[dpdk-dev] [PATCH v2] Report an error message if the flag O_NONBLOCK setting fails, then return from function.
Tan, Jianfeng
jianfeng.tan at intel.com
Tue Oct 24 09:26:54 CEST 2017
> -----Original Message-----
> From: Basierski, SebastianX
> Sent: Tuesday, October 24, 2017 1:11 PM
> To: yliu at fridaylinux.org
> Cc: dev at dpdk.org; Basierski, SebastianX; Tan, Jianfeng; stable at dpdk.org
> Subject: [PATCH v2] Report an error message if the flag O_NONBLOCK
> setting fails, then return from function.
>
> Coverity issue: 143439
>
> Fixes: ef53b6030039 ("net/virtio-user: support LSC")
> Cc: jianfeng.tan at intel.com
> cc: stable at dpdk.org
>
> Signed-off-by: SebastianX Basierski <sebastianx.basierski at intel.com>
Except a nit below,
Acked-by: Jianfeng Tan <jianfeng.tan at intel.com>
> ---
> drivers/net/virtio/virtio_user_ethdev.c | 6 +++++-
> 1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/net/virtio/virtio_user_ethdev.c
> b/drivers/net/virtio/virtio_user_ethdev.c
> index 57c964d..fe3a7be 100644
> --- a/drivers/net/virtio/virtio_user_ethdev.c
> +++ b/drivers/net/virtio/virtio_user_ethdev.c
> @@ -86,7 +86,11 @@ virtio_user_read_dev_config(struct virtio_hw *hw,
> size_t offset,
> int flags;
>
> flags = fcntl(dev->vhostfd, F_GETFL);
> - fcntl(dev->vhostfd, F_SETFL, flags | O_NONBLOCK);
> + if (fcntl(dev->vhostfd, F_SETFL,
> + flags | O_NONBLOCK) == -1){
There should be a space between ")" and "{".
> + PMD_DRV_LOG(ERR, "error setting
> O_NONBLOCK flag");
> + return;
> + }
> r = recv(dev->vhostfd, buf, 128, MSG_PEEK);
> if (r == 0 || (r < 0 && errno != EAGAIN)) {
> dev->status &= (~VIRTIO_NET_S_LINK_UP);
> --
> 2.7.4
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