KumiSystems/openwrtv4
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

ath9k: fix filtering out multi-descriptor frames, which can cause issues with 11n links because of bogus rx status data

Browse source 
SVN-Revision: 21351
This commit is contained in:
Felix Fietkau 2010-05-04 08:01:58 +00:00
parent 724e84146d
commit 34ad2a0b71
1 changed files with 24 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

24
package/mac80211/patches/550-ath9k_no_multi_desc_frames.patch Normal file
View file

@ -0,0 +1,24 @@
--- a/drivers/net/wireless/ath/ath9k/common.c
+++ b/drivers/net/wireless/ath/ath9k/common.c
@@ -57,13 +57,19 @@ static bool ath9k_rx_accept(struct ath_c
* rs_more indicates chained descriptors which can be used
* to link buffers together for a sort of scatter-gather
* operation.
- *
+ * reject the frame, we don't support scatter-gather yet and
+ * the frame is probably corrupt anyway
+ */
+ if (rx_stats->rs_more)
+ return false;
+
+ /*
* The rx_stats->rs_status will not be set until the end of the
* chained descriptors so it can be ignored if rs_more is set. The
* rs_more will be false at the last element of the chained
* descriptors.
*/
- if (!rx_stats->rs_more && rx_stats->rs_status != 0) {
+ if (rx_stats->rs_status != 0) {
if (rx_stats->rs_status & ATH9K_RXERR_CRC)
rxs->flag |= RX_FLAG_FAILED_FCS_CRC;
if (rx_stats->rs_status & ATH9K_RXERR_PHY)