141 lines
3.4 KiB
C
141 lines
3.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* UDPLITEv6 An implementation of the UDP-Lite protocol over IPv6.
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* See also net/ipv4/udplite.c
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*
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* Authors: Gerrit Renker <gerrit@erg.abdn.ac.uk>
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*
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* Changes:
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* Fixes:
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*/
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#define pr_fmt(fmt) "UDPLite6: " fmt
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#include <linux/export.h>
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#include <linux/proc_fs.h>
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#include "udp_impl.h"
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static int udplitev6_sk_init(struct sock *sk)
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{
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udpv6_init_sock(sk);
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udp_sk(sk)->pcflag = UDPLITE_BIT;
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pr_warn_once("UDP-Lite is deprecated and scheduled to be removed in 2025, "
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"please contact the netdev mailing list\n");
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return 0;
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}
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static int udplitev6_rcv(struct sk_buff *skb)
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{
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return __udp6_lib_rcv(skb, &udplite_table, IPPROTO_UDPLITE);
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}
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static int udplitev6_err(struct sk_buff *skb,
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struct inet6_skb_parm *opt,
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u8 type, u8 code, int offset, __be32 info)
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{
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return __udp6_lib_err(skb, opt, type, code, offset, info,
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&udplite_table);
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}
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static const struct inet6_protocol udplitev6_protocol = {
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.handler = udplitev6_rcv,
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.err_handler = udplitev6_err,
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.flags = INET6_PROTO_NOPOLICY|INET6_PROTO_FINAL,
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};
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struct proto udplitev6_prot = {
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.name = "UDPLITEv6",
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.owner = THIS_MODULE,
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.close = udp_lib_close,
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.connect = ip6_datagram_connect,
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.disconnect = udp_disconnect,
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.ioctl = udp_ioctl,
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.init = udplitev6_sk_init,
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.destroy = udpv6_destroy_sock,
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.setsockopt = udpv6_setsockopt,
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.getsockopt = udpv6_getsockopt,
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.sendmsg = udpv6_sendmsg,
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.recvmsg = udpv6_recvmsg,
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.hash = udp_lib_hash,
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.unhash = udp_lib_unhash,
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.rehash = udp_v6_rehash,
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.get_port = udp_v6_get_port,
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.memory_allocated = &udp_memory_allocated,
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.per_cpu_fw_alloc = &udp_memory_per_cpu_fw_alloc,
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.sysctl_mem = sysctl_udp_mem,
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.sysctl_wmem_offset = offsetof(struct net, ipv4.sysctl_udp_wmem_min),
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.sysctl_rmem_offset = offsetof(struct net, ipv4.sysctl_udp_rmem_min),
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.obj_size = sizeof(struct udp6_sock),
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.h.udp_table = &udplite_table,
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};
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static struct inet_protosw udplite6_protosw = {
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.type = SOCK_DGRAM,
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.protocol = IPPROTO_UDPLITE,
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.prot = &udplitev6_prot,
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.ops = &inet6_dgram_ops,
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.flags = INET_PROTOSW_PERMANENT,
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};
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int __init udplitev6_init(void)
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{
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int ret;
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ret = inet6_add_protocol(&udplitev6_protocol, IPPROTO_UDPLITE);
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if (ret)
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goto out;
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ret = inet6_register_protosw(&udplite6_protosw);
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if (ret)
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goto out_udplitev6_protocol;
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out:
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return ret;
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out_udplitev6_protocol:
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inet6_del_protocol(&udplitev6_protocol, IPPROTO_UDPLITE);
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goto out;
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}
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void udplitev6_exit(void)
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{
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inet6_unregister_protosw(&udplite6_protosw);
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inet6_del_protocol(&udplitev6_protocol, IPPROTO_UDPLITE);
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}
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#ifdef CONFIG_PROC_FS
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static struct udp_seq_afinfo udplite6_seq_afinfo = {
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.family = AF_INET6,
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.udp_table = &udplite_table,
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};
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static int __net_init udplite6_proc_init_net(struct net *net)
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{
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if (!proc_create_net_data("udplite6", 0444, net->proc_net,
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&udp6_seq_ops, sizeof(struct udp_iter_state),
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&udplite6_seq_afinfo))
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return -ENOMEM;
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return 0;
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}
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static void __net_exit udplite6_proc_exit_net(struct net *net)
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{
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remove_proc_entry("udplite6", net->proc_net);
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}
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static struct pernet_operations udplite6_net_ops = {
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.init = udplite6_proc_init_net,
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.exit = udplite6_proc_exit_net,
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};
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int __init udplite6_proc_init(void)
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{
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return register_pernet_subsys(&udplite6_net_ops);
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}
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void udplite6_proc_exit(void)
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{
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unregister_pernet_subsys(&udplite6_net_ops);
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}
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#endif
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