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Diffstat (limited to 'drivers/staging/rtl8192e/rtllib_tx.c')
-rw-r--r--drivers/staging/rtl8192e/rtllib_tx.c357
1 files changed, 188 insertions, 169 deletions
diff --git a/drivers/staging/rtl8192e/rtllib_tx.c b/drivers/staging/rtl8192e/rtllib_tx.c
index 4f68ffe41475..3b159638bba2 100644
--- a/drivers/staging/rtl8192e/rtllib_tx.c
+++ b/drivers/staging/rtl8192e/rtllib_tx.c
@@ -53,102 +53,99 @@
#include "rtllib.h"
-/*
-
-
-802.11 Data Frame
-
-
-802.11 frame_control 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
-*
-*/
+/* 802.11 Data Frame
+ *
+ *
+ * 802.11 frame_control 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 };
@@ -185,14 +182,17 @@ int rtllib_encrypt_fragment(struct rtllib_device *ieee, struct sk_buff *frag,
crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
if (!(crypt && crypt->ops)) {
- printk(KERN_INFO "=========>%s(), crypt is null\n", __func__);
+ netdev_info(ieee->dev, "=========>%s(), crypt is null\n",
+ __func__);
return -1;
}
/* To encrypt, frame format is:
- * IV (4 bytes), clear payload (including SNAP), ICV (4 bytes) */
+ * 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. */
+ * call both MSDU and MPDU encryption functions from here.
+ */
atomic_inc(&crypt->refcnt);
res = 0;
if (crypt->ops->encrypt_msdu)
@@ -202,8 +202,8 @@ int rtllib_encrypt_fragment(struct rtllib_device *ieee, struct sk_buff *frag,
atomic_dec(&crypt->refcnt);
if (res < 0) {
- printk(KERN_INFO "%s: Encryption failed: len=%d.\n",
- ieee->dev->name, frag->len);
+ netdev_info(ieee->dev, "%s: Encryption failed: len=%d.\n",
+ ieee->dev->name, frag->len);
ieee->ieee_stats.tx_discards++;
return -1;
}
@@ -311,7 +311,7 @@ static void rtllib_tx_query_agg_cap(struct rtllib_device *ieee,
if (pHTInfo->bCurrentAMPDUEnable) {
if (!GetTs(ieee, (struct ts_common_info **)(&pTxTs), hdr->addr1,
skb->priority, TX_DIR, true)) {
- printk(KERN_INFO "%s: can't get TS\n", __func__);
+ netdev_info(ieee->dev, "%s: can't get TS\n", __func__);
return;
}
if (pTxTs->TxAdmittedBARecord.bValid == false) {
@@ -412,6 +412,8 @@ static void rtllib_query_protectionmode(struct rtllib_device *ieee,
struct cb_desc *tcb_desc,
struct sk_buff *skb)
{
+ struct rt_hi_throughput *pHTInfo;
+
tcb_desc->bRTSSTBC = false;
tcb_desc->bRTSUseShortGI = false;
tcb_desc->bCTSEnable = false;
@@ -434,50 +436,50 @@ static void rtllib_query_protectionmode(struct rtllib_device *ieee,
tcb_desc->rts_rate = MGN_24M;
}
return;
- } else {
- struct rt_hi_throughput *pHTInfo = ieee->pHTInfo;
+ }
- while (true) {
- if (pHTInfo->IOTAction & HT_IOT_ACT_FORCED_CTS2SELF) {
- tcb_desc->bCTSEnable = true;
- tcb_desc->rts_rate = MGN_24M;
- tcb_desc->bRTSEnable = true;
- 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;
- }
- if (ieee->current_network.buseprotection) {
- tcb_desc->bRTSEnable = true;
- tcb_desc->bCTSEnable = true;
- tcb_desc->rts_rate = MGN_24M;
- break;
- }
- 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;
- tcb_desc->bRTSEnable = true;
- break;
- }
- }
- if (skb->len > ieee->rts) {
+ pHTInfo = ieee->pHTInfo;
+
+ while (true) {
+ if (pHTInfo->IOTAction & HT_IOT_ACT_FORCED_CTS2SELF) {
+ tcb_desc->bCTSEnable = true;
+ tcb_desc->rts_rate = MGN_24M;
+ tcb_desc->bRTSEnable = true;
+ 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;
+ }
+ if (ieee->current_network.buseprotection) {
+ tcb_desc->bRTSEnable = true;
+ tcb_desc->bCTSEnable = true;
+ tcb_desc->rts_rate = MGN_24M;
+ break;
+ }
+ 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;
tcb_desc->bRTSEnable = true;
break;
}
- if (tcb_desc->bAMPDUEnable) {
- tcb_desc->rts_rate = MGN_24M;
- tcb_desc->bRTSEnable = false;
- break;
- }
- goto NO_PROTECTION;
}
+ if (skb->len > ieee->rts) {
+ tcb_desc->rts_rate = MGN_24M;
+ tcb_desc->bRTSEnable = true;
+ break;
+ }
+ if (tcb_desc->bAMPDUEnable) {
+ tcb_desc->rts_rate = MGN_24M;
+ tcb_desc->bRTSEnable = false;
+ break;
+ }
+ goto NO_PROTECTION;
}
if (ieee->current_network.capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
tcb_desc->bUseShortPreamble = true;
@@ -549,6 +551,17 @@ static int wme_downgrade_ac(struct sk_buff *skb)
}
}
+static u8 rtllib_current_rate(struct rtllib_device *ieee)
+{
+ if (ieee->mode & IEEE_MODE_MASK)
+ return ieee->rate;
+
+ if (ieee->HTCurrentOperaRate)
+ return ieee->HTCurrentOperaRate;
+ else
+ return ieee->rate & 0x7F;
+}
+
int rtllib_xmit_inter(struct sk_buff *skb, struct net_device *dev)
{
struct rtllib_device *ieee = (struct rtllib_device *)
@@ -577,21 +590,21 @@ int rtllib_xmit_inter(struct sk_buff *skb, struct net_device *dev)
spin_lock_irqsave(&ieee->lock, flags);
/* If there is no driver handler to take the TXB, don't bother
- * creating it... */
+ * 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);
+ netdev_warn(ieee->dev, "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",
- ieee->dev->name, skb->len);
+ netdev_warn(ieee->dev, "skb too small (%d).\n",
+ skb->len);
goto success;
}
/* Save source and destination addresses */
@@ -604,9 +617,8 @@ int rtllib_xmit_inter(struct sk_buff *skb, struct net_device *dev)
if (ieee->iw_mode == IW_MODE_MONITOR) {
txb = rtllib_alloc_txb(1, skb->len, GFP_ATOMIC);
if (unlikely(!txb)) {
- printk(KERN_WARNING "%s: Could not allocate "
- "TXB\n",
- ieee->dev->name);
+ netdev_warn(ieee->dev,
+ "Could not allocate TXB\n");
goto failed;
}
@@ -636,8 +648,8 @@ int rtllib_xmit_inter(struct sk_buff *skb, struct net_device *dev)
}
}
} else if (ETH_P_ARP == ether_type) {
- printk(KERN_INFO "=================>DHCP "
- "Protocol start tx ARP pkt!!\n");
+ netdev_info(ieee->dev,
+ "=================>DHCP Protocol start tx ARP pkt!!\n");
bdhcp = true;
ieee->LPSDelayCnt =
ieee->current_network.tim.tim_count;
@@ -680,7 +692,8 @@ int rtllib_xmit_inter(struct sk_buff *skb, struct net_device *dev)
if (ieee->iw_mode == IW_MODE_INFRA) {
fc |= RTLLIB_FCTL_TODS;
/* To DS: Addr1 = BSSID, Addr2 = SA,
- Addr3 = DA */
+ * Addr3 = DA
+ */
memcpy(&header.addr1, ieee->current_network.bssid,
ETH_ALEN);
memcpy(&header.addr2, &src, ETH_ALEN);
@@ -691,7 +704,8 @@ int rtllib_xmit_inter(struct sk_buff *skb, struct net_device *dev)
memcpy(&header.addr3, &dest, ETH_ALEN);
} else if (ieee->iw_mode == IW_MODE_ADHOC) {
/* not From/To DS: Addr1 = DA, Addr2 = SA,
- Addr3 = BSSID */
+ * Addr3 = BSSID
+ */
memcpy(&header.addr1, dest, ETH_ALEN);
memcpy(&header.addr2, src, ETH_ALEN);
memcpy(&header.addr3, ieee->current_network.bssid,
@@ -703,7 +717,8 @@ int rtllib_xmit_inter(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 (bIsMulticast) {
frag_size = MAX_FRAG_THRESHOLD;
qos_ctl |= QOS_CTL_NOTCONTAIN_ACK;
@@ -717,10 +732,11 @@ int rtllib_xmit_inter(struct sk_buff *skb, struct net_device *dev)
/* in case we are a client verify acm is not set for this ac */
while (unlikely(ieee->wmm_acm & (0x01 << skb->priority))) {
- printk(KERN_INFO "skb->priority = %x\n", skb->priority);
+ netdev_info(ieee->dev, "skb->priority = %x\n",
+ skb->priority);
if (wme_downgrade_ac(skb))
break;
- printk(KERN_INFO "converted skb->priority = %x\n",
+ netdev_info(ieee->dev, "converted skb->priority = %x\n",
skb->priority);
}
qos_ctl |= skb->priority;
@@ -731,14 +747,16 @@ int rtllib_xmit_inter(struct sk_buff *skb, struct net_device *dev)
/* 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. */
+ * for it when determining the amount of payload space.
+ */
bytes_per_frag = frag_size - hdr_len;
if (ieee->config &
(CFG_RTLLIB_COMPUTE_FCS | CFG_RTLLIB_RESERVE_FCS))
bytes_per_frag -= RTLLIB_FCS_LEN;
/* Each fragment may need to have room for encrypting
- * pre/postfix */
+ * pre/postfix
+ */
if (encrypt) {
bytes_per_frag -= crypt->ops->extra_mpdu_prefix_len +
crypt->ops->extra_mpdu_postfix_len +
@@ -746,7 +764,8 @@ int rtllib_xmit_inter(struct sk_buff *skb, struct net_device *dev)
crypt->ops->extra_msdu_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)
@@ -756,12 +775,12 @@ int rtllib_xmit_inter(struct sk_buff *skb, struct net_device *dev)
/* 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.) */
+ * include prefix, postfix, header, FCS, etc.)
+ */
txb = rtllib_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);
+ netdev_warn(ieee->dev, "Could not allocate TXB\n");
goto failed;
}
txb->encrypted = encrypt;
@@ -801,7 +820,8 @@ int rtllib_xmit_inter(struct sk_buff *skb, struct net_device *dev)
memcpy(frag_hdr, &header, hdr_len);
/* If this is not the last fragment, then add the
- * MOREFRAGS bit to the frame control */
+ * MOREFRAGS bit to the frame control
+ */
if (i != nr_frags - 1) {
frag_hdr->frame_ctl = cpu_to_le16(
fc | RTLLIB_FCTL_MOREFRAGS);
@@ -836,7 +856,8 @@ int rtllib_xmit_inter(struct sk_buff *skb, struct net_device *dev)
/* Encryption routine will move the header forward in
* order to insert the IV between the header and the
- * payload */
+ * payload
+ */
if (encrypt)
rtllib_encrypt_fragment(ieee, skb_frag,
hdr_len);
@@ -858,15 +879,14 @@ int rtllib_xmit_inter(struct sk_buff *skb, struct net_device *dev)
}
} else {
if (unlikely(skb->len < sizeof(struct rtllib_hdr_3addr))) {
- printk(KERN_WARNING "%s: skb too small (%d).\n",
- ieee->dev->name, skb->len);
+ netdev_warn(ieee->dev, "skb too small (%d).\n",
+ skb->len);
goto success;
}
txb = rtllib_alloc_txb(1, skb->len, GFP_ATOMIC);
if (!txb) {
- printk(KERN_WARNING "%s: Could not allocate TXB\n",
- ieee->dev->name);
+ netdev_warn(ieee->dev, "Could not allocate TXB\n");
goto failed;
}
@@ -906,8 +926,7 @@ int rtllib_xmit_inter(struct sk_buff *skb, struct net_device *dev)
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);
+ tcb_desc->data_rate = rtllib_current_rate(ieee);
if (bdhcp) {
if (ieee->pHTInfo->IOTAction &
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.