vcl: add support for app socket api

To enable add "app-socket-api /path/to/socket" to vcl.conf. On vpp side, add
use-app-socket-api to session stanza in startup.conf

VPP allocates a socket per application namespace which it places in the
app_ns_sockets subfolder of the run folder (default /var/run/vpp). The
socket used implicitly selects the app namespace for the vcl app.

Type: feature

Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: Ifc14b93dcbf6ef9bed1852d46cd069f4855b92ef

1 files changed, 15 insertions, 6 deletions

diff --git a/src/vcl/vcl_bapi.c b/src/vcl/vcl_bapi.c
index d3a27acaced..900fb966242 100644
--- a/src/vcl/vcl_bapi.c
+++ b/src/vcl/vcl_bapi.c
@@ -61,12 +61,6 @@ static void
     vcm->bapi_app_state = STATE_APP_ENABLED;
 }
 
-static u64
-vcl_vpp_worker_segment_handle (u32 wrk_index)
-{
-  return (VCL_INVALID_SEGMENT_HANDLE - wrk_index - 1);
-}
-
 static void
 vl_api_app_attach_reply_t_handler (vl_api_app_attach_reply_t * mp)
 {
@@ -691,6 +685,21 @@ vcl_bapi_app_worker_del (vcl_worker_t * wrk)
 }
 
 int
+vcl_bapi_recv_fds (vcl_worker_t * wrk, int *fds, int n_fds)
+{
+  clib_error_t *err;
+
+  if ((err = vl_socket_client_recv_fd_msg2 (&wrk->bapi_sock_ctx, fds, n_fds,
+					    5)))
+    {
+      clib_error_report (err);
+      return -1;
+    }
+
+  return 0;
+}
+
+int
 vppcom_session_tls_add_cert (uint32_t session_handle, char *cert,
 			     uint32_t cert_len)
 {