/*
* Firmware I/O code for mac80211 Prism54 drivers
*
* Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
* Copyright (c) 2007-2009, Christian Lamparter <chunkeey@web.de>
* Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
*
* Based on:
* - the islsm (softmac prism54) driver, which is:
* Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al.
* - stlc45xx driver
* Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/firmware.h>
#include <linux/etherdevice.h>
#include <net/mac80211.h>
#include "p54.h"
#include "eeprom.h"
#include "lmac.h"
int p54_parse_firmware(struct ieee80211_hw *dev, const struct firmware *fw)
{
struct p54_common *priv = dev->priv;
struct exp_if *exp_if;
struct bootrec *bootrec;
u32 *data = (u32 *)fw->data;
u32 *end_data = (u32 *)fw->data + (fw->size >> 2);
u8 *fw_version = NULL;
size_t len;
int i;
int maxlen;
if (priv->rx_start)
return 0;
while (data < end_data && *data)
data++;
while (data < end_data && !*data)
data++;
bootrec = (struct bootrec *) data;
while (bootrec->data <= end_data && (bootrec->data +
(len = le32_to_cpu(bootrec->len))) <= end_data) {
u32 code = le32_to_cpu(bootrec->code);
switch (code) {
case BR_CODE_COMPONENT_ID:
priv->fw_interface = be32_to_cpup((__be32 *)
bootrec->data);
switch (priv->fw_interface) {
case FW_LM86:
case FW_LM20:
case FW_LM87: {
char *iftype = (char *)bootrec->data;
printk(KERN_INFO "%s: p54 detected a LM%c%c "
"firmware\n",
wiphy_name(priv->hw->wiphy),
iftype[2], iftype[3]);
break;
}
case FW_FMAC:
default:
printk(KERN_ERR "%s: unsupported firmware\n",
wiphy_name(priv->hw->wiphy));
return -ENODEV;
}
break;
case BR_CODE_COMPONENT_VERSION:
/* 24 bytes should be enough for all firmwares */
if (strnlen((unsigned char *) bootrec->data, 24) < 24)
fw_version = (unsigned char *) bootrec->data;
break;
case BR_CODE_DESCR: {
struct bootrec_desc *desc =
(struct bootrec_desc *)bootrec->data;
priv->rx_start = le32_to_cpu(desc->rx_start);
/* FIXME add sanity checking */
priv->rx_end = le32_to_cpu(desc->rx_end) - 0x3500;
priv->headroom = desc->headroom;
priv->tailroom = desc->tailroom;
priv->privacy_caps = desc->privacy_caps;
priv->rx_keycache_size = desc->rx_keycache_size;
if (le32_to_cpu(bootrec->len) == 11)
priv->rx_mtu = le16_to_cpu(desc->rx_mtu);
else
priv->rx_mtu = (size_t)
0x620 - priv->tx_hdr_len;
maxlen = priv->tx_hdr_len + /* USB devices */
sizeof(struct p54_rx_data) +
4 + /* rx alignment */
IEEE80211_MAX_FRAG_THRESHOLD;
if (priv->rx_mtu > maxlen && PAGE_SIZE == 4096) {
printk(KERN_INFO "p54: rx_mtu reduced from %d "
"to %d\n", priv->rx_mtu, maxlen);
priv->rx_mtu = maxlen;
}
break;
}
case BR_CODE_EXPOSED_IF:
exp_if = (struct exp_if *) bootrec->data;
for (i = 0; i < (len * sizeof(*exp_if) / 4); i++)
if (exp_if[i].if_id == cpu_to_le16(IF_ID_LMAC))
priv->fw_var = le16_to_cpu(exp_if[i].variant);
break;
case BR_CODE_DEPENDENT_IF:
break;
case BR_CODE_END_OF_BRA:
case LEGACY_BR_CODE_END_OF_BRA:
end_data = NULL;
break;
default:
break;
}
bootrec = (struct bootrec *)&bootrec->data[len];
}
if (fw_version)
printk(KERN_INFO "%s: FW rev %s - Softmac protocol %x.%x\n",
wiphy_name(priv->hw->wiphy), fw_version,
priv->fw_var >> 8, priv->fw_var & 0xff);
if (priv->fw_var < 0x500)
printk(KERN_INFO "%s: you are using an obsolete firmware. "
"visit http://wireless.kernel.org/en/users/Drivers/p54 "
"and grab one for \"kernel >= 2.6.28\"!\n",
wiphy_name(priv->hw->wiphy));
if (priv->fw_var >= 0x300) {
/* Firmware supports QoS, use it! */
if (priv->fw_var >= 0x500) {
priv->tx_stats[P54_QUEUE_AC_VO].limit = 16;
priv->tx_stats[P54_QUEUE_AC_VI].limit = 16;
priv->tx_stats[P54_QUEUE_AC_BE].limit = 16;
priv->tx_stats[P54_QUEUE_AC_BK].limit = 16;
} else {
priv->tx_stats[P54_QUEUE_AC_VO].limit = 3;
priv->tx_stats[P54_QUEUE_AC_VI].limit = 4;
priv->tx_stats[P54_QUEUE_AC_BE].limit = 3;
priv->tx_stats[P54_QUEUE_AC_BK].limit = 2;
}
priv->hw->queues = P54_QUEUE_AC_NUM;
}
printk(KERN_INFO "%s: cryptographic accelerator "
"WEP:%s, TKIP:%s, CCMP:%s\n", wiphy_name(priv->hw->wiphy),
(priv->privacy_caps & BR_DESC_PRIV_CAP_WEP) ? "YES" :
"no", (priv->privacy_caps & (BR_DESC_PRIV_CAP_TKIP |
BR_DESC_PRIV_CAP_MICHAEL)) ? "YES" : "no",
(priv->privacy_caps & BR_DESC_PRIV_CAP_AESCCMP) ?
"YES" : "no");
if (priv->rx_keycache_size) {
/*
* NOTE:
*
* The firmware provides at most 255 (0 - 254) slots
* for keys which are then used to offload decryption.
* As a result the 255 entry (aka 0xff) can be used
* safely by the driver to mark keys that didn't fit
* into the full cache. This trick saves us from
* keeping a extra list for uploaded keys.
*/
priv->used_rxkeys = kzalloc(BITS_TO_LONGS(
priv->rx_keycache_size), GFP_KERNEL);
if (!priv->used_rxkeys)
return -ENOMEM;
}
return 0;
}
EXPORT_SYMBOL_GPL(p54_parse_firmware);
static struct sk_buff *p54_alloc_skb(struct p54_common *priv, u16 hdr_flags,
u16 payload_len, u16 type, gfp_t memflags)
{
struct p54_hdr *hdr;
struct sk_buff *skb;
size_t frame_len = sizeof(*hdr) + payload_len;
if (frame_len > P54_MAX_CTRL_FRAME_LEN)
return NULL;
if (unlikely(skb_queue_len(&priv->tx_pending) > 64))
return NULL;
skb = __dev_alloc_skb(priv->tx_hdr_len + frame_len, memflags);
if (!skb)
return NULL;
skb_reserve(skb, priv->tx_hdr_len);
hdr = (struct p54_hdr *) skb_put(skb, sizeof(*hdr));
hdr->flags = cpu_to_le16(hdr_flags);
hdr->len = cpu_to_le16(payload_len);
hdr->type = cpu_to_le16(type);
hdr->tries = hdr->rts_tries = 0;
return skb;
}
int p54_download_eeprom(struct p54_common *priv, void *buf,
u16 offset, u16 len)
{
struct p54_eeprom_lm86 *eeprom_hdr;
struct sk_buff *skb;
size_t eeprom_hdr_size;
int ret = 0;
if (priv->fw_var >= 0x509)
eeprom_hdr_size = sizeof(*eeprom_hdr);
else
eeprom_hdr_size = 0x4;
skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL, eeprom_hdr_size +
len, P54_CONTROL_TYPE_EEPROM_READBACK,
GFP_KERNEL);
if (unlikely(!skb))
return -ENOMEM;
mutex_lock(&priv->eeprom_mutex);
priv->eeprom = buf;
eeprom_hdr = (struct p54_eeprom_lm86 *) skb_put(skb,
eeprom_hdr_size + len);
if (priv->fw_var < 0x509) {
eeprom_hdr->v1.offset = cpu_to_le16(offset);
eeprom_hdr->v1.len = cpu_to_le16(len);
} else {
eeprom_hdr->v2.offset = cpu_to_le32(offset);
eeprom_hdr->v2.len = cpu_to_le16(len);
eeprom_hdr->v2.magic2 = 0xf;
memcpy(eeprom_hdr->v2.magic, (const char *)"LOCK", 4);
}
p54_tx(priv, skb);
if (!wait_for_completion_interruptible_timeout(
&priv->eeprom_comp, HZ)) {
printk(KERN_ERR "%s: device does not respond!\n",
wiphy_name(priv->hw->wiphy));
ret = -EBUSY;
}
priv->eeprom = NULL;
mutex_unlock(&priv->eeprom_mutex);
return ret;
}
int p54_update_beacon_tim(struct p54_common *priv, u16 aid, bool set)
{
struct sk_buff *skb;
struct p54_tim *tim;
skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*tim),
P54_CONTROL_TYPE_TIM, GFP_ATOMIC);
if (unlikely(!skb))
return -ENOMEM;
tim = (struct p54_tim *) skb_put(skb, sizeof(*tim));
tim->count = 1;
tim->entry[0] = cpu_to_le16(set ? (aid | 0x8000) : aid);
p54_tx(priv, skb);
return 0;
}
int p54_sta_unlock(struct p54_common *priv, u8 *addr)
{
struct sk_buff *skb;
struct p54_sta_unlock *sta;
skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*sta),
P54_CONTROL_TYPE_PSM_STA_UNLOCK, GFP_ATOMIC);
if (unlikely(!skb))
return -ENOMEM;
sta = (struct p54_sta_unlock *)skb_put(skb, sizeof(*sta));
memcpy(sta->addr, addr, ETH_ALEN);
p54_tx(priv, skb);
return 0;
}
int p54_tx_cancel(struct p54_common *priv, __le32 req_id)
{
struct sk_buff *skb;
struct p54_txcancel *cancel;
u32 _req_id = le32_to_cpu(req_id);
if (unlikely(_req_id < priv->rx_start || _req_id > priv->rx_end))
return -EINVAL;
skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*cancel),
P54_CONTROL_TYPE_TXCANCEL, GFP_ATOMIC);
if (unlikely(!skb))
return -ENOMEM;
cancel = (struct p54_txcancel *)skb_put(skb, sizeof(*cancel));
cancel->req_id = req_id;
p54_tx(priv, skb);
return 0;
}
int p54_setup_mac(struct p54_common *priv)
{
struct sk_buff *skb;
struct p54_setup_mac *setup;
u16 mode;
skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*setup),
P54_CONTROL_TYPE_SETUP, GFP_ATOMIC);
if (!skb)
return -ENOMEM;
setup = (struct p54_setup_mac *) skb_put(skb, sizeof(*setup));
if (!(priv->hw->conf.flags & IEEE80211_CONF_IDLE)) {
switch (priv->mode) {
case NL80211_IFTYPE_STATION:
mode = P54_FILTER_TYPE_STATION;
break;
case NL80211_IFTYPE_AP:
mode = P54_FILTER_TYPE_AP;
break;
case NL80211_IFTYPE_ADHOC:
case NL80211_IFTYPE_MESH_POINT:
mode = P54_FILTER_TYPE_IBSS;
break;
case NL80211_IFTYPE_MONITOR:
mode = P54_FILTER_TYPE_PROMISCUOUS;
break;
default:
mode = P54_FILTER_TYPE_HIBERNATE;
break;
}
/*
* "TRANSPARENT and PROMISCUOUS are mutually exclusive"
* STSW45X0C LMAC API - page 12
*/
if (((priv->filter_flags & FIF_PROMISC_IN_BSS) ||
(priv->filter_flags & FIF_OTHER_BSS)) &&
(mode != P54_FILTER_TYPE_PROMISCUOUS))
mode |= P54_FILTER_TYPE_TRANSPARENT;
} else {
mode = P54_FILTER_TYPE_HIBERNATE;
}
setup->mac_mode = cpu_to_le16(mode);
memcpy(setup->mac_addr, priv->mac_addr, ETH_ALEN);
memcpy(setup->bssid, priv->bssid, ETH_ALEN);
setup->rx_antenna = 2 & priv->rx_diversity_mask; /* automatic */
setup->rx_align = 0;
if (priv->fw_var < 0x500) {
setup->v1.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
memset(setup->v1.rts_rates, 0, 8);
setup->v1.rx_addr = cpu_to_le32(priv->rx_end);
setup->v1.max_rx = cpu_to_le16(priv->rx_mtu);
setup->v1.rxhw = cpu_to_le16(priv->rxhw);
setup->v1.wakeup_timer = cpu_to_le16(priv->wakeup_timer);
setup->v1.unalloc0 = cpu_to_le16(0);
} else {
setup->v2.rx_addr = cpu_to_le32(priv->rx_end);
setup->v2.max_rx = cpu_to_le16(priv->rx_mtu);
setup->v2.rxhw = cpu_to_le16(priv->rxhw);
setup->v2.timer = cpu_to_le16(priv->wakeup_timer);
setup->v2.truncate = cpu_to_le16(48896);
setup->v2.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
setup->v2.sbss_offset = 0;
setup->v2.mcast_window = 0;
setup->v2.rx_rssi_threshold = 0;
setup->v2.rx_ed_threshold = 0;
setup->v2.ref_clock = cpu_to_le32(644245094);
setup->v2.lpf_bandwidth = cpu_to_le16(65535);
setup->v2.osc_start_delay = cpu_to_le16(65535);
}
p54_tx(priv, skb);
return 0;
}
int p54_scan(struct p54_common *priv, u16 mode, u16 dwell)
{
struct sk_buff *skb;
struct p54_hdr *hdr;
struct p54_scan_head *head;
struct p54_iq_autocal_entry *iq_autocal;
union p54_scan_body_union *body;
struct p54_scan_tail_rate *rate;
struct pda_rssi_cal_entry *rssi;
unsigned int i;
void *entry;
int band = priv->hw->conf.channel->band;
__le16 freq = cpu_to_le16(priv->hw->conf.channel->center_freq);
skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*head) +
2 + sizeof(*iq_autocal) + sizeof(*body) +
sizeof(*rate) + 2 * sizeof(*rssi),
P54_CONTROL_TYPE_SCAN, GFP_ATOMIC);
if (!skb)
return -ENOMEM;
head = (struct p54_scan_head *) skb_put(skb, sizeof(*head));
memset(head->scan_params, 0, sizeof(head->scan_params));
head->mode = cpu_to_le16(mode);
head->dwell = cpu_to_le16(dwell);
head->freq = freq;
if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
__le16 *pa_power_points = (__le16 *) skb_put(skb, 2);
*pa_power_points = cpu_to_le16(0x0c);
}
iq_autocal = (void *) skb_put(skb, sizeof(*iq_autocal));
for (i = 0; i < priv->iq_autocal_len; i++) {
if (priv->iq_autocal[i].freq != freq)
continue;
memcpy(iq_autocal, &priv->iq_autocal[i].params,
sizeof(struct p54_iq_autocal_entry));
break;
}
if (i == priv->iq_autocal_len)
goto err;
if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW)
body = (void *) skb_put(skb, sizeof(body->longbow));
else
body = (void *) skb_put(skb, sizeof(body->normal));
for (i = 0; i < priv->output_limit->entries; i++) {
__le16 *entry_freq = (void *) (priv->output_limit->data +
priv->output_limit->entry_size * i);
if (*entry_freq != freq)
continue;
if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
memcpy(&body->longbow.power_limits,
(void *) entry_freq + sizeof(__le16),
priv->output_limit->entry_size);
} else {
struct pda_channel_output_limit *limits =
(void *) entry_freq;
body->normal.val_barker = 0x38;
body->normal.val_bpsk = body->normal.dup_bpsk =
limits->val_bpsk;
body->normal.val_qpsk = body->normal.dup_qpsk =
limits->val_qpsk;
body->normal.val_16qam = body->normal.dup_16qam =
limits->val_16qam;
body->normal.val_64qam = body->normal.dup_64qam =
limits->val_64qam;
}
break;
}
if (i == priv->output_limit->entries)
goto err;
entry = (void *)(priv->curve_data->data + priv->curve_data->offset);
for (i = 0; i < priv->curve_data->entries; i++) {
if (*((__le16 *)entry) != freq) {
entry += priv->curve_data->entry_size;
continue;
}
if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
memcpy(&body->longbow.curve_data,
(void *) entry + sizeof(__le16),
priv->curve_data->entry_size);
} else {
struct p54_scan_body *chan = &body->normal;
struct pda_pa_curve_data *curve_data =
(void *) priv->curve_data->data;
entry += sizeof(__le16);
chan->pa_points_per_curve = 8;
memset(chan->curve_data, 0, sizeof(*chan->curve_data));
memcpy(chan->curve_data, entry,
sizeof(struct p54_pa_curve_data_sample) *
min((u8)8, curve_data->points_per_channel));
}
break;
}
if (i == priv->curve_data->entries)
goto err;
if ((priv->fw_var >= 0x500) && (priv->fw_var < 0x509)) {
rate = (void *) skb_put(skb, sizeof(*rate));
rate->basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
for (i = 0; i < sizeof(rate->rts_rates); i++)
rate->rts_rates[i] = i;
}
rssi = (struct pda_rssi_cal_entry *) skb_put(skb, sizeof(*rssi));
rssi->mul = cpu_to_le16(priv->rssical_db[band].mul);
rssi->add = cpu_to_le16(priv->rssical_db[band].add);
if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
/* Longbow frontend needs ever more */
rssi = (void *) skb_put(skb, sizeof(*rssi));
rssi->mul = cpu_to_le16(priv->rssical_db[band].longbow_unkn);
rssi->add = cpu_to_le16(priv->rssical_db[band].longbow_unk2);
}
if (priv->fw_var >= 0x509) {
rate = (void *) skb_put(skb, sizeof(*rate));
rate->basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
for (i = 0; i < sizeof(rate->rts_rates); i++)
rate->rts_rates[i] = i;
}
hdr = (struct p54_hdr *) skb->data;
hdr->len = cpu_to_le16(skb->len - sizeof(*hdr));
p54_tx(priv, skb);
return 0;
err:
printk(KERN_ERR "%s: frequency change to channel %d failed.\n",
wiphy_name(priv->hw->wiphy), ieee80211_frequency_to_channel(
priv->hw->conf.channel->center_freq));
dev_kfree_skb_any(skb);
return -EINVAL;
}
int p54_set_leds(struct p54_common *priv)
{
struct sk_buff *skb;
struct p54_led *led;
skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*led),
P54_CONTROL_TYPE_LED, GFP_ATOMIC);
if (unlikely(!skb))
return -ENOMEM;
led = (struct p54_led *) skb_put(skb, sizeof(*led));
led->flags = cpu_to_le16(0x0003);
led->mask[0] = led->mask[1] = cpu_to_le16(priv->softled_state);
led->delay[0] = cpu_to_le16(1);
led->delay[1] = cpu_to_le16(0);
p54_tx(priv, skb);
return 0;
}
int p54_set_edcf(struct p54_common *priv)
{
struct sk_buff *skb;
struct p54_edcf *edcf;
skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*edcf),
P54_CONTROL_TYPE_DCFINIT, GFP_ATOMIC);
if (unlikely(!skb))
return -ENOMEM;
edcf = (struct p54_edcf *)skb_put(skb, sizeof(*edcf));
if (priv->use_short_slot) {
edcf->slottime = 9;
edcf->sifs = 0x10;
edcf->eofpad = 0x00;
} else {
edcf->slottime = 20;
edcf->sifs = 0x0a;
edcf->eofpad = 0x06;
}
/* (see prism54/isl_oid.h for further details) */
edcf->frameburst = cpu_to_le16(0);
edcf->round_trip_delay = cpu_to_le16(0);
edcf->flags = 0;
memset(edcf->mapping, 0, sizeof(edcf->mapping));
memcpy(edcf->queue, priv->qos_params, sizeof(edcf->queue));
p54_tx(priv, skb);
return 0;
}
int p54_set_ps(struct p54_common *priv)
{
struct sk_buff *skb;
struct p54_psm *psm;
unsigned int i;
u16 mode;
if (priv->hw->conf.flags & IEEE80211_CONF_PS &&
!priv->powersave_override)
mode = P54_PSM | P54_PSM_BEACON_TIMEOUT | P54_PSM_DTIM |
P54_PSM_CHECKSUM | P54_PSM_MCBC;
else
mode = P54_PSM_CAM;
skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*psm),
P54_CONTROL_TYPE_PSM, GFP_ATOMIC);
if (!skb)
return -ENOMEM;
psm = (struct p54_psm *)skb_put(skb, sizeof(*psm));
psm->mode = cpu_to_le16(mode);
psm->aid = cpu_to_le16(priv->aid);
for (i = 0; i < ARRAY_SIZE(psm->intervals); i++) {
psm->intervals[i].interval =
cpu_to_le16(priv->hw->conf.listen_interval);
psm->intervals[i].periods = cpu_to_le16(1);
}
psm->beacon_rssi_skip_max = 200;
psm->rssi_delta_threshold = 0;
psm->nr = 1;
psm->exclude[0] = WLAN_EID_TIM;
p54_tx(priv, skb);
return 0;
}
int p54_init_xbow_synth(struct p54_common *priv)
{
struct sk_buff *skb;
struct p54_xbow_synth *xbow;
skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*xbow),
P54_CONTROL_TYPE_XBOW_SYNTH_CFG, GFP_KERNEL);
if (unlikely(!skb))
return -ENOMEM;
xbow = (struct p54_xbow_synth *)skb_put(skb, sizeof(*xbow));
xbow->magic1 = cpu_to_le16(0x1);
xbow->magic2 = cpu_to_le16(0x2);
xbow->freq = cpu_to_le16(5390);
memset(xbow->padding, 0, sizeof(xbow->padding));
p54_tx(priv, skb);
return 0;
}
int p54_upload_key(struct p54_common *priv, u8 algo, int slot, u8 idx, u8 len,
u8 *addr, u8* key)
{
struct sk_buff *skb;
struct p54_keycache *rxkey;
skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*rxkey),
P54_CONTROL_TYPE_RX_KEYCACHE, GFP_KERNEL);
if (unlikely(!skb))
return -ENOMEM;
rxkey = (struct p54_keycache *)skb_put(skb, sizeof(*rxkey));
rxkey->entry = slot;
rxkey->key_id = idx;
rxkey->key_type = algo;
if (addr)
memcpy(rxkey->mac, addr, ETH_ALEN);
else
memset(rxkey->mac, ~0, ETH_ALEN);
switch (algo) {
case P54_CRYPTO_WEP:
case P54_CRYPTO_AESCCMP:
rxkey->key_len = min_t(u8, 16, len);
memcpy(rxkey->key, key, rxkey->key_len);
break;
case P54_CRYPTO_TKIPMICHAEL:
rxkey->key_len = 24;
memcpy(rxkey->key, key, 16);
memcpy(&(rxkey->key[16]), &(key
[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY]), 8);
break;
case P54_CRYPTO_NONE:
rxkey->key_len = 0;
memset(rxkey->key, 0, sizeof(rxkey->key));
break;
default:
printk(KERN_ERR "%s: invalid cryptographic algorithm: %d\n",
wiphy_name(priv->hw->wiphy), algo);
dev_kfree_skb(skb);
return -EINVAL;
}
p54_tx(priv, skb);
return 0;
}
int p54_fetch_statistics(struct p54_common *priv)
{
struct ieee80211_tx_info *txinfo;
struct p54_tx_info *p54info;
struct sk_buff *skb;
skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL,
sizeof(struct p54_statistics),
P54_CONTROL_TYPE_STAT_READBACK, GFP_KERNEL);
if (!skb)
return -ENOMEM;
/*
* The statistic feedback causes some extra headaches here, if it
* is not to crash/corrupt the firmware data structures.
*
* Unlike all other Control Get OIDs we can not use helpers like
* skb_put to reserve the space for the data we're requesting.
* Instead the extra frame length -which will hold the results later-
* will only be told to the p54_assign_address, so that following
* frames won't be placed into the allegedly empty area.
*/
txinfo = IEEE80211_SKB_CB(skb);
p54info = (void *) txinfo->rate_driver_data;
p54info->extra_len = sizeof(struct p54_statistics);
p54_tx(priv, skb);
return 0;
}
