diff options
| author | Felix Fietkau <nbd@openwrt.org> | 2008-10-05 18:04:24 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2008-10-06 18:14:57 -0400 |
| commit | 870abdf67170daa9f1022e55a35c469239fcc74c (patch) | |
| tree | 5ca00db880d71149eea2cdaeb67ed20f5281071d /include/net | |
| parent | 76708dee382a69b2f9d0e50f413f99fefb2dc509 (diff) | |
| download | kernel-common-870abdf67170daa9f1022e55a35c469239fcc74c.tar.gz kernel-common-870abdf67170daa9f1022e55a35c469239fcc74c.tar.bz2 kernel-common-870abdf67170daa9f1022e55a35c469239fcc74c.zip | |
mac80211: add multi-rate retry support
This patch adjusts the rate control API to allow multi-rate retry
if supported by the driver. The ieee80211_hw struct specifies how
many alternate rate selections the driver supports.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/mac80211.h | 29 |
1 files changed, 25 insertions, 4 deletions
diff --git a/include/net/mac80211.h b/include/net/mac80211.h index feb3be81dfa6..5617a1613c91 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -292,6 +292,20 @@ enum mac80211_tx_control_flags { #define IEEE80211_TX_INFO_DRIVER_DATA_PTRS \ (IEEE80211_TX_INFO_DRIVER_DATA_SIZE / sizeof(void *)) +/* maximum number of alternate rate retry stages */ +#define IEEE80211_TX_MAX_ALTRATE 3 + +/** + * struct ieee80211_tx_altrate - alternate rate selection/status + * + * @rate_idx: rate index to attempt to send with + * @limit: number of retries before fallback + */ +struct ieee80211_tx_altrate { + s8 rate_idx; + u8 limit; +}; + /** * struct ieee80211_tx_info - skb transmit information * @@ -335,12 +349,14 @@ struct ieee80211_tx_info { struct ieee80211_key_conf *hw_key; struct ieee80211_sta *sta; unsigned long jiffies; - s8 rts_cts_rate_idx, alt_retry_rate_idx; + s8 rts_cts_rate_idx; u8 retry_limit; + struct ieee80211_tx_altrate retries[IEEE80211_TX_MAX_ALTRATE]; } control; struct { u64 ampdu_ack_map; int ack_signal; + struct ieee80211_tx_altrate retries[IEEE80211_TX_MAX_ALTRATE + 1]; u8 retry_count; bool excessive_retries; u8 ampdu_ack_len; @@ -828,6 +844,9 @@ enum ieee80211_hw_flags { * within &struct ieee80211_vif. * @sta_data_size: size (in bytes) of the drv_priv data area * within &struct ieee80211_sta. + * + * @max_altrates: maximum number of alternate rate retry stages + * @max_altrate_tries: maximum number of tries for each stage */ struct ieee80211_hw { struct ieee80211_conf conf; @@ -844,6 +863,8 @@ struct ieee80211_hw { u16 ampdu_queues; u16 max_listen_interval; s8 max_signal; + u8 max_altrates; + u8 max_altrate_tries; }; struct ieee80211_hw *wiphy_to_hw(struct wiphy *wiphy); @@ -900,11 +921,11 @@ ieee80211_get_rts_cts_rate(const struct ieee80211_hw *hw, static inline struct ieee80211_rate * ieee80211_get_alt_retry_rate(const struct ieee80211_hw *hw, - const struct ieee80211_tx_info *c) + const struct ieee80211_tx_info *c, int idx) { - if (c->control.alt_retry_rate_idx < 0) + if (c->control.retries[idx].rate_idx < 0) return NULL; - return &hw->wiphy->bands[c->band]->bitrates[c->control.alt_retry_rate_idx]; + return &hw->wiphy->bands[c->band]->bitrates[c->control.retries[idx].rate_idx]; } /** |