#ifndef __QRTR_H_
  #define __QRTR_H_
  
  #include <linux/types.h>
  
  struct sk_buff;
  
  /* endpoint node id auto assignment */
  #define QRTR_EP_NID_AUTO (-1)
  
  /**
   * struct qrtr_endpoint - endpoint handle
   * @xmit: Callback for outgoing packets
   *
   * The socket buffer passed to the xmit function becomes owned by the endpoint
   * driver.  As such, when the driver is done with the buffer, it should
   * call kfree_skb() on failure, or consume_skb() on success.
   */
  struct qrtr_endpoint {
  	int (*xmit)(struct qrtr_endpoint *ep, struct sk_buff *skb);
  	/* private: not for endpoint use */
  	struct qrtr_node *node;
  };
  
  int qrtr_endpoint_register(struct qrtr_endpoint *ep, unsigned int nid);
  
  void qrtr_endpoint_unregister(struct qrtr_endpoint *ep);
  
  int qrtr_endpoint_post(struct qrtr_endpoint *ep, const void *data, size_t len);
  
  #endif