diff options
Diffstat (limited to 'drivers/staging/bcm/Transmit.c')
| -rw-r--r-- | drivers/staging/bcm/Transmit.c | 271 |
1 files changed, 0 insertions, 271 deletions
diff --git a/drivers/staging/bcm/Transmit.c b/drivers/staging/bcm/Transmit.c deleted file mode 100644 index 622a482e9826..000000000000 --- a/drivers/staging/bcm/Transmit.c +++ /dev/null @@ -1,271 +0,0 @@ -/** - * @file Transmit.c - * @defgroup tx_functions Transmission - * @section Queueing - * @dot - * digraph transmit1 { - * node[shape=box] - * edge[weight=5;color=red] - * - * bcm_transmit->GetPacketQueueIndex[label="IP Packet"] - * GetPacketQueueIndex->IpVersion4[label="IPV4"] - * GetPacketQueueIndex->IpVersion6[label="IPV6"] - * } - * - * @enddot - * - * @section De-Queueing - * @dot - * digraph transmit2 { - * node[shape=box] - * edge[weight=5;color=red] - * interrupt_service_thread->transmit_packets - * tx_pkt_hdler->transmit_packets - * transmit_packets->CheckAndSendPacketFromIndex - * transmit_packets->UpdateTokenCount - * CheckAndSendPacketFromIndex->PruneQueue - * CheckAndSendPacketFromIndex->IsPacketAllowedForFlow - * CheckAndSendPacketFromIndex->SendControlPacket[label="control pkt"] - * SendControlPacket->bcm_cmd53 - * CheckAndSendPacketFromIndex->SendPacketFromQueue[label="data pkt"] - * SendPacketFromQueue->SetupNextSend->bcm_cmd53 - * } - * @enddot - */ - -#include "headers.h" - -/** - * @ingroup ctrl_pkt_functions - * This function dispatches control packet to the h/w interface - * @return zero(success) or -ve value(failure) - */ -int SendControlPacket(struct bcm_mini_adapter *Adapter, char *pControlPacket) -{ - struct bcm_leader *PLeader = (struct bcm_leader *)pControlPacket; - - BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, TX_CONTROL, DBG_LVL_ALL, "Tx"); - if (!pControlPacket || !Adapter) { - BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, TX_CONTROL, DBG_LVL_ALL, - "Got NULL Control Packet or Adapter"); - return STATUS_FAILURE; - } - if ((atomic_read(&Adapter->CurrNumFreeTxDesc) < - ((PLeader->PLength-1)/MAX_DEVICE_DESC_SIZE)+1)) { - BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, TX_CONTROL, DBG_LVL_ALL, - "NO FREE DESCRIPTORS TO SEND CONTROL PACKET"); - return STATUS_FAILURE; - } - - /* Update the netdevice statistics */ - /* Dump Packet */ - BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, TX_CONTROL, DBG_LVL_ALL, - "Leader Status: %x", PLeader->Status); - BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, TX_CONTROL, DBG_LVL_ALL, - "Leader VCID: %x", PLeader->Vcid); - BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, TX_CONTROL, DBG_LVL_ALL, - "Leader Length: %x", PLeader->PLength); - if (Adapter->device_removed) - return 0; - - if (netif_msg_pktdata(Adapter)) - print_hex_dump(KERN_DEBUG, PFX "tx control: ", DUMP_PREFIX_NONE, - 16, 1, pControlPacket, - PLeader->PLength + LEADER_SIZE, 0); - - Adapter->interface_transmit(Adapter->pvInterfaceAdapter, - pControlPacket, - (PLeader->PLength + LEADER_SIZE)); - - atomic_dec(&Adapter->CurrNumFreeTxDesc); - BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, TX_CONTROL, DBG_LVL_ALL, - "<========="); - return STATUS_SUCCESS; -} - -/** - * @ingroup tx_functions - * This function despatches the IP packets with the given vcid - * to the target via the host h/w interface. - * @return zero(success) or -ve value(failure) - */ -int SetupNextSend(struct bcm_mini_adapter *Adapter, - struct sk_buff *Packet, USHORT Vcid) -{ - int status = 0; - bool bHeaderSupressionEnabled = false; - B_UINT16 uiClassifierRuleID; - u16 QueueIndex = skb_get_queue_mapping(Packet); - struct bcm_packet_info *curr_packet_info = - &Adapter->PackInfo[QueueIndex]; - struct bcm_leader Leader = {0}; - - if (Packet->len > MAX_DEVICE_DESC_SIZE) { - status = STATUS_FAILURE; - goto errExit; - } - - /* Get the Classifier Rule ID */ - uiClassifierRuleID = *((UINT32 *) (Packet->cb) + - SKB_CB_CLASSIFICATION_OFFSET); - - bHeaderSupressionEnabled = curr_packet_info->bHeaderSuppressionEnabled & - Adapter->bPHSEnabled; - - if (Adapter->device_removed) { - status = STATUS_FAILURE; - goto errExit; - } - - status = PHSTransmit(Adapter, &Packet, Vcid, uiClassifierRuleID, - bHeaderSupressionEnabled, - (UINT *)&Packet->len, - curr_packet_info->bEthCSSupport); - - if (status != STATUS_SUCCESS) { - BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, NEXT_SEND, DBG_LVL_ALL, - "PHS Transmit failed..\n"); - goto errExit; - } - - Leader.Vcid = Vcid; - - if (TCP_ACK == *((UINT32 *) (Packet->cb) + SKB_CB_TCPACK_OFFSET)) - Leader.Status = LEADER_STATUS_TCP_ACK; - else - Leader.Status = LEADER_STATUS; - - if (curr_packet_info->bEthCSSupport) { - Leader.PLength = Packet->len; - if (skb_headroom(Packet) < LEADER_SIZE) { - status = skb_cow(Packet, LEADER_SIZE); - if (status) { - BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, NEXT_SEND, - DBG_LVL_ALL, - "bcm_transmit : Failed To Increase headRoom\n"); - goto errExit; - } - } - skb_push(Packet, LEADER_SIZE); - memcpy(Packet->data, &Leader, LEADER_SIZE); - } else { - Leader.PLength = Packet->len - ETH_HLEN; - memcpy((struct bcm_leader *)skb_pull(Packet, - (ETH_HLEN - LEADER_SIZE)), - &Leader, - LEADER_SIZE); - } - - status = Adapter->interface_transmit(Adapter->pvInterfaceAdapter, - Packet->data, - (Leader.PLength + LEADER_SIZE)); - if (status) { - ++Adapter->dev->stats.tx_errors; - if (netif_msg_tx_err(Adapter)) - pr_info(PFX "%s: transmit error %d\n", - Adapter->dev->name, - status); - } else { - struct net_device_stats *netstats = &Adapter->dev->stats; - - curr_packet_info->uiTotalTxBytes += Leader.PLength; - - netstats->tx_bytes += Leader.PLength; - ++netstats->tx_packets; - - curr_packet_info->uiCurrentTokenCount -= Leader.PLength << 3; - curr_packet_info->uiSentBytes += (Packet->len); - curr_packet_info->uiSentPackets++; - curr_packet_info->NumOfPacketsSent++; - - atomic_dec(&curr_packet_info->uiPerSFTxResourceCount); - curr_packet_info->uiThisPeriodSentBytes += Leader.PLength; - } - - atomic_dec(&Adapter->CurrNumFreeTxDesc); - -errExit: - dev_kfree_skb(Packet); - return status; -} - -static int tx_pending(struct bcm_mini_adapter *Adapter) -{ - return (atomic_read(&Adapter->TxPktAvail) - && MINIMUM_PENDING_DESCRIPTORS < - atomic_read(&Adapter->CurrNumFreeTxDesc)) - || Adapter->device_removed || (1 == Adapter->downloadDDR); -} - -/** - * @ingroup tx_functions - * Transmit thread - */ -int tx_pkt_handler(struct bcm_mini_adapter *Adapter) -{ - int status = 0; - - while (!kthread_should_stop()) { - /* FIXME - the timeout looks like workaround - * for racey usage of TxPktAvail - */ - if (Adapter->LinkUpStatus) - wait_event_timeout(Adapter->tx_packet_wait_queue, - tx_pending(Adapter), - msecs_to_jiffies(10)); - else - wait_event_interruptible(Adapter->tx_packet_wait_queue, - tx_pending(Adapter)); - - if (Adapter->device_removed) - break; - - if (Adapter->downloadDDR == 1) { - Adapter->downloadDDR += 1; - status = download_ddr_settings(Adapter); - if (status) - pr_err(PFX "DDR DOWNLOAD FAILED! %d\n", status); - continue; - } - - /* Check end point for halt/stall. */ - if (Adapter->bEndPointHalted == TRUE) { - Bcm_clear_halt_of_endpoints(Adapter); - Adapter->bEndPointHalted = false; - StartInterruptUrb((struct bcm_interface_adapter *) - (Adapter->pvInterfaceAdapter)); - } - - if (Adapter->LinkUpStatus && !Adapter->IdleMode) { - if (atomic_read(&Adapter->TotalPacketCount)) - update_per_sf_desc_cnts(Adapter); - } - - if (atomic_read(&Adapter->CurrNumFreeTxDesc) && - Adapter->LinkStatus == SYNC_UP_REQUEST && - !Adapter->bSyncUpRequestSent) { - - BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, TX_PACKETS, - DBG_LVL_ALL, "Calling LinkMessage"); - LinkMessage(Adapter); - } - - if ((Adapter->IdleMode || Adapter->bShutStatus) && - atomic_read(&Adapter->TotalPacketCount)) { - BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, - TX_PACKETS, DBG_LVL_ALL, - "Device in Low Power mode...waking up"); - Adapter->usIdleModePattern = ABORT_IDLE_MODE; - Adapter->bWakeUpDevice = TRUE; - wake_up(&Adapter->process_rx_cntrlpkt); - } - - transmit_packets(Adapter); - atomic_set(&Adapter->TxPktAvail, 0); - } - - BCM_DEBUG_PRINT(Adapter, DBG_TYPE_TX, TX_PACKETS, DBG_LVL_ALL, - "Exiting the tx thread..\n"); - Adapter->transmit_packet_thread = NULL; - return 0; -} |