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authorEric Dumazet <eric.dumazet@gmail.com>2011-04-22 08:53:02 +0400
committerDavid S. Miller <davem@davemloft.net>2011-04-22 22:04:14 +0400
commitb71d1d426d263b0b6cb5760322efebbfc89d4463 (patch)
tree226ca7390bd6187ec9139d2ccedd26fd94d8e57a /net/ipv4/icmp.c
parent5f8629c526b4f7e529a6d27bbd802c0dc7fcc357 (diff)
downloadlinux-b71d1d426d263b0b6cb5760322efebbfc89d4463.tar.xz
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>
Diffstat (limited to 'net/ipv4/icmp.c')
-rw-r--r--net/ipv4/icmp.c12
1 files changed, 6 insertions, 6 deletions
diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c
index e5f8a71d3a2a..74e35e5736e2 100644
--- a/net/ipv4/icmp.c
+++ b/net/ipv4/icmp.c
@@ -373,7 +373,7 @@ out_unlock:
}
static struct rtable *icmp_route_lookup(struct net *net, struct sk_buff *skb_in,
- struct iphdr *iph,
+ const struct iphdr *iph,
__be32 saddr, u8 tos,
int type, int code,
struct icmp_bxm *param)
@@ -637,7 +637,7 @@ EXPORT_SYMBOL(icmp_send);
static void icmp_unreach(struct sk_buff *skb)
{
- struct iphdr *iph;
+ const struct iphdr *iph;
struct icmphdr *icmph;
int hash, protocol;
const struct net_protocol *ipprot;
@@ -656,7 +656,7 @@ static void icmp_unreach(struct sk_buff *skb)
goto out_err;
icmph = icmp_hdr(skb);
- iph = (struct iphdr *)skb->data;
+ iph = (const struct iphdr *)skb->data;
if (iph->ihl < 5) /* Mangled header, drop. */
goto out_err;
@@ -729,7 +729,7 @@ static void icmp_unreach(struct sk_buff *skb)
if (!pskb_may_pull(skb, iph->ihl * 4 + 8))
goto out;
- iph = (struct iphdr *)skb->data;
+ iph = (const struct iphdr *)skb->data;
protocol = iph->protocol;
/*
@@ -758,7 +758,7 @@ out_err:
static void icmp_redirect(struct sk_buff *skb)
{
- struct iphdr *iph;
+ const struct iphdr *iph;
if (skb->len < sizeof(struct iphdr))
goto out_err;
@@ -769,7 +769,7 @@ static void icmp_redirect(struct sk_buff *skb)
if (!pskb_may_pull(skb, sizeof(struct iphdr)))
goto out;
- iph = (struct iphdr *)skb->data;
+ iph = (const struct iphdr *)skb->data;
switch (icmp_hdr(skb)->code & 7) {
case ICMP_REDIR_NET: