> -----Original Message-----
> From: Vipul Ashri <vipul.as...@oracle.com>
> Sent: Thursday, August 13, 2020 3:29 PM
> To: dev@dpdk.org
> Cc: Xia, Chenbo <chenbo....@intel.com>; vipul.as...@oracle.com;
> edwin.le...@oracle.com; sta...@dpdk.org
> Subject: [PATCH v3] net/virtio: fix wrong variable assignment in helper
> macro
>
> Inside Macro ASSIGN_UNLESS_EQUAL(var, val), assignment to var is always
> failing as assignment done using var_ having local scope only.
> This leads to TX packets not going out and found broken due to cleanup
> malfunctioning. This patch fixes the wrong variable assignment.
>
> Fixes: 57f90f894588 ("net/virtio: reuse packed ring functions")
> Cc: sta...@dpdk.org
>
> Signed-off-by: Vipul Ashri <vipul.as...@oracle.com>
> ---
> drivers/net/virtio/virtqueue.h | 6 ++----
> 1 file changed, 2 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/net/virtio/virtqueue.h
> b/drivers/net/virtio/virtqueue.h
> index 105a9c00c..20c95471e 100644
> --- a/drivers/net/virtio/virtqueue.h
> +++ b/drivers/net/virtio/virtqueue.h
> @@ -607,10 +607,8 @@ virtqueue_notify(struct virtqueue *vq)
>
> /* avoid write operation when necessary, to lessen cache issues */
> #define ASSIGN_UNLESS_EQUAL(var, val) do { \
> - typeof(var) var_ = (var); \
> - typeof(val) val_ = (val); \
> - if ((var_) != (val_)) \
> - (var_) = (val_); \
> + if ((var) != (val)) \
> + (var) = (val); \
> } while (0)
>
> #define virtqueue_clear_net_hdr(hdr) do { \
> --
> 2.28.0.windows.1
Reviewed-by: Chenbo Xia <chenbo....@intel.com>
