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authorDamjan Marion <damarion@cisco.com>2017-09-08 12:26:12 +0200
committerDave Barach <openvpp@barachs.net>2017-09-08 15:24:50 +0000
commit3b64d6334b4e8d0759cff043a55042f88d1ccb0e (patch)
tree199b79ee32c1f5eb7596b2a4a6dbc8c1290b1b59 /src/vlib/unix
parent2234983112fb9099135fcd1da9186004cbdf6e21 (diff)
vlib: move linux-specific code to vlib/linux
Change-Id: Id79d2c2be7a98e15416a537c890a8f2dd6d4464d Signed-off-by: Damjan Marion <damarion@cisco.com>
Diffstat (limited to 'src/vlib/unix')
-rw-r--r--src/vlib/unix/physmem.c439
-rw-r--r--src/vlib/unix/unix.h17
-rw-r--r--src/vlib/unix/util.c219
3 files changed, 0 insertions, 675 deletions
diff --git a/src/vlib/unix/physmem.c b/src/vlib/unix/physmem.c
deleted file mode 100644
index d5d5d6c8ddd..00000000000
--- a/src/vlib/unix/physmem.c
+++ /dev/null
@@ -1,439 +0,0 @@
-/*
- * Copyright (c) 2015 Cisco and/or its affiliates.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-/*
- * physmem.c: Unix physical memory
- *
- * Copyright (c) 2008 Eliot Dresselhaus
- *
- * Permission is hereby granted, free of charge, to any person obtaining
- * a copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sublicense, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice shall be
- * included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
- * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
- * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
- * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-#include <unistd.h>
-#include <sys/types.h>
-#include <sys/mount.h>
-#include <sys/mman.h>
-#include <sys/fcntl.h>
-#include <sys/stat.h>
-#include <numa.h>
-#include <numaif.h>
-
-#include <vlib/vlib.h>
-#include <vlib/physmem.h>
-#include <vlib/unix/unix.h>
-
-#ifndef __NR_memfd_create
-#if defined __x86_64__
-#define __NR_memfd_create 319
-#elif defined __arm__
-#define __NR_memfd_create 385
-#elif defined __aarch64__
-#define __NR_memfd_create 279
-#else
-#error "__NR_memfd_create unknown for this architecture"
-#endif
-#endif
-
-static inline int
-memfd_create (const char *name, unsigned int flags)
-{
- return syscall (__NR_memfd_create, name, flags);
-}
-
-#ifndef F_LINUX_SPECIFIC_BASE
-#define F_LINUX_SPECIFIC_BASE 1024
-#endif
-#define MFD_ALLOW_SEALING 0x0002U
-#define F_ADD_SEALS (F_LINUX_SPECIFIC_BASE + 9)
-#define F_GET_SEALS (F_LINUX_SPECIFIC_BASE + 10)
-
-#define F_SEAL_SEAL 0x0001 /* prevent further seals from being set */
-#define F_SEAL_SHRINK 0x0002 /* prevent file from shrinking */
-#define F_SEAL_GROW 0x0004 /* prevent file from growing */
-#define F_SEAL_WRITE 0x0008 /* prevent writes */
-
-static void *
-unix_physmem_alloc_aligned (vlib_main_t * vm, vlib_physmem_region_index_t idx,
- uword n_bytes, uword alignment)
-{
- vlib_physmem_region_t *pr = vlib_physmem_get_region (vm, idx);
- uword lo_offset, hi_offset;
- uword *to_free = 0;
-
- if (pr->heap == 0)
- return 0;
-
- /* IO memory is always at least cache aligned. */
- alignment = clib_max (alignment, CLIB_CACHE_LINE_BYTES);
-
- while (1)
- {
- mheap_get_aligned (pr->heap, n_bytes,
- /* align */ alignment,
- /* align offset */ 0,
- &lo_offset);
-
- /* Allocation failed? */
- if (lo_offset == ~0)
- break;
-
- if (pr->flags & VLIB_PHYSMEM_F_FAKE)
- break;
-
- /* Make sure allocation does not span DMA physical chunk boundary. */
- hi_offset = lo_offset + n_bytes - 1;
-
- if ((lo_offset >> pr->log2_page_size) ==
- (hi_offset >> pr->log2_page_size))
- break;
-
- /* Allocation would span chunk boundary, queue it to be freed as soon as
- we find suitable chunk. */
- vec_add1 (to_free, lo_offset);
- }
-
- if (to_free != 0)
- {
- uword i;
- for (i = 0; i < vec_len (to_free); i++)
- mheap_put (pr->heap, to_free[i]);
- vec_free (to_free);
- }
-
- return lo_offset != ~0 ? pr->heap + lo_offset : 0;
-}
-
-static void
-unix_physmem_free (vlib_main_t * vm, vlib_physmem_region_index_t idx, void *x)
-{
- vlib_physmem_region_t *pr = vlib_physmem_get_region (vm, idx);
- /* Return object to region's heap. */
- mheap_put (pr->heap, x - pr->heap);
-}
-
-static u64
-get_page_paddr (int fd, uword addr)
-{
- int pagesize = sysconf (_SC_PAGESIZE);
- u64 seek, pagemap = 0;
-
- seek = ((u64) addr / pagesize) * sizeof (u64);
- if (lseek (fd, seek, SEEK_SET) != seek)
- {
- clib_unix_warning ("lseek to 0x%llx", seek);
- return 0;
- }
- if (read (fd, &pagemap, sizeof (pagemap)) != (sizeof (pagemap)))
- {
- clib_unix_warning ("read ptbits");
- return 0;
- }
- if ((pagemap & (1ULL << 63)) == 0)
- return 0;
-
- pagemap &= pow2_mask (55);
-
- return pagemap * pagesize;
-}
-
-static clib_error_t *
-unix_physmem_region_alloc (vlib_main_t * vm, char *name, u32 size,
- u8 numa_node, u32 flags,
- vlib_physmem_region_index_t * idx)
-{
- vlib_physmem_main_t *vpm = &vm->physmem_main;
- vlib_physmem_region_t *pr;
- clib_error_t *error = 0;
- int pagemap_fd = -1;
- u8 *mount_dir = 0;
- u8 *filename = 0;
- struct stat st;
- int old_mpol;
- int mmap_flags;
- struct bitmask *old_mask = numa_allocate_nodemask ();
-
- if (geteuid () != 0 && (flags & VLIB_PHYSMEM_F_FAKE) == 0)
- return clib_error_return (0, "not allowed");
-
- pool_get (vpm->regions, pr);
-
- if ((pr - vpm->regions) >= 256)
- {
- error = clib_error_return (0, "maximum number of regions reached");
- goto error;
- }
-
- pr->index = pr - vpm->regions;
- pr->fd = -1;
- pr->flags = flags;
-
- if (get_mempolicy (&old_mpol, old_mask->maskp, old_mask->size + 1, NULL, 0)
- == -1)
- {
- error = clib_error_return_unix (0, "get_mempolicy");
- goto error;
- }
-
- if ((flags & VLIB_PHYSMEM_F_FAKE) == 0)
- {
- if ((pagemap_fd = open ((char *) "/proc/self/pagemap", O_RDONLY)) == -1)
- {
- error = clib_error_return_unix (0, "open '/proc/self/pagemap'");
- goto error;
- }
-
- mount_dir = format (0, "%s/physmem_region%d%c",
- vlib_unix_get_runtime_dir (), pr->index, 0);
- filename = format (0, "%s/mem%c", mount_dir, 0);
-
- unlink ((char *) mount_dir);
-
- error = vlib_unix_recursive_mkdir ((char *) mount_dir);
- if (error)
- goto error;
-
- if (mount ("none", (char *) mount_dir, "hugetlbfs", 0, NULL))
- {
- error = clib_error_return_unix (0, "mount hugetlb directory '%s'",
- mount_dir);
- goto error;
- }
-
- if ((pr->fd = open ((char *) filename, O_CREAT | O_RDWR, 0755)) == -1)
- {
- error = clib_error_return_unix (0, "open");
- goto error;
- }
-
- mmap_flags = MAP_SHARED | MAP_HUGETLB | MAP_LOCKED;
- }
- else
- {
- if ((pr->fd = memfd_create (name, MFD_ALLOW_SEALING)) == -1)
- return clib_error_return_unix (0, "memfd_create");
-
- if ((fcntl (pr->fd, F_ADD_SEALS, F_SEAL_SHRINK)) == -1)
- {
- error =
- clib_error_return_unix (0, "fcntl (F_ADD_SEALS, F_SEAL_SHRINK)");
- goto error;
- }
- mmap_flags = MAP_SHARED;
- }
-
- if (fstat (pr->fd, &st))
- {
- error = clib_error_return_unix (0, "fstat");
- goto error;
- }
-
- pr->log2_page_size = min_log2 (st.st_blksize);
- pr->n_pages = ((size - 1) >> pr->log2_page_size) + 1;
- size = pr->n_pages * (1 << pr->log2_page_size);
-
- if ((ftruncate (pr->fd, size)) == -1)
- {
- error = clib_error_return_unix (0, "ftruncate length: %d", size);
- goto error;
- }
-
- if ((flags & VLIB_PHYSMEM_F_FAKE) == 0)
- {
- error = vlib_sysfs_prealloc_hugepages (numa_node,
- 1 << (pr->log2_page_size - 10),
- pr->n_pages);
- if (error)
- goto error;
- }
-
- numa_set_preferred (numa_node);
-
- pr->mem = mmap (0, size, (PROT_READ | PROT_WRITE), mmap_flags, pr->fd, 0);
-
- if (pr->mem == MAP_FAILED)
- {
- pr->mem = 0;
- error = clib_error_return_unix (0, "mmap");
- goto error;
- }
-
- if (set_mempolicy (old_mpol, old_mask->maskp, old_mask->size + 1) == -1)
- {
- error = clib_error_return_unix (0, "set_mempolicy");
- goto error;
- }
-
- pr->size = pr->n_pages << pr->log2_page_size;
- pr->page_mask = (1 << pr->log2_page_size) - 1;
- pr->numa_node = numa_node;
- pr->name = format (0, "%s", name);
-
- if ((flags & VLIB_PHYSMEM_F_FAKE) == 0)
- {
- int i;
- for (i = 0; i < pr->n_pages; i++)
- {
- void *ptr = pr->mem + (i << pr->log2_page_size);
- int node;
- move_pages (0, 1, &ptr, 0, &node, 0);
- if (numa_node != node)
- {
- clib_warning
- ("physmem page for region \'%s\' allocated on the wrong"
- " numa node (requested %u actual %u)", pr->name,
- pr->numa_node, node, i);
- break;
- }
- }
- }
-
- if (flags & VLIB_PHYSMEM_F_INIT_MHEAP)
- {
- pr->heap = mheap_alloc_with_flags (pr->mem, pr->size,
- /* Don't want mheap mmap/munmap with IO memory. */
- MHEAP_FLAG_DISABLE_VM |
- MHEAP_FLAG_THREAD_SAFE);
- fformat (stdout, "%U", format_mheap, pr->heap, /* verbose */ 1);
- }
-
- if (flags & VLIB_PHYSMEM_F_HAVE_BUFFERS)
- {
- vlib_buffer_add_mem_range (vm, pointer_to_uword (pr->mem), pr->size);
- }
-
- *idx = pr->index;
-
- if ((flags & VLIB_PHYSMEM_F_FAKE) == 0)
- {
- int i;
- for (i = 0; i < pr->n_pages; i++)
- {
- uword vaddr =
- pointer_to_uword (pr->mem) + (((u64) i) << pr->log2_page_size);
- u64 page_paddr = get_page_paddr (pagemap_fd, vaddr);
- vec_add1 (pr->page_table, page_paddr);
- }
- }
-
- goto done;
-
-error:
- if (pr->fd > -1)
- close (pr->fd);
-
- if (pr->mem)
- munmap (pr->mem, size);
-
- memset (pr, 0, sizeof (*pr));
- pool_put (vpm->regions, pr);
-
-done:
- if (mount_dir)
- {
- umount2 ((char *) mount_dir, MNT_DETACH);
- rmdir ((char *) mount_dir);
- vec_free (mount_dir);
- }
- numa_free_cpumask (old_mask);
- vec_free (filename);
- if (pagemap_fd > -1)
- close (pagemap_fd);
- return error;
-}
-
-static void
-unix_physmem_region_free (vlib_main_t * vm, vlib_physmem_region_index_t idx)
-{
- vlib_physmem_main_t *vpm = &vm->physmem_main;
- vlib_physmem_region_t *pr = vlib_physmem_get_region (vm, idx);
-
- if (pr->fd > 0)
- close (pr->fd);
- munmap (pr->mem, pr->size);
- vec_free (pr->name);
- pool_put (vpm->regions, pr);
-}
-
-clib_error_t *
-unix_physmem_init (vlib_main_t * vm)
-{
- clib_error_t *error = 0;
-
- /* Avoid multiple calls. */
- if (vm->os_physmem_alloc_aligned)
- return error;
-
- vm->os_physmem_alloc_aligned = unix_physmem_alloc_aligned;
- vm->os_physmem_free = unix_physmem_free;
- vm->os_physmem_region_alloc = unix_physmem_region_alloc;
- vm->os_physmem_region_free = unix_physmem_region_free;
-
- return error;
-}
-
-static clib_error_t *
-show_physmem (vlib_main_t * vm,
- unformat_input_t * input, vlib_cli_command_t * cmd)
-{
- vlib_physmem_main_t *vpm = &vm->physmem_main;
- vlib_physmem_region_t *pr;
-
- /* *INDENT-OFF* */
- pool_foreach (pr, vpm->regions, (
- {
- vlib_cli_output (vm, "index %u name '%s' page-size %uKB num-pages %d "
- "numa-node %u fd %d\n",
- pr->index, pr->name, (1 << (pr->log2_page_size -10)),
- pr->n_pages, pr->numa_node, pr->fd);
- if (pr->heap)
- vlib_cli_output (vm, " %U", format_mheap, pr->heap, /* verbose */ 1);
- else
- vlib_cli_output (vm, " no heap\n");
- }));
- /* *INDENT-ON* */
- return 0;
-}
-
-/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (show_physmem_command, static) = {
- .path = "show physmem",
- .short_help = "Show physical memory allocation",
- .function = show_physmem,
-};
-/* *INDENT-ON* */
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */
diff --git a/src/vlib/unix/unix.h b/src/vlib/unix/unix.h
index b5a33427d36..1b0d8b9d384 100644
--- a/src/vlib/unix/unix.h
+++ b/src/vlib/unix/unix.h
@@ -217,23 +217,6 @@ extern u8 **vlib_thread_stacks;
/* utils */
-clib_error_t *vlib_sysfs_write (char *file_name, char *fmt, ...);
-
-clib_error_t *vlib_sysfs_read (char *file_name, char *fmt, ...);
-
-u8 *vlib_sysfs_link_to_name (char *link);
-
-clib_error_t *vlib_sysfs_set_nr_hugepages (unsigned int numa_node,
- int page_size, int nr);
-clib_error_t *vlib_sysfs_get_nr_hugepages (unsigned int numa_node,
- int page_size, int *v);
-clib_error_t *vlib_sysfs_get_free_hugepages (unsigned int numa_node,
- int page_size, int *v);
-clib_error_t *vlib_sysfs_get_surplus_hugepages (unsigned int numa_node,
- int page_size, int *v);
-clib_error_t *vlib_sysfs_prealloc_hugepages (unsigned int numa_node,
- int page_size, int nr);
-
clib_error_t *foreach_directory_file (char *dir_name,
clib_error_t * (*f) (void *arg,
u8 * path_name,
diff --git a/src/vlib/unix/util.c b/src/vlib/unix/util.c
index 0e252aca345..5472751e079 100644
--- a/src/vlib/unix/util.c
+++ b/src/vlib/unix/util.c
@@ -99,225 +99,6 @@ foreach_directory_file (char *dir_name,
}
clib_error_t *
-vlib_sysfs_write (char *file_name, char *fmt, ...)
-{
- u8 *s;
- int fd;
- clib_error_t *error = 0;
-
- fd = open (file_name, O_WRONLY);
- if (fd < 0)
- return clib_error_return_unix (0, "open `%s'", file_name);
-
- va_list va;
- va_start (va, fmt);
- s = va_format (0, fmt, &va);
- va_end (va);
-
- if (write (fd, s, vec_len (s)) < 0)
- error = clib_error_return_unix (0, "write `%s'", file_name);
-
- vec_free (s);
- close (fd);
- return error;
-}
-
-clib_error_t *
-vlib_sysfs_read (char *file_name, char *fmt, ...)
-{
- unformat_input_t input;
- u8 *s = 0;
- int fd;
- ssize_t sz;
- uword result;
-
- fd = open (file_name, O_RDONLY);
- if (fd < 0)
- return clib_error_return_unix (0, "open `%s'", file_name);
-
- vec_validate (s, 4095);
-
- sz = read (fd, s, vec_len (s));
- if (sz < 0)
- {
- close (fd);
- vec_free (s);
- return clib_error_return_unix (0, "read `%s'", file_name);
- }
-
- _vec_len (s) = sz;
- unformat_init_vector (&input, s);
-
- va_list va;
- va_start (va, fmt);
- result = va_unformat (&input, fmt, &va);
- va_end (va);
-
- vec_free (s);
- close (fd);
-
- if (result == 0)
- return clib_error_return (0, "unformat error");
-
- return 0;
-}
-
-u8 *
-vlib_sysfs_link_to_name (char *link)
-{
- char *p, buffer[64];
- unformat_input_t in;
- u8 *s = 0;
- int r;
-
- r = readlink (link, buffer, sizeof (buffer) - 1);
-
- if (r < 0)
- return 0;
-
- buffer[r] = 0;
- p = strrchr (buffer, '/');
-
- if (!p)
- return 0;
-
- unformat_init_string (&in, p + 1, strlen (p + 1));
- if (unformat (&in, "%s", &s) != 1)
- clib_unix_warning ("no string?");
- unformat_free (&in);
-
- return s;
-}
-
-clib_error_t *
-vlib_sysfs_set_nr_hugepages (unsigned int numa_node, int page_size, int nr)
-{
- clib_error_t *error = 0;
- struct stat sb;
- u8 *p = 0;
-
- p = format (p, "/sys/devices/system/node/node%u%c", numa_node, 0);
-
- if (stat ((char *) p, &sb) == 0)
- {
- if (S_ISDIR (sb.st_mode) == 0)
- {
- error = clib_error_return (0, "'%s' is not directory", p);
- goto done;
- }
- }
- else if (numa_node == 0)
- {
- vec_reset_length (p);
- p = format (p, "/sys/kernel/mm%c", 0);
- if (stat ((char *) p, &sb) < 0 || S_ISDIR (sb.st_mode) == 0)
- {
- error = clib_error_return (0, "'%s' does not exist or it is not "
- "directory", p);
- goto done;
- }
- }
- else
- {
- error = clib_error_return (0, "'%s' does not exist", p);
- goto done;
- }
-
- _vec_len (p) -= 1;
- p = format (p, "/hugepages/hugepages-%ukB/nr_hugepages%c", page_size, 0);
- vlib_sysfs_write ((char *) p, "%d", nr);
-
-done:
- vec_free (p);
- return error;
-}
-
-
-static clib_error_t *
-vlib_sysfs_get_xxx_hugepages (char *type, unsigned int numa_node,
- int page_size, int *val)
-{
- clib_error_t *error = 0;
- struct stat sb;
- u8 *p = 0;
-
- p = format (p, "/sys/devices/system/node/node%u%c", numa_node, 0);
-
- if (stat ((char *) p, &sb) == 0)
- {
- if (S_ISDIR (sb.st_mode) == 0)
- {
- error = clib_error_return (0, "'%s' is not directory", p);
- goto done;
- }
- }
- else if (numa_node == 0)
- {
- vec_reset_length (p);
- p = format (p, "/sys/kernel/mm%c", 0);
- if (stat ((char *) p, &sb) < 0 || S_ISDIR (sb.st_mode) == 0)
- {
- error = clib_error_return (0, "'%s' does not exist or it is not "
- "directory", p);
- goto done;
- }
- }
- else
- {
- error = clib_error_return (0, "'%s' does not exist", p);
- goto done;
- }
-
- _vec_len (p) -= 1;
- p = format (p, "/hugepages/hugepages-%ukB/%s_hugepages%c", page_size,
- type, 0);
- error = vlib_sysfs_read ((char *) p, "%d", val);
-
-done:
- vec_free (p);
- return error;
-}
-
-clib_error_t *
-vlib_sysfs_get_free_hugepages (unsigned int numa_node, int page_size, int *v)
-{
- return vlib_sysfs_get_xxx_hugepages ("free", numa_node, page_size, v);
-}
-
-clib_error_t *
-vlib_sysfs_get_nr_hugepages (unsigned int numa_node, int page_size, int *v)
-{
- return vlib_sysfs_get_xxx_hugepages ("nr", numa_node, page_size, v);
-}
-
-clib_error_t *
-vlib_sysfs_get_surplus_hugepages (unsigned int numa_node, int page_size,
- int *v)
-{
- return vlib_sysfs_get_xxx_hugepages ("surplus", numa_node, page_size, v);
-}
-
-clib_error_t *
-vlib_sysfs_prealloc_hugepages (unsigned int numa_node, int page_size, int nr)
-{
- clib_error_t *error = 0;
- int n, needed;
- error = vlib_sysfs_get_free_hugepages (numa_node, page_size, &n);
- if (error)
- return error;
- needed = nr - n;
- if (needed <= 0)
- return 0;
-
- error = vlib_sysfs_get_nr_hugepages (numa_node, page_size, &n);
- if (error)
- return error;
- clib_warning ("pre-allocating %u additional %uK hugepages on numa node %u",
- needed, page_size, numa_node);
- return vlib_sysfs_set_nr_hugepages (numa_node, page_size, n + needed);
-}
-
-clib_error_t *
vlib_unix_recursive_mkdir (char *path)
{
clib_error_t *error = 0;