[dpdk-dev] [PATCH] net/vhost: fix return value of vhost creates not checked
wangyunjian
wangyunjian at huawei.com
Mon Dec 16 07:38:28 CET 2019
> -----Original Message-----
> From: Tiwei Bie [mailto:tiwei.bie at intel.com]
> Sent: Monday, December 16, 2019 1:33 PM
> To: wangyunjian <wangyunjian at huawei.com>
> Cc: dev at dpdk.org; maxime.coquelin at redhat.com; zhihong.wang at intel.com;
> xudingke <xudingke at huawei.com>; stable at dpdk.org
> Subject: Re: [PATCH] net/vhost: fix return value of vhost creates not checked
>
> On Mon, Dec 16, 2019 at 09:05:59AM +0800, Yunjian Wang wrote:
> > The function eth_dev_vhost_create() could return errors, the return
> > value need to be checked.
> >
> > Fixes: ee584e9710b9 ("vhost: add driver on top of the library")
> > Cc: stable at dpdk.org
> >
> > Signed-off-by: Yunjian Wang <wangyunjian at huawei.com>
> > ---
> > drivers/net/vhost/rte_eth_vhost.c | 6 ++++--
> > 1 file changed, 4 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/net/vhost/rte_eth_vhost.c
> > b/drivers/net/vhost/rte_eth_vhost.c
> > index 46f01a7..7e4faf2 100644
> > --- a/drivers/net/vhost/rte_eth_vhost.c
> > +++ b/drivers/net/vhost/rte_eth_vhost.c
> > @@ -1455,8 +1455,10 @@ struct vhost_xstats_name_off {
> > if (dev->device.numa_node == SOCKET_ID_ANY)
> > dev->device.numa_node = rte_socket_id();
> >
> > - eth_dev_vhost_create(dev, iface_name, queues, dev->device.numa_node,
> > - flags, disable_flags);
> > + ret = eth_dev_vhost_create(dev, iface_name, queues,
> > + dev->device.numa_node, flags, disable_flags);
> > + if (ret == -1)
> > + VHOST_LOG(ERR, "Failed to create %s", name);
>
> This will set "ret" to port id on success, but we shouldn't return port id in
> probe.
OK, I agree. How about function eth_dev_vhost_create can return 0 on success?
Thanks
Yunjian
>
> >
> > out_free:
> > rte_kvargs_free(kvlist);
> > --
> > 1.8.3.1
> >
> >
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