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tcp: add init_cookie_seq method to tcp_request_sock_ops

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Move the specific IPv4/IPv6 cookie sequence initialization to a new
method in tcp_request_sock_ops in preparation for unifying
tcp_v4_conn_request and tcp_v6_conn_request.

Signed-off-by: Octavian Purdila <octavian.purdila@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Octavian Purdila
2014-06-25 17:09:54 +03:00
committed by David S. Miller
parent 16bea70aa7
commit fb7b37a7f3
3 changed files with 28 additions and 16 deletions
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34
include/net/tcp.h
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@@ -495,13 +495,6 @@ u32 __cookie_v4_init_sequence(const struct iphdr *iph, const struct tcphdr *th,
u16 *mssp);
__u32 cookie_v4_init_sequence(struct sock *sk, const struct sk_buff *skb,
__u16 *mss);
#else
static inline __u32 cookie_v4_init_sequence(struct sock *sk,
const struct sk_buff *skb,
__u16 *mss)
{
return 0;
}
#endif
__u32 cookie_init_timestamp(struct request_sock *req);
@@ -517,13 +510,6 @@ u32 __cookie_v6_init_sequence(const struct ipv6hdr *iph,
const struct tcphdr *th, u16 *mssp);
__u32 cookie_v6_init_sequence(struct sock *sk, const struct sk_buff *skb,
__u16 *mss);
#else
static inline __u32 cookie_v6_init_sequence(struct sock *sk,
struct sk_buff *skb,
__u16 *mss)
{
return 0;
}
#endif
/* tcp_output.c */
@@ -1615,8 +1601,28 @@ struct tcp_request_sock_ops {
#endif
void (*init_req)(struct request_sock *req, struct sock *sk,
struct sk_buff *skb);
#ifdef CONFIG_SYN_COOKIES
__u32 (*cookie_init_seq)(struct sock *sk, const struct sk_buff *skb,
__u16 *mss);
#endif
};
#ifdef CONFIG_SYN_COOKIES
static inline __u32 cookie_init_sequence(const struct tcp_request_sock_ops *ops,
struct sock *sk, struct sk_buff *skb,
__u16 *mss)
{
return ops->cookie_init_seq(sk, skb, mss);
}
#else
static inline __u32 cookie_init_sequence(const struct tcp_request_sock_ops *ops,
struct sock *sk, struct sk_buff *skb,
__u16 *mss)
{
return 0;
}
#endif
int tcpv4_offload_init(void);
void tcp_v4_init(void);