int epping_tx_send(adf_nbuf_t skb, epping_adapter_t *pAdapter)
{
adf_nbuf_t nodrop_skb;
EPPING_HEADER *eppingHdr;
A_UINT8 ac = 0;
eppingHdr = (EPPING_HEADER *)adf_nbuf_data(skb);
if (!IS_EPPING_PACKET(eppingHdr)) {
EPPING_LOG(VOS_TRACE_LEVEL_FATAL,
"%s: Recived non endpoint ping packets\n", __func__);
/* no packet to send, cleanup */
adf_nbuf_free(skb);
return -ENOMEM;
}
/* the stream ID is mapped to an access class */
ac = eppingHdr->StreamNo_h;
/* hard coded two ep ids */
if (ac != 0 && ac != 1) {
EPPING_LOG(VOS_TRACE_LEVEL_FATAL,
"%s: ac %d is not mapped to mboxping service\n", __func__, ac);
adf_nbuf_free(skb);
return -ENOMEM;
}
/*
* some EPPING packets cannot be dropped no matter what access class
* it was sent on. A special care has been taken:
* 1. when there is no TX resource, queue the control packets to
* a special queue
* 2. when there is TX resource, send the queued control packets first
* and then other packets
* 3. a timer launches to check if there is queued control packets and
* flush them
*/
/* check the nodrop queue first */
while ((nodrop_skb = adf_nbuf_queue_remove(&pAdapter->nodrop_queue))) {
HTCSetNodropPkt(pAdapter->pEpping_ctx->HTCHandle, TRUE);
if (epping_tx_send_int(nodrop_skb, pAdapter)) {
EPPING_LOG(VOS_TRACE_LEVEL_FATAL,
"%s: nodrop: %p xmit fail\n", __func__, nodrop_skb);
/* fail to xmit so put the nodrop packet to the nodrop queue */
adf_nbuf_queue_insert_head(&pAdapter->nodrop_queue, nodrop_skb);
/* no cookie so free the current skb */
goto tx_fail;
} else {
HTCSetNodropPkt(pAdapter->pEpping_ctx->HTCHandle, FALSE);
EPPING_LOG(VOS_TRACE_LEVEL_INFO,
"%s: nodrop: %p xmit ok\n", __func__, nodrop_skb);
}
}
/* send the original packet */
if (epping_tx_send_int(skb, pAdapter))
goto tx_fail;
return 0;
tx_fail:
if (!IS_EPING_PACKET_NO_DROP(eppingHdr)) {
/* allow to drop the skb so drop it */
adf_nbuf_free(skb);
++pAdapter->stats.tx_dropped;
EPPING_LOG(VOS_TRACE_LEVEL_FATAL,
"%s: Tx skb %p dropped, stats.tx_dropped = %ld\n",
__func__, skb, pAdapter->stats.tx_dropped);
return -ENOMEM;
} else {
EPPING_LOG(VOS_TRACE_LEVEL_FATAL,
"%s: nodrop: %p queued\n", __func__, skb);
adf_nbuf_queue_add(&pAdapter->nodrop_queue, skb);
adf_os_spin_lock_bh(&pAdapter->data_lock);
if (pAdapter->epping_timer_state != EPPING_TX_TIMER_RUNNING) {
pAdapter->epping_timer_state = EPPING_TX_TIMER_RUNNING;
adf_os_timer_mod(&pAdapter->epping_timer, TX_RETRY_TIMEOUT_IN_MS);
}
adf_os_spin_unlock_bh(&pAdapter->data_lock);
}
return 0;
}
A_STATUS hci_test_send(AR_SOFTC_T *ar, struct sk_buff *skb)
#endif
{
int status = A_OK;
int length;
EPPING_HEADER *pHeader;
HTC_PACKET *pPacket;
HTC_TX_TAG htc_tag = AR6K_DATA_PKT_TAG;
#ifdef EXPORT_HCI_BRIDGE_INTERFACE
AR6K_HCI_BRIDGE_INFO *pHcidevInfo = g_pHcidevInfo;
#else
AR6K_HCI_BRIDGE_INFO *pHcidevInfo = (AR6K_HCI_BRIDGE_INFO *)ar->hcidev_info;
#endif
do {
if (NULL == pHcidevInfo) {
status = A_ERROR;
break;
}
if (NULL == pHcidevInfo->pHCIDev) {
status = A_ERROR;
break;
}
if (pHcidevInfo->HciNormalMode) {
/* this interface cannot run when normal WMI is running */
status = A_ERROR;
break;
}
pHeader = (EPPING_HEADER *)A_NETBUF_DATA(skb);
if (!IS_EPPING_PACKET(pHeader)) {
status = A_EINVAL;
break;
}
if (IS_EPING_PACKET_NO_DROP(pHeader)) {
htc_tag = AR6K_CONTROL_PKT_TAG;
}
length = sizeof(EPPING_HEADER) + pHeader->DataLength;
pPacket = AllocHTCStruct(pHcidevInfo);
if (NULL == pPacket) {
status = A_NO_MEMORY;
break;
}
SET_HTC_PACKET_INFO_TX(pPacket,
skb,
A_NETBUF_DATA(skb),
length,
HCI_ACL_TYPE, /* send every thing out as ACL */
htc_tag);
HCI_TransportSendPkt(pHcidevInfo->pHCIDev,pPacket,FALSE);
pPacket = NULL;
} while (FALSE);
return status;
}