5284adad3e
As announced in the deprecation note, the field userdata / udata64
is removed to give more space to the dynamic fields.
This is how the mbuf layout looks like (pahole-style):
word type name byte size
0 void * buf_addr; /* 0 + 8 */
1 rte_iova_t buf_iova /* 8 + 8 */
/* --- RTE_MARKER64 rearm_data; */
2 uint16_t data_off; /* 16 + 2 */
uint16_t refcnt; /* 18 + 2 */
uint16_t nb_segs; /* 20 + 2 */
uint16_t port; /* 22 + 2 */
3 uint64_t ol_flags; /* 24 + 8 */
/* --- RTE_MARKER rx_descriptor_fields1; */
4 uint32_t union packet_type; /* 32 + 4 */
uint32_t pkt_len; /* 36 + 4 */
5 uint16_t data_len; /* 40 + 2 */
uint16_t vlan_tci; /* 42 + 2 */
5.5 uint64_t union hash; /* 44 + 8 */
6.5 uint16_t vlan_tci_outer; /* 52 + 2 */
uint16_t buf_len; /* 54 + 2 */
7 uint64_t timestamp; /* 56 + 8 */
/* --- RTE_MARKER cacheline1; */
8 struct rte_mempool * pool; /* 64 + 8 */
9 struct rte_mbuf * next; /* 72 + 8 */
10 uint64_t union tx_offload; /* 80 + 8 */
11 uint16_t priv_size; /* 88 + 2 */
uint16_t timesync; /* 90 + 2 */
uint32_t seqn; /* 92 + 4 */
12 struct rte_mbuf_ext_shared_info * shinfo; /* 96 + 8 */
13 uint64_t dynfield1[3]; /* 104 + 24 */
16 /* --- END 128 */
Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
Acked-by: Olivier Matz <olivier.matz@6wind.com>
138 lines
3.7 KiB
C
138 lines
3.7 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 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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/* fields on second cache line */
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__attribute__((__aligned__(RTE_CACHE_LINE_MIN_SIZE)))
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void *pool;
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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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