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[PATCH 06/11] doc: document msgh_protected_payload

From: Justus Winter
Subject: [PATCH 06/11] doc: document msgh_protected_payload
Date: Mon, 17 Feb 2014 18:20:56 +0100

* doc/mach.texi (Message Format): Document msgh_protected_payload.
 doc/mach.texi | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/doc/mach.texi b/doc/mach.texi
index 67c5fe9..251c290 100644
--- a/doc/mach.texi
+++ b/doc/mach.texi
@@ -1330,6 +1330,15 @@ which is conventionally used as a reply port by the 
recipient of the
 message.  The field must carry a send right, a send-once right,
 @code{MACH_PORT_NULL}, or @code{MACH_PORT_DEAD}.
+@item mach_port_t msgh_protected_payload
+The @code{msgh_protected_payload} field carries a payload that is set
+by the kernel during message delivery.  The payload is an opaque
+identifier that can be used by the receiver to lookup the associated
+data structure.
+It is only valid in received messages.  See @ref{Message Receive} for
+further information.
 @item mach_port_seqno_t msgh_seqno
 The @code{msgh_seqno} field provides a sequence number for the message.
 It is only valid in received messages; its value in sent messages is

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