Function bpfattach

freebsd/net/bpf.c:2669–2674

* Attach an interface to bpf. dlt is the link layer type; hdrlen is the * fixed size of the link header (variable length headers not yet supported). */

 * fixed size of the link header (variable length headers not yet supported).
 */
void
bpfattach(struct ifnet *ifp, u_int dlt, u_int hdrlen)
{

	bpfattach2(ifp, dlt, hdrlen, &ifp->if_bpf);
}

/*
 * Attach an interface to bpf.  ifp is a pointer to the structure