diff options
Diffstat (limited to 'target/linux/rb532/patches-2.6.28/008-korina_reset_resource_buffer_size_1536.patch')
| -rw-r--r-- | target/linux/rb532/patches-2.6.28/008-korina_reset_resource_buffer_size_1536.patch | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/target/linux/rb532/patches-2.6.28/008-korina_reset_resource_buffer_size_1536.patch b/target/linux/rb532/patches-2.6.28/008-korina_reset_resource_buffer_size_1536.patch new file mode 100644 index 000000000..1db2e0ecb --- /dev/null +++ b/target/linux/rb532/patches-2.6.28/008-korina_reset_resource_buffer_size_1536.patch @@ -0,0 +1,31 @@ +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> +--- + 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)) +-- +1.5.6.4 + + |