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
7 static 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
15 static 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
44 unsigned int ila_net_id;
45
46 struct 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
60 static __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
70 ila_xlat_init_fail:
71 return err;
72 }
73
74 static __net_exit void ila_pre_exit_net(struct net *net)
75 {
76 ila_xlat_pre_exit_net(net);
77 }
78
79 static __net_exit void ila_exit_net(struct net *net)
80 {
81 ila_xlat_exit_net(net);
82 }
83
84 static struct pernet_operations ila_net_ops = {
85 .init = ila_init_net,
86 .pre_exit = ila_pre_exit_net,
87 .exit = ila_exit_net,
88 .id = &ila_net_id,
89 .size = sizeof(struct ila_net),
90 };
91
92 static int __init ila_init(void)
93 {
94 int ret;
95
96 ret = register_pernet_device(&ila_net_ops);
97 if (ret)
98 goto register_device_fail;
99
100 ret = genl_register_family(&ila_nl_family);
101 if (ret)
102 goto register_family_fail;
103
104 ret = ila_lwt_init();
105 if (ret)
106 goto fail_lwt;
107
108 return 0;
109
110 fail_lwt:
111 genl_unregister_family(&ila_nl_family);
112 register_family_fail:
113 unregister_pernet_device(&ila_net_ops);
114 register_device_fail:
115 return ret;
116 }
117
118 static void __exit ila_fini(void)
119 {
120 ila_lwt_fini();
121 genl_unregister_family(&ila_nl_family);
122 unregister_pernet_device(&ila_net_ops);
123 }
124
125 module_init(ila_init);
126 module_exit(ila_fini);
127 MODULE_AUTHOR("Tom Herbert <tom@herbertland.com>");
128 MODULE_LICENSE("GPL");
129 MODULE_DESCRIPTION("IPv6: Identifier Locator Addressing (ILA)");
130
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.