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authorFlorin Coras <fcoras@cisco.com>2018-01-14 12:25:50 -0800
committerDamjan Marion <dmarion.lists@gmail.com>2018-01-15 16:39:12 +0000
commit4d9b9d8e74f12a26404ccdd8baf46c61b44584db (patch)
tree2c9e0314664fca52722431f14928e1b3fd0017fb /src/svm/memfd.c
parent149a1433b0e6301a34989f5e8c7ebed3fa5bf74e (diff)
svm: refactor memfd and remove ssvm_eth
Change-Id: Icde296e956eb89ea3a17d547f04a833916ec6440 Signed-off-by: Florin Coras <fcoras@cisco.com>
Diffstat (limited to 'src/svm/memfd.c')
-rw-r--r--src/svm/memfd.c137
1 files changed, 0 insertions, 137 deletions
diff --git a/src/svm/memfd.c b/src/svm/memfd.c
deleted file mode 100644
index 9fe487db788..00000000000
--- a/src/svm/memfd.c
+++ /dev/null
@@ -1,137 +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.
- */
-#include "memfd.h"
-
-int
-memfd_master_init (memfd_private_t * memfd, u32 master_index)
-{
- int flags;
- memfd_shared_header_t *sh;
- u64 ticks = clib_cpu_time_now ();
- u64 randomize_baseva;
- void *oldheap;
-
- if (memfd->memfd_size == 0)
- return MEMFD_API_ERROR_NO_SIZE;
-
- ASSERT (vec_c_string_is_terminated (memfd->name));
- memfd->name = format (0, "memfd svm region %d", master_index);
-
- memfd->fd = memfd_create ((char *) memfd->name, MFD_ALLOW_SEALING);
- if (memfd->fd < 0)
- {
- clib_unix_warning ("create segment '%s'", memfd->name);
- return MEMFD_API_ERROR_CREATE_FAILURE;
- }
-
- if ((ftruncate (memfd->fd, memfd->memfd_size)) == -1)
- {
- clib_unix_warning ("set memfd size");
- return MEMFD_API_ERROR_SET_SIZE;
- }
-
- if ((fcntl (memfd->fd, F_ADD_SEALS, F_SEAL_SHRINK)) == -1)
- clib_unix_warning ("fcntl (F_ADD_SEALS, F_SEAL_SHRINK)");
-
- flags = MAP_SHARED;
- if (memfd->requested_va)
- flags |= MAP_FIXED;
-
- randomize_baseva = (ticks & 15) * MMAP_PAGESIZE;
-
- if (memfd->requested_va)
- memfd->requested_va += randomize_baseva;
-
- sh = memfd->sh =
- (memfd_shared_header_t *) mmap ((void *) memfd->requested_va,
- memfd->memfd_size, PROT_READ | PROT_WRITE,
- flags, memfd->fd, 0);
-
- if (memfd->sh == MAP_FAILED)
- {
- clib_unix_warning ("mmap");
- close (memfd->fd);
- return MEMFD_API_ERROR_MMAP;
- }
-
- memfd->my_pid = getpid ();
- sh->master_pid = memfd->my_pid;
- sh->memfd_size = memfd->memfd_size;
- sh->heap = mheap_alloc_with_flags
- (((u8 *) sh) + MMAP_PAGESIZE, memfd->memfd_size - MMAP_PAGESIZE,
- MHEAP_FLAG_DISABLE_VM | MHEAP_FLAG_THREAD_SAFE);
-
- sh->memfd_va = pointer_to_uword (sh);
- sh->master_index = master_index;
-
- oldheap = memfd_push_heap (sh);
- sh->name = format (0, "%s%c", memfd->name, 0);
- memfd_pop_heap (oldheap);
-
- memfd->i_am_master = 1;
-
- /* The application has to set set sh->ready... */
- return 0;
-}
-
-/*
- * Subtly different than svm_slave_init. The caller
- * needs to acquire a usable file descriptor for the memfd segment
- * e.g. via vppinfra/socket.c:default_socket_recvmsg
- */
-
-int
-memfd_slave_init (memfd_private_t * memfd)
-{
- memfd_shared_header_t *sh;
-
- memfd->i_am_master = 0;
-
- /* Map the segment once, to look at the shared header */
- sh = (void *) mmap (0, MMAP_PAGESIZE, PROT_READ | PROT_WRITE, MAP_SHARED,
- memfd->fd, 0);
- if (sh == MAP_FAILED)
- {
- clib_unix_warning ("slave research mmap");
- close (memfd->fd);
- return MEMFD_API_ERROR_MMAP;
- }
-
- memfd->requested_va = (u64) sh->memfd_va;
- memfd->memfd_size = sh->memfd_size;
- munmap (sh, MMAP_PAGESIZE);
-
- sh = memfd->sh =
- (void *) mmap ((void *) memfd->requested_va, memfd->memfd_size,
- PROT_READ | PROT_WRITE,
- MAP_SHARED | MAP_FIXED, memfd->fd, 0);
-
- if (sh == MAP_FAILED)
- {
- clib_unix_warning ("slave final mmap");
- close (memfd->fd);
- return MEMFD_API_ERROR_MMAP;
- }
- sh->slave_pid = getpid ();
- return 0;
-}
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */