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Date:      Wed, 28 Feb 2018 21:41:52 +0000 (UTC)
From:      John Baldwin <jhb@FreeBSD.org>
To:        src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org
Subject:   svn commit: r330129 - stable/11/sys/opencrypto
Message-ID:  <201802282141.w1SLfqme078174@repo.freebsd.org>
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Author: jhb
Date: Wed Feb 28 21:41:52 2018
New Revision: 330129
URL: https://svnweb.freebsd.org/changeset/base/330129

Log:
  MFC 327838: Axe tmp_iv from the cryptodev session structure.
  
  Just copyin the IV into the crypto descriptor directly.  This avoids
  copying the IV twice for each operation.
  
  Sponsored by:	Chelsio Communications

Modified:
  stable/11/sys/opencrypto/cryptodev.c
Directory Properties:
  stable/11/   (props changed)

Modified: stable/11/sys/opencrypto/cryptodev.c
==============================================================================
--- stable/11/sys/opencrypto/cryptodev.c	Wed Feb 28 20:51:21 2018	(r330128)
+++ stable/11/sys/opencrypto/cryptodev.c	Wed Feb 28 21:41:52 2018	(r330129)
@@ -278,7 +278,6 @@ struct csession {
 
 	caddr_t		key;
 	int		keylen;
-	u_char		tmp_iv[EALG_MAX_BLOCK_LEN];
 
 	caddr_t		mackey;
 	int		mackeylen;
@@ -818,12 +817,11 @@ cryptodev_op(
 			error = EINVAL;
 			goto bail;
 		}
-		if ((error = copyin(cop->iv, cse->tmp_iv,
+		if ((error = copyin(cop->iv, crde->crd_iv,
 		    cse->txform->blocksize))) {
 			SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
 			goto bail;
 		}
-		bcopy(cse->tmp_iv, crde->crd_iv, cse->txform->blocksize);
 		crde->crd_flags |= CRD_F_IV_EXPLICIT | CRD_F_IV_PRESENT;
 		crde->crd_skip = 0;
 	} else if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */
@@ -987,17 +985,16 @@ cryptodev_aead(
 	crp->crp_opaque = (void *)cse;
 
 	if (caead->iv) {
-		if (caead->ivlen > sizeof cse->tmp_iv) {
+		if (caead->ivlen > sizeof(crde->crd_iv)) {
 			error = EINVAL;
 			SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
 			goto bail;
 		}
 
-		if ((error = copyin(caead->iv, cse->tmp_iv, caead->ivlen))) {
+		if ((error = copyin(caead->iv, crde->crd_iv, caead->ivlen))) {
 			SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
 			goto bail;
 		}
-		bcopy(cse->tmp_iv, crde->crd_iv, caead->ivlen);
 		crde->crd_flags |= CRD_F_IV_EXPLICIT | CRD_F_IV_PRESENT;
 	} else {
 		crde->crd_flags |= CRD_F_IV_PRESENT;

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