if_hvn.c revision 1.4.2.4
1 /* $NetBSD: if_hvn.c,v 1.4.2.4 2019/11/25 16:58:54 martin 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 1.4.2.4 2019/11/25 16:58:54 martin 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 const int kmemflags = cold ? KM_NOSLEEP : KM_SLEEP; 912 struct hvn_nvs_init cmd; 913 struct hvn_nvs_init_resp *rsp; 914 struct hvn_nvs_ndis_init ncmd; 915 struct hvn_nvs_ndis_conf ccmd; 916 uint32_t ndisver, ringsize; 917 uint64_t tid; 918 int i; 919 920 sc->sc_nvsbuf = kmem_zalloc(HVN_NVS_BUFSIZE, kmemflags); 921 if (sc->sc_nvsbuf == NULL) { 922 DPRINTF("%s: failed to allocate channel data buffer\n", 923 device_xname(sc->sc_dev)); 924 return -1; 925 } 926 927 /* We need to be able to fit all RNDIS control and data messages */ 928 ringsize = HVN_RNDIS_CTLREQS * 929 (sizeof(struct hvn_nvs_rndis) + sizeof(struct vmbus_gpa)) + 930 HVN_TX_DESC * (sizeof(struct hvn_nvs_rndis) + 931 (HVN_TX_FRAGS + 1) * sizeof(struct vmbus_gpa)); 932 933 sc->sc_chan->ch_flags &= ~CHF_BATCHED; 934 935 /* Associate our interrupt handler with the channel */ 936 if (vmbus_channel_open(sc->sc_chan, ringsize, NULL, 0, 937 hvn_nvs_intr, sc)) { 938 DPRINTF("%s: failed to open channel\n", 939 device_xname(sc->sc_dev)); 940 kmem_free(sc->sc_nvsbuf, HVN_NVS_BUFSIZE); 941 return -1; 942 } 943 944 memset(&cmd, 0, sizeof(cmd)); 945 cmd.nvs_type = HVN_NVS_TYPE_INIT; 946 for (i = 0; i < __arraycount(protos); i++) { 947 cmd.nvs_ver_min = cmd.nvs_ver_max = protos[i]; 948 tid = atomic_inc_uint_nv(&sc->sc_nvstid); 949 if (hvn_nvs_cmd(sc, &cmd, sizeof(cmd), tid, 100)) 950 return -1; 951 952 rsp = (struct hvn_nvs_init_resp *)&sc->sc_nvsrsp; 953 if (rsp->nvs_status == HVN_NVS_STATUS_OK) { 954 sc->sc_proto = protos[i]; 955 break; 956 } 957 } 958 if (i == __arraycount(protos)) { 959 DPRINTF("%s: failed to negotiate NVSP version\n", 960 device_xname(sc->sc_dev)); 961 return -1; 962 } 963 964 if (sc->sc_proto >= HVN_NVS_PROTO_VERSION_2) { 965 memset(&ccmd, 0, sizeof(ccmd)); 966 ccmd.nvs_type = HVN_NVS_TYPE_NDIS_CONF; 967 ccmd.nvs_mtu = HVN_MAXMTU; 968 ccmd.nvs_caps = HVN_NVS_NDIS_CONF_VLAN; 969 970 tid = atomic_inc_uint_nv(&sc->sc_nvstid); 971 if (hvn_nvs_cmd(sc, &ccmd, sizeof(ccmd), tid, 100)) 972 return -1; 973 } 974 975 memset(&ncmd, 0, sizeof(ncmd)); 976 ncmd.nvs_type = HVN_NVS_TYPE_NDIS_INIT; 977 if (sc->sc_proto <= HVN_NVS_PROTO_VERSION_4) 978 ndisver = NDIS_VERSION_6_1; 979 else 980 ndisver = NDIS_VERSION_6_30; 981 ncmd.nvs_ndis_major = (ndisver & 0xffff0000) >> 16; 982 ncmd.nvs_ndis_minor = ndisver & 0x0000ffff; 983 984 tid = atomic_inc_uint_nv(&sc->sc_nvstid); 985 if (hvn_nvs_cmd(sc, &ncmd, sizeof(ncmd), tid, 100)) 986 return -1; 987 988 sc->sc_ndisver = ndisver; 989 990 return 0; 991 } 992 993 static void 994 hvn_nvs_intr(void *arg) 995 { 996 struct hvn_softc *sc = arg; 997 struct ifnet *ifp = SC2IFP(sc); 998 struct vmbus_chanpkt_hdr *cph; 999 const struct hvn_nvs_hdr *nvs; 1000 uint64_t rid; 1001 uint32_t rlen; 1002 int rv; 1003 bool dotx = false; 1004 1005 for (;;) { 1006 rv = vmbus_channel_recv(sc->sc_chan, sc->sc_nvsbuf, 1007 HVN_NVS_BUFSIZE, &rlen, &rid, 1); 1008 if (rv != 0 || rlen == 0) { 1009 if (rv != EAGAIN) 1010 device_printf(sc->sc_dev, 1011 "failed to receive an NVSP packet\n"); 1012 break; 1013 } 1014 cph = (struct vmbus_chanpkt_hdr *)sc->sc_nvsbuf; 1015 nvs = (const struct hvn_nvs_hdr *)VMBUS_CHANPKT_CONST_DATA(cph); 1016 1017 if (cph->cph_type == VMBUS_CHANPKT_TYPE_COMP) { 1018 switch (nvs->nvs_type) { 1019 case HVN_NVS_TYPE_INIT_RESP: 1020 case HVN_NVS_TYPE_RXBUF_CONNRESP: 1021 case HVN_NVS_TYPE_CHIM_CONNRESP: 1022 case HVN_NVS_TYPE_SUBCH_RESP: 1023 /* copy the response back */ 1024 memcpy(&sc->sc_nvsrsp, nvs, HVN_NVS_MSGSIZE); 1025 sc->sc_nvsdone = 1; 1026 wakeup(&sc->sc_nvsrsp); 1027 break; 1028 case HVN_NVS_TYPE_RNDIS_ACK: 1029 dotx = true; 1030 hvn_txeof(sc, cph->cph_tid); 1031 break; 1032 default: 1033 device_printf(sc->sc_dev, 1034 "unhandled NVSP packet type %u " 1035 "on completion\n", nvs->nvs_type); 1036 break; 1037 } 1038 } else if (cph->cph_type == VMBUS_CHANPKT_TYPE_RXBUF) { 1039 switch (nvs->nvs_type) { 1040 case HVN_NVS_TYPE_RNDIS: 1041 hvn_rndis_input(sc, cph->cph_tid, cph); 1042 break; 1043 default: 1044 device_printf(sc->sc_dev, 1045 "unhandled NVSP packet type %u " 1046 "on receive\n", nvs->nvs_type); 1047 break; 1048 } 1049 } else 1050 device_printf(sc->sc_dev, 1051 "unknown NVSP packet type %u\n", cph->cph_type); 1052 } 1053 1054 if (dotx) 1055 if_schedule_deferred_start(ifp); 1056 } 1057 1058 static int 1059 hvn_nvs_cmd(struct hvn_softc *sc, void *cmd, size_t cmdsize, uint64_t tid, 1060 int timo) 1061 { 1062 struct hvn_nvs_hdr *hdr = cmd; 1063 int tries = 10; 1064 int rv, s; 1065 1066 sc->sc_nvsdone = 0; 1067 1068 do { 1069 rv = vmbus_channel_send(sc->sc_chan, cmd, cmdsize, 1070 tid, VMBUS_CHANPKT_TYPE_INBAND, 1071 timo ? VMBUS_CHANPKT_FLAG_RC : 0); 1072 if (rv == EAGAIN) { 1073 if (cold) 1074 delay(1000); 1075 else 1076 tsleep(cmd, PRIBIO, "nvsout", mstohz(1)); 1077 } else if (rv) { 1078 DPRINTF("%s: NVSP operation %u send error %d\n", 1079 device_xname(sc->sc_dev), hdr->nvs_type, rv); 1080 return rv; 1081 } 1082 } while (rv != 0 && --tries > 0); 1083 1084 if (tries == 0 && rv != 0) { 1085 device_printf(sc->sc_dev, 1086 "NVSP operation %u send error %d\n", hdr->nvs_type, rv); 1087 return rv; 1088 } 1089 1090 if (timo == 0) 1091 return 0; 1092 1093 do { 1094 if (cold) { 1095 delay(1000); 1096 s = splnet(); 1097 hvn_nvs_intr(sc); 1098 splx(s); 1099 } else 1100 tsleep(sc, PRIBIO | PCATCH, "nvscmd", mstohz(1)); 1101 } while (--timo > 0 && sc->sc_nvsdone != 1); 1102 1103 if (timo == 0 && sc->sc_nvsdone != 1) { 1104 device_printf(sc->sc_dev, "NVSP operation %u timed out\n", 1105 hdr->nvs_type); 1106 return ETIMEDOUT; 1107 } 1108 return 0; 1109 } 1110 1111 static int 1112 hvn_nvs_ack(struct hvn_softc *sc, uint64_t tid) 1113 { 1114 struct hvn_nvs_rndis_ack cmd; 1115 int tries = 5; 1116 int rv; 1117 1118 cmd.nvs_type = HVN_NVS_TYPE_RNDIS_ACK; 1119 cmd.nvs_status = HVN_NVS_STATUS_OK; 1120 do { 1121 rv = vmbus_channel_send(sc->sc_chan, &cmd, sizeof(cmd), 1122 tid, VMBUS_CHANPKT_TYPE_COMP, 0); 1123 if (rv == EAGAIN) 1124 delay(10); 1125 else if (rv) { 1126 DPRINTF("%s: NVSP acknowledgement error %d\n", 1127 device_xname(sc->sc_dev), rv); 1128 return rv; 1129 } 1130 } while (rv != 0 && --tries > 0); 1131 return rv; 1132 } 1133 1134 static void 1135 hvn_nvs_detach(struct hvn_softc *sc) 1136 { 1137 1138 if (vmbus_channel_close(sc->sc_chan) == 0) { 1139 kmem_free(sc->sc_nvsbuf, HVN_NVS_BUFSIZE); 1140 sc->sc_nvsbuf = NULL; 1141 } 1142 } 1143 1144 static inline struct rndis_cmd * 1145 hvn_alloc_cmd(struct hvn_softc *sc) 1146 { 1147 struct rndis_cmd *rc; 1148 1149 mutex_enter(&sc->sc_cntl_fqlck); 1150 while ((rc = TAILQ_FIRST(&sc->sc_cntl_fq)) == NULL) 1151 /* XXX use condvar(9) instead of mtsleep */ 1152 mtsleep(&sc->sc_cntl_fq, PRIBIO, "nvsalloc", 1, 1153 &sc->sc_cntl_fqlck); 1154 TAILQ_REMOVE(&sc->sc_cntl_fq, rc, rc_entry); 1155 mutex_exit(&sc->sc_cntl_fqlck); 1156 return rc; 1157 } 1158 1159 static inline void 1160 hvn_submit_cmd(struct hvn_softc *sc, struct rndis_cmd *rc) 1161 { 1162 1163 mutex_enter(&sc->sc_cntl_sqlck); 1164 TAILQ_INSERT_TAIL(&sc->sc_cntl_sq, rc, rc_entry); 1165 mutex_exit(&sc->sc_cntl_sqlck); 1166 } 1167 1168 static inline struct rndis_cmd * 1169 hvn_complete_cmd(struct hvn_softc *sc, uint32_t id) 1170 { 1171 struct rndis_cmd *rc; 1172 1173 mutex_enter(&sc->sc_cntl_sqlck); 1174 TAILQ_FOREACH(rc, &sc->sc_cntl_sq, rc_entry) { 1175 if (rc->rc_id == id) { 1176 TAILQ_REMOVE(&sc->sc_cntl_sq, rc, rc_entry); 1177 break; 1178 } 1179 } 1180 mutex_exit(&sc->sc_cntl_sqlck); 1181 if (rc != NULL) { 1182 mutex_enter(&sc->sc_cntl_cqlck); 1183 TAILQ_INSERT_TAIL(&sc->sc_cntl_cq, rc, rc_entry); 1184 mutex_exit(&sc->sc_cntl_cqlck); 1185 } 1186 return rc; 1187 } 1188 1189 static inline void 1190 hvn_release_cmd(struct hvn_softc *sc, struct rndis_cmd *rc) 1191 { 1192 1193 mutex_enter(&sc->sc_cntl_cqlck); 1194 TAILQ_REMOVE(&sc->sc_cntl_cq, rc, rc_entry); 1195 mutex_exit(&sc->sc_cntl_cqlck); 1196 } 1197 1198 static inline int 1199 hvn_rollback_cmd(struct hvn_softc *sc, struct rndis_cmd *rc) 1200 { 1201 struct rndis_cmd *rn; 1202 1203 mutex_enter(&sc->sc_cntl_sqlck); 1204 TAILQ_FOREACH(rn, &sc->sc_cntl_sq, rc_entry) { 1205 if (rn == rc) { 1206 TAILQ_REMOVE(&sc->sc_cntl_sq, rc, rc_entry); 1207 mutex_exit(&sc->sc_cntl_sqlck); 1208 return 0; 1209 } 1210 } 1211 mutex_exit(&sc->sc_cntl_sqlck); 1212 return -1; 1213 } 1214 1215 static inline void 1216 hvn_free_cmd(struct hvn_softc *sc, struct rndis_cmd *rc) 1217 { 1218 1219 memset(rc->rc_req, 0, sizeof(struct rndis_packet_msg)); 1220 memset(&rc->rc_cmp, 0, sizeof(rc->rc_cmp)); 1221 memset(&rc->rc_msg, 0, sizeof(rc->rc_msg)); 1222 mutex_enter(&sc->sc_cntl_fqlck); 1223 TAILQ_INSERT_TAIL(&sc->sc_cntl_fq, rc, rc_entry); 1224 mutex_exit(&sc->sc_cntl_fqlck); 1225 wakeup(&sc->sc_cntl_fq); 1226 } 1227 1228 static int 1229 hvn_rndis_attach(struct hvn_softc *sc) 1230 { 1231 const int dmaflags = cold ? BUS_DMA_NOWAIT : BUS_DMA_WAITOK; 1232 struct rndis_init_req *req; 1233 struct rndis_init_comp *cmp; 1234 struct rndis_cmd *rc; 1235 int i, rv; 1236 1237 /* RNDIS control message queues */ 1238 TAILQ_INIT(&sc->sc_cntl_sq); 1239 TAILQ_INIT(&sc->sc_cntl_cq); 1240 TAILQ_INIT(&sc->sc_cntl_fq); 1241 mutex_init(&sc->sc_cntl_sqlck, MUTEX_DEFAULT, IPL_NET); 1242 mutex_init(&sc->sc_cntl_cqlck, MUTEX_DEFAULT, IPL_NET); 1243 mutex_init(&sc->sc_cntl_fqlck, MUTEX_DEFAULT, IPL_NET); 1244 1245 for (i = 0; i < HVN_RNDIS_CTLREQS; i++) { 1246 rc = &sc->sc_cntl_msgs[i]; 1247 if (bus_dmamap_create(sc->sc_dmat, PAGE_SIZE, 1, PAGE_SIZE, 0, 1248 dmaflags, &rc->rc_dmap)) { 1249 DPRINTF("%s: failed to create RNDIS command map\n", 1250 device_xname(sc->sc_dev)); 1251 goto errout; 1252 } 1253 if (bus_dmamem_alloc(sc->sc_dmat, PAGE_SIZE, PAGE_SIZE, 1254 0, &rc->rc_segs, 1, &rc->rc_nsegs, dmaflags)) { 1255 DPRINTF("%s: failed to allocate RNDIS command\n", 1256 device_xname(sc->sc_dev)); 1257 bus_dmamap_destroy(sc->sc_dmat, rc->rc_dmap); 1258 goto errout; 1259 } 1260 if (bus_dmamem_map(sc->sc_dmat, &rc->rc_segs, rc->rc_nsegs, 1261 PAGE_SIZE, (void **)&rc->rc_req, dmaflags)) { 1262 DPRINTF("%s: failed to allocate RNDIS command\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 memset(rc->rc_req, 0, PAGE_SIZE); 1270 if (bus_dmamap_load(sc->sc_dmat, rc->rc_dmap, rc->rc_req, 1271 PAGE_SIZE, NULL, dmaflags)) { 1272 DPRINTF("%s: failed to load RNDIS command map\n", 1273 device_xname(sc->sc_dev)); 1274 bus_dmamem_free(sc->sc_dmat, &rc->rc_segs, 1275 rc->rc_nsegs); 1276 bus_dmamap_destroy(sc->sc_dmat, rc->rc_dmap); 1277 goto errout; 1278 } 1279 rc->rc_gpa = atop(rc->rc_dmap->dm_segs[0].ds_addr); 1280 TAILQ_INSERT_TAIL(&sc->sc_cntl_fq, rc, rc_entry); 1281 } 1282 1283 rc = hvn_alloc_cmd(sc); 1284 1285 bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE, 1286 BUS_DMASYNC_PREREAD); 1287 1288 rc->rc_id = atomic_inc_uint_nv(&sc->sc_rndisrid); 1289 1290 req = rc->rc_req; 1291 req->rm_type = REMOTE_NDIS_INITIALIZE_MSG; 1292 req->rm_len = sizeof(*req); 1293 req->rm_rid = rc->rc_id; 1294 req->rm_ver_major = RNDIS_VERSION_MAJOR; 1295 req->rm_ver_minor = RNDIS_VERSION_MINOR; 1296 req->rm_max_xfersz = HVN_RNDIS_XFER_SIZE; 1297 1298 rc->rc_cmplen = sizeof(*cmp); 1299 1300 bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE, 1301 BUS_DMASYNC_PREWRITE); 1302 1303 if ((rv = hvn_rndis_cmd(sc, rc, 500)) != 0) { 1304 DPRINTF("%s: INITIALIZE_MSG failed, error %d\n", 1305 device_xname(sc->sc_dev), rv); 1306 hvn_free_cmd(sc, rc); 1307 goto errout; 1308 } 1309 cmp = (struct rndis_init_comp *)&rc->rc_cmp; 1310 if (cmp->rm_status != RNDIS_STATUS_SUCCESS) { 1311 DPRINTF("%s: failed to init RNDIS, error %#x\n", 1312 device_xname(sc->sc_dev), cmp->rm_status); 1313 hvn_free_cmd(sc, rc); 1314 goto errout; 1315 } 1316 1317 hvn_free_cmd(sc, rc); 1318 1319 /* Initialize RNDIS Data command */ 1320 memset(&sc->sc_data_msg, 0, sizeof(sc->sc_data_msg)); 1321 sc->sc_data_msg.nvs_type = HVN_NVS_TYPE_RNDIS; 1322 sc->sc_data_msg.nvs_rndis_mtype = HVN_NVS_RNDIS_MTYPE_DATA; 1323 sc->sc_data_msg.nvs_chim_idx = HVN_NVS_CHIM_IDX_INVALID; 1324 1325 return 0; 1326 1327 errout: 1328 for (i = 0; i < HVN_RNDIS_CTLREQS; i++) { 1329 rc = &sc->sc_cntl_msgs[i]; 1330 if (rc->rc_req == NULL) 1331 continue; 1332 TAILQ_REMOVE(&sc->sc_cntl_fq, rc, rc_entry); 1333 bus_dmamem_free(sc->sc_dmat, &rc->rc_segs, rc->rc_nsegs); 1334 rc->rc_req = NULL; 1335 bus_dmamap_destroy(sc->sc_dmat, rc->rc_dmap); 1336 } 1337 return -1; 1338 } 1339 1340 static int 1341 hvn_set_capabilities(struct hvn_softc *sc) 1342 { 1343 struct ndis_offload_params params; 1344 size_t len = sizeof(params); 1345 1346 memset(¶ms, 0, sizeof(params)); 1347 1348 params.ndis_hdr.ndis_type = NDIS_OBJTYPE_DEFAULT; 1349 if (sc->sc_ndisver < NDIS_VERSION_6_30) { 1350 params.ndis_hdr.ndis_rev = NDIS_OFFLOAD_PARAMS_REV_2; 1351 len = params.ndis_hdr.ndis_size = NDIS_OFFLOAD_PARAMS_SIZE_6_1; 1352 } else { 1353 params.ndis_hdr.ndis_rev = NDIS_OFFLOAD_PARAMS_REV_3; 1354 len = params.ndis_hdr.ndis_size = NDIS_OFFLOAD_PARAMS_SIZE; 1355 } 1356 1357 params.ndis_ip4csum = NDIS_OFFLOAD_PARAM_TXRX; 1358 params.ndis_tcp4csum = NDIS_OFFLOAD_PARAM_TXRX; 1359 params.ndis_tcp6csum = NDIS_OFFLOAD_PARAM_TXRX; 1360 if (sc->sc_ndisver >= NDIS_VERSION_6_30) { 1361 params.ndis_udp4csum = NDIS_OFFLOAD_PARAM_TXRX; 1362 params.ndis_udp6csum = NDIS_OFFLOAD_PARAM_TXRX; 1363 } 1364 1365 return hvn_rndis_set(sc, OID_TCP_OFFLOAD_PARAMETERS, ¶ms, len); 1366 } 1367 1368 static int 1369 hvn_rndis_cmd(struct hvn_softc *sc, struct rndis_cmd *rc, int timo) 1370 { 1371 struct hvn_nvs_rndis *msg = &rc->rc_msg; 1372 struct rndis_msghdr *hdr = rc->rc_req; 1373 struct vmbus_gpa sgl[1]; 1374 int tries = 10; 1375 int rv, s; 1376 1377 KASSERT(timo > 0); 1378 1379 msg->nvs_type = HVN_NVS_TYPE_RNDIS; 1380 msg->nvs_rndis_mtype = HVN_NVS_RNDIS_MTYPE_CTRL; 1381 msg->nvs_chim_idx = HVN_NVS_CHIM_IDX_INVALID; 1382 1383 sgl[0].gpa_page = rc->rc_gpa; 1384 sgl[0].gpa_len = hdr->rm_len; 1385 sgl[0].gpa_ofs = 0; 1386 1387 rc->rc_done = 0; 1388 1389 hvn_submit_cmd(sc, rc); 1390 1391 do { 1392 rv = vmbus_channel_send_sgl(sc->sc_chan, sgl, 1, &rc->rc_msg, 1393 sizeof(*msg), rc->rc_id); 1394 if (rv == EAGAIN) { 1395 if (cold) 1396 delay(1000); 1397 else 1398 tsleep(rc, PRIBIO, "rndisout", mstohz(1)); 1399 } else if (rv) { 1400 DPRINTF("%s: RNDIS operation %u send error %d\n", 1401 device_xname(sc->sc_dev), hdr->rm_type, rv); 1402 hvn_rollback_cmd(sc, rc); 1403 return rv; 1404 } 1405 } while (rv != 0 && --tries > 0); 1406 1407 if (tries == 0 && rv != 0) { 1408 device_printf(sc->sc_dev, 1409 "RNDIS operation %u send error %d\n", hdr->rm_type, rv); 1410 return rv; 1411 } 1412 1413 bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE, 1414 BUS_DMASYNC_POSTWRITE); 1415 1416 do { 1417 if (cold) { 1418 delay(1000); 1419 s = splnet(); 1420 hvn_nvs_intr(sc); 1421 splx(s); 1422 } else 1423 tsleep(rc, PRIBIO | PCATCH, "rndiscmd", mstohz(1)); 1424 } while (--timo > 0 && rc->rc_done != 1); 1425 1426 bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE, 1427 BUS_DMASYNC_POSTREAD); 1428 1429 if (rc->rc_done != 1) { 1430 rv = timo == 0 ? ETIMEDOUT : EINTR; 1431 if (hvn_rollback_cmd(sc, rc)) { 1432 hvn_release_cmd(sc, rc); 1433 rv = 0; 1434 } else if (rv == ETIMEDOUT) { 1435 device_printf(sc->sc_dev, 1436 "RNDIS operation %u timed out\n", hdr->rm_type); 1437 } 1438 return rv; 1439 } 1440 1441 hvn_release_cmd(sc, rc); 1442 return 0; 1443 } 1444 1445 static void 1446 hvn_rndis_input(struct hvn_softc *sc, uint64_t tid, void *arg) 1447 { 1448 struct vmbus_chanpkt_prplist *cp = arg; 1449 uint32_t off, len, type; 1450 int i; 1451 1452 if (sc->sc_rx_ring == NULL) { 1453 DPRINTF("%s: invalid rx ring\n", device_xname(sc->sc_dev)); 1454 return; 1455 } 1456 1457 for (i = 0; i < cp->cp_range_cnt; i++) { 1458 off = cp->cp_range[i].gpa_ofs; 1459 len = cp->cp_range[i].gpa_len; 1460 1461 KASSERT(off + len <= sc->sc_rx_size); 1462 KASSERT(len >= RNDIS_HEADER_OFFSET + 4); 1463 1464 memcpy(&type, sc->sc_rx_ring + off, sizeof(type)); 1465 switch (type) { 1466 /* data message */ 1467 case REMOTE_NDIS_PACKET_MSG: 1468 hvn_rxeof(sc, sc->sc_rx_ring + off, len); 1469 break; 1470 /* completion messages */ 1471 case REMOTE_NDIS_INITIALIZE_CMPLT: 1472 case REMOTE_NDIS_QUERY_CMPLT: 1473 case REMOTE_NDIS_SET_CMPLT: 1474 case REMOTE_NDIS_RESET_CMPLT: 1475 case REMOTE_NDIS_KEEPALIVE_CMPLT: 1476 hvn_rndis_complete(sc, sc->sc_rx_ring + off, len); 1477 break; 1478 /* notification message */ 1479 case REMOTE_NDIS_INDICATE_STATUS_MSG: 1480 hvn_rndis_status(sc, sc->sc_rx_ring + off, len); 1481 break; 1482 default: 1483 device_printf(sc->sc_dev, 1484 "unhandled RNDIS message type %u\n", type); 1485 break; 1486 } 1487 } 1488 1489 hvn_nvs_ack(sc, tid); 1490 } 1491 1492 static inline struct mbuf * 1493 hvn_devget(struct hvn_softc *sc, void *buf, uint32_t len) 1494 { 1495 struct ifnet *ifp = SC2IFP(sc); 1496 struct mbuf *m; 1497 size_t size = len + ETHER_ALIGN; 1498 1499 MGETHDR(m, M_NOWAIT, MT_DATA); 1500 if (m == NULL) 1501 return NULL; 1502 1503 if (size > MHLEN) { 1504 if (size <= MCLBYTES) 1505 MCLGET(m, M_NOWAIT); 1506 else 1507 MEXTMALLOC(m, size, M_NOWAIT); 1508 if ((m->m_flags & M_EXT) == 0) { 1509 m_freem(m); 1510 return NULL; 1511 } 1512 } 1513 1514 m->m_len = m->m_pkthdr.len = size; 1515 m_adj(m, ETHER_ALIGN); 1516 m_copyback(m, 0, len, buf); 1517 m_set_rcvif(m, ifp); 1518 return m; 1519 } 1520 1521 static void 1522 hvn_rxeof(struct hvn_softc *sc, uint8_t *buf, uint32_t len) 1523 { 1524 struct ifnet *ifp = SC2IFP(sc); 1525 struct rndis_packet_msg *pkt; 1526 struct rndis_pktinfo *pi; 1527 uint32_t csum, vlan; 1528 struct mbuf *m; 1529 1530 if (!(ifp->if_flags & IFF_RUNNING)) 1531 return; 1532 1533 if (len < sizeof(*pkt)) { 1534 device_printf(sc->sc_dev, "data packet too short: %u\n", 1535 len); 1536 return; 1537 } 1538 1539 pkt = (struct rndis_packet_msg *)buf; 1540 if (pkt->rm_dataoffset + pkt->rm_datalen > len) { 1541 device_printf(sc->sc_dev, 1542 "data packet out of bounds: %u@%u\n", pkt->rm_dataoffset, 1543 pkt->rm_datalen); 1544 return; 1545 } 1546 1547 if ((m = hvn_devget(sc, buf + RNDIS_HEADER_OFFSET + pkt->rm_dataoffset, 1548 pkt->rm_datalen)) == NULL) { 1549 ifp->if_ierrors++; 1550 return; 1551 } 1552 1553 if (pkt->rm_pktinfooffset + pkt->rm_pktinfolen > len) { 1554 device_printf(sc->sc_dev, 1555 "pktinfo is out of bounds: %u@%u vs %u\n", 1556 pkt->rm_pktinfolen, pkt->rm_pktinfooffset, len); 1557 goto done; 1558 } 1559 1560 pi = (struct rndis_pktinfo *)(buf + RNDIS_HEADER_OFFSET + 1561 pkt->rm_pktinfooffset); 1562 while (pkt->rm_pktinfolen > 0) { 1563 if (pi->rm_size > pkt->rm_pktinfolen) { 1564 device_printf(sc->sc_dev, 1565 "invalid pktinfo size: %u/%u\n", pi->rm_size, 1566 pkt->rm_pktinfolen); 1567 break; 1568 } 1569 1570 switch (pi->rm_type) { 1571 case NDIS_PKTINFO_TYPE_CSUM: 1572 memcpy(&csum, pi->rm_data, sizeof(csum)); 1573 if (csum & NDIS_RXCSUM_INFO_IPCS_OK) 1574 m->m_pkthdr.csum_flags |= M_CSUM_IPv4; 1575 if (csum & NDIS_RXCSUM_INFO_TCPCS_OK) 1576 m->m_pkthdr.csum_flags |= M_CSUM_TCPv4; 1577 if (csum & NDIS_RXCSUM_INFO_UDPCS_OK) 1578 m->m_pkthdr.csum_flags |= M_CSUM_UDPv4; 1579 break; 1580 case NDIS_PKTINFO_TYPE_VLAN: 1581 memcpy(&vlan, pi->rm_data, sizeof(vlan)); 1582 if (vlan != 0xffffffff) { 1583 m->m_pkthdr.ether_vtag = 1584 NDIS_VLAN_INFO_ID(vlan) | 1585 (NDIS_VLAN_INFO_PRI(vlan) << EVL_PRIO_BITS); 1586 m->m_flags |= M_VLANTAG; 1587 } 1588 break; 1589 default: 1590 DPRINTF("%s: unhandled pktinfo type %u\n", 1591 device_xname(sc->sc_dev), pi->rm_type); 1592 break; 1593 } 1594 1595 pkt->rm_pktinfolen -= pi->rm_size; 1596 pi = (struct rndis_pktinfo *)((char *)pi + pi->rm_size); 1597 } 1598 1599 done: 1600 if_percpuq_enqueue(sc->sc_ipq, m); 1601 } 1602 1603 static void 1604 hvn_rndis_complete(struct hvn_softc *sc, uint8_t *buf, uint32_t len) 1605 { 1606 struct rndis_cmd *rc; 1607 uint32_t id; 1608 1609 memcpy(&id, buf + RNDIS_HEADER_OFFSET, sizeof(id)); 1610 if ((rc = hvn_complete_cmd(sc, id)) != NULL) { 1611 if (len < rc->rc_cmplen) 1612 device_printf(sc->sc_dev, 1613 "RNDIS response %u too short: %u\n", id, len); 1614 else 1615 memcpy(&rc->rc_cmp, buf, rc->rc_cmplen); 1616 if (len > rc->rc_cmplen && 1617 len - rc->rc_cmplen > HVN_RNDIS_BUFSIZE) 1618 device_printf(sc->sc_dev, 1619 "RNDIS response %u too large: %u\n", id, len); 1620 else if (len > rc->rc_cmplen) 1621 memcpy(&rc->rc_cmpbuf, buf + rc->rc_cmplen, 1622 len - rc->rc_cmplen); 1623 rc->rc_done = 1; 1624 wakeup(rc); 1625 } else { 1626 DPRINTF("%s: failed to complete RNDIS request id %u\n", 1627 device_xname(sc->sc_dev), id); 1628 } 1629 } 1630 1631 static int 1632 hvn_rndis_output(struct hvn_softc *sc, struct hvn_tx_desc *txd) 1633 { 1634 uint64_t rid = (uint64_t)txd->txd_id << 32; 1635 int rv; 1636 1637 rv = vmbus_channel_send_sgl(sc->sc_chan, txd->txd_sgl, txd->txd_nsge, 1638 &sc->sc_data_msg, sizeof(sc->sc_data_msg), rid); 1639 if (rv) { 1640 DPRINTF("%s: RNDIS data send error %d\n", 1641 device_xname(sc->sc_dev), rv); 1642 return rv; 1643 } 1644 return 0; 1645 } 1646 1647 static void 1648 hvn_rndis_status(struct hvn_softc *sc, uint8_t *buf, uint32_t len) 1649 { 1650 struct ifnet *ifp = SC2IFP(sc); 1651 uint32_t status; 1652 int link_state = sc->sc_link_state; 1653 1654 memcpy(&status, buf + RNDIS_HEADER_OFFSET, sizeof(status)); 1655 switch (status) { 1656 case RNDIS_STATUS_MEDIA_CONNECT: 1657 sc->sc_link_state = LINK_STATE_UP; 1658 break; 1659 case RNDIS_STATUS_MEDIA_DISCONNECT: 1660 sc->sc_link_state = LINK_STATE_DOWN; 1661 break; 1662 /* Ignore these */ 1663 case RNDIS_STATUS_OFFLOAD_CURRENT_CONFIG: 1664 return; 1665 default: 1666 DPRINTF("%s: unhandled status %#x\n", device_xname(sc->sc_dev), 1667 status); 1668 return; 1669 } 1670 if (link_state != sc->sc_link_state) 1671 if_link_state_change(ifp, sc->sc_link_state); 1672 } 1673 1674 static int 1675 hvn_rndis_query(struct hvn_softc *sc, uint32_t oid, void *res, size_t *length) 1676 { 1677 struct rndis_cmd *rc; 1678 struct rndis_query_req *req; 1679 struct rndis_query_comp *cmp; 1680 size_t olength = *length; 1681 int rv; 1682 1683 rc = hvn_alloc_cmd(sc); 1684 1685 bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE, 1686 BUS_DMASYNC_PREREAD); 1687 1688 rc->rc_id = atomic_inc_uint_nv(&sc->sc_rndisrid); 1689 1690 req = rc->rc_req; 1691 req->rm_type = REMOTE_NDIS_QUERY_MSG; 1692 req->rm_len = sizeof(*req); 1693 req->rm_rid = rc->rc_id; 1694 req->rm_oid = oid; 1695 req->rm_infobufoffset = sizeof(*req) - RNDIS_HEADER_OFFSET; 1696 1697 rc->rc_cmplen = sizeof(*cmp); 1698 1699 bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE, 1700 BUS_DMASYNC_PREWRITE); 1701 1702 if ((rv = hvn_rndis_cmd(sc, rc, 500)) != 0) { 1703 DPRINTF("%s: QUERY_MSG failed, error %d\n", 1704 device_xname(sc->sc_dev), rv); 1705 hvn_free_cmd(sc, rc); 1706 return rv; 1707 } 1708 1709 cmp = (struct rndis_query_comp *)&rc->rc_cmp; 1710 switch (cmp->rm_status) { 1711 case RNDIS_STATUS_SUCCESS: 1712 if (cmp->rm_infobuflen > olength) { 1713 rv = EINVAL; 1714 break; 1715 } 1716 memcpy(res, rc->rc_cmpbuf, cmp->rm_infobuflen); 1717 *length = cmp->rm_infobuflen; 1718 break; 1719 default: 1720 *length = 0; 1721 rv = EIO; 1722 break; 1723 } 1724 1725 hvn_free_cmd(sc, rc); 1726 return rv; 1727 } 1728 1729 static int 1730 hvn_rndis_set(struct hvn_softc *sc, uint32_t oid, void *data, size_t length) 1731 { 1732 struct rndis_cmd *rc; 1733 struct rndis_set_req *req; 1734 struct rndis_set_comp *cmp; 1735 int rv; 1736 1737 rc = hvn_alloc_cmd(sc); 1738 1739 bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE, 1740 BUS_DMASYNC_PREREAD); 1741 1742 rc->rc_id = atomic_inc_uint_nv(&sc->sc_rndisrid); 1743 1744 req = rc->rc_req; 1745 req->rm_type = REMOTE_NDIS_SET_MSG; 1746 req->rm_len = sizeof(*req) + length; 1747 req->rm_rid = rc->rc_id; 1748 req->rm_oid = oid; 1749 req->rm_infobufoffset = sizeof(*req) - RNDIS_HEADER_OFFSET; 1750 1751 rc->rc_cmplen = sizeof(*cmp); 1752 1753 if (length > 0) { 1754 KASSERT(sizeof(*req) + length < PAGE_SIZE); 1755 req->rm_infobuflen = length; 1756 memcpy(req + 1, data, length); 1757 } 1758 1759 bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE, 1760 BUS_DMASYNC_PREWRITE); 1761 1762 if ((rv = hvn_rndis_cmd(sc, rc, 500)) != 0) { 1763 DPRINTF("%s: SET_MSG failed, error %d\n", 1764 device_xname(sc->sc_dev), rv); 1765 hvn_free_cmd(sc, rc); 1766 return rv; 1767 } 1768 1769 cmp = (struct rndis_set_comp *)&rc->rc_cmp; 1770 if (cmp->rm_status != RNDIS_STATUS_SUCCESS) 1771 rv = EIO; 1772 1773 hvn_free_cmd(sc, rc); 1774 return rv; 1775 } 1776 1777 static int 1778 hvn_rndis_open(struct hvn_softc *sc) 1779 { 1780 uint32_t filter; 1781 int rv; 1782 1783 if (sc->sc_promisc) 1784 filter = RNDIS_PACKET_TYPE_PROMISCUOUS; 1785 else 1786 filter = RNDIS_PACKET_TYPE_BROADCAST | 1787 RNDIS_PACKET_TYPE_ALL_MULTICAST | 1788 RNDIS_PACKET_TYPE_DIRECTED; 1789 1790 rv = hvn_rndis_set(sc, OID_GEN_CURRENT_PACKET_FILTER, 1791 &filter, sizeof(filter)); 1792 if (rv) { 1793 DPRINTF("%s: failed to set RNDIS filter to %#x\n", 1794 device_xname(sc->sc_dev), filter); 1795 } 1796 return rv; 1797 } 1798 1799 static int 1800 hvn_rndis_close(struct hvn_softc *sc) 1801 { 1802 uint32_t filter = 0; 1803 int rv; 1804 1805 rv = hvn_rndis_set(sc, OID_GEN_CURRENT_PACKET_FILTER, 1806 &filter, sizeof(filter)); 1807 if (rv) { 1808 DPRINTF("%s: failed to clear RNDIS filter\n", 1809 device_xname(sc->sc_dev)); 1810 } 1811 return rv; 1812 } 1813 1814 static void 1815 hvn_rndis_detach(struct hvn_softc *sc) 1816 { 1817 struct rndis_cmd *rc; 1818 struct rndis_halt_req *req; 1819 int rv; 1820 1821 rc = hvn_alloc_cmd(sc); 1822 1823 bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE, 1824 BUS_DMASYNC_PREREAD); 1825 1826 rc->rc_id = atomic_inc_uint_nv(&sc->sc_rndisrid); 1827 1828 req = rc->rc_req; 1829 req->rm_type = REMOTE_NDIS_HALT_MSG; 1830 req->rm_len = sizeof(*req); 1831 req->rm_rid = rc->rc_id; 1832 1833 bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE, 1834 BUS_DMASYNC_PREWRITE); 1835 1836 if ((rv = hvn_rndis_cmd(sc, rc, 500)) != 0) { 1837 DPRINTF("%s: HALT_MSG failed, error %d\n", 1838 device_xname(sc->sc_dev), rv); 1839 } 1840 hvn_free_cmd(sc, rc); 1841 } 1842
Indexes created Thu Oct 02 14:10:14 GMT 2025