nuke the old d80211 backport - will be replaced soon

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@7340 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 0 insertions, 328 deletions

diff --git a/package/d80211/src/wep.c b/package/d80211/src/wep.c
deleted file mode 100644
index 6a96ade59e..0000000000
--- a/package/d80211/src/wep.c
+++ /dev/null
@@ -1,328 +0,0 @@
-/*
- * Software WEP encryption implementation
- * Copyright 2002, Jouni Malinen <jkmaline@cc.hut.fi>
- * Copyright 2003, Instant802 Networks, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/netdevice.h>
-#include <linux/types.h>
-#include <linux/random.h>
-#include <linux/compiler.h>
-#include <linux/crc32.h>
-#include <linux/crypto.h>
-#include <linux/err.h>
-#include <linux/mm.h>
-#include <asm/scatterlist.h>
-
-#include <net/d80211.h>
-#include "ieee80211_i.h"
-#include "wep.h"
-
-
-int ieee80211_wep_init(struct ieee80211_local *local)
-{
-	/* start WEP IV from a random value */
-	get_random_bytes(&local->wep_iv, WEP_IV_LEN);
-
-	local->wep_tx_tfm = crypto_alloc_blkcipher("ecb(arc4)", 0,
-						CRYPTO_ALG_ASYNC);
-	if (IS_ERR(local->wep_tx_tfm))
-		return -ENOMEM;
-
-	local->wep_rx_tfm = crypto_alloc_blkcipher("ecb(arc4)", 0,
-						CRYPTO_ALG_ASYNC);
-	if (IS_ERR(local->wep_rx_tfm)) {
-		crypto_free_blkcipher(local->wep_tx_tfm);
-		return -ENOMEM;
-	}
-
-	return 0;
-}
-
-void ieee80211_wep_free(struct ieee80211_local *local)
-{
-	crypto_free_blkcipher(local->wep_tx_tfm);
-	crypto_free_blkcipher(local->wep_rx_tfm);
-}
-
-static inline int ieee80211_wep_weak_iv(u32 iv, int keylen)
-{
-	/* Fluhrer, Mantin, and Shamir have reported weaknesses in the
-	 * key scheduling algorithm of RC4. At least IVs (KeyByte + 3,
-	 * 0xff, N) can be used to speedup attacks, so avoid using them. */
-	if ((iv & 0xff00) == 0xff00) {
-		u8 B = (iv >> 16) & 0xff;
-		if (B >= 3 && B < 3 + keylen)
-			return 1;
-	}
-	return 0;
-}
-
-
-void ieee80211_wep_get_iv(struct ieee80211_local *local,
-			  struct ieee80211_key *key, u8 *iv)
-{
-	local->wep_iv++;
-	if (ieee80211_wep_weak_iv(local->wep_iv, key->keylen))
-		local->wep_iv += 0x0100;
-
-	if (!iv)
-		return;
-
-	*iv++ = (local->wep_iv >> 16) & 0xff;
-	*iv++ = (local->wep_iv >> 8) & 0xff;
-	*iv++ = local->wep_iv & 0xff;
-	*iv++ = key->keyidx << 6;
-}
-
-
-u8 * ieee80211_wep_add_iv(struct ieee80211_local *local,
-			  struct sk_buff *skb,
-			  struct ieee80211_key *key)
-{
-	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
-	u16 fc;
-	int hdrlen;
-	u8 *newhdr;
-
-	fc = le16_to_cpu(hdr->frame_control);
-	fc |= IEEE80211_FCTL_PROTECTED;
-	hdr->frame_control = cpu_to_le16(fc);
-
-	if ((skb_headroom(skb) < WEP_IV_LEN ||
-	     skb_tailroom(skb) < WEP_ICV_LEN)) {
-		I802_DEBUG_INC(local->tx_expand_skb_head);
-		if (unlikely(pskb_expand_head(skb, WEP_IV_LEN, WEP_ICV_LEN,
-					      GFP_ATOMIC)))
-			return NULL;
-	}
-
-	hdrlen = ieee80211_get_hdrlen(fc);
-	newhdr = skb_push(skb, WEP_IV_LEN);
-	memmove(newhdr, newhdr + WEP_IV_LEN, hdrlen);
-	ieee80211_wep_get_iv(local, key, newhdr + hdrlen);
-	return newhdr + hdrlen;
-}
-
-
-void ieee80211_wep_remove_iv(struct ieee80211_local *local,
-			     struct sk_buff *skb,
-			     struct ieee80211_key *key)
-{
-	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
-	u16 fc;
-	int hdrlen;
-
-	fc = le16_to_cpu(hdr->frame_control);
-	hdrlen = ieee80211_get_hdrlen(fc);
-	memmove(skb->data + WEP_IV_LEN, skb->data, hdrlen);
-	skb_pull(skb, WEP_IV_LEN);
-}
-
-
-/* Perform WEP encryption using given key. data buffer must have tailroom
- * for 4-byte ICV. data_len must not include this ICV. Note: this function
- * does _not_ add IV. data = RC4(data | CRC32(data)) */
-void ieee80211_wep_encrypt_data(struct crypto_blkcipher *tfm, u8 *rc4key,
-				size_t klen, u8 *data, size_t data_len)
-{
-	struct blkcipher_desc desc = { .tfm = tfm };
-	struct scatterlist sg;
-	__le32 *icv;
-
-	icv = (__le32 *)(data + data_len);
-	*icv = cpu_to_le32(~crc32_le(~0, data, data_len));
-
-	crypto_blkcipher_setkey(tfm, rc4key, klen);
-	sg.page = virt_to_page(data);
-	sg.offset = offset_in_page(data);
-	sg.length = data_len + WEP_ICV_LEN;
-	crypto_blkcipher_encrypt(&desc, &sg, &sg, sg.length);
-}
-
-
-/* Perform WEP encryption on given skb. 4 bytes of extra space (IV) in the
- * beginning of the buffer 4 bytes of extra space (ICV) in the end of the
- * buffer will be added. Both IV and ICV will be transmitted, so the
- * payload length increases with 8 bytes.
- *
- * WEP frame payload: IV + TX key idx, RC4(data), ICV = RC4(CRC32(data))
- */
-int ieee80211_wep_encrypt(struct ieee80211_local *local, struct sk_buff *skb,
-			  struct ieee80211_key *key)
-{
-	u32 klen;
-	u8 *rc4key, *iv;
-	size_t len;
-
-	if (!key || key->alg != ALG_WEP)
-		return -1;
-
-	klen = 3 + key->keylen;
-	rc4key = kmalloc(klen, GFP_ATOMIC);
-	if (!rc4key)
-		return -1;
-
-	iv = ieee80211_wep_add_iv(local, skb, key);
-	if (!iv) {
-		kfree(rc4key);
-		return -1;
-	}
-
-	len = skb->len - (iv + WEP_IV_LEN - skb->data);
-
-	/* Prepend 24-bit IV to RC4 key */
-	memcpy(rc4key, iv, 3);
-
-	/* Copy rest of the WEP key (the secret part) */
-	memcpy(rc4key + 3, key->key, key->keylen);
-
-	/* Add room for ICV */
-	skb_put(skb, WEP_ICV_LEN);
-
-	ieee80211_wep_encrypt_data(local->wep_tx_tfm, rc4key, klen,
-				   iv + WEP_IV_LEN, len);
-
-	kfree(rc4key);
-
-	return 0;
-}
-
-
-/* Perform WEP decryption using given key. data buffer includes encrypted
- * payload, including 4-byte ICV, but _not_ IV. data_len must not include ICV.
- * Return 0 on success and -1 on ICV mismatch. */
-int ieee80211_wep_decrypt_data(struct crypto_blkcipher *tfm, u8 *rc4key,
-			       size_t klen, u8 *data, size_t data_len)
-{
-	struct blkcipher_desc desc = { .tfm = tfm };
-	struct scatterlist sg;
-	__le32 crc;
-
-	crypto_blkcipher_setkey(tfm, rc4key, klen);
-	sg.page = virt_to_page(data);
-	sg.offset = offset_in_page(data);
-	sg.length = data_len + WEP_ICV_LEN;
-	crypto_blkcipher_decrypt(&desc, &sg, &sg, sg.length);
-
-	crc = cpu_to_le32(~crc32_le(~0, data, data_len));
-	if (memcmp(&crc, data + data_len, WEP_ICV_LEN) != 0)
-		/* ICV mismatch */
-		return -1;
-
-	return 0;
-}
-
-
-/* Perform WEP decryption on given skb. Buffer includes whole WEP part of
- * the frame: IV (4 bytes), encrypted payload (including SNAP header),
- * ICV (4 bytes). skb->len includes both IV and ICV.
- *
- * Returns 0 if frame was decrypted successfully and ICV was correct and -1 on
- * failure. If frame is OK, IV and ICV will be removed, i.e., decrypted payload
- * is moved to the beginning of the skb and skb length will be reduced.
- */
-int ieee80211_wep_decrypt(struct ieee80211_local *local, struct sk_buff *skb,
-			  struct ieee80211_key *key)
-{
-	u32 klen;
-	u8 *rc4key;
-	u8 keyidx;
-	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
-	u16 fc;
-	int hdrlen;
-	size_t len;
-	int ret = 0;
-
-	fc = le16_to_cpu(hdr->frame_control);
-	if (!(fc & IEEE80211_FCTL_PROTECTED))
-		return -1;
-
-	hdrlen = ieee80211_get_hdrlen(fc);
-
-	if (skb->len < 8 + hdrlen)
-		return -1;
-
-	len = skb->len - hdrlen - 8;
-
-	keyidx = skb->data[hdrlen + 3] >> 6;
-
-	if (!key || keyidx != key->keyidx || key->alg != ALG_WEP)
-		return -1;
-
-	klen = 3 + key->keylen;
-
-	rc4key = kmalloc(klen, GFP_ATOMIC);
-	if (!rc4key)
-		return -1;
-
-	/* Prepend 24-bit IV to RC4 key */
-	memcpy(rc4key, skb->data + hdrlen, 3);
-
-	/* Copy rest of the WEP key (the secret part) */
-	memcpy(rc4key + 3, key->key, key->keylen);
-
-	if (ieee80211_wep_decrypt_data(local->wep_rx_tfm, rc4key, klen,
-				       skb->data + hdrlen + WEP_IV_LEN,
-				       len)) {
-		printk(KERN_DEBUG "WEP decrypt failed (ICV)\n");
-		ret = -1;
-	}
-
-	kfree(rc4key);
-
-	/* Trim ICV */
-	skb_trim(skb, skb->len - WEP_ICV_LEN);
-
-	/* Remove IV */
-	memmove(skb->data + WEP_IV_LEN, skb->data, hdrlen);
-	skb_pull(skb, WEP_IV_LEN);
-
-	return ret;
-}
-
-
-int ieee80211_wep_get_keyidx(struct sk_buff *skb)
-{
-	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
-	u16 fc;
-	int hdrlen;
-
-	fc = le16_to_cpu(hdr->frame_control);
-	if (!(fc & IEEE80211_FCTL_PROTECTED))
-		return -1;
-
-	hdrlen = ieee80211_get_hdrlen(fc);
-
-	if (skb->len < 8 + hdrlen)
-		return -1;
-
-	return skb->data[hdrlen + 3] >> 6;
-}
-
-
-u8 * ieee80211_wep_is_weak_iv(struct sk_buff *skb, struct ieee80211_key *key)
-{
-	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
-	u16 fc;
-	int hdrlen;
-	u8 *ivpos;
-	u32 iv;
-
-	fc = le16_to_cpu(hdr->frame_control);
-	if (!(fc & IEEE80211_FCTL_PROTECTED))
-		return NULL;
-
-	hdrlen = ieee80211_get_hdrlen(fc);
-	ivpos = skb->data + hdrlen;
-	iv = (ivpos[0] << 16) | (ivpos[1] << 8) | ivpos[2];
-
-	if (ieee80211_wep_weak_iv(iv, key->keylen))
-		return ivpos;
-
-	return NULL;
-}