typedef int (*init_fn) (ssvm_private_t *);
typedef void (*delete_fn) (ssvm_private_t *);
-static init_fn master_init_fns[SSVM_N_SEGMENT_TYPES] =
- { ssvm_master_init_shm, ssvm_master_init_memfd, ssvm_master_init_private };
-static init_fn slave_init_fns[SSVM_N_SEGMENT_TYPES] =
- { ssvm_slave_init_shm, ssvm_slave_init_memfd, ssvm_slave_init_private };
+static init_fn server_init_fns[SSVM_N_SEGMENT_TYPES] =
+ { ssvm_server_init_shm, ssvm_server_init_memfd, ssvm_server_init_private };
+static init_fn client_init_fns[SSVM_N_SEGMENT_TYPES] =
+ { ssvm_client_init_shm, ssvm_client_init_memfd, ssvm_client_init_private };
static delete_fn delete_fns[SSVM_N_SEGMENT_TYPES] =
{ ssvm_delete_shm, ssvm_delete_memfd, ssvm_delete_private };
int
-ssvm_master_init_shm (ssvm_private_t * ssvm)
+ssvm_server_init_shm (ssvm_private_t * ssvm)
{
int ssvm_fd;
u8 junk = 0, *ssvm_filename;
close (ssvm_fd);
CLIB_MEM_UNPOISON (sh, sizeof (*sh));
- sh->master_pid = ssvm->my_pid;
+ sh->server_pid = ssvm->my_pid;
sh->ssvm_size = ssvm->ssvm_size;
sh->ssvm_va = pointer_to_uword (sh);
sh->type = SSVM_SEGMENT_SHM;
sh->heap = clib_mem_create_heap (((u8 *) sh) + page_size,
ssvm->ssvm_size - page_size,
- 1 /* locked */ , "ssvm master shm");
+ 1 /* locked */ , "ssvm server shm");
oldheap = ssvm_push_heap (sh);
sh->name = format (0, "%s", ssvm->name, 0);
ssvm->sh = sh;
ssvm->my_pid = getpid ();
- ssvm->i_am_master = 1;
+ ssvm->is_server = 1;
/* The application has to set set sh->ready... */
return 0;
}
int
-ssvm_slave_init_shm (ssvm_private_t * ssvm)
+ssvm_client_init_shm (ssvm_private_t * ssvm)
{
struct stat stat;
int ssvm_fd = -1;
ssvm_shared_header_t *sh;
ASSERT (vec_c_string_is_terminated (ssvm->name));
- ssvm->i_am_master = 0;
+ ssvm->is_server = 0;
while (ssvm->attach_timeout-- > 0)
{
if (stat.st_size > 0)
goto map_it;
}
- clib_warning ("slave timeout");
- return SSVM_API_ERROR_SLAVE_TIMEOUT;
+ clib_warning ("client timeout");
+ return SSVM_API_ERROR_CLIENT_TIMEOUT;
map_it:
sh = (void *) mmap (0, MMAP_PAGESIZE, PROT_READ | PROT_WRITE, MAP_SHARED,
ssvm_fd, 0);
if (sh == MAP_FAILED)
{
- clib_unix_warning ("slave research mmap");
+ clib_unix_warning ("client research mmap");
close (ssvm_fd);
return SSVM_API_ERROR_MMAP;
}
}
close (ssvm_fd);
munmap (sh, MMAP_PAGESIZE);
- clib_warning ("slave timeout 2");
- return SSVM_API_ERROR_SLAVE_TIMEOUT;
+ clib_warning ("client timeout 2");
+ return SSVM_API_ERROR_CLIENT_TIMEOUT;
re_map_it:
ssvm->requested_va = sh->ssvm_va;
if (sh == MAP_FAILED)
{
- clib_unix_warning ("slave final mmap");
+ clib_unix_warning ("client final mmap");
close (ssvm_fd);
return SSVM_API_ERROR_MMAP;
}
- sh->slave_pid = getpid ();
+ sh->client_pid = getpid ();
return 0;
}
vec_free (fn);
vec_free (ssvm->name);
- if (ssvm->i_am_master)
+ if (ssvm->is_server)
clib_mem_vm_unmap (ssvm->sh);
else
munmap ((void *) ssvm->sh, ssvm->ssvm_size);
}
/**
- * Initialize memfd segment master
+ * Initialize memfd segment server
*/
int
-ssvm_master_init_memfd (ssvm_private_t * memfd)
+ssvm_server_init_memfd (ssvm_private_t * memfd)
{
int log2_page_size, n_pages;
uword page_size;
if (memfd->fd == CLIB_MEM_ERROR)
{
- clib_unix_warning (0, "failed to create memfd");
+ clib_unix_warning ("failed to create memfd");
return SSVM_API_ERROR_CREATE_FAILURE;
}
log2_page_size = clib_mem_get_fd_log2_page_size (memfd->fd);
if (log2_page_size == 0)
{
- clib_unix_warning (0, "cannot determine page size");
+ clib_unix_warning ("cannot determine page size");
return SSVM_API_ERROR_CREATE_FAILURE;
}
if ((ftruncate (memfd->fd, n_pages << log2_page_size)) == -1)
{
- clib_unix_warning (0, "memfd ftruncate failure");
+ clib_unix_warning ("memfd ftruncate failure");
return SSVM_API_ERROR_CREATE_FAILURE;
}
memfd->sh = sh;
memfd->my_pid = getpid ();
- memfd->i_am_master = 1;
+ memfd->is_server = 1;
- sh->master_pid = memfd->my_pid;
+ sh->server_pid = memfd->my_pid;
sh->ssvm_size = memfd->ssvm_size;
sh->ssvm_va = pointer_to_uword (sh);
sh->type = SSVM_SEGMENT_MEMFD;
- page_size = 1 << log2_page_size;
+ page_size = 1ULL << log2_page_size;
sh->heap = clib_mem_create_heap (((u8 *) sh) + page_size,
memfd->ssvm_size - page_size,
- 1 /* locked */ , "ssvm master memfd");
+ 1 /* locked */ , "ssvm server memfd");
oldheap = ssvm_push_heap (sh);
sh->name = format (0, "%s", memfd->name, 0);
ssvm_pop_heap (oldheap);
}
/**
- * Initialize memfd segment slave
+ * Initialize memfd segment client
*
- * Subtly different than svm_slave_init. The caller needs to acquire
+ * Subtly different than svm_client_init. The caller needs to acquire
* a usable file descriptor for the memfd segment e.g. via
* vppinfra/socket.c:default_socket_recvmsg
*/
int
-ssvm_slave_init_memfd (ssvm_private_t * memfd)
+ssvm_client_init_memfd (ssvm_private_t * memfd)
{
- clib_mem_vm_map_t mapa = { 0 };
+ int mmap_flags = MAP_SHARED;
ssvm_shared_header_t *sh;
uword page_size;
- memfd->i_am_master = 0;
+ memfd->is_server = 0;
page_size = clib_mem_get_fd_page_size (memfd->fd);
if (!page_size)
return SSVM_API_ERROR_MMAP;
}
+ if (memfd->requested_va)
+ mmap_flags |= MAP_FIXED;
+
/*
* Map the segment once, to look at the shared header
*/
- mapa.fd = memfd->fd;
- mapa.size = page_size;
+ sh = (void *) mmap (0, page_size, PROT_READ | PROT_WRITE, MAP_SHARED,
+ memfd->fd, 0);
- if (clib_mem_vm_ext_map (&mapa))
+ if (sh == MAP_FAILED)
{
- clib_unix_warning ("slave research mmap (fd %d)", mapa.fd);
+ clib_unix_warning ("client research mmap (fd %d)", memfd->fd);
close (memfd->fd);
return SSVM_API_ERROR_MMAP;
}
- sh = mapa.addr;
memfd->requested_va = sh->ssvm_va;
memfd->ssvm_size = sh->ssvm_size;
- clib_mem_vm_free (sh, page_size);
+ munmap (sh, page_size);
/*
* Remap the segment at the 'right' address
*/
- mapa.requested_va = memfd->requested_va;
- mapa.size = memfd->ssvm_size;
- if (clib_mem_vm_ext_map (&mapa))
+ sh = (void *) mmap (uword_to_pointer (memfd->requested_va, void *),
+ memfd->ssvm_size,
+ PROT_READ | PROT_WRITE, mmap_flags, memfd->fd, 0);
+
+ if (sh == MAP_FAILED)
{
- clib_unix_warning ("slave final mmap");
+ clib_unix_warning ("client final mmap");
close (memfd->fd);
return SSVM_API_ERROR_MMAP;
}
- sh = mapa.addr;
- sh->slave_pid = getpid ();
+ sh->client_pid = getpid ();
memfd->sh = sh;
return 0;
}
ssvm_delete_memfd (ssvm_private_t * memfd)
{
vec_free (memfd->name);
- if (memfd->i_am_master)
+ if (memfd->is_server)
clib_mem_vm_unmap (memfd->sh);
else
- clib_mem_vm_free (memfd->sh, memfd->ssvm_size);
+ munmap (memfd->sh, memfd->ssvm_size);
close (memfd->fd);
}
* Initialize segment in a private heap
*/
int
-ssvm_master_init_private (ssvm_private_t * ssvm)
+ssvm_server_init_private (ssvm_private_t * ssvm)
{
uword page_size, log2_page_size, rnd_size = 0;
ssvm_shared_header_t *sh;
- void *oldheap;
- u8 *heap;
+ clib_mem_heap_t *heap, *oldheap;
log2_page_size = clib_mem_get_log2_page_size ();
if (log2_page_size == 0)
{
- clib_unix_warning (0, "cannot determine page size");
+ clib_unix_warning ("cannot determine page size");
return SSVM_API_ERROR_CREATE_FAILURE;
}
- page_size = 1 << log2_page_size;
+ page_size = 1ULL << log2_page_size;
rnd_size = clib_max (ssvm->ssvm_size + (page_size - 1), ssvm->ssvm_size);
rnd_size &= ~(page_size - 1);
}
heap = clib_mem_create_heap ((u8 *) sh + page_size, rnd_size,
- 1 /* locked */ , "ssvm master private");
+ 1 /* locked */ , "ssvm server private");
if (heap == 0)
{
clib_unix_warning ("heap alloc");
rnd_size = clib_mem_get_heap_free_space (heap);
ssvm->ssvm_size = rnd_size;
- ssvm->i_am_master = 1;
+ ssvm->is_server = 1;
ssvm->my_pid = getpid ();
ssvm->requested_va = ~0;
}
int
-ssvm_slave_init_private (ssvm_private_t * ssvm)
+ssvm_client_init_private (ssvm_private_t * ssvm)
{
clib_warning ("BUG: this should not be called!");
return -1;
}
int
-ssvm_master_init (ssvm_private_t * ssvm, ssvm_segment_type_t type)
+ssvm_server_init (ssvm_private_t * ssvm, ssvm_segment_type_t type)
{
- return (master_init_fns[type]) (ssvm);
+ return (server_init_fns[type]) (ssvm);
}
int
-ssvm_slave_init (ssvm_private_t * ssvm, ssvm_segment_type_t type)
+ssvm_client_init (ssvm_private_t * ssvm, ssvm_segment_type_t type)
{
- return (slave_init_fns[type]) (ssvm);
+ return (client_init_fns[type]) (ssvm);
}
void