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authorPaul Moore <paul.moore@hp.com>2006-09-25 15:56:37 -0700
committerDavid S. Miller <davem@davemloft.net>2006-09-25 15:56:37 -0700
commitfd3858554b62c3af6b7664b5c58ad864c87116c9 (patch)
tree9b01a61ed88a19331565649f04373a08ca3d3aa6 /net/netlabel/netlabel_cipso_v4.h
parentfcd48280643e92ec6cb29a04e9079dd7b6b5bfef (diff)
downloadlinux-linaro-fd3858554b62c3af6b7664b5c58ad864c87116c9.tar.gz
[NetLabel]: rework the Netlink attribute handling (part 2)
At the suggestion of Thomas Graf, rewrite NetLabel's use of Netlink attributes to better follow the common Netlink attribute usage. Signed-off-by: Paul Moore <paul.moore@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/netlabel/netlabel_cipso_v4.h')
-rw-r--r--net/netlabel/netlabel_cipso_v4.h225
1 files changed, 87 insertions, 138 deletions
diff --git a/net/netlabel/netlabel_cipso_v4.h b/net/netlabel/netlabel_cipso_v4.h
index 4c6ff4b9300..f03cf9b7828 100644
--- a/net/netlabel/netlabel_cipso_v4.h
+++ b/net/netlabel/netlabel_cipso_v4.h
@@ -34,175 +34,71 @@
#include <net/netlabel.h>
/*
- * The following NetLabel payloads are supported by the CIPSO subsystem, all
- * of which are preceeded by the nlmsghdr struct.
+ * The following NetLabel payloads are supported by the CIPSO subsystem.
*
- * o ACK:
- * Sent by the kernel in response to an applications message, applications
- * should never send this message.
+ * o ADD:
+ * Sent by an application to add a new DOI mapping table.
*
- * +----------------------+-----------------------+
- * | seq number (32 bits) | return code (32 bits) |
- * +----------------------+-----------------------+
+ * Required attributes:
*
- * seq number: the sequence number of the original message, taken from the
- * nlmsghdr structure
- * return code: return value, based on errno values
+ * NLBL_CIPSOV4_A_DOI
+ * NLBL_CIPSOV4_A_MTYPE
+ * NLBL_CIPSOV4_A_TAGLST
*
- * o ADD:
- * Sent by an application to add a new DOI mapping table, after completion
- * of the task the kernel should ACK this message.
- *
- * +---------------+--------------------+---------------------+
- * | DOI (32 bits) | map type (32 bits) | tag count (32 bits) | ...
- * +---------------+--------------------+---------------------+
- *
- * +-----------------+
- * | tag #X (8 bits) | ... repeated
- * +-----------------+
- *
- * +-------------- ---- --- -- -
- * | mapping data
- * +-------------- ---- --- -- -
- *
- * DOI: the DOI value
- * map type: the mapping table type (defined in the cipso_ipv4.h header
- * as CIPSO_V4_MAP_*)
- * tag count: the number of tags, must be greater than zero
- * tag: the CIPSO tag for the DOI, tags listed first are given
- * higher priorirty when sending packets
- * mapping data: specific to the map type (see below)
- *
- * CIPSO_V4_MAP_STD
- *
- * +------------------+-----------------------+----------------------+
- * | levels (32 bits) | max l level (32 bits) | max r level (8 bits) | ...
- * +------------------+-----------------------+----------------------+
- *
- * +----------------------+---------------------+---------------------+
- * | categories (32 bits) | max l cat (32 bits) | max r cat (16 bits) | ...
- * +----------------------+---------------------+---------------------+
- *
- * +--------------------------+-------------------------+
- * | local level #X (32 bits) | CIPSO level #X (8 bits) | ... repeated
- * +--------------------------+-------------------------+
- *
- * +-----------------------------+-----------------------------+
- * | local category #X (32 bits) | CIPSO category #X (16 bits) | ... repeated
- * +-----------------------------+-----------------------------+
- *
- * levels: the number of level mappings
- * max l level: the highest local level
- * max r level: the highest remote/CIPSO level
- * categories: the number of category mappings
- * max l cat: the highest local category
- * max r cat: the highest remote/CIPSO category
- * local level: the local part of a level mapping
- * CIPSO level: the remote/CIPSO part of a level mapping
- * local category: the local part of a category mapping
- * CIPSO category: the remote/CIPSO part of a category mapping
- *
- * CIPSO_V4_MAP_PASS
- *
- * No mapping data is needed for this map type.
+ * If using CIPSO_V4_MAP_STD the following attributes are required:
+ *
+ * NLBL_CIPSOV4_A_MLSLVLLST
+ * NLBL_CIPSOV4_A_MLSCATLST
+ *
+ * If using CIPSO_V4_MAP_PASS no additional attributes are required.
*
* o REMOVE:
* Sent by an application to remove a specific DOI mapping table from the
- * CIPSO V4 system. The kernel should ACK this message.
+ * CIPSO V4 system.
*
- * +---------------+
- * | DOI (32 bits) |
- * +---------------+
+ * Required attributes:
*
- * DOI: the DOI value
+ * NLBL_CIPSOV4_A_DOI
*
* o LIST:
- * Sent by an application to list the details of a DOI definition. The
- * kernel should send an ACK on error or a response as indicated below. The
- * application generated message format is shown below.
+ * Sent by an application to list the details of a DOI definition. On
+ * success the kernel should send a response using the following format.
*
- * +---------------+
- * | DOI (32 bits) |
- * +---------------+
+ * Required attributes:
*
- * DOI: the DOI value
+ * NLBL_CIPSOV4_A_DOI
*
* The valid response message format depends on the type of the DOI mapping,
- * the known formats are shown below.
- *
- * +--------------------+
- * | map type (32 bits) | ...
- * +--------------------+
- *
- * map type: the DOI mapping table type (defined in the cipso_ipv4.h
- * header as CIPSO_V4_MAP_*)
- *
- * (map type == CIPSO_V4_MAP_STD)
- *
- * +----------------+------------------+----------------------+
- * | tags (32 bits) | levels (32 bits) | categories (32 bits) | ...
- * +----------------+------------------+----------------------+
+ * the defined formats are shown below.
*
- * +-----------------+
- * | tag #X (8 bits) | ... repeated
- * +-----------------+
+ * Required attributes:
*
- * +--------------------------+-------------------------+
- * | local level #X (32 bits) | CIPSO level #X (8 bits) | ... repeated
- * +--------------------------+-------------------------+
+ * NLBL_CIPSOV4_A_MTYPE
+ * NLBL_CIPSOV4_A_TAGLST
*
- * +-----------------------------+-----------------------------+
- * | local category #X (32 bits) | CIPSO category #X (16 bits) | ... repeated
- * +-----------------------------+-----------------------------+
+ * If using CIPSO_V4_MAP_STD the following attributes are required:
*
- * tags: the number of CIPSO tag types
- * levels: the number of level mappings
- * categories: the number of category mappings
- * tag: the tag number, tags listed first are given higher
- * priority when sending packets
- * local level: the local part of a level mapping
- * CIPSO level: the remote/CIPSO part of a level mapping
- * local category: the local part of a category mapping
- * CIPSO category: the remote/CIPSO part of a category mapping
+ * NLBL_CIPSOV4_A_MLSLVLLST
+ * NLBL_CIPSOV4_A_MLSCATLST
*
- * (map type == CIPSO_V4_MAP_PASS)
- *
- * +----------------+
- * | tags (32 bits) | ...
- * +----------------+
- *
- * +-----------------+
- * | tag #X (8 bits) | ... repeated
- * +-----------------+
- *
- * tags: the number of CIPSO tag types
- * tag: the tag number, tags listed first are given higher
- * priority when sending packets
+ * If using CIPSO_V4_MAP_PASS no additional attributes are required.
*
* o LISTALL:
* This message is sent by an application to list the valid DOIs on the
- * system. There is no payload and the kernel should respond with an ACK
- * or the following message.
- *
- * +---------------------+------------------+-----------------------+
- * | DOI count (32 bits) | DOI #X (32 bits) | map type #X (32 bits) |
- * +---------------------+------------------+-----------------------+
+ * system. When sent by an application there is no payload and the
+ * NLM_F_DUMP flag should be set. The kernel should respond with a series of
+ * the following messages.
*
- * +-----------------------+
- * | map type #X (32 bits) | ...
- * +-----------------------+
+ * Required attributes:
*
- * DOI count: the number of DOIs
- * DOI: the DOI value
- * map type: the DOI mapping table type (defined in the cipso_ipv4.h
- * header as CIPSO_V4_MAP_*)
+ * NLBL_CIPSOV4_A_DOI
+ * NLBL_CIPSOV4_A_MTYPE
*
*/
/* NetLabel CIPSOv4 commands */
enum {
NLBL_CIPSOV4_C_UNSPEC,
- NLBL_CIPSOV4_C_ACK,
NLBL_CIPSOV4_C_ADD,
NLBL_CIPSOV4_C_REMOVE,
NLBL_CIPSOV4_C_LIST,
@@ -211,6 +107,59 @@ enum {
};
#define NLBL_CIPSOV4_C_MAX (__NLBL_CIPSOV4_C_MAX - 1)
+/* NetLabel CIPSOv4 attributes */
+enum {
+ NLBL_CIPSOV4_A_UNSPEC,
+ NLBL_CIPSOV4_A_DOI,
+ /* (NLA_U32)
+ * the DOI value */
+ NLBL_CIPSOV4_A_MTYPE,
+ /* (NLA_U32)
+ * the mapping table type (defined in the cipso_ipv4.h header as
+ * CIPSO_V4_MAP_*) */
+ NLBL_CIPSOV4_A_TAG,
+ /* (NLA_U8)
+ * a CIPSO tag type, meant to be used within a NLBL_CIPSOV4_A_TAGLST
+ * attribute */
+ NLBL_CIPSOV4_A_TAGLST,
+ /* (NLA_NESTED)
+ * the CIPSO tag list for the DOI, there must be at least one
+ * NLBL_CIPSOV4_A_TAG attribute, tags listed first are given higher
+ * priorirty when sending packets */
+ NLBL_CIPSOV4_A_MLSLVLLOC,
+ /* (NLA_U32)
+ * the local MLS sensitivity level */
+ NLBL_CIPSOV4_A_MLSLVLREM,
+ /* (NLA_U32)
+ * the remote MLS sensitivity level */
+ NLBL_CIPSOV4_A_MLSLVL,
+ /* (NLA_NESTED)
+ * a MLS sensitivity level mapping, must contain only one attribute of
+ * each of the following types: NLBL_CIPSOV4_A_MLSLVLLOC and
+ * NLBL_CIPSOV4_A_MLSLVLREM */
+ NLBL_CIPSOV4_A_MLSLVLLST,
+ /* (NLA_NESTED)
+ * the CIPSO level mappings, there must be at least one
+ * NLBL_CIPSOV4_A_MLSLVL attribute */
+ NLBL_CIPSOV4_A_MLSCATLOC,
+ /* (NLA_U32)
+ * the local MLS category */
+ NLBL_CIPSOV4_A_MLSCATREM,
+ /* (NLA_U32)
+ * the remote MLS category */
+ NLBL_CIPSOV4_A_MLSCAT,
+ /* (NLA_NESTED)
+ * a MLS category mapping, must contain only one attribute of each of
+ * the following types: NLBL_CIPSOV4_A_MLSCATLOC and
+ * NLBL_CIPSOV4_A_MLSCATREM */
+ NLBL_CIPSOV4_A_MLSCATLST,
+ /* (NLA_NESTED)
+ * the CIPSO category mappings, there must be at least one
+ * NLBL_CIPSOV4_A_MLSCAT attribute */
+ __NLBL_CIPSOV4_A_MAX,
+};
+#define NLBL_CIPSOV4_A_MAX (__NLBL_CIPSOV4_A_MAX - 1)
+
/* NetLabel protocol functions */
int netlbl_cipsov4_genl_init(void);