4796ad63ba
The vhost sample application demonstrates integration of the Intel(R) Data Plane Development Kit (Intel(R) DPDK) with the Linux KVM hypervisor by implementing the vhost-net offload API. The sample application performs simple packet switching between virtual machines based on Media Access Control (MAC) address or Virtual Local Area Network (VLAN) tag. The splitting of ethernet traffic from an external switch is performed in hardware by the Virtual Machine Device Queues (VMDQ) and Data Center Bridging (DCB) features of the Intel(R) 82599 10 Gigabit Ethernet Controller. Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
84 lines
3.3 KiB
C
84 lines
3.3 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _VHOST_NET_CDEV_H_
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#define _VHOST_NET_CDEV_H_
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#include <linux/vhost.h>
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struct vhost_memory;
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struct vhost_vring_state;
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struct vhost_vring_addr;
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struct vhost_vring_file;
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/*
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* Structure used to identify device context.
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*/
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struct vhost_device_ctx
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{
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pid_t pid; /* PID of process calling the IOCTL. */
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uint64_t fh; /* Populated with fi->fh to track the device index. */
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};
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/*
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* Structure contains function pointers to be defined in virtio-net.c. These
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* functions are called in CUSE context and are used to configure devices.
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*/
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struct vhost_net_device_ops {
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int (* new_device) (struct vhost_device_ctx);
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void (* destroy_device) (struct vhost_device_ctx);
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int (* get_features) (struct vhost_device_ctx, uint64_t *);
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int (* set_features) (struct vhost_device_ctx, uint64_t *);
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int (* set_mem_table) (struct vhost_device_ctx, const void *, uint32_t);
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int (* set_vring_num) (struct vhost_device_ctx, struct vhost_vring_state *);
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int (* set_vring_addr) (struct vhost_device_ctx, struct vhost_vring_addr *);
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int (* set_vring_base) (struct vhost_device_ctx, struct vhost_vring_state *);
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int (* get_vring_base) (struct vhost_device_ctx, uint32_t, struct vhost_vring_state *);
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int (* set_vring_kick) (struct vhost_device_ctx, struct vhost_vring_file *);
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int (* set_vring_call) (struct vhost_device_ctx, struct vhost_vring_file *);
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int (* set_backend) (struct vhost_device_ctx, struct vhost_vring_file *);
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int (* set_owner) (struct vhost_device_ctx);
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int (* reset_owner) (struct vhost_device_ctx);
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};
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int register_cuse_device(const char *base_name, int index, struct vhost_net_device_ops const * const);
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int start_cuse_session_loop(void);
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#endif /* _VHOST_NET_CDEV_H_ */
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