/**
* \fn wlanDrvIf_Xmit
* \brief Packets transmission
*
* The network stack calls this function in order to transmit a packet
* through the WLAN interface.
* The packet is inserted to the drver Tx queues and its handling is continued
* after switching to the driver context.
*
* \note
* \param skb - The Linux packet buffer structure
* \param dev - The driver network-interface handle
* \return 0 (= OK)
* \sa
*/
static int wlanDrvIf_Xmit (struct sk_buff *skb, struct net_device *dev)
{
TWlanDrvIfObj *drv = (TWlanDrvIfObj *)NETDEV_GET_PRIVATE(dev);
TTxCtrlBlk * pPktCtrlBlk;
int status;
CL_TRACE_START_L1();
os_profile (drv, 0, 0);
drv->stats.tx_packets++;
drv->stats.tx_bytes += skb->len;
/* Allocate a TxCtrlBlk for the Tx packet and save timestamp, length and packet handle */
pPktCtrlBlk = TWD_txCtrlBlk_Alloc (drv->tCommon.hTWD);
pPktCtrlBlk->tTxDescriptor.startTime = os_timeStampMs(drv); /* remove use of skb->tstamp.off_usec */
pPktCtrlBlk->tTxDescriptor.length = skb->len;
pPktCtrlBlk->tTxPktParams.pInputPkt = skb;
/* Point the first BDL buffer to the Ethernet header, and the second buffer to the rest of the packet */
pPktCtrlBlk->tTxnStruct.aBuf[0] = skb->data;
pPktCtrlBlk->tTxnStruct.aLen[0] = ETHERNET_HDR_LEN;
pPktCtrlBlk->tTxnStruct.aBuf[1] = skb->data + ETHERNET_HDR_LEN;
pPktCtrlBlk->tTxnStruct.aLen[1] = (TI_UINT16)skb->len - ETHERNET_HDR_LEN;
pPktCtrlBlk->tTxnStruct.aLen[2] = 0;
/* Send the packet to the driver for transmission. */
status = txDataQ_InsertPacket (drv->tCommon.hTxDataQ, pPktCtrlBlk,(TI_UINT8)skb->priority);
/* If failed (queue full or driver not running), drop the packet. */
if (status != TI_OK)
{
drv->stats.tx_errors++;
}
os_profile (drv, 1, 0);
CL_TRACE_END_L1("tiwlan_drv.ko", "OS", "TX", "");
return 0;
}
static int xmit_Bridge (struct sk_buff *skb, struct net_device *dev, TIntraBssBridge *pBssBridgeParam)
{
TWlanDrvIfObj *drv = (TWlanDrvIfObj *)NETDEV_GET_PRIVATE(dev);
TTxCtrlBlk * pPktCtrlBlk;
TEthernetHeader *pEthHead = (TEthernetHeader *)(skb->data);
int status;
CL_TRACE_START_L1();
os_profile (drv, 0, 0);
drv->stats.tx_packets++;
drv->stats.tx_bytes += skb->len;
/* Allocate a TxCtrlBlk for the Tx packet and save timestamp, length and packet handle */
pPktCtrlBlk = TWD_txCtrlBlk_Alloc (drv->tCommon.hTWD);
if (pPktCtrlBlk == NULL)
{
drv->stats.tx_errors++;
os_profile (drv, 1, 0);
CL_TRACE_END_L1("tiwlan_drv.ko", "OS", "TX", "");
return 0;
}
/* Set interface type according to net device interface number */
if (drv->tCommon.eIfRole == IF_ROLE_TYPE_AP)
SET_PKT_TYPE_IF_ROLE_AP(pPktCtrlBlk);
else
SET_PKT_TYPE_IF_ROLE_STA(pPktCtrlBlk);
pPktCtrlBlk->tTxDescriptor.startTime = os_timeStampMs(drv); /* remove use of skb->tstamp.off_usec */
pPktCtrlBlk->tTxDescriptor.length = skb->len;
pPktCtrlBlk->tTxPktParams.pInputPkt = skb;
/* Check MGMT packet from hostapd, forward it to the Mgmt-Queue and exit without ethernet header */
if (HTOWLANS(pEthHead->type) == AP_MGMT_ETH_TYPE)
{
/* Copy WLAN header into aPktHdr - format for MGMT packets */
memcpy (pPktCtrlBlk->aPktHdr, skb->data + ETHERNET_HDR_LEN , WLAN_HDR_LEN );
/* Skip ethernet header, send as management frame */
pPktCtrlBlk->tTxPktParams.uPktType = TX_PKT_TYPE_MGMT;
pPktCtrlBlk->tTxnStruct.aBuf[0] = (TI_UINT8 *)pPktCtrlBlk->aPktHdr;
pPktCtrlBlk->tTxnStruct.aLen[0] = WLAN_HDR_LEN;
pPktCtrlBlk->tTxnStruct.aBuf[1] = skb->data + ETHERNET_HDR_LEN + WLAN_HDR_LEN;
pPktCtrlBlk->tTxnStruct.aLen[1] = (TI_UINT16)skb->len - ETHERNET_HDR_LEN - WLAN_HDR_LEN;
pPktCtrlBlk->tTxnStruct.aLen[2] = 0;
pPktCtrlBlk->tTxPktParams.uInputPktLen = skb->len;
pPktCtrlBlk->tTxDescriptor.length = (TI_UINT16)((pPktCtrlBlk->tTxnStruct.aLen[0]) + (pPktCtrlBlk->tTxnStruct.aLen[1]));
status = txMgmtQ_Xmit (drv->tCommon.hTxMgmtQ, pPktCtrlBlk, TI_TRUE);
}
else
{
/* Point the first BDL buffer to the Ethernet header, and the second buffer to the rest of the packet */
pPktCtrlBlk->tTxnStruct.aBuf[0] = skb->data;
pPktCtrlBlk->tTxnStruct.aLen[0] = ETHERNET_HDR_LEN;
pPktCtrlBlk->tTxnStruct.aBuf[1] = skb->data + ETHERNET_HDR_LEN;
pPktCtrlBlk->tTxnStruct.aLen[1] = (TI_UINT16)skb->len - ETHERNET_HDR_LEN;
pPktCtrlBlk->tTxnStruct.aLen[2] = 0;
/* Send the packet to the driver for transmission. */
status = txDataQ_InsertPacket (drv->tCommon.hTxDataQ, pPktCtrlBlk,(TI_UINT8)skb->priority, pBssBridgeParam);
}
/* If failed (queue full or driver not running), drop the packet. */
if (status != TI_OK)
{
drv->stats.tx_errors++;
}
os_profile (drv, 1, 0);
CL_TRACE_END_L1("tiwlan_drv.ko", "OS", "TX", "");
return 0;
}
