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>
diff --git a/net/ipv6/mip6.c b/net/ipv6/mip6.c
index 9b21048..43242e6 100644
--- a/net/ipv6/mip6.c
+++ b/net/ipv6/mip6.c
@@ -126,7 +126,7 @@
static int mip6_destopt_input(struct xfrm_state *x, struct sk_buff *skb)
{
- struct ipv6hdr *iph = ipv6_hdr(skb);
+ const struct ipv6hdr *iph = ipv6_hdr(skb);
struct ipv6_destopt_hdr *destopt = (struct ipv6_destopt_hdr *)skb->data;
int err = destopt->nexthdr;
@@ -181,8 +181,8 @@
}
static inline int mip6_report_rl_allow(struct timeval *stamp,
- struct in6_addr *dst,
- struct in6_addr *src, int iif)
+ const struct in6_addr *dst,
+ const struct in6_addr *src, int iif)
{
int allow = 0;
@@ -349,7 +349,7 @@
static int mip6_rthdr_input(struct xfrm_state *x, struct sk_buff *skb)
{
- struct ipv6hdr *iph = ipv6_hdr(skb);
+ const struct ipv6hdr *iph = ipv6_hdr(skb);
struct rt2_hdr *rt2 = (struct rt2_hdr *)skb->data;
int err = rt2->rt_hdr.nexthdr;