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| author | mjacob <mjacob@FreeBSD.org> | 2000-01-18 01:42:11 +0000 |
|---|---|---|
| committer | mjacob <mjacob@FreeBSD.org> | 2000-01-18 01:42:11 +0000 |
| commit | 7d5f58b26b1bafd25e34a60d7abcf048ba915e72 (patch) | |
| tree | f931814c94c04f282a881b9f041824802da504d8 /sys/pci | |
| parent | e8eebed1f33c8ddb583f8c2dbf4489a22349e49d (diff) | |
| download | FreeBSD-src-7d5f58b26b1bafd25e34a60d7abcf048ba915e72.zip FreeBSD-src-7d5f58b26b1bafd25e34a60d7abcf048ba915e72.tar.gz | |
add a R_PREV_IDX macro
Diffstat (limited to 'sys/pci')
| -rw-r--r-- | sys/pci/if_wxvar.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sys/pci/if_wxvar.h b/sys/pci/if_wxvar.h index 0b29098..3454567 100644 --- a/sys/pci/if_wxvar.h +++ b/sys/pci/if_wxvar.h @@ -314,3 +314,4 @@ typedef struct wx_softc { #define T_NXT_IDX(x) ((x + 1) & (WX_MAX_TDESC - 1)) #define WX_MAX_RDESC 64 /* number of receive descriptors */ #define R_NXT_IDX(x) ((x + 1) & (WX_MAX_RDESC - 1)) +#define R_PREV_IDX(x) ((x - 1) & (WX_MAX_RDESC - 1)) |
