netlink: implement nla_put_in_addr and nla_put_in6_addr

IP addresses are often stored in netlink attributes. Add generic functions
to do that.

For nla_put_in_addr, it would be nicer to pass struct in_addr but this is
not used universally throughout the kernel, in way too many places __be32 is
used to store IPv4 address.

Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 4 deletions

diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c
index 66c1e4fbf884..453b24e5322c 100644
--- a/net/ipv4/fib_semantics.c
+++ b/net/ipv4/fib_semantics.c
@@ -1015,7 +1015,7 @@ int fib_dump_info(struct sk_buff *skb, u32 portid, u32 seq, int event,
         rtm->rtm_protocol = fi->fib_protocol;
 
         if (rtm->rtm_dst_len &&
-            nla_put_be32(skb, RTA_DST, dst))
+            nla_put_in_addr(skb, RTA_DST, dst))
                 goto nla_put_failure;
         if (fi->fib_priority &&
             nla_put_u32(skb, RTA_PRIORITY, fi->fib_priority))
@@ -1024,11 +1024,11 @@ int fib_dump_info(struct sk_buff *skb, u32 portid, u32 seq, int event,
                 goto nla_put_failure;
 
         if (fi->fib_prefsrc &&
-            nla_put_be32(skb, RTA_PREFSRC, fi->fib_prefsrc))
+            nla_put_in_addr(skb, RTA_PREFSRC, fi->fib_prefsrc))
                 goto nla_put_failure;
         if (fi->fib_nhs == 1) {
                 if (fi->fib_nh->nh_gw &&
-                    nla_put_be32(skb, RTA_GATEWAY, fi->fib_nh->nh_gw))
+                    nla_put_in_addr(skb, RTA_GATEWAY, fi->fib_nh->nh_gw))
                         goto nla_put_failure;
                 if (fi->fib_nh->nh_oif &&
                     nla_put_u32(skb, RTA_OIF, fi->fib_nh->nh_oif))
@@ -1058,7 +1058,7 @@ int fib_dump_info(struct sk_buff *skb, u32 portid, u32 seq, int event,
                         rtnh->rtnh_ifindex = nh->nh_oif;
 
                         if (nh->nh_gw &&
-                            nla_put_be32(skb, RTA_GATEWAY, nh->nh_gw))
+                            nla_put_in_addr(skb, RTA_GATEWAY, nh->nh_gw))
                                 goto nla_put_failure;
 #ifdef CONFIG_IP_ROUTE_CLASSID
                         if (nh->nh_tclassid &&