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 */
44 * internal configuration
46 struct internal_config {
47 volatile size_t memory; /**< amount of asked memory */
48 volatile unsigned force_nchannel; /**< force number of channels */
49 volatile unsigned force_nrank; /**< force number of ranks */
50 volatile unsigned no_hugetlbfs; /**< true to disable hugetlbfs */
51 unsigned hugepage_unlink; /**< true to unlink backing files */
52 volatile unsigned no_pci; /**< true to disable PCI */
53 volatile unsigned no_hpet; /**< true to disable HPET */
54 volatile unsigned vmware_tsc_map; /**< true to use VMware TSC mapping
55 * instead of native TSC */
56 volatile unsigned no_shconf; /**< true if there is no shared config */
57 volatile unsigned in_memory;
58 /**< true if DPDK should operate entirely in-memory and not create any
59 * shared files or runtime data.
61 volatile unsigned create_uio_dev; /**< true to create /dev/uioX devices */
62 volatile enum rte_proc_type_t process_type; /**< multi-process proc type */
63 /** true to try allocating memory on specific sockets */
64 volatile unsigned force_sockets;
65 volatile uint64_t socket_mem[RTE_MAX_NUMA_NODES]; /**< amount of memory per socket */
66 volatile unsigned force_socket_limits;
67 volatile uint64_t socket_limit[RTE_MAX_NUMA_NODES]; /**< limit amount of memory per socket */
68 uintptr_t base_virtaddr; /**< base address to try and reserve memory from */
69 volatile unsigned legacy_mem;
70 /**< true to enable legacy memory behavior (no dynamic allocation,
71 * IOVA-contiguous segments).
73 volatile unsigned match_allocations;
74 /**< true to free hugepages exactly as allocated */
75 volatile unsigned single_file_segments;
76 /**< true if storing all pages within single files (per-page-size,
77 * per-node) non-legacy mode only.
79 volatile int syslog_facility; /**< facility passed to openlog() */
80 /** default interrupt mode for VFIO */
81 volatile enum rte_intr_mode vfio_intr_mode;
82 /** the shared VF token for VFIO-PCI bound PF and VFs devices */
83 rte_uuid_t vfio_vf_token;
84 char *hugefile_prefix; /**< the base filename of hugetlbfs files */
85 char *hugepage_dir; /**< specific hugetlbfs directory to use */
86 char *user_mbuf_pool_ops_name;
87 /**< user defined mbuf pool ops name */
88 unsigned num_hugepage_sizes; /**< how many sizes on this system */
89 struct hugepage_info hugepage_info[MAX_HUGEPAGE_SIZES];
90 enum rte_iova_mode iova_mode ; /**< Set IOVA mode on this system */
91 rte_cpuset_t ctrl_cpuset; /**< cpuset for ctrl threads */
92 volatile unsigned int init_complete;
93 /**< indicates whether EAL has completed initialization */
94 unsigned int no_telemetry; /**< true to disable Telemetry */
95 struct simd_bitwidth max_simd_bitwidth;
96 /**< max simd bitwidth path to use */
99 void eal_reset_internal_config(struct internal_config *internal_cfg);
101 #endif /* EAL_INTERNAL_CFG_H */