99a2dd955f
There is no reason for the DPDK libraries to all have 'librte_' prefix on the directory names. This prefix makes the directory names longer and also makes it awkward to add features referring to individual libraries in the build - should the lib names be specified with or without the prefix. Therefore, we can just remove the library prefix and use the library's unique name as the directory name, i.e. 'eal' rather than 'librte_eal' Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
140 lines
3.8 KiB
C
140 lines
3.8 KiB
C
/* SPDX-License-Identifier: (BSD-3-Clause OR LGPL-2.1) */
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/*
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* Copyright(c) 2007-2014 Intel Corporation.
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*/
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#ifndef _RTE_KNI_COMMON_H_
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#define _RTE_KNI_COMMON_H_
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#ifdef __KERNEL__
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#include <linux/if.h>
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#include <asm/barrier.h>
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#define RTE_STD_C11
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#else
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#include <rte_common.h>
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#include <rte_config.h>
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#endif
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/*
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* KNI name is part of memzone name. Must not exceed IFNAMSIZ.
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*/
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#define RTE_KNI_NAMESIZE 16
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#define RTE_CACHE_LINE_MIN_SIZE 64
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/*
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* Request id.
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*/
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enum rte_kni_req_id {
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RTE_KNI_REQ_UNKNOWN = 0,
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RTE_KNI_REQ_CHANGE_MTU,
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RTE_KNI_REQ_CFG_NETWORK_IF,
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RTE_KNI_REQ_CHANGE_MAC_ADDR,
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RTE_KNI_REQ_CHANGE_PROMISC,
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RTE_KNI_REQ_CHANGE_ALLMULTI,
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RTE_KNI_REQ_MAX,
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};
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/*
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* Structure for KNI request.
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*/
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struct rte_kni_request {
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uint32_t req_id; /**< Request id */
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RTE_STD_C11
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union {
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uint32_t new_mtu; /**< New MTU */
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uint8_t if_up; /**< 1: interface up, 0: interface down */
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uint8_t mac_addr[6]; /**< MAC address for interface */
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uint8_t promiscusity;/**< 1: promisc mode enable, 0: disable */
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uint8_t allmulti; /**< 1: all-multicast mode enable, 0: disable */
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};
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int32_t async : 1; /**< 1: request is asynchronous */
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int32_t result; /**< Result for processing request */
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} __attribute__((__packed__));
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/*
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* Fifo struct mapped in a shared memory. It describes a circular buffer FIFO
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* Write and read should wrap around. Fifo is empty when write == read
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* Writing should never overwrite the read position
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*/
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struct rte_kni_fifo {
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#ifdef RTE_USE_C11_MEM_MODEL
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unsigned write; /**< Next position to be written*/
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unsigned read; /**< Next position to be read */
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#else
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volatile unsigned write; /**< Next position to be written*/
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volatile unsigned read; /**< Next position to be read */
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#endif
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unsigned len; /**< Circular buffer length */
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unsigned elem_size; /**< Pointer size - for 32/64 bit OS */
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void *volatile buffer[]; /**< The buffer contains mbuf pointers */
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};
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/*
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* The kernel image of the rte_mbuf struct, with only the relevant fields.
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* Padding is necessary to assure the offsets of these fields
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*/
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struct rte_kni_mbuf {
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void *buf_addr __attribute__((__aligned__(RTE_CACHE_LINE_SIZE)));
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uint64_t buf_iova;
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uint16_t data_off; /**< Start address of data in segment buffer. */
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char pad1[2];
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uint16_t nb_segs; /**< Number of segments. */
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char pad4[2];
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uint64_t ol_flags; /**< Offload features. */
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char pad2[4];
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uint32_t pkt_len; /**< Total pkt len: sum of all segment data_len. */
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uint16_t data_len; /**< Amount of data in segment buffer. */
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char pad3[14];
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void *pool;
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/* fields on second cache line */
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__attribute__((__aligned__(RTE_CACHE_LINE_MIN_SIZE)))
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void *next; /**< Physical address of next mbuf in kernel. */
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};
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/*
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* Struct used to create a KNI device. Passed to the kernel in IOCTL call
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*/
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struct rte_kni_device_info {
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char name[RTE_KNI_NAMESIZE]; /**< Network device name for KNI */
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phys_addr_t tx_phys;
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phys_addr_t rx_phys;
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phys_addr_t alloc_phys;
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phys_addr_t free_phys;
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/* Used by Ethtool */
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phys_addr_t req_phys;
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phys_addr_t resp_phys;
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phys_addr_t sync_phys;
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void * sync_va;
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/* mbuf mempool */
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void * mbuf_va;
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phys_addr_t mbuf_phys;
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uint16_t group_id; /**< Group ID */
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uint32_t core_id; /**< core ID to bind for kernel thread */
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__extension__
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uint8_t force_bind : 1; /**< Flag for kernel thread binding */
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/* mbuf size */
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unsigned mbuf_size;
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unsigned int mtu;
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unsigned int min_mtu;
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unsigned int max_mtu;
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uint8_t mac_addr[6];
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uint8_t iova_mode;
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};
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#define KNI_DEVICE "kni"
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#define RTE_KNI_IOCTL_TEST _IOWR(0, 1, int)
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#define RTE_KNI_IOCTL_CREATE _IOWR(0, 2, struct rte_kni_device_info)
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#define RTE_KNI_IOCTL_RELEASE _IOWR(0, 3, struct rte_kni_device_info)
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#endif /* _RTE_KNI_COMMON_H_ */
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