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/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2011-2014 Intel Corporation
* Copyright (C) 2004-2010 Marcel Holtmann <marcel@holtmann.org>
*
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <sys/uio.h>
#include "lib/bluetooth.h"
#include "lib/hci.h"
#include "src/shared/mainloop.h"
#include "monitor/bt.h"
#include "btdev.h"
#include "vhci.h"
#define uninitialized_var(x) x = x
struct vhci {
enum vhci_type type;
int fd;
struct btdev *btdev;
};
static void vhci_destroy(void *user_data)
{
struct vhci *vhci = user_data;
btdev_destroy(vhci->btdev);
close(vhci->fd);
free(vhci);
}
static void vhci_write_callback(const struct iovec *iov, int iovlen,
void *user_data)
{
struct vhci *vhci = user_data;
ssize_t written;
written = writev(vhci->fd, iov, iovlen);
if (written < 0)
return;
}
static void vhci_read_callback(int fd, uint32_t events, void *user_data)
{
struct vhci *vhci = user_data;
unsigned char buf[4096];
ssize_t len;
if (events & (EPOLLERR | EPOLLHUP))
return;
len = read(vhci->fd, buf, sizeof(buf));
if (len < 1)
return;
switch (buf[0]) {
case BT_H4_CMD_PKT:
case BT_H4_ACL_PKT:
case BT_H4_SCO_PKT:
btdev_receive_h4(vhci->btdev, buf, len);
break;
}
}
struct vhci *vhci_open(enum vhci_type type)
{
struct vhci *vhci;
enum btdev_type uninitialized_var(btdev_type);
unsigned char uninitialized_var(ctrl_type);
unsigned char setup_cmd[2];
static uint8_t id = 0x23;
switch (type) {
case VHCI_TYPE_BREDRLE:
btdev_type = BTDEV_TYPE_BREDRLE;
ctrl_type = HCI_PRIMARY;
break;
case VHCI_TYPE_BREDR:
btdev_type = BTDEV_TYPE_BREDR;
ctrl_type = HCI_PRIMARY;
break;
case VHCI_TYPE_LE:
btdev_type = BTDEV_TYPE_LE;
ctrl_type = HCI_PRIMARY;
break;
case VHCI_TYPE_AMP:
btdev_type = BTDEV_TYPE_AMP;
ctrl_type = HCI_AMP;
break;
}
vhci = malloc(sizeof(*vhci));
if (!vhci)
return NULL;
memset(vhci, 0, sizeof(*vhci));
vhci->type = type;
vhci->fd = open("/dev/vhci", O_RDWR | O_NONBLOCK);
if (vhci->fd < 0) {
free(vhci);
return NULL;
}
setup_cmd[0] = HCI_VENDOR_PKT;
setup_cmd[1] = ctrl_type;
if (write(vhci->fd, setup_cmd, sizeof(setup_cmd)) < 0) {
close(vhci->fd);
free(vhci);
return NULL;
}
vhci->btdev = btdev_create(btdev_type, id++);
if (!vhci->btdev) {
close(vhci->fd);
free(vhci);
return NULL;
}
btdev_set_send_handler(vhci->btdev, vhci_write_callback, vhci);
if (mainloop_add_fd(vhci->fd, EPOLLIN, vhci_read_callback,
vhci, vhci_destroy) < 0) {
btdev_destroy(vhci->btdev);
close(vhci->fd);
free(vhci);
return NULL;
}
return vhci;
}
void vhci_close(struct vhci *vhci)
{
if (!vhci)
return;
mainloop_remove_fd(vhci->fd);
}
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