Commit 4adb474b authored by David Kilroy's avatar David Kilroy Committed by John W. Linville
Browse files

orinoco: Move MIC helpers into new file



No functional change.
Signed-off-by: default avatarDavid Kilroy <kilroyd@googlemail.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent fb791b1c
#
# Makefile for the orinoco wireless device drivers.
#
orinoco-objs := main.o scan.o
orinoco-objs := main.o mic.o scan.o
obj-$(CONFIG_HERMES) += orinoco.o hermes.o hermes_dld.o
obj-$(CONFIG_PCMCIA_HERMES) += orinoco_cs.o
......
......@@ -90,12 +90,10 @@
#include <linux/ieee80211.h>
#include <net/iw_handler.h>
#include <linux/scatterlist.h>
#include <linux/crypto.h>
#include "hermes_rid.h"
#include "hermes_dld.h"
#include "scan.h"
#include "mic.h"
#include "orinoco.h"
......@@ -254,74 +252,6 @@ struct orinoco_rx_data {
static int __orinoco_program_rids(struct net_device *dev);
static void __orinoco_set_multicast_list(struct net_device *dev);
/********************************************************************/
/* Michael MIC crypto setup */
/********************************************************************/
#define MICHAEL_MIC_LEN 8
static int orinoco_mic_init(struct orinoco_private *priv)
{
priv->tx_tfm_mic = crypto_alloc_hash("michael_mic", 0, 0);
if (IS_ERR(priv->tx_tfm_mic)) {
printk(KERN_DEBUG "orinoco_mic_init: could not allocate "
"crypto API michael_mic\n");
priv->tx_tfm_mic = NULL;
return -ENOMEM;
}
priv->rx_tfm_mic = crypto_alloc_hash("michael_mic", 0, 0);
if (IS_ERR(priv->rx_tfm_mic)) {
printk(KERN_DEBUG "orinoco_mic_init: could not allocate "
"crypto API michael_mic\n");
priv->rx_tfm_mic = NULL;
return -ENOMEM;
}
return 0;
}
static void orinoco_mic_free(struct orinoco_private *priv)
{
if (priv->tx_tfm_mic)
crypto_free_hash(priv->tx_tfm_mic);
if (priv->rx_tfm_mic)
crypto_free_hash(priv->rx_tfm_mic);
}
static int michael_mic(struct crypto_hash *tfm_michael, u8 *key,
u8 *da, u8 *sa, u8 priority,
u8 *data, size_t data_len, u8 *mic)
{
struct hash_desc desc;
struct scatterlist sg[2];
u8 hdr[ETH_HLEN + 2]; /* size of header + padding */
if (tfm_michael == NULL) {
printk(KERN_WARNING "michael_mic: tfm_michael == NULL\n");
return -1;
}
/* Copy header into buffer. We need the padding on the end zeroed */
memcpy(&hdr[0], da, ETH_ALEN);
memcpy(&hdr[ETH_ALEN], sa, ETH_ALEN);
hdr[ETH_ALEN*2] = priority;
hdr[ETH_ALEN*2+1] = 0;
hdr[ETH_ALEN*2+2] = 0;
hdr[ETH_ALEN*2+3] = 0;
/* Use scatter gather to MIC header and data in one go */
sg_init_table(sg, 2);
sg_set_buf(&sg[0], hdr, sizeof(hdr));
sg_set_buf(&sg[1], data, data_len);
if (crypto_hash_setkey(tfm_michael, key, MIC_KEYLEN))
return -1;
desc.tfm = tfm_michael;
desc.flags = 0;
return crypto_hash_digest(&desc, sg, data_len + sizeof(hdr),
mic);
}
/********************************************************************/
/* Internal helper functions */
/********************************************************************/
......@@ -1001,7 +931,7 @@ static int orinoco_xmit(struct sk_buff *skb, struct net_device *dev)
len = MICHAEL_MIC_LEN;
}
michael_mic(priv->tx_tfm_mic,
orinoco_mic(priv->tx_tfm_mic,
priv->tkip_key[priv->tx_key].tx_mic,
eh->h_dest, eh->h_source, 0 /* priority */,
skb->data + ETH_HLEN, skb->len - ETH_HLEN, mic);
......@@ -1479,7 +1409,7 @@ static void orinoco_rx(struct net_device *dev,
skb_trim(skb, skb->len - MICHAEL_MIC_LEN);
length -= MICHAEL_MIC_LEN;
michael_mic(priv->rx_tfm_mic,
orinoco_mic(priv->rx_tfm_mic,
priv->tkip_key[key_id].rx_mic,
desc->addr1,
src,
......
/* Orinoco MIC helpers
*
* See copyright notice in main.c
*/
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/if_ether.h>
#include <linux/scatterlist.h>
#include <linux/crypto.h>
#include "orinoco.h"
#include "mic.h"
/********************************************************************/
/* Michael MIC crypto setup */
/********************************************************************/
int orinoco_mic_init(struct orinoco_private *priv)
{
priv->tx_tfm_mic = crypto_alloc_hash("michael_mic", 0, 0);
if (IS_ERR(priv->tx_tfm_mic)) {
printk(KERN_DEBUG "orinoco_mic_init: could not allocate "
"crypto API michael_mic\n");
priv->tx_tfm_mic = NULL;
return -ENOMEM;
}
priv->rx_tfm_mic = crypto_alloc_hash("michael_mic", 0, 0);
if (IS_ERR(priv->rx_tfm_mic)) {
printk(KERN_DEBUG "orinoco_mic_init: could not allocate "
"crypto API michael_mic\n");
priv->rx_tfm_mic = NULL;
return -ENOMEM;
}
return 0;
}
void orinoco_mic_free(struct orinoco_private *priv)
{
if (priv->tx_tfm_mic)
crypto_free_hash(priv->tx_tfm_mic);
if (priv->rx_tfm_mic)
crypto_free_hash(priv->rx_tfm_mic);
}
int orinoco_mic(struct crypto_hash *tfm_michael, u8 *key,
u8 *da, u8 *sa, u8 priority,
u8 *data, size_t data_len, u8 *mic)
{
struct hash_desc desc;
struct scatterlist sg[2];
u8 hdr[ETH_HLEN + 2]; /* size of header + padding */
if (tfm_michael == NULL) {
printk(KERN_WARNING "orinoco_mic: tfm_michael == NULL\n");
return -1;
}
/* Copy header into buffer. We need the padding on the end zeroed */
memcpy(&hdr[0], da, ETH_ALEN);
memcpy(&hdr[ETH_ALEN], sa, ETH_ALEN);
hdr[ETH_ALEN*2] = priority;
hdr[ETH_ALEN*2+1] = 0;
hdr[ETH_ALEN*2+2] = 0;
hdr[ETH_ALEN*2+3] = 0;
/* Use scatter gather to MIC header and data in one go */
sg_init_table(sg, 2);
sg_set_buf(&sg[0], hdr, sizeof(hdr));
sg_set_buf(&sg[1], data, data_len);
if (crypto_hash_setkey(tfm_michael, key, MIC_KEYLEN))
return -1;
desc.tfm = tfm_michael;
desc.flags = 0;
return crypto_hash_digest(&desc, sg, data_len + sizeof(hdr),
mic);
}
/* Orinoco MIC helpers
*
* See copyright notice in main.c
*/
#ifndef _ORINOCO_MIC_H_
#define _ORINOCO_MIC_H_
#include <linux/types.h>
#define MICHAEL_MIC_LEN 8
/* Forward declarations */
struct orinoco_private;
struct crypto_hash;
int orinoco_mic_init(struct orinoco_private *priv);
void orinoco_mic_free(struct orinoco_private *priv);
int orinoco_mic(struct crypto_hash *tfm_michael, u8 *key,
u8 *da, u8 *sa, u8 priority,
u8 *data, size_t data_len, u8 *mic);
#endif /* ORINOCO_MIC_H */
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