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
8 static 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
16 static 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
45 unsigned int ila_net_id;
46
47 struct 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 .resv_start_op = ILA_CMD_FLUSH + 1,
59 };
60
ila_init_net(struct net * net)61 static __net_init int ila_init_net(struct net *net)
62 {
63 int err;
64
65 err = ila_xlat_init_net(net);
66 if (err)
67 goto ila_xlat_init_fail;
68
69 return 0;
70
71 ila_xlat_init_fail:
72 return err;
73 }
74
ila_exit_net(struct net * net)75 static __net_exit void ila_exit_net(struct net *net)
76 {
77 ila_xlat_exit_net(net);
78 }
79
80 static struct pernet_operations ila_net_ops = {
81 .init = ila_init_net,
82 .exit = ila_exit_net,
83 .id = &ila_net_id,
84 .size = sizeof(struct ila_net),
85 };
86
ila_init(void)87 static int __init ila_init(void)
88 {
89 int ret;
90
91 ret = register_pernet_device(&ila_net_ops);
92 if (ret)
93 goto register_device_fail;
94
95 ret = genl_register_family(&ila_nl_family);
96 if (ret)
97 goto register_family_fail;
98
99 ret = ila_lwt_init();
100 if (ret)
101 goto fail_lwt;
102
103 return 0;
104
105 fail_lwt:
106 genl_unregister_family(&ila_nl_family);
107 register_family_fail:
108 unregister_pernet_device(&ila_net_ops);
109 register_device_fail:
110 return ret;
111 }
112
ila_fini(void)113 static void __exit ila_fini(void)
114 {
115 ila_lwt_fini();
116 genl_unregister_family(&ila_nl_family);
117 unregister_pernet_device(&ila_net_ops);
118 }
119
120 module_init(ila_init);
121 module_exit(ila_fini);
122 MODULE_AUTHOR("Tom Herbert <tom@herbertland.com>");
123 MODULE_LICENSE("GPL");
124 MODULE_DESCRIPTION("IPv6: Identifier Locator Addressing (ILA)");
125