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 #define MAX_HUGEPAGE_SIZES 3 /**< support up to 3 page sizes */
19 * internal configuration structure for the number, size and
20 * mount points of hugepages
22 struct hugepage_info {
23 uint64_t hugepage_sz; /**< size of a huge page */
24 char hugedir[PATH_MAX]; /**< dir where hugetlbfs is mounted */
25 uint32_t num_pages[RTE_MAX_NUMA_NODES];
26 /**< number of hugepages of that size on each socket */
27 int lock_descriptor; /**< file descriptor for hugepage dir */
31 * internal configuration
33 struct internal_config {
34 volatile size_t memory; /**< amount of asked memory */
35 volatile unsigned force_nchannel; /**< force number of channels */
36 volatile unsigned force_nrank; /**< force number of ranks */
37 volatile unsigned no_hugetlbfs; /**< true to disable hugetlbfs */
38 unsigned hugepage_unlink; /**< true to unlink backing files */
39 volatile unsigned no_pci; /**< true to disable PCI */
40 volatile unsigned no_hpet; /**< true to disable HPET */
41 volatile unsigned vmware_tsc_map; /**< true to use VMware TSC mapping
42 * instead of native TSC */
43 volatile unsigned no_shconf; /**< true if there is no shared config */
44 volatile unsigned in_memory;
45 /**< true if DPDK should operate entirely in-memory and not create any
46 * shared files or runtime data.
48 volatile unsigned create_uio_dev; /**< true to create /dev/uioX devices */
49 volatile enum rte_proc_type_t process_type; /**< multi-process proc type */
50 /** true to try allocating memory on specific sockets */
51 volatile unsigned force_sockets;
52 volatile uint64_t socket_mem[RTE_MAX_NUMA_NODES]; /**< amount of memory per socket */
53 volatile unsigned force_socket_limits;
54 volatile uint64_t socket_limit[RTE_MAX_NUMA_NODES]; /**< limit amount of memory per socket */
55 uintptr_t base_virtaddr; /**< base address to try and reserve memory from */
56 volatile unsigned legacy_mem;
57 /**< true to enable legacy memory behavior (no dynamic allocation,
58 * IOVA-contiguous segments).
60 volatile unsigned match_allocations;
61 /**< true to free hugepages exactly as allocated */
62 volatile unsigned single_file_segments;
63 /**< true if storing all pages within single files (per-page-size,
64 * per-node) non-legacy mode only.
66 volatile int syslog_facility; /**< facility passed to openlog() */
67 /** default interrupt mode for VFIO */
68 volatile enum rte_intr_mode vfio_intr_mode;
69 char *hugefile_prefix; /**< the base filename of hugetlbfs files */
70 char *hugepage_dir; /**< specific hugetlbfs directory to use */
71 char *user_mbuf_pool_ops_name;
72 /**< user defined mbuf pool ops name */
73 unsigned num_hugepage_sizes; /**< how many sizes on this system */
74 struct hugepage_info hugepage_info[MAX_HUGEPAGE_SIZES];
75 enum rte_iova_mode iova_mode ; /**< Set IOVA mode on this system */
76 volatile unsigned int init_complete;
77 /**< indicates whether EAL has completed initialization */
79 extern struct internal_config internal_config; /**< Global EAL configuration. */
81 void eal_reset_internal_config(struct internal_config *internal_cfg);
83 #endif /* EAL_INTERNAL_CFG_H */