From a13b27826a67bfc0ca444fb42885f2069b6898e2 Mon Sep 17 00:00:00 2001 From: Phil Sutter Date: Wed, 14 Jan 2009 21:47:50 -0800 Subject: korina: reset resource buffer size to 1536 The new value is the one used in the external patch before and allows at least a standard MTU of 1500 to be handled correctly. Impact of this change gets visible when bigger packets are to be received, issuing: | ping -s 492 and bigger payload sized led to 100% packet loss. Signed-off-by: Phil Sutter Acked-by: Florian Fainelli --- drivers/net/korina.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/korina.c b/drivers/net/korina.c index fefb33db79a3..e30c2f437d19 100644 --- a/drivers/net/korina.c +++ b/drivers/net/korina.c @@ -84,7 +84,10 @@ #define KORINA_NUM_RDS 64 /* number of receive descriptors */ #define KORINA_NUM_TDS 64 /* number of transmit descriptors */ -#define KORINA_RBSIZE 536 /* size of one resource buffer = Ether MTU */ +/* KORINA_RBSIZE is the hardware's default maximum receive + * frame size in bytes. Having this hardcoded means that there + * is no support for MTU sizes greater than 1500. */ +#define KORINA_RBSIZE 1536 /* size of one resource buffer = Ether MTU */ #define KORINA_RDS_MASK (KORINA_NUM_RDS - 1) #define KORINA_TDS_MASK (KORINA_NUM_TDS - 1) #define RD_RING_SIZE (KORINA_NUM_RDS * sizeof(struct dma_desc)) -- cgit v1.2.3