From cb72d38211eacda2dd90b09540542b6582da614e Mon Sep 17 00:00:00 2001 From: Huw Davies Date: Mon, 27 Jun 2016 15:02:46 -0400 Subject: netlabel: Initial support for the CALIPSO netlink protocol. CALIPSO is a packet labelling protocol for IPv6 which is very similar to CIPSO. It is specified in RFC 5570. Much of the code is based on the current CIPSO code. This adds support for adding passthrough-type CALIPSO DOIs through the NLBL_CALIPSO_C_ADD command. It requires attributes: NLBL_CALIPSO_A_TYPE which must be CALIPSO_MAP_PASS. NLBL_CALIPSO_A_DOI. In passthrough mode the CALIPSO engine will map MLS secattr levels and categories directly to the packet label. At this stage, the major difference between this and the CIPSO code is that IPv6 may be compiled as a module. To allow for this the CALIPSO functions are registered at module init time. Signed-off-by: Huw Davies Signed-off-by: Paul Moore --- include/net/netlabel.h | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to 'include/net/netlabel.h') diff --git a/include/net/netlabel.h b/include/net/netlabel.h index 7b5a300de7f5..6af1bb6df4ab 100644 --- a/include/net/netlabel.h +++ b/include/net/netlabel.h @@ -40,6 +40,7 @@ #include struct cipso_v4_doi; +struct calipso_doi; /* * NetLabel - A management interface for maintaining network packet label @@ -94,6 +95,8 @@ struct cipso_v4_doi; #define NETLBL_NLTYPE_UNLABELED_NAME "NLBL_UNLBL" #define NETLBL_NLTYPE_ADDRSELECT 6 #define NETLBL_NLTYPE_ADDRSELECT_NAME "NLBL_ADRSEL" +#define NETLBL_NLTYPE_CALIPSO 7 +#define NETLBL_NLTYPE_CALIPSO_NAME "NLBL_CALIPSO" /* * NetLabel - Kernel API for accessing the network packet label mappings. @@ -216,6 +219,23 @@ struct netlbl_lsm_secattr { } attr; }; +/** + * struct netlbl_calipso_ops - NetLabel CALIPSO operations + * @doi_add: add a CALIPSO DOI + * @doi_free: free a CALIPSO DOI + * + * Description: + * This structure is filled out by the CALIPSO engine and passed + * to the NetLabel core via a call to netlbl_calipso_ops_register(). + * It enables the CALIPSO engine (and hence IPv6) to be compiled + * as a module. + */ +struct netlbl_calipso_ops { + int (*doi_add)(struct calipso_doi *doi_def, + struct netlbl_audit *audit_info); + void (*doi_free)(struct calipso_doi *doi_def); +}; + /* * LSM security attribute operations (inline) */ @@ -598,4 +618,7 @@ static inline struct audit_buffer *netlbl_audit_start(int type, } #endif /* CONFIG_NETLABEL */ +const struct netlbl_calipso_ops * +netlbl_calipso_ops_register(const struct netlbl_calipso_ops *ops); + #endif /* _NETLABEL_H */ -- cgit v1.2.3-59-g8ed1b