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	.resv_start_op	= ILA_CMD_FLUSH + 1,
 59};
 60
 61static __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
 71ila_xlat_init_fail:
 72	return err;
 73}
 74
 75static __net_exit void ila_exit_net(struct net *net)
 76{
 77	ila_xlat_exit_net(net);
 78}
 79
 80static 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
 87static 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
105fail_lwt:
106	genl_unregister_family(&ila_nl_family);
107register_family_fail:
108	unregister_pernet_device(&ila_net_ops);
109register_device_fail:
110	return ret;
111}
112
113static 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
120module_init(ila_init);
121module_exit(ila_fini);
122MODULE_AUTHOR("Tom Herbert <tom@herbertland.com>");
123MODULE_LICENSE("GPL");
124MODULE_DESCRIPTION("IPv6: Identifier Locator Addressing (ILA)");