---

yaml --- r: 256379 b: refs/heads/master c: e156103 h: refs/heads/master i: 256377: 52e3b4a 256375: 1a01218 v: v3
git-mirror · Jul 8, 2011 · 0006f0d · 0006f0d
1 parent 83b1745
commit 0006f0d
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Showing 3 changed files with 13 additions and 6 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 38869d79e5b498bd35c9967231dfb01cdd301bf5
+refs/heads/master: e156103cee78a1dd1c0d14efe08aa36fc9285013
diff --git a/trunk/drivers/net/wireless/mwifiex/decl.h b/trunk/drivers/net/wireless/mwifiex/decl.h
@@ -30,7 +30,9 @@
 
 #define MWIFIEX_MAX_BSS_NUM         (1)
 
-#define MWIFIEX_MIN_DATA_HEADER_LEN 32	/* (sizeof(mwifiex_txpd)) */
+#define MWIFIEX_MIN_DATA_HEADER_LEN 36	/* sizeof(mwifiex_txpd)
+					 *   + 4 byte alignment
+					 */
 
 #define MWIFIEX_MAX_TX_BASTREAM_SUPPORTED	2
 #define MWIFIEX_MAX_RX_BASTREAM_SUPPORTED	16

diff --git a/trunk/drivers/net/wireless/mwifiex/sta_tx.c b/trunk/drivers/net/wireless/mwifiex/sta_tx.c
@@ -47,6 +47,7 @@ void *mwifiex_process_sta_txpd(struct mwifiex_private *priv,
 	struct mwifiex_adapter *adapter = priv->adapter;
 	struct txpd *local_tx_pd;
 	struct mwifiex_txinfo *tx_info = MWIFIEX_SKB_TXCB(skb);
+	u8 pad;
 
 	if (!skb->len) {
 		dev_err(adapter->dev, "Tx: bad packet length: %d\n",
@@ -55,15 +56,19 @@ void *mwifiex_process_sta_txpd(struct mwifiex_private *priv,
 		return skb->data;
 	}
 
-	BUG_ON(skb_headroom(skb) < (sizeof(*local_tx_pd) + INTF_HEADER_LEN));
-	skb_push(skb, sizeof(*local_tx_pd));
+	/* If skb->data is not aligned; add padding */
+	pad = (4 - (((void *)skb->data - NULL) & 0x3)) % 4;
+
+	BUG_ON(skb_headroom(skb) < (sizeof(*local_tx_pd) + INTF_HEADER_LEN
+								+ pad));
+	skb_push(skb, sizeof(*local_tx_pd) + pad);
 
 	local_tx_pd = (struct txpd *) skb->data;
 	memset(local_tx_pd, 0, sizeof(struct txpd));
 	local_tx_pd->bss_num = priv->bss_num;
 	local_tx_pd->bss_type = priv->bss_type;
 	local_tx_pd->tx_pkt_length = cpu_to_le16((u16) (skb->len -
-							sizeof(struct txpd)));
+						(sizeof(struct txpd) + pad)));
 
 	local_tx_pd->priority = (u8) skb->priority;
 	local_tx_pd->pkt_delay_2ms =
@@ -88,7 +93,7 @@ void *mwifiex_process_sta_txpd(struct mwifiex_private *priv,
 	}
 
 	/* Offset of actual data */
-	local_tx_pd->tx_pkt_offset = cpu_to_le16(sizeof(struct txpd));
+	local_tx_pd->tx_pkt_offset = cpu_to_le16(sizeof(struct txpd) + pad);
 
 	/* make space for INTF_HEADER_LEN */
 	skb_push(skb, INTF_HEADER_LEN);