API/UCT: added UCT_IFACE_FLAG_EP_KEEPALIVE caps

- added iface capability UCT_IFACE_FLAG_EP_KEEPALIVE to identify EP's which can provide keepalive functionality without UCX involving
kunpengcompute · Nov 25, 2020 · 73e2941 · 73e2941
1 parent 30ddc8c
commit 73e2941
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/src/uct/api/uct.h b/src/uct/api/uct.h
@@ -412,6 +412,13 @@ typedef enum uct_atomic_op {
                                                        and it may also be invoked when uct_worker_progress()
                                                        is called. */
 
+        /* Keepalive */
+#define UCT_IFACE_FLAG_EP_KEEPALIVE   UCS_BIT(46) /**< Transport endpoint has built-in keepalive feature,
+                                                       which guarantees the error callback on the transport
+                                                       interface will be called if the communication
+                                                       channel with remote peer is broken, even if there
+                                                       are no outstanding send operations */
+
         /* Tag matching operations */
 #define UCT_IFACE_FLAG_TAG_EAGER_SHORT UCS_BIT(50) /**< Hardware tag matching short eager support */
 #define UCT_IFACE_FLAG_TAG_EAGER_BCOPY UCS_BIT(51) /**< Hardware tag matching bcopy eager support */