-/*
-
- Broadcom B43 wireless driver
-
- Transmission (TX/RX) related functions.
-
- Copyright (C) 2005 Martin Langer <martin-langer@gmx.de>
- 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>
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- 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; see the file COPYING. If not, write to
- the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
- Boston, MA 02110-1301, USA.
-
-*/
-
-#include "xmit.h"
-#include "phy.h"
-#include "dma.h"
-#include "pio.h"
-
-
-/* Extract the bitrate index out of a CCK PLCP header. */
-static int b43_plcp_get_bitrate_idx_cck(struct b43_plcp_hdr6 *plcp)
-{
- switch (plcp->raw[0]) {
- case 0x0A:
- return 0;
- case 0x14:
- return 1;
- case 0x37:
- return 2;
- case 0x6E:
- return 3;
- }
- B43_WARN_ON(1);
- return -1;
-}
-
-/* Extract the bitrate index out of an OFDM PLCP header. */
-static u8 b43_plcp_get_bitrate_idx_ofdm(struct b43_plcp_hdr6 *plcp, bool aphy)
-{
- int base = aphy ? 0 : 4;
-
- switch (plcp->raw[0] & 0xF) {
- case 0xB:
- return base + 0;
- case 0xF:
- return base + 1;
- case 0xA:
- return base + 2;
- case 0xE:
- return base + 3;
- case 0x9:
- return base + 4;
- case 0xD:
- return base + 5;
- case 0x8:
- return base + 6;
- case 0xC:
- return base + 7;
- }
- B43_WARN_ON(1);
- return -1;
-}
-
-u8 b43_plcp_get_ratecode_cck(const u8 bitrate)
-{
- switch (bitrate) {
- case B43_CCK_RATE_1MB:
- return 0x0A;
- case B43_CCK_RATE_2MB:
- return 0x14;
- case B43_CCK_RATE_5MB:
- return 0x37;
- case B43_CCK_RATE_11MB:
- return 0x6E;
- }
- B43_WARN_ON(1);
- return 0;
-}
-
-u8 b43_plcp_get_ratecode_ofdm(const u8 bitrate)
-{
- switch (bitrate) {
- case B43_OFDM_RATE_6MB:
- return 0xB;
- case B43_OFDM_RATE_9MB:
- return 0xF;
- case B43_OFDM_RATE_12MB:
- return 0xA;
- case B43_OFDM_RATE_18MB:
- return 0xE;
- case B43_OFDM_RATE_24MB:
- return 0x9;
- case B43_OFDM_RATE_36MB:
- return 0xD;
- case B43_OFDM_RATE_48MB:
- return 0x8;
- case B43_OFDM_RATE_54MB:
- return 0xC;
- }
- B43_WARN_ON(1);
- return 0;
-}
-
-void b43_generate_plcp_hdr(struct b43_plcp_hdr4 *plcp,
- const u16 octets, const u8 bitrate)
-{
- __le32 *data = &(plcp->data);
- __u8 *raw = plcp->raw;
-
- if (b43_is_ofdm_rate(bitrate)) {
- u32 d;
-
- d = b43_plcp_get_ratecode_ofdm(bitrate);
- B43_WARN_ON(octets & 0xF000);
- d |= (octets << 5);
- *data = cpu_to_le32(d);
- } else {
- u32 plen;
-
- plen = octets * 16 / bitrate;
- if ((octets * 16 % bitrate) > 0) {
- plen++;
- if ((bitrate == B43_CCK_RATE_11MB)
- && ((octets * 8 % 11) < 4)) {
- raw[1] = 0x84;
- } else
- raw[1] = 0x04;
- } else
- raw[1] = 0x04;
- *data |= cpu_to_le32(plen << 16);
- raw[0] = b43_plcp_get_ratecode_cck(bitrate);
- }
-}
-
-static u8 b43_calc_fallback_rate(u8 bitrate)
-{
- switch (bitrate) {
- case B43_CCK_RATE_1MB:
- return B43_CCK_RATE_1MB;
- case B43_CCK_RATE_2MB:
- return B43_CCK_RATE_1MB;
- case B43_CCK_RATE_5MB:
- return B43_CCK_RATE_2MB;
- case B43_CCK_RATE_11MB:
- return B43_CCK_RATE_5MB;
- case B43_OFDM_RATE_6MB:
- return B43_CCK_RATE_5MB;
- case B43_OFDM_RATE_9MB:
- return B43_OFDM_RATE_6MB;
- case B43_OFDM_RATE_12MB:
- return B43_OFDM_RATE_9MB;
- case B43_OFDM_RATE_18MB:
- return B43_OFDM_RATE_12MB;
- case B43_OFDM_RATE_24MB:
- return B43_OFDM_RATE_18MB;
- case B43_OFDM_RATE_36MB:
- return B43_OFDM_RATE_24MB;
- case B43_OFDM_RATE_48MB:
- return B43_OFDM_RATE_36MB;
- case B43_OFDM_RATE_54MB:
- return B43_OFDM_RATE_48MB;
- }
- B43_WARN_ON(1);
- return 0;
-}
-
-/* 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_info *info,
- 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;
- int use_encryption = (!(info->flags & IEEE80211_TX_CTL_DO_NOT_ENCRYPT));
- u16 fctl = le16_to_cpu(wlhdr->frame_control);
- struct ieee80211_rate *fbrate;
- u8 rate, rate_fb;
- int rate_ofdm, rate_fb_ofdm;
- unsigned int plcp_fragment_len;
- u32 mac_ctl = 0;
- u16 phy_ctl = 0;
- u8 extra_ft = 0;
- struct ieee80211_rate *txrate;
-
- memset(txhdr, 0, sizeof(*txhdr));
-
- txrate = ieee80211_get_tx_rate(dev->wl->hw, info);
- rate = txrate ? txrate->hw_value : B43_CCK_RATE_1MB;
- rate_ofdm = b43_is_ofdm_rate(rate);
- fbrate = ieee80211_get_alt_retry_rate(dev->wl->hw, info) ? : txrate;
- rate_fb = fbrate->hw_value;
- rate_fb_ofdm = b43_is_ofdm_rate(rate_fb);
-
- if (rate_ofdm)
- txhdr->phy_rate = b43_plcp_get_ratecode_ofdm(rate);
- else
- txhdr->phy_rate = b43_plcp_get_ratecode_cck(rate);
- txhdr->mac_frame_ctl = wlhdr->frame_control;
- memcpy(txhdr->tx_receiver, wlhdr->addr1, 6);
-
- /* Calculate duration for fallback rate */
- if ((rate_fb == rate) ||
- (wlhdr->duration_id & cpu_to_le16(0x8000)) ||
- (wlhdr->duration_id == cpu_to_le16(0))) {
- /* If the fallback rate equals the normal rate or the
- * dur_id field contains an AID, CFP magic or 0,
- * use the original dur_id field. */
- txhdr->dur_fb = wlhdr->duration_id;
- } else {
- txhdr->dur_fb = ieee80211_generic_frame_duration(
- dev->wl->hw, info->control.vif, fragment_len, fbrate);
- }
-
- plcp_fragment_len = fragment_len + FCS_LEN;
- if (use_encryption) {
- u8 key_idx = info->control.hw_key->hw_key_idx;
- struct b43_key *key;
- int wlhdr_len;
- size_t iv_len;
-
- B43_WARN_ON(key_idx >= dev->max_nr_keys);
- key = &(dev->key[key_idx]);
-
- 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 += info->control.icv_len;
-
- key_idx = b43_kidx_to_fw(dev, key_idx);
- 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) info->control.iv_len,
- ARRAY_SIZE(txhdr->iv));
- memcpy(txhdr->iv, ((u8 *) wlhdr) + wlhdr_len, iv_len);
- }
- 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_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
- * is a 5Ghz packet.
- */
- txhdr->chan_radio_code = phy->channel;
-
- /* PHY TX Control word */
- if (rate_ofdm)
- phy_ctl |= B43_TXH_PHY_ENC_OFDM;
- else
- phy_ctl |= B43_TXH_PHY_ENC_CCK;
- if (info->flags & IEEE80211_TX_CTL_SHORT_PREAMBLE)
- phy_ctl |= B43_TXH_PHY_SHORTPRMBL;
-
- switch (b43_ieee80211_antenna_sanitize(dev, info->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 2: /* Antenna 1 */
- phy_ctl |= B43_TXH_PHY_ANT1;
- break;
- 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);
- }
-
- /* MAC control */
- if (!(info->flags & IEEE80211_TX_CTL_NO_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_TXH_MAC_HWSEQ;
- if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
- mac_ctl |= B43_TXH_MAC_STMSDU;
- if (phy->type == B43_PHYTYPE_A)
- mac_ctl |= B43_TXH_MAC_5GHZ;
- if (info->flags & IEEE80211_TX_CTL_LONG_RETRY_LIMIT)
- mac_ctl |= B43_TXH_MAC_LONGFRAME;
-
- /* Generate the RTS or CTS-to-self frame */
- if ((info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) ||
- (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT)) {
- unsigned int len;
- struct ieee80211_hdr *hdr;
- int rts_rate, rts_rate_fb;
- int rts_rate_ofdm, rts_rate_fb_ofdm;
- struct b43_plcp_hdr6 *plcp;
- struct ieee80211_rate *rts_cts_rate;
-
- rts_cts_rate = ieee80211_get_rts_cts_rate(dev->wl->hw, info);
-
- rts_rate = rts_cts_rate ? rts_cts_rate->hw_value : B43_CCK_RATE_1MB;
- rts_rate_ofdm = b43_is_ofdm_rate(rts_rate);
- rts_rate_fb = b43_calc_fallback_rate(rts_rate);
- rts_rate_fb_ofdm = b43_is_ofdm_rate(rts_rate_fb);
-
- if (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT) {
- 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, info->control.vif,
- fragment_data, fragment_len,
- info, cts);
- mac_ctl |= B43_TXH_MAC_SENDCTS;
- len = sizeof(struct ieee80211_cts);
- } else {
- 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, info->control.vif,
- fragment_data, fragment_len,
- info, rts);
- mac_ctl |= B43_TXH_MAC_SENDRTS;
- len = sizeof(struct ieee80211_rts);
- }
- len += FCS_LEN;
-
- /* 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);
-
- 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_TXH_EFT_RTS_OFDM;
- txhdr->phy_rate_rts =
- b43_plcp_get_ratecode_ofdm(rts_rate);
- } 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_TXH_EFT_RTSFB_OFDM;
- else
- extra_ft |= B43_TXH_EFT_RTSFB_CCK;
- }
-
- /* Magic 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;
-
- return 0;
-}
-
-static s8 b43_rssi_postprocess(struct b43_wldev *dev,
- u8 in_rssi, int ofdm,
- int adjust_2053, int adjust_2050)
-{
- struct b43_phy *phy = &dev->phy;
- s32 tmp;
-
- switch (phy->radio_ver) {
- case 0x2050:
- if (ofdm) {
- tmp = in_rssi;
- if (tmp > 127)
- tmp -= 256;
- tmp *= 73;
- tmp /= 64;
- if (adjust_2050)
- tmp += 25;
- else
- tmp -= 3;
- } else {
- if (dev->dev->bus->sprom.
- boardflags_lo & B43_BFL_RSSI) {
- if (in_rssi > 63)
- in_rssi = 63;
- tmp = phy->nrssi_lt[in_rssi];
- tmp = 31 - tmp;
- tmp *= -131;
- tmp /= 128;
- tmp -= 57;
- } else {
- tmp = in_rssi;
- tmp = 31 - tmp;
- tmp *= -149;
- tmp /= 128;
- tmp -= 68;
- }
- if (phy->type == B43_PHYTYPE_G && adjust_2050)
- tmp += 25;
- }
- break;
- case 0x2060:
- if (in_rssi > 127)
- tmp = in_rssi - 256;
- else
- tmp = in_rssi;
- break;
- default:
- tmp = in_rssi;
- tmp -= 11;
- tmp *= 103;
- tmp /= 64;
- if (adjust_2053)
- tmp -= 109;
- else
- tmp -= 83;
- }
-
- return (s8) tmp;
-}
-
-//TODO
-#if 0
-static s8 b43_rssinoise_postprocess(struct b43_wldev *dev, u8 in_rssi)
-{
- struct b43_phy *phy = &dev->phy;
- s8 ret;
-
- if (phy->type == B43_PHYTYPE_A) {
- //TODO: Incomplete specs.
- ret = 0;
- } else
- ret = b43_rssi_postprocess(dev, in_rssi, 0, 1, 1);
-
- return ret;
-}
-#endif
-
-void b43_rx(struct b43_wldev *dev, struct sk_buff *skb, const void *_rxhdr)
-{
- struct ieee80211_rx_status status;
- struct b43_plcp_hdr6 *plcp;
- struct ieee80211_hdr *wlhdr;
- const struct b43_rxhdr_fw4 *rxhdr = _rxhdr;
- u16 fctl;
- u16 phystat0, phystat3, chanstat, mactime;
- u32 macstat;
- u16 chanid;
- u16 phytype;
- int padding;
-
- memset(&status, 0, sizeof(status));
-
- /* Get metadata about the frame from the header. */
- phystat0 = le16_to_cpu(rxhdr->phy_status0);
- phystat3 = le16_to_cpu(rxhdr->phy_status3);
- macstat = le32_to_cpu(rxhdr->mac_status);
- mactime = le16_to_cpu(rxhdr->mac_time);
- chanstat = le16_to_cpu(rxhdr->channel);
- phytype = chanstat & B43_RX_CHAN_PHYTYPE;
-
- if (macstat & B43_RX_MAC_FCSERR)
- dev->wl->ieee_stats.dot11FCSErrorCount++;
- if (macstat & B43_RX_MAC_DECERR) {
- /* Decryption with the given key failed.
- * Drop the packet. We also won't be able to decrypt it with
- * the key in software. */
- goto drop;
- }
-
- /* Skip PLCP and padding */
- padding = (macstat & B43_RX_MAC_PADDING) ? 2 : 0;
- if (unlikely(skb->len < (sizeof(struct b43_plcp_hdr6) + padding))) {
- b43dbg(dev->wl, "RX: Packet size underrun (1)\n");
- goto drop;
- }
- plcp = (struct b43_plcp_hdr6 *)(skb->data + padding);
- skb_pull(skb, sizeof(struct b43_plcp_hdr6) + padding);
- /* The skb contains the Wireless Header + payload data now */
- if (unlikely(skb->len < (2 + 2 + 6 /*minimum hdr */ + FCS_LEN))) {
- b43dbg(dev->wl, "RX: Packet size underrun (2)\n");
- goto drop;
- }
- wlhdr = (struct ieee80211_hdr *)(skb->data);
- fctl = le16_to_cpu(wlhdr->frame_control);
-
- if (macstat & B43_RX_MAC_DEC) {
- unsigned int keyidx;
- int wlhdr_len;
-
- keyidx = ((macstat & B43_RX_MAC_KEYIDX)
- >> B43_RX_MAC_KEYIDX_SHIFT);
- /* We must adjust the key index here. We want the "physical"
- * key index, but the ucode passed it slightly different.
- */
- keyidx = b43_kidx_to_raw(dev, keyidx);
- B43_WARN_ON(keyidx >= dev->max_nr_keys);
-
- if (dev->key[keyidx].algorithm != B43_SEC_ALGO_NONE) {
- wlhdr_len = ieee80211_get_hdrlen(fctl);
- if (unlikely(skb->len < (wlhdr_len + 3))) {
- b43dbg(dev->wl,
- "RX: Packet size underrun (3)\n");
- goto drop;
- }
- status.flag |= RX_FLAG_DECRYPTED;
- }
- }
-
- /* Link quality statistics */
- status.noise = dev->stats.link_noise;
- if ((chanstat & B43_RX_CHAN_PHYTYPE) == B43_PHYTYPE_N) {
-// s8 rssi = max(rxhdr->power0, rxhdr->power1);
- //TODO: Find out what the rssi value is (dBm or percentage?)
- // and also find out what the maximum possible value is.
- // Fill status.ssi and status.signal fields.
- } else {
- status.signal = b43_rssi_postprocess(dev, rxhdr->jssi,
- (phystat0 & B43_RX_PHYST0_OFDM),
- (phystat0 & B43_RX_PHYST0_GAINCTL),
- (phystat3 & B43_RX_PHYST3_TRSTATE));
- status.qual = (rxhdr->jssi * 100) / B43_RX_MAX_SSI;
- }
-
- if (phystat0 & B43_RX_PHYST0_OFDM)
- status.rate_idx = b43_plcp_get_bitrate_idx_ofdm(plcp,
- phytype == B43_PHYTYPE_A);
- else
- status.rate_idx = b43_plcp_get_bitrate_idx_cck(plcp);
- status.antenna = !!(phystat0 & B43_RX_PHYST0_ANT);
-
- /*
- * All frames on monitor interfaces and beacons always need a full
- * 64-bit timestamp. Monitor interfaces need it for diagnostic
- * purposes and beacons for IBSS merging.
- * 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 (((fctl & (IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE))
- == (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_BEACON)) ||
- 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.band = IEEE80211_BAND_5GHZ;
- B43_WARN_ON(1);
- /* FIXME: We don't really know which value the "chanid" contains.
- * So the following assignment might be wrong. */
- status.freq = b43_channel_to_freq_5ghz(chanid);
- break;
- case B43_PHYTYPE_G:
- status.band = IEEE80211_BAND_2GHZ;
- /* chanid is the radio channel cookie value as used
- * to tune the radio. */
- status.freq = chanid + 2400;
- break;
- case B43_PHYTYPE_N:
- /* chanid is the SHM channel cookie. Which is the plain
- * channel number in b43. */
- if (chanstat & B43_RX_CHAN_5GHZ) {
- status.band = IEEE80211_BAND_5GHZ;
- status.freq = b43_freq_to_channel_5ghz(chanid);
- } else {
- status.band = IEEE80211_BAND_2GHZ;
- status.freq = b43_freq_to_channel_2ghz(chanid);
- }
- break;
- default:
- B43_WARN_ON(1);
- goto drop;
- }
-
- dev->stats.last_rx = jiffies;
- ieee80211_rx_irqsafe(dev->wl->hw, skb, &status);
-
- return;
-drop:
- b43dbg(dev->wl, "RX: Packet dropped\n");
- dev_kfree_skb_any(skb);
-}
-
-void b43_handle_txstatus(struct b43_wldev *dev,
- const struct b43_txstatus *status)
-{
- b43_debugfs_log_txstat(dev, status);
-
- if (status->intermediate)
- return;
- if (status->for_ampdu)
- return;
- if (!status->acked)
- dev->wl->ieee_stats.dot11ACKFailureCount++;
- if (status->rts_count) {
- if (status->rts_count == 0xF) //FIXME
- dev->wl->ieee_stats.dot11RTSFailureCount++;
- else
- dev->wl->ieee_stats.dot11RTSSuccessCount++;
- }
-
- if (b43_using_pio_transfers(dev))
- b43_pio_handle_txstatus(dev, status);
- else
- b43_dma_handle_txstatus(dev, status);
-}
-
-/* Fill out the mac80211 TXstatus report based on the b43-specific
- * txstatus report data. This returns a boolean whether the frame was
- * successfully transmitted. */
-bool b43_fill_txstatus_report(struct ieee80211_tx_info *report,
- const struct b43_txstatus *status)
-{
- bool frame_success = 1;
-
- if (status->acked) {
- /* The frame was ACKed. */
- report->flags |= IEEE80211_TX_STAT_ACK;
- } else {
- /* The frame was not ACKed... */
- if (!(report->flags & IEEE80211_TX_CTL_NO_ACK)) {
- /* ...but we expected an ACK. */
- frame_success = 0;
- report->status.excessive_retries = 1;
- }
- }
- if (status->frame_count == 0) {
- /* The frame was not transmitted at all. */
- report->status.retry_count = 0;
- } else
- report->status.retry_count = status->frame_count - 1;
-
- return frame_success;
-}
-
-/* Stop any TX operation on the device (suspend the hardware queues) */
-void b43_tx_suspend(struct b43_wldev *dev)
-{
- if (b43_using_pio_transfers(dev))
- b43_pio_tx_suspend(dev);
- else
- 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_transfers(dev))
- b43_pio_tx_resume(dev);
- else
- b43_dma_tx_resume(dev);
-}
projects / openwrt.git / blobdiff