1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2014 Intel Corporation
7 * Holds the structures for the eal internal configuration
10 #ifndef EAL_INTERNAL_CFG_H
11 #define EAL_INTERNAL_CFG_H
14 #include <rte_os_shim.h>
15 #include <rte_pci_dev_feature_defs.h>
17 #include "eal_thread.h"
19 #if defined(RTE_ARCH_ARM)
20 #define MAX_HUGEPAGE_SIZES 4 /**< support up to 4 page sizes */
22 #define MAX_HUGEPAGE_SIZES 3 /**< support up to 3 page sizes */
26 * internal configuration structure for the number, size and
27 * mount points of hugepages
29 struct hugepage_info {
30 uint64_t hugepage_sz; /**< size of a huge page */
31 char hugedir[PATH_MAX]; /**< dir where hugetlbfs is mounted */
32 uint32_t num_pages[RTE_MAX_NUMA_NODES];
33 /**< number of hugepages of that size on each socket */
34 int lock_descriptor; /**< file descriptor for hugepage dir */
37 struct simd_bitwidth {
39 /**< flag indicating if bitwidth is forced and can't be modified */
40 uint16_t bitwidth; /**< bitwidth value */
43 /** Hugepage backing files discipline. */
44 struct hugepage_file_discipline {
45 /** Unlink files before mapping them to leave no trace in hugetlbfs. */
46 bool unlink_before_mapping;
47 /** Unlink existing files at startup, re-create them before mapping. */
52 * internal configuration
54 struct internal_config {
55 volatile size_t memory; /**< amount of asked memory */
56 volatile unsigned force_nchannel; /**< force number of channels */
57 volatile unsigned force_nrank; /**< force number of ranks */
58 volatile unsigned no_hugetlbfs; /**< true to disable hugetlbfs */
59 struct hugepage_file_discipline hugepage_file;
60 volatile unsigned no_pci; /**< true to disable PCI */
61 volatile unsigned no_hpet; /**< true to disable HPET */
62 volatile unsigned vmware_tsc_map; /**< true to use VMware TSC mapping
63 * instead of native TSC */
64 volatile unsigned no_shconf; /**< true if there is no shared config */
65 volatile unsigned in_memory;
66 /**< true if DPDK should operate entirely in-memory and not create any
67 * shared files or runtime data.
69 volatile unsigned create_uio_dev; /**< true to create /dev/uioX devices */
70 volatile enum rte_proc_type_t process_type; /**< multi-process proc type */
71 /** true to try allocating memory on specific sockets */
72 volatile unsigned force_sockets;
73 volatile uint64_t socket_mem[RTE_MAX_NUMA_NODES]; /**< amount of memory per socket */
74 volatile unsigned force_socket_limits;
75 volatile uint64_t socket_limit[RTE_MAX_NUMA_NODES]; /**< limit amount of memory per socket */
76 uintptr_t base_virtaddr; /**< base address to try and reserve memory from */
77 volatile unsigned legacy_mem;
78 /**< true to enable legacy memory behavior (no dynamic allocation,
79 * IOVA-contiguous segments).
81 volatile unsigned match_allocations;
82 /**< true to free hugepages exactly as allocated */
83 volatile unsigned single_file_segments;
84 /**< true if storing all pages within single files (per-page-size,
85 * per-node) non-legacy mode only.
87 volatile int syslog_facility; /**< facility passed to openlog() */
88 /** default interrupt mode for VFIO */
89 volatile enum rte_intr_mode vfio_intr_mode;
90 /** the shared VF token for VFIO-PCI bound PF and VFs devices */
91 rte_uuid_t vfio_vf_token;
92 char *hugefile_prefix; /**< the base filename of hugetlbfs files */
93 char *hugepage_dir; /**< specific hugetlbfs directory to use */
94 char *user_mbuf_pool_ops_name;
95 /**< user defined mbuf pool ops name */
96 unsigned num_hugepage_sizes; /**< how many sizes on this system */
97 struct hugepage_info hugepage_info[MAX_HUGEPAGE_SIZES];
98 enum rte_iova_mode iova_mode ; /**< Set IOVA mode on this system */
99 rte_cpuset_t ctrl_cpuset; /**< cpuset for ctrl threads */
100 volatile unsigned int init_complete;
101 /**< indicates whether EAL has completed initialization */
102 unsigned int no_telemetry; /**< true to disable Telemetry */
103 struct simd_bitwidth max_simd_bitwidth;
104 /**< max simd bitwidth path to use */
107 void eal_reset_internal_config(struct internal_config *internal_cfg);
109 #endif /* EAL_INTERNAL_CFG_H */