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path: root/drivers/net/wireless/rt2x00/rt2x00pci.c
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Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2x00pci.c')
-rw-r--r--drivers/net/wireless/rt2x00/rt2x00pci.c20
1 files changed, 16 insertions, 4 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2x00pci.c b/drivers/net/wireless/rt2x00/rt2x00pci.c
index 2780df00623..6d5d9aba0b7 100644
--- a/drivers/net/wireless/rt2x00/rt2x00pci.c
+++ b/drivers/net/wireless/rt2x00/rt2x00pci.c
@@ -124,7 +124,10 @@ void rt2x00pci_rxdone(struct rt2x00_dev *rt2x00dev)
struct data_entry *entry;
struct data_desc *rxd;
struct sk_buff *skb;
+ struct ieee80211_hdr *hdr;
struct rxdata_entry_desc desc;
+ int header_size;
+ int align;
u32 word;
while (1) {
@@ -138,17 +141,26 @@ void rt2x00pci_rxdone(struct rt2x00_dev *rt2x00dev)
memset(&desc, 0x00, sizeof(desc));
rt2x00dev->ops->lib->fill_rxdone(entry, &desc);
+ hdr = (struct ieee80211_hdr *)entry->data_addr;
+ header_size =
+ ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_control));
+
+ /*
+ * The data behind the ieee80211 header must be
+ * aligned on a 4 byte boundary.
+ */
+ align = NET_IP_ALIGN + (2 * (header_size % 4 == 0));
+
/*
* Allocate the sk_buffer, initialize it and copy
* all data into it.
*/
- skb = dev_alloc_skb(desc.size + NET_IP_ALIGN);
+ skb = dev_alloc_skb(desc.size + align);
if (!skb)
return;
- skb_reserve(skb, NET_IP_ALIGN);
- skb_put(skb, desc.size);
- memcpy(skb->data, entry->data_addr, desc.size);
+ skb_reserve(skb, align);
+ memcpy(skb_put(skb, desc.size), entry->data_addr, desc.size);
/*
* Send the frame to rt2x00lib for further processing.