diff options
| author | Phil Sutter <n0-1@freewrt.org> | 2009-01-14 21:47:50 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-01-15 08:28:18 -0800 |
| commit | a13b27826a67bfc0ca444fb42885f2069b6898e2 (patch) | |
| tree | 7eaaf4f96c8dddfb6cfeead4996d930b8f7ad57a | |
| parent | b96ecfa689126d1e652ebd758da0b5b9b27dbd12 (diff) | |
| download | op-kernel-dev-a13b27826a67bfc0ca444fb42885f2069b6898e2.zip op-kernel-dev-a13b27826a67bfc0ca444fb42885f2069b6898e2.tar.gz | |
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 <IP>
and bigger payload sized led to 100% packet loss.
Signed-off-by: Phil Sutter <n0-1@freewrt.org>
Acked-by: Florian Fainelli <florian@openwrt.org
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/korina.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/net/korina.c b/drivers/net/korina.c index fefb33d..e30c2f4 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)) |
