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authorDamjan Marion <dmarion@me.com>2023-01-30 11:48:38 +0100
committerOle Tr�an <otroan@employees.org>2023-02-06 10:17:40 +0000
commit085757bb4930511928daa97f972cdca021e7a813 (patch)
tree5edf076e28156d9834fa37029028f2f5c5f568b9 /src/plugins/memif/memif.c
parent0df06b6e95b6a3261c8e9c261c7a4a661d6ea25a (diff)
vppinfra: refactor clib_socket_init, add linux netns support
Type: improvement Change-Id: Ida2d044bccf0bc8914b4fe7d383f827400fa6a52 Signed-off-by: Damjan Marion <dmarion@me.com>
Diffstat (limited to 'src/plugins/memif/memif.c')
-rw-r--r--src/plugins/memif/memif.c194
1 files changed, 72 insertions, 122 deletions
diff --git a/src/plugins/memif/memif.c b/src/plugins/memif/memif.c
index 12d81ee7975..eee38f09a5b 100644
--- a/src/plugins/memif/memif.c
+++ b/src/plugins/memif/memif.c
@@ -641,8 +641,8 @@ memif_process (vlib_main_t * vm, vlib_node_runtime_t * rt, vlib_frame_t * f)
{
clib_memset (sock, 0, sizeof(clib_socket_t));
sock->config = (char *) msf->filename;
- sock->flags = CLIB_SOCKET_F_IS_CLIENT | CLIB_SOCKET_F_SEQPACKET |
- CLIB_SOCKET_F_BLOCKING;
+ sock->is_seqpacket = 1;
+ sock->is_blocking = 1;
if ((err = clib_socket_init (sock)))
{
@@ -675,79 +675,22 @@ memif_process (vlib_main_t * vm, vlib_node_runtime_t * rt, vlib_frame_t * f)
return 0;
}
-/* *INDENT-OFF* */
VLIB_REGISTER_NODE (memif_process_node,static) = {
.function = memif_process,
.type = VLIB_NODE_TYPE_PROCESS,
.name = "memif-process",
};
-/* *INDENT-ON* */
-
-static clib_error_t *
-memif_add_socket_file (u32 sock_id, u8 *socket_filename)
-{
- memif_main_t *mm = &memif_main;
- uword *p;
- memif_socket_file_t *msf;
-
- p = hash_get (mm->socket_file_index_by_sock_id, sock_id);
- if (p)
- {
- msf = pool_elt_at_index (mm->socket_files, *p);
- if (strcmp ((char *) msf->filename, (char *) socket_filename) == 0)
- {
- /* Silently accept identical "add". */
- return 0;
- }
-
- /* But don't allow a direct add of a different filename. */
- return vnet_error (VNET_ERR_ENTRY_ALREADY_EXISTS,
- "entry already exists");
- }
-
- pool_get (mm->socket_files, msf);
- clib_memset (msf, 0, sizeof (memif_socket_file_t));
-
- msf->filename = socket_filename;
- msf->socket_id = sock_id;
- hash_set (mm->socket_file_index_by_sock_id, sock_id,
- msf - mm->socket_files);
-
- return 0;
-}
-
-static clib_error_t *
-memif_delete_socket_file (u32 sock_id)
+clib_error_t *
+memif_socket_filename_add_del (u8 is_add, u32 sock_id, char *sock_filename)
{
memif_main_t *mm = &memif_main;
uword *p;
memif_socket_file_t *msf;
-
- p = hash_get (mm->socket_file_index_by_sock_id, sock_id);
- if (!p)
- /* Don't delete non-existent entries. */
- return vnet_error (VNET_ERR_INVALID_ARGUMENT,
- "socket file with id %u does not exist", sock_id);
-
- msf = pool_elt_at_index (mm->socket_files, *p);
- if (msf->ref_cnt > 0)
- return vnet_error (VNET_ERR_UNEXPECTED_INTF_STATE,
- "socket file '%s' is in use", msf->filename);
-
- vec_free (msf->filename);
- pool_put (mm->socket_files, msf);
-
- hash_unset (mm->socket_file_index_by_sock_id, sock_id);
-
- return 0;
-}
-
-clib_error_t *
-memif_socket_filename_add_del (u8 is_add, u32 sock_id, u8 *sock_filename)
-{
+ clib_error_t *err = 0;
char *dir = 0, *tmp;
u32 idx = 0;
+ u8 *name = 0;
/* allow adding socket id 0 */
if (sock_id == 0 && is_add == 0)
@@ -758,70 +701,95 @@ memif_socket_filename_add_del (u8 is_add, u32 sock_id, u8 *sock_filename)
"socked id is not specified");
if (is_add == 0)
- return memif_delete_socket_file (sock_id);
+ {
+ p = hash_get (mm->socket_file_index_by_sock_id, sock_id);
+ if (!p)
+ /* Don't delete non-existent entries. */
+ return vnet_error (VNET_ERR_INVALID_ARGUMENT,
+ "socket file with id %u does not exist", sock_id);
+
+ msf = pool_elt_at_index (mm->socket_files, *p);
+ if (msf->ref_cnt > 0)
+ return vnet_error (VNET_ERR_UNEXPECTED_INTF_STATE,
+ "socket file '%s' is in use", msf->filename);
+
+ vec_free (msf->filename);
+ pool_put (mm->socket_files, msf);
+
+ hash_unset (mm->socket_file_index_by_sock_id, sock_id);
+
+ return 0;
+ }
if (sock_filename == 0 || sock_filename[0] == 0)
return vnet_error (VNET_ERR_INVALID_ARGUMENT,
"socket filename not specified");
- if (sock_filename[0] != '/')
+ if (clib_socket_prefix_is_valid (sock_filename))
+ {
+ name = format (0, "%s%c", sock_filename, 0);
+ }
+ else if (sock_filename[0] == '/')
+ {
+ name = format (0, "%s%c", sock_filename, 0);
+ }
+ else
{
- clib_error_t *error;
-
/* copy runtime dir path */
vec_add (dir, vlib_unix_get_runtime_dir (),
strlen (vlib_unix_get_runtime_dir ()));
vec_add1 (dir, '/');
/* if sock_filename contains dirs, add them to path */
- tmp = strrchr ((char *) sock_filename, '/');
+ tmp = strrchr (sock_filename, '/');
if (tmp)
{
- idx = tmp - (char *) sock_filename;
+ idx = tmp - sock_filename;
vec_add (dir, sock_filename, idx);
}
vec_add1 (dir, '\0');
/* create socket dir */
- error = vlib_unix_recursive_mkdir (dir);
- if (error)
+ if ((err = vlib_unix_recursive_mkdir (dir)))
{
- clib_error_free (error);
- return vnet_error (VNET_ERR_SYSCALL_ERROR_1,
- "unable to create socket dir");
+ clib_error_free (err);
+ err = vnet_error (VNET_ERR_SYSCALL_ERROR_1,
+ "unable to create socket dir");
+ goto done;
}
- sock_filename = format (0, "%s/%s%c", vlib_unix_get_runtime_dir (),
- sock_filename, 0);
+ name =
+ format (0, "%s/%s%c", vlib_unix_get_runtime_dir (), sock_filename, 0);
}
- else
- {
- sock_filename = vec_dup (sock_filename);
- /* check if directory exists */
- tmp = strrchr ((char *) sock_filename, '/');
- if (tmp)
+ p = hash_get (mm->socket_file_index_by_sock_id, sock_id);
+ if (p)
+ {
+ msf = pool_elt_at_index (mm->socket_files, *p);
+ if (strcmp ((char *) msf->filename, (char *) name) == 0)
{
- idx = tmp - (char *) sock_filename;
- vec_add (dir, sock_filename, idx);
- vec_add1 (dir, '\0');
+ /* Silently accept identical "add". */
+ goto done;
}
- /* check dir existance and access rights for effective user/group IDs */
- if ((dir == NULL)
- ||
- (faccessat ( /* ignored */ -1, dir, F_OK | R_OK | W_OK, AT_EACCESS)
- < 0))
- {
- vec_free (dir);
- return vnet_error (
- VNET_ERR_INVALID_ARGUMENT,
- "directory doesn't exist or no access permissions");
- }
+ /* But don't allow a direct add of a different filename. */
+ err = vnet_error (VNET_ERR_ENTRY_ALREADY_EXISTS, "entry already exists");
+ goto done;
}
- vec_free (dir);
- return memif_add_socket_file (sock_id, sock_filename);
+ pool_get (mm->socket_files, msf);
+ clib_memset (msf, 0, sizeof (memif_socket_file_t));
+
+ msf->filename = name;
+ msf->socket_id = sock_id;
+ name = 0;
+
+ hash_set (mm->socket_file_index_by_sock_id, sock_id, msf - mm->socket_files);
+
+done:
+ vec_free (name);
+ vec_free (dir);
+ return err;
}
clib_error_t *
@@ -949,24 +917,6 @@ memif_create_if (vlib_main_t *vm, memif_create_if_args_t *args)
/* Create new socket file */
if (msf->ref_cnt == 0)
{
- struct stat file_stat;
-
- /* If we are creating listener make sure file doesn't exist or if it
- * exists thn delete it if it is old socket file */
- if (args->is_master && (stat ((char *) msf->filename, &file_stat) == 0))
- {
- if (S_ISSOCK (file_stat.st_mode))
- {
- unlink ((char *) msf->filename);
- }
- else
- {
- err = vnet_error (VNET_ERR_VALUE_EXIST, "File exists for %s",
- msf->filename);
- goto done;
- }
- }
-
mhash_init (&msf->dev_instance_by_id, sizeof (uword),
sizeof (memif_interface_id_t));
msf->dev_instance_by_fd = hash_create (0, sizeof (uword));
@@ -1068,9 +1018,11 @@ memif_create_if (vlib_main_t *vm, memif_create_if_args_t *args)
clib_memset (s, 0, sizeof (clib_socket_t));
s->config = (char *) msf->filename;
- s->flags = CLIB_SOCKET_F_IS_SERVER |
- CLIB_SOCKET_F_ALLOW_GROUP_WRITE |
- CLIB_SOCKET_F_SEQPACKET | CLIB_SOCKET_F_PASSCRED;
+ s->local_only = 1;
+ s->is_server = 1;
+ s->allow_group_write = 1;
+ s->is_seqpacket = 1;
+ s->passcred = 1;
if ((err = clib_socket_init (s)))
{
@@ -1159,9 +1111,7 @@ memif_init (vlib_main_t * vm)
* for socket-id 0 to MEMIF_DEFAULT_SOCKET_FILENAME in the
* default run-time directory.
*/
- memif_socket_filename_add_del (1, 0, (u8 *) MEMIF_DEFAULT_SOCKET_FILENAME);
-
- return 0;
+ return memif_socket_filename_add_del (1, 0, MEMIF_DEFAULT_SOCKET_FILENAME);
}
VLIB_INIT_FUNCTION (memif_init);