calipso: Set the calipso socket label to match the secattr.

CALIPSO is a hop-by-hop IPv6 option.  A lot of this patch is based on
the equivalent CISPO code.  The main difference is due to manipulating
the options in the hop-by-hop header.

Signed-off-by: Huw Davies <huw@codeweavers.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>

3 files changed, 12 insertions, 0 deletions

diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index 887313d978d0..4e279a83cdd0 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -319,6 +319,8 @@ struct ipv6_txoptions *ipv6_fixup_options(struct ipv6_txoptions *opt_space,
 
 bool ipv6_opt_accepted(const struct sock *sk, const struct sk_buff *skb,
                        const struct inet6_skb_parm *opt);
+struct ipv6_txoptions *ipv6_update_options(struct sock *sk,
+                                           struct ipv6_txoptions *opt);
 
 static inline bool ipv6_accept_ra(struct inet6_dev *idev)
 {
diff --git a/include/net/netlabel.h b/include/net/netlabel.h
index 9fc2cab9be98..918a6044c89c 100644
--- a/include/net/netlabel.h
+++ b/include/net/netlabel.h
@@ -226,6 +226,9 @@ struct netlbl_lsm_secattr {
  * @doi_getdef: returns a reference to a DOI
  * @doi_putdef: releases a reference of a DOI
  * @doi_walk: enumerate the DOI list
+ * @sock_getattr: retrieve the socket's attr
+ * @sock_setattr: set the socket's attr
+ * @sock_delattr: remove the socket's attr
  *
  * Description:
  * This structure is filled out by the CALIPSO engine and passed
@@ -243,6 +246,12 @@ struct netlbl_calipso_ops {
         int (*doi_walk)(u32 *skip_cnt,
                         int (*callback)(struct calipso_doi *doi_def, void *arg),
                         void *cb_arg);
+        int (*sock_getattr)(struct sock *sk,
+                            struct netlbl_lsm_secattr *secattr);
+        int (*sock_setattr)(struct sock *sk,
+                            const struct calipso_doi *doi_def,
+                            const struct netlbl_lsm_secattr *secattr);
+        void (*sock_delattr)(struct sock *sk);
 };
 
 /*
diff --git a/include/uapi/linux/in6.h b/include/uapi/linux/in6.h
index 318a4828bf98..b39ea4f2e701 100644
--- a/include/uapi/linux/in6.h
+++ b/include/uapi/linux/in6.h
@@ -143,6 +143,7 @@ struct in6_flowlabel_req {
 #define IPV6_TLV_PAD1           0
 #define IPV6_TLV_PADN           1
 #define IPV6_TLV_ROUTERALERT    5
+#define IPV6_TLV_CALIPSO        7       /* RFC 5570 */
 #define IPV6_TLV_JUMBO          194
 #define IPV6_TLV_HAO            201     /* home address option */