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author | Gertjan van Wingerde <gwingerde@kpnplanet.nl> | 2008-06-16 19:56:31 +0200 |
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committer | John W. Linville <linville@tuxdriver.com> | 2008-06-26 16:49:16 -0400 |
commit | c4da004857056e6ee034c4110ccdcba659077b7e (patch) | |
tree | 641f8d9ddab7b8b6ba41fefc57a517abce15e8e6 /drivers/net/wireless/rt2x00/rt2x00queue.h | |
parent | 30caa6e3d586442f7c3ad081260ee1b22bb123de (diff) | |
download | linux-3.10-c4da004857056e6ee034c4110ccdcba659077b7e.tar.gz linux-3.10-c4da004857056e6ee034c4110ccdcba659077b7e.tar.bz2 linux-3.10-c4da004857056e6ee034c4110ccdcba659077b7e.zip |
rt2x00: Replace statically allocated DMA buffers with mapped skb's.
The current PCI drivers require a lot of pre-allocated DMA buffers. Reduce this
by using dynamically mapped skb's (using pci_map_single) instead of the pre-
allocated DMA buffers that are allocated at device start-up time.
At the same time move common RX path code into rt2x00lib from rt2x00pci and
rt2x00usb, as the RX paths now are now almost the same.
Signed-off-by: Gertjan van Wingerde <gwingerde@kpnplanet.nl>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2x00queue.h')
-rw-r--r-- | drivers/net/wireless/rt2x00/rt2x00queue.h | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2x00queue.h b/drivers/net/wireless/rt2x00/rt2x00queue.h index fcf52520b01..192b6e789a7 100644 --- a/drivers/net/wireless/rt2x00/rt2x00queue.h +++ b/drivers/net/wireless/rt2x00/rt2x00queue.h @@ -83,9 +83,10 @@ enum data_queue_qid { * enum skb_frame_desc_flags: Flags for &struct skb_frame_desc * */ -//enum skb_frame_desc_flags { -// TEMPORARILY EMPTY -//}; +enum skb_frame_desc_flags { + SKBDESC_DMA_MAPPED_RX = (1 << 0), + SKBDESC_DMA_MAPPED_TX = (1 << 1), +}; /** * struct skb_frame_desc: Descriptor information for the skb buffer @@ -94,19 +95,20 @@ enum data_queue_qid { * this structure should not exceed the size of that array (40 bytes). * * @flags: Frame flags, see &enum skb_frame_desc_flags. - * @data: Pointer to data part of frame (Start of ieee80211 header). + * @desc_len: Length of the frame descriptor. * @desc: Pointer to descriptor part of the frame. * Note that this pointer could point to something outside * of the scope of the skb->data pointer. - * @data_len: Length of the frame data. - * @desc_len: Length of the frame descriptor. + * @skb_dma: (PCI-only) the DMA address associated with the sk buffer. * @entry: The entry to which this sk buffer belongs. */ struct skb_frame_desc { unsigned int flags; - void *desc; unsigned int desc_len; + void *desc; + + dma_addr_t skb_dma; struct queue_entry *entry; }; |