/* Incoming skb is converted to a txb which consists of
* a block of 802.11 fragment packets (stored as skbs) */
int ieee80211_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,
rts_required;
unsigned long flags;
struct net_device_stats *stats = &ieee->stats;
int ether_type, encrypt, host_encrypt, host_encrypt_msdu, host_build_iv;
int bytes, fc, 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];
struct ieee80211_crypt_data *crypt;
int priority = skb->priority;
int snapped = 0;
if (ieee->is_queue_full && (*ieee->is_queue_full) (dev, priority))
return NETDEV_TX_BUSY;
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) {
printk(KERN_WARNING "%s: No xmit handler.\n", ieee->dev->name);
goto success;
}
if (unlikely(skb->len < SNAP_SIZE + sizeof(u16))) {
printk(KERN_WARNING "%s: skb too small (%d).\n",
ieee->dev->name, skb->len);
goto success;
}
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->sec.encrypt;
host_encrypt = ieee->host_encrypt && encrypt && crypt;
host_encrypt_msdu = ieee->host_encrypt_msdu && encrypt && crypt;
host_build_iv = ieee->host_build_iv && encrypt && crypt;
if (!encrypt && ieee->ieee802_1x &&
ieee->drop_unencrypted && ether_type != ETH_P_PAE) {
stats->tx_dropped++;
goto success;
}
/* Save source and destination addresses */
memcpy(dest, skb->data, ETH_ALEN);
memcpy(src, skb->data + ETH_ALEN, ETH_ALEN);
if (host_encrypt || host_build_iv)
fc = IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA |
IEEE80211_FCTL_PROTECTED;
else
fc = IEEE80211_FTYPE_DATA | 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->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->bssid, ETH_ALEN);
}
hdr_len = IEEE80211_3ADDR_LEN;
if (ieee->is_qos_active && ieee->is_qos_active(dev, skb)) {
fc |= IEEE80211_STYPE_QOS_DATA;
hdr_len += 2;
skb->priority = ieee80211_classify(skb);
header.qos_ctl |= skb->priority & IEEE80211_QCTL_TID;
}
header.frame_ctl = cpu_to_le16(fc);
/* 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);
/* Encrypt msdu first on the whole data packet. */
if ((host_encrypt || host_encrypt_msdu) &&
crypt && crypt->ops && crypt->ops->encrypt_msdu) {
int res = 0;
int len = bytes + hdr_len + crypt->ops->extra_msdu_prefix_len +
crypt->ops->extra_msdu_postfix_len;
struct sk_buff *skb_new = dev_alloc_skb(len);
if (unlikely(!skb_new))
goto failed;
skb_reserve(skb_new, crypt->ops->extra_msdu_prefix_len);
memcpy(skb_put(skb_new, hdr_len), &header, hdr_len);
snapped = 1;
ieee80211_copy_snap(skb_put(skb_new, SNAP_SIZE + sizeof(u16)),
ether_type);
memcpy(skb_put(skb_new, skb->len), skb->data, skb->len);
res = crypt->ops->encrypt_msdu(skb_new, hdr_len, crypt->priv);
if (res < 0) {
IEEE80211_ERROR("msdu encryption failed\n");
dev_kfree_skb_any(skb_new);
goto failed;
}
dev_kfree_skb_any(skb);
skb = skb_new;
bytes += crypt->ops->extra_msdu_prefix_len +
crypt->ops->extra_msdu_postfix_len;
skb_pull(skb, hdr_len);
}
if (host_encrypt || ieee->host_open_frag) {
/* Determine fragmentation size based on destination (multicast
* and broadcast are not fragmented) */
if (is_multicast_ether_addr(dest) ||
is_broadcast_ether_addr(dest))
frag_size = MAX_FRAG_THRESHOLD;
else
frag_size = ieee->fts;
/* 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 - IEEE80211_3ADDR_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 (host_encrypt)
bytes_per_frag -= crypt->ops->extra_mpdu_prefix_len +
crypt->ops->extra_mpdu_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;
} else {
nr_frags = 1;
bytes_per_frag = bytes_last_frag = bytes;
frag_size = bytes + IEEE80211_3ADDR_LEN;
}
rts_required = (frag_size > ieee->rts
&& ieee->config & CFG_IEEE80211_RTS);
if (rts_required)
nr_frags++;
/* 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;
if (host_encrypt)
txb->payload_size = frag_size * (nr_frags - 1) +
bytes_last_frag;
else
txb->payload_size = bytes;
if (rts_required) {
skb_frag = txb->fragments[0];
frag_hdr =
(struct ieee80211_hdr_3addrqos *)skb_put(skb_frag, hdr_len);
/*
* Set header frame_ctl to the RTS.
*/
header.frame_ctl =
cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS);
memcpy(frag_hdr, &header, hdr_len);
/*
* Restore header frame_ctl to the original data setting.
*/
header.frame_ctl = cpu_to_le16(fc);
if (ieee->config &
(CFG_IEEE80211_COMPUTE_FCS | CFG_IEEE80211_RESERVE_FCS))
skb_put(skb_frag, 4);
txb->rts_included = 1;
i = 1;
} else
i = 0;
for (; i < nr_frags; i++) {
skb_frag = txb->fragments[i];
if (host_encrypt || host_build_iv)
skb_reserve(skb_frag,
crypt->ops->extra_mpdu_prefix_len);
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 (i == 0 && !snapped) {
ieee80211_copy_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 (host_encrypt)
ieee80211_encrypt_fragment(ieee, skb_frag, hdr_len);
else if (host_build_iv) {
struct ieee80211_crypt_data *crypt;
crypt = ieee->crypt[ieee->tx_keyidx];
atomic_inc(&crypt->refcnt);
if (crypt->ops->build_iv)
crypt->ops->build_iv(skb_frag, hdr_len,
ieee->sec.keys[ieee->sec.active_key],
ieee->sec.key_sizes[ieee->sec.active_key],
crypt->priv);
atomic_dec(&crypt->refcnt);
}
if (ieee->config &
(CFG_IEEE80211_COMPUTE_FCS | CFG_IEEE80211_RESERVE_FCS))
skb_put(skb_frag, 4);
}
success:
spin_unlock_irqrestore(&ieee->lock, flags);
dev_kfree_skb_any(skb);
if (txb) {
int ret = (*ieee->hard_start_xmit) (txb, dev, priority);
if (ret == 0) {
stats->tx_packets++;
stats->tx_bytes += txb->payload_size;
return 0;
}
if (ret == NETDEV_TX_BUSY) {
printk(KERN_ERR "%s: NETDEV_TX_BUSY returned; "
"driver should report queue full via "
"ieee_device->is_queue_full.\n",
ieee->dev->name);
}
ieee80211_txb_free(txb);
}
return 0;
failed:
spin_unlock_irqrestore(&ieee->lock, flags);
netif_stop_queue(dev);
stats->tx_errors++;
return 1;
}
/* Incoming 802.11 strucure is converted to a TXB
* a block of 802.11 fragment packets (stored as skbs) */
int ieee80211_tx_frame(struct ieee80211_device *ieee,
struct ieee80211_hdr *frame, int hdr_len, int total_len,
int encrypt_mpdu)
{
struct ieee80211_txb *txb = NULL;
unsigned long flags;
struct net_device_stats *stats = &ieee->stats;
struct sk_buff *skb_frag;
int priority = -1;
int fraglen = total_len;
int headroom = ieee->tx_headroom;
struct ieee80211_crypt_data *crypt = ieee->crypt[ieee->tx_keyidx];
spin_lock_irqsave(&ieee->lock, flags);
if (encrypt_mpdu && (!ieee->sec.encrypt || !crypt))
encrypt_mpdu = 0;
/* If there is no driver handler to take the TXB, dont' bother
* creating it... */
if (!ieee->hard_start_xmit) {
printk(KERN_WARNING "%s: No xmit handler.\n", ieee->dev->name);
goto success;
}
if (unlikely(total_len < 24)) {
printk(KERN_WARNING "%s: skb too small (%d).\n",
ieee->dev->name, total_len);
goto success;
}
if (encrypt_mpdu) {
frame->frame_ctl |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
fraglen += crypt->ops->extra_mpdu_prefix_len +
crypt->ops->extra_mpdu_postfix_len;
headroom += crypt->ops->extra_mpdu_prefix_len;
}
/* 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(1, fraglen, headroom, GFP_ATOMIC);
if (unlikely(!txb)) {
printk(KERN_WARNING "%s: Could not allocate TXB\n",
ieee->dev->name);
goto failed;
}
txb->encrypted = 0;
txb->payload_size = fraglen;
skb_frag = txb->fragments[0];
memcpy(skb_put(skb_frag, total_len), frame, total_len);
if (ieee->config &
(CFG_IEEE80211_COMPUTE_FCS | CFG_IEEE80211_RESERVE_FCS))
skb_put(skb_frag, 4);
/* To avoid overcomplicating things, we do the corner-case frame
* encryption in software. The only real situation where encryption is
* needed here is during software-based shared key authentication. */
if (encrypt_mpdu)
ieee80211_encrypt_fragment(ieee, skb_frag, hdr_len);
success:
spin_unlock_irqrestore(&ieee->lock, flags);
if (txb) {
if ((*ieee->hard_start_xmit) (txb, ieee->dev, priority) == 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);
stats->tx_errors++;
return 1;
}
EXPORT_SYMBOL(ieee80211_tx_frame);
EXPORT_SYMBOL(ieee80211_txb_free);
int ieee80211_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",
;
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",
;
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(ieee->current_network.QoS_Enable)
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",
;
goto failed;
}
txb->encrypted = encrypt;
txb->payload_size = bytes;
//if (ieee->current_network.QoS_Enable)
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(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);
}
/* 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",
;
goto success;
}
txb = ieee80211_alloc_txb(1, skb->len, GFP_ATOMIC);
if(!txb){
// printk(KERN_WARNING "%s: Could not allocate TXB\n",
;
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)
{
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->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);
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);
// 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));
}
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;
}
EXPORT_SYMBOL(ieee80211_txb_free);
int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev)
{
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
struct ieee80211_device *ieee = netdev_priv(dev);
#else
struct ieee80211_device *ieee = (struct ieee80211_device *)dev->priv;
#endif
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 = {
.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 ((!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
memcpy(&dest, skb->data, ETH_ALEN);
memcpy(&src, skb->data+ETH_ALEN, ETH_ALEN);
skb_pull(skb, sizeof(struct ethhdr));
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;
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) {
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);
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;
qos_ctl = 0;
}
if(qos_actived)
{
hdr_len = IEEE80211_3ADDR_LEN + 2;
skb->priority = ieee80211_classify(skb, &ieee->current_network);
qos_ctl |= skb->priority;
header.qos_ctl = cpu_to_le16(qos_ctl & IEEE80211_QOS_TID);
} else {
hdr_len = IEEE80211_3ADDR_LEN;
}
bytes_per_frag = frag_size - hdr_len;
if (ieee->config &
(CFG_IEEE80211_COMPUTE_FCS | CFG_IEEE80211_RESERVE_FCS))
bytes_per_frag -= IEEE80211_FCS_LEN;
if (encrypt)
bytes_per_frag -= crypt->ops->extra_prefix_len +
crypt->ops->extra_postfix_len;
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;
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;
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 (i != nr_frags - 1) {
frag_hdr->frame_ctl = cpu_to_le16(
fc | IEEE80211_FCTL_MOREFRAGS);
bytes = bytes_per_frag;
} else {
bytes = bytes_last_frag;
}
if(qos_actived)
{
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);
}
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);
skb_pull(skb, bytes);
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:
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;
}
/* SKBs are added to the ieee->tx_queue. */
int ieee80211_xmit(struct sk_buff *skb,
struct net_device *dev)
{
#if LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)
struct ieee80211_device *ieee = netdev_priv(dev);
#else
struct ieee80211_device *ieee = (struct ieee80211_device *)dev->priv;
#endif
struct ieee80211_txb *txb = NULL;
struct ieee80211_hdr *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, encrypt;
int bytes, fc, hdr_len;
struct sk_buff *skb_frag;
struct ieee80211_hdr header = { /* Ensure zero initialized */
.duration_id = 0,
.seq_ctl = 0
};
u8 dest[ETH_ALEN], src[ETH_ALEN];
int pend;
struct ieee80211_crypt_data* crypt;
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;
}
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_STYPE_DATA |
IEEE80211_FCTL_WEP;
else
fc = IEEE80211_FTYPE_DATA | 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);
hdr_len = IEEE80211_3ADDR_LEN;
/* Determine fragmentation size based on destination (multicast
* and broadcast are not fragmented) */
if (is_multicast_ether_addr(dest) ||
is_broadcast_ether_addr(dest))
frag_size = MAX_FRAG_THRESHOLD;
else
frag_size = ieee->fts;
/* 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 - IEEE80211_3ADDR_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.) */
pend = atomic_read(&ieee->tx_pending_txb);
if(pend > (MAX_TX_SKB - 1)) {
goto failed;
} else {
atomic_inc(&ieee->tx_pending_txb);
}
txb = ieee->alloc_txb[ieee->tx_skb_index];
ieee->tx_skb_index = (ieee->tx_skb_index + 1) % MAX_TX_SKB;
if (unlikely(!txb)) {
printk(KERN_WARNING "%s: Could not allocate TXB\n",
ieee->dev->name);
goto failed;
}
for(i = 0; i < txb->nr_frags; i++) {
txb->fragments[i]->len = 0;
txb->fragments[i]->data = txb->fragments[i]->head + 16;
txb->fragments[i]->tail = txb->fragments[i]->data;
}
#if 1
txb->nr_frags = nr_frags;
txb->frag_size = frag_size;
#endif
txb->encrypted = encrypt;
txb->payload_size = bytes;
for (i = 0; i < nr_frags; i++) {
skb_frag = txb->fragments[i];
if (encrypt)
skb_reserve(skb_frag, crypt->ops->extra_prefix_len);
frag_hdr = (struct ieee80211_hdr *)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;
}
frag_hdr->seq_ctl = cpu_to_le16(ieee->seq_ctrl<<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 (ieee->seq_ctrl == 0xFFF)
ieee->seq_ctrl = 0;
else
ieee->seq_ctrl++;
}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:
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, txb->nr_frags);
}
}
return 0;
failed:
spin_unlock_irqrestore(&ieee->lock, flags);
netif_stop_queue(dev);
stats->tx_errors++;
return 1;
}
#ifndef BUILT_IN_IEEE80211
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
EXPORT_SYMBOL(ieee80211_txb_free);
EXPORT_SYMBOL(ieee80211_alloc_txb);
#else
EXPORT_SYMBOL_NOVERS(ieee80211_txb_free);
EXPORT_SYMBOL_NOVERS(ieee80211_alloc_txb);
int 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;
bool bdhcp =false;
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
// The following is for DHCP and ARP packet, we use cck1M to tx these packets and let LPS awake some time
// to prevent DHCP protocol fail
if (skb->len > 282){//MINIMUM_DHCP_PACKET_SIZE) {
if (ETH_P_IP == ether_type) {// IP header
const struct iphdr *ip = (struct iphdr *)((u8 *)skb->data+14);
if (IPPROTO_UDP == ip->protocol) {//FIXME windows is 11 but here UDP in linux kernel is 17.
struct udphdr *udp = (struct udphdr *)((u8 *)ip + (ip->ihl << 2));
//if(((ntohs(udp->source) == 68) && (ntohs(udp->dest) == 67)) ||
/// ((ntohs(udp->source) == 67) && (ntohs(udp->dest) == 68))) {
if(((((u8 *)udp)[1] == 68) && (((u8 *)udp)[3] == 67)) ||
((((u8 *)udp)[1] == 67) && (((u8 *)udp)[3] == 68))) {
// 68 : UDP BOOTP client
// 67 : UDP BOOTP server
printk("DHCP pkt src port:%d, dest port:%d!!\n", ((u8 *)udp)[1],((u8 *)udp)[3]);
// Use low rate to send DHCP packet.
//if(pMgntInfo->IOTAction & HT_IOT_ACT_WA_IOT_Broadcom)
//{
// tcb_desc->DataRate = MgntQuery_TxRateExcludeCCKRates(ieee);//0xc;//ofdm 6m
// tcb_desc->bTxDisableRateFallBack = false;
//}
//else
//pTcb->DataRate = Adapter->MgntInfo.LowestBasicRate;
//RTPRINT(FDM, WA_IOT, ("DHCP TranslateHeader(), pTcb->DataRate = 0x%x\n", pTcb->DataRate));
bdhcp = true;
#ifdef _RTL8192_EXT_PATCH_
ieee->LPSDelayCnt = 100;//pPSC->LPSAwakeIntvl*2; //AMY,090701
#else
ieee->LPSDelayCnt = 100;//pPSC->LPSAwakeIntvl*2;
#endif
}
}
}else if(ETH_P_ARP == ether_type){// IP ARP packet
printk("=================>DHCP Protocol start tx ARP pkt!!\n");
bdhcp = true;
ieee->LPSDelayCnt = ieee->current_network.tim.tim_count;
//if(pMgntInfo->IOTAction & HT_IOT_ACT_WA_IOT_Broadcom)
//{
// tcb_desc->DataRate = MgntQuery_TxRateExcludeCCKRates(Adapter->MgntInfo.mBrates);//0xc;//ofdm 6m
// tcb_desc->bTxDisableRateFallBack = FALSE;
//}
//else
// tcb_desc->DataRate = Adapter->MgntInfo.LowestBasicRate;
//RTPRINT(FDM, WA_IOT, ("ARP TranslateHeader(), pTcb->DataRate = 0x%x\n", pTcb->DataRate));
}
}
/* 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(ieee->current_network.QoS_Enable)
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 (ieee->current_network.QoS_Enable)
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(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);
}
/* 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->current_network.mode, ieee->rate, ieee->HTCurrentOperaRate);
tcb_desc->data_rate = CURRENT_RATE(ieee->mode, ieee->rate, ieee->HTCurrentOperaRate);
if(bdhcp == true){
// Use low rate to send DHCP packet.
//if(ieee->pHTInfo->IOTAction & HT_IOT_ACT_WA_IOT_Broadcom) {
// tcb_desc->data_rate = MGN_1M;//MgntQuery_TxRateExcludeCCKRates(ieee);//0xc;//ofdm 6m
// tcb_desc->bTxDisableRateFallBack = false;
//}
//else
{
tcb_desc->data_rate = MGN_1M;
tcb_desc->bTxDisableRateFallBack = 1;
}
tcb_desc->RATRIndex = 7;
tcb_desc->bTxUseDriverAssingedRate = 1;
tcb_desc->bdhcp = 1;
}
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);
// 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){
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;
}
