-/*
+/*
* Cryptographic API.
*
* Deflate algorithm (RFC 1951), implemented here primarily for use
* by IPCOMP (RFC 3173 & RFC 2394).
*
* Copyright (c) 2003 James Morris <jmorris@intercode.com.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)
+ * Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* FIXME: deflate transforms will require up to a total of about 436k of kernel
struct z_stream_s *stream = &ctx->comp_stream;
stream->workspace = vmalloc(zlib_deflate_workspacesize());
- if (!stream->workspace ) {
+ if (!stream->workspace) {
ret = -ENOMEM;
goto out;
}
ret = -EINVAL;
goto out_free;
}
-out:
+out:
return ret;
out_free:
vfree(stream->workspace);
int ret = 0;
struct z_stream_s *stream = &ctx->decomp_stream;
- stream->workspace = kmalloc(zlib_inflate_workspacesize(), GFP_KERNEL);
- if (!stream->workspace ) {
+ stream->workspace = kzalloc(zlib_inflate_workspacesize(), GFP_KERNEL);
+ if (!stream->workspace) {
ret = -ENOMEM;
goto out;
}
- memset(stream->workspace, 0, zlib_inflate_workspacesize());
ret = zlib_inflateInit2(stream, -DEFLATE_DEF_WINBITS);
if (ret != Z_OK) {
ret = -EINVAL;
static void deflate_comp_exit(struct deflate_ctx *ctx)
{
+ zlib_deflateEnd(&ctx->comp_stream);
vfree(ctx->comp_stream.workspace);
}
static void deflate_decomp_exit(struct deflate_ctx *ctx)
{
+ zlib_inflateEnd(&ctx->decomp_stream);
kfree(ctx->decomp_stream.workspace);
}
-static int deflate_init(void *ctx)
+static int deflate_init(struct crypto_tfm *tfm)
{
+ struct deflate_ctx *ctx = crypto_tfm_ctx(tfm);
int ret;
-
+
ret = deflate_comp_init(ctx);
if (ret)
goto out;
return ret;
}
-static void deflate_exit(void *ctx)
+static void deflate_exit(struct crypto_tfm *tfm)
{
+ struct deflate_ctx *ctx = crypto_tfm_ctx(tfm);
+
deflate_comp_exit(ctx);
deflate_decomp_exit(ctx);
}
-static int deflate_compress(void *ctx, const u8 *src, unsigned int slen,
- u8 *dst, unsigned int *dlen)
+static int deflate_compress(struct crypto_tfm *tfm, const u8 *src,
+ unsigned int slen, u8 *dst, unsigned int *dlen)
{
int ret = 0;
- struct deflate_ctx *dctx = ctx;
+ struct deflate_ctx *dctx = crypto_tfm_ctx(tfm);
struct z_stream_s *stream = &dctx->comp_stream;
ret = zlib_deflateReset(stream);
out:
return ret;
}
-
-static int deflate_decompress(void *ctx, const u8 *src, unsigned int slen,
- u8 *dst, unsigned int *dlen)
+
+static int deflate_decompress(struct crypto_tfm *tfm, const u8 *src,
+ unsigned int slen, u8 *dst, unsigned int *dlen)
{
-
+
int ret = 0;
- struct deflate_ctx *dctx = ctx;
+ struct deflate_ctx *dctx = crypto_tfm_ctx(tfm);
struct z_stream_s *stream = &dctx->decomp_stream;
ret = zlib_inflateReset(stream);
if (ret == Z_OK && !stream->avail_in && stream->avail_out) {
u8 zerostuff = 0;
stream->next_in = &zerostuff;
- stream->avail_in = 1;
+ stream->avail_in = 1;
ret = zlib_inflate(stream, Z_FINISH);
}
if (ret != Z_STREAM_END) {
.cra_ctxsize = sizeof(struct deflate_ctx),
.cra_module = THIS_MODULE,
.cra_list = LIST_HEAD_INIT(alg.cra_list),
+ .cra_init = deflate_init,
+ .cra_exit = deflate_exit,
.cra_u = { .compress = {
- .coa_init = deflate_init,
- .coa_exit = deflate_exit,
.coa_compress = deflate_compress,
.coa_decompress = deflate_decompress } }
};
-static int __init init(void)
+static int __init deflate_mod_init(void)
{
return crypto_register_alg(&alg);
}
-static void __exit fini(void)
+static void __exit deflate_mod_fini(void)
{
crypto_unregister_alg(&alg);
}
-module_init(init);
-module_exit(fini);
+module_init(deflate_mod_init);
+module_exit(deflate_mod_fini);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Deflate Compression Algorithm for IPCOMP");