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device.c
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device.c
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/*
* Copyright 2007-2009, Axel Dörfler, axeld@pinc-software.de.
* Copyright 2007, Hugo Santos. All Rights Reserved.
* Copyright 2004, Marcus Overhagen. All Rights Reserved.
* Distributed under the terms of the MIT License.
*/
#include "device.h"
#include <stdlib.h>
#include <sys/sockio.h>
#include <Drivers.h>
#include <ether_driver.h>
#include <compat/sys/haiku-module.h>
#include <compat/sys/bus.h>
#include <compat/sys/mbuf.h>
#include <compat/net/ethernet.h>
#include <compat/net/if_media.h>
static status_t
compat_open(const char *name, uint32 flags, void **cookie)
{
struct ifnet *ifp;
struct ifreq ifr;
int i;
status_t status;
for (i = 0; i < MAX_DEVICES; i++) {
if (gDevices[i] != NULL && !strcmp(gDevices[i]->device_name, name))
break;
}
if (i == MAX_DEVICES)
return B_ERROR;
if (get_module(NET_STACK_MODULE_NAME, (module_info **)&gStack) != B_OK)
return B_ERROR;
ifp = gDevices[i];
if_printf(ifp, "compat_open(0x%" B_PRIx32 ")\n", flags);
if (atomic_or(&ifp->open_count, 1)) {
put_module(NET_STACK_MODULE_NAME);
return B_BUSY;
}
ifp->if_init(ifp->if_softc);
if (!HAIKU_DRIVER_REQUIRES(FBSD_WLAN)) {
ifp->if_flags &= ~IFF_UP;
ifp->if_ioctl(ifp, SIOCSIFFLAGS, NULL);
memset(&ifr, 0, sizeof(ifr));
ifr.ifr_media = IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, 0);
status = ifp->if_ioctl(ifp, SIOCSIFMEDIA, (caddr_t)&ifr);
if (status != B_OK) {
ifr.ifr_media = IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, 0);
status = ifp->if_ioctl(ifp, SIOCSIFMEDIA, (caddr_t)&ifr);
}
}
ifp->if_flags |= IFF_UP;
ifp->flags &= ~DEVICE_CLOSED;
ifp->if_ioctl(ifp, SIOCSIFFLAGS, NULL);
*cookie = ifp;
return B_OK;
}
static status_t
compat_close(void *cookie)
{
struct ifnet *ifp = cookie;
if_printf(ifp, "compat_close()\n");
atomic_or(&ifp->flags, DEVICE_CLOSED);
wlan_close(cookie);
release_sem_etc(ifp->receive_sem, 1, B_RELEASE_ALL);
return B_OK;
}
static status_t
compat_free(void *cookie)
{
struct ifnet *ifp = cookie;
if_printf(ifp, "compat_free()\n");
// TODO: empty out the send queue
atomic_and(&ifp->open_count, 0);
put_module(NET_STACK_MODULE_NAME);
return B_OK;
}
static status_t
compat_read(void *cookie, off_t position, void *buffer, size_t *numBytes)
{
struct ifnet *ifp = cookie;
uint32 semFlags = B_CAN_INTERRUPT;
status_t status;
struct mbuf *mb;
size_t length;
//if_printf(ifp, "compat_read(%lld, %p, [%lu])\n", position,
// buffer, *numBytes);
if (ifp->flags & DEVICE_CLOSED)
return B_INTERRUPTED;
if (ifp->flags & DEVICE_NON_BLOCK)
semFlags |= B_RELATIVE_TIMEOUT;
do {
status = acquire_sem_etc(ifp->receive_sem, 1, semFlags, 0);
if (ifp->flags & DEVICE_CLOSED)
return B_INTERRUPTED;
if (status == B_WOULD_BLOCK) {
*numBytes = 0;
return B_OK;
} else if (status < B_OK)
return status;
IF_DEQUEUE(&ifp->receive_queue, mb);
} while (mb == NULL);
length = min_c(max_c((size_t)mb->m_pkthdr.len, 0), *numBytes);
#if 0
mb = m_defrag(mb, 0);
if (mb == NULL) {
*numBytes = 0;
return B_NO_MEMORY;
}
#endif
m_copydata(mb, 0, length, buffer);
*numBytes = length;
m_freem(mb);
return B_OK;
}
static status_t
compat_write(void *cookie, off_t position, const void *buffer,
size_t *numBytes)
{
struct ifnet *ifp = cookie;
struct mbuf *mb;
//if_printf(ifp, "compat_write(%lld, %p, [%lu])\n", position,
// buffer, *numBytes);
if (*numBytes > MHLEN)
mb = m_getcl(0, MT_DATA, M_PKTHDR);
else
mb = m_gethdr(0, MT_DATA);
if (mb == NULL)
return ENOBUFS;
// if we waited, check after if the ifp is still valid
mb->m_pkthdr.len = mb->m_len = min_c(*numBytes, (size_t)MCLBYTES);
memcpy(mtod(mb, void *), buffer, mb->m_len);
return ifp->if_output(ifp, mb, NULL, NULL);
}
static status_t
compat_control(void *cookie, uint32 op, void *arg, size_t length)
{
struct ifnet *ifp = cookie;
//if_printf(ifp, "compat_control(op %lu, %p, [%lu])\n", op,
// arg, length);
switch (op) {
case ETHER_INIT:
return B_OK;
case ETHER_GETADDR:
return user_memcpy(arg, IF_LLADDR(ifp), ETHER_ADDR_LEN);
case ETHER_NONBLOCK:
{
int32 value;
if (length < 4)
return B_BAD_VALUE;
if (user_memcpy(&value, arg, sizeof(int32)) < B_OK)
return B_BAD_ADDRESS;
if (value)
ifp->flags |= DEVICE_NON_BLOCK;
else
ifp->flags &= ~DEVICE_NON_BLOCK;
return B_OK;
}
case ETHER_SETPROMISC:
{
int32 value;
if (length < 4)
return B_BAD_VALUE;
if (user_memcpy(&value, arg, sizeof(int32)) < B_OK)
return B_BAD_ADDRESS;
if (value)
ifp->if_flags |= IFF_PROMISC;
else
ifp->if_flags &= ~IFF_PROMISC;
return ifp->if_ioctl(ifp, SIOCSIFFLAGS, NULL);
}
case ETHER_GETFRAMESIZE:
{
uint32 frameSize;
if (length < 4)
return B_BAD_VALUE;
frameSize = ifp->if_mtu + ETHER_HDR_LEN;
return user_memcpy(arg, &frameSize, 4);
}
case ETHER_ADDMULTI:
case ETHER_REMMULTI:
{
struct sockaddr_dl address;
if ((ifp->if_flags & IFF_MULTICAST) == 0)
return B_NOT_SUPPORTED;
memset(&address, 0, sizeof(address));
address.sdl_family = AF_LINK;
memcpy(LLADDR(&address), arg, ETHER_ADDR_LEN);
if (op == ETHER_ADDMULTI)
return if_addmulti(ifp, (struct sockaddr *)&address, NULL);
return if_delmulti(ifp, (struct sockaddr *)&address);
}
case ETHER_GET_LINK_STATE:
{
struct ifmediareq mediareq;
ether_link_state_t state;
status_t status;
if (length < sizeof(ether_link_state_t))
return EINVAL;
memset(&mediareq, 0, sizeof(mediareq));
status = ifp->if_ioctl(ifp, SIOCGIFMEDIA, (caddr_t)&mediareq);
if (status < B_OK)
return status;
state.media = mediareq.ifm_active;
if ((mediareq.ifm_status & IFM_ACTIVE) != 0)
state.media |= IFM_ACTIVE;
if ((mediareq.ifm_active & IFM_10_T) != 0)
state.speed = 10000000;
else if ((mediareq.ifm_active & IFM_100_TX) != 0)
state.speed = 100000000;
else
state.speed = 1000000000;
state.quality = 1000;
return user_memcpy(arg, &state, sizeof(ether_link_state_t));
}
case ETHER_SET_LINK_STATE_SEM:
if (user_memcpy(&ifp->link_state_sem, arg, sizeof(sem_id)) < B_OK) {
ifp->link_state_sem = -1;
return B_BAD_ADDRESS;
}
return B_OK;
}
return wlan_control(cookie, op, arg, length);
}
device_hooks gDeviceHooks = {
compat_open,
compat_close,
compat_free,
compat_control,
compat_read,
compat_write,
};