vcl: support multi-threads with session migration

[vpp.git] / src / vnet / session / application_interface.h

diff --git a/src/vnet/session/application_interface.h b/src/vnet/session/application_interface.h
index 7d5d044..cddc031 100644 (file)
--- a/src/vnet/session/application_interface.h
+++ b/src/vnet/session/application_interface.h
@@ -200,6 +200,7 @@ typedef enum
   APP_OPTIONS_RX_FIFO_SIZE,
   APP_OPTIONS_TX_FIFO_SIZE,
   APP_OPTIONS_PREALLOC_FIFO_PAIRS,
+  APP_OPTIONS_PREALLOC_FIFO_HDRS,
   APP_OPTIONS_NAMESPACE,
   APP_OPTIONS_NAMESPACE_SECRET,
   APP_OPTIONS_PROXY_TRANSPORT,
@@ -314,6 +315,7 @@ typedef struct session_listen_msg_
   ip46_address_t ip;
   u32 ckpair_index;
   u8 crypto_engine;
+  u8 flags;
 } __clib_packed session_listen_msg_t;
 
 STATIC_ASSERT (sizeof (session_listen_msg_t) <= SESSION_CTRL_MSG_MAX_SIZE,
@@ -522,8 +524,16 @@ typedef struct session_migrate_msg_
 typedef struct session_cleanup_msg_
 {
   session_handle_t handle;
+  u8 type;
 } __clib_packed session_cleanup_msg_t;
 
+typedef struct session_app_wrk_rpc_msg_
+{
+  u32 client_index;    /**< app client index */
+  u32 wrk_index;       /**< dst worker index */
+  u8 data[64];         /**< rpc data */
+} __clib_packed session_app_wrk_rpc_msg_t;
+
 typedef struct app_session_event_
 {
   svm_msg_q_msg_t msg;
@@ -608,7 +618,7 @@ app_send_dgram_raw (svm_fifo_t * f, app_session_transport_t * at,
   int rv;
 
   max_enqueue = svm_fifo_max_enqueue_prod (f);
-  if (max_enqueue <= sizeof (session_dgram_hdr_t))
+  if (max_enqueue < (sizeof (session_dgram_hdr_t) + len))
     return 0;
 
   max_enqueue -= sizeof (session_dgram_hdr_t);
@@ -694,18 +704,21 @@ app_recv_dgram_raw (svm_fifo_t * f, u8 * buf, u32 len,
 
   svm_fifo_peek (f, 0, sizeof (ph), (u8 *) & ph);
   ASSERT (ph.data_length >= ph.data_offset);
-  if (!ph.data_offset)
-    svm_fifo_peek (f, sizeof (ph), sizeof (*at), (u8 *) at);
+
+  /* Check if we have the full dgram */
+  if (max_deq < (ph.data_length + SESSION_CONN_HDR_LEN)
+      && len >= ph.data_length)
+    return 0;
+
+  svm_fifo_peek (f, sizeof (ph), sizeof (*at), (u8 *) at);
   len = clib_min (len, ph.data_length - ph.data_offset);
   rv = svm_fifo_peek (f, ph.data_offset + SESSION_CONN_HDR_LEN, len, buf);
   if (peek)
     return rv;
-  ASSERT (rv > 0);
-  ph.data_offset += rv;
-  if (ph.data_offset == ph.data_length)
-    svm_fifo_dequeue_drop (f, ph.data_length + SESSION_CONN_HDR_LEN);
-  else
-    svm_fifo_overwrite_head (f, (u8 *) & ph, sizeof (ph));
+
+  /* Discards data that did not fit in buffer */
+  svm_fifo_dequeue_drop (f, ph.data_length + SESSION_CONN_HDR_LEN);
+
   return rv;
 }