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path: root/drivers/net/wireless/p54/p54common.c
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Diffstat (limited to 'drivers/net/wireless/p54/p54common.c')
-rw-r--r--drivers/net/wireless/p54/p54common.c60
1 files changed, 50 insertions, 10 deletions
diff --git a/drivers/net/wireless/p54/p54common.c b/drivers/net/wireless/p54/p54common.c
index 82354b974a0..34561e6e816 100644
--- a/drivers/net/wireless/p54/p54common.c
+++ b/drivers/net/wireless/p54/p54common.c
@@ -138,6 +138,7 @@ int p54_parse_firmware(struct ieee80211_hw *dev, const struct firmware *fw)
u8 *fw_version = NULL;
size_t len;
int i;
+ int maxlen;
if (priv->rx_start)
return 0;
@@ -195,6 +196,16 @@ int p54_parse_firmware(struct ieee80211_hw *dev, const struct firmware *fw)
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:
@@ -440,8 +451,8 @@ static int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len)
}
if (err)
goto err;
-
- }
+ }
+ break;
case PDR_PRISM_ZIF_TX_IQ_CALIBRATION:
priv->iq_autocal = kmalloc(data_len, GFP_KERNEL);
if (!priv->iq_autocal) {
@@ -575,6 +586,7 @@ static int p54_rx_data(struct ieee80211_hw *dev, struct sk_buff *skb)
u16 freq = le16_to_cpu(hdr->freq);
size_t header_len = sizeof(*hdr);
u32 tsf32;
+ u8 rate = hdr->rate & 0xf;
/*
* If the device is in a unspecified state we have to
@@ -603,8 +615,11 @@ static int p54_rx_data(struct ieee80211_hw *dev, struct sk_buff *skb)
rx_status.qual = (100 * hdr->rssi) / 127;
if (hdr->rate & 0x10)
rx_status.flag |= RX_FLAG_SHORTPRE;
- rx_status.rate_idx = (dev->conf.channel->band == IEEE80211_BAND_2GHZ ?
- hdr->rate : (hdr->rate - 4)) & 0xf;
+ if (dev->conf.channel->band == IEEE80211_BAND_5GHZ)
+ rx_status.rate_idx = (rate < 4) ? 0 : rate - 4;
+ else
+ rx_status.rate_idx = rate;
+
rx_status.freq = freq;
rx_status.band = dev->conf.channel->band;
rx_status.antenna = hdr->antenna;
@@ -730,7 +745,7 @@ static void p54_rx_frame_sent(struct ieee80211_hw *dev, struct sk_buff *skb)
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(entry);
struct p54_hdr *entry_hdr;
struct p54_tx_data *entry_data;
- int pad = 0;
+ unsigned int pad = 0, frame_len;
range = (void *)info->rate_driver_data;
if (range->start_addr != addr) {
@@ -753,6 +768,7 @@ static void p54_rx_frame_sent(struct ieee80211_hw *dev, struct sk_buff *skb)
__skb_unlink(entry, &priv->tx_queue);
spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
+ frame_len = entry->len;
entry_hdr = (struct p54_hdr *) entry->data;
entry_data = (struct p54_tx_data *) entry_hdr->data;
priv->tx_stats[entry_data->hw_queue].len--;
@@ -798,6 +814,29 @@ static void p54_rx_frame_sent(struct ieee80211_hw *dev, struct sk_buff *skb)
info->flags |= IEEE80211_TX_STAT_TX_FILTERED;
info->status.ack_signal = p54_rssi_to_dbm(dev,
(int)payload->ack_rssi);
+
+ /* Undo all changes to the frame. */
+ switch (entry_data->key_type) {
+ case P54_CRYPTO_TKIPMICHAEL: {
+ u8 *iv = (u8 *)(entry_data->align + pad +
+ entry_data->crypt_offset);
+
+ /* Restore the original TKIP IV. */
+ iv[2] = iv[0];
+ iv[0] = iv[1];
+ iv[1] = (iv[0] | 0x20) & 0x7f; /* WEPSeed - 8.3.2.2 */
+
+ frame_len -= 12; /* remove TKIP_MMIC + TKIP_ICV */
+ break;
+ }
+ case P54_CRYPTO_AESCCMP:
+ frame_len -= 8; /* remove CCMP_MIC */
+ break;
+ case P54_CRYPTO_WEP:
+ frame_len -= 4; /* remove WEP_ICV */
+ break;
+ }
+ skb_trim(entry, frame_len);
skb_pull(entry, sizeof(*hdr) + pad + sizeof(*entry_data));
ieee80211_tx_status_irqsafe(dev, entry);
goto out;
@@ -1122,7 +1161,7 @@ static int p54_set_tim(struct ieee80211_hw *dev, struct ieee80211_sta *sta,
skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET,
sizeof(struct p54_hdr) + sizeof(*tim),
- P54_CONTROL_TYPE_TIM, GFP_KERNEL);
+ P54_CONTROL_TYPE_TIM, GFP_ATOMIC);
if (!skb)
return -ENOMEM;
@@ -1383,7 +1422,6 @@ static int p54_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
hdr->tries = ridx;
txhdr->rts_rate_idx = 0;
if (info->control.hw_key) {
- crypt_offset += info->control.hw_key->iv_len;
txhdr->key_type = p54_convert_algo(info->control.hw_key->alg);
txhdr->key_len = min((u8)16, info->control.hw_key->keylen);
memcpy(txhdr->key, info->control.hw_key->key, txhdr->key_len);
@@ -1397,6 +1435,8 @@ static int p54_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
}
/* reserve some space for ICV */
len += info->control.hw_key->icv_len;
+ memset(skb_put(skb, info->control.hw_key->icv_len), 0,
+ info->control.hw_key->icv_len);
} else {
txhdr->key_type = 0;
txhdr->key_len = 0;
@@ -1584,7 +1624,7 @@ static int p54_scan(struct ieee80211_hw *dev, u16 mode, u16 dwell)
err:
printk(KERN_ERR "%s: frequency change failed\n", wiphy_name(dev->wiphy));
- kfree_skb(skb);
+ p54_free_skb(dev, skb);
return -EINVAL;
}
@@ -1824,7 +1864,7 @@ static void p54_remove_interface(struct ieee80211_hw *dev,
static int p54_config(struct ieee80211_hw *dev, u32 changed)
{
- int ret;
+ int ret = 0;
struct p54_common *priv = dev->priv;
struct ieee80211_conf *conf = &dev->conf;
@@ -2051,7 +2091,7 @@ static int p54_set_key(struct ieee80211_hw *dev, enum set_key_cmd cmd,
algo = P54_CRYPTO_AESCCMP;
break;
default:
- return -EINVAL;
+ return -EOPNOTSUPP;
}
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 07:27:12 +0000