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Diffstat (limited to 'src/dpdk_lib18/librte_vhost/rte_virtio_net.h')
| -rwxr-xr-x | src/dpdk_lib18/librte_vhost/rte_virtio_net.h | 215 |
1 files changed, 0 insertions, 215 deletions
diff --git a/src/dpdk_lib18/librte_vhost/rte_virtio_net.h b/src/dpdk_lib18/librte_vhost/rte_virtio_net.h deleted file mode 100755 index 0bf07c72..00000000 --- a/src/dpdk_lib18/librte_vhost/rte_virtio_net.h +++ /dev/null @@ -1,215 +0,0 @@ -/*- - * BSD LICENSE - * - * Copyright(c) 2010-2014 Intel Corporation. All rights reserved. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef _VIRTIO_NET_H_ -#define _VIRTIO_NET_H_ - -/** - * @file - * Interface to vhost net - */ - -#include <stdint.h> -#include <linux/virtio_ring.h> -#include <linux/virtio_net.h> -#include <sys/eventfd.h> -#include <sys/socket.h> -#include <linux/if.h> - -#include <rte_memory.h> -#include <rte_mempool.h> -#include <rte_mbuf.h> - -/* Used to indicate that the device is running on a data core */ -#define VIRTIO_DEV_RUNNING 1 - -/* Backend value set by guest. */ -#define VIRTIO_DEV_STOPPED -1 - - -/* Enum for virtqueue management. */ -enum {VIRTIO_RXQ, VIRTIO_TXQ, VIRTIO_QNUM}; - -#define BUF_VECTOR_MAX 256 - -/** - * Structure contains buffer address, length and descriptor index - * from vring to do scatter RX. - */ -struct buf_vector { - uint64_t buf_addr; - uint32_t buf_len; - uint32_t desc_idx; -}; - -/** - * Structure contains variables relevant to RX/TX virtqueues. - */ -struct vhost_virtqueue { - struct vring_desc *desc; /**< Virtqueue descriptor ring. */ - struct vring_avail *avail; /**< Virtqueue available ring. */ - struct vring_used *used; /**< Virtqueue used ring. */ - uint32_t size; /**< Size of descriptor ring. */ - uint32_t backend; /**< Backend value to determine if device should started/stopped. */ - uint16_t vhost_hlen; /**< Vhost header length (varies depending on RX merge buffers. */ - volatile uint16_t last_used_idx; /**< Last index used on the available ring */ - volatile uint16_t last_used_idx_res; /**< Used for multiple devices reserving buffers. */ - eventfd_t callfd; /**< Currently unused as polling mode is enabled. */ - eventfd_t kickfd; /**< Used to notify the guest (trigger interrupt). */ - struct buf_vector buf_vec[BUF_VECTOR_MAX]; /**< for scatter RX. */ -} __rte_cache_aligned; - -/** - * Device structure contains all configuration information relating to the device. - */ -struct virtio_net { - struct vhost_virtqueue *virtqueue[VIRTIO_QNUM]; /**< Contains all virtqueue information. */ - struct virtio_memory *mem; /**< QEMU memory and memory region information. */ - uint64_t features; /**< Negotiated feature set. */ - uint64_t device_fh; /**< device identifier. */ - uint32_t flags; /**< Device flags. Only used to check if device is running on data core. */ - char ifname[IFNAMSIZ]; /**< Name of the tap device. */ - void *priv; /**< private context */ -} __rte_cache_aligned; - -/** - * Information relating to memory regions including offsets to addresses in QEMUs memory file. - */ -struct virtio_memory_regions { - uint64_t guest_phys_address; /**< Base guest physical address of region. */ - uint64_t guest_phys_address_end; /**< End guest physical address of region. */ - uint64_t memory_size; /**< Size of region. */ - uint64_t userspace_address; /**< Base userspace address of region. */ - uint64_t address_offset; /**< Offset of region for address translation. */ -}; - - -/** - * Memory structure includes region and mapping information. - */ -struct virtio_memory { - uint64_t base_address; /**< Base QEMU userspace address of the memory file. */ - uint64_t mapped_address; /**< Mapped address of memory file base in our applications memory space. */ - uint64_t mapped_size; /**< Total size of memory file. */ - uint32_t nregions; /**< Number of memory regions. */ - struct virtio_memory_regions regions[0]; /**< Memory region information. */ -}; - -/** - * Device operations to add/remove device. - */ -struct virtio_net_device_ops { - int (*new_device)(struct virtio_net *); /**< Add device. */ - void (*destroy_device)(volatile struct virtio_net *); /**< Remove device. */ -}; - -static inline uint16_t __attribute__((always_inline)) -rte_vring_available_entries(struct virtio_net *dev, uint16_t queue_id) -{ - struct vhost_virtqueue *vq = dev->virtqueue[queue_id]; - return *(volatile uint16_t *)&vq->avail->idx - vq->last_used_idx_res; -} - -/** - * Function to convert guest physical addresses to vhost virtual addresses. - * This is used to convert guest virtio buffer addresses. - */ -static inline uint64_t __attribute__((always_inline)) -gpa_to_vva(struct virtio_net *dev, uint64_t guest_pa) -{ - struct virtio_memory_regions *region; - uint32_t regionidx; - uint64_t vhost_va = 0; - - for (regionidx = 0; regionidx < dev->mem->nregions; regionidx++) { - region = &dev->mem->regions[regionidx]; - if ((guest_pa >= region->guest_phys_address) && - (guest_pa <= region->guest_phys_address_end)) { - vhost_va = region->address_offset + guest_pa; - break; - } - } - return vhost_va; -} - -/** - * Disable features in feature_mask. Returns 0 on success. - */ -int rte_vhost_feature_disable(uint64_t feature_mask); - -/** - * Enable features in feature_mask. Returns 0 on success. - */ -int rte_vhost_feature_enable(uint64_t feature_mask); - -/* Returns currently supported vhost features */ -uint64_t rte_vhost_feature_get(void); - -int rte_vhost_enable_guest_notification(struct virtio_net *dev, uint16_t queue_id, int enable); - -/* Register vhost driver. dev_name could be different for multiple instance support. */ -int rte_vhost_driver_register(const char *dev_name); - -/* Register callbacks. */ -int rte_vhost_driver_callback_register(struct virtio_net_device_ops const * const); -/* Start vhost driver session blocking loop. */ -int rte_vhost_driver_session_start(void); - -/** - * This function adds buffers to the virtio devices RX virtqueue. Buffers can - * be received from the physical port or from another virtual device. A packet - * count is returned to indicate the number of packets that were succesfully - * added to the RX queue. - * @param queue_id - * virtio queue index in mq case - * @return - * num of packets enqueued - */ -uint16_t rte_vhost_enqueue_burst(struct virtio_net *dev, uint16_t queue_id, - struct rte_mbuf **pkts, uint16_t count); - -/** - * This function gets guest buffers from the virtio device TX virtqueue, - * construct host mbufs, copies guest buffer content to host mbufs and - * store them in pkts to be processed. - * @param mbuf_pool - * mbuf_pool where host mbuf is allocated. - * @param queue_id - * virtio queue index in mq case. - * @return - * num of packets dequeued - */ -uint16_t rte_vhost_dequeue_burst(struct virtio_net *dev, uint16_t queue_id, - struct rte_mempool *mbuf_pool, struct rte_mbuf **pkts, uint16_t count); - -#endif /* _VIRTIO_NET_H_ */ |