xref: /kernel/linux/linux-5.10/net/ipv6/ila/ila_main.c (revision 8c2ecf20) 
1// SPDX-License-Identifier: GPL-2.0
2#include <net/genetlink.h>
3#include <net/ila.h>
4#include <net/netns/generic.h>
5#include <uapi/linux/genetlink.h>
6#include "ila.h"
7
8static const struct nla_policy ila_nl_policy[ILA_ATTR_MAX + 1] = {
9	[ILA_ATTR_LOCATOR] = { .type = NLA_U64, },
10	[ILA_ATTR_LOCATOR_MATCH] = { .type = NLA_U64, },
11	[ILA_ATTR_IFINDEX] = { .type = NLA_U32, },
12	[ILA_ATTR_CSUM_MODE] = { .type = NLA_U8, },
13	[ILA_ATTR_IDENT_TYPE] = { .type = NLA_U8, },
14};
15
16static const struct genl_ops ila_nl_ops[] = {
17	{
18		.cmd = ILA_CMD_ADD,
19		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
20		.doit = ila_xlat_nl_cmd_add_mapping,
21		.flags = GENL_ADMIN_PERM,
22	},
23	{
24		.cmd = ILA_CMD_DEL,
25		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
26		.doit = ila_xlat_nl_cmd_del_mapping,
27		.flags = GENL_ADMIN_PERM,
28	},
29	{
30		.cmd = ILA_CMD_FLUSH,
31		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
32		.doit = ila_xlat_nl_cmd_flush,
33		.flags = GENL_ADMIN_PERM,
34	},
35	{
36		.cmd = ILA_CMD_GET,
37		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
38		.doit = ila_xlat_nl_cmd_get_mapping,
39		.start = ila_xlat_nl_dump_start,
40		.dumpit = ila_xlat_nl_dump,
41		.done = ila_xlat_nl_dump_done,
42	},
43};
44
45unsigned int ila_net_id;
46
47struct genl_family ila_nl_family __ro_after_init = {
48	.hdrsize	= 0,
49	.name		= ILA_GENL_NAME,
50	.version	= ILA_GENL_VERSION,
51	.maxattr	= ILA_ATTR_MAX,
52	.policy = ila_nl_policy,
53	.netnsok	= true,
54	.parallel_ops	= true,
55	.module		= THIS_MODULE,
56	.ops		= ila_nl_ops,
57	.n_ops		= ARRAY_SIZE(ila_nl_ops),
58};
59
60static __net_init int ila_init_net(struct net *net)
61{
62	int err;
63
64	err = ila_xlat_init_net(net);
65	if (err)
66		goto ila_xlat_init_fail;
67
68	return 0;
69
70ila_xlat_init_fail:
71	return err;
72}
73
74static __net_exit void ila_exit_net(struct net *net)
75{
76	ila_xlat_exit_net(net);
77}
78
79static struct pernet_operations ila_net_ops = {
80	.init = ila_init_net,
81	.exit = ila_exit_net,
82	.id   = &ila_net_id,
83	.size = sizeof(struct ila_net),
84};
85
86static int __init ila_init(void)
87{
88	int ret;
89
90	ret = register_pernet_device(&ila_net_ops);
91	if (ret)
92		goto register_device_fail;
93
94	ret = genl_register_family(&ila_nl_family);
95	if (ret)
96		goto register_family_fail;
97
98	ret = ila_lwt_init();
99	if (ret)
100		goto fail_lwt;
101
102	return 0;
103
104fail_lwt:
105	genl_unregister_family(&ila_nl_family);
106register_family_fail:
107	unregister_pernet_device(&ila_net_ops);
108register_device_fail:
109	return ret;
110}
111
112static void __exit ila_fini(void)
113{
114	ila_lwt_fini();
115	genl_unregister_family(&ila_nl_family);
116	unregister_pernet_device(&ila_net_ops);
117}
118
119module_init(ila_init);
120module_exit(ila_fini);
121MODULE_AUTHOR("Tom Herbert <tom@herbertland.com>");
122MODULE_LICENSE("GPL");
123MODULE_DESCRIPTION("IPv6: Identifier Locator Addressing (ILA)");
124