| /* |
| * net/dccp/proto.c |
| * |
| * An implementation of the DCCP protocol |
| * Arnaldo Carvalho de Melo <acme@conectiva.com.br> |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| |
| #include <linux/config.h> |
| #include <linux/dccp.h> |
| #include <linux/module.h> |
| #include <linux/types.h> |
| #include <linux/sched.h> |
| #include <linux/kernel.h> |
| #include <linux/skbuff.h> |
| #include <linux/netdevice.h> |
| #include <linux/in.h> |
| #include <linux/if_arp.h> |
| #include <linux/init.h> |
| #include <linux/random.h> |
| #include <net/checksum.h> |
| |
| #include <net/inet_common.h> |
| #include <net/ip.h> |
| #include <net/protocol.h> |
| #include <net/sock.h> |
| #include <net/xfrm.h> |
| |
| #include <asm/semaphore.h> |
| #include <linux/spinlock.h> |
| #include <linux/timer.h> |
| #include <linux/delay.h> |
| #include <linux/poll.h> |
| #include <linux/dccp.h> |
| |
| #include "ccid.h" |
| #include "dccp.h" |
| |
| DEFINE_SNMP_STAT(struct dccp_mib, dccp_statistics); |
| |
| atomic_t dccp_orphan_count = ATOMIC_INIT(0); |
| |
| static struct net_protocol dccp_protocol = { |
| .handler = dccp_v4_rcv, |
| .err_handler = dccp_v4_err, |
| }; |
| |
| const char *dccp_packet_name(const int type) |
| { |
| static const char *dccp_packet_names[] = { |
| [DCCP_PKT_REQUEST] = "REQUEST", |
| [DCCP_PKT_RESPONSE] = "RESPONSE", |
| [DCCP_PKT_DATA] = "DATA", |
| [DCCP_PKT_ACK] = "ACK", |
| [DCCP_PKT_DATAACK] = "DATAACK", |
| [DCCP_PKT_CLOSEREQ] = "CLOSEREQ", |
| [DCCP_PKT_CLOSE] = "CLOSE", |
| [DCCP_PKT_RESET] = "RESET", |
| [DCCP_PKT_SYNC] = "SYNC", |
| [DCCP_PKT_SYNCACK] = "SYNCACK", |
| }; |
| |
| if (type >= DCCP_NR_PKT_TYPES) |
| return "INVALID"; |
| else |
| return dccp_packet_names[type]; |
| } |
| |
| EXPORT_SYMBOL_GPL(dccp_packet_name); |
| |
| const char *dccp_state_name(const int state) |
| { |
| static char *dccp_state_names[] = { |
| [DCCP_OPEN] = "OPEN", |
| [DCCP_REQUESTING] = "REQUESTING", |
| [DCCP_PARTOPEN] = "PARTOPEN", |
| [DCCP_LISTEN] = "LISTEN", |
| [DCCP_RESPOND] = "RESPOND", |
| [DCCP_CLOSING] = "CLOSING", |
| [DCCP_TIME_WAIT] = "TIME_WAIT", |
| [DCCP_CLOSED] = "CLOSED", |
| }; |
| |
| if (state >= DCCP_MAX_STATES) |
| return "INVALID STATE!"; |
| else |
| return dccp_state_names[state]; |
| } |
| |
| EXPORT_SYMBOL_GPL(dccp_state_name); |
| |
| static inline int dccp_listen_start(struct sock *sk) |
| { |
| dccp_sk(sk)->dccps_role = DCCP_ROLE_LISTEN; |
| return inet_csk_listen_start(sk, TCP_SYNQ_HSIZE); |
| } |
| |
| int dccp_disconnect(struct sock *sk, int flags) |
| { |
| struct inet_connection_sock *icsk = inet_csk(sk); |
| struct inet_sock *inet = inet_sk(sk); |
| int err = 0; |
| const int old_state = sk->sk_state; |
| |
| if (old_state != DCCP_CLOSED) |
| dccp_set_state(sk, DCCP_CLOSED); |
| |
| /* ABORT function of RFC793 */ |
| if (old_state == DCCP_LISTEN) { |
| inet_csk_listen_stop(sk); |
| /* FIXME: do the active reset thing */ |
| } else if (old_state == DCCP_REQUESTING) |
| sk->sk_err = ECONNRESET; |
| |
| dccp_clear_xmit_timers(sk); |
| __skb_queue_purge(&sk->sk_receive_queue); |
| if (sk->sk_send_head != NULL) { |
| __kfree_skb(sk->sk_send_head); |
| sk->sk_send_head = NULL; |
| } |
| |
| inet->dport = 0; |
| |
| if (!(sk->sk_userlocks & SOCK_BINDADDR_LOCK)) |
| inet_reset_saddr(sk); |
| |
| sk->sk_shutdown = 0; |
| sock_reset_flag(sk, SOCK_DONE); |
| |
| icsk->icsk_backoff = 0; |
| inet_csk_delack_init(sk); |
| __sk_dst_reset(sk); |
| |
| BUG_TRAP(!inet->num || icsk->icsk_bind_hash); |
| |
| sk->sk_error_report(sk); |
| return err; |
| } |
| |
| int dccp_ioctl(struct sock *sk, int cmd, unsigned long arg) |
| { |
| dccp_pr_debug("entry\n"); |
| return -ENOIOCTLCMD; |
| } |
| |
| int dccp_setsockopt(struct sock *sk, int level, int optname, |
| char __user *optval, int optlen) |
| { |
| dccp_pr_debug("entry\n"); |
| |
| if (level != SOL_DCCP) |
| return ip_setsockopt(sk, level, optname, optval, optlen); |
| |
| return -EOPNOTSUPP; |
| } |
| |
| int dccp_getsockopt(struct sock *sk, int level, int optname, |
| char __user *optval, int __user *optlen) |
| { |
| dccp_pr_debug("entry\n"); |
| |
| if (level != SOL_DCCP) |
| return ip_getsockopt(sk, level, optname, optval, optlen); |
| |
| return -EOPNOTSUPP; |
| } |
| |
| int dccp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, |
| size_t len) |
| { |
| const struct dccp_sock *dp = dccp_sk(sk); |
| const int flags = msg->msg_flags; |
| const int noblock = flags & MSG_DONTWAIT; |
| struct sk_buff *skb; |
| int rc, size; |
| long timeo; |
| |
| if (len > dp->dccps_mss_cache) |
| return -EMSGSIZE; |
| |
| lock_sock(sk); |
| timeo = sock_sndtimeo(sk, noblock); |
| |
| /* |
| * We have to use sk_stream_wait_connect here to set sk_write_pending, |
| * so that the trick in dccp_rcv_request_sent_state_process. |
| */ |
| /* Wait for a connection to finish. */ |
| if ((1 << sk->sk_state) & ~(DCCPF_OPEN | DCCPF_PARTOPEN | DCCPF_CLOSING)) |
| if ((rc = sk_stream_wait_connect(sk, &timeo)) != 0) |
| goto out_release; |
| |
| size = sk->sk_prot->max_header + len; |
| release_sock(sk); |
| skb = sock_alloc_send_skb(sk, size, noblock, &rc); |
| lock_sock(sk); |
| if (skb == NULL) |
| goto out_release; |
| |
| skb_reserve(skb, sk->sk_prot->max_header); |
| rc = memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len); |
| if (rc != 0) |
| goto out_discard; |
| |
| rc = dccp_write_xmit(sk, skb, len); |
| out_release: |
| release_sock(sk); |
| return rc ? : len; |
| out_discard: |
| kfree_skb(skb); |
| goto out_release; |
| } |
| |
| int dccp_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, |
| size_t len, int nonblock, int flags, int *addr_len) |
| { |
| const struct dccp_hdr *dh; |
| long timeo; |
| |
| lock_sock(sk); |
| |
| if (sk->sk_state == DCCP_LISTEN) { |
| len = -ENOTCONN; |
| goto out; |
| } |
| |
| timeo = sock_rcvtimeo(sk, nonblock); |
| |
| do { |
| struct sk_buff *skb = skb_peek(&sk->sk_receive_queue); |
| |
| if (skb == NULL) |
| goto verify_sock_status; |
| |
| dh = dccp_hdr(skb); |
| |
| if (dh->dccph_type == DCCP_PKT_DATA || |
| dh->dccph_type == DCCP_PKT_DATAACK) |
| goto found_ok_skb; |
| |
| if (dh->dccph_type == DCCP_PKT_RESET || |
| dh->dccph_type == DCCP_PKT_CLOSE) { |
| dccp_pr_debug("found fin ok!\n"); |
| len = 0; |
| goto found_fin_ok; |
| } |
| dccp_pr_debug("packet_type=%s\n", |
| dccp_packet_name(dh->dccph_type)); |
| sk_eat_skb(sk, skb); |
| verify_sock_status: |
| if (sock_flag(sk, SOCK_DONE)) { |
| len = 0; |
| break; |
| } |
| |
| if (sk->sk_err) { |
| len = sock_error(sk); |
| break; |
| } |
| |
| if (sk->sk_shutdown & RCV_SHUTDOWN) { |
| len = 0; |
| break; |
| } |
| |
| if (sk->sk_state == DCCP_CLOSED) { |
| if (!sock_flag(sk, SOCK_DONE)) { |
| /* This occurs when user tries to read |
| * from never connected socket. |
| */ |
| len = -ENOTCONN; |
| break; |
| } |
| len = 0; |
| break; |
| } |
| |
| if (!timeo) { |
| len = -EAGAIN; |
| break; |
| } |
| |
| if (signal_pending(current)) { |
| len = sock_intr_errno(timeo); |
| break; |
| } |
| |
| sk_wait_data(sk, &timeo); |
| continue; |
| found_ok_skb: |
| if (len > skb->len) |
| len = skb->len; |
| else if (len < skb->len) |
| msg->msg_flags |= MSG_TRUNC; |
| |
| if (skb_copy_datagram_iovec(skb, 0, msg->msg_iov, len)) { |
| /* Exception. Bailout! */ |
| len = -EFAULT; |
| break; |
| } |
| found_fin_ok: |
| if (!(flags & MSG_PEEK)) |
| sk_eat_skb(sk, skb); |
| break; |
| } while (1); |
| out: |
| release_sock(sk); |
| return len; |
| } |
| |
| static int inet_dccp_listen(struct socket *sock, int backlog) |
| { |
| struct sock *sk = sock->sk; |
| unsigned char old_state; |
| int err; |
| |
| lock_sock(sk); |
| |
| err = -EINVAL; |
| if (sock->state != SS_UNCONNECTED || sock->type != SOCK_DCCP) |
| goto out; |
| |
| old_state = sk->sk_state; |
| if (!((1 << old_state) & (DCCPF_CLOSED | DCCPF_LISTEN))) |
| goto out; |
| |
| /* Really, if the socket is already in listen state |
| * we can only allow the backlog to be adjusted. |
| */ |
| if (old_state != DCCP_LISTEN) { |
| /* |
| * FIXME: here it probably should be sk->sk_prot->listen_start |
| * see tcp_listen_start |
| */ |
| err = dccp_listen_start(sk); |
| if (err) |
| goto out; |
| } |
| sk->sk_max_ack_backlog = backlog; |
| err = 0; |
| |
| out: |
| release_sock(sk); |
| return err; |
| } |
| |
| static const unsigned char dccp_new_state[] = { |
| /* current state: new state: action: */ |
| [0] = DCCP_CLOSED, |
| [DCCP_OPEN] = DCCP_CLOSING | DCCP_ACTION_FIN, |
| [DCCP_REQUESTING] = DCCP_CLOSED, |
| [DCCP_PARTOPEN] = DCCP_CLOSING | DCCP_ACTION_FIN, |
| [DCCP_LISTEN] = DCCP_CLOSED, |
| [DCCP_RESPOND] = DCCP_CLOSED, |
| [DCCP_CLOSING] = DCCP_CLOSED, |
| [DCCP_TIME_WAIT] = DCCP_CLOSED, |
| [DCCP_CLOSED] = DCCP_CLOSED, |
| }; |
| |
| static int dccp_close_state(struct sock *sk) |
| { |
| const int next = dccp_new_state[sk->sk_state]; |
| const int ns = next & DCCP_STATE_MASK; |
| |
| if (ns != sk->sk_state) |
| dccp_set_state(sk, ns); |
| |
| return next & DCCP_ACTION_FIN; |
| } |
| |
| void dccp_close(struct sock *sk, long timeout) |
| { |
| struct sk_buff *skb; |
| |
| lock_sock(sk); |
| |
| sk->sk_shutdown = SHUTDOWN_MASK; |
| |
| if (sk->sk_state == DCCP_LISTEN) { |
| dccp_set_state(sk, DCCP_CLOSED); |
| |
| /* Special case. */ |
| inet_csk_listen_stop(sk); |
| |
| goto adjudge_to_death; |
| } |
| |
| /* |
| * We need to flush the recv. buffs. We do this only on the |
| * descriptor close, not protocol-sourced closes, because the |
| *reader process may not have drained the data yet! |
| */ |
| /* FIXME: check for unread data */ |
| while ((skb = __skb_dequeue(&sk->sk_receive_queue)) != NULL) { |
| __kfree_skb(skb); |
| } |
| |
| if (sock_flag(sk, SOCK_LINGER) && !sk->sk_lingertime) { |
| /* Check zero linger _after_ checking for unread data. */ |
| sk->sk_prot->disconnect(sk, 0); |
| } else if (dccp_close_state(sk)) { |
| dccp_send_close(sk); |
| } |
| |
| sk_stream_wait_close(sk, timeout); |
| |
| adjudge_to_death: |
| release_sock(sk); |
| /* |
| * Now socket is owned by kernel and we acquire BH lock |
| * to finish close. No need to check for user refs. |
| */ |
| local_bh_disable(); |
| bh_lock_sock(sk); |
| BUG_TRAP(!sock_owned_by_user(sk)); |
| |
| sock_hold(sk); |
| sock_orphan(sk); |
| |
| if (sk->sk_state != DCCP_CLOSED) |
| dccp_set_state(sk, DCCP_CLOSED); |
| |
| atomic_inc(&dccp_orphan_count); |
| if (sk->sk_state == DCCP_CLOSED) |
| inet_csk_destroy_sock(sk); |
| |
| /* Otherwise, socket is reprieved until protocol close. */ |
| |
| bh_unlock_sock(sk); |
| local_bh_enable(); |
| sock_put(sk); |
| } |
| |
| void dccp_shutdown(struct sock *sk, int how) |
| { |
| dccp_pr_debug("entry\n"); |
| } |
| |
| static struct proto_ops inet_dccp_ops = { |
| .family = PF_INET, |
| .owner = THIS_MODULE, |
| .release = inet_release, |
| .bind = inet_bind, |
| .connect = inet_stream_connect, |
| .socketpair = sock_no_socketpair, |
| .accept = inet_accept, |
| .getname = inet_getname, |
| .poll = sock_no_poll, |
| .ioctl = inet_ioctl, |
| /* FIXME: work on inet_listen to rename it to sock_common_listen */ |
| .listen = inet_dccp_listen, |
| .shutdown = inet_shutdown, |
| .setsockopt = sock_common_setsockopt, |
| .getsockopt = sock_common_getsockopt, |
| .sendmsg = inet_sendmsg, |
| .recvmsg = sock_common_recvmsg, |
| .mmap = sock_no_mmap, |
| .sendpage = sock_no_sendpage, |
| }; |
| |
| extern struct net_proto_family inet_family_ops; |
| |
| static struct inet_protosw dccp_v4_protosw = { |
| .type = SOCK_DCCP, |
| .protocol = IPPROTO_DCCP, |
| .prot = &dccp_v4_prot, |
| .ops = &inet_dccp_ops, |
| .capability = -1, |
| .no_check = 0, |
| .flags = 0, |
| }; |
| |
| /* |
| * This is the global socket data structure used for responding to |
| * the Out-of-the-blue (OOTB) packets. A control sock will be created |
| * for this socket at the initialization time. |
| */ |
| struct socket *dccp_ctl_socket; |
| |
| static char dccp_ctl_socket_err_msg[] __initdata = |
| KERN_ERR "DCCP: Failed to create the control socket.\n"; |
| |
| static int __init dccp_ctl_sock_init(void) |
| { |
| int rc = sock_create_kern(PF_INET, SOCK_DCCP, IPPROTO_DCCP, |
| &dccp_ctl_socket); |
| if (rc < 0) |
| printk(dccp_ctl_socket_err_msg); |
| else { |
| dccp_ctl_socket->sk->sk_allocation = GFP_ATOMIC; |
| inet_sk(dccp_ctl_socket->sk)->uc_ttl = -1; |
| |
| /* Unhash it so that IP input processing does not even |
| * see it, we do not wish this socket to see incoming |
| * packets. |
| */ |
| dccp_ctl_socket->sk->sk_prot->unhash(dccp_ctl_socket->sk); |
| } |
| |
| return rc; |
| } |
| |
| #ifdef CONFIG_IP_DCCP_UNLOAD_HACK |
| void dccp_ctl_sock_exit(void) |
| { |
| if (dccp_ctl_socket != NULL) { |
| sock_release(dccp_ctl_socket); |
| dccp_ctl_socket = NULL; |
| } |
| } |
| |
| EXPORT_SYMBOL_GPL(dccp_ctl_sock_exit); |
| #endif |
| |
| static int __init init_dccp_v4_mibs(void) |
| { |
| int rc = -ENOMEM; |
| |
| dccp_statistics[0] = alloc_percpu(struct dccp_mib); |
| if (dccp_statistics[0] == NULL) |
| goto out; |
| |
| dccp_statistics[1] = alloc_percpu(struct dccp_mib); |
| if (dccp_statistics[1] == NULL) |
| goto out_free_one; |
| |
| rc = 0; |
| out: |
| return rc; |
| out_free_one: |
| free_percpu(dccp_statistics[0]); |
| dccp_statistics[0] = NULL; |
| goto out; |
| |
| } |
| |
| static int thash_entries; |
| module_param(thash_entries, int, 0444); |
| MODULE_PARM_DESC(thash_entries, "Number of ehash buckets"); |
| |
| #ifdef CONFIG_IP_DCCP_DEBUG |
| int dccp_debug; |
| module_param(dccp_debug, int, 0444); |
| MODULE_PARM_DESC(dccp_debug, "Enable debug messages"); |
| #endif |
| |
| static int __init dccp_init(void) |
| { |
| unsigned long goal; |
| int ehash_order, bhash_order, i; |
| int rc = proto_register(&dccp_v4_prot, 1); |
| |
| if (rc) |
| goto out; |
| |
| dccp_hashinfo.bind_bucket_cachep = |
| kmem_cache_create("dccp_bind_bucket", |
| sizeof(struct inet_bind_bucket), 0, |
| SLAB_HWCACHE_ALIGN, NULL, NULL); |
| if (!dccp_hashinfo.bind_bucket_cachep) |
| goto out_proto_unregister; |
| |
| /* |
| * Size and allocate the main established and bind bucket |
| * hash tables. |
| * |
| * The methodology is similar to that of the buffer cache. |
| */ |
| if (num_physpages >= (128 * 1024)) |
| goal = num_physpages >> (21 - PAGE_SHIFT); |
| else |
| goal = num_physpages >> (23 - PAGE_SHIFT); |
| |
| if (thash_entries) |
| goal = (thash_entries * |
| sizeof(struct inet_ehash_bucket)) >> PAGE_SHIFT; |
| for (ehash_order = 0; (1UL << ehash_order) < goal; ehash_order++) |
| ; |
| do { |
| dccp_hashinfo.ehash_size = (1UL << ehash_order) * PAGE_SIZE / |
| sizeof(struct inet_ehash_bucket); |
| dccp_hashinfo.ehash_size >>= 1; |
| while (dccp_hashinfo.ehash_size & |
| (dccp_hashinfo.ehash_size - 1)) |
| dccp_hashinfo.ehash_size--; |
| dccp_hashinfo.ehash = (struct inet_ehash_bucket *) |
| __get_free_pages(GFP_ATOMIC, ehash_order); |
| } while (!dccp_hashinfo.ehash && --ehash_order > 0); |
| |
| if (!dccp_hashinfo.ehash) { |
| printk(KERN_CRIT "Failed to allocate DCCP " |
| "established hash table\n"); |
| goto out_free_bind_bucket_cachep; |
| } |
| |
| for (i = 0; i < (dccp_hashinfo.ehash_size << 1); i++) { |
| rwlock_init(&dccp_hashinfo.ehash[i].lock); |
| INIT_HLIST_HEAD(&dccp_hashinfo.ehash[i].chain); |
| } |
| |
| bhash_order = ehash_order; |
| |
| do { |
| dccp_hashinfo.bhash_size = (1UL << bhash_order) * PAGE_SIZE / |
| sizeof(struct inet_bind_hashbucket); |
| if ((dccp_hashinfo.bhash_size > (64 * 1024)) && |
| bhash_order > 0) |
| continue; |
| dccp_hashinfo.bhash = (struct inet_bind_hashbucket *) |
| __get_free_pages(GFP_ATOMIC, bhash_order); |
| } while (!dccp_hashinfo.bhash && --bhash_order >= 0); |
| |
| if (!dccp_hashinfo.bhash) { |
| printk(KERN_CRIT "Failed to allocate DCCP bind hash table\n"); |
| goto out_free_dccp_ehash; |
| } |
| |
| for (i = 0; i < dccp_hashinfo.bhash_size; i++) { |
| spin_lock_init(&dccp_hashinfo.bhash[i].lock); |
| INIT_HLIST_HEAD(&dccp_hashinfo.bhash[i].chain); |
| } |
| |
| if (init_dccp_v4_mibs()) |
| goto out_free_dccp_bhash; |
| |
| rc = -EAGAIN; |
| if (inet_add_protocol(&dccp_protocol, IPPROTO_DCCP)) |
| goto out_free_dccp_v4_mibs; |
| |
| inet_register_protosw(&dccp_v4_protosw); |
| |
| rc = dccp_ctl_sock_init(); |
| if (rc) |
| goto out_unregister_protosw; |
| out: |
| return rc; |
| out_unregister_protosw: |
| inet_unregister_protosw(&dccp_v4_protosw); |
| inet_del_protocol(&dccp_protocol, IPPROTO_DCCP); |
| out_free_dccp_v4_mibs: |
| free_percpu(dccp_statistics[0]); |
| free_percpu(dccp_statistics[1]); |
| dccp_statistics[0] = dccp_statistics[1] = NULL; |
| out_free_dccp_bhash: |
| free_pages((unsigned long)dccp_hashinfo.bhash, bhash_order); |
| dccp_hashinfo.bhash = NULL; |
| out_free_dccp_ehash: |
| free_pages((unsigned long)dccp_hashinfo.ehash, ehash_order); |
| dccp_hashinfo.ehash = NULL; |
| out_free_bind_bucket_cachep: |
| kmem_cache_destroy(dccp_hashinfo.bind_bucket_cachep); |
| dccp_hashinfo.bind_bucket_cachep = NULL; |
| out_proto_unregister: |
| proto_unregister(&dccp_v4_prot); |
| goto out; |
| } |
| |
| static const char dccp_del_proto_err_msg[] __exitdata = |
| KERN_ERR "can't remove dccp net_protocol\n"; |
| |
| static void __exit dccp_fini(void) |
| { |
| inet_unregister_protosw(&dccp_v4_protosw); |
| |
| if (inet_del_protocol(&dccp_protocol, IPPROTO_DCCP) < 0) |
| printk(dccp_del_proto_err_msg); |
| |
| free_percpu(dccp_statistics[0]); |
| free_percpu(dccp_statistics[1]); |
| free_pages((unsigned long)dccp_hashinfo.bhash, |
| get_order(dccp_hashinfo.bhash_size * |
| sizeof(struct inet_bind_hashbucket))); |
| free_pages((unsigned long)dccp_hashinfo.ehash, |
| get_order(dccp_hashinfo.ehash_size * |
| sizeof(struct inet_ehash_bucket))); |
| kmem_cache_destroy(dccp_hashinfo.bind_bucket_cachep); |
| proto_unregister(&dccp_v4_prot); |
| } |
| |
| module_init(dccp_init); |
| module_exit(dccp_fini); |
| |
| /* |
| * __stringify doesn't likes enums, so use SOCK_DCCP (6) and IPPROTO_DCCP (33) |
| * values directly, Also cover the case where the protocol is not specified, |
| * i.e. net-pf-PF_INET-proto-0-type-SOCK_DCCP |
| */ |
| MODULE_ALIAS("net-pf-" __stringify(PF_INET) "-proto-33-type-6"); |
| MODULE_ALIAS("net-pf-" __stringify(PF_INET) "-proto-0-type-6"); |
| MODULE_LICENSE("GPL"); |
| MODULE_AUTHOR("Arnaldo Carvalho de Melo <acme@conectiva.com.br>"); |
| MODULE_DESCRIPTION("DCCP - Datagram Congestion Controlled Protocol"); |