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-rw-r--r--src/vppinfra/CMakeLists.txt5
-rw-r--r--src/vppinfra/freebsd/mem.c471
2 files changed, 476 insertions, 0 deletions
diff --git a/src/vppinfra/CMakeLists.txt b/src/vppinfra/CMakeLists.txt
index 86b1c884269..f34ceed9d15 100644
--- a/src/vppinfra/CMakeLists.txt
+++ b/src/vppinfra/CMakeLists.txt
@@ -222,6 +222,11 @@ if("${CMAKE_SYSTEM_NAME}" STREQUAL "Linux")
perfmon/bundle_core_power.c
perfmon/perfmon.c
)
+elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "FreeBSD")
+ list(APPEND VPPINFRA_SRCS
+ elf_clib.c
+ freebsd/mem.c
+ )
endif()
option(VPP_USE_EXTERNAL_LIBEXECINFO "Use external libexecinfo (useful for non-glibc targets)." OFF)
diff --git a/src/vppinfra/freebsd/mem.c b/src/vppinfra/freebsd/mem.c
new file mode 100644
index 00000000000..7d27a0dc169
--- /dev/null
+++ b/src/vppinfra/freebsd/mem.c
@@ -0,0 +1,471 @@
+/* SPDX-License-Identifier: Apache-2.0
+ * Copyright(c) 2021 Cisco Systems, Inc.
+ * Copyright(c) 2024 Tom Jones <thj@freebsd.org>
+ */
+
+#define _GNU_SOURCE
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <sys/memrange.h>
+#include <sys/mount.h>
+#include <sys/mman.h>
+#include <fcntl.h>
+#include <vppinfra/clib.h>
+#include <vppinfra/mem.h>
+#include <vppinfra/lock.h>
+#include <vppinfra/time.h>
+#include <vppinfra/bitmap.h>
+#include <vppinfra/format.h>
+#include <vppinfra/clib_error.h>
+
+#ifndef F_FBSD_SPECIFIC_BASE
+#define F_FBSD_SPECIFIC_BASE 1024
+#endif
+
+#ifndef F_ADD_SEALS
+#define F_ADD_SEALS (F_FBSD_SPECIFIC_BASE + 9)
+#define F_GET_SEALS (F_FBSD_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 */
+#endif
+
+#ifndef MFD_HUGETLB
+#define MFD_HUGETLB 0x0004U
+#endif
+
+#ifndef MAP_HUGE_SHIFT
+#define MAP_HUGE_SHIFT 26
+#endif
+
+#ifndef MFD_HUGE_SHIFT
+#define MFD_HUGE_SHIFT 26
+#endif
+
+#ifndef MAP_FIXED_NOREPLACE
+#define MAP_FIXED_NOREPLACE MAP_FIXED
+#endif
+
+static void
+map_lock ()
+{
+ while (clib_atomic_test_and_set (&clib_mem_main.map_lock))
+ CLIB_PAUSE ();
+}
+
+static void
+map_unlock ()
+{
+ clib_atomic_release (&clib_mem_main.map_lock);
+}
+
+void
+clib_mem_main_init (void)
+{
+ clib_mem_main_t *mm = &clib_mem_main;
+ long sysconf_page_size;
+ uword page_size;
+ void *va;
+
+ if (mm->log2_page_sz != CLIB_MEM_PAGE_SZ_UNKNOWN)
+ return;
+
+ /* system page size */
+ sysconf_page_size = sysconf (_SC_PAGESIZE);
+ if (sysconf_page_size < 0)
+ {
+ clib_panic ("Could not determine the page size");
+ }
+ page_size = sysconf_page_size;
+ mm->log2_page_sz = min_log2 (page_size);
+
+ mm->log2_default_hugepage_sz = min_log2 (page_size);
+ mm->log2_sys_default_hugepage_sz = mm->log2_default_hugepage_sz;
+
+ /* numa nodes */
+ va = mmap (0, page_size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS,
+ -1, 0);
+ if (va == MAP_FAILED)
+ return;
+
+ if (mlock (va, page_size))
+ goto done;
+
+ /*
+ * TODO: In linux/mem.c we can move pages to numa domains, this isn't an
+ * option in FreeBSD yet.
+ */
+
+done:
+ munmap (va, page_size);
+}
+
+__clib_export u64
+clib_mem_get_fd_page_size (int fd)
+{
+ struct stat st = { 0 };
+ if (fstat (fd, &st) == -1)
+ return 0;
+ return st.st_blksize;
+}
+
+__clib_export clib_mem_page_sz_t
+clib_mem_get_fd_log2_page_size (int fd)
+{
+ uword page_size = clib_mem_get_fd_page_size (fd);
+ return page_size ? min_log2 (page_size) : CLIB_MEM_PAGE_SZ_UNKNOWN;
+}
+
+__clib_export void
+clib_mem_vm_randomize_va (uword *requested_va,
+ clib_mem_page_sz_t log2_page_size)
+{
+ /* TODO: Not yet implemented */
+}
+
+__clib_export int
+clib_mem_vm_create_fd (clib_mem_page_sz_t log2_page_size, char *fmt, ...)
+{
+ clib_mem_main_t *mm = &clib_mem_main;
+ int fd;
+ unsigned int memfd_flags;
+ va_list va;
+ u8 *s = 0;
+
+ if (log2_page_size == mm->log2_page_sz)
+ log2_page_size = CLIB_MEM_PAGE_SZ_DEFAULT;
+ else if (log2_page_size == mm->log2_sys_default_hugepage_sz)
+ log2_page_size = CLIB_MEM_PAGE_SZ_DEFAULT_HUGE;
+
+ switch (log2_page_size)
+ {
+ case CLIB_MEM_PAGE_SZ_UNKNOWN:
+ return CLIB_MEM_ERROR;
+ case CLIB_MEM_PAGE_SZ_DEFAULT:
+ memfd_flags = MFD_ALLOW_SEALING;
+ break;
+ case CLIB_MEM_PAGE_SZ_DEFAULT_HUGE:
+ memfd_flags = MFD_HUGETLB;
+ break;
+ default:
+ memfd_flags = MFD_HUGETLB | log2_page_size << MFD_HUGE_SHIFT;
+ }
+
+ va_start (va, fmt);
+ s = va_format (0, fmt, &va);
+ va_end (va);
+
+ /* memfd_create maximum string size is 249 chars without trailing zero */
+ if (vec_len (s) > 249)
+ vec_set_len (s, 249);
+ vec_add1 (s, 0);
+
+ fd = memfd_create ((char *) s, memfd_flags);
+ if (fd == -1)
+ {
+ vec_reset_length (mm->error);
+ mm->error = clib_error_return_unix (mm->error, "memfd_create");
+ vec_free (s);
+ return CLIB_MEM_ERROR;
+ }
+
+ vec_free (s);
+
+ if ((memfd_flags & MFD_ALLOW_SEALING) &&
+ ((fcntl (fd, F_ADD_SEALS, F_SEAL_SHRINK)) == -1))
+ {
+ vec_reset_length (mm->error);
+ mm->error = clib_error_return_unix (mm->error, "fcntl (F_ADD_SEALS)");
+ close (fd);
+ return CLIB_MEM_ERROR;
+ }
+
+ return fd;
+}
+
+uword
+clib_mem_vm_reserve (uword start, uword size, clib_mem_page_sz_t log2_page_sz)
+{
+ clib_mem_main_t *mm = &clib_mem_main;
+ uword pagesize = 1ULL << log2_page_sz;
+ uword sys_page_sz = 1ULL << mm->log2_page_sz;
+ uword n_bytes;
+ void *base = 0, *p;
+
+ size = round_pow2 (size, pagesize);
+
+ /* in adition of requested reservation, we also rserve one system page
+ * (typically 4K) adjacent to the start off reservation */
+
+ if (start)
+ {
+ /* start address is provided, so we just need to make sure we are not
+ * replacing existing map */
+ if (start & pow2_mask (log2_page_sz))
+ return ~0;
+ base = (void *) start - sys_page_sz;
+ base = mmap (base, size + sys_page_sz, PROT_NONE,
+ MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED_NOREPLACE, -1, 0);
+
+ return (base == MAP_FAILED) ? ~0 : start;
+ }
+
+ /* to make sure that we get reservation aligned to page_size we need to
+ * request one additional page as mmap will return us address which is
+ * aligned only to system page size */
+ base =
+ mmap (0, size + pagesize, PROT_NONE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+
+ if (base == MAP_FAILED)
+ return ~0;
+
+ /* return additional space at the end of allocation */
+ p = base + size + pagesize;
+ n_bytes = (uword) p & pow2_mask (log2_page_sz);
+ if (n_bytes)
+ {
+ p -= n_bytes;
+ munmap (p, n_bytes);
+ }
+
+ /* return additional space at the start of allocation */
+ n_bytes = pagesize - sys_page_sz - n_bytes;
+ if (n_bytes)
+ {
+ munmap (base, n_bytes);
+ base += n_bytes;
+ }
+
+ return (uword) base + sys_page_sz;
+}
+
+__clib_export clib_mem_vm_map_hdr_t *
+clib_mem_vm_get_next_map_hdr (clib_mem_vm_map_hdr_t *hdr)
+{
+ /* TODO: Not yet implemented */
+ return NULL;
+}
+
+void *
+clib_mem_vm_map_internal (void *base, clib_mem_page_sz_t log2_page_sz,
+ uword size, int fd, uword offset, char *name)
+{
+ clib_mem_main_t *mm = &clib_mem_main;
+ clib_mem_vm_map_hdr_t *hdr;
+ uword sys_page_sz = 1ULL << mm->log2_page_sz;
+ int mmap_flags = MAP_FIXED, is_huge = 0;
+
+ if (fd != -1)
+ {
+ mmap_flags |= MAP_SHARED;
+ log2_page_sz = clib_mem_get_fd_log2_page_size (fd);
+ if (log2_page_sz > mm->log2_page_sz)
+ is_huge = 1;
+ }
+ else
+ {
+ mmap_flags |= MAP_PRIVATE | MAP_ANONYMOUS;
+
+ if (log2_page_sz == mm->log2_page_sz)
+ log2_page_sz = CLIB_MEM_PAGE_SZ_DEFAULT;
+
+ switch (log2_page_sz)
+ {
+ case CLIB_MEM_PAGE_SZ_UNKNOWN:
+ /* will fail later */
+ break;
+ case CLIB_MEM_PAGE_SZ_DEFAULT:
+ log2_page_sz = mm->log2_page_sz;
+ break;
+ case CLIB_MEM_PAGE_SZ_DEFAULT_HUGE:
+ /* We shouldn't be selecting HUGETLB on FreeBSD */
+ log2_page_sz = CLIB_MEM_PAGE_SZ_UNKNOWN;
+ break;
+ default:
+ log2_page_sz = mm->log2_page_sz;
+ break;
+ }
+ }
+
+ size = round_pow2 (size, 1ULL << log2_page_sz);
+
+ base = (void *) clib_mem_vm_reserve ((uword) base, size, log2_page_sz);
+
+ if (base == (void *) ~0)
+ return CLIB_MEM_VM_MAP_FAILED;
+
+ base = mmap (base, size, PROT_READ | PROT_WRITE, mmap_flags, fd, offset);
+
+ if (base == MAP_FAILED)
+ return CLIB_MEM_VM_MAP_FAILED;
+
+ if (is_huge && (mlock (base, size) != 0))
+ {
+ munmap (base, size);
+ return CLIB_MEM_VM_MAP_FAILED;
+ }
+
+ hdr = mmap (base - sys_page_sz, sys_page_sz, PROT_READ | PROT_WRITE,
+ MAP_ANONYMOUS | MAP_PRIVATE | MAP_FIXED, -1, 0);
+
+ if (hdr != base - sys_page_sz)
+ {
+ munmap (base, size);
+ return CLIB_MEM_VM_MAP_FAILED;
+ }
+
+ map_lock ();
+
+ if (mm->last_map)
+ {
+ mprotect (mm->last_map, sys_page_sz, PROT_READ | PROT_WRITE);
+ mm->last_map->next = hdr;
+ mprotect (mm->last_map, sys_page_sz, PROT_NONE);
+ }
+ else
+ mm->first_map = hdr;
+
+ clib_mem_unpoison (hdr, sys_page_sz);
+ hdr->next = 0;
+ hdr->prev = mm->last_map;
+ snprintf (hdr->name, CLIB_VM_MAP_HDR_NAME_MAX_LEN - 1, "%s", (char *) name);
+ mm->last_map = hdr;
+
+ hdr->base_addr = (uword) base;
+ hdr->log2_page_sz = log2_page_sz;
+ hdr->num_pages = size >> log2_page_sz;
+ hdr->fd = fd;
+ hdr->name[CLIB_VM_MAP_HDR_NAME_MAX_LEN - 1] = 0;
+ mprotect (hdr, sys_page_sz, PROT_NONE);
+
+ map_unlock ();
+
+ clib_mem_unpoison (base, size);
+ return base;
+}
+
+__clib_export int
+clib_mem_vm_unmap (void *base)
+{
+ clib_mem_main_t *mm = &clib_mem_main;
+ uword size, sys_page_sz = 1ULL << mm->log2_page_sz;
+ clib_mem_vm_map_hdr_t *hdr = base - sys_page_sz;
+ ;
+
+ map_lock ();
+ if (mprotect (hdr, sys_page_sz, PROT_READ | PROT_WRITE) != 0)
+ goto out;
+
+ size = hdr->num_pages << hdr->log2_page_sz;
+ if (munmap ((void *) hdr->base_addr, size) != 0)
+ goto out;
+
+ if (hdr->next)
+ {
+ mprotect (hdr->next, sys_page_sz, PROT_READ | PROT_WRITE);
+ hdr->next->prev = hdr->prev;
+ mprotect (hdr->next, sys_page_sz, PROT_NONE);
+ }
+ else
+ mm->last_map = hdr->prev;
+
+ if (hdr->prev)
+ {
+ mprotect (hdr->prev, sys_page_sz, PROT_READ | PROT_WRITE);
+ hdr->prev->next = hdr->next;
+ mprotect (hdr->prev, sys_page_sz, PROT_NONE);
+ }
+ else
+ mm->first_map = hdr->next;
+
+ map_unlock ();
+
+ if (munmap (hdr, sys_page_sz) != 0)
+ return CLIB_MEM_ERROR;
+
+ return 0;
+out:
+ map_unlock ();
+ return CLIB_MEM_ERROR;
+}
+
+__clib_export void
+clib_mem_get_page_stats (void *start, clib_mem_page_sz_t log2_page_size,
+ uword n_pages, clib_mem_page_stats_t *stats)
+{
+ int i, *status = 0;
+ void **ptr = 0;
+
+ log2_page_size = clib_mem_log2_page_size_validate (log2_page_size);
+
+ vec_validate (status, n_pages - 1);
+ vec_validate (ptr, n_pages - 1);
+
+ for (i = 0; i < n_pages; i++)
+ ptr[i] = start + (i << log2_page_size);
+
+ clib_memset (stats, 0, sizeof (clib_mem_page_stats_t));
+ stats->total = n_pages;
+ stats->log2_page_sz = log2_page_size;
+
+ /*
+ * TODO: Until FreeBSD has support for tracking pages in NUMA domains just
+ * return that all are unknown for the statsistics.
+ */
+ stats->unknown = n_pages;
+
+ vec_free (status);
+ vec_free (ptr);
+}
+
+__clib_export u64 *
+clib_mem_vm_get_paddr (void *mem, clib_mem_page_sz_t log2_page_size,
+ int n_pages)
+{
+ struct mem_extract meme;
+ int pagesize = sysconf (_SC_PAGESIZE);
+ int fd;
+ int i;
+ u64 *r = 0;
+
+ log2_page_size = clib_mem_log2_page_size_validate (log2_page_size);
+
+ if ((fd = open ((char *) "/dev/mem", O_RDONLY)) == -1)
+ return 0;
+
+ for (i = 0; i < n_pages; i++)
+ {
+ meme.me_vaddr = pointer_to_uword (mem) + (((u64) i) << log2_page_size);
+
+ if (ioctl (fd, MEM_EXTRACT_PADDR, &meme) == -1)
+ goto done;
+ vec_add1 (r, meme.me_paddr * pagesize);
+ }
+
+done:
+ close (fd);
+ if (vec_len (r) != n_pages)
+ {
+ vec_free (r);
+ return 0;
+ }
+ return r;
+}
+
+__clib_export int
+clib_mem_set_numa_affinity (u8 numa_node, int force)
+{
+ /* TODO: Not yet implemented */
+ return CLIB_MEM_ERROR;
+}
+
+__clib_export int
+clib_mem_set_default_numa_affinity ()
+{
+ /* TODO: Not yet implemented */
+ return 0;
+}