1 files changed, 71 insertions, 0 deletions
diff --git a/include/rxrpc/message.h b/include/rxrpc/message.h
new file mode 100644
index 000000000000..3a59df6870b2
--- /dev/null
+++ b/include/rxrpc/message.h
@@ -0,0 +1,71 @@
+/* message.h: Rx message caching
+ *
+ * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#ifndef _LINUX_RXRPC_MESSAGE_H
+#define _LINUX_RXRPC_MESSAGE_H
+
+#include <rxrpc/packet.h>
+
+/*****************************************************************************/
+/*
+ * Rx message record
+ */
+struct rxrpc_message
+{
+	atomic_t		usage;
+	struct list_head	link;		/* list link */
+	struct timeval		stamp;		/* time received or last sent */
+	rxrpc_seq_t		seq;		/* message sequence number */
+
+	int			state;		/* the state the message is currently in */
+#define RXRPC_MSG_PREPARED	0
+#define RXRPC_MSG_SENT		1
+#define RXRPC_MSG_ACKED		2		/* provisionally ACK'd */
+#define RXRPC_MSG_DONE		3		/* definitively ACK'd (msg->seq<ack.firstPacket) */
+#define RXRPC_MSG_RECEIVED	4
+#define RXRPC_MSG_ERROR		-1
+	char			rttdone;	/* used for RTT */
+
+	struct rxrpc_transport	*trans;		/* transport received through */
+	struct rxrpc_connection	*conn;		/* connection received over */
+	struct sk_buff		*pkt;		/* received packet */
+	off_t			offset;		/* offset into pkt of next byte of data */
+
+	struct rxrpc_header	hdr;		/* message header */
+
+	int			dcount;		/* data part count */
+	size_t			dsize;		/* data size */
+#define RXRPC_MSG_MAX_IOCS 8
+	struct kvec		data[RXRPC_MSG_MAX_IOCS]; /* message data */
+	unsigned long		dfree;		/* bit mask indicating kfree(data[x]) if T */
+};
+
+#define rxrpc_get_message(M) do { atomic_inc(&(M)->usage); } while(0)
+
+extern void __rxrpc_put_message(struct rxrpc_message *msg);
+static inline void rxrpc_put_message(struct rxrpc_message *msg)
+{
+	BUG_ON(atomic_read(&msg->usage)<=0);
+	if (atomic_dec_and_test(&msg->usage))
+		__rxrpc_put_message(msg);
+}
+
+extern int rxrpc_conn_newmsg(struct rxrpc_connection *conn,
+			     struct rxrpc_call *call,
+			     uint8_t type,
+			     int count,
+			     struct kvec *diov,
+			     int alloc_flags,
+			     struct rxrpc_message **_msg);
+
+extern int rxrpc_conn_sendmsg(struct rxrpc_connection *conn, struct rxrpc_message *msg);
+
+#endif /* _LINUX_RXRPC_MESSAGE_H */