/**
@brief try to transmit all IPC frames in an skb_txq to CP
@param mld the pointer to a mem_link_device instance
@param dev the pointer to a mem_ipc_device instance
@retval "> 0" accumulated data size written to a circular TXQ
@retval "< 0" an error code
*/
static int tx_frames_to_dev(struct mem_link_device *mld,
struct mem_ipc_device *dev)
{
struct sk_buff_head *skb_txq = dev->skb_txq;
int tx_bytes = 0;
int ret = 0;
while (1) {
struct sk_buff *skb;
skb = skb_dequeue(skb_txq);
if (unlikely(!skb))
break;
ret = txq_write(mld, dev, skb);
if (unlikely(ret < 0)) {
/* Take the skb back to the skb_txq */
skb_queue_head(skb_txq, skb);
break;
}
tx_bytes += ret;
}
return (ret < 0) ? ret : tx_bytes;
}
static int tx_frames_to_dev(struct mem_link_device *mld,
struct mem_ipc_device *dev)
{
struct sk_buff_head *skb_txq = dev->skb_txq;
int tx_bytes = 0;
int ret = 0;
while (1) {
struct sk_buff *skb;
#ifdef DEBUG_MODEM_IF_LINK_TX
u8 *hdr;
u8 ch;
#endif
skb = skb_dequeue(skb_txq);
if (unlikely(!skb))
break;
ret = txq_write(mld, dev, skb);
if (unlikely(ret < 0)) {
/* Take the skb back to the skb_txq */
skb_queue_head(skb_txq, skb);
break;
}
tx_bytes += ret;
#ifdef DEBUG_MODEM_IF_LINK_TX
hdr = skbpriv(skb)->lnk_hdr ? skb->data : NULL;
ch = skbpriv(skb)->sipc_ch;
log_ipc_pkt(ch, LINK, TX, skb, hdr);
#endif
dev_kfree_skb_any(skb);
}
return (ret < 0) ? ret : tx_bytes;
}