; 1462 u8 fec_cfg; 1463 1464 /* Get the current phy config */ 1465 memset(&abilities, 0, sizeof(abilities)); 1466 status = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, 1467 NULL); 1468 if (status) { 1469 err = -EAGAIN; 1470 goto done; 1471 } 1472 1473 fecparam->fec = 0; 1474 fec_cfg = abilities.fec_cfg_curr_mod_ext_info; 1475 if (fec_cfg & I40E_AQ_SET_FEC_AUTO) 1476 fecparam->fec |= ETHTOOL_FEC_AUTO; 1477 else if (fec_cfg & (I40E_AQ_SET_FEC_REQUEST_RS | 1478 I40E_AQ_SET_FEC_ABILITY_RS)) 1479 fecparam->fec |= ETHTOOL_FEC_RS; 1480 else if (fec_cfg & (I40E_AQ_SET_FEC_REQUEST_KR | 1481 I40E_AQ_SET_FEC_ABILITY_KR)) 1482 fecparam->fec |= ETHTOOL_FEC_BASER; 1483 if (fec_cfg == 0) 1484 fecparam->fec |= ETHTOOL_FEC_OFF; 1485 1486 if (hw->phy.link_info.fec_info & I40E_AQ_CONFIG_FEC_KR_ENA) 1487 fecparam->active_fec = ETHTOOL_FEC_BASER; 1488 else if (hw->phy.link_info.fec_info & I40E_AQ_CONFIG_FEC_RS_ENA) 1489 fecparam->active_fec = ETHTOOL_FEC_RS; 1490 else 1491 fecparam->active_fec = ETHTOOL_FEC_OFF; 1492 done: 1493 return err; 1494 } 1495 1496 static int i40e_set_fec_param(struct net_device *netdev, 1497 struct ethtool_fecparam *fecparam) 1498 { 1499 struct i40e_netdev_priv *np = netdev_priv(netdev); 1500 struct i40e_pf *pf = np->vsi->back; 1501 struct i40e_hw *hw = &pf->hw; 1502 u8 fec_cfg = 0; 1503 1504 if (hw->device_id != I40E_DEV_ID_25G_SFP28 && 1505 hw->device_id != I40E_DEV_ID_25G_B && 1506 hw->device_id != I40E_DEV_ID_KX_X722) 1507 return -EPERM; 1508 1509 if (hw->mac.type == I40E_MAC_X722 && 1510 !(hw->flags & I40E_HW_FLAG_X722_FEC_REQUEST_CAPABLE)) { 1511 netdev_err(netdev, "Setting FEC encoding not supported by firmware. Please update the NVM image.\n"); 1512 return -EOPNOTSUPP; 1513 } 1514 1515 switch (fecparam->fec) { 1516 case ETHTOOL_FEC_AUTO: 1517 fec_cfg = I40E_AQ_SET_FEC_AUTO; 1518 break; 1519 case ETHTOOL_FEC_RS: 1520 fec_cfg = (I40E_AQ_SET_FEC_REQUEST_RS | 1521 I40E_AQ_SET_FEC_ABILITY_RS); 1522 break; 1523 case ETHTOOL_FEC_BASER: 1524 fec_cfg = (I40E_AQ_SET_FEC_REQUEST_KR | 1525 I40E_AQ_SET_FEC_ABILITY_KR); 1526 break; 1527 case ETHTOOL_FEC_OFF: 1528 case ETHTOOL_FEC_NONE: 1529 fec_cfg = 0; 1530 break; 1531 default: 1532 dev_warn(&pf->pdev->dev, "Unsupported FEC mode: %d", 1533 fecparam->fec); 1534 return -EINVAL; 1535 } 1536 1537 return i40e_set_fec_cfg(netdev, fec_cfg); 1538 } 1539 1540 static int i40e_nway_reset(struct net_device *netdev) 1541 { 1542 /* restart autonegotiation */ 1543 struct i40e_netdev_priv *np = netdev_priv(netdev); 1544 struct i40e_pf *pf = np->vsi->back; 1545 struct i40e_hw *hw = &pf->hw; 1546 bool link_up = hw->phy.link_info.link_info & I40E_AQ_LINK_UP; 1547 i40e_status ret = 0; 1548 1549 ret = i40e_aq_set_link_restart_an(hw, link_up, NULL); 1550 if (ret) { 1551 netdev_info(netdev, "link restart failed, err %s aq_err %s\n", 1552 i40e_stat_str(hw, ret), 1553 i40e_aq_str(hw, hw->aq.asq_last_status)); 1554 return -EIO; 1555 } 1556 1557 return 0; 1558 } 1559 1560 /** 1561 * i40e_get_pauseparam - Get Flow Control status 1562 * @netdev: netdevice structure 1563 * @pause: buffer to return pause parameters 1564 * 1565 * Return tx/rx-pause status 1566 **/ 1567 static void i40e_get_pauseparam(struct net_device *netdev, 1568 struct ethtool_pauseparam *pause) 1569 { 1570 struct i40e_netdev_priv *np = netdev_priv(netdev); 1571 struct i40e_pf *pf = np->vsi->back; 1572 struct i40e_hw *hw = &pf->hw; 1573 struct i40e_link_status *hw_link_info = &hw->phy.link_info; 1574 struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config; 1575 1576 pause->autoneg = 1577 ((hw_link_info->an_info & I40E_AQ_AN_COMPLETED) ? 1578 AUTONEG_ENABLE : AUTONEG_DISABLE); 1579 1580 /* PFC enabled so report LFC as off */ 1581 if (dcbx_cfg->pfc.pfcenable) { 1582 pause->rx_pause = 0; 1583 pause->tx_pause = 0; 1584 return; 1585 } 1586 1587 if (hw->fc.current_mode == I40E_FC_RX_PAUSE) { 1588 pause->rx_pause = 1; 1589 } else if (hw->fc.current_mode == I40E_FC_TX_PAUSE) { 1590 pause->tx_pause = 1; 1591 } else if (hw->fc.current_mode == I40E_FC_FULL) { 1592 pause->rx_pause = 1; 1593 pause->tx_pause = 1; 1594 } 1595 } 1596 1597 /** 1598 * i40e_set_pauseparam - Set Flow Control parameter 1599 * @netdev: network interface device structure 1600 * @pause: return tx/rx flow control status 1601 **/ 1602 static int i40e_set_pauseparam(struct net_device *netdev, 1603 struct ethtool_pauseparam *pause) 1604 { 1605 struct i40e_netdev_priv *np = netdev_priv(netdev); 1606 struct i40e_pf *pf = np->vsi->back; 1607 struct i40e_vsi *vsi = np->vsi; 1608 struct i40e_hw *hw = &pf->hw; 1609 struct i40e_link_status *hw_link_info = &hw->phy.link_info; 1610 struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config; 1611 bool link_up = hw_link_info->link_info & I40E_AQ_LINK_UP; 1612 i40e_status status; 1613 u8 aq_failures; 1614 int err = 0; 1615 u32 is_an; 1616 1617 /* Changing the port's flow control is not supported if this isn't the 1618 * port's controlling PF 1619 */ 1620 if (hw->partition_id != 1) { 1621 i40e_partition_setting_complaint(pf); 1622 return -EOPNOTSUPP; 1623 } 1624 1625 if (vsi != pf->vsi[pf->lan_vsi]) 1626 return -EOPNOTSUPP; 1627 1628 is_an = hw_link_info->an_info & I40E_AQ_AN_COMPLETED; 1629 if (pause->autoneg != is_an) { 1630 netdev_info(netdev, "To change autoneg please use: ethtool -s <dev> autoneg <on|off>\n"); 1631 return -EOPNOTSUPP; 1632 } 1633 1634 /* If we have link and don't have autoneg */ 1635 if (!test_bit(__I40E_DOWN, pf->state) && !is_an) { 1636 /* Send message that it might not necessarily work*/ 1637 netdev_info(netdev, "Autoneg did not complete so changing settings may not result in an actual change.\n"); 1638 } 1639 1640 if (dcbx_cfg->pfc.pfcenable) { 1641 netdev_info(netdev, 1642 "Priority flow control enabled. Cannot set link flow control.\n"); 1643 return -EOPNOTSUPP; 1644 } 1645 1646 if (pause->rx_pause && pause->tx_pause) 1647 hw->fc.requested_mode = I40E_FC_FULL; 1648 else if (pause->rx_pause && !pause->tx_pause) 1649 hw->fc.requested_mode = I40E_FC_RX_PAUSE; 1650 else if (!pause->rx_pause && pause->tx_pause) 1651 hw->fc.requested_mode = I40E_FC_TX_PAUSE; 1652 else if (!pause->rx_pause && !pause->tx_pause) 1653 hw->fc.requested_mode = I40E_FC_NONE; 1654 else 1655 return -EINVAL; 1656 1657 /* Tell the OS link is going down, the link will go back up when fw 1658 * says it is ready asynchronously 1659 */ 1660 i40e_print_link_message(vsi, false); 1661 netif_carrier_off(netdev); 1662 netif_tx_stop_all_queues(netdev); 1663 1664 /* Set the fc mode and only restart an if link is up*/ 1665 status = i40e_set_fc(hw, &aq_failures, link_up); 1666 1667 if (aq_failures & I40E_SET_FC_AQ_FAIL_GET) { 1668 netdev_info(netdev, "Set fc failed on the get_phy_capabilities call with err %s aq_err %s\n", 1669 i40e_stat_str(hw, status), 1670 i40e_aq_str(hw, hw->aq.asq_last_status)); 1671 err = -EAGAIN; 1672 } 1673 if (aq_failures & I40E_SET_FC_AQ_FAIL_SET) { 1674 netdev_info(netdev, "Set fc failed on the set_phy_config call with err %s aq_err %s\n", 1675 i40e_stat_str(hw, status), 1676 i40e_aq_str(hw, hw->aq.asq_last_status)); 1677 err = -EAGAIN; 1678 } 1679 if (aq_failures & I40E_SET_FC_AQ_FAIL_UPDATE) { 1680 netdev_info(netdev, "Set fc failed on the get_link_info call with err %s aq_err %s\n", 1681 i40e_stat_str(hw, status), 1682 i40e_aq_str(hw, hw->aq.asq_last_status)); 1683 err = -EAGAIN; 1684 } 1685 1686 if (!test_bit(__I40E_DOWN, pf->state) && is_an) { 1687 /* Give it a little more time to try to come back */ 1688 msleep(75); 1689 if (!test_bit(__I40E_DOWN, pf->state)) 1690 return i40e_nway_reset(netdev); 1691 } 1692 1693 return err; 1694 } 1695 1696 static u32 i40e_get_msglevel(struct net_device *netdev) 1697 { 1698 struct i40e_netdev_priv *np = netdev_priv(netdev); 1699 struct i40e_pf *pf = np->vsi->back; 1700 u32 debug_mask = pf->hw.debug_mask; 1701 1702 if (debug_mask) 1703 netdev_info(netdev, "i40e debug_mask: 0x%08X\n", debug_mask); 1704 1705 return pf->msg_enable; 1706 } 1707 1708 static void i40e_set_msglevel(struct net_device *netdev, u32 data) 1709 { 1710 struct i40e_netdev_priv *np = netdev_priv(netdev); 1711 struct i40e_pf *pf = np->vsi->back; 1712 1713 if (I40E_DEBUG_USER & data) 1714 pf->hw.debug_mask = data; 1715 else 1716 pf->msg_enable = data; 1717 } 1718 1719 static int i40e_get_regs_len(struct net_device *netdev) 1720 { 1721 int reg_count = 0; 1722 int i; 1723 1724 for (i = 0; i40e_reg_list[i].offset != 0; i++) 1725 reg_count += i40e_reg_list[i].elements; 1726 1727 return reg_count * sizeof(u32); 1728 } 1729 1730 static void i40e_get_regs(struct net_device *netdev, struct ethtool_regs *regs, 1731 void *p) 1732 { 1733 struct i40e_netdev_priv *np = netdev_priv(netdev); 1734 struct i40e_pf *pf = np->vsi->back; 1735 struct i40e_hw *hw = &pf->hw; 1736 u32 *reg_buf = p; 1737 unsigned int i, j, ri; 1738 u32 reg; 1739 1740 /* Tell ethtool which driver-version-specific regs output we have. 1741 * 1742 * At some point, if we have ethtool doing special formatting of 1743 * this data, it will rely on this version number to know how to 1744 * interpret things. Hence, this needs to be updated if/when the 1745 * diags register table is changed. 1746 */ 1747 regs->version = 1; 1748 1749 /* loop through the diags reg table for what to print */ 1750 ri = 0; 1751 for (i = 0; i40e_reg_list[i].offset != 0; i++) { 1752 for (j = 0; j < i40e_reg_list[i].elements; j++) { 1753 reg = i40e_reg_list[i].offset 1754 + (j * i40e_reg_list[i].stride); 1755 reg_buf[ri++] = rd32(hw, reg); 1756 } 1757 } 1758 1759 } 1760 1761 static int i40e_get_eeprom(struct net_device *netdev, 1762 struct ethtool_eeprom *eeprom, u8 *bytes) 1763 { 1764 struct i40e_netdev_priv *np = netdev_priv(netdev); 1765 struct i40e_hw *hw = &np->vsi->back->hw; 1766 struct i40e_pf *pf = np->vsi->back; 1767 int ret_val = 0, len, offset; 1768 u8 *eeprom_buff; 1769 u16 i, sectors; 1770 bool last; 1771 u32 magic; 1772 1773 #define I40E_NVM_SECTOR_SIZE 4096 1774 if (eeprom->len == 0) 1775 return -EINVAL; 1776 1777 /* check for NVMUpdate access method */ 1778 magic = hw->vendor_id | (hw->device_id << 16); 1779 if (eeprom->magic && eeprom->magic != magic) { 1780 struct i40e_nvm_access *cmd = (struct i40e_nvm_access *)eeprom; 1781 int errno = 0; 1782 1783 /* make sure it is the right magic for NVMUpdate */ 1784 if ((eeprom->magic >> 16) != hw->device_id) 1785 errno = -EINVAL; 1786 else if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) || 1787 test_bit(__I40E_RESET_INTR_RECEIVED, pf->state)) 1788 errno = -EBUSY; 1789 else 1790 ret_val = i40e_nvmupd_command(hw, cmd, bytes, &errno); 1791 1792 if ((errno || ret_val) && (hw->debug_mask & I40E_DEBUG_NVM)) 1793 dev_info(&pf->pdev->dev, 1794 "NVMUpdate read failed err=%d status=0x%x errno=%d module=%d offset=0x%x size=%d\n", 1795 ret_val, hw->aq.asq_last_status, errno, 1796 (u8)(cmd->config & I40E_NVM_MOD_PNT_MASK), 1797 cmd->offset, cmd->data_size); 1798 1799 return errno; 1800 } 1801 1802 /* normal ethtool get_eeprom support */ 1803 eeprom->magic = hw->vendor_id | (hw->device_id << 16); 1804 1805 eeprom_buff = kzalloc(eeprom->len, GFP_KERNEL); 1806 if (!eeprom_buff) 1807 return -ENOMEM; 1808 1809 ret_val = i40e_acquire_nvm(hw, I40E_RESOURCE_READ); 1810 if (ret_val) { 1811 dev_info(&pf->pdev->dev, 1812 "Failed Acquiring NVM resource for read err=%d status=0x%x\n", 1813 ret_val, hw->aq.asq_last_status); 1814 goto free_buff; 1815 } 1816 1817 sectors = eeprom->len / I40E_NVM_SECTOR_SIZE; 1818 sectors += (eeprom->len % I40E_NVM_SECTOR_SIZE) ? 1 : 0; 1819 len = I40E_NVM_SECTOR_SIZE; 1820 last = false; 1821 for (i = 0; i < sectors; i++) { 1822 if (i == (sectors - 1)) { 1823 len = eeprom->len - (I40E_NVM_SECTOR_SIZE * i); 1824 last = true; 1825 } 1826 offset = eeprom->offset + (I40E_NVM_SECTOR_SIZE * i), 1827 ret_val = i40e_aq_read_nvm(hw, 0x0, offset, len, 1828 (u8 *)eeprom_buff + (I40E_NVM_SECTOR_SIZE * i), 1829 last, NULL); 1830 if (ret_val && hw->aq.asq_last_status == I40E_AQ_RC_EPERM) { 1831 dev_info(&pf->pdev->dev, 1832 "read NVM failed, invalid offset 0x%x\n", 1833 offset); 1834 break; 1835 } else if (ret_val && 1836 hw->aq.asq_last_status == I40E_AQ_RC_EACCES) { 1837 dev_info(&pf->pdev->dev, 1838 "read NVM failed, access, offset 0x%x\n", 1839 offset); 1840 break; 1841 } else if (ret_val) { 1842 dev_info(&pf->pdev->dev, 1843 "read NVM failed offset %d err=%d status=0x%x\n", 1844 offset, ret_val, hw->aq.asq_last_status); 1845 break; 1846 } 1847 } 1848 1849 i40e_release_nvm(hw); 1850 memcpy(bytes, (u8 *)eeprom_buff, eeprom->len); 1851 free_buff: 1852 kfree(eeprom_buff); 1853 return ret_val; 1854 } 1855 1856 static int i40e_get_eeprom_len(struct net_device *netdev) 1857 { 1858 struct i40e_netdev_priv *np = netdev_priv(netdev); 1859 struct i40e_hw *hw = &np->vsi->back->hw; 1860 u32 val; 1861 1862 #define X722_EEPROM_SCOPE_LIMIT 0x5B9FFF 1863 if (hw->mac.type == I40E_MAC_X722) { 1864 val = X722_EEPROM_SCOPE_LIMIT + 1; 1865 return val; 1866 } 1867 val = (rd32(hw, I40E_GLPCI_LBARCTRL) 1868 & I40E_GLPCI_LBARCTRL_FL_SIZE_MASK) 1869 >> I40E_GLPCI_LBARCTRL_FL_SIZE_SHIFT; 1870 /* register returns value in power of 2, 64Kbyte chunks. */ 1871 val = (64 * 1024) * BIT(val); 1872 return val; 1873 } 1874 1875 static int i40e_set_eeprom(struct net_device *netdev, 1876 struct ethtool_eeprom *eeprom, u8 *bytes) 1877 { 1878 struct i40e_netdev_priv *np = netdev_priv(netdev); 1879 struct i40e_hw *hw = &np->vsi->back->hw; 1880 struct i40e_pf *pf = np->vsi->back; 1881 struct i40e_nvm_access *cmd = (struct i40e_nvm_access *)eeprom; 1882 int ret_val = 0; 1883 int errno = 0; 1884 u32 magic; 1885 1886 /* normal ethtool set_eeprom is not supported */ 1887 magic = hw->vendor_id | (hw->device_id << 16); 1888 if (eeprom->magic == magic) 1889 errno = -EOPNOTSUPP; 1890 /* check for NVMUpdate access method */ 1891 else if (!eeprom->magic || (eeprom->magic >> 16) != hw->device_id) 1892 errno = -EINVAL; 1893 else if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) || 1894 test_bit(__I40E_RESET_INTR_RECEIVED, pf->state)) 1895 errno = -EBUSY; 1896 else 1897 ret_val = i40e_nvmupd_command(hw, cmd, bytes, &errno); 1898 1899 if ((errno || ret_val) && (hw->debug_mask & I40E_DEBUG_NVM)) 1900 dev_info(&pf->pdev->dev, 1901 "NVMUpdate write failed err=%d status=0x%x errno=%d module=%d offset=0x%x size=%d\n", 1902 ret_val, hw->aq.asq_last_status, errno, 1903 (u8)(cmd->config & I40E_NVM_MOD_PNT_MASK), 1904 cmd->offset, cmd->data_size); 1905 1906 return errno; 1907 } 1908 1909 static void i40e_get_drvinfo(struct net_device *netdev, 1910 struct ethtool_drvinfo *drvinfo) 1911 { 1912 struct i40e_netdev_priv *np = netdev_priv(netdev); 1913 struct i40e_vsi *vsi = np->vsi; 1914 struct i40e_pf *pf = vsi->back; 1915 1916 strlcpy(drvinfo->driver, i40e_driver_name, sizeof(drvinfo->driver)); 1917 strlcpy(drvinfo->fw_version, i40e_nvm_version_str(&pf->hw), 1918 sizeof(drvinfo->fw_version)); 1919 strlcpy(drvinfo->bus_info, pci_name(pf->pdev), 1920 sizeof(drvinfo->bus_info)); 1921 drvinfo->n_priv_flags = I40E_PRIV_FLAGS_STR_LEN; 1922 if (pf->hw.pf_id == 0) 1923 drvinfo->n_priv_flags += I40E_GL_PRIV_FLAGS_STR_LEN; 1924 } 1925 1926 static void i40e_get_ringparam(struct net_device *netdev, 1927 struct ethtool_ringparam *ring, 1928 struct kernel_ethtool_ringparam *kernel_ring, 1929 struct netlink_ext_ack *extack) 1930 { 1931 struct i40e_netdev_priv *np = netdev_priv(netdev); 1932 struct i40e_pf *pf = np->vsi->back; 1933 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi]; 1934 1935 ring->rx_max_pending = I40E_MAX_NUM_DESCRIPTORS; 1936 ring->tx_max_pending = I40E_MAX_NUM_DESCRIPTORS; 1937 ring->rx_mini_max_pending = 0; 1938 ring->rx_jumbo_max_pending = 0; 1939 ring->rx_pending = vsi->rx_rings[0]->count; 1940 ring->tx_pending = vsi->tx_rings[0]->count; 1941 ring->rx_mini_pending = 0; 1942 ring->rx_jumbo_pending = 0; 1943 } 1944 1945 static bool i40e_active_tx_ring_index(struct i40e_vsi *vsi, u16 index) 1946 { 1947 if (i40e_enabled_xdp_vsi(vsi)) { 1948 return index < vsi->num_queue_pairs || 1949 (index >= vsi->alloc_queue_pairs && 1950 index < vsi->alloc_queue_pairs + vsi->num_queue_pairs); 1951 } 1952 1953 return index < vsi->num_queue_pairs; 1954 } 1955 1956 static int i40e_set_ringparam(struct net_device *netdev, 1957 struct ethtool_ringparam *ring, 1958 struct kernel_ethtool_ringparam *kernel_ring, 1959 struct netlink_ext_ack *extack) 1960 { 1961 struct i40e_ring *tx_rings = NULL, *rx_rings = NULL; 1962 struct i40e_netdev_priv *np = netdev_priv(netdev); 1963 struct i40e_hw *hw = &np->vsi->back->hw; 1964 struct i40e_vsi *vsi = np->vsi; 1965 struct i40e_pf *pf = vsi->back; 1966 u32 new_rx_count, new_tx_count; 1967 u16 tx_alloc_queue_pairs; 1968 int timeout = 50; 1969 int i, err = 0; 1970 1971 if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending)) 1972 return -EINVAL; 1973 1974 if (ring->tx_pending > I40E_MAX_NUM_DESCRIPTORS || 1975 ring->tx_pending < I40E_MIN_NUM_DESCRIPTORS || 1976 ring->rx_pending > I40E_MAX_NUM_DESCRIPTORS || 1977 ring->rx_pending < I40E_MIN_NUM_DESCRIPTORS) { 1978 netdev_info(netdev, 1979 "Descriptors requested (Tx: %d / Rx: %d) out of range [%d-%d]\n", 1980 ring->tx_pending, ring->rx_pending, 1981 I40E_MIN_NUM_DESCRIPTORS, I40E_MAX_NUM_DESCRIPTORS); 1982 return -EINVAL; 1983 } 1984 1985 new_tx_count = ALIGN(ring->tx_pending, I40E_REQ_DESCRIPTOR_MULTIPLE); 1986 new_rx_count = ALIGN(ring->rx_pending, I40E_REQ_DESCRIPTOR_MULTIPLE); 1987 1988 /* if nothing to do return success */ 1989 if ((new_tx_count == vsi->tx_rings[0]->count) && 1990 (new_rx_count == vsi->rx_rings[0]->count)) 1991 return 0; 1992 1993 /* If there is a AF_XDP page pool attached to any of Rx rings, 1994 * disallow changing the number of descriptors -- regardless 1995 * if the netdev is running or not. 1996 */ 1997 if (i40e_xsk_any_rx_ring_enabled(vsi)) 1998 return -EBUSY; 1999 2000 while (test_and_set_bit(__I40E_CONFIG_BUSY, pf->state)) { 2001 timeout--; 2002 if (!timeout) 2003 return -EBUSY; 2004 usleep_range(1000, 2000); 2005 } 2006 2007 if (!netif_running(vsi->netdev)) { 2008 /* simple case - set for the next time the netdev is started */ 2009 for (i = 0; i < vsi->num_queue_pairs; i++) { 2010 vsi->tx_rings[i]->count = new_tx_count; 2011 vsi->rx_rings[i]->count = new_rx_count; 2012 if (i40e_enabled_xdp_vsi(vsi)) 2013 vsi->xdp_rings[i]->count = new_tx_count; 2014 } 2015 vsi->num_tx_desc = new_tx_count; 2016 vsi->num_rx_desc = new_rx_count; 2017 goto done; 2018 } 2019 2020 /* We can't just free everything and then setup again, 2021 * because the ISRs in MSI-X mode get passed pointers 2022 * to the Tx and Rx ring structs. 2023 */ 2024 2025 /* alloc updated Tx and XDP Tx resources */ 2026 tx_alloc_queue_pairs = vsi->alloc_queue_pairs * 2027 (i40e_enabled_xdp_vsi(vsi) ? 2 : 1); 2028 if (new_tx_count != vsi->tx_rings[0]->count) { 2029 netdev_info(netdev, 2030 "Changing Tx descriptor count from %d to %d.\n", 2031 vsi->tx_rings[0]->count, new_tx_count); 2032 tx_rings = kcalloc(tx_alloc_queue_pairs, 2033 sizeof(struct i40e_ring), GFP_KERNEL); 2034 if (!tx_rings) { 2035 err = -ENOMEM; 2036 goto done; 2037 } 2038 2039 for (i = 0; i < tx_alloc_queue_pairs; i++) { 2040 if (!i40e_active_tx_ring_index(vsi, i)) 2041 continue; 2042 2043 tx_rings[i] = *vsi->tx_rings[i]; 2044 tx_rings[i].count = new_tx_count; 2045 /* the desc and bi pointers will be reallocated in the 2046 * setup call 2047 */ 2048 tx_rings[i].desc = NULL; 2049 tx_rings[i].rx_bi = NULL; 2050 err = i40e_setup_tx_descriptors(&tx_rings[i]); 2051 if (err) { 2052 while (i) { 2053 i--; 2054 if (!i40e_active_tx_ring_index(vsi, i)) 2055 continue; 2056 i40e_free_tx_resources(&tx_rings[i]); 2057 } 2058 kfree(tx_rings); 2059 tx_rings = NULL; 2060 2061 goto done; 2062 } 2063 } 2064 } 2065 2066 /* alloc updated Rx resources */ 2067 if (new_rx_count != vsi->rx_rings[0]->count) { 2068 netdev_info(netdev, 2069 "Changing Rx descriptor count from %d to %d\n", 2070 vsi->rx_rings[0]->count, new_rx_count); 2071 rx_rings = kcalloc(vsi->alloc_queue_pairs, 2072 sizeof(struct i40e_ring), GFP_KERNEL); 2073 if (!rx_rings) { 2074 err = -ENOMEM; 2075 goto free_tx; 2076 } 2077 2078 for (i = 0; i < vsi->num_queue_pairs; i++) { 2079 u16 unused; 2080 2081 /* clone ring and setup updated count */ 2082 rx_rings[i] = *vsi->rx_rings[i]; 2083 rx_rings[i].count = new_rx_count; 2084 /* the desc and bi pointers will be reallocated in the 2085 * setup call 2086 */ 2087 rx_rings[i].desc = NULL; 2088 rx_rings[i].rx_bi = NULL; 2089 /* Clear cloned XDP RX-queue info before setup call */ 2090 memset(&rx_rings[i].xdp_rxq, 0, sizeof(rx_rings[i].xdp_rxq)); 2091 /* this is to allow wr32 to have something to write to 2092 * during early allocation of Rx buffers 2093 */ 2094 rx_rings[i].tail = hw->hw_addr + I40E_PRTGEN_STATUS; 2095 err = i40e_setup_rx_descriptors(&rx_rings[i]); 2096 if (err) 2097 goto rx_unwind; 2098 err = i40e_alloc_rx_bi(&rx_rings[i]); 2099 if (err) 2100 goto rx_unwind; 2101 2102 /* now allocate the Rx buffers to make sure the OS 2103 * has enough memory, any failure here means abort 2104 */ 2105 unused = I40E_DESC_UNUSED(&rx_rings[i]); 2106 err = i40e_alloc_rx_buffers(&rx_rings[i], unused); 2107 rx_unwind: 2108 if (err) { 2109 do { 2110 i40e_free_rx_resources(&rx_rings[i]); 2111 } while (i--); 2112 kfree(rx_rings); 2113 rx_rings = NULL; 2114 2115 goto free_tx; 2116 } 2117 } 2118 } 2119 2120 /* Bring interface down, copy in the new ring info, 2121 * then restore the interface 2122 */ 2123 i40e_down(vsi); 2124 2125 if (tx_rings) { 2126 for (i = 0; i < tx_alloc_queue_pairs; i++) { 2127 if (i40e_active_tx_ring_index(vsi, i)) { 2128 i40e_free_tx_resources(vsi->tx_rings[i]); 2129 *vsi->tx_rings[i] = tx_rings[i]; 2130 } 2131 } 2132 kfree(tx_rings); 2133 tx_rings = NULL; 2134 } 2135 2136 if (rx_rings) { 2137 for (i = 0; i < vsi->num_queue_pairs; i++) { 2138 i40e_free_rx_resources(vsi->rx_rings[i]); 2139 /* get the real tail offset */ 2140 rx_rings[i].tail = vsi->rx_rings[i]->tail; 2141 /* this is to fake out the allocation routine 2142 * into thinking it has to realloc everything 2143 * but the recycling logic will let us re-use 2144 * the buffers allocated above 2145 */ 2146 rx_rings[i].next_to_use = 0; 2147 rx_rings[i].next_to_clean = 0; 2148 rx_rings[i].next_to_alloc = 0; 2149 /* do a struct copy */ 2150 *vsi->rx_rings[i] = rx_rings[i]; 2151 } 2152 kfree(rx_rings); 2153 rx_rings = NULL; 2154 } 2155 2156 vsi->num_tx_desc = new_tx_count; 2157 vsi->num_rx_desc = new_rx_count; 2158 i40e_up(vsi); 2159 2160 free_tx: 2161 /* error cleanup if the Rx allocations failed after getting Tx */ 2162 if (tx_rings) { 2163 for (i = 0; i < tx_alloc_queue_pairs; i++) { 2164 if (i40e_active_tx_ring_index(vsi, i)) 2165 i40e_free_tx_resources(vsi->tx_rings[i]); 2166 } 2167 kfree(tx_rings); 2168 tx_rings = NULL; 2169 } 2170 2171 done: 2172 clear_bit(__I40E_CONFIG_BUSY, pf->state); 2173 2174 return err; 2175 } 2176 2177 /** 2178 * i40e_get_stats_count - return the stats count for a device 2179 * @netdev: the netdev to return the count for 2180 * 2181 * Returns the total number of statistics for this netdev. Note that even 2182 * though this is a function, it is required that the count for a specific 2183 * netdev must never change. Basing the count on static values such as the 2184 * maximum number of queues or the device type is ok. However, the API for 2185 * obtaining stats is *not* safe against changes based on non-static 2186 * values such as the *current* number of queues, or runtime flags. 2187 * 2188 * If a statistic is not always enabled, return it as part of the count 2189 * anyways, always return its string, and report its value as zero. 2190 **/ 2191 static int i40e_get_stats_count(struct net_device *netdev) 2192 { 2193 struct i40e_netdev_priv *np = netdev_priv(netdev); 2194 struct i40e_vsi *vsi = np->vsi; 2195 struct i40e_pf *pf = vsi->back; 2196 int stats_len; 2197 2198 if (vsi == pf->vsi[pf->lan_vsi] && pf->hw.partition_id == 1) 2199 stats_len = I40E_PF_STATS_LEN; 2200 else 2201 stats_len = I40E_VSI_STATS_LEN; 2202 2203 /* The number of stats reported for a given net_device must remain 2204 * constant throughout the life of that device. 2205 * 2206 * This is because the API for obtaining the size, strings, and stats 2207 * is spread out over three separate ethtool ioctls. There is no safe 2208 * way to lock the number of stats across these calls, so we must 2209 * assume that they will never change. 2210 * 2211 * Due to this, we report the maximum number of queues, even if not 2212 * every queue is currently configured. Since we always allocate 2213 * queues in pairs, we'll just use netdev->num_tx_queues * 2. This 2214 * works because the num_tx_queues is set at device creation and never 2215 * changes. 2216 */ 2217 stats_len += I40E_QUEUE_STATS_LEN * 2 * netdev->num_tx_queues; 2218 2219 return stats_len; 2220 } 2221 2222 static int i40e_get_sset_count(struct net_device *netdev, int sset) 2223 { 2224 struct i40e_netdev_priv *np = netdev_priv(netdev); 2225 struct i40e_vsi *vsi = np->vsi; 2226 struct i40e_pf *pf = vsi->back; 2227 2228 switch (sset) { 2229 case ETH_SS_TEST: 2230 return I40E_TEST_LEN; 2231 case ETH_SS_STATS: 2232 return i40e_get_stats_count(netdev); 2233 case ETH_SS_PRIV_FLAGS: 2234 return I40E_PRIV_FLAGS_STR_LEN + 2235 (pf->hw.pf_id == 0 ? I40E_GL_PRIV_FLAGS_STR_LEN : 0); 2236 default: 2237 return -EOPNOTSUPP; 2238 } 2239 } 2240 2241 /** 2242 * i40e_get_veb_tc_stats - copy VEB TC statistics to formatted structure 2243 * @tc: the TC statistics in VEB structure (veb->tc_stats) 2244 * @i: the index of traffic class in (veb->tc_stats) structure to copy 2245 * 2246 * Copy VEB TC statistics from structure of arrays (veb->tc_stats) to 2247 * one dimensional structure i40e_cp_veb_tc_stats. 2248 * Produce formatted i40e_cp_veb_tc_stats structure of the VEB TC 2249 * statistics for the given TC. 2250 **/ 2251 static struct i40e_cp_veb_tc_stats 2252 i40e_get_veb_tc_stats(struct i40e_veb_tc_stats *tc, unsigned int i) 2253 { 2254 struct i40e_cp_veb_tc_stats veb_tc = { 2255 .tc_rx_packets = tc->tc_rx_packets[i], 2256 .tc_rx_bytes = tc->tc_rx_bytes[i], 2257 .tc_tx_packets = tc->tc_tx_packets[i], 2258 .tc_tx_bytes = tc->tc_tx_bytes[i], 2259 }; 2260 2261 return veb_tc; 2262 } 2263 2264 /** 2265 * i40e_get_pfc_stats - copy HW PFC statistics to formatted structure 2266 * @pf: the PF device structure 2267 * @i: the priority value to copy 2268 * 2269 * The PFC stats are found as arrays in pf->stats, which is not easy to pass 2270 * into i40e_add_ethtool_stats. Produce a formatted i40e_pfc_stats structure 2271 * of the PFC stats for the given priority. 2272 **/ 2273 static inline struct i40e_pfc_stats 2274 i40e_get_pfc_stats(struct i40e_pf *pf, unsigned int i) 2275 { 2276 #define I40E_GET_PFC_STAT(stat, priority) \ 2277 .stat = pf->stats.stat[priority] 2278 2279 struct i40e_pfc_stats pfc = { 2280 I40E_GET_PFC_STAT(priority_xon_rx, i), 2281 I40E_GET_PFC_STAT(priority_xoff_rx, i), 2282 I40E_GET_PFC_STAT(priority_xon_tx, i), 2283 I40E_GET_PFC_STAT(priority_xoff_tx, i), 2284 I40E_GET_PFC_STAT(priority_xon_2_xoff, i), 2285 }; 2286 return pfc; 2287 } 2288 2289 /** 2290 * i40e_get_ethtool_stats - copy stat values into supplied buffer 2291 * @netdev: the netdev to collect stats for 2292 * @stats: ethtool stats command structure 2293 * @data: ethtool supplied buffer 2294 * 2295 * Copy the stats values for this netdev into the buffer. Expects data to be 2296 * pre-allocated to the size returned by i40e_get_stats_count.. Note that all 2297 * statistics must be copied in a static order, and the count must not change 2298 * for a given netdev. See i40e_get_stats_count for more details. 2299 * 2300 * If a statistic is not currently valid (such as a disabled queue), this 2301 * function reports its value as zero. 2302 **/ 2303 static void i40e_get_ethtool_stats(struct net_device *netdev, 2304 struct ethtool_stats *stats, u64 *data) 2305 { 2306 struct i40e_netdev_priv *np = netdev_priv(netdev); 2307 struct i40e_vsi *vsi = np->vsi; 2308 struct i40e_pf *pf = vsi->back; 2309 struct i40e_veb *veb = NULL; 2310 unsigned int i; 2311 bool veb_stats; 2312 u64 *p = data; 2313 2314 i40e_update_stats(vsi); 2315 2316 i40e_add_ethtool_stats(&data, i40e_get_vsi_stats_struct(vsi), 2317 i40e_gstrings_net_stats); 2318 2319 i40e_add_ethtool_stats(&data, vsi, i40e_gstrings_misc_stats); 2320 2321 rcu_read_lock(); 2322 for (i = 0; i < netdev->num_tx_queues; i++) { 2323 i40e_add_queue_stats(&data, READ_ONCE(vsi->tx_rings[i])); 2324 i40e_add_queue_stats(&data, READ_ONCE(vsi->rx_rings[i])); 2325 } 2326 rcu_read_unlock(); 2327 2328 if (vsi != pf->vsi[pf->lan_vsi] || pf->hw.partition_id != 1) 2329 goto check_data_pointer; 2330 2331 veb_stats = ((pf->lan_veb != I40E_NO_VEB) && 2332 (pf->lan_veb < I40E_MAX_VEB) && 2333 (pf->flags & I40E_FLAG_VEB_STATS_ENABLED)); 2334 2335 if (veb_stats) { 2336 veb = pf->veb[pf->lan_veb]; 2337 i40e_update_veb_stats(veb); 2338 } 2339 2340 /* If veb stats aren't enabled, pass NULL instead of the veb so that 2341 * we initialize stats to zero and update the data pointer 2342 * intelligently 2343 */ 2344 i40e_add_ethtool_stats(&data, veb_stats ? veb : NULL, 2345 i40e_gstrings_veb_stats); 2346 2347 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) 2348 if (veb_stats) { 2349 struct i40e_cp_veb_tc_stats veb_tc = 2350 i40e_get_veb_tc_stats(&veb->tc_stats, i); 2351 2352 i40e_add_ethtool_stats(&data, &veb_tc, 2353 i40e_gstrings_veb_tc_stats); 2354 } else { 2355 i40e_add_ethtool_stats(&data, NULL, 2356 i40e_gstrings_veb_tc_stats); 2357 } 2358 2359 i40e_add_ethtool_stats(&data, pf, i40e_gstrings_stats); 2360 2361 for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) { 2362 struct i40e_pfc_stats pfc = i40e_get_pfc_stats(pf, i); 2363 2364 i40e_add_ethtool_stats(&data, &pfc, i40e_gstrings_pfc_stats); 2365 } 2366 2367 check_data_pointer: 2368 WARN_ONCE(data - p != i40e_get_stats_count(netdev), 2369 "ethtool stats count mismatch!"); 2370 } 2371 2372 /** 2373 * i40e_get_stat_strings - copy stat strings into supplied buffer 2374 * @netdev: the netdev to collect strings for 2375 * @data: supplied buffer to copy strings into 2376 * 2377 * Copy the strings related to stats for this netdev. Expects data to be 2378 * pre-allocated with the size reported by i40e_get_stats_count. Note that the 2379 * strings must be copied in a static order and the total count must not 2380 * change for a given netdev. See i40e_get_stats_count for more details. 2381 **/ 2382 static void i40e_get_stat_strings(struct net_device *netdev, u8 *data) 2383 { 2384 struct i40e_netdev_priv *np = netdev_priv(netdev); 2385 struct i40e_vsi *vsi = np->vsi; 2386 struct i40e_pf *pf = vsi->back; 2387 unsigned int i; 2388 u8 *p = data; 2389 2390 i40e_add_stat_strings(&data, i40e_gstrings_net_stats); 2391 2392 i40e_add_stat_strings(&data, i40e_gstrings_misc_stats); 2393 2394 for (i = 0; i < netdev->num_tx_queues; i++) { 2395 i40e_add_stat_strings(&data, i40e_gstrings_queue_stats, 2396 "tx", i); 2397 i40e_add_stat_strings(&data, i40e_gstrings_queue_stats, 2398 "rx", i); 2399 } 2400 2401 if (vsi != pf->vsi[pf->lan_vsi] || pf->hw.partition_id != 1) 2402 goto check_data_pointer; 2403 2404 i40e_add_stat_strings(&data, i40e_gstrings_veb_stats); 2405 2406 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) 2407 i40e_add_stat_strings(&data, i40e_gstrings_veb_tc_stats, i); 2408 2409 i40e_add_stat_strings(&data, i40e_gstrings_stats); 2410 2411 for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) 2412 i40e_add_stat_strings(&data, i40e_gstrings_pfc_stats, i); 2413 2414 check_data_pointer: 2415 WARN_ONCE(data - p != i40e_get_stats_count(netdev) * ETH_GSTRING_LEN, 2416 "stat strings count mismatch!"); 2417 } 2418 2419 static void i40e_get_priv_flag_strings(struct net_device *netdev, u8 *data) 2420 { 2421 struct i40e_netdev_priv *np = netdev_priv(netdev); 2422 struct i40e_vsi *vsi = np->vsi; 2423 struct i40e_pf *pf = vsi->back; 2424 unsigned int i; 2425 u8 *p = data; 2426 2427 for (i = 0; i < I40E_PRIV_FLAGS_STR_LEN; i++) 2428 ethtool_sprintf(&p, i40e_gstrings_priv_flags[i].flag_string); 2429 if (pf->hw.pf_id != 0) 2430 return; 2431 for (i = 0; i < I40E_GL_PRIV_FLAGS_STR_LEN; i++) 2432 ethtool_sprintf(&p, i40e_gl_gstrings_priv_flags[i].flag_string); 2433 } 2434 2435 static void i40e_get_strings(struct net_device *netdev, u32 stringset, 2436 u8 *data) 2437 { 2438 switch (stringset) { 2439 case ETH_SS_TEST: 2440 memcpy(data, i40e_gstrings_test, 2441 I40E_TEST_LEN * ETH_GSTRING_LEN); 2442 break; 2443 case ETH_SS_STATS: 2444 i40e_get_stat_strings(netdev, data); 2445 break; 2446 case ETH_SS_PRIV_FLAGS: 2447 i40e_get_priv_flag_strings(netdev, data); 2448 break; 2449 default: 2450 break; 2451 } 2452 } 2453 2454 static int i40e_get_ts_info(struct net_device *dev, 2455 struct ethtool_ts_info *info) 2456 { 2457 struct i40e_pf *pf = i40e_netdev_to_pf(dev); 2458 2459 /* only report HW timestamping if PTP is enabled */ 2460 if (!(pf->flags & I40E_FLAG_PTP)) 2461 return ethtool_op_get_ts_info(dev, info); 2462 2463 info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE | 2464 SOF_TIMESTAMPING_RX_SOFTWARE | 2465 SOF_TIMESTAMPING_SOFTWARE | 2466 SOF_TIMESTAMPING_TX_HARDWARE | 2467 SOF_TIMESTAMPING_RX_HARDWARE | 2468 SOF_TIMESTAMPING_RAW_HARDWARE; 2469 2470 if (pf->ptp_clock) 2471 info->phc_index = ptp_clock_index(pf->ptp_clock); 2472 else 2473 info->phc_index = -1; 2474 2475 info->tx_types = BIT(HWTSTAMP_TX_OFF) | BIT(HWTSTAMP_TX_ON); 2476 2477 info->rx_filters = BIT(HWTSTAMP_FILTER_NONE) | 2478 BIT(HWTSTAMP_FILTER_PTP_V2_L2_EVENT) | 2479 BIT(HWTSTAMP_FILTER_PTP_V2_L2_SYNC) | 2480 BIT(HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ); 2481 2482 if (pf->hw_features & I40E_HW_PTP_L4_CAPABLE) 2483 info->rx_filters |= BIT(HWTSTAMP_FILTER_PTP_V1_L4_SYNC) | 2484 BIT(HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ) | 2485 BIT(HWTSTAMP_FILTER_PTP_V2_EVENT) | 2486 BIT(HWTSTAMP_FILTER_PTP_V2_L4_EVENT) | 2487 BIT(HWTSTAMP_FILTER_PTP_V2_SYNC) | 2488 BIT(HWTSTAMP_FILTER_PTP_V2_L4_SYNC) | 2489 BIT(HWTSTAMP_FILTER_PTP_V2_DELAY_REQ) | 2490 BIT(HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ); 2491 2492 return 0; 2493 } 2494 2495 static u64 i40e_link_test(struct net_device *netdev, u64 *data) 2496 { 2497 struct i40e_netdev_priv *np = netdev_priv(netdev); 2498 struct i40e_pf *pf = np->vsi->back; 2499 i40e_status status; 2500 bool link_up = false; 2501 2502 netif_info(pf, hw, netdev, "link test\n"); 2503 status = i40e_get_link_status(&pf->hw, &link_up); 2504 if (status) { 2505 netif_err(pf, drv, netdev, "link query timed out, please retry test\n"); 2506 *data = 1; 2507 return *data; 2508 } 2509 2510 if (link_up) 2511 *data = 0; 2512 else 2513 *data = 1; 2514 2515 return *data; 2516 } 2517 2518 static u64 i40e_reg_test(struct net_device *netdev, u64 *data) 2519 { 2520 struct i40e_netdev_priv *np = netdev_priv(netdev); 2521 struct i40e_pf *pf = np->vsi->back; 2522 2523 netif_info(pf, hw, netdev, "register test\n"); 2524 *data = i40e_diag_reg_test(&pf->hw); 2525 2526 return *data; 2527 } 2528 2529 static u64 i40e_eeprom_test(struct net_device *netdev, u64 *data) 2530 { 2531 struct i40e_netdev_priv *np = netdev_priv(netdev); 2532 struct i40e_pf *pf = np->vsi->back; 2533 2534 netif_info(pf, hw, netdev, "eeprom test\n"); 2535 *data = i40e_diag_eeprom_test(&pf->hw); 2536 2537 /* forcebly clear the NVM Update state machine */ 2538 pf->hw.nvmupd_state = I40E_NVMUPD_STATE_INIT; 2539 2540 return *data; 2541 } 2542 2543 static u64 i40e_intr_test(struct net_device *netdev, u64 *data) 2544 { 2545 struct i40e_netdev_priv *np = netdev_priv(netdev); 2546 struct i40e_pf *pf = np->vsi->back; 2547 u16 swc_old = pf->sw_int_count; 2548 2549 netif_info(pf, hw, netdev, "interrupt test\n"); 2550 wr32(&pf->hw, I40E_PFINT_DYN_CTL0, 2551 (I40E_PFINT_DYN_CTL0_INTENA_MASK | 2552 I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK | 2553 I40E_PFINT_DYN_CTL0_ITR_INDX_MASK | 2554 I40E_PFINT_DYN_CTL0_SW_ITR_INDX_ENA_MASK | 2555 I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK)); 2556 usleep_range(1000, 2000); 2557 *data = (swc_old == pf->sw_int_count); 2558 2559 return *data; 2560 } 2561 2562 static inline bool i40e_active_vfs(struct i40e_pf *pf) 2563 { 2564 struct i40e_vf *vfs = pf->vf; 2565 int i; 2566 2567 for (i = 0; i < pf->num_alloc_vfs; i++) 2568 if (test_bit(I40E_VF_STATE_ACTIVE, &vfs[i].vf_states)) 2569 return true; 2570 return false; 2571 } 2572 2573 static inline bool i40e_active_vmdqs(struct i40e_pf *pf) 2574 { 2575 return !!i40e_find_vsi_by_type(pf, I40E_VSI_VMDQ2); 2576 } 2577 2578 static void i40e_diag_test(struct net_device *netdev, 2579 struct ethtool_test *eth_test, u64 *data) 2580 { 2581 struct i40e_netdev_priv *np = netdev_priv(netdev); 2582 bool if_running = netif_running(netdev); 2583 struct i40e_pf *pf = np->vsi->back; 2584 2585 if (eth_test->flags == ETH_TEST_FL_OFFLINE) { 2586 /* Offline tests */ 2587 netif_info(pf, drv, netdev, "offline testing starting\n"); 2588 2589 set_bit(__I40E_TESTING, pf->state); 2590 2591 if (i40e_active_vfs(pf) || i40e_active_vmdqs(pf)) { 2592 dev_warn(&pf->pdev->dev, 2593 "Please take active VFs and Netqueues offline and restart the adapter before running NIC diagnostics\n"); 2594 data[I40E_ETH_TEST_REG] = 1; 2595 data[I40E_ETH_TEST_EEPROM] = 1; 2596 data[I40E_ETH_TEST_INTR] = 1; 2597 data[I40E_ETH_TEST_LINK] = 1; 2598 eth_test->flags |= ETH_TEST_FL_FAILED; 2599 clear_bit(__I40E_TESTING, pf->state); 2600 goto skip_ol_tests; 2601 } 2602 2603 /* If the device is online then take it offline */ 2604 if (if_running) 2605 /* indicate we're in test mode */ 2606 i40e_close(netdev); 2607 else 2608 /* This reset does not affect link - if it is 2609 * changed to a type of reset that does affect 2610 * link then the following link test would have 2611 * to be moved to before the reset 2612 */ 2613 i40e_do_reset(pf, BIT(__I40E_PF_RESET_REQUESTED), true); 2614 2615 if (i40e_link_test(netdev, &data[I40E_ETH_TEST_LINK])) 2616 eth_test->flags |= ETH_TEST_FL_FAILED; 2617 2618 if (i40e_eeprom_test(netdev, &data[I40E_ETH_TEST_EEPROM])) 2619 eth_test->flags |= ETH_TEST_FL_FAILED; 2620 2621 if (i40e_intr_test(netdev, &data[I40E_ETH_TEST_INTR])) 2622 eth_test->flags |= ETH_TEST_FL_FAILED; 2623 2624 /* run reg test last, a reset is required after it */ 2625 if (i40e_reg_test(netdev, &data[I40E_ETH_TEST_REG])) 2626 eth_test->flags |= ETH_TEST_FL_FAILED; 2627 2628 clear_bit(__I40E_TESTING, pf->state); 2629 i40e_do_reset(pf, BIT(__I40E_PF_RESET_REQUESTED), true); 2630 2631 if (if_running) 2632 i40e_open(netdev); 2633 } else { 2634 /* Online tests */ 2635 netif_info(pf, drv, netdev, "online testing starting\n"); 2636 2637 if (i40e_link_test(netdev, &data[I40E_ETH_TEST_LINK])) 2638 eth_test->flags |= ETH_TEST_FL_FAILED; 2639 2640 /* Offline only tests, not run in online; pass by default */ 2641 data[I40E_ETH_TEST_REG] = 0; 2642 data[I40E_ETH_TEST_EEPROM] = 0; 2643 data[I40E_ETH_TEST_INTR] = 0; 2644 } 2645 2646 skip_ol_tests: 2647 2648 netif_info(pf, drv, netdev, "testing finished\n"); 2649 } 2650 2651 static void i40e_get_wol(struct net_device *netdev, 2652 struct ethtool_wolinfo *wol) 2653 { 2654 struct i40e_netdev_priv *np = netdev_priv(netdev); 2655 struct i40e_pf *pf = np->vsi->back; 2656 struct i40e_hw *hw = &pf->hw; 2657 u16 wol_nvm_bits; 2658 2659 /* NVM bit on means WoL disabled for the port */ 2660 i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits); 2661 if ((BIT(hw->port) & wol_nvm_bits) || (hw->partition_id != 1)) { 2662 wol->supported = 0; 2663 wol->wolopts = 0; 2664 } else { 2665 wol->supported = WAKE_MAGIC; 2666 wol->wolopts = (pf->wol_en ? WAKE_MAGIC : 0); 2667 } 2668 } 2669 2670 /** 2671 * i40e_set_wol - set the WakeOnLAN configuration 2672 * @netdev: the netdev in question 2673 * @wol: the ethtool WoL setting data 2674 **/ 2675 static int i40e_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol) 2676 { 2677 struct i40e_netdev_priv *np = netdev_priv(netdev); 2678 struct i40e_pf *pf = np->vsi->back; 2679 struct i40e_vsi *vsi = np->vsi; 2680 struct i40e_hw *hw = &pf->hw; 2681 u16 wol_nvm_bits; 2682 2683 /* WoL not supported if this isn't the controlling PF on the port */ 2684 if (hw->partition_id != 1) { 2685 i40e_partition_setting_complaint(pf); 2686 return -EOPNOTSUPP; 2687 } 2688 2689 if (vsi != pf->vsi[pf->lan_vsi]) 2690 return -EOPNOTSUPP; 2691 2692 /* NVM bit on means WoL disabled for the port */ 2693 i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits); 2694 if (BIT(hw->port) & wol_nvm_bits) 2695 return -EOPNOTSUPP; 2696 2697 /* only magic packet is supported */ 2698 if (wol->wolopts & ~WAKE_MAGIC) 2699 return -EOPNOTSUPP; 2700 2701 /* is this a new value? */ 2702 if (pf->wol_en != !!wol->wolopts) { 2703 pf->wol_en = !!wol->wolopts; 2704 device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en); 2705 } 2706 2707 return 0; 2708 } 2709 2710 static int i40e_set_phys_id(struct net_device *netdev, 2711 enum ethtool_phys_id_state state) 2712 { 2713 struct i40e_netdev_priv *np = netdev_priv(netdev); 2714 i40e_status ret = 0; 2715 struct i40e_pf *pf = np->vsi->back; 2716 struct i40e_hw *hw = &pf->hw; 2717 int blink_freq = 2; 2718 u16 temp_status; 2719 2720 switch (state) { 2721 case ETHTOOL_ID_ACTIVE: 2722 if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS)) { 2723 pf->led_status = i40e_led_get(hw); 2724 } else { 2725 if (!(hw->flags & I40E_HW_FLAG_AQ_PHY_ACCESS_CAPABLE)) 2726 i40e_aq_set_phy_debug(hw, I40E_PHY_DEBUG_ALL, 2727 NULL); 2728 ret = i40e_led_get_phy(hw, &temp_status, 2729 &pf->phy_led_val); 2730 pf->led_status = temp_status; 2731 } 2732 return blink_freq; 2733 case ETHTOOL_ID_ON: 2734 if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS)) 2735 i40e_led_set(hw, 0xf, false); 2736 else 2737 ret = i40e_led_set_phy(hw, true, pf->led_status, 0); 2738 break; 2739 case ETHTOOL_ID_OFF: 2740 if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS)) 2741 i40e_led_set(hw, 0x0, false); 2742 else 2743 ret = i40e_led_set_phy(hw, false, pf->led_status, 0); 2744 break; 2745 case ETHTOOL_ID_INACTIVE: 2746 if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS)) { 2747 i40e_led_set(hw, pf->led_status, false); 2748 } else { 2749 ret = i40e_led_set_phy(hw, false, pf->led_status, 2750 (pf->phy_led_val | 2751 I40E_PHY_LED_MODE_ORIG)); 2752 if (!(hw->flags & I40E_HW_FLAG_AQ_PHY_ACCESS_CAPABLE)) 2753 i40e_aq_set_phy_debug(hw, 0, NULL); 2754 } 2755 break; 2756 default: 2757 break; 2758 } 2759 if (ret) 2760 return -ENOENT; 2761 else 2762 return 0; 2763 } 2764 2765 /* NOTE: i40e hardware uses a conversion factor of 2 for Interrupt 2766 * Throttle Rate (ITR) ie. ITR(1) = 2us ITR(10) = 20 us, and also 2767 * 125us (8000 interrupts per second) == ITR(62) 2768 */ 2769 2770 /** 2771 * __i40e_get_coalesce - get per-queue coalesce settings 2772 * @netdev: the netdev to check 2773 * @ec: ethtool coalesce data structure 2774 * @queue: which queue to pick 2775 * 2776 * Gets the per-queue settings for coalescence. Specifically Rx and Tx usecs 2777 * are per queue. If queue is <0 then we default to queue 0 as the 2778 * representative value. 2779 **/ 2780 static int __i40e_get_coalesce(struct net_device *netdev, 2781 struct ethtool_coalesce *ec, 2782 int queue) 2783 { 2784 struct i40e_netdev_priv *np = netdev_priv(netdev); 2785 struct i40e_ring *rx_ring, *tx_ring; 2786 struct i40e_vsi *vsi = np->vsi; 2787 2788 ec->tx_max_coalesced_frames_irq = vsi->work_limit; 2789 ec->rx_max_coalesced_frames_irq = vsi->work_limit; 2790 2791 /* rx and tx usecs has per queue value. If user doesn't specify the 2792 * queue, return queue 0's value to represent. 2793 */ 2794 if (queue < 0) 2795 queue = 0; 2796 else if (queue >= vsi->num_queue_pairs) 2797 return -EINVAL; 2798 2799 rx_ring = vsi->rx_rings[queue]; 2800 tx_ring = vsi->tx_rings[queue]; 2801 2802 if (ITR_IS_DYNAMIC(rx_ring->itr_setting)) 2803 ec->use_adaptive_rx_coalesce = 1; 2804 2805 if (ITR_IS_DYNAMIC(tx_ring->itr_setting)) 2806 ec->use_adaptive_tx_coalesce = 1; 2807 2808 ec->rx_coalesce_usecs = rx_ring->itr_setting & ~I40E_ITR_DYNAMIC; 2809 ec->tx_coalesce_usecs = tx_ring->itr_setting & ~I40E_ITR_DYNAMIC; 2810 2811 /* we use the _usecs_high to store/set the interrupt rate limit 2812 * that the hardware supports, that almost but not quite 2813 * fits the original intent of the ethtool variable, 2814 * the rx_coalesce_usecs_high limits total interrupts 2815 * per second from both tx/rx sources. 2816 */ 2817 ec->rx_coalesce_usecs_high = vsi->int_rate_limit; 2818 ec->tx_coalesce_usecs_high = vsi->int_rate_limit; 2819 2820 return 0; 2821 } 2822 2823 /** 2824 * i40e_get_coalesce - get a netdev's coalesce settings 2825 * @netdev: the netdev to check 2826 * @ec: ethtool coalesce data structure 2827 * @kernel_coal: ethtool CQE mode setting structure 2828 * @extack: extack for reporting error messages 2829 * 2830 * Gets the coalesce settings for a particular netdev. Note that if user has 2831 * modified per-queue settings, this only guarantees to represent queue 0. See 2832 * __i40e_get_coalesce for more details. 2833 **/ 2834 static int i40e_get_coalesce(struct net_device *netdev, 2835 struct ethtool_coalesce *ec, 2836 struct kernel_ethtool_coalesce *kernel_coal, 2837 struct netlink_ext_ack *extack) 2838 { 2839 return __i40e_get_coalesce(netdev, ec, -1); 2840 } 2841 2842 /** 2843 * i40e_get_per_queue_coalesce - gets coalesce settings for particular queue 2844 * @netdev: netdev structure 2845 * @ec: ethtool's coalesce settings 2846 * @queue: the particular queue to read 2847 * 2848 * Will read a specific queue's coalesce settings 2849 **/ 2850 static int i40e_get_per_queue_coalesce(struct net_device *netdev, u32 queue, 2851 struct ethtool_coalesce *ec) 2852 { 2853 return __i40e_get_coalesce(netdev, ec, queue); 2854 } 2855 2856 /** 2857 * i40e_set_itr_per_queue - set ITR values for specific queue 2858 * @vsi: the VSI to set values for 2859 * @ec: coalesce settings from ethtool 2860 * @queue: the queue to modify 2861 * 2862 * Change the ITR settings for a specific queue. 2863 **/ 2864 static void i40e_set_itr_per_queue(struct i40e_vsi *vsi, 2865 struct ethtool_coalesce *ec, 2866 int queue) 2867 { 2868 struct i40e_ring *rx_ring = vsi->rx_rings[queue]; 2869 struct i40e_ring *tx_ring = vsi->tx_rings[queue]; 2870 struct i40e_pf *pf = vsi->back; 2871 struct i40e_hw *hw = &pf->hw; 2872 struct i40e_q_vector *q_vector; 2873 u16 intrl; 2874 2875 intrl = i40e_intrl_usec_to_reg(vsi->int_rate_limit); 2876 2877 rx_ring->itr_setting = ITR_REG_ALIGN(ec->rx_coalesce_usecs); 2878 tx_ring->itr_setting = ITR_REG_ALIGN(ec->tx_coalesce_usecs); 2879 2880 if (ec->use_adaptive_rx_coalesce) 2881 rx_ring->itr_setting |= I40E_ITR_DYNAMIC; 2882 else 2883 rx_ring->itr_setting &= ~I40E_ITR_DYNAMIC; 2884 2885 if (ec->use_adaptive_tx_coalesce) 2886 tx_ring->itr_setting |= I40E_ITR_DYNAMIC; 2887 else 2888 tx_ring->itr_setting &= ~I40E_ITR_DYNAMIC; 2889 2890 q_vector = rx_ring->q_vector; 2891 q_vector->rx.target_itr = ITR_TO_REG(rx_ring->itr_setting); 2892 2893 q_vector = tx_ring->q_vector; 2894 q_vector->tx.target_itr = ITR_TO_REG(tx_ring->itr_setting); 2895 2896 /* The interrupt handler itself will take care of programming 2897 * the Tx and Rx ITR values based on the values we have entered 2898 * into the q_vector, no need to write the values now. 2899 */ 2900 2901 wr32(hw, I40E_PFINT_RATEN(q_vector->reg_idx), intrl); 2902 i40e_flush(hw); 2903 } 2904 2905 /** 2906 * __i40e_set_coalesce - set coalesce settings for particular queue 2907 * @netdev: the netdev to change 2908 * @ec: ethtool coalesce settings 2909 * @queue: the queue to change 2910 * 2911 * Sets the coalesce settings for a particular queue. 2912 **/ 2913 static int __i40e_set_coalesce(struct net_device *netdev, 2914 struct ethtool_coalesce *ec, 2915 int queue) 2916 { 2917 struct i40e_netdev_priv *np = netdev_priv(netdev); 2918 u16 intrl_reg, cur_rx_itr, cur_tx_itr; 2919 struct i40e_vsi *vsi = np->vsi; 2920 struct i40e_pf *pf = vsi->back; 2921 int i; 2922 2923 if (ec->tx_max_coalesced_frames_irq || ec->rx_max_coalesced_frames_irq) 2924 vsi->work_limit = ec->tx_max_coalesced_frames_irq; 2925 2926 if (queue < 0) { 2927 cur_rx_itr = vsi->rx_rings[0]->itr_setting; 2928 cur_tx_itr = vsi->tx_rings[0]->itr_setting; 2929 } else if (queue < vsi->num_queue_pairs) { 2930 cur_rx_itr = vsi->rx_rings[queue]->itr_setting; 2931 cur_tx_itr = vsi->tx_rings[queue]->itr_setting; 2932 } else { 2933 netif_info(pf, drv, netdev, "Invalid queue value, queue range is 0 - %d\n", 2934 vsi->num_queue_pairs - 1); 2935 return -EINVAL; 2936 } 2937 2938 cur_tx_itr &= ~I40E_ITR_DYNAMIC; 2939 cur_rx_itr &= ~I40E_ITR_DYNAMIC; 2940 2941 /* tx_coalesce_usecs_high is ignored, use rx-usecs-high instead */ 2942 if (ec->tx_coalesce_usecs_high != vsi->int_rate_limit) { 2943 netif_info(pf, drv, netdev, "tx-usecs-high is not used, please program rx-usecs-high\n"); 2944 return -EINVAL; 2945 } 2946 2947 if (ec->rx_coalesce_usecs_high > INTRL_REG_TO_USEC(I40E_MAX_INTRL)) { 2948 netif_info(pf, drv, netdev, "Invalid value, rx-usecs-high range is 0-%lu\n", 2949 INTRL_REG_TO_USEC(I40E_MAX_INTRL)); 2950 return -EINVAL; 2951 } 2952 2953 if (ec->rx_coalesce_usecs != cur_rx_itr && 2954 ec->use_adaptive_rx_coalesce) { 2955 netif_info(pf, drv, netdev, "RX interrupt moderation cannot be changed if adaptive-rx is enabled.\n"); 2956 return -EINVAL; 2957 } 2958 2959 if (ec->rx_coalesce_usecs > I40E_MAX_ITR) { 2960 netif_info(pf, drv, netdev, "Invalid value, rx-usecs range is 0-8160\n"); 2961 return -EINVAL; 2962 } 2963 2964 if (ec->tx_coalesce_usecs != cur_tx_itr && 2965 ec->use_adaptive_tx_coalesce) { 2966 netif_info(pf, drv, netdev, "TX interrupt moderation cannot be changed if adaptive-tx is enabled.\n"); 2967 return -EINVAL; 2968 } 2969 2970 if (ec->tx_coalesce_usecs > I40E_MAX_ITR) { 2971 netif_info(pf, drv, netdev, "Invalid value, tx-usecs range is 0-8160\n"); 2972 return -EINVAL; 2973 } 2974 2975 if (ec->use_adaptive_rx_coalesce && !cur_rx_itr) 2976 ec->rx_coalesce_usecs = I40E_MIN_ITR; 2977 2978 if (ec->use_adaptive_tx_coalesce && !cur_tx_itr) 2979 ec->tx_coalesce_usecs = I40E_MIN_ITR; 2980 2981 intrl_reg = i40e_intrl_usec_to_reg(ec->rx_coalesce_usecs_high); 2982 vsi->int_rate_limit = INTRL_REG_TO_USEC(intrl_reg); 2983 if (vsi->int_rate_limit != ec->rx_coalesce_usecs_high) { 2984 netif_info(pf, drv, netdev, "Interrupt rate limit rounded down to %d\n", 2985 vsi->int_rate_limit); 2986 } 2987 2988 /* rx and tx usecs has per queue value. If user doesn't specify the 2989 * queue, apply to all queues. 2990 */ 2991 if (queue < 0) { 2992 for (i = 0; i < vsi->num_queue_pairs; i++) 2993 i40e_set_itr_per_queue(vsi, ec, i); 2994 } else { 2995 i40e_set_itr_per_queue(vsi, ec, queue); 2996 } 2997 2998 return 0; 2999 } 3000 3001 /** 3002 * i40e_set_coalesce - set coalesce settings for every queue on the netdev 3003 * @netdev: the netdev to change 3004 * @ec: ethtool coalesce settings 3005 * @kernel_coal: ethtool CQE mode setting structure 3006 * @extack: extack for reporting error messages 3007 * 3008 * This will set each queue to the same coalesce settings. 3009 **/ 3010 static int i40e_set_coalesce(struct net_device *netdev, 3011 struct ethtool_coalesce *ec, 3012 struct kernel_ethtool_coalesce *kernel_coal, 3013 struct netlink_ext_ack *extack) 3014 { 3015 return __i40e_set_coalesce(netdev, ec, -1); 3016 } 3017 3018 /** 3019 * i40e_set_per_queue_coalesce - set specific queue's coalesce settings 3020 * @netdev: the netdev to change 3021 * @ec: ethtool's coalesce settings 3022 * @queue: the queue to change 3023 * 3024 * Sets the specified queue's coalesce settings. 3025 **/ 3026 static int i40e_set_per_queue_coalesce(struct net_device *netdev, u32 queue, 3027 struct ethtool_coalesce *ec) 3028 { 3029 return __i40e_set_coalesce(netdev, ec, queue); 3030 } 3031 3032 /** 3033 * i40e_get_rss_hash_opts - Get RSS hash Input Set for each flow type 3034 * @pf: pointer to the physical function struct 3035 * @cmd: ethtool rxnfc command 3036 * 3037 * Returns Success if the flow is supported, else Invalid Input. 3038 **/ 3039 static int i40e_get_rss_hash_opts(struct i40e_pf *pf, struct ethtool_rxnfc *cmd) 3040 { 3041 struct i40e_hw *hw = &pf->hw; 3042 u8 flow_pctype = 0; 3043 u64 i_set = 0; 3044 3045 cmd->data = 0; 3046 3047 switch (cmd->flow_type) { 3048 case TCP_V4_FLOW: 3049 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_TCP; 3050 break; 3051 case UDP_V4_FLOW: 3052 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_UDP; 3053 break; 3054 case TCP_V6_FLOW: 3055 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_TCP; 3056 break; 3057 case UDP_V6_FLOW: 3058 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_UDP; 3059 break; 3060 case SCTP_V4_FLOW: 3061 case AH_ESP_V4_FLOW: 3062 case AH_V4_FLOW: 3063 case ESP_V4_FLOW: 3064 case IPV4_FLOW: 3065 case SCTP_V6_FLOW: 3066 case AH_ESP_V6_FLOW: 3067 case AH_V6_FLOW: 3068 case ESP_V6_FLOW: 3069 case IPV6_FLOW: 3070 /* Default is src/dest for IP, no matter the L4 hashing */ 3071 cmd->data |= RXH_IP_SRC | RXH_IP_DST; 3072 break; 3073 default: 3074 return -EINVAL; 3075 } 3076 3077 /* Read flow based hash input set register */ 3078 if (flow_pctype) { 3079 i_set = (u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(0, 3080 flow_pctype)) | 3081 ((u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(1, 3082 flow_pctype)) << 32); 3083 } 3084 3085 /* Process bits of hash input set */ 3086 if (i_set) { 3087 if (i_set & I40E_L4_SRC_MASK) 3088 cmd->data |= RXH_L4_B_0_1; 3089 if (i_set & I40E_L4_DST_MASK) 3090 cmd->data |= RXH_L4_B_2_3; 3091 3092 if (cmd->flow_type == TCP_V4_FLOW || 3093 cmd->flow_type == UDP_V4_FLOW) { 3094 if (i_set & I40E_L3_SRC_MASK) 3095 cmd->data |= RXH_IP_SRC; 3096 if (i_set & I40E_L3_DST_MASK) 3097 cmd->data |= RXH_IP_DST; 3098 } else if (cmd->flow_type == TCP_V6_FLOW || 3099 cmd->flow_type == UDP_V6_FLOW) { 3100 if (i_set & I40E_L3_V6_SRC_MASK) 3101 cmd->data |= RXH_IP_SRC; 3102 if (i_set & I40E_L3_V6_DST_MASK) 3103 cmd->data |= RXH_IP_DST; 3104 } 3105 } 3106 3107 return 0; 3108 } 3109 3110 /** 3111 * i40e_check_mask - Check whether a mask field is set 3112 * @mask: the full mask value 3113 * @field: mask of the field to check 3114 * 3115 * If the given mask is fully set, return positive value. If the mask for the 3116 * field is fully unset, return zero. Otherwise return a negative error code. 3117 **/ 3118 static int i40e_check_mask(u64 mask, u64 field) 3119 { 3120 u64 value = mask & field; 3121 3122 if (value == field) 3123 return 1; 3124 else if (!value) 3125 return 0; 3126 else 3127 return -1; 3128 } 3129 3130 /** 3131 * i40e_parse_rx_flow_user_data - Deconstruct user-defined data 3132 * @fsp: pointer to rx flow specification 3133 * @data: pointer to userdef data structure for storage 3134 * 3135 * Read the user-defined data and deconstruct the value into a structure. No 3136 * other code should read the user-defined data, so as to ensure that every 3137 * place consistently reads the value correctly. 3138 * 3139 * The user-defined field is a 64bit Big Endian format value, which we 3140 * deconstruct by reading bits or bit fields from it. Single bit flags shall 3141 * be defined starting from the highest bits, while small bit field values 3142 * shall be defined starting from the lowest bits. 3143 * 3144 * Returns 0 if the data is valid, and non-zero if the userdef data is invalid 3145 * and the filter should be rejected. The data structure will always be 3146 * modified even if FLOW_EXT is not set. 3147 * 3148 **/ 3149 static int i40e_parse_rx_flow_user_data(struct ethtool_rx_flow_spec *fsp, 3150 struct i40e_rx_flow_userdef *data) 3151 { 3152 u64 value, mask; 3153 int valid; 3154 3155 /* Zero memory first so it's always consistent. */ 3156 memset(data, 0, sizeof(*data)); 3157 3158 if (!(fsp->flow_type & FLOW_EXT)) 3159 return 0; 3160 3161 value = be64_to_cpu(*((__be64 *)fsp->h_ext.data)); 3162 mask = be64_to_cpu(*((__be64 *)fsp->m_ext.data)); 3163 3164 #define I40E_USERDEF_FLEX_WORD GENMASK_ULL(15, 0) 3165 #define I40E_USERDEF_FLEX_OFFSET GENMASK_ULL(31, 16) 3166 #define I40E_USERDEF_FLEX_FILTER GENMASK_ULL(31, 0) 3167 3168 valid = i40e_check_mask(mask, I40E_USERDEF_FLEX_FILTER); 3169 if (valid < 0) { 3170 return -EINVAL; 3171 } else if (valid) { 3172 data->flex_word = value & I40E_USERDEF_FLEX_WORD; 3173 data->flex_offset = 3174 (value & I40E_USERDEF_FLEX_OFFSET) >> 16; 3175 data->flex_filter = true; 3176 } 3177 3178 return 0; 3179 } 3180 3181 /** 3182 * i40e_fill_rx_flow_user_data - Fill in user-defined data field 3183 * @fsp: pointer to rx_flow specification 3184 * @data: pointer to return userdef data 3185 * 3186 * Reads the userdef data structure and properly fills in the user defined 3187 * fields of the rx_flow_spec. 3188 **/ 3189 static void i40e_fill_rx_flow_user_data(struct ethtool_rx_flow_spec *fsp, 3190 struct i40e_rx_flow_userdef *data) 3191 { 3192 u64 value = 0, mask = 0; 3193 3194 if (data->flex_filter) { 3195 value |= data->flex_word; 3196 value |= (u64)data->flex_offset << 16; 3197 mask |= I40E_USERDEF_FLEX_FILTER; 3198 } 3199 3200 if (value || mask) 3201 fsp->flow_type |= FLOW_EXT; 3202 3203 *((__be64 *)fsp->h_ext.data) = cpu_to_be64(value); 3204 *((__be64 *)fsp->m_ext.data) = cpu_to_be64(mask); 3205 } 3206 3207 /** 3208 * i40e_get_ethtool_fdir_all - Populates the rule count of a command 3209 * @pf: Pointer to the physical function struct 3210 * @cmd: The command to get or set Rx flow classification rules 3211 * @rule_locs: Array of used rule locations 3212 * 3213 * This function populates both the total and actual rule count of 3214 * the ethtool flow classification command 3215 * 3216 * Returns 0 on success or -EMSGSIZE if entry not found 3217 **/ 3218 static int i40e_get_ethtool_fdir_all(struct i40e_pf *pf, 3219 struct ethtool_rxnfc *cmd, 3220 u32 *rule_locs) 3221 { 3222 struct i40e_fdir_filter *rule; 3223 struct hlist_node *node2; 3224 int cnt = 0; 3225 3226 /* report total rule count */ 3227 cmd->data = i40e_get_fd_cnt_all(pf); 3228 3229 hlist_for_each_entry_safe(rule, node2, 3230 &pf->fdir_filter_list, fdir_node) { 3231 if (cnt == cmd->rule_cnt) 3232 return -EMSGSIZE; 3233 3234 rule_locs[cnt] = rule->fd_id; 3235 cnt++; 3236 } 3237 3238 cmd->rule_cnt = cnt; 3239 3240 return 0; 3241 } 3242 3243 /** 3244 * i40e_get_ethtool_fdir_entry - Look up a filter based on Rx flow 3245 * @pf: Pointer to the physical function struct 3246 * @cmd: The command to get or set Rx flow classification rules 3247 * 3248 * This function looks up a filter based on the Rx flow classification 3249 * command and fills the flow spec info for it if found 3250 * 3251 * Returns 0 on success or -EINVAL if filter not found 3252 **/ 3253 static int i40e_get_ethtool_fdir_entry(struct i40e_pf *pf, 3254 struct ethtool_rxnfc *cmd) 3255 { 3256 struct ethtool_rx_flow_spec *fsp = 3257 (struct ethtool_rx_flow_spec *)&cmd->fs; 3258 struct i40e_rx_flow_userdef userdef = {0}; 3259 struct i40e_fdir_filter *rule = NULL; 3260 struct hlist_node *node2; 3261 u64 input_set; 3262 u16 index; 3263 3264 hlist_for_each_entry_safe(rule, node2, 3265 &pf->fdir_filter_list, fdir_node) { 3266 if (fsp->location <= rule->fd_id) 3267 break; 3268 } 3269 3270 if (!rule || fsp->location != rule->fd_id) 3271 return -EINVAL; 3272 3273 fsp->flow_type = rule->flow_type; 3274 if (fsp->flow_type == IP_USER_FLOW) { 3275 fsp->h_u.usr_ip4_spec.ip_ver = ETH_RX_NFC_IP4; 3276 fsp->h_u.usr_ip4_spec.proto = 0; 3277 fsp->m_u.usr_ip4_spec.proto = 0; 3278 } 3279 3280 if (fsp->flow_type == IPV6_USER_FLOW || 3281 fsp->flow_type == UDP_V6_FLOW || 3282 fsp->flow_type == TCP_V6_FLOW || 3283 fsp->flow_type == SCTP_V6_FLOW) { 3284 /* Reverse the src and dest notion, since the HW views them 3285 * from Tx perspective where as the user expects it from 3286 * Rx filter view. 3287 */ 3288 fsp->h_u.tcp_ip6_spec.psrc = rule->dst_port; 3289 fsp->h_u.tcp_ip6_spec.pdst = rule->src_port; 3290 memcpy(fsp->h_u.tcp_ip6_spec.ip6dst, rule->src_ip6, 3291 sizeof(__be32) * 4); 3292 memcpy(fsp->h_u.tcp_ip6_spec.ip6src, rule->dst_ip6, 3293 sizeof(__be32) * 4); 3294 } else { 3295 /* Reverse the src and dest notion, since the HW views them 3296 * from Tx perspective where as the user expects it from 3297 * Rx filter view. 3298 */ 3299 fsp->h_u.tcp_ip4_spec.psrc = rule->dst_port; 3300 fsp->h_u.tcp_ip4_spec.pdst = rule->src_port; 3301 fsp->h_u.tcp_ip4_spec.ip4src = rule->dst_ip; 3302 fsp->h_u.tcp_ip4_spec.ip4dst = rule->src_ip; 3303 } 3304 3305 switch (rule->flow_type) { 3306 case SCTP_V4_FLOW: 3307 index = I40E_FILTER_PCTYPE_NONF_IPV4_SCTP; 3308 break; 3309 case TCP_V4_FLOW: 3310 index = I40E_FILTER_PCTYPE_NONF_IPV4_TCP; 3311 break; 3312 case UDP_V4_FLOW: 3313 index = I40E_FILTER_PCTYPE_NONF_IPV4_UDP; 3314 break; 3315 case SCTP_V6_FLOW: 3316 index = I40E_FILTER_PCTYPE_NONF_IPV6_SCTP; 3317 break; 3318 case TCP_V6_FLOW: 3319 index = I40E_FILTER_PCTYPE_NONF_IPV6_TCP; 3320 break; 3321 case UDP_V6_FLOW: 3322 index = I40E_FILTER_PCTYPE_NONF_IPV6_UDP; 3323 break; 3324 case IP_USER_FLOW: 3325 index = I40E_FILTER_PCTYPE_NONF_IPV4_OTHER; 3326 break; 3327 case IPV6_USER_FLOW: 3328 index = I40E_FILTER_PCTYPE_NONF_IPV6_OTHER; 3329 break; 3330 default: 3331 /* If we have stored a filter with a flow type not listed here 3332 * it is almost certainly a driver bug. WARN(), and then 3333 * assign the input_set as if all fields are enabled to avoid 3334 * reading unassigned memory. 3335 */ 3336 WARN(1, "Missing input set index for flow_type %d\n", 3337 rule->flow_type); 3338 input_set = 0xFFFFFFFFFFFFFFFFULL; 3339 goto no_input_set; 3340 } 3341 3342 input_set = i40e_read_fd_input_set(pf, index); 3343 3344 no_input_set: 3345 if (input_set & I40E_L3_V6_SRC_MASK) { 3346 fsp->m_u.tcp_ip6_spec.ip6src[0] = htonl(0xFFFFFFFF); 3347 fsp->m_u.tcp_ip6_spec.ip6src[1] = htonl(0xFFFFFFFF); 3348 fsp->m_u.tcp_ip6_spec.ip6src[2] = htonl(0xFFFFFFFF); 3349 fsp->m_u.tcp_ip6_spec.ip6src[3] = htonl(0xFFFFFFFF); 3350 } 3351 3352 if (input_set & I40E_L3_V6_DST_MASK) { 3353 fsp->m_u.tcp_ip6_spec.ip6dst[0] = htonl(0xFFFFFFFF); 3354 fsp->m_u.tcp_ip6_spec.ip6dst[1] = htonl(0xFFFFFFFF); 3355 fsp->m_u.tcp_ip6_spec.ip6dst[2] = htonl(0xFFFFFFFF); 3356 fsp->m_u.tcp_ip6_spec.ip6dst[3] = htonl(0xFFFFFFFF); 3357 } 3358 3359 if (input_set & I40E_L3_SRC_MASK) 3360 fsp->m_u.tcp_ip4_spec.ip4src = htonl(0xFFFFFFFF); 3361 3362 if (input_set & I40E_L3_DST_MASK) 3363 fsp->m_u.tcp_ip4_spec.ip4dst = htonl(0xFFFFFFFF); 3364 3365 if (input_set & I40E_L4_SRC_MASK) 3366 fsp->m_u.tcp_ip4_spec.psrc = htons(0xFFFF); 3367 3368 if (input_set & I40E_L4_DST_MASK) 3369 fsp->m_u.tcp_ip4_spec.pdst = htons(0xFFFF); 3370 3371 if (rule->dest_ctl == I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET) 3372 fsp->ring_cookie = RX_CLS_FLOW_DISC; 3373 else 3374 fsp->ring_cookie = rule->q_index; 3375 3376 if (rule->vlan_tag) { 3377 fsp->h_ext.vlan_etype = rule->vlan_etype; 3378 fsp->m_ext.vlan_etype = htons(0xFFFF); 3379 fsp->h_ext.vlan_tci = rule->vlan_tag; 3380 fsp->m_ext.vlan_tci = htons(0xFFFF); 3381 fsp->flow_type |= FLOW_EXT; 3382 } 3383 3384 if (rule->dest_vsi != pf->vsi[pf->lan_vsi]->id) { 3385 struct i40e_vsi *vsi; 3386 3387 vsi = i40e_find_vsi_from_id(pf, rule->dest_vsi); 3388 if (vsi && vsi->type == I40E_VSI_SRIOV) { 3389 /* VFs are zero-indexed by the driver, but ethtool 3390 * expects them to be one-indexed, so add one here 3391 */ 3392 u64 ring_vf = vsi->vf_id + 1; 3393 3394 ring_vf <<= ETHTOOL_RX_FLOW_SPEC_RING_VF_OFF; 3395 fsp->ring_cookie |= ring_vf; 3396 } 3397 } 3398 3399 if (rule->flex_filter) { 3400 userdef.flex_filter = true; 3401 userdef.flex_word = be16_to_cpu(rule->flex_word); 3402 userdef.flex_offset = rule->flex_offset; 3403 } 3404 3405 i40e_fill_rx_flow_user_data(fsp, &userdef); 3406 3407 return 0; 3408 } 3409 3410 /** 3411 * i40e_get_rxnfc - command to get RX flow classification rules 3412 * @netdev: network interface device structure 3413 * @cmd: ethtool rxnfc command 3414 * @rule_locs: pointer to store rule data 3415 * 3416 * Returns Success if the command is supported. 3417 **/ 3418 static int i40e_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd, 3419 u32 *rule_locs) 3420 { 3421 struct i40e_netdev_priv *np = netdev_priv(netdev); 3422 struct i40e_vsi *vsi = np->vsi; 3423 struct i40e_pf *pf = vsi->back; 3424 int ret = -EOPNOTSUPP; 3425 3426 switch (cmd->cmd) { 3427 case ETHTOOL_GRXRINGS: 3428 cmd->data = vsi->rss_size; 3429 ret = 0; 3430 break; 3431 case ETHTOOL_GRXFH: 3432 ret = i40e_get_rss_hash_opts(pf, cmd); 3433 break; 3434 case ETHTOOL_GRXCLSRLCNT: 3435 cmd->rule_cnt = pf->fdir_pf_active_filters; 3436 /* report total rule count */ 3437 cmd->data = i40e_get_fd_cnt_all(pf); 3438 ret = 0; 3439 break; 3440 case ETHTOOL_GRXCLSRULE: 3441 ret = i40e_get_ethtool_fdir_entry(pf, cmd); 3442 break; 3443 case ETHTOOL_GRXCLSRLALL: 3444 ret = i40e_get_ethtool_fdir_all(pf, cmd, rule_locs); 3445 break; 3446 default: 3447 break; 3448 } 3449 3450 return ret; 3451 } 3452 3453 /** 3454 * i40e_get_rss_hash_bits - Read RSS Hash bits from register 3455 * @nfc: pointer to user request 3456 * @i_setc: bits currently set 3457 * 3458 * Returns value of bits to be set per user request 3459 **/ 3460 static u64 i40e_get_rss_hash_bits(struct ethtool_rxnfc *nfc, u64 i_setc) 3461 { 3462 u64 i_set = i_setc; 3463 u64 src_l3 = 0, dst_l3 = 0; 3464 3465 if (nfc->data & RXH_L4_B_0_1) 3466 i_set |= I40E_L4_SRC_MASK; 3467 else 3468 i_set &= ~I40E_L4_SRC_MASK; 3469 if (nfc->data & RXH_L4_B_2_3) 3470 i_set |= I40E_L4_DST_MASK; 3471 else 3472 i_set &= ~I40E_L4_DST_MASK; 3473 3474 if (nfc->flow_type == TCP_V6_FLOW || nfc->flow_type == UDP_V6_FLOW) { 3475 src_l3 = I40E_L3_V6_SRC_MASK; 3476 dst_l3 = I40E_L3_V6_DST_MASK; 3477 } else if (nfc->flow_type == TCP_V4_FLOW || 3478 nfc->flow_type == UDP_V4_FLOW) { 3479 src_l3 = I40E_L3_SRC_MASK; 3480 dst_l3 = I40E_L3_DST_MASK; 3481 } else { 3482 /* Any other flow type are not supported here */ 3483 return i_set; 3484 } 3485 3486 if (nfc->data & RXH_IP_SRC) 3487 i_set |= src_l3; 3488 else 3489 i_set &= ~src_l3; 3490 if (nfc->data & RXH_IP_DST) 3491 i_set |= dst_l3; 3492 else 3493 i_set &= ~dst_l3; 3494 3495 return i_set; 3496 } 3497 3498 /** 3499 * i40e_set_rss_hash_opt - Enable/Disable flow types for RSS hash 3500 * @pf: pointer to the physical function struct 3501 * @nfc: ethtool rxnfc command 3502 * 3503 * Returns Success if the flow input set is supported. 3504 **/ 3505 static int i40e_set_rss_hash_opt(struct i40e_pf *pf, struct ethtool_rxnfc *nfc) 3506 { 3507 struct i40e_hw *hw = &pf->hw; 3508 u64 hena = (u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(0)) | 3509 ((u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(1)) << 32); 3510 u8 flow_pctype = 0; 3511 u64 i_set, i_setc; 3512 3513 if (pf->flags & I40E_FLAG_MFP_ENABLED) { 3514 dev_err(&pf->pdev->dev, 3515 "Change of RSS hash input set is not supported when MFP mode is enabled\n"); 3516 return -EOPNOTSUPP; 3517 } 3518 3519 /* RSS does not support anything other than hashing 3520 * to queues on src and dst IPs and ports 3521 */ 3522 if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST | 3523 RXH_L4_B_0_1 | RXH_L4_B_2_3)) 3524 return -EINVAL; 3525 3526 switch (nfc->flow_type) { 3527 case TCP_V4_FLOW: 3528 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_TCP; 3529 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE) 3530 hena |= 3531 BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_TCP_SYN_NO_ACK); 3532 break; 3533 case TCP_V6_FLOW: 3534 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_TCP; 3535 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE) 3536 hena |= 3537 BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_TCP_SYN_NO_ACK); 3538 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE) 3539 hena |= 3540 BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_TCP_SYN_NO_ACK); 3541 break; 3542 case UDP_V4_FLOW: 3543 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_UDP; 3544 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE) 3545 hena |= 3546 BIT_ULL(I40E_FILTER_PCTYPE_NONF_UNICAST_IPV4_UDP) | 3547 BIT_ULL(I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV4_UDP); 3548 3549 hena |= BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV4); 3550 break; 3551 case UDP_V6_FLOW: 3552 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_UDP; 3553 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE) 3554 hena |= 3555 BIT_ULL(I40E_FILTER_PCTYPE_NONF_UNICAST_IPV6_UDP) | 3556 BIT_ULL(I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV6_UDP); 3557 3558 hena |= BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV6); 3559 break; 3560 case AH_ESP_V4_FLOW: 3561 case AH_V4_FLOW: 3562 case ESP_V4_FLOW: 3563 case SCTP_V4_FLOW: 3564 if ((nfc->data & RXH_L4_B_0_1) || 3565 (nfc->data & RXH_L4_B_2_3)) 3566 return -EINVAL; 3567 hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_OTHER); 3568 break; 3569 case AH_ESP_V6_FLOW: 3570 case AH_V6_FLOW: 3571 case ESP_V6_FLOW: 3572 case SCTP_V6_FLOW: 3573 if ((nfc->data & RXH_L4_B_0_1) || 3574 (nfc->data & RXH_L4_B_2_3)) 3575 return -EINVAL; 3576 hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_OTHER); 3577 break; 3578 case IPV4_FLOW: 3579 hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_OTHER) | 3580 BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV4); 3581 break; 3582 case IPV6_FLOW: 3583 hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_OTHER) | 3584 BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV6); 3585 break; 3586 default: 3587 return -EINVAL; 3588 } 3589 3590 if (flow_pctype) { 3591 i_setc = (u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(0, 3592 flow_pctype)) | 3593 ((u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(1, 3594 flow_pctype)) << 32); 3595 i_set = i40e_get_rss_hash_bits(nfc, i_setc); 3596 i40e_write_rx_ctl(hw, I40E_GLQF_HASH_INSET(0, flow_pctype), 3597 (u32)i_set); 3598 i40e_write_rx_ctl(hw, I40E_GLQF_HASH_INSET(1, flow_pctype), 3599 (u32)(i_set >> 32)); 3600 hena |= BIT_ULL(flow_pctype); 3601 } 3602 3603 i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), (u32)hena); 3604 i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32)); 3605 i40e_flush(hw); 3606 3607 return 0; 3608 } 3609 3610 /** 3611 * i40e_update_ethtool_fdir_entry - Updates the fdir filter entry 3612 * @vsi: Pointer to the targeted VSI 3613 * @input: The filter to update or NULL to indicate deletion 3614 * @sw_idx: Software index to the filter 3615 * @cmd: The command to get or set Rx flow classification rules 3616 * 3617 * This function updates (or deletes) a Flow Director entry from 3618 * the hlist of the corresponding PF 3619 * 3620 * Returns 0 on success 3621 **/ 3622 static int i40e_update_ethtool_fdir_entry(struct i40e_vsi *vsi, 3623 struct i40e_fdir_filter *input, 3624 u16 sw_idx, 3625 struct ethtool_rxnfc *cmd) 3626 { 3627 struct i40e_fdir_filter *rule, *parent; 3628 struct i40e_pf *pf = vsi->back; 3629 struct hlist_node *node2; 3630 int err = -EINVAL; 3631 3632 parent = NULL; 3633 rule = NULL; 3634 3635 hlist_for_each_entry_safe(rule, node2, 3636 &pf->fdir_filter_list, fdir_node) { 3637 /* hash found, or no matching entry */ 3638 if (rule->fd_id >= sw_idx) 3639 break; 3640 parent = rule; 3641 } 3642 3643 /* if there is an old rule occupying our place remove it */ 3644 if (rule && (rule->fd_id == sw_idx)) { 3645 /* Remove this rule, since we're either deleting it, or 3646 * replacing it. 3647 */ 3648 err = i40e_add_del_fdir(vsi, rule, false); 3649 hlist_del(&rule->fdir_node); 3650 kfree(rule); 3651 pf->fdir_pf_active_filters--; 3652 } 3653 3654 /* If we weren't given an input, this is a delete, so just return the 3655 * error code indicating if there was an entry at the requested slot 3656 */ 3657 if (!input) 3658 return err; 3659 3660 /* Otherwise, install the new rule as requested */ 3661 INIT_HLIST_NODE(&input->fdir_node); 3662 3663 /* add filter to the list */ 3664 if (parent) 3665 hlist_add_behind(&input->fdir_node, &parent->fdir_node); 3666 else 3667 hlist_add_head(&input->fdir_node, 3668 &pf->fdir_filter_list); 3669 3670 /* update counts */ 3671 pf->fdir_pf_active_filters++; 3672 3673 return 0; 3674 } 3675 3676 /** 3677 * i40e_prune_flex_pit_list - Cleanup unused entries in FLX_PIT table 3678 * @pf: pointer to PF structure 3679 * 3680 * This function searches the list of filters and determines which FLX_PIT 3681 * entries are still required. It will prune any entries which are no longer 3682 * in use after the deletion. 3683 **/ 3684 static void i40e_prune_flex_pit_list(struct i40e_pf *pf) 3685 { 3686 struct i40e_flex_pit *entry, *tmp; 3687 struct i40e_fdir_filter *rule; 3688 3689 /* First, we'll check the l3 table */ 3690 list_for_each_entry_safe(entry, tmp, &pf->l3_flex_pit_list, list) { 3691 bool found = false; 3692 3693 hlist_for_each_entry(rule, &pf->fdir_filter_list, fdir_node) { 3694 if (rule->flow_type != IP_USER_FLOW) 3695 continue; 3696 if (rule->flex_filter && 3697 rule->flex_offset == entry->src_offset) { 3698 found = true; 3699 break; 3700 } 3701 } 3702 3703 /* If we didn't find the filter, then we can prune this entry 3704 * from the list. 3705 */ 3706 if (!found) { 3707 list_del(&entry->list); 3708 kfree(entry); 3709 } 3710 } 3711 3712 /* Followed by the L4 table */ 3713 list_for_each_entry_safe(entry, tmp, &pf->l4_flex_pit_list, list) { 3714 bool found = false; 3715 3716 hlist_for_each_entry(rule, &pf->fdir_filter_list, fdir_node) { 3717 /* Skip this filter if it's L3, since we already 3718 * checked those in the above loop 3719 */ 3720 if (rule->flow_type == IP_USER_FLOW) 3721 continue; 3722 if (rule->flex_filter && 3723 rule->flex_offset == entry->src_offset) { 3724 found = true; 3725 break; 3726 } 3727 } 3728 3729 /* If we didn't find the filter, then we can prune this entry 3730 * from the list. 3731 */ 3732 if (!found) { 3733 list_del(&entry->list); 3734 kfree(entry); 3735 } 3736 } 3737 } 3738 3739 /** 3740 * i40e_del_fdir_entry - Deletes a Flow Director filter entry 3741 * @vsi: Pointer to the targeted VSI 3742 * @cmd: The command to get or set Rx flow classification rules 3743 * 3744 * The function removes a Flow Director filter entry from the 3745 * hlist of the corresponding PF 3746 * 3747 * Returns 0 on success 3748 */ 3749 static int i40e_del_fdir_entry(struct i40e_vsi *vsi, 3750 struct ethtool_rxnfc *cmd) 3751 { 3752 struct ethtool_rx_flow_spec *fsp = 3753 (struct ethtool_rx_flow_spec *)&cmd->fs; 3754 struct i40e_pf *pf = vsi->back; 3755 int ret = 0; 3756 3757 if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) || 3758 test_bit(__I40E_RESET_INTR_RECEIVED, pf->state)) 3759 return -EBUSY; 3760 3761 if (test_bit(__I40E_FD_FLUSH_REQUESTED, pf->state)) 3762 return -EBUSY; 3763 3764 ret = i40e_update_ethtool_fdir_entry(vsi, NULL, fsp->location, cmd); 3765 3766 i40e_prune_flex_pit_list(pf); 3767 3768 i40e_fdir_check_and_reenable(pf); 3769 return ret; 3770 } 3771 3772 /** 3773 * i40e_unused_pit_index - Find an unused PIT index for given list 3774 * @pf: the PF data structure 3775 * 3776 * Find the first unused flexible PIT index entry. We search both the L3 and 3777 * L4 flexible PIT lists so that the returned index is unique and unused by 3778 * either currently programmed L3 or L4 filters. We use a bit field as storage 3779 * to track which indexes are already used. 3780 **/ 3781 static u8 i40e_unused_pit_index(struct i40e_pf *pf) 3782 { 3783 unsigned long available_index = 0xFF; 3784 struct i40e_flex_pit *entry; 3785 3786 /* We need to make sure that the new index isn't in use by either L3 3787 * or L4 filters so that IP_USER_FLOW filters can program both L3 and 3788 * L4 to use the same index. 3789 */ 3790 3791 list_for_each_entry(entry, &pf->l4_flex_pit_list, list) 3792 clear_bit(entry->pit_index, &available_index); 3793 3794 list_for_each_entry(entry, &pf->l3_flex_pit_list, list) 3795 clear_bit(entry->pit_index, &available_index); 3796 3797 return find_first_bit(&available_index, 8); 3798 } 3799 3800 /** 3801 * i40e_find_flex_offset - Find an existing flex src_offset 3802 * @flex_pit_list: L3 or L4 flex PIT list 3803 * @src_offset: new src_offset to find 3804 * 3805 * Searches the flex_pit_list for an existing offset. If no offset is 3806 * currently programmed, then this will return an ERR_PTR if there is no space 3807 * to add a new offset, otherwise it returns NULL. 3808 **/ 3809 static 3810 struct i40e_flex_pit *i40e_find_flex_offset(struct list_head *flex_pit_list, 3811 u16 src_offset) 3812 { 3813 struct i40e_flex_pit *entry; 3814 int size = 0; 3815 3816 /* Search for the src_offset first. If we find a matching entry 3817 * already programmed, we can simply re-use it. 3818 */ 3819 list_for_each_entry(entry, flex_pit_list, list) { 3820 size++; 3821 if (entry->src_offset == src_offset) 3822 return entry; 3823 } 3824 3825 /* If we haven't found an entry yet, then the provided src offset has 3826 * not yet been programmed. We will program the src offset later on, 3827 * but we need to indicate whether there is enough space to do so 3828 * here. We'll make use of ERR_PTR for this purpose. 3829 */ 3830 if (size >= I40E_FLEX_PIT_TABLE_SIZE) 3831 return ERR_PTR(-ENOSPC); 3832 3833 return NULL; 3834 } 3835 3836 /** 3837 * i40e_add_flex_offset - Add src_offset to flex PIT table list 3838 * @flex_pit_list: L3 or L4 flex PIT list 3839 * @src_offset: new src_offset to add 3840 * @pit_index: the PIT index to program 3841 * 3842 * This function programs the new src_offset to the list. It is expected that 3843 * i40e_find_flex_offset has already been tried and returned NULL, indicating 3844 * that this offset is not programmed, and that the list has enough space to 3845 * store another offset. 3846 * 3847 * Returns 0 on success, and negative value on error. 3848 **/ 3849 static int i40e_add_flex_offset(struct list_head *flex_pit_list, 3850 u16 src_offset, 3851 u8 pit_index) 3852 { 3853 struct i40e_flex_pit *new_pit, *entry; 3854 3855 new_pit = kzalloc(sizeof(*entry), GFP_KERNEL); 3856 if (!new_pit) 3857 return -ENOMEM; 3858 3859 new_pit->src_offset = src_offset; 3860 new_pit->pit_index = pit_index; 3861 3862 /* We need to insert this item such that the list is sorted by 3863 * src_offset in ascending order. 3864 */ 3865 list_for_each_entry(entry, flex_pit_list, list) { 3866 if (new_pit->src_offset < entry->src_offset) { 3867 list_add_tail(&new_pit->list, &entry->list); 3868 return 0; 3869 } 3870 3871 /* If we found an entry with our offset already programmed we 3872 * can simply return here, after freeing the memory. However, 3873 * if the pit_index does not match we need to report an error. 3874 */ 3875 if (new_pit->src_offset == entry->src_offset) { 3876 int err = 0; 3877 3878 /* If the PIT index is not the same we can't re-use 3879 * the entry, so we must report an error. 3880 */ 3881 if (new_pit->pit_index != entry->pit_index) 3882 err = -EINVAL; 3883 3884 kfree(new_pit); 3885 return err; 3886 } 3887 } 3888 3889 /* If we reached here, then we haven't yet added the item. This means 3890 * that we should add the item at the end of the list. 3891 */ 3892 list_add_tail(&new_pit->list, flex_pit_list); 3893 return 0; 3894 } 3895 3896 /** 3897 * __i40e_reprogram_flex_pit - Re-program specific FLX_PIT table 3898 * @pf: Pointer to the PF structure 3899 * @flex_pit_list: list of flexible src offsets in use 3900 * @flex_pit_start: index to first entry for this section of the table 3901 * 3902 * In order to handle flexible data, the hardware uses a table of values 3903 * called the FLX_PIT table. This table is used to indicate which sections of 3904 * the input correspond to what PIT index values. Unfortunately, hardware is 3905 * very restrictive about programming this table. Entries must be ordered by 3906 * src_offset in ascending order, without duplicates. Additionally, unused 3907 * entries must be set to the unused index value, and must have valid size and 3908 * length according to the src_offset ordering. 3909 * 3910 * This function will reprogram the FLX_PIT register from a book-keeping 3911 * structure that we guarantee is already ordered correctly, and has no more 3912 * than 3 entries. 3913 * 3914 * To make things easier, we only support flexible values of one word length, 3915 * rather than allowing variable length flexible values. 3916 **/ 3917 static void __i40e_reprogram_flex_pit(struct i40e_pf *pf, 3918 struct list_head *flex_pit_list, 3919 int flex_pit_start) 3920 { 3921 struct i40e_flex_pit *entry = NULL; 3922 u16 last_offset = 0; 3923 int i = 0, j = 0; 3924 3925 /* First, loop over the list of flex PIT entries, and reprogram the 3926 * registers. 3927 */ 3928 list_for_each_entry(entry, flex_pit_list, list) { 3929 /* We have to be careful when programming values for the 3930 * largest SRC_OFFSET value. It is possible that adding 3931 * additional empty values at the end would overflow the space 3932 * for the SRC_OFFSET in the FLX_PIT register. To avoid this, 3933 * we check here and add the empty values prior to adding the 3934 * largest value. 3935 * 3936 * To determine this, we will use a loop from i+1 to 3, which 3937 * will determine whether the unused entries would have valid 3938 * SRC_OFFSET. Note that there cannot be extra entries past 3939 * this value, because the only valid values would have been 3940 * larger than I40E_MAX_FLEX_SRC_OFFSET, and thus would not 3941 * have been added to the list in the first place. 3942 */ 3943 for (j = i + 1; j < 3; j++) { 3944 u16 offset = entry->src_offset + j; 3945 int index = flex_pit_start + i; 3946 u32 value = I40E_FLEX_PREP_VAL(I40E_FLEX_DEST_UNUSED, 3947 1, 3948 offset - 3); 3949 3950 if (offset > I40E_MAX_FLEX_SRC_OFFSET) { 3951 i40e_write_rx_ctl(&pf->hw, 3952 I40E_PRTQF_FLX_PIT(index), 3953 value); 3954 i++; 3955 } 3956 } 3957 3958 /* Now, we can program the actual value into the table */ 3959 i40e_write_rx_ctl(&pf->hw, 3960 I40E_PRTQF_FLX_PIT(flex_pit_start + i), 3961 I40E_FLEX_PREP_VAL(entry->pit_index + 50, 3962 1, 3963 entry->src_offset)); 3964 i++; 3965 } 3966 3967 /* In order to program the last entries in the table, we need to 3968 * determine the valid offset. If the list is empty, we'll just start 3969 * with 0. Otherwise, we'll start with the last item offset and add 1. 3970 * This ensures that all entries have valid sizes. If we don't do this 3971 * correctly, the hardware will disable flexible field parsing. 3972 */ 3973 if (!list_empty(flex_pit_list)) 3974 last_offset = list_prev_entry(entry, list)->src_offset + 1; 3975 3976 for (; i < 3; i++, last_offset++) { 3977 i40e_write_rx_ctl(&pf->hw, 3978 I40E_PRTQF_FLX_PIT(flex_pit_start + i), 3979 I40E_FLEX_PREP_VAL(I40E_FLEX_DEST_UNUSED, 3980 1, 3981 last_offset)); 3982 } 3983 } 3984 3985 /** 3986 * i40e_reprogram_flex_pit - Reprogram all FLX_PIT tables after input set change 3987 * @pf: pointer to the PF structure 3988 * 3989 * This function reprograms both the L3 and L4 FLX_PIT tables. See the 3990 * internal helper function for implementation details. 3991 **/ 3992 static void i40e_reprogram_flex_pit(struct i40e_pf *pf) 3993 { 3994 __i40e_reprogram_flex_pit(pf, &pf->l3_flex_pit_list, 3995 I40E_FLEX_PIT_IDX_START_L3); 3996 3997 __i40e_reprogram_flex_pit(pf, &pf->l4_flex_pit_list, 3998 I40E_FLEX_PIT_IDX_START_L4); 3999 4000 /* We also need to program the L3 and L4 GLQF ORT register */ 4001 i40e_write_rx_ctl(&pf->hw, 4002 I40E_GLQF_ORT(I40E_L3_GLQF_ORT_IDX), 4003 I40E_ORT_PREP_VAL(I40E_FLEX_PIT_IDX_START_L3, 4004 3, 1)); 4005 4006 i40e_write_rx_ctl(&pf->hw, 4007 I40E_GLQF_ORT(I40E_L4_GLQF_ORT_IDX), 4008 I40E_ORT_PREP_VAL(I40E_FLEX_PIT_IDX_START_L4, 4009 3, 1)); 4010 } 4011 4012 /** 4013 * i40e_flow_str - Converts a flow_type into a human readable string 4014 * @fsp: the flow specification 4015 * 4016 * Currently only flow types we support are included here, and the string 4017 * value attempts to match what ethtool would use to configure this flow type. 4018 **/ 4019 static const char *i40e_flow_str(struct ethtool_rx_flow_spec *fsp) 4020 { 4021 switch (fsp->flow_type & ~FLOW_EXT) { 4022 case TCP_V4_FLOW: 4023 return "tcp4"; 4024 case UDP_V4_FLOW: 4025 return "udp4"; 4026 case SCTP_V4_FLOW: 4027 return "sctp4"; 4028 case IP_USER_FLOW: 4029 return "ip4"; 4030 case TCP_V6_FLOW: 4031 return "tcp6"; 4032 case UDP_V6_FLOW: 4033 return "udp6"; 4034 case SCTP_V6_FLOW: 4035 return "sctp6"; 4036 case IPV6_USER_FLOW: 4037 return "ip6"; 4038 default: 4039 return "unknown"; 4040 } 4041 } 4042 4043 /** 4044 * i40e_pit_index_to_mask - Return the FLEX mask for a given PIT index 4045 * @pit_index: PIT index to convert 4046 * 4047 * Returns the mask for a given PIT index. Will return 0 if the pit_index is 4048 * of range. 4049 **/ 4050 static u64 i40e_pit_index_to_mask(int pit_index) 4051 { 4052 switch (pit_index) { 4053 case 0: 4054 return I40E_FLEX_50_MASK; 4055 case 1: 4056 return I40E_FLEX_51_MASK; 4057 case 2: 4058 return I40E_FLEX_52_MASK; 4059 case 3: 4060 return I40E_FLEX_53_MASK; 4061 case 4: 4062 return I40E_FLEX_54_MASK; 4063 case 5: 4064 return I40E_FLEX_55_MASK; 4065 case 6: 4066 return I40E_FLEX_56_MASK; 4067 case 7: 4068 return I40E_FLEX_57_MASK; 4069 default: 4070 return 0; 4071 } 4072 } 4073 4074 /** 4075 * i40e_print_input_set - Show changes between two input sets 4076 * @vsi: the vsi being configured 4077 * @old: the old input set 4078 * @new: the new input set 4079 * 4080 * Print the difference between old and new input sets by showing which series 4081 * of words are toggled on or off. Only displays the bits we actually support 4082 * changing. 4083 **/ 4084 static void i40e_print_input_set(struct i40e_vsi *vsi, u64 old, u64 new) 4085 { 4086 struct i40e_pf *pf = vsi->back; 4087 bool old_value, new_value; 4088 int i; 4089 4090 old_value = !!(old & I40E_L3_SRC_MASK); 4091 new_value = !!(new & I40E_L3_SRC_MASK); 4092 if (old_value != new_value) 4093 netif_info(pf, drv, vsi->netdev, "L3 source address: %s -> %s\n", 4094 old_value ? "ON" : "OFF", 4095 new_value ? "ON" : "OFF"); 4096 4097 old_value = !!(old & I40E_L3_DST_MASK); 4098 new_value = !!(new & I40E_L3_DST_MASK); 4099 if (old_value != new_value) 4100 netif_info(pf, drv, vsi->netdev, "L3 destination address: %s -> %s\n", 4101 old_value ? "ON" : "OFF", 4102 new_value ? "ON" : "OFF"); 4103 4104 old_value = !!(old & I40E_L4_SRC_MASK); 4105 new_value = !!(new & I40E_L4_SRC_MASK); 4106 if (old_value != new_value) 4107 netif_info(pf, drv, vsi->netdev, "L4 source port: %s -> %s\n", 4108 old_value ? "ON" : "OFF", 4109 new_value ? "ON" : "OFF"); 4110 4111 old_value = !!(old & I40E_L4_DST_MASK); 4112 new_value = !!(new & I40E_L4_DST_MASK); 4113 if (old_value != new_value) 4114 netif_info(pf, drv, vsi->netdev, "L4 destination port: %s -> %s\n", 4115 old_value ? "ON" : "OFF", 4116 new_value ? "ON" : "OFF"); 4117 4118 old_value = !!(old & I40E_VERIFY_TAG_MASK); 4119 new_value = !!(new & I40E_VERIFY_TAG_MASK); 4120 if (old_value != new_value) 4121 netif_info(pf, drv, vsi->netdev, "SCTP verification tag: %s -> %s\n", 4122 old_value ? "ON" : "OFF", 4123 new_value ? "ON" : "OFF"); 4124 4125 /* Show change of flexible filter entries */ 4126 for (i = 0; i < I40E_FLEX_INDEX_ENTRIES; i++) { 4127 u64 flex_mask = i40e_pit_index_to_mask(i); 4128 4129 old_value = !!(old & flex_mask); 4130 new_value = !!(new & flex_mask); 4131 if (old_value != new_value) 4132 netif_info(pf, drv, vsi->netdev, "FLEX index %d: %s -> %s\n", 4133 i, 4134 old_value ? "ON" : "OFF", 4135 new_value ? "ON" : "OFF"); 4136 } 4137 4138 netif_info(pf, drv, vsi->netdev, " Current input set: %0llx\n", 4139 old); 4140 netif_info(pf, drv, vsi->netdev, "Requested input set: %0llx\n", 4141 new); 4142 } 4143 4144 /** 4145 * i40e_check_fdir_input_set - Check that a given rx_flow_spec mask is valid 4146 * @vsi: pointer to the targeted VSI 4147 * @fsp: pointer to Rx flow specification 4148 * @userdef: userdefined data from flow specification 4149 * 4150 * Ensures that a given ethtool_rx_flow_spec has a valid mask. Some support 4151 * for partial matches exists with a few limitations. First, hardware only 4152 * supports masking by word boundary (2 bytes) and not per individual bit. 4153 * Second, hardware is limited to using one mask for a flow type and cannot 4154 * use a separate mask for each filter. 4155 * 4156 * To support these limitations, if we already have a configured filter for 4157 * the specified type, this function enforces that new filters of the type 4158 * match the configured input set. Otherwise, if we do not have a filter of 4159 * the specified type, we allow the input set to be updated to match the 4160 * desired filter. 4161 * 4162 * To help ensure that administrators understand why filters weren't displayed 4163 * as supported, we print a diagnostic message displaying how the input set 4164 * would change and warning to delete the preexisting filters if required. 4165 * 4166 * Returns 0 on successful input set match, and a negative return code on 4167 * failure. 4168 **/ 4169 static int i40e_check_fdir_input_set(struct i40e_vsi *vsi, 4170 struct ethtool_rx_flow_spec *fsp, 4171 struct i40e_rx_flow_userdef *userdef) 4172 { 4173 static const __be32 ipv6_full_mask[4] = {cpu_to_be32(0xffffffff), 4174 cpu_to_be32(0xffffffff), cpu_to_be32(0xffffffff), 4175 cpu_to_be32(0xffffffff)}; 4176 struct ethtool_tcpip6_spec *tcp_ip6_spec; 4177 struct ethtool_usrip6_spec *usr_ip6_spec; 4178 struct ethtool_tcpip4_spec *tcp_ip4_spec; 4179 struct ethtool_usrip4_spec *usr_ip4_spec; 4180 struct i40e_pf *pf = vsi->back; 4181 u64 current_mask, new_mask; 4182 bool new_flex_offset = false; 4183 bool flex_l3 = false; 4184 u16 *fdir_filter_count; 4185 u16 index, src_offset = 0; 4186 u8 pit_index = 0; 4187 int err; 4188 4189 switch (fsp->flow_type & ~FLOW_EXT) { 4190 case SCTP_V4_FLOW: 4191 index = I40E_FILTER_PCTYPE_NONF_IPV4_SCTP; 4192 fdir_filter_count = &pf->fd_sctp4_filter_cnt; 4193 break; 4194 case TCP_V4_FLOW: 4195 index = I40E_FILTER_PCTYPE_NONF_IPV4_TCP; 4196 fdir_filter_count = &pf->fd_tcp4_filter_cnt; 4197 break; 4198 case UDP_V4_FLOW: 4199 index = I40E_FILTER_PCTYPE_NONF_IPV4_UDP; 4200 fdir_filter_count = &pf->fd_udp4_filter_cnt; 4201 break; 4202 case SCTP_V6_FLOW: 4203 index = I40E_FILTER_PCTYPE_NONF_IPV6_SCTP; 4204 fdir_filter_count = &pf->fd_sctp6_filter_cnt; 4205 break; 4206 case TCP_V6_FLOW: 4207 index = I40E_FILTER_PCTYPE_NONF_IPV6_TCP; 4208 fdir_filter_count = &pf->fd_tcp6_filter_cnt; 4209 break; 4210 case UDP_V6_FLOW: 4211 index = I40E_FILTER_PCTYPE_NONF_IPV6_UDP; 4212 fdir_filter_count = &pf->fd_udp6_filter_cnt; 4213 break; 4214 case IP_USER_FLOW: 4215 index = I40E_FILTER_PCTYPE_NONF_IPV4_OTHER; 4216 fdir_filter_count = &pf->fd_ip4_filter_cnt; 4217 flex_l3 = true; 4218 break; 4219 case IPV6_USER_FLOW: 4220 index = I40E_FILTER_PCTYPE_NONF_IPV6_OTHER; 4221 fdir_filter_count = &pf->fd_ip6_filter_cnt; 4222 flex_l3 = true; 4223 break; 4224 default: 4225 return -EOPNOTSUPP; 4226 } 4227 4228 /* Read the current input set from register memory. */ 4229 current_mask = i40e_read_fd_input_set(pf, index); 4230 new_mask = current_mask; 4231 4232 /* Determine, if any, the required changes to the input set in order 4233 * to support the provided mask. 4234 * 4235 * Hardware only supports masking at word (2 byte) granularity and does 4236 * not support full bitwise masking. This implementation simplifies 4237 * even further and only supports fully enabled or fully disabled 4238 * masks for each field, even though we could split the ip4src and 4239 * ip4dst fields. 4240 */ 4241 switch (fsp->flow_type & ~FLOW_EXT) { 4242 case SCTP_V4_FLOW: 4243 new_mask &= ~I40E_VERIFY_TAG_MASK; 4244 fallthrough; 4245 case TCP_V4_FLOW: 4246 case UDP_V4_FLOW: 4247 tcp_ip4_spec = &fsp->m_u.tcp_ip4_spec; 4248 4249 /* IPv4 source address */ 4250 if (tcp_ip4_spec->ip4src == htonl(0xFFFFFFFF)) 4251 new_mask |= I40E_L3_SRC_MASK; 4252 else if (!tcp_ip4_spec->ip4src) 4253 new_mask &= ~I40E_L3_SRC_MASK; 4254 else 4255 return -EOPNOTSUPP; 4256 4257 /* IPv4 destination address */ 4258 if (tcp_ip4_spec->ip4dst == htonl(0xFFFFFFFF)) 4259 new_mask |= I40E_L3_DST_MASK; 4260 else if (!tcp_ip4_spec->ip4dst) 4261 new_mask &= ~I40E_L3_DST_MASK; 4262 else 4263 return -EOPNOTSUPP; 4264 4265 /* L4 source port */ 4266 if (tcp_ip4_spec->psrc == htons(0xFFFF)) 4267 new_mask |= I40E_L4_SRC_MASK; 4268 else if (!tcp_ip4_spec->psrc) 4269 new_mask &= ~I40E_L4_SRC_MASK; 4270 else 4271 return -EOPNOTSUPP; 4272 4273 /* L4 destination port */ 4274 if (tcp_ip4_spec->pdst == htons(0xFFFF)) 4275 new_mask |= I40E_L4_DST_MASK; 4276 else if (!tcp_ip4_spec->pdst) 4277 new_mask &= ~I40E_L4_DST_MASK; 4278 else 4279 return -EOPNOTSUPP; 4280 4281 /* Filtering on Type of Service is not supported. */ 4282 if (tcp_ip4_spec->tos) 4283 return -EOPNOTSUPP; 4284 4285 break; 4286 case SCTP_V6_FLOW: 4287 new_mask &= ~I40E_VERIFY_TAG_MASK; 4288 fallthrough; 4289 case TCP_V6_FLOW: 4290 case UDP_V6_FLOW: 4291 tcp_ip6_spec = &fsp->m_u.tcp_ip6_spec; 4292 4293 /* Check if user provided IPv6 source address. */ 4294 if (ipv6_addr_equal((struct in6_addr *)&tcp_ip6_spec->ip6src, 4295 (struct in6_addr *)&ipv6_full_mask)) 4296 new_mask |= I40E_L3_V6_SRC_MASK; 4297 else if (ipv6_addr_any((struct in6_addr *) 4298 &tcp_ip6_spec->ip6src)) 4299 new_mask &= ~I40E_L3_V6_SRC_MASK; 4300 else 4301 return -EOPNOTSUPP; 4302 4303 /* Check if user provided destination address. */ 4304 if (ipv6_addr_equal((struct in6_addr *)&tcp_ip6_spec->ip6dst, 4305 (struct in6_addr *)&ipv6_full_mask)) 4306 new_mask |= I40E_L3_V6_DST_MASK; 4307 else if (ipv6_addr_any((struct in6_addr *) 4308 &tcp_ip6_spec->ip6dst)) 4309 new_mask &= ~I40E_L3_V6_DST_MASK; 4310 else 4311 return -EOPNOTSUPP; 4312 4313 /* L4 source port */ 4314 if (tcp_ip6_spec->psrc == htons(0xFFFF)) 4315 new_mask |= I40E_L4_SRC_MASK; 4316 else if (!tcp_ip6_spec->psrc) 4317 new_mask &= ~I40E_L4_SRC_MASK; 4318 else 4319 return -EOPNOTSUPP; 4320 4321 /* L4 destination port */ 4322 if (tcp_ip6_spec->pdst == htons(0xFFFF)) 4323 new_mask |= I40E_L4_DST_MASK; 4324 else if (!tcp_ip6_spec->pdst) 4325 new_mask &= ~I40E_L4_DST_MASK; 4326 else 4327 return -EOPNOTSUPP; 4328 4329 /* Filtering on Traffic Classes is not supported. */ 4330 if (tcp_ip6_spec->tclass) 4331 return -EOPNOTSUPP; 4332 break; 4333 case IP_USER_FLOW: 4334 usr_ip4_spec = &fsp->m_u.usr_ip4_spec; 4335 4336 /* IPv4 source address */ 4337 if (usr_ip4_spec->ip4src == htonl(0xFFFFFFFF)) 4338 new_mask |= I40E_L3_SRC_MASK; 4339 else if (!usr_ip4_spec->ip4src) 4340 new_mask &= ~I40E_L3_SRC_MASK; 4341 else 4342 return -EOPNOTSUPP; 4343 4344 /* IPv4 destination address */ 4345 if (usr_ip4_spec->ip4dst == htonl(0xFFFFFFFF)) 4346 new_mask |= I40E_L3_DST_MASK; 4347 else if (!usr_ip4_spec->ip4dst) 4348 new_mask &= ~I40E_L3_DST_MASK; 4349 else 4350 return -EOPNOTSUPP; 4351 4352 /* First 4 bytes of L4 header */ 4353 if (usr_ip4_spec->l4_4_bytes == htonl(0xFFFFFFFF)) 4354 new_mask |= I40E_L4_SRC_MASK | I40E_L4_DST_MASK; 4355 else if (!usr_ip4_spec->l4_4_bytes) 4356 new_mask &= ~(I40E_L4_SRC_MASK | I40E_L4_DST_MASK); 4357 else 4358 return -EOPNOTSUPP; 4359 4360 /* Filtering on Type of Service is not supported. */ 4361 if (usr_ip4_spec->tos) 4362 return -EOPNOTSUPP; 4363 4364 /* Filtering on IP version is not supported */ 4365 if (usr_ip4_spec->ip_ver) 4366 return -EINVAL; 4367 4368 /* Filtering on L4 protocol is not supported */ 4369 if (usr_ip4_spec->proto) 4370 return -EINVAL; 4371 4372 break; 4373 case IPV6_USER_FLOW: 4374 usr_ip6_spec = &fsp->m_u.usr_ip6_spec; 4375 4376 /* Check if user provided IPv6 source address. */ 4377 if (ipv6_addr_equal((struct in6_addr *)&usr_ip6_spec->ip6src, 4378 (struct in6_addr *)&ipv6_full_mask)) 4379 new_mask |= I40E_L3_V6_SRC_MASK; 4380 else if (ipv6_addr_any((struct in6_addr *) 4381 &usr_ip6_spec->ip6src)) 4382 new_mask &= ~I40E_L3_V6_SRC_MASK; 4383 else 4384 return -EOPNOTSUPP; 4385 4386 /* Check if user provided destination address. */ 4387 if (ipv6_addr_equal((struct in6_addr *)&usr_ip6_spec->ip6dst, 4388 (struct in6_addr *)&ipv6_full_mask)) 4389 new_mask |= I40E_L3_V6_DST_MASK; 4390 else if (ipv6_addr_any((struct in6_addr *) 4391 &usr_ip6_spec->ip6src)) 4392 new_mask &= ~I40E_L3_V6_DST_MASK; 4393 else 4394 return -EOPNOTSUPP; 4395 4396 if (usr_ip6_spec->l4_4_bytes == htonl(0xFFFFFFFF)) 4397 new_mask |= I40E_L4_SRC_MASK | I40E_L4_DST_MASK; 4398 else if (!usr_ip6_spec->l4_4_bytes) 4399 new_mask &= ~(I40E_L4_SRC_MASK | I40E_L4_DST_MASK); 4400 else 4401 return -EOPNOTSUPP; 4402 4403 /* Filtering on Traffic class is not supported. */ 4404 if (usr_ip6_spec->tclass) 4405 return -EOPNOTSUPP; 4406 4407 /* Filtering on L4 protocol is not supported */ 4408 if (usr_ip6_spec->l4_proto) 4409 return -EINVAL; 4410 4411 break; 4412 default: 4413 return -EOPNOTSUPP; 4414 } 4415 4416 if (fsp->flow_type & FLOW_EXT) { 4417 /* Allow only 802.1Q and no etype defined, as 4418 * later it's modified to 0x8100 4419 */ 4420 if (fsp->h_ext.vlan_etype != htons(ETH_P_8021Q) && 4421 fsp->h_ext.vlan_etype != 0) 4422 return -EOPNOTSUPP; 4423 if (fsp->m_ext.vlan_tci == htons(0xFFFF)) 4424 new_mask |= I40E_VLAN_SRC_MASK; 4425 else 4426 new_mask &= ~I40E_VLAN_SRC_MASK; 4427 } 4428 4429 /* First, clear all flexible filter entries */ 4430 new_mask &= ~I40E_FLEX_INPUT_MASK; 4431 4432 /* If we have a flexible filter, try to add this offset to the correct 4433 * flexible filter PIT list. Once finished, we can update the mask. 4434 * If the src_offset changed, we will get a new mask value which will 4435 * trigger an input set change. 4436 */ 4437 if (userdef->flex_filter) { 4438 struct i40e_flex_pit *l3_flex_pit = NULL, *flex_pit = NULL; 4439 4440 /* Flexible offset must be even, since the flexible payload 4441 * must be aligned on 2-byte boundary. 4442 */ 4443 if (userdef->flex_offset & 0x1) { 4444 dev_warn(&pf->pdev->dev, 4445 "Flexible data offset must be 2-byte aligned\n"); 4446 return -EINVAL; 4447 } 4448 4449 src_offset = userdef->flex_offset >> 1; 4450 4451 /* FLX_PIT source offset value is only so large */ 4452 if (src_offset > I40E_MAX_FLEX_SRC_OFFSET) { 4453 dev_warn(&pf->pdev->dev, 4454 "Flexible data must reside within first 64 bytes of the packet payload\n"); 4455 return -EINVAL; 4456 } 4457 4458 /* See if this offset has already been programmed. If we get 4459 * an ERR_PTR, then the filter is not safe to add. Otherwise, 4460 * if we get a NULL pointer, this means we will need to add 4461 * the offset. 4462 */ 4463 flex_pit = i40e_find_flex_offset(&pf->l4_flex_pit_list, 4464 src_offset); 4465 if (IS_ERR(flex_pit)) 4466 return PTR_ERR(flex_pit); 4467 4468 /* IP_USER_FLOW filters match both L4 (ICMP) and L3 (unknown) 4469 * packet types, and thus we need to program both L3 and L4 4470 * flexible values. These must have identical flexible index, 4471 * as otherwise we can't correctly program the input set. So 4472 * we'll find both an L3 and L4 index and make sure they are 4473 * the same. 4474 */ 4475 if (flex_l3) { 4476 l3_flex_pit = 4477 i40e_find_flex_offset(&pf->l3_flex_pit_list, 4478 src_offset); 4479 if (IS_ERR(l3_flex_pit)) 4480 return PTR_ERR(l3_flex_pit); 4481 4482 if (flex_pit) { 4483 /* If we already had a matching L4 entry, we 4484 * need to make sure that the L3 entry we 4485 * obtained uses the same index. 4486 */ 4487 if (l3_flex_pit) { 4488 if (l3_flex_pit->pit_index != 4489 flex_pit->pit_index) { 4490 return -EINVAL; 4491 } 4492 } else { 4493 new_flex_offset = true; 4494 } 4495 } else { 4496 flex_pit = l3_flex_pit; 4497 } 4498 } 4499 4500 /* If we didn't find an existing flex offset, we need to 4501 * program a new one. However, we don't immediately program it 4502 * here because we will wait to program until after we check 4503 * that it is safe to change the input set. 4504 */ 4505 if (!flex_pit) { 4506 new_flex_offset = true; 4507 pit_index = i40e_unused_pit_index(pf); 4508 } else { 4509 pit_index = flex_pit->pit_index; 4510 } 4511 4512 /* Update the mask with the new offset */ 4513 new_mask |= i40e_pit_index_to_mask(pit_index); 4514 } 4515 4516 /* If the mask and flexible filter offsets for this filter match the 4517 * currently programmed values we don't need any input set change, so 4518 * this filter is safe to install. 4519 */ 4520 if (new_mask == current_mask && !new_flex_offset) 4521 return 0; 4522 4523 netif_info(pf, drv, vsi->netdev, "Input set change requested for %s flows:\n", 4524 i40e_flow_str(fsp)); 4525 i40e_print_input_set(vsi, current_mask, new_mask); 4526 if (new_flex_offset) { 4527 netif_info(pf, drv, vsi->netdev, "FLEX index %d: Offset -> %d", 4528 pit_index, src_offset); 4529 } 4530 4531 /* Hardware input sets are global across multiple ports, so even the 4532 * main port cannot change them when in MFP mode as this would impact 4533 * any filters on the other ports. 4534 */ 4535 if (pf->flags & I40E_FLAG_MFP_ENABLED) { 4536 netif_err(pf, drv, vsi->netdev, "Cannot change Flow Director input sets while MFP is enabled\n"); 4537 return -EOPNOTSUPP; 4538 } 4539 4540 /* This filter requires us to update the input set. However, hardware 4541 * only supports one input set per flow type, and does not support 4542 * separate masks for each filter. This means that we can only support 4543 * a single mask for all filters of a specific type. 4544 * 4545 * If we have preexisting filters, they obviously depend on the 4546 * current programmed input set. Display a diagnostic message in this 4547 * case explaining why the filter could not be accepted. 4548 */ 4549 if (*fdir_filter_count) { 4550 netif_err(pf, drv, vsi->netdev, "Cannot change input set for %s flows until %d preexisting filters are removed\n", 4551 i40e_flow_str(fsp), 4552 *fdir_filter_count); 4553 return -EOPNOTSUPP; 4554 } 4555 4556 i40e_write_fd_input_set(pf, index, new_mask); 4557 4558 /* IP_USER_FLOW filters match both IPv4/Other and IPv4/Fragmented 4559 * frames. If we're programming the input set for IPv4/Other, we also 4560 * need to program the IPv4/Fragmented input set. Since we don't have 4561 * separate support, we'll always assume and enforce that the two flow 4562 * types must have matching input sets. 4563 */ 4564 if (index == I40E_FILTER_PCTYPE_NONF_IPV4_OTHER) 4565 i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_FRAG_IPV4, 4566 new_mask); 4567 4568 /* Add the new offset and update table, if necessary */ 4569 if (new_flex_offset) { 4570 err = i40e_add_flex_offset(&pf->l4_flex_pit_list, src_offset, 4571 pit_index); 4572 if (err) 4573 return err; 4574 4575 if (flex_l3) { 4576 err = i40e_add_flex_offset(&pf->l3_flex_pit_list, 4577 src_offset, 4578 pit_index); 4579 if (err) 4580 return err; 4581 } 4582 4583 i40e_reprogram_flex_pit(pf); 4584 } 4585 4586 return 0; 4587 } 4588 4589 /** 4590 * i40e_match_fdir_filter - Return true of two filters match 4591 * @a: pointer to filter struct 4592 * @b: pointer to filter struct 4593 * 4594 * Returns true if the two filters match exactly the same criteria. I.e. they 4595 * match the same flow type and have the same parameters. We don't need to 4596 * check any input-set since all filters of the same flow type must use the 4597 * same input set. 4598 **/ 4599 static bool i40e_match_fdir_filter(struct i40e_fdir_filter *a, 4600 struct i40e_fdir_filter *b) 4601 { 4602 /* The filters do not much if any of these criteria differ. */ 4603 if (a->dst_ip != b->dst_ip || 4604 a->src_ip != b->src_ip || 4605 a->dst_port != b->dst_port || 4606 a->src_port != b->src_port || 4607 a->flow_type != b->flow_type || 4608 a->ipl4_proto != b->ipl4_proto || 4609 a->vlan_tag != b->vlan_tag || 4610 a->vlan_etype != b->vlan_etype) 4611 return false; 4612 4613 return true; 4614 } 4615 4616 /** 4617 * i40e_disallow_matching_filters - Check that new filters differ 4618 * @vsi: pointer to the targeted VSI 4619 * @input: new filter to check 4620 * 4621 * Due to hardware limitations, it is not possible for two filters that match 4622 * similar criteria to be programmed at the same time. This is true for a few 4623 * reasons: 4624 * 4625 * (a) all filters matching a particular flow type must use the same input 4626 * set, that is they must match the same criteria. 4627 * (b) different flow types will never match the same packet, as the flow type 4628 * is decided by hardware before checking which rules apply. 4629 * (c) hardware has no way to distinguish which order filters apply in. 4630 * 4631 * Due to this, we can't really support using the location data to order 4632 * filters in the hardware parsing. It is technically possible for the user to 4633 * request two filters matching the same criteria but which select different 4634 * queues. In this case, rather than keep both filters in the list, we reject 4635 * the 2nd filter when the user requests adding it. 4636 * 4637 * This avoids needing to track location for programming the filter to 4638 * hardware, and ensures that we avoid some strange scenarios involving 4639 * deleting filters which match the same criteria. 4640 **/ 4641 static int i40e_disallow_matching_filters(struct i40e_vsi *vsi, 4642 struct i40e_fdir_filter *input) 4643 { 4644 struct i40e_pf *pf = vsi->back; 4645 struct i40e_fdir_filter *rule; 4646 struct hlist_node *node2; 4647 4648 /* Loop through every filter, and check that it doesn't match */ 4649 hlist_for_each_entry_safe(rule, node2, 4650 &pf->fdir_filter_list, fdir_node) { 4651 /* Don't check the filters match if they share the same fd_id, 4652 * since the new filter is actually just updating the target 4653 * of the old filter. 4654 */ 4655 if (rule->fd_id == input->fd_id) 4656 continue; 4657 4658 /* If any filters match, then print a warning message to the 4659 * kernel message buffer and bail out. 4660 */ 4661 if (i40e_match_fdir_filter(rule, input)) { 4662 dev_warn(&pf->pdev->dev, 4663 "Existing user defined filter %d already matches this flow.\n", 4664 rule->fd_id); 4665 return -EINVAL; 4666 } 4667 } 4668 4669 return 0; 4670 } 4671 4672 /** 4673 * i40e_add_fdir_ethtool - Add/Remove Flow Director filters 4674 * @vsi: pointer to the targeted VSI 4675 * @cmd: command to get or set RX flow classification rules 4676 * 4677 * Add Flow Director filters for a specific flow spec based on their 4678 * protocol. Returns 0 if the filters were successfully added. 4679 **/ 4680 static int i40e_add_fdir_ethtool(struct i40e_vsi *vsi, 4681 struct ethtool_rxnfc *cmd) 4682 { 4683 struct i40e_rx_flow_userdef userdef; 4684 struct ethtool_rx_flow_spec *fsp; 4685 struct i40e_fdir_filter *input; 4686 u16 dest_vsi = 0, q_index = 0; 4687 struct i40e_pf *pf; 4688 int ret = -EINVAL; 4689 u8 dest_ctl; 4690 4691 if (!vsi) 4692 return -EINVAL; 4693 pf = vsi->back; 4694 4695 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED)) 4696 return -EOPNOTSUPP; 4697 4698 if (test_bit(__I40E_FD_SB_AUTO_DISABLED, pf->state)) 4699 return -ENOSPC; 4700 4701 if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) || 4702 test_bit(__I40E_RESET_INTR_RECEIVED, pf->state)) 4703 return -EBUSY; 4704 4705 if (test_bit(__I40E_FD_FLUSH_REQUESTED, pf->state)) 4706 return -EBUSY; 4707 4708 fsp = (struct ethtool_rx_flow_spec *)&cmd->fs; 4709 4710 /* Parse the user-defined field */ 4711 if (i40e_parse_rx_flow_user_data(fsp, &userdef)) 4712 return -EINVAL; 4713 4714 /* Extended MAC field is not supported */ 4715 if (fsp->flow_type & FLOW_MAC_EXT) 4716 return -EINVAL; 4717 4718 ret = i40e_check_fdir_input_set(vsi, fsp, &userdef); 4719 if (ret) 4720 return ret; 4721 4722 if (fsp->location >= (pf->hw.func_caps.fd_filters_best_effort + 4723 pf->hw.func_caps.fd_filters_guaranteed)) { 4724 return -EINVAL; 4725 } 4726 4727 /* ring_cookie is either the drop index, or is a mask of the queue 4728 * index and VF id we wish to target. 4729 */ 4730 if (fsp->ring_cookie == RX_CLS_FLOW_DISC) { 4731 dest_ctl = I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET; 4732 } else { 4733 u32 ring = ethtool_get_flow_spec_ring(fsp->ring_cookie); 4734 u8 vf = ethtool_get_flow_spec_ring_vf(fsp->ring_cookie); 4735 4736 if (!vf) { 4737 if (ring >= vsi->num_queue_pairs) 4738 return -EINVAL; 4739 dest_vsi = vsi->id; 4740 } else { 4741 /* VFs are zero-indexed, so we subtract one here */ 4742 vf--; 4743 4744 if (vf >= pf->num_alloc_vfs) 4745 return -EINVAL; 4746 if (ring >= pf->vf[vf].num_queue_pairs) 4747 return -EINVAL; 4748 dest_vsi = pf->vf[vf].lan_vsi_id; 4749 } 4750 dest_ctl = I40E_FILTER_PROGRAM_DESC_DEST_DIRECT_PACKET_QINDEX; 4751 q_index = ring; 4752 } 4753 4754 input = kzalloc(sizeof(*input), GFP_KERNEL); 4755 4756 if (!input) 4757 return -ENOMEM; 4758 4759 input->fd_id = fsp->location; 4760 input->q_index = q_index; 4761 input->dest_vsi = dest_vsi; 4762 input->dest_ctl = dest_ctl; 4763 input->fd_status = I40E_FILTER_PROGRAM_DESC_FD_STATUS_FD_ID; 4764 input->cnt_index = I40E_FD_SB_STAT_IDX(pf->hw.pf_id); 4765 input->dst_ip = fsp->h_u.tcp_ip4_spec.ip4src; 4766 input->src_ip = fsp->h_u.tcp_ip4_spec.ip4dst; 4767 input->flow_type = fsp->flow_type & ~FLOW_EXT; 4768 4769 input->vlan_etype = fsp->h_ext.vlan_etype; 4770 if (!fsp->m_ext.vlan_etype && fsp->h_ext.vlan_tci) 4771 input->vlan_etype = cpu_to_be16(ETH_P_8021Q); 4772 if (fsp->m_ext.vlan_tci && input->vlan_etype) 4773 input->vlan_tag = fsp->h_ext.vlan_tci; 4774 if (input->flow_type == IPV6_USER_FLOW || 4775 input->flow_type == UDP_V6_FLOW || 4776 input->flow_type == TCP_V6_FLOW || 4777 input->flow_type == SCTP_V6_FLOW) { 4778 /* Reverse the src and dest notion, since the HW expects them 4779 * to be from Tx perspective where as the input from user is 4780 * from Rx filter view. 4781 */ 4782 input->ipl4_proto = fsp->h_u.usr_ip6_spec.l4_proto; 4783 input->dst_port = fsp->h_u.tcp_ip6_spec.psrc; 4784 input->src_port = fsp->h_u.tcp_ip6_spec.pdst; 4785 memcpy(input->dst_ip6, fsp->h_u.ah_ip6_spec.ip6src, 4786 sizeof(__be32) * 4); 4787 memcpy(input->src_ip6, fsp->h_u.ah_ip6_spec.ip6dst, 4788 sizeof(__be32) * 4); 4789 } else { 4790 /* Reverse the src and dest notion, since the HW expects them 4791 * to be from Tx perspective where as the input from user is 4792 * from Rx filter view. 4793 */ 4794 input->ipl4_proto = fsp->h_u.usr_ip4_spec.proto; 4795 input->dst_port = fsp->h_u.tcp_ip4_spec.psrc; 4796 input->src_port = fsp->h_u.tcp_ip4_spec.pdst; 4797 input->dst_ip = fsp->h_u.tcp_ip4_spec.ip4src; 4798 input->src_ip = fsp->h_u.tcp_ip4_spec.ip4dst; 4799 } 4800 4801 if (userdef.flex_filter) { 4802 input->flex_filter = true; 4803 input->flex_word = cpu_to_be16(userdef.flex_word); 4804 input->flex_offset = userdef.flex_offset; 4805 } 4806 4807 /* Avoid programming two filters with identical match criteria. */ 4808 ret = i40e_disallow_matching_filters(vsi, input); 4809 if (ret) 4810 goto free_filter_memory; 4811 4812 /* Add the input filter to the fdir_input_list, possibly replacing 4813 * a previous filter. Do not free the input structure after adding it 4814 * to the list as this would cause a use-after-free bug. 4815 */ 4816 i40e_update_ethtool_fdir_entry(vsi, input, fsp->location, NULL); 4817 ret = i40e_add_del_fdir(vsi, input, true); 4818 if (ret) 4819 goto remove_sw_rule; 4820 return 0; 4821 4822 remove_sw_rule: 4823 hlist_del(&input->fdir_node); 4824 pf->fdir_pf_active_filters--; 4825 free_filter_memory: 4826 kfree(input); 4827 return ret; 4828 } 4829 4830 /** 4831 * i40e_set_rxnfc - command to set RX flow classification rules 4832 * @netdev: network interface device structure 4833 * @cmd: ethtool rxnfc command 4834 * 4835 * Returns Success if the command is supported. 4836 **/ 4837 static int i40e_set_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd) 4838 { 4839 struct i40e_netdev_priv *np = netdev_priv(netdev); 4840 struct i40e_vsi *vsi = np->vsi; 4841 struct i40e_pf *pf = vsi->back; 4842 int ret = -EOPNOTSUPP; 4843 4844 switch (cmd->cmd) { 4845 case ETHTOOL_SRXFH: 4846 ret = i40e_set_rss_hash_opt(pf, cmd); 4847 break; 4848 case ETHTOOL_SRXCLSRLINS: 4849 ret = i40e_add_fdir_ethtool(vsi, cmd); 4850 break; 4851 case ETHTOOL_SRXCLSRLDEL: 4852 ret = i40e_del_fdir_entry(vsi, cmd); 4853 break; 4854 default: 4855 break; 4856 } 4857 4858 return ret; 4859 } 4860 4861 /** 4862 * i40e_max_channels - get Max number of combined channels supported 4863 * @vsi: vsi pointer 4864 **/ 4865 static unsigned int i40e_max_channels(struct i40e_vsi *vsi) 4866 { 4867 /* TODO: This code assumes DCB and FD is disabled for now. */ 4868 return vsi->alloc_queue_pairs; 4869 } 4870 4871 /** 4872 * i40e_get_channels - Get the current channels enabled and max supported etc. 4873 * @dev: network interface device structure 4874 * @ch: ethtool channels structure 4875 * 4876 * We don't support separate tx and rx queues as channels. The other count 4877 * represents how many queues are being used for control. max_combined counts 4878 * how many queue pairs we can support. They may not be mapped 1 to 1 with 4879 * q_vectors since we support a lot more queue pairs than q_vectors. 4880 **/ 4881 static void i40e_get_channels(struct net_device *dev, 4882 struct ethtool_channels *ch) 4883 { 4884 struct i40e_netdev_priv *np = netdev_priv(dev); 4885 struct i40e_vsi *vsi = np->vsi; 4886 struct i40e_pf *pf = vsi->back; 4887 4888 /* report maximum channels */ 4889 ch->max_combined = i40e_max_channels(vsi); 4890 4891 /* report info for other vector */ 4892 ch->other_count = (pf->flags & I40E_FLAG_FD_SB_ENABLED) ? 1 : 0; 4893 ch->max_other = ch->other_count; 4894 4895 /* Note: This code assumes DCB is disabled for now. */ 4896 ch->combined_count = vsi->num_queue_pairs; 4897 } 4898 4899 /** 4900 * i40e_set_channels - Set the new channels count. 4901 * @dev: network interface device structure 4902 * @ch: ethtool channels structure 4903 * 4904 * The new channels count may not be the same as requested by the user 4905 * since it gets rounded down to a power of 2 value. 4906 **/ 4907 static int i40e_set_channels(struct net_device *dev, 4908 struct ethtool_channels *ch) 4909 { 4910 const u8 drop = I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET; 4911 struct i40e_netdev_priv *np = netdev_priv(dev); 4912 unsigned int count = ch->combined_count; 4913 struct i40e_vsi *vsi = np->vsi; 4914 struct i40e_pf *pf = vsi->back; 4915 struct i40e_fdir_filter *rule; 4916 struct hlist_node *node2; 4917 int new_count; 4918 int err = 0; 4919 4920 /* We do not support setting channels for any other VSI at present */ 4921 if (vsi->type != I40E_VSI_MAIN) 4922 return -EINVAL; 4923 4924 /* We do not support setting channels via ethtool when TCs are 4925 * configured through mqprio 4926 */ 4927 if (pf->flags & I40E_FLAG_TC_MQPRIO) 4928 return -EINVAL; 4929 4930 /* verify they are not requesting separate vectors */ 4931 if (!count || ch->rx_count || ch->tx_count) 4932 return -EINVAL; 4933 4934 /* verify other_count has not changed */ 4935 if (ch->other_count != ((pf->flags & I40E_FLAG_FD_SB_ENABLED) ? 1 : 0)) 4936 return -EINVAL; 4937 4938 /* verify the number of channels does not exceed hardware limits */ 4939 if (count > i40e_max_channels(vsi)) 4940 return -EINVAL; 4941 4942 /* verify that the number of channels does not invalidate any current 4943 * flow director rules 4944 */ 4945 hlist_for_each_entry_safe(rule, node2, 4946 &pf->fdir_filter_list, fdir_node) { 4947 if (rule->dest_ctl != drop && count <= rule->q_index) { 4948 dev_warn(&pf->pdev->dev, 4949 "Existing user defined filter %d assigns flow to queue %d\n", 4950 rule->fd_id, rule->q_index); 4951 err = -EINVAL; 4952 } 4953 } 4954 4955 if (err) { 4956 dev_err(&pf->pdev->dev, 4957 "Existing filter rules must be deleted to reduce combined channel count to %d\n", 4958 count); 4959 return err; 4960 } 4961 4962 /* update feature limits from largest to smallest supported values */ 4963 /* TODO: Flow director limit, DCB etc */ 4964 4965 /* use rss_reconfig to rebuild with new queue count and update traffic 4966 * class queue mapping 4967 */ 4968 new_count = i40e_reconfig_rss_queues(pf, count); 4969 if (new_count > 0) 4970 return 0; 4971 else 4972 return -EINVAL; 4973 } 4974 4975 /** 4976 * i40e_get_rxfh_key_size - get the RSS hash key size 4977 * @netdev: network interface device structure 4978 * 4979 * Returns the table size. 4980 **/ 4981 static u32 i40e_get_rxfh_key_size(struct net_device *netdev) 4982 { 4983 return I40E_HKEY_ARRAY_SIZE; 4984 } 4985 4986 /** 4987 * i40e_get_rxfh_indir_size - get the rx flow hash indirection table size 4988 * @netdev: network interface device structure 4989 * 4990 * Returns the table size. 4991 **/ 4992 static u32 i40e_get_rxfh_indir_size(struct net_device *netdev) 4993 { 4994 return I40E_HLUT_ARRAY_SIZE; 4995 } 4996 4997 /** 4998 * i40e_get_rxfh - get the rx flow hash indirection table 4999 * @netdev: network interface device structure 5000 * @indir: indirection table 5001 * @key: hash key 5002 * @hfunc: hash function 5003 * 5004 * Reads the indirection table directly from the hardware. Returns 0 on 5005 * success. 5006 **/ 5007 static int i40e_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key, 5008 u8 *hfunc) 5009 { 5010 struct i40e_netdev_priv *np = netdev_priv(netdev); 5011 struct i40e_vsi *vsi = np->vsi; 5012 u8 *lut, *seed = NULL; 5013 int ret; 5014 u16 i; 5015 5016 if (hfunc) 5017 *hfunc = ETH_RSS_HASH_TOP; 5018 5019 if (!indir) 5020 return 0; 5021 5022 seed = key; 5023 lut = kzalloc(I40E_HLUT_ARRAY_SIZE, GFP_KERNEL); 5024 if (!lut) 5025 return -ENOMEM; 5026 ret = i40e_get_rss(vsi, seed, lut, I40E_HLUT_ARRAY_SIZE); 5027 if (ret) 5028 goto out; 5029 for (i = 0; i < I40E_HLUT_ARRAY_SIZE; i++) 5030 indir[i] = (u32)(lut[i]); 5031 5032 out: 5033 kfree(lut); 5034 5035 return ret; 5036 } 5037 5038 /** 5039 * i40e_set_rxfh - set the rx flow hash indirection table 5040 * @netdev: network interface device structure 5041 * @indir: indirection table 5042 * @key: hash key 5043 * @hfunc: hash function to use 5044 * 5045 * Returns -EINVAL if the table specifies an invalid queue id, otherwise 5046 * returns 0 after programming the table. 5047 **/ 5048 static int i40e_set_rxfh(struct net_device *netdev, const u32 *indir, 5049 const u8 *key, const u8 hfunc) 5050 { 5051 struct i40e_netdev_priv *np = netdev_priv(netdev); 5052 struct i40e_vsi *vsi = np->vsi; 5053 struct i40e_pf *pf = vsi->back; 5054 u8 *seed = NULL; 5055 u16 i; 5056 5057 if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP) 5058 return -EOPNOTSUPP; 5059 5060 if (key) { 5061 if (!vsi->rss_hkey_user) { 5062 vsi->rss_hkey_user = kzalloc(I40E_HKEY_ARRAY_SIZE, 5063 GFP_KERNEL); 5064 if (!vsi->rss_hkey_user) 5065 return -ENOMEM; 5066 } 5067 memcpy(vsi->rss_hkey_user, key, I40E_HKEY_ARRAY_SIZE); 5068 seed = vsi->rss_hkey_user; 5069 } 5070 if (!vsi->rss_lut_user) { 5071 vsi->rss_lut_user = kzalloc(I40E_HLUT_ARRAY_SIZE, GFP_KERNEL); 5072 if (!vsi->rss_lut_user) 5073 return -ENOMEM; 5074 } 5075 5076 /* Each 32 bits pointed by 'indir' is stored with a lut entry */ 5077 if (indir) 5078 for (i = 0; i < I40E_HLUT_ARRAY_SIZE; i++) 5079 vsi->rss_lut_user[i] = (u8)(indir[i]); 5080 else 5081 i40e_fill_rss_lut(pf, vsi->rss_lut_user, I40E_HLUT_ARRAY_SIZE, 5082 vsi->rss_size); 5083 5084 return i40e_config_rss(vsi, seed, vsi->rss_lut_user, 5085 I40E_HLUT_ARRAY_SIZE); 5086 } 5087 5088 /** 5089 * i40e_get_priv_flags - report device private flags 5090 * @dev: network interface device structure 5091 * 5092 * The get string set count and the string set should be matched for each 5093 * flag returned. Add new strings for each flag to the i40e_gstrings_priv_flags 5094 * array. 5095 * 5096 * Returns a u32 bitmap of flags. 5097 **/ 5098 static u32 i40e_get_priv_flags(struct net_device *dev) 5099 { 5100 struct i40e_netdev_priv *np = netdev_priv(dev); 5101 struct i40e_vsi *vsi = np->vsi; 5102 struct i40e_pf *pf = vsi->back; 5103 u32 i, j, ret_flags = 0; 5104 5105 for (i = 0; i < I40E_PRIV_FLAGS_STR_LEN; i++) { 5106 const struct i40e_priv_flags *priv_flags; 5107 5108 priv_flags = &i40e_gstrings_priv_flags[i]; 5109 5110 if (priv_flags->flag & pf->flags) 5111 ret_flags |= BIT(i); 5112 } 5113 5114 if (pf->hw.pf_id != 0) 5115 return ret_flags; 5116 5117 for (j = 0; j < I40E_GL_PRIV_FLAGS_STR_LEN; j++) { 5118 const struct i40e_priv_flags *priv_flags; 5119 5120 priv_flags = &i40e_gl_gstrings_priv_flags[j]; 5121 5122 if (priv_flags->flag & pf->flags) 5123 ret_flags |= BIT(i + j); 5124 } 5125 5126 return ret_flags; 5127 } 5128 5129 /** 5130 * i40e_set_priv_flags - set private flags 5131 * @dev: network interface device structure 5132 * @flags: bit flags to be set 5133 **/ 5134 static int i40e_set_priv_flags(struct net_device *dev, u32 flags) 5135 { 5136 struct i40e_netdev_priv *np = netdev_priv(dev); 5137 u64 orig_flags, new_flags, changed_flags; 5138 enum i40e_admin_queue_err adq_err; 5139 struct i40e_vsi *vsi = np->vsi; 5140 struct i40e_pf *pf = vsi->back; 5141 u32 reset_needed = 0; 5142 i40e_status status; 5143 u32 i, j; 5144 5145 orig_flags = READ_ONCE(pf->flags); 5146 new_flags = orig_flags; 5147 5148 for (i = 0; i < I40E_PRIV_FLAGS_STR_LEN; i++) { 5149 const struct i40e_priv_flags *priv_flags; 5150 5151 priv_flags = &i40e_gstrings_priv_flags[i]; 5152 5153 if (flags & BIT(i)) 5154 new_flags |= priv_flags->flag; 5155 else 5156 new_flags &= ~(priv_flags->flag); 5157 5158 /* If this is a read-only flag, it can't be changed */ 5159 if (priv_flags->read_only && 5160 ((orig_flags ^ new_flags) & ~BIT(i))) 5161 return -EOPNOTSUPP; 5162 } 5163 5164 if (pf->hw.pf_id != 0) 5165 goto flags_complete; 5166 5167 for (j = 0; j < I40E_GL_PRIV_FLAGS_STR_LEN; j++) { 5168 const struct i40e_priv_flags *priv_flags; 5169 5170 priv_flags = &i40e_gl_gstrings_priv_flags[j]; 5171 5172 if (flags & BIT(i + j)) 5173 new_flags |= priv_flags->flag; 5174 else 5175 new_flags &= ~(priv_flags->flag); 5176 5177 /* If this is a read-only flag, it can't be changed */ 5178 if (priv_flags->read_only && 5179 ((orig_flags ^ new_flags) & ~BIT(i))) 5180 return -EOPNOTSUPP; 5181 } 5182 5183 flags_complete: 5184 changed_flags = orig_flags ^ new_flags; 5185 5186 if (changed_flags & I40E_FLAG_DISABLE_FW_LLDP) 5187 reset_needed = I40E_PF_RESET_AND_REBUILD_FLAG; 5188 if (changed_flags & (I40E_FLAG_VEB_STATS_ENABLED | 5189 I40E_FLAG_LEGACY_RX | I40E_FLAG_SOURCE_PRUNING_DISABLED)) 5190 reset_needed = BIT(__I40E_PF_RESET_REQUESTED); 5191 5192 /* Before we finalize any flag changes, we need to perform some 5193 * checks to ensure that the changes are supported and safe. 5194 */ 5195 5196 /* ATR eviction is not supported on all devices */ 5197 if ((new_flags & I40E_FLAG_HW_ATR_EVICT_ENABLED) && 5198 !(pf->hw_features & I40E_HW_ATR_EVICT_CAPABLE)) 5199 return -EOPNOTSUPP; 5200 5201 /* If the driver detected FW LLDP was disabled on init, this flag could 5202 * be set, however we do not support _changing_ the flag: 5203 * - on XL710 if NPAR is enabled or FW API version < 1.7 5204 * - on X722 with FW API version < 1.6 5205 * There are situations where older FW versions/NPAR enabled PFs could 5206 * disable LLDP, however we _must_ not allow the user to enable/disable 5207 * LLDP with this flag on unsupported FW versions. 5208 */ 5209 if (changed_flags & I40E_FLAG_DISABLE_FW_LLDP) { 5210 if (!(pf->hw.flags & I40E_HW_FLAG_FW_LLDP_STOPPABLE)) { 5211 dev_warn(&pf->pdev->dev, 5212 "Device does not support changing FW LLDP\n"); 5213 return -EOPNOTSUPP; 5214 } 5215 } 5216 5217 if (changed_flags & I40E_FLAG_RS_FEC && 5218 pf->hw.device_id != I40E_DEV_ID_25G_SFP28 && 5219 pf->hw.device_id != I40E_DEV_ID_25G_B) { 5220 dev_warn(&pf->pdev->dev, 5221 "Device does not support changing FEC configuration\n"); 5222 return -EOPNOTSUPP; 5223 } 5224 5225 if (changed_flags & I40E_FLAG_BASE_R_FEC && 5226 pf->hw.device_id != I40E_DEV_ID_25G_SFP28 && 5227 pf->hw.device_id != I40E_DEV_ID_25G_B && 5228 pf->hw.device_id != I40E_DEV_ID_KX_X722) { 5229 dev_warn(&pf->pdev->dev, 5230 "Device does not support changing FEC configuration\n"); 5231 return -EOPNOTSUPP; 5232 } 5233 5234 /* Process any additional changes needed as a result of flag changes. 5235 * The changed_flags value reflects the list of bits that were 5236 * changed in the code above. 5237 */ 5238 5239 /* Flush current ATR settings if ATR was disabled */ 5240 if ((changed_flags & I40E_FLAG_FD_ATR_ENABLED) && 5241 !(new_flags & I40E_FLAG_FD_ATR_ENABLED)) { 5242 set_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state); 5243 set_bit(__I40E_FD_FLUSH_REQUESTED, pf->state); 5244 } 5245 5246 if (changed_flags & I40E_FLAG_TRUE_PROMISC_SUPPORT) { 5247 u16 sw_flags = 0, valid_flags = 0; 5248 int ret; 5249 5250 if (!(new_flags & I40E_FLAG_TRUE_PROMISC_SUPPORT)) 5251 sw_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC; 5252 valid_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC; 5253 ret = i40e_aq_set_switch_config(&pf->hw, sw_flags, valid_flags, 5254 0, NULL); 5255 if (ret && pf->hw.aq.asq_last_status != I40E_AQ_RC_ESRCH) { 5256 dev_info(&pf->pdev->dev, 5257 "couldn't set switch config bits, err %s aq_err %s\n", 5258 i40e_stat_str(&pf->hw, ret), 5259 i40e_aq_str(&pf->hw, 5260 pf->hw.aq.asq_last_status)); 5261 /* not a fatal problem, just keep going */ 5262 } 5263 } 5264 5265 if ((changed_flags & I40E_FLAG_RS_FEC) || 5266 (changed_flags & I40E_FLAG_BASE_R_FEC)) { 5267 u8 fec_cfg = 0; 5268 5269 if (new_flags & I40E_FLAG_RS_FEC && 5270 new_flags & I40E_FLAG_BASE_R_FEC) { 5271 fec_cfg = I40E_AQ_SET_FEC_AUTO; 5272 } else if (new_flags & I40E_FLAG_RS_FEC) { 5273 fec_cfg = (I40E_AQ_SET_FEC_REQUEST_RS | 5274 I40E_AQ_SET_FEC_ABILITY_RS); 5275 } else if (new_flags & I40E_FLAG_BASE_R_FEC) { 5276 fec_cfg = (I40E_AQ_SET_FEC_REQUEST_KR | 5277 I40E_AQ_SET_FEC_ABILITY_KR); 5278 } 5279 if (i40e_set_fec_cfg(dev, fec_cfg)) 5280 dev_warn(&pf->pdev->dev, "Cannot change FEC config\n"); 5281 } 5282 5283 if ((changed_flags & I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED) && 5284 (orig_flags & I40E_FLAG_TOTAL_PORT_SHUTDOWN_ENABLED)) { 5285 dev_err(&pf->pdev->dev, 5286 "Setting link-down-on-close not supported on this port (because total-port-shutdown is enabled)\n"); 5287 return -EOPNOTSUPP; 5288 } 5289 5290 if ((changed_flags & I40E_FLAG_VF_VLAN_PRUNING) && 5291 pf->num_alloc_vfs) { 5292 dev_warn(&pf->pdev->dev, 5293 "Changing vf-vlan-pruning flag while VF(s) are active is not supported\n"); 5294 return -EOPNOTSUPP; 5295 } 5296 5297 if ((changed_flags & new_flags & 5298 I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED) && 5299 (new_flags & I40E_FLAG_MFP_ENABLED)) 5300 dev_warn(&pf->pdev->dev, 5301 "Turning on link-down-on-close flag may affect other partitions\n"); 5302 5303 if (changed_flags & I40E_FLAG_DISABLE_FW_LLDP) { 5304 if (new_flags & I40E_FLAG_DISABLE_FW_LLDP) { 5305 #ifdef CONFIG_I40E_DCB 5306 i40e_dcb_sw_default_config(pf); 5307 #endif /* CONFIG_I40E_DCB */ 5308 i40e_aq_cfg_lldp_mib_change_event(&pf->hw, false, NULL); 5309 i40e_aq_stop_lldp(&pf->hw, true, false, NULL); 5310 } else { 5311 status = i40e_aq_start_lldp(&pf->hw, false, NULL); 5312 if (status) { 5313 adq_err = pf->hw.aq.asq_last_status; 5314 switch (adq_err) { 5315 case I40E_AQ_RC_EEXIST: 5316 dev_warn(&pf->pdev->dev, 5317 "FW LLDP agent is already running\n"); 5318 reset_needed = 0; 5319 break; 5320 case I40E_AQ_RC_EPERM: 5321 dev_warn(&pf->pdev->dev, 5322 "Device configuration forbids SW from starting the LLDP agent.\n"); 5323 return -EINVAL; 5324 case I40E_AQ_RC_EAGAIN: 5325 dev_warn(&pf->pdev->dev, 5326 "Stop FW LLDP agent command is still being processed, please try again in a second.\n"); 5327 return -EBUSY; 5328 default: 5329 dev_warn(&pf->pdev->dev, 5330 "Starting FW LLDP agent failed: error: %s, %s\n", 5331 i40e_stat_str(&pf->hw, 5332 status), 5333 i40e_aq_str(&pf->hw, 5334 adq_err)); 5335 return -EINVAL; 5336 } 5337 } 5338 } 5339 } 5340 5341 /* Now that we've checked to ensure that the new flags are valid, load 5342 * them into place. Since we only modify flags either (a) during 5343 * initialization or (b) while holding the RTNL lock, we don't need 5344 * anything fancy here. 5345 */ 5346 pf->flags = new_flags; 5347 5348 /* Issue reset to cause things to take effect, as additional bits 5349 * are added we will need to create a mask of bits requiring reset 5350 */ 5351 if (reset_needed) 5352 i40e_do_reset(pf, reset_needed, true); 5353 5354 return 0; 5355 } 5356 5357 /** 5358 * i40e_get_module_info - get (Q)SFP+ module type info 5359 * @netdev: network interface device structure 5360 * @modinfo: module EEPROM size and layout information structure 5361 **/ 5362 static int i40e_get_module_info(struct net_device *netdev, 5363 struct ethtool_modinfo *modinfo) 5364 { 5365 struct i40e_netdev_priv *np = netdev_priv(netdev); 5366 struct i40e_vsi *vsi = np->vsi; 5367 struct i40e_pf *pf = vsi->back; 5368 struct i40e_hw *hw = &pf->hw; 5369 u32 sff8472_comp = 0; 5370 u32 sff8472_swap = 0; 5371 u32 sff8636_rev = 0; 5372 i40e_status status; 5373 u32 type = 0; 5374 5375 /* Check if firmware supports reading module EEPROM. */ 5376 if (!(hw->flags & I40E_HW_FLAG_AQ_PHY_ACCESS_CAPABLE)) { 5377 netdev_err(vsi->netdev, "Module EEPROM memory read not supported. Please update the NVM image.\n"); 5378 return -EINVAL; 5379 } 5380 5381 status = i40e_update_link_info(hw); 5382 if (status) 5383 return -EIO; 5384 5385 if (hw->phy.link_info.phy_type == I40E_PHY_TYPE_EMPTY) { 5386 netdev_err(vsi->netdev, "Cannot read module EEPROM memory. No module connected.\n"); 5387 return -EINVAL; 5388 } 5389 5390 type = hw->phy.link_info.module_type[0]; 5391 5392 switch (type) { 5393 case I40E_MODULE_TYPE_SFP: 5394 status = i40e_aq_get_phy_register(hw, 5395 I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE, 5396 I40E_I2C_EEPROM_DEV_ADDR, true, 5397 I40E_MODULE_SFF_8472_COMP, 5398 &sff8472_comp, NULL); 5399 if (status) 5400 return -EIO; 5401 5402 status = i40e_aq_get_phy_register(hw, 5403 I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE, 5404 I40E_I2C_EEPROM_DEV_ADDR, true, 5405 I40E_MODULE_SFF_8472_SWAP, 5406 &sff8472_swap, NULL); 5407 if (status) 5408 return -EIO; 5409 5410 /* Check if the module requires address swap to access 5411 * the other EEPROM memory page. 5412 */ 5413 if (sff8472_swap & I40E_MODULE_SFF_ADDR_MODE) { 5414 netdev_warn(vsi->netdev, "Module address swap to access page 0xA2 is not supported.\n"); 5415 modinfo->type = ETH_MODULE_SFF_8079; 5416 modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN; 5417 } else if (sff8472_comp == 0x00) { 5418 /* Module is not SFF-8472 compliant */ 5419 modinfo->type = ETH_MODULE_SFF_8079; 5420 modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN; 5421 } else if (!(sff8472_swap & I40E_MODULE_SFF_DDM_IMPLEMENTED)) { 5422 /* Module is SFF-8472 compliant but doesn't implement 5423 * Digital Diagnostic Monitoring (DDM). 5424 */ 5425 modinfo->type = ETH_MODULE_SFF_8079; 5426 modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN; 5427 } else { 5428 modinfo->type = ETH_MODULE_SFF_8472; 5429 modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN; 5430 } 5431 break; 5432 case I40E_MODULE_TYPE_QSFP_PLUS: 5433 /* Read from memory page 0. */ 5434 status = i40e_aq_get_phy_register(hw, 5435 I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE, 5436 0, true, 5437 I40E_MODULE_REVISION_ADDR, 5438 &sff8636_rev, NULL); 5439 if (status) 5440 return -EIO; 5441 /* Determine revision compliance byte */ 5442 if (sff8636_rev > 0x02) { 5443 /* Module is SFF-8636 compliant */ 5444 modinfo->type = ETH_MODULE_SFF_8636; 5445 modinfo->eeprom_len = I40E_MODULE_QSFP_MAX_LEN; 5446 } else { 5447 modinfo->type = ETH_MODULE_SFF_8436; 5448 modinfo->eeprom_len = I40E_MODULE_QSFP_MAX_LEN; 5449 } 5450 break; 5451 case I40E_MODULE_TYPE_QSFP28: 5452 modinfo->type = ETH_MODULE_SFF_8636; 5453 modinfo->eeprom_len = I40E_MODULE_QSFP_MAX_LEN; 5454 break; 5455 default: 5456 netdev_err(vsi->netdev, "Module type unrecognized\n"); 5457 return -EINVAL; 5458 } 5459 return 0; 5460 } 5461 5462 /** 5463 * i40e_get_module_eeprom - fills buffer with (Q)SFP+ module memory contents 5464 * @netdev: network interface device structure 5465 * @ee: EEPROM dump request structure 5466 * @data: buffer to be filled with EEPROM contents 5467 **/ 5468 static int i40e_get_module_eeprom(struct net_device *netdev, 5469 struct ethtool_eeprom *ee, 5470 u8 *data) 5471 { 5472 struct i40e_netdev_priv *np = netdev_priv(netdev); 5473 struct i40e_vsi *vsi = np->vsi; 5474 struct i40e_pf *pf = vsi->back; 5475 struct i40e_hw *hw = &pf->hw; 5476 bool is_sfp = false; 5477 i40e_status status; 5478 u32 value = 0; 5479 int i; 5480 5481 if (!ee || !ee->len || !data) 5482 return -EINVAL; 5483 5484 if (hw->phy.link_info.module_type[0] == I40E_MODULE_TYPE_SFP) 5485 is_sfp = true; 5486 5487 for (i = 0; i < ee->len; i++) { 5488 u32 offset = i + ee->offset; 5489 u32 addr = is_sfp ? I40E_I2C_EEPROM_DEV_ADDR : 0; 5490 5491 /* Check if we need to access the other memory page */ 5492 if (is_sfp) { 5493 if (offset >= ETH_MODULE_SFF_8079_LEN) { 5494 offset -= ETH_MODULE_SFF_8079_LEN; 5495 addr = I40E_I2C_EEPROM_DEV_ADDR2; 5496 } 5497 } else { 5498 while (offset >= ETH_MODULE_SFF_8436_LEN) { 5499 /* Compute memory page number and offset. */ 5500 offset -= ETH_MODULE_SFF_8436_LEN / 2; 5501 addr++; 5502 } 5503 } 5504 5505 status = i40e_aq_get_phy_register(hw, 5506 I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE, 5507 addr, true, offset, &value, NULL); 5508 if (status) 5509 return -EIO; 5510 data[i] = value; 5511 } 5512 return 0; 5513 } 5514 5515 static int i40e_get_eee(struct net_device *netdev, struct ethtool_eee *edata) 5516 { 5517 struct i40e_netdev_priv *np = netdev_priv(netdev); 5518 struct i40e_aq_get_phy_abilities_resp phy_cfg; 5519 enum i40e_status_code status = 0; 5520 struct i40e_vsi *vsi = np->vsi; 5521 struct i40e_pf *pf = vsi->back; 5522 struct i40e_hw *hw = &pf->hw; 5523 5524 /* Get initial PHY capabilities */ 5525 status = i40e_aq_get_phy_capabilities(hw, false, true, &phy_cfg, NULL); 5526 if (status) 5527 return -EAGAIN; 5528 5529 /* Check whether NIC configuration is compatible with Energy Efficient 5530 * Ethernet (EEE) mode. 5531 */ 5532 if (phy_cfg.eee_capability == 0) 5533 return -EOPNOTSUPP; 5534 5535 edata->supported = SUPPORTED_Autoneg; 5536 edata->lp_advertised = edata->supported; 5537 5538 /* Get current configuration */ 5539 status = i40e_aq_get_phy_capabilities(hw, false, false, &phy_cfg, NULL); 5540 if (status) 5541 return -EAGAIN; 5542 5543 edata->advertised = phy_cfg.eee_capability ? SUPPORTED_Autoneg : 0U; 5544 edata->eee_enabled = !!edata->advertised; 5545 edata->tx_lpi_enabled = pf->stats.tx_lpi_status; 5546 5547 edata->eee_active = pf->stats.tx_lpi_status && pf->stats.rx_lpi_status; 5548 5549 return 0; 5550 } 5551 5552 static int i40e_is_eee_param_supported(struct net_device *netdev, 5553 struct ethtool_eee *edata) 5554 { 5555 struct i40e_netdev_priv *np = netdev_priv(netdev); 5556 struct i40e_vsi *vsi = np->vsi; 5557 struct i40e_pf *pf = vsi->back; 5558 struct i40e_ethtool_not_used { 5559 u32 value; 5560 const char *name; 5561 } param[] = { 5562 {edata->advertised & ~SUPPORTED_Autoneg, "advertise"}, 5563 {edata->tx_lpi_timer, "tx-timer"}, 5564 {edata->tx_lpi_enabled != pf->stats.tx_lpi_status, "tx-lpi"} 5565 }; 5566 int i; 5567 5568 for (i = 0; i < ARRAY_SIZE(param); i++) { 5569 if (param[i].value) { 5570 netdev_info(netdev, 5571 "EEE setting %s not supported\n", 5572 param[i].name); 5573 return -EOPNOTSUPP; 5574 } 5575 } 5576 5577 return 0; 5578 } 5579 5580 static int i40e_set_eee(struct net_device *netdev, struct ethtool_eee *edata) 5581 { 5582 struct i40e_netdev_priv *np = netdev_priv(netdev); 5583 struct i40e_aq_get_phy_abilities_resp abilities; 5584 enum i40e_status_code status = I40E_SUCCESS; 5585 struct i40e_aq_set_phy_config config; 5586 struct i40e_vsi *vsi = np->vsi; 5587 struct i40e_pf *pf = vsi->back; 5588 struct i40e_hw *hw = &pf->hw; 5589 __le16 eee_capability; 5590 5591 /* Deny parameters we don't support */ 5592 if (i40e_is_eee_param_supported(netdev, edata)) 5593 return -EOPNOTSUPP; 5594 5595 /* Get initial PHY capabilities */ 5596 status = i40e_aq_get_phy_capabilities(hw, false, true, &abilities, 5597 NULL); 5598 if (status) 5599 return -EAGAIN; 5600 5601 /* Check whether NIC configuration is compatible with Energy Efficient 5602 * Ethernet (EEE) mode. 5603 */ 5604 if (abilities.eee_capability == 0) 5605 return -EOPNOTSUPP; 5606 5607 /* Cache initial EEE capability */ 5608 eee_capability = abilities.eee_capability; 5609 5610 /* Get current PHY configuration */ 5611 status = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, 5612 NULL); 5613 if (status) 5614 return -EAGAIN; 5615 5616 /* Cache current PHY configuration */ 5617 config.phy_type = abilities.phy_type; 5618 config.phy_type_ext = abilities.phy_type_ext; 5619 config.link_speed = abilities.link_speed; 5620 config.abilities = abilities.abilities | 5621 I40E_AQ_PHY_ENABLE_ATOMIC_LINK; 5622 config.eeer = abilities.eeer_val; 5623 config.low_power_ctrl = abilities.d3_lpan; 5624 config.fec_config = abilities.fec_cfg_curr_mod_ext_info & 5625 I40E_AQ_PHY_FEC_CONFIG_MASK; 5626 5627 /* Set desired EEE state */ 5628 if (edata->eee_enabled) { 5629 config.eee_capability = eee_capability; 5630 config.eeer |= cpu_to_le32(I40E_PRTPM_EEER_TX_LPI_EN_MASK); 5631 } else { 5632 config.eee_capability = 0; 5633 config.eeer &= cpu_to_le32(~I40E_PRTPM_EEER_TX_LPI_EN_MASK); 5634 } 5635 5636 /* Apply modified PHY configuration */ 5637 status = i40e_aq_set_phy_config(hw, &config, NULL); 5638 if (status) 5639 return -EAGAIN; 5640 5641 return 0; 5642 } 5643 5644 static const struct ethtool_ops i40e_ethtool_recovery_mode_ops = { 5645 .get_drvinfo = i40e_get_drvinfo, 5646 .set_eeprom = i40e_set_eeprom, 5647 .get_eeprom_len = i40e_get_eeprom_len, 5648 .get_eeprom = i40e_get_eeprom, 5649 }; 5650 5651 static const struct ethtool_ops i40e_ethtool_ops = { 5652 .supported_coalesce_params = ETHTOOL_COALESCE_USECS | 5653 ETHTOOL_COALESCE_MAX_FRAMES_IRQ | 5654 ETHTOOL_COALESCE_USE_ADAPTIVE | 5655 ETHTOOL_COALESCE_RX_USECS_HIGH | 5656 ETHTOOL_COALESCE_TX_USECS_HIGH, 5657 .get_drvinfo = i40e_get_drvinfo, 5658 .get_regs_len = i40e_get_regs_len, 5659 .get_regs = i40e_get_regs, 5660 .nway_reset = i40e_nway_reset, 5661 .get_link = ethtool_op_get_link, 5662 .get_wol = i40e_get_wol, 5663 .set_wol = i40e_set_wol, 5664 .set_eeprom = i40e_set_eeprom, 5665 .get_eeprom_len = i40e_get_eeprom_len, 5666 .get_eeprom = i40e_get_eeprom, 5667 .get_ringparam = i40e_get_ringparam, 5668 .set_ringparam = i40e_set_ringparam, 5669 .get_pauseparam = i40e_get_pauseparam, 5670 .set_pauseparam = i40e_set_pauseparam, 5671 .get_msglevel = i40e_get_msglevel, 5672 .set_msglevel = i40e_set_msglevel, 5673 .get_rxnfc = i40e_get_rxnfc, 5674 .set_rxnfc = i40e_set_rxnfc, 5675 .self_test = i40e_diag_test, 5676 .get_strings = i40e_get_strings, 5677 .get_eee = i40e_get_eee, 5678 .set_eee = i40e_set_eee, 5679 .set_phys_id = i40e_set_phys_id, 5680 .get_sset_count = i40e_get_sset_count, 5681 .get_ethtool_stats = i40e_get_ethtool_stats, 5682 .get_coalesce = i40e_get_coalesce, 5683 .set_coalesce = i40e_set_coalesce, 5684 .get_rxfh_key_size = i40e_get_rxfh_key_size, 5685 .get_rxfh_indir_size = i40e_get_rxfh_indir_size, 5686 .get_rxfh = i40e_get_rxfh, 5687 .set_rxfh = i40e_set_rxfh, 5688 .get_channels = i40e_get_channels, 5689 .set_channels = i40e_set_channels, 5690 .get_module_info = i40e_get_module_info, 5691 .get_module_eeprom = i40e_get_module_eeprom, 5692 .get_ts_info = i40e_get_ts_info, 5693 .get_priv_flags = i40e_get_priv_flags, 5694 .set_priv_flags = i40e_set_priv_flags, 5695 .get_per_queue_coalesce = i40e_get_per_queue_coalesce, 5696 .set_per_queue_coalesce = i40e_set_per_queue_coalesce, 5697 .get_link_ksettings = i40e_get_link_ksettings, 5698 .set_link_ksettings = i40e_set_link_ksettings, 5699 .get_fecparam = i40e_get_fec_param, 5700 .set_fecparam = i40e_set_fec_param, 5701 .flash_device = i40e_ddp_flash, 5702 }; 5703 5704 void i40e_set_ethtool_ops(struct net_device *netdev) 5705 { 5706 struct i40e_netdev_priv *np = netdev_priv(netdev); 5707 struct i40e_pf *pf = np->vsi->back; 5708 5709 if (!test_bit(__I40E_RECOVERY_MODE, pf->state)) 5710 netdev->ethtool_ops = &i40e_ethtool_ops; 5711 else 5712 netdev->ethtool_ops = &i40e_ethtool_recovery_mode_ops; 5713 } 5714