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tcp: md5: add more const attributes

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Now tcp_md5_hash_header() has a const tcphdr argument, we can add more
const attributes to callers.

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 2011-10-24 02:46:04 -04:00 • committed by David S. Miller
parent 8f9f4668b3
commit 318cf7aaa0
3 changed files with 22 additions and 20 deletions
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12
net/ipv4/tcp_ipv4.c
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@ -92,7 +92,7 @@ EXPORT_SYMBOL(sysctl_tcp_low_latency);
static struct tcp_md5sig_key *tcp_v4_md5_do_lookup(struct sock *sk,
__be32 addr);
static int tcp_v4_md5_hash_hdr(char *md5_hash, struct tcp_md5sig_key *key,
__be32 daddr, __be32 saddr, struct tcphdr *th);
__be32 daddr, __be32 saddr, const struct tcphdr *th);
#else
static inline
struct tcp_md5sig_key *tcp_v4_md5_do_lookup(struct sock *sk, __be32 addr)
@ -1090,7 +1090,7 @@ static int tcp_v4_md5_hash_pseudoheader(struct tcp_md5sig_pool *hp,
}
static int tcp_v4_md5_hash_hdr(char *md5_hash, struct tcp_md5sig_key *key,
__be32 daddr, __be32 saddr, struct tcphdr *th)
__be32 daddr, __be32 saddr, const struct tcphdr *th)
{
struct tcp_md5sig_pool *hp;
struct hash_desc *desc;
@ -1122,12 +1122,12 @@ clear_hash_noput:
}
int tcp_v4_md5_hash_skb(char *md5_hash, struct tcp_md5sig_key *key,
struct sock *sk, struct request_sock *req,
struct sk_buff *skb)
const struct sock *sk, const struct request_sock *req,
const struct sk_buff *skb)
{
struct tcp_md5sig_pool *hp;
struct hash_desc *desc;
struct tcphdr *th = tcp_hdr(skb);
const struct tcphdr *th = tcp_hdr(skb);
__be32 saddr, daddr;
if (sk) {
@ -1172,7 +1172,7 @@ clear_hash_noput:
}
EXPORT_SYMBOL(tcp_v4_md5_hash_skb);
static int tcp_v4_inbound_md5_hash(struct sock *sk, struct sk_buff *skb)
static int tcp_v4_inbound_md5_hash(struct sock *sk, const struct sk_buff *skb)
{
/*
* This gets called for each TCP segment that arrives