M_NETGRAPH_TAG
hip = malloc(sizeof(*hip), M_NETGRAPH_TAG, M_NOWAIT | M_ZERO);
free(hip, M_NETGRAPH_TAG);
free(hip, M_NETGRAPH_TAG);
free(hip->in, M_NETGRAPH_TAG);
free(hip->out, M_NETGRAPH_TAG);
free(hip, M_NETGRAPH_TAG);
hp = malloc(size, M_NETGRAPH_TAG, M_WAITOK);
free(hip->in, M_NETGRAPH_TAG);
hp = malloc(size, M_NETGRAPH_TAG, M_WAITOK);
free(hip->out, M_NETGRAPH_TAG);
static MALLOC_DEFINE(M_NETGRAPH_TAG, "netgraph_tag", "netgraph tag node");