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/anycast.c b/net/ipv6/anycast.c
index 0e5e943..674255f 100644
--- a/net/ipv6/anycast.c
+++ b/net/ipv6/anycast.c
@@ -44,7 +44,7 @@
#include <net/checksum.h>
-static int ipv6_dev_ac_dec(struct net_device *dev, struct in6_addr *addr);
+static int ipv6_dev_ac_dec(struct net_device *dev, const struct in6_addr *addr);
/* Big ac list lock for all the sockets */
static DEFINE_RWLOCK(ipv6_sk_ac_lock);
@@ -54,7 +54,7 @@
* socket join an anycast group
*/
-int ipv6_sock_ac_join(struct sock *sk, int ifindex, struct in6_addr *addr)
+int ipv6_sock_ac_join(struct sock *sk, int ifindex, const struct in6_addr *addr)
{
struct ipv6_pinfo *np = inet6_sk(sk);
struct net_device *dev = NULL;
@@ -145,7 +145,7 @@
/*
* socket leave an anycast group
*/
-int ipv6_sock_ac_drop(struct sock *sk, int ifindex, struct in6_addr *addr)
+int ipv6_sock_ac_drop(struct sock *sk, int ifindex, const struct in6_addr *addr)
{
struct ipv6_pinfo *np = inet6_sk(sk);
struct net_device *dev;
@@ -252,7 +252,7 @@
/*
* device anycast group inc (add if not found)
*/
-int ipv6_dev_ac_inc(struct net_device *dev, struct in6_addr *addr)
+int ipv6_dev_ac_inc(struct net_device *dev, const struct in6_addr *addr)
{
struct ifacaddr6 *aca;
struct inet6_dev *idev;
@@ -324,7 +324,7 @@
/*
* device anycast group decrement
*/
-int __ipv6_dev_ac_dec(struct inet6_dev *idev, struct in6_addr *addr)
+int __ipv6_dev_ac_dec(struct inet6_dev *idev, const struct in6_addr *addr)
{
struct ifacaddr6 *aca, *prev_aca;
@@ -358,7 +358,7 @@
}
/* called with rcu_read_lock() */
-static int ipv6_dev_ac_dec(struct net_device *dev, struct in6_addr *addr)
+static int ipv6_dev_ac_dec(struct net_device *dev, const struct in6_addr *addr)
{
struct inet6_dev *idev = __in6_dev_get(dev);
@@ -371,7 +371,7 @@
* check if the interface has this anycast address
* called with rcu_read_lock()
*/
-static int ipv6_chk_acast_dev(struct net_device *dev, struct in6_addr *addr)
+static int ipv6_chk_acast_dev(struct net_device *dev, const struct in6_addr *addr)
{
struct inet6_dev *idev;
struct ifacaddr6 *aca;
@@ -392,7 +392,7 @@
* check if given interface (or any, if dev==0) has this anycast address
*/
int ipv6_chk_acast_addr(struct net *net, struct net_device *dev,
- struct in6_addr *addr)
+ const struct in6_addr *addr)
{
int found = 0;