* Copyright (C) 2005-2007 Ulrich Kunitz <kune@deine-taler.de>
* Copyright (C) 2006-2007 Daniel Drake <dsd@gentoo.org>
* Copyright (C) 2006-2007 Michael Wu <flamingice@sourmilk.net>
- * Copyright (c) 2007 Luis R. Rodriguez <mcgrof@winlab.rutgers.edu>
+ * Copyright (C) 2007-2008 Luis R. Rodriguez <mcgrof@winlab.rutgers.edu>
*
* 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
#include "zd_def.h"
#include "zd_chip.h"
#include "zd_mac.h"
-#include "zd_ieee80211.h"
#include "zd_rf.h"
+struct zd_reg_alpha2_map {
+ u32 reg;
+ char alpha2[2];
+};
+
+static struct zd_reg_alpha2_map reg_alpha2_map[] = {
+ { ZD_REGDOMAIN_FCC, "US" },
+ { ZD_REGDOMAIN_IC, "CA" },
+ { ZD_REGDOMAIN_ETSI, "DE" }, /* Generic ETSI, use most restrictive */
+ { ZD_REGDOMAIN_JAPAN, "JP" },
+ { ZD_REGDOMAIN_JAPAN_ADD, "JP" },
+ { ZD_REGDOMAIN_SPAIN, "ES" },
+ { ZD_REGDOMAIN_FRANCE, "FR" },
+};
+
/* This table contains the hardware specific values for the modulation rates. */
static const struct ieee80211_rate zd_rates[] = {
- { .rate = 10,
- .val = ZD_CCK_RATE_1M,
- .flags = IEEE80211_RATE_CCK },
- { .rate = 20,
- .val = ZD_CCK_RATE_2M,
- .val2 = ZD_CCK_RATE_2M | ZD_CCK_PREA_SHORT,
- .flags = IEEE80211_RATE_CCK_2 },
- { .rate = 55,
- .val = ZD_CCK_RATE_5_5M,
- .val2 = ZD_CCK_RATE_5_5M | ZD_CCK_PREA_SHORT,
- .flags = IEEE80211_RATE_CCK_2 },
- { .rate = 110,
- .val = ZD_CCK_RATE_11M,
- .val2 = ZD_CCK_RATE_11M | ZD_CCK_PREA_SHORT,
- .flags = IEEE80211_RATE_CCK_2 },
- { .rate = 60,
- .val = ZD_OFDM_RATE_6M,
- .flags = IEEE80211_RATE_OFDM },
- { .rate = 90,
- .val = ZD_OFDM_RATE_9M,
- .flags = IEEE80211_RATE_OFDM },
- { .rate = 120,
- .val = ZD_OFDM_RATE_12M,
- .flags = IEEE80211_RATE_OFDM },
- { .rate = 180,
- .val = ZD_OFDM_RATE_18M,
- .flags = IEEE80211_RATE_OFDM },
- { .rate = 240,
- .val = ZD_OFDM_RATE_24M,
- .flags = IEEE80211_RATE_OFDM },
- { .rate = 360,
- .val = ZD_OFDM_RATE_36M,
- .flags = IEEE80211_RATE_OFDM },
- { .rate = 480,
- .val = ZD_OFDM_RATE_48M,
- .flags = IEEE80211_RATE_OFDM },
- { .rate = 540,
- .val = ZD_OFDM_RATE_54M,
- .flags = IEEE80211_RATE_OFDM },
+ { .bitrate = 10,
+ .hw_value = ZD_CCK_RATE_1M, },
+ { .bitrate = 20,
+ .hw_value = ZD_CCK_RATE_2M,
+ .hw_value_short = ZD_CCK_RATE_2M | ZD_CCK_PREA_SHORT,
+ .flags = IEEE80211_RATE_SHORT_PREAMBLE },
+ { .bitrate = 55,
+ .hw_value = ZD_CCK_RATE_5_5M,
+ .hw_value_short = ZD_CCK_RATE_5_5M | ZD_CCK_PREA_SHORT,
+ .flags = IEEE80211_RATE_SHORT_PREAMBLE },
+ { .bitrate = 110,
+ .hw_value = ZD_CCK_RATE_11M,
+ .hw_value_short = ZD_CCK_RATE_11M | ZD_CCK_PREA_SHORT,
+ .flags = IEEE80211_RATE_SHORT_PREAMBLE },
+ { .bitrate = 60,
+ .hw_value = ZD_OFDM_RATE_6M,
+ .flags = 0 },
+ { .bitrate = 90,
+ .hw_value = ZD_OFDM_RATE_9M,
+ .flags = 0 },
+ { .bitrate = 120,
+ .hw_value = ZD_OFDM_RATE_12M,
+ .flags = 0 },
+ { .bitrate = 180,
+ .hw_value = ZD_OFDM_RATE_18M,
+ .flags = 0 },
+ { .bitrate = 240,
+ .hw_value = ZD_OFDM_RATE_24M,
+ .flags = 0 },
+ { .bitrate = 360,
+ .hw_value = ZD_OFDM_RATE_36M,
+ .flags = 0 },
+ { .bitrate = 480,
+ .hw_value = ZD_OFDM_RATE_48M,
+ .flags = 0 },
+ { .bitrate = 540,
+ .hw_value = ZD_OFDM_RATE_54M,
+ .flags = 0 },
+};
+
+/*
+ * Zydas retry rates table. Each line is listed in the same order as
+ * in zd_rates[] and contains all the rate used when a packet is sent
+ * starting with a given rates. Let's consider an example :
+ *
+ * "11 Mbits : 4, 3, 2, 1, 0" means :
+ * - packet is sent using 4 different rates
+ * - 1st rate is index 3 (ie 11 Mbits)
+ * - 2nd rate is index 2 (ie 5.5 Mbits)
+ * - 3rd rate is index 1 (ie 2 Mbits)
+ * - 4th rate is index 0 (ie 1 Mbits)
+ */
+
+static const struct tx_retry_rate zd_retry_rates[] = {
+ { /* 1 Mbits */ 1, { 0 }},
+ { /* 2 Mbits */ 2, { 1, 0 }},
+ { /* 5.5 Mbits */ 3, { 2, 1, 0 }},
+ { /* 11 Mbits */ 4, { 3, 2, 1, 0 }},
+ { /* 6 Mbits */ 5, { 4, 3, 2, 1, 0 }},
+ { /* 9 Mbits */ 6, { 5, 4, 3, 2, 1, 0}},
+ { /* 12 Mbits */ 5, { 6, 3, 2, 1, 0 }},
+ { /* 18 Mbits */ 6, { 7, 6, 3, 2, 1, 0 }},
+ { /* 24 Mbits */ 6, { 8, 6, 3, 2, 1, 0 }},
+ { /* 36 Mbits */ 7, { 9, 8, 6, 3, 2, 1, 0 }},
+ { /* 48 Mbits */ 8, {10, 9, 8, 6, 3, 2, 1, 0 }},
+ { /* 54 Mbits */ 9, {11, 10, 9, 8, 6, 3, 2, 1, 0 }}
};
static const struct ieee80211_channel zd_channels[] = {
- { .chan = 1,
- .freq = 2412},
- { .chan = 2,
- .freq = 2417},
- { .chan = 3,
- .freq = 2422},
- { .chan = 4,
- .freq = 2427},
- { .chan = 5,
- .freq = 2432},
- { .chan = 6,
- .freq = 2437},
- { .chan = 7,
- .freq = 2442},
- { .chan = 8,
- .freq = 2447},
- { .chan = 9,
- .freq = 2452},
- { .chan = 10,
- .freq = 2457},
- { .chan = 11,
- .freq = 2462},
- { .chan = 12,
- .freq = 2467},
- { .chan = 13,
- .freq = 2472},
- { .chan = 14,
- .freq = 2484}
+ { .center_freq = 2412, .hw_value = 1 },
+ { .center_freq = 2417, .hw_value = 2 },
+ { .center_freq = 2422, .hw_value = 3 },
+ { .center_freq = 2427, .hw_value = 4 },
+ { .center_freq = 2432, .hw_value = 5 },
+ { .center_freq = 2437, .hw_value = 6 },
+ { .center_freq = 2442, .hw_value = 7 },
+ { .center_freq = 2447, .hw_value = 8 },
+ { .center_freq = 2452, .hw_value = 9 },
+ { .center_freq = 2457, .hw_value = 10 },
+ { .center_freq = 2462, .hw_value = 11 },
+ { .center_freq = 2467, .hw_value = 12 },
+ { .center_freq = 2472, .hw_value = 13 },
+ { .center_freq = 2484, .hw_value = 14 },
};
static void housekeeping_init(struct zd_mac *mac);
static void housekeeping_enable(struct zd_mac *mac);
static void housekeeping_disable(struct zd_mac *mac);
+static int zd_reg2alpha2(u8 regdomain, char *alpha2)
+{
+ unsigned int i;
+ struct zd_reg_alpha2_map *reg_map;
+ for (i = 0; i < ARRAY_SIZE(reg_alpha2_map); i++) {
+ reg_map = ®_alpha2_map[i];
+ if (regdomain == reg_map->reg) {
+ alpha2[0] = reg_map->alpha2[0];
+ alpha2[1] = reg_map->alpha2[1];
+ return 0;
+ }
+ }
+ return 1;
+}
+
int zd_mac_preinit_hw(struct ieee80211_hw *hw)
{
int r;
int r;
struct zd_mac *mac = zd_hw_mac(hw);
struct zd_chip *chip = &mac->chip;
+ char alpha2[2];
u8 default_regdomain;
r = zd_chip_enable_int(chip);
if (r)
goto disable_int;
- zd_geo_init(hw, mac->regdomain);
+ r = zd_reg2alpha2(mac->regdomain, alpha2);
+ if (r)
+ goto disable_int;
- r = 0;
+ r = regulatory_hint(hw->wiphy, alpha2);
disable_int:
zd_chip_disable_int(chip);
out:
return r;
}
-/**
- * clear_tx_skb_control_block - clears the control block of tx skbuffs
- * @skb: a &struct sk_buff pointer
- *
- * This clears the control block of skbuff buffers, which were transmitted to
- * the device. Notify that the function is not thread-safe, so prevent
- * multiple calls.
- */
-static void clear_tx_skb_control_block(struct sk_buff *skb)
-{
- struct zd_tx_skb_control_block *cb =
- (struct zd_tx_skb_control_block *)skb->cb;
-
- kfree(cb->control);
- cb->control = NULL;
-}
-
-/**
- * kfree_tx_skb - frees a tx skbuff
- * @skb: a &struct sk_buff pointer
- *
- * Frees the tx skbuff. Frees also the allocated control structure in the
- * control block if necessary.
- */
-static void kfree_tx_skb(struct sk_buff *skb)
-{
- clear_tx_skb_control_block(skb);
- dev_kfree_skb_any(skb);
-}
-
static void zd_op_stop(struct ieee80211_hw *hw)
{
struct zd_mac *mac = zd_hw_mac(hw);
while ((skb = skb_dequeue(ack_wait_queue)))
- kfree_tx_skb(skb);
+ dev_kfree_skb_any(skb);
}
/**
- * init_tx_skb_control_block - initializes skb control block
- * @skb: a &sk_buff pointer
- * @dev: pointer to the mac80221 device
- * @control: mac80211 tx control applying for the frame in @skb
- *
- * Initializes the control block of the skbuff to be transmitted.
- */
-static int init_tx_skb_control_block(struct sk_buff *skb,
- struct ieee80211_hw *hw,
- struct ieee80211_tx_control *control)
-{
- struct zd_tx_skb_control_block *cb =
- (struct zd_tx_skb_control_block *)skb->cb;
-
- ZD_ASSERT(sizeof(*cb) <= sizeof(skb->cb));
- memset(cb, 0, sizeof(*cb));
- cb->hw= hw;
- cb->control = kmalloc(sizeof(*control), GFP_ATOMIC);
- if (cb->control == NULL)
- return -ENOMEM;
- memcpy(cb->control, control, sizeof(*control));
-
- return 0;
-}
-
-/**
- * tx_status - reports tx status of a packet if required
+ * zd_mac_tx_status - reports tx status of a packet if required
* @hw - a &struct ieee80211_hw pointer
* @skb - a sk-buffer
- * @status - the tx status of the packet without control information
- * @success - True for successfull transmission of the frame
+ * @flags: extra flags to set in the TX status info
+ * @ackssi: ACK signal strength
+ * @success - True for successful transmission of the frame
*
* This information calls ieee80211_tx_status_irqsafe() if required by the
* control information. It copies the control information into the status
*
* If no status information has been requested, the skb is freed.
*/
-static void tx_status(struct ieee80211_hw *hw, struct sk_buff *skb,
- struct ieee80211_tx_status *status,
- bool success)
+static void zd_mac_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb,
+ int ackssi, struct tx_status *tx_status)
{
- struct zd_tx_skb_control_block *cb = (struct zd_tx_skb_control_block *)
- skb->cb;
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ int i;
+ int success = 1, retry = 1;
+ int first_idx;
+ const struct tx_retry_rate *retries;
+
+ ieee80211_tx_info_clear_status(info);
+
+ if (tx_status) {
+ success = !tx_status->failure;
+ retry = tx_status->retry + success;
+ }
+
+ if (success) {
+ /* success */
+ info->flags |= IEEE80211_TX_STAT_ACK;
+ } else {
+ /* failure */
+ info->flags &= ~IEEE80211_TX_STAT_ACK;
+ }
+
+ first_idx = info->status.rates[0].idx;
+ ZD_ASSERT(0<=first_idx && first_idx<ARRAY_SIZE(zd_retry_rates));
+ retries = &zd_retry_rates[first_idx];
+ ZD_ASSERT(0<=retry && retry<=retries->count);
- ZD_ASSERT(cb->control != NULL);
- memcpy(&status->control, cb->control, sizeof(status->control));
- if (!success)
- status->excessive_retries = 1;
- clear_tx_skb_control_block(skb);
- ieee80211_tx_status_irqsafe(hw, skb, status);
+ info->status.rates[0].idx = retries->rate[0];
+ info->status.rates[0].count = 1; // (retry > 1 ? 2 : 1);
+
+ for (i=1; i<IEEE80211_TX_MAX_RATES-1 && i<retry; i++) {
+ info->status.rates[i].idx = retries->rate[i];
+ info->status.rates[i].count = 1; // ((i==retry-1) && success ? 1:2);
+ }
+ for (; i<IEEE80211_TX_MAX_RATES && i<retry; i++) {
+ info->status.rates[i].idx = retries->rate[retry-1];
+ info->status.rates[i].count = 1; // (success ? 1:2);
+ }
+ if (i<IEEE80211_TX_MAX_RATES)
+ info->status.rates[i].idx = -1; /* terminate */
+
+ info->status.ack_signal = ackssi;
+ ieee80211_tx_status_irqsafe(hw, skb);
}
/**
* zd_mac_tx_failed - callback for failed frames
* @dev: the mac80211 wireless device
*
- * This function is called if a frame couldn't be succesfully be
+ * This function is called if a frame couldn't be successfully be
* transferred. The first frame from the tx queue, will be selected and
* reported as error to the upper layers.
*/
-void zd_mac_tx_failed(struct ieee80211_hw *hw)
+void zd_mac_tx_failed(struct urb *urb)
{
- struct sk_buff_head *q = &zd_hw_mac(hw)->ack_wait_queue;
+ struct ieee80211_hw * hw = zd_usb_to_hw(urb->context);
+ struct zd_mac *mac = zd_hw_mac(hw);
+ struct sk_buff_head *q = &mac->ack_wait_queue;
struct sk_buff *skb;
- struct ieee80211_tx_status status = {{0}};
+ struct tx_status *tx_status = (struct tx_status *)urb->transfer_buffer;
+ unsigned long flags;
+ int success = !tx_status->failure;
+ int retry = tx_status->retry + success;
+ int found = 0;
+ int i, position = 0;
- skb = skb_dequeue(q);
- if (skb == NULL)
- return;
- tx_status(hw, skb, &status, 0);
+ q = &mac->ack_wait_queue;
+ spin_lock_irqsave(&q->lock, flags);
+
+ skb_queue_walk(q, skb) {
+ struct ieee80211_hdr *tx_hdr;
+ struct ieee80211_tx_info *info;
+ int first_idx, final_idx;
+ const struct tx_retry_rate *retries;
+ u8 final_rate;
+
+ position ++;
+
+ /* if the hardware reports a failure and we had a 802.11 ACK
+ * pending, then we skip the first skb when searching for a
+ * matching frame */
+ if (tx_status->failure && mac->ack_pending &&
+ skb_queue_is_first(q, skb)) {
+ continue;
+ }
+
+ tx_hdr = (struct ieee80211_hdr *)skb->data;
+
+ /* we skip all frames not matching the reported destination */
+ if (unlikely(memcmp(tx_hdr->addr1, tx_status->mac, ETH_ALEN))) {
+ continue;
+ }
+
+ /* we skip all frames not matching the reported final rate */
+
+ info = IEEE80211_SKB_CB(skb);
+ first_idx = info->status.rates[0].idx;
+ ZD_ASSERT(0<=first_idx && first_idx<ARRAY_SIZE(zd_retry_rates));
+ retries = &zd_retry_rates[first_idx];
+ if (retry < 0 || retry > retries->count) {
+ continue;
+ }
+
+ ZD_ASSERT(0<=retry && retry<=retries->count);
+ final_idx = retries->rate[retry-1];
+ final_rate = zd_rates[final_idx].hw_value;
+
+ if (final_rate != tx_status->rate) {
+ continue;
+ }
+
+ found = 1;
+ break;
+ }
+
+ if (found) {
+ for (i=1; i<=position; i++) {
+ skb = __skb_dequeue(q);
+ zd_mac_tx_status(hw, skb,
+ mac->ack_pending ? mac->ack_signal : 0,
+ i == position ? tx_status : NULL);
+ mac->ack_pending = 0;
+ }
+ }
+
+ spin_unlock_irqrestore(&q->lock, flags);
}
/**
*/
void zd_mac_tx_to_dev(struct sk_buff *skb, int error)
{
- struct zd_tx_skb_control_block *cb =
- (struct zd_tx_skb_control_block *)skb->cb;
- struct ieee80211_hw *hw = cb->hw;
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ struct ieee80211_hw *hw = info->rate_driver_data[0];
+ struct zd_mac *mac = zd_hw_mac(hw);
- if (likely(cb->control)) {
- skb_pull(skb, sizeof(struct zd_ctrlset));
- if (unlikely(error ||
- (cb->control->flags & IEEE80211_TXCTL_NO_ACK)))
- {
- struct ieee80211_tx_status status = {{0}};
- tx_status(hw, skb, &status, !error);
- } else {
- struct sk_buff_head *q =
- &zd_hw_mac(hw)->ack_wait_queue;
+ ieee80211_tx_info_clear_status(info);
- skb_queue_tail(q, skb);
- while (skb_queue_len(q) > ZD_MAC_MAX_ACK_WAITERS)
- zd_mac_tx_failed(hw);
- }
+ skb_pull(skb, sizeof(struct zd_ctrlset));
+ if (unlikely(error ||
+ (info->flags & IEEE80211_TX_CTL_NO_ACK))) {
+ /*
+ * FIXME : do we need to fill in anything ?
+ */
+ ieee80211_tx_status_irqsafe(hw, skb);
} else {
- kfree_tx_skb(skb);
+ struct sk_buff_head *q = &mac->ack_wait_queue;
+
+ skb_queue_tail(q, skb);
+ while (skb_queue_len(q) > ZD_MAC_MAX_ACK_WAITERS) {
+ zd_mac_tx_status(hw, skb_dequeue(q),
+ mac->ack_pending ? mac->ack_signal : 0,
+ NULL);
+ mac->ack_pending = 0;
+ }
}
}
}
static void cs_set_control(struct zd_mac *mac, struct zd_ctrlset *cs,
- struct ieee80211_hdr *header, u32 flags)
+ struct ieee80211_hdr *header,
+ struct ieee80211_tx_info *info)
{
- u16 fctl = le16_to_cpu(header->frame_control);
-
/*
* CONTROL TODO:
* - if backoff needed, enable bit 0
cs->control = 0;
/* First fragment */
- if (flags & IEEE80211_TXCTL_FIRST_FRAGMENT)
+ if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
cs->control |= ZD_CS_NEED_RANDOM_BACKOFF;
- /* Multicast */
- if (is_multicast_ether_addr(header->addr1))
- cs->control |= ZD_CS_MULTICAST;
+ /* No ACK expected (multicast, etc.) */
+ if (info->flags & IEEE80211_TX_CTL_NO_ACK)
+ cs->control |= ZD_CS_NO_ACK;
/* PS-POLL */
- if ((fctl & (IEEE80211_FCTL_FTYPE|IEEE80211_FCTL_STYPE)) ==
- (IEEE80211_FTYPE_CTL|IEEE80211_STYPE_PSPOLL))
+ if (ieee80211_is_pspoll(header->frame_control))
cs->control |= ZD_CS_PS_POLL_FRAME;
- if (flags & IEEE80211_TXCTL_USE_RTS_CTS)
+ if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS)
cs->control |= ZD_CS_RTS;
- if (flags & IEEE80211_TXCTL_USE_CTS_PROTECT)
+ if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
cs->control |= ZD_CS_SELF_CTS;
/* FIXME: Management frame? */
}
+static int zd_mac_config_beacon(struct ieee80211_hw *hw, struct sk_buff *beacon)
+{
+ struct zd_mac *mac = zd_hw_mac(hw);
+ int r;
+ u32 tmp, j = 0;
+ /* 4 more bytes for tail CRC */
+ u32 full_len = beacon->len + 4;
+
+ r = zd_iowrite32(&mac->chip, CR_BCN_FIFO_SEMAPHORE, 0);
+ if (r < 0)
+ return r;
+ r = zd_ioread32(&mac->chip, CR_BCN_FIFO_SEMAPHORE, &tmp);
+ if (r < 0)
+ return r;
+
+ while (tmp & 0x2) {
+ r = zd_ioread32(&mac->chip, CR_BCN_FIFO_SEMAPHORE, &tmp);
+ if (r < 0)
+ return r;
+ if ((++j % 100) == 0) {
+ printk(KERN_ERR "CR_BCN_FIFO_SEMAPHORE not ready\n");
+ if (j >= 500) {
+ printk(KERN_ERR "Giving up beacon config.\n");
+ return -ETIMEDOUT;
+ }
+ }
+ msleep(1);
+ }
+
+ r = zd_iowrite32(&mac->chip, CR_BCN_FIFO, full_len - 1);
+ if (r < 0)
+ return r;
+ if (zd_chip_is_zd1211b(&mac->chip)) {
+ r = zd_iowrite32(&mac->chip, CR_BCN_LENGTH, full_len - 1);
+ if (r < 0)
+ return r;
+ }
+
+ for (j = 0 ; j < beacon->len; j++) {
+ r = zd_iowrite32(&mac->chip, CR_BCN_FIFO,
+ *((u8 *)(beacon->data + j)));
+ if (r < 0)
+ return r;
+ }
+
+ for (j = 0; j < 4; j++) {
+ r = zd_iowrite32(&mac->chip, CR_BCN_FIFO, 0x0);
+ if (r < 0)
+ return r;
+ }
+
+ r = zd_iowrite32(&mac->chip, CR_BCN_FIFO_SEMAPHORE, 1);
+ if (r < 0)
+ return r;
+
+ /* 802.11b/g 2.4G CCK 1Mb
+ * 802.11a, not yet implemented, uses different values (see GPL vendor
+ * driver)
+ */
+ return zd_iowrite32(&mac->chip, CR_BCN_PLCP_CFG, 0x00000400 |
+ (full_len << 19));
+}
+
static int fill_ctrlset(struct zd_mac *mac,
- struct sk_buff *skb,
- struct ieee80211_tx_control *control)
+ struct sk_buff *skb)
{
int r;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
unsigned int frag_len = skb->len + FCS_LEN;
unsigned int packet_length;
+ struct ieee80211_rate *txrate;
struct zd_ctrlset *cs = (struct zd_ctrlset *)
skb_push(skb, sizeof(struct zd_ctrlset));
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
ZD_ASSERT(frag_len <= 0xffff);
- cs->modulation = control->tx_rate;
+ txrate = ieee80211_get_tx_rate(mac->hw, info);
+
+ cs->modulation = txrate->hw_value;
+ if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
+ cs->modulation = txrate->hw_value_short;
cs->tx_length = cpu_to_le16(frag_len);
- cs_set_control(mac, cs, hdr, control->flags);
+ cs_set_control(mac, cs, hdr, info);
packet_length = frag_len + sizeof(struct zd_ctrlset) + 10;
ZD_ASSERT(packet_length <= 0xffff);
* control block of the skbuff will be initialized. If necessary the incoming
* mac80211 queues will be stopped.
*/
-static int zd_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
- struct ieee80211_tx_control *control)
+static int zd_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
{
struct zd_mac *mac = zd_hw_mac(hw);
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
int r;
- r = fill_ctrlset(mac, skb, control);
+ r = fill_ctrlset(mac, skb);
if (r)
- return r;
+ goto fail;
+
+ info->rate_driver_data[0] = hw;
- r = init_tx_skb_control_block(skb, hw, control);
- if (r)
- return r;
r = zd_usb_tx(&mac->chip.usb, skb);
- if (r) {
- clear_tx_skb_control_block(skb);
- return r;
- }
+ if (r)
+ goto fail;
+ return 0;
+
+fail:
+ dev_kfree_skb(skb);
return 0;
}
static int filter_ack(struct ieee80211_hw *hw, struct ieee80211_hdr *rx_hdr,
struct ieee80211_rx_status *stats)
{
- u16 fc = le16_to_cpu(rx_hdr->frame_control);
+ struct zd_mac *mac = zd_hw_mac(hw);
struct sk_buff *skb;
struct sk_buff_head *q;
unsigned long flags;
+ int found = 0;
+ int i, position = 0;
- if ((fc & (IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) !=
- (IEEE80211_FTYPE_CTL | IEEE80211_STYPE_ACK))
+ if (!ieee80211_is_ack(rx_hdr->frame_control))
return 0;
- q = &zd_hw_mac(hw)->ack_wait_queue;
+ q = &mac->ack_wait_queue;
spin_lock_irqsave(&q->lock, flags);
- for (skb = q->next; skb != (struct sk_buff *)q; skb = skb->next) {
+ skb_queue_walk(q, skb) {
struct ieee80211_hdr *tx_hdr;
+ position ++;
+
+ if (mac->ack_pending && skb_queue_is_first(q, skb))
+ continue;
+
tx_hdr = (struct ieee80211_hdr *)skb->data;
- if (likely(!compare_ether_addr(tx_hdr->addr2, rx_hdr->addr1)))
+ if (likely(!memcmp(tx_hdr->addr2, rx_hdr->addr1, ETH_ALEN)))
{
- struct ieee80211_tx_status status = {{0}};
- status.flags = IEEE80211_TX_STATUS_ACK;
- status.ack_signal = stats->ssi;
- __skb_unlink(skb, q);
- tx_status(hw, skb, &status, 1);
- goto out;
+ found = 1;
+ break;
}
}
-out:
+
+ if (found) {
+ for (i=1; i<position; i++) {
+ skb = __skb_dequeue(q);
+ zd_mac_tx_status(hw, skb,
+ mac->ack_pending ? mac->ack_signal : 0,
+ NULL);
+ mac->ack_pending = 0;
+ }
+
+ mac->ack_pending = 1;
+ mac->ack_signal = stats->signal;
+ }
+
spin_unlock_irqrestore(&q->lock, flags);
return 1;
}
const struct rx_status *status;
struct sk_buff *skb;
int bad_frame = 0;
- u16 fc;
- bool is_qos, is_4addr, need_padding;
+ __le16 fc;
+ int need_padding;
+ int i;
+ u8 rate;
if (length < ZD_PLCP_HEADER_SIZE + 10 /* IEEE80211_1ADDR_LEN */ +
FCS_LEN + sizeof(struct rx_status))
}
}
- stats.channel = _zd_chip_get_channel(&mac->chip);
- stats.freq = zd_channels[stats.channel - 1].freq;
- stats.phymode = MODE_IEEE80211G;
- stats.ssi = status->signal_strength;
- stats.signal = zd_rx_qual_percent(buffer,
+ stats.freq = zd_channels[_zd_chip_get_channel(&mac->chip) - 1].center_freq;
+ stats.band = IEEE80211_BAND_2GHZ;
+ stats.signal = status->signal_strength;
+ stats.qual = zd_rx_qual_percent(buffer,
length - sizeof(struct rx_status),
status);
- stats.rate = zd_rx_rate(buffer, status);
+
+ rate = zd_rx_rate(buffer, status);
+
+ /* todo: return index in the big switches in zd_rx_rate instead */
+ for (i = 0; i < mac->band.n_bitrates; i++)
+ if (rate == mac->band.bitrates[i].hw_value)
+ stats.rate_idx = i;
length -= ZD_PLCP_HEADER_SIZE + sizeof(struct rx_status);
buffer += ZD_PLCP_HEADER_SIZE;
&& !mac->pass_ctrl)
return 0;
- fc = le16_to_cpu(*((__le16 *) buffer));
-
- is_qos = ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) &&
- ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_QOS_DATA);
- is_4addr = (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
- (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS);
- need_padding = is_qos ^ is_4addr;
+ fc = get_unaligned((__le16*)buffer);
+ need_padding = ieee80211_is_data_qos(fc) ^ ieee80211_has_a4(fc);
skb = dev_alloc_skb(length + (need_padding ? 2 : 0));
if (skb == NULL)
skb_reserve(skb, 2);
}
+ /* FIXME : could we avoid this big memcpy ? */
memcpy(skb_put(skb, length), buffer, length);
- ieee80211_rx_irqsafe(hw, skb, &stats);
+ memcpy(IEEE80211_SKB_RXCB(skb), &stats, sizeof(stats));
+ ieee80211_rx_irqsafe(hw, skb);
return 0;
}
{
struct zd_mac *mac = zd_hw_mac(hw);
- /* using IEEE80211_IF_TYPE_INVALID to indicate no mode selected */
- if (mac->type != IEEE80211_IF_TYPE_INVALID)
+ /* using NL80211_IFTYPE_UNSPECIFIED to indicate no mode selected */
+ if (mac->type != NL80211_IFTYPE_UNSPECIFIED)
return -EOPNOTSUPP;
switch (conf->type) {
- case IEEE80211_IF_TYPE_MNTR:
- case IEEE80211_IF_TYPE_STA:
+ case NL80211_IFTYPE_MONITOR:
+ case NL80211_IFTYPE_MESH_POINT:
+ case NL80211_IFTYPE_STATION:
+ case NL80211_IFTYPE_ADHOC:
mac->type = conf->type;
break;
default:
struct ieee80211_if_init_conf *conf)
{
struct zd_mac *mac = zd_hw_mac(hw);
- mac->type = IEEE80211_IF_TYPE_INVALID;
+ mac->type = NL80211_IFTYPE_UNSPECIFIED;
+ zd_set_beacon_interval(&mac->chip, 0);
zd_write_mac_addr(&mac->chip, NULL);
}
-static int zd_op_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
+static int zd_op_config(struct ieee80211_hw *hw, u32 changed)
{
struct zd_mac *mac = zd_hw_mac(hw);
- return zd_chip_set_channel(&mac->chip, conf->channel);
+ struct ieee80211_conf *conf = &hw->conf;
+
+ return zd_chip_set_channel(&mac->chip, conf->channel->hw_value);
}
-static int zd_op_config_interface(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- struct ieee80211_if_conf *conf)
+static void zd_process_intr(struct work_struct *work)
{
- struct zd_mac *mac = zd_hw_mac(hw);
+ u16 int_status;
+ struct zd_mac *mac = container_of(work, struct zd_mac, process_intr);
- spin_lock_irq(&mac->lock);
- mac->associated = is_valid_ether_addr(conf->bssid);
- spin_unlock_irq(&mac->lock);
+ int_status = le16_to_cpu(*(__le16 *)(mac->intr_buffer+4));
+ if (int_status & INT_CFG_NEXT_BCN)
+ dev_dbg_f_limit(zd_mac_dev(mac), "INT_CFG_NEXT_BCN\n");
+ else
+ dev_dbg_f(zd_mac_dev(mac), "Unsupported interrupt\n");
- /* TODO: do hardware bssid filtering */
- return 0;
+ zd_chip_enable_hwint(&mac->chip);
}
+
static void set_multicast_hash_handler(struct work_struct *work)
{
struct zd_mac *mac =
dev_err(zd_mac_dev(mac), "set_rx_filter_handler error %d\n", r);
}
+static u64 zd_op_prepare_multicast(struct ieee80211_hw *hw,
+ int mc_count, struct dev_addr_list *mclist)
+{
+ struct zd_mac *mac = zd_hw_mac(hw);
+ struct zd_mc_hash hash;
+ int i;
+
+ zd_mc_clear(&hash);
+
+ for (i = 0; i < mc_count; i++) {
+ if (!mclist)
+ break;
+ dev_dbg_f(zd_mac_dev(mac), "mc addr %pM\n", mclist->dmi_addr);
+ zd_mc_add_addr(&hash, mclist->dmi_addr);
+ mclist = mclist->next;
+ }
+
+ return hash.low | ((u64)hash.high << 32);
+}
+
#define SUPPORTED_FIF_FLAGS \
(FIF_PROMISC_IN_BSS | FIF_ALLMULTI | FIF_FCSFAIL | FIF_CONTROL | \
- FIF_OTHER_BSS)
+ FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC)
static void zd_op_configure_filter(struct ieee80211_hw *hw,
unsigned int changed_flags,
unsigned int *new_flags,
- int mc_count, struct dev_mc_list *mclist)
+ u64 multicast)
{
- struct zd_mc_hash hash;
+ struct zd_mc_hash hash = {
+ .low = multicast,
+ .high = multicast >> 32,
+ };
struct zd_mac *mac = zd_hw_mac(hw);
unsigned long flags;
- int i;
/* Only deal with supported flags */
changed_flags &= SUPPORTED_FIF_FLAGS;
if (!changed_flags)
return;
- if (*new_flags & (FIF_PROMISC_IN_BSS | FIF_ALLMULTI)) {
+ if (*new_flags & (FIF_PROMISC_IN_BSS | FIF_ALLMULTI))
zd_mc_add_all(&hash);
- } else {
- DECLARE_MAC_BUF(macbuf);
-
- zd_mc_clear(&hash);
- for (i = 0; i < mc_count; i++) {
- if (!mclist)
- break;
- dev_dbg_f(zd_mac_dev(mac), "mc addr %s\n",
- print_mac(macbuf, mclist->dmi_addr));
- zd_mc_add_addr(&hash, mclist->dmi_addr);
- mclist = mclist->next;
- }
- }
spin_lock_irqsave(&mac->lock, flags);
mac->pass_failed_fcs = !!(*new_flags & FIF_FCSFAIL);
mac->pass_ctrl = !!(*new_flags & FIF_CONTROL);
mac->multicast_hash = hash;
spin_unlock_irqrestore(&mac->lock, flags);
+
+ /* XXX: these can be called here now, can sleep now! */
queue_work(zd_workqueue, &mac->set_multicast_hash_work);
if (changed_flags & FIF_CONTROL)
{
struct zd_mac *mac = zd_hw_mac(hw);
unsigned long flags;
+ int associated;
dev_dbg_f(zd_mac_dev(mac), "changes: %x\n", changes);
+ if (mac->type == NL80211_IFTYPE_MESH_POINT ||
+ mac->type == NL80211_IFTYPE_ADHOC) {
+ associated = true;
+ if (changes & BSS_CHANGED_BEACON) {
+ struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
+
+ if (beacon) {
+ zd_mac_config_beacon(hw, beacon);
+ kfree_skb(beacon);
+ }
+ }
+
+ if (changes & BSS_CHANGED_BEACON_ENABLED) {
+ u32 interval;
+
+ if (bss_conf->enable_beacon)
+ interval = BCN_MODE_IBSS |
+ bss_conf->beacon_int;
+ else
+ interval = 0;
+
+ zd_set_beacon_interval(&mac->chip, interval);
+ }
+ } else
+ associated = is_valid_ether_addr(bss_conf->bssid);
+
+ spin_lock_irq(&mac->lock);
+ mac->associated = associated;
+ spin_unlock_irq(&mac->lock);
+
+ /* TODO: do hardware bssid filtering */
+
if (changes & BSS_CHANGED_ERP_PREAMBLE) {
spin_lock_irqsave(&mac->lock, flags);
mac->short_preamble = bss_conf->use_short_preamble;
}
}
+static u64 zd_op_get_tsf(struct ieee80211_hw *hw)
+{
+ struct zd_mac *mac = zd_hw_mac(hw);
+ return zd_chip_get_tsf(&mac->chip);
+}
+
static const struct ieee80211_ops zd_ops = {
.tx = zd_op_tx,
.start = zd_op_start,
.add_interface = zd_op_add_interface,
.remove_interface = zd_op_remove_interface,
.config = zd_op_config,
- .config_interface = zd_op_config_interface,
+ .prepare_multicast = zd_op_prepare_multicast,
.configure_filter = zd_op_configure_filter,
.bss_info_changed = zd_op_bss_info_changed,
+ .get_tsf = zd_op_get_tsf,
};
struct ieee80211_hw *zd_mac_alloc_hw(struct usb_interface *intf)
{
struct zd_mac *mac;
struct ieee80211_hw *hw;
- int i;
hw = ieee80211_alloc_hw(sizeof(struct zd_mac), &zd_ops);
if (!hw) {
spin_lock_init(&mac->lock);
mac->hw = hw;
- mac->type = IEEE80211_IF_TYPE_INVALID;
+ mac->type = NL80211_IFTYPE_UNSPECIFIED;
memcpy(mac->channels, zd_channels, sizeof(zd_channels));
memcpy(mac->rates, zd_rates, sizeof(zd_rates));
- mac->modes[0].mode = MODE_IEEE80211G;
- mac->modes[0].num_rates = ARRAY_SIZE(zd_rates);
- mac->modes[0].rates = mac->rates;
- mac->modes[0].num_channels = ARRAY_SIZE(zd_channels);
- mac->modes[0].channels = mac->channels;
- mac->modes[1].mode = MODE_IEEE80211B;
- mac->modes[1].num_rates = 4;
- mac->modes[1].rates = mac->rates;
- mac->modes[1].num_channels = ARRAY_SIZE(zd_channels);
- mac->modes[1].channels = mac->channels;
+ mac->band.n_bitrates = ARRAY_SIZE(zd_rates);
+ mac->band.bitrates = mac->rates;
+ mac->band.n_channels = ARRAY_SIZE(zd_channels);
+ mac->band.channels = mac->channels;
+
+ hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &mac->band;
hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
- IEEE80211_HW_DEFAULT_REG_DOMAIN_CONFIGURED;
- hw->max_rssi = 100;
- hw->max_signal = 100;
+ IEEE80211_HW_SIGNAL_UNSPEC;
+ hw->wiphy->interface_modes =
+ BIT(NL80211_IFTYPE_MESH_POINT) |
+ BIT(NL80211_IFTYPE_STATION) |
+ BIT(NL80211_IFTYPE_ADHOC);
+
+ hw->max_signal = 100;
hw->queues = 1;
hw->extra_tx_headroom = sizeof(struct zd_ctrlset);
- skb_queue_head_init(&mac->ack_wait_queue);
+ /*
+ * Tell mac80211 that we support multi rate retries
+ */
+ hw->max_rates = IEEE80211_TX_MAX_RATES;
+ hw->max_rate_tries = 18; /* 9 rates * 2 retries/rate */
- for (i = 0; i < 2; i++) {
- if (ieee80211_register_hwmode(hw, &mac->modes[i])) {
- dev_dbg_f(&intf->dev, "cannot register hwmode\n");
- ieee80211_free_hw(hw);
- return NULL;
- }
- }
+ skb_queue_head_init(&mac->ack_wait_queue);
+ mac->ack_pending = 0;
zd_chip_init(&mac->chip, hw, intf);
housekeeping_init(mac);
INIT_WORK(&mac->set_multicast_hash_work, set_multicast_hash_handler);
INIT_WORK(&mac->set_rts_cts_work, set_rts_cts_work);
INIT_WORK(&mac->set_rx_filter_work, set_rx_filter_handler);
+ INIT_WORK(&mac->process_intr, zd_process_intr);
SET_IEEE80211_DEV(hw, &intf->dev);
return hw;
spin_unlock_irq(&mac->lock);
r = zd_chip_control_leds(chip,
- is_associated ? LED_ASSOCIATED : LED_SCANNING);
+ is_associated ? ZD_LED_ASSOCIATED : ZD_LED_SCANNING);
if (r)
dev_dbg_f(zd_mac_dev(mac), "zd_chip_control_leds error %d\n", r);
dev_dbg_f(zd_mac_dev(mac), "\n");
cancel_rearming_delayed_workqueue(zd_workqueue,
&mac->housekeeping.link_led_work);
- zd_chip_control_leds(&mac->chip, LED_OFF);
+ zd_chip_control_leds(&mac->chip, ZD_LED_OFF);
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff