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_pci_dev_feature_defs.h>
16 #include "eal_thread.h"
18 #if defined(RTE_ARCH_ARM)
19 #define MAX_HUGEPAGE_SIZES 4 /**< support up to 4 page sizes */
21 #define MAX_HUGEPAGE_SIZES 3 /**< support up to 3 page sizes */
25 * internal configuration structure for the number, size and
26 * mount points of hugepages
28 struct hugepage_info {
29 uint64_t hugepage_sz; /**< size of a huge page */
30 char hugedir[PATH_MAX]; /**< dir where hugetlbfs is mounted */
31 uint32_t num_pages[RTE_MAX_NUMA_NODES];
32 /**< number of hugepages of that size on each socket */
33 int lock_descriptor; /**< file descriptor for hugepage dir */
36 struct simd_bitwidth {
38 /**< flag indicating if bitwidth is forced and can't be modified */
39 uint16_t bitwidth; /**< bitwidth value */
43 * internal configuration
45 struct internal_config {
46 volatile size_t memory; /**< amount of asked memory */
47 volatile unsigned force_nchannel; /**< force number of channels */
48 volatile unsigned force_nrank; /**< force number of ranks */
49 volatile unsigned no_hugetlbfs; /**< true to disable hugetlbfs */
50 unsigned hugepage_unlink; /**< true to unlink backing files */
51 volatile unsigned no_pci; /**< true to disable PCI */
52 volatile unsigned no_hpet; /**< true to disable HPET */
53 volatile unsigned vmware_tsc_map; /**< true to use VMware TSC mapping
54 * instead of native TSC */
55 volatile unsigned no_shconf; /**< true if there is no shared config */
56 volatile unsigned in_memory;
57 /**< true if DPDK should operate entirely in-memory and not create any
58 * shared files or runtime data.
60 volatile unsigned create_uio_dev; /**< true to create /dev/uioX devices */
61 volatile enum rte_proc_type_t process_type; /**< multi-process proc type */
62 /** true to try allocating memory on specific sockets */
63 volatile unsigned force_sockets;
64 volatile uint64_t socket_mem[RTE_MAX_NUMA_NODES]; /**< amount of memory per socket */
65 volatile unsigned force_socket_limits;
66 volatile uint64_t socket_limit[RTE_MAX_NUMA_NODES]; /**< limit amount of memory per socket */
67 uintptr_t base_virtaddr; /**< base address to try and reserve memory from */
68 volatile unsigned legacy_mem;
69 /**< true to enable legacy memory behavior (no dynamic allocation,
70 * IOVA-contiguous segments).
72 volatile unsigned match_allocations;
73 /**< true to free hugepages exactly as allocated */
74 volatile unsigned single_file_segments;
75 /**< true if storing all pages within single files (per-page-size,
76 * per-node) non-legacy mode only.
78 volatile int syslog_facility; /**< facility passed to openlog() */
79 /** default interrupt mode for VFIO */
80 volatile enum rte_intr_mode vfio_intr_mode;
81 /** the shared VF token for VFIO-PCI bound PF and VFs devices */
82 rte_uuid_t vfio_vf_token;
83 char *hugefile_prefix; /**< the base filename of hugetlbfs files */
84 char *hugepage_dir; /**< specific hugetlbfs directory to use */
85 char *user_mbuf_pool_ops_name;
86 /**< user defined mbuf pool ops name */
87 unsigned num_hugepage_sizes; /**< how many sizes on this system */
88 struct hugepage_info hugepage_info[MAX_HUGEPAGE_SIZES];
89 enum rte_iova_mode iova_mode ; /**< Set IOVA mode on this system */
90 rte_cpuset_t ctrl_cpuset; /**< cpuset for ctrl threads */
91 volatile unsigned int init_complete;
92 /**< indicates whether EAL has completed initialization */
93 unsigned int no_telemetry; /**< true to disable Telemetry */
94 struct simd_bitwidth max_simd_bitwidth;
95 /**< max simd bitwidth path to use */
98 void eal_reset_internal_config(struct internal_config *internal_cfg);
100 #endif /* EAL_INTERNAL_CFG_H */