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@xxxxxxx>
Signed-off-by: Alban Browaeys <prahal@xxxxxxxxx>
---
drivers/net/wireless/rt2x00/rt2800pci.c | 57 +++++++++++++-----------------
1 files changed, 25 insertions(+), 32 deletions(-)
diff --git a/drivers/net/wireless/rt2x00/rt2800pci.c b/drivers/net/wireless/rt2x00/rt2800pci.c
index 0e4c417..841f973 100644
--- a/drivers/net/wireless/rt2x00/rt2800pci.c
+++ b/drivers/net/wireless/rt2x00/rt2800pci.c
@@ -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 - 1 < 0 || pid - 1 >= 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 (queue->length == 0)
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);
-
- 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);
-
- 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);
- }
+ /* Check if we got a match by looking at WCID/ACK/PID
+ * fields */
+ txwi = (__le32 *)(entry->skb->data -
+ rt2x00dev->ops->extra_tx_headroom);
+
+ 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);
+
+ 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);
--
1.7.0
--
To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
