On Fri, 25 Aug 2017, David Harton wrote:
> vmxnet3 rx processing should replenish ring buffers after new buffers
> are available to prevent the interface from getting stuck in a state
> that no new work is processed.
>
> Signed-off-by: David Harton <dhar...@cisco.com>
Thanks for the fix.
Acked-by: Shrikrishna Khare <skh...@vmware.com>
> ---
> drivers/net/vmxnet3/vmxnet3_rxtx.c | 17 +++++++++++++++++
> 1 file changed, 17 insertions(+)
>
> diff --git a/drivers/net/vmxnet3/vmxnet3_rxtx.c
> b/drivers/net/vmxnet3/vmxnet3_rxtx.c
> index d9cf437..9861d35 100644
> --- a/drivers/net/vmxnet3/vmxnet3_rxtx.c
> +++ b/drivers/net/vmxnet3/vmxnet3_rxtx.c
> @@ -880,6 +880,23 @@
> }
> }
>
> + if (unlikely(nb_rxd == 0)) {
> + uint32_t avail;
> + for (ring_idx = 0; ring_idx < VMXNET3_RX_CMDRING_SIZE;
> ring_idx++) {
> + avail =
> vmxnet3_cmd_ring_desc_avail(&rxq->cmd_ring[ring_idx]);
> + if (unlikely(avail > 0)) {
> + /* try to alloc new buf and renew descriptors */
> + vmxnet3_post_rx_bufs(rxq, ring_idx);
> + }
> + }
> + if (unlikely(rxq->shared->ctrl.updateRxProd)) {
> + for (ring_idx = 0; ring_idx < VMXNET3_RX_CMDRING_SIZE;
> ring_idx++) {
> + VMXNET3_WRITE_BAR0_REG(hw, rxprod_reg[ring_idx]
> + (rxq->queue_id * VMXNET3_REG_ALIGN),
> +
> rxq->cmd_ring[ring_idx].next2fill);
> + }
> + }
> + }
> +
> return nb_rx;
> }
>
> --
> 1.8.3.1
>
>
