vcl/session: apps with process workers

Allow apps to register child processes as app workers. In particular,
on fork vcl now registers the child process with vpp as a new worker.

Change-Id: I52a65fbc3292962b1f6e1fe0f6153f739e6e0d4a
Signed-off-by: Florin Coras <fcoras@cisco.com>

1 files changed, 17 insertions, 2 deletions

diff --git a/src/vcl/vcl_private.h b/src/vcl/vcl_private.h
index d1a40b933a7..7bb0dbc5a66 100644
--- a/src/vcl/vcl_private.h
+++ b/src/vcl/vcl_private.h
@@ -219,8 +219,12 @@ typedef struct vcl_worker_
   /* Session pool */
   vcl_session_t *sessions;
 
+  /** Worker/thread index in current process */
   u32 wrk_index;
 
+  /** Worker index in vpp*/
+  u32 vpp_wrk_index;
+
   /** Message queues epoll fd. Initialized only if using mqs with eventfds */
   int mqs_epfd;
 
@@ -272,15 +276,26 @@ typedef struct vppcom_main_t_
   u32 debug;
   pthread_t main_cpu;
 
-  /** VPP binary api input queue */
-  svm_queue_t *vl_input_queue;
+  /** Main process pid */
+  pid_t main_pid;
+
+  /** Current pid, may be different from main_pid if forked child */
+  pid_t current_pid;
+
+  /** Main process api client index. It's used by vpp to identify the app */
+  u32 main_api_client_index;
 
   /** API client handle */
   u32 my_client_index;
 
+  /** VPP binary api input queue */
+  svm_queue_t *vl_input_queue;
+
   /** State of the connection, shared between msg RX thread and main thread */
   volatile app_state_t app_state;
 
+  u8 *app_name;
+
   /** VCL configuration */
   vppcom_cfg_t cfg;