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inet: constify ip headers and in6_addr

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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>
This commit is contained in:
Eric Dumazet
2011-04-22 04:53:02 +00:00
committed by David S. Miller
parent 5f8629c526
commit b71d1d426d
64 changed files with 316 additions and 310 deletions
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18
net/ipv6/ndisc.c
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@@ -324,7 +324,7 @@ static inline u8 *ndisc_opt_addr_data(struct nd_opt_hdr *p,
return lladdr + prepad;
}
int ndisc_mc_map(struct in6_addr *addr, char *buf, struct net_device *dev, int dir)
int ndisc_mc_map(const struct in6_addr *addr, char *buf, struct net_device *dev, int dir)
{
switch (dev->type) {
case ARPHRD_ETHER:
@@ -748,8 +748,8 @@ static int pndisc_is_router(const void *pkey,
static void ndisc_recv_ns(struct sk_buff *skb)
{
struct nd_msg *msg = (struct nd_msg *)skb_transport_header(skb);
struct in6_addr *saddr = &ipv6_hdr(skb)->saddr;
struct in6_addr *daddr = &ipv6_hdr(skb)->daddr;
const struct in6_addr *saddr = &ipv6_hdr(skb)->saddr;
const struct in6_addr *daddr = &ipv6_hdr(skb)->daddr;
u8 *lladdr = NULL;
u32 ndoptlen = skb->tail - (skb->transport_header +
offsetof(struct nd_msg, opt));
@@ -924,8 +924,8 @@ out:
static void ndisc_recv_na(struct sk_buff *skb)
{
struct nd_msg *msg = (struct nd_msg *)skb_transport_header(skb);
struct in6_addr *saddr = &ipv6_hdr(skb)->saddr;
struct in6_addr *daddr = &ipv6_hdr(skb)->daddr;
const struct in6_addr *saddr = &ipv6_hdr(skb)->saddr;
const struct in6_addr *daddr = &ipv6_hdr(skb)->daddr;
u8 *lladdr = NULL;
u32 ndoptlen = skb->tail - (skb->transport_header +
offsetof(struct nd_msg, opt));
@@ -1038,7 +1038,7 @@ static void ndisc_recv_rs(struct sk_buff *skb)
unsigned long ndoptlen = skb->len - sizeof(*rs_msg);
struct neighbour *neigh;
struct inet6_dev *idev;
struct in6_addr *saddr = &ipv6_hdr(skb)->saddr;
const struct in6_addr *saddr = &ipv6_hdr(skb)->saddr;
struct ndisc_options ndopts;
u8 *lladdr = NULL;
@@ -1435,8 +1435,8 @@ static void ndisc_redirect_rcv(struct sk_buff *skb)
{
struct inet6_dev *in6_dev;
struct icmp6hdr *icmph;
struct in6_addr *dest;
struct in6_addr *target; /* new first hop to destination */
const struct in6_addr *dest;
const struct in6_addr *target; /* new first hop to destination */
struct neighbour *neigh;
int on_link = 0;
struct ndisc_options ndopts;
@@ -1469,7 +1469,7 @@ static void ndisc_redirect_rcv(struct sk_buff *skb)
}
icmph = icmp6_hdr(skb);
target = (struct in6_addr *) (icmph + 1);
target = (const struct in6_addr *) (icmph + 1);
dest = target + 1;
if (ipv6_addr_is_multicast(dest)) {