Function zbuf_free

freebsd/net/bpf_zerocopy.c:139–150

* Free a zbuf, including its page array, sbufs, and pages. Allow partially * allocated zbufs to be freed so that it may be used even during a zbuf * setup. */

 * setup.
 */
static void
zbuf_free(struct zbuf *zb)
{
	int i;

	for (i = 0; i < zb->zb_numpages; i++) {
		if (zb->zb_pages[i] != NULL)
			zbuf_sfbuf_free(zb->zb_pages[i]);
	}
	free(zb->zb_pages, M_BPF);
	free(zb, M_BPF);
}

/*
 * Given a user pointer to a page of user memory, return an sf_buf for the