static int bpa10x_recv_event(struct bpa10x_data *data, unsigned char *buf, int size)
{
BT_DBG("data %p buf %p size %d", data, buf, size);
if (data->evt_skb) {
struct sk_buff *skb = data->evt_skb;
memcpy(skb_put(skb, size), buf, size);
if (skb->len == data->evt_len) {
data->evt_skb = NULL;
data->evt_len = 0;
hci_recv_frame(skb);
}
} else {
struct sk_buff *skb;
struct hci_event_hdr *hdr;
unsigned char pkt_type;
int pkt_len = 0;
if (size < HCI_EVENT_HDR_SIZE + 1) {
BT_ERR("%s event packet block with size %d is too short",
data->hdev->name, size);
return -EILSEQ;
}
pkt_type = *buf++;
size--;
if (pkt_type != HCI_EVENT_PKT) {
BT_ERR("%s unexpected event packet start byte 0x%02x",
data->hdev->name, pkt_type);
return -EPROTO;
}
hdr = (struct hci_event_hdr *) buf;
pkt_len = HCI_EVENT_HDR_SIZE + hdr->plen;
skb = bt_skb_alloc(pkt_len, GFP_ATOMIC);
if (!skb) {
BT_ERR("%s no memory for new event packet",
data->hdev->name);
return -ENOMEM;
}
skb->dev = (void *) data->hdev;
bt_cb(skb)->pkt_type = pkt_type;
memcpy(skb_put(skb, size), buf, size);
if (pkt_len == size) {
hci_recv_frame(skb);
} else {
data->evt_skb = skb;
data->evt_len = pkt_len;
}
}
return 0;
}
static void bpa10x_recv_bulk(struct bpa10x_data *data, unsigned char *buf, int count)
{
struct hci_acl_hdr *ah;
struct hci_sco_hdr *sh;
struct hci_vendor_hdr *vh;
struct sk_buff *skb;
int len;
while (count) {
switch (*buf++) {
case HCI_ACLDATA_PKT:
ah = (struct hci_acl_hdr *) buf;
len = HCI_ACL_HDR_SIZE + __le16_to_cpu(ah->dlen);
skb = bt_skb_alloc(len, GFP_ATOMIC);
if (skb) {
memcpy(skb_put(skb, len), buf, len);
skb->dev = (void *) data->hdev;
bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT;
hci_recv_frame(skb);
}
break;
case HCI_SCODATA_PKT:
sh = (struct hci_sco_hdr *) buf;
len = HCI_SCO_HDR_SIZE + sh->dlen;
skb = bt_skb_alloc(len, GFP_ATOMIC);
if (skb) {
memcpy(skb_put(skb, len), buf, len);
skb->dev = (void *) data->hdev;
bt_cb(skb)->pkt_type = HCI_SCODATA_PKT;
hci_recv_frame(skb);
}
break;
case HCI_VENDOR_PKT:
vh = (struct hci_vendor_hdr *) buf;
len = HCI_VENDOR_HDR_SIZE + __le16_to_cpu(vh->dlen);
skb = bt_skb_alloc(len, GFP_ATOMIC);
if (skb) {
memcpy(skb_put(skb, len), buf, len);
skb->dev = (void *) data->hdev;
bt_cb(skb)->pkt_type = HCI_VENDOR_PKT;
hci_recv_frame(skb);
}
break;
default:
len = count - 1;
break;
}
buf += len;
count -= (len + 1);
}
}
static inline ssize_t vhci_get_user(struct vhci_data *data,
const char __user *buf, size_t count)
{
struct sk_buff *skb;
if (count > HCI_MAX_FRAME_SIZE)
return -EINVAL;
skb = bt_skb_alloc(count, GFP_KERNEL);
if (!skb)
return -ENOMEM;
if (copy_from_user(skb_put(skb, count), buf, count)) {
kfree_skb(skb);
return -EFAULT;
}
skb->dev = (void *) data->hdev;
bt_cb(skb)->pkt_type = *((__u8 *) skb->data);
skb_pull(skb, 1);
hci_recv_frame(skb);
return count;
}
static inline ssize_t vhci_get_user(struct vhci_data *data,
struct iov_iter *from)
{
size_t len = iov_iter_count(from);
struct sk_buff *skb;
__u8 pkt_type, opcode;
int ret;
if (len < 2 || len > HCI_MAX_FRAME_SIZE)
return -EINVAL;
skb = bt_skb_alloc(len, GFP_KERNEL);
if (!skb)
return -ENOMEM;
if (copy_from_iter(skb_put(skb, len), len, from) != len) {
kfree_skb(skb);
return -EFAULT;
}
pkt_type = *((__u8 *) skb->data);
skb_pull(skb, 1);
switch (pkt_type) {
case HCI_EVENT_PKT:
case HCI_ACLDATA_PKT:
case HCI_SCODATA_PKT:
if (!data->hdev) {
kfree_skb(skb);
return -ENODEV;
}
hci_skb_pkt_type(skb) = pkt_type;
ret = hci_recv_frame(data->hdev, skb);
break;
case HCI_VENDOR_PKT:
cancel_delayed_work_sync(&data->open_timeout);
opcode = *((__u8 *) skb->data);
skb_pull(skb, 1);
if (skb->len > 0) {
kfree_skb(skb);
return -EINVAL;
}
kfree_skb(skb);
ret = vhci_create_device(data, opcode);
break;
default:
kfree_skb(skb);
return -EINVAL;
}
return (ret < 0) ? ret : len;
}
/* Called by Shared Transport layer when receive data is
* available */
static long st_receive(void *priv_data, struct sk_buff *skb)
{
struct ti_st *lhst = priv_data;
int err;
if (!skb)
return -EFAULT;
if (!lhst) {
kfree_skb(skb);
return -EFAULT;
}
skb->dev = (void *) lhst->hdev;
/* Forward skb to HCI core layer */
err = hci_recv_frame(skb);
if (err < 0) {
BT_ERR("Unable to push skb to HCI core(%d)", err);
/* Since the hci_recv_frame, fails at only 1 point in which
* case it does free the skb, there is no point in conveying
* that the recv has failed, because the ST need not free the
* skb - So sending success in this case too.
return err;*/
return 0;
}
lhst->hdev->stat.byte_rx += skb->len;
return 0;
}
static inline int h4_check_data_len(struct h4_struct *h4, int len)
{
register int room = skb_tailroom(h4->rx_skb);
BT_DBG("len %d room %d", len, room);
if (!len) {
hci_recv_frame(h4->rx_skb);
} else if (len > room) {
BT_ERR("Data length is too large");
kfree_skb(h4->rx_skb);
} else {
h4->rx_state = H4_W4_DATA;
h4->rx_count = len;
return len;
}
#ifdef CONFIG_BT_HCIBCM4325
bcm4325_sleep(1);
#endif
h4->rx_state = H4_W4_PACKET_TYPE;
h4->rx_skb = NULL;
h4->rx_count = 0;
return 0;
}
/* Called by Shared Transport layer when receive data is
* available */
static long st_receive(void *priv_data, struct sk_buff *skb)
{
struct ti_st *lhst = priv_data;
int err;
if (!skb)
return -EFAULT;
if (!lhst) {
kfree_skb(skb);
return -EFAULT;
}
skb->dev = (void *) lhst->hdev;
/* Forward skb to HCI core layer */
err = hci_recv_frame(skb);
if (err < 0) {
BT_ERR("Unable to push skb to HCI core(%d)", err);
return 0;
}
lhst->hdev->stat.byte_rx += skb->len;
return 0;
}
static void hci_smd_recv_event(void)
{
int len = 0;
int rc = 0;
struct sk_buff *skb = NULL;
struct hci_smd_data *hsmd = &hs;
wake_lock(&hs.wake_lock_rx);
len = smd_read_avail(hsmd->event_channel);
if (len > HCI_MAX_FRAME_SIZE) {
BT_ERR("Frame larger than the allowed size, flushing frame");
rc = smd_read(hsmd->event_channel, NULL, len);
goto out_event;
}
while (len > 0) {
skb = bt_skb_alloc(len, GFP_ATOMIC);
if (!skb) {
BT_ERR("Error in allocating socket buffer");
smd_read(hsmd->event_channel, NULL, len);
goto out_event;
}
rc = smd_read(hsmd->event_channel, skb_put(skb, len), len);
if (rc < len) {
BT_ERR("Error in reading from the event channel");
goto out_event;
}
skb->dev = (void *)hsmd->hdev;
bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
skb_orphan(skb);
rc = hci_recv_frame(skb);
if (rc < 0) {
BT_ERR("Error in passing the packet to HCI Layer");
/*
* skb is getting freed in hci_recv_frame, making it
* to null to avoid multiple access
*/
skb = NULL;
goto out_event;
}
len = smd_read_avail(hsmd->event_channel);
/*
* Start the timer to monitor whether the Rx queue is
* empty for releasing the Rx wake lock
*/
BT_DBG("Rx Timer is starting");
mod_timer(&hsmd->rx_q_timer,
jiffies + msecs_to_jiffies(RX_Q_MONITOR));
}
out_event:
release_lock();
if (rc)
kfree_skb(skb);
}
static int nokia_recv_radio(struct hci_dev *hdev, struct sk_buff *skb)
{
/* Packets received on the dedicated radio channel are
* HCI events and so feed them back into the core.
*/
hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
return hci_recv_frame(hdev, skb);
}
int rtbt_hci_dev_receive(void *bt_dev, int pkt_type, char *buf, int len)
{
//struct hci_event_hdr hdr;
//struct hci_dev *hdev = (struct hci_dev *)skb->dev;
struct hci_dev *hdev = 0;
struct sk_buff *skb;
int status;
//int pkt_len;
//printk("-->%s(): receive info: pkt_type=%d(%s), len=%d!\n", __FUNCTION__, pkt_type, pkt_type <= 5 ? pkt_type_str[pkt_type] : "ErrPktType", len);
switch (pkt_type) {
case HCI_EVENT_PKT:
if (len < HCI_EVENT_HDR_SIZE) {
BT_ERR("event block is too short");
return -EILSEQ;
}
break;
case HCI_ACLDATA_PKT:
if (len < HCI_ACL_HDR_SIZE) {
BT_ERR("data block is too short");
return -EILSEQ;
}
break;
case HCI_SCODATA_PKT:
if (len < HCI_SCO_HDR_SIZE) {
BT_ERR("audio block is too short");
return -EILSEQ;
}
break;
}
skb = bt_skb_alloc(len, GFP_ATOMIC);
if (!skb) {
printk("%s no memory for the packet", ((struct hci_dev *)bt_dev)->name);
return -ENOMEM;
}
skb->dev = g_hdev;
rtbt_set_pkt_type(skb, pkt_type);
memcpy(skb_put(skb, len), buf, len);
if (pkt_type == HCI_SCODATA_PKT)
printk("-->%s(): send sco data to OS, time=0x%lx\n", __FUNCTION__, jiffies);
hdev = (struct hci_dev *)skb->dev;
if(hdev){
hdev->stat.byte_rx += len;
}
status = hci_recv_frame(hdev,skb);
//printk("<--%s()\n", __FUNCTION__);
return status;
}
static void hci_usb_bulk_read(struct urb *urb)
{
struct hci_usb *husb = (struct hci_usb *) urb->context;
unsigned char *data = urb->transfer_buffer;
int count = urb->actual_length, status;
struct sk_buff *skb;
hci_acl_hdr *ah;
register __u16 dlen;
if (!husb)
return;
DBG("%s status %d, count %d, flags %x", husb->hdev.name, urb->status, count, urb->transfer_flags);
if (urb->status) {
/* Do not re-submit URB on critical errors */
switch (urb->status) {
case -ENOENT:
return;
default:
goto resubmit;
};
}
if (!count)
goto resubmit;
DMP(data, count);
ah = (hci_acl_hdr *) data;
dlen = le16_to_cpu(ah->dlen);
/* Verify frame len and completeness */
if ((count - HCI_ACL_HDR_SIZE) != dlen) {
ERR("%s corrupted ACL packet: count %d, plen %d", husb->hdev.name, count, dlen);
goto resubmit;
}
/* Allocate packet */
if (!(skb = bluez_skb_alloc(count, GFP_ATOMIC))) {
ERR("Can't allocate mem for new packet");
goto resubmit;
}
memcpy(skb_put(skb, count), data, count);
skb->dev = (void *) &husb->hdev;
skb->pkt_type = HCI_ACLDATA_PKT;
husb->hdev.stat.byte_rx += skb->len;
hci_recv_frame(skb);
resubmit:
husb->read_urb->dev = husb->udev;
if ((status = usb_submit_urb(husb->read_urb)))
DBG("%s read URB submit failed %d", husb->hdev.name, status);
DBG("%s read URB re-submited", husb->hdev.name);
}
static int qca_recv_acl_data(struct hci_dev *hdev, struct sk_buff *skb)
{
/* We receive debug logs from chip as an ACL packets.
* Instead of sending the data to ACL to decode the
* received data, we are pushing them to the above layers
* as a diagnostic packet.
*/
if (get_unaligned_le16(skb->data) == QCA_DEBUG_HANDLE)
return hci_recv_diag(hdev, skb);
return hci_recv_frame(hdev, skb);
}
static inline void hci_h4p_recv_frame(struct hci_h4p_info *info,
struct sk_buff *skb)
{
if (unlikely(!test_bit(HCI_RUNNING, &info->hdev->flags))) {
NBT_DBG("fw_event\n");
hci_h4p_parse_fw_event(info, skb);
} else {
hci_recv_frame(skb);
NBT_DBG("Frame sent to upper layer\n");
}
}
static int hci_smd_recv_frame(struct hci_dev *hdev, int type)
{
int len;
struct sk_buff *skb;
struct smd_channel *channel;
unsigned char *buf;
switch (type) {
case BT_CMD:
channel = cmd_channel;
break;
case BT_DATA:
channel = data_channel;
break;
default:
return -EINVAL;
}
len = smd_cur_packet_size(cmd_channel);
if (len > HCI_MAX_FRAME_SIZE)
return -EINVAL;
while (len) {
skb = bt_skb_alloc(len, GFP_KERNEL);
if (!skb)
return -ENOMEM;
buf = kmalloc(len, GFP_KERNEL);
smd_read(channel, (void *)buf, len);
if (memcpy(skb_put(skb, len), buf, len)) {
kfree_skb(skb);
return -EFAULT;
}
skb->dev = (void *)hdev;
bt_cb(skb)->pkt_type = *((__u8 *) skb->data);
skb_pull(skb, 1);
hci_recv_frame(skb);
kfree(skb);
kfree(buf);
len = smd_cur_packet_size(cmd_channel);
if (len > HCI_MAX_FRAME_SIZE)
return -EINVAL;
}
return 0;
}
static void hci_smd_recv_data(void)
{
int len = 0;
int rc = 0;
struct sk_buff *skb = NULL;
struct hci_smd_data *hsmd = &hs;
wake_lock(&hs.wake_lock_rx);
len = smd_read_avail(hsmd->data_channel);
if (len > HCI_MAX_FRAME_SIZE) {
BT_ERR("Frame larger than the allowed size, flushing frame");
smd_read(hsmd->data_channel, NULL, len);
goto out_data;
}
if (len <= 0)
goto out_data;
skb = bt_skb_alloc(len, GFP_ATOMIC);
if (!skb) {
BT_ERR("Error in allocating socket buffer");
smd_read(hsmd->data_channel, NULL, len);
goto out_data;
}
rc = smd_read(hsmd->data_channel, skb_put(skb, len), len);
if (rc < len) {
BT_ERR("Error in reading from the channel");
goto out_data;
}
skb->dev = (void *)hsmd->hdev;
bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT;
skb_orphan(skb);
rc = hci_recv_frame(skb);
if (rc < 0) {
BT_ERR("Error in passing the packet to HCI Layer");
skb = NULL;
goto out_data;
}
BT_DBG("Rx Timer is starting");
mod_timer(&hsmd->rx_q_timer,
jiffies + msecs_to_jiffies(RX_Q_MONITOR));
out_data:
release_lock();
if (rc)
kfree_skb(skb);
}
static inline void brf6150_recv_frame(struct brf6150_info *info,
struct sk_buff *skb)
{
if (unlikely(!test_bit(HCI_RUNNING, &info->hdev->flags))) {
NBT_DBG("fw_event\n");
brf6150_parse_fw_event(info);
kfree_skb(skb);
} else {
hci_recv_frame(skb);
if (!(brf6150_inb(info, UART_LSR) & UART_LSR_DR))
brf6150_enable_pm_rx(info);
NBT_DBG("Frame sent to upper layer\n");
}
}
void hci_h4p_bc4_parse_fw_event(struct hci_h4p_info *info, struct sk_buff *skb)
{
/* Check if this is fw packet */
if (skb->data[0] != 0xff) {
hci_recv_frame(info->hdev, skb);
return;
}
if (skb->data[11] || skb->data[12]) {
dev_err(info->dev, "Firmware sending command failed\n");
info->fw_error = -EPROTO;
}
kfree_skb(skb);
complete(&info->fw_completion);
}
/* Called by Shared Transport layer when receive data is
* available */
static long hci_st_receive(void *priv_data, struct sk_buff *skb)
{
int err;
int len;
struct hci_st *lhst = (struct hci_st *)priv_data;
BTDRV_API_START();
err = 0;
len = 0;
if (skb == NULL) {
BT_DRV_ERR("Invalid SKB received from ST");
BTDRV_API_EXIT(-EFAULT);
return -EFAULT;
}
if (!lhst) {
kfree_skb(skb);
BT_DRV_ERR("Invalid hci_st memory,freeing SKB");
BTDRV_API_EXIT(-EFAULT);
return -EFAULT;
}
if (!test_bit(BT_DRV_RUNNING, &lhst->flags)) {
kfree_skb(skb);
BT_DRV_ERR("Device is not running,freeing SKB");
BTDRV_API_EXIT(-EINVAL);
return -EINVAL;
}
len = skb->len;
skb->dev = (struct net_device *)lhst->hdev;
/* Forward skb to HCI CORE layer */
err = hci_recv_frame(skb);
if (err) {
kfree_skb(skb);
BT_DRV_ERR("Unable to push skb to HCI CORE(%d),freeing SKB",
err);
BTDRV_API_EXIT(err);
return err;
}
lhst->hdev->stat.byte_rx += len;
BTDRV_API_EXIT(0);
return 0;
}
/* Get packet from user space buffer(already verified) */
static inline ssize_t hci_vhci_get_user(struct hci_vhci_struct *hci_vhci, const char *buf, size_t count)
{
struct sk_buff *skb;
if (count > HCI_MAX_FRAME_SIZE)
return -EINVAL;
if (!(skb = bluez_skb_alloc(count, GFP_KERNEL)))
return -ENOMEM;
copy_from_user(skb_put(skb, count), buf, count);
skb->dev = (void *) &hci_vhci->hdev;
skb->pkt_type = *((__u8 *) skb->data);
skb_pull(skb, 1);
hci_recv_frame(skb);
return count;
}
static int btqcomsmd_recv(struct hci_dev *hdev,
unsigned type,
const void *data,
size_t count)
{
struct sk_buff *skb;
void *buf;
/* Use GFP_ATOMIC as we're in IRQ context */
skb = bt_skb_alloc(count, GFP_ATOMIC);
if (!skb)
return -ENOMEM;
bt_cb(skb)->pkt_type = type;
/* Use io accessor as data might be ioremapped */
buf = skb_put(skb, count);
memcpy_fromio(buf, data, count);
return hci_recv_frame(hdev, skb);
}
static inline int h4_check_data_len(struct h4_struct *h4, int len)
{
register int room = skb_tailroom(h4->rx_skb);
BT_DBG("len %d room %d", len, room);
if (!len) {
BT_DMP(h4->rx_skb->data, h4->rx_skb->len);
hci_recv_frame(h4->rx_skb);
} else if (len > room) {
BT_ERR("Data length is too large");
kfree_skb(h4->rx_skb);
} else {
h4->rx_state = H4_W4_DATA;
h4->rx_count = len;
return len;
}
h4->rx_state = H4_W4_PACKET_TYPE;
h4->rx_skb = NULL;
h4->rx_count = 0;
return 0;
}
static inline int n_hci_check_data_len(struct n_hci *n_hci, int len)
{
register int room = skb_tailroom(n_hci->rx_skb);
DBG("len %d room %d", len, room);
if (!len) {
DMP(n_hci->rx_skb->data, n_hci->rx_skb->len);
hci_recv_frame(n_hci->rx_skb);
} else if (len > room) {
ERR("Data length is to large");
kfree_skb(n_hci->rx_skb);
n_hci->hdev.stat.err_rx++;
} else {
n_hci->rx_state = WAIT_DATA;
n_hci->rx_count = len;
return len;
}
n_hci->rx_state = WAIT_PACKET_TYPE;
n_hci->rx_skb = NULL;
n_hci->rx_count = 0;
return 0;
}
static inline int ll_check_data_len(struct hci_dev *hdev, struct ll_struct *ll, int len)
{
int room = skb_tailroom(ll->rx_skb);
BT_DBG("len %d room %d", len, room);
if (!len) {
hci_recv_frame(hdev, ll->rx_skb);
} else if (len > room) {
BT_ERR("Data length is too large");
kfree_skb(ll->rx_skb);
} else {
ll->rx_state = HCILL_W4_DATA;
ll->rx_count = len;
return len;
}
ll->rx_state = HCILL_W4_PACKET_TYPE;
ll->rx_skb = NULL;
ll->rx_count = 0;
return 0;
}
static inline int brcm_check_data_len(struct brcm_struct *brcm, int len)
{
register int room = skb_tailroom(brcm->rx_skb);
BT_DBG("len %d room %d", len, room);
if (!len) {
hci_recv_frame(brcm->rx_skb);
} else if (len > room) {
BT_ERR("Data length is too large");
kfree_skb(brcm->rx_skb);
} else {
brcm->rx_state = HCIBRCM_W4_DATA;
brcm->rx_count = len;
return len;
}
brcm->rx_state = HCIBRCM_W4_PACKET_TYPE;
brcm->rx_skb = NULL;
brcm->rx_count = 0;
return 0;
}
static inline int ibs_check_data_len(struct ibs_struct *ibs, int len)
{
register int room = skb_tailroom(ibs->rx_skb);
BT_DBG("len %d room %d", len, room);
if (!len) {
hci_recv_frame(ibs->rx_skb);
} else if (len > room) {
BT_ERR("Data length is too large");
kfree_skb(ibs->rx_skb);
} else {
ibs->rx_state = HCI_IBS_W4_DATA;
ibs->rx_count = len;
return len;
}
ibs->rx_state = HCI_IBS_W4_PACKET_TYPE;
ibs->rx_skb = NULL;
ibs->rx_count = 0;
return 0;
}
static inline int bfusb_recv_block(struct bfusb_data *data, int hdr, unsigned char *buf, int len)
{
BT_DBG("bfusb %p hdr 0x%02x data %p len %d", data, hdr, buf, len);
if (hdr & 0x10) {
BT_ERR("%s error in block", data->hdev->name);
kfree_skb(data->reassembly);
data->reassembly = NULL;
return -EIO;
}
if (hdr & 0x04) {
struct sk_buff *skb;
unsigned char pkt_type;
int pkt_len = 0;
if (data->reassembly) {
BT_ERR("%s unexpected start block", data->hdev->name);
kfree_skb(data->reassembly);
data->reassembly = NULL;
}
if (len < 1) {
BT_ERR("%s no packet type found", data->hdev->name);
return -EPROTO;
}
pkt_type = *buf++; len--;
switch (pkt_type) {
case HCI_EVENT_PKT:
if (len >= HCI_EVENT_HDR_SIZE) {
struct hci_event_hdr *hdr = (struct hci_event_hdr *) buf;
pkt_len = HCI_EVENT_HDR_SIZE + hdr->plen;
} else {
BT_ERR("%s event block is too short", data->hdev->name);
return -EILSEQ;
}
break;
case HCI_ACLDATA_PKT:
if (len >= HCI_ACL_HDR_SIZE) {
struct hci_acl_hdr *hdr = (struct hci_acl_hdr *) buf;
pkt_len = HCI_ACL_HDR_SIZE + __le16_to_cpu(hdr->dlen);
} else {
BT_ERR("%s data block is too short", data->hdev->name);
return -EILSEQ;
}
break;
case HCI_SCODATA_PKT:
if (len >= HCI_SCO_HDR_SIZE) {
struct hci_sco_hdr *hdr = (struct hci_sco_hdr *) buf;
pkt_len = HCI_SCO_HDR_SIZE + hdr->dlen;
} else {
BT_ERR("%s audio block is too short", data->hdev->name);
return -EILSEQ;
}
break;
}
skb = bt_skb_alloc(pkt_len, GFP_ATOMIC);
if (!skb) {
BT_ERR("%s no memory for the packet", data->hdev->name);
return -ENOMEM;
}
skb->dev = (void *) data->hdev;
bt_cb(skb)->pkt_type = pkt_type;
data->reassembly = skb;
} else {
if (!data->reassembly) {
BT_ERR("%s unexpected continuation block", data->hdev->name);
return -EIO;
}
}
if (len > 0)
memcpy(skb_put(data->reassembly, len), buf, len);
if (hdr & 0x08) {
hci_recv_frame(data->reassembly);
data->reassembly = NULL;
}
return 0;
}
static int bpa10x_recv(struct hci_dev *hdev, int queue, void *buf, int count)
{
struct bpa10x_data *data = hdev->driver_data;
BT_DBG("%s queue %d buffer %p count %d", hdev->name,
queue, buf, count);
if (queue < 0 || queue > 1)
return -EILSEQ;
hdev->stat.byte_rx += count;
while (count) {
struct sk_buff *skb = data->rx_skb[queue];
struct { __u8 type; int expect; } *scb;
int type, len = 0;
if (!skb) {
/* Start of the frame */
type = *((__u8 *) buf);
count--; buf++;
switch (type) {
case HCI_EVENT_PKT:
if (count >= HCI_EVENT_HDR_SIZE) {
struct hci_event_hdr *h = buf;
len = HCI_EVENT_HDR_SIZE + h->plen;
} else
return -EILSEQ;
break;
case HCI_ACLDATA_PKT:
if (count >= HCI_ACL_HDR_SIZE) {
struct hci_acl_hdr *h = buf;
len = HCI_ACL_HDR_SIZE +
__le16_to_cpu(h->dlen);
} else
return -EILSEQ;
break;
case HCI_SCODATA_PKT:
if (count >= HCI_SCO_HDR_SIZE) {
struct hci_sco_hdr *h = buf;
len = HCI_SCO_HDR_SIZE + h->dlen;
} else
return -EILSEQ;
break;
case HCI_VENDOR_PKT:
if (count >= HCI_VENDOR_HDR_SIZE) {
struct hci_vendor_hdr *h = buf;
len = HCI_VENDOR_HDR_SIZE +
__le16_to_cpu(h->dlen);
} else
return -EILSEQ;
break;
}
skb = bt_skb_alloc(len, GFP_ATOMIC);
if (!skb) {
BT_ERR("%s no memory for packet", hdev->name);
return -ENOMEM;
}
skb->dev = (void *) hdev;
data->rx_skb[queue] = skb;
scb = (void *) skb->cb;
scb->type = type;
scb->expect = len;
} else {
/* Continuation */
scb = (void *) skb->cb;
len = scb->expect;
}
len = min(len, count);
memcpy(skb_put(skb, len), buf, len);
scb->expect -= len;
if (scb->expect == 0) {
/* Complete frame */
data->rx_skb[queue] = NULL;
bt_cb(skb)->pkt_type = scb->type;
hci_recv_frame(skb);
}
count -= len; buf += len;
}
return 0;
}
static void bluecard_receive(struct bluecard_info *info,
unsigned int offset)
{
unsigned int iobase;
unsigned char buf[31];
int i, len;
if (!info) {
BT_ERR("Unknown device");
return;
}
iobase = info->p_dev->resource[0]->start;
if (test_bit(XMIT_SENDING_READY, &(info->tx_state)))
bluecard_enable_activity_led(info);
len = bluecard_read(iobase, offset, buf, sizeof(buf));
for (i = 0; i < len; i++) {
/* Allocate packet */
if (info->rx_skb == NULL) {
info->rx_state = RECV_WAIT_PACKET_TYPE;
info->rx_count = 0;
info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
if (!info->rx_skb) {
BT_ERR("Can't allocate mem for new packet");
return;
}
}
if (info->rx_state == RECV_WAIT_PACKET_TYPE) {
bt_cb(info->rx_skb)->pkt_type = buf[i];
switch (bt_cb(info->rx_skb)->pkt_type) {
case 0x00:
/* init packet */
if (offset != 0x00) {
set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
set_bit(XMIT_SENDING_READY, &(info->tx_state));
bluecard_write_wakeup(info);
}
kfree_skb(info->rx_skb);
info->rx_skb = NULL;
break;
case HCI_EVENT_PKT:
info->rx_state = RECV_WAIT_EVENT_HEADER;
info->rx_count = HCI_EVENT_HDR_SIZE;
break;
case HCI_ACLDATA_PKT:
info->rx_state = RECV_WAIT_ACL_HEADER;
info->rx_count = HCI_ACL_HDR_SIZE;
break;
case HCI_SCODATA_PKT:
info->rx_state = RECV_WAIT_SCO_HEADER;
info->rx_count = HCI_SCO_HDR_SIZE;
break;
default:
/* unknown packet */
BT_ERR("Unknown HCI packet with type 0x%02x received", bt_cb(info->rx_skb)->pkt_type);
info->hdev->stat.err_rx++;
kfree_skb(info->rx_skb);
info->rx_skb = NULL;
break;
}
} else {
*skb_put(info->rx_skb, 1) = buf[i];
info->rx_count--;
if (info->rx_count == 0) {
int dlen;
struct hci_event_hdr *eh;
struct hci_acl_hdr *ah;
struct hci_sco_hdr *sh;
switch (info->rx_state) {
case RECV_WAIT_EVENT_HEADER:
eh = hci_event_hdr(info->rx_skb);
info->rx_state = RECV_WAIT_DATA;
info->rx_count = eh->plen;
break;
case RECV_WAIT_ACL_HEADER:
ah = hci_acl_hdr(info->rx_skb);
dlen = __le16_to_cpu(ah->dlen);
info->rx_state = RECV_WAIT_DATA;
info->rx_count = dlen;
break;
case RECV_WAIT_SCO_HEADER:
sh = hci_sco_hdr(info->rx_skb);
info->rx_state = RECV_WAIT_DATA;
info->rx_count = sh->dlen;
break;
case RECV_WAIT_DATA:
hci_recv_frame(info->hdev, info->rx_skb);
info->rx_skb = NULL;
break;
}
}
}
}
info->hdev->stat.byte_rx += len;
}
/* Recv data */
static int ll_recv(struct hci_uart *hu, const void *data, int count)
{
struct ll_struct *ll = hu->priv;
const char *ptr;
struct hci_event_hdr *eh;
struct hci_acl_hdr *ah;
struct hci_sco_hdr *sh;
int len, type, dlen;
BT_DBG("hu %p count %d rx_state %ld rx_count %ld", hu, count, ll->rx_state, ll->rx_count);
ptr = data;
while (count) {
if (ll->rx_count) {
len = min_t(unsigned int, ll->rx_count, count);
memcpy(skb_put(ll->rx_skb, len), ptr, len);
ll->rx_count -= len; count -= len; ptr += len;
if (ll->rx_count)
continue;
switch (ll->rx_state) {
case HCILL_W4_DATA:
BT_DBG("Complete data");
hci_recv_frame(hu->hdev, ll->rx_skb);
ll->rx_state = HCILL_W4_PACKET_TYPE;
ll->rx_skb = NULL;
continue;
case HCILL_W4_EVENT_HDR:
eh = hci_event_hdr(ll->rx_skb);
BT_DBG("Event header: evt 0x%2.2x plen %d", eh->evt, eh->plen);
ll_check_data_len(hu->hdev, ll, eh->plen);
continue;
case HCILL_W4_ACL_HDR:
ah = hci_acl_hdr(ll->rx_skb);
dlen = __le16_to_cpu(ah->dlen);
BT_DBG("ACL header: dlen %d", dlen);
ll_check_data_len(hu->hdev, ll, dlen);
continue;
case HCILL_W4_SCO_HDR:
sh = hci_sco_hdr(ll->rx_skb);
BT_DBG("SCO header: dlen %d", sh->dlen);
ll_check_data_len(hu->hdev, ll, sh->dlen);
continue;
}
}
/* HCILL_W4_PACKET_TYPE */
switch (*ptr) {
case HCI_EVENT_PKT:
BT_DBG("Event packet");
ll->rx_state = HCILL_W4_EVENT_HDR;
ll->rx_count = HCI_EVENT_HDR_SIZE;
type = HCI_EVENT_PKT;
break;
case HCI_ACLDATA_PKT:
BT_DBG("ACL packet");
ll->rx_state = HCILL_W4_ACL_HDR;
ll->rx_count = HCI_ACL_HDR_SIZE;
type = HCI_ACLDATA_PKT;
break;
case HCI_SCODATA_PKT:
BT_DBG("SCO packet");
ll->rx_state = HCILL_W4_SCO_HDR;
ll->rx_count = HCI_SCO_HDR_SIZE;
type = HCI_SCODATA_PKT;
break;
/* HCILL signals */
case HCILL_GO_TO_SLEEP_IND:
BT_DBG("HCILL_GO_TO_SLEEP_IND packet");
ll_device_want_to_sleep(hu);
ptr++; count--;
continue;
case HCILL_GO_TO_SLEEP_ACK:
/* shouldn't happen */
BT_ERR("received HCILL_GO_TO_SLEEP_ACK (in state %ld)", ll->hcill_state);
ptr++; count--;
continue;
case HCILL_WAKE_UP_IND:
BT_DBG("HCILL_WAKE_UP_IND packet");
ll_device_want_to_wakeup(hu);
ptr++; count--;
continue;
case HCILL_WAKE_UP_ACK:
BT_DBG("HCILL_WAKE_UP_ACK packet");
ll_device_woke_up(hu);
ptr++; count--;
continue;
default:
BT_ERR("Unknown HCI packet type %2.2x", (__u8)*ptr);
hu->hdev->stat.err_rx++;
ptr++; count--;
continue;
}
ptr++; count--;
/* Allocate packet */
ll->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
if (!ll->rx_skb) {
BT_ERR("Can't allocate mem for new packet");
ll->rx_state = HCILL_W4_PACKET_TYPE;
ll->rx_count = 0;
return -ENOMEM;
}
hci_skb_pkt_type(ll->rx_skb) = type;
}
static void btuart_receive(btuart_info_t *info)
{
unsigned int iobase;
int boguscount = 0;
if (!info) {
BT_ERR("Unknown device");
return;
}
iobase = info->p_dev->io.BasePort1;
do {
info->hdev->stat.byte_rx++;
/* Allocate packet */
if (info->rx_skb == NULL) {
info->rx_state = RECV_WAIT_PACKET_TYPE;
info->rx_count = 0;
if (!(info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
BT_ERR("Can't allocate mem for new packet");
return;
}
}
if (info->rx_state == RECV_WAIT_PACKET_TYPE) {
info->rx_skb->dev = (void *) info->hdev;
bt_cb(info->rx_skb)->pkt_type = inb(iobase + UART_RX);
switch (bt_cb(info->rx_skb)->pkt_type) {
case HCI_EVENT_PKT:
info->rx_state = RECV_WAIT_EVENT_HEADER;
info->rx_count = HCI_EVENT_HDR_SIZE;
break;
case HCI_ACLDATA_PKT:
info->rx_state = RECV_WAIT_ACL_HEADER;
info->rx_count = HCI_ACL_HDR_SIZE;
break;
case HCI_SCODATA_PKT:
info->rx_state = RECV_WAIT_SCO_HEADER;
info->rx_count = HCI_SCO_HDR_SIZE;
break;
default:
/* Unknown packet */
BT_ERR("Unknown HCI packet with type 0x%02x received", bt_cb(info->rx_skb)->pkt_type);
info->hdev->stat.err_rx++;
clear_bit(HCI_RUNNING, &(info->hdev->flags));
kfree_skb(info->rx_skb);
info->rx_skb = NULL;
break;
}
} else {
*skb_put(info->rx_skb, 1) = inb(iobase + UART_RX);
info->rx_count--;
if (info->rx_count == 0) {
int dlen;
struct hci_event_hdr *eh;
struct hci_acl_hdr *ah;
struct hci_sco_hdr *sh;
switch (info->rx_state) {
case RECV_WAIT_EVENT_HEADER:
eh = hci_event_hdr(info->rx_skb);
info->rx_state = RECV_WAIT_DATA;
info->rx_count = eh->plen;
break;
case RECV_WAIT_ACL_HEADER:
ah = hci_acl_hdr(info->rx_skb);
dlen = __le16_to_cpu(ah->dlen);
info->rx_state = RECV_WAIT_DATA;
info->rx_count = dlen;
break;
case RECV_WAIT_SCO_HEADER:
sh = hci_sco_hdr(info->rx_skb);
info->rx_state = RECV_WAIT_DATA;
info->rx_count = sh->dlen;
break;
case RECV_WAIT_DATA:
hci_recv_frame(info->rx_skb);
info->rx_skb = NULL;
break;
}
}
}
/* Make sure we don't stay here too long */
if (boguscount++ > 16)
break;
} while (inb(iobase + UART_LSR) & UART_LSR_DR);
}