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iwlwifi: Fix handling of retry count of NO_ACK frames in iwl-{3945|agn}-rs 

Make iwl-{3945|agn}-rs check for IEEE80211_TX_CTL_NO_ACK instead of
is_multicast_ether_addr when determining whether to use the lowest
rate, and set the retry count to 0 (total try count = 1) if
IEEE80211_TX_CTL_NO_ACK is set.

Signed-off-by: Gábor Stefanik <netrolller.3d@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Gábor Stefanik 2009-04-23 19:36:08 +02:00 коммит произвёл John W. Linville
Родитель 922368414e
Коммит 514d65c18e
2 изменённых файлов: 16 добавлений и 13 удалений
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7
drivers/net/wireless/iwlwifi/iwl-3945-rs.c
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@ -683,11 +683,10 @@ static void rs_get_rate(void *priv_r, struct ieee80211_sta *sta,
if (sta)
rate_mask = sta->supp_rates[sband->band];
/* Send management frames and broadcast/multicast data using lowest
* rate. */
/* Send management frames and NO_ACK data using lowest rate. */
fc = le16_to_cpu(hdr->frame_control);
if ((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA ||
is_multicast_ether_addr(hdr->addr1) ||
info->flags & IEEE80211_TX_CTL_NO_ACK ||
!sta || !priv_sta) {
IWL_DEBUG_RATE(priv, "leave: No STA priv data to update!\n");
if (!rate_mask)
@ -696,6 +695,8 @@ static void rs_get_rate(void *priv_r, struct ieee80211_sta *sta,
else
info->control.rates[0].idx =
rate_lowest_index(sband, sta);
if (info->flags & IEEE80211_TX_CTL_NO_ACK)
info->control.rates[0].count = 1;
return;
}

22
drivers/net/wireless/iwlwifi/iwl-agn-rs.c
Просмотреть файл

@ -172,7 +172,7 @@ struct iwl_lq_sta {
};
static void rs_rate_scale_perform(struct iwl_priv *priv,
struct ieee80211_hdr *hdr,
struct sk_buff *skb,
struct ieee80211_sta *sta,
struct iwl_lq_sta *lq_sta);
static void rs_fill_link_cmd(const struct iwl_priv *priv,
@ -829,7 +829,7 @@ static void rs_tx_status(void *priv_r, struct ieee80211_supported_band *sband,
IWL_DEBUG_RATE_LIMIT(priv, "get frame ack response, update rate scale window\n");
if (!ieee80211_is_data(hdr->frame_control) ||
is_multicast_ether_addr(hdr->addr1))
info->flags & IEEE80211_TX_CTL_NO_ACK)
return;
/* This packet was aggregated but doesn't carry rate scale info */
@ -995,7 +995,7 @@ static void rs_tx_status(void *priv_r, struct ieee80211_supported_band *sband,
/* See if there's a better rate or modulation mode to try. */
if (sta && sta->supp_rates[sband->band])
rs_rate_scale_perform(priv, hdr, sta, lq_sta);
rs_rate_scale_perform(priv, skb, sta, lq_sta);
out:
return;
}
@ -1975,12 +1975,14 @@ static void rs_stay_in_table(struct iwl_lq_sta *lq_sta)
* Do rate scaling and search for new modulation mode.
*/
static void rs_rate_scale_perform(struct iwl_priv *priv,
struct ieee80211_hdr *hdr,
struct sk_buff *skb,
struct ieee80211_sta *sta,
struct iwl_lq_sta *lq_sta)
{
struct ieee80211_hw *hw = priv->hw;
struct ieee80211_conf *conf = &hw->conf;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
int low = IWL_RATE_INVALID;
int high = IWL_RATE_INVALID;
int index;
@ -2006,11 +2008,10 @@ static void rs_rate_scale_perform(struct iwl_priv *priv,
IWL_DEBUG_RATE(priv, "rate scale calculate new rate for skb\n");
/* Send management frames and broadcast/multicast data using
* lowest rate. */
/* Send management frames and NO_ACK data using lowest rate. */
/* TODO: this could probably be improved.. */
if (!ieee80211_is_data(hdr->frame_control) ||
is_multicast_ether_addr(hdr->addr1))
info->flags & IEEE80211_TX_CTL_NO_ACK)
return;
if (!sta || !lq_sta)
@ -2450,16 +2451,17 @@ static void rs_get_rate(void *priv_r, struct ieee80211_sta *sta, void *priv_sta,
if (sta)
mask_bit = sta->supp_rates[sband->band];
/* Send management frames and broadcast/multicast data using lowest
* rate. */
/* Send management frames and NO_ACK data using lowest rate. */
if (!ieee80211_is_data(hdr->frame_control) ||
is_multicast_ether_addr(hdr->addr1) || !sta || !lq_sta) {
info->flags & IEEE80211_TX_CTL_NO_ACK || !sta || !lq_sta) {
if (!mask_bit)
info->control.rates[0].idx =
rate_lowest_index(sband, NULL);
else
info->control.rates[0].idx =
rate_lowest_index(sband, sta);
if (info->flags & IEEE80211_TX_CTL_NO_ACK)
info->control.rates[0].count = 1;
return;
}