session: add support for multiple app workers

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

diff --git a/src/vnet/session/stream_session.h b/src/vnet/session/stream_session.h
index 82bbf52..567962a 100644 (file)
--- a/src/vnet/session/stream_session.h
+++ b/src/vnet/session/stream_session.h
@@ -16,22 +16,10 @@
 #ifndef SRC_VNET_SESSION_STREAM_SESSION_H_
 #define SRC_VNET_SESSION_STREAM_SESSION_H_
 
-#include <vnet/vnet.h>
 #include <svm/svm_fifo.h>
+#include <vnet/session/transport.h>
 
-#define foreach_session_type                    \
-  _(IP4_TCP, ip4_tcp)                           \
-  _(IP4_UDP, ip4_udp)                           \
-  _(IP6_TCP, ip6_tcp)                           \
-  _(IP6_UDP, ip6_udp)
-
-typedef enum
-{
-#define _(A, a) SESSION_TYPE_##A,
-  foreach_session_type
-#undef _
-    SESSION_N_TYPES,
-} session_type_t;
+typedef u8 session_type_t;
 
 /*
  * Application session state
@@ -42,10 +30,21 @@ typedef enum
   SESSION_STATE_CONNECTING,
   SESSION_STATE_ACCEPTING,
   SESSION_STATE_READY,
+  SESSION_STATE_OPENED,
+  SESSION_STATE_CLOSING,
   SESSION_STATE_CLOSED,
   SESSION_STATE_N_STATES,
 } stream_session_state_t;
 
+typedef struct generic_session_
+{
+  svm_fifo_t *rx_fifo;         /**< rx fifo */
+  svm_fifo_t *tx_fifo;         /**< tx fifo */
+  session_type_t session_type; /**< session type */
+  volatile u8 session_state;   /**< session state */
+  u32 session_index;           /**< index in owning pool */
+} generic_session_t;
+
 typedef struct _stream_session_t
 {
   /** fifo pointers. Once allocated, these do not move */
@@ -53,39 +52,137 @@ typedef struct _stream_session_t
   svm_fifo_t *server_tx_fifo;
 
   /** Type */
-  u8 session_type;
+  session_type_t session_type;
 
   /** State */
-  u8 session_state;
+  volatile u8 session_state;
+
+  /** Session index in per_thread pool */
+  u32 session_index;
+
+  /** app worker pool index */
+  u32 app_wrk_index;
 
   u8 thread_index;
 
   /** To avoid n**2 "one event per frame" check */
   u8 enqueue_epoch;
 
-  /** Pad to a multiple of 8 octets */
-  u8 align_pad[4];
-
   /** svm segment index where fifos were allocated */
   u32 svm_segment_index;
 
-  /** Session index in per_thread pool */
-  u32 session_index;
-
   /** Transport specific */
   u32 connection_index;
 
-  /** stream server pool index */
-  u32 app_index;
+  union
+  {
+    /** Parent listener session if the result of an accept */
+    u32 listener_index;
+    /** Opaque, for general use */
+    u32 opaque;
+  };
+
+    CLIB_CACHE_LINE_ALIGN_MARK (pad);
+} stream_session_t;
+
+typedef struct local_session_
+{
+  /** fifo pointers. Once allocated, these do not move */
+  svm_fifo_t *server_rx_fifo;
+  svm_fifo_t *server_tx_fifo;
+
+  /** Type */
+  session_type_t session_type;
+
+  /** State */
+  volatile u8 session_state;
+
+  /** Session index */
+  u32 session_index;
+
+  /** Server index */
+  u32 app_wrk_index;
+
+  /** Segment index where fifos were allocated */
+  u32 svm_segment_index;
 
-  /** Parent listener session if the result of an accept */
   u32 listener_index;
 
-  u32 opaque2;
+  /** Port for connection */
+  u16 port;
 
-  /** Opaque, pad to a 64-octet boundary */
-  u64 opaque[2];
-} stream_session_t;
+  /** Has transport embedded when listener not purely local */
+  session_type_t listener_session_type;
+  u32 transport_listener_index;
+
+  /**
+   * Client data
+   */
+  u32 client_wrk_index;
+  u32 client_opaque;
+
+  u64 server_evt_q;
+  u64 client_evt_q;
+
+    CLIB_CACHE_LINE_ALIGN_MARK (pad);
+} local_session_t;
+
+#define foreach_session_endpoint_fields                                \
+    foreach_transport_connection_fields                                \
+    _(u8, transport_proto)                                     \
+
+typedef struct _session_endpoint
+{
+#define _(type, name) type name;
+  foreach_session_endpoint_fields
+#undef _
+} session_endpoint_t;
+
+typedef struct _session_endpoint_extended
+{
+#define _(type, name) type name;
+  foreach_session_endpoint_fields
+#undef _
+  u32 app_wrk_index;
+  u32 opaque;
+  u8 *hostname;
+} session_endpoint_extended_t;
+
+#define SESSION_IP46_ZERO                      \
+{                                              \
+    .ip6 = {                                   \
+       { 0, 0, },                              \
+    },                                         \
+}
+#define SESSION_ENDPOINT_NULL                  \
+{                                              \
+  .sw_if_index = ENDPOINT_INVALID_INDEX,       \
+  .ip = SESSION_IP46_ZERO,                     \
+  .fib_index = ENDPOINT_INVALID_INDEX,         \
+  .is_ip4 = 0,                                 \
+  .port = 0,                                   \
+  .transport_proto = 0,                                \
+}
+#define SESSION_ENDPOINT_EXT_NULL              \
+{                                              \
+  .sw_if_index = ENDPOINT_INVALID_INDEX,       \
+  .ip = SESSION_IP46_ZERO,                     \
+  .fib_index = ENDPOINT_INVALID_INDEX,         \
+  .is_ip4 = 0,                                 \
+  .port = 0,                                   \
+  .transport_proto = 0,                                \
+  .app_wrk_index = ENDPOINT_INVALID_INDEX,     \
+  .opaque = ENDPOINT_INVALID_INDEX,            \
+  .hostname = 0,                               \
+}
+
+#define session_endpoint_to_transport(_sep) ((transport_endpoint_t *)_sep)
+
+always_inline u8
+session_endpoint_fib_proto (session_endpoint_t * sep)
+{
+  return sep->is_ip4 ? FIB_PROTOCOL_IP4 : FIB_PROTOCOL_IP6;
+}
 
 #endif /* SRC_VNET_SESSION_STREAM_SESSION_H_ */