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2874c5fd28
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
128 lines
3 KiB
C
128 lines
3 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* UDPLITE An implementation of the UDP-Lite protocol (RFC 3828).
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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) "UDPLite: " 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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struct udp_table udplite_table __read_mostly;
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EXPORT_SYMBOL(udplite_table);
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static int udplite_rcv(struct sk_buff *skb)
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{
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return __udp4_lib_rcv(skb, &udplite_table, IPPROTO_UDPLITE);
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}
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static int udplite_err(struct sk_buff *skb, u32 info)
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{
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return __udp4_lib_err(skb, info, &udplite_table);
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}
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static const struct net_protocol udplite_protocol = {
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.handler = udplite_rcv,
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.err_handler = udplite_err,
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.no_policy = 1,
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.netns_ok = 1,
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};
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struct proto udplite_prot = {
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.name = "UDP-Lite",
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.owner = THIS_MODULE,
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.close = udp_lib_close,
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.connect = ip4_datagram_connect,
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.disconnect = udp_disconnect,
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.ioctl = udp_ioctl,
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.init = udplite_sk_init,
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.destroy = udp_destroy_sock,
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.setsockopt = udp_setsockopt,
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.getsockopt = udp_getsockopt,
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.sendmsg = udp_sendmsg,
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.recvmsg = udp_recvmsg,
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.sendpage = udp_sendpage,
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.hash = udp_lib_hash,
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.unhash = udp_lib_unhash,
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.rehash = udp_v4_rehash,
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.get_port = udp_v4_get_port,
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.memory_allocated = &udp_memory_allocated,
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.sysctl_mem = sysctl_udp_mem,
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.obj_size = sizeof(struct udp_sock),
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.h.udp_table = &udplite_table,
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#ifdef CONFIG_COMPAT
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.compat_setsockopt = compat_udp_setsockopt,
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.compat_getsockopt = compat_udp_getsockopt,
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#endif
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};
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EXPORT_SYMBOL(udplite_prot);
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static struct inet_protosw udplite4_protosw = {
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.type = SOCK_DGRAM,
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.protocol = IPPROTO_UDPLITE,
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.prot = &udplite_prot,
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.ops = &inet_dgram_ops,
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.flags = INET_PROTOSW_PERMANENT,
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};
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#ifdef CONFIG_PROC_FS
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static struct udp_seq_afinfo udplite4_seq_afinfo = {
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.family = AF_INET,
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.udp_table = &udplite_table,
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};
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static int __net_init udplite4_proc_init_net(struct net *net)
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{
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if (!proc_create_net_data("udplite", 0444, net->proc_net, &udp_seq_ops,
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sizeof(struct udp_iter_state), &udplite4_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 udplite4_proc_exit_net(struct net *net)
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{
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remove_proc_entry("udplite", net->proc_net);
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}
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static struct pernet_operations udplite4_net_ops = {
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.init = udplite4_proc_init_net,
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.exit = udplite4_proc_exit_net,
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};
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static __init int udplite4_proc_init(void)
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{
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return register_pernet_subsys(&udplite4_net_ops);
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}
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#else
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static inline int udplite4_proc_init(void)
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{
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return 0;
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}
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#endif
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void __init udplite4_register(void)
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{
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udp_table_init(&udplite_table, "UDP-Lite");
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if (proto_register(&udplite_prot, 1))
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goto out_register_err;
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if (inet_add_protocol(&udplite_protocol, IPPROTO_UDPLITE) < 0)
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goto out_unregister_proto;
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inet_register_protosw(&udplite4_protosw);
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if (udplite4_proc_init())
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pr_err("%s: Cannot register /proc!\n", __func__);
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return;
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out_unregister_proto:
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proto_unregister(&udplite_prot);
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out_register_err:
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pr_crit("%s: Cannot add UDP-Lite protocol\n", __func__);
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}
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