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Diffstat (limited to 'drivers/net/wireless/b43/xmit.c')
-rw-r--r--drivers/net/wireless/b43/xmit.c239
1 files changed, 156 insertions, 83 deletions
diff --git a/drivers/net/wireless/b43/xmit.c b/drivers/net/wireless/b43/xmit.c
index 0bd6f8a348a..7caa26eb410 100644
--- a/drivers/net/wireless/b43/xmit.c
+++ b/drivers/net/wireless/b43/xmit.c
@@ -5,7 +5,7 @@
Transmission (TX/RX) related functions.
Copyright (C) 2005 Martin Langer <martin-langer@gmx.de>
- Copyright (C) 2005 Stefano Brivio <st3@riseup.net>
+ Copyright (C) 2005 Stefano Brivio <stefano.brivio@polimi.it>
Copyright (C) 2005, 2006 Michael Buesch <mb@bu3sch.de>
Copyright (C) 2005 Danny van Dyk <kugelfang@gentoo.org>
Copyright (C) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>
@@ -30,7 +30,7 @@
#include "xmit.h"
#include "phy.h"
#include "dma.h"
-#include "pio.h"
+
/* Extract the bitrate out of a CCK PLCP header. */
static u8 b43_plcp_get_bitrate_cck(struct b43_plcp_hdr6 *plcp)
@@ -177,13 +177,15 @@ static u8 b43_calc_fallback_rate(u8 bitrate)
return 0;
}
-static void generate_txhdr_fw4(struct b43_wldev *dev,
- struct b43_txhdr_fw4 *txhdr,
- const unsigned char *fragment_data,
- unsigned int fragment_len,
- const struct ieee80211_tx_control *txctl,
- u16 cookie)
+/* Generate a TX data header. */
+int b43_generate_txhdr(struct b43_wldev *dev,
+ u8 *_txhdr,
+ const unsigned char *fragment_data,
+ unsigned int fragment_len,
+ const struct ieee80211_tx_control *txctl,
+ u16 cookie)
{
+ struct b43_txhdr *txhdr = (struct b43_txhdr *)_txhdr;
const struct b43_phy *phy = &dev->phy;
const struct ieee80211_hdr *wlhdr =
(const struct ieee80211_hdr *)fragment_data;
@@ -221,7 +223,7 @@ static void generate_txhdr_fw4(struct b43_wldev *dev,
} else {
int fbrate_base100kbps = B43_RATE_TO_BASE100KBPS(rate_fb);
txhdr->dur_fb = ieee80211_generic_frame_duration(dev->wl->hw,
- dev->wl->if_id,
+ txctl->vif,
fragment_len,
fbrate_base100kbps);
}
@@ -235,29 +237,44 @@ static void generate_txhdr_fw4(struct b43_wldev *dev,
B43_WARN_ON(key_idx >= dev->max_nr_keys);
key = &(dev->key[key_idx]);
- B43_WARN_ON(!key->keyconf);
+
+ if (unlikely(!key->keyconf)) {
+ /* This key is invalid. This might only happen
+ * in a short timeframe after machine resume before
+ * we were able to reconfigure keys.
+ * Drop this packet completely. Do not transmit it
+ * unencrypted to avoid leaking information. */
+ return -ENOKEY;
+ }
/* Hardware appends ICV. */
plcp_fragment_len += txctl->icv_len;
key_idx = b43_kidx_to_fw(dev, key_idx);
- mac_ctl |= (key_idx << B43_TX4_MAC_KEYIDX_SHIFT) &
- B43_TX4_MAC_KEYIDX;
- mac_ctl |= (key->algorithm << B43_TX4_MAC_KEYALG_SHIFT) &
- B43_TX4_MAC_KEYALG;
+ mac_ctl |= (key_idx << B43_TXH_MAC_KEYIDX_SHIFT) &
+ B43_TXH_MAC_KEYIDX;
+ mac_ctl |= (key->algorithm << B43_TXH_MAC_KEYALG_SHIFT) &
+ B43_TXH_MAC_KEYALG;
wlhdr_len = ieee80211_get_hdrlen(fctl);
iv_len = min((size_t) txctl->iv_len,
ARRAY_SIZE(txhdr->iv));
memcpy(txhdr->iv, ((u8 *) wlhdr) + wlhdr_len, iv_len);
}
- b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->plcp),
- plcp_fragment_len, rate);
+ if (b43_is_old_txhdr_format(dev)) {
+ b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->old_format.plcp),
+ plcp_fragment_len, rate);
+ } else {
+ b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->new_format.plcp),
+ plcp_fragment_len, rate);
+ }
b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->plcp_fb),
plcp_fragment_len, rate_fb);
/* Extra Frame Types */
if (rate_fb_ofdm)
- extra_ft |= B43_TX4_EFT_FBOFDM;
+ extra_ft |= B43_TXH_EFT_FB_OFDM;
+ else
+ extra_ft |= B43_TXH_EFT_FB_CCK;
/* Set channel radio code. Note that the micrcode ORs 0x100 to
* this value before comparing it to the value in SHM, if this
@@ -267,18 +284,27 @@ static void generate_txhdr_fw4(struct b43_wldev *dev,
/* PHY TX Control word */
if (rate_ofdm)
- phy_ctl |= B43_TX4_PHY_OFDM;
+ phy_ctl |= B43_TXH_PHY_ENC_OFDM;
+ else
+ phy_ctl |= B43_TXH_PHY_ENC_CCK;
if (dev->short_preamble)
- phy_ctl |= B43_TX4_PHY_SHORTPRMBL;
- switch (txctl->antenna_sel_tx) {
- case 0:
- phy_ctl |= B43_TX4_PHY_ANTLAST;
+ phy_ctl |= B43_TXH_PHY_SHORTPRMBL;
+
+ switch (b43_ieee80211_antenna_sanitize(dev, txctl->antenna_sel_tx)) {
+ case 0: /* Default */
+ phy_ctl |= B43_TXH_PHY_ANT01AUTO;
+ break;
+ case 1: /* Antenna 0 */
+ phy_ctl |= B43_TXH_PHY_ANT0;
break;
- case 1:
- phy_ctl |= B43_TX4_PHY_ANT0;
+ case 2: /* Antenna 1 */
+ phy_ctl |= B43_TXH_PHY_ANT1;
break;
- case 2:
- phy_ctl |= B43_TX4_PHY_ANT1;
+ case 3: /* Antenna 2 */
+ phy_ctl |= B43_TXH_PHY_ANT2;
+ break;
+ case 4: /* Antenna 3 */
+ phy_ctl |= B43_TXH_PHY_ANT3;
break;
default:
B43_WARN_ON(1);
@@ -286,14 +312,16 @@ static void generate_txhdr_fw4(struct b43_wldev *dev,
/* MAC control */
if (!(txctl->flags & IEEE80211_TXCTL_NO_ACK))
- mac_ctl |= B43_TX4_MAC_ACK;
+ mac_ctl |= B43_TXH_MAC_ACK;
if (!(((fctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL) &&
((fctl & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PSPOLL)))
- mac_ctl |= B43_TX4_MAC_HWSEQ;
+ mac_ctl |= B43_TXH_MAC_HWSEQ;
if (txctl->flags & IEEE80211_TXCTL_FIRST_FRAGMENT)
- mac_ctl |= B43_TX4_MAC_STMSDU;
+ mac_ctl |= B43_TXH_MAC_STMSDU;
if (phy->type == B43_PHYTYPE_A)
- mac_ctl |= B43_TX4_MAC_5GHZ;
+ mac_ctl |= B43_TXH_MAC_5GHZ;
+ if (txctl->flags & IEEE80211_TXCTL_LONG_RETRY_LIMIT)
+ mac_ctl |= B43_TXH_MAC_LONGFRAME;
/* Generate the RTS or CTS-to-self frame */
if ((txctl->flags & IEEE80211_TXCTL_USE_RTS_CTS) ||
@@ -302,6 +330,7 @@ static void generate_txhdr_fw4(struct b43_wldev *dev,
struct ieee80211_hdr *hdr;
int rts_rate, rts_rate_fb;
int rts_rate_ofdm, rts_rate_fb_ofdm;
+ struct b43_plcp_hdr6 *plcp;
rts_rate = txctl->rts_cts_rate;
rts_rate_ofdm = b43_is_ofdm_rate(rts_rate);
@@ -309,59 +338,85 @@ static void generate_txhdr_fw4(struct b43_wldev *dev,
rts_rate_fb_ofdm = b43_is_ofdm_rate(rts_rate_fb);
if (txctl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
- ieee80211_ctstoself_get(dev->wl->hw, dev->wl->if_id,
+ struct ieee80211_cts *cts;
+
+ if (b43_is_old_txhdr_format(dev)) {
+ cts = (struct ieee80211_cts *)
+ (txhdr->old_format.rts_frame);
+ } else {
+ cts = (struct ieee80211_cts *)
+ (txhdr->new_format.rts_frame);
+ }
+ ieee80211_ctstoself_get(dev->wl->hw, txctl->vif,
fragment_data, fragment_len,
- txctl,
- (struct ieee80211_cts *)(txhdr->
- rts_frame));
- mac_ctl |= B43_TX4_MAC_SENDCTS;
+ txctl, cts);
+ mac_ctl |= B43_TXH_MAC_SENDCTS;
len = sizeof(struct ieee80211_cts);
} else {
- ieee80211_rts_get(dev->wl->hw, dev->wl->if_id,
- fragment_data, fragment_len, txctl,
- (struct ieee80211_rts *)(txhdr->
- rts_frame));
- mac_ctl |= B43_TX4_MAC_SENDRTS;
+ struct ieee80211_rts *rts;
+
+ if (b43_is_old_txhdr_format(dev)) {
+ rts = (struct ieee80211_rts *)
+ (txhdr->old_format.rts_frame);
+ } else {
+ rts = (struct ieee80211_rts *)
+ (txhdr->new_format.rts_frame);
+ }
+ ieee80211_rts_get(dev->wl->hw, txctl->vif,
+ fragment_data, fragment_len,
+ txctl, rts);
+ mac_ctl |= B43_TXH_MAC_SENDRTS;
len = sizeof(struct ieee80211_rts);
}
len += FCS_LEN;
- b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->
- rts_plcp), len,
- rts_rate);
- b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->
- rts_plcp_fb),
+
+ /* Generate the PLCP headers for the RTS/CTS frame */
+ if (b43_is_old_txhdr_format(dev))
+ plcp = &txhdr->old_format.rts_plcp;
+ else
+ plcp = &txhdr->new_format.rts_plcp;
+ b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)plcp,
+ len, rts_rate);
+ plcp = &txhdr->rts_plcp_fb;
+ b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)plcp,
len, rts_rate_fb);
- hdr = (struct ieee80211_hdr *)(&txhdr->rts_frame);
+
+ if (b43_is_old_txhdr_format(dev)) {
+ hdr = (struct ieee80211_hdr *)
+ (&txhdr->old_format.rts_frame);
+ } else {
+ hdr = (struct ieee80211_hdr *)
+ (&txhdr->new_format.rts_frame);
+ }
txhdr->rts_dur_fb = hdr->duration_id;
+
if (rts_rate_ofdm) {
- extra_ft |= B43_TX4_EFT_RTSOFDM;
+ extra_ft |= B43_TXH_EFT_RTS_OFDM;
txhdr->phy_rate_rts =
b43_plcp_get_ratecode_ofdm(rts_rate);
- } else
+ } else {
+ extra_ft |= B43_TXH_EFT_RTS_CCK;
txhdr->phy_rate_rts =
b43_plcp_get_ratecode_cck(rts_rate);
+ }
if (rts_rate_fb_ofdm)
- extra_ft |= B43_TX4_EFT_RTSFBOFDM;
- mac_ctl |= B43_TX4_MAC_LONGFRAME;
+ extra_ft |= B43_TXH_EFT_RTSFB_OFDM;
+ else
+ extra_ft |= B43_TXH_EFT_RTSFB_CCK;
}
/* Magic cookie */
- txhdr->cookie = cpu_to_le16(cookie);
+ if (b43_is_old_txhdr_format(dev))
+ txhdr->old_format.cookie = cpu_to_le16(cookie);
+ else
+ txhdr->new_format.cookie = cpu_to_le16(cookie);
/* Apply the bitfields */
txhdr->mac_ctl = cpu_to_le32(mac_ctl);
txhdr->phy_ctl = cpu_to_le16(phy_ctl);
txhdr->extra_ft = extra_ft;
-}
-void b43_generate_txhdr(struct b43_wldev *dev,
- u8 * txhdr,
- const unsigned char *fragment_data,
- unsigned int fragment_len,
- const struct ieee80211_tx_control *txctl, u16 cookie)
-{
- generate_txhdr_fw4(dev, (struct b43_txhdr_fw4 *)txhdr,
- fragment_data, fragment_len, txctl, cookie);
+ return 0;
}
static s8 b43_rssi_postprocess(struct b43_wldev *dev,
@@ -384,7 +439,7 @@ static s8 b43_rssi_postprocess(struct b43_wldev *dev,
else
tmp -= 3;
} else {
- if (dev->dev->bus->sprom.r1.
+ if (dev->dev->bus->sprom.
boardflags_lo & B43_BFL_RSSI) {
if (in_rssi > 63)
in_rssi = 63;
@@ -488,7 +543,6 @@ void b43_rx(struct b43_wldev *dev, struct sk_buff *skb, const void *_rxhdr)
}
wlhdr = (struct ieee80211_hdr *)(skb->data);
fctl = le16_to_cpu(wlhdr->frame_control);
- skb_trim(skb, skb->len - FCS_LEN);
if (macstat & B43_RX_MAC_DEC) {
unsigned int keyidx;
@@ -525,27 +579,55 @@ void b43_rx(struct b43_wldev *dev, struct sk_buff *skb, const void *_rxhdr)
else
status.rate = b43_plcp_get_bitrate_cck(plcp);
status.antenna = !!(phystat0 & B43_RX_PHYST0_ANT);
- status.mactime = mactime;
+
+ /*
+ * If monitors are present get full 64-bit timestamp. This
+ * code assumes we get to process the packet within 16 bits
+ * of timestamp, i.e. about 65 milliseconds after the PHY
+ * received the first symbol.
+ */
+ if (dev->wl->radiotap_enabled) {
+ u16 low_mactime_now;
+
+ b43_tsf_read(dev, &status.mactime);
+ low_mactime_now = status.mactime;
+ status.mactime = status.mactime & ~0xFFFFULL;
+ status.mactime += mactime;
+ if (low_mactime_now <= mactime)
+ status.mactime -= 0x10000;
+ status.flag |= RX_FLAG_TSFT;
+ }
chanid = (chanstat & B43_RX_CHAN_ID) >> B43_RX_CHAN_ID_SHIFT;
switch (chanstat & B43_RX_CHAN_PHYTYPE) {
case B43_PHYTYPE_A:
status.phymode = MODE_IEEE80211A;
- status.freq = chanid;
- status.channel = b43_freq_to_channel_a(chanid);
- break;
- case B43_PHYTYPE_B:
- status.phymode = MODE_IEEE80211B;
- status.freq = chanid + 2400;
- status.channel = b43_freq_to_channel_bg(chanid + 2400);
+ B43_WARN_ON(1);
+ /* FIXME: We don't really know which value the "chanid" contains.
+ * So the following assignment might be wrong. */
+ status.channel = chanid;
+ status.freq = b43_channel_to_freq_5ghz(status.channel);
break;
case B43_PHYTYPE_G:
status.phymode = MODE_IEEE80211G;
+ /* chanid is the radio channel cookie value as used
+ * to tune the radio. */
status.freq = chanid + 2400;
- status.channel = b43_freq_to_channel_bg(chanid + 2400);
+ status.channel = b43_freq_to_channel_2ghz(status.freq);
+ break;
+ case B43_PHYTYPE_N:
+ status.phymode = 0xDEAD /*FIXME MODE_IEEE80211N*/;
+ /* chanid is the SHM channel cookie. Which is the plain
+ * channel number in b43. */
+ status.channel = chanid;
+ if (chanstat & B43_RX_CHAN_5GHZ)
+ status.freq = b43_freq_to_channel_5ghz(status.freq);
+ else
+ status.freq = b43_freq_to_channel_2ghz(status.freq);
break;
default:
B43_WARN_ON(1);
+ goto drop;
}
dev->stats.last_rx = jiffies;
@@ -575,10 +657,7 @@ void b43_handle_txstatus(struct b43_wldev *dev,
dev->wl->ieee_stats.dot11RTSSuccessCount++;
}
- if (b43_using_pio(dev))
- b43_pio_handle_txstatus(dev, status);
- else
- b43_dma_handle_txstatus(dev, status);
+ b43_dma_handle_txstatus(dev, status);
}
/* Handle TX status report as received through DMA/PIO queues */
@@ -607,19 +686,13 @@ void b43_handle_hwtxstatus(struct b43_wldev *dev,
/* Stop any TX operation on the device (suspend the hardware queues) */
void b43_tx_suspend(struct b43_wldev *dev)
{
- if (b43_using_pio(dev))
- b43_pio_freeze_txqueues(dev);
- else
- b43_dma_tx_suspend(dev);
+ b43_dma_tx_suspend(dev);
}
/* Resume any TX operation on the device (resume the hardware queues) */
void b43_tx_resume(struct b43_wldev *dev)
{
- if (b43_using_pio(dev))
- b43_pio_thaw_txqueues(dev);
- else
- b43_dma_tx_resume(dev);
+ b43_dma_tx_resume(dev);
}
#if 0
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-26 02:43:20 +0000