--- /dev/null
+/*-
+ * 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_
+
+#include <stdint.h>
+
+#define VQ_DESC_NUM 256
+/* Used to indicate that the device is running on a data core */
+#define VIRTIO_DEV_RUNNING 1
+
+/*
+ * Structure contains variables relevant to TX/RX 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 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. */
+} __rte_cache_aligned;
+
+/*
+ * Device structure contains all configuration information relating to the device.
+ */
+struct virtio_net
+{
+ struct vhost_virtqueue *virtqueue_tx; /* Contains all TX virtqueue information. */
+ struct vhost_virtqueue *virtqueue_rx; /* Contains all RX virtqueue information. */
+ struct virtio_memory *mem; /* QEMU memory and memory region information. */
+ struct ether_addr mac_address; /* Device MAC address (Obtained on first TX packet). */
+ uint32_t flags; /* Device flags. Only used to check if device is running on data core. */
+ uint32_t vlan_tag; /* Vlan tag for device. Currently set to device_id (0-63). */
+ uint32_t vmdq_rx_q;
+ uint64_t device_fh; /* device identifier. */
+ uint16_t coreid;
+ volatile uint8_t ready; /* A device is set as ready if the MAC address has been set. */
+ volatile uint8_t remove; /* Device is marked for removal from the data core. */
+ uint32_t virtio_idx; /* Index of virtio device */
+ uint32_t dom_id; /* Domain id of xen guest */
+} ___rte_cache_aligned;
+
+/*
+ * Device linked list structure for configuration.
+ */
+struct virtio_net_config_ll
+{
+ struct virtio_net dev; /* Virtio device. */
+ struct virtio_net_config_ll *next; /* Next entry on linked list. */
+};
+
+/*
+ * 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 {
+ 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. */
+};
+
+#endif
Code Review / deb_dpdk.git / blobdiff