Merge tag 'v2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

[mv-sheeva.git] / include / crypto / if_alg.h

diff --git a/include/crypto/if_alg.h b/include/crypto/if_alg.h
new file mode 100644 (file)
index 0000000..c5813c8
--- /dev/null
+++ b/include/crypto/if_alg.h
@@ -0,0 +1,92 @@
+/*
+ * if_alg: User-space algorithm interface
+ *
+ * Copyright (c) 2010 Herbert Xu <herbert@gondor.apana.org.au>
+ *
+ * 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.
+ *
+ */
+
+#ifndef _CRYPTO_IF_ALG_H
+#define _CRYPTO_IF_ALG_H
+
+#include <linux/compiler.h>
+#include <linux/completion.h>
+#include <linux/if_alg.h>
+#include <linux/types.h>
+#include <net/sock.h>
+
+#define ALG_MAX_PAGES                  16
+
+struct crypto_async_request;
+
+struct alg_sock {
+       /* struct sock must be the first member of struct alg_sock */
+       struct sock sk;
+
+       struct sock *parent;
+
+       const struct af_alg_type *type;
+       void *private;
+};
+
+struct af_alg_completion {
+       struct completion completion;
+       int err;
+};
+
+struct af_alg_control {
+       struct af_alg_iv *iv;
+       int op;
+};
+
+struct af_alg_type {
+       void *(*bind)(const char *name, u32 type, u32 mask);
+       void (*release)(void *private);
+       int (*setkey)(void *private, const u8 *key, unsigned int keylen);
+       int (*accept)(void *private, struct sock *sk);
+
+       struct proto_ops *ops;
+       struct module *owner;
+       char name[14];
+};
+
+struct af_alg_sgl {
+       struct scatterlist sg[ALG_MAX_PAGES];
+       struct page *pages[ALG_MAX_PAGES];
+};
+
+int af_alg_register_type(const struct af_alg_type *type);
+int af_alg_unregister_type(const struct af_alg_type *type);
+
+int af_alg_release(struct socket *sock);
+int af_alg_accept(struct sock *sk, struct socket *newsock);
+
+int af_alg_make_sg(struct af_alg_sgl *sgl, void __user *addr, int len,
+                  int write);
+void af_alg_free_sg(struct af_alg_sgl *sgl);
+
+int af_alg_cmsg_send(struct msghdr *msg, struct af_alg_control *con);
+
+int af_alg_wait_for_completion(int err, struct af_alg_completion *completion);
+void af_alg_complete(struct crypto_async_request *req, int err);
+
+static inline struct alg_sock *alg_sk(struct sock *sk)
+{
+       return (struct alg_sock *)sk;
+}
+
+static inline void af_alg_release_parent(struct sock *sk)
+{
+       sock_put(alg_sk(sk)->parent);
+}
+
+static inline void af_alg_init_completion(struct af_alg_completion *completion)
+{
+       init_completion(&completion->completion);
+}
+
+#endif /* _CRYPTO_IF_ALG_H */