[DCCPv6]: remove forward declarations in ipv6.c
This does the same for ipv6.c as the preceding one does for ipv4.c: Only the inet_connection_sock_af_ops forward declarations remain, since at least dccp_ipv6_mapped has a circular dependency to dccp_v6_request_recv_sock. No code change, merely re-ordering. Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
This commit is contained in:
Gerrit Renker
David S. Miller
parent
3d2fe62b8d
commit
73c9e02c22
385
net/dccp/ipv6.c
385
net/dccp/ipv6.c
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@ -36,11 +36,6 @@
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/* Socket used for sending RSTs and ACKs */
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static struct socket *dccp_v6_ctl_socket;
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static void dccp_v6_ctl_send_reset(struct sk_buff *skb);
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static void dccp_v6_send_check(struct sock *sk, int len, struct sk_buff *skb);
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static int dccp_v6_do_rcv(struct sock *sk, struct sk_buff *skb);
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static struct inet_connection_sock_af_ops dccp_ipv6_mapped;
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static struct inet_connection_sock_af_ops dccp_ipv6_af_ops;
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@ -87,183 +82,6 @@ static __u32 dccp_v6_init_sequence(struct sock *sk, struct sk_buff *skb)
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dh->dccph_sport);
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}
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static int dccp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
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int addr_len)
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{
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struct sockaddr_in6 *usin = (struct sockaddr_in6 *)uaddr;
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struct inet_connection_sock *icsk = inet_csk(sk);
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struct inet_sock *inet = inet_sk(sk);
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struct ipv6_pinfo *np = inet6_sk(sk);
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struct dccp_sock *dp = dccp_sk(sk);
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struct in6_addr *saddr = NULL, *final_p = NULL, final;
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struct flowi fl;
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struct dst_entry *dst;
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int addr_type;
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int err;
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dp->dccps_role = DCCP_ROLE_CLIENT;
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if (addr_len < SIN6_LEN_RFC2133)
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return -EINVAL;
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if (usin->sin6_family != AF_INET6)
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return -EAFNOSUPPORT;
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memset(&fl, 0, sizeof(fl));
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if (np->sndflow) {
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fl.fl6_flowlabel = usin->sin6_flowinfo & IPV6_FLOWINFO_MASK;
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IP6_ECN_flow_init(fl.fl6_flowlabel);
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if (fl.fl6_flowlabel & IPV6_FLOWLABEL_MASK) {
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struct ip6_flowlabel *flowlabel;
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flowlabel = fl6_sock_lookup(sk, fl.fl6_flowlabel);
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if (flowlabel == NULL)
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return -EINVAL;
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ipv6_addr_copy(&usin->sin6_addr, &flowlabel->dst);
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fl6_sock_release(flowlabel);
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}
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}
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/*
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* connect() to INADDR_ANY means loopback (BSD'ism).
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*/
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if (ipv6_addr_any(&usin->sin6_addr))
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usin->sin6_addr.s6_addr[15] = 1;
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addr_type = ipv6_addr_type(&usin->sin6_addr);
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if (addr_type & IPV6_ADDR_MULTICAST)
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return -ENETUNREACH;
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if (addr_type & IPV6_ADDR_LINKLOCAL) {
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if (addr_len >= sizeof(struct sockaddr_in6) &&
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usin->sin6_scope_id) {
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/* If interface is set while binding, indices
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* must coincide.
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*/
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if (sk->sk_bound_dev_if &&
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sk->sk_bound_dev_if != usin->sin6_scope_id)
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return -EINVAL;
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sk->sk_bound_dev_if = usin->sin6_scope_id;
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}
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/* Connect to link-local address requires an interface */
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if (!sk->sk_bound_dev_if)
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return -EINVAL;
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}
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ipv6_addr_copy(&np->daddr, &usin->sin6_addr);
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np->flow_label = fl.fl6_flowlabel;
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/*
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* DCCP over IPv4
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*/
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if (addr_type == IPV6_ADDR_MAPPED) {
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u32 exthdrlen = icsk->icsk_ext_hdr_len;
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struct sockaddr_in sin;
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SOCK_DEBUG(sk, "connect: ipv4 mapped\n");
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if (__ipv6_only_sock(sk))
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return -ENETUNREACH;
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sin.sin_family = AF_INET;
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sin.sin_port = usin->sin6_port;
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sin.sin_addr.s_addr = usin->sin6_addr.s6_addr32[3];
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icsk->icsk_af_ops = &dccp_ipv6_mapped;
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sk->sk_backlog_rcv = dccp_v4_do_rcv;
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err = dccp_v4_connect(sk, (struct sockaddr *)&sin, sizeof(sin));
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if (err) {
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icsk->icsk_ext_hdr_len = exthdrlen;
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icsk->icsk_af_ops = &dccp_ipv6_af_ops;
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sk->sk_backlog_rcv = dccp_v6_do_rcv;
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goto failure;
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} else {
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ipv6_addr_set(&np->saddr, 0, 0, htonl(0x0000FFFF),
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inet->saddr);
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ipv6_addr_set(&np->rcv_saddr, 0, 0, htonl(0x0000FFFF),
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inet->rcv_saddr);
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}
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return err;
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}
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if (!ipv6_addr_any(&np->rcv_saddr))
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saddr = &np->rcv_saddr;
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fl.proto = IPPROTO_DCCP;
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ipv6_addr_copy(&fl.fl6_dst, &np->daddr);
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ipv6_addr_copy(&fl.fl6_src, saddr ? saddr : &np->saddr);
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fl.oif = sk->sk_bound_dev_if;
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fl.fl_ip_dport = usin->sin6_port;
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fl.fl_ip_sport = inet->sport;
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security_sk_classify_flow(sk, &fl);
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if (np->opt != NULL && np->opt->srcrt != NULL) {
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const struct rt0_hdr *rt0 = (struct rt0_hdr *)np->opt->srcrt;
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ipv6_addr_copy(&final, &fl.fl6_dst);
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ipv6_addr_copy(&fl.fl6_dst, rt0->addr);
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final_p = &final;
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}
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err = ip6_dst_lookup(sk, &dst, &fl);
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if (err)
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goto failure;
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if (final_p)
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ipv6_addr_copy(&fl.fl6_dst, final_p);
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err = xfrm_lookup(&dst, &fl, sk, 0);
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if (err < 0)
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goto failure;
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if (saddr == NULL) {
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saddr = &fl.fl6_src;
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ipv6_addr_copy(&np->rcv_saddr, saddr);
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}
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/* set the source address */
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ipv6_addr_copy(&np->saddr, saddr);
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inet->rcv_saddr = LOOPBACK4_IPV6;
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__ip6_dst_store(sk, dst, NULL, NULL);
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icsk->icsk_ext_hdr_len = 0;
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if (np->opt != NULL)
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icsk->icsk_ext_hdr_len = (np->opt->opt_flen +
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np->opt->opt_nflen);
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inet->dport = usin->sin6_port;
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dccp_set_state(sk, DCCP_REQUESTING);
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err = inet6_hash_connect(&dccp_death_row, sk);
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if (err)
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goto late_failure;
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/* FIXME */
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#if 0
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dp->dccps_gar = secure_dccp_v6_sequence_number(np->saddr.s6_addr32,
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np->daddr.s6_addr32,
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inet->sport,
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inet->dport);
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#endif
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err = dccp_connect(sk);
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if (err)
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goto late_failure;
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return 0;
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late_failure:
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dccp_set_state(sk, DCCP_CLOSED);
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__sk_dst_reset(sk);
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failure:
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inet->dport = 0;
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sk->sk_route_caps = 0;
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return err;
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}
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static void dccp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
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int type, int code, int offset, __be32 info)
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{
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@ -487,19 +305,6 @@ static void dccp_v6_reqsk_destructor(struct request_sock *req)
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kfree_skb(inet6_rsk(req)->pktopts);
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}
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static struct request_sock_ops dccp6_request_sock_ops = {
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.family = AF_INET6,
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.obj_size = sizeof(struct dccp6_request_sock),
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.rtx_syn_ack = dccp_v6_send_response,
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.send_ack = dccp_reqsk_send_ack,
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.destructor = dccp_v6_reqsk_destructor,
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.send_reset = dccp_v6_ctl_send_reset,
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};
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static struct timewait_sock_ops dccp6_timewait_sock_ops = {
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.twsk_obj_size = sizeof(struct dccp6_timewait_sock),
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};
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static void dccp_v6_send_check(struct sock *sk, int len, struct sk_buff *skb)
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{
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struct ipv6_pinfo *np = inet6_sk(sk);
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@ -580,6 +385,15 @@ static void dccp_v6_ctl_send_reset(struct sk_buff *rxskb)
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kfree_skb(skb);
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}
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static struct request_sock_ops dccp6_request_sock_ops = {
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.family = AF_INET6,
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.obj_size = sizeof(struct dccp6_request_sock),
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.rtx_syn_ack = dccp_v6_send_response,
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.send_ack = dccp_reqsk_send_ack,
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.destructor = dccp_v6_reqsk_destructor,
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.send_reset = dccp_v6_ctl_send_reset,
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};
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static struct sock *dccp_v6_hnd_req(struct sock *sk,struct sk_buff *skb)
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{
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const struct dccp_hdr *dh = dccp_hdr(skb);
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@ -1062,6 +876,183 @@ discard_and_relse:
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goto discard_it;
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}
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static int dccp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
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int addr_len)
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{
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struct sockaddr_in6 *usin = (struct sockaddr_in6 *)uaddr;
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struct inet_connection_sock *icsk = inet_csk(sk);
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struct inet_sock *inet = inet_sk(sk);
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struct ipv6_pinfo *np = inet6_sk(sk);
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struct dccp_sock *dp = dccp_sk(sk);
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struct in6_addr *saddr = NULL, *final_p = NULL, final;
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struct flowi fl;
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struct dst_entry *dst;
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int addr_type;
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int err;
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dp->dccps_role = DCCP_ROLE_CLIENT;
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if (addr_len < SIN6_LEN_RFC2133)
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return -EINVAL;
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if (usin->sin6_family != AF_INET6)
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return -EAFNOSUPPORT;
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memset(&fl, 0, sizeof(fl));
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if (np->sndflow) {
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fl.fl6_flowlabel = usin->sin6_flowinfo & IPV6_FLOWINFO_MASK;
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IP6_ECN_flow_init(fl.fl6_flowlabel);
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if (fl.fl6_flowlabel & IPV6_FLOWLABEL_MASK) {
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struct ip6_flowlabel *flowlabel;
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flowlabel = fl6_sock_lookup(sk, fl.fl6_flowlabel);
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if (flowlabel == NULL)
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return -EINVAL;
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ipv6_addr_copy(&usin->sin6_addr, &flowlabel->dst);
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fl6_sock_release(flowlabel);
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}
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}
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/*
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* connect() to INADDR_ANY means loopback (BSD'ism).
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*/
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if (ipv6_addr_any(&usin->sin6_addr))
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usin->sin6_addr.s6_addr[15] = 1;
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addr_type = ipv6_addr_type(&usin->sin6_addr);
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if (addr_type & IPV6_ADDR_MULTICAST)
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return -ENETUNREACH;
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if (addr_type & IPV6_ADDR_LINKLOCAL) {
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if (addr_len >= sizeof(struct sockaddr_in6) &&
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usin->sin6_scope_id) {
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/* If interface is set while binding, indices
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* must coincide.
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*/
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if (sk->sk_bound_dev_if &&
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sk->sk_bound_dev_if != usin->sin6_scope_id)
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return -EINVAL;
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sk->sk_bound_dev_if = usin->sin6_scope_id;
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}
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/* Connect to link-local address requires an interface */
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if (!sk->sk_bound_dev_if)
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return -EINVAL;
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}
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ipv6_addr_copy(&np->daddr, &usin->sin6_addr);
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np->flow_label = fl.fl6_flowlabel;
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/*
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* DCCP over IPv4
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*/
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if (addr_type == IPV6_ADDR_MAPPED) {
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u32 exthdrlen = icsk->icsk_ext_hdr_len;
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struct sockaddr_in sin;
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SOCK_DEBUG(sk, "connect: ipv4 mapped\n");
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if (__ipv6_only_sock(sk))
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return -ENETUNREACH;
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sin.sin_family = AF_INET;
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sin.sin_port = usin->sin6_port;
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sin.sin_addr.s_addr = usin->sin6_addr.s6_addr32[3];
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icsk->icsk_af_ops = &dccp_ipv6_mapped;
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sk->sk_backlog_rcv = dccp_v4_do_rcv;
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err = dccp_v4_connect(sk, (struct sockaddr *)&sin, sizeof(sin));
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if (err) {
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icsk->icsk_ext_hdr_len = exthdrlen;
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icsk->icsk_af_ops = &dccp_ipv6_af_ops;
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sk->sk_backlog_rcv = dccp_v6_do_rcv;
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goto failure;
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} else {
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ipv6_addr_set(&np->saddr, 0, 0, htonl(0x0000FFFF),
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inet->saddr);
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ipv6_addr_set(&np->rcv_saddr, 0, 0, htonl(0x0000FFFF),
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inet->rcv_saddr);
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}
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return err;
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}
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if (!ipv6_addr_any(&np->rcv_saddr))
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saddr = &np->rcv_saddr;
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fl.proto = IPPROTO_DCCP;
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ipv6_addr_copy(&fl.fl6_dst, &np->daddr);
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ipv6_addr_copy(&fl.fl6_src, saddr ? saddr : &np->saddr);
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fl.oif = sk->sk_bound_dev_if;
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fl.fl_ip_dport = usin->sin6_port;
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fl.fl_ip_sport = inet->sport;
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security_sk_classify_flow(sk, &fl);
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if (np->opt != NULL && np->opt->srcrt != NULL) {
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const struct rt0_hdr *rt0 = (struct rt0_hdr *)np->opt->srcrt;
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ipv6_addr_copy(&final, &fl.fl6_dst);
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ipv6_addr_copy(&fl.fl6_dst, rt0->addr);
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final_p = &final;
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}
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err = ip6_dst_lookup(sk, &dst, &fl);
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if (err)
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goto failure;
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if (final_p)
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ipv6_addr_copy(&fl.fl6_dst, final_p);
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err = xfrm_lookup(&dst, &fl, sk, 0);
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if (err < 0)
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goto failure;
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if (saddr == NULL) {
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saddr = &fl.fl6_src;
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ipv6_addr_copy(&np->rcv_saddr, saddr);
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}
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/* set the source address */
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ipv6_addr_copy(&np->saddr, saddr);
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inet->rcv_saddr = LOOPBACK4_IPV6;
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__ip6_dst_store(sk, dst, NULL, NULL);
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icsk->icsk_ext_hdr_len = 0;
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if (np->opt != NULL)
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icsk->icsk_ext_hdr_len = (np->opt->opt_flen +
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np->opt->opt_nflen);
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inet->dport = usin->sin6_port;
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dccp_set_state(sk, DCCP_REQUESTING);
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err = inet6_hash_connect(&dccp_death_row, sk);
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if (err)
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goto late_failure;
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/* FIXME */
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#if 0
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dp->dccps_gar = secure_dccp_v6_sequence_number(np->saddr.s6_addr32,
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np->daddr.s6_addr32,
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inet->sport,
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inet->dport);
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#endif
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err = dccp_connect(sk);
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if (err)
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goto late_failure;
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return 0;
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late_failure:
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dccp_set_state(sk, DCCP_CLOSED);
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__sk_dst_reset(sk);
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failure:
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inet->dport = 0;
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sk->sk_route_caps = 0;
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return err;
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}
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static struct inet_connection_sock_af_ops dccp_ipv6_af_ops = {
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.queue_xmit = inet6_csk_xmit,
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.send_check = dccp_v6_send_check,
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@ -1122,6 +1113,10 @@ static int dccp_v6_destroy_sock(struct sock *sk)
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return inet6_destroy_sock(sk);
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}
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static struct timewait_sock_ops dccp6_timewait_sock_ops = {
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.twsk_obj_size = sizeof(struct dccp6_timewait_sock),
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};
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static struct proto dccp_v6_prot = {
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.name = "DCCPv6",
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||||
.owner = THIS_MODULE,
|
||||
|
|
|
|||
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Reference in New Issue