[dpdk-dev] [PATCH] vhost: Fix the vhost broken issue

[Ouyang Changchun <changchun.ouyang@intel.com>]

As the vhost sample is broken by the following commit,  
  commit 08b563ffb19d8baf59dd84200f25bc85031d18a7    
  Author: Olivier Matz <olivier.matz@6wind.com>    
  Date:   Thu Sep 11 14:15:35 2014 +0100      
  mbuf: replace data pointer by an offset

It leads to segment fault error in vhost when binding a virtio
device MAC address to its corresponding VMDq pool by executing
command line 'start tx-first' in test-pmd on guest.

This patch fixes that issue. 

Signed-off-by: Changchun Ouyang <changchun.ouyang@intel.com>
---
 examples/vhost/main.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/examples/vhost/main.c b/examples/vhost/main.c
index 9cf8e20..a6db607 100644
--- a/examples/vhost/main.c
+++ b/examples/vhost/main.c
@@ -1782,6 +1782,7 @@ virtio_dev_tx(struct virtio_net* dev, struct rte_mempool *mbuf_pool)
 		/* Setup dummy mbuf. This is copied to a real mbuf if transmitted out the physical port. */
 		m.data_len = desc->len;
 		m.pkt_len = desc->len;
+		m.buf_addr = (void *)(uintptr_t)buff_addr;
 		m.data_off = 0;
 
 		PRINT_PACKET(dev, (uintptr_t)buff_addr, desc->len, 0);
-- 
1.8.4.2