c2175d2c51
Supports both PCI mode (for usage in guest VMs) and vhost-user mode (for usage in host processes). The rte_virtio subdirectory contains a lot of code lifted from the DPDK virtio-net driver. Most of the PCI and vhost-user code is reused almost exactly as-is, but the virtio code is drastically rewritten as the DPDK code was very network specific. Has been lightly tested with both the bdevio and bdevperf applications in both PCI and vhost-user modes. Still quite a bit of work needed - a list of todo items is included in a README in the module's directory. Signed-off-by: Jim Harris <james.r.harris@intel.com> Change-Id: I85989d3de9ea89a87b719ececdb6d2ac16b77f53 Reviewed-on: https://review.gerrithub.io/374519 Tested-by: SPDK Automated Test System <sys_sgsw@intel.com> Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com> Reviewed-by: Ben Walker <benjamin.walker@intel.com>
81 lines
2.8 KiB
C
81 lines
2.8 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright(c) 2010-2015 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 _VIRTIO_ETHDEV_H_
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#define _VIRTIO_ETHDEV_H_
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#include <stdint.h>
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#include <sys/uio.h>
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#include "virtio_pci.h"
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#define VIRTIO_MAX_RX_QUEUES 128U
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#define VIRTIO_MAX_TX_QUEUES 128U
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#define VIRTIO_MIN_RX_BUFSIZE 64
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struct virtio_req {
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struct iovec *iov;
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uint32_t iovcnt;
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uint32_t start_write;
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uint32_t data_transferred;
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};
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/* Features desired/implemented by this driver. */
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#define VIRTIO_PMD_DEFAULT_GUEST_FEATURES \
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(1u << VIRTIO_SCSI_F_INOUT | \
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1ULL << VIRTIO_F_VERSION_1 | \
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1ULL << VIRTIO_F_IOMMU_PLATFORM)
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#define VIRTIO_PMD_SUPPORTED_GUEST_FEATURES \
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(VIRTIO_PMD_DEFAULT_GUEST_FEATURES)
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/*
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* RX/TX function prototypes
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*/
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int virtio_dev_tx_queue_setup(struct virtio_hw *hw, uint16_t tx_queue_id,
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uint16_t nb_tx_desc, unsigned int socket_id);
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uint16_t virtio_recv_pkts(void *rx_queue, struct virtio_req **reqs,
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uint16_t nb_pkts);
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uint16_t virtio_xmit_pkts(void *tx_queue, struct virtio_req *req);
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int eth_virtio_dev_init(struct virtio_hw *hw, int num_queues);
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int virtio_dev_start(struct virtio_hw *hw);
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struct virtio_hw *get_pci_virtio_hw(void);
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void virtio_interrupt_handler(void *param);
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#endif /* _VIRTIO_ETHDEV_H_ */
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