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ath9k: fix filtering out multi-descriptor frames, which can cause issues with 11n links because of bogus rx status data
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@21351 3c298f89-4303-0410-b956-a3cf2f4a3e73
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@ -0,0 +1,24 @@
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--- a/drivers/net/wireless/ath/ath9k/common.c
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+++ b/drivers/net/wireless/ath/ath9k/common.c
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@@ -57,13 +57,19 @@ static bool ath9k_rx_accept(struct ath_c
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* rs_more indicates chained descriptors which can be used
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* to link buffers together for a sort of scatter-gather
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* operation.
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- *
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+ * reject the frame, we don't support scatter-gather yet and
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+ * the frame is probably corrupt anyway
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+ */
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+ if (rx_stats->rs_more)
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+ return false;
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+
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+ /*
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* The rx_stats->rs_status will not be set until the end of the
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* chained descriptors so it can be ignored if rs_more is set. The
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* rs_more will be false at the last element of the chained
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* descriptors.
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*/
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- if (!rx_stats->rs_more && rx_stats->rs_status != 0) {
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+ if (rx_stats->rs_status != 0) {
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if (rx_stats->rs_status & ATH9K_RXERR_CRC)
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rxs->flag |= RX_FLAG_FAILED_FCS_CRC;
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if (rx_stats->rs_status & ATH9K_RXERR_PHY)
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