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path: root/drivers/net/wireless/rt2x00/rt2x00queue.c
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Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2x00queue.c')
-rw-r--r--drivers/net/wireless/rt2x00/rt2x00queue.c94
1 files changed, 31 insertions, 63 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2x00queue.c b/drivers/net/wireless/rt2x00/rt2x00queue.c
index 451d410ecda..eaec6bd93ed 100644
--- a/drivers/net/wireless/rt2x00/rt2x00queue.c
+++ b/drivers/net/wireless/rt2x00/rt2x00queue.c
@@ -55,14 +55,12 @@ struct sk_buff *rt2x00queue_alloc_rxskb(struct rt2x00_dev *rt2x00dev,
/*
* For IV/EIV/ICV assembly we must make sure there is
* at least 8 bytes bytes available in headroom for IV/EIV
- * and 4 bytes for ICV data as tailroon.
+ * and 8 bytes for ICV data as tailroon.
*/
-#ifdef CONFIG_RT2X00_LIB_CRYPTO
if (test_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags)) {
head_size += 8;
- tail_size += 4;
+ tail_size += 8;
}
-#endif /* CONFIG_RT2X00_LIB_CRYPTO */
/*
* Allocate skbuffer.
@@ -174,7 +172,7 @@ static void rt2x00queue_create_tx_descriptor(struct queue_entry *entry,
txdesc->cw_max = entry->queue->cw_max;
txdesc->aifs = entry->queue->aifs;
- /* Data length + CRC + IV/EIV/ICV/MMIC (when using encryption) */
+ /* Data length + CRC */
data_length = entry->skb->len + 4;
/*
@@ -183,34 +181,17 @@ static void rt2x00queue_create_tx_descriptor(struct queue_entry *entry,
if (!(tx_info->flags & IEEE80211_TX_CTL_NO_ACK))
__set_bit(ENTRY_TXD_ACK, &txdesc->flags);
-#ifdef CONFIG_RT2X00_LIB_CRYPTO
if (test_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags) &&
!entry->skb->do_not_encrypt) {
- struct ieee80211_key_conf *hw_key = tx_info->control.hw_key;
-
- __set_bit(ENTRY_TXD_ENCRYPT, &txdesc->flags);
-
- txdesc->cipher = rt2x00crypto_key_to_cipher(hw_key);
-
- if (hw_key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
- __set_bit(ENTRY_TXD_ENCRYPT_PAIRWISE, &txdesc->flags);
-
- txdesc->key_idx = hw_key->hw_key_idx;
- txdesc->iv_offset = ieee80211_get_hdrlen_from_skb(entry->skb);
+ /* Apply crypto specific descriptor information */
+ rt2x00crypto_create_tx_descriptor(entry, txdesc);
/*
* Extend frame length to include all encryption overhead
* that will be added by the hardware.
*/
data_length += rt2x00crypto_tx_overhead(tx_info);
-
- if (!(hw_key->flags & IEEE80211_KEY_FLAG_GENERATE_IV))
- __set_bit(ENTRY_TXD_ENCRYPT_IV, &txdesc->flags);
-
- if (!(hw_key->flags & IEEE80211_KEY_FLAG_GENERATE_MMIC))
- __set_bit(ENTRY_TXD_ENCRYPT_MMIC, &txdesc->flags);
}
-#endif /* CONFIG_RT2X00_LIB_CRYPTO */
/*
* Check if this is a RTS/CTS frame
@@ -230,8 +211,8 @@ static void rt2x00queue_create_tx_descriptor(struct queue_entry *entry,
/*
* Determine retry information.
*/
- txdesc->retry_limit = tx_info->control.retry_limit;
- if (tx_info->flags & IEEE80211_TX_CTL_LONG_RETRY_LIMIT)
+ txdesc->retry_limit = tx_info->control.rates[0].count - 1;
+ if (txdesc->retry_limit >= rt2x00dev->long_retry)
__set_bit(ENTRY_TXD_RETRY_MODE, &txdesc->flags);
/*
@@ -312,8 +293,8 @@ static void rt2x00queue_create_tx_descriptor(struct queue_entry *entry,
/*
* Convert length to microseconds.
*/
- residual = get_duration_res(data_length, hwrate->bitrate);
- duration = get_duration(data_length, hwrate->bitrate);
+ residual = GET_DURATION_RES(data_length, hwrate->bitrate);
+ duration = GET_DURATION(data_length, hwrate->bitrate);
if (residual != 0) {
duration++;
@@ -371,13 +352,15 @@ static void rt2x00queue_write_tx_descriptor(struct queue_entry *entry,
int rt2x00queue_write_tx_frame(struct data_queue *queue, struct sk_buff *skb)
{
+ struct ieee80211_tx_info *tx_info;
struct queue_entry *entry = rt2x00queue_get_entry(queue, Q_INDEX);
struct txentry_desc txdesc;
struct skb_frame_desc *skbdesc;
unsigned int iv_len = 0;
+ u8 rate_idx, rate_flags;
if (unlikely(rt2x00queue_full(queue)))
- return -EINVAL;
+ return -ENOBUFS;
if (test_and_set_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags)) {
ERROR(queue->rt2x00dev,
@@ -399,13 +382,18 @@ int rt2x00queue_write_tx_frame(struct data_queue *queue, struct sk_buff *skb)
iv_len = IEEE80211_SKB_CB(skb)->control.hw_key->iv_len;
/*
- * All information is retreived from the skb->cb array,
+ * All information is retrieved from the skb->cb array,
* now we should claim ownership of the driver part of that
- * array.
+ * array, preserving the bitrate index and flags.
*/
- skbdesc = get_skb_frame_desc(entry->skb);
+ tx_info = IEEE80211_SKB_CB(skb);
+ rate_idx = tx_info->control.rates[0].idx;
+ rate_flags = tx_info->control.rates[0].flags;
+ skbdesc = get_skb_frame_desc(skb);
memset(skbdesc, 0, sizeof(*skbdesc));
skbdesc->entry = entry;
+ skbdesc->tx_rate_idx = rate_idx;
+ skbdesc->tx_rate_flags = rate_flags;
/*
* When hardware encryption is supported, and this frame
@@ -414,19 +402,21 @@ int rt2x00queue_write_tx_frame(struct data_queue *queue, struct sk_buff *skb)
*/
if (test_bit(ENTRY_TXD_ENCRYPT, &txdesc.flags) &&
!test_bit(ENTRY_TXD_ENCRYPT_IV, &txdesc.flags)) {
- rt2x00crypto_tx_remove_iv(skb, iv_len);
+ if (test_bit(CONFIG_CRYPTO_COPY_IV, &queue->rt2x00dev->flags))
+ rt2x00crypto_tx_copy_iv(skb, iv_len);
+ else
+ rt2x00crypto_tx_remove_iv(skb, iv_len);
}
/*
* It could be possible that the queue was corrupted and this
- * call failed. Just drop the frame, we cannot rollback and pass
- * the frame to mac80211 because the skb->cb has now been tainted.
+ * call failed. Since we always return NETDEV_TX_OK to mac80211,
+ * this frame will simply be dropped.
*/
if (unlikely(queue->rt2x00dev->ops->lib->write_tx_data(entry))) {
clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags);
- dev_kfree_skb_any(entry->skb);
entry->skb = NULL;
- return 0;
+ return -EIO;
}
if (test_bit(DRIVER_REQUIRE_DMA, &queue->rt2x00dev->flags))
@@ -556,7 +546,7 @@ void rt2x00queue_index_inc(struct data_queue *queue, enum queue_index index)
queue->length++;
} else if (index == Q_INDEX_DONE) {
queue->length--;
- queue->count ++;
+ queue->count++;
}
spin_unlock_irqrestore(&queue->lock, irqflags);
@@ -575,40 +565,18 @@ static void rt2x00queue_reset(struct data_queue *queue)
spin_unlock_irqrestore(&queue->lock, irqflags);
}
-void rt2x00queue_init_rx(struct rt2x00_dev *rt2x00dev)
-{
- struct data_queue *queue = rt2x00dev->rx;
- unsigned int i;
-
- rt2x00queue_reset(queue);
-
- if (!rt2x00dev->ops->lib->init_rxentry)
- return;
-
- for (i = 0; i < queue->limit; i++) {
- queue->entries[i].flags = 0;
-
- rt2x00dev->ops->lib->init_rxentry(rt2x00dev,
- &queue->entries[i]);
- }
-}
-
-void rt2x00queue_init_tx(struct rt2x00_dev *rt2x00dev)
+void rt2x00queue_init_queues(struct rt2x00_dev *rt2x00dev)
{
struct data_queue *queue;
unsigned int i;
- txall_queue_for_each(rt2x00dev, queue) {
+ queue_for_each(rt2x00dev, queue) {
rt2x00queue_reset(queue);
- if (!rt2x00dev->ops->lib->init_txentry)
- continue;
-
for (i = 0; i < queue->limit; i++) {
queue->entries[i].flags = 0;
- rt2x00dev->ops->lib->init_txentry(rt2x00dev,
- &queue->entries[i]);
+ rt2x00dev->ops->lib->clear_entry(&queue->entries[i]);
}
}
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-28 06:55:03 +0000