ceph/src/seastar/dpdk/lib/librte_eal/common/eal_internal_cfg.h

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2010-2014 Intel Corporation
   3  */
   4
   5 /**
   6  * @file
   7  * Holds the structures for the eal internal configuration
   8  */
   9
  10 #ifndef EAL_INTERNAL_CFG_H
  11 #define EAL_INTERNAL_CFG_H
  12
  13 #include <rte_eal.h>
  14 #include <rte_pci_dev_feature_defs.h>
  15
  16 #include "eal_thread.h"
  17
  18 #define MAX_HUGEPAGE_SIZES 3  /**< support up to 3 page sizes */
  19
  20 /*
  21  * internal configuration structure for the number, size and
  22  * mount points of hugepages
  23  */
  24 struct hugepage_info {
  25         uint64_t hugepage_sz;   /**< size of a huge page */
  26         char hugedir[PATH_MAX];    /**< dir where hugetlbfs is mounted */
  27         uint32_t num_pages[RTE_MAX_NUMA_NODES];
  28         /**< number of hugepages of that size on each socket */
  29         int lock_descriptor;    /**< file descriptor for hugepage dir */
  30 };
  31
  32 /**
  33  * internal configuration
  34  */
  35 struct internal_config {
  36         volatile size_t memory;           /**< amount of asked memory */
  37         volatile unsigned force_nchannel; /**< force number of channels */
  38         volatile unsigned force_nrank;    /**< force number of ranks */
  39         volatile unsigned no_hugetlbfs;   /**< true to disable hugetlbfs */
  40         unsigned hugepage_unlink;         /**< true to unlink backing files */
  41         volatile unsigned no_pci;         /**< true to disable PCI */
  42         volatile unsigned no_hpet;        /**< true to disable HPET */
  43         volatile unsigned vmware_tsc_map; /**< true to use VMware TSC mapping
  44                                                                                 * instead of native TSC */
  45         volatile unsigned no_shconf;      /**< true if there is no shared config */
  46         volatile unsigned in_memory;
  47         /**< true if DPDK should operate entirely in-memory and not create any
  48          * shared files or runtime data.
  49          */
  50         volatile unsigned create_uio_dev; /**< true to create /dev/uioX devices */
  51         volatile enum rte_proc_type_t process_type; /**< multi-process proc type */
  52         /** true to try allocating memory on specific sockets */
  53         volatile unsigned force_sockets;
  54         volatile uint64_t socket_mem[RTE_MAX_NUMA_NODES]; /**< amount of memory per socket */
  55         volatile unsigned force_socket_limits;
  56         volatile uint64_t socket_limit[RTE_MAX_NUMA_NODES]; /**< limit amount of memory per socket */
  57         uintptr_t base_virtaddr;          /**< base address to try and reserve memory from */
  58         volatile unsigned legacy_mem;
  59         /**< true to enable legacy memory behavior (no dynamic allocation,
  60          * IOVA-contiguous segments).
  61          */
  62         volatile unsigned match_allocations;
  63         /**< true to free hugepages exactly as allocated */
  64         volatile unsigned single_file_segments;
  65         /**< true if storing all pages within single files (per-page-size,
  66          * per-node) non-legacy mode only.
  67          */
  68         volatile int syslog_facility;     /**< facility passed to openlog() */
  69         /** default interrupt mode for VFIO */
  70         volatile enum rte_intr_mode vfio_intr_mode;
  71         char *hugefile_prefix;      /**< the base filename of hugetlbfs files */
  72         char *hugepage_dir;         /**< specific hugetlbfs directory to use */
  73         char *user_mbuf_pool_ops_name;
  74                         /**< user defined mbuf pool ops name */
  75         unsigned num_hugepage_sizes;      /**< how many sizes on this system */
  76         struct hugepage_info hugepage_info[MAX_HUGEPAGE_SIZES];
  77         enum rte_iova_mode iova_mode ;    /**< Set IOVA mode on this system  */
  78         rte_cpuset_t ctrl_cpuset;         /**< cpuset for ctrl threads */
  79         volatile unsigned int init_complete;
  80         /**< indicates whether EAL has completed initialization */
  81 };
  82 extern struct internal_config internal_config; /**< Global EAL configuration. */
  83
  84 void eal_reset_internal_config(struct internal_config *internal_cfg);
  85
  86 #endif /* EAL_INTERNAL_CFG_H */