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bgmac: increase rx ring size from 511 to 512

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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>
This commit is contained in:
Felix Fietkau 2015-04-14 12:07:59 +02:00 committed by David S. Miller
parent 6a6c708469
commit b9650557f3
1 changed files with 1 additions and 1 deletions
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drivers/net/ethernet/broadcom/bgmac.h
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@ -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 */