diff options
Diffstat (limited to 'wiretap/bpf.h')
| -rw-r--r-- | wiretap/bpf.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/wiretap/bpf.h b/wiretap/bpf.h new file mode 100644 index 0000000000..81b8572873 --- /dev/null +++ b/wiretap/bpf.h @@ -0,0 +1,22 @@ + +/* we limit the number of BPF records a jmp can take by using a few of the + * jmp values as special identifiers during the compilation process. Many + * pieces of code need to jump to the end of the entire BPF block, returing + * either a successful value or a failure value (either the number of bytes + * to read, or 0). The code creator uses these 4 variables to represent + * the retval of failure or success, then the code cleaner fills in the + * true value for these variables. + */ +#define NO_LABEL 255 +#define END_OF_PROGRAM_FAILURE 254 +#define END_OF_PROGRAM_SUCCESS 253 +#define NEXT_BLOCK 252 + +void +wtap_filter_bpf_init(void); + +void +wtap_filter_offline_init(wtap *wth); + +void +wtap_filter_offline_clear(wtap *wth); |