inet: constify ip headers and in6_addr

Add const qualifiers to structs iphdr, ipv6hdr and in6_addr pointers
where possible, to make code intention more obvious.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 2 deletions

diff --git a/net/ipv4/ip_input.c b/net/ipv4/ip_input.c
index d7b2b0987a3b..c8f48efc5fd3 100644
--- a/net/ipv4/ip_input.c
+++ b/net/ipv4/ip_input.c
@@ -268,7 +268,7 @@ int ip_local_deliver(struct sk_buff *skb)
 static inline int ip_rcv_options(struct sk_buff *skb)
 {
         struct ip_options *opt;
-        struct iphdr *iph;
+        const struct iphdr *iph;
         struct net_device *dev = skb->dev;
 
         /* It looks as overkill, because not all
@@ -374,7 +374,7 @@ drop:
  */
 int ip_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt, struct net_device *orig_dev)
 {
-        struct iphdr *iph;
+        const struct iphdr *iph;
         u32 len;
 
         /* When the interface is in promisc. mode, drop all the crap