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| author | emaste <emaste@FreeBSD.org> | 2012-10-03 21:41:20 +0000 |
|---|---|---|
| committer | emaste <emaste@FreeBSD.org> | 2012-10-03 21:41:20 +0000 |
| commit | eff3cfa56f68ba919d9022148cbf8f3c6e90757e (patch) | |
| tree | 839ee148464ce76a273ba161828b410e385a1938 /sys/net/netmap_user.h | |
| parent | fc02898d2b53483e0c3e7ac6b4d1520e27365095 (diff) | |
| download | FreeBSD-src-eff3cfa56f68ba919d9022148cbf8f3c6e90757e.zip FreeBSD-src-eff3cfa56f68ba919d9022148cbf8f3c6e90757e.tar.gz | |
Cast through void * to silence compiler warning
The base netmap pointer and offsets involved are provided by the kernel
side of the netmap interface and will have appropriate alignment.
Sponsored by: ADARA Networks
MFC After: 2 weeks
Diffstat (limited to 'sys/net/netmap_user.h')
| -rw-r--r-- | sys/net/netmap_user.h | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/sys/net/netmap_user.h b/sys/net/netmap_user.h index 743ec32..cefbec7 100644 --- a/sys/net/netmap_user.h +++ b/sys/net/netmap_user.h @@ -62,15 +62,16 @@ #ifndef _NET_NETMAP_USER_H_ #define _NET_NETMAP_USER_H_ -#define NETMAP_IF(b, o) (struct netmap_if *)((char *)(b) + (o)) +#define _NETMAP_OFFSET(type, ptr, offset) \ + ((type)(void *)((char *)(ptr) + (offset))) -#define NETMAP_TXRING(nifp, index) \ - ((struct netmap_ring *)((char *)(nifp) + \ - (nifp)->ring_ofs[index] ) ) +#define NETMAP_IF(b, o) _NETMAP_OFFSET(struct netmap_if *, b, o) -#define NETMAP_RXRING(nifp, index) \ - ((struct netmap_ring *)((char *)(nifp) + \ - (nifp)->ring_ofs[index + (nifp)->ni_tx_rings + 1] ) ) +#define NETMAP_TXRING(nifp, index) _NETMAP_OFFSET(struct netmap_ring *, \ + nifp, (nifp)->ring_ofs[index] ) + +#define NETMAP_RXRING(nifp, index) _NETMAP_OFFSET(struct netmap_ring *, \ + nifp, (nifp)->ring_ofs[index + (nifp)->ni_tx_rings + 1] ) #define NETMAP_BUF(ring, index) \ ((char *)(ring) + (ring)->buf_ofs + ((index)*(ring)->nr_buf_size)) |
