-module(bpf).

-export([open/1, write/2]).

start() ->
    erl_ddll:start(),
    ok = erl_ddll:load_driver(".", "bpf_drv").

open(Ifc) ->
    ok = start(),
    open_port({spawn, "bpf_drv "++Ifc}, [binary]).

write(Port, Packet) ->
    true = erlang:port_command(Port, Packet).