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rt2x00: Add support for retry rates
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>
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@ -220,7 +220,8 @@ void rt2x00lib_txdone(struct queue_entry *entry,
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struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
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enum data_queue_qid qid = skb_get_queue_mapping(entry->skb);
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unsigned int header_length = ieee80211_get_hdrlen_from_skb(entry->skb);
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u8 rate_idx, rate_flags;
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u8 rate_idx, rate_flags, retry_rates;
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unsigned int i;
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/*
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* Unmap the skb.
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@ -259,16 +260,27 @@ void rt2x00lib_txdone(struct queue_entry *entry,
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rate_idx = skbdesc->tx_rate_idx;
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rate_flags = skbdesc->tx_rate_flags;
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retry_rates = test_bit(TXDONE_FALLBACK, &txdesc->flags) ?
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(txdesc->retry + 1) : 1;
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/*
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* Initialize TX status
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*/
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memset(&tx_info->status, 0, sizeof(tx_info->status));
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tx_info->status.ack_signal = 0;
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tx_info->status.rates[0].idx = rate_idx;
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tx_info->status.rates[0].flags = rate_flags;
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tx_info->status.rates[0].count = txdesc->retry + 1;
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tx_info->status.rates[1].idx = -1; /* terminate */
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/*
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* Frame was send with retries, hardware tried
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* different rates to send out the frame, at each
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* retry it lowered the rate 1 step.
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*/
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for (i = 0; i < retry_rates && i < IEEE80211_TX_MAX_RATES; i++) {
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tx_info->status.rates[i].idx = rate_idx - i;
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tx_info->status.rates[i].flags = rate_flags;
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tx_info->status.rates[i].count = 1;
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}
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if (i < (IEEE80211_TX_MAX_RATES -1))
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tx_info->status.rates[i].idx = -1; /* terminate */
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if (!(tx_info->flags & IEEE80211_TX_CTL_NO_ACK)) {
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if (test_bit(TXDONE_SUCCESS, &txdesc->flags) ||
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@ -214,6 +214,7 @@ struct rxdone_entry_desc {
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*
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* @TXDONE_UNKNOWN: Hardware could not determine success of transmission.
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* @TXDONE_SUCCESS: Frame was successfully send
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* @TXDONE_FALLBACK: Frame was successfully send using a fallback rate.
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* @TXDONE_FAILURE: Frame was not successfully send
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* @TXDONE_EXCESSIVE_RETRY: In addition to &TXDONE_FAILURE, the
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* frame transmission failed due to excessive retries.
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@ -221,6 +222,7 @@ struct rxdone_entry_desc {
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enum txdone_entry_desc_flags {
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TXDONE_UNKNOWN,
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TXDONE_SUCCESS,
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TXDONE_FALLBACK,
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TXDONE_FAILURE,
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TXDONE_EXCESSIVE_RETRY,
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};
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