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rt2x00: trim skb_frame_desc to 32 bytes

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Remove frame_type from skb_frame_desc and pass it
as argument to rt2x00debug_dump_frame().

Change data_len and desc_len to unsigned short
to save another 4 bytes in skb_frame_desc. Note that
this was the only location where the data_len and
desc_len was not yet treated as unsigned short.

This trim is required to help mac80211 with adding
the TX control and TX status informtation into the
skb->cb structure. When that happens, drivers will
have approximately 40 bytes left to use freely.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Ivo van Doorn
2008-05-10 13:41:32 +02:00
committed by John W. Linville
parent 5b06c85c3b
commit 5a6e59991b
4 changed files with 13 additions and 17 deletions
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7
drivers/net/wireless/rt2x00/rt2x00queue.h
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@@ -109,7 +109,6 @@ enum skb_frame_desc_flags {
* this structure should not exceed the size of that array (48 bytes).
*
* @flags: Frame flags, see &enum skb_frame_desc_flags.
* @frame_type: Frame type, see &enum rt2x00_dump_type.
* @data: Pointer to data part of frame (Start of ieee80211 header).
* @desc: Pointer to descriptor part of the frame.
* Note that this pointer could point to something outside
@@ -121,14 +120,12 @@ enum skb_frame_desc_flags {
struct skb_frame_desc {
unsigned int flags;
unsigned int frame_type;
unsigned short data_len;
unsigned short desc_len;
void *data;
void *desc;
unsigned int data_len;
unsigned int desc_len;
struct queue_entry *entry;
};