-static inline int ip_mkroute_input(struct sk_buff *skb,
- struct fib_result* res,
- const struct flowi *fl,
- struct in_device *in_dev,
- __be32 daddr, __be32 saddr, u32 tos)
-{
-#ifdef CONFIG_IP_ROUTE_MULTIPATH_CACHED
- struct rtable* rth = NULL, *rtres;
- unsigned char hop, hopcount;
- int err = -EINVAL;
- unsigned int hash;
-
- if (res->fi)
- hopcount = res->fi->fib_nhs;
- else
- hopcount = 1;
-
- /* distinguish between multipath and singlepath */
- if (hopcount < 2)
- return ip_mkroute_input_def(skb, res, fl, in_dev, daddr,
- saddr, tos);
-
- /* add all alternatives to the routing cache */
- for (hop = 0; hop < hopcount; hop++) {
- res->nh_sel = hop;
-
- /* put reference to previous result */
- if (hop)
- ip_rt_put(rtres);
-
- /* create a routing cache entry */
- err = __mkroute_input(skb, res, in_dev, daddr, saddr, tos,
- &rth);
- if (err)
- return err;
-
- /* put it into the cache */
- hash = rt_hash(daddr, saddr, fl->iif);
- err = rt_intern_hash(hash, rth, &rtres);
- if (err)
- return err;
-
- /* forward hop information to multipath impl. */
- multipath_set_nhinfo(rth,
- FIB_RES_NETWORK(*res),
- FIB_RES_NETMASK(*res),
- res->prefixlen,
- &FIB_RES_NH(*res));
- }
- skb->dst = &rtres->u.dst;
- return err;
-#else /* CONFIG_IP_ROUTE_MULTIPATH_CACHED */
- return ip_mkroute_input_def(skb, res, fl, in_dev, daddr, saddr, tos);
-#endif /* CONFIG_IP_ROUTE_MULTIPATH_CACHED */
-}
-
-