---
drivers/staging/rtl8192su/ieee80211/ieee80211_tx.c | 429 ++++++++++----------
1 files changed, 206 insertions(+), 223 deletions(-)
diff --git a/drivers/staging/rtl8192su/ieee80211/ieee80211_tx.c
b/drivers/staging/rtl8192su/ieee80211/ieee80211_tx.c
index 484c3ab..1a41809 100644
--- a/drivers/staging/rtl8192su/ieee80211/ieee80211_tx.c
+++ b/drivers/staging/rtl8192su/ieee80211/ieee80211_tx.c
@@ -32,7 +32,7 @@
******************************************************************************/
#include <linux/compiler.h>
-//#include <linux/config.h>
+/* #include <linux/config.h> */
#include <linux/errno.h>
#include <linux/if_arp.h>
#include <linux/in6.h>
@@ -49,7 +49,7 @@
#include <linux/types.h>
#include <linux/wireless.h>
#include <linux/etherdevice.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
#include <linux/if_vlan.h>
#include "ieee80211.h"
@@ -70,11 +70,11 @@ val | 0 | 0 | 0 | 1 | x | 0 | 0 | 0 | 1 |
0 | x | x | x
desc | ^-ver-^ | ^type-^ | ^-----subtype-----^ | to |from |more |retry|
pwr |more |wep |
| | | x=0 data,x=1 data+ack | DS | DS |frag | |
mgm |data | |
'-----------------------------------------------------------------------------------------'
- /\
- |
+ /\
+ |
802.11 Data Frame |
- ,--------- 'ctrl' expands to >-----------'
- |
+ ,--------- 'ctrl' expands to >-----------'
+ |
,--'---,-------------------------------------------------------------.
Bytes | 2 | 2 | 6 | 6 | 6 | 2 | 0..2312 | 4 |
|------|------|---------|---------|---------|------|---------|------|
@@ -82,7 +82,7 @@ Desc. | ctrl | dura | DA/RA | TA | SA | Sequ |
Frame | fcs |
| | tion | (BSSID) | | | ence | data | |
`--------------------------------------------------| |------'
Total: 28 non-data bytes `----.----'
- |
+ |
.- 'Frame data' expands to <---------------------------'
|
V
@@ -94,7 +94,7 @@ Desc. | SNAP | SNAP | Control |Eth Tunnel| Type | IP |
| 0xAA | 0xAA |0x03 (UI)|0x00-00-F8| | |
`-----------------------------------------| |
Total: 8 non-data bytes `----.----'
- |
+ |
.- 'IP Packet' expands, if WEP enabled, to <--'
|
V
@@ -183,12 +183,11 @@ int ieee80211_encrypt_fragment(
struct sk_buff *frag,
int hdr_len)
{
- struct ieee80211_crypt_data* crypt = ieee->crypt[ieee->tx_keyidx];
+ struct ieee80211_crypt_data *crypt = ieee->crypt[ieee->tx_keyidx];
int res;
- if (!(crypt && crypt->ops))
- {
- printk("=========>%s(), crypt is null\n", __FUNCTION__);
+ if (!(crypt && crypt->ops)) {
+ printk(KERN_INFO "%s(), crypt is null\n", __func__);
return -1;
}
#ifdef CONFIG_IEEE80211_CRYPT_TKIP
@@ -208,8 +207,10 @@ int ieee80211_encrypt_fragment(
/* To encrypt, frame format is:
* IV (4 bytes), clear payload (including SNAP), ICV (4 bytes) */
- // PR: FIXME: Copied from hostap. Check fragmentation/MSDU/MPDU
encryption.
- /* Host-based IEEE 802.11 fragmentation for TX is not yet supported, so
+ /* PR: FIXME: Copied from hostap. Check
+ * fragmentation/MSDU/MPDU encryption. */
+ /* Host-based IEEE 802.11 fragmentation
+ * for TX is not yet supported, so
* call both MSDU and MPDU encryption functions from here. */
atomic_inc(&crypt->refcnt);
res = 0;
@@ -230,8 +231,9 @@ int ieee80211_encrypt_fragment(
}
-void ieee80211_txb_free(struct ieee80211_txb *txb) {
- //int i;
+void ieee80211_txb_free(struct ieee80211_txb *txb)
+{
+ /* int i; */
if (unlikely(!txb))
return;
kfree(txb);
@@ -243,7 +245,7 @@ struct ieee80211_txb *ieee80211_alloc_txb(int nr_frags, int
txb_size,
struct ieee80211_txb *txb;
int i;
txb = kmalloc(
- sizeof(struct ieee80211_txb) + (sizeof(u8*) * nr_frags),
+ sizeof(struct ieee80211_txb) + (sizeof(u8 *) * nr_frags),
gfp_mask);
if (!txb)
return NULL;
@@ -269,8 +271,8 @@ struct ieee80211_txb *ieee80211_alloc_txb(int nr_frags, int
txb_size,
return txb;
}
-// Classify the to-be send data packet
-// Need to acquire the sent queue index.
+/* Classify the to-be send data packet
+ * Need to acquire the sent queue index. */
static int
ieee80211_classify(struct sk_buff *skb, struct ieee80211_network *network)
{
@@ -280,124 +282,112 @@ ieee80211_classify(struct sk_buff *skb, struct
ieee80211_network *network)
if (eth->h_proto != htons(ETH_P_IP))
return 0;
-// IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len);
+/* IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, skb->data, skb->len); */
ip = ip_hdr(skb);
switch (ip->tos & 0xfc) {
- case 0x20:
- return 2;
- case 0x40:
- return 1;
- case 0x60:
- return 3;
- case 0x80:
- return 4;
- case 0xa0:
- return 5;
- case 0xc0:
- return 6;
- case 0xe0:
- return 7;
- default:
- return 0;
+ case 0x20:
+ return 2;
+ case 0x40:
+ return 1;
+ case 0x60:
+ return 3;
+ case 0x80:
+ return 4;
+ case 0xa0:
+ return 5;
+ case 0xc0:
+ return 6;
+ case 0xe0:
+ return 7;
+ default:
+ return 0;
}
}
-void ieee80211_tx_query_agg_cap(struct ieee80211_device* ieee, struct sk_buff*
skb, cb_desc* tcb_desc)
+void ieee80211_tx_query_agg_cap(struct ieee80211_device *ieee, struct sk_buff
*skb, cb_desc *tcb_desc)
{
PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo;
PTX_TS_RECORD pTxTs = NULL;
- struct ieee80211_hdr_1addr* hdr = (struct
ieee80211_hdr_1addr*)skb->data;
+ struct ieee80211_hdr_1addr* hdr = (struct ieee80211_hdr_1addr
*)skb->data;
- if (!pHTInfo->bCurrentHTSupport||!pHTInfo->bEnableHT)
+ if (!pHTInfo->bCurrentHTSupport || !pHTInfo->bEnableHT)
return;
if (!IsQoSDataFrame(skb->data))
return;
if (is_multicast_ether_addr(hdr->addr1) ||
is_broadcast_ether_addr(hdr->addr1))
return;
- //check packet and mode later
+ /* check packet and mode later */
#ifdef TO_DO_LIST
- if(pTcb->PacketLength >= 4096)
+ if (pTcb->PacketLength >= 4096)
return;
- // For RTL819X, if pairwisekey = wep/tkip, we don't aggrregation.
- if(!Adapter->HalFunc.GetNmodeSupportBySecCfgHandler(Adapter))
+ /* For RTL819X, if pairwisekey = wep/tkip, we don't aggrregation. */
+ if (!Adapter->HalFunc.GetNmodeSupportBySecCfgHandler(Adapter))
return;
#endif
- if(pHTInfo->IOTAction & HT_IOT_ACT_TX_NO_AGGREGATION)
+ if (pHTInfo->IOTAction & HT_IOT_ACT_TX_NO_AGGREGATION)
return;
#if 1
- if(!ieee->GetNmodeSupportBySecCfg(ieee->dev))
- {
+ if (!ieee->GetNmodeSupportBySecCfg(ieee->dev))
return;
- }
#endif
- if(pHTInfo->bCurrentAMPDUEnable)
- {
- if (!GetTs(ieee, (PTS_COMMON_INFO*)(&pTxTs), hdr->addr1,
skb->priority, TX_DIR, true))
- {
- printk("===>can't get TS\n");
+ if (pHTInfo->bCurrentAMPDUEnable) {
+ if (!GetTs(ieee, (PTS_COMMON_INFO *)(&pTxTs), hdr->addr1,
skb->priority, TX_DIR, true)) {
+ printk(KERN_INFO "can't get TS\n");
return;
}
- if (pTxTs->TxAdmittedBARecord.bValid == false)
- {
- //as some AP will refuse our action frame until key
handshake has been finished. WB
+ if (pTxTs->TxAdmittedBARecord.bValid == false) {
+ /* as some AP will refuse our action frame
+ * until key handshake has been finished. WB */
if (ieee->wpa_ie_len && (ieee->pairwise_key_type ==
KEY_TYPE_NA))
- ;
- else
+ else
TsStartAddBaProcess(ieee, pTxTs);
goto FORCED_AGG_SETTING;
- }
- else if (pTxTs->bUsingBa == false)
- {
+ } else if (pTxTs->bUsingBa == false) {
if
(SN_LESS(pTxTs->TxAdmittedBARecord.BaStartSeqCtrl.field.SeqNum,
(pTxTs->TxCurSeq+1)%4096))
pTxTs->bUsingBa = true;
else
goto FORCED_AGG_SETTING;
}
- if (ieee->iw_mode == IW_MODE_INFRA)
- {
+ if (ieee->iw_mode == IW_MODE_INFRA) {
tcb_desc->bAMPDUEnable = true;
tcb_desc->ampdu_factor = pHTInfo->CurrentAMPDUFactor;
tcb_desc->ampdu_density = pHTInfo->CurrentMPDUDensity;
}
}
FORCED_AGG_SETTING:
- switch(pHTInfo->ForcedAMPDUMode )
- {
- case HT_AGG_AUTO:
- break;
+ switch (pHTInfo->ForcedAMPDUMode) {
+ case HT_AGG_AUTO:
+ break;
- case HT_AGG_FORCE_ENABLE:
+ case HT_AGG_FORCE_ENABLE:
tcb_desc->bAMPDUEnable = true;
tcb_desc->ampdu_density = pHTInfo->ForcedMPDUDensity;
tcb_desc->ampdu_factor = pHTInfo->ForcedAMPDUFactor;
- break;
+ break;
- case HT_AGG_FORCE_DISABLE:
+ case HT_AGG_FORCE_DISABLE:
tcb_desc->bAMPDUEnable = false;
tcb_desc->ampdu_density = 0;
tcb_desc->ampdu_factor = 0;
- break;
+ break;
}
- return;
+ return;
}
-extern void ieee80211_qurey_ShortPreambleMode(struct ieee80211_device* ieee,
cb_desc* tcb_desc)
+extern void ieee80211_qurey_ShortPreambleMode(struct ieee80211_device *ieee,
cb_desc *tcb_desc)
{
tcb_desc->bUseShortPreamble = false;
if (tcb_desc->data_rate == 2)
- {//// 1M can only use Long Preamble. 11B spec
return;
- }
+ /* 1M can only use Long Preamble. 11B spec */
else if (ieee->current_network.capability &
WLAN_CAPABILITY_SHORT_PREAMBLE)
- {
tcb_desc->bUseShortPreamble = true;
- }
return;
}
extern void
@@ -405,145 +395,145 @@ ieee80211_query_HTCapShortGI(struct ieee80211_device
*ieee, cb_desc *tcb_desc)
{
PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo;
- tcb_desc->bUseShortGI = false;
+ tcb_desc->bUseShortGI = false;
- if(!pHTInfo->bCurrentHTSupport||!pHTInfo->bEnableHT)
+ if (!pHTInfo->bCurrentHTSupport || !pHTInfo->bEnableHT)
return;
- if(pHTInfo->bForcedShortGI)
- {
+ if (pHTInfo->bForcedShortGI) {
tcb_desc->bUseShortGI = true;
return;
}
- if((pHTInfo->bCurBW40MHz==true) && pHTInfo->bCurShortGI40MHz)
+ if ((pHTInfo->bCurBW40MHz == true) && pHTInfo->bCurShortGI40MHz)
tcb_desc->bUseShortGI = true;
- else if((pHTInfo->bCurBW40MHz==false) && pHTInfo->bCurShortGI20MHz)
+ else if ((pHTInfo->bCurBW40MHz == false) && pHTInfo->bCurShortGI20MHz)
tcb_desc->bUseShortGI = true;
}
-void ieee80211_query_BandwidthMode(struct ieee80211_device* ieee, cb_desc
*tcb_desc)
+void ieee80211_query_BandwidthMode(struct ieee80211_device *ieee, cb_desc
*tcb_desc)
{
PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo;
tcb_desc->bPacketBW = false;
- if(!pHTInfo->bCurrentHTSupport||!pHTInfo->bEnableHT)
+ if (!pHTInfo->bCurrentHTSupport || !pHTInfo->bEnableHT)
return;
- if(tcb_desc->bMulticast || tcb_desc->bBroadcast)
+ if (tcb_desc->bMulticast || tcb_desc->bBroadcast)
return;
- if((tcb_desc->data_rate & 0x80)==0) // If using legacy rate, it shall
use 20MHz channel.
+ if ((tcb_desc->data_rate & 0x80) == 0) /* If using legacy rate, it
shall use 20MHz channel. */
return;
- //BandWidthAutoSwitch is for auto switch to 20 or 40 in long distance
- if(pHTInfo->bCurBW40MHz && pHTInfo->bCurTxBW40MHz &&
!ieee->bandwidth_auto_switch.bforced_tx20Mhz)
+ /* BandWidthAutoSwitch is for auto
+ * switch to 20 or 40 in long distance */
+ if (pHTInfo->bCurBW40MHz && pHTInfo->bCurTxBW40MHz &&
!ieee->bandwidth_auto_switch.bforced_tx20Mhz)
tcb_desc->bPacketBW = true;
return;
}
-void ieee80211_query_protectionmode(struct ieee80211_device* ieee, cb_desc*
tcb_desc, struct sk_buff* skb)
+void ieee80211_query_protectionmode(struct ieee80211_device *ieee, cb_desc
*tcb_desc, struct sk_buff *skb)
{
- // Common Settings
+ /* Common Settings */
tcb_desc->bRTSSTBC = false;
- tcb_desc->bRTSUseShortGI = false; // Since protection
frames are always sent by legacy rate, ShortGI will never be used.
- tcb_desc->bCTSEnable = false; // Most of protection
using RTS/CTS
- tcb_desc->RTSSC = 0; // 20MHz: Don't
care; 40MHz: Duplicate.
- tcb_desc->bRTSBW = false; // RTS frame bandwidth
is always 20MHz
-
- if(tcb_desc->bBroadcast || tcb_desc->bMulticast)//only unicast frame
will use rts/cts
+ tcb_desc->bRTSUseShortGI = false;
+ /* Since protection frames are always sent by
+ * legacy rate, ShortGI will never be used. */
+ tcb_desc->bCTSEnable = false;
+ /* Most of protection using RTS/CTS */
+ tcb_desc->RTSSC = 0;
+ /* 20MHz: Don't care; 40MHz: Duplicate. */
+ tcb_desc->bRTSBW = false;
+ /* RTS frame bandwidth is always 20MHz */
+
+ if (tcb_desc->bBroadcast || tcb_desc->bMulticast)
return;
+ /* only unicast frame will use rts/cts */
- if (is_broadcast_ether_addr(skb->data+16)) //check addr3 as
infrastructure add3 is DA.
+ if (is_broadcast_ether_addr(skb->data+16))
return;
-
- if (ieee->mode < IEEE_N_24G) //b, g mode
- {
- // (1) RTS_Threshold is compared to the MPDU, not MSDU.
- // (2) If there are more than one frag in this MSDU,
only the first frag uses protection frame.
- // Other fragments are protected by
previous fragment.
- // So we only need to check the length of
first fragment.
- if (skb->len > ieee->rts)
- {
+ /*check addr3 as infrastructure add3 is DA. */
+
+ if (ieee->mode < IEEE_N_24G) {
+ /* b, g mode
+ /* (1) RTS_Threshold is compared to the MPDU, not MSDU.
+ (2) If there are more than one frag in this MSDU,
+ *only the first frag uses protection frame.
+ * Other fragments are protected by previous fragment.
+ * So we only need to check
+ * the length of first fragment. */
+ if (skb->len > ieee->rts) {
tcb_desc->bRTSEnable = true;
tcb_desc->rts_rate = MGN_24M;
- }
- else if (ieee->current_network.buseprotection)
- {
- // Use CTS-to-SELF in protection mode.
+ } else if (ieee->current_network.buseprotection) {
+ /* Use CTS-to-SELF in protection mode. */
tcb_desc->bRTSEnable = true;
tcb_desc->bCTSEnable = true;
tcb_desc->rts_rate = MGN_24M;
}
- //otherwise return;
+ /* otherwise return; */
return;
- }
- else
- {// 11n High throughput case.
+ } else {
+ /* 11n High throughput case. */
PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo;
- while (true)
- {
- //check IOT action
- if(pHTInfo->IOTAction & HT_IOT_ACT_FORCED_CTS2SELF)
- {
- tcb_desc->bCTSEnable = true;
- tcb_desc->rts_rate = MGN_24M;
+ while (true) {
+ /* check IOT action */
+ if (pHTInfo->IOTAction & HT_IOT_ACT_FORCED_CTS2SELF) {
+ tcb_desc->bCTSEnable = true;
+ tcb_desc->rts_rate = MGN_24M;
tcb_desc->bRTSEnable = false;
break;
- }
- else if(pHTInfo->IOTAction &
(HT_IOT_ACT_FORCED_RTS|HT_IOT_ACT_PURE_N_MODE))
- {
+ } else if (pHTInfo->IOTAction &
(HT_IOT_ACT_FORCED_RTS|HT_IOT_ACT_PURE_N_MODE)) {
tcb_desc->bRTSEnable = true;
- tcb_desc->rts_rate = MGN_24M;
+ tcb_desc->rts_rate = MGN_24M;
break;
}
- //check ERP protection
- if (ieee->current_network.buseprotection)
- {// CTS-to-SELF
+ /* check ERP protection */
+ if (ieee->current_network.buseprotection) {
tcb_desc->bRTSEnable = true;
tcb_desc->bCTSEnable = true;
tcb_desc->rts_rate = MGN_24M;
break;
}
- //check HT op mode
- if(pHTInfo->bCurrentHTSupport && pHTInfo->bEnableHT)
- {
+ /* check HT op mode */
+ if (pHTInfo->bCurrentHTSupport && pHTInfo->bEnableHT) {
u8 HTOpMode = pHTInfo->CurrentOpMode;
- if((pHTInfo->bCurBW40MHz && (HTOpMode == 2 ||
HTOpMode == 3)) ||
- (!pHTInfo->bCurBW40MHz
&& HTOpMode == 3) )
- {
- tcb_desc->rts_rate = MGN_24M; // Rate
is 24Mbps.
+ if ((pHTInfo->bCurBW40MHz && (HTOpMode == 2 ||
HTOpMode == 3)) ||
+ (!pHTInfo->bCurBW40MHz
&& HTOpMode == 3)) {
+ tcb_desc->rts_rate = MGN_24M;
+ /* Rate is 24Mbps. */
tcb_desc->bRTSEnable = true;
break;
}
}
- //check rts
- if (skb->len > ieee->rts)
- {
- tcb_desc->rts_rate = MGN_24M; // Rate is 24Mbps.
+ /* check rts */
+ if (skb->len > ieee->rts) {
+ tcb_desc->rts_rate = MGN_24M;
+ /* Rate is 24Mbps. */
tcb_desc->bRTSEnable = true;
break;
}
- //to do list: check MIMO power save condition.
- //check AMPDU aggregation for TXOP
- if(tcb_desc->bAMPDUEnable)
- {
- tcb_desc->rts_rate = MGN_24M; // Rate is 24Mbps.
- // According to 8190 design, firmware sends
CF-End only if RTS/CTS is enabled. However, it degrads
- // throughput around 10M, so we disable of this
mechanism. 2007.08.03 by Emily
+ /* to do list: check MIMO power save condition.
+ * check AMPDU aggregation for TXOP */
+ if (tcb_desc->bAMPDUEnable) {
+ tcb_desc->rts_rate = MGN_24M;
+ /* According to 8190 design,
+ * firmware sends CF-End only
+ * if RTS/CTS is enabled. However, it degrads
+ * throughput around 10M, so we disable
+ * of this mechanism. 2007.08.03 by Emily */
tcb_desc->bRTSEnable = false;
break;
}
- // Totally no protection case!!
+ /* Totally no protection case!! */
goto NO_PROTECTION;
}
}
- // For test , CTS replace with RTS
- if( 0 )
- {
- tcb_desc->bCTSEnable = true;
+ /* For test , CTS replace with RTS */
+ if (0) {
+ tcb_desc->bCTSEnabl = true;
tcb_desc->rts_rate = MGN_24M;
- tcb_desc->bRTSEnable = true;
+ tcb_desc->bRTSEnable = true;
}
if (ieee->current_network.capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
tcb_desc->bUseShortPreamble = true;
@@ -553,53 +543,48 @@ void ieee80211_query_protectionmode(struct
ieee80211_device* ieee, cb_desc* tcb_
NO_PROTECTION:
tcb_desc->bRTSEnable = false;
tcb_desc->bCTSEnable = false;
- tcb_desc->rts_rate = 0;
+ tcb_desc->rts_rate = 0;
tcb_desc->RTSSC = 0;
- tcb_desc->bRTSBW = false;
+ tcb_desc->bRTSBW = false;
}
-void ieee80211_txrate_selectmode(struct ieee80211_device* ieee, cb_desc*
tcb_desc)
+void ieee80211_txrate_selectmode(struct ieee80211_device *ieee, cb_desc
*tcb_desc)
{
#ifdef TO_DO_LIST
- if(!IsDataFrame(pFrame))
- {
+ if (!IsDataFrame(pFrame)) {
pTcb->bTxDisableRateFallBack = TRUE;
pTcb->bTxUseDriverAssingedRate = TRUE;
pTcb->RATRIndex = 7;
return;
}
- if(pMgntInfo->ForcedDataRate!= 0)
- {
+ if (pMgntInfo->ForcedDataRate != 0) {
pTcb->bTxDisableRateFallBack = TRUE;
pTcb->bTxUseDriverAssingedRate = TRUE;
return;
}
#endif
- if(ieee->bTxDisableRateFallBack)
+ if (ieee->bTxDisableRateFallBack)
tcb_desc->bTxDisableRateFallBack = true;
- if(ieee->bTxUseDriverAssingedRate)
+ if (ieee->bTxUseDriverAssingedRate)
tcb_desc->bTxUseDriverAssingedRate = true;
- if(!tcb_desc->bTxDisableRateFallBack ||
!tcb_desc->bTxUseDriverAssingedRate)
- {
+ if (!tcb_desc->bTxDisableRateFallBack ||
!tcb_desc->bTxUseDriverAssingedRate) {
if (ieee->iw_mode == IW_MODE_INFRA || ieee->iw_mode ==
IW_MODE_ADHOC)
tcb_desc->RATRIndex = 0;
}
}
-void ieee80211_query_seqnum(struct ieee80211_device*ieee, struct sk_buff* skb,
u8* dst)
+void ieee80211_query_seqnum(struct ieee80211_device *ieee, struct sk_buff
*skb, u8 *dst)
{
if (is_multicast_ether_addr(dst) || is_broadcast_ether_addr(dst))
return;
- if (IsQoSDataFrame(skb->data)) //we deal qos data only
- {
+ if (IsQoSDataFrame(skb->data)) {
+ /* ^^^ we deal qos data only ^^^*/
PTX_TS_RECORD pTS = NULL;
- if (!GetTs(ieee, (PTS_COMMON_INFO*)(&pTS), dst, skb->priority,
TX_DIR, true))
- {
+ if (!GetTs(ieee, (PTS_COMMON_INFO *)(&pTS), dst, skb->priority,
TX_DIR, true))
return;
- }
pTS->TxCurSeq = (pTS->TxCurSeq+1)%4096;
}
}
@@ -623,7 +608,7 @@ int rtl8192_ieee80211_rtl_xmit(struct sk_buff *skb, struct
net_device *dev)
u8 dest[ETH_ALEN], src[ETH_ALEN];
int qos_actived = ieee->current_network.qos_data.active;
- struct ieee80211_crypt_data* crypt;
+ struct ieee80211_crypt_data *crypt;
cb_desc *tcb_desc;
@@ -631,7 +616,7 @@ int rtl8192_ieee80211_rtl_xmit(struct sk_buff *skb, struct
net_device *dev)
/* If there is no driver handler to take the TXB, dont' bother
* creating it... */
- if ((!ieee->hard_start_xmit && !(ieee->softmac_features &
IEEE_SOFTMAC_TX_QUEUE))||
+ if ((!ieee->hard_start_xmit && !(ieee->softmac_features &
IEEE_SOFTMAC_TX_QUEUE)) ||
((!ieee->softmac_data_hard_start_xmit && (ieee->softmac_features &
IEEE_SOFTMAC_TX_QUEUE)))) {
printk(KERN_WARNING "%s: No xmit handler.\n",
ieee->dev->name);
@@ -639,7 +624,7 @@ int rtl8192_ieee80211_rtl_xmit(struct sk_buff *skb, struct
net_device *dev)
}
- if(likely(ieee->raw_tx == 0)){
+ if (likely(ieee->raw_tx == 0)) {
if (unlikely(skb->len < SNAP_SIZE + sizeof(u16))) {
printk(KERN_WARNING "%s: skb too small (%d).\n",
ieee->dev->name, skb->len);
@@ -674,18 +659,14 @@ int rtl8192_ieee80211_rtl_xmit(struct sk_buff *skb,
struct net_device *dev)
/* Advance the SKB to the start of the payload */
skb_pull(skb, sizeof(struct ethhdr));
-
/* Determine total amount of storage required for TXB packets
*/
bytes = skb->len + SNAP_SIZE + sizeof(u16);
-
if (encrypt)
fc = IEEE80211_FTYPE_DATA | IEEE80211_FCTL_WEP;
else
-
fc = IEEE80211_FTYPE_DATA;
-
- //if(ieee->current_network.QoS_Enable)
- if(qos_actived)
+ /* if(ieee->current_network.QoS_Enable) */
+ if (qos_actived)
fc |= IEEE80211_STYPE_QOS_DATA;
else
fc |= IEEE80211_STYPE_DATA;
@@ -708,44 +689,45 @@ int rtl8192_ieee80211_rtl_xmit(struct sk_buff *skb,
struct net_device *dev)
header.frame_ctl = cpu_to_le16(fc);
/* Determine fragmentation size based on destination (multicast
- * and broadcast are not fragmented) */
+ * and broadcast are not fragmented) */
if (is_multicast_ether_addr(header.addr1) ||
is_broadcast_ether_addr(header.addr1)) {
frag_size = MAX_FRAG_THRESHOLD;
qos_ctl |= QOS_CTL_NOTCONTAIN_ACK;
- }
- else {
- frag_size = ieee->fts;//default:392
+ } else {
+ frag_size = ieee->fts; /*default:392*/
qos_ctl = 0;
}
- //if (ieee->current_network.QoS_Enable)
- if(qos_actived)
- {
+ /* if (ieee->current_network.QoS_Enable) */
+ if (qos_actived) {
hdr_len = IEEE80211_3ADDR_LEN + 2;
skb->priority = ieee80211_classify(skb,
&ieee->current_network);
- qos_ctl |= skb->priority; //set in the
ieee80211_classify
+ qos_ctl |= skb->priority;
+ /* ^^^ set in the ieee80211_classify ^^^*/
header.qos_ctl = cpu_to_le16(qos_ctl &
IEEE80211_QOS_TID);
} else {
hdr_len = IEEE80211_3ADDR_LEN;
}
/* Determine amount of payload per fragment. Regardless of if
* this stack is providing the full 802.11 header, one will
- * eventually be affixed to this fragment -- so we must account
for
+ * eventually be affixed to this
+ * fragment -- so we must account for
* it when determining the amount of payload space. */
bytes_per_frag = frag_size - hdr_len;
if (ieee->config &
(CFG_IEEE80211_COMPUTE_FCS | CFG_IEEE80211_RESERVE_FCS))
bytes_per_frag -= IEEE80211_FCS_LEN;
- /* Each fragment may need to have room for encryptiong
pre/postfix */
+ /* Each fragment may need to
+ * have room for encryptiong pre/postfix */
if (encrypt)
bytes_per_frag -= crypt->ops->extra_prefix_len +
crypt->ops->extra_postfix_len;
/* Number of fragments is the total bytes_per_frag /
- * payload_per_fragment */
+ * payload_per_fragment */
nr_frags = bytes / bytes_per_frag;
bytes_last_frag = bytes % bytes_per_frag;
if (bytes_last_frag)
@@ -753,8 +735,10 @@ int rtl8192_ieee80211_rtl_xmit(struct sk_buff *skb, struct
net_device *dev)
else
bytes_last_frag = bytes_per_frag;
- /* When we allocate the TXB we allocate enough space for the
reserve
- * and full fragment bytes (bytes_per_frag doesn't include
prefix,
+ /* When we allocate the TXB we
+ * allocate enough space for the reserve
+ * and full fragment bytes (
+ * bytes_per_frag doesn't include prefix,
* postfix, header, FCS, etc.) */
txb = ieee80211_alloc_txb(nr_frags, frag_size +
ieee->tx_headroom, GFP_ATOMIC);
if (unlikely(!txb)) {
@@ -765,21 +749,20 @@ int rtl8192_ieee80211_rtl_xmit(struct sk_buff *skb,
struct net_device *dev)
txb->encrypted = encrypt;
txb->payload_size = bytes;
- //if (ieee->current_network.QoS_Enable)
- if(qos_actived)
- {
+ /* if (ieee->current_network.QoS_Enable) */
+ if (qos_actived)
txb->queue_index = UP2AC(skb->priority);
- } else {
+ else
txb->queue_index = WME_AC_BK;;
- }
for (i = 0; i < nr_frags; i++) {
skb_frag = txb->fragments[i];
tcb_desc = (cb_desc *)(skb_frag->cb +
MAX_DEV_ADDR_SIZE);
- if(qos_actived){
- skb_frag->priority =
skb->priority;//UP2AC(skb->priority);
+ if (qos_actived) {
+ skb_frag->priority = skb->priority;
+ /* ^^ UP2AC(skb->priority); ^^ */
tcb_desc->queue_index = UP2AC(skb->priority);
} else {
skb_frag->priority = WME_AC_BK;
@@ -787,21 +770,20 @@ int rtl8192_ieee80211_rtl_xmit(struct sk_buff *skb,
struct net_device *dev)
}
skb_reserve(skb_frag, ieee->tx_headroom);
- if (encrypt){
+ if (encrypt) {
if (ieee->hwsec_active)
tcb_desc->bHwSec = 1;
else
tcb_desc->bHwSec = 0;
skb_reserve(skb_frag,
crypt->ops->extra_prefix_len);
- }
- else
- {
+ } else {
tcb_desc->bHwSec = 0;
}
frag_hdr = (struct ieee80211_hdr_3addrqos
*)skb_put(skb_frag, hdr_len);
memcpy(frag_hdr, &header, hdr_len);
- /* If this is not the last fragment, then add the
MOREFRAGS
+ /* If this is not the last fragment,
+ * then add the MOREFRAGS
* bit to the frame control */
if (i != nr_frags - 1) {
frag_hdr->frame_ctl = cpu_to_le16(
@@ -809,13 +791,14 @@ int rtl8192_ieee80211_rtl_xmit(struct sk_buff *skb,
struct net_device *dev)
bytes = bytes_per_frag;
} else {
- /* The last fragment takes the remaining length
*/
+ /* The last fragment takes
+ *the remaining length */
bytes = bytes_last_frag;
}
- //if(ieee->current_network.QoS_Enable)
- if(qos_actived)
- {
- // add 1 only indicate to corresponding seq
number control 2006/7/12
+ /* if(ieee->current_network.QoS_Enable) */
+ if (qos_actived) {
+ /* add 1 only indicate to corresponding
+ * seq number control 2006/7/12 */
frag_hdr->seq_ctl =
cpu_to_le16(ieee->seq_ctrl[UP2AC(skb->priority)+1]<<4 | i);
} else {
frag_hdr->seq_ctl =
cpu_to_le16(ieee->seq_ctrl[0]<<4 | i);
@@ -843,19 +826,18 @@ int rtl8192_ieee80211_rtl_xmit(struct sk_buff *skb,
struct net_device *dev)
skb_put(skb_frag, 4);
}
- if(qos_actived)
- {
+ if (qos_actived) {
if (ieee->seq_ctrl[UP2AC(skb->priority) + 1] == 0xFFF)
ieee->seq_ctrl[UP2AC(skb->priority) + 1] = 0;
else
ieee->seq_ctrl[UP2AC(skb->priority) + 1]++;
} else {
- if (ieee->seq_ctrl[0] == 0xFFF)
+ if (ieee->seq_ctrl[0] == 0xFFF)
ieee->seq_ctrl[0] = 0;
else
ieee->seq_ctrl[0]++;
}
- }else{
+ } else {
if (unlikely(skb->len < sizeof(struct ieee80211_hdr_3addr))) {
printk(KERN_WARNING "%s: skb too small (%d).\n",
ieee->dev->name, skb->len);
@@ -863,7 +845,7 @@ int rtl8192_ieee80211_rtl_xmit(struct sk_buff *skb, struct
net_device *dev)
}
txb = ieee80211_alloc_txb(1, skb->len, GFP_ATOMIC);
- if(!txb){
+ if (!txb) {
printk(KERN_WARNING "%s: Could not allocate TXB\n",
ieee->dev->name);
goto failed;
@@ -871,13 +853,14 @@ int rtl8192_ieee80211_rtl_xmit(struct sk_buff *skb,
struct net_device *dev)
txb->encrypted = 0;
txb->payload_size = skb->len;
- memcpy(skb_put(txb->fragments[0],skb->len), skb->data,
skb->len);
+ memcpy(skb_put(txb->fragments[0], skb->len), skb->data,
skb->len);
}
success:
-//WB add to fill data tcb_desc here. only first fragment is considered, need
to change, and you may remove to other place.
- if (txb)
- {
+ /*WB add to fill data tcb_desc here.
+ *only first fragment is considered, need to change,
+ * and you may remove to other place. */
+ if (txb) {
#if 1
cb_desc *tcb_desc = (cb_desc *)(txb->fragments[0]->cb +
MAX_DEV_ADDR_SIZE);
tcb_desc->bTxEnableFwCalcDur = 1;
@@ -886,10 +869,10 @@ int rtl8192_ieee80211_rtl_xmit(struct sk_buff *skb,
struct net_device *dev)
if (is_broadcast_ether_addr(header.addr1))
tcb_desc->bBroadcast = 1;
ieee80211_txrate_selectmode(ieee, tcb_desc);
- if ( tcb_desc->bMulticast || tcb_desc->bBroadcast)
+ if (tcb_desc->bMulticast || tcb_desc->bBroadcast)
tcb_desc->data_rate = ieee->basic_rate;
else
- //tcb_desc->data_rate =
CURRENT_RATE(ieee->current_network.mode, ieee->rate, ieee->HTCurrentOperaRate);
+ /* tcb_desc->data_rate =
CURRENT_RATE(ieee->current_network.mode, ieee->rate, ieee->HTCurrentOperaRate);
*/
tcb_desc->data_rate = CURRENT_RATE(ieee->mode,
ieee->rate, ieee->HTCurrentOperaRate);
ieee80211_qurey_ShortPreambleMode(ieee, tcb_desc);
ieee80211_tx_query_agg_cap(ieee, txb->fragments[0], tcb_desc);
@@ -897,16 +880,16 @@ int rtl8192_ieee80211_rtl_xmit(struct sk_buff *skb,
struct net_device *dev)
ieee80211_query_BandwidthMode(ieee, tcb_desc);
ieee80211_query_protectionmode(ieee, tcb_desc,
txb->fragments[0]);
ieee80211_query_seqnum(ieee, txb->fragments[0], header.addr1);
-// IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA,
txb->fragments[0]->data, txb->fragments[0]->len);
- //IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, tcb_desc,
sizeof(cb_desc));
+/* IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA,
txb->fragments[0]->data, txb->fragments[0]->len);
+ IEEE80211_DEBUG_DATA(IEEE80211_DL_DATA, tcb_desc,
sizeof(cb_desc)); */
#endif
}
spin_unlock_irqrestore(&ieee->lock, flags);
dev_kfree_skb_any(skb);
if (txb) {
- if (ieee->softmac_features & IEEE_SOFTMAC_TX_QUEUE){
+ if (ieee->softmac_features & IEEE_SOFTMAC_TX_QUEUE) {
ieee80211_softmac_xmit(txb, ieee);
- }else{
+ } else {
if ((*ieee->hard_start_xmit)(txb, dev) == 0) {
stats->tx_packets++;
stats->tx_bytes += txb->payload_size;
--
1.7.0.4
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