[IPv6] route: FIB6 configuration using struct fib6_config

Replaces the struct in6_rtmsg based interface orignating from
the ioctl interface with a struct fib6_config based on. Allows
changing the interface without breaking the ioctl interface
and avoids passing on tons of parameters.

The recently introduced struct nl_info is used to pass on
netlink authorship information for notifications.

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

5 files changed, 259 insertions, 200 deletions

diff --git a/include/net/ip6_fib.h b/include/net/ip6_fib.h
index 69c444209781..9610b887ffb5 100644
--- a/include/net/ip6_fib.h
+++ b/include/net/ip6_fib.h
@@ -16,14 +16,35 @@
 #ifdef __KERNEL__
 
 #include <linux/ipv6_route.h>
-
-#include <net/dst.h>
-#include <net/flow.h>
 #include <linux/rtnetlink.h>
 #include <linux/spinlock.h>
+#include <net/dst.h>
+#include <net/flow.h>
+#include <net/netlink.h>
 
 struct rt6_info;
 
+struct fib6_config
+{
+        u32             fc_table;
+        u32             fc_metric;
+        int             fc_dst_len;
+        int             fc_src_len;
+        int             fc_ifindex;
+        u32             fc_flags;
+        u32             fc_protocol;
+
+        struct in6_addr fc_dst;
+        struct in6_addr fc_src;
+        struct in6_addr fc_gateway;
+
+        unsigned long   fc_expires;
+        struct nlattr   *fc_mx;
+        int             fc_mx_len;
+
+        struct nl_info  fc_nlinfo;
+};
+
 struct fib6_node
 {
         struct fib6_node        *parent;
@@ -175,18 +196,13 @@ extern void			fib6_clean_all(int (*func)(struct rt6_info *, void *arg),
 
 extern int                      fib6_add(struct fib6_node *root,
                                          struct rt6_info *rt,
-                                         struct nlmsghdr *nlh,
-                                         void *rtattr,
-                                         struct netlink_skb_parms *req);
+                                         struct nl_info *info);
 
 extern int                      fib6_del(struct rt6_info *rt,
-                                         struct nlmsghdr *nlh,
-                                         void *rtattr,
-                                         struct netlink_skb_parms *req);
+                                         struct nl_info *info);
 
 extern void                     inet6_rt_notify(int event, struct rt6_info *rt,
-                                                struct nlmsghdr *nlh,
-                                                struct netlink_skb_parms *req);
+                                                struct nl_info *info);
 
 extern void                     fib6_run_gc(unsigned long dummy);
 
diff --git a/include/net/ip6_route.h b/include/net/ip6_route.h
index 172c4761e2bf..3f170f667c7b 100644
--- a/include/net/ip6_route.h
+++ b/include/net/ip6_route.h
@@ -60,11 +60,7 @@ extern void			ip6_route_cleanup(void);
 
 extern int                      ipv6_route_ioctl(unsigned int cmd, void __user *arg);
 
-extern int                      ip6_route_add(struct in6_rtmsg *rtmsg,
-                                              struct nlmsghdr *,
-                                              void *rtattr,
-                                              struct netlink_skb_parms *req,
-                                              u32 table_id);
+extern int                      ip6_route_add(struct fib6_config *cfg);
 extern int                      ip6_ins_rt(struct rt6_info *);
 extern int                      ip6_del_rt(struct rt6_info *);
 
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index aafba9ea9cb6..fc9cff3426c4 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -1509,59 +1509,56 @@ static void
 addrconf_prefix_route(struct in6_addr *pfx, int plen, struct net_device *dev,
                       unsigned long expires, u32 flags)
 {
-        struct in6_rtmsg rtmsg;
+        struct fib6_config cfg = {
+                .fc_table = RT6_TABLE_PREFIX,
+                .fc_metric = IP6_RT_PRIO_ADDRCONF,
+                .fc_ifindex = dev->ifindex,
+                .fc_expires = expires,
+                .fc_dst_len = plen,
+                .fc_flags = RTF_UP | flags,
+        };
 
-        memset(&rtmsg, 0, sizeof(rtmsg));
-        ipv6_addr_copy(&rtmsg.rtmsg_dst, pfx);
-        rtmsg.rtmsg_dst_len = plen;
-        rtmsg.rtmsg_metric = IP6_RT_PRIO_ADDRCONF;
-        rtmsg.rtmsg_ifindex = dev->ifindex;
-        rtmsg.rtmsg_info = expires;
-        rtmsg.rtmsg_flags = RTF_UP|flags;
-        rtmsg.rtmsg_type = RTMSG_NEWROUTE;
+        ipv6_addr_copy(&cfg.fc_dst, pfx);
 
         /* Prevent useless cloning on PtP SIT.
            This thing is done here expecting that the whole
            class of non-broadcast devices need not cloning.
          */
-        if (dev->type == ARPHRD_SIT && (dev->flags&IFF_POINTOPOINT))
-                rtmsg.rtmsg_flags |= RTF_NONEXTHOP;
+        if (dev->type == ARPHRD_SIT && (dev->flags & IFF_POINTOPOINT))
+                cfg.fc_flags |= RTF_NONEXTHOP;
 
-        ip6_route_add(&rtmsg, NULL, NULL, NULL, RT6_TABLE_PREFIX);
+        ip6_route_add(&cfg);
 }
 
 /* Create "default" multicast route to the interface */
 
 static void addrconf_add_mroute(struct net_device *dev)
 {
-        struct in6_rtmsg rtmsg;
-
-        memset(&rtmsg, 0, sizeof(rtmsg));
-        ipv6_addr_set(&rtmsg.rtmsg_dst,
-                      htonl(0xFF000000), 0, 0, 0);
-        rtmsg.rtmsg_dst_len = 8;
-        rtmsg.rtmsg_metric = IP6_RT_PRIO_ADDRCONF;
-        rtmsg.rtmsg_ifindex = dev->ifindex;
-        rtmsg.rtmsg_flags = RTF_UP;
-        rtmsg.rtmsg_type = RTMSG_NEWROUTE;
-        ip6_route_add(&rtmsg, NULL, NULL, NULL, RT6_TABLE_LOCAL);
+        struct fib6_config cfg = {
+                .fc_table = RT6_TABLE_LOCAL,
+                .fc_metric = IP6_RT_PRIO_ADDRCONF,
+                .fc_ifindex = dev->ifindex,
+                .fc_dst_len = 8,
+                .fc_flags = RTF_UP,
+        };
+
+        ipv6_addr_set(&cfg.fc_dst, htonl(0xFF000000), 0, 0, 0);
+
+        ip6_route_add(&cfg);
 }
 
 static void sit_route_add(struct net_device *dev)
 {
-        struct in6_rtmsg rtmsg;
-
-        memset(&rtmsg, 0, sizeof(rtmsg));
-
-        rtmsg.rtmsg_type        = RTMSG_NEWROUTE;
-        rtmsg.rtmsg_metric      = IP6_RT_PRIO_ADDRCONF;
+        struct fib6_config cfg = {
+                .fc_table = RT6_TABLE_MAIN,
+                .fc_metric = IP6_RT_PRIO_ADDRCONF,
+                .fc_ifindex = dev->ifindex,
+                .fc_dst_len = 96,
+                .fc_flags = RTF_UP | RTF_NONEXTHOP,
+        };
 
         /* prefix length - 96 bits "::d.d.d.d" */
-        rtmsg.rtmsg_dst_len     = 96;
-        rtmsg.rtmsg_flags       = RTF_UP|RTF_NONEXTHOP;
-        rtmsg.rtmsg_ifindex     = dev->ifindex;
-
-        ip6_route_add(&rtmsg, NULL, NULL, NULL, RT6_TABLE_MAIN);
+        ip6_route_add(&cfg);
 }
 
 static void addrconf_add_lroute(struct net_device *dev)
diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c
index be36f4acda94..667b1b1ea25d 100644
--- a/net/ipv6/ip6_fib.c
+++ b/net/ipv6/ip6_fib.c
@@ -610,7 +610,7 @@ insert_above:
  */
 
 static int fib6_add_rt2node(struct fib6_node *fn, struct rt6_info *rt,
-                struct nlmsghdr *nlh,  struct netlink_skb_parms *req)
+                            struct nl_info *info)
 {
         struct rt6_info *iter = NULL;
         struct rt6_info **ins;
@@ -665,7 +665,7 @@ out:
         *ins = rt;
         rt->rt6i_node = fn;
         atomic_inc(&rt->rt6i_ref);
-        inet6_rt_notify(RTM_NEWROUTE, rt, nlh, req);
+        inet6_rt_notify(RTM_NEWROUTE, rt, info);
         rt6_stats.fib_rt_entries++;
 
         if ((fn->fn_flags & RTN_RTINFO) == 0) {
@@ -695,8 +695,7 @@ void fib6_force_start_gc(void)
  *      with source addr info in sub-trees
  */
 
-int fib6_add(struct fib6_node *root, struct rt6_info *rt, 
-                struct nlmsghdr *nlh, void *_rtattr, struct netlink_skb_parms *req)
+int fib6_add(struct fib6_node *root, struct rt6_info *rt, struct nl_info *info)
 {
         struct fib6_node *fn;
         int err = -ENOMEM;
@@ -769,7 +768,7 @@ int fib6_add(struct fib6_node *root, struct rt6_info *rt,
         }
 #endif
 
-        err = fib6_add_rt2node(fn, rt, nlh, req);
+        err = fib6_add_rt2node(fn, rt, info);
 
         if (err == 0) {
                 fib6_start_gc(rt);
@@ -1076,7 +1075,7 @@ static struct fib6_node * fib6_repair_tree(struct fib6_node *fn)
 }
 
 static void fib6_del_route(struct fib6_node *fn, struct rt6_info **rtp,
-    struct nlmsghdr *nlh, void *_rtattr, struct netlink_skb_parms *req)
+                           struct nl_info *info)
 {
         struct fib6_walker_t *w;
         struct rt6_info *rt = *rtp;
@@ -1132,11 +1131,11 @@ static void fib6_del_route(struct fib6_node *fn, struct rt6_info **rtp,
                 if (atomic_read(&rt->rt6i_ref) != 1) BUG();
         }
 
-        inet6_rt_notify(RTM_DELROUTE, rt, nlh, req);
+        inet6_rt_notify(RTM_DELROUTE, rt, info);
         rt6_release(rt);
 }
 
-int fib6_del(struct rt6_info *rt, struct nlmsghdr *nlh, void *_rtattr, struct netlink_skb_parms *req)
+int fib6_del(struct rt6_info *rt, struct nl_info *info)
 {
         struct fib6_node *fn = rt->rt6i_node;
         struct rt6_info **rtp;
@@ -1161,7 +1160,7 @@ int fib6_del(struct rt6_info *rt, struct nlmsghdr *nlh, void *_rtattr, struct ne
 
         for (rtp = &fn->leaf; *rtp; rtp = &(*rtp)->u.next) {
                 if (*rtp == rt) {
-                        fib6_del_route(fn, rtp, nlh, _rtattr, req);
+                        fib6_del_route(fn, rtp, info);
                         return 0;
                 }
         }
@@ -1290,7 +1289,7 @@ static int fib6_clean_node(struct fib6_walker_t *w)
                 res = c->func(rt, c->arg);
                 if (res < 0) {
                         w->leaf = rt;
-                        res = fib6_del(rt, NULL, NULL, NULL);
+                        res = fib6_del(rt, NULL);
                         if (res) {
 #if RT6_DEBUG >= 2
                                 printk(KERN_DEBUG "fib6_clean_node: del failed: rt=%p@%p err=%d\n", rt, rt->rt6i_node, res);
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 9ec348a72a95..7bcffa6ddba3 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -546,15 +546,14 @@ struct rt6_info *rt6_lookup(struct in6_addr *daddr, struct in6_addr *saddr,
    be destroyed.
  */
 
-static int __ip6_ins_rt(struct rt6_info *rt, struct nlmsghdr *nlh,
-                        void *_rtattr, struct netlink_skb_parms *req)
+static int __ip6_ins_rt(struct rt6_info *rt, struct nl_info *info)
 {
         int err;
         struct fib6_table *table;
 
         table = rt->rt6i_table;
         write_lock_bh(&table->tb6_lock);
-        err = fib6_add(&table->tb6_root, rt, nlh, _rtattr, req);
+        err = fib6_add(&table->tb6_root, rt, info);
         write_unlock_bh(&table->tb6_lock);
 
         return err;
@@ -562,7 +561,7 @@ static int __ip6_ins_rt(struct rt6_info *rt, struct nlmsghdr *nlh,
 
 int ip6_ins_rt(struct rt6_info *rt)
 {
-        return __ip6_ins_rt(rt, NULL, NULL, NULL);
+        return __ip6_ins_rt(rt, NULL);
 }
 
 static struct rt6_info *rt6_alloc_cow(struct rt6_info *ort, struct in6_addr *daddr,
@@ -1014,30 +1013,24 @@ int ipv6_get_hoplimit(struct net_device *dev)
  *
  */
 
-int ip6_route_add(struct in6_rtmsg *rtmsg, struct nlmsghdr *nlh, 
-                  void *_rtattr, struct netlink_skb_parms *req,
-                  u32 table_id)
+int ip6_route_add(struct fib6_config *cfg)
 {
         int err;
-        struct rtmsg *r;
-        struct rtattr **rta;
         struct rt6_info *rt = NULL;
         struct net_device *dev = NULL;
         struct inet6_dev *idev = NULL;
         struct fib6_table *table;
         int addr_type;
 
-        rta = (struct rtattr **) _rtattr;
-
-        if (rtmsg->rtmsg_dst_len > 128 || rtmsg->rtmsg_src_len > 128)
+        if (cfg->fc_dst_len > 128 || cfg->fc_src_len > 128)
                 return -EINVAL;
 #ifndef CONFIG_IPV6_SUBTREES
-        if (rtmsg->rtmsg_src_len)
+        if (cfg->fc_src_len)
                 return -EINVAL;
 #endif
-        if (rtmsg->rtmsg_ifindex) {
+        if (cfg->fc_ifindex) {
                 err = -ENODEV;
-                dev = dev_get_by_index(rtmsg->rtmsg_ifindex);
+                dev = dev_get_by_index(cfg->fc_ifindex);
                 if (!dev)
                         goto out;
                 idev = in6_dev_get(dev);
@@ -1045,10 +1038,10 @@ int ip6_route_add(struct in6_rtmsg *rtmsg, struct nlmsghdr *nlh,
                         goto out;
         }
 
-        if (rtmsg->rtmsg_metric == 0)
-                rtmsg->rtmsg_metric = IP6_RT_PRIO_USER;
+        if (cfg->fc_metric == 0)
+                cfg->fc_metric = IP6_RT_PRIO_USER;
 
-        table = fib6_new_table(table_id);
+        table = fib6_new_table(cfg->fc_table);
         if (table == NULL) {
                 err = -ENOBUFS;
                 goto out;
@@ -1062,14 +1055,13 @@ int ip6_route_add(struct in6_rtmsg *rtmsg, struct nlmsghdr *nlh,
         }
 
         rt->u.dst.obsolete = -1;
-        rt->rt6i_expires = jiffies + clock_t_to_jiffies(rtmsg->rtmsg_info);
-        if (nlh && (r = NLMSG_DATA(nlh))) {
-                rt->rt6i_protocol = r->rtm_protocol;
-        } else {
-                rt->rt6i_protocol = RTPROT_BOOT;
-        }
+        rt->rt6i_expires = jiffies + clock_t_to_jiffies(cfg->fc_expires);
+
+        if (cfg->fc_protocol == RTPROT_UNSPEC)
+                cfg->fc_protocol = RTPROT_BOOT;
+        rt->rt6i_protocol = cfg->fc_protocol;
 
-        addr_type = ipv6_addr_type(&rtmsg->rtmsg_dst);
+        addr_type = ipv6_addr_type(&cfg->fc_dst);
 
         if (addr_type & IPV6_ADDR_MULTICAST)
                 rt->u.dst.input = ip6_mc_input;
@@ -1078,24 +1070,22 @@ int ip6_route_add(struct in6_rtmsg *rtmsg, struct nlmsghdr *nlh,
 
         rt->u.dst.output = ip6_output;
 
-        ipv6_addr_prefix(&rt->rt6i_dst.addr, 
-                         &rtmsg->rtmsg_dst, rtmsg->rtmsg_dst_len);
-        rt->rt6i_dst.plen = rtmsg->rtmsg_dst_len;
+        ipv6_addr_prefix(&rt->rt6i_dst.addr, &cfg->fc_dst, cfg->fc_dst_len);
+        rt->rt6i_dst.plen = cfg->fc_dst_len;
         if (rt->rt6i_dst.plen == 128)
                rt->u.dst.flags = DST_HOST;
 
 #ifdef CONFIG_IPV6_SUBTREES
-        ipv6_addr_prefix(&rt->rt6i_src.addr, 
-                         &rtmsg->rtmsg_src, rtmsg->rtmsg_src_len);
-        rt->rt6i_src.plen = rtmsg->rtmsg_src_len;
+        ipv6_addr_prefix(&rt->rt6i_src.addr, &cfg->fc_src, cfg->fc_src_len);
+        rt->rt6i_src.plen = cfg->fc_src_len;
 #endif
 
-        rt->rt6i_metric = rtmsg->rtmsg_metric;
+        rt->rt6i_metric = cfg->fc_metric;
 
         /* We cannot add true routes via loopback here,
            they would result in kernel looping; promote them to reject routes
          */
-        if ((rtmsg->rtmsg_flags&RTF_REJECT) ||
+        if ((cfg->fc_flags & RTF_REJECT) ||
             (dev && (dev->flags&IFF_LOOPBACK) && !(addr_type&IPV6_ADDR_LOOPBACK))) {
                 /* hold loopback dev/idev if we haven't done so. */
                 if (dev != &loopback_dev) {
@@ -1118,12 +1108,12 @@ int ip6_route_add(struct in6_rtmsg *rtmsg, struct nlmsghdr *nlh,
                 goto install_route;
         }
 
-        if (rtmsg->rtmsg_flags & RTF_GATEWAY) {
+        if (cfg->fc_flags & RTF_GATEWAY) {
                 struct in6_addr *gw_addr;
                 int gwa_type;
 
-                gw_addr = &rtmsg->rtmsg_gateway;
-                ipv6_addr_copy(&rt->rt6i_gateway, &rtmsg->rtmsg_gateway);
+                gw_addr = &cfg->fc_gateway;
+                ipv6_addr_copy(&rt->rt6i_gateway, gw_addr);
                 gwa_type = ipv6_addr_type(gw_addr);
 
                 if (gwa_type != (IPV6_ADDR_LINKLOCAL|IPV6_ADDR_UNICAST)) {
@@ -1140,7 +1130,7 @@ int ip6_route_add(struct in6_rtmsg *rtmsg, struct nlmsghdr *nlh,
                         if (!(gwa_type&IPV6_ADDR_UNICAST))
                                 goto out;
 
-                        grt = rt6_lookup(gw_addr, NULL, rtmsg->rtmsg_ifindex, 1);
+                        grt = rt6_lookup(gw_addr, NULL, cfg->fc_ifindex, 1);
 
                         err = -EHOSTUNREACH;
                         if (grt == NULL)
@@ -1172,7 +1162,7 @@ int ip6_route_add(struct in6_rtmsg *rtmsg, struct nlmsghdr *nlh,
         if (dev == NULL)
                 goto out;
 
-        if (rtmsg->rtmsg_flags & (RTF_GATEWAY|RTF_NONEXTHOP)) {
+        if (cfg->fc_flags & (RTF_GATEWAY | RTF_NONEXTHOP)) {
                 rt->rt6i_nexthop = __neigh_lookup_errno(&nd_tbl, &rt->rt6i_gateway, dev);
                 if (IS_ERR(rt->rt6i_nexthop)) {
                         err = PTR_ERR(rt->rt6i_nexthop);
@@ -1181,24 +1171,24 @@ int ip6_route_add(struct in6_rtmsg *rtmsg, struct nlmsghdr *nlh,
                 }
         }
 
-        rt->rt6i_flags = rtmsg->rtmsg_flags;
+        rt->rt6i_flags = cfg->fc_flags;
 
 install_route:
-        if (rta && rta[RTA_METRICS-1]) {
-                int attrlen = RTA_PAYLOAD(rta[RTA_METRICS-1]);
-                struct rtattr *attr = RTA_DATA(rta[RTA_METRICS-1]);
-
-                while (RTA_OK(attr, attrlen)) {
-                        unsigned flavor = attr->rta_type;
-                        if (flavor) {
-                                if (flavor > RTAX_MAX) {
+        if (cfg->fc_mx) {
+                struct nlattr *nla;
+                int remaining;
+
+                nla_for_each_attr(nla, cfg->fc_mx, cfg->fc_mx_len, remaining) {
+                        int type = nla->nla_type;
+
+                        if (type) {
+                                if (type > RTAX_MAX) {
                                         err = -EINVAL;
                                         goto out;
                                 }
-                                rt->u.dst.metrics[flavor-1] =
-                                        *(u32 *)RTA_DATA(attr);
+
+                                rt->u.dst.metrics[type - 1] = nla_get_u32(nla);
                         }
-                        attr = RTA_NEXT(attr, attrlen);
                 }
         }
 
@@ -1211,7 +1201,7 @@ install_route:
         rt->u.dst.dev = dev;
         rt->rt6i_idev = idev;
         rt->rt6i_table = table;
-        return __ip6_ins_rt(rt, nlh, _rtattr, req);
+        return __ip6_ins_rt(rt, &cfg->fc_nlinfo);
 
 out:
         if (dev)
@@ -1223,8 +1213,7 @@ out:
         return err;
 }
 
-static int __ip6_del_rt(struct rt6_info *rt, struct nlmsghdr *nlh,
-                        void *_rtattr, struct netlink_skb_parms *req)
+static int __ip6_del_rt(struct rt6_info *rt, struct nl_info *info)
 {
         int err;
         struct fib6_table *table;
@@ -1235,7 +1224,7 @@ static int __ip6_del_rt(struct rt6_info *rt, struct nlmsghdr *nlh,
         table = rt->rt6i_table;
         write_lock_bh(&table->tb6_lock);
 
-        err = fib6_del(rt, nlh, _rtattr, req);
+        err = fib6_del(rt, info);
         dst_release(&rt->u.dst);
 
         write_unlock_bh(&table->tb6_lock);
@@ -1245,44 +1234,41 @@ static int __ip6_del_rt(struct rt6_info *rt, struct nlmsghdr *nlh,
 
 int ip6_del_rt(struct rt6_info *rt)
 {
-        return __ip6_del_rt(rt, NULL, NULL, NULL);
+        return __ip6_del_rt(rt, NULL);
 }
 
-static int ip6_route_del(struct in6_rtmsg *rtmsg, struct nlmsghdr *nlh,
-                         void *_rtattr, struct netlink_skb_parms *req,
-                         u32 table_id)
+static int ip6_route_del(struct fib6_config *cfg)
 {
         struct fib6_table *table;
         struct fib6_node *fn;
         struct rt6_info *rt;
         int err = -ESRCH;
 
-        table = fib6_get_table(table_id);
+        table = fib6_get_table(cfg->fc_table);
         if (table == NULL)
                 return err;
 
         read_lock_bh(&table->tb6_lock);
 
         fn = fib6_locate(&table->tb6_root,
-                         &rtmsg->rtmsg_dst, rtmsg->rtmsg_dst_len,
-                         &rtmsg->rtmsg_src, rtmsg->rtmsg_src_len);
+                         &cfg->fc_dst, cfg->fc_dst_len,
+                         &cfg->fc_src, cfg->fc_src_len);
         
         if (fn) {
                 for (rt = fn->leaf; rt; rt = rt->u.next) {
-                        if (rtmsg->rtmsg_ifindex &&
+                        if (cfg->fc_ifindex &&
                             (rt->rt6i_dev == NULL ||
-                             rt->rt6i_dev->ifindex != rtmsg->rtmsg_ifindex))
+                             rt->rt6i_dev->ifindex != cfg->fc_ifindex))
                                 continue;
-                        if (rtmsg->rtmsg_flags&RTF_GATEWAY &&
-                            !ipv6_addr_equal(&rtmsg->rtmsg_gateway, &rt->rt6i_gateway))
+                        if (cfg->fc_flags & RTF_GATEWAY &&
+                            !ipv6_addr_equal(&cfg->fc_gateway, &rt->rt6i_gateway))
                                 continue;
-                        if (rtmsg->rtmsg_metric &&
-                            rtmsg->rtmsg_metric != rt->rt6i_metric)
+                        if (cfg->fc_metric && cfg->fc_metric != rt->rt6i_metric)
                                 continue;
                         dst_hold(&rt->u.dst);
                         read_unlock_bh(&table->tb6_lock);
 
-                        return __ip6_del_rt(rt, nlh, _rtattr, req);
+                        return __ip6_del_rt(rt, &cfg->fc_nlinfo);
                 }
         }
         read_unlock_bh(&table->tb6_lock);
@@ -1565,21 +1551,23 @@ static struct rt6_info *rt6_add_route_info(struct in6_addr *prefix, int prefixle
                                            struct in6_addr *gwaddr, int ifindex,
                                            unsigned pref)
 {
-        struct in6_rtmsg rtmsg;
+        struct fib6_config cfg = {
+                .fc_table       = RT6_TABLE_INFO,
+                .fc_metric      = 1024,
+                .fc_ifindex     = ifindex,
+                .fc_dst_len     = prefixlen,
+                .fc_flags       = RTF_GATEWAY | RTF_ADDRCONF | RTF_ROUTEINFO |
+                                  RTF_UP | RTF_PREF(pref),
+        };
+
+        ipv6_addr_copy(&cfg.fc_dst, prefix);
+        ipv6_addr_copy(&cfg.fc_gateway, gwaddr);
 
-        memset(&rtmsg, 0, sizeof(rtmsg));
-        rtmsg.rtmsg_type = RTMSG_NEWROUTE;
-        ipv6_addr_copy(&rtmsg.rtmsg_dst, prefix);
-        rtmsg.rtmsg_dst_len = prefixlen;
-        ipv6_addr_copy(&rtmsg.rtmsg_gateway, gwaddr);
-        rtmsg.rtmsg_metric = 1024;
-        rtmsg.rtmsg_flags = RTF_GATEWAY | RTF_ADDRCONF | RTF_ROUTEINFO | RTF_UP | RTF_PREF(pref);
         /* We should treat it as a default route if prefix length is 0. */
         if (!prefixlen)
-                rtmsg.rtmsg_flags |= RTF_DEFAULT;
-        rtmsg.rtmsg_ifindex = ifindex;
+                cfg.fc_flags |= RTF_DEFAULT;
 
-        ip6_route_add(&rtmsg, NULL, NULL, NULL, RT6_TABLE_INFO);
+        ip6_route_add(&cfg);
 
         return rt6_get_route_info(prefix, prefixlen, gwaddr, ifindex);
 }
@@ -1611,18 +1599,18 @@ struct rt6_info *rt6_add_dflt_router(struct in6_addr *gwaddr,
                                      struct net_device *dev,
                                      unsigned int pref)
 {
-        struct in6_rtmsg rtmsg;
+        struct fib6_config cfg = {
+                .fc_table       = RT6_TABLE_DFLT,
+                .fc_metric      = 1024,
+                .fc_ifindex     = dev->ifindex,
+                .fc_flags       = RTF_GATEWAY | RTF_ADDRCONF | RTF_DEFAULT |
+                                  RTF_UP | RTF_EXPIRES | RTF_PREF(pref),
+        };
 
-        memset(&rtmsg, 0, sizeof(struct in6_rtmsg));
-        rtmsg.rtmsg_type = RTMSG_NEWROUTE;
-        ipv6_addr_copy(&rtmsg.rtmsg_gateway, gwaddr);
-        rtmsg.rtmsg_metric = 1024;
-        rtmsg.rtmsg_flags = RTF_GATEWAY | RTF_ADDRCONF | RTF_DEFAULT | RTF_UP | RTF_EXPIRES |
-                            RTF_PREF(pref);
+        ipv6_addr_copy(&cfg.fc_gateway, gwaddr);
 
-        rtmsg.rtmsg_ifindex = dev->ifindex;
+        ip6_route_add(&cfg);
 
-        ip6_route_add(&rtmsg, NULL, NULL, NULL, RT6_TABLE_DFLT);
         return rt6_get_dflt_router(gwaddr, dev);
 }
 
@@ -1649,8 +1637,27 @@ restart:
         read_unlock_bh(&table->tb6_lock);
 }
 
+static void rtmsg_to_fib6_config(struct in6_rtmsg *rtmsg,
+                                 struct fib6_config *cfg)
+{
+        memset(cfg, 0, sizeof(*cfg));
+
+        cfg->fc_table = RT6_TABLE_MAIN;
+        cfg->fc_ifindex = rtmsg->rtmsg_ifindex;
+        cfg->fc_metric = rtmsg->rtmsg_metric;
+        cfg->fc_expires = rtmsg->rtmsg_info;
+        cfg->fc_dst_len = rtmsg->rtmsg_dst_len;
+        cfg->fc_src_len = rtmsg->rtmsg_src_len;
+        cfg->fc_flags = rtmsg->rtmsg_flags;
+
+        ipv6_addr_copy(&cfg->fc_dst, &rtmsg->rtmsg_dst);
+        ipv6_addr_copy(&cfg->fc_src, &rtmsg->rtmsg_src);
+        ipv6_addr_copy(&cfg->fc_gateway, &rtmsg->rtmsg_gateway);
+}
+
 int ipv6_route_ioctl(unsigned int cmd, void __user *arg)
 {
+        struct fib6_config cfg;
         struct in6_rtmsg rtmsg;
         int err;
 
@@ -1663,16 +1670,16 @@ int ipv6_route_ioctl(unsigned int cmd, void __user *arg)
                                      sizeof(struct in6_rtmsg));
                 if (err)
                         return -EFAULT;
-                        
+
+                rtmsg_to_fib6_config(&rtmsg, &cfg);
+
                 rtnl_lock();
                 switch (cmd) {
                 case SIOCADDRT:
-                        err = ip6_route_add(&rtmsg, NULL, NULL, NULL,
-                                            RT6_TABLE_MAIN);
+                        err = ip6_route_add(&cfg);
                         break;
                 case SIOCDELRT:
-                        err = ip6_route_del(&rtmsg, NULL, NULL, NULL,
-                                            RT6_TABLE_MAIN);
+                        err = ip6_route_del(&cfg);
                         break;
                 default:
                         err = -EINVAL;
@@ -1823,66 +1830,104 @@ void rt6_mtu_change(struct net_device *dev, unsigned mtu)
         fib6_clean_all(rt6_mtu_change_route, 0, &arg);
 }
 
-static int inet6_rtm_to_rtmsg(struct rtmsg *r, struct rtattr **rta,
-                              struct in6_rtmsg *rtmsg)
+static struct nla_policy rtm_ipv6_policy[RTA_MAX+1] __read_mostly = {
+        [RTA_GATEWAY]           = { .minlen = sizeof(struct in6_addr) },
+        [RTA_OIF]               = { .type = NLA_U32 },
+        [RTA_PRIORITY]          = { .type = NLA_U32 },
+        [RTA_METRICS]           = { .type = NLA_NESTED },
+};
+
+static int rtm_to_fib6_config(struct sk_buff *skb, struct nlmsghdr *nlh,
+                              struct fib6_config *cfg)
 {
-        memset(rtmsg, 0, sizeof(*rtmsg));
+        struct rtmsg *rtm;
+        struct nlattr *tb[RTA_MAX+1];
+        int err;
+
+        err = nlmsg_parse(nlh, sizeof(*rtm), tb, RTA_MAX, rtm_ipv6_policy);
+        if (err < 0)
+                goto errout;
 
-        rtmsg->rtmsg_dst_len = r->rtm_dst_len;
-        rtmsg->rtmsg_src_len = r->rtm_src_len;
-        rtmsg->rtmsg_flags = RTF_UP;
-        if (r->rtm_type == RTN_UNREACHABLE)
-                rtmsg->rtmsg_flags |= RTF_REJECT;
+        err = -EINVAL;
+        rtm = nlmsg_data(nlh);
+        memset(cfg, 0, sizeof(*cfg));
 
-        if (rta[RTA_GATEWAY-1]) {
-                if (rta[RTA_GATEWAY-1]->rta_len != RTA_LENGTH(16))
-                        return -EINVAL;
-                memcpy(&rtmsg->rtmsg_gateway, RTA_DATA(rta[RTA_GATEWAY-1]), 16);
-                rtmsg->rtmsg_flags |= RTF_GATEWAY;
-        }
-        if (rta[RTA_DST-1]) {
-                if (RTA_PAYLOAD(rta[RTA_DST-1]) < ((r->rtm_dst_len+7)>>3))
-                        return -EINVAL;
-                memcpy(&rtmsg->rtmsg_dst, RTA_DATA(rta[RTA_DST-1]), ((r->rtm_dst_len+7)>>3));
+        cfg->fc_table = rtm->rtm_table;
+        cfg->fc_dst_len = rtm->rtm_dst_len;
+        cfg->fc_src_len = rtm->rtm_src_len;
+        cfg->fc_flags = RTF_UP;
+        cfg->fc_protocol = rtm->rtm_protocol;
+
+        if (rtm->rtm_type == RTN_UNREACHABLE)
+                cfg->fc_flags |= RTF_REJECT;
+
+        cfg->fc_nlinfo.pid = NETLINK_CB(skb).pid;
+        cfg->fc_nlinfo.nlh = nlh;
+
+        if (tb[RTA_GATEWAY]) {
+                nla_memcpy(&cfg->fc_gateway, tb[RTA_GATEWAY], 16);
+                cfg->fc_flags |= RTF_GATEWAY;
         }
-        if (rta[RTA_SRC-1]) {
-                if (RTA_PAYLOAD(rta[RTA_SRC-1]) < ((r->rtm_src_len+7)>>3))
-                        return -EINVAL;
-                memcpy(&rtmsg->rtmsg_src, RTA_DATA(rta[RTA_SRC-1]), ((r->rtm_src_len+7)>>3));
+
+        if (tb[RTA_DST]) {
+                int plen = (rtm->rtm_dst_len + 7) >> 3;
+
+                if (nla_len(tb[RTA_DST]) < plen)
+                        goto errout;
+
+                nla_memcpy(&cfg->fc_dst, tb[RTA_DST], plen);
         }
-        if (rta[RTA_OIF-1]) {
-                if (rta[RTA_OIF-1]->rta_len != RTA_LENGTH(sizeof(int)))
-                        return -EINVAL;
-                memcpy(&rtmsg->rtmsg_ifindex, RTA_DATA(rta[RTA_OIF-1]), sizeof(int));
+
+        if (tb[RTA_SRC]) {
+                int plen = (rtm->rtm_src_len + 7) >> 3;
+
+                if (nla_len(tb[RTA_SRC]) < plen)
+                        goto errout;
+
+                nla_memcpy(&cfg->fc_src, tb[RTA_SRC], plen);
         }
-        if (rta[RTA_PRIORITY-1]) {
-                if (rta[RTA_PRIORITY-1]->rta_len != RTA_LENGTH(4))
-                        return -EINVAL;
-                memcpy(&rtmsg->rtmsg_metric, RTA_DATA(rta[RTA_PRIORITY-1]), 4);
+
+        if (tb[RTA_OIF])
+                cfg->fc_ifindex = nla_get_u32(tb[RTA_OIF]);
+
+        if (tb[RTA_PRIORITY])
+                cfg->fc_metric = nla_get_u32(tb[RTA_PRIORITY]);
+
+        if (tb[RTA_METRICS]) {
+                cfg->fc_mx = nla_data(tb[RTA_METRICS]);
+                cfg->fc_mx_len = nla_len(tb[RTA_METRICS]);
         }
-        return 0;
+
+        if (tb[RTA_TABLE])
+                cfg->fc_table = nla_get_u32(tb[RTA_TABLE]);
+
+        err = 0;
+errout:
+        return err;
 }
 
 int inet6_rtm_delroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
 {
-        struct rtmsg *r = NLMSG_DATA(nlh);
-        struct in6_rtmsg rtmsg;
+        struct fib6_config cfg;
+        int err;
 
-        if (inet6_rtm_to_rtmsg(r, arg, &rtmsg))
-                return -EINVAL;
-        return ip6_route_del(&rtmsg, nlh, arg, &NETLINK_CB(skb),
-                             rtm_get_table(arg, r->rtm_table));
+        err = rtm_to_fib6_config(skb, nlh, &cfg);
+        if (err < 0)
+                return err;
+
+        return ip6_route_del(&cfg);
 }
 
 int inet6_rtm_newroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
 {
-        struct rtmsg *r = NLMSG_DATA(nlh);
-        struct in6_rtmsg rtmsg;
+        struct fib6_config cfg;
+        int err;
 
-        if (inet6_rtm_to_rtmsg(r, arg, &rtmsg))
-                return -EINVAL;
-        return ip6_route_add(&rtmsg, nlh, arg, &NETLINK_CB(skb),
-                             rtm_get_table(arg, r->rtm_table));
+        err = rtm_to_fib6_config(skb, nlh, &cfg);
+        if (err < 0)
+                return err;
+
+        return ip6_route_add(&cfg);
 }
 
 static int rt6_fill_node(struct sk_buff *skb, struct rt6_info *rt,
@@ -2063,15 +2108,21 @@ out_free:
         goto out;       
 }
 
-void inet6_rt_notify(int event, struct rt6_info *rt, struct nlmsghdr *nlh, 
-                        struct netlink_skb_parms *req)
+void inet6_rt_notify(int event, struct rt6_info *rt, struct nl_info *info)
 {
         struct sk_buff *skb;
-        u32 pid = req ? req->pid : 0;
-        u32 seq = nlh ? nlh->nlmsg_seq : 0;
+        u32 pid = 0, seq = 0;
+        struct nlmsghdr *nlh = NULL;
         int payload = sizeof(struct rtmsg) + 256;
         int err = -ENOBUFS;
 
+        if (info) {
+                pid = info->pid;
+                nlh = info->nlh;
+                if (nlh)
+                        seq = nlh->nlmsg_seq;
+        }
+
         skb = nlmsg_new(nlmsg_total_size(payload), gfp_any());
         if (skb == NULL)
                 goto errout;