From 8e9f33f0ced82a797d285b233e1c956cbd5c7de3 Mon Sep 17 00:00:00 2001
From: Lennert Buytenhek <buytenh@wantstofly.org>
Date: Mon, 30 Nov 2009 18:12:35 +0100
Subject: [PATCH] mwl8k: properly report rate on received 40MHz packets
On 8366, bit 6 in the rx descriptor rate field indicates whether the
packet was received on a 20MHz or 40MHz channel, and is not part of
the MCS index. Handle this properly, which then prevents hitting the
WARN_ON and being dropped in ieee80211_rx().
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
drivers/net/wireless/mwl8k.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/mwl8k.c b/drivers/net/wireless/mwl8k.c
index c1cb20fceaf..f1566f93696 100644
--- a/drivers/net/wireless/mwl8k.c
+++ b/drivers/net/wireless/mwl8k.c
@@ -782,6 +782,10 @@ struct mwl8k_rxd_8366 {
__u8 rx_ctrl;
} __attribute__((packed));
+#define MWL8K_8366_RATE_INFO_MCS_FORMAT 0x80
+#define MWL8K_8366_RATE_INFO_40MHZ 0x40
+#define MWL8K_8366_RATE_INFO_RATEID(x) ((x) & 0x3f)
+
#define MWL8K_8366_RX_CTRL_OWNED_BY_HOST 0x80
static void mwl8k_rxd_8366_init(void *_rxd, dma_addr_t next_dma_addr)
@@ -817,9 +821,11 @@ mwl8k_rxd_8366_process(void *_rxd, struct ieee80211_rx_status *status,
status->signal = -rxd->rssi;
status->noise = -rxd->noise_floor;
- if (rxd->rate & 0x80) {
+ if (rxd->rate & MWL8K_8366_RATE_INFO_MCS_FORMAT) {
status->flag |= RX_FLAG_HT;
- status->rate_idx = rxd->rate & 0x7f;
+ if (rxd->rate & MWL8K_8366_RATE_INFO_40MHZ)
+ status->flag |= RX_FLAG_40MHZ;
+ status->rate_idx = MWL8K_8366_RATE_INFO_RATEID(rxd->rate);
} else {
int i;
--
2.20.1