X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=include%2Flinux%2Fusb%2Fcdc.h;h=c1d039cb855e446529d9559edd24b0ea96709f8e;hb=3bfbf32b6fe5e2d4605bc7ee99d1844b572662c2;hp=03541cbf219be321a185efed402fe775142baadb;hpb=e7eb046a246e56f964804fea0e103fcbcf2a564e;p=oweals%2Fu-boot.git

diff --git a/include/linux/usb/cdc.h b/include/linux/usb/cdc.h
index 03541cbf21..c1d039cb85 100644
--- a/include/linux/usb/cdc.h
+++ b/include/linux/usb/cdc.h
@@ -9,8 +9,6 @@
  *                      Remy Bohmer <linux@bohmer.net>
  */
 
-
-
 #define USB_CDC_SUBCLASS_ACM			0x02
 #define USB_CDC_SUBCLASS_ETHERNET		0x06
 #define USB_CDC_SUBCLASS_WHCM			0x08
@@ -160,6 +158,9 @@ struct usb_cdc_mdlm_detail_desc {
  *
  * section 3.6.2.1 table 4 has the ACM profile, for modems.
  * section 3.8.2 table 10 has the ethernet profile.
+ *
+ * Microsoft's RNDIS stack for Ethernet is a vendor-specific CDC ACM variant,
+ * heavily dependent on the encapsulated (proprietary) command mechanism.
  */
 
 #define USB_CDC_SEND_ENCAPSULATED_COMMAND	0x00
@@ -199,14 +200,14 @@ struct usb_cdc_line_coding {
 #define	USB_CDC_PACKET_TYPE_BROADCAST		(1 << 3)
 #define	USB_CDC_PACKET_TYPE_MULTICAST		(1 << 4) /* filtered */
 
-
 /*-------------------------------------------------------------------------*/
 
 /*
  * Class-Specific Notifications (6.3) sent by interrupt transfers
  *
  * section 3.8.2 table 11 of the CDC spec lists Ethernet notifications
- * section 3.6.2.1 table 5 specifies ACM notifications
+ * section 3.6.2.1 table 5 specifies ACM notifications, accepted by RNDIS
+ * RNDIS also defines its own bit-incompatible notifications
  */
 
 #define USB_CDC_NOTIFY_NETWORK_CONNECTION	0x00
@@ -221,4 +222,3 @@ struct usb_cdc_notification {
 	__le16	wIndex;
 	__le16	wLength;
 } __attribute__ ((packed));
-