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authorHelmut Schaa <helmut.schaa@googlemail.com>2011-03-21 14:07:55 (GMT)
committerJohn W. Linville <linville@tuxdriver.com>2011-03-30 18:15:16 (GMT)
commitbe7974aa105dc47bb25013016d1fcad17da17783 (patch)
treecd3b3f344de20720e7b65a84a88c8d1b4b99e3f3 /net
parenta9cbe96d19861755680a712b709cccac5dc6aca8 (diff)
downloadlinux-fsl-qoriq-be7974aa105dc47bb25013016d1fcad17da17783.tar.xz
mac80211: Minor optimization in tx status handling
ieee80211_tx_status iterates over all tx rates the driver reports back in order to 1) mark tx rates as invalid if the driver cannot have tried that rate 2) find the actually used tx rate for the final retransmission By leaving the for loop when the first invalid rate index is found we can move the rates_idx assignment after the loop and therefore save a few assignments and conditionals. Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net')
-rw-r--r--net/mac80211/status.c11
1 files changed, 7 insertions, 4 deletions
diff --git a/net/mac80211/status.c b/net/mac80211/status.c
index b936dd2..3ed3c83 100644
--- a/net/mac80211/status.c
+++ b/net/mac80211/status.c
@@ -189,16 +189,19 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
bool acked;
for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
- /* the HW cannot have attempted that rate */
- if (i >= hw->max_report_rates) {
+ if (info->status.rates[i].idx < 0) {
+ break;
+ } else if (i >= hw->max_report_rates) {
+ /* the HW cannot have attempted that rate */
info->status.rates[i].idx = -1;
info->status.rates[i].count = 0;
- } else if (info->status.rates[i].idx >= 0) {
- rates_idx = i;
+ break;
}
retry_count += info->status.rates[i].count;
}
+ rates_idx = i - 1;
+
if (retry_count < 0)
retry_count = 0;