diff options
Diffstat (limited to 'sys/net/bpfdesc.h')
| -rw-r--r-- | sys/net/bpfdesc.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sys/net/bpfdesc.h b/sys/net/bpfdesc.h index fe059cd..73dcc90 100644 --- a/sys/net/bpfdesc.h +++ b/sys/net/bpfdesc.h @@ -104,6 +104,12 @@ struct bpf_d { #define BPFD_LOCK(bd) mtx_lock(&(bd)->bd_mtx) #define BPFD_UNLOCK(bd) mtx_unlock(&(bd)->bd_mtx) +/* Test whether a BPF is ready for read(). */ +#define bpf_ready(bd) \ + ((bd)->bd_hlen != 0 || \ + (((bd)->bd_immediate || (bd)->bd_state == BPF_TIMED_OUT) && \ + (bd)->bd_slen != 0)) + /* * Descriptor associated with each attached hardware interface. */ |
