From: Phil Sutter Date: Thu, 15 Jan 2009 05:47:50 +0000 (-0800) Subject: korina: reset resource buffer size to 1536 X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=a13b27826a67bfc0ca444fb42885f2069b6898e2;p=openwrt%2Fstaging%2Fblogic.git 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 --- 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))