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rt2x00: Add support for retry rates

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rt2800pci can handle different retry rates,
it will always step 1 rate down after a failed
transmission so creating the retry rate list
for mac80211 is quite simple.

Signed-off-by: Benoit PAPILLAULT <benoit.papillault@free.fr>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Benoit PAPILLAULT 2009-08-17 18:56:10 +02:00 committed by John W. Linville
parent cd80b684a0
commit 92ed48e523
2 changed files with 19 additions and 5 deletions
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22
drivers/net/wireless/rt2x00/rt2x00dev.c
View File

@ -220,7 +220,8 @@ void rt2x00lib_txdone(struct queue_entry *entry,
struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
enum data_queue_qid qid = skb_get_queue_mapping(entry->skb);
unsigned int header_length = ieee80211_get_hdrlen_from_skb(entry->skb);
u8 rate_idx, rate_flags;
u8 rate_idx, rate_flags, retry_rates;
unsigned int i;
/*
* Unmap the skb.
@ -259,16 +260,27 @@ void rt2x00lib_txdone(struct queue_entry *entry,
rate_idx = skbdesc->tx_rate_idx;
rate_flags = skbdesc->tx_rate_flags;
retry_rates = test_bit(TXDONE_FALLBACK, &txdesc->flags) ?
(txdesc->retry + 1) : 1;
/*
* Initialize TX status
*/
memset(&tx_info->status, 0, sizeof(tx_info->status));
tx_info->status.ack_signal = 0;
tx_info->status.rates[0].idx = rate_idx;
tx_info->status.rates[0].flags = rate_flags;
tx_info->status.rates[0].count = txdesc->retry + 1;
tx_info->status.rates[1].idx = -1; /* terminate */
/*
* Frame was send with retries, hardware tried
* different rates to send out the frame, at each
* retry it lowered the rate 1 step.
*/
for (i = 0; i < retry_rates && i < IEEE80211_TX_MAX_RATES; i++) {
tx_info->status.rates[i].idx = rate_idx - i;
tx_info->status.rates[i].flags = rate_flags;
tx_info->status.rates[i].count = 1;
}
if (i < (IEEE80211_TX_MAX_RATES -1))
tx_info->status.rates[i].idx = -1; /* terminate */
if (!(tx_info->flags & IEEE80211_TX_CTL_NO_ACK)) {
if (test_bit(TXDONE_SUCCESS, &txdesc->flags) ||

2
drivers/net/wireless/rt2x00/rt2x00queue.h
View File

@ -214,6 +214,7 @@ struct rxdone_entry_desc {
*
* @TXDONE_UNKNOWN: Hardware could not determine success of transmission.
* @TXDONE_SUCCESS: Frame was successfully send
* @TXDONE_FALLBACK: Frame was successfully send using a fallback rate.
* @TXDONE_FAILURE: Frame was not successfully send
* @TXDONE_EXCESSIVE_RETRY: In addition to &TXDONE_FAILURE, the
* frame transmission failed due to excessive retries.
@ -221,6 +222,7 @@ struct rxdone_entry_desc {
enum txdone_entry_desc_flags {
TXDONE_UNKNOWN,
TXDONE_SUCCESS,
TXDONE_FALLBACK,
TXDONE_FAILURE,
TXDONE_EXCESSIVE_RETRY,
};