1// SPDX-License-Identifier: GPL-2.0
2#include <net/genetlink.h>
3#include <net/netns/generic.h>
4#include <uapi/linux/genetlink.h>
5#include "ila.h"
6
7static const struct nla_policy ila_nl_policy[ILA_ATTR_MAX + 1] = {
8	[ILA_ATTR_LOCATOR] = { .type = NLA_U64, },
9	[ILA_ATTR_LOCATOR_MATCH] = { .type = NLA_U64, },
10	[ILA_ATTR_IFINDEX] = { .type = NLA_U32, },
11	[ILA_ATTR_CSUM_MODE] = { .type = NLA_U8, },
12	[ILA_ATTR_IDENT_TYPE] = { .type = NLA_U8, },
13};
14
15static const struct genl_ops ila_nl_ops[] = {
16	{
17		.cmd = ILA_CMD_ADD,
18		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
19		.doit = ila_xlat_nl_cmd_add_mapping,
20		.flags = GENL_ADMIN_PERM,
21	},
22	{
23		.cmd = ILA_CMD_DEL,
24		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
25		.doit = ila_xlat_nl_cmd_del_mapping,
26		.flags = GENL_ADMIN_PERM,
27	},
28	{
29		.cmd = ILA_CMD_FLUSH,
30		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
31		.doit = ila_xlat_nl_cmd_flush,
32		.flags = GENL_ADMIN_PERM,
33	},
34	{
35		.cmd = ILA_CMD_GET,
36		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
37		.doit = ila_xlat_nl_cmd_get_mapping,
38		.start = ila_xlat_nl_dump_start,
39		.dumpit = ila_xlat_nl_dump,
40		.done = ila_xlat_nl_dump_done,
41	},
42};
43
44unsigned int ila_net_id;
45
46struct genl_family ila_nl_family __ro_after_init = {
47	.hdrsize	= 0,
48	.name		= ILA_GENL_NAME,
49	.version	= ILA_GENL_VERSION,
50	.maxattr	= ILA_ATTR_MAX,
51	.policy = ila_nl_policy,
52	.netnsok	= true,
53	.parallel_ops	= true,
54	.module		= THIS_MODULE,
55	.ops		= ila_nl_ops,
56	.n_ops		= ARRAY_SIZE(ila_nl_ops),
57	.resv_start_op	= ILA_CMD_FLUSH + 1,
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