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f-stack/dpdk/drivers/net/avp/rte_avp_common.h

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/*-
* This file is provided under a dual BSD/LGPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GNU LESSER GENERAL PUBLIC LICENSE
*
* Copyright(c) 2010-2013 Intel Corporation. All rights reserved.
* Copyright(c) 2014-2017 Wind River Systems, Inc. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2.1 of the GNU Lesser General Public License
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* Contact Information:
* Wind River Systems, Inc.
*
*
* BSD LICENSE
*
* Copyright(c) 2010-2013 Intel Corporation. All rights reserved.
* Copyright(c) 2014-2017 Wind River Systems, Inc. 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 _RTE_AVP_COMMON_H_
#define _RTE_AVP_COMMON_H_
#ifdef __KERNEL__
#include <linux/if.h>
#define RTE_STD_C11
#else
#include <stdint.h>
#include <rte_common.h>
#include <rte_config.h>
#include <rte_memory.h>
#include <rte_ether.h>
#include <rte_atomic.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
/**
* AVP name is part of network device name.
*/
#define RTE_AVP_NAMESIZE 32
/**
* AVP alias is a user-defined value used for lookups from secondary
* processes. Typically, this is a UUID.
*/
#define RTE_AVP_ALIASSIZE 128
/*
* Request id.
*/
enum rte_avp_req_id {
RTE_AVP_REQ_UNKNOWN = 0,
RTE_AVP_REQ_CHANGE_MTU,
RTE_AVP_REQ_CFG_NETWORK_IF,
RTE_AVP_REQ_CFG_DEVICE,
RTE_AVP_REQ_SHUTDOWN_DEVICE,
RTE_AVP_REQ_MAX,
};
/**@{ AVP device driver types */
#define RTE_AVP_DRIVER_TYPE_UNKNOWN 0
#define RTE_AVP_DRIVER_TYPE_DPDK 1
#define RTE_AVP_DRIVER_TYPE_KERNEL 2
#define RTE_AVP_DRIVER_TYPE_QEMU 3
/**@} */
/**@{ AVP device operational modes */
#define RTE_AVP_MODE_HOST 0 /**< AVP interface created in host */
#define RTE_AVP_MODE_GUEST 1 /**< AVP interface created for export to guest */
#define RTE_AVP_MODE_TRACE 2 /**< AVP interface created for packet tracing */
/**@} */
/*
* Structure for AVP queue configuration query request/result
*/
struct rte_avp_device_config {
uint64_t device_id; /**< Unique system identifier */
uint32_t driver_type; /**< Device Driver type */
uint32_t driver_version; /**< Device Driver version */
uint32_t features; /**< Negotiated features */
uint16_t num_tx_queues; /**< Number of active transmit queues */
uint16_t num_rx_queues; /**< Number of active receive queues */
uint8_t if_up; /**< 1: interface up, 0: interface down */
} __attribute__ ((__packed__));
/*
* Structure for AVP request.
*/
struct rte_avp_request {
uint32_t req_id; /**< Request id */
RTE_STD_C11
union {
uint32_t new_mtu; /**< New MTU */
uint8_t if_up; /**< 1: interface up, 0: interface down */
struct rte_avp_device_config config; /**< Queue configuration */
};
int32_t result; /**< Result for processing request */
} __attribute__ ((__packed__));
/*
* FIFO struct mapped in a shared memory. It describes a circular buffer FIFO
* Write and read should wrap around. FIFO is empty when write == read
* Writing should never overwrite the read position
*/
struct rte_avp_fifo {
volatile unsigned int write; /**< Next position to be written*/
volatile unsigned int read; /**< Next position to be read */
unsigned int len; /**< Circular buffer length */
unsigned int elem_size; /**< Pointer size - for 32/64 bit OS */
void *volatile buffer[]; /**< The buffer contains mbuf pointers */
};
/*
* AVP packet buffer header used to define the exchange of packet data.
*/
struct rte_avp_desc {
uint64_t pad0;
void *pkt_mbuf; /**< Reference to packet mbuf */
uint8_t pad1[14];
uint16_t ol_flags; /**< Offload features. */
void *next; /**< Reference to next buffer in chain */
void *data; /**< Start address of data in segment buffer. */
uint16_t data_len; /**< Amount of data in segment buffer. */
uint8_t nb_segs; /**< Number of segments */
uint8_t pad2;
uint16_t pkt_len; /**< Total pkt len: sum of all segment data_len. */
uint32_t pad3;
uint16_t vlan_tci; /**< VLAN Tag Control Identifier (CPU order). */
uint32_t pad4;
} __attribute__ ((__aligned__(RTE_CACHE_LINE_SIZE), __packed__));
/**{ AVP device features */
#define RTE_AVP_FEATURE_VLAN_OFFLOAD (1 << 0) /**< Emulated HW VLAN offload */
/**@} */
/**@{ Offload feature flags */
#define RTE_AVP_TX_VLAN_PKT 0x0001 /**< TX packet is a 802.1q VLAN packet. */
#define RTE_AVP_RX_VLAN_PKT 0x0800 /**< RX packet is a 802.1q VLAN packet. */
/**@} */
/**@{ AVP PCI identifiers */
#define RTE_AVP_PCI_VENDOR_ID 0x1af4
#define RTE_AVP_PCI_DEVICE_ID 0x1110
/**@} */
/**@{ AVP PCI subsystem identifiers */
#define RTE_AVP_PCI_SUB_VENDOR_ID RTE_AVP_PCI_VENDOR_ID
#define RTE_AVP_PCI_SUB_DEVICE_ID 0x1104
/**@} */
/**@{ AVP PCI BAR definitions */
#define RTE_AVP_PCI_MMIO_BAR 0
#define RTE_AVP_PCI_MSIX_BAR 1
#define RTE_AVP_PCI_MEMORY_BAR 2
#define RTE_AVP_PCI_MEMMAP_BAR 4
#define RTE_AVP_PCI_DEVICE_BAR 5
#define RTE_AVP_PCI_MAX_BAR 6
/**@} */
/**@{ AVP PCI BAR name definitions */
#define RTE_AVP_MMIO_BAR_NAME "avp-mmio"
#define RTE_AVP_MSIX_BAR_NAME "avp-msix"
#define RTE_AVP_MEMORY_BAR_NAME "avp-memory"
#define RTE_AVP_MEMMAP_BAR_NAME "avp-memmap"
#define RTE_AVP_DEVICE_BAR_NAME "avp-device"
/**@} */
/**@{ AVP PCI MSI-X vectors */
#define RTE_AVP_MIGRATION_MSIX_VECTOR 0 /**< Migration interrupts */
#define RTE_AVP_MAX_MSIX_VECTORS 1
/**@} */
/**@} AVP Migration status/ack register values */
#define RTE_AVP_MIGRATION_NONE 0 /**< Migration never executed */
#define RTE_AVP_MIGRATION_DETACHED 1 /**< Device attached during migration */
#define RTE_AVP_MIGRATION_ATTACHED 2 /**< Device reattached during migration */
#define RTE_AVP_MIGRATION_ERROR 3 /**< Device failed to attach/detach */
/**@} */
/**@} AVP MMIO Register Offsets */
#define RTE_AVP_REGISTER_BASE 0
#define RTE_AVP_INTERRUPT_MASK_OFFSET (RTE_AVP_REGISTER_BASE + 0)
#define RTE_AVP_INTERRUPT_STATUS_OFFSET (RTE_AVP_REGISTER_BASE + 4)
#define RTE_AVP_MIGRATION_STATUS_OFFSET (RTE_AVP_REGISTER_BASE + 8)
#define RTE_AVP_MIGRATION_ACK_OFFSET (RTE_AVP_REGISTER_BASE + 12)
/**@} */
/**@} AVP Interrupt Status Mask */
#define RTE_AVP_MIGRATION_INTERRUPT_MASK (1 << 1)
#define RTE_AVP_APP_INTERRUPTS_MASK 0xFFFFFFFF
#define RTE_AVP_NO_INTERRUPTS_MASK 0
/**@} */
/*
* Maximum number of memory regions to export
*/
#define RTE_AVP_MAX_MAPS 2048
/*
* Description of a single memory region
*/
struct rte_avp_memmap {
void *addr;
rte_iova_t phys_addr;
uint64_t length;
};
/*
* AVP memory mapping validation marker
*/
#define RTE_AVP_MEMMAP_MAGIC 0x20131969
/**@{ AVP memory map versions */
#define RTE_AVP_MEMMAP_VERSION_1 1
#define RTE_AVP_MEMMAP_VERSION RTE_AVP_MEMMAP_VERSION_1
/**@} */
/*
* Defines a list of memory regions exported from the host to the guest
*/
struct rte_avp_memmap_info {
uint32_t magic; /**< Memory validation marker */
uint32_t version; /**< Data format version */
uint32_t nb_maps;
struct rte_avp_memmap maps[RTE_AVP_MAX_MAPS];
};
/*
* AVP device memory validation marker
*/
#define RTE_AVP_DEVICE_MAGIC 0x20131975
/**@{ AVP device map versions
* WARNING: do not change the format or names of these variables. They are
* automatically parsed from the build system to generate the SDK package
* name.
**/
#define RTE_AVP_RELEASE_VERSION_1 1
#define RTE_AVP_RELEASE_VERSION RTE_AVP_RELEASE_VERSION_1
#define RTE_AVP_MAJOR_VERSION_0 0
#define RTE_AVP_MAJOR_VERSION_1 1
#define RTE_AVP_MAJOR_VERSION_2 2
#define RTE_AVP_MAJOR_VERSION RTE_AVP_MAJOR_VERSION_2
#define RTE_AVP_MINOR_VERSION_0 0
#define RTE_AVP_MINOR_VERSION_1 1
#define RTE_AVP_MINOR_VERSION_13 13
#define RTE_AVP_MINOR_VERSION RTE_AVP_MINOR_VERSION_13
/**@} */
/**
* Generates a 32-bit version number from the specified version number
* components
*/
#define RTE_AVP_MAKE_VERSION(_release, _major, _minor) \
((((_release) & 0xffff) << 16) | (((_major) & 0xff) << 8) | ((_minor) & 0xff))
/**
* Represents the current version of the AVP host driver
* WARNING: in the current development branch the host and guest driver
* version should always be the same. When patching guest features back to
* GA releases the host version number should not be updated unless there was
* an actual change made to the host driver.
*/
#define RTE_AVP_CURRENT_HOST_VERSION \
RTE_AVP_MAKE_VERSION(RTE_AVP_RELEASE_VERSION_1, \
RTE_AVP_MAJOR_VERSION_0, \
RTE_AVP_MINOR_VERSION_1)
/**
* Represents the current version of the AVP guest drivers
*/
#define RTE_AVP_CURRENT_GUEST_VERSION \
RTE_AVP_MAKE_VERSION(RTE_AVP_RELEASE_VERSION_1, \
RTE_AVP_MAJOR_VERSION_2, \
RTE_AVP_MINOR_VERSION_13)
/**
* Access AVP device version values
*/
#define RTE_AVP_GET_RELEASE_VERSION(_version) (((_version) >> 16) & 0xffff)
#define RTE_AVP_GET_MAJOR_VERSION(_version) (((_version) >> 8) & 0xff)
#define RTE_AVP_GET_MINOR_VERSION(_version) ((_version) & 0xff)
/**@}*/
/**
* Remove the minor version number so that only the release and major versions
* are used for comparisons.
*/
#define RTE_AVP_STRIP_MINOR_VERSION(_version) ((_version) >> 8)
/**
* Defines the number of mbuf pools supported per device (1 per socket)
*/
#define RTE_AVP_MAX_MEMPOOLS 8
/*
* Defines address translation parameters for each support mbuf pool
*/
struct rte_avp_mempool_info {
void *addr;
rte_iova_t phys_addr;
uint64_t length;
};
/*
* Struct used to create a AVP device. Passed to the kernel in IOCTL call or
* via inter-VM shared memory when used in a guest.
*/
struct rte_avp_device_info {
uint32_t magic; /**< Memory validation marker */
uint32_t version; /**< Data format version */
char ifname[RTE_AVP_NAMESIZE]; /**< Network device name for AVP */
rte_iova_t tx_phys;
rte_iova_t rx_phys;
rte_iova_t alloc_phys;
rte_iova_t free_phys;
uint32_t features; /**< Supported feature bitmap */
uint8_t min_rx_queues; /**< Minimum supported receive/free queues */
uint8_t num_rx_queues; /**< Recommended number of receive/free queues */
uint8_t max_rx_queues; /**< Maximum supported receive/free queues */
uint8_t min_tx_queues; /**< Minimum supported transmit/alloc queues */
uint8_t num_tx_queues;
/**< Recommended number of transmit/alloc queues */
uint8_t max_tx_queues; /**< Maximum supported transmit/alloc queues */
uint32_t tx_size; /**< Size of each transmit queue */
uint32_t rx_size; /**< Size of each receive queue */
uint32_t alloc_size; /**< Size of each alloc queue */
uint32_t free_size; /**< Size of each free queue */
/* Used by Ethtool */
rte_iova_t req_phys;
rte_iova_t resp_phys;
rte_iova_t sync_phys;
void *sync_va;
/* mbuf mempool (used when a single memory area is supported) */
void *mbuf_va;
rte_iova_t mbuf_phys;
/* mbuf mempools */
struct rte_avp_mempool_info pool[RTE_AVP_MAX_MEMPOOLS];
#ifdef __KERNEL__
/* Ethernet info */
char ethaddr[ETH_ALEN];
#else
char ethaddr[ETHER_ADDR_LEN];
#endif
uint8_t mode; /**< device mode, i.e guest, host, trace */
/* mbuf size */
unsigned int mbuf_size;
/*
* unique id to differentiate between two instantiations of the same
* AVP device (i.e., the guest needs to know if the device has been
* deleted and recreated).
*/
uint64_t device_id;
uint32_t max_rx_pkt_len; /**< Maximum receive unit size */
};
#define RTE_AVP_MAX_QUEUES 8 /**< Maximum number of queues per device */
/** Maximum number of chained mbufs in a packet */
#define RTE_AVP_MAX_MBUF_SEGMENTS 5
#define RTE_AVP_DEVICE "avp"
#define RTE_AVP_IOCTL_TEST _IOWR(0, 1, int)
#define RTE_AVP_IOCTL_CREATE _IOWR(0, 2, struct rte_avp_device_info)
#define RTE_AVP_IOCTL_RELEASE _IOWR(0, 3, struct rte_avp_device_info)
#define RTE_AVP_IOCTL_QUERY _IOWR(0, 4, struct rte_avp_device_config)
#ifdef __cplusplus
}
#endif
#endif /* _RTE_AVP_COMMON_H_ */
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