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rt2x00: txdone implementation supporting hw encryption. 

This is an implementation that support WCID being the encryption key.
Wireless Cli Id was set to be the encryption key in rt2800pci_write_tx_desc
and read (TX_STA_FIFO_WCID) as the current queue entry index.

Signed-off-by: Benoit Papillault <benoit.papillault@free.fr>
Signed-off-by: Alban Browaeys <prahal@yahoo.com>
Acked-by: Ivo van Doorn <ivdoorn@gmail.com>
Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Alban Browaeys 2010-02-26 23:19:59 +01:00 committed by John W. Linville
parent d6e36ec1d0
commit 632dd959d1
1 changed files with 23 additions and 30 deletions
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53
drivers/net/wireless/rt2x00/rt2800pci.c
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@ -907,14 +907,12 @@ static void rt2800pci_txdone(struct rt2x00_dev *rt2x00dev)
{
struct data_queue *queue;
struct queue_entry *entry;
struct queue_entry *entry_done;
struct queue_entry_priv_pci *entry_priv;
__le32 *txwi;
struct txdone_entry_desc txdesc;
u32 word;
u32 reg;
u32 old_reg;
unsigned int type;
unsigned int index;
int wcid, ack, pid, tx_wcid, tx_ack, tx_pid;
u16 mcs, real_mcs;
/*
@ -936,47 +934,41 @@ static void rt2800pci_txdone(struct rt2x00_dev *rt2x00dev)
break;
old_reg = reg;
wcid = rt2x00_get_field32(reg, TX_STA_FIFO_WCID);
ack = rt2x00_get_field32(reg, TX_STA_FIFO_TX_ACK_REQUIRED);
pid = rt2x00_get_field32(reg, TX_STA_FIFO_PID_TYPE);
/*
* Skip this entry when it contains an invalid
* queue identication number.
*/
type = rt2x00_get_field32(reg, TX_STA_FIFO_PID_TYPE) - 1;
if (type >= QID_RX)
if (pid <= 0 || pid > QID_RX)
continue;
queue = rt2x00queue_get_queue(rt2x00dev, type);
queue = rt2x00queue_get_queue(rt2x00dev, pid - 1);
if (unlikely(!queue))
continue;
/*
* Skip this entry when it contains an invalid
* index number.
* Inside each queue, we process each entry in a chronological
* order. We first check that the queue is not empty.
*/
index = rt2x00_get_field32(reg, TX_STA_FIFO_WCID) - 1;
if (unlikely(index >= queue->limit))
if (rt2x00queue_empty(queue))
continue;
entry = rt2x00queue_get_entry(queue, Q_INDEX_DONE);
entry = &queue->entries[index];
entry_priv = entry->priv_data;
rt2x00_desc_read((__le32 *)entry->skb->data, 0, &word);
/* Check if we got a match by looking at WCID/ACK/PID
* fields */
txwi = (__le32 *)(entry->skb->data -
rt2x00dev->ops->extra_tx_headroom);
entry_done = rt2x00queue_get_entry(queue, Q_INDEX_DONE);
while (entry != entry_done) {
/*
* Catch up.
* Just report any entries we missed as failed.
*/
WARNING(rt2x00dev,
"TX status report missed for entry %d\n",
entry_done->entry_idx);
rt2x00_desc_read(txwi, 1, &word);
tx_wcid = rt2x00_get_field32(word, TXWI_W1_WIRELESS_CLI_ID);
tx_ack = rt2x00_get_field32(word, TXWI_W1_ACK);
tx_pid = rt2x00_get_field32(word, TXWI_W1_PACKETID);
txdesc.flags = 0;
__set_bit(TXDONE_UNKNOWN, &txdesc.flags);
txdesc.retry = 0;
rt2x00lib_txdone(entry_done, &txdesc);
entry_done = rt2x00queue_get_entry(queue, Q_INDEX_DONE);
}
if ((wcid != tx_wcid) || (ack != tx_ack) || (pid != tx_pid))
WARNING(rt2x00dev, "invalid TX_STA_FIFO content\n");
/*
* Obtain the status about this packet.
@ -997,6 +989,7 @@ static void rt2800pci_txdone(struct rt2x00_dev *rt2x00dev)
* we have mcs = tx_mcs - 1. So the number of
* retry is (tx_mcs - mcs).
*/
rt2x00_desc_read(txwi, 0, &word);
mcs = rt2x00_get_field32(word, TXWI_W0_MCS);
real_mcs = rt2x00_get_field32(reg, TX_STA_FIFO_MCS);
__set_bit(TXDONE_FALLBACK, &txdesc.flags);