diff options
Diffstat (limited to 'drivers/net/gianfar.h')
| -rw-r--r-- | drivers/net/gianfar.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/net/gianfar.h b/drivers/net/gianfar.h index 1bdb50c7936..1ebf7ac27a3 100644 --- a/drivers/net/gianfar.h +++ b/drivers/net/gianfar.h @@ -196,6 +196,12 @@ extern const char gfar_driver_version[]; #define DEFAULT_TXIC mk_ic_value(DEFAULT_TXCOUNT, DEFAULT_TXTIME) #define DEFAULT_RXIC mk_ic_value(DEFAULT_RXCOUNT, DEFAULT_RXTIME) +#define skip_bd(bdp, stride, base, ring_size) ({ \ + typeof(bdp) new_bd = (bdp) + (stride); \ + (new_bd >= (base) + (ring_size)) ? (new_bd - (ring_size)) : new_bd; }) + +#define next_bd(bdp, base, ring_size) skip_bd(bdp, 1, base, ring_size) + #define RCTRL_PAL_MASK 0x001f0000 #define RCTRL_VLEX 0x00002000 #define RCTRL_FILREN 0x00001000 |