hn_rndis.c revision 324474
1/*- 2 * Copyright (c) 2009-2012,2016-2017 Microsoft Corp. 3 * Copyright (c) 2010-2012 Citrix Inc. 4 * Copyright (c) 2012 NetApp Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice unmodified, this list of conditions, and the following 12 * disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29#include <sys/cdefs.h> 30__FBSDID("$FreeBSD: stable/11/sys/dev/hyperv/netvsc/hn_rndis.c 324474 2017-10-10 05:38:07Z sephe $"); 31 32#include "opt_inet6.h" 33#include "opt_inet.h" 34 35#include <sys/param.h> 36#include <sys/socket.h> 37#include <sys/systm.h> 38#include <sys/taskqueue.h> 39 40#include <machine/atomic.h> 41 42#include <net/ethernet.h> 43#include <net/if.h> 44#include <net/if_var.h> 45#include <net/if_media.h> 46#include <net/rndis.h> 47 48#include <netinet/in.h> 49#include <netinet/ip.h> 50#include <netinet/tcp_lro.h> 51 52#include <dev/hyperv/include/hyperv.h> 53#include <dev/hyperv/include/hyperv_busdma.h> 54#include <dev/hyperv/include/vmbus.h> 55#include <dev/hyperv/include/vmbus_xact.h> 56 57#include <dev/hyperv/netvsc/ndis.h> 58#include <dev/hyperv/netvsc/if_hnreg.h> 59#include <dev/hyperv/netvsc/if_hnvar.h> 60#include <dev/hyperv/netvsc/hn_nvs.h> 61#include <dev/hyperv/netvsc/hn_rndis.h> 62 63#define HN_RNDIS_RID_COMPAT_MASK 0xffff 64#define HN_RNDIS_RID_COMPAT_MAX HN_RNDIS_RID_COMPAT_MASK 65 66#define HN_RNDIS_XFER_SIZE 2048 67 68#define HN_NDIS_TXCSUM_CAP_IP4 \ 69 (NDIS_TXCSUM_CAP_IP4 | NDIS_TXCSUM_CAP_IP4OPT) 70#define HN_NDIS_TXCSUM_CAP_TCP4 \ 71 (NDIS_TXCSUM_CAP_TCP4 | NDIS_TXCSUM_CAP_TCP4OPT) 72#define HN_NDIS_TXCSUM_CAP_TCP6 \ 73 (NDIS_TXCSUM_CAP_TCP6 | NDIS_TXCSUM_CAP_TCP6OPT | \ 74 NDIS_TXCSUM_CAP_IP6EXT) 75#define HN_NDIS_TXCSUM_CAP_UDP6 \ 76 (NDIS_TXCSUM_CAP_UDP6 | NDIS_TXCSUM_CAP_IP6EXT) 77#define HN_NDIS_LSOV2_CAP_IP6 \ 78 (NDIS_LSOV2_CAP_IP6EXT | NDIS_LSOV2_CAP_TCP6OPT) 79 80static const void *hn_rndis_xact_exec1(struct hn_softc *, 81 struct vmbus_xact *, size_t, 82 struct hn_nvs_sendctx *, size_t *); 83static const void *hn_rndis_xact_execute(struct hn_softc *, 84 struct vmbus_xact *, uint32_t, size_t, size_t *, 85 uint32_t); 86static int hn_rndis_query(struct hn_softc *, uint32_t, 87 const void *, size_t, void *, size_t *); 88static int hn_rndis_query2(struct hn_softc *, uint32_t, 89 const void *, size_t, void *, size_t *, size_t); 90static int hn_rndis_set(struct hn_softc *, uint32_t, 91 const void *, size_t); 92static int hn_rndis_init(struct hn_softc *); 93static int hn_rndis_halt(struct hn_softc *); 94static int hn_rndis_conf_offload(struct hn_softc *, int); 95static int hn_rndis_query_hwcaps(struct hn_softc *, 96 struct ndis_offload *); 97 98static __inline uint32_t 99hn_rndis_rid(struct hn_softc *sc) 100{ 101 uint32_t rid; 102 103again: 104 rid = atomic_fetchadd_int(&sc->hn_rndis_rid, 1); 105 if (rid == 0) 106 goto again; 107 108 /* Use upper 16 bits for non-compat RNDIS messages. */ 109 return ((rid & 0xffff) << 16); 110} 111 112void 113hn_rndis_rx_ctrl(struct hn_softc *sc, const void *data, int dlen) 114{ 115 const struct rndis_comp_hdr *comp; 116 const struct rndis_msghdr *hdr; 117 118 KASSERT(dlen >= sizeof(*hdr), ("invalid RNDIS msg\n")); 119 hdr = data; 120 121 switch (hdr->rm_type) { 122 case REMOTE_NDIS_INITIALIZE_CMPLT: 123 case REMOTE_NDIS_QUERY_CMPLT: 124 case REMOTE_NDIS_SET_CMPLT: 125 case REMOTE_NDIS_KEEPALIVE_CMPLT: /* unused */ 126 if (dlen < sizeof(*comp)) { 127 if_printf(sc->hn_ifp, "invalid RNDIS cmplt\n"); 128 return; 129 } 130 comp = data; 131 132 KASSERT(comp->rm_rid > HN_RNDIS_RID_COMPAT_MAX, 133 ("invalid RNDIS rid 0x%08x\n", comp->rm_rid)); 134 vmbus_xact_ctx_wakeup(sc->hn_xact, comp, dlen); 135 break; 136 137 case REMOTE_NDIS_RESET_CMPLT: 138 /* 139 * Reset completed, no rid. 140 * 141 * NOTE: 142 * RESET is not issued by hn(4), so this message should 143 * _not_ be observed. 144 */ 145 if_printf(sc->hn_ifp, "RESET cmplt received\n"); 146 break; 147 148 default: 149 if_printf(sc->hn_ifp, "unknown RNDIS msg 0x%x\n", 150 hdr->rm_type); 151 break; 152 } 153} 154 155int 156hn_rndis_get_eaddr(struct hn_softc *sc, uint8_t *eaddr) 157{ 158 size_t eaddr_len; 159 int error; 160 161 eaddr_len = ETHER_ADDR_LEN; 162 error = hn_rndis_query(sc, OID_802_3_PERMANENT_ADDRESS, NULL, 0, 163 eaddr, &eaddr_len); 164 if (error) 165 return (error); 166 if (eaddr_len != ETHER_ADDR_LEN) { 167 if_printf(sc->hn_ifp, "invalid eaddr len %zu\n", eaddr_len); 168 return (EINVAL); 169 } 170 return (0); 171} 172 173int 174hn_rndis_get_linkstatus(struct hn_softc *sc, uint32_t *link_status) 175{ 176 size_t size; 177 int error; 178 179 size = sizeof(*link_status); 180 error = hn_rndis_query(sc, OID_GEN_MEDIA_CONNECT_STATUS, NULL, 0, 181 link_status, &size); 182 if (error) 183 return (error); 184 if (size != sizeof(uint32_t)) { 185 if_printf(sc->hn_ifp, "invalid link status len %zu\n", size); 186 return (EINVAL); 187 } 188 return (0); 189} 190 191static const void * 192hn_rndis_xact_exec1(struct hn_softc *sc, struct vmbus_xact *xact, size_t reqlen, 193 struct hn_nvs_sendctx *sndc, size_t *comp_len) 194{ 195 struct vmbus_gpa gpa[HN_XACT_REQ_PGCNT]; 196 int gpa_cnt, error; 197 bus_addr_t paddr; 198 199 KASSERT(reqlen <= HN_XACT_REQ_SIZE && reqlen > 0, 200 ("invalid request length %zu", reqlen)); 201 202 /* 203 * Setup the SG list. 204 */ 205 paddr = vmbus_xact_req_paddr(xact); 206 KASSERT((paddr & PAGE_MASK) == 0, 207 ("vmbus xact request is not page aligned 0x%jx", (uintmax_t)paddr)); 208 for (gpa_cnt = 0; gpa_cnt < HN_XACT_REQ_PGCNT; ++gpa_cnt) { 209 int len = PAGE_SIZE; 210 211 if (reqlen == 0) 212 break; 213 if (reqlen < len) 214 len = reqlen; 215 216 gpa[gpa_cnt].gpa_page = atop(paddr) + gpa_cnt; 217 gpa[gpa_cnt].gpa_len = len; 218 gpa[gpa_cnt].gpa_ofs = 0; 219 220 reqlen -= len; 221 } 222 KASSERT(reqlen == 0, ("still have %zu request data left", reqlen)); 223 224 /* 225 * Send this RNDIS control message and wait for its completion 226 * message. 227 */ 228 vmbus_xact_activate(xact); 229 error = hn_nvs_send_rndis_ctrl(sc->hn_prichan, sndc, gpa, gpa_cnt); 230 if (error) { 231 vmbus_xact_deactivate(xact); 232 if_printf(sc->hn_ifp, "RNDIS ctrl send failed: %d\n", error); 233 return (NULL); 234 } 235 return (vmbus_chan_xact_wait(sc->hn_prichan, xact, comp_len, 236 HN_CAN_SLEEP(sc))); 237} 238 239static const void * 240hn_rndis_xact_execute(struct hn_softc *sc, struct vmbus_xact *xact, uint32_t rid, 241 size_t reqlen, size_t *comp_len0, uint32_t comp_type) 242{ 243 const struct rndis_comp_hdr *comp; 244 size_t comp_len, min_complen = *comp_len0; 245 246 KASSERT(rid > HN_RNDIS_RID_COMPAT_MAX, ("invalid rid %u\n", rid)); 247 KASSERT(min_complen >= sizeof(*comp), 248 ("invalid minimum complete len %zu", min_complen)); 249 250 /* 251 * Execute the xact setup by the caller. 252 */ 253 comp = hn_rndis_xact_exec1(sc, xact, reqlen, &hn_nvs_sendctx_none, 254 &comp_len); 255 if (comp == NULL) 256 return (NULL); 257 258 /* 259 * Check this RNDIS complete message. 260 */ 261 if (comp_len < min_complen) { 262 if (comp_len >= sizeof(*comp)) { 263 /* rm_status field is valid */ 264 if_printf(sc->hn_ifp, "invalid RNDIS comp len %zu, " 265 "status 0x%08x\n", comp_len, comp->rm_status); 266 } else { 267 if_printf(sc->hn_ifp, "invalid RNDIS comp len %zu\n", 268 comp_len); 269 } 270 return (NULL); 271 } 272 if (comp->rm_len < min_complen) { 273 if_printf(sc->hn_ifp, "invalid RNDIS comp msglen %u\n", 274 comp->rm_len); 275 return (NULL); 276 } 277 if (comp->rm_type != comp_type) { 278 if_printf(sc->hn_ifp, "unexpected RNDIS comp 0x%08x, " 279 "expect 0x%08x\n", comp->rm_type, comp_type); 280 return (NULL); 281 } 282 if (comp->rm_rid != rid) { 283 if_printf(sc->hn_ifp, "RNDIS comp rid mismatch %u, " 284 "expect %u\n", comp->rm_rid, rid); 285 return (NULL); 286 } 287 /* All pass! */ 288 *comp_len0 = comp_len; 289 return (comp); 290} 291 292static int 293hn_rndis_query(struct hn_softc *sc, uint32_t oid, 294 const void *idata, size_t idlen, void *odata, size_t *odlen0) 295{ 296 297 return (hn_rndis_query2(sc, oid, idata, idlen, odata, odlen0, *odlen0)); 298} 299 300static int 301hn_rndis_query2(struct hn_softc *sc, uint32_t oid, 302 const void *idata, size_t idlen, void *odata, size_t *odlen0, 303 size_t min_odlen) 304{ 305 struct rndis_query_req *req; 306 const struct rndis_query_comp *comp; 307 struct vmbus_xact *xact; 308 size_t reqlen, odlen = *odlen0, comp_len; 309 int error, ofs; 310 uint32_t rid; 311 312 reqlen = sizeof(*req) + idlen; 313 xact = vmbus_xact_get(sc->hn_xact, reqlen); 314 if (xact == NULL) { 315 if_printf(sc->hn_ifp, "no xact for RNDIS query 0x%08x\n", oid); 316 return (ENXIO); 317 } 318 rid = hn_rndis_rid(sc); 319 req = vmbus_xact_req_data(xact); 320 req->rm_type = REMOTE_NDIS_QUERY_MSG; 321 req->rm_len = reqlen; 322 req->rm_rid = rid; 323 req->rm_oid = oid; 324 /* 325 * XXX 326 * This is _not_ RNDIS Spec conforming: 327 * "This MUST be set to 0 when there is no input data 328 * associated with the OID." 329 * 330 * If this field was set to 0 according to the RNDIS Spec, 331 * Hyper-V would set non-SUCCESS status in the query 332 * completion. 333 */ 334 req->rm_infobufoffset = RNDIS_QUERY_REQ_INFOBUFOFFSET; 335 336 if (idlen > 0) { 337 req->rm_infobuflen = idlen; 338 /* Input data immediately follows RNDIS query. */ 339 memcpy(req + 1, idata, idlen); 340 } 341 342 comp_len = sizeof(*comp) + min_odlen; 343 comp = hn_rndis_xact_execute(sc, xact, rid, reqlen, &comp_len, 344 REMOTE_NDIS_QUERY_CMPLT); 345 if (comp == NULL) { 346 if_printf(sc->hn_ifp, "exec RNDIS query 0x%08x failed\n", oid); 347 error = EIO; 348 goto done; 349 } 350 351 if (comp->rm_status != RNDIS_STATUS_SUCCESS) { 352 if_printf(sc->hn_ifp, "RNDIS query 0x%08x failed: " 353 "status 0x%08x\n", oid, comp->rm_status); 354 error = EIO; 355 goto done; 356 } 357 if (comp->rm_infobuflen == 0 || comp->rm_infobufoffset == 0) { 358 /* No output data! */ 359 if_printf(sc->hn_ifp, "RNDIS query 0x%08x, no data\n", oid); 360 *odlen0 = 0; 361 error = 0; 362 goto done; 363 } 364 365 /* 366 * Check output data length and offset. 367 */ 368 /* ofs is the offset from the beginning of comp. */ 369 ofs = RNDIS_QUERY_COMP_INFOBUFOFFSET_ABS(comp->rm_infobufoffset); 370 if (ofs < sizeof(*comp) || ofs + comp->rm_infobuflen > comp_len) { 371 if_printf(sc->hn_ifp, "RNDIS query invalid comp ib off/len, " 372 "%u/%u\n", comp->rm_infobufoffset, comp->rm_infobuflen); 373 error = EINVAL; 374 goto done; 375 } 376 377 /* 378 * Save output data. 379 */ 380 if (comp->rm_infobuflen < odlen) 381 odlen = comp->rm_infobuflen; 382 memcpy(odata, ((const uint8_t *)comp) + ofs, odlen); 383 *odlen0 = odlen; 384 385 error = 0; 386done: 387 vmbus_xact_put(xact); 388 return (error); 389} 390 391int 392hn_rndis_query_rsscaps(struct hn_softc *sc, int *rxr_cnt0) 393{ 394 struct ndis_rss_caps in, caps; 395 size_t caps_len; 396 int error, indsz, rxr_cnt, hash_fnidx; 397 uint32_t hash_func = 0, hash_types = 0; 398 399 *rxr_cnt0 = 0; 400 401 if (sc->hn_ndis_ver < HN_NDIS_VERSION_6_20) 402 return (EOPNOTSUPP); 403 404 memset(&in, 0, sizeof(in)); 405 in.ndis_hdr.ndis_type = NDIS_OBJTYPE_RSS_CAPS; 406 in.ndis_hdr.ndis_rev = NDIS_RSS_CAPS_REV_2; 407 in.ndis_hdr.ndis_size = NDIS_RSS_CAPS_SIZE; 408 409 caps_len = NDIS_RSS_CAPS_SIZE; 410 error = hn_rndis_query2(sc, OID_GEN_RECEIVE_SCALE_CAPABILITIES, 411 &in, NDIS_RSS_CAPS_SIZE, &caps, &caps_len, NDIS_RSS_CAPS_SIZE_6_0); 412 if (error) 413 return (error); 414 415 /* 416 * Preliminary verification. 417 */ 418 if (caps.ndis_hdr.ndis_type != NDIS_OBJTYPE_RSS_CAPS) { 419 if_printf(sc->hn_ifp, "invalid NDIS objtype 0x%02x\n", 420 caps.ndis_hdr.ndis_type); 421 return (EINVAL); 422 } 423 if (caps.ndis_hdr.ndis_rev < NDIS_RSS_CAPS_REV_1) { 424 if_printf(sc->hn_ifp, "invalid NDIS objrev 0x%02x\n", 425 caps.ndis_hdr.ndis_rev); 426 return (EINVAL); 427 } 428 if (caps.ndis_hdr.ndis_size > caps_len) { 429 if_printf(sc->hn_ifp, "invalid NDIS objsize %u, " 430 "data size %zu\n", caps.ndis_hdr.ndis_size, caps_len); 431 return (EINVAL); 432 } else if (caps.ndis_hdr.ndis_size < NDIS_RSS_CAPS_SIZE_6_0) { 433 if_printf(sc->hn_ifp, "invalid NDIS objsize %u\n", 434 caps.ndis_hdr.ndis_size); 435 return (EINVAL); 436 } 437 438 /* 439 * Save information for later RSS configuration. 440 */ 441 if (caps.ndis_nrxr == 0) { 442 if_printf(sc->hn_ifp, "0 RX rings!?\n"); 443 return (EINVAL); 444 } 445 if (bootverbose) 446 if_printf(sc->hn_ifp, "%u RX rings\n", caps.ndis_nrxr); 447 rxr_cnt = caps.ndis_nrxr; 448 449 if (caps.ndis_hdr.ndis_size == NDIS_RSS_CAPS_SIZE && 450 caps.ndis_hdr.ndis_rev >= NDIS_RSS_CAPS_REV_2) { 451 if (caps.ndis_nind > NDIS_HASH_INDCNT) { 452 if_printf(sc->hn_ifp, 453 "too many RSS indirect table entries %u\n", 454 caps.ndis_nind); 455 return (EOPNOTSUPP); 456 } 457 if (!powerof2(caps.ndis_nind)) { 458 if_printf(sc->hn_ifp, "RSS indirect table size is not " 459 "power-of-2 %u\n", caps.ndis_nind); 460 } 461 462 if (bootverbose) { 463 if_printf(sc->hn_ifp, "RSS indirect table size %u\n", 464 caps.ndis_nind); 465 } 466 indsz = caps.ndis_nind; 467 } else { 468 indsz = NDIS_HASH_INDCNT; 469 } 470 if (indsz < rxr_cnt) { 471 if_printf(sc->hn_ifp, "# of RX rings (%d) > " 472 "RSS indirect table size %d\n", rxr_cnt, indsz); 473 rxr_cnt = indsz; 474 } 475 476 /* 477 * NOTE: 478 * Toeplitz is at the lowest bit, and it is prefered; so ffs(), 479 * instead of fls(), is used here. 480 */ 481 hash_fnidx = ffs(caps.ndis_caps & NDIS_RSS_CAP_HASHFUNC_MASK); 482 if (hash_fnidx == 0) { 483 if_printf(sc->hn_ifp, "no hash functions, caps 0x%08x\n", 484 caps.ndis_caps); 485 return (EOPNOTSUPP); 486 } 487 hash_func = 1 << (hash_fnidx - 1); /* ffs is 1-based */ 488 489 if (caps.ndis_caps & NDIS_RSS_CAP_IPV4) 490 hash_types |= NDIS_HASH_IPV4 | NDIS_HASH_TCP_IPV4; 491 if (caps.ndis_caps & NDIS_RSS_CAP_IPV6) 492 hash_types |= NDIS_HASH_IPV6 | NDIS_HASH_TCP_IPV6; 493 if (caps.ndis_caps & NDIS_RSS_CAP_IPV6_EX) 494 hash_types |= NDIS_HASH_IPV6_EX | NDIS_HASH_TCP_IPV6_EX; 495 if (hash_types == 0) { 496 if_printf(sc->hn_ifp, "no hash types, caps 0x%08x\n", 497 caps.ndis_caps); 498 return (EOPNOTSUPP); 499 } 500 if (bootverbose) 501 if_printf(sc->hn_ifp, "RSS caps %#x\n", caps.ndis_caps); 502 503 /* Commit! */ 504 sc->hn_rss_ind_size = indsz; 505 sc->hn_rss_hash = hash_func | hash_types; 506 *rxr_cnt0 = rxr_cnt; 507 return (0); 508} 509 510static int 511hn_rndis_set(struct hn_softc *sc, uint32_t oid, const void *data, size_t dlen) 512{ 513 struct rndis_set_req *req; 514 const struct rndis_set_comp *comp; 515 struct vmbus_xact *xact; 516 size_t reqlen, comp_len; 517 uint32_t rid; 518 int error; 519 520 KASSERT(dlen > 0, ("invalid dlen %zu", dlen)); 521 522 reqlen = sizeof(*req) + dlen; 523 xact = vmbus_xact_get(sc->hn_xact, reqlen); 524 if (xact == NULL) { 525 if_printf(sc->hn_ifp, "no xact for RNDIS set 0x%08x\n", oid); 526 return (ENXIO); 527 } 528 rid = hn_rndis_rid(sc); 529 req = vmbus_xact_req_data(xact); 530 req->rm_type = REMOTE_NDIS_SET_MSG; 531 req->rm_len = reqlen; 532 req->rm_rid = rid; 533 req->rm_oid = oid; 534 req->rm_infobuflen = dlen; 535 req->rm_infobufoffset = RNDIS_SET_REQ_INFOBUFOFFSET; 536 /* Data immediately follows RNDIS set. */ 537 memcpy(req + 1, data, dlen); 538 539 comp_len = sizeof(*comp); 540 comp = hn_rndis_xact_execute(sc, xact, rid, reqlen, &comp_len, 541 REMOTE_NDIS_SET_CMPLT); 542 if (comp == NULL) { 543 if_printf(sc->hn_ifp, "exec RNDIS set 0x%08x failed\n", oid); 544 error = EIO; 545 goto done; 546 } 547 548 if (comp->rm_status != RNDIS_STATUS_SUCCESS) { 549 if_printf(sc->hn_ifp, "RNDIS set 0x%08x failed: " 550 "status 0x%08x\n", oid, comp->rm_status); 551 error = EIO; 552 goto done; 553 } 554 error = 0; 555done: 556 vmbus_xact_put(xact); 557 return (error); 558} 559 560static int 561hn_rndis_conf_offload(struct hn_softc *sc, int mtu) 562{ 563 struct ndis_offload hwcaps; 564 struct ndis_offload_params params; 565 uint32_t caps = 0; 566 size_t paramsz; 567 int error, tso_maxsz, tso_minsg; 568 569 error = hn_rndis_query_hwcaps(sc, &hwcaps); 570 if (error) { 571 if_printf(sc->hn_ifp, "hwcaps query failed: %d\n", error); 572 return (error); 573 } 574 575 /* NOTE: 0 means "no change" */ 576 memset(¶ms, 0, sizeof(params)); 577 578 params.ndis_hdr.ndis_type = NDIS_OBJTYPE_DEFAULT; 579 if (sc->hn_ndis_ver < HN_NDIS_VERSION_6_30) { 580 params.ndis_hdr.ndis_rev = NDIS_OFFLOAD_PARAMS_REV_2; 581 paramsz = NDIS_OFFLOAD_PARAMS_SIZE_6_1; 582 } else { 583 params.ndis_hdr.ndis_rev = NDIS_OFFLOAD_PARAMS_REV_3; 584 paramsz = NDIS_OFFLOAD_PARAMS_SIZE; 585 } 586 params.ndis_hdr.ndis_size = paramsz; 587 588 /* 589 * TSO4/TSO6 setup. 590 */ 591 tso_maxsz = IP_MAXPACKET; 592 tso_minsg = 2; 593 if (hwcaps.ndis_lsov2.ndis_ip4_encap & NDIS_OFFLOAD_ENCAP_8023) { 594 caps |= HN_CAP_TSO4; 595 params.ndis_lsov2_ip4 = NDIS_OFFLOAD_LSOV2_ON; 596 597 if (hwcaps.ndis_lsov2.ndis_ip4_maxsz < tso_maxsz) 598 tso_maxsz = hwcaps.ndis_lsov2.ndis_ip4_maxsz; 599 if (hwcaps.ndis_lsov2.ndis_ip4_minsg > tso_minsg) 600 tso_minsg = hwcaps.ndis_lsov2.ndis_ip4_minsg; 601 } 602 if ((hwcaps.ndis_lsov2.ndis_ip6_encap & NDIS_OFFLOAD_ENCAP_8023) && 603 (hwcaps.ndis_lsov2.ndis_ip6_opts & HN_NDIS_LSOV2_CAP_IP6) == 604 HN_NDIS_LSOV2_CAP_IP6) { 605 caps |= HN_CAP_TSO6; 606 params.ndis_lsov2_ip6 = NDIS_OFFLOAD_LSOV2_ON; 607 608 if (hwcaps.ndis_lsov2.ndis_ip6_maxsz < tso_maxsz) 609 tso_maxsz = hwcaps.ndis_lsov2.ndis_ip6_maxsz; 610 if (hwcaps.ndis_lsov2.ndis_ip6_minsg > tso_minsg) 611 tso_minsg = hwcaps.ndis_lsov2.ndis_ip6_minsg; 612 } 613 sc->hn_ndis_tso_szmax = 0; 614 sc->hn_ndis_tso_sgmin = 0; 615 if (caps & (HN_CAP_TSO4 | HN_CAP_TSO6)) { 616 KASSERT(tso_maxsz <= IP_MAXPACKET, 617 ("invalid NDIS TSO maxsz %d", tso_maxsz)); 618 KASSERT(tso_minsg >= 2, 619 ("invalid NDIS TSO minsg %d", tso_minsg)); 620 if (tso_maxsz < tso_minsg * mtu) { 621 if_printf(sc->hn_ifp, "invalid NDIS TSO config: " 622 "maxsz %d, minsg %d, mtu %d; " 623 "disable TSO4 and TSO6\n", 624 tso_maxsz, tso_minsg, mtu); 625 caps &= ~(HN_CAP_TSO4 | HN_CAP_TSO6); 626 params.ndis_lsov2_ip4 = NDIS_OFFLOAD_LSOV2_OFF; 627 params.ndis_lsov2_ip6 = NDIS_OFFLOAD_LSOV2_OFF; 628 } else { 629 sc->hn_ndis_tso_szmax = tso_maxsz; 630 sc->hn_ndis_tso_sgmin = tso_minsg; 631 if (bootverbose) { 632 if_printf(sc->hn_ifp, "NDIS TSO " 633 "szmax %d sgmin %d\n", 634 sc->hn_ndis_tso_szmax, 635 sc->hn_ndis_tso_sgmin); 636 } 637 } 638 } 639 640 /* IPv4 checksum */ 641 if ((hwcaps.ndis_csum.ndis_ip4_txcsum & HN_NDIS_TXCSUM_CAP_IP4) == 642 HN_NDIS_TXCSUM_CAP_IP4) { 643 caps |= HN_CAP_IPCS; 644 params.ndis_ip4csum = NDIS_OFFLOAD_PARAM_TX; 645 } 646 if (hwcaps.ndis_csum.ndis_ip4_rxcsum & NDIS_RXCSUM_CAP_IP4) { 647 if (params.ndis_ip4csum == NDIS_OFFLOAD_PARAM_TX) 648 params.ndis_ip4csum = NDIS_OFFLOAD_PARAM_TXRX; 649 else 650 params.ndis_ip4csum = NDIS_OFFLOAD_PARAM_RX; 651 } 652 653 /* TCP4 checksum */ 654 if ((hwcaps.ndis_csum.ndis_ip4_txcsum & HN_NDIS_TXCSUM_CAP_TCP4) == 655 HN_NDIS_TXCSUM_CAP_TCP4) { 656 caps |= HN_CAP_TCP4CS; 657 params.ndis_tcp4csum = NDIS_OFFLOAD_PARAM_TX; 658 } 659 if (hwcaps.ndis_csum.ndis_ip4_rxcsum & NDIS_RXCSUM_CAP_TCP4) { 660 if (params.ndis_tcp4csum == NDIS_OFFLOAD_PARAM_TX) 661 params.ndis_tcp4csum = NDIS_OFFLOAD_PARAM_TXRX; 662 else 663 params.ndis_tcp4csum = NDIS_OFFLOAD_PARAM_RX; 664 } 665 666 /* UDP4 checksum */ 667 if (hwcaps.ndis_csum.ndis_ip4_txcsum & NDIS_TXCSUM_CAP_UDP4) { 668 caps |= HN_CAP_UDP4CS; 669 params.ndis_udp4csum = NDIS_OFFLOAD_PARAM_TX; 670 } 671 if (hwcaps.ndis_csum.ndis_ip4_rxcsum & NDIS_RXCSUM_CAP_UDP4) { 672 if (params.ndis_udp4csum == NDIS_OFFLOAD_PARAM_TX) 673 params.ndis_udp4csum = NDIS_OFFLOAD_PARAM_TXRX; 674 else 675 params.ndis_udp4csum = NDIS_OFFLOAD_PARAM_RX; 676 } 677 678 /* TCP6 checksum */ 679 if ((hwcaps.ndis_csum.ndis_ip6_txcsum & HN_NDIS_TXCSUM_CAP_TCP6) == 680 HN_NDIS_TXCSUM_CAP_TCP6) { 681 caps |= HN_CAP_TCP6CS; 682 params.ndis_tcp6csum = NDIS_OFFLOAD_PARAM_TX; 683 } 684 if (hwcaps.ndis_csum.ndis_ip6_rxcsum & NDIS_RXCSUM_CAP_TCP6) { 685 if (params.ndis_tcp6csum == NDIS_OFFLOAD_PARAM_TX) 686 params.ndis_tcp6csum = NDIS_OFFLOAD_PARAM_TXRX; 687 else 688 params.ndis_tcp6csum = NDIS_OFFLOAD_PARAM_RX; 689 } 690 691 /* UDP6 checksum */ 692 if ((hwcaps.ndis_csum.ndis_ip6_txcsum & HN_NDIS_TXCSUM_CAP_UDP6) == 693 HN_NDIS_TXCSUM_CAP_UDP6) { 694 caps |= HN_CAP_UDP6CS; 695 params.ndis_udp6csum = NDIS_OFFLOAD_PARAM_TX; 696 } 697 if (hwcaps.ndis_csum.ndis_ip6_rxcsum & NDIS_RXCSUM_CAP_UDP6) { 698 if (params.ndis_udp6csum == NDIS_OFFLOAD_PARAM_TX) 699 params.ndis_udp6csum = NDIS_OFFLOAD_PARAM_TXRX; 700 else 701 params.ndis_udp6csum = NDIS_OFFLOAD_PARAM_RX; 702 } 703 704 if (bootverbose) { 705 if_printf(sc->hn_ifp, "offload csum: " 706 "ip4 %u, tcp4 %u, udp4 %u, tcp6 %u, udp6 %u\n", 707 params.ndis_ip4csum, 708 params.ndis_tcp4csum, 709 params.ndis_udp4csum, 710 params.ndis_tcp6csum, 711 params.ndis_udp6csum); 712 if_printf(sc->hn_ifp, "offload lsov2: ip4 %u, ip6 %u\n", 713 params.ndis_lsov2_ip4, 714 params.ndis_lsov2_ip6); 715 } 716 717 error = hn_rndis_set(sc, OID_TCP_OFFLOAD_PARAMETERS, ¶ms, paramsz); 718 if (error) { 719 if_printf(sc->hn_ifp, "offload config failed: %d\n", error); 720 return (error); 721 } 722 723 if (bootverbose) 724 if_printf(sc->hn_ifp, "offload config done\n"); 725 sc->hn_caps |= caps; 726 return (0); 727} 728 729int 730hn_rndis_conf_rss(struct hn_softc *sc, uint16_t flags) 731{ 732 struct ndis_rssprm_toeplitz *rss = &sc->hn_rss; 733 struct ndis_rss_params *prm = &rss->rss_params; 734 int error, rss_size; 735 736 /* 737 * Only NDIS 6.20+ is supported: 738 * We only support 4bytes element in indirect table, which has been 739 * adopted since NDIS 6.20. 740 */ 741 KASSERT(sc->hn_ndis_ver >= HN_NDIS_VERSION_6_20, 742 ("NDIS 6.20+ is required, NDIS version 0x%08x", sc->hn_ndis_ver)); 743 744 /* XXX only one can be specified through, popcnt? */ 745 KASSERT((sc->hn_rss_hash & NDIS_HASH_FUNCTION_MASK), ("no hash func")); 746 KASSERT((sc->hn_rss_hash & NDIS_HASH_TYPE_MASK), ("no hash types")); 747 KASSERT(sc->hn_rss_ind_size > 0, ("no indirect table size")); 748 749 if (bootverbose) { 750 if_printf(sc->hn_ifp, "RSS indirect table size %d, " 751 "hash 0x%08x\n", sc->hn_rss_ind_size, sc->hn_rss_hash); 752 } 753 754 /* 755 * NOTE: 756 * DO NOT whack rss_key and rss_ind, which are setup by the caller. 757 */ 758 memset(prm, 0, sizeof(*prm)); 759 rss_size = NDIS_RSSPRM_TOEPLITZ_SIZE(sc->hn_rss_ind_size); 760 761 prm->ndis_hdr.ndis_type = NDIS_OBJTYPE_RSS_PARAMS; 762 prm->ndis_hdr.ndis_rev = NDIS_RSS_PARAMS_REV_2; 763 prm->ndis_hdr.ndis_size = rss_size; 764 prm->ndis_flags = flags; 765 prm->ndis_hash = sc->hn_rss_hash; 766 prm->ndis_indsize = sizeof(rss->rss_ind[0]) * sc->hn_rss_ind_size; 767 prm->ndis_indoffset = 768 __offsetof(struct ndis_rssprm_toeplitz, rss_ind[0]); 769 prm->ndis_keysize = sizeof(rss->rss_key); 770 prm->ndis_keyoffset = 771 __offsetof(struct ndis_rssprm_toeplitz, rss_key[0]); 772 773 error = hn_rndis_set(sc, OID_GEN_RECEIVE_SCALE_PARAMETERS, 774 rss, rss_size); 775 if (error) { 776 if_printf(sc->hn_ifp, "RSS config failed: %d\n", error); 777 } else { 778 if (bootverbose) 779 if_printf(sc->hn_ifp, "RSS config done\n"); 780 } 781 return (error); 782} 783 784int 785hn_rndis_set_rxfilter(struct hn_softc *sc, uint32_t filter) 786{ 787 int error; 788 789 error = hn_rndis_set(sc, OID_GEN_CURRENT_PACKET_FILTER, 790 &filter, sizeof(filter)); 791 if (error) { 792 if_printf(sc->hn_ifp, "set RX filter 0x%08x failed: %d\n", 793 filter, error); 794 } else { 795 if (bootverbose) { 796 if_printf(sc->hn_ifp, "set RX filter 0x%08x done\n", 797 filter); 798 } 799 } 800 return (error); 801} 802 803static int 804hn_rndis_init(struct hn_softc *sc) 805{ 806 struct rndis_init_req *req; 807 const struct rndis_init_comp *comp; 808 struct vmbus_xact *xact; 809 size_t comp_len; 810 uint32_t rid; 811 int error; 812 813 xact = vmbus_xact_get(sc->hn_xact, sizeof(*req)); 814 if (xact == NULL) { 815 if_printf(sc->hn_ifp, "no xact for RNDIS init\n"); 816 return (ENXIO); 817 } 818 rid = hn_rndis_rid(sc); 819 req = vmbus_xact_req_data(xact); 820 req->rm_type = REMOTE_NDIS_INITIALIZE_MSG; 821 req->rm_len = sizeof(*req); 822 req->rm_rid = rid; 823 req->rm_ver_major = RNDIS_VERSION_MAJOR; 824 req->rm_ver_minor = RNDIS_VERSION_MINOR; 825 req->rm_max_xfersz = HN_RNDIS_XFER_SIZE; 826 827 comp_len = RNDIS_INIT_COMP_SIZE_MIN; 828 comp = hn_rndis_xact_execute(sc, xact, rid, sizeof(*req), &comp_len, 829 REMOTE_NDIS_INITIALIZE_CMPLT); 830 if (comp == NULL) { 831 if_printf(sc->hn_ifp, "exec RNDIS init failed\n"); 832 error = EIO; 833 goto done; 834 } 835 836 if (comp->rm_status != RNDIS_STATUS_SUCCESS) { 837 if_printf(sc->hn_ifp, "RNDIS init failed: status 0x%08x\n", 838 comp->rm_status); 839 error = EIO; 840 goto done; 841 } 842 sc->hn_rndis_agg_size = comp->rm_pktmaxsz; 843 sc->hn_rndis_agg_pkts = comp->rm_pktmaxcnt; 844 sc->hn_rndis_agg_align = 1U << comp->rm_align; 845 846 if (sc->hn_rndis_agg_align < sizeof(uint32_t)) { 847 /* 848 * The RNDIS packet messsage encap assumes that the RNDIS 849 * packet message is at least 4 bytes aligned. Fix up the 850 * alignment here, if the remote side sets the alignment 851 * too low. 852 */ 853 if_printf(sc->hn_ifp, "fixup RNDIS aggpkt align: %u -> %zu\n", 854 sc->hn_rndis_agg_align, sizeof(uint32_t)); 855 sc->hn_rndis_agg_align = sizeof(uint32_t); 856 } 857 858 if (bootverbose) { 859 if_printf(sc->hn_ifp, "RNDIS ver %u.%u, " 860 "aggpkt size %u, aggpkt cnt %u, aggpkt align %u\n", 861 comp->rm_ver_major, comp->rm_ver_minor, 862 sc->hn_rndis_agg_size, sc->hn_rndis_agg_pkts, 863 sc->hn_rndis_agg_align); 864 } 865 error = 0; 866done: 867 vmbus_xact_put(xact); 868 return (error); 869} 870 871static int 872hn_rndis_halt(struct hn_softc *sc) 873{ 874 struct vmbus_xact *xact; 875 struct rndis_halt_req *halt; 876 struct hn_nvs_sendctx sndc; 877 size_t comp_len; 878 879 xact = vmbus_xact_get(sc->hn_xact, sizeof(*halt)); 880 if (xact == NULL) { 881 if_printf(sc->hn_ifp, "no xact for RNDIS halt\n"); 882 return (ENXIO); 883 } 884 halt = vmbus_xact_req_data(xact); 885 halt->rm_type = REMOTE_NDIS_HALT_MSG; 886 halt->rm_len = sizeof(*halt); 887 halt->rm_rid = hn_rndis_rid(sc); 888 889 /* No RNDIS completion; rely on NVS message send completion */ 890 hn_nvs_sendctx_init(&sndc, hn_nvs_sent_xact, xact); 891 hn_rndis_xact_exec1(sc, xact, sizeof(*halt), &sndc, &comp_len); 892 893 vmbus_xact_put(xact); 894 if (bootverbose) 895 if_printf(sc->hn_ifp, "RNDIS halt done\n"); 896 return (0); 897} 898 899static int 900hn_rndis_query_hwcaps(struct hn_softc *sc, struct ndis_offload *caps) 901{ 902 struct ndis_offload in; 903 size_t caps_len, size; 904 int error; 905 906 memset(&in, 0, sizeof(in)); 907 in.ndis_hdr.ndis_type = NDIS_OBJTYPE_OFFLOAD; 908 if (sc->hn_ndis_ver >= HN_NDIS_VERSION_6_30) { 909 in.ndis_hdr.ndis_rev = NDIS_OFFLOAD_REV_3; 910 size = NDIS_OFFLOAD_SIZE; 911 } else if (sc->hn_ndis_ver >= HN_NDIS_VERSION_6_1) { 912 in.ndis_hdr.ndis_rev = NDIS_OFFLOAD_REV_2; 913 size = NDIS_OFFLOAD_SIZE_6_1; 914 } else { 915 in.ndis_hdr.ndis_rev = NDIS_OFFLOAD_REV_1; 916 size = NDIS_OFFLOAD_SIZE_6_0; 917 } 918 in.ndis_hdr.ndis_size = size; 919 920 caps_len = NDIS_OFFLOAD_SIZE; 921 error = hn_rndis_query2(sc, OID_TCP_OFFLOAD_HARDWARE_CAPABILITIES, 922 &in, size, caps, &caps_len, NDIS_OFFLOAD_SIZE_6_0); 923 if (error) 924 return (error); 925 926 /* 927 * Preliminary verification. 928 */ 929 if (caps->ndis_hdr.ndis_type != NDIS_OBJTYPE_OFFLOAD) { 930 if_printf(sc->hn_ifp, "invalid NDIS objtype 0x%02x\n", 931 caps->ndis_hdr.ndis_type); 932 return (EINVAL); 933 } 934 if (caps->ndis_hdr.ndis_rev < NDIS_OFFLOAD_REV_1) { 935 if_printf(sc->hn_ifp, "invalid NDIS objrev 0x%02x\n", 936 caps->ndis_hdr.ndis_rev); 937 return (EINVAL); 938 } 939 if (caps->ndis_hdr.ndis_size > caps_len) { 940 if_printf(sc->hn_ifp, "invalid NDIS objsize %u, " 941 "data size %zu\n", caps->ndis_hdr.ndis_size, caps_len); 942 return (EINVAL); 943 } else if (caps->ndis_hdr.ndis_size < NDIS_OFFLOAD_SIZE_6_0) { 944 if_printf(sc->hn_ifp, "invalid NDIS objsize %u\n", 945 caps->ndis_hdr.ndis_size); 946 return (EINVAL); 947 } 948 949 if (bootverbose) { 950 /* 951 * NOTE: 952 * caps->ndis_hdr.ndis_size MUST be checked before accessing 953 * NDIS 6.1+ specific fields. 954 */ 955 if_printf(sc->hn_ifp, "hwcaps rev %u\n", 956 caps->ndis_hdr.ndis_rev); 957 958 if_printf(sc->hn_ifp, "hwcaps csum: " 959 "ip4 tx 0x%x/0x%x rx 0x%x/0x%x, " 960 "ip6 tx 0x%x/0x%x rx 0x%x/0x%x\n", 961 caps->ndis_csum.ndis_ip4_txcsum, 962 caps->ndis_csum.ndis_ip4_txenc, 963 caps->ndis_csum.ndis_ip4_rxcsum, 964 caps->ndis_csum.ndis_ip4_rxenc, 965 caps->ndis_csum.ndis_ip6_txcsum, 966 caps->ndis_csum.ndis_ip6_txenc, 967 caps->ndis_csum.ndis_ip6_rxcsum, 968 caps->ndis_csum.ndis_ip6_rxenc); 969 if_printf(sc->hn_ifp, "hwcaps lsov2: " 970 "ip4 maxsz %u minsg %u encap 0x%x, " 971 "ip6 maxsz %u minsg %u encap 0x%x opts 0x%x\n", 972 caps->ndis_lsov2.ndis_ip4_maxsz, 973 caps->ndis_lsov2.ndis_ip4_minsg, 974 caps->ndis_lsov2.ndis_ip4_encap, 975 caps->ndis_lsov2.ndis_ip6_maxsz, 976 caps->ndis_lsov2.ndis_ip6_minsg, 977 caps->ndis_lsov2.ndis_ip6_encap, 978 caps->ndis_lsov2.ndis_ip6_opts); 979 } 980 return (0); 981} 982 983int 984hn_rndis_attach(struct hn_softc *sc, int mtu, int *init_done) 985{ 986 int error; 987 988 *init_done = 0; 989 990 /* 991 * Initialize RNDIS. 992 */ 993 error = hn_rndis_init(sc); 994 if (error) 995 return (error); 996 *init_done = 1; 997 998 /* 999 * Configure NDIS offload settings. 1000 */ 1001 hn_rndis_conf_offload(sc, mtu); 1002 return (0); 1003} 1004 1005void 1006hn_rndis_detach(struct hn_softc *sc) 1007{ 1008 1009 /* Halt the RNDIS. */ 1010 hn_rndis_halt(sc); 1011} 1012