cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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udplite.c (2969B)

      1// SPDX-License-Identifier: GPL-2.0-or-later
      2/*
      3 *  UDPLITEv6   An implementation of the UDP-Lite protocol over IPv6.
      4 *              See also net/ipv4/udplite.c
      5 *
      6 *  Authors:    Gerrit Renker       <gerrit@erg.abdn.ac.uk>
      7 *
      8 *  Changes:
      9 *  Fixes:
     10 */
     11#include <linux/export.h>
     12#include <linux/proc_fs.h>
     13#include "udp_impl.h"
     14
     15static int udplitev6_rcv(struct sk_buff *skb)
     16{
     17	return __udp6_lib_rcv(skb, &udplite_table, IPPROTO_UDPLITE);
     18}
     19
     20static int udplitev6_err(struct sk_buff *skb,
     21			  struct inet6_skb_parm *opt,
     22			  u8 type, u8 code, int offset, __be32 info)
     23{
     24	return __udp6_lib_err(skb, opt, type, code, offset, info,
     25			      &udplite_table);
     26}
     27
     28static const struct inet6_protocol udplitev6_protocol = {
     29	.handler	=	udplitev6_rcv,
     30	.err_handler	=	udplitev6_err,
     31	.flags		=	INET6_PROTO_NOPOLICY|INET6_PROTO_FINAL,
     32};
     33
     34struct proto udplitev6_prot = {
     35	.name		   = "UDPLITEv6",
     36	.owner		   = THIS_MODULE,
     37	.close		   = udp_lib_close,
     38	.connect	   = ip6_datagram_connect,
     39	.disconnect	   = udp_disconnect,
     40	.ioctl		   = udp_ioctl,
     41	.init		   = udplite_sk_init,
     42	.destroy	   = udpv6_destroy_sock,
     43	.setsockopt	   = udpv6_setsockopt,
     44	.getsockopt	   = udpv6_getsockopt,
     45	.sendmsg	   = udpv6_sendmsg,
     46	.recvmsg	   = udpv6_recvmsg,
     47	.hash		   = udp_lib_hash,
     48	.unhash		   = udp_lib_unhash,
     49	.rehash		   = udp_v6_rehash,
     50	.get_port	   = udp_v6_get_port,
     51	.memory_allocated  = &udp_memory_allocated,
     52	.sysctl_mem	   = sysctl_udp_mem,
     53	.obj_size	   = sizeof(struct udp6_sock),
     54	.h.udp_table	   = &udplite_table,
     55};
     56
     57static struct inet_protosw udplite6_protosw = {
     58	.type		= SOCK_DGRAM,
     59	.protocol	= IPPROTO_UDPLITE,
     60	.prot		= &udplitev6_prot,
     61	.ops		= &inet6_dgram_ops,
     62	.flags		= INET_PROTOSW_PERMANENT,
     63};
     64
     65int __init udplitev6_init(void)
     66{
     67	int ret;
     68
     69	ret = inet6_add_protocol(&udplitev6_protocol, IPPROTO_UDPLITE);
     70	if (ret)
     71		goto out;
     72
     73	ret = inet6_register_protosw(&udplite6_protosw);
     74	if (ret)
     75		goto out_udplitev6_protocol;
     76out:
     77	return ret;
     78
     79out_udplitev6_protocol:
     80	inet6_del_protocol(&udplitev6_protocol, IPPROTO_UDPLITE);
     81	goto out;
     82}
     83
     84void udplitev6_exit(void)
     85{
     86	inet6_unregister_protosw(&udplite6_protosw);
     87	inet6_del_protocol(&udplitev6_protocol, IPPROTO_UDPLITE);
     88}
     89
     90#ifdef CONFIG_PROC_FS
     91static struct udp_seq_afinfo udplite6_seq_afinfo = {
     92	.family		= AF_INET6,
     93	.udp_table	= &udplite_table,
     94};
     95
     96static int __net_init udplite6_proc_init_net(struct net *net)
     97{
     98	if (!proc_create_net_data("udplite6", 0444, net->proc_net,
     99			&udp6_seq_ops, sizeof(struct udp_iter_state),
    100			&udplite6_seq_afinfo))
    101		return -ENOMEM;
    102	return 0;
    103}
    104
    105static void __net_exit udplite6_proc_exit_net(struct net *net)
    106{
    107	remove_proc_entry("udplite6", net->proc_net);
    108}
    109
    110static struct pernet_operations udplite6_net_ops = {
    111	.init = udplite6_proc_init_net,
    112	.exit = udplite6_proc_exit_net,
    113};
    114
    115int __init udplite6_proc_init(void)
    116{
    117	return register_pernet_subsys(&udplite6_net_ops);
    118}
    119
    120void udplite6_proc_exit(void)
    121{
    122	unregister_pernet_subsys(&udplite6_net_ops);
    123}
    124#endif