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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xfrm_sysctl.c (1915B)

      1// SPDX-License-Identifier: GPL-2.0
      2#include <linux/sysctl.h>
      3#include <linux/slab.h>
      4#include <net/net_namespace.h>
      5#include <net/xfrm.h>
      6
      7static void __net_init __xfrm_sysctl_init(struct net *net)
      8{
      9	net->xfrm.sysctl_aevent_etime = XFRM_AE_ETIME;
     10	net->xfrm.sysctl_aevent_rseqth = XFRM_AE_SEQT_SIZE;
     11	net->xfrm.sysctl_larval_drop = 1;
     12	net->xfrm.sysctl_acq_expires = 30;
     13}
     14
     15#ifdef CONFIG_SYSCTL
     16static struct ctl_table xfrm_table[] = {
     17	{
     18		.procname	= "xfrm_aevent_etime",
     19		.maxlen		= sizeof(u32),
     20		.mode		= 0644,
     21		.proc_handler	= proc_douintvec
     22	},
     23	{
     24		.procname	= "xfrm_aevent_rseqth",
     25		.maxlen		= sizeof(u32),
     26		.mode		= 0644,
     27		.proc_handler	= proc_douintvec
     28	},
     29	{
     30		.procname	= "xfrm_larval_drop",
     31		.maxlen		= sizeof(int),
     32		.mode		= 0644,
     33		.proc_handler	= proc_dointvec
     34	},
     35	{
     36		.procname	= "xfrm_acq_expires",
     37		.maxlen		= sizeof(int),
     38		.mode		= 0644,
     39		.proc_handler	= proc_dointvec
     40	},
     41	{}
     42};
     43
     44int __net_init xfrm_sysctl_init(struct net *net)
     45{
     46	struct ctl_table *table;
     47
     48	__xfrm_sysctl_init(net);
     49
     50	table = kmemdup(xfrm_table, sizeof(xfrm_table), GFP_KERNEL);
     51	if (!table)
     52		goto out_kmemdup;
     53	table[0].data = &net->xfrm.sysctl_aevent_etime;
     54	table[1].data = &net->xfrm.sysctl_aevent_rseqth;
     55	table[2].data = &net->xfrm.sysctl_larval_drop;
     56	table[3].data = &net->xfrm.sysctl_acq_expires;
     57
     58	/* Don't export sysctls to unprivileged users */
     59	if (net->user_ns != &init_user_ns)
     60		table[0].procname = NULL;
     61
     62	net->xfrm.sysctl_hdr = register_net_sysctl(net, "net/core", table);
     63	if (!net->xfrm.sysctl_hdr)
     64		goto out_register;
     65	return 0;
     66
     67out_register:
     68	kfree(table);
     69out_kmemdup:
     70	return -ENOMEM;
     71}
     72
     73void __net_exit xfrm_sysctl_fini(struct net *net)
     74{
     75	struct ctl_table *table;
     76
     77	table = net->xfrm.sysctl_hdr->ctl_table_arg;
     78	unregister_net_sysctl_table(net->xfrm.sysctl_hdr);
     79	kfree(table);
     80}
     81#else
     82int __net_init xfrm_sysctl_init(struct net *net)
     83{
     84	__xfrm_sysctl_init(net);
     85	return 0;
     86}
     87#endif