[dpdk-dev] [PATCH v5 01/11] virtio: Introduce config RTE_VIRTIO_INC_VECTOR
Santosh Shukla
sshukla at mvista.com
Wed Jan 27 03:23:21 CET 2016
Ping?
On Jan 19, 2016 5:16 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.
>
> Disabling RTE_VIRTIO_INC_VECTOR config for :
>
> - i686 arch as i686 target config says:
> config/defconfig_i686-native-linuxapp-gcc says "Vectorized PMD is not
> supported on 32-bit".
>
> - armv7/v8 arch.
>
> Signed-off-by: Santosh Shukla <sshukla at mvista.com>
> ---
> v4--> v5:
> - squashed v4's RTE_VIRTIO_INC_VECTOR patches into one patch.
> - Added ifdefs RTE_xx_xx_INC_VECTOR across _simple_rx_tx flag occurance in
> code.
>
>
> config/common_linuxapp | 1 +
> config/defconfig_arm-armv7a-linuxapp-gcc | 4 +++-
> config/defconfig_arm64-armv8a-linuxapp-gcc | 4 +++-
> config/defconfig_i686-native-linuxapp-gcc | 1 +
> config/defconfig_i686-native-linuxapp-icc | 1 +
> drivers/net/virtio/Makefile | 2 +-
> drivers/net/virtio/virtio_rxtx.c | 16 +++++++++++++++-
> drivers/net/virtio/virtio_rxtx.h | 2 ++
> 8 files changed, 27 insertions(+), 4 deletions(-)
>
> diff --git a/config/common_linuxapp b/config/common_linuxapp
> index 74bc515..8677697 100644
> --- a/config/common_linuxapp
> +++ b/config/common_linuxapp
> @@ -274,6 +274,7 @@ 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/config/defconfig_arm-armv7a-linuxapp-gcc
> b/config/defconfig_arm-armv7a-linuxapp-gcc
> index cbebd64..9f852ce 100644
> --- a/config/defconfig_arm-armv7a-linuxapp-gcc
> +++ b/config/defconfig_arm-armv7a-linuxapp-gcc
> @@ -43,6 +43,9 @@ CONFIG_RTE_FORCE_INTRINSICS=y
> CONFIG_RTE_TOOLCHAIN="gcc"
> CONFIG_RTE_TOOLCHAIN_GCC=y
>
> +# Disable VIRTIO VECTOR support
> +CONFIG_RTE_VIRTIO_INC_VECTOR=n
> +
> # ARM doesn't have support for vmware TSC map
> CONFIG_RTE_LIBRTE_EAL_VMWARE_TSC_MAP_SUPPORT=n
>
> @@ -70,7 +73,6 @@ CONFIG_RTE_LIBRTE_I40E_PMD=n
> CONFIG_RTE_LIBRTE_IXGBE_PMD=n
> CONFIG_RTE_LIBRTE_MLX4_PMD=n
> CONFIG_RTE_LIBRTE_MPIPE_PMD=n
> -CONFIG_RTE_LIBRTE_VIRTIO_PMD=n
> CONFIG_RTE_LIBRTE_VMXNET3_PMD=n
> CONFIG_RTE_LIBRTE_PMD_XENVIRT=n
> CONFIG_RTE_LIBRTE_PMD_BNX2X=n
> diff --git a/config/defconfig_arm64-armv8a-linuxapp-gcc
> b/config/defconfig_arm64-armv8a-linuxapp-gcc
> index 504f3ed..1a638b3 100644
> --- a/config/defconfig_arm64-armv8a-linuxapp-gcc
> +++ b/config/defconfig_arm64-armv8a-linuxapp-gcc
> @@ -45,8 +45,10 @@ CONFIG_RTE_TOOLCHAIN_GCC=y
>
> CONFIG_RTE_CACHE_LINE_SIZE=64
>
> +# Disable VIRTIO VECTOR support
> +CONFIG_RTE_VIRTIO_INC_VECTOR=n
> +
> CONFIG_RTE_IXGBE_INC_VECTOR=n
> -CONFIG_RTE_LIBRTE_VIRTIO_PMD=n
> CONFIG_RTE_LIBRTE_IVSHMEM=n
> CONFIG_RTE_LIBRTE_FM10K_PMD=n
> CONFIG_RTE_LIBRTE_I40E_PMD=n
> diff --git a/config/defconfig_i686-native-linuxapp-gcc
> b/config/defconfig_i686-native-linuxapp-gcc
> index a90de9b..a4b1c49 100644
> --- a/config/defconfig_i686-native-linuxapp-gcc
> +++ b/config/defconfig_i686-native-linuxapp-gcc
> @@ -49,3 +49,4 @@ CONFIG_RTE_LIBRTE_KNI=n
> # Vectorized PMD is not supported on 32-bit
> #
> CONFIG_RTE_IXGBE_INC_VECTOR=n
> +CONFIG_RTE_VIRTIO_INC_VECTOR=n
> diff --git a/config/defconfig_i686-native-linuxapp-icc
> b/config/defconfig_i686-native-linuxapp-icc
> index c021321..f8eb6ad 100644
> --- a/config/defconfig_i686-native-linuxapp-icc
> +++ b/config/defconfig_i686-native-linuxapp-icc
> @@ -49,3 +49,4 @@ CONFIG_RTE_LIBRTE_KNI=n
> # Vectorized PMD is not supported on 32-bit
> #
> CONFIG_RTE_IXGBE_INC_VECTOR=n
> +CONFIG_RTE_VIRTIO_INC_VECTOR=n
> 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 41a1366..d8169d1 100644
> --- a/drivers/net/virtio/virtio_rxtx.c
> +++ b/drivers/net/virtio/virtio_rxtx.c
> @@ -67,7 +67,9 @@
> #define VIRTIO_SIMPLE_FLAGS ((uint32_t)ETH_TXQ_FLAGS_NOMULTSEGS | \
> ETH_TXQ_FLAGS_NOOFFLOADS)
>
> +#ifdef RTE_VIRTIO_INC_VECTOR
> static int use_simple_rxtx;
> +#endif
>
> static void
> vq_ring_free_chain(struct virtqueue *vq, uint16_t desc_idx)
> @@ -307,12 +309,13 @@ virtio_dev_vring_start(struct virtqueue *vq, int
> queue_type)
> nbufs = 0;
> error = ENOSPC;
>
> +#ifdef RTE_VIRTIO_INC_VECTOR
> if (use_simple_rxtx)
> for (i = 0; i < vq->vq_nentries; i++) {
> vq->vq_ring.avail->ring[i] = i;
> vq->vq_ring.desc[i].flags =
> VRING_DESC_F_WRITE;
> }
> -
> +#endif
> memset(&vq->fake_mbuf, 0, sizeof(vq->fake_mbuf));
> for (i = 0; i < RTE_PMD_VIRTIO_RX_MAX_BURST; i++)
> vq->sw_ring[vq->vq_nentries + i] = &vq->fake_mbuf;
> @@ -325,9 +328,11 @@ virtio_dev_vring_start(struct virtqueue *vq, int
> queue_type)
> /******************************************
> * Enqueue allocated buffers *
> *******************************************/
> +#ifdef RTE_VIRTIO_INC_VECTOR
> if (use_simple_rxtx)
> error =
> virtqueue_enqueue_recv_refill_simple(vq, m);
> else
> +#endif
> error = virtqueue_enqueue_recv_refill(vq,
> m);
> if (error) {
> rte_pktmbuf_free(m);
> @@ -340,6 +345,7 @@ virtio_dev_vring_start(struct virtqueue *vq, int
> queue_type)
>
> PMD_INIT_LOG(DEBUG, "Allocated %d bufs", nbufs);
> } else if (queue_type == VTNET_TQ) {
> +#ifdef RTE_VIRTIO_INC_VECTOR
> if (use_simple_rxtx) {
> int mid_idx = vq->vq_nentries >> 1;
> for (i = 0; i < mid_idx; i++) {
> @@ -357,6 +363,7 @@ virtio_dev_vring_start(struct virtqueue *vq, int
> queue_type)
> for (i = mid_idx; i < vq->vq_nentries; i++)
> vq->vq_ring.avail->ring[i] = i;
> }
> +#endif
> }
> }
>
> @@ -423,7 +430,9 @@ 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;
> }
> @@ -449,7 +458,10 @@ 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;
> @@ -462,6 +474,7 @@ 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)) {
> @@ -470,6 +483,7 @@ 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);
> diff --git a/drivers/net/virtio/virtio_rxtx.h
> b/drivers/net/virtio/virtio_rxtx.h
> index 831e492..9be1378 100644
> --- a/drivers/net/virtio/virtio_rxtx.h
> +++ b/drivers/net/virtio/virtio_rxtx.h
> @@ -33,7 +33,9 @@
>
> #define RTE_PMD_VIRTIO_RX_MAX_BURST 64
>
> +#ifdef RTE_VIRTIO_INC_VECTOR
> int virtio_rxq_vec_setup(struct virtqueue *rxq);
>
> int virtqueue_enqueue_recv_refill_simple(struct virtqueue *vq,
> struct rte_mbuf *m);
> +#endif
> --
> 1.7.9.5
>
>
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