1 /******************************************************************************* 2 * 3 * Intel Ethernet Controller XL710 Family Linux Driver 4 * Copyright(c) 2013 - 2014 Intel Corporation. 5 * 6 * This program is free software; you can redistribute it and/or modify it 7 * under the terms and conditions of the GNU General Public License, 8 * version 2, as published by the Free Software Foundation. 9 * 10 * This program is distributed in the hope it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 13 * more details. 14 * 15 * You should have received a copy of the GNU General Public License along 16 * with this program. If not, see <http://www.gnu.org/licenses/>. 17 * 18 * The full GNU General Public License is included in this distribution in 19 * the file called "COPYING". 20 * 21 * Contact Information: 22 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> 23 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 24 * 25 ******************************************************************************/ 26 27 #include "i40e_adminq.h" 28 #include "i40e_prototype.h" 29 #include "i40e_dcb.h" 30 31 /** 32 * i40e_get_dcbx_status 33 * @hw: pointer to the hw struct 34 * @status: Embedded DCBX Engine Status 35 * 36 * Get the DCBX status from the Firmware 37 **/ 38 i40e_status i40e_get_dcbx_status(struct i40e_hw *hw, u16 *status) 39 { 40 u32 reg; 41 42 if (!status) 43 return I40E_ERR_PARAM; 44 45 reg = rd32(hw, I40E_PRTDCB_GENS); 46 *status = (u16)((reg & I40E_PRTDCB_GENS_DCBX_STATUS_MASK) >> 47 I40E_PRTDCB_GENS_DCBX_STATUS_SHIFT); 48 49 return 0; 50 } 51 52 /** 53 * i40e_parse_ieee_etscfg_tlv 54 * @tlv: IEEE 802.1Qaz ETS CFG TLV 55 * @dcbcfg: Local store to update ETS CFG data 56 * 57 * Parses IEEE 802.1Qaz ETS CFG TLV 58 **/ 59 static void i40e_parse_ieee_etscfg_tlv(struct i40e_lldp_org_tlv *tlv, 60 struct i40e_dcbx_config *dcbcfg) 61 { 62 struct i40e_ieee_ets_config *etscfg; 63 u8 *buf = tlv->tlvinfo; 64 u16 offset = 0; 65 u8 priority; 66 int i; 67 68 /* First Octet post subtype 69 * -------------------------- 70 * |will-|CBS | Re- | Max | 71 * |ing | |served| TCs | 72 * -------------------------- 73 * |1bit | 1bit|3 bits|3bits| 74 */ 75 etscfg = &dcbcfg->etscfg; 76 etscfg->willing = (u8)((buf[offset] & I40E_IEEE_ETS_WILLING_MASK) >> 77 I40E_IEEE_ETS_WILLING_SHIFT); 78 etscfg->cbs = (u8)((buf[offset] & I40E_IEEE_ETS_CBS_MASK) >> 79 I40E_IEEE_ETS_CBS_SHIFT); 80 etscfg->maxtcs = (u8)((buf[offset] & I40E_IEEE_ETS_MAXTC_MASK) >> 81 I40E_IEEE_ETS_MAXTC_SHIFT); 82 83 /* Move offset to Priority Assignment Table */ 84 offset++; 85 86 /* Priority Assignment Table (4 octets) 87 * Octets:| 1 | 2 | 3 | 4 | 88 * ----------------------------------------- 89 * |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7| 90 * ----------------------------------------- 91 * Bits:|7 4|3 0|7 4|3 0|7 4|3 0|7 4|3 0| 92 * ----------------------------------------- 93 */ 94 for (i = 0; i < 4; i++) { 95 priority = (u8)((buf[offset] & I40E_IEEE_ETS_PRIO_1_MASK) >> 96 I40E_IEEE_ETS_PRIO_1_SHIFT); 97 etscfg->prioritytable[i * 2] = priority; 98 priority = (u8)((buf[offset] & I40E_IEEE_ETS_PRIO_0_MASK) >> 99 I40E_IEEE_ETS_PRIO_0_SHIFT); 100 etscfg->prioritytable[i * 2 + 1] = priority; 101 offset++; 102 } 103 104 /* TC Bandwidth Table (8 octets) 105 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 106 * --------------------------------- 107 * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7| 108 * --------------------------------- 109 */ 110 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) 111 etscfg->tcbwtable[i] = buf[offset++]; 112 113 /* TSA Assignment Table (8 octets) 114 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 115 * --------------------------------- 116 * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7| 117 * --------------------------------- 118 */ 119 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) 120 etscfg->tsatable[i] = buf[offset++]; 121 } 122 123 /** 124 * i40e_parse_ieee_etsrec_tlv 125 * @tlv: IEEE 802.1Qaz ETS REC TLV 126 * @dcbcfg: Local store to update ETS REC data 127 * 128 * Parses IEEE 802.1Qaz ETS REC TLV 129 **/ 130 static void i40e_parse_ieee_etsrec_tlv(struct i40e_lldp_org_tlv *tlv, 131 struct i40e_dcbx_config *dcbcfg) 132 { 133 u8 *buf = tlv->tlvinfo; 134 u16 offset = 0; 135 u8 priority; 136 int i; 137 138 /* Move offset to priority table */ 139 offset++; 140 141 /* Priority Assignment Table (4 octets) 142 * Octets:| 1 | 2 | 3 | 4 | 143 * ----------------------------------------- 144 * |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7| 145 * ----------------------------------------- 146 * Bits:|7 4|3 0|7 4|3 0|7 4|3 0|7 4|3 0| 147 * ----------------------------------------- 148 */ 149 for (i = 0; i < 4; i++) { 150 priority = (u8)((buf[offset] & I40E_IEEE_ETS_PRIO_1_MASK) >> 151 I40E_IEEE_ETS_PRIO_1_SHIFT); 152 dcbcfg->etsrec.prioritytable[i*2] = priority; 153 priority = (u8)((buf[offset] & I40E_IEEE_ETS_PRIO_0_MASK) >> 154 I40E_IEEE_ETS_PRIO_0_SHIFT); 155 dcbcfg->etsrec.prioritytable[i*2 + 1] = priority; 156 offset++; 157 } 158 159 /* TC Bandwidth Table (8 octets) 160 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 161 * --------------------------------- 162 * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7| 163 * --------------------------------- 164 */ 165 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) 166 dcbcfg->etsrec.tcbwtable[i] = buf[offset++]; 167 168 /* TSA Assignment Table (8 octets) 169 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 170 * --------------------------------- 171 * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7| 172 * --------------------------------- 173 */ 174 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) 175 dcbcfg->etsrec.tsatable[i] = buf[offset++]; 176 } 177 178 /** 179 * i40e_parse_ieee_pfccfg_tlv 180 * @tlv: IEEE 802.1Qaz PFC CFG TLV 181 * @dcbcfg: Local store to update PFC CFG data 182 * 183 * Parses IEEE 802.1Qaz PFC CFG TLV 184 **/ 185 static void i40e_parse_ieee_pfccfg_tlv(struct i40e_lldp_org_tlv *tlv, 186 struct i40e_dcbx_config *dcbcfg) 187 { 188 u8 *buf = tlv->tlvinfo; 189 190 /* ---------------------------------------- 191 * |will-|MBC | Re- | PFC | PFC Enable | 192 * |ing | |served| cap | | 193 * ----------------------------------------- 194 * |1bit | 1bit|2 bits|4bits| 1 octet | 195 */ 196 dcbcfg->pfc.willing = (u8)((buf[0] & I40E_IEEE_PFC_WILLING_MASK) >> 197 I40E_IEEE_PFC_WILLING_SHIFT); 198 dcbcfg->pfc.mbc = (u8)((buf[0] & I40E_IEEE_PFC_MBC_MASK) >> 199 I40E_IEEE_PFC_MBC_SHIFT); 200 dcbcfg->pfc.pfccap = (u8)((buf[0] & I40E_IEEE_PFC_CAP_MASK) >> 201 I40E_IEEE_PFC_CAP_SHIFT); 202 dcbcfg->pfc.pfcenable = buf[1]; 203 } 204 205 /** 206 * i40e_parse_ieee_app_tlv 207 * @tlv: IEEE 802.1Qaz APP TLV 208 * @dcbcfg: Local store to update APP PRIO data 209 * 210 * Parses IEEE 802.1Qaz APP PRIO TLV 211 **/ 212 static void i40e_parse_ieee_app_tlv(struct i40e_lldp_org_tlv *tlv, 213 struct i40e_dcbx_config *dcbcfg) 214 { 215 u16 typelength; 216 u16 offset = 0; 217 u16 length; 218 int i = 0; 219 u8 *buf; 220 221 typelength = ntohs(tlv->typelength); 222 length = (u16)((typelength & I40E_LLDP_TLV_LEN_MASK) >> 223 I40E_LLDP_TLV_LEN_SHIFT); 224 buf = tlv->tlvinfo; 225 226 /* The App priority table starts 5 octets after TLV header */ 227 length -= (sizeof(tlv->ouisubtype) + 1); 228 229 /* Move offset to App Priority Table */ 230 offset++; 231 232 /* Application Priority Table (3 octets) 233 * Octets:| 1 | 2 | 3 | 234 * ----------------------------------------- 235 * |Priority|Rsrvd| Sel | Protocol ID | 236 * ----------------------------------------- 237 * Bits:|23 21|20 19|18 16|15 0| 238 * ----------------------------------------- 239 */ 240 while (offset < length) { 241 dcbcfg->app[i].priority = (u8)((buf[offset] & 242 I40E_IEEE_APP_PRIO_MASK) >> 243 I40E_IEEE_APP_PRIO_SHIFT); 244 dcbcfg->app[i].selector = (u8)((buf[offset] & 245 I40E_IEEE_APP_SEL_MASK) >> 246 I40E_IEEE_APP_SEL_SHIFT); 247 dcbcfg->app[i].protocolid = (buf[offset + 1] << 0x8) | 248 buf[offset + 2]; 249 /* Move to next app */ 250 offset += 3; 251 i++; 252 if (i >= I40E_DCBX_MAX_APPS) 253 break; 254 } 255 256 dcbcfg->numapps = i; 257 } 258 259 /** 260 * i40e_parse_ieee_etsrec_tlv 261 * @tlv: IEEE 802.1Qaz TLV 262 * @dcbcfg: Local store to update ETS REC data 263 * 264 * Get the TLV subtype and send it to parsing function 265 * based on the subtype value 266 **/ 267 static void i40e_parse_ieee_tlv(struct i40e_lldp_org_tlv *tlv, 268 struct i40e_dcbx_config *dcbcfg) 269 { 270 u32 ouisubtype; 271 u8 subtype; 272 273 ouisubtype = ntohl(tlv->ouisubtype); 274 subtype = (u8)((ouisubtype & I40E_LLDP_TLV_SUBTYPE_MASK) >> 275 I40E_LLDP_TLV_SUBTYPE_SHIFT); 276 switch (subtype) { 277 case I40E_IEEE_SUBTYPE_ETS_CFG: 278 i40e_parse_ieee_etscfg_tlv(tlv, dcbcfg); 279 break; 280 case I40E_IEEE_SUBTYPE_ETS_REC: 281 i40e_parse_ieee_etsrec_tlv(tlv, dcbcfg); 282 break; 283 case I40E_IEEE_SUBTYPE_PFC_CFG: 284 i40e_parse_ieee_pfccfg_tlv(tlv, dcbcfg); 285 break; 286 case I40E_IEEE_SUBTYPE_APP_PRI: 287 i40e_parse_ieee_app_tlv(tlv, dcbcfg); 288 break; 289 default: 290 break; 291 } 292 } 293 294 /** 295 * i40e_parse_org_tlv 296 * @tlv: Organization specific TLV 297 * @dcbcfg: Local store to update ETS REC data 298 * 299 * Currently only IEEE 802.1Qaz TLV is supported, all others 300 * will be returned 301 **/ 302 static void i40e_parse_org_tlv(struct i40e_lldp_org_tlv *tlv, 303 struct i40e_dcbx_config *dcbcfg) 304 { 305 u32 ouisubtype; 306 u32 oui; 307 308 ouisubtype = ntohl(tlv->ouisubtype); 309 oui = (u32)((ouisubtype & I40E_LLDP_TLV_OUI_MASK) >> 310 I40E_LLDP_TLV_OUI_SHIFT); 311 switch (oui) { 312 case I40E_IEEE_8021QAZ_OUI: 313 i40e_parse_ieee_tlv(tlv, dcbcfg); 314 break; 315 default: 316 break; 317 } 318 } 319 320 /** 321 * i40e_lldp_to_dcb_config 322 * @lldpmib: LLDPDU to be parsed 323 * @dcbcfg: store for LLDPDU data 324 * 325 * Parse DCB configuration from the LLDPDU 326 **/ 327 i40e_status i40e_lldp_to_dcb_config(u8 *lldpmib, 328 struct i40e_dcbx_config *dcbcfg) 329 { 330 i40e_status ret = 0; 331 struct i40e_lldp_org_tlv *tlv; 332 u16 type; 333 u16 length; 334 u16 typelength; 335 u16 offset = 0; 336 337 if (!lldpmib || !dcbcfg) 338 return I40E_ERR_PARAM; 339 340 /* set to the start of LLDPDU */ 341 lldpmib += ETH_HLEN; 342 tlv = (struct i40e_lldp_org_tlv *)lldpmib; 343 while (1) { 344 typelength = ntohs(tlv->typelength); 345 type = (u16)((typelength & I40E_LLDP_TLV_TYPE_MASK) >> 346 I40E_LLDP_TLV_TYPE_SHIFT); 347 length = (u16)((typelength & I40E_LLDP_TLV_LEN_MASK) >> 348 I40E_LLDP_TLV_LEN_SHIFT); 349 offset += sizeof(typelength) + length; 350 351 /* END TLV or beyond LLDPDU size */ 352 if ((type == I40E_TLV_TYPE_END) || (offset > I40E_LLDPDU_SIZE)) 353 break; 354 355 switch (type) { 356 case I40E_TLV_TYPE_ORG: 357 i40e_parse_org_tlv(tlv, dcbcfg); 358 break; 359 default: 360 break; 361 } 362 363 /* Move to next TLV */ 364 tlv = (struct i40e_lldp_org_tlv *)((char *)tlv + 365 sizeof(tlv->typelength) + 366 length); 367 } 368 369 return ret; 370 } 371 372 /** 373 * i40e_aq_get_dcb_config 374 * @hw: pointer to the hw struct 375 * @mib_type: mib type for the query 376 * @bridgetype: bridge type for the query (remote) 377 * @dcbcfg: store for LLDPDU data 378 * 379 * Query DCB configuration from the Firmware 380 **/ 381 i40e_status i40e_aq_get_dcb_config(struct i40e_hw *hw, u8 mib_type, 382 u8 bridgetype, 383 struct i40e_dcbx_config *dcbcfg) 384 { 385 i40e_status ret = 0; 386 struct i40e_virt_mem mem; 387 u8 *lldpmib; 388 389 /* Allocate the LLDPDU */ 390 ret = i40e_allocate_virt_mem(hw, &mem, I40E_LLDPDU_SIZE); 391 if (ret) 392 return ret; 393 394 lldpmib = (u8 *)mem.va; 395 ret = i40e_aq_get_lldp_mib(hw, bridgetype, mib_type, 396 (void *)lldpmib, I40E_LLDPDU_SIZE, 397 NULL, NULL, NULL); 398 if (ret) 399 goto free_mem; 400 401 /* Parse LLDP MIB to get dcb configuration */ 402 ret = i40e_lldp_to_dcb_config(lldpmib, dcbcfg); 403 404 free_mem: 405 i40e_free_virt_mem(hw, &mem); 406 return ret; 407 } 408 409 /** 410 * i40e_get_dcb_config 411 * @hw: pointer to the hw struct 412 * 413 * Get DCB configuration from the Firmware 414 **/ 415 i40e_status i40e_get_dcb_config(struct i40e_hw *hw) 416 { 417 i40e_status ret = 0; 418 419 /* Get Local DCB Config */ 420 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_LOCAL, 0, 421 &hw->local_dcbx_config); 422 if (ret) 423 goto out; 424 425 /* Get Remote DCB Config */ 426 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE, 427 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE, 428 &hw->remote_dcbx_config); 429 out: 430 return ret; 431 } 432 433 /** 434 * i40e_init_dcb 435 * @hw: pointer to the hw struct 436 * 437 * Update DCB configuration from the Firmware 438 **/ 439 i40e_status i40e_init_dcb(struct i40e_hw *hw) 440 { 441 i40e_status ret = 0; 442 443 if (!hw->func_caps.dcb) 444 return ret; 445 446 /* Get DCBX status */ 447 ret = i40e_get_dcbx_status(hw, &hw->dcbx_status); 448 if (ret) 449 return ret; 450 451 /* Check the DCBX Status */ 452 switch (hw->dcbx_status) { 453 case I40E_DCBX_STATUS_DONE: 454 case I40E_DCBX_STATUS_IN_PROGRESS: 455 /* Get current DCBX configuration */ 456 ret = i40e_get_dcb_config(hw); 457 break; 458 case I40E_DCBX_STATUS_DISABLED: 459 return ret; 460 case I40E_DCBX_STATUS_NOT_STARTED: 461 case I40E_DCBX_STATUS_MULTIPLE_PEERS: 462 default: 463 break; 464 } 465 466 /* Configure the LLDP MIB change event */ 467 ret = i40e_aq_cfg_lldp_mib_change_event(hw, true, NULL); 468 if (ret) 469 return ret; 470 471 return ret; 472 } 473