if_hvn.c revision 1.12
1 /* $NetBSD: if_hvn.c,v 1.12 2019/12/10 11:19:25 nonaka Exp $ */ 2 /* $OpenBSD: if_hvn.c,v 1.39 2018/03/11 14:31:34 mikeb Exp $ */ 3 4 /*- 5 * Copyright (c) 2009-2012,2016 Microsoft Corp. 6 * Copyright (c) 2010-2012 Citrix Inc. 7 * Copyright (c) 2012 NetApp Inc. 8 * Copyright (c) 2016 Mike Belopuhov <mike (at) esdenera.com> 9 * All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice unmodified, this list of conditions, and the following 16 * disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* 34 * The OpenBSD port was done under funding by Esdenera Networks GmbH. 35 */ 36 37 #include <sys/cdefs.h> 38 __KERNEL_RCSID(0, "$NetBSD: if_hvn.c,v 1.12 2019/12/10 11:19:25 nonaka Exp $"); 39 40 #ifdef _KERNEL_OPT 41 #include "opt_inet.h" 42 #include "opt_inet6.h" 43 #include "opt_net_mpsafe.h" 44 #endif 45 46 #include <sys/param.h> 47 #include <sys/systm.h> 48 #include <sys/kernel.h> 49 #include <sys/device.h> 50 #include <sys/atomic.h> 51 #include <sys/bus.h> 52 #include <sys/intr.h> 53 #include <sys/kmem.h> 54 55 #include <net/if.h> 56 #include <net/if_ether.h> 57 #include <net/if_media.h> 58 59 #include <net/bpf.h> 60 61 #include <dev/ic/ndisreg.h> 62 #include <dev/ic/rndisreg.h> 63 64 #include <dev/hyperv/vmbusvar.h> 65 #include <dev/hyperv/if_hvnreg.h> 66 67 #ifndef EVL_PRIO_BITS 68 #define EVL_PRIO_BITS 13 69 #endif 70 71 #define HVN_NVS_MSGSIZE 32 72 #define HVN_NVS_BUFSIZE PAGE_SIZE 73 74 /* 75 * RNDIS control interface 76 */ 77 #define HVN_RNDIS_CTLREQS 4 78 #define HVN_RNDIS_BUFSIZE 512 79 80 struct rndis_cmd { 81 uint32_t rc_id; 82 struct hvn_nvs_rndis rc_msg; 83 void *rc_req; 84 bus_dmamap_t rc_dmap; 85 bus_dma_segment_t rc_segs; 86 int rc_nsegs; 87 uint64_t rc_gpa; 88 struct rndis_packet_msg rc_cmp; 89 uint32_t rc_cmplen; 90 uint8_t rc_cmpbuf[HVN_RNDIS_BUFSIZE]; 91 int rc_done; 92 TAILQ_ENTRY(rndis_cmd) rc_entry; 93 }; 94 TAILQ_HEAD(rndis_queue, rndis_cmd); 95 96 #define HVN_MAXMTU (9 * 1024) 97 98 #define HVN_RNDIS_XFER_SIZE 2048 99 100 /* 101 * Tx ring 102 */ 103 #define HVN_TX_DESC 256 104 #define HVN_TX_FRAGS 15 /* 31 is the max */ 105 #define HVN_TX_FRAG_SIZE PAGE_SIZE 106 #define HVN_TX_PKT_SIZE 16384 107 108 #define HVN_RNDIS_PKT_LEN \ 109 (sizeof(struct rndis_packet_msg) + \ 110 sizeof(struct rndis_pktinfo) + NDIS_VLAN_INFO_SIZE + \ 111 sizeof(struct rndis_pktinfo) + NDIS_TXCSUM_INFO_SIZE) 112 113 struct hvn_tx_desc { 114 uint32_t txd_id; 115 int txd_ready; 116 struct vmbus_gpa txd_sgl[HVN_TX_FRAGS + 1]; 117 int txd_nsge; 118 struct mbuf *txd_buf; 119 bus_dmamap_t txd_dmap; 120 struct vmbus_gpa txd_gpa; 121 struct rndis_packet_msg *txd_req; 122 }; 123 124 struct hvn_softc { 125 device_t sc_dev; 126 127 struct vmbus_softc *sc_vmbus; 128 struct vmbus_channel *sc_chan; 129 bus_dma_tag_t sc_dmat; 130 131 struct ethercom sc_ec; 132 struct ifmedia sc_media; 133 struct if_percpuq *sc_ipq; 134 int sc_link_state; 135 int sc_promisc; 136 137 uint32_t sc_flags; 138 #define HVN_SCF_ATTACHED __BIT(0) 139 140 /* NVS protocol */ 141 int sc_proto; 142 uint32_t sc_nvstid; 143 uint8_t sc_nvsrsp[HVN_NVS_MSGSIZE]; 144 uint8_t *sc_nvsbuf; 145 int sc_nvsdone; 146 147 /* RNDIS protocol */ 148 int sc_ndisver; 149 uint32_t sc_rndisrid; 150 struct rndis_queue sc_cntl_sq; /* submission queue */ 151 kmutex_t sc_cntl_sqlck; 152 struct rndis_queue sc_cntl_cq; /* completion queue */ 153 kmutex_t sc_cntl_cqlck; 154 struct rndis_queue sc_cntl_fq; /* free queue */ 155 kmutex_t sc_cntl_fqlck; 156 struct rndis_cmd sc_cntl_msgs[HVN_RNDIS_CTLREQS]; 157 struct hvn_nvs_rndis sc_data_msg; 158 159 /* Rx ring */ 160 uint8_t *sc_rx_ring; 161 int sc_rx_size; 162 uint32_t sc_rx_hndl; 163 struct hyperv_dma sc_rx_dma; 164 165 /* Tx ring */ 166 uint32_t sc_tx_next; 167 uint32_t sc_tx_avail; 168 struct hvn_tx_desc sc_tx_desc[HVN_TX_DESC]; 169 bus_dmamap_t sc_tx_rmap; 170 uint8_t *sc_tx_msgs; 171 bus_dma_segment_t sc_tx_mseg; 172 }; 173 174 #define SC2IFP(_sc_) (&(_sc_)->sc_ec.ec_if) 175 #define IFP2SC(_ifp_) ((_ifp_)->if_softc) 176 177 178 static int hvn_match(device_t, cfdata_t, void *); 179 static void hvn_attach(device_t, device_t, void *); 180 static int hvn_detach(device_t, int); 181 182 CFATTACH_DECL_NEW(hvn, sizeof(struct hvn_softc), 183 hvn_match, hvn_attach, hvn_detach, NULL); 184 185 static int hvn_ioctl(struct ifnet *, u_long, void *); 186 static int hvn_media_change(struct ifnet *); 187 static void hvn_media_status(struct ifnet *, struct ifmediareq *); 188 static int hvn_iff(struct hvn_softc *); 189 static int hvn_init(struct ifnet *); 190 static void hvn_stop(struct ifnet *, int); 191 static void hvn_start(struct ifnet *); 192 static int hvn_encap(struct hvn_softc *, struct mbuf *, 193 struct hvn_tx_desc **); 194 static void hvn_decap(struct hvn_softc *, struct hvn_tx_desc *); 195 static void hvn_txeof(struct hvn_softc *, uint64_t); 196 static int hvn_rx_ring_create(struct hvn_softc *); 197 static int hvn_rx_ring_destroy(struct hvn_softc *); 198 static int hvn_tx_ring_create(struct hvn_softc *); 199 static void hvn_tx_ring_destroy(struct hvn_softc *); 200 static int hvn_set_capabilities(struct hvn_softc *); 201 static int hvn_get_lladdr(struct hvn_softc *, uint8_t *); 202 static void hvn_get_link_status(struct hvn_softc *); 203 204 /* NSVP */ 205 static int hvn_nvs_attach(struct hvn_softc *); 206 static void hvn_nvs_intr(void *); 207 static int hvn_nvs_cmd(struct hvn_softc *, void *, size_t, uint64_t, int); 208 static int hvn_nvs_ack(struct hvn_softc *, uint64_t); 209 static void hvn_nvs_detach(struct hvn_softc *); 210 211 /* RNDIS */ 212 static int hvn_rndis_attach(struct hvn_softc *); 213 static int hvn_rndis_cmd(struct hvn_softc *, struct rndis_cmd *, int); 214 static void hvn_rndis_input(struct hvn_softc *, uint64_t, void *); 215 static void hvn_rxeof(struct hvn_softc *, uint8_t *, uint32_t); 216 static void hvn_rndis_complete(struct hvn_softc *, uint8_t *, uint32_t); 217 static int hvn_rndis_output(struct hvn_softc *, struct hvn_tx_desc *); 218 static void hvn_rndis_status(struct hvn_softc *, uint8_t *, uint32_t); 219 static int hvn_rndis_query(struct hvn_softc *, uint32_t, void *, size_t *); 220 static int hvn_rndis_set(struct hvn_softc *, uint32_t, void *, size_t); 221 static int hvn_rndis_open(struct hvn_softc *); 222 static int hvn_rndis_close(struct hvn_softc *); 223 static void hvn_rndis_detach(struct hvn_softc *); 224 225 static int 226 hvn_match(device_t parent, cfdata_t match, void *aux) 227 { 228 struct vmbus_attach_args *aa = aux; 229 230 if (memcmp(aa->aa_type, &hyperv_guid_network, sizeof(*aa->aa_type))) 231 return 0; 232 return 1; 233 } 234 235 static void 236 hvn_attach(device_t parent, device_t self, void *aux) 237 { 238 struct hvn_softc *sc = device_private(self); 239 struct vmbus_attach_args *aa = aux; 240 struct ifnet *ifp = SC2IFP(sc); 241 uint8_t enaddr[ETHER_ADDR_LEN]; 242 int error; 243 244 sc->sc_dev = self; 245 sc->sc_vmbus = (struct vmbus_softc *)device_private(parent); 246 sc->sc_chan = aa->aa_chan; 247 sc->sc_dmat = sc->sc_vmbus->sc_dmat; 248 249 aprint_naive("\n"); 250 aprint_normal(": Hyper-V NetVSC\n"); 251 252 strlcpy(ifp->if_xname, device_xname(sc->sc_dev), IFNAMSIZ); 253 254 if (hvn_nvs_attach(sc)) { 255 aprint_error_dev(self, "failed to init NVSP\n"); 256 return; 257 } 258 259 if (hvn_rx_ring_create(sc)) { 260 aprint_error_dev(self, "failed to create Rx ring\n"); 261 goto fail1; 262 } 263 264 if (hvn_tx_ring_create(sc)) { 265 aprint_error_dev(self, "failed to create Tx ring\n"); 266 goto fail1; 267 } 268 269 ifp->if_softc = sc; 270 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 271 ifp->if_ioctl = hvn_ioctl; 272 ifp->if_start = hvn_start; 273 ifp->if_init = hvn_init; 274 ifp->if_stop = hvn_stop; 275 ifp->if_capabilities = IFCAP_CSUM_IPv4_Tx | IFCAP_CSUM_IPv4_Rx; 276 ifp->if_capabilities |= IFCAP_CSUM_TCPv4_Tx | IFCAP_CSUM_TCPv4_Rx; 277 ifp->if_capabilities |= IFCAP_CSUM_TCPv6_Tx | IFCAP_CSUM_TCPv6_Rx; 278 if (sc->sc_ndisver > NDIS_VERSION_6_30) { 279 ifp->if_capabilities |= IFCAP_CSUM_UDPv4_Tx; 280 ifp->if_capabilities |= IFCAP_CSUM_UDPv4_Rx; 281 ifp->if_capabilities |= IFCAP_CSUM_UDPv6_Tx; 282 ifp->if_capabilities |= IFCAP_CSUM_UDPv6_Rx; 283 } 284 if (sc->sc_proto >= HVN_NVS_PROTO_VERSION_2) { 285 sc->sc_ec.ec_capabilities |= ETHERCAP_VLAN_HWTAGGING; 286 sc->sc_ec.ec_capabilities |= ETHERCAP_VLAN_MTU; 287 sc->sc_ec.ec_capenable |= ETHERCAP_VLAN_HWTAGGING; 288 } 289 290 IFQ_SET_MAXLEN(&ifp->if_snd, HVN_TX_DESC - 1); 291 IFQ_SET_READY(&ifp->if_snd); 292 293 /* Initialize ifmedia structures. */ 294 sc->sc_ec.ec_ifmedia = &sc->sc_media; 295 ifmedia_init(&sc->sc_media, IFM_IMASK, hvn_media_change, 296 hvn_media_status); 297 ifmedia_add(&sc->sc_media, IFM_ETHER | IFM_MANUAL, 0, NULL); 298 ifmedia_set(&sc->sc_media, IFM_ETHER | IFM_MANUAL); 299 300 error = if_initialize(ifp); 301 if (error) { 302 aprint_error_dev(self, "if_initialize failed(%d)\n", error); 303 goto fail2; 304 } 305 sc->sc_ipq = if_percpuq_create(ifp); 306 if_deferred_start_init(ifp, NULL); 307 308 if (hvn_rndis_attach(sc)) { 309 aprint_error_dev(self, "failed to init RNDIS\n"); 310 goto fail1; 311 } 312 313 aprint_normal_dev(self, "NVS %d.%d NDIS %d.%d\n", 314 sc->sc_proto >> 16, sc->sc_proto & 0xffff, 315 sc->sc_ndisver >> 16 , sc->sc_ndisver & 0xffff); 316 317 if (hvn_set_capabilities(sc)) { 318 aprint_error_dev(self, "failed to setup offloading\n"); 319 goto fail2; 320 } 321 322 if (hvn_get_lladdr(sc, enaddr)) { 323 aprint_error_dev(self, 324 "failed to obtain an ethernet address\n"); 325 goto fail2; 326 } 327 aprint_normal_dev(self, "Ethernet address %s\n", ether_sprintf(enaddr)); 328 329 ether_ifattach(ifp, enaddr); 330 if_register(ifp); 331 332 if (pmf_device_register(self, NULL, NULL)) 333 pmf_class_network_register(self, ifp); 334 else 335 aprint_error_dev(self, "couldn't establish power handler\n"); 336 337 SET(sc->sc_flags, HVN_SCF_ATTACHED); 338 return; 339 340 fail2: hvn_rndis_detach(sc); 341 fail1: hvn_rx_ring_destroy(sc); 342 hvn_tx_ring_destroy(sc); 343 hvn_nvs_detach(sc); 344 } 345 346 static int 347 hvn_detach(device_t self, int flags) 348 { 349 struct hvn_softc *sc = device_private(self); 350 struct ifnet *ifp = SC2IFP(sc); 351 352 if (!ISSET(sc->sc_flags, HVN_SCF_ATTACHED)) 353 return 0; 354 355 hvn_stop(ifp, 1); 356 357 pmf_device_deregister(self); 358 359 ether_ifdetach(ifp); 360 if_detach(ifp); 361 if_percpuq_destroy(sc->sc_ipq); 362 363 hvn_rndis_detach(sc); 364 hvn_rx_ring_destroy(sc); 365 hvn_tx_ring_destroy(sc); 366 hvn_nvs_detach(sc); 367 368 return 0; 369 } 370 371 static int 372 hvn_ioctl(struct ifnet *ifp, u_long command, void * data) 373 { 374 struct hvn_softc *sc = IFP2SC(ifp); 375 int s, error = 0; 376 377 s = splnet(); 378 379 switch (command) { 380 case SIOCSIFFLAGS: 381 if (ifp->if_flags & IFF_UP) { 382 if (ifp->if_flags & IFF_RUNNING) 383 error = ENETRESET; 384 else { 385 error = hvn_init(ifp); 386 if (error) 387 ifp->if_flags &= ~IFF_UP; 388 } 389 } else { 390 if (ifp->if_flags & IFF_RUNNING) 391 hvn_stop(ifp, 1); 392 } 393 break; 394 default: 395 error = ether_ioctl(ifp, command, data); 396 break; 397 } 398 399 if (error == ENETRESET) { 400 if (ifp->if_flags & IFF_RUNNING) 401 hvn_iff(sc); 402 error = 0; 403 } 404 405 splx(s); 406 407 return error; 408 } 409 410 static int 411 hvn_media_change(struct ifnet *ifp) 412 { 413 414 return 0; 415 } 416 417 static void 418 hvn_media_status(struct ifnet *ifp, struct ifmediareq *ifmr) 419 { 420 struct hvn_softc *sc = IFP2SC(ifp); 421 int link_state; 422 423 link_state = sc->sc_link_state; 424 hvn_get_link_status(sc); 425 if (link_state != sc->sc_link_state) 426 if_link_state_change(ifp, sc->sc_link_state); 427 428 ifmr->ifm_status = IFM_AVALID; 429 ifmr->ifm_active = IFM_ETHER | IFM_MANUAL; 430 if (sc->sc_link_state == LINK_STATE_UP) 431 ifmr->ifm_status |= IFM_ACTIVE; 432 } 433 434 static int 435 hvn_iff(struct hvn_softc *sc) 436 { 437 438 /* XXX */ 439 sc->sc_promisc = 0; 440 441 return 0; 442 } 443 444 static int 445 hvn_init(struct ifnet *ifp) 446 { 447 struct hvn_softc *sc = IFP2SC(ifp); 448 int error; 449 450 hvn_stop(ifp, 0); 451 452 error = hvn_iff(sc); 453 if (error) 454 return error; 455 456 error = hvn_rndis_open(sc); 457 if (error == 0) { 458 ifp->if_flags |= IFF_RUNNING; 459 ifp->if_flags &= ~IFF_OACTIVE; 460 } 461 return error; 462 } 463 464 static void 465 hvn_stop(struct ifnet *ifp, int disable) 466 { 467 struct hvn_softc *sc = IFP2SC(ifp); 468 469 hvn_rndis_close(sc); 470 471 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 472 } 473 474 static void 475 hvn_start(struct ifnet *ifp) 476 { 477 struct hvn_softc *sc = IFP2SC(ifp); 478 struct hvn_tx_desc *txd; 479 struct mbuf *m; 480 481 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 482 return; 483 484 for (;;) { 485 if (!sc->sc_tx_avail) { 486 /* transient */ 487 ifp->if_flags |= IFF_OACTIVE; 488 break; 489 } 490 491 IFQ_DEQUEUE(&ifp->if_snd, m); 492 if (m == NULL) 493 break; 494 495 if (hvn_encap(sc, m, &txd)) { 496 /* the chain is too large */ 497 ifp->if_oerrors++; 498 m_freem(m); 499 continue; 500 } 501 502 bpf_mtap(ifp, m, BPF_D_OUT); 503 504 if (hvn_rndis_output(sc, txd)) { 505 hvn_decap(sc, txd); 506 ifp->if_oerrors++; 507 m_freem(m); 508 continue; 509 } 510 511 sc->sc_tx_next++; 512 } 513 } 514 515 static inline char * 516 hvn_rndis_pktinfo_append(struct rndis_packet_msg *pkt, size_t pktsize, 517 size_t datalen, uint32_t type) 518 { 519 struct rndis_pktinfo *pi; 520 size_t pi_size = sizeof(*pi) + datalen; 521 char *cp; 522 523 KASSERT(pkt->rm_pktinfooffset + pkt->rm_pktinfolen + pi_size <= 524 pktsize); 525 526 cp = (char *)pkt + pkt->rm_pktinfooffset + pkt->rm_pktinfolen; 527 pi = (struct rndis_pktinfo *)cp; 528 pi->rm_size = pi_size; 529 pi->rm_type = type; 530 pi->rm_pktinfooffset = sizeof(*pi); 531 pkt->rm_pktinfolen += pi_size; 532 pkt->rm_dataoffset += pi_size; 533 pkt->rm_len += pi_size; 534 535 return (char *)pi->rm_data; 536 } 537 538 static int 539 hvn_encap(struct hvn_softc *sc, struct mbuf *m, struct hvn_tx_desc **txd0) 540 { 541 struct hvn_tx_desc *txd; 542 struct rndis_packet_msg *pkt; 543 bus_dma_segment_t *seg; 544 size_t pktlen; 545 int i, rv; 546 547 do { 548 txd = &sc->sc_tx_desc[sc->sc_tx_next % HVN_TX_DESC]; 549 sc->sc_tx_next++; 550 } while (!txd->txd_ready); 551 txd->txd_ready = 0; 552 553 pkt = txd->txd_req; 554 memset(pkt, 0, HVN_RNDIS_PKT_LEN); 555 pkt->rm_type = REMOTE_NDIS_PACKET_MSG; 556 pkt->rm_len = sizeof(*pkt) + m->m_pkthdr.len; 557 pkt->rm_dataoffset = RNDIS_DATA_OFFSET; 558 pkt->rm_datalen = m->m_pkthdr.len; 559 pkt->rm_pktinfooffset = sizeof(*pkt); /* adjusted below */ 560 pkt->rm_pktinfolen = 0; 561 562 rv = bus_dmamap_load_mbuf(sc->sc_dmat, txd->txd_dmap, m, BUS_DMA_READ | 563 BUS_DMA_NOWAIT); 564 switch (rv) { 565 case 0: 566 break; 567 case EFBIG: 568 if (m_defrag(m, M_NOWAIT) != NULL && 569 bus_dmamap_load_mbuf(sc->sc_dmat, txd->txd_dmap, m, 570 BUS_DMA_READ | BUS_DMA_NOWAIT) == 0) 571 break; 572 /* FALLTHROUGH */ 573 default: 574 DPRINTF("%s: failed to load mbuf\n", device_xname(sc->sc_dev)); 575 return -1; 576 } 577 txd->txd_buf = m; 578 579 if (m->m_flags & M_VLANTAG) { 580 uint32_t vlan; 581 char *cp; 582 583 vlan = NDIS_VLAN_INFO_MAKE( 584 EVL_VLANOFTAG(m->m_pkthdr.ether_vtag), 585 EVL_PRIOFTAG(m->m_pkthdr.ether_vtag), 0); 586 cp = hvn_rndis_pktinfo_append(pkt, HVN_RNDIS_PKT_LEN, 587 NDIS_VLAN_INFO_SIZE, NDIS_PKTINFO_TYPE_VLAN); 588 memcpy(cp, &vlan, NDIS_VLAN_INFO_SIZE); 589 } 590 591 if (m->m_pkthdr.csum_flags & (M_CSUM_IPv4 | M_CSUM_UDPv4 | 592 M_CSUM_TCPv4)) { 593 uint32_t csum = NDIS_TXCSUM_INFO_IPV4; 594 char *cp; 595 596 if (m->m_pkthdr.csum_flags & M_CSUM_IPv4) 597 csum |= NDIS_TXCSUM_INFO_IPCS; 598 if (m->m_pkthdr.csum_flags & M_CSUM_TCPv4) 599 csum |= NDIS_TXCSUM_INFO_TCPCS; 600 if (m->m_pkthdr.csum_flags & M_CSUM_UDPv4) 601 csum |= NDIS_TXCSUM_INFO_UDPCS; 602 cp = hvn_rndis_pktinfo_append(pkt, HVN_RNDIS_PKT_LEN, 603 NDIS_TXCSUM_INFO_SIZE, NDIS_PKTINFO_TYPE_CSUM); 604 memcpy(cp, &csum, NDIS_TXCSUM_INFO_SIZE); 605 } 606 607 pktlen = pkt->rm_pktinfooffset + pkt->rm_pktinfolen; 608 pkt->rm_pktinfooffset -= RNDIS_HEADER_OFFSET; 609 610 /* Attach an RNDIS message to the first slot */ 611 txd->txd_sgl[0].gpa_page = txd->txd_gpa.gpa_page; 612 txd->txd_sgl[0].gpa_ofs = txd->txd_gpa.gpa_ofs; 613 txd->txd_sgl[0].gpa_len = pktlen; 614 txd->txd_nsge = txd->txd_dmap->dm_nsegs + 1; 615 616 for (i = 0; i < txd->txd_dmap->dm_nsegs; i++) { 617 seg = &txd->txd_dmap->dm_segs[i]; 618 txd->txd_sgl[1 + i].gpa_page = atop(seg->ds_addr); 619 txd->txd_sgl[1 + i].gpa_ofs = seg->ds_addr & PAGE_MASK; 620 txd->txd_sgl[1 + i].gpa_len = seg->ds_len; 621 } 622 623 *txd0 = txd; 624 625 atomic_dec_uint(&sc->sc_tx_avail); 626 627 return 0; 628 } 629 630 static void 631 hvn_decap(struct hvn_softc *sc, struct hvn_tx_desc *txd) 632 { 633 struct ifnet *ifp = SC2IFP(sc); 634 635 bus_dmamap_sync(sc->sc_dmat, txd->txd_dmap, 636 0, txd->txd_dmap->dm_mapsize, 637 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 638 bus_dmamap_unload(sc->sc_dmat, txd->txd_dmap); 639 txd->txd_buf = NULL; 640 txd->txd_nsge = 0; 641 txd->txd_ready = 1; 642 atomic_inc_uint(&sc->sc_tx_avail); 643 ifp->if_flags &= ~IFF_OACTIVE; 644 } 645 646 static void 647 hvn_txeof(struct hvn_softc *sc, uint64_t tid) 648 { 649 struct ifnet *ifp = SC2IFP(sc); 650 struct hvn_tx_desc *txd; 651 struct mbuf *m; 652 uint32_t id = tid >> 32; 653 654 if ((tid & 0xffffffffU) != 0) 655 return; 656 657 id -= HVN_NVS_CHIM_SIG; 658 if (id >= HVN_TX_DESC) { 659 device_printf(sc->sc_dev, "tx packet index too large: %u", id); 660 return; 661 } 662 663 txd = &sc->sc_tx_desc[id]; 664 665 if ((m = txd->txd_buf) == NULL) { 666 device_printf(sc->sc_dev, "no mbuf @%u\n", id); 667 return; 668 } 669 txd->txd_buf = NULL; 670 671 bus_dmamap_sync(sc->sc_dmat, txd->txd_dmap, 672 0, txd->txd_dmap->dm_mapsize, 673 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 674 bus_dmamap_unload(sc->sc_dmat, txd->txd_dmap); 675 m_freem(m); 676 ifp->if_opackets++; 677 678 txd->txd_ready = 1; 679 680 atomic_inc_uint(&sc->sc_tx_avail); 681 ifp->if_flags &= ~IFF_OACTIVE; 682 } 683 684 static int 685 hvn_rx_ring_create(struct hvn_softc *sc) 686 { 687 struct hvn_nvs_rxbuf_conn cmd; 688 struct hvn_nvs_rxbuf_conn_resp *rsp; 689 uint64_t tid; 690 691 if (sc->sc_proto <= HVN_NVS_PROTO_VERSION_2) 692 sc->sc_rx_size = 15 * 1024 * 1024; /* 15MB */ 693 else 694 sc->sc_rx_size = 16 * 1024 * 1024; /* 16MB */ 695 sc->sc_rx_ring = hyperv_dma_alloc(sc->sc_dmat, &sc->sc_rx_dma, 696 sc->sc_rx_size, PAGE_SIZE, PAGE_SIZE, sc->sc_rx_size / PAGE_SIZE); 697 if (sc->sc_rx_ring == NULL) { 698 DPRINTF("%s: failed to allocate Rx ring buffer\n", 699 device_xname(sc->sc_dev)); 700 return -1; 701 } 702 if (vmbus_handle_alloc(sc->sc_chan, &sc->sc_rx_dma, sc->sc_rx_size, 703 &sc->sc_rx_hndl)) { 704 DPRINTF("%s: failed to obtain a PA handle\n", 705 device_xname(sc->sc_dev)); 706 goto errout; 707 } 708 709 memset(&cmd, 0, sizeof(cmd)); 710 cmd.nvs_type = HVN_NVS_TYPE_RXBUF_CONN; 711 cmd.nvs_gpadl = sc->sc_rx_hndl; 712 cmd.nvs_sig = HVN_NVS_RXBUF_SIG; 713 714 tid = atomic_inc_uint_nv(&sc->sc_nvstid); 715 if (hvn_nvs_cmd(sc, &cmd, sizeof(cmd), tid, 100)) 716 goto errout; 717 718 rsp = (struct hvn_nvs_rxbuf_conn_resp *)&sc->sc_nvsrsp; 719 if (rsp->nvs_status != HVN_NVS_STATUS_OK) { 720 DPRINTF("%s: failed to set up the Rx ring\n", 721 device_xname(sc->sc_dev)); 722 goto errout; 723 } 724 if (rsp->nvs_nsect > 1) { 725 DPRINTF("%s: invalid number of Rx ring sections: %u\n", 726 device_xname(sc->sc_dev), rsp->nvs_nsect); 727 hvn_rx_ring_destroy(sc); 728 return -1; 729 } 730 return 0; 731 732 errout: 733 if (sc->sc_rx_hndl) { 734 vmbus_handle_free(sc->sc_chan, sc->sc_rx_hndl); 735 sc->sc_rx_hndl = 0; 736 } 737 if (sc->sc_rx_ring) { 738 kmem_free(sc->sc_rx_ring, sc->sc_rx_size); 739 sc->sc_rx_ring = NULL; 740 } 741 return -1; 742 } 743 744 static int 745 hvn_rx_ring_destroy(struct hvn_softc *sc) 746 { 747 struct hvn_nvs_rxbuf_disconn cmd; 748 uint64_t tid; 749 750 if (sc->sc_rx_ring == NULL) 751 return 0; 752 753 memset(&cmd, 0, sizeof(cmd)); 754 cmd.nvs_type = HVN_NVS_TYPE_RXBUF_DISCONN; 755 cmd.nvs_sig = HVN_NVS_RXBUF_SIG; 756 757 tid = atomic_inc_uint_nv(&sc->sc_nvstid); 758 if (hvn_nvs_cmd(sc, &cmd, sizeof(cmd), tid, 0)) 759 return -1; 760 761 delay(100); 762 763 vmbus_handle_free(sc->sc_chan, sc->sc_rx_hndl); 764 765 sc->sc_rx_hndl = 0; 766 767 kmem_free(sc->sc_rx_ring, sc->sc_rx_size); 768 sc->sc_rx_ring = NULL; 769 770 return 0; 771 } 772 773 static int 774 hvn_tx_ring_create(struct hvn_softc *sc) 775 { 776 const int dmaflags = cold ? BUS_DMA_NOWAIT : BUS_DMA_WAITOK; 777 struct hvn_tx_desc *txd; 778 bus_dma_segment_t *seg; 779 size_t msgsize; 780 int i, rsegs; 781 paddr_t pa; 782 783 msgsize = roundup(HVN_RNDIS_PKT_LEN, 128); 784 785 /* Allocate memory to store RNDIS messages */ 786 if (bus_dmamem_alloc(sc->sc_dmat, msgsize * HVN_TX_DESC, PAGE_SIZE, 0, 787 &sc->sc_tx_mseg, 1, &rsegs, dmaflags)) { 788 DPRINTF("%s: failed to allocate memory for RDNIS messages\n", 789 device_xname(sc->sc_dev)); 790 goto errout; 791 } 792 if (bus_dmamem_map(sc->sc_dmat, &sc->sc_tx_mseg, 1, msgsize * 793 HVN_TX_DESC, (void **)&sc->sc_tx_msgs, dmaflags)) { 794 DPRINTF("%s: failed to establish mapping for RDNIS messages\n", 795 device_xname(sc->sc_dev)); 796 goto errout; 797 } 798 memset(sc->sc_tx_msgs, 0, msgsize * HVN_TX_DESC); 799 if (bus_dmamap_create(sc->sc_dmat, msgsize * HVN_TX_DESC, 1, 800 msgsize * HVN_TX_DESC, 0, dmaflags, &sc->sc_tx_rmap)) { 801 DPRINTF("%s: failed to create map for RDNIS messages\n", 802 device_xname(sc->sc_dev)); 803 goto errout; 804 } 805 if (bus_dmamap_load(sc->sc_dmat, sc->sc_tx_rmap, sc->sc_tx_msgs, 806 msgsize * HVN_TX_DESC, NULL, dmaflags)) { 807 DPRINTF("%s: failed to create map for RDNIS messages\n", 808 device_xname(sc->sc_dev)); 809 goto errout; 810 } 811 812 for (i = 0; i < HVN_TX_DESC; i++) { 813 txd = &sc->sc_tx_desc[i]; 814 if (bus_dmamap_create(sc->sc_dmat, HVN_TX_PKT_SIZE, 815 HVN_TX_FRAGS, HVN_TX_FRAG_SIZE, PAGE_SIZE, dmaflags, 816 &txd->txd_dmap)) { 817 DPRINTF("%s: failed to create map for TX descriptors\n", 818 device_xname(sc->sc_dev)); 819 goto errout; 820 } 821 seg = &sc->sc_tx_rmap->dm_segs[0]; 822 pa = seg->ds_addr + (msgsize * i); 823 txd->txd_gpa.gpa_page = atop(pa); 824 txd->txd_gpa.gpa_ofs = pa & PAGE_MASK; 825 txd->txd_gpa.gpa_len = msgsize; 826 txd->txd_req = (void *)(sc->sc_tx_msgs + (msgsize * i)); 827 txd->txd_id = i + HVN_NVS_CHIM_SIG; 828 txd->txd_ready = 1; 829 } 830 sc->sc_tx_avail = HVN_TX_DESC; 831 832 return 0; 833 834 errout: 835 hvn_tx_ring_destroy(sc); 836 return -1; 837 } 838 839 static void 840 hvn_tx_ring_destroy(struct hvn_softc *sc) 841 { 842 struct hvn_tx_desc *txd; 843 int i; 844 845 for (i = 0; i < HVN_TX_DESC; i++) { 846 txd = &sc->sc_tx_desc[i]; 847 if (txd->txd_dmap == NULL) 848 continue; 849 bus_dmamap_sync(sc->sc_dmat, txd->txd_dmap, 850 0, txd->txd_dmap->dm_mapsize, 851 BUS_DMASYNC_POSTWRITE); 852 bus_dmamap_unload(sc->sc_dmat, txd->txd_dmap); 853 bus_dmamap_destroy(sc->sc_dmat, txd->txd_dmap); 854 txd->txd_dmap = NULL; 855 if (txd->txd_buf == NULL) 856 continue; 857 m_free(txd->txd_buf); 858 txd->txd_buf = NULL; 859 } 860 if (sc->sc_tx_rmap) { 861 bus_dmamap_sync(sc->sc_dmat, sc->sc_tx_rmap, 862 0, txd->txd_dmap->dm_mapsize, 863 BUS_DMASYNC_POSTWRITE); 864 bus_dmamap_unload(sc->sc_dmat, sc->sc_tx_rmap); 865 bus_dmamap_destroy(sc->sc_dmat, sc->sc_tx_rmap); 866 } 867 if (sc->sc_tx_msgs) { 868 size_t msgsize = roundup(HVN_RNDIS_PKT_LEN, 128); 869 870 bus_dmamem_unmap(sc->sc_dmat, sc->sc_tx_msgs, 871 msgsize * HVN_TX_DESC); 872 bus_dmamem_free(sc->sc_dmat, &sc->sc_tx_mseg, 1); 873 } 874 sc->sc_tx_rmap = NULL; 875 sc->sc_tx_msgs = NULL; 876 } 877 878 static int 879 hvn_get_lladdr(struct hvn_softc *sc, uint8_t *enaddr) 880 { 881 size_t addrlen = ETHER_ADDR_LEN; 882 int rv; 883 884 rv = hvn_rndis_query(sc, OID_802_3_PERMANENT_ADDRESS, enaddr, &addrlen); 885 if (rv == 0 && addrlen != ETHER_ADDR_LEN) 886 rv = -1; 887 return rv; 888 } 889 890 static void 891 hvn_get_link_status(struct hvn_softc *sc) 892 { 893 uint32_t state; 894 size_t len = sizeof(state); 895 896 if (hvn_rndis_query(sc, OID_GEN_MEDIA_CONNECT_STATUS, 897 &state, &len) == 0) 898 sc->sc_link_state = (state == NDIS_MEDIA_STATE_CONNECTED) ? 899 LINK_STATE_UP : LINK_STATE_DOWN; 900 } 901 902 static int 903 hvn_nvs_attach(struct hvn_softc *sc) 904 { 905 static const uint32_t protos[] = { 906 HVN_NVS_PROTO_VERSION_5, 907 HVN_NVS_PROTO_VERSION_4, 908 HVN_NVS_PROTO_VERSION_2, 909 HVN_NVS_PROTO_VERSION_1 910 }; 911 struct hvn_nvs_init cmd; 912 struct hvn_nvs_init_resp *rsp; 913 struct hvn_nvs_ndis_init ncmd; 914 struct hvn_nvs_ndis_conf ccmd; 915 uint32_t ndisver, ringsize; 916 uint64_t tid; 917 int i; 918 919 sc->sc_nvsbuf = kmem_zalloc(HVN_NVS_BUFSIZE, KM_SLEEP); 920 921 /* We need to be able to fit all RNDIS control and data messages */ 922 ringsize = HVN_RNDIS_CTLREQS * 923 (sizeof(struct hvn_nvs_rndis) + sizeof(struct vmbus_gpa)) + 924 HVN_TX_DESC * (sizeof(struct hvn_nvs_rndis) + 925 (HVN_TX_FRAGS + 1) * sizeof(struct vmbus_gpa)); 926 927 sc->sc_chan->ch_flags &= ~CHF_BATCHED; 928 929 /* Associate our interrupt handler with the channel */ 930 if (vmbus_channel_open(sc->sc_chan, ringsize, NULL, 0, 931 hvn_nvs_intr, sc)) { 932 DPRINTF("%s: failed to open channel\n", 933 device_xname(sc->sc_dev)); 934 kmem_free(sc->sc_nvsbuf, HVN_NVS_BUFSIZE); 935 return -1; 936 } 937 938 memset(&cmd, 0, sizeof(cmd)); 939 cmd.nvs_type = HVN_NVS_TYPE_INIT; 940 for (i = 0; i < __arraycount(protos); i++) { 941 cmd.nvs_ver_min = cmd.nvs_ver_max = protos[i]; 942 tid = atomic_inc_uint_nv(&sc->sc_nvstid); 943 if (hvn_nvs_cmd(sc, &cmd, sizeof(cmd), tid, 100)) 944 return -1; 945 946 rsp = (struct hvn_nvs_init_resp *)&sc->sc_nvsrsp; 947 if (rsp->nvs_status == HVN_NVS_STATUS_OK) { 948 sc->sc_proto = protos[i]; 949 break; 950 } 951 } 952 if (i == __arraycount(protos)) { 953 DPRINTF("%s: failed to negotiate NVSP version\n", 954 device_xname(sc->sc_dev)); 955 return -1; 956 } 957 958 if (sc->sc_proto >= HVN_NVS_PROTO_VERSION_2) { 959 memset(&ccmd, 0, sizeof(ccmd)); 960 ccmd.nvs_type = HVN_NVS_TYPE_NDIS_CONF; 961 ccmd.nvs_mtu = HVN_MAXMTU; 962 ccmd.nvs_caps = HVN_NVS_NDIS_CONF_VLAN; 963 964 tid = atomic_inc_uint_nv(&sc->sc_nvstid); 965 if (hvn_nvs_cmd(sc, &ccmd, sizeof(ccmd), tid, 100)) 966 return -1; 967 } 968 969 memset(&ncmd, 0, sizeof(ncmd)); 970 ncmd.nvs_type = HVN_NVS_TYPE_NDIS_INIT; 971 if (sc->sc_proto <= HVN_NVS_PROTO_VERSION_4) 972 ndisver = NDIS_VERSION_6_1; 973 else 974 ndisver = NDIS_VERSION_6_30; 975 ncmd.nvs_ndis_major = (ndisver & 0xffff0000) >> 16; 976 ncmd.nvs_ndis_minor = ndisver & 0x0000ffff; 977 978 tid = atomic_inc_uint_nv(&sc->sc_nvstid); 979 if (hvn_nvs_cmd(sc, &ncmd, sizeof(ncmd), tid, 100)) 980 return -1; 981 982 sc->sc_ndisver = ndisver; 983 984 return 0; 985 } 986 987 static void 988 hvn_nvs_intr(void *arg) 989 { 990 struct hvn_softc *sc = arg; 991 struct ifnet *ifp = SC2IFP(sc); 992 struct vmbus_chanpkt_hdr *cph; 993 const struct hvn_nvs_hdr *nvs; 994 uint64_t rid; 995 uint32_t rlen; 996 int rv; 997 bool dotx = false; 998 999 for (;;) { 1000 rv = vmbus_channel_recv(sc->sc_chan, sc->sc_nvsbuf, 1001 HVN_NVS_BUFSIZE, &rlen, &rid, 1); 1002 if (rv != 0 || rlen == 0) { 1003 if (rv != EAGAIN) 1004 device_printf(sc->sc_dev, 1005 "failed to receive an NVSP packet\n"); 1006 break; 1007 } 1008 cph = (struct vmbus_chanpkt_hdr *)sc->sc_nvsbuf; 1009 nvs = (const struct hvn_nvs_hdr *)VMBUS_CHANPKT_CONST_DATA(cph); 1010 1011 if (cph->cph_type == VMBUS_CHANPKT_TYPE_COMP) { 1012 switch (nvs->nvs_type) { 1013 case HVN_NVS_TYPE_INIT_RESP: 1014 case HVN_NVS_TYPE_RXBUF_CONNRESP: 1015 case HVN_NVS_TYPE_CHIM_CONNRESP: 1016 case HVN_NVS_TYPE_SUBCH_RESP: 1017 /* copy the response back */ 1018 memcpy(&sc->sc_nvsrsp, nvs, HVN_NVS_MSGSIZE); 1019 sc->sc_nvsdone = 1; 1020 wakeup(&sc->sc_nvsrsp); 1021 break; 1022 case HVN_NVS_TYPE_RNDIS_ACK: 1023 dotx = true; 1024 hvn_txeof(sc, cph->cph_tid); 1025 break; 1026 default: 1027 device_printf(sc->sc_dev, 1028 "unhandled NVSP packet type %u " 1029 "on completion\n", nvs->nvs_type); 1030 break; 1031 } 1032 } else if (cph->cph_type == VMBUS_CHANPKT_TYPE_RXBUF) { 1033 switch (nvs->nvs_type) { 1034 case HVN_NVS_TYPE_RNDIS: 1035 hvn_rndis_input(sc, cph->cph_tid, cph); 1036 break; 1037 default: 1038 device_printf(sc->sc_dev, 1039 "unhandled NVSP packet type %u " 1040 "on receive\n", nvs->nvs_type); 1041 break; 1042 } 1043 } else if (cph->cph_type == VMBUS_CHANPKT_TYPE_INBAND) { 1044 switch (nvs->nvs_type) { 1045 case HVN_NVS_TYPE_TXTBL_NOTE: 1046 /* Useless; ignore */ 1047 break; 1048 default: 1049 device_printf(sc->sc_dev, 1050 "got notify, nvs type %u\n", nvs->nvs_type); 1051 break; 1052 } 1053 } else 1054 device_printf(sc->sc_dev, 1055 "unknown NVSP packet type %u\n", cph->cph_type); 1056 } 1057 1058 if (dotx) 1059 if_schedule_deferred_start(ifp); 1060 } 1061 1062 static int 1063 hvn_nvs_cmd(struct hvn_softc *sc, void *cmd, size_t cmdsize, uint64_t tid, 1064 int timo) 1065 { 1066 struct hvn_nvs_hdr *hdr = cmd; 1067 int tries = 10; 1068 int rv, s; 1069 1070 sc->sc_nvsdone = 0; 1071 1072 do { 1073 rv = vmbus_channel_send(sc->sc_chan, cmd, cmdsize, 1074 tid, VMBUS_CHANPKT_TYPE_INBAND, 1075 timo ? VMBUS_CHANPKT_FLAG_RC : 0); 1076 if (rv == EAGAIN) { 1077 if (cold) 1078 delay(1000); 1079 else 1080 tsleep(cmd, PRIBIO, "nvsout", mstohz(1)); 1081 } else if (rv) { 1082 DPRINTF("%s: NVSP operation %u send error %d\n", 1083 device_xname(sc->sc_dev), hdr->nvs_type, rv); 1084 return rv; 1085 } 1086 } while (rv != 0 && --tries > 0); 1087 1088 if (tries == 0 && rv != 0) { 1089 device_printf(sc->sc_dev, 1090 "NVSP operation %u send error %d\n", hdr->nvs_type, rv); 1091 return rv; 1092 } 1093 1094 if (timo == 0) 1095 return 0; 1096 1097 do { 1098 if (cold) { 1099 delay(1000); 1100 s = splnet(); 1101 hvn_nvs_intr(sc); 1102 splx(s); 1103 } else 1104 tsleep(sc->sc_nvsrsp, PRIBIO | PCATCH, "nvscmd", 1105 mstohz(1)); 1106 } while (--timo > 0 && sc->sc_nvsdone != 1); 1107 1108 if (timo == 0 && sc->sc_nvsdone != 1) { 1109 device_printf(sc->sc_dev, "NVSP operation %u timed out\n", 1110 hdr->nvs_type); 1111 return ETIMEDOUT; 1112 } 1113 return 0; 1114 } 1115 1116 static int 1117 hvn_nvs_ack(struct hvn_softc *sc, uint64_t tid) 1118 { 1119 struct hvn_nvs_rndis_ack cmd; 1120 int tries = 5; 1121 int rv; 1122 1123 cmd.nvs_type = HVN_NVS_TYPE_RNDIS_ACK; 1124 cmd.nvs_status = HVN_NVS_STATUS_OK; 1125 do { 1126 rv = vmbus_channel_send(sc->sc_chan, &cmd, sizeof(cmd), 1127 tid, VMBUS_CHANPKT_TYPE_COMP, 0); 1128 if (rv == EAGAIN) 1129 delay(10); 1130 else if (rv) { 1131 DPRINTF("%s: NVSP acknowledgement error %d\n", 1132 device_xname(sc->sc_dev), rv); 1133 return rv; 1134 } 1135 } while (rv != 0 && --tries > 0); 1136 return rv; 1137 } 1138 1139 static void 1140 hvn_nvs_detach(struct hvn_softc *sc) 1141 { 1142 1143 if (vmbus_channel_close(sc->sc_chan) == 0) { 1144 kmem_free(sc->sc_nvsbuf, HVN_NVS_BUFSIZE); 1145 sc->sc_nvsbuf = NULL; 1146 } 1147 } 1148 1149 static inline struct rndis_cmd * 1150 hvn_alloc_cmd(struct hvn_softc *sc) 1151 { 1152 struct rndis_cmd *rc; 1153 1154 mutex_enter(&sc->sc_cntl_fqlck); 1155 while ((rc = TAILQ_FIRST(&sc->sc_cntl_fq)) == NULL) 1156 /* XXX use condvar(9) instead of mtsleep */ 1157 mtsleep(&sc->sc_cntl_fq, PRIBIO, "nvsalloc", 1, 1158 &sc->sc_cntl_fqlck); 1159 TAILQ_REMOVE(&sc->sc_cntl_fq, rc, rc_entry); 1160 mutex_exit(&sc->sc_cntl_fqlck); 1161 return rc; 1162 } 1163 1164 static inline void 1165 hvn_submit_cmd(struct hvn_softc *sc, struct rndis_cmd *rc) 1166 { 1167 1168 mutex_enter(&sc->sc_cntl_sqlck); 1169 TAILQ_INSERT_TAIL(&sc->sc_cntl_sq, rc, rc_entry); 1170 mutex_exit(&sc->sc_cntl_sqlck); 1171 } 1172 1173 static inline struct rndis_cmd * 1174 hvn_complete_cmd(struct hvn_softc *sc, uint32_t id) 1175 { 1176 struct rndis_cmd *rc; 1177 1178 mutex_enter(&sc->sc_cntl_sqlck); 1179 TAILQ_FOREACH(rc, &sc->sc_cntl_sq, rc_entry) { 1180 if (rc->rc_id == id) { 1181 TAILQ_REMOVE(&sc->sc_cntl_sq, rc, rc_entry); 1182 break; 1183 } 1184 } 1185 mutex_exit(&sc->sc_cntl_sqlck); 1186 if (rc != NULL) { 1187 mutex_enter(&sc->sc_cntl_cqlck); 1188 TAILQ_INSERT_TAIL(&sc->sc_cntl_cq, rc, rc_entry); 1189 mutex_exit(&sc->sc_cntl_cqlck); 1190 } 1191 return rc; 1192 } 1193 1194 static inline void 1195 hvn_release_cmd(struct hvn_softc *sc, struct rndis_cmd *rc) 1196 { 1197 1198 mutex_enter(&sc->sc_cntl_cqlck); 1199 TAILQ_REMOVE(&sc->sc_cntl_cq, rc, rc_entry); 1200 mutex_exit(&sc->sc_cntl_cqlck); 1201 } 1202 1203 static inline int 1204 hvn_rollback_cmd(struct hvn_softc *sc, struct rndis_cmd *rc) 1205 { 1206 struct rndis_cmd *rn; 1207 1208 mutex_enter(&sc->sc_cntl_sqlck); 1209 TAILQ_FOREACH(rn, &sc->sc_cntl_sq, rc_entry) { 1210 if (rn == rc) { 1211 TAILQ_REMOVE(&sc->sc_cntl_sq, rc, rc_entry); 1212 mutex_exit(&sc->sc_cntl_sqlck); 1213 return 0; 1214 } 1215 } 1216 mutex_exit(&sc->sc_cntl_sqlck); 1217 return -1; 1218 } 1219 1220 static inline void 1221 hvn_free_cmd(struct hvn_softc *sc, struct rndis_cmd *rc) 1222 { 1223 1224 memset(rc->rc_req, 0, sizeof(struct rndis_packet_msg)); 1225 memset(&rc->rc_cmp, 0, sizeof(rc->rc_cmp)); 1226 memset(&rc->rc_msg, 0, sizeof(rc->rc_msg)); 1227 mutex_enter(&sc->sc_cntl_fqlck); 1228 TAILQ_INSERT_TAIL(&sc->sc_cntl_fq, rc, rc_entry); 1229 mutex_exit(&sc->sc_cntl_fqlck); 1230 wakeup(&sc->sc_cntl_fq); 1231 } 1232 1233 static int 1234 hvn_rndis_attach(struct hvn_softc *sc) 1235 { 1236 const int dmaflags = cold ? BUS_DMA_NOWAIT : BUS_DMA_WAITOK; 1237 struct rndis_init_req *req; 1238 struct rndis_init_comp *cmp; 1239 struct rndis_cmd *rc; 1240 int i, rv; 1241 1242 /* RNDIS control message queues */ 1243 TAILQ_INIT(&sc->sc_cntl_sq); 1244 TAILQ_INIT(&sc->sc_cntl_cq); 1245 TAILQ_INIT(&sc->sc_cntl_fq); 1246 mutex_init(&sc->sc_cntl_sqlck, MUTEX_DEFAULT, IPL_NET); 1247 mutex_init(&sc->sc_cntl_cqlck, MUTEX_DEFAULT, IPL_NET); 1248 mutex_init(&sc->sc_cntl_fqlck, MUTEX_DEFAULT, IPL_NET); 1249 1250 for (i = 0; i < HVN_RNDIS_CTLREQS; i++) { 1251 rc = &sc->sc_cntl_msgs[i]; 1252 if (bus_dmamap_create(sc->sc_dmat, PAGE_SIZE, 1, PAGE_SIZE, 0, 1253 dmaflags, &rc->rc_dmap)) { 1254 DPRINTF("%s: failed to create RNDIS command map\n", 1255 device_xname(sc->sc_dev)); 1256 goto errout; 1257 } 1258 if (bus_dmamem_alloc(sc->sc_dmat, PAGE_SIZE, PAGE_SIZE, 1259 0, &rc->rc_segs, 1, &rc->rc_nsegs, dmaflags)) { 1260 DPRINTF("%s: failed to allocate RNDIS command\n", 1261 device_xname(sc->sc_dev)); 1262 bus_dmamap_destroy(sc->sc_dmat, rc->rc_dmap); 1263 goto errout; 1264 } 1265 if (bus_dmamem_map(sc->sc_dmat, &rc->rc_segs, rc->rc_nsegs, 1266 PAGE_SIZE, (void **)&rc->rc_req, dmaflags)) { 1267 DPRINTF("%s: failed to allocate RNDIS command\n", 1268 device_xname(sc->sc_dev)); 1269 bus_dmamem_free(sc->sc_dmat, &rc->rc_segs, 1270 rc->rc_nsegs); 1271 bus_dmamap_destroy(sc->sc_dmat, rc->rc_dmap); 1272 goto errout; 1273 } 1274 memset(rc->rc_req, 0, PAGE_SIZE); 1275 if (bus_dmamap_load(sc->sc_dmat, rc->rc_dmap, rc->rc_req, 1276 PAGE_SIZE, NULL, dmaflags)) { 1277 DPRINTF("%s: failed to load RNDIS command map\n", 1278 device_xname(sc->sc_dev)); 1279 bus_dmamem_free(sc->sc_dmat, &rc->rc_segs, 1280 rc->rc_nsegs); 1281 bus_dmamap_destroy(sc->sc_dmat, rc->rc_dmap); 1282 goto errout; 1283 } 1284 rc->rc_gpa = atop(rc->rc_dmap->dm_segs[0].ds_addr); 1285 TAILQ_INSERT_TAIL(&sc->sc_cntl_fq, rc, rc_entry); 1286 } 1287 1288 rc = hvn_alloc_cmd(sc); 1289 1290 bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE, 1291 BUS_DMASYNC_PREREAD); 1292 1293 rc->rc_id = atomic_inc_uint_nv(&sc->sc_rndisrid); 1294 1295 req = rc->rc_req; 1296 req->rm_type = REMOTE_NDIS_INITIALIZE_MSG; 1297 req->rm_len = sizeof(*req); 1298 req->rm_rid = rc->rc_id; 1299 req->rm_ver_major = RNDIS_VERSION_MAJOR; 1300 req->rm_ver_minor = RNDIS_VERSION_MINOR; 1301 req->rm_max_xfersz = HVN_RNDIS_XFER_SIZE; 1302 1303 rc->rc_cmplen = sizeof(*cmp); 1304 1305 bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE, 1306 BUS_DMASYNC_PREWRITE); 1307 1308 if ((rv = hvn_rndis_cmd(sc, rc, 500)) != 0) { 1309 DPRINTF("%s: INITIALIZE_MSG failed, error %d\n", 1310 device_xname(sc->sc_dev), rv); 1311 hvn_free_cmd(sc, rc); 1312 goto errout; 1313 } 1314 cmp = (struct rndis_init_comp *)&rc->rc_cmp; 1315 if (cmp->rm_status != RNDIS_STATUS_SUCCESS) { 1316 DPRINTF("%s: failed to init RNDIS, error %#x\n", 1317 device_xname(sc->sc_dev), cmp->rm_status); 1318 hvn_free_cmd(sc, rc); 1319 goto errout; 1320 } 1321 1322 hvn_free_cmd(sc, rc); 1323 1324 /* Initialize RNDIS Data command */ 1325 memset(&sc->sc_data_msg, 0, sizeof(sc->sc_data_msg)); 1326 sc->sc_data_msg.nvs_type = HVN_NVS_TYPE_RNDIS; 1327 sc->sc_data_msg.nvs_rndis_mtype = HVN_NVS_RNDIS_MTYPE_DATA; 1328 sc->sc_data_msg.nvs_chim_idx = HVN_NVS_CHIM_IDX_INVALID; 1329 1330 return 0; 1331 1332 errout: 1333 for (i = 0; i < HVN_RNDIS_CTLREQS; i++) { 1334 rc = &sc->sc_cntl_msgs[i]; 1335 if (rc->rc_req == NULL) 1336 continue; 1337 TAILQ_REMOVE(&sc->sc_cntl_fq, rc, rc_entry); 1338 bus_dmamem_free(sc->sc_dmat, &rc->rc_segs, rc->rc_nsegs); 1339 rc->rc_req = NULL; 1340 bus_dmamap_destroy(sc->sc_dmat, rc->rc_dmap); 1341 } 1342 return -1; 1343 } 1344 1345 static int 1346 hvn_set_capabilities(struct hvn_softc *sc) 1347 { 1348 struct ndis_offload_params params; 1349 size_t len = sizeof(params); 1350 1351 memset(¶ms, 0, sizeof(params)); 1352 1353 params.ndis_hdr.ndis_type = NDIS_OBJTYPE_DEFAULT; 1354 if (sc->sc_ndisver < NDIS_VERSION_6_30) { 1355 params.ndis_hdr.ndis_rev = NDIS_OFFLOAD_PARAMS_REV_2; 1356 len = params.ndis_hdr.ndis_size = NDIS_OFFLOAD_PARAMS_SIZE_6_1; 1357 } else { 1358 params.ndis_hdr.ndis_rev = NDIS_OFFLOAD_PARAMS_REV_3; 1359 len = params.ndis_hdr.ndis_size = NDIS_OFFLOAD_PARAMS_SIZE; 1360 } 1361 1362 params.ndis_ip4csum = NDIS_OFFLOAD_PARAM_TXRX; 1363 params.ndis_tcp4csum = NDIS_OFFLOAD_PARAM_TXRX; 1364 params.ndis_tcp6csum = NDIS_OFFLOAD_PARAM_TXRX; 1365 if (sc->sc_ndisver >= NDIS_VERSION_6_30) { 1366 params.ndis_udp4csum = NDIS_OFFLOAD_PARAM_TXRX; 1367 params.ndis_udp6csum = NDIS_OFFLOAD_PARAM_TXRX; 1368 } 1369 1370 return hvn_rndis_set(sc, OID_TCP_OFFLOAD_PARAMETERS, ¶ms, len); 1371 } 1372 1373 static int 1374 hvn_rndis_cmd(struct hvn_softc *sc, struct rndis_cmd *rc, int timo) 1375 { 1376 struct hvn_nvs_rndis *msg = &rc->rc_msg; 1377 struct rndis_msghdr *hdr = rc->rc_req; 1378 struct vmbus_gpa sgl[1]; 1379 int tries = 10; 1380 int rv, s; 1381 1382 KASSERT(timo > 0); 1383 1384 msg->nvs_type = HVN_NVS_TYPE_RNDIS; 1385 msg->nvs_rndis_mtype = HVN_NVS_RNDIS_MTYPE_CTRL; 1386 msg->nvs_chim_idx = HVN_NVS_CHIM_IDX_INVALID; 1387 1388 sgl[0].gpa_page = rc->rc_gpa; 1389 sgl[0].gpa_len = hdr->rm_len; 1390 sgl[0].gpa_ofs = 0; 1391 1392 rc->rc_done = 0; 1393 1394 hvn_submit_cmd(sc, rc); 1395 1396 do { 1397 rv = vmbus_channel_send_sgl(sc->sc_chan, sgl, 1, &rc->rc_msg, 1398 sizeof(*msg), rc->rc_id); 1399 if (rv == EAGAIN) { 1400 if (cold) 1401 delay(1000); 1402 else 1403 tsleep(rc, PRIBIO, "rndisout", mstohz(1)); 1404 } else if (rv) { 1405 DPRINTF("%s: RNDIS operation %u send error %d\n", 1406 device_xname(sc->sc_dev), hdr->rm_type, rv); 1407 hvn_rollback_cmd(sc, rc); 1408 return rv; 1409 } 1410 } while (rv != 0 && --tries > 0); 1411 1412 if (tries == 0 && rv != 0) { 1413 device_printf(sc->sc_dev, 1414 "RNDIS operation %u send error %d\n", hdr->rm_type, rv); 1415 return rv; 1416 } 1417 1418 bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE, 1419 BUS_DMASYNC_POSTWRITE); 1420 1421 do { 1422 if (cold) { 1423 delay(1000); 1424 s = splnet(); 1425 hvn_nvs_intr(sc); 1426 splx(s); 1427 } else 1428 tsleep(rc, PRIBIO | PCATCH, "rndiscmd", mstohz(1)); 1429 } while (--timo > 0 && rc->rc_done != 1); 1430 1431 bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE, 1432 BUS_DMASYNC_POSTREAD); 1433 1434 if (rc->rc_done != 1) { 1435 rv = timo == 0 ? ETIMEDOUT : EINTR; 1436 if (hvn_rollback_cmd(sc, rc)) { 1437 hvn_release_cmd(sc, rc); 1438 rv = 0; 1439 } else if (rv == ETIMEDOUT) { 1440 device_printf(sc->sc_dev, 1441 "RNDIS operation %u timed out\n", hdr->rm_type); 1442 } 1443 return rv; 1444 } 1445 1446 hvn_release_cmd(sc, rc); 1447 return 0; 1448 } 1449 1450 static void 1451 hvn_rndis_input(struct hvn_softc *sc, uint64_t tid, void *arg) 1452 { 1453 struct vmbus_chanpkt_prplist *cp = arg; 1454 uint32_t off, len, type; 1455 int i; 1456 1457 if (sc->sc_rx_ring == NULL) { 1458 DPRINTF("%s: invalid rx ring\n", device_xname(sc->sc_dev)); 1459 return; 1460 } 1461 1462 for (i = 0; i < cp->cp_range_cnt; i++) { 1463 off = cp->cp_range[i].gpa_ofs; 1464 len = cp->cp_range[i].gpa_len; 1465 1466 KASSERT(off + len <= sc->sc_rx_size); 1467 KASSERT(len >= RNDIS_HEADER_OFFSET + 4); 1468 1469 memcpy(&type, sc->sc_rx_ring + off, sizeof(type)); 1470 switch (type) { 1471 /* data message */ 1472 case REMOTE_NDIS_PACKET_MSG: 1473 hvn_rxeof(sc, sc->sc_rx_ring + off, len); 1474 break; 1475 /* completion messages */ 1476 case REMOTE_NDIS_INITIALIZE_CMPLT: 1477 case REMOTE_NDIS_QUERY_CMPLT: 1478 case REMOTE_NDIS_SET_CMPLT: 1479 case REMOTE_NDIS_RESET_CMPLT: 1480 case REMOTE_NDIS_KEEPALIVE_CMPLT: 1481 hvn_rndis_complete(sc, sc->sc_rx_ring + off, len); 1482 break; 1483 /* notification message */ 1484 case REMOTE_NDIS_INDICATE_STATUS_MSG: 1485 hvn_rndis_status(sc, sc->sc_rx_ring + off, len); 1486 break; 1487 default: 1488 device_printf(sc->sc_dev, 1489 "unhandled RNDIS message type %u\n", type); 1490 break; 1491 } 1492 } 1493 1494 hvn_nvs_ack(sc, tid); 1495 } 1496 1497 static inline struct mbuf * 1498 hvn_devget(struct hvn_softc *sc, void *buf, uint32_t len) 1499 { 1500 struct ifnet *ifp = SC2IFP(sc); 1501 struct mbuf *m; 1502 size_t size = len + ETHER_ALIGN; 1503 1504 MGETHDR(m, M_NOWAIT, MT_DATA); 1505 if (m == NULL) 1506 return NULL; 1507 1508 if (size > MHLEN) { 1509 if (size <= MCLBYTES) 1510 MCLGET(m, M_NOWAIT); 1511 else 1512 MEXTMALLOC(m, size, M_NOWAIT); 1513 if ((m->m_flags & M_EXT) == 0) { 1514 m_freem(m); 1515 return NULL; 1516 } 1517 } 1518 1519 m->m_len = m->m_pkthdr.len = size; 1520 m_adj(m, ETHER_ALIGN); 1521 m_copyback(m, 0, len, buf); 1522 m_set_rcvif(m, ifp); 1523 return m; 1524 } 1525 1526 static void 1527 hvn_rxeof(struct hvn_softc *sc, uint8_t *buf, uint32_t len) 1528 { 1529 struct ifnet *ifp = SC2IFP(sc); 1530 struct rndis_packet_msg *pkt; 1531 struct rndis_pktinfo *pi; 1532 uint32_t csum, vlan; 1533 struct mbuf *m; 1534 1535 if (!(ifp->if_flags & IFF_RUNNING)) 1536 return; 1537 1538 if (len < sizeof(*pkt)) { 1539 device_printf(sc->sc_dev, "data packet too short: %u\n", 1540 len); 1541 return; 1542 } 1543 1544 pkt = (struct rndis_packet_msg *)buf; 1545 if (pkt->rm_dataoffset + pkt->rm_datalen > len) { 1546 device_printf(sc->sc_dev, 1547 "data packet out of bounds: %u@%u\n", pkt->rm_dataoffset, 1548 pkt->rm_datalen); 1549 return; 1550 } 1551 1552 if ((m = hvn_devget(sc, buf + RNDIS_HEADER_OFFSET + pkt->rm_dataoffset, 1553 pkt->rm_datalen)) == NULL) { 1554 ifp->if_ierrors++; 1555 return; 1556 } 1557 1558 if (pkt->rm_pktinfooffset + pkt->rm_pktinfolen > len) { 1559 device_printf(sc->sc_dev, 1560 "pktinfo is out of bounds: %u@%u vs %u\n", 1561 pkt->rm_pktinfolen, pkt->rm_pktinfooffset, len); 1562 goto done; 1563 } 1564 1565 pi = (struct rndis_pktinfo *)(buf + RNDIS_HEADER_OFFSET + 1566 pkt->rm_pktinfooffset); 1567 while (pkt->rm_pktinfolen > 0) { 1568 if (pi->rm_size > pkt->rm_pktinfolen) { 1569 device_printf(sc->sc_dev, 1570 "invalid pktinfo size: %u/%u\n", pi->rm_size, 1571 pkt->rm_pktinfolen); 1572 break; 1573 } 1574 1575 switch (pi->rm_type) { 1576 case NDIS_PKTINFO_TYPE_CSUM: 1577 memcpy(&csum, pi->rm_data, sizeof(csum)); 1578 if (csum & NDIS_RXCSUM_INFO_IPCS_OK) 1579 m->m_pkthdr.csum_flags |= M_CSUM_IPv4; 1580 if (csum & NDIS_RXCSUM_INFO_TCPCS_OK) 1581 m->m_pkthdr.csum_flags |= M_CSUM_TCPv4; 1582 if (csum & NDIS_RXCSUM_INFO_UDPCS_OK) 1583 m->m_pkthdr.csum_flags |= M_CSUM_UDPv4; 1584 break; 1585 case NDIS_PKTINFO_TYPE_VLAN: 1586 memcpy(&vlan, pi->rm_data, sizeof(vlan)); 1587 if (vlan != 0xffffffff) { 1588 m->m_pkthdr.ether_vtag = 1589 NDIS_VLAN_INFO_ID(vlan) | 1590 (NDIS_VLAN_INFO_PRI(vlan) << EVL_PRIO_BITS); 1591 m->m_flags |= M_VLANTAG; 1592 } 1593 break; 1594 default: 1595 DPRINTF("%s: unhandled pktinfo type %u\n", 1596 device_xname(sc->sc_dev), pi->rm_type); 1597 break; 1598 } 1599 1600 pkt->rm_pktinfolen -= pi->rm_size; 1601 pi = (struct rndis_pktinfo *)((char *)pi + pi->rm_size); 1602 } 1603 1604 done: 1605 if_percpuq_enqueue(sc->sc_ipq, m); 1606 } 1607 1608 static void 1609 hvn_rndis_complete(struct hvn_softc *sc, uint8_t *buf, uint32_t len) 1610 { 1611 struct rndis_cmd *rc; 1612 uint32_t id; 1613 1614 memcpy(&id, buf + RNDIS_HEADER_OFFSET, sizeof(id)); 1615 if ((rc = hvn_complete_cmd(sc, id)) != NULL) { 1616 if (len < rc->rc_cmplen) 1617 device_printf(sc->sc_dev, 1618 "RNDIS response %u too short: %u\n", id, len); 1619 else 1620 memcpy(&rc->rc_cmp, buf, rc->rc_cmplen); 1621 if (len > rc->rc_cmplen && 1622 len - rc->rc_cmplen > HVN_RNDIS_BUFSIZE) 1623 device_printf(sc->sc_dev, 1624 "RNDIS response %u too large: %u\n", id, len); 1625 else if (len > rc->rc_cmplen) 1626 memcpy(&rc->rc_cmpbuf, buf + rc->rc_cmplen, 1627 len - rc->rc_cmplen); 1628 rc->rc_done = 1; 1629 wakeup(rc); 1630 } else { 1631 DPRINTF("%s: failed to complete RNDIS request id %u\n", 1632 device_xname(sc->sc_dev), id); 1633 } 1634 } 1635 1636 static int 1637 hvn_rndis_output(struct hvn_softc *sc, struct hvn_tx_desc *txd) 1638 { 1639 uint64_t rid = (uint64_t)txd->txd_id << 32; 1640 int rv; 1641 1642 rv = vmbus_channel_send_sgl(sc->sc_chan, txd->txd_sgl, txd->txd_nsge, 1643 &sc->sc_data_msg, sizeof(sc->sc_data_msg), rid); 1644 if (rv) { 1645 DPRINTF("%s: RNDIS data send error %d\n", 1646 device_xname(sc->sc_dev), rv); 1647 return rv; 1648 } 1649 return 0; 1650 } 1651 1652 static void 1653 hvn_rndis_status(struct hvn_softc *sc, uint8_t *buf, uint32_t len) 1654 { 1655 struct ifnet *ifp = SC2IFP(sc); 1656 uint32_t status; 1657 int link_state = sc->sc_link_state; 1658 1659 memcpy(&status, buf + RNDIS_HEADER_OFFSET, sizeof(status)); 1660 switch (status) { 1661 case RNDIS_STATUS_MEDIA_CONNECT: 1662 sc->sc_link_state = LINK_STATE_UP; 1663 break; 1664 case RNDIS_STATUS_MEDIA_DISCONNECT: 1665 sc->sc_link_state = LINK_STATE_DOWN; 1666 break; 1667 /* Ignore these */ 1668 case RNDIS_STATUS_OFFLOAD_CURRENT_CONFIG: 1669 return; 1670 default: 1671 DPRINTF("%s: unhandled status %#x\n", device_xname(sc->sc_dev), 1672 status); 1673 return; 1674 } 1675 if (link_state != sc->sc_link_state) 1676 if_link_state_change(ifp, sc->sc_link_state); 1677 } 1678 1679 static int 1680 hvn_rndis_query(struct hvn_softc *sc, uint32_t oid, void *res, size_t *length) 1681 { 1682 struct rndis_cmd *rc; 1683 struct rndis_query_req *req; 1684 struct rndis_query_comp *cmp; 1685 size_t olength = *length; 1686 int rv; 1687 1688 rc = hvn_alloc_cmd(sc); 1689 1690 bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE, 1691 BUS_DMASYNC_PREREAD); 1692 1693 rc->rc_id = atomic_inc_uint_nv(&sc->sc_rndisrid); 1694 1695 req = rc->rc_req; 1696 req->rm_type = REMOTE_NDIS_QUERY_MSG; 1697 req->rm_len = sizeof(*req); 1698 req->rm_rid = rc->rc_id; 1699 req->rm_oid = oid; 1700 req->rm_infobufoffset = sizeof(*req) - RNDIS_HEADER_OFFSET; 1701 1702 rc->rc_cmplen = sizeof(*cmp); 1703 1704 bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE, 1705 BUS_DMASYNC_PREWRITE); 1706 1707 if ((rv = hvn_rndis_cmd(sc, rc, 500)) != 0) { 1708 DPRINTF("%s: QUERY_MSG failed, error %d\n", 1709 device_xname(sc->sc_dev), rv); 1710 hvn_free_cmd(sc, rc); 1711 return rv; 1712 } 1713 1714 cmp = (struct rndis_query_comp *)&rc->rc_cmp; 1715 switch (cmp->rm_status) { 1716 case RNDIS_STATUS_SUCCESS: 1717 if (cmp->rm_infobuflen > olength) { 1718 rv = EINVAL; 1719 break; 1720 } 1721 memcpy(res, rc->rc_cmpbuf, cmp->rm_infobuflen); 1722 *length = cmp->rm_infobuflen; 1723 break; 1724 default: 1725 *length = 0; 1726 rv = EIO; 1727 break; 1728 } 1729 1730 hvn_free_cmd(sc, rc); 1731 return rv; 1732 } 1733 1734 static int 1735 hvn_rndis_set(struct hvn_softc *sc, uint32_t oid, void *data, size_t length) 1736 { 1737 struct rndis_cmd *rc; 1738 struct rndis_set_req *req; 1739 struct rndis_set_comp *cmp; 1740 int rv; 1741 1742 rc = hvn_alloc_cmd(sc); 1743 1744 bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE, 1745 BUS_DMASYNC_PREREAD); 1746 1747 rc->rc_id = atomic_inc_uint_nv(&sc->sc_rndisrid); 1748 1749 req = rc->rc_req; 1750 req->rm_type = REMOTE_NDIS_SET_MSG; 1751 req->rm_len = sizeof(*req) + length; 1752 req->rm_rid = rc->rc_id; 1753 req->rm_oid = oid; 1754 req->rm_infobufoffset = sizeof(*req) - RNDIS_HEADER_OFFSET; 1755 1756 rc->rc_cmplen = sizeof(*cmp); 1757 1758 if (length > 0) { 1759 KASSERT(sizeof(*req) + length < PAGE_SIZE); 1760 req->rm_infobuflen = length; 1761 memcpy(req + 1, data, length); 1762 } 1763 1764 bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE, 1765 BUS_DMASYNC_PREWRITE); 1766 1767 if ((rv = hvn_rndis_cmd(sc, rc, 500)) != 0) { 1768 DPRINTF("%s: SET_MSG failed, error %d\n", 1769 device_xname(sc->sc_dev), rv); 1770 hvn_free_cmd(sc, rc); 1771 return rv; 1772 } 1773 1774 cmp = (struct rndis_set_comp *)&rc->rc_cmp; 1775 if (cmp->rm_status != RNDIS_STATUS_SUCCESS) 1776 rv = EIO; 1777 1778 hvn_free_cmd(sc, rc); 1779 return rv; 1780 } 1781 1782 static int 1783 hvn_rndis_open(struct hvn_softc *sc) 1784 { 1785 uint32_t filter; 1786 int rv; 1787 1788 if (sc->sc_promisc) 1789 filter = RNDIS_PACKET_TYPE_PROMISCUOUS; 1790 else 1791 filter = RNDIS_PACKET_TYPE_BROADCAST | 1792 RNDIS_PACKET_TYPE_ALL_MULTICAST | 1793 RNDIS_PACKET_TYPE_DIRECTED; 1794 1795 rv = hvn_rndis_set(sc, OID_GEN_CURRENT_PACKET_FILTER, 1796 &filter, sizeof(filter)); 1797 if (rv) { 1798 DPRINTF("%s: failed to set RNDIS filter to %#x\n", 1799 device_xname(sc->sc_dev), filter); 1800 } 1801 return rv; 1802 } 1803 1804 static int 1805 hvn_rndis_close(struct hvn_softc *sc) 1806 { 1807 uint32_t filter = 0; 1808 int rv; 1809 1810 rv = hvn_rndis_set(sc, OID_GEN_CURRENT_PACKET_FILTER, 1811 &filter, sizeof(filter)); 1812 if (rv) { 1813 DPRINTF("%s: failed to clear RNDIS filter\n", 1814 device_xname(sc->sc_dev)); 1815 } 1816 return rv; 1817 } 1818 1819 static void 1820 hvn_rndis_detach(struct hvn_softc *sc) 1821 { 1822 struct rndis_cmd *rc; 1823 struct rndis_halt_req *req; 1824 int rv; 1825 1826 rc = hvn_alloc_cmd(sc); 1827 1828 bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE, 1829 BUS_DMASYNC_PREREAD); 1830 1831 rc->rc_id = atomic_inc_uint_nv(&sc->sc_rndisrid); 1832 1833 req = rc->rc_req; 1834 req->rm_type = REMOTE_NDIS_HALT_MSG; 1835 req->rm_len = sizeof(*req); 1836 req->rm_rid = rc->rc_id; 1837 1838 bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE, 1839 BUS_DMASYNC_PREWRITE); 1840 1841 if ((rv = hvn_rndis_cmd(sc, rc, 500)) != 0) { 1842 DPRINTF("%s: HALT_MSG failed, error %d\n", 1843 device_xname(sc->sc_dev), rv); 1844 } 1845 hvn_free_cmd(sc, rc); 1846 } 1847
Indexes created Thu Oct 02 14:10:14 GMT 2025