const struct sock *sk,
const struct sk_buff *skb);
#endif
- void (*init_req)(struct request_sock *req,
- const struct sock *sk_listener,
- struct sk_buff *skb);
#ifdef CONFIG_SYN_COOKIES
__u32 (*cookie_init_seq)(const struct sk_buff *skb,
__u16 *mss);
#endif
- struct dst_entry *(*route_req)(const struct sock *sk, struct flowi *fl,
- const struct request_sock *req);
+ struct dst_entry *(*route_req)(const struct sock *sk,
+ struct sk_buff *skb,
+ struct flowi *fl,
+ struct request_sock *req);
u32 (*init_seq)(const struct sk_buff *skb);
u32 (*init_ts_off)(const struct net *net, const struct sk_buff *skb);
int (*send_synack)(const struct sock *sk, struct dst_entry *dst,
/* Note: tcp_v6_init_req() might override ir_iif for link locals */
inet_rsk(req)->ir_iif = inet_request_bound_dev_if(sk, skb);
- af_ops->init_req(req, sk, skb);
-
- if (security_inet_conn_request(sk, skb, req))
+ dst = af_ops->route_req(sk, skb, &fl, req);
+ if (!dst)
goto drop_and_free;
if (tmp_opt.tstamp_ok)
tcp_rsk(req)->ts_off = af_ops->init_ts_off(net, skb);
- dst = af_ops->route_req(sk, &fl, req);
- if (!dst)
- goto drop_and_free;
-
if (!want_cookie && !isn) {
/* Kill the following clause, if you dislike this way. */
if (!net->ipv4.sysctl_tcp_syncookies &&
}
static struct dst_entry *tcp_v4_route_req(const struct sock *sk,
+ struct sk_buff *skb,
struct flowi *fl,
- const struct request_sock *req)
+ struct request_sock *req)
{
+ tcp_v4_init_req(req, sk, skb);
+
+ if (security_inet_conn_request(sk, skb, req))
+ return NULL;
+
return inet_csk_route_req(sk, &fl->u.ip4, req);
}
.req_md5_lookup = tcp_v4_md5_lookup,
.calc_md5_hash = tcp_v4_md5_hash_skb,
#endif
- .init_req = tcp_v4_init_req,
#ifdef CONFIG_SYN_COOKIES
.cookie_init_seq = cookie_v4_init_sequence,
#endif
}
static struct dst_entry *tcp_v6_route_req(const struct sock *sk,
+ struct sk_buff *skb,
struct flowi *fl,
- const struct request_sock *req)
+ struct request_sock *req)
{
+ tcp_v6_init_req(req, sk, skb);
+
+ if (security_inet_conn_request(sk, skb, req))
+ return NULL;
+
return inet6_csk_route_req(sk, &fl->u.ip6, req, IPPROTO_TCP);
}
.req_md5_lookup = tcp_v6_md5_lookup,
.calc_md5_hash = tcp_v6_md5_hash_skb,
#endif
- .init_req = tcp_v6_init_req,
#ifdef CONFIG_SYN_COOKIES
.cookie_init_seq = cookie_v6_init_sequence,
#endif
}
EXPORT_SYMBOL_GPL(mptcp_subflow_init_cookie_req);
-static void subflow_v4_init_req(struct request_sock *req,
- const struct sock *sk_listener,
- struct sk_buff *skb)
+static struct dst_entry *subflow_v4_route_req(const struct sock *sk,
+ struct sk_buff *skb,
+ struct flowi *fl,
+ struct request_sock *req)
{
+ struct dst_entry *dst;
+
tcp_rsk(req)->is_mptcp = 1;
- tcp_request_sock_ipv4_ops.init_req(req, sk_listener, skb);
+ dst = tcp_request_sock_ipv4_ops.route_req(sk, skb, fl, req);
+ if (!dst)
+ return NULL;
- subflow_init_req(req, sk_listener, skb);
+ subflow_init_req(req, sk, skb);
+ return dst;
}
#if IS_ENABLED(CONFIG_MPTCP_IPV6)
-static void subflow_v6_init_req(struct request_sock *req,
- const struct sock *sk_listener,
- struct sk_buff *skb)
+static struct dst_entry *subflow_v6_route_req(const struct sock *sk,
+ struct sk_buff *skb,
+ struct flowi *fl,
+ struct request_sock *req)
{
+ struct dst_entry *dst;
+
tcp_rsk(req)->is_mptcp = 1;
- tcp_request_sock_ipv6_ops.init_req(req, sk_listener, skb);
+ dst = tcp_request_sock_ipv6_ops.route_req(sk, skb, fl, req);
+ if (!dst)
+ return NULL;
- subflow_init_req(req, sk_listener, skb);
+ subflow_init_req(req, sk, skb);
+ return dst;
}
#endif
panic("MPTCP: failed to init subflow request sock ops\n");
subflow_request_sock_ipv4_ops = tcp_request_sock_ipv4_ops;
- subflow_request_sock_ipv4_ops.init_req = subflow_v4_init_req;
+ subflow_request_sock_ipv4_ops.route_req = subflow_v4_route_req;
subflow_specific = ipv4_specific;
subflow_specific.conn_request = subflow_v4_conn_request;
#if IS_ENABLED(CONFIG_MPTCP_IPV6)
subflow_request_sock_ipv6_ops = tcp_request_sock_ipv6_ops;
- subflow_request_sock_ipv6_ops.init_req = subflow_v6_init_req;
+ subflow_request_sock_ipv6_ops.route_req = subflow_v6_route_req;
subflow_v6_specific = ipv6_specific;
subflow_v6_specific.conn_request = subflow_v6_conn_request;