mirror of https://github.com/F-Stack/f-stack.git
120 lines
2.7 KiB
C
120 lines
2.7 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright (c) 2020 Dmitry Kozlyuk
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*/
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#include <rte_errno.h>
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#include <rte_log.h>
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#include <rte_memory.h>
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#include <rte_memzone.h>
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#include "eal_private.h"
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#include "eal_filesystem.h"
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#include "eal_hugepages.h"
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#include "eal_internal_cfg.h"
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#include "eal_windows.h"
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static int
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hugepage_claim_privilege(void)
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{
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static const wchar_t privilege[] = L"SeLockMemoryPrivilege";
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HANDLE token;
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LUID luid;
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TOKEN_PRIVILEGES tp;
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int ret = -1;
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if (!OpenProcessToken(GetCurrentProcess(),
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TOKEN_ADJUST_PRIVILEGES, &token)) {
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RTE_LOG_WIN32_ERR("OpenProcessToken()");
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return -1;
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}
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if (!LookupPrivilegeValueW(NULL, privilege, &luid)) {
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RTE_LOG_WIN32_ERR("LookupPrivilegeValue(\"%S\")", privilege);
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goto exit;
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}
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tp.PrivilegeCount = 1;
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tp.Privileges[0].Luid = luid;
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tp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
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if (!AdjustTokenPrivileges(
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token, FALSE, &tp, sizeof(tp), NULL, NULL)) {
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RTE_LOG_WIN32_ERR("AdjustTokenPrivileges()");
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goto exit;
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}
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/* AdjustTokenPrivileges() may succeed with ERROR_NOT_ALL_ASSIGNED. */
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if (GetLastError() != ERROR_SUCCESS)
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goto exit;
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ret = 0;
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exit:
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CloseHandle(token);
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return ret;
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}
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static int
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hugepage_info_init(void)
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{
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struct hugepage_info *hpi;
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unsigned int socket_id;
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int ret = 0;
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struct internal_config *internal_conf =
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eal_get_internal_configuration();
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/* Only one hugepage size available on Windows. */
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internal_conf->num_hugepage_sizes = 1;
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hpi = &internal_conf->hugepage_info[0];
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hpi->hugepage_sz = GetLargePageMinimum();
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if (hpi->hugepage_sz == 0)
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return -ENOTSUP;
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/* Assume all memory on each NUMA node available for hugepages,
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* because Windows neither advertises additional limits,
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* nor provides an API to query them.
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*/
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for (socket_id = 0; socket_id < rte_socket_count(); socket_id++) {
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ULONGLONG bytes;
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unsigned int numa_node;
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numa_node = eal_socket_numa_node(socket_id);
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if (!GetNumaAvailableMemoryNodeEx(numa_node, &bytes)) {
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RTE_LOG_WIN32_ERR("GetNumaAvailableMemoryNodeEx(%u)",
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numa_node);
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continue;
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}
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hpi->num_pages[socket_id] = bytes / hpi->hugepage_sz;
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RTE_LOG(DEBUG, EAL,
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"Found %u hugepages of %zu bytes on socket %u\n",
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hpi->num_pages[socket_id], hpi->hugepage_sz, socket_id);
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}
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/* No hugepage filesystem on Windows. */
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hpi->lock_descriptor = -1;
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memset(hpi->hugedir, 0, sizeof(hpi->hugedir));
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return ret;
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}
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int
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eal_hugepage_info_init(void)
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{
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if (hugepage_claim_privilege() < 0) {
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RTE_LOG(ERR, EAL, "Cannot claim hugepage privilege\n"
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"Verify that large-page support privilege is assigned to the current user\n");
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return -1;
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}
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if (hugepage_info_init() < 0) {
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RTE_LOG(ERR, EAL, "Cannot discover available hugepages\n");
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return -1;
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}
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return 0;
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}
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