Commit b9650557 authored Apr 14, 2015 by Felix Fietkau Committed by David S. Miller Apr 14, 2015

bgmac: increase rx ring size from 511 to 512



Limiting it to 511 looks like a failed attempt at leaving one descriptor
empty to allow the hardware to stop processing a buffer that has not
been prepared yet. However, this doesn't work because this affects the
total ring size as well

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 6a6c7084

drivers/net/ethernet/broadcom/bgmac.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -356,7 +356,7 @@
		#define BGMAC_MAX_RX_RINGS 1

		#define BGMAC_TX_RING_SLOTS 128
		#define BGMAC_RX_RING_SLOTS 512 - 1 /* Why -1? Well, Broadcom does that... */
		#define BGMAC_RX_RING_SLOTS 512

		#define BGMAC_RX_HEADER_LEN 28 /* Last 24 bytes are unused. Well... */
		#define BGMAC_RX_FRAME_OFFSET 30 /* There are 2 unused bytes between header and real data */