[IPv4]: FIB configuration using struct fib_config

Introduces struct fib_config replacing the ugly struct kern_rta
prone to ordering issues. Avoids creating faked netlink messages
for auto generated routes or requests via ioctl.

A new interface net/nexthop.h is added to help navigate through
nexthop configuration arrays.

A new struct nl_info will be used to carry the necessary netlink
information to be used for notifications later on.

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

1 files changed, 3 insertions, 8 deletions

diff --git a/net/ipv4/fib_lookup.h b/net/ipv4/fib_lookup.h
index ddd52496b451..d6d1a89e4003 100644
--- a/net/ipv4/fib_lookup.h
+++ b/net/ipv4/fib_lookup.h
@@ -23,19 +23,14 @@ extern int fib_semantic_match(struct list_head *head,
                               struct fib_result *res, __u32 zone, __u32 mask,
                                 int prefixlen);
 extern void fib_release_info(struct fib_info *);
-extern struct fib_info *fib_create_info(const struct rtmsg *r,
-                                        struct kern_rta *rta,
-                                        const struct nlmsghdr *,
-                                        int *err);
-extern int fib_nh_match(struct rtmsg *r, struct nlmsghdr *,
-                        struct kern_rta *rta, struct fib_info *fi);
+extern struct fib_info *fib_create_info(struct fib_config *cfg);
+extern int fib_nh_match(struct fib_config *cfg, struct fib_info *fi);
 extern int fib_dump_info(struct sk_buff *skb, u32 pid, u32 seq, int event,
                          u32 tb_id, u8 type, u8 scope, void *dst,
                          int dst_len, u8 tos, struct fib_info *fi,
                          unsigned int);
 extern void rtmsg_fib(int event, u32 key, struct fib_alias *fa,
-                      int z, u32 tb_id,
-                      struct nlmsghdr *n, struct netlink_skb_parms *req);
+                      int dst_len, u32 tb_id, struct nl_info *info);
 extern struct fib_alias *fib_find_alias(struct list_head *fah,
                                         u8 tos, u32 prio);
 extern int fib_detect_death(struct fib_info *fi, int order,