[NetLabel]: core network changes (11a03f78) · Commits · e / devices / android_kernel_oneplus_sm7250

include/linux/ip.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -57,6 +57,7 @@
		#define IPOPT_SEC (2 \|IPOPT_CONTROL\|IPOPT_COPY)
		#define IPOPT_LSRR (3 \|IPOPT_CONTROL\|IPOPT_COPY)
		#define IPOPT_TIMESTAMP (4 \|IPOPT_MEASUREMENT)
		#define IPOPT_CIPSO (6 \|IPOPT_CONTROL\|IPOPT_COPY)
		#define IPOPT_RR (7 \|IPOPT_CONTROL)
		#define IPOPT_SID (8 \|IPOPT_CONTROL\|IPOPT_COPY)
		#define IPOPT_SSRR (9 \|IPOPT_CONTROL\|IPOPT_COPY)

include/net/cipso_ipv4.h

0 → 100644

+250 −0

Original line number	Diff line number	Diff line
		/*
		* CIPSO - Commercial IP Security Option
		*
		* This is an implementation of the CIPSO 2.2 protocol as specified in
		* draft-ietf-cipso-ipsecurity-01.txt with additional tag types as found in
		* FIPS-188, copies of both documents can be found in the Documentation
		* directory. While CIPSO never became a full IETF RFC standard many vendors
		* have chosen to adopt the protocol and over the years it has become a
		* de-facto standard for labeled networking.
		*
		* Author: Paul Moore <paul.moore@hp.com>
		*
		*/

		/*
		* (c) Copyright Hewlett-Packard Development Company, L.P., 2006
		*
		* 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, write to the Free Software
		* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
		*
		*/

		#ifndef _CIPSO_IPV4_H
		#define _CIPSO_IPV4_H

		#include <linux/types.h>
		#include <linux/rcupdate.h>
		#include <linux/list.h>
		#include <net/netlabel.h>

		/* known doi values */
		#define CIPSO_V4_DOI_UNKNOWN 0x00000000

		/* tag types */
		#define CIPSO_V4_TAG_INVALID 0
		#define CIPSO_V4_TAG_RBITMAP 1
		#define CIPSO_V4_TAG_ENUM 2
		#define CIPSO_V4_TAG_RANGE 5
		#define CIPSO_V4_TAG_PBITMAP 6
		#define CIPSO_V4_TAG_FREEFORM 7

		/* doi mapping types */
		#define CIPSO_V4_MAP_UNKNOWN 0
		#define CIPSO_V4_MAP_STD 1
		#define CIPSO_V4_MAP_PASS 2

		/* limits */
		#define CIPSO_V4_MAX_REM_LVLS 256
		#define CIPSO_V4_INV_LVL 0x80000000
		#define CIPSO_V4_MAX_LOC_LVLS (CIPSO_V4_INV_LVL - 1)
		#define CIPSO_V4_MAX_REM_CATS 65536
		#define CIPSO_V4_INV_CAT 0x80000000
		#define CIPSO_V4_MAX_LOC_CATS (CIPSO_V4_INV_CAT - 1)

		/*
		* CIPSO DOI definitions
		*/

		/* DOI definition struct */
		#define CIPSO_V4_TAG_MAXCNT 5
		struct cipso_v4_doi {
		u32 doi;
		u32 type;
		union {
		struct cipso_v4_std_map_tbl *std;
		} map;
		u8 tags[CIPSO_V4_TAG_MAXCNT];

		u32 valid;
		struct list_head list;
		struct rcu_head rcu;
		struct list_head dom_list;
		};

		/* Standard CIPSO mapping table */
		/* NOTE: the highest order bit (i.e. 0x80000000) is an 'invalid' flag, if the
		* bit is set then consider that value as unspecified, meaning the
		* mapping for that particular level/category is invalid */
		struct cipso_v4_std_map_tbl {
		struct {
		u32 *cipso;
		u32 *local;
		u32 cipso_size;
		u32 local_size;
		} lvl;
		struct {
		u32 *cipso;
		u32 *local;
		u32 cipso_size;
		u32 local_size;
		} cat;
		};

		/*
		* Sysctl Variables
		*/

		#ifdef CONFIG_NETLABEL
		extern int cipso_v4_cache_enabled;
		extern int cipso_v4_cache_bucketsize;
		extern int cipso_v4_rbm_optfmt;
		extern int cipso_v4_rbm_strictvalid;
		#endif

		/*
		* Helper Functions
		*/

		#define CIPSO_V4_OPTEXIST(x) (IPCB(x)->opt.cipso != 0)
		#define CIPSO_V4_OPTPTR(x) ((x)->nh.raw + IPCB(x)->opt.cipso)

		/*
		* DOI List Functions
		*/

		#ifdef CONFIG_NETLABEL
		int cipso_v4_doi_add(struct cipso_v4_doi *doi_def);
		int cipso_v4_doi_remove(u32 doi, void (callback) (struct rcu_head head));
		struct cipso_v4_doi *cipso_v4_doi_getdef(u32 doi);
		struct sk_buff *cipso_v4_doi_dump_all(size_t headroom);
		struct sk_buff *cipso_v4_doi_dump(u32 doi, size_t headroom);
		int cipso_v4_doi_domhsh_add(struct cipso_v4_doi doi_def, const char domain);
		int cipso_v4_doi_domhsh_remove(struct cipso_v4_doi *doi_def,
		const char *domain);
		#else
		static inline int cipso_v4_doi_add(struct cipso_v4_doi *doi_def)
		{
		return -ENOSYS;
		}

		static inline int cipso_v4_doi_remove(u32 doi,
		void (callback) (struct rcu_head head))
		{
		return 0;
		}

		static inline struct cipso_v4_doi *cipso_v4_doi_getdef(u32 doi)
		{
		return NULL;
		}

		static inline struct sk_buff *cipso_v4_doi_dump_all(size_t headroom)
		{
		return NULL;
		}

		static inline struct sk_buff *cipso_v4_doi_dump(u32 doi, size_t headroom)
		{
		return NULL;
		}

		static inline int cipso_v4_doi_domhsh_add(struct cipso_v4_doi *doi_def,
		const char *domain)
		{
		return -ENOSYS;
		}

		static inline int cipso_v4_doi_domhsh_remove(struct cipso_v4_doi *doi_def,
		const char *domain)
		{
		return 0;
		}
		#endif /* CONFIG_NETLABEL */

		/*
		* Label Mapping Cache Functions
		*/

		#ifdef CONFIG_NETLABEL
		void cipso_v4_cache_invalidate(void);
		int cipso_v4_cache_add(const struct sk_buff *skb,
		const struct netlbl_lsm_secattr *secattr);
		#else
		static inline void cipso_v4_cache_invalidate(void)
		{
		return;
		}

		static inline int cipso_v4_cache_add(const struct sk_buff *skb,
		const struct netlbl_lsm_secattr *secattr)
		{
		return 0;
		}
		#endif /* CONFIG_NETLABEL */

		/*
		* Protocol Handling Functions
		*/

		#ifdef CONFIG_NETLABEL
		void cipso_v4_error(struct sk_buff *skb, int error, u32 gateway);
		int cipso_v4_socket_setopt(struct socket *sock,
		unsigned char *opt,
		u32 opt_len);
		int cipso_v4_socket_setattr(const struct socket *sock,
		const struct cipso_v4_doi *doi_def,
		const struct netlbl_lsm_secattr *secattr);
		int cipso_v4_socket_getopt(const struct socket *sock,
		unsigned char **opt,
		u32 *opt_len);
		int cipso_v4_socket_getattr(const struct socket *sock,
		struct netlbl_lsm_secattr *secattr);
		int cipso_v4_skbuff_getattr(const struct sk_buff *skb,
		struct netlbl_lsm_secattr *secattr);
		int cipso_v4_validate(unsigned char **option);
		#else
		static inline void cipso_v4_error(struct sk_buff *skb,
		int error,
		u32 gateway)
		{
		return;
		}

		static inline int cipso_v4_socket_setattr(const struct socket *sock,
		const struct cipso_v4_doi *doi_def,
		const struct netlbl_lsm_secattr *secattr)
		{
		return -ENOSYS;
		}

		static inline int cipso_v4_socket_getattr(const struct socket *sock,
		struct netlbl_lsm_secattr *secattr)
		{
		return -ENOSYS;
		}

		static inline int cipso_v4_skbuff_getattr(const struct sk_buff *skb,
		struct netlbl_lsm_secattr *secattr)
		{
		return -ENOSYS;
		}

		static inline int cipso_v4_validate(unsigned char **option)
		{
		return -ENOSYS;
		}
		#endif /* CONFIG_NETLABEL */

		#endif /* _CIPSO_IPV4_H */

include/net/inet_sock.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -51,7 +51,7 @@ struct ip_options {
		ts_needtime:1,
		ts_needaddr:1;
		unsigned char router_alert;
		unsigned char __pad1;
		unsigned char cipso;
		unsigned char __pad2;
		unsigned char __data[0];
		};

include/net/netlabel.h

0 → 100644

+291 −0

Original line number	Diff line number	Diff line
		/*
		* NetLabel System
		*
		* The NetLabel system manages static and dynamic label mappings for network
		* protocols such as CIPSO and RIPSO.
		*
		* Author: Paul Moore <paul.moore@hp.com>
		*
		*/

		/*
		* (c) Copyright Hewlett-Packard Development Company, L.P., 2006
		*
		* 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, write to the Free Software
		* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
		*
		*/

		#ifndef _NETLABEL_H
		#define _NETLABEL_H

		#include <linux/types.h>
		#include <linux/skbuff.h>
		#include <net/netlink.h>

		/*
		* NetLabel - A management interface for maintaining network packet label
		* mapping tables for explicit packet labling protocols.
		*
		* Network protocols such as CIPSO and RIPSO require a label translation layer
		* to convert the label on the packet into something meaningful on the host
		* machine. In the current Linux implementation these mapping tables live
		* inside the kernel; NetLabel provides a mechanism for user space applications
		* to manage these mapping tables.
		*
		* NetLabel makes use of the Generic NETLINK mechanism as a transport layer to
		* send messages between kernel and user space. The general format of a
		* NetLabel message is shown below:
		*
		* +-----------------+-------------------+--------- --- -- -
		* \| struct nlmsghdr \| struct genlmsghdr \| payload
		* +-----------------+-------------------+--------- --- -- -
		*
		* The 'nlmsghdr' and 'genlmsghdr' structs should be dealt with like normal.
		* The payload is dependent on the subsystem specified in the
		* 'nlmsghdr->nlmsg_type' and should be defined below, supporting functions
		* should be defined in the corresponding net/netlabel/netlabel_<subsys>.h\|c
		* file. All of the fields in the NetLabel payload are NETLINK attributes, the
		* length of each field is the length of the NETLINK attribute payload, see
		* include/net/netlink.h for more information on NETLINK attributes.
		*
		*/

		/*
		* NetLabel NETLINK protocol
		*/

		#define NETLBL_PROTO_VERSION 1

		/* NetLabel NETLINK types/families */
		#define NETLBL_NLTYPE_NONE 0
		#define NETLBL_NLTYPE_MGMT 1
		#define NETLBL_NLTYPE_MGMT_NAME "NLBL_MGMT"
		#define NETLBL_NLTYPE_RIPSO 2
		#define NETLBL_NLTYPE_RIPSO_NAME "NLBL_RIPSO"
		#define NETLBL_NLTYPE_CIPSOV4 3
		#define NETLBL_NLTYPE_CIPSOV4_NAME "NLBL_CIPSOv4"
		#define NETLBL_NLTYPE_CIPSOV6 4
		#define NETLBL_NLTYPE_CIPSOV6_NAME "NLBL_CIPSOv6"
		#define NETLBL_NLTYPE_UNLABELED 5
		#define NETLBL_NLTYPE_UNLABELED_NAME "NLBL_UNLBL"

		/* NetLabel return codes */
		#define NETLBL_E_OK 0

		/*
		* Helper functions
		*/

		#define NETLBL_LEN_U8 nla_total_size(sizeof(u8))
		#define NETLBL_LEN_U16 nla_total_size(sizeof(u16))
		#define NETLBL_LEN_U32 nla_total_size(sizeof(u32))

		/**
		* netlbl_netlink_alloc_skb - Allocate a NETLINK message buffer
		* @head: the amount of headroom in bytes
		* @body: the desired size (minus headroom) in bytes
		* @gfp_flags: the alloc flags to pass to alloc_skb()
		*
		* Description:
		* Allocate a NETLINK message buffer based on the sizes given in @head and
		* @body. If @head is greater than zero skb_reserve() is called to reserve
		* @head bytes at the start of the buffer. Returns a valid sk_buff pointer on
		* success, NULL on failure.
		*
		*/
		static inline struct sk_buff *netlbl_netlink_alloc_skb(size_t head,
		size_t body,
		int gfp_flags)
		{
		struct sk_buff *skb;

		skb = alloc_skb(NLMSG_ALIGN(head + body), gfp_flags);
		if (skb == NULL)
		return NULL;
		if (head > 0) {
		skb_reserve(skb, head);
		if (skb_tailroom(skb) < body) {
		kfree_skb(skb);
		return NULL;
		}
		}

		return skb;
		}

		/*
		* NetLabel - Kernel API for accessing the network packet label mappings.
		*
		* The following functions are provided for use by other kernel modules,
		* specifically kernel LSM modules, to provide a consistent, transparent API
		* for dealing with explicit packet labeling protocols such as CIPSO and
		* RIPSO. The functions defined here are implemented in the
		* net/netlabel/netlabel_kapi.c file.
		*
		*/

		/* Domain mapping definition struct */
		struct netlbl_dom_map;

		/* Domain mapping operations */
		int netlbl_domhsh_remove(const char *domain);

		/* LSM security attributes */
		struct netlbl_lsm_cache {
		void (free) (const void data);
		void *data;
		};
		struct netlbl_lsm_secattr {
		char *domain;

		u32 mls_lvl;
		u32 mls_lvl_vld;
		unsigned char *mls_cat;
		size_t mls_cat_len;

		struct netlbl_lsm_cache cache;
		};

		/*
		* LSM security attribute operations
		*/


		/**
		* netlbl_secattr_init - Initialize a netlbl_lsm_secattr struct
		* @secattr: the struct to initialize
		*
		* Description:
		* Initialize an already allocated netlbl_lsm_secattr struct. Returns zero on
		* success, negative values on error.
		*
		*/
		static inline int netlbl_secattr_init(struct netlbl_lsm_secattr *secattr)
		{
		memset(secattr, 0, sizeof(*secattr));
		return 0;
		}

		/**
		* netlbl_secattr_destroy - Clears a netlbl_lsm_secattr struct
		* @secattr: the struct to clear
		* @clear_cache: cache clear flag
		*
		* Description:
		* Destroys the @secattr struct, including freeing all of the internal buffers.
		* If @clear_cache is true then free the cache fields, otherwise leave them
		* intact. The struct must be reset with a call to netlbl_secattr_init()
		* before reuse.
		*
		*/
		static inline void netlbl_secattr_destroy(struct netlbl_lsm_secattr *secattr,
		u32 clear_cache)
		{
		if (clear_cache && secattr->cache.data != NULL && secattr->cache.free)
		secattr->cache.free(secattr->cache.data);
		kfree(secattr->domain);
		kfree(secattr->mls_cat);
		}

		/**
		* netlbl_secattr_alloc - Allocate and initialize a netlbl_lsm_secattr struct
		* @flags: the memory allocation flags
		*
		* Description:
		* Allocate and initialize a netlbl_lsm_secattr struct. Returns a valid
		* pointer on success, or NULL on failure.
		*
		*/
		static inline struct netlbl_lsm_secattr *netlbl_secattr_alloc(int flags)
		{
		return kzalloc(sizeof(struct netlbl_lsm_secattr), flags);
		}

		/**
		* netlbl_secattr_free - Frees a netlbl_lsm_secattr struct
		* @secattr: the struct to free
		* @clear_cache: cache clear flag
		*
		* Description:
		* Frees @secattr including all of the internal buffers. If @clear_cache is
		* true then free the cache fields, otherwise leave them intact.
		*
		*/
		static inline void netlbl_secattr_free(struct netlbl_lsm_secattr *secattr,
		u32 clear_cache)
		{
		netlbl_secattr_destroy(secattr, clear_cache);
		kfree(secattr);
		}

		/*
		* LSM protocol operations
		*/

		#ifdef CONFIG_NETLABEL
		int netlbl_socket_setattr(const struct socket *sock,
		const struct netlbl_lsm_secattr *secattr);
		int netlbl_socket_getattr(const struct socket *sock,
		struct netlbl_lsm_secattr *secattr);
		int netlbl_skbuff_getattr(const struct sk_buff *skb,
		struct netlbl_lsm_secattr *secattr);
		void netlbl_skbuff_err(struct sk_buff *skb, int error);
		#else
		static inline int netlbl_socket_setattr(const struct socket *sock,
		const struct netlbl_lsm_secattr *secattr)
		{
		return -ENOSYS;
		}

		static inline int netlbl_socket_getattr(const struct socket *sock,
		struct netlbl_lsm_secattr *secattr)
		{
		return -ENOSYS;
		}

		static inline int netlbl_skbuff_getattr(const struct sk_buff *skb,
		struct netlbl_lsm_secattr *secattr)
		{
		return -ENOSYS;
		}

		static inline void netlbl_skbuff_err(struct sk_buff *skb, int error)
		{
		return;
		}
		#endif /* CONFIG_NETLABEL */

		/*
		* LSM label mapping cache operations
		*/

		#ifdef CONFIG_NETLABEL
		void netlbl_cache_invalidate(void);
		int netlbl_cache_add(const struct sk_buff *skb,
		const struct netlbl_lsm_secattr *secattr);
		#else
		static inline void netlbl_cache_invalidate(void)
		{
		return;
		}

		static inline int netlbl_cache_add(const struct sk_buff *skb,
		const struct netlbl_lsm_secattr *secattr)
		{
		return 0;
		}
		#endif /* CONFIG_NETLABEL */

		#endif /* _NETLABEL_H */

net/ipv4/ah4.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -35,7 +35,7 @@ static int ip_clear_mutable_options(struct iphdr iph, u32 daddr)
		switch (*optptr) {
		case IPOPT_SEC:
		case 0x85: /* Some "Extended Security" crap. */
		case 0x86: /* Another "Commercial Security" crap. */
		case IPOPT_CIPSO:
		case IPOPT_RA:
		case 0x80\|21: /* RFC1770 */
		break;

Original line number	Diff line number	Diff line
		@@ -57,6 +57,7 @@
		#define IPOPT_SEC (2 \|IPOPT_CONTROL\|IPOPT_COPY)
		#define IPOPT_LSRR (3 \|IPOPT_CONTROL\|IPOPT_COPY)
		#define IPOPT_TIMESTAMP (4 \|IPOPT_MEASUREMENT)
		#define IPOPT_CIPSO (6 \|IPOPT_CONTROL\|IPOPT_COPY)
		#define IPOPT_RR (7 \|IPOPT_CONTROL)
		#define IPOPT_SID (8 \|IPOPT_CONTROL\|IPOPT_COPY)
		#define IPOPT_SSRR (9 \|IPOPT_CONTROL\|IPOPT_COPY)