*/
#include <vnet/session/application_namespace.h>
+#include <vnet/session/application.h>
#include <vnet/session/session_table.h>
#include <vnet/session/session.h>
#include <vnet/fib/fib_table.h>
+#include <vppinfra/file.h>
+#include <vlib/unix/unix.h>
/**
* Hash table of application namespaces by app ns ids
*/
static app_namespace_t *app_namespace_pool;
+static u8 app_sapi_enabled;
+
app_namespace_t *
app_namespace_get (u32 index)
{
app_ns->ip6_fib_index =
fib_table_find (FIB_PROTOCOL_IP6, a->ip6_fib_id);
session_lookup_set_tables_appns (app_ns);
+
+ /* Add socket for namespace */
+ if (app_sapi_enabled)
+ appns_sapi_add_ns_socket (app_ns);
}
else
{
return session_table_get (app_ns->local_table_index);
}
+void
+appns_sapi_enable (void)
+{
+ app_sapi_enabled = 1;
+}
+
+u8
+appns_sapi_enabled (void)
+{
+ return app_sapi_enabled;
+}
+
void
app_namespaces_init (void)
{
return s;
}
+static void
+app_namespace_show_api (vlib_main_t * vm, app_namespace_t * app_ns)
+{
+ app_ns_api_handle_t *handle;
+ app_worker_t *app_wrk;
+ clib_socket_t *cs;
+ clib_file_t *cf;
+
+ if (!app_sapi_enabled)
+ {
+ vlib_cli_output (vm, "app socket api not enabled!");
+ return;
+ }
+
+ vlib_cli_output (vm, "socket: %v\n", app_ns->sock_name);
+
+ if (!pool_elts (app_ns->app_sockets))
+ return;
+
+ vlib_cli_output (vm, "%12s%12s%5s", "app index", "wrk index", "fd");
+
+
+ /* *INDENT-OFF* */
+ pool_foreach (cs, app_ns->app_sockets, ({
+ handle = (app_ns_api_handle_t *) &cs->private_data;
+ cf = clib_file_get (&file_main, handle->aah_file_index);
+ if (handle->aah_app_wrk_index == APP_INVALID_INDEX)
+ {
+ vlib_cli_output (vm, "%12d%12d%5u", -1, -1, cf->file_descriptor);
+ continue;
+ }
+ app_wrk = app_worker_get (handle->aah_app_wrk_index);
+ vlib_cli_output (vm, "%12d%12d%5u", app_wrk->app_index,
+ app_wrk->wrk_map_index, cf->file_descriptor);
+ }));
+ /* *INDENT-ON* */
+}
+
static clib_error_t *
show_app_ns_fn (vlib_main_t * vm, unformat_input_t * main_input,
vlib_cli_command_t * cmd)
{
unformat_input_t _line_input, *line_input = &_line_input;
+ u8 *ns_id, do_table = 0, had_input = 1, do_api = 0;
app_namespace_t *app_ns;
session_table_t *st;
- u8 *ns_id, do_table = 0, had_input = 1;
session_cli_return_if_not_enabled ();
{
if (unformat (line_input, "table %_%v%_", &ns_id))
do_table = 1;
+ else if (unformat (line_input, "api-clients"))
+ do_api = 1;
else
{
vlib_cli_output (vm, "unknown input [%U]", format_unformat_error,
}
}
+ if (do_api)
+ {
+ if (!do_table)
+ {
+ vlib_cli_output (vm, "must specify a table for api");
+ goto done;
+ }
+ app_ns = app_namespace_get_from_id (ns_id);
+ app_namespace_show_api (vm, app_ns);
+ goto done;
+ }
if (do_table)
{
app_ns = app_namespace_get_from_id (ns_id);
VLIB_CLI_COMMAND (show_app_ns_command, static) =
{
.path = "show app ns",
- .short_help = "show app ns",
+ .short_help = "show app ns [table <id> [api-clients]]",
.function = show_app_ns_fn,
};
/* *INDENT-ON* */
if (!reg)
return;
- if (session_main_is_enabled () == 0)
+ if (!session_main_is_enabled () || appns_sapi_enabled ())
{
rv = VNET_API_ERROR_FEATURE_DISABLED;
goto done;
application_t *app;
u8 fd_flags = 0;
- if (session_main_is_enabled () == 0)
+ if (!session_main_is_enabled () || appns_sapi_enabled ())
{
rv = VNET_API_ERROR_FEATURE_DISABLED;
goto done;
vnet_app_detach_args_t _a, *a = &_a;
application_t *app;
- if (session_main_is_enabled () == 0)
+ if (!session_main_is_enabled () || appns_sapi_enabled ())
{
rv = VNET_API_ERROR_FEATURE_DISABLED;
goto done;
VLIB_API_INIT_FUNCTION (session_api_hookup);
+/*
+ * Socket api functions
+ */
+
+static void
+sapi_send_fds (app_worker_t * app_wrk, int *fds, int n_fds)
+{
+ app_sapi_msg_t smsg = { 0 };
+ app_namespace_t *app_ns;
+ application_t *app;
+ clib_socket_t *cs;
+ u32 cs_index;
+
+ app = application_get (app_wrk->app_index);
+ app_ns = app_namespace_get (app->ns_index);
+ cs_index = appns_sapi_handle_sock_index (app_wrk->api_client_index);
+ cs = appns_sapi_get_socket (app_ns, cs_index);
+
+ /* There's no payload for the message only the type */
+ smsg.type = APP_SAPI_MSG_TYPE_SEND_FDS;
+ clib_socket_sendmsg (cs, &smsg, sizeof (smsg), fds, n_fds);
+}
+
+static int
+mq_send_add_segment_sapi_cb (u32 app_wrk_index, u64 segment_handle)
+{
+ int fds[SESSION_N_FD_TYPE], n_fds = 0;
+ svm_msg_q_msg_t _msg, *msg = &_msg;
+ session_app_add_segment_msg_t *mp;
+ app_worker_t *app_wrk;
+ session_event_t *evt;
+ svm_msg_q_t *app_mq;
+ fifo_segment_t *fs;
+ ssvm_private_t *sp;
+ u8 fd_flags = 0;
+
+ app_wrk = app_worker_get (app_wrk_index);
+
+ fs = segment_manager_get_segment_w_handle (segment_handle);
+ sp = &fs->ssvm;
+ ASSERT (ssvm_type (sp) == SSVM_SEGMENT_MEMFD);
+
+ fd_flags |= SESSION_FD_F_MEMFD_SEGMENT;
+ fds[n_fds] = sp->fd;
+ n_fds += 1;
+
+ app_mq = app_wrk->event_queue;
+ if (mq_try_lock_and_alloc_msg (app_mq, msg))
+ return -1;
+
+ /*
+ * Send the fd over api socket
+ */
+ sapi_send_fds (app_wrk, fds, n_fds);
+
+ /*
+ * Send the actual message over mq
+ */
+ evt = svm_msg_q_msg_data (app_mq, msg);
+ clib_memset (evt, 0, sizeof (*evt));
+ evt->event_type = SESSION_CTRL_EVT_APP_ADD_SEGMENT;
+ mp = (session_app_add_segment_msg_t *) evt->data;
+ clib_memset (mp, 0, sizeof (*mp));
+ mp->segment_size = sp->ssvm_size;
+ mp->fd_flags = fd_flags;
+ mp->segment_handle = segment_handle;
+ strncpy ((char *) mp->segment_name, (char *) sp->name,
+ sizeof (mp->segment_name) - 1);
+
+ svm_msg_q_add_and_unlock (app_mq, msg);
+
+ return 0;
+}
+
+static int
+mq_send_del_segment_sapi_cb (u32 app_wrk_index, u64 segment_handle)
+{
+ svm_msg_q_msg_t _msg, *msg = &_msg;
+ session_app_del_segment_msg_t *mp;
+ app_worker_t *app_wrk;
+ session_event_t *evt;
+ svm_msg_q_t *app_mq;
+
+ app_wrk = app_worker_get (app_wrk_index);
+
+ app_mq = app_wrk->event_queue;
+ if (mq_try_lock_and_alloc_msg (app_mq, msg))
+ return -1;
+
+ evt = svm_msg_q_msg_data (app_mq, msg);
+ clib_memset (evt, 0, sizeof (*evt));
+ evt->event_type = SESSION_CTRL_EVT_APP_DEL_SEGMENT;
+ mp = (session_app_del_segment_msg_t *) evt->data;
+ clib_memset (mp, 0, sizeof (*mp));
+ mp->segment_handle = segment_handle;
+ svm_msg_q_add_and_unlock (app_mq, msg);
+
+ return 0;
+}
+
+static session_cb_vft_t session_mq_sapi_cb_vft = {
+ .session_accept_callback = mq_send_session_accepted_cb,
+ .session_disconnect_callback = mq_send_session_disconnected_cb,
+ .session_connected_callback = mq_send_session_connected_cb,
+ .session_reset_callback = mq_send_session_reset_cb,
+ .session_migrate_callback = mq_send_session_migrate_cb,
+ .session_cleanup_callback = mq_send_session_cleanup_cb,
+ .add_segment_callback = mq_send_add_segment_sapi_cb,
+ .del_segment_callback = mq_send_del_segment_sapi_cb,
+};
+
+static void
+session_api_attach_handler (app_namespace_t * app_ns, clib_socket_t * cs,
+ app_sapi_attach_msg_t * mp)
+{
+ int rv = 0, fds[SESSION_N_FD_TYPE], n_fds = 0;
+ vnet_app_attach_args_t _a, *a = &_a;
+ app_sapi_attach_reply_msg_t *rmp;
+ ssvm_private_t *evt_q_segment;
+ u8 fd_flags = 0, ctrl_thread;
+ app_ns_api_handle_t *handle;
+ app_sapi_msg_t msg = { 0 };
+ app_worker_t *app_wrk;
+ svm_msg_q_t *ctrl_mq;
+ application_t *app;
+
+ /* Make sure name is null terminated */
+ mp->name[63] = 0;
+
+ clib_memset (a, 0, sizeof (*a));
+ a->api_client_index = appns_sapi_socket_handle (app_ns, cs);
+ a->name = format (0, "%s", (char *) mp->name);
+ a->options = mp->options;
+ a->session_cb_vft = &session_mq_sapi_cb_vft;
+ a->use_sock_api = 1;
+ a->options[APP_OPTIONS_NAMESPACE] = app_namespace_index (app_ns);
+
+ if ((rv = vnet_application_attach (a)))
+ {
+ clib_warning ("attach returned: %d", rv);
+ goto done;
+ }
+
+ /* Send event queues segment */
+ if ((evt_q_segment = session_main_get_evt_q_segment ()))
+ {
+ fd_flags |= SESSION_FD_F_VPP_MQ_SEGMENT;
+ fds[n_fds] = evt_q_segment->fd;
+ n_fds += 1;
+ }
+ /* Send fifo segment fd if needed */
+ if (ssvm_type (a->segment) == SSVM_SEGMENT_MEMFD)
+ {
+ fd_flags |= SESSION_FD_F_MEMFD_SEGMENT;
+ fds[n_fds] = a->segment->fd;
+ n_fds += 1;
+ }
+ if (a->options[APP_OPTIONS_FLAGS] & APP_OPTIONS_FLAGS_EVT_MQ_USE_EVENTFD)
+ {
+ fd_flags |= SESSION_FD_F_MQ_EVENTFD;
+ fds[n_fds] = svm_msg_q_get_producer_eventfd (a->app_evt_q);
+ n_fds += 1;
+ }
+
+done:
+
+ msg.type = APP_SAPI_MSG_TYPE_ATTACH_REPLY;
+ rmp = &msg.attach_reply;
+ rmp->retval = rv;
+ if (!rv)
+ {
+ ctrl_thread = vlib_num_workers ()? 1 : 0;
+ ctrl_mq = session_main_get_vpp_event_queue (ctrl_thread);
+ rmp->app_index = a->app_index;
+ rmp->app_mq = pointer_to_uword (a->app_evt_q);
+ rmp->vpp_ctrl_mq = pointer_to_uword (ctrl_mq);
+ rmp->vpp_ctrl_mq_thread = ctrl_thread;
+ rmp->n_fds = n_fds;
+ rmp->fd_flags = fd_flags;
+ /* No segment name and size since we only support memfds
+ * in this configuration */
+ rmp->segment_handle = a->segment_handle;
+ rmp->api_client_handle = a->api_client_index;
+
+ /* Update app index for socket */
+ handle = (app_ns_api_handle_t *) & cs->private_data;
+ app = application_get (a->app_index);
+ app_wrk = application_get_worker (app, 0);
+ handle->aah_app_wrk_index = app_wrk->wrk_index;
+ }
+
+ clib_socket_sendmsg (cs, &msg, sizeof (msg), fds, n_fds);
+ vec_free (a->name);
+}
+
+static void
+sapi_socket_close_w_handle (u32 api_handle)
+{
+ app_namespace_t *app_ns = app_namespace_get (api_handle >> 16);
+ u16 sock_index = api_handle & 0xffff;
+ app_ns_api_handle_t *handle;
+ clib_socket_t *cs;
+ clib_file_t *cf;
+
+ cs = appns_sapi_get_socket (app_ns, sock_index);
+ if (!cs)
+ return;
+
+ handle = (app_ns_api_handle_t *) & cs->private_data;
+ cf = clib_file_get (&file_main, handle->aah_file_index);
+ clib_file_del (&file_main, cf);
+
+ clib_socket_close (cs);
+ appns_sapi_free_socket (app_ns, cs);
+}
+
+static void
+sapi_add_del_worker_handler (app_namespace_t * app_ns,
+ clib_socket_t * cs,
+ app_sapi_worker_add_del_msg_t * mp)
+{
+ int rv = 0, fds[SESSION_N_FD_TYPE], n_fds = 0;
+ app_sapi_worker_add_del_reply_msg_t *rmp;
+ app_ns_api_handle_t *handle;
+ app_sapi_msg_t msg = { 0 };
+ app_worker_t *app_wrk;
+ application_t *app;
+ u32 sapi_handle;
+ u8 fd_flags = 0;
+
+ app = application_get_if_valid (mp->app_index);
+ if (!app)
+ {
+ rv = VNET_API_ERROR_INVALID_VALUE;
+ goto done;
+ }
+
+ sapi_handle = appns_sapi_socket_handle (app_ns, cs);
+
+ vnet_app_worker_add_del_args_t args = {
+ .app_index = app->app_index,
+ .wrk_map_index = mp->wrk_index,
+ .api_client_index = sapi_handle,
+ .is_add = mp->is_add
+ };
+ rv = vnet_app_worker_add_del (&args);
+ if (rv)
+ {
+ clib_warning ("app worker add/del returned: %d", rv);
+ goto done;
+ }
+
+ if (!mp->is_add)
+ {
+ sapi_socket_close_w_handle (sapi_handle);
+ goto done;
+ }
+
+ /* Send fifo segment fd if needed */
+ if (ssvm_type (args.segment) == SSVM_SEGMENT_MEMFD)
+ {
+ fd_flags |= SESSION_FD_F_MEMFD_SEGMENT;
+ fds[n_fds] = args.segment->fd;
+ n_fds += 1;
+ }
+ if (application_segment_manager_properties (app)->use_mq_eventfd)
+ {
+ fd_flags |= SESSION_FD_F_MQ_EVENTFD;
+ fds[n_fds] = svm_msg_q_get_producer_eventfd (args.evt_q);
+ n_fds += 1;
+ }
+
+done:
+
+ msg.type = APP_SAPI_MSG_TYPE_ADD_DEL_WORKER_REPLY;
+ rmp = &msg.worker_add_del_reply;
+ rmp->retval = rv;
+ rmp->is_add = mp->is_add;
+ rmp->wrk_index = args.wrk_map_index;
+ rmp->segment_handle = args.segment_handle;
+ if (!rv && mp->is_add)
+ {
+ /* No segment name and size. This supports only memfds */
+ rmp->app_event_queue_address = pointer_to_uword (args.evt_q);
+ rmp->n_fds = n_fds;
+ rmp->fd_flags = fd_flags;
+
+ /* Update app index for socket */
+ handle = (app_ns_api_handle_t *) & cs->private_data;
+ app_wrk = application_get_worker (app, args.wrk_map_index);
+ handle->aah_app_wrk_index = app_wrk->wrk_index;
+ }
+
+ clib_socket_sendmsg (cs, &msg, sizeof (msg), fds, n_fds);
+}
+
+static void
+sapi_socket_detach (app_namespace_t * app_ns, clib_socket_t * cs)
+{
+ vnet_app_detach_args_t _a = { 0 }, *a = &_a;
+ app_ns_api_handle_t *handle;
+ app_worker_t *app_wrk;
+ u32 api_client_handle;
+
+ api_client_handle = appns_sapi_socket_handle (app_ns, cs);
+ sapi_socket_close_w_handle (api_client_handle);
+
+ /* Cleanup everything because app closed socket or crashed */
+ handle = (app_ns_api_handle_t *) & cs->private_data;
+ app_wrk = app_worker_get (handle->aah_app_wrk_index);
+ a->app_index = app_wrk->app_index;
+ a->api_client_index = api_client_handle;
+ vnet_application_detach (a);
+}
+
+static clib_error_t *
+sapi_sock_read_ready (clib_file_t * cf)
+{
+ app_ns_api_handle_t *handle = (app_ns_api_handle_t *) & cf->private_data;
+ app_sapi_msg_t msg = { 0 };
+ app_namespace_t *app_ns;
+ clib_error_t *err = 0;
+ clib_socket_t *cs;
+
+ app_ns = app_namespace_get (handle->aah_app_ns_index);
+ cs = appns_sapi_get_socket (app_ns, handle->aah_sock_index);
+ if (!cs)
+ goto error;
+
+ err = clib_socket_recvmsg (cs, &msg, sizeof (msg), 0, 0);
+ if (err)
+ {
+ clib_error_free (err);
+ sapi_socket_detach (app_ns, cs);
+ goto error;
+ }
+
+ handle = (app_ns_api_handle_t *) & cs->private_data;
+
+ switch (msg.type)
+ {
+ case APP_SAPI_MSG_TYPE_ATTACH:
+ session_api_attach_handler (app_ns, cs, &msg.attach);
+ break;
+ case APP_SAPI_MSG_TYPE_ADD_DEL_WORKER:
+ sapi_add_del_worker_handler (app_ns, cs, &msg.worker_add_del);
+ break;
+ default:
+ clib_warning ("app wrk %u unknown message type: %u",
+ handle->aah_app_wrk_index, msg.type);
+ break;
+ }
+
+error:
+ return 0;
+}
+
+static clib_error_t *
+sapi_sock_write_ready (clib_file_t * cf)
+{
+ app_ns_api_handle_t *handle = (app_ns_api_handle_t *) & cf->private_data;
+ clib_warning ("called for app ns %u", handle->aah_app_ns_index);
+ return 0;
+}
+
+static clib_error_t *
+sapi_sock_error (clib_file_t * cf)
+{
+ app_ns_api_handle_t *handle = (app_ns_api_handle_t *) & cf->private_data;
+ app_namespace_t *app_ns;
+ clib_socket_t *cs;
+
+ app_ns = app_namespace_get (handle->aah_app_ns_index);
+ cs = appns_sapi_get_socket (app_ns, handle->aah_sock_index);
+ if (!cs)
+ return 0;
+
+ sapi_socket_detach (app_ns, cs);
+ return 0;
+}
+
+static clib_error_t *
+sapi_sock_accept_ready (clib_file_t * scf)
+{
+ app_ns_api_handle_t handle = *(app_ns_api_handle_t *) & scf->private_data;
+ app_namespace_t *app_ns;
+ clib_file_t cf = { 0 };
+ clib_error_t *err = 0;
+ clib_socket_t *ccs, *scs;
+
+ /* Listener files point to namespace */
+ app_ns = app_namespace_get (handle.aah_app_ns_index);
+
+ /*
+ * Initialize client socket
+ */
+ ccs = appns_sapi_alloc_socket (app_ns);
+
+ /* Grab server socket after client is initialized */
+ scs = appns_sapi_get_socket (app_ns, handle.aah_sock_index);
+ if (!scs)
+ goto error;
+
+ err = clib_socket_accept (scs, ccs);
+ if (err)
+ {
+ clib_error_report (err);
+ goto error;
+ }
+
+ cf.read_function = sapi_sock_read_ready;
+ cf.write_function = sapi_sock_write_ready;
+ cf.error_function = sapi_sock_error;
+ cf.file_descriptor = ccs->fd;
+ /* File points to app namespace and socket */
+ handle.aah_sock_index = appns_sapi_socket_index (app_ns, ccs);
+ cf.private_data = handle.as_uword;
+ cf.description = format (0, "app sock conn fd: %d", ccs->fd);
+
+ /* Poll until we get an attach message. Socket points to file and
+ * application that owns the socket */
+ handle.aah_app_wrk_index = APP_INVALID_INDEX;
+ handle.aah_file_index = clib_file_add (&file_main, &cf);
+ ccs->private_data = handle.as_uword;
+
+ return err;
+
+error:
+ appns_sapi_free_socket (app_ns, ccs);
+ return err;
+}
+
+int
+appns_sapi_add_ns_socket (app_namespace_t * app_ns)
+{
+ char *subdir = "/app_ns_sockets/";
+ app_ns_api_handle_t *handle;
+ clib_file_t cf = { 0 };
+ struct stat file_stat;
+ clib_error_t *err;
+ clib_socket_t *cs;
+ u8 *dir = 0;
+ int rv = 0;
+
+ vec_add (dir, vlib_unix_get_runtime_dir (),
+ strlen (vlib_unix_get_runtime_dir ()));
+ vec_add (dir, (u8 *) subdir, strlen (subdir));
+
+ err = vlib_unix_recursive_mkdir ((char *) dir);
+ if (err)
+ {
+ clib_error_report (err);
+ rv = -1;
+ goto error;
+ }
+
+ app_ns->sock_name = format (0, "%v%v%c", dir, app_ns->ns_id, 0);
+
+ /*
+ * Create and initialize socket to listen on
+ */
+ cs = appns_sapi_alloc_socket (app_ns);
+ cs->config = (char *) app_ns->sock_name;
+ cs->flags = CLIB_SOCKET_F_IS_SERVER |
+ CLIB_SOCKET_F_ALLOW_GROUP_WRITE |
+ CLIB_SOCKET_F_SEQPACKET | CLIB_SOCKET_F_PASSCRED;
+
+ if ((err = clib_socket_init (cs)))
+ {
+ clib_error_report (err);
+ rv = -1;
+ goto error;
+ }
+
+ if (stat ((char *) app_ns->sock_name, &file_stat) == -1)
+ {
+ rv = -1;
+ goto error;
+ }
+
+ /*
+ * Start polling it
+ */
+ cf.read_function = sapi_sock_accept_ready;
+ cf.file_descriptor = cs->fd;
+ /* File points to namespace */
+ handle = (app_ns_api_handle_t *) & cf.private_data;
+ handle->aah_app_ns_index = app_namespace_index (app_ns);
+ handle->aah_sock_index = appns_sapi_socket_index (app_ns, cs);
+ cf.description = format (0, "app sock listener: %s", app_ns->sock_name);
+
+ /* Socket points to clib file index */
+ handle = (app_ns_api_handle_t *) & cs->private_data;
+ handle->aah_file_index = clib_file_add (&file_main, &cf);
+ handle->aah_app_wrk_index = APP_INVALID_INDEX;
+
+error:
+ vec_free (dir);
+ return rv;
+}
+
/*
* fd.io coding-style-patch-verification: ON
*
Code Review / vpp.git / commitdiff