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alistair23-linux/net/netlabel/netlabel_unlabeled.h
Thomas Gleixner 1ccea77e2a treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 
Based on 2 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version this program is distributed in the
  hope that it will be useful but without any warranty without even
  the implied warranty of merchantability or fitness for a particular
  purpose see the gnu general public license for more details you
  should have received a copy of the gnu general public license along
  with this program if not see http www gnu org licenses

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version this program is distributed in the
  hope that it will be useful but without any warranty without even
  the implied warranty of merchantability or fitness for a particular
  purpose see the gnu general public license for more details [based]
  [from] [clk] [highbank] [c] you should have received a copy of the
  gnu general public license along with this program if not see http
  www gnu org licenses

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 355 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Jilayne Lovejoy <opensource@jilayne.com>
Reviewed-by: Steve Winslow <swinslow@gmail.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190519154041.837383322@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-21 11:28:45 +02:00

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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* NetLabel Unlabeled Support
*
* This file defines functions for dealing with unlabeled packets for the
* NetLabel system. The NetLabel system manages static and dynamic label
* mappings for network protocols such as CIPSO and RIPSO.
*
* Author: Paul Moore <paul@paul-moore.com>
*/
/*
* (c) Copyright Hewlett-Packard Development Company, L.P., 2006
*/
#ifndef _NETLABEL_UNLABELED_H
#define _NETLABEL_UNLABELED_H
#include <net/netlabel.h>
/*
* The following NetLabel payloads are supported by the Unlabeled subsystem.
*
* o STATICADD
* This message is sent from an application to add a new static label for
* incoming unlabeled connections.
*
* Required attributes:
*
* NLBL_UNLABEL_A_IFACE
* NLBL_UNLABEL_A_SECCTX
*
* If IPv4 is specified the following attributes are required:
*
* NLBL_UNLABEL_A_IPV4ADDR
* NLBL_UNLABEL_A_IPV4MASK
*
* If IPv6 is specified the following attributes are required:
*
* NLBL_UNLABEL_A_IPV6ADDR
* NLBL_UNLABEL_A_IPV6MASK
*
* o STATICREMOVE
* This message is sent from an application to remove an existing static
* label for incoming unlabeled connections.
*
* Required attributes:
*
* NLBL_UNLABEL_A_IFACE
*
* If IPv4 is specified the following attributes are required:
*
* NLBL_UNLABEL_A_IPV4ADDR
* NLBL_UNLABEL_A_IPV4MASK
*
* If IPv6 is specified the following attributes are required:
*
* NLBL_UNLABEL_A_IPV6ADDR
* NLBL_UNLABEL_A_IPV6MASK
*
* o STATICLIST
* This message can be sent either from an application or by the kernel in
* response to an application generated STATICLIST message. When sent by an
* application there is no payload and the NLM_F_DUMP flag should be set.
* The kernel should response with a series of the following messages.
*
* Required attributes:
*
* NLBL_UNLABEL_A_IFACE
* NLBL_UNLABEL_A_SECCTX
*
* If IPv4 is specified the following attributes are required:
*
* NLBL_UNLABEL_A_IPV4ADDR
* NLBL_UNLABEL_A_IPV4MASK
*
* If IPv6 is specified the following attributes are required:
*
* NLBL_UNLABEL_A_IPV6ADDR
* NLBL_UNLABEL_A_IPV6MASK
*
* o STATICADDDEF
* This message is sent from an application to set the default static
* label for incoming unlabeled connections.
*
* Required attribute:
*
* NLBL_UNLABEL_A_SECCTX
*
* If IPv4 is specified the following attributes are required:
*
* NLBL_UNLABEL_A_IPV4ADDR
* NLBL_UNLABEL_A_IPV4MASK
*
* If IPv6 is specified the following attributes are required:
*
* NLBL_UNLABEL_A_IPV6ADDR
* NLBL_UNLABEL_A_IPV6MASK
*
* o STATICREMOVEDEF
* This message is sent from an application to remove the existing default
* static label for incoming unlabeled connections.
*
* If IPv4 is specified the following attributes are required:
*
* NLBL_UNLABEL_A_IPV4ADDR
* NLBL_UNLABEL_A_IPV4MASK
*
* If IPv6 is specified the following attributes are required:
*
* NLBL_UNLABEL_A_IPV6ADDR
* NLBL_UNLABEL_A_IPV6MASK
*
* o STATICLISTDEF
* This message can be sent either from an application or by the kernel in
* response to an application generated STATICLISTDEF message. When sent by
* an application there is no payload and the NLM_F_DUMP flag should be set.
* The kernel should response with the following message.
*
* Required attribute:
*
* NLBL_UNLABEL_A_SECCTX
*
* If IPv4 is specified the following attributes are required:
*
* NLBL_UNLABEL_A_IPV4ADDR
* NLBL_UNLABEL_A_IPV4MASK
*
* If IPv6 is specified the following attributes are required:
*
* NLBL_UNLABEL_A_IPV6ADDR
* NLBL_UNLABEL_A_IPV6MASK
*
* o ACCEPT
* This message is sent from an application to specify if the kernel should
* allow unlabled packets to pass if they do not match any of the static
* mappings defined in the unlabeled module.
*
* Required attributes:
*
* NLBL_UNLABEL_A_ACPTFLG
*
* o LIST
* This message can be sent either from an application or by the kernel in
* response to an application generated LIST message. When sent by an
* application there is no payload. The kernel should respond to a LIST
* message with a LIST message on success.
*
* Required attributes:
*
* NLBL_UNLABEL_A_ACPTFLG
*
*/
/* NetLabel Unlabeled commands */
enum {
NLBL_UNLABEL_C_UNSPEC,
NLBL_UNLABEL_C_ACCEPT,
NLBL_UNLABEL_C_LIST,
NLBL_UNLABEL_C_STATICADD,
NLBL_UNLABEL_C_STATICREMOVE,
NLBL_UNLABEL_C_STATICLIST,
NLBL_UNLABEL_C_STATICADDDEF,
NLBL_UNLABEL_C_STATICREMOVEDEF,
NLBL_UNLABEL_C_STATICLISTDEF,
__NLBL_UNLABEL_C_MAX,
};
/* NetLabel Unlabeled attributes */
enum {
NLBL_UNLABEL_A_UNSPEC,
NLBL_UNLABEL_A_ACPTFLG,
/* (NLA_U8)
* if true then unlabeled packets are allowed to pass, else unlabeled
* packets are rejected */
NLBL_UNLABEL_A_IPV6ADDR,
/* (NLA_BINARY, struct in6_addr)
* an IPv6 address */
NLBL_UNLABEL_A_IPV6MASK,
/* (NLA_BINARY, struct in6_addr)
* an IPv6 address mask */
NLBL_UNLABEL_A_IPV4ADDR,
/* (NLA_BINARY, struct in_addr)
* an IPv4 address */
NLBL_UNLABEL_A_IPV4MASK,
/* (NLA_BINARY, struct in_addr)
* and IPv4 address mask */
NLBL_UNLABEL_A_IFACE,
/* (NLA_NULL_STRING)
* network interface */
NLBL_UNLABEL_A_SECCTX,
/* (NLA_BINARY)
* a LSM specific security context */
__NLBL_UNLABEL_A_MAX,
};
#define NLBL_UNLABEL_A_MAX (__NLBL_UNLABEL_A_MAX - 1)
/* NetLabel protocol functions */
int netlbl_unlabel_genl_init(void);
/* Unlabeled connection hash table size */
/* XXX - currently this number is an uneducated guess */
#define NETLBL_UNLHSH_BITSIZE 7
/* General Unlabeled init function */
int netlbl_unlabel_init(u32 size);
/* Static/Fallback label management functions */
int netlbl_unlhsh_add(struct net *net,
const char *dev_name,
const void *addr,
const void *mask,
u32 addr_len,
u32 secid,
struct netlbl_audit *audit_info);
int netlbl_unlhsh_remove(struct net *net,
const char *dev_name,
const void *addr,
const void *mask,
u32 addr_len,
struct netlbl_audit *audit_info);
/* Process Unlabeled incoming network packets */
int netlbl_unlabel_getattr(const struct sk_buff *skb,
u16 family,
struct netlbl_lsm_secattr *secattr);
/* Set the default configuration to allow Unlabeled packets */
int netlbl_unlabel_defconf(void);
#endif
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