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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/net/ipv6/ila/ila_main.c
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// SPDX-License-Identifier: GPL-2.0

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#include <net/genetlink.h>

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#include <net/netns/generic.h>

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#include <uapi/linux/genetlink.h>

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#include "ila.h"

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static const struct nla_policy ila_nl_policy[ILA_ATTR_MAX + 1] = {

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	[ILA_ATTR_LOCATOR] = { .type = NLA_U64, },

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	[ILA_ATTR_LOCATOR_MATCH] = { .type = NLA_U64, },

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	[ILA_ATTR_IFINDEX] = { .type = NLA_U32, },

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	[ILA_ATTR_CSUM_MODE] = { .type = NLA_U8, },

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	[ILA_ATTR_IDENT_TYPE] = { .type = NLA_U8, },

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};

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static const struct genl_ops ila_nl_ops[] = {

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	{

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		.cmd = ILA_CMD_ADD,

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		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,

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		.doit = ila_xlat_nl_cmd_add_mapping,

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		.flags = GENL_ADMIN_PERM,

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	},

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	{

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		.cmd = ILA_CMD_DEL,

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		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,

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		.doit = ila_xlat_nl_cmd_del_mapping,

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		.flags = GENL_ADMIN_PERM,

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	},

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	{

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		.cmd = ILA_CMD_FLUSH,

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		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,

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		.doit = ila_xlat_nl_cmd_flush,

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		.flags = GENL_ADMIN_PERM,

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	},

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	{

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		.cmd = ILA_CMD_GET,

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		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,

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		.doit = ila_xlat_nl_cmd_get_mapping,

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		.start = ila_xlat_nl_dump_start,

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		.dumpit = ila_xlat_nl_dump,

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		.done = ila_xlat_nl_dump_done,

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	},

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};

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unsigned int ila_net_id;

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struct genl_family ila_nl_family __ro_after_init = {

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	.hdrsize	= 0,

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	.name		= ILA_GENL_NAME,

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	.version	= ILA_GENL_VERSION,

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	.maxattr	= ILA_ATTR_MAX,

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	.policy = ila_nl_policy,

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	.netnsok	= true,

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	.parallel_ops	= true,

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	.module		= THIS_MODULE,

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	.ops		= ila_nl_ops,

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	.n_ops		= ARRAY_SIZE(ila_nl_ops),

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	.resv_start_op	= ILA_CMD_FLUSH + 1,

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};

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static __net_init int ila_init_net(struct net *net)

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{

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	int err;

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	err = ila_xlat_init_net(net);

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	if (err)

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		goto ila_xlat_init_fail;

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	return 0;

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ila_xlat_init_fail:

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	return err;

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}

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static __net_exit void ila_pre_exit_net(struct net *net)

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{

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	ila_xlat_pre_exit_net(net);

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}

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static __net_exit void ila_exit_net(struct net *net)

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{

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	ila_xlat_exit_net(net);

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}

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static struct pernet_operations ila_net_ops = {

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	.init = ila_init_net,

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	.pre_exit = ila_pre_exit_net,

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	.exit = ila_exit_net,

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	.id   = &ila_net_id,

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	.size = sizeof(struct ila_net),

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};

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static int __init ila_init(void)

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{

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	int ret;

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	ret = register_pernet_device(&ila_net_ops);

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	if (ret)

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		goto register_device_fail;

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	ret = genl_register_family(&ila_nl_family);

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	if (ret)

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		goto register_family_fail;

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	ret = ila_lwt_init();

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	if (ret)

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		goto fail_lwt;

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	return 0;

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fail_lwt:

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	genl_unregister_family(&ila_nl_family);

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register_family_fail:

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	unregister_pernet_device(&ila_net_ops);

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register_device_fail:

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	return ret;

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}

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static void __exit ila_fini(void)

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{

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	ila_lwt_fini();

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	genl_unregister_family(&ila_nl_family);

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	unregister_pernet_device(&ila_net_ops);

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}

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module_init(ila_init);

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module_exit(ila_fini);

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MODULE_AUTHOR("Tom Herbert <[email protected]>");

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MODULE_LICENSE("GPL");

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MODULE_DESCRIPTION("IPv6: Identifier Locator Addressing (ILA)");

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