diff options
Diffstat (limited to 'package/ppp/utils')
-rw-r--r-- | package/ppp/utils/pfc.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/package/ppp/utils/pfc.c b/package/ppp/utils/pfc.c new file mode 100644 index 000000000..5476be170 --- /dev/null +++ b/package/ppp/utils/pfc.c @@ -0,0 +1,51 @@ +/* + * Taken from fli4l 3.0 + * Make sure you compile it against the same libpcap version used in OpenWrt + */ + +#include <stdlib.h> +#include <sys/types.h> +#include <sys/time.h> +#include <string.h> + +#include <linux/types.h> +#include <linux/ppp_defs.h> + +#include <pcap.h> +#include <pcap-bpf.h> + +int main (int argc, char ** argv) +{ + pcap_t *pc; /* Fake struct pcap so we can compile expr */ + struct bpf_program filter; /* Filter program for link-active pkts */ + u_int32_t netmask=0; + + int dflag = 3; + if (argc == 4) + { + if (!strcmp (argv[1], "-d")) + { + dflag = atoi (argv[2]); + argv += 2; + argc -=2; + } + } + if (argc != 2) + { + printf ("usage; %s [ -d <debug_level> ] expression\n", argv[0]); + return 1; + } + + pc = pcap_open_dead(DLT_PPP_PPPD, PPP_HDRLEN); + if (pcap_compile(pc, &filter, argv[1], 1, netmask) == 0) + { + printf ("#\n# Expression: %s\n#\n", argv[1]); + bpf_dump (&filter, dflag); + return 0; + } + else + { + printf("error in active-filter expression: %s\n", pcap_geterr(pc)); + } + return 1; +} |