Function nhgrp_get_group

freebsd/net/route/nhgrp_ctl.c:564–578

* Creates/finds nexthop group based on @wn and @num_nhops. * Returns 0 on success with referenced group in @rnd, or * errno. * * If the error is EAGAIN, then the operation can be retried. */

 * If the error is EAGAIN, then the operation can be retried.
 */
int
nhgrp_get_group(struct rib_head *rh, struct weightened_nhop *wn, int num_nhops,
    struct route_nhop_data *rnd)
{
	struct nh_control *ctl = rh->nh_control;
	struct nhgrp_priv *nhg_priv;
	int error;

	nhg_priv = get_nhgrp(ctl, wn, num_nhops, &error);
	if (nhg_priv != NULL)
		rnd->rnd_nhgrp = nhg_priv->nhg;
	rnd->rnd_weight = 0;

	return (error);
}

/*
 * Creates new nexthop group based on @src group with the nexthops defined in bitmask