net/xfrm/xfrm_interface_core.c

146 #define for_each_xfrmi_rcu(start, xi) \
147 	for (xi = rcu_dereference(start); xi; xi = rcu_dereference(xi->next))
157 	struct xfrm_if *xi;
159 	for_each_xfrmi_rcu(xfrmn->xfrmi[xfrmi_hash(x->if_id)], xi) {
160 		if (x->if_id == xi->p.if_id &&
161 		    (xi->dev->flags & IFF_UP))
162 			return xi;
165 	xi = rcu_dereference(xfrmn->collect_md_xfrmi);
166 	if (xi && (xi->dev->flags & IFF_UP))
167 		return xi;
177 	struct xfrm_if *xi;
205 	xi = netdev_priv(dev);
206 	res->net = xi->net;
208 	if (xi->p.collect_md)
211 		res->if_id = xi->p.if_id;
215 static void xfrmi_link(struct xfrmi_net *xfrmn, struct xfrm_if *xi)
217 	struct xfrm_if __rcu **xip = &xfrmn->xfrmi[xfrmi_hash(xi->p.if_id)];
219 	rcu_assign_pointer(xi->next , rtnl_dereference(*xip));
220 	rcu_assign_pointer(*xip, xi);
223 static void xfrmi_unlink(struct xfrmi_net *xfrmn, struct xfrm_if *xi)
228 	for (xip = &xfrmn->xfrmi[xfrmi_hash(xi->p.if_id)];
231 		if (xi == iter) {
232 			rcu_assign_pointer(*xip, xi->next);
240 	struct xfrm_if *xi = netdev_priv(dev);
242 	gro_cells_destroy(&xi->gro_cells);
247 	struct xfrm_if *xi = netdev_priv(dev);
257 	if (xi->p.collect_md)
258 		rcu_assign_pointer(xfrmn->collect_md_xfrmi, xi);
260 		xfrmi_link(xfrmn, xi);
271 	struct xfrm_if *xi;
275 	     (xi = rtnl_dereference(*xip)) != NULL;
276 	     xip = &xi->next)
277 		if (xi->p.if_id == p->if_id)
278 			return xi;
285 	struct xfrm_if *xi = netdev_priv(dev);
286 	struct xfrmi_net *xfrmn = net_generic(xi->net, xfrmi_net_id);
288 	if (xi->p.collect_md)
291 		xfrmi_unlink(xfrmn, xi);
364 	struct xfrm_if *xi;
373 	xi = xfrmi_lookup(xs_net(x), x);
374 	if (!xi)
378 	dev = xi->dev;
388 	xnet = !net_eq(xi->net, dev_net(skb->dev));
408 	if (xi->p.collect_md) {
427 	struct xfrm_if *xi = netdev_priv(dev);
436 	if (xi->p.collect_md) {
453 		if_id = xi->p.if_id;
457 	dst = xfrm_lookup_with_ifid(xi->net, dst, fl, NULL, 0, if_id);
505 	xfrmi_scrub_packet(skb, !net_eq(xi->net, dev_net(dev)));
509 	err = dst_output(xi->net, skb->sk, skb);
528 	struct xfrm_if *xi = netdev_priv(dev);
571 	fl.flowi_oif = xi->p.link;
595 	struct xfrm_if *xi;
631 	xi = xfrmi_lookup(net, x);
632 	if (!xi) {
656 	struct xfrm_if *xi;
685 	xi = xfrmi_lookup(net, x);
686 	if (!xi) {
701 static int xfrmi_change(struct xfrm_if *xi, const struct xfrm_if_parms *p)
703 	if (xi->p.link != p->link)
706 	xi->p.if_id = p->if_id;
711 static int xfrmi_update(struct xfrm_if *xi, struct xfrm_if_parms *p)
713 	struct net *net = xi->net;
717 	xfrmi_unlink(xfrmn, xi);
719 	err = xfrmi_change(xi, p);
720 	xfrmi_link(xfrmn, xi);
721 	netdev_state_change(xi->dev);
727 	struct xfrm_if *xi = netdev_priv(dev);
729 	return READ_ONCE(xi->p.link);
764 	struct xfrm_if *xi = netdev_priv(dev);
765 	struct net_device *phydev = __dev_get_by_index(xi->net, xi->p.link);
768 	err = gro_cells_init(&xi->gro_cells, dev);
823 	struct xfrm_if *xi;
844 		xi = xfrmi_locate(net, &p);
845 		if (xi)
849 	xi = netdev_priv(dev);
850 	xi->p = p;
851 	xi->net = net;
852 	xi->dev = dev;
867 	struct xfrm_if *xi = netdev_priv(dev);
868 	struct net *net = xi->net;
882 	xi = xfrmi_locate(net, &p);
883 	if (!xi) {
884 		xi = netdev_priv(dev);
886 		if (xi->dev != dev)
888 		if (xi->p.collect_md) {
895 	return xfrmi_update(xi, &p);
912 	struct xfrm_if *xi = netdev_priv(dev);
913 	struct xfrm_if_parms *parm = &xi->p;
917 	    (xi->p.collect_md && nla_put_flag(skb, IFLA_XFRM_COLLECT_METADATA)))
927 	struct xfrm_if *xi = netdev_priv(dev);
929 	return xi->net;
963 		struct xfrm_if *xi;
968 			     (xi = rtnl_dereference(*xip)) != NULL;
969 			     xip = &xi->next)
970 				unregister_netdevice_queue(xi->dev, dev_to_kill);
972 		xi = rtnl_dereference(xfrmn->collect_md_xfrmi);
973 		if (xi)
974 			unregister_netdevice_queue(xi->dev, dev_to_kill);