While ar9170's USB transport packet size is currently set to 8KiB, the PHY is capable of receiving AMPDUs with up to 64KiB. Such a large frame will be split over several rx URBs and exceed the previously allocated space for rx stream reconstruction. This patch increases the buffer size to 64KiB which is in fact the phy & rx stream designed size limit. Cc: stable@xxxxxxxxxx Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=15591 Reported-by: Christian Mehlis <mehlis@xxxxxxxxxxxxxxxx> Signed-off-by: Christian Lamparter <chunkeey@xxxxxxxxxxxxxx> --- diff --git a/drivers/net/wireless/ath/ar9170/hw.h b/drivers/net/wireless/ath/ar9170/hw.h index 0a1d4c2..06f1f3c 100644 --- a/drivers/net/wireless/ath/ar9170/hw.h +++ b/drivers/net/wireless/ath/ar9170/hw.h @@ -425,5 +425,6 @@ enum ar9170_txq { #define AR9170_TXQ_DEPTH 32 #define AR9170_TX_MAX_PENDING 128 +#define AR9170_RX_STREAM_MAX_SIZE 65535 #endif /* __AR9170_HW_H */ diff --git a/drivers/net/wireless/ath/ar9170/main.c b/drivers/net/wireless/ath/ar9170/main.c index 257c734..e017119 100644 --- a/drivers/net/wireless/ath/ar9170/main.c +++ b/drivers/net/wireless/ath/ar9170/main.c @@ -2515,7 +2515,7 @@ void *ar9170_alloc(size_t priv_size) * tends to split the streams into separate rx descriptors. */ - skb = __dev_alloc_skb(AR9170_MAX_RX_BUFFER_SIZE, GFP_KERNEL); + skb = __dev_alloc_skb(AR9170_RX_STREAM_MAX_SIZE, GFP_KERNEL); if (!skb) goto err_nomem; -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
