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authorChristian Lamparter <chunkeey@googlemail.com>2011-01-23 00:18:28 +0100
committerJohn W. Linville <linville@tuxdriver.com>2011-01-27 16:03:56 -0500
commitaa32452dcff1f95976fb28b5a28ecc93f47d0472 (patch)
treed5f92b88218125acb51e17b21af489b9aee4bd2e /drivers
parentc42d6cf25d648d95387d8a881aa0cab657470726 (diff)
downloadlinux-aa32452dcff1f95976fb28b5a28ecc93f47d0472.tar.gz
carl9170: utilize fw seq counter for mgmt/non-QoS data frames
"mac80211 will properly assign sequence numbers to QoS-data
frames but cannot do so correctly for non-QoS-data and
management frames because beacons need them from that counter
as well and mac80211 cannot guarantee proper sequencing."

Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/wireless/ath/carl9170/carl9170.h1
-rw-r--r--drivers/net/wireless/ath/carl9170/fw.c12
-rw-r--r--drivers/net/wireless/ath/carl9170/main.c7
-rw-r--r--drivers/net/wireless/ath/carl9170/tx.c3
4 files changed, 23 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/carl9170/carl9170.h b/drivers/net/wireless/ath/carl9170/carl9170.h
index d07ff7f2fd92..420d437f9580 100644
--- a/drivers/net/wireless/ath/carl9170/carl9170.h
+++ b/drivers/net/wireless/ath/carl9170/carl9170.h
@@ -283,6 +283,7 @@ struct ar9170 {
 		unsigned int mem_blocks;
 		unsigned int mem_block_size;
 		unsigned int rx_size;
+		unsigned int tx_seq_table;
 	} fw;
 
 	/* reset / stuck frames/queue detection */
diff --git a/drivers/net/wireless/ath/carl9170/fw.c b/drivers/net/wireless/ath/carl9170/fw.c
index a4e5b4458c00..9517ede9e2df 100644
--- a/drivers/net/wireless/ath/carl9170/fw.c
+++ b/drivers/net/wireless/ath/carl9170/fw.c
@@ -150,6 +150,7 @@ static int carl9170_fw(struct ar9170 *ar, const __u8 *data, size_t len)
 	const struct carl9170fw_otus_desc *otus_desc;
 	const struct carl9170fw_chk_desc *chk_desc;
 	const struct carl9170fw_last_desc *last_desc;
+	const struct carl9170fw_txsq_desc *txsq_desc;
 
 	last_desc = carl9170_fw_find_desc(ar, LAST_MAGIC,
 		sizeof(*last_desc), CARL9170FW_LAST_DESC_CUR_VER);
@@ -299,6 +300,17 @@ static int carl9170_fw(struct ar9170 *ar, const __u8 *data, size_t len)
 		}
 	}
 
+	txsq_desc = carl9170_fw_find_desc(ar, TXSQ_MAGIC,
+		sizeof(*txsq_desc), CARL9170FW_TXSQ_DESC_CUR_VER);
+
+	if (txsq_desc) {
+		ar->fw.tx_seq_table = le32_to_cpu(txsq_desc->seq_table_addr);
+		if (!valid_cpu_addr(ar->fw.tx_seq_table))
+			return -EINVAL;
+	} else {
+		ar->fw.tx_seq_table = 0;
+	}
+
 #undef SUPPORTED
 	return 0;
 }
diff --git a/drivers/net/wireless/ath/carl9170/main.c b/drivers/net/wireless/ath/carl9170/main.c
index ecfb80b059d1..ede3d7e5a048 100644
--- a/drivers/net/wireless/ath/carl9170/main.c
+++ b/drivers/net/wireless/ath/carl9170/main.c
@@ -662,6 +662,13 @@ init:
 			goto unlock;
 	}
 
+	if (ar->fw.tx_seq_table) {
+		err = carl9170_write_reg(ar, ar->fw.tx_seq_table + vif_id * 4,
+					 0);
+		if (err)
+			goto unlock;
+	}
+
 unlock:
 	if (err && (vif_id >= 0)) {
 		vif_priv->active = false;
diff --git a/drivers/net/wireless/ath/carl9170/tx.c b/drivers/net/wireless/ath/carl9170/tx.c
index 6cc58e052d10..6f41e21d3a1c 100644
--- a/drivers/net/wireless/ath/carl9170/tx.c
+++ b/drivers/net/wireless/ath/carl9170/tx.c
@@ -862,6 +862,9 @@ static int carl9170_tx_prepare(struct ar9170 *ar, struct sk_buff *skb)
 	if (unlikely(info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM))
 		txc->s.misc |= CARL9170_TX_SUPER_MISC_CAB;
 
+	if (unlikely(info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ))
+		txc->s.misc |= CARL9170_TX_SUPER_MISC_ASSIGN_SEQ;
+
 	if (unlikely(ieee80211_is_probe_resp(hdr->frame_control)))
 		txc->s.misc |= CARL9170_TX_SUPER_MISC_FILL_IN_TSF;