From 318cf7aaa0a6d20ecf6be33eb771291e5ff2e3b9 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Mon, 24 Oct 2011 02:46:04 -0400 Subject: tcp: md5: add more const attributes Now tcp_md5_hash_header() has a const tcphdr argument, we can add more const attributes to callers. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- net/ipv4/tcp_ipv4.c | 12 ++++++------ net/ipv6/tcp_ipv6.c | 13 +++++++------ 2 files changed, 13 insertions(+), 12 deletions(-) (limited to 'net') diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index 955c9255cd98..1dad7e92f005 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -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 diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c index da2ada881cfa..c8683fcc487a 100644 --- a/net/ipv6/tcp_ipv6.c +++ b/net/ipv6/tcp_ipv6.c @@ -761,7 +761,7 @@ static int tcp_v6_md5_hash_pseudoheader(struct tcp_md5sig_pool *hp, static int tcp_v6_md5_hash_hdr(char *md5_hash, struct tcp_md5sig_key *key, const struct in6_addr *daddr, struct in6_addr *saddr, - struct tcphdr *th) + const struct tcphdr *th) { struct tcp_md5sig_pool *hp; struct hash_desc *desc; @@ -793,13 +793,14 @@ clear_hash_noput: } static int tcp_v6_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) { const struct in6_addr *saddr, *daddr; struct tcp_md5sig_pool *hp; struct hash_desc *desc; - struct tcphdr *th = tcp_hdr(skb); + const struct tcphdr *th = tcp_hdr(skb); if (sk) { saddr = &inet6_sk(sk)->saddr; @@ -842,12 +843,12 @@ clear_hash_noput: return 1; } -static int tcp_v6_inbound_md5_hash (struct sock *sk, struct sk_buff *skb) +static int tcp_v6_inbound_md5_hash(struct sock *sk, const struct sk_buff *skb) { const __u8 *hash_location = NULL; struct tcp_md5sig_key *hash_expected; const struct ipv6hdr *ip6h = ipv6_hdr(skb); - struct tcphdr *th = tcp_hdr(skb); + const struct tcphdr *th = tcp_hdr(skb); int genhash; u8 newhash[16]; -- cgit v1.2.3-58-ga151