1 /* $NetBSD: if_kue.c,v 1.69 2010/04/05 07:21:48 joerg Exp $ */ 2 /* 3 * Copyright (c) 1997, 1998, 1999, 2000 4 * Bill Paul <wpaul@ee.columbia.edu>. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Bill Paul. 17 * 4. Neither the name of the author nor the names of any co-contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 31 * THE POSSIBILITY OF SUCH DAMAGE. 32 * 33 * $FreeBSD: src/sys/dev/usb/if_kue.c,v 1.14 2000/01/14 01:36:15 wpaul Exp $ 34 */ 35 36 /* 37 * Kawasaki LSI KL5KUSB101B USB to ethernet adapter driver. 38 * 39 * Written by Bill Paul <wpaul@ee.columbia.edu> 40 * Electrical Engineering Department 41 * Columbia University, New York City 42 */ 43 44 /* 45 * The KLSI USB to ethernet adapter chip contains an USB serial interface, 46 * ethernet MAC and embedded microcontroller (called the QT Engine). 47 * The chip must have firmware loaded into it before it will operate. 48 * Packets are passed between the chip and host via bulk transfers. 49 * There is an interrupt endpoint mentioned in the software spec, however 50 * it's currently unused. This device is 10Mbps half-duplex only, hence 51 * there is no media selection logic. The MAC supports a 128 entry 52 * multicast filter, though the exact size of the filter can depend 53 * on the firmware. Curiously, while the software spec describes various 54 * ethernet statistics counters, my sample adapter and firmware combination 55 * claims not to support any statistics counters at all. 56 * 57 * Note that once we load the firmware in the device, we have to be 58 * careful not to load it again: if you restart your computer but 59 * leave the adapter attached to the USB controller, it may remain 60 * powered on and retain its firmware. In this case, we don't need 61 * to load the firmware a second time. 62 * 63 * Special thanks to Rob Furr for providing an ADS Technologies 64 * adapter for development and testing. No monkeys were harmed during 65 * the development of this driver. 66 */ 67 68 /* 69 * Ported to NetBSD and somewhat rewritten by Lennart Augustsson. 70 */ 71 72 #include <sys/cdefs.h> 73 __KERNEL_RCSID(0, "$NetBSD: if_kue.c,v 1.69 2010/04/05 07:21:48 joerg Exp $"); 74 75 #if defined(__NetBSD__) 76 #include "opt_inet.h" 77 #include "rnd.h" 78 #elif defined(__OpenBSD__) 79 #include "bpfilter.h" 80 #endif 81 82 #include <sys/param.h> 83 #include <sys/systm.h> 84 #include <sys/sockio.h> 85 #include <sys/mbuf.h> 86 #include <sys/malloc.h> 87 #include <sys/kernel.h> 88 #include <sys/socket.h> 89 #include <sys/device.h> 90 #include <sys/proc.h> 91 92 #if NRND > 0 93 #include <sys/rnd.h> 94 #endif 95 96 #include <net/if.h> 97 #if defined(__NetBSD__) 98 #include <net/if_arp.h> 99 #endif 100 #include <net/if_dl.h> 101 102 #include <net/bpf.h> 103 104 #if defined(__NetBSD__) 105 #include <net/if_ether.h> 106 #ifdef INET 107 #include <netinet/in.h> 108 #include <netinet/if_inarp.h> 109 #endif 110 #endif /* defined (__NetBSD__) */ 111 112 #if defined(__OpenBSD__) 113 #ifdef INET 114 #include <netinet/in.h> 115 #include <netinet/in_systm.h> 116 #include <netinet/in_var.h> 117 #include <netinet/ip.h> 118 #include <netinet/if_ether.h> 119 #endif 120 #endif /* defined (__OpenBSD__) */ 121 122 123 #include <dev/usb/usb.h> 124 #include <dev/usb/usbdi.h> 125 #include <dev/usb/usbdi_util.h> 126 #include <dev/usb/usbdevs.h> 127 128 #include <dev/usb/if_kuereg.h> 129 #include <dev/usb/kue_fw.h> 130 131 #ifdef KUE_DEBUG 132 #define DPRINTF(x) if (kuedebug) logprintf x 133 #define DPRINTFN(n,x) if (kuedebug >= (n)) logprintf x 134 int kuedebug = 0; 135 #else 136 #define DPRINTF(x) 137 #define DPRINTFN(n,x) 138 #endif 139 140 /* 141 * Various supported device vendors/products. 142 */ 143 Static const struct usb_devno kue_devs[] = { 144 { USB_VENDOR_3COM, USB_PRODUCT_3COM_3C19250 }, 145 { USB_VENDOR_3COM, USB_PRODUCT_3COM_3C460 }, 146 { USB_VENDOR_ABOCOM, USB_PRODUCT_ABOCOM_URE450 }, 147 { USB_VENDOR_ADS, USB_PRODUCT_ADS_UBS10BT }, 148 { USB_VENDOR_ADS, USB_PRODUCT_ADS_UBS10BTX }, 149 { USB_VENDOR_AOX, USB_PRODUCT_AOX_USB101 }, 150 { USB_VENDOR_ASANTE, USB_PRODUCT_ASANTE_EA }, 151 { USB_VENDOR_ATEN, USB_PRODUCT_ATEN_UC10T }, 152 { USB_VENDOR_ATEN, USB_PRODUCT_ATEN_DSB650C }, 153 { USB_VENDOR_COREGA, USB_PRODUCT_COREGA_ETHER_USB_T }, 154 { USB_VENDOR_DLINK, USB_PRODUCT_DLINK_DSB650C }, 155 { USB_VENDOR_ENTREGA, USB_PRODUCT_ENTREGA_E45 }, 156 { USB_VENDOR_ENTREGA, USB_PRODUCT_ENTREGA_XX1 }, 157 { USB_VENDOR_ENTREGA, USB_PRODUCT_ENTREGA_XX2 }, 158 { USB_VENDOR_IODATA, USB_PRODUCT_IODATA_USBETT }, 159 { USB_VENDOR_JATON, USB_PRODUCT_JATON_EDA }, 160 { USB_VENDOR_KINGSTON, USB_PRODUCT_KINGSTON_XX1 }, 161 { USB_VENDOR_KLSI, USB_PRODUCT_KLSI_DUH3E10BT }, 162 { USB_VENDOR_KLSI, USB_PRODUCT_KLSI_DUH3E10BTN }, 163 { USB_VENDOR_LINKSYS, USB_PRODUCT_LINKSYS_USB10T }, 164 { USB_VENDOR_MOBILITY, USB_PRODUCT_MOBILITY_EA }, 165 { USB_VENDOR_NETGEAR, USB_PRODUCT_NETGEAR_EA101 }, 166 { USB_VENDOR_NETGEAR, USB_PRODUCT_NETGEAR_EA101X }, 167 { USB_VENDOR_PERACOM, USB_PRODUCT_PERACOM_ENET }, 168 { USB_VENDOR_PERACOM, USB_PRODUCT_PERACOM_ENET2 }, 169 { USB_VENDOR_PERACOM, USB_PRODUCT_PERACOM_ENET3 }, 170 { USB_VENDOR_PORTGEAR, USB_PRODUCT_PORTGEAR_EA8 }, 171 { USB_VENDOR_PORTGEAR, USB_PRODUCT_PORTGEAR_EA9 }, 172 { USB_VENDOR_PORTSMITH, USB_PRODUCT_PORTSMITH_EEA }, 173 { USB_VENDOR_SHARK, USB_PRODUCT_SHARK_PA }, 174 { USB_VENDOR_SILICOM, USB_PRODUCT_SILICOM_U2E }, 175 { USB_VENDOR_SMC, USB_PRODUCT_SMC_2102USB }, 176 }; 177 #define kue_lookup(v, p) (usb_lookup(kue_devs, v, p)) 178 179 USB_DECLARE_DRIVER(kue); 180 181 Static int kue_tx_list_init(struct kue_softc *); 182 Static int kue_rx_list_init(struct kue_softc *); 183 Static int kue_newbuf(struct kue_softc *, struct kue_chain *,struct mbuf *); 184 Static int kue_send(struct kue_softc *, struct mbuf *, int); 185 Static int kue_open_pipes(struct kue_softc *); 186 Static void kue_rxeof(usbd_xfer_handle, usbd_private_handle, usbd_status); 187 Static void kue_txeof(usbd_xfer_handle, usbd_private_handle, usbd_status); 188 Static void kue_start(struct ifnet *); 189 Static int kue_ioctl(struct ifnet *, u_long, void *); 190 Static void kue_init(void *); 191 Static void kue_stop(struct kue_softc *); 192 Static void kue_watchdog(struct ifnet *); 193 194 Static void kue_setmulti(struct kue_softc *); 195 Static void kue_reset(struct kue_softc *); 196 197 Static usbd_status kue_ctl(struct kue_softc *, int, u_int8_t, 198 u_int16_t, void *, u_int32_t); 199 Static usbd_status kue_setword(struct kue_softc *, u_int8_t, u_int16_t); 200 Static int kue_load_fw(struct kue_softc *); 201 202 Static usbd_status 203 kue_setword(struct kue_softc *sc, u_int8_t breq, u_int16_t word) 204 { 205 usb_device_request_t req; 206 207 DPRINTFN(10,("%s: %s: enter\n", USBDEVNAME(sc->kue_dev),__func__)); 208 209 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 210 req.bRequest = breq; 211 USETW(req.wValue, word); 212 USETW(req.wIndex, 0); 213 USETW(req.wLength, 0); 214 215 return (usbd_do_request(sc->kue_udev, &req, NULL)); 216 } 217 218 Static usbd_status 219 kue_ctl(struct kue_softc *sc, int rw, u_int8_t breq, u_int16_t val, 220 void *data, u_int32_t len) 221 { 222 usb_device_request_t req; 223 224 DPRINTFN(10,("%s: %s: enter, len=%d\n", USBDEVNAME(sc->kue_dev), 225 __func__, len)); 226 227 if (rw == KUE_CTL_WRITE) 228 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 229 else 230 req.bmRequestType = UT_READ_VENDOR_DEVICE; 231 232 req.bRequest = breq; 233 USETW(req.wValue, val); 234 USETW(req.wIndex, 0); 235 USETW(req.wLength, len); 236 237 return (usbd_do_request(sc->kue_udev, &req, data)); 238 } 239 240 Static int 241 kue_load_fw(struct kue_softc *sc) 242 { 243 usb_device_descriptor_t dd; 244 usbd_status err; 245 246 DPRINTFN(1,("%s: %s: enter\n", USBDEVNAME(sc->kue_dev), __func__)); 247 248 /* 249 * First, check if we even need to load the firmware. 250 * If the device was still attached when the system was 251 * rebooted, it may already have firmware loaded in it. 252 * If this is the case, we don't need to do it again. 253 * And in fact, if we try to load it again, we'll hang, 254 * so we have to avoid this condition if we don't want 255 * to look stupid. 256 * 257 * We can test this quickly by checking the bcdRevision 258 * code. The NIC will return a different revision code if 259 * it's probed while the firmware is still loaded and 260 * running. 261 */ 262 if (usbd_get_device_desc(sc->kue_udev, &dd)) 263 return (EIO); 264 if (UGETW(dd.bcdDevice) == KUE_WARM_REV) { 265 printf("%s: warm boot, no firmware download\n", 266 USBDEVNAME(sc->kue_dev)); 267 return (0); 268 } 269 270 printf("%s: cold boot, downloading firmware\n", 271 USBDEVNAME(sc->kue_dev)); 272 273 /* Load code segment */ 274 DPRINTFN(1,("%s: kue_load_fw: download code_seg\n", 275 USBDEVNAME(sc->kue_dev))); 276 /*XXXUNCONST*/ 277 err = kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SEND_SCAN, 278 0, __UNCONST(kue_code_seg), sizeof(kue_code_seg)); 279 if (err) { 280 printf("%s: failed to load code segment: %s\n", 281 USBDEVNAME(sc->kue_dev), usbd_errstr(err)); 282 return (EIO); 283 } 284 285 /* Load fixup segment */ 286 DPRINTFN(1,("%s: kue_load_fw: download fix_seg\n", 287 USBDEVNAME(sc->kue_dev))); 288 /*XXXUNCONST*/ 289 err = kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SEND_SCAN, 290 0, __UNCONST(kue_fix_seg), sizeof(kue_fix_seg)); 291 if (err) { 292 printf("%s: failed to load fixup segment: %s\n", 293 USBDEVNAME(sc->kue_dev), usbd_errstr(err)); 294 return (EIO); 295 } 296 297 /* Send trigger command. */ 298 DPRINTFN(1,("%s: kue_load_fw: download trig_seg\n", 299 USBDEVNAME(sc->kue_dev))); 300 /*XXXUNCONST*/ 301 err = kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SEND_SCAN, 302 0, __UNCONST(kue_trig_seg), sizeof(kue_trig_seg)); 303 if (err) { 304 printf("%s: failed to load trigger segment: %s\n", 305 USBDEVNAME(sc->kue_dev), usbd_errstr(err)); 306 return (EIO); 307 } 308 309 usbd_delay_ms(sc->kue_udev, 10); 310 311 /* 312 * Reload device descriptor. 313 * Why? The chip without the firmware loaded returns 314 * one revision code. The chip with the firmware 315 * loaded and running returns a *different* revision 316 * code. This confuses the quirk mechanism, which is 317 * dependent on the revision data. 318 */ 319 (void)usbd_reload_device_desc(sc->kue_udev); 320 321 DPRINTFN(1,("%s: %s: done\n", USBDEVNAME(sc->kue_dev), __func__)); 322 323 /* Reset the adapter. */ 324 kue_reset(sc); 325 326 return (0); 327 } 328 329 Static void 330 kue_setmulti(struct kue_softc *sc) 331 { 332 struct ifnet *ifp = GET_IFP(sc); 333 struct ether_multi *enm; 334 struct ether_multistep step; 335 int i; 336 337 DPRINTFN(5,("%s: %s: enter\n", USBDEVNAME(sc->kue_dev), __func__)); 338 339 if (ifp->if_flags & IFF_PROMISC) { 340 allmulti: 341 ifp->if_flags |= IFF_ALLMULTI; 342 sc->kue_rxfilt |= KUE_RXFILT_ALLMULTI; 343 sc->kue_rxfilt &= ~KUE_RXFILT_MULTICAST; 344 kue_setword(sc, KUE_CMD_SET_PKT_FILTER, sc->kue_rxfilt); 345 return; 346 } 347 348 sc->kue_rxfilt &= ~KUE_RXFILT_ALLMULTI; 349 350 i = 0; 351 #if defined (__NetBSD__) 352 ETHER_FIRST_MULTI(step, &sc->kue_ec, enm); 353 #else 354 ETHER_FIRST_MULTI(step, &sc->arpcom, enm); 355 #endif 356 while (enm != NULL) { 357 if (i == KUE_MCFILTCNT(sc) || 358 memcmp(enm->enm_addrlo, enm->enm_addrhi, 359 ETHER_ADDR_LEN) != 0) 360 goto allmulti; 361 362 memcpy(KUE_MCFILT(sc, i), enm->enm_addrlo, ETHER_ADDR_LEN); 363 ETHER_NEXT_MULTI(step, enm); 364 i++; 365 } 366 367 ifp->if_flags &= ~IFF_ALLMULTI; 368 369 sc->kue_rxfilt |= KUE_RXFILT_MULTICAST; 370 kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SET_MCAST_FILTERS, 371 i, sc->kue_mcfilters, i * ETHER_ADDR_LEN); 372 373 kue_setword(sc, KUE_CMD_SET_PKT_FILTER, sc->kue_rxfilt); 374 } 375 376 /* 377 * Issue a SET_CONFIGURATION command to reset the MAC. This should be 378 * done after the firmware is loaded into the adapter in order to 379 * bring it into proper operation. 380 */ 381 Static void 382 kue_reset(struct kue_softc *sc) 383 { 384 DPRINTFN(5,("%s: %s: enter\n", USBDEVNAME(sc->kue_dev), __func__)); 385 386 if (usbd_set_config_no(sc->kue_udev, KUE_CONFIG_NO, 1) || 387 usbd_device2interface_handle(sc->kue_udev, KUE_IFACE_IDX, 388 &sc->kue_iface)) 389 printf("%s: reset failed\n", USBDEVNAME(sc->kue_dev)); 390 391 /* Wait a little while for the chip to get its brains in order. */ 392 usbd_delay_ms(sc->kue_udev, 10); 393 } 394 395 /* 396 * Probe for a KLSI chip. 397 */ 398 USB_MATCH(kue) 399 { 400 USB_MATCH_START(kue, uaa); 401 402 DPRINTFN(25,("kue_match: enter\n")); 403 404 return (kue_lookup(uaa->vendor, uaa->product) != NULL ? 405 UMATCH_VENDOR_PRODUCT : UMATCH_NONE); 406 } 407 408 /* 409 * Attach the interface. Allocate softc structures, do 410 * setup and ethernet/BPF attach. 411 */ 412 USB_ATTACH(kue) 413 { 414 USB_ATTACH_START(kue, sc, uaa); 415 char *devinfop; 416 int s; 417 struct ifnet *ifp; 418 usbd_device_handle dev = uaa->device; 419 usbd_interface_handle iface; 420 usbd_status err; 421 usb_interface_descriptor_t *id; 422 usb_endpoint_descriptor_t *ed; 423 int i; 424 425 DPRINTFN(5,(" : kue_attach: sc=%p, dev=%p", sc, dev)); 426 427 sc->kue_dev = self; 428 429 aprint_naive("\n"); 430 aprint_normal("\n"); 431 432 devinfop = usbd_devinfo_alloc(dev, 0); 433 aprint_normal_dev(self, "%s\n", devinfop); 434 usbd_devinfo_free(devinfop); 435 436 err = usbd_set_config_no(dev, KUE_CONFIG_NO, 1); 437 if (err) { 438 aprint_error_dev(self, " setting config no failed\n"); 439 USB_ATTACH_ERROR_RETURN; 440 } 441 442 sc->kue_udev = dev; 443 sc->kue_product = uaa->product; 444 sc->kue_vendor = uaa->vendor; 445 446 /* Load the firmware into the NIC. */ 447 if (kue_load_fw(sc)) { 448 aprint_error_dev(self, "loading firmware failed\n"); 449 USB_ATTACH_ERROR_RETURN; 450 } 451 452 err = usbd_device2interface_handle(dev, KUE_IFACE_IDX, &iface); 453 if (err) { 454 aprint_error_dev(self, "getting interface handle failed\n"); 455 USB_ATTACH_ERROR_RETURN; 456 } 457 458 sc->kue_iface = iface; 459 id = usbd_get_interface_descriptor(iface); 460 461 /* Find endpoints. */ 462 for (i = 0; i < id->bNumEndpoints; i++) { 463 ed = usbd_interface2endpoint_descriptor(iface, i); 464 if (ed == NULL) { 465 aprint_error_dev(self, "couldn't get ep %d\n", i); 466 USB_ATTACH_ERROR_RETURN; 467 } 468 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 469 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 470 sc->kue_ed[KUE_ENDPT_RX] = ed->bEndpointAddress; 471 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 472 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 473 sc->kue_ed[KUE_ENDPT_TX] = ed->bEndpointAddress; 474 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 475 UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) { 476 sc->kue_ed[KUE_ENDPT_INTR] = ed->bEndpointAddress; 477 } 478 } 479 480 if (sc->kue_ed[KUE_ENDPT_RX] == 0 || sc->kue_ed[KUE_ENDPT_TX] == 0) { 481 aprint_error_dev(self, "missing endpoint\n"); 482 USB_ATTACH_ERROR_RETURN; 483 } 484 485 /* Read ethernet descriptor */ 486 err = kue_ctl(sc, KUE_CTL_READ, KUE_CMD_GET_ETHER_DESCRIPTOR, 487 0, &sc->kue_desc, sizeof(sc->kue_desc)); 488 if (err) { 489 aprint_error_dev(self, "could not read Ethernet descriptor\n"); 490 USB_ATTACH_ERROR_RETURN; 491 } 492 493 sc->kue_mcfilters = malloc(KUE_MCFILTCNT(sc) * ETHER_ADDR_LEN, 494 M_USBDEV, M_NOWAIT); 495 if (sc->kue_mcfilters == NULL) { 496 aprint_error_dev(self, 497 "no memory for multicast filter buffer\n"); 498 USB_ATTACH_ERROR_RETURN; 499 } 500 501 s = splnet(); 502 503 /* 504 * A KLSI chip was detected. Inform the world. 505 */ 506 aprint_normal_dev(self, "Ethernet address %s\n", 507 ether_sprintf(sc->kue_desc.kue_macaddr)); 508 509 /* Initialize interface info.*/ 510 ifp = GET_IFP(sc); 511 ifp->if_softc = sc; 512 ifp->if_mtu = ETHERMTU; 513 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 514 ifp->if_ioctl = kue_ioctl; 515 ifp->if_start = kue_start; 516 ifp->if_watchdog = kue_watchdog; 517 #if defined(__OpenBSD__) 518 ifp->if_snd.ifq_maxlen = IFQ_MAXLEN; 519 #endif 520 strncpy(ifp->if_xname, USBDEVNAME(sc->kue_dev), IFNAMSIZ); 521 522 IFQ_SET_READY(&ifp->if_snd); 523 524 /* Attach the interface. */ 525 if_attach(ifp); 526 Ether_ifattach(ifp, sc->kue_desc.kue_macaddr); 527 #if NRND > 0 528 rnd_attach_source(&sc->rnd_source, USBDEVNAME(sc->kue_dev), 529 RND_TYPE_NET, 0); 530 #endif 531 532 sc->kue_attached = 1; 533 splx(s); 534 535 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->kue_udev, 536 USBDEV(sc->kue_dev)); 537 538 USB_ATTACH_SUCCESS_RETURN; 539 } 540 541 USB_DETACH(kue) 542 { 543 USB_DETACH_START(kue, sc); 544 struct ifnet *ifp = GET_IFP(sc); 545 int s; 546 547 s = splusb(); /* XXX why? */ 548 549 if (sc->kue_mcfilters != NULL) { 550 free(sc->kue_mcfilters, M_USBDEV); 551 sc->kue_mcfilters = NULL; 552 } 553 554 if (!sc->kue_attached) { 555 /* Detached before attached finished, so just bail out. */ 556 splx(s); 557 return (0); 558 } 559 560 if (ifp->if_flags & IFF_RUNNING) 561 kue_stop(sc); 562 563 #if defined(__NetBSD__) 564 #if NRND > 0 565 rnd_detach_source(&sc->rnd_source); 566 #endif 567 ether_ifdetach(ifp); 568 #endif /* __NetBSD__ */ 569 570 if_detach(ifp); 571 572 #ifdef DIAGNOSTIC 573 if (sc->kue_ep[KUE_ENDPT_TX] != NULL || 574 sc->kue_ep[KUE_ENDPT_RX] != NULL || 575 sc->kue_ep[KUE_ENDPT_INTR] != NULL) 576 aprint_debug_dev(self, "detach has active endpoints\n"); 577 #endif 578 579 sc->kue_attached = 0; 580 splx(s); 581 582 return (0); 583 } 584 585 int 586 kue_activate(device_ptr_t self, enum devact act) 587 { 588 struct kue_softc *sc = device_private(self); 589 590 DPRINTFN(2,("%s: %s: enter\n", USBDEVNAME(sc->kue_dev), __func__)); 591 592 switch (act) { 593 case DVACT_DEACTIVATE: 594 /* Deactivate the interface. */ 595 if_deactivate(&sc->kue_ec.ec_if); 596 sc->kue_dying = 1; 597 return 0; 598 default: 599 return EOPNOTSUPP; 600 } 601 } 602 603 /* 604 * Initialize an RX descriptor and attach an MBUF cluster. 605 */ 606 Static int 607 kue_newbuf(struct kue_softc *sc, struct kue_chain *c, struct mbuf *m) 608 { 609 struct mbuf *m_new = NULL; 610 611 DPRINTFN(10,("%s: %s: enter\n", USBDEVNAME(sc->kue_dev),__func__)); 612 613 if (m == NULL) { 614 MGETHDR(m_new, M_DONTWAIT, MT_DATA); 615 if (m_new == NULL) { 616 printf("%s: no memory for rx list " 617 "-- packet dropped!\n", USBDEVNAME(sc->kue_dev)); 618 return (ENOBUFS); 619 } 620 621 MCLGET(m_new, M_DONTWAIT); 622 if (!(m_new->m_flags & M_EXT)) { 623 printf("%s: no memory for rx list " 624 "-- packet dropped!\n", USBDEVNAME(sc->kue_dev)); 625 m_freem(m_new); 626 return (ENOBUFS); 627 } 628 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; 629 } else { 630 m_new = m; 631 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; 632 m_new->m_data = m_new->m_ext.ext_buf; 633 } 634 635 c->kue_mbuf = m_new; 636 637 return (0); 638 } 639 640 Static int 641 kue_rx_list_init(struct kue_softc *sc) 642 { 643 struct kue_cdata *cd; 644 struct kue_chain *c; 645 int i; 646 647 DPRINTFN(5,("%s: %s: enter\n", USBDEVNAME(sc->kue_dev), __func__)); 648 649 cd = &sc->kue_cdata; 650 for (i = 0; i < KUE_RX_LIST_CNT; i++) { 651 c = &cd->kue_rx_chain[i]; 652 c->kue_sc = sc; 653 c->kue_idx = i; 654 if (kue_newbuf(sc, c, NULL) == ENOBUFS) 655 return (ENOBUFS); 656 if (c->kue_xfer == NULL) { 657 c->kue_xfer = usbd_alloc_xfer(sc->kue_udev); 658 if (c->kue_xfer == NULL) 659 return (ENOBUFS); 660 c->kue_buf = usbd_alloc_buffer(c->kue_xfer, KUE_BUFSZ); 661 if (c->kue_buf == NULL) 662 return (ENOBUFS); /* XXX free xfer */ 663 } 664 } 665 666 return (0); 667 } 668 669 Static int 670 kue_tx_list_init(struct kue_softc *sc) 671 { 672 struct kue_cdata *cd; 673 struct kue_chain *c; 674 int i; 675 676 DPRINTFN(5,("%s: %s: enter\n", USBDEVNAME(sc->kue_dev), __func__)); 677 678 cd = &sc->kue_cdata; 679 for (i = 0; i < KUE_TX_LIST_CNT; i++) { 680 c = &cd->kue_tx_chain[i]; 681 c->kue_sc = sc; 682 c->kue_idx = i; 683 c->kue_mbuf = NULL; 684 if (c->kue_xfer == NULL) { 685 c->kue_xfer = usbd_alloc_xfer(sc->kue_udev); 686 if (c->kue_xfer == NULL) 687 return (ENOBUFS); 688 c->kue_buf = usbd_alloc_buffer(c->kue_xfer, KUE_BUFSZ); 689 if (c->kue_buf == NULL) 690 return (ENOBUFS); 691 } 692 } 693 694 return (0); 695 } 696 697 /* 698 * A frame has been uploaded: pass the resulting mbuf chain up to 699 * the higher level protocols. 700 */ 701 Static void 702 kue_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 703 { 704 struct kue_chain *c = priv; 705 struct kue_softc *sc = c->kue_sc; 706 struct ifnet *ifp = GET_IFP(sc); 707 struct mbuf *m; 708 int total_len = 0; 709 int s; 710 711 DPRINTFN(10,("%s: %s: enter status=%d\n", USBDEVNAME(sc->kue_dev), 712 __func__, status)); 713 714 if (sc->kue_dying) 715 return; 716 717 if (!(ifp->if_flags & IFF_RUNNING)) 718 return; 719 720 if (status != USBD_NORMAL_COMPLETION) { 721 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 722 return; 723 sc->kue_rx_errs++; 724 if (usbd_ratecheck(&sc->kue_rx_notice)) { 725 printf("%s: %u usb errors on rx: %s\n", 726 USBDEVNAME(sc->kue_dev), sc->kue_rx_errs, 727 usbd_errstr(status)); 728 sc->kue_rx_errs = 0; 729 } 730 if (status == USBD_STALLED) 731 usbd_clear_endpoint_stall_async(sc->kue_ep[KUE_ENDPT_RX]); 732 goto done; 733 } 734 735 usbd_get_xfer_status(xfer, NULL, NULL, &total_len, NULL); 736 737 DPRINTFN(10,("%s: %s: total_len=%d len=%d\n", USBDEVNAME(sc->kue_dev), 738 __func__, total_len, 739 UGETW(mtod(c->kue_mbuf, u_int8_t *)))); 740 741 if (total_len <= 1) 742 goto done; 743 744 m = c->kue_mbuf; 745 /* copy data to mbuf */ 746 memcpy(mtod(m, char *), c->kue_buf, total_len); 747 748 /* No errors; receive the packet. */ 749 total_len = UGETW(mtod(m, u_int8_t *)); 750 m_adj(m, sizeof(u_int16_t)); 751 752 if (total_len < sizeof(struct ether_header)) { 753 ifp->if_ierrors++; 754 goto done; 755 } 756 757 ifp->if_ipackets++; 758 m->m_pkthdr.len = m->m_len = total_len; 759 760 m->m_pkthdr.rcvif = ifp; 761 762 s = splnet(); 763 764 /* XXX ugly */ 765 if (kue_newbuf(sc, c, NULL) == ENOBUFS) { 766 ifp->if_ierrors++; 767 goto done1; 768 } 769 770 /* 771 * Handle BPF listeners. Let the BPF user see the packet, but 772 * don't pass it up to the ether_input() layer unless it's 773 * a broadcast packet, multicast packet, matches our ethernet 774 * address or the interface is in promiscuous mode. 775 */ 776 bpf_mtap(ifp, m); 777 778 DPRINTFN(10,("%s: %s: deliver %d\n", USBDEVNAME(sc->kue_dev), 779 __func__, m->m_len)); 780 IF_INPUT(ifp, m); 781 done1: 782 splx(s); 783 784 done: 785 786 /* Setup new transfer. */ 787 usbd_setup_xfer(c->kue_xfer, sc->kue_ep[KUE_ENDPT_RX], 788 c, c->kue_buf, KUE_BUFSZ, USBD_SHORT_XFER_OK | USBD_NO_COPY, 789 USBD_NO_TIMEOUT, kue_rxeof); 790 usbd_transfer(c->kue_xfer); 791 792 DPRINTFN(10,("%s: %s: start rx\n", USBDEVNAME(sc->kue_dev), 793 __func__)); 794 } 795 796 /* 797 * A frame was downloaded to the chip. It's safe for us to clean up 798 * the list buffers. 799 */ 800 801 Static void 802 kue_txeof(usbd_xfer_handle xfer, usbd_private_handle priv, 803 usbd_status status) 804 { 805 struct kue_chain *c = priv; 806 struct kue_softc *sc = c->kue_sc; 807 struct ifnet *ifp = GET_IFP(sc); 808 int s; 809 810 if (sc->kue_dying) 811 return; 812 813 s = splnet(); 814 815 DPRINTFN(10,("%s: %s: enter status=%d\n", USBDEVNAME(sc->kue_dev), 816 __func__, status)); 817 818 ifp->if_timer = 0; 819 ifp->if_flags &= ~IFF_OACTIVE; 820 821 if (status != USBD_NORMAL_COMPLETION) { 822 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) { 823 splx(s); 824 return; 825 } 826 ifp->if_oerrors++; 827 printf("%s: usb error on tx: %s\n", USBDEVNAME(sc->kue_dev), 828 usbd_errstr(status)); 829 if (status == USBD_STALLED) 830 usbd_clear_endpoint_stall_async(sc->kue_ep[KUE_ENDPT_TX]); 831 splx(s); 832 return; 833 } 834 835 ifp->if_opackets++; 836 837 m_freem(c->kue_mbuf); 838 c->kue_mbuf = NULL; 839 840 if (IFQ_IS_EMPTY(&ifp->if_snd) == 0) 841 kue_start(ifp); 842 843 splx(s); 844 } 845 846 Static int 847 kue_send(struct kue_softc *sc, struct mbuf *m, int idx) 848 { 849 int total_len; 850 struct kue_chain *c; 851 usbd_status err; 852 853 DPRINTFN(10,("%s: %s: enter\n", USBDEVNAME(sc->kue_dev),__func__)); 854 855 c = &sc->kue_cdata.kue_tx_chain[idx]; 856 857 /* 858 * Copy the mbuf data into a contiguous buffer, leaving two 859 * bytes at the beginning to hold the frame length. 860 */ 861 m_copydata(m, 0, m->m_pkthdr.len, c->kue_buf + 2); 862 c->kue_mbuf = m; 863 864 total_len = m->m_pkthdr.len + 2; 865 /* XXX what's this? */ 866 total_len += 64 - (total_len % 64); 867 868 /* Frame length is specified in the first 2 bytes of the buffer. */ 869 c->kue_buf[0] = (u_int8_t)m->m_pkthdr.len; 870 c->kue_buf[1] = (u_int8_t)(m->m_pkthdr.len >> 8); 871 872 usbd_setup_xfer(c->kue_xfer, sc->kue_ep[KUE_ENDPT_TX], 873 c, c->kue_buf, total_len, USBD_NO_COPY, USBD_DEFAULT_TIMEOUT, 874 kue_txeof); 875 876 /* Transmit */ 877 err = usbd_transfer(c->kue_xfer); 878 if (err != USBD_IN_PROGRESS) { 879 printf("%s: kue_send error=%s\n", USBDEVNAME(sc->kue_dev), 880 usbd_errstr(err)); 881 kue_stop(sc); 882 return (EIO); 883 } 884 885 sc->kue_cdata.kue_tx_cnt++; 886 887 return (0); 888 } 889 890 Static void 891 kue_start(struct ifnet *ifp) 892 { 893 struct kue_softc *sc = ifp->if_softc; 894 struct mbuf *m_head = NULL; 895 896 DPRINTFN(10,("%s: %s: enter\n", USBDEVNAME(sc->kue_dev),__func__)); 897 898 if (sc->kue_dying) 899 return; 900 901 if (ifp->if_flags & IFF_OACTIVE) 902 return; 903 904 IFQ_POLL(&ifp->if_snd, m_head); 905 if (m_head == NULL) 906 return; 907 908 if (kue_send(sc, m_head, 0)) { 909 ifp->if_flags |= IFF_OACTIVE; 910 return; 911 } 912 913 IFQ_DEQUEUE(&ifp->if_snd, m_head); 914 915 /* 916 * If there's a BPF listener, bounce a copy of this frame 917 * to him. 918 */ 919 bpf_mtap(ifp, m_head); 920 921 ifp->if_flags |= IFF_OACTIVE; 922 923 /* 924 * Set a timeout in case the chip goes out to lunch. 925 */ 926 ifp->if_timer = 6; 927 } 928 929 Static void 930 kue_init(void *xsc) 931 { 932 struct kue_softc *sc = xsc; 933 struct ifnet *ifp = GET_IFP(sc); 934 int s; 935 u_char eaddr[ETHER_ADDR_LEN]; 936 937 DPRINTFN(5,("%s: %s: enter\n", USBDEVNAME(sc->kue_dev),__func__)); 938 939 if (ifp->if_flags & IFF_RUNNING) 940 return; 941 942 s = splnet(); 943 944 memcpy(eaddr, CLLADDR(ifp->if_sadl), sizeof(eaddr)); 945 /* Set MAC address */ 946 kue_ctl(sc, KUE_CTL_WRITE, KUE_CMD_SET_MAC, 0, eaddr, ETHER_ADDR_LEN); 947 948 sc->kue_rxfilt = KUE_RXFILT_UNICAST | KUE_RXFILT_BROADCAST; 949 950 /* If we want promiscuous mode, set the allframes bit. */ 951 if (ifp->if_flags & IFF_PROMISC) 952 sc->kue_rxfilt |= KUE_RXFILT_PROMISC; 953 954 kue_setword(sc, KUE_CMD_SET_PKT_FILTER, sc->kue_rxfilt); 955 956 /* I'm not sure how to tune these. */ 957 #if 0 958 /* 959 * Leave this one alone for now; setting it 960 * wrong causes lockups on some machines/controllers. 961 */ 962 kue_setword(sc, KUE_CMD_SET_SOFS, 1); 963 #endif 964 kue_setword(sc, KUE_CMD_SET_URB_SIZE, 64); 965 966 /* Init TX ring. */ 967 if (kue_tx_list_init(sc) == ENOBUFS) { 968 printf("%s: tx list init failed\n", USBDEVNAME(sc->kue_dev)); 969 splx(s); 970 return; 971 } 972 973 /* Init RX ring. */ 974 if (kue_rx_list_init(sc) == ENOBUFS) { 975 printf("%s: rx list init failed\n", USBDEVNAME(sc->kue_dev)); 976 splx(s); 977 return; 978 } 979 980 /* Load the multicast filter. */ 981 kue_setmulti(sc); 982 983 if (sc->kue_ep[KUE_ENDPT_RX] == NULL) { 984 if (kue_open_pipes(sc)) { 985 splx(s); 986 return; 987 } 988 } 989 990 ifp->if_flags |= IFF_RUNNING; 991 ifp->if_flags &= ~IFF_OACTIVE; 992 993 splx(s); 994 } 995 996 Static int 997 kue_open_pipes(struct kue_softc *sc) 998 { 999 usbd_status err; 1000 struct kue_chain *c; 1001 int i; 1002 1003 DPRINTFN(5,("%s: %s: enter\n", USBDEVNAME(sc->kue_dev),__func__)); 1004 1005 /* Open RX and TX pipes. */ 1006 err = usbd_open_pipe(sc->kue_iface, sc->kue_ed[KUE_ENDPT_RX], 1007 USBD_EXCLUSIVE_USE, &sc->kue_ep[KUE_ENDPT_RX]); 1008 if (err) { 1009 printf("%s: open rx pipe failed: %s\n", 1010 USBDEVNAME(sc->kue_dev), usbd_errstr(err)); 1011 return (EIO); 1012 } 1013 1014 err = usbd_open_pipe(sc->kue_iface, sc->kue_ed[KUE_ENDPT_TX], 1015 USBD_EXCLUSIVE_USE, &sc->kue_ep[KUE_ENDPT_TX]); 1016 if (err) { 1017 printf("%s: open tx pipe failed: %s\n", 1018 USBDEVNAME(sc->kue_dev), usbd_errstr(err)); 1019 return (EIO); 1020 } 1021 1022 /* Start up the receive pipe. */ 1023 for (i = 0; i < KUE_RX_LIST_CNT; i++) { 1024 c = &sc->kue_cdata.kue_rx_chain[i]; 1025 usbd_setup_xfer(c->kue_xfer, sc->kue_ep[KUE_ENDPT_RX], 1026 c, c->kue_buf, KUE_BUFSZ, 1027 USBD_SHORT_XFER_OK | USBD_NO_COPY, USBD_NO_TIMEOUT, 1028 kue_rxeof); 1029 DPRINTFN(5,("%s: %s: start read\n", USBDEVNAME(sc->kue_dev), 1030 __func__)); 1031 usbd_transfer(c->kue_xfer); 1032 } 1033 1034 return (0); 1035 } 1036 1037 Static int 1038 kue_ioctl(struct ifnet *ifp, u_long command, void *data) 1039 { 1040 struct kue_softc *sc = ifp->if_softc; 1041 struct ifaddr *ifa = (struct ifaddr *)data; 1042 struct ifreq *ifr = (struct ifreq *)data; 1043 int s, error = 0; 1044 1045 DPRINTFN(5,("%s: %s: enter\n", USBDEVNAME(sc->kue_dev),__func__)); 1046 1047 if (sc->kue_dying) 1048 return (EIO); 1049 1050 #ifdef DIAGNOSTIC 1051 if (!curproc) { 1052 printf("%s: no proc!!\n", USBDEVNAME(sc->kue_dev)); 1053 return EIO; 1054 } 1055 #endif 1056 1057 s = splnet(); 1058 1059 switch(command) { 1060 case SIOCINITIFADDR: 1061 ifp->if_flags |= IFF_UP; 1062 kue_init(sc); 1063 1064 switch (ifa->ifa_addr->sa_family) { 1065 #ifdef INET 1066 case AF_INET: 1067 #if defined(__NetBSD__) 1068 arp_ifinit(ifp, ifa); 1069 #else 1070 arp_ifinit(&sc->arpcom, ifa); 1071 #endif 1072 break; 1073 #endif /* INET */ 1074 } 1075 break; 1076 1077 case SIOCSIFMTU: 1078 if (ifr->ifr_mtu < ETHERMIN || ifr->ifr_mtu > ETHERMTU) 1079 error = EINVAL; 1080 else if ((error = ifioctl_common(ifp, command, data)) == ENETRESET) 1081 error = 0; 1082 break; 1083 1084 case SIOCSIFFLAGS: 1085 if ((error = ifioctl_common(ifp, command, data)) != 0) 1086 break; 1087 if (ifp->if_flags & IFF_UP) { 1088 if (ifp->if_flags & IFF_RUNNING && 1089 ifp->if_flags & IFF_PROMISC && 1090 !(sc->kue_if_flags & IFF_PROMISC)) { 1091 sc->kue_rxfilt |= KUE_RXFILT_PROMISC; 1092 kue_setword(sc, KUE_CMD_SET_PKT_FILTER, 1093 sc->kue_rxfilt); 1094 } else if (ifp->if_flags & IFF_RUNNING && 1095 !(ifp->if_flags & IFF_PROMISC) && 1096 sc->kue_if_flags & IFF_PROMISC) { 1097 sc->kue_rxfilt &= ~KUE_RXFILT_PROMISC; 1098 kue_setword(sc, KUE_CMD_SET_PKT_FILTER, 1099 sc->kue_rxfilt); 1100 } else if (!(ifp->if_flags & IFF_RUNNING)) 1101 kue_init(sc); 1102 } else { 1103 if (ifp->if_flags & IFF_RUNNING) 1104 kue_stop(sc); 1105 } 1106 sc->kue_if_flags = ifp->if_flags; 1107 error = 0; 1108 break; 1109 case SIOCADDMULTI: 1110 case SIOCDELMULTI: 1111 kue_setmulti(sc); 1112 error = 0; 1113 break; 1114 default: 1115 error = ether_ioctl(ifp, command, data); 1116 break; 1117 } 1118 1119 splx(s); 1120 1121 return (error); 1122 } 1123 1124 Static void 1125 kue_watchdog(struct ifnet *ifp) 1126 { 1127 struct kue_softc *sc = ifp->if_softc; 1128 struct kue_chain *c; 1129 usbd_status stat; 1130 int s; 1131 1132 DPRINTFN(5,("%s: %s: enter\n", USBDEVNAME(sc->kue_dev),__func__)); 1133 1134 if (sc->kue_dying) 1135 return; 1136 1137 ifp->if_oerrors++; 1138 printf("%s: watchdog timeout\n", USBDEVNAME(sc->kue_dev)); 1139 1140 s = splusb(); 1141 c = &sc->kue_cdata.kue_tx_chain[0]; 1142 usbd_get_xfer_status(c->kue_xfer, NULL, NULL, NULL, &stat); 1143 kue_txeof(c->kue_xfer, c, stat); 1144 1145 if (IFQ_IS_EMPTY(&ifp->if_snd) == 0) 1146 kue_start(ifp); 1147 splx(s); 1148 } 1149 1150 /* 1151 * Stop the adapter and free any mbufs allocated to the 1152 * RX and TX lists. 1153 */ 1154 Static void 1155 kue_stop(struct kue_softc *sc) 1156 { 1157 usbd_status err; 1158 struct ifnet *ifp; 1159 int i; 1160 1161 DPRINTFN(5,("%s: %s: enter\n", USBDEVNAME(sc->kue_dev),__func__)); 1162 1163 ifp = GET_IFP(sc); 1164 ifp->if_timer = 0; 1165 1166 /* Stop transfers. */ 1167 if (sc->kue_ep[KUE_ENDPT_RX] != NULL) { 1168 err = usbd_abort_pipe(sc->kue_ep[KUE_ENDPT_RX]); 1169 if (err) { 1170 printf("%s: abort rx pipe failed: %s\n", 1171 USBDEVNAME(sc->kue_dev), usbd_errstr(err)); 1172 } 1173 err = usbd_close_pipe(sc->kue_ep[KUE_ENDPT_RX]); 1174 if (err) { 1175 printf("%s: close rx pipe failed: %s\n", 1176 USBDEVNAME(sc->kue_dev), usbd_errstr(err)); 1177 } 1178 sc->kue_ep[KUE_ENDPT_RX] = NULL; 1179 } 1180 1181 if (sc->kue_ep[KUE_ENDPT_TX] != NULL) { 1182 err = usbd_abort_pipe(sc->kue_ep[KUE_ENDPT_TX]); 1183 if (err) { 1184 printf("%s: abort tx pipe failed: %s\n", 1185 USBDEVNAME(sc->kue_dev), usbd_errstr(err)); 1186 } 1187 err = usbd_close_pipe(sc->kue_ep[KUE_ENDPT_TX]); 1188 if (err) { 1189 printf("%s: close tx pipe failed: %s\n", 1190 USBDEVNAME(sc->kue_dev), usbd_errstr(err)); 1191 } 1192 sc->kue_ep[KUE_ENDPT_TX] = NULL; 1193 } 1194 1195 if (sc->kue_ep[KUE_ENDPT_INTR] != NULL) { 1196 err = usbd_abort_pipe(sc->kue_ep[KUE_ENDPT_INTR]); 1197 if (err) { 1198 printf("%s: abort intr pipe failed: %s\n", 1199 USBDEVNAME(sc->kue_dev), usbd_errstr(err)); 1200 } 1201 err = usbd_close_pipe(sc->kue_ep[KUE_ENDPT_INTR]); 1202 if (err) { 1203 printf("%s: close intr pipe failed: %s\n", 1204 USBDEVNAME(sc->kue_dev), usbd_errstr(err)); 1205 } 1206 sc->kue_ep[KUE_ENDPT_INTR] = NULL; 1207 } 1208 1209 /* Free RX resources. */ 1210 for (i = 0; i < KUE_RX_LIST_CNT; i++) { 1211 if (sc->kue_cdata.kue_rx_chain[i].kue_mbuf != NULL) { 1212 m_freem(sc->kue_cdata.kue_rx_chain[i].kue_mbuf); 1213 sc->kue_cdata.kue_rx_chain[i].kue_mbuf = NULL; 1214 } 1215 if (sc->kue_cdata.kue_rx_chain[i].kue_xfer != NULL) { 1216 usbd_free_xfer(sc->kue_cdata.kue_rx_chain[i].kue_xfer); 1217 sc->kue_cdata.kue_rx_chain[i].kue_xfer = NULL; 1218 } 1219 } 1220 1221 /* Free TX resources. */ 1222 for (i = 0; i < KUE_TX_LIST_CNT; i++) { 1223 if (sc->kue_cdata.kue_tx_chain[i].kue_mbuf != NULL) { 1224 m_freem(sc->kue_cdata.kue_tx_chain[i].kue_mbuf); 1225 sc->kue_cdata.kue_tx_chain[i].kue_mbuf = NULL; 1226 } 1227 if (sc->kue_cdata.kue_tx_chain[i].kue_xfer != NULL) { 1228 usbd_free_xfer(sc->kue_cdata.kue_tx_chain[i].kue_xfer); 1229 sc->kue_cdata.kue_tx_chain[i].kue_xfer = NULL; 1230 } 1231 } 1232 1233 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 1234 } 1235