From: Fan Zhang <roy.fan.zhang@intel.com>
Date: Fri, 27 Apr 2018 14:06:08 +0000 (+0100)
Subject: vhost/crypto: fix checks while moving descriptors
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=613e827fb28687a990428dab4f34b41c1f180462;p=dpdk.git

vhost/crypto: fix checks while moving descriptors

This patch fix final condition check while moving virtqueue
descriptors.

Fixes: 3bb595ecd682 ("vhost/crypto: add request handler")

Signed-off-by: Fan Zhang <roy.fan.zhang@intel.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
---

diff --git a/lib/librte_vhost/vhost_crypto.c b/lib/librte_vhost/vhost_crypto.c
index 620a1df3dc..7396ddd1ef 100644
--- a/lib/librte_vhost/vhost_crypto.c
+++ b/lib/librte_vhost/vhost_crypto.c
@@ -506,7 +506,7 @@ move_desc(struct vring_desc *head, struct vring_desc **cur_desc,
 		left -= desc->len;
 	}
 
-	if (unlikely(left < 0)) {
+	if (unlikely(left > 0)) {
 		VC_LOG_ERR("Incorrect virtio descriptor");
 		return -1;
 	}
@@ -553,7 +553,7 @@ copy_data(void *dst_data, struct vring_desc *head, struct rte_vhost_memory *mem,
 		left -= to_copy;
 	}
 
-	if (unlikely(left < 0)) {
+	if (unlikely(left > 0)) {
 		VC_LOG_ERR("Incorrect virtio descriptor");
 		return -1;
 	}