[IPV4]: ip_route_input() annotations

ip_route_input() takes net-endian source and destination address.
* Annotated as such.
* arguments of its invocations annotated where needed.
* local helpers getting the same values passed to by it (ip_route_input_mc(),
ip_route_input_slow(), ip_handle_martian_source(), ip_mkroute_input(),
ip_mkroute_input_def(), __mkroute_input()) annotated

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 14 insertions, 12 deletions

diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c
index c8a3723bc001..48e1ccb2ff55 100644
--- a/net/ipv4/arp.c
+++ b/net/ipv4/arp.c
@@ -710,7 +710,7 @@ static int arp_process(struct sk_buff *skb)
         unsigned char *arp_ptr;
         struct rtable *rt;
         unsigned char *sha, *tha;
-        u32 sip, tip;
+        __be32 sip, tip;
         u16 dev_type = dev->type;
         int addr_type;
         struct neighbour *n;
diff --git a/net/ipv4/ip_options.c b/net/ipv4/ip_options.c
index e7437c091326..87f25486fd64 100644
--- a/net/ipv4/ip_options.c
+++ b/net/ipv4/ip_options.c
@@ -607,7 +607,7 @@ int ip_options_rcv_srr(struct sk_buff *skb)
 {
         struct ip_options *opt = &(IPCB(skb)->opt);
         int srrspace, srrptr;
-        u32 nexthop;
+        __be32 nexthop;
         struct iphdr *iph = skb->nh.iph;
         unsigned char * optptr = skb->nh.raw + opt->srr;
         struct rtable *rt = (struct rtable*)skb->dst;
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 20ffe8e88c0f..bbe529774fd9 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1596,7 +1596,7 @@ static void rt_set_nexthop(struct rtable *rt, struct fib_result *res, u32 itag)
         rt->rt_type = res->type;
 }
 
-static int ip_route_input_mc(struct sk_buff *skb, u32 daddr, u32 saddr,
+static int ip_route_input_mc(struct sk_buff *skb, __be32 daddr, __be32 saddr,
                                 u8 tos, struct net_device *dev, int our)
 {
         unsigned hash;
@@ -1681,8 +1681,8 @@ e_inval:
 static void ip_handle_martian_source(struct net_device *dev,
                                      struct in_device *in_dev,
                                      struct sk_buff *skb,
-                                     u32 daddr,
-                                     u32 saddr) 
+                                     __be32 daddr,
+                                     __be32 saddr)
 {
         RT_CACHE_STAT_INC(in_martian_src);
 #ifdef CONFIG_IP_ROUTE_VERBOSE
@@ -1712,7 +1712,7 @@ static void ip_handle_martian_source(struct net_device *dev,
 static inline int __mkroute_input(struct sk_buff *skb, 
                                   struct fib_result* res, 
                                   struct in_device *in_dev, 
-                                  u32 daddr, u32 saddr, u32 tos, 
+                                  __be32 daddr, __be32 saddr, u32 tos,
                                   struct rtable **result) 
 {
 
@@ -1813,7 +1813,7 @@ static inline int ip_mkroute_input_def(struct sk_buff *skb,
                                        struct fib_result* res, 
                                        const struct flowi *fl,
                                        struct in_device *in_dev,
-                                       u32 daddr, u32 saddr, u32 tos)
+                                       __be32 daddr, __be32 saddr, u32 tos)
 {
         struct rtable* rth = NULL;
         int err;
@@ -1838,7 +1838,7 @@ static inline int ip_mkroute_input(struct sk_buff *skb,
                                    struct fib_result* res, 
                                    const struct flowi *fl,
                                    struct in_device *in_dev,
-                                   u32 daddr, u32 saddr, u32 tos)
+                                   __be32 daddr, __be32 saddr, u32 tos)
 {
 #ifdef CONFIG_IP_ROUTE_MULTIPATH_CACHED
         struct rtable* rth = NULL, *rtres;
@@ -1901,7 +1901,7 @@ static inline int ip_mkroute_input(struct sk_buff *skb,
  *      2. IP spoofing attempts are filtered with 100% of guarantee.
  */
 
-static int ip_route_input_slow(struct sk_buff *skb, u32 daddr, u32 saddr,
+static int ip_route_input_slow(struct sk_buff *skb, __be32 daddr, __be32 saddr,
                                u8 tos, struct net_device *dev)
 {
         struct fib_result res;
@@ -1920,7 +1920,7 @@ static int ip_route_input_slow(struct sk_buff *skb, u32 daddr, u32 saddr,
         u32             itag = 0;
         struct rtable * rth;
         unsigned        hash;
-        u32             spec_dst;
+        __be32          spec_dst;
         int             err = -EINVAL;
         int             free_res = 0;
 
@@ -2087,7 +2087,7 @@ martian_source:
         goto e_inval;
 }
 
-int ip_route_input(struct sk_buff *skb, u32 daddr, u32 saddr,
+int ip_route_input(struct sk_buff *skb, __be32 daddr, __be32 saddr,
                    u8 tos, struct net_device *dev)
 {
         struct rtable * rth;
@@ -2740,7 +2740,9 @@ int inet_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr* nlh, void *arg)
         struct rtmsg *rtm;
         struct nlattr *tb[RTA_MAX+1];
         struct rtable *rt = NULL;
-        u32 dst, src, iif;
+        __be32 dst = 0;
+        __be32 src = 0;
+        u32 iif;
         int err;
         struct sk_buff *skb;