[dpdk-dev] [PATCH] lib/librte_vhost:fix can't send packet anymore after mempool is full again

[linhaifeng]

From: Linhaifeng <haifeng.lin at huawei.com>

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: Linhaifeng <haifeng.lin at huawei.com>
---
 lib/librte_vhost/vhost_rxtx.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/librte_vhost/vhost_rxtx.c b/lib/librte_vhost/vhost_rxtx.c
index 535c7a1..93a8fff 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;
+			goto finish;
 		}
 		seg_offset = 0;
 		seg_avail = m->buf_len - RTE_PKTMBUF_HEADROOM;
@@ -721,6 +721,7 @@ rte_vhost_dequeue_burst(struct virtio_net *dev, uint16_t queue_id,
 		entry_success++;
 	}
 
+finish:
 	rte_compiler_barrier();
 	vq->used->idx += entry_success;
 	/* Kick guest if required. */
-- 
1.8.5.2.msysgit.0