ee584e9710
The patch introduces a new PMD. This PMD is implemented as thin wrapper
of librte_vhost. It means librte_vhost is also needed to compile the PMD.
The vhost messages will be handled only when a port is started. So start
a port first, then invoke QEMU.
The PMD has 2 parameters.
- iface: The parameter is used to specify a path to connect to a
virtio-net device.
- queues: The parameter is used to specify the number of the queues
virtio-net device has.
(Default: 1)
Here is an example.
$ ./testpmd -c f -n 4 --vdev 'eth_vhost0,iface=/tmp/sock0,queues=1' -- -i
To connect above testpmd, here is qemu command example.
$ qemu-system-x86_64 \
<snip>
-chardev socket,id=chr0,path=/tmp/sock0 \
-netdev vhost-user,id=net0,chardev=chr0,vhostforce,queues=1 \
-device virtio-net-pci,netdev=net0,mq=on
Signed-off-by: Tetsuya Mukawa <mukawa@igel.co.jp>
Acked-by: Ferruh Yigit <ferruh.yigit@intel.com>
Acked-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Acked-by: Rich Lane <rich.lane@bigswitch.com>
Tested-by: Rich Lane <rich.lane@bigswitch.com>
Update for queue state event name:
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
110 lines
3.2 KiB
C
110 lines
3.2 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright(c) 2016 IGEL Co., Ltd.
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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 IGEL Co., Ltd. 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 _RTE_ETH_VHOST_H_
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#define _RTE_ETH_VHOST_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdint.h>
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#include <stdbool.h>
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#include <rte_virtio_net.h>
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/**
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* Disable features in feature_mask.
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*
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* @param feature_mask
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* Vhost features defined in "linux/virtio_net.h".
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* @return
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* - On success, zero.
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* - On failure, a negative value.
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*/
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int rte_eth_vhost_feature_disable(uint64_t feature_mask);
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/**
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* Enable features in feature_mask.
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*
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* @param feature_mask
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* Vhost features defined in "linux/virtio_net.h".
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* @return
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* - On success, zero.
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* - On failure, a negative value.
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*/
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int rte_eth_vhost_feature_enable(uint64_t feature_mask);
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/**
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* Returns currently supported vhost features.
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*
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* @return
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* Vhost features defined in "linux/virtio_net.h".
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*/
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uint64_t rte_eth_vhost_feature_get(void);
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/*
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* Event description.
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*/
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struct rte_eth_vhost_queue_event {
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uint16_t queue_id;
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bool rx;
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bool enable;
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};
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/**
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* Get queue events from specified port.
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* If a callback for below event is registered by
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* rte_eth_dev_callback_register(), this function will describe what was
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* changed.
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* - RTE_ETH_EVENT_QUEUE_STATE
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* Multiple events may cause only one callback kicking, so call this function
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* while returning 0.
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*
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* @param port_id
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* Port id.
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* @param event
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* Pointer to a rte_eth_vhost_queue_event structure.
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* @return
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* - On success, zero.
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* - On failure, a negative value.
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*/
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int rte_eth_vhost_get_queue_event(uint8_t port_id,
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struct rte_eth_vhost_queue_event *event);
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#ifdef __cplusplus
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}
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#endif
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#endif
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