diff options
author | Jerry Chuang <jerry-chuang@realtek.com> | 2009-11-03 07:17:11 -0200 |
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committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-12-11 12:23:22 -0800 |
commit | 8fc8598e61f6f384f3eaf1d9b09500c12af47b37 (patch) | |
tree | 28045c6c72a4e1046feb96e06114eb69b14dacd6 /drivers/staging/rtl8192u/ieee80211/digest.c | |
parent | 9b8437574759a4ce165ab20c631cd6e14c3148c2 (diff) |
Staging: Added Realtek rtl8192u driver to staging
Add Realtek linux driver for rtl8192u as provided by Realtek
rtl8192u_linux_2.6.0006.1031.2008.tar.gz, send to me C/C staging ML.
This version won't compile against upstream, doesn't follow
Linux CodingStyle and has their own ieee80211 stack.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/staging/rtl8192u/ieee80211/digest.c')
-rw-r--r-- | drivers/staging/rtl8192u/ieee80211/digest.c | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/drivers/staging/rtl8192u/ieee80211/digest.c b/drivers/staging/rtl8192u/ieee80211/digest.c new file mode 100644 index 00000000000..1a95f2d3783 --- /dev/null +++ b/drivers/staging/rtl8192u/ieee80211/digest.c @@ -0,0 +1,108 @@ +/* + * Cryptographic API. + * + * Digest operations. + * + * Copyright (c) 2002 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) + * any later version. + * + */ +//#include <linux/crypto.h> +#include "rtl_crypto.h" +#include <linux/mm.h> +#include <linux/errno.h> +#include <linux/highmem.h> +#include <asm/scatterlist.h> +#include "internal.h" + +static void init(struct crypto_tfm *tfm) +{ + tfm->__crt_alg->cra_digest.dia_init(crypto_tfm_ctx(tfm)); +} + +static void update(struct crypto_tfm *tfm, + struct scatterlist *sg, unsigned int nsg) +{ + unsigned int i; + + for (i = 0; i < nsg; i++) { + + struct page *pg = sg[i].page; + unsigned int offset = sg[i].offset; + unsigned int l = sg[i].length; + + do { + unsigned int bytes_from_page = min(l, ((unsigned int) + (PAGE_SIZE)) - + offset); + char *p = crypto_kmap(pg, 0) + offset; + + tfm->__crt_alg->cra_digest.dia_update + (crypto_tfm_ctx(tfm), p, + bytes_from_page); + crypto_kunmap(p, 0); + crypto_yield(tfm); + offset = 0; + pg++; + l -= bytes_from_page; + } while (l > 0); + } +} + +static void final(struct crypto_tfm *tfm, u8 *out) +{ + tfm->__crt_alg->cra_digest.dia_final(crypto_tfm_ctx(tfm), out); +} + +static int setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int keylen) +{ + u32 flags; + if (tfm->__crt_alg->cra_digest.dia_setkey == NULL) + return -ENOSYS; + return tfm->__crt_alg->cra_digest.dia_setkey(crypto_tfm_ctx(tfm), + key, keylen, &flags); +} + +static void digest(struct crypto_tfm *tfm, + struct scatterlist *sg, unsigned int nsg, u8 *out) +{ + unsigned int i; + + tfm->crt_digest.dit_init(tfm); + + for (i = 0; i < nsg; i++) { + char *p = crypto_kmap(sg[i].page, 0) + sg[i].offset; + tfm->__crt_alg->cra_digest.dia_update(crypto_tfm_ctx(tfm), + p, sg[i].length); + crypto_kunmap(p, 0); + crypto_yield(tfm); + } + crypto_digest_final(tfm, out); +} + +int crypto_init_digest_flags(struct crypto_tfm *tfm, u32 flags) +{ + return flags ? -EINVAL : 0; +} + +int crypto_init_digest_ops(struct crypto_tfm *tfm) +{ + struct digest_tfm *ops = &tfm->crt_digest; + + ops->dit_init = init; + ops->dit_update = update; + ops->dit_final = final; + ops->dit_digest = digest; + ops->dit_setkey = setkey; + + return crypto_alloc_hmac_block(tfm); +} + +void crypto_exit_digest_ops(struct crypto_tfm *tfm) +{ + crypto_free_hmac_block(tfm); +} |