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Commit 93711058 authored by Stephen Hemminger's avatar Stephen Hemminger
Browse files

beceem: support multiple queues 



Current kernels have multi-queue support which can be used by
this device. This has the advantage that a single type of traffic
will not block other types.

Signed-off-by: default avatarStephen Hemminger <shemminger@vyatta.com>
parent 20f48653

drivers/staging/bcm/Bcmnet.c

+66 −0
Original line number Diff line number Diff line
@@ -54,6 +54,71 @@ static struct net_device_stats *bcm_get_stats(struct net_device *dev) 
	return netstats;

}



static u16 bcm_select_queue(struct net_device *dev, struct sk_buff *skb)

{

	return ClassifyPacket(netdev_priv(dev), skb);

}





/*******************************************************************

* Function    -	bcm_transmit()

*

* Description - This is the main transmit function for our virtual

*				interface(eth0). It handles the ARP packets. It

*				clones this packet and then Queue it to a suitable

* 		 		Queue. Then calls the transmit_packet().

*

* Parameter   -	 skb - Pointer to the socket buffer structure

*				 dev - Pointer to the virtual net device structure

*

*********************************************************************/



static netdev_tx_t bcm_transmit(struct sk_buff *skb, struct net_device *dev)

{

	PMINI_ADAPTER      Adapter = GET_BCM_ADAPTER(dev);

	u16 qindex = skb_get_queue_mapping(skb);



	if (Adapter->device_removed || !Adapter->LinkUpStatus)

		goto drop;



	if (Adapter->TransferMode != IP_PACKET_ONLY_MODE )

		goto drop;



	if (INVALID_QUEUE_INDEX==qindex)

		goto drop;



	if (Adapter->PackInfo[qindex].uiCurrentPacketsOnHost >= SF_MAX_ALLOWED_PACKETS_TO_BACKUP)

		return NETDEV_TX_BUSY;



	/* Now Enqueue the packet */

	BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, NEXT_SEND, DBG_LVL_ALL,

			"bcm_transmit Enqueueing the Packet To Queue %d",qindex);

	spin_lock(&Adapter->PackInfo[qindex].SFQueueLock);

	Adapter->PackInfo[qindex].uiCurrentBytesOnHost += skb->len;

	Adapter->PackInfo[qindex].uiCurrentPacketsOnHost++;



	*((B_UINT32 *)skb->cb + SKB_CB_LATENCY_OFFSET ) = jiffies;

	ENQUEUEPACKET(Adapter->PackInfo[qindex].FirstTxQueue,

		      Adapter->PackInfo[qindex].LastTxQueue, skb);

	atomic_inc(&Adapter->TotalPacketCount);

	spin_unlock(&Adapter->PackInfo[qindex].SFQueueLock);



	BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, TX_OSAL_DBG, DBG_LVL_ALL,"ENQ: \n");



	/* FIXME - this is racy and incorrect, replace with work queue */

	if (!atomic_read(&Adapter->TxPktAvail)) {

		atomic_set(&Adapter->TxPktAvail, 1);

		wake_up(&Adapter->tx_packet_wait_queue);

	}

	return NETDEV_TX_OK;



 drop:

	dev_kfree_skb(skb);

	return NETDEV_TX_OK;

}







/**

@ingroup init_functions

Register other driver entry points with the kernel
@@ -66,6 +131,7 @@ static const struct net_device_ops bcmNetDevOps = { 
    .ndo_change_mtu	= eth_change_mtu,

    .ndo_set_mac_address = eth_mac_addr,

    .ndo_validate_addr	= eth_validate_addr,

    .ndo_select_queue	= bcm_select_queue,

};



static struct device_type wimax_type = {

drivers/staging/bcm/InterfaceInit.c

+1 −1
Original line number Diff line number Diff line
@@ -188,7 +188,7 @@ usbbcm_device_probe(struct usb_interface *intf, const struct usb_device_id *id) 
	PS_INTERFACE_ADAPTER psIntfAdapter;

	struct net_device *ndev;



	ndev = alloc_etherdev(sizeof(MINI_ADAPTER));

	ndev = alloc_etherdev_mq(sizeof(MINI_ADAPTER), NO_OF_QUEUES);

	if(ndev == NULL) {

		dev_err(&udev->dev, DRV_NAME ": no memory for device\n");

		return -ENOMEM;

drivers/staging/bcm/Prototypes.h

+5 −9
Original line number Diff line number Diff line
@@ -46,13 +46,12 @@ VOID PruneQueueAllSF(PMINI_ADAPTER Adapter); 


INT SearchSfid(PMINI_ADAPTER Adapter,UINT uiSfid);



USHORT GetPacketQueueIndex(PMINI_ADAPTER Adapter, /**<Pointer to the driver control structure */

								struct sk_buff* Packet /**< Pointer to the Packet to be sent*/

								);

USHORT ClassifyPacket(PMINI_ADAPTER Adapter,struct sk_buff* skb);



BOOLEAN MatchSrcPort(S_CLASSIFIER_RULE *pstClassifierRule,USHORT ushSrcPort);

BOOLEAN MatchDestPort(S_CLASSIFIER_RULE *pstClassifierRule,USHORT ushSrcPort);

BOOLEAN MatchProtocol(S_CLASSIFIER_RULE *pstClassifierRule,UCHAR ucProtocol);



VOID

reply_to_arp_request(struct sk_buff *skb  /**<sk_buff of ARP request*/

						);



INT SetupNextSend(PMINI_ADAPTER Adapter, /**<Logical Adapter*/

					struct sk_buff *Packet, /**<data buffer*/
@@ -66,9 +65,6 @@ INT SendControlPacket(PMINI_ADAPTER Adapter, /**<Logical Adapter*/ 
							char *pControlPacket/**<Control Packet*/

							);



INT bcm_transmit(struct sk_buff *skb, 		/**< skb */

					struct net_device *dev 	/**< net device pointer */

					);



int register_networkdev(PMINI_ADAPTER Adapter);

drivers/staging/bcm/Qos.c

+0 −30
Original line number Diff line number Diff line
@@ -4,13 +4,6 @@ This file contains the routines related to Quality of Service. 
*/

#include "headers.h"



BOOLEAN MatchSrcIpAddress(S_CLASSIFIER_RULE *pstClassifierRule,ULONG ulSrcIP);

BOOLEAN MatchTos(S_CLASSIFIER_RULE *pstClassifierRule,UCHAR ucTypeOfService);

BOOLEAN MatchSrcPort(S_CLASSIFIER_RULE *pstClassifierRule,USHORT ushSrcPort);

BOOLEAN MatchDestPort(S_CLASSIFIER_RULE *pstClassifierRule,USHORT ushDestPort);

BOOLEAN MatchProtocol(S_CLASSIFIER_RULE *pstClassifierRule,UCHAR ucProtocol);

BOOLEAN MatchDestIpAddress(S_CLASSIFIER_RULE *pstClassifierRule,ULONG ulDestIP);

USHORT ClassifyPacket(PMINI_ADAPTER Adapter,struct sk_buff* skb);

void EThCSGetPktInfo(PMINI_ADAPTER Adapter,PVOID pvEthPayload,PS_ETHCS_PKT_INFO pstEthCsPktInfo);

BOOLEAN EThCSClassifyPkt(PMINI_ADAPTER Adapter,struct sk_buff* skb,PS_ETHCS_PKT_INFO pstEthCsPktInfo,S_CLASSIFIER_RULE *pstClassifierRule, B_UINT8 EthCSCupport);
@@ -312,29 +305,6 @@ USHORT IpVersion4(PMINI_ADAPTER Adapter, /**< Pointer to the driver control stru 


	return bClassificationSucceed;

}

/**

@ingroup tx_functions

@return  Queue Index based on priority.

*/

USHORT GetPacketQueueIndex(PMINI_ADAPTER Adapter, /**<Pointer to the driver control structure */

								struct sk_buff* Packet /**< Pointer to the Packet to be sent*/

								)

{

	USHORT			usIndex=-1;

	BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, QUEUE_INDEX, DBG_LVL_ALL, "=====>");



	if(NULL==Adapter || NULL==Packet)

	{

		BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, QUEUE_INDEX, DBG_LVL_ALL, "Got NULL Values<======");

		return -1;

	}



	usIndex = ClassifyPacket(Adapter,Packet);



	BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, QUEUE_INDEX, DBG_LVL_ALL, "Got Queue Index %x",usIndex);

	BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, QUEUE_INDEX, DBG_LVL_ALL, "GetPacketQueueIndex <==============");

	return usIndex;

}



VOID PruneQueueAllSF(PMINI_ADAPTER Adapter)

{

drivers/staging/bcm/Transmit.c

+0 −61
Original line number Diff line number Diff line
@@ -35,67 +35,6 @@ SendPacketFromQueue->SetupNextSend->bcm_cmd53 


#include "headers.h"



/*******************************************************************

* Function    -	bcm_transmit()

*

* Description - This is the main transmit function for our virtual

*				interface(eth0). It handles the ARP packets. It

*				clones this packet and then Queue it to a suitable

* 		 		Queue. Then calls the transmit_packet().

*

* Parameter   -	 skb - Pointer to the socket buffer structure

*				 dev - Pointer to the virtual net device structure

*

* Returns     -	 zero (success) or -ve value (failure)

*

*********************************************************************/



netdev_tx_t bcm_transmit(struct sk_buff *skb, struct net_device *dev)

{

	PMINI_ADAPTER      	Adapter = GET_BCM_ADAPTER(dev);

	SHORT qindex;



	if (Adapter->device_removed || !Adapter->LinkUpStatus)

		goto drop;



	if (Adapter->TransferMode != IP_PACKET_ONLY_MODE )

		goto drop;



	qindex = GetPacketQueueIndex(Adapter, skb);



	if (INVALID_QUEUE_INDEX==qindex)

		goto drop;



	if (Adapter->PackInfo[qindex].uiCurrentPacketsOnHost >= SF_MAX_ALLOWED_PACKETS_TO_BACKUP)

		return NETDEV_TX_BUSY;



	/* Now Enqueue the packet */

	BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, NEXT_SEND, DBG_LVL_ALL,

			"bcm_transmit Enqueueing the Packet To Queue %d",qindex);

	spin_lock(&Adapter->PackInfo[qindex].SFQueueLock);

	Adapter->PackInfo[qindex].uiCurrentBytesOnHost += skb->len;

	Adapter->PackInfo[qindex].uiCurrentPacketsOnHost++;



	*((B_UINT32 *)skb->cb + SKB_CB_LATENCY_OFFSET ) = jiffies;

	ENQUEUEPACKET(Adapter->PackInfo[qindex].FirstTxQueue,

		      Adapter->PackInfo[qindex].LastTxQueue, skb);

	atomic_inc(&Adapter->TotalPacketCount);

	spin_unlock(&Adapter->PackInfo[qindex].SFQueueLock);



	BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, TX_OSAL_DBG, DBG_LVL_ALL,"ENQ: \n");



	/* FIXME - this is racy and incorrect, replace with work queue */

	if (!atomic_read(&Adapter->TxPktAvail)) {

		atomic_set(&Adapter->TxPktAvail, 1);

		wake_up(&Adapter->tx_packet_wait_queue);

	}

	return NETDEV_TX_OK;



 drop:

	dev_kfree_skb(skb);

	return NETDEV_TX_OK;

}





/**

@ingroup ctrl_pkt_functions