diff options
Diffstat (limited to 'src/svm/memfd.h')
| -rw-r--r-- | src/svm/memfd.h | 194 |
1 files changed, 0 insertions, 194 deletions
diff --git a/src/svm/memfd.h b/src/svm/memfd.h deleted file mode 100644 index 3ed4a9ab067..00000000000 --- a/src/svm/memfd.h +++ /dev/null @@ -1,194 +0,0 @@ -/* - * Copyright (c) 2017 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. - */ -#ifndef __included_memfd_h__ -#define __included_memfd_h__ - -#include <stdio.h> -#include <stdlib.h> -#include <sys/types.h> -#include <sys/mman.h> -#include <sys/stat.h> -#include <netinet/in.h> -#include <signal.h> -#include <pthread.h> -#include <unistd.h> -#include <time.h> -#include <fcntl.h> -#include <string.h> -#include <vppinfra/clib.h> -#include <vppinfra/vec.h> -#include <vppinfra/hash.h> -#include <vppinfra/bitmap.h> -#include <vppinfra/fifo.h> -#include <vppinfra/time.h> -#include <vppinfra/mheap.h> -#include <vppinfra/heap.h> -#include <vppinfra/pool.h> -#include <vppinfra/format.h> -/* DGMS, memfd syscall not in glibc... */ -#include <vppinfra/linux/syscall.h> - -#ifndef MMAP_PAGESIZE -#define MMAP_PAGESIZE (clib_mem_get_page_size()) -#endif - -#define MEMFD_N_OPAQUE 7 - -typedef struct -{ - /* Spin-lock */ - volatile u32 lock; - volatile u32 owner_pid; - int recursion_count; - u32 tag; /* for debugging */ - - /* The allocation arena */ - void *heap; - - /* Segment must be mapped at this address, or no supper */ - u64 memfd_va; - /* The actual mmap size */ - u64 memfd_size; - u32 master_pid; - u32 slave_pid; - u8 *name; - void *opaque[MEMFD_N_OPAQUE]; - - /* Set when the master application thinks it's time to make the donuts */ - volatile u32 ready; - - /* Needed to make unique MAC addresses, etc. */ - u32 master_index; -} memfd_shared_header_t; - -typedef struct -{ - memfd_shared_header_t *sh; - int fd; - u64 memfd_size; - u32 my_pid; - u32 vlib_hw_if_index; - uword requested_va; - int i_am_master; - u32 per_interface_next_index; - u32 *rx_queue; - u8 *name; -} memfd_private_t; - -always_inline void -memfd_lock (memfd_shared_header_t * h, u32 my_pid, u32 tag) -{ - if (h->owner_pid == my_pid) - { - h->recursion_count++; - return; - } - - while (__sync_lock_test_and_set (&h->lock, 1)) - ; - - h->owner_pid = my_pid; - h->recursion_count = 1; - h->tag = tag; -} - -always_inline void -memfd_lock_non_recursive (memfd_shared_header_t * h, u32 tag) -{ - while (__sync_lock_test_and_set (&h->lock, 1)) - ; - - h->tag = tag; -} - -always_inline void -memfd_unlock (memfd_shared_header_t * h) -{ - if (--h->recursion_count == 0) - { - h->owner_pid = 0; - h->tag = 0; - CLIB_MEMORY_BARRIER (); - h->lock = 0; - } -} - -always_inline void -memfd_unlock_non_recursive (memfd_shared_header_t * h) -{ - h->tag = 0; - CLIB_MEMORY_BARRIER (); - h->lock = 0; -} - -static inline void * -memfd_push_heap (memfd_shared_header_t * sh) -{ - u8 *oldheap; - oldheap = clib_mem_set_heap (sh->heap); - return ((void *) oldheap); -} - -static inline void -memfd_pop_heap (void *oldheap) -{ - clib_mem_set_heap (oldheap); -} - -#define foreach_memfd_api_error \ -_(NO_NAME, "No shared segment name", -100) \ -_(NO_SIZE, "Size not set (master)", -101) \ -_(CREATE_FAILURE, "Create failed", -102) \ -_(SET_SIZE, "Set size failed", -103) \ -_(MMAP, "mmap failed", -104) \ -_(SLAVE_TIMEOUT, "Slave map timeout", -105) - -typedef enum -{ -#define _(n,s,c) MEMFD_API_ERROR_##n = c, - foreach_memfd_api_error -#undef _ -} memfd_api_error_enum_t; - -#define MEMFD_API_ERROR_NO_NAME (-10) - -int memfd_master_init (memfd_private_t * memfd, u32 master_index); -int memfd_slave_init (memfd_private_t * memfd); -void memfd_delete (memfd_private_t * memfd); - -/* These do not belong here, but the original keeps running around... */ -/* $$$$ work w/ Damjan to fix properly */ - -#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 */ - -#endif /* __included_memfd_h__ */ - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |