diff options
| author | Song, Yoong Siang <yoong.siang.song@intel.com> | 2020-09-16 15:40:20 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-09-16 15:22:52 -0700 |
| commit | aa042f60e4961d4bec57e3268624df1f3a6befa4 (patch) | |
| tree | c0d0bb6a3feab3d44a0ad1901b20b15e04b1bdc5 /drivers/net/ethernet/stmicro/stmmac/common.h | |
| parent | 18e9a407323fa8ffa2ba64c4240a2d4faeb9ad4d (diff) | |
net: stmmac: Add support to Ethtool get/set ring parameters
This patch add support to --show-ring & --set-ring Ethtool functions:
- Adding min, max, power of two check to new ring parameter's value.
- Bring down the network interface before changing the value of ring
parameters.
- Bring up the network interface after changing the value of ring
parameters.
Signed-off-by: Song, Yoong Siang <yoong.siang.song@intel.com>
Signed-off-by: Voon Weifeng <weifeng.voon@intel.com>
Signed-off-by: Ong Boon Leong <boon.leong.ong@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/stmicro/stmmac/common.h')
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/common.h | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/common.h b/drivers/net/ethernet/stmicro/stmmac/common.h index acc5e3fc1c2f..cafa8e3c3573 100644 --- a/drivers/net/ethernet/stmicro/stmmac/common.h +++ b/drivers/net/ethernet/stmicro/stmmac/common.h @@ -42,9 +42,16 @@ #define STMMAC_CHAN0 0 /* Always supported and default for all chips */ -/* These need to be power of two, and >= 4 */ -#define DMA_TX_SIZE 512 -#define DMA_RX_SIZE 512 +/* TX and RX Descriptor Length, these need to be power of two. + * TX descriptor length less than 64 may cause transmit queue timed out error. + * RX descriptor length less than 64 may cause inconsistent Rx chain error. + */ +#define DMA_MIN_TX_SIZE 64 +#define DMA_MAX_TX_SIZE 1024 +#define DMA_DEFAULT_TX_SIZE 512 +#define DMA_MIN_RX_SIZE 64 +#define DMA_MAX_RX_SIZE 1024 +#define DMA_DEFAULT_RX_SIZE 512 #define STMMAC_GET_ENTRY(x, size) ((x + 1) & (size - 1)) #undef FRAME_FILTER_DEBUG |