X-Git-Url: https://git.rohieb.name/openwrt.git/blobdiff_plain/25a958e9bfd467a5a394adb76601cb6dc525375d..19b6acd0905aef3f8718e694c0264ef5ddcf6403:/target/linux/generic-2.6/files/crypto/ocf/cryptodev.c

diff --git a/target/linux/generic-2.6/files/crypto/ocf/cryptodev.c b/target/linux/generic-2.6/files/crypto/ocf/cryptodev.c
index 13d57a11f..87a4c379d 100644
--- a/target/linux/generic-2.6/files/crypto/ocf/cryptodev.c
+++ b/target/linux/generic-2.6/files/crypto/ocf/cryptodev.c
@@ -1,8 +1,8 @@
 /*	$OpenBSD: cryptodev.c,v 1.52 2002/06/19 07:22:46 deraadt Exp $	*/
 
 /*-
- * Linux port done by David McCullough <david_mccullough@securecomputing.com>
- * Copyright (C) 2006-2007 David McCullough
+ * Linux port done by David McCullough <david_mccullough@mcafee.com>
+ * Copyright (C) 2006-2010 David McCullough
  * Copyright (C) 2004-2005 Intel Corporation.
  * The license and original author are listed below.
  *
@@ -77,6 +77,7 @@ struct csession_info {
 	u_int16_t	keysize;
 	/* u_int16_t	hashsize;  */
 	u_int16_t	authsize;
+	u_int16_t	authkey;
 	/* u_int16_t	ctxsize; */
 };
 
@@ -197,7 +198,7 @@ cryptodev_op(struct csession *cse, struct crypt_op *cop)
 
 	if (cse->uio.uio_iov[0].iov_base == NULL) {
 		dprintk("%s: iov_base kmalloc(%d) failed\n", __FUNCTION__,
-				cse->uio.uio_iov[0].iov_len);
+				(int)cse->uio.uio_iov[0].iov_len);
 		return (ENOMEM);
 	}
 
@@ -208,18 +209,22 @@ cryptodev_op(struct csession *cse, struct crypt_op *cop)
 		goto bail;
 	}
 
-	if (cse->info.authsize) {
-		crda = crp->crp_desc;
-		if (cse->info.blocksize)
-			crde = crda->crd_next;
-	} else {
-		if (cse->info.blocksize)
+	if (cse->info.authsize && cse->info.blocksize) {
+		if (cop->op == COP_ENCRYPT) {
 			crde = crp->crp_desc;
-		else {
-			dprintk("%s: bad request\n", __FUNCTION__);
-			error = EINVAL;
-			goto bail;
+			crda = crde->crd_next;
+		} else {
+			crda = crp->crp_desc;
+			crde = crda->crd_next;
 		}
+	} else if (cse->info.authsize) {
+		crda = crp->crp_desc;
+	} else if (cse->info.blocksize) {
+		crde = crp->crp_desc;
+	} else {
+		dprintk("%s: bad request\n", __FUNCTION__);
+		error = EINVAL;
+		goto bail;
 	}
 
 	if ((error = copy_from_user(cse->uio.uio_iov[0].iov_base, cop->src,
@@ -300,28 +305,31 @@ cryptodev_op(struct csession *cse, struct crypt_op *cop)
 	 * entry and the crypto_done callback into us.
 	 */
 	error = crypto_dispatch(crp);
-	if (error == 0) {
-		dprintk("%s about to WAIT\n", __FUNCTION__);
+	if (error) {
+		dprintk("%s error in crypto_dispatch\n", __FUNCTION__);
+		goto bail;
+	}
+
+	dprintk("%s about to WAIT\n", __FUNCTION__);
+	/*
+	 * we really need to wait for driver to complete to maintain
+	 * state,  luckily interrupts will be remembered
+	 */
+	do {
+		error = wait_event_interruptible(crp->crp_waitq,
+				((crp->crp_flags & CRYPTO_F_DONE) != 0));
 		/*
-		 * we really need to wait for driver to complete to maintain
-		 * state,  luckily interrupts will be remembered
+		 * we can't break out of this loop or we will leave behind
+		 * a huge mess,  however,  staying here means if your driver
+		 * is broken user applications can hang and not be killed.
+		 * The solution,  fix your driver :-)
 		 */
-		do {
-			error = wait_event_interruptible(crp->crp_waitq,
-					((crp->crp_flags & CRYPTO_F_DONE) != 0));
-			/*
-			 * we can't break out of this loop or we will leave behind
-			 * a huge mess,  however,  staying here means if your driver
-			 * is broken user applications can hang and not be killed.
-			 * The solution,  fix your driver :-)
-			 */
-			if (error) {
-				schedule();
-				error = 0;
-			}
-		} while ((crp->crp_flags & CRYPTO_F_DONE) == 0);
-		dprintk("%s finished WAITING error=%d\n", __FUNCTION__, error);
-	}
+		if (error) {
+			schedule();
+			error = 0;
+		}
+	} while ((crp->crp_flags & CRYPTO_F_DONE) == 0);
+	dprintk("%s finished WAITING error=%d\n", __FUNCTION__, error);
 
 	if (crp->crp_etype != 0) {
 		error = crp->crp_etype;
@@ -625,7 +633,7 @@ cryptodev_ioctl(
 	struct crypt_kop kop;
 	struct crypt_find_op fop;
 	u_int64_t sid;
-	u_int32_t ses;
+	u_int32_t ses = 0;
 	int feat, fd, error = 0, crid;
 	mm_segment_t fs;
 
@@ -744,21 +752,27 @@ cryptodev_ioctl(
 			break;
 		case CRYPTO_MD5_HMAC:
 			info.authsize = MD5_HASH_LEN;
+			info.authkey = 16;
 			break;
 		case CRYPTO_SHA1_HMAC:
 			info.authsize = SHA1_HASH_LEN;
+			info.authkey = 20;
 			break;
 		case CRYPTO_SHA2_256_HMAC:
 			info.authsize = SHA2_256_HASH_LEN;
+			info.authkey = 32;
 			break;
 		case CRYPTO_SHA2_384_HMAC:
 			info.authsize = SHA2_384_HASH_LEN;
+			info.authkey = 48;
   			break;
 		case CRYPTO_SHA2_512_HMAC:
 			info.authsize = SHA2_512_HASH_LEN;
+			info.authkey = 64;
 			break;
 		case CRYPTO_RIPEMD160_HMAC:
 			info.authsize = RIPEMD160_HASH_LEN;
+			info.authkey = 20;
 			break;
 		default:
 			dprintk("%s(%s) - bad mac\n", __FUNCTION__, CIOCGSESSSTR);
@@ -790,10 +804,9 @@ cryptodev_ioctl(
 		if (info.authsize) {
 			cria.cri_alg = sop.mac;
 			cria.cri_klen = sop.mackeylen * 8;
-			if ((info.maxkey && sop.mackeylen > info.maxkey) ||
-					sop.keylen < info.minkey) {
-				dprintk("%s(%s) - mackeylen %d\n", __FUNCTION__, CIOCGSESSSTR,
-						sop.mackeylen);
+			if (info.authkey && sop.mackeylen != info.authkey) {
+				dprintk("%s(%s) - mackeylen %d != %d\n", __FUNCTION__,
+						CIOCGSESSSTR, sop.mackeylen, info.authkey);
 				error = EINVAL;
 				goto bail;
 			}
@@ -1044,5 +1057,5 @@ module_init(cryptodev_init);
 module_exit(cryptodev_exit);
 
 MODULE_LICENSE("BSD");
-MODULE_AUTHOR("David McCullough <david_mccullough@securecomputing.com>");
+MODULE_AUTHOR("David McCullough <david_mccullough@mcafee.com>");
 MODULE_DESCRIPTION("Cryptodev (user interface to OCF)");