Commit 75be3e24 authored Nov 15, 2012 by Seth Forshee Committed by John W. Linville Nov 20, 2012

brcmsmac: Reduce number of entries in tx DMA rings



Currently up to 256 frames can be queued for each DMA ring. This is
excessive, and now that we have better flow control we can get by with
less. Experimentation has shown 64 to work well.

Signed-off-by: Seth Forshee <seth.forshee@canonical.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Arend van Spriel <arend@broadcom.com>
Tested-by: Daniel Wagner <wagi@monom.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

parent b05618de

drivers/net/wireless/brcm80211/brcmsmac/main.c

+2 −2

Original line number	Original line	Diff line number	Diff line
	@@ -232,8 +232,8 @@

	#define MAX_DMA_SEGS 4		#define MAX_DMA_SEGS 4

	/* Max # of entries in Tx FIFO based on 4kb page size */		/* # of entries in Tx FIFO */
	#define NTXD 256		#define NTXD 64
	/* Max # of entries in Rx FIFO based on 4kb page size */		/* Max # of entries in Rx FIFO based on 4kb page size */
	#define NRXD 256		#define NRXD 256