diff options
Diffstat (limited to 'drivers/staging/rtl8192su/ieee80211/ieee80211_tx.c')
| -rw-r--r-- | drivers/staging/rtl8192su/ieee80211/ieee80211_tx.c | 916 |
1 files changed, 0 insertions, 916 deletions
diff --git a/drivers/staging/rtl8192su/ieee80211/ieee80211_tx.c b/drivers/staging/rtl8192su/ieee80211/ieee80211_tx.c deleted file mode 100644 index a6a5d68..0000000 --- a/drivers/staging/rtl8192su/ieee80211/ieee80211_tx.c +++ /dev/null @@ -1,916 +0,0 @@ -/****************************************************************************** - - Copyright(c) 2003 - 2004 Intel Corporation. All rights reserved. - - This program is free software; you can redistribute it and/or modify it - under the terms of version 2 of the GNU General Public License as - published by the Free Software Foundation. - - This program is distributed in the hope that it will be useful, but WITHOUT - ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - more details. - - You should have received a copy of the GNU General Public License along with - this program; if not, write to the Free Software Foundation, Inc., 59 - Temple Place - Suite 330, Boston, MA 02111-1307, USA. - - The full GNU General Public License is included in this distribution in the - file called LICENSE. - - Contact Information: - James P. Ketrenos <ipw2100-admin@linux.intel.com> - Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 - -****************************************************************************** - - Few modifications for Realtek's Wi-Fi drivers by - Andrea Merello <andreamrl@tiscali.it> - - A special thanks goes to Realtek for their support ! - -******************************************************************************/ - -#include <linux/compiler.h> -#include <linux/errno.h> -#include <linux/if_arp.h> -#include <linux/in6.h> -#include <linux/in.h> -#include <linux/ip.h> -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/netdevice.h> -#include <linux/pci.h> -#include <linux/proc_fs.h> -#include <linux/skbuff.h> -#include <linux/slab.h> -#include <linux/tcp.h> -#include <linux/types.h> -#include <linux/wireless.h> -#include <linux/etherdevice.h> -#include <asm/uaccess.h> -#include <linux/if_vlan.h> - -#include "ieee80211.h" - - -/* - - -802.11 Data Frame - - -802.11 frame_contorl for data frames - 2 bytes - ,-----------------------------------------------------------------------------------------. -bits | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | a | b | c | d | e | - |----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|------| -val | 0 | 0 | 0 | 1 | x | 0 | 0 | 0 | 1 | 0 | x | x | 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 >-----------' - | - ,--'---,-------------------------------------------------------------. -Bytes | 2 | 2 | 6 | 6 | 6 | 2 | 0..2312 | 4 | - |------|------|---------|---------|---------|------|---------|------| -Desc. | ctrl | dura | DA/RA | TA | SA | Sequ | Frame | fcs | - | | tion | (BSSID) | | | ence | data | | - `--------------------------------------------------| |------' -Total: 28 non-data bytes `----.----' - | - .- 'Frame data' expands to <---------------------------' - | - V - ,---------------------------------------------------. -Bytes | 1 | 1 | 1 | 3 | 2 | 0-2304 | - |------|------|---------|----------|------|---------| -Desc. | SNAP | SNAP | Control |Eth Tunnel| Type | IP | - | DSAP | SSAP | | | | Packet | - | 0xAA | 0xAA |0x03 (UI)|0x00-00-F8| | | - `-----------------------------------------| | -Total: 8 non-data bytes `----.----' - | - .- 'IP Packet' expands, if WEP enabled, to <--' - | - V - ,-----------------------. -Bytes | 4 | 0-2296 | 4 | - |-----|-----------|-----| -Desc. | IV | Encrypted | ICV | - | | IP Packet | | - `-----------------------' -Total: 8 non-data bytes - - -802.3 Ethernet Data Frame - - ,-----------------------------------------. -Bytes | 6 | 6 | 2 | Variable | 4 | - |-------|-------|------|-----------|------| -Desc. | Dest. | Source| Type | IP Packet | fcs | - | MAC | MAC | | | | - `-----------------------------------------' -Total: 18 non-data bytes - -In the event that fragmentation is required, the incoming payload is split into -N parts of size ieee->fts. The first fragment contains the SNAP header and the -remaining packets are just data. - -If encryption is enabled, each fragment payload size is reduced by enough space -to add the prefix and postfix (IV and ICV totalling 8 bytes in the case of WEP) -So if you have 1500 bytes of payload with ieee->fts set to 500 without -encryption it will take 3 frames. With WEP it will take 4 frames as the -payload of each frame is reduced to 492 bytes. - -* SKB visualization -* -* ,- skb->data -* | -* | ETHERNET HEADER ,-<-- PAYLOAD -* | | 14 bytes from skb->data -* | 2 bytes for Type --> ,T. | (sizeof ethhdr) -* | | | | -* |,-Dest.--. ,--Src.---. | | | -* | 6 bytes| | 6 bytes | | | | -* v | | | | | | -* 0 | v 1 | v | v 2 -* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 -* ^ | ^ | ^ | -* | | | | | | -* | | | | `T' <---- 2 bytes for Type -* | | | | -* | | '---SNAP--' <-------- 6 bytes for SNAP -* | | -* `-IV--' <-------------------- 4 bytes for IV (WEP) -* -* SNAP HEADER -* -*/ - -static u8 P802_1H_OUI[P80211_OUI_LEN] = { 0x00, 0x00, 0xf8 }; -static u8 RFC1042_OUI[P80211_OUI_LEN] = { 0x00, 0x00, 0x00 }; - -static inline int ieee80211_put_snap(u8 *data, u16 h_proto) -{ - struct ieee80211_snap_hdr *snap; - u8 *oui; - - snap = (struct ieee80211_snap_hdr *)data; - snap->dsap = 0xaa; - snap->ssap = 0xaa; - snap->ctrl = 0x03; - - if (h_proto == 0x8137 || h_proto == 0x80f3) - oui = P802_1H_OUI; - else - oui = RFC1042_OUI; - snap->oui[0] = oui[0]; - snap->oui[1] = oui[1]; - snap->oui[2] = oui[2]; - - *(u16 *)(data + SNAP_SIZE) = htons(h_proto); - - return SNAP_SIZE + sizeof(u16); -} - -int ieee80211_encrypt_fragment( - struct ieee80211_device *ieee, - struct sk_buff *frag, - int hdr_len) -{ - struct ieee80211_crypt_data* crypt = ieee->crypt[ieee->tx_keyidx]; - int res; - - if (!(crypt && crypt->ops)) - { - printk("=========>%s(), crypt is null\n", __FUNCTION__); - return -1; - } -#ifdef CONFIG_IEEE80211_CRYPT_TKIP - struct rtl_ieee80211_hdr *header; - - if (ieee->tkip_countermeasures && - crypt && crypt->ops && strcmp(crypt->ops->name, "TKIP") == 0) { - header = (struct rtl_ieee80211_hdr *)frag->data; - if (net_ratelimit()) { - printk(KERN_DEBUG "%s: TKIP countermeasures: dropped " - "TX packet to %pM\n", - ieee->dev->name, header->addr1); - } - return -1; - } -#endif - /* To encrypt, frame format is: - * IV (4 bytes), clear payload (including SNAP), ICV (4 bytes) */ - - /* 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; - if (crypt->ops->encrypt_msdu) - res = crypt->ops->encrypt_msdu(frag, hdr_len, crypt->priv); - if (res == 0 && crypt->ops->encrypt_mpdu) - res = crypt->ops->encrypt_mpdu(frag, hdr_len, crypt->priv); - - atomic_dec(&crypt->refcnt); - if (res < 0) { - printk(KERN_INFO "%s: Encryption failed: len=%d.\n", - ieee->dev->name, frag->len); - ieee->ieee_stats.tx_discards++; - return -1; - } - - return 0; -} - - -void ieee80211_txb_free(struct ieee80211_txb *txb) { - if (unlikely(!txb)) - return; - kfree(txb); -} - -struct ieee80211_txb *ieee80211_alloc_txb(int nr_frags, int txb_size, - int gfp_mask) -{ - struct ieee80211_txb *txb; - int i; - txb = kmalloc( - sizeof(struct ieee80211_txb) + (sizeof(u8*) * nr_frags), - gfp_mask); - if (!txb) - return NULL; - - memset(txb, 0, sizeof(struct ieee80211_txb)); - txb->nr_frags = nr_frags; - txb->frag_size = txb_size; - - for (i = 0; i < nr_frags; i++) { - txb->fragments[i] = dev_alloc_skb(txb_size); - if (unlikely(!txb->fragments[i])) { - i--; - break; - } - memset(txb->fragments[i]->cb, 0, sizeof(txb->fragments[i]->cb)); - } - if (unlikely(i != nr_frags)) { - while (i >= 0) - dev_kfree_skb_any(txb->fragments[i--]); - kfree(txb); - return NULL; - } - return txb; -} - -// 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) -{ - struct ethhdr *eth; - struct iphdr *ip; - eth = (struct ethhdr *)skb->data; - if (eth->h_proto != htons(ETH_P_IP)) - return 0; - - 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; - } -} - -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; - - 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 -#ifdef TO_DO_LIST - if(pTcb->PacketLength >= 4096) - return; - // 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) - return; - -#if 1 - 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"); - return; - } - 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 - TsStartAddBaProcess(ieee, pTxTs); - goto FORCED_AGG_SETTING; - } - 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) - { - 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; - - case HT_AGG_FORCE_ENABLE: - tcb_desc->bAMPDUEnable = true; - tcb_desc->ampdu_density = pHTInfo->ForcedMPDUDensity; - tcb_desc->ampdu_factor = pHTInfo->ForcedAMPDUFactor; - break; - - case HT_AGG_FORCE_DISABLE: - tcb_desc->bAMPDUEnable = false; - tcb_desc->ampdu_density = 0; - tcb_desc->ampdu_factor = 0; - break; - - } - return; -} - -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; - } - else if (ieee->current_network.capability & WLAN_CAPABILITY_SHORT_PREAMBLE) - { - tcb_desc->bUseShortPreamble = true; - } - return; -} -extern void -ieee80211_query_HTCapShortGI(struct ieee80211_device *ieee, cb_desc *tcb_desc) -{ - PRT_HIGH_THROUGHPUT pHTInfo = ieee->pHTInfo; - - tcb_desc->bUseShortGI = false; - - if(!pHTInfo->bCurrentHTSupport||!pHTInfo->bEnableHT) - return; - - if(pHTInfo->bForcedShortGI) - { - tcb_desc->bUseShortGI = true; - return; - } - - if((pHTInfo->bCurBW40MHz==true) && pHTInfo->bCurShortGI40MHz) - tcb_desc->bUseShortGI = true; - else if((pHTInfo->bCurBW40MHz==false) && pHTInfo->bCurShortGI20MHz) - tcb_desc->bUseShortGI = true; -} - -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) - return; - - if(tcb_desc->bMulticast || tcb_desc->bBroadcast) - return; - - 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) - tcb_desc->bPacketBW = true; - return; -} - -void ieee80211_query_protectionmode(struct ieee80211_device* ieee, cb_desc* tcb_desc, struct sk_buff* skb) -{ - // 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 - return; - - if (is_broadcast_ether_addr(skb->data+16)) //check addr3 as infrastructure add3 is DA. - 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) - { - tcb_desc->bRTSEnable = true; - tcb_desc->rts_rate = MGN_24M; - } - 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; - return; - } - 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; - tcb_desc->bRTSEnable = false; - break; - } - 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; - break; - } - //check ERP protection - if (ieee->current_network.buseprotection) - {// CTS-to-SELF - tcb_desc->bRTSEnable = true; - tcb_desc->bCTSEnable = true; - tcb_desc->rts_rate = MGN_24M; - break; - } - //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. - tcb_desc->bRTSEnable = true; - break; - } - } - //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 - tcb_desc->bRTSEnable = false; - break; - } - // Totally no protection case!! - goto NO_PROTECTION; - } - } - // For test , CTS replace with RTS - if( 0 ) - { - tcb_desc->bCTSEnable = true; - tcb_desc->rts_rate = MGN_24M; - tcb_desc->bRTSEnable = true; - } - if (ieee->current_network.capability & WLAN_CAPABILITY_SHORT_PREAMBLE) - tcb_desc->bUseShortPreamble = true; - if (ieee->mode == IW_MODE_MASTER) - goto NO_PROTECTION; - return; -NO_PROTECTION: - tcb_desc->bRTSEnable = false; - tcb_desc->bCTSEnable = false; - tcb_desc->rts_rate = 0; - tcb_desc->RTSSC = 0; - tcb_desc->bRTSBW = false; -} - - -void ieee80211_txrate_selectmode(struct ieee80211_device* ieee, cb_desc* tcb_desc) -{ -#ifdef TO_DO_LIST - if(!IsDataFrame(pFrame)) - { - pTcb->bTxDisableRateFallBack = TRUE; - pTcb->bTxUseDriverAssingedRate = TRUE; - pTcb->RATRIndex = 7; - return; - } - - if(pMgntInfo->ForcedDataRate!= 0) - { - pTcb->bTxDisableRateFallBack = TRUE; - pTcb->bTxUseDriverAssingedRate = TRUE; - return; - } -#endif - if(ieee->bTxDisableRateFallBack) - tcb_desc->bTxDisableRateFallBack = true; - - if(ieee->bTxUseDriverAssingedRate) - tcb_desc->bTxUseDriverAssingedRate = true; - 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) -{ - if (is_multicast_ether_addr(dst) || is_broadcast_ether_addr(dst)) - return; - 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)) - { - return; - } - pTS->TxCurSeq = (pTS->TxCurSeq+1)%4096; - } -} - -int rtl8192_ieee80211_rtl_xmit(struct sk_buff *skb, struct net_device *dev) -{ - struct ieee80211_device *ieee = netdev_priv(dev); - struct ieee80211_txb *txb = NULL; - struct ieee80211_hdr_3addrqos *frag_hdr; - int i, bytes_per_frag, nr_frags, bytes_last_frag, frag_size; - unsigned long flags; - struct net_device_stats *stats = &ieee->stats; - int ether_type = 0, encrypt; - int bytes, fc, qos_ctl = 0, hdr_len; - struct sk_buff *skb_frag; - struct ieee80211_hdr_3addrqos header = { /* Ensure zero initialized */ - .duration_id = 0, - .seq_ctl = 0, - .qos_ctl = 0 - }; - u8 dest[ETH_ALEN], src[ETH_ALEN]; - int qos_actived = ieee->current_network.qos_data.active; - - struct ieee80211_crypt_data* crypt; - - cb_desc *tcb_desc; - - spin_lock_irqsave(&ieee->lock, flags); - - /* 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))|| - ((!ieee->softmac_data_hard_start_xmit && (ieee->softmac_features & IEEE_SOFTMAC_TX_QUEUE)))) { - printk(KERN_WARNING "%s: No xmit handler.\n", - ieee->dev->name); - goto success; - } - - - 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); - goto success; - } - - memset(skb->cb, 0, sizeof(skb->cb)); - ether_type = ntohs(((struct ethhdr *)skb->data)->h_proto); - - crypt = ieee->crypt[ieee->tx_keyidx]; - - encrypt = !(ether_type == ETH_P_PAE && ieee->ieee802_1x) && - ieee->host_encrypt && crypt && crypt->ops; - - if (!encrypt && ieee->ieee802_1x && - ieee->drop_unencrypted && ether_type != ETH_P_PAE) { - stats->tx_dropped++; - goto success; - } - #ifdef CONFIG_IEEE80211_DEBUG - if (crypt && !encrypt && ether_type == ETH_P_PAE) { - struct eapol *eap = (struct eapol *)(skb->data + - sizeof(struct ethhdr) - SNAP_SIZE - sizeof(u16)); - IEEE80211_DEBUG_EAP("TX: IEEE 802.11 EAPOL frame: %s\n", - eap_get_type(eap->type)); - } - #endif - - /* Save source and destination addresses */ - memcpy(&dest, skb->data, ETH_ALEN); - memcpy(&src, skb->data+ETH_ALEN, ETH_ALEN); - - /* 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(qos_actived) - fc |= IEEE80211_STYPE_QOS_DATA; - else - fc |= IEEE80211_STYPE_DATA; - - if (ieee->iw_mode == IW_MODE_INFRA) { - fc |= IEEE80211_FCTL_TODS; - /* To DS: Addr1 = BSSID, Addr2 = SA, - Addr3 = DA */ - memcpy(&header.addr1, ieee->current_network.bssid, ETH_ALEN); - memcpy(&header.addr2, &src, ETH_ALEN); - memcpy(&header.addr3, &dest, ETH_ALEN); - } else if (ieee->iw_mode == IW_MODE_ADHOC) { - /* not From/To DS: Addr1 = DA, Addr2 = SA, - Addr3 = BSSID */ - memcpy(&header.addr1, dest, ETH_ALEN); - memcpy(&header.addr2, src, ETH_ALEN); - memcpy(&header.addr3, ieee->current_network.bssid, ETH_ALEN); - } - - header.frame_ctl = cpu_to_le16(fc); - - /* Determine fragmentation size based on destination (multicast - * 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 - qos_ctl = 0; - } - - //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 - 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 - * 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 */ - 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 */ - nr_frags = bytes / bytes_per_frag; - bytes_last_frag = bytes % bytes_per_frag; - if (bytes_last_frag) - nr_frags++; - 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, - * postfix, header, FCS, etc.) */ - txb = ieee80211_alloc_txb(nr_frags, frag_size + ieee->tx_headroom, GFP_ATOMIC); - if (unlikely(!txb)) { - printk(KERN_WARNING "%s: Could not allocate TXB\n", - ieee->dev->name); - goto failed; - } - txb->encrypted = encrypt; - txb->payload_size = bytes; - - if(qos_actived) - { - txb->queue_index = UP2AC(skb->priority); - } 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); - tcb_desc->queue_index = UP2AC(skb->priority); - } else { - skb_frag->priority = WME_AC_BK; - tcb_desc->queue_index = WME_AC_BK; - } - skb_reserve(skb_frag, ieee->tx_headroom); - - 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 - { - 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 - * bit to the frame control */ - if (i != nr_frags - 1) { - frag_hdr->frame_ctl = cpu_to_le16( - fc | IEEE80211_FCTL_MOREFRAGS); - bytes = bytes_per_frag; - - } else { - /* The last fragment takes the remaining length */ - bytes = bytes_last_frag; - } - 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); - } - - /* Put a SNAP header on the first fragment */ - if (i == 0) { - ieee80211_put_snap( - skb_put(skb_frag, SNAP_SIZE + sizeof(u16)), - ether_type); - bytes -= SNAP_SIZE + sizeof(u16); - } - - memcpy(skb_put(skb_frag, bytes), skb->data, bytes); - - /* Advance the SKB... */ - skb_pull(skb, bytes); - - /* Encryption routine will move the header forward in order - * to insert the IV between the header and the payload */ - if (encrypt) - ieee80211_encrypt_fragment(ieee, skb_frag, hdr_len); - if (ieee->config & - (CFG_IEEE80211_COMPUTE_FCS | CFG_IEEE80211_RESERVE_FCS)) - skb_put(skb_frag, 4); - } - - 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) - ieee->seq_ctrl[0] = 0; - else - ieee->seq_ctrl[0]++; - } - }else{ - if (unlikely(skb->len < sizeof(struct ieee80211_hdr_3addr))) { - printk(KERN_WARNING "%s: skb too small (%d).\n", - ieee->dev->name, skb->len); - goto success; - } - - txb = ieee80211_alloc_txb(1, skb->len, GFP_ATOMIC); - if(!txb){ - printk(KERN_WARNING "%s: Could not allocate TXB\n", - ieee->dev->name); - goto failed; - } - - txb->encrypted = 0; - txb->payload_size = 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) - { -#if 1 - cb_desc *tcb_desc = (cb_desc *)(txb->fragments[0]->cb + MAX_DEV_ADDR_SIZE); - tcb_desc->bTxEnableFwCalcDur = 1; - if (is_multicast_ether_addr(header.addr1)) - tcb_desc->bMulticast = 1; - if (is_broadcast_ether_addr(header.addr1)) - tcb_desc->bBroadcast = 1; - ieee80211_txrate_selectmode(ieee, tcb_desc); - if ( tcb_desc->bMulticast || tcb_desc->bBroadcast) - tcb_desc->data_rate = ieee->basic_rate; - else - 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); - ieee80211_query_HTCapShortGI(ieee, tcb_desc); - ieee80211_query_BandwidthMode(ieee, tcb_desc); - ieee80211_query_protectionmode(ieee, tcb_desc, txb->fragments[0]); - ieee80211_query_seqnum(ieee, txb->fragments[0], header.addr1); -#endif - } - spin_unlock_irqrestore(&ieee->lock, flags); - dev_kfree_skb_any(skb); - if (txb) { - if (ieee->softmac_features & IEEE_SOFTMAC_TX_QUEUE){ - ieee80211_softmac_xmit(txb, ieee); - }else{ - if ((*ieee->hard_start_xmit)(txb, dev) == 0) { - stats->tx_packets++; - stats->tx_bytes += txb->payload_size; - return 0; - } - ieee80211_txb_free(txb); - } - } - - return 0; - - failed: - spin_unlock_irqrestore(&ieee->lock, flags); - netif_stop_queue(dev); - stats->tx_errors++; - return 1; - -} |
