On Mon, Dec 14, 2015 at 6:30 PM, Santosh Shukla <sshukla at mvista.com> wrote:
> virtio_recv_pkts_vec and other virtio vector friend apis are written for
> sse/avx
> instructions. For arm64 in particular, virtio vector implementation does not
> exist(todo).
>
> So virtio pmd driver wont build for targets like i686, arm64. By making
> RTE_VIRTIO_INC_VECTOR=n, Driver can build for non-sse/avx targets and will
> work
> in non-vectored virtio mode.
>
> Signed-off-by: Santosh Shukla <sshukla at mvista.com>
> ---
Ping?
any review / comment on this patch much appreciated. Thanks
> config/common_linuxapp | 1 +
> drivers/net/virtio/Makefile | 2 +-
> drivers/net/virtio/virtio_rxtx.c | 7 +++++++
> 3 files changed, 9 insertions(+), 1 deletion(-)
>
> diff --git a/config/common_linuxapp b/config/common_linuxapp
> index ba9e55d..275fb40 100644
> --- a/config/common_linuxapp
> +++ b/config/common_linuxapp
> @@ -273,6 +273,7 @@ CONFIG_RTE_LIBRTE_VIRTIO_DEBUG_RX=n
> CONFIG_RTE_LIBRTE_VIRTIO_DEBUG_TX=n
> CONFIG_RTE_LIBRTE_VIRTIO_DEBUG_DRIVER=n
> CONFIG_RTE_LIBRTE_VIRTIO_DEBUG_DUMP=n
> +CONFIG_RTE_VIRTIO_INC_VECTOR=y
>
> #
> # Compile burst-oriented VMXNET3 PMD driver
> diff --git a/drivers/net/virtio/Makefile b/drivers/net/virtio/Makefile
> index 43835ba..25a842d 100644
> --- a/drivers/net/virtio/Makefile
> +++ b/drivers/net/virtio/Makefile
> @@ -50,7 +50,7 @@ SRCS-$(CONFIG_RTE_LIBRTE_VIRTIO_PMD) += virtqueue.c
> SRCS-$(CONFIG_RTE_LIBRTE_VIRTIO_PMD) += virtio_pci.c
> SRCS-$(CONFIG_RTE_LIBRTE_VIRTIO_PMD) += virtio_rxtx.c
> SRCS-$(CONFIG_RTE_LIBRTE_VIRTIO_PMD) += virtio_ethdev.c
> -SRCS-$(CONFIG_RTE_LIBRTE_VIRTIO_PMD) += virtio_rxtx_simple.c
> +SRCS-$(CONFIG_RTE_VIRTIO_INC_VECTOR) += virtio_rxtx_simple.c
>
> # this lib depends upon:
> DEPDIRS-$(CONFIG_RTE_LIBRTE_VIRTIO_PMD) += lib/librte_eal lib/librte_ether
> diff --git a/drivers/net/virtio/virtio_rxtx.c
> b/drivers/net/virtio/virtio_rxtx.c
> index 74b39ef..23be1ff 100644
> --- a/drivers/net/virtio/virtio_rxtx.c
> +++ b/drivers/net/virtio/virtio_rxtx.c
> @@ -438,7 +438,9 @@ virtio_dev_rx_queue_setup(struct rte_eth_dev *dev,
>
> dev->data->rx_queues[queue_idx] = vq;
>
> +#ifdef RTE_VIRTIO_INC_VECTOR
> virtio_rxq_vec_setup(vq);
> +#endif
>
> return 0;
> }
> @@ -464,7 +466,10 @@ virtio_dev_tx_queue_setup(struct rte_eth_dev *dev,
> const struct rte_eth_txconf *tx_conf)
> {
> uint8_t vtpci_queue_idx = 2 * queue_idx + VTNET_SQ_TQ_QUEUE_IDX;
> +
> +#ifdef RTE_VIRTIO_INC_VECTOR
> struct virtio_hw *hw = dev->data->dev_private;
> +#endif
> struct virtqueue *vq;
> uint16_t tx_free_thresh;
> int ret;
> @@ -477,6 +482,7 @@ virtio_dev_tx_queue_setup(struct rte_eth_dev *dev,
> return -EINVAL;
> }
>
> +#ifdef RTE_VIRTIO_INC_VECTOR
> /* Use simple rx/tx func if single segment and no offloads */
> if ((tx_conf->txq_flags & VIRTIO_SIMPLE_FLAGS) == VIRTIO_SIMPLE_FLAGS
> &&
> !vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
> @@ -485,6 +491,7 @@ virtio_dev_tx_queue_setup(struct rte_eth_dev *dev,
> dev->rx_pkt_burst = virtio_recv_pkts_vec;
> use_simple_rxtx = 1;
> }
> +#endif
>
> ret = virtio_dev_queue_setup(dev, VTNET_TQ, queue_idx,
> vtpci_queue_idx,
> nb_desc, socket_id, &vq);
> --
> 1.7.9.5
>
