include/net/caif/caif_device.h

   1 /*
   2  * Copyright (C) ST-Ericsson AB 2010
   3  * Author:      Sjur Brendeland/ sjur.brandeland@stericsson.com
   4  * License terms: GNU General Public License (GPL) version 2
   5  */
   6
   7 #ifndef CAIF_DEVICE_H_
   8 #define CAIF_DEVICE_H_
   9 #include <linux/kernel.h>
  10 #include <linux/net.h>
  11 #include <linux/netdevice.h>
  12 #include <linux/caif/caif_socket.h>
  13 #include <net/caif/caif_device.h>
  14
  15 /**
  16  * struct caif_dev_common - data shared between CAIF drivers and stack.
  17  * @flowctrl:           Flow Control callback function. This function is
  18  *                      supplied by CAIF Core Stack and is used by CAIF
  19  *                      Link Layer to send flow-stop to CAIF Core.
  20  *                      The flow information will be distributed to all
  21  *                      clients of CAIF.
  22  *
  23  * @link_select:        Profile of device, either high-bandwidth or
  24  *                      low-latency. This member is set by CAIF Link
  25  *                      Layer Device in order to indicate if this device
  26  *                      is a high bandwidth or low latency device.
  27  *
  28  * @use_frag:           CAIF Frames may be fragmented.
  29  *                      Is set by CAIF Link Layer in order to indicate if the
  30  *                      interface receives fragmented frames that must be
  31  *                      assembled by CAIF Core Layer.
  32  *
  33  * @use_fcs:            Indicate if Frame CheckSum (fcs) is used.
  34  *                      Is set if the physical interface is
  35  *                      using Frame Checksum on the CAIF Frames.
  36  *
  37  * @use_stx:            Indicate STart of frame eXtension (stx) in use.
  38  *                      Is set if the CAIF Link Layer expects
  39  *                      CAIF Frames to start with the STX byte.
  40  *
  41  * This structure is shared between the CAIF drivers and the CAIF stack.
  42  * It is used by the device to register its behavior.
  43  * CAIF Core layer must set the member flowctrl in order to supply
  44  * CAIF Link Layer with the flow control function.
  45  *
  46  */
  47  struct caif_dev_common {
  48         void (*flowctrl)(struct net_device *net, int on);
  49         enum caif_link_selector link_select;
  50         int use_frag;
  51         int use_fcs;
  52         int use_stx;
  53 };
  54
  55 #endif  /* CAIF_DEVICE_H_ */