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rtlwifi: usb: use usb_alloc_coherent for RX buffers

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Use dedicated DMA coherent buffers for RX urbs, to avoid allocation of large
skbuffs in hard-irq context and improve performance.

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Jussi Kivilinna 2013-03-17 11:59:13 +02:00 • committed by John W. Linville
parent 2ed79f38c4
commit 872de8ff04
2 changed files with 68 additions and 47 deletions
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1
drivers/net/wireless/rtlwifi/usb.h
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@ -141,6 +141,7 @@ struct rtl_usb {
u32 rx_max_size; /* Bulk IN max buffer size */
u32 rx_urb_num; /* How many Bulk INs are submitted to host. */
struct usb_anchor rx_submitted;
struct usb_anchor rx_cleanup_urbs;
void (*usb_rx_segregate_hdl)(struct ieee80211_hw *, struct sk_buff *,
struct sk_buff_head *);
void (*usb_rx_hdl)(struct ieee80211_hw *, struct sk_buff *);