ipv6: Create inet6_csk_route_req().
Brother of ipv4's inet_csk_route_req(). Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -25,6 +25,9 @@ struct sockaddr;
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extern int inet6_csk_bind_conflict(const struct sock *sk,
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const struct inet_bind_bucket *tb);
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extern struct dst_entry* inet6_csk_route_req(struct sock *sk,
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const struct request_sock *req);
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extern struct request_sock *inet6_csk_search_req(const struct sock *sk,
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struct request_sock ***prevp,
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const __be16 rport,
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@ -54,6 +54,38 @@ int inet6_csk_bind_conflict(const struct sock *sk,
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EXPORT_SYMBOL_GPL(inet6_csk_bind_conflict);
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struct dst_entry *inet6_csk_route_req(struct sock *sk,
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const struct request_sock *req)
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{
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struct inet6_request_sock *treq = inet6_rsk(req);
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struct ipv6_pinfo *np = inet6_sk(sk);
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struct in6_addr *final_p, final;
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struct dst_entry *dst;
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struct flowi fl;
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memset(&fl, 0, sizeof(fl));
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fl.proto = IPPROTO_TCP;
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ipv6_addr_copy(&fl.fl6_dst, &treq->rmt_addr);
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final_p = fl6_update_dst(&fl, np->opt, &final);
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ipv6_addr_copy(&fl.fl6_src, &treq->loc_addr);
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fl.oif = sk->sk_bound_dev_if;
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fl.mark = sk->sk_mark;
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fl.fl_ip_dport = inet_rsk(req)->rmt_port;
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fl.fl_ip_sport = inet_rsk(req)->loc_port;
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security_req_classify_flow(req, &fl);
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if (ip6_dst_lookup(sk, &dst, &fl))
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return NULL;
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if (final_p)
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ipv6_addr_copy(&fl.fl6_dst, final_p);
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if ((xfrm_lookup(sock_net(sk), &dst, &fl, sk, 0)) < 0)
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return NULL;
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return dst;
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}
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/*
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* request_sock (formerly open request) hash tables.
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*/
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