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       1  /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
       2  /*
       3   * Kernel Connection Multiplexor
       4   *
       5   * Copyright (c) 2016 Tom Herbert <tom@herbertland.com>
       6   *
       7   * This program is free software; you can redistribute it and/or modify
       8   * it under the terms of the GNU General Public License version 2
       9   * as published by the Free Software Foundation.
      10   *
      11   * User API to clone KCM sockets and attach transport socket to a KCM
      12   * multiplexor.
      13   */
      14  
      15  #ifndef KCM_KERNEL_H
      16  #define KCM_KERNEL_H
      17  
      18  struct kcm_attach {
      19  	int fd;
      20  	int bpf_fd;
      21  };
      22  
      23  struct kcm_unattach {
      24  	int fd;
      25  };
      26  
      27  struct kcm_clone {
      28  	int fd;
      29  };
      30  
      31  #define SIOCKCMATTACH	(SIOCPROTOPRIVATE + 0)
      32  #define SIOCKCMUNATTACH	(SIOCPROTOPRIVATE + 1)
      33  #define SIOCKCMCLONE	(SIOCPROTOPRIVATE + 2)
      34  
      35  #define KCMPROTO_CONNECTED	0
      36  
      37  /* Socket options */
      38  #define KCM_RECV_DISABLE	1
      39  
      40  #endif
      41