提交 936b8bdb 编写于 作者: O Octavian Purdila 提交者: David S. Miller

tcp: add init_seq method to tcp_request_sock_ops

More work in preparation of unifying tcp_v4_conn_request and
tcp_v6_conn_request: indirect the init sequence calls via the
tcp_request_sock_ops.
Signed-off-by: NOctavian Purdila <octavian.purdila@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 94037159
......@@ -1608,6 +1608,7 @@ struct tcp_request_sock_ops {
struct dst_entry *(*route_req)(struct sock *sk, struct flowi *fl,
const struct request_sock *req,
bool *strict);
__u32 (*init_seq)(const struct sk_buff *skb);
};
#ifdef CONFIG_SYN_COOKIES
......
......@@ -99,7 +99,7 @@ static int tcp_v4_md5_hash_hdr(char *md5_hash, const struct tcp_md5sig_key *key,
struct inet_hashinfo tcp_hashinfo;
EXPORT_SYMBOL(tcp_hashinfo);
static inline __u32 tcp_v4_init_sequence(const struct sk_buff *skb)
static __u32 tcp_v4_init_sequence(const struct sk_buff *skb)
{
return secure_tcp_sequence_number(ip_hdr(skb)->daddr,
ip_hdr(skb)->saddr,
......@@ -1284,6 +1284,7 @@ static const struct tcp_request_sock_ops tcp_request_sock_ipv4_ops = {
.cookie_init_seq = cookie_v4_init_sequence,
#endif
.route_req = tcp_v4_route_req,
.init_seq = tcp_v4_init_sequence,
};
int tcp_v4_conn_request(struct sock *sk, struct sk_buff *skb)
......@@ -1391,7 +1392,7 @@ int tcp_v4_conn_request(struct sock *sk, struct sk_buff *skb)
goto drop_and_release;
}
isn = tcp_v4_init_sequence(skb);
isn = af_ops->init_seq(skb);
}
if (!dst) {
dst = af_ops->route_req(sk, (struct flowi *)&fl4, req, NULL);
......
......@@ -775,6 +775,7 @@ static const struct tcp_request_sock_ops tcp_request_sock_ipv6_ops = {
.cookie_init_seq = cookie_v6_init_sequence,
#endif
.route_req = tcp_v6_route_req,
.init_seq = tcp_v6_init_sequence,
};
static void tcp_v6_send_response(struct sk_buff *skb, u32 seq, u32 ack, u32 win,
......@@ -1114,7 +1115,7 @@ static int tcp_v6_conn_request(struct sock *sk, struct sk_buff *skb)
goto drop_and_release;
}
isn = tcp_v6_init_sequence(skb);
isn = af_ops->init_seq(skb);
}
if (!dst) {
......
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