summaryrefslogtreecommitdiffstats
path: root/net/ipv6/syncookies.c
diff options
context:
space:
mode:
authorEric Dumazet <eric.dumazet@gmail.com>2011-04-22 04:53:02 +0000
committerDavid S. Miller <davem@davemloft.net>2011-04-22 11:04:14 -0700
commitb71d1d426d263b0b6cb5760322efebbfc89d4463 (patch)
tree226ca7390bd6187ec9139d2ccedd26fd94d8e57a /net/ipv6/syncookies.c
parent5f8629c526b4f7e529a6d27bbd802c0dc7fcc357 (diff)
downloadop-kernel-dev-b71d1d426d263b0b6cb5760322efebbfc89d4463.zip
op-kernel-dev-b71d1d426d263b0b6cb5760322efebbfc89d4463.tar.gz
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/ipv6/syncookies.c')
-rw-r--r--net/ipv6/syncookies.c13
1 files changed, 7 insertions, 6 deletions
diff --git a/net/ipv6/syncookies.c b/net/ipv6/syncookies.c
index 352c260..8b9644a 100644
--- a/net/ipv6/syncookies.c
+++ b/net/ipv6/syncookies.c
@@ -66,7 +66,7 @@ static inline struct sock *get_cookie_sock(struct sock *sk, struct sk_buff *skb,
static DEFINE_PER_CPU(__u32 [16 + 5 + SHA_WORKSPACE_WORDS],
ipv6_cookie_scratch);
-static u32 cookie_hash(struct in6_addr *saddr, struct in6_addr *daddr,
+static u32 cookie_hash(const struct in6_addr *saddr, const struct in6_addr *daddr,
__be16 sport, __be16 dport, u32 count, int c)
{
__u32 *tmp = __get_cpu_var(ipv6_cookie_scratch);
@@ -86,7 +86,8 @@ static u32 cookie_hash(struct in6_addr *saddr, struct in6_addr *daddr,
return tmp[17];
}
-static __u32 secure_tcp_syn_cookie(struct in6_addr *saddr, struct in6_addr *daddr,
+static __u32 secure_tcp_syn_cookie(const struct in6_addr *saddr,
+ const struct in6_addr *daddr,
__be16 sport, __be16 dport, __u32 sseq,
__u32 count, __u32 data)
{
@@ -96,8 +97,8 @@ static __u32 secure_tcp_syn_cookie(struct in6_addr *saddr, struct in6_addr *dadd
& COOKIEMASK));
}
-static __u32 check_tcp_syn_cookie(__u32 cookie, struct in6_addr *saddr,
- struct in6_addr *daddr, __be16 sport,
+static __u32 check_tcp_syn_cookie(__u32 cookie, const struct in6_addr *saddr,
+ const struct in6_addr *daddr, __be16 sport,
__be16 dport, __u32 sseq, __u32 count,
__u32 maxdiff)
{
@@ -116,7 +117,7 @@ static __u32 check_tcp_syn_cookie(__u32 cookie, struct in6_addr *saddr,
__u32 cookie_v6_init_sequence(struct sock *sk, struct sk_buff *skb, __u16 *mssp)
{
- struct ipv6hdr *iph = ipv6_hdr(skb);
+ const struct ipv6hdr *iph = ipv6_hdr(skb);
const struct tcphdr *th = tcp_hdr(skb);
int mssind;
const __u16 mss = *mssp;
@@ -138,7 +139,7 @@ __u32 cookie_v6_init_sequence(struct sock *sk, struct sk_buff *skb, __u16 *mssp)
static inline int cookie_check(struct sk_buff *skb, __u32 cookie)
{
- struct ipv6hdr *iph = ipv6_hdr(skb);
+ const struct ipv6hdr *iph = ipv6_hdr(skb);
const struct tcphdr *th = tcp_hdr(skb);
__u32 seq = ntohl(th->seq) - 1;
__u32 mssind = check_tcp_syn_cookie(cookie, &iph->saddr, &iph->daddr,
OpenPOWER on IntegriCloud