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|
/* $OpenBSD: if_cdce.c,v 1.42 2008/10/02 20:21:14 brad Exp $ */
/*
* Copyright (c) 1997, 1998, 1999, 2000-2003 Bill Paul <wpaul@windriver.com>
* Copyright (c) 2003 Craig Boston
* Copyright (c) 2004 Daniel Hartmeier
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Bill Paul.
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul, THE VOICES IN HIS HEAD OR
* THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* USB Communication Device Class (Ethernet Networking Control Model)
* http://www.usb.org/developers/devclass_docs/usbcdc11.pdf
*
*/
#include <bpfilter.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/sockio.h>
#include <sys/mbuf.h>
#include <sys/kernel.h>
#include <sys/socket.h>
#include <sys/device.h>
#include <sys/proc.h>
#include <net/if.h>
#include <net/if_dl.h>
#include <net/bpf.h>
#if NBPFILTER > 0
#endif
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/in_var.h>
#include <netinet/ip.h>
#include <netinet/if_ether.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdi_util.h>
#include <dev/usb/usbdevs.h>
#include <dev/usb/usbcdc.h>
#include <dev/usb/if_cdcereg.h>
#ifdef CDCE_DEBUG
#define DPRINTFN(n, x) do { if (cdcedebug > (n)) printf x; } while (0)
int cdcedebug = 0;
#else
#define DPRINTFN(n, x)
#endif
#define DPRINTF(x) DPRINTFN(0, x)
int cdce_tx_list_init(struct cdce_softc *);
int cdce_rx_list_init(struct cdce_softc *);
int cdce_newbuf(struct cdce_softc *, struct cdce_chain *,
struct mbuf *);
int cdce_encap(struct cdce_softc *, struct mbuf *, int);
void cdce_rxeof(usbd_xfer_handle, usbd_private_handle, usbd_status);
void cdce_txeof(usbd_xfer_handle, usbd_private_handle, usbd_status);
void cdce_start(struct ifnet *);
int cdce_ioctl(struct ifnet *, u_long, caddr_t);
void cdce_init(void *);
void cdce_watchdog(struct ifnet *);
void cdce_stop(struct cdce_softc *);
void cdce_intr(usbd_xfer_handle, usbd_private_handle, usbd_status);
static uint32_t cdce_crc32(const void *, size_t);
const struct cdce_type cdce_devs[] = {
{{ USB_VENDOR_ACERLABS, USB_PRODUCT_ACERLABS_M5632 }, 0 },
{{ USB_VENDOR_PROLIFIC, USB_PRODUCT_PROLIFIC_PL2501 }, 0 },
{{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_SL5500 }, CDCE_ZAURUS },
{{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_A300 }, CDCE_ZAURUS },
{{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_SL5600 }, CDCE_ZAURUS },
{{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_C700 }, CDCE_ZAURUS },
{{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_C750 }, CDCE_ZAURUS },
{{ USB_VENDOR_MOTOROLA2, USB_PRODUCT_MOTOROLA2_USBLAN }, CDCE_ZAURUS },
{{ USB_VENDOR_MOTOROLA2, USB_PRODUCT_MOTOROLA2_USBLAN2 }, CDCE_ZAURUS },
{{ USB_VENDOR_GMATE, USB_PRODUCT_GMATE_YP3X00 }, 0 },
{{ USB_VENDOR_NETCHIP, USB_PRODUCT_NETCHIP_ETHERNETGADGET }, 0 },
{{ USB_VENDOR_COMPAQ, USB_PRODUCT_COMPAQ_IPAQLINUX }, 0 },
{{ USB_VENDOR_AMBIT, USB_PRODUCT_AMBIT_NTL_250 }, CDCE_SWAPUNION },
};
#define cdce_lookup(v, p) \
((const struct cdce_type *)usb_lookup(cdce_devs, v, p))
int cdce_match(struct device *, void *, void *);
void cdce_attach(struct device *, struct device *, void *);
int cdce_detach(struct device *, int);
int cdce_activate(struct device *, enum devact);
struct cfdriver cdce_cd = {
NULL, "cdce", DV_IFNET
};
const struct cfattach cdce_ca = {
sizeof(struct cdce_softc),
cdce_match,
cdce_attach,
cdce_detach,
cdce_activate,
};
int
cdce_match(struct device *parent, void *match, void *aux)
{
struct usb_attach_arg *uaa = aux;
usb_interface_descriptor_t *id;
if (uaa->iface == NULL)
return (UMATCH_NONE);
id = usbd_get_interface_descriptor(uaa->iface);
if (id == NULL)
return (UMATCH_NONE);
if (cdce_lookup(uaa->vendor, uaa->product) != NULL)
return (UMATCH_VENDOR_PRODUCT);
if (id->bInterfaceClass == UICLASS_CDC && id->bInterfaceSubClass ==
UISUBCLASS_ETHERNET_NETWORKING_CONTROL_MODEL)
return (UMATCH_IFACECLASS_GENERIC);
return (UMATCH_NONE);
}
void
cdce_attach(struct device *parent, struct device *self, void *aux)
{
struct cdce_softc *sc = (struct cdce_softc *)self;
struct usb_attach_arg *uaa = aux;
int s;
struct ifnet *ifp;
usbd_device_handle dev = uaa->device;
const struct cdce_type *t;
usb_interface_descriptor_t *id;
usb_endpoint_descriptor_t *ed;
usb_cdc_union_descriptor_t *ud;
usb_cdc_ethernet_descriptor_t *ethd;
usb_config_descriptor_t *cd;
const usb_descriptor_t *desc;
usbd_desc_iter_t iter;
usb_string_descriptor_t eaddr_str;
struct timeval now;
u_int32_t macaddr_lo;
u_int16_t macaddr_hi;
int i, j, numalts, len;
int ctl_ifcno = -1;
int data_ifcno = -1;
sc->cdce_udev = uaa->device;
sc->cdce_ctl_iface = uaa->iface;
id = usbd_get_interface_descriptor(sc->cdce_ctl_iface);
ctl_ifcno = id->bInterfaceNumber;
t = cdce_lookup(uaa->vendor, uaa->product);
if (t)
sc->cdce_flags = t->cdce_flags;
/* Get the data interface no. and capabilities */
ethd = NULL;
usb_desc_iter_init(dev, &iter);
desc = usb_desc_iter_next(&iter);
while (desc) {
if (desc->bDescriptorType != UDESC_CS_INTERFACE) {
desc = usb_desc_iter_next(&iter);
continue;
}
switch(desc->bDescriptorSubtype) {
case UDESCSUB_CDC_UNION:
ud = (usb_cdc_union_descriptor_t *)desc;
if ((sc->cdce_flags & CDCE_SWAPUNION) == 0 &&
ud->bMasterInterface == ctl_ifcno)
data_ifcno = ud->bSlaveInterface[0];
if ((sc->cdce_flags & CDCE_SWAPUNION) &&
ud->bSlaveInterface[0] == ctl_ifcno)
data_ifcno = ud->bMasterInterface;
break;
case UDESCSUB_CDC_ENF:
if (ethd) {
printf("%s: ", sc->cdce_dev.dv_xname);
printf("extra ethernet descriptor\n");
return;
}
ethd = (usb_cdc_ethernet_descriptor_t *)desc;
break;
}
desc = usb_desc_iter_next(&iter);
}
if (data_ifcno == -1) {
DPRINTF(("cdce_attach: no union interface\n"));
sc->cdce_data_iface = sc->cdce_ctl_iface;
} else {
DPRINTF(("cdce_attach: union interface: ctl=%d, data=%d\n",
ctl_ifcno, data_ifcno));
for (i = 0; i < uaa->nifaces; i++) {
if (uaa->ifaces[i] == NULL)
continue;
id = usbd_get_interface_descriptor(uaa->ifaces[i]);
if (id != NULL && id->bInterfaceNumber == data_ifcno) {
sc->cdce_data_iface = uaa->ifaces[i];
uaa->ifaces[i] = NULL;
}
}
}
if (sc->cdce_data_iface == NULL) {
printf("%s: no data interface\n", sc->cdce_dev.dv_xname);
return;
}
id = usbd_get_interface_descriptor(sc->cdce_ctl_iface);
sc->cdce_intr_no = -1;
for (i = 0; i < id->bNumEndpoints && sc->cdce_intr_no == -1; i++) {
ed = usbd_interface2endpoint_descriptor(sc->cdce_ctl_iface, i);
if (!ed) {
printf("%s: no descriptor for interrupt endpoint %d\n",
sc->cdce_dev.dv_xname, i);
return;
}
if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) {
sc->cdce_intr_no = ed->bEndpointAddress;
sc->cdce_intr_size = sizeof(sc->cdce_intr_buf);
}
}
id = usbd_get_interface_descriptor(sc->cdce_data_iface);
cd = usbd_get_config_descriptor(sc->cdce_udev);
numalts = usbd_get_no_alts(cd, id->bInterfaceNumber);
for (j = 0; j < numalts; j++) {
if (usbd_set_interface(sc->cdce_data_iface, j)) {
printf("%s: interface alternate setting %d failed\n",
sc->cdce_dev.dv_xname, j);
return;
}
/* Find endpoints. */
id = usbd_get_interface_descriptor(sc->cdce_data_iface);
sc->cdce_bulkin_no = sc->cdce_bulkout_no = -1;
for (i = 0; i < id->bNumEndpoints; i++) {
ed = usbd_interface2endpoint_descriptor(
sc->cdce_data_iface, i);
if (!ed) {
printf("%s: no descriptor for bulk endpoint "
"%d\n", sc->cdce_dev.dv_xname, i);
return;
}
if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
sc->cdce_bulkin_no = ed->bEndpointAddress;
} else if (
UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT &&
UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
sc->cdce_bulkout_no = ed->bEndpointAddress;
}
#ifdef CDCE_DEBUG
else if (
UE_GET_DIR(ed->bEndpointAddress) != UE_DIR_IN &&
UE_GET_XFERTYPE(ed->bmAttributes) != UE_INTERRUPT) {
printf("%s: unexpected endpoint, ep=%x attr=%x"
"\n", sc->cdce_dev.dv_xname,
ed->bEndpointAddress, ed->bmAttributes);
}
#endif
}
if ((sc->cdce_bulkin_no != -1) && (sc->cdce_bulkout_no != -1)) {
DPRINTF(("cdce_attach: intr=0x%x, in=0x%x, out=0x%x\n",
sc->cdce_intr_no, sc->cdce_bulkin_no,
sc->cdce_bulkout_no));
goto found;
}
}
if (sc->cdce_bulkin_no == -1) {
printf("%s: could not find data bulk in\n",
sc->cdce_dev.dv_xname);
return;
}
if (sc->cdce_bulkout_no == -1 ) {
printf("%s: could not find data bulk out\n",
sc->cdce_dev.dv_xname);
return;
}
found:
s = splnet();
if (!ethd || usbd_get_string_desc(sc->cdce_udev, ethd->iMacAddress, 0,
&eaddr_str, &len)) {
macaddr_hi = htons(0x2acb);
bcopy(&macaddr_hi, &sc->cdce_arpcom.ac_enaddr[0],
sizeof(u_int16_t));
getmicrotime(&now);
macaddr_lo = htonl(now.tv_usec << 8);
bcopy(&macaddr_lo, &sc->cdce_arpcom.ac_enaddr[2], sizeof(u_int32_t));
sc->cdce_arpcom.ac_enaddr[5] = (u_int8_t)(sc->cdce_unit);
} else {
for (i = 0; i < ETHER_ADDR_LEN * 2; i++) {
int c = UGETW(eaddr_str.bString[i]);
if ('0' <= c && c <= '9')
c -= '0';
else if ('A' <= c && c <= 'F')
c -= 'A' - 10;
else if ('a' <= c && c <= 'f')
c -= 'a' - 10;
c &= 0xf;
if (i % 2 == 0)
c <<= 4;
sc->cdce_arpcom.ac_enaddr[i / 2] |= c;
}
}
printf("%s: address %s\n", sc->cdce_dev.dv_xname,
ether_sprintf(sc->cdce_arpcom.ac_enaddr));
ifp = GET_IFP(sc);
ifp->if_softc = sc;
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
ifp->if_ioctl = cdce_ioctl;
ifp->if_start = cdce_start;
ifp->if_watchdog = cdce_watchdog;
strlcpy(ifp->if_xname, sc->cdce_dev.dv_xname, IFNAMSIZ);
IFQ_SET_READY(&ifp->if_snd);
if_attach(ifp);
ether_ifattach(ifp);
sc->cdce_attached = 1;
splx(s);
usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->cdce_udev,
&sc->cdce_dev);
}
int
cdce_detach(struct device *self, int flags)
{
struct cdce_softc *sc = (struct cdce_softc *)self;
struct ifnet *ifp = GET_IFP(sc);
int s;
s = splusb();
if (!sc->cdce_attached) {
splx(s);
return (0);
}
if (ifp->if_flags & IFF_RUNNING)
cdce_stop(sc);
ether_ifdetach(ifp);
if_detach(ifp);
sc->cdce_attached = 0;
splx(s);
return (0);
}
void
cdce_start(struct ifnet *ifp)
{
struct cdce_softc *sc = ifp->if_softc;
struct mbuf *m_head = NULL;
if (sc->cdce_dying || (ifp->if_flags & IFF_OACTIVE))
return;
IFQ_POLL(&ifp->if_snd, m_head);
if (m_head == NULL)
return;
if (cdce_encap(sc, m_head, 0)) {
ifp->if_flags |= IFF_OACTIVE;
return;
}
IFQ_DEQUEUE(&ifp->if_snd, m_head);
#if NBPFILTER > 0
if (ifp->if_bpf)
bpf_mtap(ifp->if_bpf, m_head, BPF_DIRECTION_OUT);
#endif
ifp->if_flags |= IFF_OACTIVE;
ifp->if_timer = 6;
}
int
cdce_encap(struct cdce_softc *sc, struct mbuf *m, int idx)
{
struct cdce_chain *c;
usbd_status err;
int extra = 0;
c = &sc->cdce_cdata.cdce_tx_chain[idx];
m_copydata(m, 0, m->m_pkthdr.len, c->cdce_buf);
if (sc->cdce_flags & CDCE_ZAURUS) {
/* Zaurus wants a 32-bit CRC appended to every frame */
u_int32_t crc;
crc = cdce_crc32(c->cdce_buf, m->m_pkthdr.len);
bcopy(&crc, c->cdce_buf + m->m_pkthdr.len, 4);
extra = 4;
}
c->cdce_mbuf = m;
usbd_setup_xfer(c->cdce_xfer, sc->cdce_bulkout_pipe, c, c->cdce_buf,
m->m_pkthdr.len + extra, USBD_FORCE_SHORT_XFER | USBD_NO_COPY,
10000, cdce_txeof);
err = usbd_transfer(c->cdce_xfer);
if (err != USBD_IN_PROGRESS) {
cdce_stop(sc);
return (EIO);
}
sc->cdce_cdata.cdce_tx_cnt++;
return (0);
}
void
cdce_stop(struct cdce_softc *sc)
{
usbd_status err;
struct ifnet *ifp = GET_IFP(sc);
int i;
ifp->if_timer = 0;
ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
if (sc->cdce_bulkin_pipe != NULL) {
err = usbd_abort_pipe(sc->cdce_bulkin_pipe);
if (err)
printf("%s: abort rx pipe failed: %s\n",
sc->cdce_dev.dv_xname, usbd_errstr(err));
err = usbd_close_pipe(sc->cdce_bulkin_pipe);
if (err)
printf("%s: close rx pipe failed: %s\n",
sc->cdce_dev.dv_xname, usbd_errstr(err));
sc->cdce_bulkin_pipe = NULL;
}
if (sc->cdce_bulkout_pipe != NULL) {
err = usbd_abort_pipe(sc->cdce_bulkout_pipe);
if (err)
printf("%s: abort tx pipe failed: %s\n",
sc->cdce_dev.dv_xname, usbd_errstr(err));
err = usbd_close_pipe(sc->cdce_bulkout_pipe);
if (err)
printf("%s: close tx pipe failed: %s\n",
sc->cdce_dev.dv_xname, usbd_errstr(err));
sc->cdce_bulkout_pipe = NULL;
}
if (sc->cdce_intr_pipe != NULL) {
err = usbd_abort_pipe(sc->cdce_intr_pipe);
if (err)
printf("%s: abort interrupt pipe failed: %s\n",
sc->cdce_dev.dv_xname, usbd_errstr(err));
err = usbd_close_pipe(sc->cdce_intr_pipe);
if (err)
printf("%s: close interrupt pipe failed: %s\n",
sc->cdce_dev.dv_xname, usbd_errstr(err));
sc->cdce_intr_pipe = NULL;
}
for (i = 0; i < CDCE_RX_LIST_CNT; i++) {
if (sc->cdce_cdata.cdce_rx_chain[i].cdce_mbuf != NULL) {
m_freem(sc->cdce_cdata.cdce_rx_chain[i].cdce_mbuf);
sc->cdce_cdata.cdce_rx_chain[i].cdce_mbuf = NULL;
}
if (sc->cdce_cdata.cdce_rx_chain[i].cdce_xfer != NULL) {
usbd_free_xfer(sc->cdce_cdata.cdce_rx_chain[i].cdce_xfer);
sc->cdce_cdata.cdce_rx_chain[i].cdce_xfer = NULL;
}
}
for (i = 0; i < CDCE_TX_LIST_CNT; i++) {
if (sc->cdce_cdata.cdce_tx_chain[i].cdce_mbuf != NULL) {
m_freem(sc->cdce_cdata.cdce_tx_chain[i].cdce_mbuf);
sc->cdce_cdata.cdce_tx_chain[i].cdce_mbuf = NULL;
}
if (sc->cdce_cdata.cdce_tx_chain[i].cdce_xfer != NULL) {
usbd_free_xfer(
sc->cdce_cdata.cdce_tx_chain[i].cdce_xfer);
sc->cdce_cdata.cdce_tx_chain[i].cdce_xfer = NULL;
}
}
}
int
cdce_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
{
struct cdce_softc *sc = ifp->if_softc;
struct ifaddr *ifa = (struct ifaddr *)data;
struct ifreq *ifr = (struct ifreq *)data;
int s, error = 0;
if (sc->cdce_dying)
return (EIO);
s = splnet();
switch(command) {
case SIOCSIFADDR:
ifp->if_flags |= IFF_UP;
cdce_init(sc);
switch (ifa->ifa_addr->sa_family) {
case AF_INET:
arp_ifinit(&sc->cdce_arpcom, ifa);
break;
}
break;
case SIOCSIFMTU:
if (ifr->ifr_mtu > ETHERMTU)
error = EINVAL;
else
ifp->if_mtu = ifr->ifr_mtu;
break;
case SIOCSIFFLAGS:
if (ifp->if_flags & IFF_UP) {
if (!(ifp->if_flags & IFF_RUNNING))
cdce_init(sc);
} else {
if (ifp->if_flags & IFF_RUNNING)
cdce_stop(sc);
}
error = 0;
break;
case SIOCADDMULTI:
case SIOCDELMULTI:
error = (command == SIOCADDMULTI) ?
ether_addmulti(ifr, &sc->cdce_arpcom) :
ether_delmulti(ifr, &sc->cdce_arpcom);
if (error == ENETRESET)
error = 0;
break;
default:
error = ether_ioctl(ifp, &sc->cdce_arpcom, command, data);
break;
}
splx(s);
return (error);
}
void
cdce_watchdog(struct ifnet *ifp)
{
struct cdce_softc *sc = ifp->if_softc;
if (sc->cdce_dying)
return;
ifp->if_oerrors++;
printf("%s: watchdog timeout\n", sc->cdce_dev.dv_xname);
}
void
cdce_init(void *xsc)
{
struct cdce_softc *sc = xsc;
struct ifnet *ifp = GET_IFP(sc);
struct cdce_chain *c;
usbd_status err;
int s, i;
if (ifp->if_flags & IFF_RUNNING)
return;
s = splnet();
if (sc->cdce_intr_no != -1 && sc->cdce_intr_pipe == NULL) {
DPRINTFN(1, ("cdce_init: establish interrupt pipe\n"));
err = usbd_open_pipe_intr(sc->cdce_ctl_iface, sc->cdce_intr_no,
USBD_SHORT_XFER_OK, &sc->cdce_intr_pipe, sc,
&sc->cdce_intr_buf, sc->cdce_intr_size, cdce_intr,
USBD_DEFAULT_INTERVAL);
if (err) {
printf("%s: open interrupt pipe failed: %s\n",
sc->cdce_dev.dv_xname, usbd_errstr(err));
splx(s);
return;
}
}
if (cdce_tx_list_init(sc) == ENOBUFS) {
printf("%s: tx list init failed\n", sc->cdce_dev.dv_xname);
splx(s);
return;
}
if (cdce_rx_list_init(sc) == ENOBUFS) {
printf("%s: rx list init failed\n", sc->cdce_dev.dv_xname);
splx(s);
return;
}
/* Maybe set multicast / broadcast here??? */
err = usbd_open_pipe(sc->cdce_data_iface, sc->cdce_bulkin_no,
USBD_EXCLUSIVE_USE, &sc->cdce_bulkin_pipe);
if (err) {
printf("%s: open rx pipe failed: %s\n", sc->cdce_dev.dv_xname,
usbd_errstr(err));
splx(s);
return;
}
err = usbd_open_pipe(sc->cdce_data_iface, sc->cdce_bulkout_no,
USBD_EXCLUSIVE_USE, &sc->cdce_bulkout_pipe);
if (err) {
printf("%s: open tx pipe failed: %s\n", sc->cdce_dev.dv_xname,
usbd_errstr(err));
splx(s);
return;
}
for (i = 0; i < CDCE_RX_LIST_CNT; i++) {
c = &sc->cdce_cdata.cdce_rx_chain[i];
usbd_setup_xfer(c->cdce_xfer, sc->cdce_bulkin_pipe, c,
c->cdce_buf, CDCE_BUFSZ, USBD_SHORT_XFER_OK | USBD_NO_COPY,
USBD_NO_TIMEOUT, cdce_rxeof);
usbd_transfer(c->cdce_xfer);
}
ifp->if_flags |= IFF_RUNNING;
ifp->if_flags &= ~IFF_OACTIVE;
splx(s);
}
int
cdce_newbuf(struct cdce_softc *sc, struct cdce_chain *c, struct mbuf *m)
{
struct mbuf *m_new = NULL;
if (m == NULL) {
MGETHDR(m_new, M_DONTWAIT, MT_DATA);
if (m_new == NULL) {
printf("%s: no memory for rx list "
"-- packet dropped!\n", sc->cdce_dev.dv_xname);
return (ENOBUFS);
}
MCLGET(m_new, M_DONTWAIT);
if (!(m_new->m_flags & M_EXT)) {
printf("%s: no memory for rx list "
"-- packet dropped!\n", sc->cdce_dev.dv_xname);
m_freem(m_new);
return (ENOBUFS);
}
m_new->m_len = m_new->m_pkthdr.len = MCLBYTES;
} else {
m_new = m;
m_new->m_len = m_new->m_pkthdr.len = MCLBYTES;
m_new->m_data = m_new->m_ext.ext_buf;
}
m_adj(m_new, ETHER_ALIGN);
c->cdce_mbuf = m_new;
return (0);
}
int
cdce_rx_list_init(struct cdce_softc *sc)
{
struct cdce_cdata *cd;
struct cdce_chain *c;
int i;
cd = &sc->cdce_cdata;
for (i = 0; i < CDCE_RX_LIST_CNT; i++) {
c = &cd->cdce_rx_chain[i];
c->cdce_sc = sc;
c->cdce_idx = i;
if (cdce_newbuf(sc, c, NULL) == ENOBUFS)
return (ENOBUFS);
if (c->cdce_xfer == NULL) {
c->cdce_xfer = usbd_alloc_xfer(sc->cdce_udev);
if (c->cdce_xfer == NULL)
return (ENOBUFS);
c->cdce_buf = usbd_alloc_buffer(c->cdce_xfer,
CDCE_BUFSZ);
if (c->cdce_buf == NULL)
return (ENOBUFS);
}
}
return (0);
}
int
cdce_tx_list_init(struct cdce_softc *sc)
{
struct cdce_cdata *cd;
struct cdce_chain *c;
int i;
cd = &sc->cdce_cdata;
for (i = 0; i < CDCE_TX_LIST_CNT; i++) {
c = &cd->cdce_tx_chain[i];
c->cdce_sc = sc;
c->cdce_idx = i;
c->cdce_mbuf = NULL;
if (c->cdce_xfer == NULL) {
c->cdce_xfer = usbd_alloc_xfer(sc->cdce_udev);
if (c->cdce_xfer == NULL)
return (ENOBUFS);
c->cdce_buf = usbd_alloc_buffer(c->cdce_xfer,
CDCE_BUFSZ);
if (c->cdce_buf == NULL)
return (ENOBUFS);
}
}
return (0);
}
void
cdce_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status)
{
struct cdce_chain *c = priv;
struct cdce_softc *sc = c->cdce_sc;
struct ifnet *ifp = GET_IFP(sc);
struct mbuf *m;
int total_len = 0;
int s;
if (sc->cdce_dying || !(ifp->if_flags & IFF_RUNNING))
return;
if (status != USBD_NORMAL_COMPLETION) {
if (status == USBD_NOT_STARTED || status == USBD_CANCELLED)
return;
if (sc->cdce_rxeof_errors == 0)
printf("%s: usb error on rx: %s\n",
sc->cdce_dev.dv_xname, usbd_errstr(status));
if (status == USBD_STALLED)
usbd_clear_endpoint_stall_async(sc->cdce_bulkin_pipe);
DELAY(sc->cdce_rxeof_errors * 10000);
if (sc->cdce_rxeof_errors++ > 10) {
printf("%s: too many errors, disabling\n",
sc->cdce_dev.dv_xname);
sc->cdce_dying = 1;
return;
}
goto done;
}
sc->cdce_rxeof_errors = 0;
usbd_get_xfer_status(xfer, NULL, NULL, &total_len, NULL);
if (sc->cdce_flags & CDCE_ZAURUS)
total_len -= 4; /* Strip off CRC added by Zaurus */
if (total_len <= 1)
goto done;
m = c->cdce_mbuf;
memcpy(mtod(m, char *), c->cdce_buf, total_len);
if (total_len < sizeof(struct ether_header)) {
ifp->if_ierrors++;
goto done;
}
ifp->if_ipackets++;
m->m_pkthdr.len = m->m_len = total_len;
m->m_pkthdr.rcvif = ifp;
s = splnet();
if (cdce_newbuf(sc, c, NULL) == ENOBUFS) {
ifp->if_ierrors++;
goto done1;
}
#if NBPFILTER > 0
if (ifp->if_bpf)
bpf_mtap(ifp->if_bpf, m, BPF_DIRECTION_IN);
#endif
ether_input_mbuf(ifp, m);
done1:
splx(s);
done:
/* Setup new transfer. */
usbd_setup_xfer(c->cdce_xfer, sc->cdce_bulkin_pipe, c, c->cdce_buf,
CDCE_BUFSZ, USBD_SHORT_XFER_OK | USBD_NO_COPY, USBD_NO_TIMEOUT,
cdce_rxeof);
usbd_transfer(c->cdce_xfer);
}
void
cdce_txeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status)
{
struct cdce_chain *c = priv;
struct cdce_softc *sc = c->cdce_sc;
struct ifnet *ifp = GET_IFP(sc);
usbd_status err;
int s;
if (sc->cdce_dying)
return;
s = splnet();
ifp->if_timer = 0;
ifp->if_flags &= ~IFF_OACTIVE;
if (status != USBD_NORMAL_COMPLETION) {
if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) {
splx(s);
return;
}
ifp->if_oerrors++;
printf("%s: usb error on tx: %s\n", sc->cdce_dev.dv_xname,
usbd_errstr(status));
if (status == USBD_STALLED)
usbd_clear_endpoint_stall_async(sc->cdce_bulkout_pipe);
splx(s);
return;
}
usbd_get_xfer_status(c->cdce_xfer, NULL, NULL, NULL, &err);
if (c->cdce_mbuf != NULL) {
m_freem(c->cdce_mbuf);
c->cdce_mbuf = NULL;
}
if (err)
ifp->if_oerrors++;
else
ifp->if_opackets++;
if (IFQ_IS_EMPTY(&ifp->if_snd) == 0)
cdce_start(ifp);
splx(s);
}
int
cdce_activate(struct device *self, enum devact act)
{
struct cdce_softc *sc = (struct cdce_softc *)self;
switch (act) {
case DVACT_ACTIVATE:
break;
case DVACT_DEACTIVATE:
sc->cdce_dying = 1;
break;
}
return (0);
}
void
cdce_intr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status)
{
struct cdce_softc *sc = addr;
usb_cdc_notification_t *buf = &sc->cdce_intr_buf;
usb_cdc_connection_speed_t *speed;
u_int32_t count;
if (status == USBD_CANCELLED)
return;
if (status != USBD_NORMAL_COMPLETION) {
DPRINTFN(2, ("cdce_intr: status=%d\n", status));
if (status == USBD_STALLED)
usbd_clear_endpoint_stall_async(sc->cdce_intr_pipe);
return;
}
usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL);
if (buf->bmRequestType == UCDC_NOTIFICATION) {
switch (buf->bNotification) {
case UCDC_N_NETWORK_CONNECTION:
DPRINTFN(1, ("cdce_intr: network %s\n",
UGETW(buf->wValue) ? "connected" : "disconnected"));
break;
case UCDC_N_CONNECTION_SPEED_CHANGE:
speed = (usb_cdc_connection_speed_t *)&buf->data;
DPRINTFN(1, ("cdce_intr: up=%d, down=%d\n",
UGETDW(speed->dwUSBitRate),
UGETDW(speed->dwDSBitRate)));
break;
default:
DPRINTF(("cdce_intr: bNotification 0x%x\n",
buf->bNotification));
}
}
#ifdef CDCE_DEBUG
else {
printf("cdce_intr: bmRequestType=%d ", buf->bmRequestType);
printf("wValue=%d wIndex=%d wLength=%d\n", UGETW(buf->wValue),
UGETW(buf->wIndex), UGETW(buf->wLength));
}
#endif
}
/* COPYRIGHT (C) 1986 Gary S. Brown. You may use this program, or
* code or tables extracted from it, as desired without restriction.
*/
static uint32_t cdce_crc32_tab[] = {
0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c,
0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106,
0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,
0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,
0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,
0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
};
uint32_t
cdce_crc32(const void *buf, size_t size)
{
const uint8_t *p;
uint32_t crc;
p = buf;
crc = ~0U;
while (size--)
crc = cdce_crc32_tab[(crc ^ *p++) & 0xFF] ^ (crc >> 8);
return (htole32(crc) ^ ~0U);
}
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