if_hvn.c revision 1.4.2.6
1 /* $NetBSD: if_hvn.c,v 1.4.2.6 2020/12/11 15:43:16 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 1.4.2.6 2020/12/11 15:43:16 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 error = ether_ioctl(ifp, command, data); 380 if (error == ENETRESET) { 381 if (ifp->if_flags & IFF_RUNNING) 382 hvn_iff(sc); 383 error = 0; 384 } 385 386 splx(s); 387 388 return error; 389 } 390 391 static int 392 hvn_media_change(struct ifnet *ifp) 393 { 394 395 return 0; 396 } 397 398 static void 399 hvn_media_status(struct ifnet *ifp, struct ifmediareq *ifmr) 400 { 401 struct hvn_softc *sc = IFP2SC(ifp); 402 int link_state; 403 404 link_state = sc->sc_link_state; 405 hvn_get_link_status(sc); 406 if (link_state != sc->sc_link_state) 407 if_link_state_change(ifp, sc->sc_link_state); 408 409 ifmr->ifm_status = IFM_AVALID; 410 ifmr->ifm_active = IFM_ETHER | IFM_MANUAL; 411 if (sc->sc_link_state == LINK_STATE_UP) 412 ifmr->ifm_status |= IFM_ACTIVE; 413 } 414 415 static int 416 hvn_iff(struct hvn_softc *sc) 417 { 418 419 /* XXX */ 420 sc->sc_promisc = 0; 421 422 return 0; 423 } 424 425 static int 426 hvn_init(struct ifnet *ifp) 427 { 428 struct hvn_softc *sc = IFP2SC(ifp); 429 int error; 430 431 hvn_stop(ifp, 0); 432 433 error = hvn_iff(sc); 434 if (error) 435 return error; 436 437 error = hvn_rndis_open(sc); 438 if (error == 0) { 439 ifp->if_flags |= IFF_RUNNING; 440 ifp->if_flags &= ~IFF_OACTIVE; 441 } 442 return error; 443 } 444 445 static void 446 hvn_stop(struct ifnet *ifp, int disable) 447 { 448 struct hvn_softc *sc = IFP2SC(ifp); 449 450 hvn_rndis_close(sc); 451 452 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 453 } 454 455 static void 456 hvn_start(struct ifnet *ifp) 457 { 458 struct hvn_softc *sc = IFP2SC(ifp); 459 struct hvn_tx_desc *txd; 460 struct mbuf *m; 461 462 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 463 return; 464 465 for (;;) { 466 if (!sc->sc_tx_avail) { 467 /* transient */ 468 ifp->if_flags |= IFF_OACTIVE; 469 break; 470 } 471 472 IFQ_DEQUEUE(&ifp->if_snd, m); 473 if (m == NULL) 474 break; 475 476 if (hvn_encap(sc, m, &txd)) { 477 /* the chain is too large */ 478 ifp->if_oerrors++; 479 m_freem(m); 480 continue; 481 } 482 483 bpf_mtap(ifp, m, BPF_D_OUT); 484 485 if (hvn_rndis_output(sc, txd)) { 486 hvn_decap(sc, txd); 487 ifp->if_oerrors++; 488 m_freem(m); 489 continue; 490 } 491 492 sc->sc_tx_next++; 493 } 494 } 495 496 static inline char * 497 hvn_rndis_pktinfo_append(struct rndis_packet_msg *pkt, size_t pktsize, 498 size_t datalen, uint32_t type) 499 { 500 struct rndis_pktinfo *pi; 501 size_t pi_size = sizeof(*pi) + datalen; 502 char *cp; 503 504 KASSERT(pkt->rm_pktinfooffset + pkt->rm_pktinfolen + pi_size <= 505 pktsize); 506 507 cp = (char *)pkt + pkt->rm_pktinfooffset + pkt->rm_pktinfolen; 508 pi = (struct rndis_pktinfo *)cp; 509 pi->rm_size = pi_size; 510 pi->rm_type = type; 511 pi->rm_pktinfooffset = sizeof(*pi); 512 pkt->rm_pktinfolen += pi_size; 513 pkt->rm_dataoffset += pi_size; 514 pkt->rm_len += pi_size; 515 516 return (char *)pi->rm_data; 517 } 518 519 static int 520 hvn_encap(struct hvn_softc *sc, struct mbuf *m, struct hvn_tx_desc **txd0) 521 { 522 struct hvn_tx_desc *txd; 523 struct rndis_packet_msg *pkt; 524 bus_dma_segment_t *seg; 525 size_t pktlen; 526 int i, rv; 527 528 do { 529 txd = &sc->sc_tx_desc[sc->sc_tx_next % HVN_TX_DESC]; 530 sc->sc_tx_next++; 531 } while (!txd->txd_ready); 532 txd->txd_ready = 0; 533 534 pkt = txd->txd_req; 535 memset(pkt, 0, HVN_RNDIS_PKT_LEN); 536 pkt->rm_type = REMOTE_NDIS_PACKET_MSG; 537 pkt->rm_len = sizeof(*pkt) + m->m_pkthdr.len; 538 pkt->rm_dataoffset = RNDIS_DATA_OFFSET; 539 pkt->rm_datalen = m->m_pkthdr.len; 540 pkt->rm_pktinfooffset = sizeof(*pkt); /* adjusted below */ 541 pkt->rm_pktinfolen = 0; 542 543 rv = bus_dmamap_load_mbuf(sc->sc_dmat, txd->txd_dmap, m, BUS_DMA_READ | 544 BUS_DMA_NOWAIT); 545 switch (rv) { 546 case 0: 547 break; 548 case EFBIG: 549 if (m_defrag(m, M_NOWAIT) != NULL && 550 bus_dmamap_load_mbuf(sc->sc_dmat, txd->txd_dmap, m, 551 BUS_DMA_READ | BUS_DMA_NOWAIT) == 0) 552 break; 553 /* FALLTHROUGH */ 554 default: 555 DPRINTF("%s: failed to load mbuf\n", device_xname(sc->sc_dev)); 556 return -1; 557 } 558 txd->txd_buf = m; 559 560 if (m->m_flags & M_VLANTAG) { 561 uint32_t vlan; 562 char *cp; 563 564 vlan = NDIS_VLAN_INFO_MAKE( 565 EVL_VLANOFTAG(m->m_pkthdr.ether_vtag), 566 EVL_PRIOFTAG(m->m_pkthdr.ether_vtag), 0); 567 cp = hvn_rndis_pktinfo_append(pkt, HVN_RNDIS_PKT_LEN, 568 NDIS_VLAN_INFO_SIZE, NDIS_PKTINFO_TYPE_VLAN); 569 memcpy(cp, &vlan, NDIS_VLAN_INFO_SIZE); 570 } 571 572 if (m->m_pkthdr.csum_flags & (M_CSUM_IPv4 | M_CSUM_UDPv4 | 573 M_CSUM_TCPv4)) { 574 uint32_t csum = NDIS_TXCSUM_INFO_IPV4; 575 char *cp; 576 577 if (m->m_pkthdr.csum_flags & M_CSUM_IPv4) 578 csum |= NDIS_TXCSUM_INFO_IPCS; 579 if (m->m_pkthdr.csum_flags & M_CSUM_TCPv4) 580 csum |= NDIS_TXCSUM_INFO_TCPCS; 581 if (m->m_pkthdr.csum_flags & M_CSUM_UDPv4) 582 csum |= NDIS_TXCSUM_INFO_UDPCS; 583 cp = hvn_rndis_pktinfo_append(pkt, HVN_RNDIS_PKT_LEN, 584 NDIS_TXCSUM_INFO_SIZE, NDIS_PKTINFO_TYPE_CSUM); 585 memcpy(cp, &csum, NDIS_TXCSUM_INFO_SIZE); 586 } 587 588 pktlen = pkt->rm_pktinfooffset + pkt->rm_pktinfolen; 589 pkt->rm_pktinfooffset -= RNDIS_HEADER_OFFSET; 590 591 /* Attach an RNDIS message to the first slot */ 592 txd->txd_sgl[0].gpa_page = txd->txd_gpa.gpa_page; 593 txd->txd_sgl[0].gpa_ofs = txd->txd_gpa.gpa_ofs; 594 txd->txd_sgl[0].gpa_len = pktlen; 595 txd->txd_nsge = txd->txd_dmap->dm_nsegs + 1; 596 597 for (i = 0; i < txd->txd_dmap->dm_nsegs; i++) { 598 seg = &txd->txd_dmap->dm_segs[i]; 599 txd->txd_sgl[1 + i].gpa_page = atop(seg->ds_addr); 600 txd->txd_sgl[1 + i].gpa_ofs = seg->ds_addr & PAGE_MASK; 601 txd->txd_sgl[1 + i].gpa_len = seg->ds_len; 602 } 603 604 *txd0 = txd; 605 606 atomic_dec_uint(&sc->sc_tx_avail); 607 608 return 0; 609 } 610 611 static void 612 hvn_decap(struct hvn_softc *sc, struct hvn_tx_desc *txd) 613 { 614 struct ifnet *ifp = SC2IFP(sc); 615 616 bus_dmamap_sync(sc->sc_dmat, txd->txd_dmap, 617 0, txd->txd_dmap->dm_mapsize, 618 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 619 bus_dmamap_unload(sc->sc_dmat, txd->txd_dmap); 620 txd->txd_buf = NULL; 621 txd->txd_nsge = 0; 622 txd->txd_ready = 1; 623 atomic_inc_uint(&sc->sc_tx_avail); 624 ifp->if_flags &= ~IFF_OACTIVE; 625 } 626 627 static void 628 hvn_txeof(struct hvn_softc *sc, uint64_t tid) 629 { 630 struct ifnet *ifp = SC2IFP(sc); 631 struct hvn_tx_desc *txd; 632 struct mbuf *m; 633 uint32_t id = tid >> 32; 634 635 if ((tid & 0xffffffffU) != 0) 636 return; 637 638 id -= HVN_NVS_CHIM_SIG; 639 if (id >= HVN_TX_DESC) { 640 device_printf(sc->sc_dev, "tx packet index too large: %u", id); 641 return; 642 } 643 644 txd = &sc->sc_tx_desc[id]; 645 646 if ((m = txd->txd_buf) == NULL) { 647 device_printf(sc->sc_dev, "no mbuf @%u\n", id); 648 return; 649 } 650 txd->txd_buf = NULL; 651 652 bus_dmamap_sync(sc->sc_dmat, txd->txd_dmap, 653 0, txd->txd_dmap->dm_mapsize, 654 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 655 bus_dmamap_unload(sc->sc_dmat, txd->txd_dmap); 656 m_freem(m); 657 ifp->if_opackets++; 658 659 txd->txd_ready = 1; 660 661 atomic_inc_uint(&sc->sc_tx_avail); 662 ifp->if_flags &= ~IFF_OACTIVE; 663 } 664 665 static int 666 hvn_rx_ring_create(struct hvn_softc *sc) 667 { 668 struct hvn_nvs_rxbuf_conn cmd; 669 struct hvn_nvs_rxbuf_conn_resp *rsp; 670 uint64_t tid; 671 672 if (sc->sc_proto <= HVN_NVS_PROTO_VERSION_2) 673 sc->sc_rx_size = 15 * 1024 * 1024; /* 15MB */ 674 else 675 sc->sc_rx_size = 16 * 1024 * 1024; /* 16MB */ 676 sc->sc_rx_ring = hyperv_dma_alloc(sc->sc_dmat, &sc->sc_rx_dma, 677 sc->sc_rx_size, PAGE_SIZE, PAGE_SIZE, sc->sc_rx_size / PAGE_SIZE); 678 if (sc->sc_rx_ring == NULL) { 679 DPRINTF("%s: failed to allocate Rx ring buffer\n", 680 device_xname(sc->sc_dev)); 681 return -1; 682 } 683 if (vmbus_handle_alloc(sc->sc_chan, &sc->sc_rx_dma, sc->sc_rx_size, 684 &sc->sc_rx_hndl)) { 685 DPRINTF("%s: failed to obtain a PA handle\n", 686 device_xname(sc->sc_dev)); 687 goto errout; 688 } 689 690 memset(&cmd, 0, sizeof(cmd)); 691 cmd.nvs_type = HVN_NVS_TYPE_RXBUF_CONN; 692 cmd.nvs_gpadl = sc->sc_rx_hndl; 693 cmd.nvs_sig = HVN_NVS_RXBUF_SIG; 694 695 tid = atomic_inc_uint_nv(&sc->sc_nvstid); 696 if (hvn_nvs_cmd(sc, &cmd, sizeof(cmd), tid, 100)) 697 goto errout; 698 699 rsp = (struct hvn_nvs_rxbuf_conn_resp *)&sc->sc_nvsrsp; 700 if (rsp->nvs_status != HVN_NVS_STATUS_OK) { 701 DPRINTF("%s: failed to set up the Rx ring\n", 702 device_xname(sc->sc_dev)); 703 goto errout; 704 } 705 if (rsp->nvs_nsect > 1) { 706 DPRINTF("%s: invalid number of Rx ring sections: %u\n", 707 device_xname(sc->sc_dev), rsp->nvs_nsect); 708 hvn_rx_ring_destroy(sc); 709 return -1; 710 } 711 return 0; 712 713 errout: 714 if (sc->sc_rx_hndl) { 715 vmbus_handle_free(sc->sc_chan, sc->sc_rx_hndl); 716 sc->sc_rx_hndl = 0; 717 } 718 if (sc->sc_rx_ring) { 719 kmem_free(sc->sc_rx_ring, sc->sc_rx_size); 720 sc->sc_rx_ring = NULL; 721 } 722 return -1; 723 } 724 725 static int 726 hvn_rx_ring_destroy(struct hvn_softc *sc) 727 { 728 struct hvn_nvs_rxbuf_disconn cmd; 729 uint64_t tid; 730 731 if (sc->sc_rx_ring == NULL) 732 return 0; 733 734 memset(&cmd, 0, sizeof(cmd)); 735 cmd.nvs_type = HVN_NVS_TYPE_RXBUF_DISCONN; 736 cmd.nvs_sig = HVN_NVS_RXBUF_SIG; 737 738 tid = atomic_inc_uint_nv(&sc->sc_nvstid); 739 if (hvn_nvs_cmd(sc, &cmd, sizeof(cmd), tid, 0)) 740 return -1; 741 742 delay(100); 743 744 vmbus_handle_free(sc->sc_chan, sc->sc_rx_hndl); 745 746 sc->sc_rx_hndl = 0; 747 748 kmem_free(sc->sc_rx_ring, sc->sc_rx_size); 749 sc->sc_rx_ring = NULL; 750 751 return 0; 752 } 753 754 static int 755 hvn_tx_ring_create(struct hvn_softc *sc) 756 { 757 const int dmaflags = cold ? BUS_DMA_NOWAIT : BUS_DMA_WAITOK; 758 struct hvn_tx_desc *txd; 759 bus_dma_segment_t *seg; 760 size_t msgsize; 761 int i, rsegs; 762 paddr_t pa; 763 764 msgsize = roundup(HVN_RNDIS_PKT_LEN, 128); 765 766 /* Allocate memory to store RNDIS messages */ 767 if (bus_dmamem_alloc(sc->sc_dmat, msgsize * HVN_TX_DESC, PAGE_SIZE, 0, 768 &sc->sc_tx_mseg, 1, &rsegs, dmaflags)) { 769 DPRINTF("%s: failed to allocate memory for RDNIS messages\n", 770 device_xname(sc->sc_dev)); 771 goto errout; 772 } 773 if (bus_dmamem_map(sc->sc_dmat, &sc->sc_tx_mseg, 1, msgsize * 774 HVN_TX_DESC, (void **)&sc->sc_tx_msgs, dmaflags)) { 775 DPRINTF("%s: failed to establish mapping for RDNIS messages\n", 776 device_xname(sc->sc_dev)); 777 goto errout; 778 } 779 memset(sc->sc_tx_msgs, 0, msgsize * HVN_TX_DESC); 780 if (bus_dmamap_create(sc->sc_dmat, msgsize * HVN_TX_DESC, 1, 781 msgsize * HVN_TX_DESC, 0, dmaflags, &sc->sc_tx_rmap)) { 782 DPRINTF("%s: failed to create map for RDNIS messages\n", 783 device_xname(sc->sc_dev)); 784 goto errout; 785 } 786 if (bus_dmamap_load(sc->sc_dmat, sc->sc_tx_rmap, sc->sc_tx_msgs, 787 msgsize * HVN_TX_DESC, NULL, dmaflags)) { 788 DPRINTF("%s: failed to create map for RDNIS messages\n", 789 device_xname(sc->sc_dev)); 790 goto errout; 791 } 792 793 for (i = 0; i < HVN_TX_DESC; i++) { 794 txd = &sc->sc_tx_desc[i]; 795 if (bus_dmamap_create(sc->sc_dmat, HVN_TX_PKT_SIZE, 796 HVN_TX_FRAGS, HVN_TX_FRAG_SIZE, PAGE_SIZE, dmaflags, 797 &txd->txd_dmap)) { 798 DPRINTF("%s: failed to create map for TX descriptors\n", 799 device_xname(sc->sc_dev)); 800 goto errout; 801 } 802 seg = &sc->sc_tx_rmap->dm_segs[0]; 803 pa = seg->ds_addr + (msgsize * i); 804 txd->txd_gpa.gpa_page = atop(pa); 805 txd->txd_gpa.gpa_ofs = pa & PAGE_MASK; 806 txd->txd_gpa.gpa_len = msgsize; 807 txd->txd_req = (void *)(sc->sc_tx_msgs + (msgsize * i)); 808 txd->txd_id = i + HVN_NVS_CHIM_SIG; 809 txd->txd_ready = 1; 810 } 811 sc->sc_tx_avail = HVN_TX_DESC; 812 813 return 0; 814 815 errout: 816 hvn_tx_ring_destroy(sc); 817 return -1; 818 } 819 820 static void 821 hvn_tx_ring_destroy(struct hvn_softc *sc) 822 { 823 struct hvn_tx_desc *txd; 824 int i; 825 826 for (i = 0; i < HVN_TX_DESC; i++) { 827 txd = &sc->sc_tx_desc[i]; 828 if (txd->txd_dmap == NULL) 829 continue; 830 bus_dmamap_sync(sc->sc_dmat, txd->txd_dmap, 831 0, txd->txd_dmap->dm_mapsize, 832 BUS_DMASYNC_POSTWRITE); 833 bus_dmamap_unload(sc->sc_dmat, txd->txd_dmap); 834 bus_dmamap_destroy(sc->sc_dmat, txd->txd_dmap); 835 txd->txd_dmap = NULL; 836 if (txd->txd_buf == NULL) 837 continue; 838 m_free(txd->txd_buf); 839 txd->txd_buf = NULL; 840 } 841 if (sc->sc_tx_rmap) { 842 bus_dmamap_sync(sc->sc_dmat, sc->sc_tx_rmap, 843 0, txd->txd_dmap->dm_mapsize, 844 BUS_DMASYNC_POSTWRITE); 845 bus_dmamap_unload(sc->sc_dmat, sc->sc_tx_rmap); 846 bus_dmamap_destroy(sc->sc_dmat, sc->sc_tx_rmap); 847 } 848 if (sc->sc_tx_msgs) { 849 size_t msgsize = roundup(HVN_RNDIS_PKT_LEN, 128); 850 851 bus_dmamem_unmap(sc->sc_dmat, sc->sc_tx_msgs, 852 msgsize * HVN_TX_DESC); 853 bus_dmamem_free(sc->sc_dmat, &sc->sc_tx_mseg, 1); 854 } 855 sc->sc_tx_rmap = NULL; 856 sc->sc_tx_msgs = NULL; 857 } 858 859 static int 860 hvn_get_lladdr(struct hvn_softc *sc, uint8_t *enaddr) 861 { 862 size_t addrlen = ETHER_ADDR_LEN; 863 int rv; 864 865 rv = hvn_rndis_query(sc, OID_802_3_PERMANENT_ADDRESS, enaddr, &addrlen); 866 if (rv == 0 && addrlen != ETHER_ADDR_LEN) 867 rv = -1; 868 return rv; 869 } 870 871 static void 872 hvn_get_link_status(struct hvn_softc *sc) 873 { 874 uint32_t state; 875 size_t len = sizeof(state); 876 877 if (hvn_rndis_query(sc, OID_GEN_MEDIA_CONNECT_STATUS, 878 &state, &len) == 0) 879 sc->sc_link_state = (state == NDIS_MEDIA_STATE_CONNECTED) ? 880 LINK_STATE_UP : LINK_STATE_DOWN; 881 } 882 883 static int 884 hvn_nvs_attach(struct hvn_softc *sc) 885 { 886 static const uint32_t protos[] = { 887 HVN_NVS_PROTO_VERSION_5, 888 HVN_NVS_PROTO_VERSION_4, 889 HVN_NVS_PROTO_VERSION_2, 890 HVN_NVS_PROTO_VERSION_1 891 }; 892 const int kmemflags = cold ? KM_NOSLEEP : KM_SLEEP; 893 struct hvn_nvs_init cmd; 894 struct hvn_nvs_init_resp *rsp; 895 struct hvn_nvs_ndis_init ncmd; 896 struct hvn_nvs_ndis_conf ccmd; 897 uint32_t ndisver, ringsize; 898 uint64_t tid; 899 int i; 900 901 sc->sc_nvsbuf = kmem_zalloc(HVN_NVS_BUFSIZE, kmemflags); 902 if (sc->sc_nvsbuf == NULL) { 903 DPRINTF("%s: failed to allocate channel data buffer\n", 904 device_xname(sc->sc_dev)); 905 return -1; 906 } 907 908 /* We need to be able to fit all RNDIS control and data messages */ 909 ringsize = HVN_RNDIS_CTLREQS * 910 (sizeof(struct hvn_nvs_rndis) + sizeof(struct vmbus_gpa)) + 911 HVN_TX_DESC * (sizeof(struct hvn_nvs_rndis) + 912 (HVN_TX_FRAGS + 1) * sizeof(struct vmbus_gpa)); 913 914 sc->sc_chan->ch_flags &= ~CHF_BATCHED; 915 916 /* Associate our interrupt handler with the channel */ 917 if (vmbus_channel_open(sc->sc_chan, ringsize, NULL, 0, 918 hvn_nvs_intr, sc)) { 919 DPRINTF("%s: failed to open channel\n", 920 device_xname(sc->sc_dev)); 921 kmem_free(sc->sc_nvsbuf, HVN_NVS_BUFSIZE); 922 return -1; 923 } 924 925 memset(&cmd, 0, sizeof(cmd)); 926 cmd.nvs_type = HVN_NVS_TYPE_INIT; 927 for (i = 0; i < __arraycount(protos); i++) { 928 cmd.nvs_ver_min = cmd.nvs_ver_max = protos[i]; 929 tid = atomic_inc_uint_nv(&sc->sc_nvstid); 930 if (hvn_nvs_cmd(sc, &cmd, sizeof(cmd), tid, 100)) 931 return -1; 932 933 rsp = (struct hvn_nvs_init_resp *)&sc->sc_nvsrsp; 934 if (rsp->nvs_status == HVN_NVS_STATUS_OK) { 935 sc->sc_proto = protos[i]; 936 break; 937 } 938 } 939 if (i == __arraycount(protos)) { 940 DPRINTF("%s: failed to negotiate NVSP version\n", 941 device_xname(sc->sc_dev)); 942 return -1; 943 } 944 945 if (sc->sc_proto >= HVN_NVS_PROTO_VERSION_2) { 946 memset(&ccmd, 0, sizeof(ccmd)); 947 ccmd.nvs_type = HVN_NVS_TYPE_NDIS_CONF; 948 ccmd.nvs_mtu = HVN_MAXMTU; 949 ccmd.nvs_caps = HVN_NVS_NDIS_CONF_VLAN; 950 951 tid = atomic_inc_uint_nv(&sc->sc_nvstid); 952 if (hvn_nvs_cmd(sc, &ccmd, sizeof(ccmd), tid, 100)) 953 return -1; 954 } 955 956 memset(&ncmd, 0, sizeof(ncmd)); 957 ncmd.nvs_type = HVN_NVS_TYPE_NDIS_INIT; 958 if (sc->sc_proto <= HVN_NVS_PROTO_VERSION_4) 959 ndisver = NDIS_VERSION_6_1; 960 else 961 ndisver = NDIS_VERSION_6_30; 962 ncmd.nvs_ndis_major = (ndisver & 0xffff0000) >> 16; 963 ncmd.nvs_ndis_minor = ndisver & 0x0000ffff; 964 965 tid = atomic_inc_uint_nv(&sc->sc_nvstid); 966 if (hvn_nvs_cmd(sc, &ncmd, sizeof(ncmd), tid, 100)) 967 return -1; 968 969 sc->sc_ndisver = ndisver; 970 971 return 0; 972 } 973 974 static void 975 hvn_nvs_intr(void *arg) 976 { 977 struct hvn_softc *sc = arg; 978 struct ifnet *ifp = SC2IFP(sc); 979 struct vmbus_chanpkt_hdr *cph; 980 const struct hvn_nvs_hdr *nvs; 981 uint64_t rid; 982 uint32_t rlen; 983 int rv; 984 bool dotx = false; 985 986 for (;;) { 987 rv = vmbus_channel_recv(sc->sc_chan, sc->sc_nvsbuf, 988 HVN_NVS_BUFSIZE, &rlen, &rid, 1); 989 if (rv != 0 || rlen == 0) { 990 if (rv != EAGAIN) 991 device_printf(sc->sc_dev, 992 "failed to receive an NVSP packet\n"); 993 break; 994 } 995 cph = (struct vmbus_chanpkt_hdr *)sc->sc_nvsbuf; 996 nvs = (const struct hvn_nvs_hdr *)VMBUS_CHANPKT_CONST_DATA(cph); 997 998 if (cph->cph_type == VMBUS_CHANPKT_TYPE_COMP) { 999 switch (nvs->nvs_type) { 1000 case HVN_NVS_TYPE_INIT_RESP: 1001 case HVN_NVS_TYPE_RXBUF_CONNRESP: 1002 case HVN_NVS_TYPE_CHIM_CONNRESP: 1003 case HVN_NVS_TYPE_SUBCH_RESP: 1004 /* copy the response back */ 1005 memcpy(&sc->sc_nvsrsp, nvs, HVN_NVS_MSGSIZE); 1006 sc->sc_nvsdone = 1; 1007 wakeup(&sc->sc_nvsrsp); 1008 break; 1009 case HVN_NVS_TYPE_RNDIS_ACK: 1010 dotx = true; 1011 hvn_txeof(sc, cph->cph_tid); 1012 break; 1013 default: 1014 device_printf(sc->sc_dev, 1015 "unhandled NVSP packet type %u " 1016 "on completion\n", nvs->nvs_type); 1017 break; 1018 } 1019 } else if (cph->cph_type == VMBUS_CHANPKT_TYPE_RXBUF) { 1020 switch (nvs->nvs_type) { 1021 case HVN_NVS_TYPE_RNDIS: 1022 hvn_rndis_input(sc, cph->cph_tid, cph); 1023 break; 1024 default: 1025 device_printf(sc->sc_dev, 1026 "unhandled NVSP packet type %u " 1027 "on receive\n", nvs->nvs_type); 1028 break; 1029 } 1030 } else 1031 device_printf(sc->sc_dev, 1032 "unknown NVSP packet type %u\n", cph->cph_type); 1033 } 1034 1035 if (dotx) 1036 if_schedule_deferred_start(ifp); 1037 } 1038 1039 static int 1040 hvn_nvs_cmd(struct hvn_softc *sc, void *cmd, size_t cmdsize, uint64_t tid, 1041 int timo) 1042 { 1043 struct hvn_nvs_hdr *hdr = cmd; 1044 int tries = 10; 1045 int rv, s; 1046 1047 sc->sc_nvsdone = 0; 1048 1049 do { 1050 rv = vmbus_channel_send(sc->sc_chan, cmd, cmdsize, 1051 tid, VMBUS_CHANPKT_TYPE_INBAND, 1052 timo ? VMBUS_CHANPKT_FLAG_RC : 0); 1053 if (rv == EAGAIN) { 1054 if (cold) 1055 delay(1000); 1056 else 1057 tsleep(cmd, PRIBIO, "nvsout", mstohz(1)); 1058 } else if (rv) { 1059 DPRINTF("%s: NVSP operation %u send error %d\n", 1060 device_xname(sc->sc_dev), hdr->nvs_type, rv); 1061 return rv; 1062 } 1063 } while (rv != 0 && --tries > 0); 1064 1065 if (tries == 0 && rv != 0) { 1066 device_printf(sc->sc_dev, 1067 "NVSP operation %u send error %d\n", hdr->nvs_type, rv); 1068 return rv; 1069 } 1070 1071 if (timo == 0) 1072 return 0; 1073 1074 do { 1075 if (cold) { 1076 delay(1000); 1077 s = splnet(); 1078 hvn_nvs_intr(sc); 1079 splx(s); 1080 } else 1081 tsleep(sc->sc_nvsrsp, PRIBIO | PCATCH, "nvscmd", 1082 mstohz(1)); 1083 } while (--timo > 0 && sc->sc_nvsdone != 1); 1084 1085 if (timo == 0 && sc->sc_nvsdone != 1) { 1086 device_printf(sc->sc_dev, "NVSP operation %u timed out\n", 1087 hdr->nvs_type); 1088 return ETIMEDOUT; 1089 } 1090 return 0; 1091 } 1092 1093 static int 1094 hvn_nvs_ack(struct hvn_softc *sc, uint64_t tid) 1095 { 1096 struct hvn_nvs_rndis_ack cmd; 1097 int tries = 5; 1098 int rv; 1099 1100 cmd.nvs_type = HVN_NVS_TYPE_RNDIS_ACK; 1101 cmd.nvs_status = HVN_NVS_STATUS_OK; 1102 do { 1103 rv = vmbus_channel_send(sc->sc_chan, &cmd, sizeof(cmd), 1104 tid, VMBUS_CHANPKT_TYPE_COMP, 0); 1105 if (rv == EAGAIN) 1106 delay(10); 1107 else if (rv) { 1108 DPRINTF("%s: NVSP acknowledgement error %d\n", 1109 device_xname(sc->sc_dev), rv); 1110 return rv; 1111 } 1112 } while (rv != 0 && --tries > 0); 1113 return rv; 1114 } 1115 1116 static void 1117 hvn_nvs_detach(struct hvn_softc *sc) 1118 { 1119 1120 if (vmbus_channel_close(sc->sc_chan) == 0) { 1121 kmem_free(sc->sc_nvsbuf, HVN_NVS_BUFSIZE); 1122 sc->sc_nvsbuf = NULL; 1123 } 1124 } 1125 1126 static inline struct rndis_cmd * 1127 hvn_alloc_cmd(struct hvn_softc *sc) 1128 { 1129 struct rndis_cmd *rc; 1130 1131 mutex_enter(&sc->sc_cntl_fqlck); 1132 while ((rc = TAILQ_FIRST(&sc->sc_cntl_fq)) == NULL) 1133 /* XXX use condvar(9) instead of mtsleep */ 1134 mtsleep(&sc->sc_cntl_fq, PRIBIO, "nvsalloc", 1, 1135 &sc->sc_cntl_fqlck); 1136 TAILQ_REMOVE(&sc->sc_cntl_fq, rc, rc_entry); 1137 mutex_exit(&sc->sc_cntl_fqlck); 1138 return rc; 1139 } 1140 1141 static inline void 1142 hvn_submit_cmd(struct hvn_softc *sc, struct rndis_cmd *rc) 1143 { 1144 1145 mutex_enter(&sc->sc_cntl_sqlck); 1146 TAILQ_INSERT_TAIL(&sc->sc_cntl_sq, rc, rc_entry); 1147 mutex_exit(&sc->sc_cntl_sqlck); 1148 } 1149 1150 static inline struct rndis_cmd * 1151 hvn_complete_cmd(struct hvn_softc *sc, uint32_t id) 1152 { 1153 struct rndis_cmd *rc; 1154 1155 mutex_enter(&sc->sc_cntl_sqlck); 1156 TAILQ_FOREACH(rc, &sc->sc_cntl_sq, rc_entry) { 1157 if (rc->rc_id == id) { 1158 TAILQ_REMOVE(&sc->sc_cntl_sq, rc, rc_entry); 1159 break; 1160 } 1161 } 1162 mutex_exit(&sc->sc_cntl_sqlck); 1163 if (rc != NULL) { 1164 mutex_enter(&sc->sc_cntl_cqlck); 1165 TAILQ_INSERT_TAIL(&sc->sc_cntl_cq, rc, rc_entry); 1166 mutex_exit(&sc->sc_cntl_cqlck); 1167 } 1168 return rc; 1169 } 1170 1171 static inline void 1172 hvn_release_cmd(struct hvn_softc *sc, struct rndis_cmd *rc) 1173 { 1174 1175 mutex_enter(&sc->sc_cntl_cqlck); 1176 TAILQ_REMOVE(&sc->sc_cntl_cq, rc, rc_entry); 1177 mutex_exit(&sc->sc_cntl_cqlck); 1178 } 1179 1180 static inline int 1181 hvn_rollback_cmd(struct hvn_softc *sc, struct rndis_cmd *rc) 1182 { 1183 struct rndis_cmd *rn; 1184 1185 mutex_enter(&sc->sc_cntl_sqlck); 1186 TAILQ_FOREACH(rn, &sc->sc_cntl_sq, rc_entry) { 1187 if (rn == rc) { 1188 TAILQ_REMOVE(&sc->sc_cntl_sq, rc, rc_entry); 1189 mutex_exit(&sc->sc_cntl_sqlck); 1190 return 0; 1191 } 1192 } 1193 mutex_exit(&sc->sc_cntl_sqlck); 1194 return -1; 1195 } 1196 1197 static inline void 1198 hvn_free_cmd(struct hvn_softc *sc, struct rndis_cmd *rc) 1199 { 1200 1201 memset(rc->rc_req, 0, sizeof(struct rndis_packet_msg)); 1202 memset(&rc->rc_cmp, 0, sizeof(rc->rc_cmp)); 1203 memset(&rc->rc_msg, 0, sizeof(rc->rc_msg)); 1204 mutex_enter(&sc->sc_cntl_fqlck); 1205 TAILQ_INSERT_TAIL(&sc->sc_cntl_fq, rc, rc_entry); 1206 mutex_exit(&sc->sc_cntl_fqlck); 1207 wakeup(&sc->sc_cntl_fq); 1208 } 1209 1210 static int 1211 hvn_rndis_attach(struct hvn_softc *sc) 1212 { 1213 const int dmaflags = cold ? BUS_DMA_NOWAIT : BUS_DMA_WAITOK; 1214 struct rndis_init_req *req; 1215 struct rndis_init_comp *cmp; 1216 struct rndis_cmd *rc; 1217 int i, rv; 1218 1219 /* RNDIS control message queues */ 1220 TAILQ_INIT(&sc->sc_cntl_sq); 1221 TAILQ_INIT(&sc->sc_cntl_cq); 1222 TAILQ_INIT(&sc->sc_cntl_fq); 1223 mutex_init(&sc->sc_cntl_sqlck, MUTEX_DEFAULT, IPL_NET); 1224 mutex_init(&sc->sc_cntl_cqlck, MUTEX_DEFAULT, IPL_NET); 1225 mutex_init(&sc->sc_cntl_fqlck, MUTEX_DEFAULT, IPL_NET); 1226 1227 for (i = 0; i < HVN_RNDIS_CTLREQS; i++) { 1228 rc = &sc->sc_cntl_msgs[i]; 1229 if (bus_dmamap_create(sc->sc_dmat, PAGE_SIZE, 1, PAGE_SIZE, 0, 1230 dmaflags, &rc->rc_dmap)) { 1231 DPRINTF("%s: failed to create RNDIS command map\n", 1232 device_xname(sc->sc_dev)); 1233 goto errout; 1234 } 1235 if (bus_dmamem_alloc(sc->sc_dmat, PAGE_SIZE, PAGE_SIZE, 1236 0, &rc->rc_segs, 1, &rc->rc_nsegs, dmaflags)) { 1237 DPRINTF("%s: failed to allocate RNDIS command\n", 1238 device_xname(sc->sc_dev)); 1239 bus_dmamap_destroy(sc->sc_dmat, rc->rc_dmap); 1240 goto errout; 1241 } 1242 if (bus_dmamem_map(sc->sc_dmat, &rc->rc_segs, rc->rc_nsegs, 1243 PAGE_SIZE, (void **)&rc->rc_req, dmaflags)) { 1244 DPRINTF("%s: failed to allocate RNDIS command\n", 1245 device_xname(sc->sc_dev)); 1246 bus_dmamem_free(sc->sc_dmat, &rc->rc_segs, 1247 rc->rc_nsegs); 1248 bus_dmamap_destroy(sc->sc_dmat, rc->rc_dmap); 1249 goto errout; 1250 } 1251 memset(rc->rc_req, 0, PAGE_SIZE); 1252 if (bus_dmamap_load(sc->sc_dmat, rc->rc_dmap, rc->rc_req, 1253 PAGE_SIZE, NULL, dmaflags)) { 1254 DPRINTF("%s: failed to load RNDIS command map\n", 1255 device_xname(sc->sc_dev)); 1256 bus_dmamem_free(sc->sc_dmat, &rc->rc_segs, 1257 rc->rc_nsegs); 1258 bus_dmamap_destroy(sc->sc_dmat, rc->rc_dmap); 1259 goto errout; 1260 } 1261 rc->rc_gpa = atop(rc->rc_dmap->dm_segs[0].ds_addr); 1262 TAILQ_INSERT_TAIL(&sc->sc_cntl_fq, rc, rc_entry); 1263 } 1264 1265 rc = hvn_alloc_cmd(sc); 1266 1267 bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE, 1268 BUS_DMASYNC_PREREAD); 1269 1270 rc->rc_id = atomic_inc_uint_nv(&sc->sc_rndisrid); 1271 1272 req = rc->rc_req; 1273 req->rm_type = REMOTE_NDIS_INITIALIZE_MSG; 1274 req->rm_len = sizeof(*req); 1275 req->rm_rid = rc->rc_id; 1276 req->rm_ver_major = RNDIS_VERSION_MAJOR; 1277 req->rm_ver_minor = RNDIS_VERSION_MINOR; 1278 req->rm_max_xfersz = HVN_RNDIS_XFER_SIZE; 1279 1280 rc->rc_cmplen = sizeof(*cmp); 1281 1282 bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE, 1283 BUS_DMASYNC_PREWRITE); 1284 1285 if ((rv = hvn_rndis_cmd(sc, rc, 500)) != 0) { 1286 DPRINTF("%s: INITIALIZE_MSG failed, error %d\n", 1287 device_xname(sc->sc_dev), rv); 1288 hvn_free_cmd(sc, rc); 1289 goto errout; 1290 } 1291 cmp = (struct rndis_init_comp *)&rc->rc_cmp; 1292 if (cmp->rm_status != RNDIS_STATUS_SUCCESS) { 1293 DPRINTF("%s: failed to init RNDIS, error %#x\n", 1294 device_xname(sc->sc_dev), cmp->rm_status); 1295 hvn_free_cmd(sc, rc); 1296 goto errout; 1297 } 1298 1299 hvn_free_cmd(sc, rc); 1300 1301 /* Initialize RNDIS Data command */ 1302 memset(&sc->sc_data_msg, 0, sizeof(sc->sc_data_msg)); 1303 sc->sc_data_msg.nvs_type = HVN_NVS_TYPE_RNDIS; 1304 sc->sc_data_msg.nvs_rndis_mtype = HVN_NVS_RNDIS_MTYPE_DATA; 1305 sc->sc_data_msg.nvs_chim_idx = HVN_NVS_CHIM_IDX_INVALID; 1306 1307 return 0; 1308 1309 errout: 1310 for (i = 0; i < HVN_RNDIS_CTLREQS; i++) { 1311 rc = &sc->sc_cntl_msgs[i]; 1312 if (rc->rc_req == NULL) 1313 continue; 1314 TAILQ_REMOVE(&sc->sc_cntl_fq, rc, rc_entry); 1315 bus_dmamem_free(sc->sc_dmat, &rc->rc_segs, rc->rc_nsegs); 1316 rc->rc_req = NULL; 1317 bus_dmamap_destroy(sc->sc_dmat, rc->rc_dmap); 1318 } 1319 return -1; 1320 } 1321 1322 static int 1323 hvn_set_capabilities(struct hvn_softc *sc) 1324 { 1325 struct ndis_offload_params params; 1326 size_t len = sizeof(params); 1327 1328 memset(¶ms, 0, sizeof(params)); 1329 1330 params.ndis_hdr.ndis_type = NDIS_OBJTYPE_DEFAULT; 1331 if (sc->sc_ndisver < NDIS_VERSION_6_30) { 1332 params.ndis_hdr.ndis_rev = NDIS_OFFLOAD_PARAMS_REV_2; 1333 len = params.ndis_hdr.ndis_size = NDIS_OFFLOAD_PARAMS_SIZE_6_1; 1334 } else { 1335 params.ndis_hdr.ndis_rev = NDIS_OFFLOAD_PARAMS_REV_3; 1336 len = params.ndis_hdr.ndis_size = NDIS_OFFLOAD_PARAMS_SIZE; 1337 } 1338 1339 params.ndis_ip4csum = NDIS_OFFLOAD_PARAM_TXRX; 1340 params.ndis_tcp4csum = NDIS_OFFLOAD_PARAM_TXRX; 1341 params.ndis_tcp6csum = NDIS_OFFLOAD_PARAM_TXRX; 1342 if (sc->sc_ndisver >= NDIS_VERSION_6_30) { 1343 params.ndis_udp4csum = NDIS_OFFLOAD_PARAM_TXRX; 1344 params.ndis_udp6csum = NDIS_OFFLOAD_PARAM_TXRX; 1345 } 1346 1347 return hvn_rndis_set(sc, OID_TCP_OFFLOAD_PARAMETERS, ¶ms, len); 1348 } 1349 1350 static int 1351 hvn_rndis_cmd(struct hvn_softc *sc, struct rndis_cmd *rc, int timo) 1352 { 1353 struct hvn_nvs_rndis *msg = &rc->rc_msg; 1354 struct rndis_msghdr *hdr = rc->rc_req; 1355 struct vmbus_gpa sgl[1]; 1356 int tries = 10; 1357 int rv, s; 1358 1359 KASSERT(timo > 0); 1360 1361 msg->nvs_type = HVN_NVS_TYPE_RNDIS; 1362 msg->nvs_rndis_mtype = HVN_NVS_RNDIS_MTYPE_CTRL; 1363 msg->nvs_chim_idx = HVN_NVS_CHIM_IDX_INVALID; 1364 1365 sgl[0].gpa_page = rc->rc_gpa; 1366 sgl[0].gpa_len = hdr->rm_len; 1367 sgl[0].gpa_ofs = 0; 1368 1369 rc->rc_done = 0; 1370 1371 hvn_submit_cmd(sc, rc); 1372 1373 do { 1374 rv = vmbus_channel_send_sgl(sc->sc_chan, sgl, 1, &rc->rc_msg, 1375 sizeof(*msg), rc->rc_id); 1376 if (rv == EAGAIN) { 1377 if (cold) 1378 delay(1000); 1379 else 1380 tsleep(rc, PRIBIO, "rndisout", mstohz(1)); 1381 } else if (rv) { 1382 DPRINTF("%s: RNDIS operation %u send error %d\n", 1383 device_xname(sc->sc_dev), hdr->rm_type, rv); 1384 hvn_rollback_cmd(sc, rc); 1385 return rv; 1386 } 1387 } while (rv != 0 && --tries > 0); 1388 1389 if (tries == 0 && rv != 0) { 1390 device_printf(sc->sc_dev, 1391 "RNDIS operation %u send error %d\n", hdr->rm_type, rv); 1392 return rv; 1393 } 1394 1395 bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE, 1396 BUS_DMASYNC_POSTWRITE); 1397 1398 do { 1399 if (cold) { 1400 delay(1000); 1401 s = splnet(); 1402 hvn_nvs_intr(sc); 1403 splx(s); 1404 } else 1405 tsleep(rc, PRIBIO | PCATCH, "rndiscmd", mstohz(1)); 1406 } while (--timo > 0 && rc->rc_done != 1); 1407 1408 bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE, 1409 BUS_DMASYNC_POSTREAD); 1410 1411 if (rc->rc_done != 1) { 1412 rv = timo == 0 ? ETIMEDOUT : EINTR; 1413 if (hvn_rollback_cmd(sc, rc)) { 1414 hvn_release_cmd(sc, rc); 1415 rv = 0; 1416 } else if (rv == ETIMEDOUT) { 1417 device_printf(sc->sc_dev, 1418 "RNDIS operation %u timed out\n", hdr->rm_type); 1419 } 1420 return rv; 1421 } 1422 1423 hvn_release_cmd(sc, rc); 1424 return 0; 1425 } 1426 1427 static void 1428 hvn_rndis_input(struct hvn_softc *sc, uint64_t tid, void *arg) 1429 { 1430 struct vmbus_chanpkt_prplist *cp = arg; 1431 uint32_t off, len, type; 1432 int i; 1433 1434 if (sc->sc_rx_ring == NULL) { 1435 DPRINTF("%s: invalid rx ring\n", device_xname(sc->sc_dev)); 1436 return; 1437 } 1438 1439 for (i = 0; i < cp->cp_range_cnt; i++) { 1440 off = cp->cp_range[i].gpa_ofs; 1441 len = cp->cp_range[i].gpa_len; 1442 1443 KASSERT(off + len <= sc->sc_rx_size); 1444 KASSERT(len >= RNDIS_HEADER_OFFSET + 4); 1445 1446 memcpy(&type, sc->sc_rx_ring + off, sizeof(type)); 1447 switch (type) { 1448 /* data message */ 1449 case REMOTE_NDIS_PACKET_MSG: 1450 hvn_rxeof(sc, sc->sc_rx_ring + off, len); 1451 break; 1452 /* completion messages */ 1453 case REMOTE_NDIS_INITIALIZE_CMPLT: 1454 case REMOTE_NDIS_QUERY_CMPLT: 1455 case REMOTE_NDIS_SET_CMPLT: 1456 case REMOTE_NDIS_RESET_CMPLT: 1457 case REMOTE_NDIS_KEEPALIVE_CMPLT: 1458 hvn_rndis_complete(sc, sc->sc_rx_ring + off, len); 1459 break; 1460 /* notification message */ 1461 case REMOTE_NDIS_INDICATE_STATUS_MSG: 1462 hvn_rndis_status(sc, sc->sc_rx_ring + off, len); 1463 break; 1464 default: 1465 device_printf(sc->sc_dev, 1466 "unhandled RNDIS message type %u\n", type); 1467 break; 1468 } 1469 } 1470 1471 hvn_nvs_ack(sc, tid); 1472 } 1473 1474 static inline struct mbuf * 1475 hvn_devget(struct hvn_softc *sc, void *buf, uint32_t len) 1476 { 1477 struct ifnet *ifp = SC2IFP(sc); 1478 struct mbuf *m; 1479 size_t size = len + ETHER_ALIGN; 1480 1481 MGETHDR(m, M_NOWAIT, MT_DATA); 1482 if (m == NULL) 1483 return NULL; 1484 1485 if (size > MHLEN) { 1486 if (size <= MCLBYTES) 1487 MCLGET(m, M_NOWAIT); 1488 else 1489 MEXTMALLOC(m, size, M_NOWAIT); 1490 if ((m->m_flags & M_EXT) == 0) { 1491 m_freem(m); 1492 return NULL; 1493 } 1494 } 1495 1496 m->m_len = m->m_pkthdr.len = size; 1497 m_adj(m, ETHER_ALIGN); 1498 m_copyback(m, 0, len, buf); 1499 m_set_rcvif(m, ifp); 1500 return m; 1501 } 1502 1503 static void 1504 hvn_rxeof(struct hvn_softc *sc, uint8_t *buf, uint32_t len) 1505 { 1506 struct ifnet *ifp = SC2IFP(sc); 1507 struct rndis_packet_msg *pkt; 1508 struct rndis_pktinfo *pi; 1509 uint32_t csum, vlan; 1510 struct mbuf *m; 1511 1512 if (!(ifp->if_flags & IFF_RUNNING)) 1513 return; 1514 1515 if (len < sizeof(*pkt)) { 1516 device_printf(sc->sc_dev, "data packet too short: %u\n", 1517 len); 1518 return; 1519 } 1520 1521 pkt = (struct rndis_packet_msg *)buf; 1522 if (pkt->rm_dataoffset + pkt->rm_datalen > len) { 1523 device_printf(sc->sc_dev, 1524 "data packet out of bounds: %u@%u\n", pkt->rm_dataoffset, 1525 pkt->rm_datalen); 1526 return; 1527 } 1528 1529 if ((m = hvn_devget(sc, buf + RNDIS_HEADER_OFFSET + pkt->rm_dataoffset, 1530 pkt->rm_datalen)) == NULL) { 1531 ifp->if_ierrors++; 1532 return; 1533 } 1534 1535 if (pkt->rm_pktinfooffset + pkt->rm_pktinfolen > len) { 1536 device_printf(sc->sc_dev, 1537 "pktinfo is out of bounds: %u@%u vs %u\n", 1538 pkt->rm_pktinfolen, pkt->rm_pktinfooffset, len); 1539 goto done; 1540 } 1541 1542 pi = (struct rndis_pktinfo *)(buf + RNDIS_HEADER_OFFSET + 1543 pkt->rm_pktinfooffset); 1544 while (pkt->rm_pktinfolen > 0) { 1545 if (pi->rm_size > pkt->rm_pktinfolen) { 1546 device_printf(sc->sc_dev, 1547 "invalid pktinfo size: %u/%u\n", pi->rm_size, 1548 pkt->rm_pktinfolen); 1549 break; 1550 } 1551 1552 switch (pi->rm_type) { 1553 case NDIS_PKTINFO_TYPE_CSUM: 1554 memcpy(&csum, pi->rm_data, sizeof(csum)); 1555 if (csum & NDIS_RXCSUM_INFO_IPCS_OK) 1556 m->m_pkthdr.csum_flags |= M_CSUM_IPv4; 1557 if (csum & NDIS_RXCSUM_INFO_TCPCS_OK) 1558 m->m_pkthdr.csum_flags |= M_CSUM_TCPv4; 1559 if (csum & NDIS_RXCSUM_INFO_UDPCS_OK) 1560 m->m_pkthdr.csum_flags |= M_CSUM_UDPv4; 1561 break; 1562 case NDIS_PKTINFO_TYPE_VLAN: 1563 memcpy(&vlan, pi->rm_data, sizeof(vlan)); 1564 if (vlan != 0xffffffff) { 1565 m->m_pkthdr.ether_vtag = 1566 NDIS_VLAN_INFO_ID(vlan) | 1567 (NDIS_VLAN_INFO_PRI(vlan) << EVL_PRIO_BITS); 1568 m->m_flags |= M_VLANTAG; 1569 } 1570 break; 1571 default: 1572 DPRINTF("%s: unhandled pktinfo type %u\n", 1573 device_xname(sc->sc_dev), pi->rm_type); 1574 break; 1575 } 1576 1577 pkt->rm_pktinfolen -= pi->rm_size; 1578 pi = (struct rndis_pktinfo *)((char *)pi + pi->rm_size); 1579 } 1580 1581 done: 1582 if_percpuq_enqueue(sc->sc_ipq, m); 1583 } 1584 1585 static void 1586 hvn_rndis_complete(struct hvn_softc *sc, uint8_t *buf, uint32_t len) 1587 { 1588 struct rndis_cmd *rc; 1589 uint32_t id; 1590 1591 memcpy(&id, buf + RNDIS_HEADER_OFFSET, sizeof(id)); 1592 if ((rc = hvn_complete_cmd(sc, id)) != NULL) { 1593 if (len < rc->rc_cmplen) 1594 device_printf(sc->sc_dev, 1595 "RNDIS response %u too short: %u\n", id, len); 1596 else 1597 memcpy(&rc->rc_cmp, buf, rc->rc_cmplen); 1598 if (len > rc->rc_cmplen && 1599 len - rc->rc_cmplen > HVN_RNDIS_BUFSIZE) 1600 device_printf(sc->sc_dev, 1601 "RNDIS response %u too large: %u\n", id, len); 1602 else if (len > rc->rc_cmplen) 1603 memcpy(&rc->rc_cmpbuf, buf + rc->rc_cmplen, 1604 len - rc->rc_cmplen); 1605 rc->rc_done = 1; 1606 wakeup(rc); 1607 } else { 1608 DPRINTF("%s: failed to complete RNDIS request id %u\n", 1609 device_xname(sc->sc_dev), id); 1610 } 1611 } 1612 1613 static int 1614 hvn_rndis_output(struct hvn_softc *sc, struct hvn_tx_desc *txd) 1615 { 1616 uint64_t rid = (uint64_t)txd->txd_id << 32; 1617 int rv; 1618 1619 rv = vmbus_channel_send_sgl(sc->sc_chan, txd->txd_sgl, txd->txd_nsge, 1620 &sc->sc_data_msg, sizeof(sc->sc_data_msg), rid); 1621 if (rv) { 1622 DPRINTF("%s: RNDIS data send error %d\n", 1623 device_xname(sc->sc_dev), rv); 1624 return rv; 1625 } 1626 return 0; 1627 } 1628 1629 static void 1630 hvn_rndis_status(struct hvn_softc *sc, uint8_t *buf, uint32_t len) 1631 { 1632 struct ifnet *ifp = SC2IFP(sc); 1633 uint32_t status; 1634 int link_state = sc->sc_link_state; 1635 1636 memcpy(&status, buf + RNDIS_HEADER_OFFSET, sizeof(status)); 1637 switch (status) { 1638 case RNDIS_STATUS_MEDIA_CONNECT: 1639 sc->sc_link_state = LINK_STATE_UP; 1640 break; 1641 case RNDIS_STATUS_MEDIA_DISCONNECT: 1642 sc->sc_link_state = LINK_STATE_DOWN; 1643 break; 1644 /* Ignore these */ 1645 case RNDIS_STATUS_OFFLOAD_CURRENT_CONFIG: 1646 return; 1647 default: 1648 DPRINTF("%s: unhandled status %#x\n", device_xname(sc->sc_dev), 1649 status); 1650 return; 1651 } 1652 if (link_state != sc->sc_link_state) 1653 if_link_state_change(ifp, sc->sc_link_state); 1654 } 1655 1656 static int 1657 hvn_rndis_query(struct hvn_softc *sc, uint32_t oid, void *res, size_t *length) 1658 { 1659 struct rndis_cmd *rc; 1660 struct rndis_query_req *req; 1661 struct rndis_query_comp *cmp; 1662 size_t olength = *length; 1663 int rv; 1664 1665 rc = hvn_alloc_cmd(sc); 1666 1667 bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE, 1668 BUS_DMASYNC_PREREAD); 1669 1670 rc->rc_id = atomic_inc_uint_nv(&sc->sc_rndisrid); 1671 1672 req = rc->rc_req; 1673 req->rm_type = REMOTE_NDIS_QUERY_MSG; 1674 req->rm_len = sizeof(*req); 1675 req->rm_rid = rc->rc_id; 1676 req->rm_oid = oid; 1677 req->rm_infobufoffset = sizeof(*req) - RNDIS_HEADER_OFFSET; 1678 1679 rc->rc_cmplen = sizeof(*cmp); 1680 1681 bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE, 1682 BUS_DMASYNC_PREWRITE); 1683 1684 if ((rv = hvn_rndis_cmd(sc, rc, 500)) != 0) { 1685 DPRINTF("%s: QUERY_MSG failed, error %d\n", 1686 device_xname(sc->sc_dev), rv); 1687 hvn_free_cmd(sc, rc); 1688 return rv; 1689 } 1690 1691 cmp = (struct rndis_query_comp *)&rc->rc_cmp; 1692 switch (cmp->rm_status) { 1693 case RNDIS_STATUS_SUCCESS: 1694 if (cmp->rm_infobuflen > olength) { 1695 rv = EINVAL; 1696 break; 1697 } 1698 memcpy(res, rc->rc_cmpbuf, cmp->rm_infobuflen); 1699 *length = cmp->rm_infobuflen; 1700 break; 1701 default: 1702 *length = 0; 1703 rv = EIO; 1704 break; 1705 } 1706 1707 hvn_free_cmd(sc, rc); 1708 return rv; 1709 } 1710 1711 static int 1712 hvn_rndis_set(struct hvn_softc *sc, uint32_t oid, void *data, size_t length) 1713 { 1714 struct rndis_cmd *rc; 1715 struct rndis_set_req *req; 1716 struct rndis_set_comp *cmp; 1717 int rv; 1718 1719 rc = hvn_alloc_cmd(sc); 1720 1721 bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE, 1722 BUS_DMASYNC_PREREAD); 1723 1724 rc->rc_id = atomic_inc_uint_nv(&sc->sc_rndisrid); 1725 1726 req = rc->rc_req; 1727 req->rm_type = REMOTE_NDIS_SET_MSG; 1728 req->rm_len = sizeof(*req) + length; 1729 req->rm_rid = rc->rc_id; 1730 req->rm_oid = oid; 1731 req->rm_infobufoffset = sizeof(*req) - RNDIS_HEADER_OFFSET; 1732 1733 rc->rc_cmplen = sizeof(*cmp); 1734 1735 if (length > 0) { 1736 KASSERT(sizeof(*req) + length < PAGE_SIZE); 1737 req->rm_infobuflen = length; 1738 memcpy(req + 1, data, length); 1739 } 1740 1741 bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE, 1742 BUS_DMASYNC_PREWRITE); 1743 1744 if ((rv = hvn_rndis_cmd(sc, rc, 500)) != 0) { 1745 DPRINTF("%s: SET_MSG failed, error %d\n", 1746 device_xname(sc->sc_dev), rv); 1747 hvn_free_cmd(sc, rc); 1748 return rv; 1749 } 1750 1751 cmp = (struct rndis_set_comp *)&rc->rc_cmp; 1752 if (cmp->rm_status != RNDIS_STATUS_SUCCESS) 1753 rv = EIO; 1754 1755 hvn_free_cmd(sc, rc); 1756 return rv; 1757 } 1758 1759 static int 1760 hvn_rndis_open(struct hvn_softc *sc) 1761 { 1762 uint32_t filter; 1763 int rv; 1764 1765 if (sc->sc_promisc) 1766 filter = RNDIS_PACKET_TYPE_PROMISCUOUS; 1767 else 1768 filter = RNDIS_PACKET_TYPE_BROADCAST | 1769 RNDIS_PACKET_TYPE_ALL_MULTICAST | 1770 RNDIS_PACKET_TYPE_DIRECTED; 1771 1772 rv = hvn_rndis_set(sc, OID_GEN_CURRENT_PACKET_FILTER, 1773 &filter, sizeof(filter)); 1774 if (rv) { 1775 DPRINTF("%s: failed to set RNDIS filter to %#x\n", 1776 device_xname(sc->sc_dev), filter); 1777 } 1778 return rv; 1779 } 1780 1781 static int 1782 hvn_rndis_close(struct hvn_softc *sc) 1783 { 1784 uint32_t filter = 0; 1785 int rv; 1786 1787 rv = hvn_rndis_set(sc, OID_GEN_CURRENT_PACKET_FILTER, 1788 &filter, sizeof(filter)); 1789 if (rv) { 1790 DPRINTF("%s: failed to clear RNDIS filter\n", 1791 device_xname(sc->sc_dev)); 1792 } 1793 return rv; 1794 } 1795 1796 static void 1797 hvn_rndis_detach(struct hvn_softc *sc) 1798 { 1799 struct rndis_cmd *rc; 1800 struct rndis_halt_req *req; 1801 int rv; 1802 1803 rc = hvn_alloc_cmd(sc); 1804 1805 bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE, 1806 BUS_DMASYNC_PREREAD); 1807 1808 rc->rc_id = atomic_inc_uint_nv(&sc->sc_rndisrid); 1809 1810 req = rc->rc_req; 1811 req->rm_type = REMOTE_NDIS_HALT_MSG; 1812 req->rm_len = sizeof(*req); 1813 req->rm_rid = rc->rc_id; 1814 1815 bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE, 1816 BUS_DMASYNC_PREWRITE); 1817 1818 if ((rv = hvn_rndis_cmd(sc, rc, 500)) != 0) { 1819 DPRINTF("%s: HALT_MSG failed, error %d\n", 1820 device_xname(sc->sc_dev), rv); 1821 } 1822 hvn_free_cmd(sc, rc); 1823 } 1824
Indexes created Thu Oct 02 14:10:14 GMT 2025