ipv6.c (0eea505058740aa45486145296ef4fefbd8cab85) ipv6.c (45f6fad84cc305103b28d73482b344d7f5b76f39)
1/*
2 * DCCP over IPv6
3 * Linux INET6 implementation
4 *
5 * Based on net/dccp6/ipv6.c
6 *
7 * Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
8 *

--- 188 unchanged lines hidden (view full) ---

197 fl6.saddr = ireq->ir_v6_loc_addr;
198 fl6.flowlabel = 0;
199 fl6.flowi6_oif = ireq->ir_iif;
200 fl6.fl6_dport = ireq->ir_rmt_port;
201 fl6.fl6_sport = htons(ireq->ir_num);
202 security_req_classify_flow(req, flowi6_to_flowi(&fl6));
203
204
1/*
2 * DCCP over IPv6
3 * Linux INET6 implementation
4 *
5 * Based on net/dccp6/ipv6.c
6 *
7 * Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
8 *

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197 fl6.saddr = ireq->ir_v6_loc_addr;
198 fl6.flowlabel = 0;
199 fl6.flowi6_oif = ireq->ir_iif;
200 fl6.fl6_dport = ireq->ir_rmt_port;
201 fl6.fl6_sport = htons(ireq->ir_num);
202 security_req_classify_flow(req, flowi6_to_flowi(&fl6));
203
204
205 final_p = fl6_update_dst(&fl6, np->opt, &final);
205 rcu_read_lock();
206 final_p = fl6_update_dst(&fl6, rcu_dereference(np->opt), &final);
207 rcu_read_unlock();
206
207 dst = ip6_dst_lookup_flow(sk, &fl6, final_p);
208 if (IS_ERR(dst)) {
209 err = PTR_ERR(dst);
210 dst = NULL;
211 goto done;
212 }
213
214 skb = dccp_make_response(sk, dst, req);
215 if (skb != NULL) {
216 struct dccp_hdr *dh = dccp_hdr(skb);
217
218 dh->dccph_checksum = dccp_v6_csum_finish(skb,
219 &ireq->ir_v6_loc_addr,
220 &ireq->ir_v6_rmt_addr);
221 fl6.daddr = ireq->ir_v6_rmt_addr;
208
209 dst = ip6_dst_lookup_flow(sk, &fl6, final_p);
210 if (IS_ERR(dst)) {
211 err = PTR_ERR(dst);
212 dst = NULL;
213 goto done;
214 }
215
216 skb = dccp_make_response(sk, dst, req);
217 if (skb != NULL) {
218 struct dccp_hdr *dh = dccp_hdr(skb);
219
220 dh->dccph_checksum = dccp_v6_csum_finish(skb,
221 &ireq->ir_v6_loc_addr,
222 &ireq->ir_v6_rmt_addr);
223 fl6.daddr = ireq->ir_v6_rmt_addr;
222 err = ip6_xmit(sk, skb, &fl6, np->opt, np->tclass);
224 rcu_read_lock();
225 err = ip6_xmit(sk, skb, &fl6, rcu_dereference(np->opt),
226 np->tclass);
227 rcu_read_unlock();
223 err = net_xmit_eval(err);
224 }
225
226done:
227 dst_release(dst);
228 return err;
229}
230

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382 struct request_sock *req,
383 struct dst_entry *dst,
384 struct request_sock *req_unhash,
385 bool *own_req)
386{
387 struct inet_request_sock *ireq = inet_rsk(req);
388 struct ipv6_pinfo *newnp;
389 const struct ipv6_pinfo *np = inet6_sk(sk);
228 err = net_xmit_eval(err);
229 }
230
231done:
232 dst_release(dst);
233 return err;
234}
235

--- 151 unchanged lines hidden (view full) ---

387 struct request_sock *req,
388 struct dst_entry *dst,
389 struct request_sock *req_unhash,
390 bool *own_req)
391{
392 struct inet_request_sock *ireq = inet_rsk(req);
393 struct ipv6_pinfo *newnp;
394 const struct ipv6_pinfo *np = inet6_sk(sk);
395 struct ipv6_txoptions *opt;
390 struct inet_sock *newinet;
391 struct dccp6_sock *newdp6;
392 struct sock *newsk;
393
394 if (skb->protocol == htons(ETH_P_IP)) {
395 /*
396 * v6 mapped
397 */

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483 newnp->mcast_hops = ipv6_hdr(skb)->hop_limit;
484
485 /*
486 * Clone native IPv6 options from listening socket (if any)
487 *
488 * Yes, keeping reference count would be much more clever, but we make
489 * one more one thing there: reattach optmem to newsk.
490 */
396 struct inet_sock *newinet;
397 struct dccp6_sock *newdp6;
398 struct sock *newsk;
399
400 if (skb->protocol == htons(ETH_P_IP)) {
401 /*
402 * v6 mapped
403 */

--- 85 unchanged lines hidden (view full) ---

489 newnp->mcast_hops = ipv6_hdr(skb)->hop_limit;
490
491 /*
492 * Clone native IPv6 options from listening socket (if any)
493 *
494 * Yes, keeping reference count would be much more clever, but we make
495 * one more one thing there: reattach optmem to newsk.
496 */
491 if (np->opt != NULL)
492 newnp->opt = ipv6_dup_options(newsk, np->opt);
493
497 opt = rcu_dereference(np->opt);
498 if (opt) {
499 opt = ipv6_dup_options(newsk, opt);
500 RCU_INIT_POINTER(newnp->opt, opt);
501 }
494 inet_csk(newsk)->icsk_ext_hdr_len = 0;
502 inet_csk(newsk)->icsk_ext_hdr_len = 0;
495 if (newnp->opt != NULL)
496 inet_csk(newsk)->icsk_ext_hdr_len = (newnp->opt->opt_nflen +
497 newnp->opt->opt_flen);
503 if (opt)
504 inet_csk(newsk)->icsk_ext_hdr_len = opt->opt_nflen +
505 opt->opt_flen;
498
499 dccp_sync_mss(newsk, dst_mtu(dst));
500
501 newinet->inet_daddr = newinet->inet_saddr = LOOPBACK4_IPV6;
502 newinet->inet_rcv_saddr = LOOPBACK4_IPV6;
503
504 if (__inet_inherit_port(sk, newsk) < 0) {
505 inet_csk_prepare_forced_close(newsk);

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752 int addr_len)
753{
754 struct sockaddr_in6 *usin = (struct sockaddr_in6 *)uaddr;
755 struct inet_connection_sock *icsk = inet_csk(sk);
756 struct inet_sock *inet = inet_sk(sk);
757 struct ipv6_pinfo *np = inet6_sk(sk);
758 struct dccp_sock *dp = dccp_sk(sk);
759 struct in6_addr *saddr = NULL, *final_p, final;
506
507 dccp_sync_mss(newsk, dst_mtu(dst));
508
509 newinet->inet_daddr = newinet->inet_saddr = LOOPBACK4_IPV6;
510 newinet->inet_rcv_saddr = LOOPBACK4_IPV6;
511
512 if (__inet_inherit_port(sk, newsk) < 0) {
513 inet_csk_prepare_forced_close(newsk);

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760 int addr_len)
761{
762 struct sockaddr_in6 *usin = (struct sockaddr_in6 *)uaddr;
763 struct inet_connection_sock *icsk = inet_csk(sk);
764 struct inet_sock *inet = inet_sk(sk);
765 struct ipv6_pinfo *np = inet6_sk(sk);
766 struct dccp_sock *dp = dccp_sk(sk);
767 struct in6_addr *saddr = NULL, *final_p, final;
768 struct ipv6_txoptions *opt;
760 struct flowi6 fl6;
761 struct dst_entry *dst;
762 int addr_type;
763 int err;
764
765 dp->dccps_role = DCCP_ROLE_CLIENT;
766
767 if (addr_len < SIN6_LEN_RFC2133)

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851 fl6.flowi6_proto = IPPROTO_DCCP;
852 fl6.daddr = sk->sk_v6_daddr;
853 fl6.saddr = saddr ? *saddr : np->saddr;
854 fl6.flowi6_oif = sk->sk_bound_dev_if;
855 fl6.fl6_dport = usin->sin6_port;
856 fl6.fl6_sport = inet->inet_sport;
857 security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));
858
769 struct flowi6 fl6;
770 struct dst_entry *dst;
771 int addr_type;
772 int err;
773
774 dp->dccps_role = DCCP_ROLE_CLIENT;
775
776 if (addr_len < SIN6_LEN_RFC2133)

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860 fl6.flowi6_proto = IPPROTO_DCCP;
861 fl6.daddr = sk->sk_v6_daddr;
862 fl6.saddr = saddr ? *saddr : np->saddr;
863 fl6.flowi6_oif = sk->sk_bound_dev_if;
864 fl6.fl6_dport = usin->sin6_port;
865 fl6.fl6_sport = inet->inet_sport;
866 security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));
867
859 final_p = fl6_update_dst(&fl6, np->opt, &final);
868 opt = rcu_dereference_protected(np->opt, sock_owned_by_user(sk));
869 final_p = fl6_update_dst(&fl6, opt, &final);
860
861 dst = ip6_dst_lookup_flow(sk, &fl6, final_p);
862 if (IS_ERR(dst)) {
863 err = PTR_ERR(dst);
864 goto failure;
865 }
866
867 if (saddr == NULL) {
868 saddr = &fl6.saddr;
869 sk->sk_v6_rcv_saddr = *saddr;
870 }
871
872 /* set the source address */
873 np->saddr = *saddr;
874 inet->inet_rcv_saddr = LOOPBACK4_IPV6;
875
876 __ip6_dst_store(sk, dst, NULL, NULL);
877
878 icsk->icsk_ext_hdr_len = 0;
870
871 dst = ip6_dst_lookup_flow(sk, &fl6, final_p);
872 if (IS_ERR(dst)) {
873 err = PTR_ERR(dst);
874 goto failure;
875 }
876
877 if (saddr == NULL) {
878 saddr = &fl6.saddr;
879 sk->sk_v6_rcv_saddr = *saddr;
880 }
881
882 /* set the source address */
883 np->saddr = *saddr;
884 inet->inet_rcv_saddr = LOOPBACK4_IPV6;
885
886 __ip6_dst_store(sk, dst, NULL, NULL);
887
888 icsk->icsk_ext_hdr_len = 0;
879 if (np->opt != NULL)
880 icsk->icsk_ext_hdr_len = (np->opt->opt_flen +
881 np->opt->opt_nflen);
889 if (opt)
890 icsk->icsk_ext_hdr_len = opt->opt_flen + opt->opt_nflen;
882
883 inet->inet_dport = usin->sin6_port;
884
885 dccp_set_state(sk, DCCP_REQUESTING);
886 err = inet6_hash_connect(&dccp_death_row, sk);
887 if (err)
888 goto late_failure;
889

--- 222 unchanged lines hidden --- 		891
892 inet->inet_dport = usin->sin6_port;
893
894 dccp_set_state(sk, DCCP_REQUESTING);
895 err = inet6_hash_connect(&dccp_death_row, sk);
896 if (err)
897 goto late_failure;
898

--- 222 unchanged lines hidden ---