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yaml --- r: 134447 b: refs/heads/master c: 4adb474 h: refs/heads/master i: 134445: 27f3a9b 134443: 9f3b5ec 134439: f10305f 134431: 0dea42c v: v3
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David Kilroy
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John W. Linville
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Feb 13, 2009
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,2 +1,2 @@ | ||
| --- | ||
| refs/heads/master: fb791b1cfb74937332a22d6bf06eed7866fbcc3c | ||
| refs/heads/master: 4adb474b6b7e26e1318acab5e98864aa78f9b233 |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,79 @@ | ||
| /* 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; | ||
| } | ||
|
|
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| 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); | ||
|
|
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| if (crypto_hash_setkey(tfm_michael, key, MIC_KEYLEN)) | ||
| return -1; | ||
|
|
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| desc.tfm = tfm_michael; | ||
| desc.flags = 0; | ||
| return crypto_hash_digest(&desc, sg, data_len + sizeof(hdr), | ||
| mic); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,22 @@ | ||
| /* 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); | ||
|
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| #endif /* ORINOCO_MIC_H */ |