if_hvn.c revision 1.6
1 /* $NetBSD: if_hvn.c,v 1.6 2019/11/15 08:51:27 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 1.6 2019/11/15 08:51:27 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) == 0 && 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, 0, 0, 636 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 637 bus_dmamap_unload(sc->sc_dmat, txd->txd_dmap); 638 txd->txd_buf = NULL; 639 txd->txd_nsge = 0; 640 txd->txd_ready = 1; 641 atomic_inc_uint(&sc->sc_tx_avail); 642 ifp->if_flags &= ~IFF_OACTIVE; 643 } 644 645 static void 646 hvn_txeof(struct hvn_softc *sc, uint64_t tid) 647 { 648 struct ifnet *ifp = SC2IFP(sc); 649 struct hvn_tx_desc *txd; 650 struct mbuf *m; 651 uint32_t id = tid >> 32; 652 653 if ((tid & 0xffffffffU) != 0) 654 return; 655 656 id -= HVN_NVS_CHIM_SIG; 657 if (id >= HVN_TX_DESC) { 658 device_printf(sc->sc_dev, "tx packet index too large: %u", id); 659 return; 660 } 661 662 txd = &sc->sc_tx_desc[id]; 663 664 if ((m = txd->txd_buf) == NULL) { 665 device_printf(sc->sc_dev, "no mbuf @%u\n", id); 666 return; 667 } 668 txd->txd_buf = NULL; 669 670 bus_dmamap_sync(sc->sc_dmat, txd->txd_dmap, 0, 0, 671 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 672 bus_dmamap_unload(sc->sc_dmat, txd->txd_dmap); 673 m_freem(m); 674 ifp->if_opackets++; 675 676 txd->txd_ready = 1; 677 678 atomic_inc_uint(&sc->sc_tx_avail); 679 ifp->if_flags &= ~IFF_OACTIVE; 680 } 681 682 static int 683 hvn_rx_ring_create(struct hvn_softc *sc) 684 { 685 struct hvn_nvs_rxbuf_conn cmd; 686 struct hvn_nvs_rxbuf_conn_resp *rsp; 687 uint64_t tid; 688 689 if (sc->sc_proto <= HVN_NVS_PROTO_VERSION_2) 690 sc->sc_rx_size = 15 * 1024 * 1024; /* 15MB */ 691 else 692 sc->sc_rx_size = 16 * 1024 * 1024; /* 16MB */ 693 sc->sc_rx_ring = hyperv_dma_alloc(sc->sc_dmat, &sc->sc_rx_dma, 694 sc->sc_rx_size, PAGE_SIZE, PAGE_SIZE, sc->sc_rx_size / PAGE_SIZE); 695 if (sc->sc_rx_ring == NULL) { 696 DPRINTF("%s: failed to allocate Rx ring buffer\n", 697 device_xname(sc->sc_dev)); 698 return -1; 699 } 700 if (vmbus_handle_alloc(sc->sc_chan, &sc->sc_rx_dma, sc->sc_rx_size, 701 &sc->sc_rx_hndl)) { 702 DPRINTF("%s: failed to obtain a PA handle\n", 703 device_xname(sc->sc_dev)); 704 goto errout; 705 } 706 707 memset(&cmd, 0, sizeof(cmd)); 708 cmd.nvs_type = HVN_NVS_TYPE_RXBUF_CONN; 709 cmd.nvs_gpadl = sc->sc_rx_hndl; 710 cmd.nvs_sig = HVN_NVS_RXBUF_SIG; 711 712 tid = atomic_inc_uint_nv(&sc->sc_nvstid); 713 if (hvn_nvs_cmd(sc, &cmd, sizeof(cmd), tid, 100)) 714 goto errout; 715 716 rsp = (struct hvn_nvs_rxbuf_conn_resp *)&sc->sc_nvsrsp; 717 if (rsp->nvs_status != HVN_NVS_STATUS_OK) { 718 DPRINTF("%s: failed to set up the Rx ring\n", 719 device_xname(sc->sc_dev)); 720 goto errout; 721 } 722 if (rsp->nvs_nsect > 1) { 723 DPRINTF("%s: invalid number of Rx ring sections: %u\n", 724 device_xname(sc->sc_dev), rsp->nvs_nsect); 725 hvn_rx_ring_destroy(sc); 726 return -1; 727 } 728 return 0; 729 730 errout: 731 if (sc->sc_rx_hndl) { 732 vmbus_handle_free(sc->sc_chan, sc->sc_rx_hndl); 733 sc->sc_rx_hndl = 0; 734 } 735 if (sc->sc_rx_ring) { 736 kmem_free(sc->sc_rx_ring, sc->sc_rx_size); 737 sc->sc_rx_ring = NULL; 738 } 739 return -1; 740 } 741 742 static int 743 hvn_rx_ring_destroy(struct hvn_softc *sc) 744 { 745 struct hvn_nvs_rxbuf_disconn cmd; 746 uint64_t tid; 747 748 if (sc->sc_rx_ring == NULL) 749 return 0; 750 751 memset(&cmd, 0, sizeof(cmd)); 752 cmd.nvs_type = HVN_NVS_TYPE_RXBUF_DISCONN; 753 cmd.nvs_sig = HVN_NVS_RXBUF_SIG; 754 755 tid = atomic_inc_uint_nv(&sc->sc_nvstid); 756 if (hvn_nvs_cmd(sc, &cmd, sizeof(cmd), tid, 0)) 757 return -1; 758 759 delay(100); 760 761 vmbus_handle_free(sc->sc_chan, sc->sc_rx_hndl); 762 763 sc->sc_rx_hndl = 0; 764 765 kmem_free(sc->sc_rx_ring, sc->sc_rx_size); 766 sc->sc_rx_ring = NULL; 767 768 return 0; 769 } 770 771 static int 772 hvn_tx_ring_create(struct hvn_softc *sc) 773 { 774 const int dmaflags = cold ? BUS_DMA_NOWAIT : BUS_DMA_WAITOK; 775 struct hvn_tx_desc *txd; 776 bus_dma_segment_t *seg; 777 size_t msgsize; 778 int i, rsegs; 779 paddr_t pa; 780 781 msgsize = roundup(HVN_RNDIS_PKT_LEN, 128); 782 783 /* Allocate memory to store RNDIS messages */ 784 if (bus_dmamem_alloc(sc->sc_dmat, msgsize * HVN_TX_DESC, PAGE_SIZE, 0, 785 &sc->sc_tx_mseg, 1, &rsegs, dmaflags)) { 786 DPRINTF("%s: failed to allocate memory for RDNIS messages\n", 787 device_xname(sc->sc_dev)); 788 goto errout; 789 } 790 if (bus_dmamem_map(sc->sc_dmat, &sc->sc_tx_mseg, 1, msgsize * 791 HVN_TX_DESC, (void **)&sc->sc_tx_msgs, dmaflags)) { 792 DPRINTF("%s: failed to establish mapping for RDNIS messages\n", 793 device_xname(sc->sc_dev)); 794 goto errout; 795 } 796 memset(sc->sc_tx_msgs, 0, msgsize * HVN_TX_DESC); 797 if (bus_dmamap_create(sc->sc_dmat, msgsize * HVN_TX_DESC, 1, 798 msgsize * HVN_TX_DESC, 0, dmaflags, &sc->sc_tx_rmap)) { 799 DPRINTF("%s: failed to create map for RDNIS messages\n", 800 device_xname(sc->sc_dev)); 801 goto errout; 802 } 803 if (bus_dmamap_load(sc->sc_dmat, sc->sc_tx_rmap, sc->sc_tx_msgs, 804 msgsize * HVN_TX_DESC, NULL, dmaflags)) { 805 DPRINTF("%s: failed to create map for RDNIS messages\n", 806 device_xname(sc->sc_dev)); 807 goto errout; 808 } 809 810 for (i = 0; i < HVN_TX_DESC; i++) { 811 txd = &sc->sc_tx_desc[i]; 812 if (bus_dmamap_create(sc->sc_dmat, HVN_TX_PKT_SIZE, 813 HVN_TX_FRAGS, HVN_TX_FRAG_SIZE, PAGE_SIZE, dmaflags, 814 &txd->txd_dmap)) { 815 DPRINTF("%s: failed to create map for TX descriptors\n", 816 device_xname(sc->sc_dev)); 817 goto errout; 818 } 819 seg = &sc->sc_tx_rmap->dm_segs[0]; 820 pa = seg->ds_addr + (msgsize * i); 821 txd->txd_gpa.gpa_page = atop(pa); 822 txd->txd_gpa.gpa_ofs = pa & PAGE_MASK; 823 txd->txd_gpa.gpa_len = msgsize; 824 txd->txd_req = (void *)(sc->sc_tx_msgs + (msgsize * i)); 825 txd->txd_id = i + HVN_NVS_CHIM_SIG; 826 txd->txd_ready = 1; 827 } 828 sc->sc_tx_avail = HVN_TX_DESC; 829 830 return 0; 831 832 errout: 833 hvn_tx_ring_destroy(sc); 834 return -1; 835 } 836 837 static void 838 hvn_tx_ring_destroy(struct hvn_softc *sc) 839 { 840 struct hvn_tx_desc *txd; 841 int i; 842 843 for (i = 0; i < HVN_TX_DESC; i++) { 844 txd = &sc->sc_tx_desc[i]; 845 if (txd->txd_dmap == NULL) 846 continue; 847 bus_dmamap_sync(sc->sc_dmat, txd->txd_dmap, 0, 0, 848 BUS_DMASYNC_POSTWRITE); 849 bus_dmamap_unload(sc->sc_dmat, txd->txd_dmap); 850 bus_dmamap_destroy(sc->sc_dmat, txd->txd_dmap); 851 txd->txd_dmap = NULL; 852 if (txd->txd_buf == NULL) 853 continue; 854 m_free(txd->txd_buf); 855 txd->txd_buf = NULL; 856 } 857 if (sc->sc_tx_rmap) { 858 bus_dmamap_sync(sc->sc_dmat, sc->sc_tx_rmap, 0, 0, 859 BUS_DMASYNC_POSTWRITE); 860 bus_dmamap_unload(sc->sc_dmat, sc->sc_tx_rmap); 861 bus_dmamap_destroy(sc->sc_dmat, sc->sc_tx_rmap); 862 } 863 if (sc->sc_tx_msgs) { 864 size_t msgsize = roundup(HVN_RNDIS_PKT_LEN, 128); 865 866 bus_dmamem_unmap(sc->sc_dmat, sc->sc_tx_msgs, 867 msgsize * HVN_TX_DESC); 868 bus_dmamem_free(sc->sc_dmat, &sc->sc_tx_mseg, 1); 869 } 870 sc->sc_tx_rmap = NULL; 871 sc->sc_tx_msgs = NULL; 872 } 873 874 static int 875 hvn_get_lladdr(struct hvn_softc *sc, uint8_t *enaddr) 876 { 877 size_t addrlen = ETHER_ADDR_LEN; 878 int rv; 879 880 rv = hvn_rndis_query(sc, OID_802_3_PERMANENT_ADDRESS, enaddr, &addrlen); 881 if (rv == 0 && addrlen != ETHER_ADDR_LEN) 882 rv = -1; 883 return rv; 884 } 885 886 static void 887 hvn_get_link_status(struct hvn_softc *sc) 888 { 889 uint32_t state; 890 size_t len = sizeof(state); 891 892 if (hvn_rndis_query(sc, OID_GEN_MEDIA_CONNECT_STATUS, 893 &state, &len) == 0) 894 sc->sc_link_state = (state == NDIS_MEDIA_STATE_CONNECTED) ? 895 LINK_STATE_UP : LINK_STATE_DOWN; 896 } 897 898 static int 899 hvn_nvs_attach(struct hvn_softc *sc) 900 { 901 static const uint32_t protos[] = { 902 HVN_NVS_PROTO_VERSION_5, 903 HVN_NVS_PROTO_VERSION_4, 904 HVN_NVS_PROTO_VERSION_2, 905 HVN_NVS_PROTO_VERSION_1 906 }; 907 struct hvn_nvs_init cmd; 908 struct hvn_nvs_init_resp *rsp; 909 struct hvn_nvs_ndis_init ncmd; 910 struct hvn_nvs_ndis_conf ccmd; 911 uint32_t ndisver, ringsize; 912 uint64_t tid; 913 int i; 914 915 sc->sc_nvsbuf = kmem_zalloc(HVN_NVS_BUFSIZE, KM_SLEEP); 916 917 /* We need to be able to fit all RNDIS control and data messages */ 918 ringsize = HVN_RNDIS_CTLREQS * 919 (sizeof(struct hvn_nvs_rndis) + sizeof(struct vmbus_gpa)) + 920 HVN_TX_DESC * (sizeof(struct hvn_nvs_rndis) + 921 (HVN_TX_FRAGS + 1) * sizeof(struct vmbus_gpa)); 922 923 sc->sc_chan->ch_flags &= ~CHF_BATCHED; 924 925 /* Associate our interrupt handler with the channel */ 926 if (vmbus_channel_open(sc->sc_chan, ringsize, NULL, 0, 927 hvn_nvs_intr, sc)) { 928 DPRINTF("%s: failed to open channel\n", 929 device_xname(sc->sc_dev)); 930 kmem_free(sc->sc_nvsbuf, HVN_NVS_BUFSIZE); 931 return -1; 932 } 933 934 memset(&cmd, 0, sizeof(cmd)); 935 cmd.nvs_type = HVN_NVS_TYPE_INIT; 936 for (i = 0; i < __arraycount(protos); i++) { 937 cmd.nvs_ver_min = cmd.nvs_ver_max = protos[i]; 938 tid = atomic_inc_uint_nv(&sc->sc_nvstid); 939 if (hvn_nvs_cmd(sc, &cmd, sizeof(cmd), tid, 100)) 940 return -1; 941 942 rsp = (struct hvn_nvs_init_resp *)&sc->sc_nvsrsp; 943 if (rsp->nvs_status == HVN_NVS_STATUS_OK) { 944 sc->sc_proto = protos[i]; 945 break; 946 } 947 } 948 if (i == __arraycount(protos)) { 949 DPRINTF("%s: failed to negotiate NVSP version\n", 950 device_xname(sc->sc_dev)); 951 return -1; 952 } 953 954 if (sc->sc_proto >= HVN_NVS_PROTO_VERSION_2) { 955 memset(&ccmd, 0, sizeof(ccmd)); 956 ccmd.nvs_type = HVN_NVS_TYPE_NDIS_CONF; 957 ccmd.nvs_mtu = HVN_MAXMTU; 958 ccmd.nvs_caps = HVN_NVS_NDIS_CONF_VLAN; 959 960 tid = atomic_inc_uint_nv(&sc->sc_nvstid); 961 if (hvn_nvs_cmd(sc, &ccmd, sizeof(ccmd), tid, 100)) 962 return -1; 963 } 964 965 memset(&ncmd, 0, sizeof(ncmd)); 966 ncmd.nvs_type = HVN_NVS_TYPE_NDIS_INIT; 967 if (sc->sc_proto <= HVN_NVS_PROTO_VERSION_4) 968 ndisver = NDIS_VERSION_6_1; 969 else 970 ndisver = NDIS_VERSION_6_30; 971 ncmd.nvs_ndis_major = (ndisver & 0xffff0000) >> 16; 972 ncmd.nvs_ndis_minor = ndisver & 0x0000ffff; 973 974 tid = atomic_inc_uint_nv(&sc->sc_nvstid); 975 if (hvn_nvs_cmd(sc, &ncmd, sizeof(ncmd), tid, 100)) 976 return -1; 977 978 sc->sc_ndisver = ndisver; 979 980 return 0; 981 } 982 983 static void 984 hvn_nvs_intr(void *arg) 985 { 986 struct hvn_softc *sc = arg; 987 struct ifnet *ifp = SC2IFP(sc); 988 struct vmbus_chanpkt_hdr *cph; 989 const struct hvn_nvs_hdr *nvs; 990 uint64_t rid; 991 uint32_t rlen; 992 int rv; 993 bool dotx = false; 994 995 for (;;) { 996 rv = vmbus_channel_recv(sc->sc_chan, sc->sc_nvsbuf, 997 HVN_NVS_BUFSIZE, &rlen, &rid, 1); 998 if (rv != 0 || rlen == 0) { 999 if (rv != EAGAIN) 1000 device_printf(sc->sc_dev, 1001 "failed to receive an NVSP packet\n"); 1002 break; 1003 } 1004 cph = (struct vmbus_chanpkt_hdr *)sc->sc_nvsbuf; 1005 nvs = (const struct hvn_nvs_hdr *)VMBUS_CHANPKT_CONST_DATA(cph); 1006 1007 if (cph->cph_type == VMBUS_CHANPKT_TYPE_COMP) { 1008 switch (nvs->nvs_type) { 1009 case HVN_NVS_TYPE_INIT_RESP: 1010 case HVN_NVS_TYPE_RXBUF_CONNRESP: 1011 case HVN_NVS_TYPE_CHIM_CONNRESP: 1012 case HVN_NVS_TYPE_SUBCH_RESP: 1013 /* copy the response back */ 1014 memcpy(&sc->sc_nvsrsp, nvs, HVN_NVS_MSGSIZE); 1015 sc->sc_nvsdone = 1; 1016 wakeup(&sc->sc_nvsrsp); 1017 break; 1018 case HVN_NVS_TYPE_RNDIS_ACK: 1019 dotx = true; 1020 hvn_txeof(sc, cph->cph_tid); 1021 break; 1022 default: 1023 device_printf(sc->sc_dev, 1024 "unhandled NVSP packet type %u " 1025 "on completion\n", nvs->nvs_type); 1026 break; 1027 } 1028 } else if (cph->cph_type == VMBUS_CHANPKT_TYPE_RXBUF) { 1029 switch (nvs->nvs_type) { 1030 case HVN_NVS_TYPE_RNDIS: 1031 hvn_rndis_input(sc, cph->cph_tid, cph); 1032 break; 1033 default: 1034 device_printf(sc->sc_dev, 1035 "unhandled NVSP packet type %u " 1036 "on receive\n", nvs->nvs_type); 1037 break; 1038 } 1039 } else 1040 device_printf(sc->sc_dev, 1041 "unknown NVSP packet type %u\n", cph->cph_type); 1042 } 1043 1044 if (dotx) 1045 if_schedule_deferred_start(ifp); 1046 } 1047 1048 static int 1049 hvn_nvs_cmd(struct hvn_softc *sc, void *cmd, size_t cmdsize, uint64_t tid, 1050 int timo) 1051 { 1052 struct hvn_nvs_hdr *hdr = cmd; 1053 int tries = 10; 1054 int rv, s; 1055 1056 sc->sc_nvsdone = 0; 1057 1058 do { 1059 rv = vmbus_channel_send(sc->sc_chan, cmd, cmdsize, 1060 tid, VMBUS_CHANPKT_TYPE_INBAND, 1061 timo ? VMBUS_CHANPKT_FLAG_RC : 0); 1062 if (rv == EAGAIN) { 1063 if (cold) 1064 delay(1000); 1065 else 1066 tsleep(cmd, PRIBIO, "nvsout", 1); 1067 } else if (rv) { 1068 DPRINTF("%s: NVSP operation %u send error %d\n", 1069 device_xname(sc->sc_dev), hdr->nvs_type, rv); 1070 return rv; 1071 } 1072 } while (rv != 0 && --tries > 0); 1073 1074 if (tries == 0 && rv != 0) { 1075 device_printf(sc->sc_dev, 1076 "NVSP operation %u send error %d\n", hdr->nvs_type, rv); 1077 return rv; 1078 } 1079 1080 if (timo == 0) 1081 return 0; 1082 1083 do { 1084 if (cold) 1085 delay(1000); 1086 else 1087 tsleep(sc, PRIBIO | PCATCH, "nvscmd", 1); 1088 s = splnet(); 1089 hvn_nvs_intr(sc); 1090 splx(s); 1091 } while (--timo > 0 && sc->sc_nvsdone != 1); 1092 1093 if (timo == 0 && sc->sc_nvsdone != 1) { 1094 device_printf(sc->sc_dev, "NVSP operation %u timed out\n", 1095 hdr->nvs_type); 1096 return ETIMEDOUT; 1097 } 1098 return 0; 1099 } 1100 1101 static int 1102 hvn_nvs_ack(struct hvn_softc *sc, uint64_t tid) 1103 { 1104 struct hvn_nvs_rndis_ack cmd; 1105 int tries = 5; 1106 int rv; 1107 1108 cmd.nvs_type = HVN_NVS_TYPE_RNDIS_ACK; 1109 cmd.nvs_status = HVN_NVS_STATUS_OK; 1110 do { 1111 rv = vmbus_channel_send(sc->sc_chan, &cmd, sizeof(cmd), 1112 tid, VMBUS_CHANPKT_TYPE_COMP, 0); 1113 if (rv == EAGAIN) 1114 delay(10); 1115 else if (rv) { 1116 DPRINTF("%s: NVSP acknowledgement error %d\n", 1117 device_xname(sc->sc_dev), rv); 1118 return rv; 1119 } 1120 } while (rv != 0 && --tries > 0); 1121 return rv; 1122 } 1123 1124 static void 1125 hvn_nvs_detach(struct hvn_softc *sc) 1126 { 1127 1128 if (vmbus_channel_close(sc->sc_chan) == 0) { 1129 kmem_free(sc->sc_nvsbuf, HVN_NVS_BUFSIZE); 1130 sc->sc_nvsbuf = NULL; 1131 } 1132 } 1133 1134 static inline struct rndis_cmd * 1135 hvn_alloc_cmd(struct hvn_softc *sc) 1136 { 1137 struct rndis_cmd *rc; 1138 1139 mutex_enter(&sc->sc_cntl_fqlck); 1140 while ((rc = TAILQ_FIRST(&sc->sc_cntl_fq)) == NULL) 1141 /* XXX use condvar(9) instead of mtsleep */ 1142 mtsleep(&sc->sc_cntl_fq, PRIBIO, "nvsalloc", 1, 1143 &sc->sc_cntl_fqlck); 1144 TAILQ_REMOVE(&sc->sc_cntl_fq, rc, rc_entry); 1145 mutex_exit(&sc->sc_cntl_fqlck); 1146 return rc; 1147 } 1148 1149 static inline void 1150 hvn_submit_cmd(struct hvn_softc *sc, struct rndis_cmd *rc) 1151 { 1152 1153 mutex_enter(&sc->sc_cntl_sqlck); 1154 TAILQ_INSERT_TAIL(&sc->sc_cntl_sq, rc, rc_entry); 1155 mutex_exit(&sc->sc_cntl_sqlck); 1156 } 1157 1158 static inline struct rndis_cmd * 1159 hvn_complete_cmd(struct hvn_softc *sc, uint32_t id) 1160 { 1161 struct rndis_cmd *rc; 1162 1163 mutex_enter(&sc->sc_cntl_sqlck); 1164 TAILQ_FOREACH(rc, &sc->sc_cntl_sq, rc_entry) { 1165 if (rc->rc_id == id) { 1166 TAILQ_REMOVE(&sc->sc_cntl_sq, rc, rc_entry); 1167 break; 1168 } 1169 } 1170 mutex_exit(&sc->sc_cntl_sqlck); 1171 if (rc != NULL) { 1172 mutex_enter(&sc->sc_cntl_cqlck); 1173 TAILQ_INSERT_TAIL(&sc->sc_cntl_cq, rc, rc_entry); 1174 mutex_exit(&sc->sc_cntl_cqlck); 1175 } 1176 return rc; 1177 } 1178 1179 static inline void 1180 hvn_release_cmd(struct hvn_softc *sc, struct rndis_cmd *rc) 1181 { 1182 1183 mutex_enter(&sc->sc_cntl_cqlck); 1184 TAILQ_REMOVE(&sc->sc_cntl_cq, rc, rc_entry); 1185 mutex_exit(&sc->sc_cntl_cqlck); 1186 } 1187 1188 static inline int 1189 hvn_rollback_cmd(struct hvn_softc *sc, struct rndis_cmd *rc) 1190 { 1191 struct rndis_cmd *rn; 1192 1193 mutex_enter(&sc->sc_cntl_sqlck); 1194 TAILQ_FOREACH(rn, &sc->sc_cntl_sq, rc_entry) { 1195 if (rn == rc) { 1196 TAILQ_REMOVE(&sc->sc_cntl_sq, rc, rc_entry); 1197 mutex_exit(&sc->sc_cntl_sqlck); 1198 return 0; 1199 } 1200 } 1201 mutex_exit(&sc->sc_cntl_sqlck); 1202 return -1; 1203 } 1204 1205 static inline void 1206 hvn_free_cmd(struct hvn_softc *sc, struct rndis_cmd *rc) 1207 { 1208 1209 memset(rc->rc_req, 0, sizeof(struct rndis_packet_msg)); 1210 memset(&rc->rc_cmp, 0, sizeof(rc->rc_cmp)); 1211 memset(&rc->rc_msg, 0, sizeof(rc->rc_msg)); 1212 mutex_enter(&sc->sc_cntl_fqlck); 1213 TAILQ_INSERT_TAIL(&sc->sc_cntl_fq, rc, rc_entry); 1214 mutex_exit(&sc->sc_cntl_fqlck); 1215 wakeup(&sc->sc_cntl_fq); 1216 } 1217 1218 static int 1219 hvn_rndis_attach(struct hvn_softc *sc) 1220 { 1221 const int dmaflags = cold ? BUS_DMA_NOWAIT : BUS_DMA_WAITOK; 1222 struct rndis_init_req *req; 1223 struct rndis_init_comp *cmp; 1224 struct rndis_cmd *rc; 1225 int i, rv; 1226 1227 /* RNDIS control message queues */ 1228 TAILQ_INIT(&sc->sc_cntl_sq); 1229 TAILQ_INIT(&sc->sc_cntl_cq); 1230 TAILQ_INIT(&sc->sc_cntl_fq); 1231 mutex_init(&sc->sc_cntl_sqlck, MUTEX_DEFAULT, IPL_NET); 1232 mutex_init(&sc->sc_cntl_cqlck, MUTEX_DEFAULT, IPL_NET); 1233 mutex_init(&sc->sc_cntl_fqlck, MUTEX_DEFAULT, IPL_NET); 1234 1235 for (i = 0; i < HVN_RNDIS_CTLREQS; i++) { 1236 rc = &sc->sc_cntl_msgs[i]; 1237 if (bus_dmamap_create(sc->sc_dmat, PAGE_SIZE, 1, PAGE_SIZE, 0, 1238 dmaflags, &rc->rc_dmap)) { 1239 DPRINTF("%s: failed to create RNDIS command map\n", 1240 device_xname(sc->sc_dev)); 1241 goto errout; 1242 } 1243 if (bus_dmamem_alloc(sc->sc_dmat, PAGE_SIZE, PAGE_SIZE, 1244 0, &rc->rc_segs, 1, &rc->rc_nsegs, dmaflags)) { 1245 DPRINTF("%s: failed to allocate RNDIS command\n", 1246 device_xname(sc->sc_dev)); 1247 bus_dmamap_destroy(sc->sc_dmat, rc->rc_dmap); 1248 goto errout; 1249 } 1250 if (bus_dmamem_map(sc->sc_dmat, &rc->rc_segs, rc->rc_nsegs, 1251 PAGE_SIZE, (void **)&rc->rc_req, dmaflags)) { 1252 DPRINTF("%s: failed to allocate RNDIS command\n", 1253 device_xname(sc->sc_dev)); 1254 bus_dmamem_free(sc->sc_dmat, &rc->rc_segs, 1255 rc->rc_nsegs); 1256 bus_dmamap_destroy(sc->sc_dmat, rc->rc_dmap); 1257 goto errout; 1258 } 1259 memset(rc->rc_req, 0, PAGE_SIZE); 1260 if (bus_dmamap_load(sc->sc_dmat, rc->rc_dmap, rc->rc_req, 1261 PAGE_SIZE, NULL, dmaflags)) { 1262 DPRINTF("%s: failed to load RNDIS command map\n", 1263 device_xname(sc->sc_dev)); 1264 bus_dmamem_free(sc->sc_dmat, &rc->rc_segs, 1265 rc->rc_nsegs); 1266 bus_dmamap_destroy(sc->sc_dmat, rc->rc_dmap); 1267 goto errout; 1268 } 1269 rc->rc_gpa = atop(rc->rc_dmap->dm_segs[0].ds_addr); 1270 TAILQ_INSERT_TAIL(&sc->sc_cntl_fq, rc, rc_entry); 1271 } 1272 1273 rc = hvn_alloc_cmd(sc); 1274 1275 bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE, 1276 BUS_DMASYNC_PREREAD); 1277 1278 rc->rc_id = atomic_inc_uint_nv(&sc->sc_rndisrid); 1279 1280 req = rc->rc_req; 1281 req->rm_type = REMOTE_NDIS_INITIALIZE_MSG; 1282 req->rm_len = sizeof(*req); 1283 req->rm_rid = rc->rc_id; 1284 req->rm_ver_major = RNDIS_VERSION_MAJOR; 1285 req->rm_ver_minor = RNDIS_VERSION_MINOR; 1286 req->rm_max_xfersz = HVN_RNDIS_XFER_SIZE; 1287 1288 rc->rc_cmplen = sizeof(*cmp); 1289 1290 bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE, 1291 BUS_DMASYNC_PREWRITE); 1292 1293 if ((rv = hvn_rndis_cmd(sc, rc, 500)) != 0) { 1294 DPRINTF("%s: INITIALIZE_MSG failed, error %d\n", 1295 device_xname(sc->sc_dev), rv); 1296 hvn_free_cmd(sc, rc); 1297 goto errout; 1298 } 1299 cmp = (struct rndis_init_comp *)&rc->rc_cmp; 1300 if (cmp->rm_status != RNDIS_STATUS_SUCCESS) { 1301 DPRINTF("%s: failed to init RNDIS, error %#x\n", 1302 device_xname(sc->sc_dev), cmp->rm_status); 1303 hvn_free_cmd(sc, rc); 1304 goto errout; 1305 } 1306 1307 hvn_free_cmd(sc, rc); 1308 1309 /* Initialize RNDIS Data command */ 1310 memset(&sc->sc_data_msg, 0, sizeof(sc->sc_data_msg)); 1311 sc->sc_data_msg.nvs_type = HVN_NVS_TYPE_RNDIS; 1312 sc->sc_data_msg.nvs_rndis_mtype = HVN_NVS_RNDIS_MTYPE_DATA; 1313 sc->sc_data_msg.nvs_chim_idx = HVN_NVS_CHIM_IDX_INVALID; 1314 1315 return 0; 1316 1317 errout: 1318 for (i = 0; i < HVN_RNDIS_CTLREQS; i++) { 1319 rc = &sc->sc_cntl_msgs[i]; 1320 if (rc->rc_req == NULL) 1321 continue; 1322 TAILQ_REMOVE(&sc->sc_cntl_fq, rc, rc_entry); 1323 bus_dmamem_free(sc->sc_dmat, &rc->rc_segs, rc->rc_nsegs); 1324 rc->rc_req = NULL; 1325 bus_dmamap_destroy(sc->sc_dmat, rc->rc_dmap); 1326 } 1327 return -1; 1328 } 1329 1330 static int 1331 hvn_set_capabilities(struct hvn_softc *sc) 1332 { 1333 struct ndis_offload_params params; 1334 size_t len = sizeof(params); 1335 1336 memset(¶ms, 0, sizeof(params)); 1337 1338 params.ndis_hdr.ndis_type = NDIS_OBJTYPE_DEFAULT; 1339 if (sc->sc_ndisver < NDIS_VERSION_6_30) { 1340 params.ndis_hdr.ndis_rev = NDIS_OFFLOAD_PARAMS_REV_2; 1341 len = params.ndis_hdr.ndis_size = NDIS_OFFLOAD_PARAMS_SIZE_6_1; 1342 } else { 1343 params.ndis_hdr.ndis_rev = NDIS_OFFLOAD_PARAMS_REV_3; 1344 len = params.ndis_hdr.ndis_size = NDIS_OFFLOAD_PARAMS_SIZE; 1345 } 1346 1347 params.ndis_ip4csum = NDIS_OFFLOAD_PARAM_TXRX; 1348 params.ndis_tcp4csum = NDIS_OFFLOAD_PARAM_TXRX; 1349 params.ndis_tcp6csum = NDIS_OFFLOAD_PARAM_TXRX; 1350 if (sc->sc_ndisver >= NDIS_VERSION_6_30) { 1351 params.ndis_udp4csum = NDIS_OFFLOAD_PARAM_TXRX; 1352 params.ndis_udp6csum = NDIS_OFFLOAD_PARAM_TXRX; 1353 } 1354 1355 return hvn_rndis_set(sc, OID_TCP_OFFLOAD_PARAMETERS, ¶ms, len); 1356 } 1357 1358 static int 1359 hvn_rndis_cmd(struct hvn_softc *sc, struct rndis_cmd *rc, int timo) 1360 { 1361 struct hvn_nvs_rndis *msg = &rc->rc_msg; 1362 struct rndis_msghdr *hdr = rc->rc_req; 1363 struct vmbus_gpa sgl[1]; 1364 int tries = 10; 1365 int rv, s; 1366 1367 KASSERT(timo > 0); 1368 1369 msg->nvs_type = HVN_NVS_TYPE_RNDIS; 1370 msg->nvs_rndis_mtype = HVN_NVS_RNDIS_MTYPE_CTRL; 1371 msg->nvs_chim_idx = HVN_NVS_CHIM_IDX_INVALID; 1372 1373 sgl[0].gpa_page = rc->rc_gpa; 1374 sgl[0].gpa_len = hdr->rm_len; 1375 sgl[0].gpa_ofs = 0; 1376 1377 rc->rc_done = 0; 1378 1379 hvn_submit_cmd(sc, rc); 1380 1381 do { 1382 rv = vmbus_channel_send_sgl(sc->sc_chan, sgl, 1, &rc->rc_msg, 1383 sizeof(*msg), rc->rc_id); 1384 if (rv == EAGAIN) { 1385 if (cold) 1386 delay(1000); 1387 else 1388 tsleep(rc, PRIBIO, "rndisout", 1); 1389 } else if (rv) { 1390 DPRINTF("%s: RNDIS operation %u send error %d\n", 1391 device_xname(sc->sc_dev), hdr->rm_type, rv); 1392 hvn_rollback_cmd(sc, rc); 1393 return rv; 1394 } 1395 } while (rv != 0 && --tries > 0); 1396 1397 if (tries == 0 && rv != 0) { 1398 device_printf(sc->sc_dev, 1399 "RNDIS operation %u send error %d\n", hdr->rm_type, rv); 1400 return rv; 1401 } 1402 1403 bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE, 1404 BUS_DMASYNC_POSTWRITE); 1405 1406 do { 1407 if (cold) 1408 delay(1000); 1409 else 1410 tsleep(rc, PRIBIO | PCATCH, "rndiscmd", 1); 1411 s = splnet(); 1412 hvn_nvs_intr(sc); 1413 splx(s); 1414 } while (--timo > 0 && rc->rc_done != 1); 1415 1416 bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE, 1417 BUS_DMASYNC_POSTREAD); 1418 1419 if (rc->rc_done != 1) { 1420 rv = timo == 0 ? ETIMEDOUT : EINTR; 1421 if (hvn_rollback_cmd(sc, rc)) { 1422 hvn_release_cmd(sc, rc); 1423 rv = 0; 1424 } else if (rv == ETIMEDOUT) { 1425 device_printf(sc->sc_dev, 1426 "RNDIS operation %u timed out\n", hdr->rm_type); 1427 } 1428 return rv; 1429 } 1430 1431 hvn_release_cmd(sc, rc); 1432 return 0; 1433 } 1434 1435 static void 1436 hvn_rndis_input(struct hvn_softc *sc, uint64_t tid, void *arg) 1437 { 1438 struct vmbus_chanpkt_prplist *cp = arg; 1439 uint32_t off, len, type; 1440 int i; 1441 1442 if (sc->sc_rx_ring == NULL) { 1443 DPRINTF("%s: invalid rx ring\n", device_xname(sc->sc_dev)); 1444 return; 1445 } 1446 1447 for (i = 0; i < cp->cp_range_cnt; i++) { 1448 off = cp->cp_range[i].gpa_ofs; 1449 len = cp->cp_range[i].gpa_len; 1450 1451 KASSERT(off + len <= sc->sc_rx_size); 1452 KASSERT(len >= RNDIS_HEADER_OFFSET + 4); 1453 1454 memcpy(&type, sc->sc_rx_ring + off, sizeof(type)); 1455 switch (type) { 1456 /* data message */ 1457 case REMOTE_NDIS_PACKET_MSG: 1458 hvn_rxeof(sc, sc->sc_rx_ring + off, len); 1459 break; 1460 /* completion messages */ 1461 case REMOTE_NDIS_INITIALIZE_CMPLT: 1462 case REMOTE_NDIS_QUERY_CMPLT: 1463 case REMOTE_NDIS_SET_CMPLT: 1464 case REMOTE_NDIS_RESET_CMPLT: 1465 case REMOTE_NDIS_KEEPALIVE_CMPLT: 1466 hvn_rndis_complete(sc, sc->sc_rx_ring + off, len); 1467 break; 1468 /* notification message */ 1469 case REMOTE_NDIS_INDICATE_STATUS_MSG: 1470 hvn_rndis_status(sc, sc->sc_rx_ring + off, len); 1471 break; 1472 default: 1473 device_printf(sc->sc_dev, 1474 "unhandled RNDIS message type %u\n", type); 1475 break; 1476 } 1477 } 1478 1479 hvn_nvs_ack(sc, tid); 1480 } 1481 1482 static inline struct mbuf * 1483 hvn_devget(struct hvn_softc *sc, void *buf, uint32_t len) 1484 { 1485 struct ifnet *ifp = SC2IFP(sc); 1486 struct mbuf *m; 1487 size_t size = len + ETHER_ALIGN; 1488 1489 MGETHDR(m, M_NOWAIT, MT_DATA); 1490 if (m == NULL) 1491 return NULL; 1492 1493 if (size > MHLEN) { 1494 if (size <= MCLBYTES) 1495 MCLGET(m, M_NOWAIT); 1496 else 1497 MEXTMALLOC(m, size, M_NOWAIT); 1498 if ((m->m_flags & M_EXT) == 0) { 1499 m_freem(m); 1500 return NULL; 1501 } 1502 } 1503 1504 m->m_len = m->m_pkthdr.len = size; 1505 m_adj(m, ETHER_ALIGN); 1506 m_copyback(m, 0, len, buf); 1507 m_set_rcvif(m, ifp); 1508 return m; 1509 } 1510 1511 static void 1512 hvn_rxeof(struct hvn_softc *sc, uint8_t *buf, uint32_t len) 1513 { 1514 struct ifnet *ifp = SC2IFP(sc); 1515 struct rndis_packet_msg *pkt; 1516 struct rndis_pktinfo *pi; 1517 uint32_t csum, vlan; 1518 struct mbuf *m; 1519 1520 if (!(ifp->if_flags & IFF_RUNNING)) 1521 return; 1522 1523 if (len < sizeof(*pkt)) { 1524 device_printf(sc->sc_dev, "data packet too short: %u\n", 1525 len); 1526 return; 1527 } 1528 1529 pkt = (struct rndis_packet_msg *)buf; 1530 if (pkt->rm_dataoffset + pkt->rm_datalen > len) { 1531 device_printf(sc->sc_dev, 1532 "data packet out of bounds: %u@%u\n", pkt->rm_dataoffset, 1533 pkt->rm_datalen); 1534 return; 1535 } 1536 1537 if ((m = hvn_devget(sc, buf + RNDIS_HEADER_OFFSET + pkt->rm_dataoffset, 1538 pkt->rm_datalen)) == NULL) { 1539 ifp->if_ierrors++; 1540 return; 1541 } 1542 1543 if (pkt->rm_pktinfooffset + pkt->rm_pktinfolen > len) { 1544 device_printf(sc->sc_dev, 1545 "pktinfo is out of bounds: %u@%u vs %u\n", 1546 pkt->rm_pktinfolen, pkt->rm_pktinfooffset, len); 1547 goto done; 1548 } 1549 1550 pi = (struct rndis_pktinfo *)(buf + RNDIS_HEADER_OFFSET + 1551 pkt->rm_pktinfooffset); 1552 while (pkt->rm_pktinfolen > 0) { 1553 if (pi->rm_size > pkt->rm_pktinfolen) { 1554 device_printf(sc->sc_dev, 1555 "invalid pktinfo size: %u/%u\n", pi->rm_size, 1556 pkt->rm_pktinfolen); 1557 break; 1558 } 1559 1560 switch (pi->rm_type) { 1561 case NDIS_PKTINFO_TYPE_CSUM: 1562 memcpy(&csum, pi->rm_data, sizeof(csum)); 1563 if (csum & NDIS_RXCSUM_INFO_IPCS_OK) 1564 m->m_pkthdr.csum_flags |= M_CSUM_IPv4; 1565 if (csum & NDIS_RXCSUM_INFO_TCPCS_OK) 1566 m->m_pkthdr.csum_flags |= M_CSUM_TCPv4; 1567 if (csum & NDIS_RXCSUM_INFO_UDPCS_OK) 1568 m->m_pkthdr.csum_flags |= M_CSUM_UDPv4; 1569 break; 1570 case NDIS_PKTINFO_TYPE_VLAN: 1571 memcpy(&vlan, pi->rm_data, sizeof(vlan)); 1572 if (vlan != 0xffffffff) { 1573 m->m_pkthdr.ether_vtag = 1574 NDIS_VLAN_INFO_ID(vlan) | 1575 (NDIS_VLAN_INFO_PRI(vlan) << EVL_PRIO_BITS); 1576 m->m_flags |= M_VLANTAG; 1577 } 1578 break; 1579 default: 1580 DPRINTF("%s: unhandled pktinfo type %u\n", 1581 device_xname(sc->sc_dev), pi->rm_type); 1582 break; 1583 } 1584 1585 pkt->rm_pktinfolen -= pi->rm_size; 1586 pi = (struct rndis_pktinfo *)((char *)pi + pi->rm_size); 1587 } 1588 1589 done: 1590 if_percpuq_enqueue(sc->sc_ipq, m); 1591 } 1592 1593 static void 1594 hvn_rndis_complete(struct hvn_softc *sc, uint8_t *buf, uint32_t len) 1595 { 1596 struct rndis_cmd *rc; 1597 uint32_t id; 1598 1599 memcpy(&id, buf + RNDIS_HEADER_OFFSET, sizeof(id)); 1600 if ((rc = hvn_complete_cmd(sc, id)) != NULL) { 1601 if (len < rc->rc_cmplen) 1602 device_printf(sc->sc_dev, 1603 "RNDIS response %u too short: %u\n", id, len); 1604 else 1605 memcpy(&rc->rc_cmp, buf, rc->rc_cmplen); 1606 if (len > rc->rc_cmplen && 1607 len - rc->rc_cmplen > HVN_RNDIS_BUFSIZE) 1608 device_printf(sc->sc_dev, 1609 "RNDIS response %u too large: %u\n", id, len); 1610 else if (len > rc->rc_cmplen) 1611 memcpy(&rc->rc_cmpbuf, buf + rc->rc_cmplen, 1612 len - rc->rc_cmplen); 1613 rc->rc_done = 1; 1614 wakeup(rc); 1615 } else { 1616 DPRINTF("%s: failed to complete RNDIS request id %u\n", 1617 device_xname(sc->sc_dev), id); 1618 } 1619 } 1620 1621 static int 1622 hvn_rndis_output(struct hvn_softc *sc, struct hvn_tx_desc *txd) 1623 { 1624 uint64_t rid = (uint64_t)txd->txd_id << 32; 1625 int rv; 1626 1627 rv = vmbus_channel_send_sgl(sc->sc_chan, txd->txd_sgl, txd->txd_nsge, 1628 &sc->sc_data_msg, sizeof(sc->sc_data_msg), rid); 1629 if (rv) { 1630 DPRINTF("%s: RNDIS data send error %d\n", 1631 device_xname(sc->sc_dev), rv); 1632 return rv; 1633 } 1634 return 0; 1635 } 1636 1637 static void 1638 hvn_rndis_status(struct hvn_softc *sc, uint8_t *buf, uint32_t len) 1639 { 1640 struct ifnet *ifp = SC2IFP(sc); 1641 uint32_t status; 1642 int link_state = sc->sc_link_state; 1643 1644 memcpy(&status, buf + RNDIS_HEADER_OFFSET, sizeof(status)); 1645 switch (status) { 1646 case RNDIS_STATUS_MEDIA_CONNECT: 1647 sc->sc_link_state = LINK_STATE_UP; 1648 break; 1649 case RNDIS_STATUS_MEDIA_DISCONNECT: 1650 sc->sc_link_state = LINK_STATE_DOWN; 1651 break; 1652 /* Ignore these */ 1653 case RNDIS_STATUS_OFFLOAD_CURRENT_CONFIG: 1654 return; 1655 default: 1656 DPRINTF("%s: unhandled status %#x\n", device_xname(sc->sc_dev), 1657 status); 1658 return; 1659 } 1660 if (link_state != sc->sc_link_state) 1661 if_link_state_change(ifp, sc->sc_link_state); 1662 } 1663 1664 static int 1665 hvn_rndis_query(struct hvn_softc *sc, uint32_t oid, void *res, size_t *length) 1666 { 1667 struct rndis_cmd *rc; 1668 struct rndis_query_req *req; 1669 struct rndis_query_comp *cmp; 1670 size_t olength = *length; 1671 int rv; 1672 1673 rc = hvn_alloc_cmd(sc); 1674 1675 bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE, 1676 BUS_DMASYNC_PREREAD); 1677 1678 rc->rc_id = atomic_inc_uint_nv(&sc->sc_rndisrid); 1679 1680 req = rc->rc_req; 1681 req->rm_type = REMOTE_NDIS_QUERY_MSG; 1682 req->rm_len = sizeof(*req); 1683 req->rm_rid = rc->rc_id; 1684 req->rm_oid = oid; 1685 req->rm_infobufoffset = sizeof(*req) - RNDIS_HEADER_OFFSET; 1686 1687 rc->rc_cmplen = sizeof(*cmp); 1688 1689 bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE, 1690 BUS_DMASYNC_PREWRITE); 1691 1692 if ((rv = hvn_rndis_cmd(sc, rc, 500)) != 0) { 1693 DPRINTF("%s: QUERY_MSG failed, error %d\n", 1694 device_xname(sc->sc_dev), rv); 1695 hvn_free_cmd(sc, rc); 1696 return rv; 1697 } 1698 1699 cmp = (struct rndis_query_comp *)&rc->rc_cmp; 1700 switch (cmp->rm_status) { 1701 case RNDIS_STATUS_SUCCESS: 1702 if (cmp->rm_infobuflen > olength) { 1703 rv = EINVAL; 1704 break; 1705 } 1706 memcpy(res, rc->rc_cmpbuf, cmp->rm_infobuflen); 1707 *length = cmp->rm_infobuflen; 1708 break; 1709 default: 1710 *length = 0; 1711 rv = EIO; 1712 break; 1713 } 1714 1715 hvn_free_cmd(sc, rc); 1716 return rv; 1717 } 1718 1719 static int 1720 hvn_rndis_set(struct hvn_softc *sc, uint32_t oid, void *data, size_t length) 1721 { 1722 struct rndis_cmd *rc; 1723 struct rndis_set_req *req; 1724 struct rndis_set_comp *cmp; 1725 int rv; 1726 1727 rc = hvn_alloc_cmd(sc); 1728 1729 bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE, 1730 BUS_DMASYNC_PREREAD); 1731 1732 rc->rc_id = atomic_inc_uint_nv(&sc->sc_rndisrid); 1733 1734 req = rc->rc_req; 1735 req->rm_type = REMOTE_NDIS_SET_MSG; 1736 req->rm_len = sizeof(*req) + length; 1737 req->rm_rid = rc->rc_id; 1738 req->rm_oid = oid; 1739 req->rm_infobufoffset = sizeof(*req) - RNDIS_HEADER_OFFSET; 1740 1741 rc->rc_cmplen = sizeof(*cmp); 1742 1743 if (length > 0) { 1744 KASSERT(sizeof(*req) + length < PAGE_SIZE); 1745 req->rm_infobuflen = length; 1746 memcpy(req + 1, data, length); 1747 } 1748 1749 bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE, 1750 BUS_DMASYNC_PREWRITE); 1751 1752 if ((rv = hvn_rndis_cmd(sc, rc, 500)) != 0) { 1753 DPRINTF("%s: SET_MSG failed, error %d\n", 1754 device_xname(sc->sc_dev), rv); 1755 hvn_free_cmd(sc, rc); 1756 return rv; 1757 } 1758 1759 cmp = (struct rndis_set_comp *)&rc->rc_cmp; 1760 if (cmp->rm_status != RNDIS_STATUS_SUCCESS) 1761 rv = EIO; 1762 1763 hvn_free_cmd(sc, rc); 1764 return rv; 1765 } 1766 1767 static int 1768 hvn_rndis_open(struct hvn_softc *sc) 1769 { 1770 uint32_t filter; 1771 int rv; 1772 1773 if (sc->sc_promisc) 1774 filter = RNDIS_PACKET_TYPE_PROMISCUOUS; 1775 else 1776 filter = RNDIS_PACKET_TYPE_BROADCAST | 1777 RNDIS_PACKET_TYPE_ALL_MULTICAST | 1778 RNDIS_PACKET_TYPE_DIRECTED; 1779 1780 rv = hvn_rndis_set(sc, OID_GEN_CURRENT_PACKET_FILTER, 1781 &filter, sizeof(filter)); 1782 if (rv) { 1783 DPRINTF("%s: failed to set RNDIS filter to %#x\n", 1784 device_xname(sc->sc_dev), filter); 1785 } 1786 return rv; 1787 } 1788 1789 static int 1790 hvn_rndis_close(struct hvn_softc *sc) 1791 { 1792 uint32_t filter = 0; 1793 int rv; 1794 1795 rv = hvn_rndis_set(sc, OID_GEN_CURRENT_PACKET_FILTER, 1796 &filter, sizeof(filter)); 1797 if (rv) { 1798 DPRINTF("%s: failed to clear RNDIS filter\n", 1799 device_xname(sc->sc_dev)); 1800 } 1801 return rv; 1802 } 1803 1804 static void 1805 hvn_rndis_detach(struct hvn_softc *sc) 1806 { 1807 struct rndis_cmd *rc; 1808 struct rndis_halt_req *req; 1809 int rv; 1810 1811 rc = hvn_alloc_cmd(sc); 1812 1813 bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE, 1814 BUS_DMASYNC_PREREAD); 1815 1816 rc->rc_id = atomic_inc_uint_nv(&sc->sc_rndisrid); 1817 1818 req = rc->rc_req; 1819 req->rm_type = REMOTE_NDIS_HALT_MSG; 1820 req->rm_len = sizeof(*req); 1821 req->rm_rid = rc->rc_id; 1822 1823 bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE, 1824 BUS_DMASYNC_PREWRITE); 1825 1826 if ((rv = hvn_rndis_cmd(sc, rc, 500)) != 0) { 1827 DPRINTF("%s: HALT_MSG failed, error %d\n", 1828 device_xname(sc->sc_dev), rv); 1829 } 1830 hvn_free_cmd(sc, rc); 1831 } 1832
Indexes created Thu Oct 02 14:10:14 GMT 2025