svn commit: r307496 - stable/11/sys/net

[Sepherosa Ziehau]

Author: sephe
Date: Mon Oct 17 08:03:15 2016
New Revision: 307496
URL: https://svnweb.freebsd.org/changeset/base/307496

Log:
  MFC 305277,305278
  
  305277
      net/rndis: Add comment for rndis_comp_hdr
  
      Reviewed by:    hps
      Sponsored by:   Microsoft
      Differential Revision:  https://reviews.freebsd.org/D7738
  
  305278
      net/rndis: Define common message header for RNDIS messages.
  
      And avoid RNDIS_HEADER_OFFSET hardcoding.
  
      Reviewed by:    hps
      Sponsored by:   Microsoft
      Differential Revision:  https://reviews.freebsd.org/D7739

Modified:
  stable/11/sys/net/rndis.h
Directory Properties:
  stable/11/   (props changed)

Modified: stable/11/sys/net/rndis.h
==============================================================================
--- stable/11/sys/net/rndis.h	Mon Oct 17 07:46:13 2016	(r307495)
+++ stable/11/sys/net/rndis.h	Mon Oct 17 08:03:15 2016	(r307496)
@@ -93,6 +93,14 @@
 #define	RNDIS_DF_CONNECTION_ORIENTED	0x00000002
 
 /*
+ * Common RNDIS message header.
+ */
+struct rndis_msghdr {
+	uint32_t rm_type;
+	uint32_t rm_len;
+};
+
+/*
  * RNDIS data message
  */
 #define	REMOTE_NDIS_PACKET_MSG		0x00000001
@@ -147,6 +155,12 @@ struct rndis_pktinfo {
 /*
  * RNDIS control messages
  */
+
+/*
+ * Common header for RNDIS completion messages.
+ *
+ * NOTE: It does not apply to REMOTE_NDIS_RESET_CMPLT.
+ */
 struct rndis_comp_hdr {
 	uint32_t rm_type;
 	uint32_t rm_len;
@@ -316,7 +330,7 @@ struct rndis_keepalive_comp {
 #define	NDIS_PACKET_TYPE_MAC_FRAME		0x00008000
 
 /* RNDIS offsets */
-#define	RNDIS_HEADER_OFFSET	8	/* bytes */
+#define	RNDIS_HEADER_OFFSET	((uint32_t)sizeof(struct rndis_msghdr))
 #define	RNDIS_DATA_OFFSET	\
     ((uint32_t)(sizeof(struct rndis_packet_msg) - RNDIS_HEADER_OFFSET))