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-rw-r--r--src/core/protocol.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/core/protocol.h b/src/core/protocol.h
index 01e3d11c..9b241138 100644
--- a/src/core/protocol.h
+++ b/src/core/protocol.h
@@ -127,10 +127,12 @@ struct nni_proto {
// These flags determine which operations make sense. We use them so that
// we can reject attempts to create notification fds for operations that make
-// no sense.
+// no sense. Also, we can detect raw mode, thereby providing handling for
+// that at the socket layer (NNG_PROTO_FLAG_RAW).
#define NNI_PROTO_FLAG_RCV 1 // Protocol can receive
#define NNI_PROTO_FLAG_SND 2 // Protocol can send
#define NNI_PROTO_FLAG_SNDRCV 3 // Protocol can both send & recv
+#define NNI_PROTO_FLAG_RAW 4 // Protocol is raw
// nni_proto_open is called by the protocol to create a socket instance
// with its ops vector. The intent is that applications will only see