Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / include / net / sctp / auth.h

diff --git a/kernel/include/net/sctp/auth.h b/kernel/include/net/sctp/auth.h
new file mode 100644 (file)
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+++ b/kernel/include/net/sctp/auth.h
@@ -0,0 +1,120 @@
+/* SCTP kernel implementation
+ * (C) Copyright 2007 Hewlett-Packard Development Company, L.P.
+ *
+ * This file is part of the SCTP kernel implementation
+ *
+ * This SCTP implementation 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, or (at your option)
+ * any later version.
+ *
+ * This SCTP implementation 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 GNU CC; see the file COPYING.  If not, see
+ * <http://www.gnu.org/licenses/>.
+ *
+ * Please send any bug reports or fixes you make to the
+ * email address(es):
+ *    lksctp developers <linux-sctp@vger.kernel.org>
+ *
+ * Written or modified by:
+ *   Vlad Yasevich     <vladislav.yasevich@hp.com>
+ */
+
+#ifndef __sctp_auth_h__
+#define __sctp_auth_h__
+
+#include <linux/list.h>
+#include <linux/crypto.h>
+
+struct sctp_endpoint;
+struct sctp_association;
+struct sctp_authkey;
+struct sctp_hmacalgo;
+
+/*
+ * Define a generic struct that will hold all the info
+ * necessary for an HMAC transform
+ */
+struct sctp_hmac {
+       __u16 hmac_id;          /* one of the above ids */
+       char *hmac_name;        /* name for loading */
+       __u16 hmac_len;         /* length of the signature */
+};
+
+/* This is generic structure that containst authentication bytes used
+ * as keying material.  It's a what is referred to as byte-vector all
+ * over SCTP-AUTH
+ */
+struct sctp_auth_bytes {
+       atomic_t refcnt;
+       __u32 len;
+       __u8  data[];
+};
+
+/* Definition for a shared key, weather endpoint or association */
+struct sctp_shared_key {
+       struct list_head key_list;
+       __u16 key_id;
+       struct sctp_auth_bytes *key;
+};
+
+#define key_for_each(__key, __list_head) \
+       list_for_each_entry(__key, __list_head, key_list)
+
+#define key_for_each_safe(__key, __tmp, __list_head) \
+       list_for_each_entry_safe(__key, __tmp, __list_head, key_list)
+
+static inline void sctp_auth_key_hold(struct sctp_auth_bytes *key)
+{
+       if (!key)
+               return;
+
+       atomic_inc(&key->refcnt);
+}
+
+void sctp_auth_key_put(struct sctp_auth_bytes *key);
+struct sctp_shared_key *sctp_auth_shkey_create(__u16 key_id, gfp_t gfp);
+void sctp_auth_destroy_keys(struct list_head *keys);
+int sctp_auth_asoc_init_active_key(struct sctp_association *asoc, gfp_t gfp);
+struct sctp_shared_key *sctp_auth_get_shkey(
+                               const struct sctp_association *asoc,
+                               __u16 key_id);
+int sctp_auth_asoc_copy_shkeys(const struct sctp_endpoint *ep,
+                               struct sctp_association *asoc,
+                               gfp_t gfp);
+int sctp_auth_init_hmacs(struct sctp_endpoint *ep, gfp_t gfp);
+void sctp_auth_destroy_hmacs(struct crypto_hash *auth_hmacs[]);
+struct sctp_hmac *sctp_auth_get_hmac(__u16 hmac_id);
+struct sctp_hmac *sctp_auth_asoc_get_hmac(const struct sctp_association *asoc);
+void sctp_auth_asoc_set_default_hmac(struct sctp_association *asoc,
+                                    struct sctp_hmac_algo_param *hmacs);
+int sctp_auth_asoc_verify_hmac_id(const struct sctp_association *asoc,
+                                   __be16 hmac_id);
+int sctp_auth_send_cid(sctp_cid_t chunk, const struct sctp_association *asoc);
+int sctp_auth_recv_cid(sctp_cid_t chunk, const struct sctp_association *asoc);
+void sctp_auth_calculate_hmac(const struct sctp_association *asoc,
+                           struct sk_buff *skb,
+                           struct sctp_auth_chunk *auth, gfp_t gfp);
+
+/* API Helpers */
+int sctp_auth_ep_add_chunkid(struct sctp_endpoint *ep, __u8 chunk_id);
+int sctp_auth_ep_set_hmacs(struct sctp_endpoint *ep,
+                           struct sctp_hmacalgo *hmacs);
+int sctp_auth_set_key(struct sctp_endpoint *ep,
+                     struct sctp_association *asoc,
+                     struct sctp_authkey *auth_key);
+int sctp_auth_set_active_key(struct sctp_endpoint *ep,
+                     struct sctp_association *asoc,
+                     __u16 key_id);
+int sctp_auth_del_key_id(struct sctp_endpoint *ep,
+                     struct sctp_association *asoc,
+                     __u16 key_id);
+
+#endif