libnd_protocol 3 LIBNETDUDE Library libnd_protocol #define LND_PROTO_MAGICS enum LND_ProtocolLayer; LND_Protocol* libnd_proto_new (const char *name, LND_ProtocolLayer layer, guint32 magic); void libnd_proto_free (LND_Protocol *proto); gboolean libnd_proto_is_raw (LND_Protocol *proto); const char* libnd_proto_layer_to_string (LND_ProtocolLayer layer); LND_PROTO_MAGICS#define LND_PROTO_MAGICS 3 LND_ProtocolLayertypedef enum { LND_PROTO_LAYER_LINK = (1 << 0), LND_PROTO_LAYER_NET = (1 << 1), LND_PROTO_LAYER_TRANS = (1 << 2), LND_PROTO_LAYER_APP = (1 << 3) } LND_ProtocolLayer; libnd_proto_newLND_Protocol* libnd_proto_new (const char *name, LND_ProtocolLayer layer, guint32 magic); The function creates a new protocol with dummy operations hooked into the function pointers. Commonly used magic values are the DLT_xxx constants from bpf.h for the linklevel, ETHERTYPE_xxx for the network layer, IPPROTO_xxx for the transport layer, and ports as given in /etc/services for the application layer. name : name of the protocol. layer : layer in the network stack that the new protocol lives at. magic : the magic value by which the protocol is commonly identified by the layer below. Returns : new protocol, or NULL on error. libnd_proto_freevoid libnd_proto_free (LND_Protocol *proto); The function releases all memory associated with a protocol. proto : protocol to free. libnd_proto_is_rawgboolean libnd_proto_is_raw (LND_Protocol *proto); Use this function to determine whether a protocol is the built-in raw data protocol. proto : protocol to test. Returns : TRUE if proto is the raw protocol, FALSE otherwise. libnd_proto_layer_to_stringconst char* libnd_proto_layer_to_string (LND_ProtocolLayer layer); Mainly for debugging purposes, this function returns a statically allocated string for the protocol layer identifier given in layer. layer : layer identifier. Returns :