[7/7] mac80211: Switch to new AEAD interface

Commit Message

Herbert Xu May 22, 2015, 8:05 a.m. UTC

On Fri, May 22, 2015 at 09:43:28AM +0200, Johannes Berg wrote:
> 
> Oops, sorry, of course - I was running in a VM :)

Thanks!

Does this patch on top help?

Comments

Johannes Berg May 22, 2015, 8:18 a.m. UTC | #1

On Fri, 2015-05-22 at 16:05 +0800, Herbert Xu wrote:
> On Fri, May 22, 2015 at 09:43:28AM +0200, Johannes Berg wrote:
> > 
> > Oops, sorry, of course - I was running in a VM :)
> 
> Thanks!
> 
> Does this patch on top help?

Yep, that fixes things.

johannes

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Herbert Xu May 22, 2015, 8:19 a.m. UTC | #2

On Fri, May 22, 2015 at 10:18:03AM +0200, Johannes Berg wrote:
>
> Yep, that fixes things.

Great I will respin the patches.

Thanks,

Patch

diff --git a/net/mac80211/aes_gmac.c b/net/mac80211/aes_gmac.c
index 7eee32b..133be53 100644
--- a/net/mac80211/aes_gmac.c
+++ b/net/mac80211/aes_gmac.c
@@ -24,22 +24,24 @@ 
 int ieee80211_aes_gmac(struct crypto_aead *tfm, const u8 *aad, u8 *nonce,
 		       const u8 *data, size_t data_len, u8 *mic)
 {
-	struct scatterlist sg[3];
+	struct scatterlist sg[4];
 	char aead_req_data[sizeof(struct aead_request) +
 			   crypto_aead_reqsize(tfm)]
 		__aligned(__alignof__(struct aead_request));
 	struct aead_request *aead_req = (void *)aead_req_data;
-	u8 iv[AES_BLOCK_SIZE];
+	u8 zero[GMAC_MIC_LEN], iv[AES_BLOCK_SIZE];
 
 	if (data_len < GMAC_MIC_LEN)
 		return -EINVAL;
 
 	memset(aead_req, 0, sizeof(aead_req_data));
 
-	sg_init_table(sg, 3);
+	memset(zero, 0, GMAC_MIC_LEN);
+	sg_init_table(sg, 4);
 	sg_set_buf(&sg[0], aad, AAD_LEN);
 	sg_set_buf(&sg[1], data, data_len - GMAC_MIC_LEN);
-	sg_set_buf(&sg[2], mic, GMAC_MIC_LEN);
+	sg_set_buf(&sg[2], zero, GMAC_MIC_LEN);
+	sg_set_buf(&sg[3], mic, GMAC_MIC_LEN);
 
 	memcpy(iv, nonce, GMAC_NONCE_LEN);
 	memset(iv + GMAC_NONCE_LEN, 0, sizeof(iv) - GMAC_NONCE_LEN);