session tcp: infra for transports to send buffers
Type: feature
Add infra that allows transpors to enqueue pending buffers without the
need to build and manage their own pending frames. An important benefit
is the fact that buffer wire/tx ordering is ensured by session layer.
Change-Id: I764fd1693d610b321a1d0c84b648a314f14583db
Signed-off-by: Florin Coras <fcoras@cisco.com>
diff --git a/src/vnet/session/session.h b/src/vnet/session/session.h
index 1d3ae0c..f738f39 100644
--- a/src/vnet/session/session.h
+++ b/src/vnet/session/session.h
@@ -116,6 +116,12 @@
/** Peekers rw lock */
clib_rwlock_t peekers_rw_locks;
+ /** Vector of buffers to be sent */
+ u32 *pending_tx_buffers;
+
+ /** Vector of nexts for the pending tx buffers */
+ u16 *pending_tx_nexts;
+
#if SESSION_DEBUG
/** last event poll time by thread */
f64 last_event_poll;
@@ -611,6 +617,15 @@
int session_main_flush_enqueue_events (u8 proto, u32 thread_index);
int session_main_flush_all_enqueue_events (u8 transport_proto);
void session_flush_frames_main_thread (vlib_main_t * vm);
+
+always_inline void
+session_add_pending_tx_buffer (session_type_t st, u32 thread_index, u32 bi)
+{
+ session_worker_t *wrk = session_main_get_worker (thread_index);
+ vec_add1 (wrk->pending_tx_buffers, bi);
+ vec_add1 (wrk->pending_tx_nexts, session_main.session_type_to_next[st]);
+}
+
ssvm_private_t *session_main_get_evt_q_segment (void);
void session_node_enable_disable (u8 is_en);
clib_error_t *vnet_session_enable_disable (vlib_main_t * vm, u8 is_en);