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rt2x00: Remove obsolete rt2x00queue_align_payload

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Since commit d1c3a37cee ("mac80211:
clarify alignment docs, fix up alignment") removed the requirement
for a 4-byte aligned payload rt2x00queue_align_payload is obsolete
as mac80211 will align the payload when it passes the frame to the
net stack.

As a result we can remove the call to rt2x00queue_align_payload in the
rx path and since that's the last user we can remove
rt2x00queue_align_payload altogether.

One advantage is that we save some alignment operations for frames
that don't need to be aligned (for example beause they are not passed
to the net stack).

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Helmut Schaa 2011-03-28 13:33:04 +02:00 committed by John W. Linville
parent fa71a16027
commit 2f2bb7e8bd
3 changed files with 0 additions and 25 deletions
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2
drivers/net/wireless/rt2x00/rt2x00dev.c
View File

@ -512,8 +512,6 @@ void rt2x00lib_rxdone(struct queue_entry *entry)
(rxdesc.size > header_length) &&
(rxdesc.dev_flags & RXDONE_L2PAD))
rt2x00queue_remove_l2pad(entry->skb, header_length);
else
rt2x00queue_align_payload(entry->skb, header_length);
/* Trim buffer to correct size */
skb_trim(entry->skb, rxdesc.size);

10
drivers/net/wireless/rt2x00/rt2x00lib.h
View File

@ -118,16 +118,6 @@ void rt2x00queue_free_skb(struct queue_entry *entry);
*/
void rt2x00queue_align_frame(struct sk_buff *skb);
/**
* rt2x00queue_align_payload - Align 802.11 payload to 4-byte boundary
* @skb: The skb to align
* @header_length: Length of 802.11 header
*
* Align the 802.11 payload to a 4-byte boundary, this could
* mean the header is not aligned properly though.
*/
void rt2x00queue_align_payload(struct sk_buff *skb, unsigned int header_length);
/**
* rt2x00queue_insert_l2pad - Align 802.11 header & payload to 4-byte boundary
* @skb: The skb to align

13
drivers/net/wireless/rt2x00/rt2x00queue.c
View File

@ -148,19 +148,6 @@ void rt2x00queue_align_frame(struct sk_buff *skb)
skb_trim(skb, frame_length);
}
void rt2x00queue_align_payload(struct sk_buff *skb, unsigned int header_length)
{
unsigned int frame_length = skb->len;
unsigned int align = ALIGN_SIZE(skb, header_length);
if (!align)
return;
skb_push(skb, align);
memmove(skb->data, skb->data + align, frame_length);
skb_trim(skb, frame_length);
}
void rt2x00queue_insert_l2pad(struct sk_buff *skb, unsigned int header_length)
{
unsigned int payload_length = skb->len - header_length;