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Commit ae4694b2 authored by David S. Miller's avatar David S. Miller
Browse files

ipv6: Create inet6_csk_route_req(). 



Brother of ipv4's inet_csk_route_req().

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 15c05425

include/net/inet6_connection_sock.h

+3 −0
Original line number Diff line number Diff line
@@ -25,6 +25,9 @@ struct sockaddr; 
extern int inet6_csk_bind_conflict(const struct sock *sk,

				   const struct inet_bind_bucket *tb);



extern struct dst_entry* inet6_csk_route_req(struct sock *sk,

					     const struct request_sock *req);



extern struct request_sock *inet6_csk_search_req(const struct sock *sk,

						 struct request_sock ***prevp,

						 const __be16 rport,

net/ipv6/inet6_connection_sock.c

+32 −0
Original line number Diff line number Diff line
@@ -54,6 +54,38 @@ int inet6_csk_bind_conflict(const struct sock *sk, 


EXPORT_SYMBOL_GPL(inet6_csk_bind_conflict);



struct dst_entry *inet6_csk_route_req(struct sock *sk,

				      const struct request_sock *req)

{

	struct inet6_request_sock *treq = inet6_rsk(req);

	struct ipv6_pinfo *np = inet6_sk(sk);

	struct in6_addr *final_p, final;

	struct dst_entry *dst;

	struct flowi fl;



	memset(&fl, 0, sizeof(fl));

	fl.proto = IPPROTO_TCP;

	ipv6_addr_copy(&fl.fl6_dst, &treq->rmt_addr);

	final_p = fl6_update_dst(&fl, np->opt, &final);

	ipv6_addr_copy(&fl.fl6_src, &treq->loc_addr);

	fl.oif = sk->sk_bound_dev_if;

	fl.mark = sk->sk_mark;

	fl.fl_ip_dport = inet_rsk(req)->rmt_port;

	fl.fl_ip_sport = inet_rsk(req)->loc_port;

	security_req_classify_flow(req, &fl);



	if (ip6_dst_lookup(sk, &dst, &fl))

		return NULL;



	if (final_p)

		ipv6_addr_copy(&fl.fl6_dst, final_p);



	if ((xfrm_lookup(sock_net(sk), &dst, &fl, sk, 0)) < 0)

		return NULL;



	return dst;

}



/*

 * request_sock (formerly open request) hash tables.

 */