net/ipv4/route.c

1679 	int err;
1697 		err = fib_validate_source(skb, saddr, 0, tos, 0, dev,
1699 		if (err < 0)
1700 			return err;
1713 	int err;
1715 	err = ip_mc_validate_source(skb, daddr, saddr, tos, dev, in_dev, &itag);
1716 	if (err)
1717 		return err;
1783 	int err;
1795 	err = fib_validate_source(skb, saddr, daddr, tos, FIB_RES_OIF(*res),
1797 	if (err < 0) {
1805 	if (out_dev == in_dev && err && IN_DEV_TX_REDIRECTS(out_dev) &&
1825 			err = -EINVAL;
1848 		err = -ENOBUFS;
1862 	err = 0;
1864 	return err;
2152 	int err = -EINVAL;
2171 	err = fib_validate_source(skb, saddr, daddr, tos, 0, dev, in_dev, &tag);
2172 	if (err < 0)
2181 	return err;
2218 	int		err = -EINVAL;
2292 	err = fib_lookup(net, &fl4, res, 0);
2293 	if (err != 0) {
2295 			err = -EHOSTUNREACH;
2309 		err = fib_validate_source(skb, saddr, daddr, tos,
2311 		if (err < 0)
2317 		err = -EHOSTUNREACH;
2324 	err = ip_mkroute_input(skb, res, in_dev, daddr, saddr, tos, flkeys);
2325 out:	return err;
2332 		err = fib_validate_source(skb, saddr, 0, tos, 0, dev,
2334 		if (err < 0)
2352 			err = 0;
2371 		rth->dst.error= -err;
2389 	err = 0;
2411 	err = -EINVAL;
2415 	err = -ENOBUFS;
2441 		int err = -EINVAL;
2444 			return err;
2465 			err = ip_route_input_mc(skb, daddr, saddr,
2468 		return err;
2478 	int err;
2482 	err = ip_route_input_rcu(skb, daddr, saddr, tos, dev, &res);
2485 	return err;
2646 	int err;
2741 	err = fib_lookup(net, fl4, res, 0);
2742 	if (err) {
2771 		rth = ERR_PTR(err);
2984 				int err = ipmr_get_route(net, skb,
2988 				if (err <= 0) {
2989 					if (err == 0)
3026 			int err;
3044 			err = rt_fill_info(net, fnhe->fnhe_daddr, 0, rt,
3048 			if (err)
3049 				return err;
3068 		int err;
3075 		err = 0;
3077 			err = fnhe_dump_bucket(net, skb, cb, table_id, bucket,
3081 		if (err)
3082 			return err;
3155 	int i, err;
3183 	err = nlmsg_parse_deprecated_strict(nlh, sizeof(*rtm), tb, RTA_MAX,
3185 	if (err)
3186 		return err;
3235 	int err;
3238 	err = inet_rtm_valid_getroute_req(in_skb, nlh, tb, extack);
3239 	if (err < 0)
3240 		return err;
3253 		err = rtm_getroute_parse_ip_proto(tb[RTA_IP_PROTO],
3255 		if (err)
3256 			return err;
3288 			err = -ENODEV;
3295 		err = ip_route_input_rcu(skb, dst, src,
3300 		if (err == 0 && rt->dst.error)
3301 			err = -rt->dst.error;
3306 		err = 0;
3308 			err = PTR_ERR(rt);
3313 	if (err)
3332 			err = fib_props[res.type].error;
3333 			if (!err)
3334 				err = -EHOSTUNREACH;
3365 		err = fib_dump_info(skb, NETLINK_CB(in_skb).portid,
3368 		err = rt_fill_info(net, dst, src, rt, table_id, &fl4, skb,
3372 	if (err < 0)
3377 	err = rtnl_unicast(skb, net, NETLINK_CB(in_skb).portid);
3380 	return err;