Ralink_WIFI_TX_RX流程分析资源-CSDN文库

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Ralink WIFI Tx Rx 󱊶󱾀󰴅

󱊶󱾀󰴅󱊶󱾀󰴅

󱊶󱾀󰴅

380939960@qq.com

󱱣󰓊

󱱣󰓊󱱣󰓊

󱱣󰓊

1. Rx 󱥻󱊶󱾀 .............................................................................................................................................................. 2

1.1 APHandleRxDataFrame ...................................................................................................................................... 14

1.2 APHandleRxMgmtFrame ................................................................................................................................... 17

1.3 APHandleRxControlFrame ................................................................................................................................. 20

2. Tx 󱥻󱊶󱾀 ............................................................................................................................................................. 23

2.1 rt28xx_send_packets 󰅻󰫥󰣣󳮔 ............................................................................................................ 23

2.2 APHardTransmit 󰅻󰫥󰣣󳮔󳓡󱽰 Ringbuffer .......................................................................................... 36

1. Rx 󱥻󱊶󱾀

󱥻󱊶󱾀󱥻󱊶󱾀

󱥻󱊶󱾀

󳕎󳝁󲝩󰴅󳿦󱯹 Rx 󱊶󱾀

1 󰐊󰆷󱷡󰤚󰪫󰎜

2 󱷡󲽛󰬢

3 󰬢󱥻󰫥 rt2860_interrupt 󲸠󳅸󱪝

4 󰬢󱥻󰫥󱤥󰓈󰮤 Rx 󰬢󱚫󳅸󰐛󰬢󰐊󳙝󱥻󰫥 rx_done_workq󲖁 rx_done_workq 󳕐󱃚

󳅸󱪝 APRxDoneInterruptHandle

RX 󰬢󰐊󳙝󱥻󰫥󱯹󳄳󲓣󳅸󱪝󰞵󱺯

 ifconfig ra0 up󰭫󰫥 RtmpNetTaskInit 󳖏󳔼 RTMP_OS_TASKLET_INIT(pAd, &pObj->rx_done_work,

rx_done_workq)󳄳󲓣󰬢󰐊󳙝󱥻󰫥 rx_done_workq

 ifconfig ra0 down󰭫󰫥 RtmpNetTaskExit 󳖏󳔼 RTMP_OS_TASKLET_KILL(&pObj->rx_done_task)󱋽󰬢

󰐊󳙝󱥻󰫥󲗉

   󰬢  󱥻  󰫥 RTMPHandleInterrupt    󰴑 󰪫  󱯹  󰬢 󰮤 RX  󰬢   󳖏 󳔼

RTMP_OS_TASKLET_SCHE(&pObj->rx_done_work);󳅸󱪝󰬢󰐊󳙝󱥻󰫥 rx_done_workq 󱾂󰟜󲷁

 󰬢󰐊󳙝󱥻󰫥 rx_done_workq 󳅸󱪝 APRxDoneInterruptHandle 󳕐󲷁󰄓󳮺󱯹󰫥󰣣󱥻

BOOLEAN APRxDoneInterruptHandle(

IN PRTMP_ADAPTER pAd)

{

……

#ifdef VENDOR_FEATURE1_SUPPORT

Note:

Can not take off the NICUpdateFifoStaCounters(); Or the

FIFO overflow rate will be high, i.e. > 3%

(see the rate by "iwpriv ra0 show stainfo")

Based on different platform, try to find the best value to

replace '4' here (overflow rate target is about 0%).

if (++pAd->FifoUpdateDone >= 4)

{

NICUpdateFifoStaCounters(pAd);

pAd->FifoUpdateDone = 0;

}

#else

NICUpdateFifoStaCounters(pAd);

#endif /* VENDOR_FEATURE1_SUPPORT */

BOOLEAN RTMPFreeTXDUponTxDmaDone(

rt28xx_open 



 rt28xx_init 



 RtmpNetTaskInit 



 󰞵󱺯

󰞵󱺯󰞵󱺯

󰞵󱺯



󳄳󲓣󰤚󰪫󳅸󰫥

󳄳󲓣󰤚󰪫󳅸󰫥󳄳󲓣󰤚󰪫󳅸󰫥

󳄳󲓣󰤚󰪫󳅸󰫥

RTMP_OS_TASKLET_INIT(pAd, &pObj->rx_done_task, rx_done_tasklet, (unsigned long)pAd);

󳿦󰬢󱥻󰫥 RTMPHandleInterrupt 󳖏󳔼󰫥󳖏󱵚󲉰󲑔󳳗󳅸󱪝󰬢󰐊󳙝󱥻󰫥󳅚󰫥

󱥻󰤚󰪫󱯹 WIFI 󰎜󲖁 RTMPHandleInterrupt 󱪦󲸠󰬢󱥻󰫥 rt2860_interrupt 󳅸󱪝

#ifdef WORKQUEUE_BH

RTMP_OS_TASKLET_SCHE(&pObj->rx_done_work);

#else

RTMP_OS_TASKLET_SCHE(&pObj->rx_done_task);

#endif /* WORKQUEUE_BH */

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

* interrupt handler related procedures.

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

/*int print_int_count; */

IRQ_HANDLE_TYPE

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,19))

rt2860_interrupt(int irq, void *dev_instance)

#else

rt2860_interrupt(int irq, void *dev_instance, struct pt_regs *regs)

#endif

{

struct net_device *net_dev = (struct net_device *) dev_instance;

VOID *pAd = NULL;

/* INT_SOURCE_CSR_STRUC IntSource; */

/* POS_COOKIE pObj; */

#ifdef MULTI_CORE_SUPPORT

unsigned long flags=0;

#endif // MULTI_CORE_SUPPORT //

GET_PAD_FROM_NET_DEV(pAd, net_dev);

RTMPHandleInterrupt(pAd);

#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)

return IRQ_HANDLED;

#endif

}

󳱵󲻶󳅩󰮃󱯹󰮤Ralink wifi driver 󰪤󰡶󱽂󰖰󲐴 RBus  PCIRBus 󰮤 MT7620 󰳴󰃅󲝟󰎛󱯹 2.4G 󱯹 wifi PCI 󳖏󰎭󲙲󰮤 PCI 󰶱󰒄󱯹󲓆

󰞋󲕺 MT7620 󳖏󳔼 PCI 󰖰󲐴󰤚 ralink 󲠤󱞼󰳚󳸒󰄓󱤥 5G WIFI 󲙲

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还可以,就是感觉有点乱
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又遇到大坑，如何处理，有人帮忙吗？

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