From: Haifeng Lin <haifeng.lin@huawei.com>
Date: Sat, 21 Mar 2015 01:47:00 +0000 (+0800)
Subject: vhost: fix index when mbuf allocation fails
X-Git-Tag: spdx-start~9379
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=5c561b0a234fdf81b012fca96065985c548fcc95;p=dpdk.git

vhost: fix index when mbuf allocation fails

When failed to malloc buffer from mempool we just update last_used_idx but
not used->idx so after many times vhost thought have handle all packets
but virtio_net thought vhost have not handle all packets and will not
update avail->idx.

Signed-off-by: Haifeng Lin <haifeng.lin@huawei.com>
Acked-by: Changchun Ouyang <changchun.ouyang@intel.com>
Acked-by: Huawei Xie <huawei.xie@intel.com>
---

diff --git a/lib/librte_vhost/vhost_rxtx.c b/lib/librte_vhost/vhost_rxtx.c
index 535c7a1f33..510ffe82ab 100644
--- a/lib/librte_vhost/vhost_rxtx.c
+++ b/lib/librte_vhost/vhost_rxtx.c
@@ -609,7 +609,7 @@ rte_vhost_dequeue_burst(struct virtio_net *dev, uint16_t queue_id,
 		if (unlikely(m == NULL)) {
 			RTE_LOG(ERR, VHOST_DATA,
 				"Failed to allocate memory for mbuf.\n");
-			return entry_success;
+			break;	
 		}
 		seg_offset = 0;
 		seg_avail = m->buf_len - RTE_PKTMBUF_HEADROOM;