#ifndef NET_COMPAT_H
  #define NET_COMPAT_H

  struct sock;

  #if defined(CONFIG_COMPAT)
  
  #include <linux/compat.h>
  
  struct compat_msghdr {
  	compat_uptr_t	msg_name;	/* void * */
  	compat_int_t	msg_namelen;
  	compat_uptr_t	msg_iov;	/* struct compat_iovec * */
  	compat_size_t	msg_iovlen;
  	compat_uptr_t	msg_control;	/* void * */
  	compat_size_t	msg_controllen;
  	compat_uint_t	msg_flags;
  };

  struct compat_mmsghdr {
  	struct compat_msghdr msg_hdr;
  	compat_uint_t        msg_len;
  };

  struct compat_cmsghdr {
  	compat_size_t	cmsg_len;
  	compat_int_t	cmsg_level;
  	compat_int_t	cmsg_type;
  };

  int compat_sock_get_timestamp(struct sock *, struct timeval __user *);
  int compat_sock_get_timestampns(struct sock *, struct timespec __user *);

  #else /* defined(CONFIG_COMPAT) */

  /*
   * To avoid compiler warnings:
   */
  #define compat_msghdr	msghdr
  #define compat_mmsghdr	mmsghdr

  #endif /* defined(CONFIG_COMPAT) */

  int get_compat_msghdr(struct msghdr *, struct compat_msghdr __user *,

  		      struct sockaddr __user **, struct iovec **);

  struct sock_fprog __user *get_compat_bpf_fprog(char __user *optval);

  asmlinkage long compat_sys_sendmsg(int, struct compat_msghdr __user *,
  				   unsigned int);
  asmlinkage long compat_sys_sendmmsg(int, struct compat_mmsghdr __user *,
  				    unsigned int, unsigned int);
  asmlinkage long compat_sys_recvmsg(int, struct compat_msghdr __user *,
  				   unsigned int);
  asmlinkage long compat_sys_recvmmsg(int, struct compat_mmsghdr __user *,
  				    unsigned int, unsigned int,
  				    struct compat_timespec __user *);
  asmlinkage long compat_sys_getsockopt(int, int, int, char __user *,
  				      int __user *);
  int put_cmsg_compat(struct msghdr*, int, int, int, void *);
  
  int cmsghdr_from_user_compat_to_kern(struct msghdr *, struct sock *,
  				     unsigned char *, int);
  
  int compat_mc_setsockopt(struct sock *, int, int, char __user *, unsigned int,
  			 int (*)(struct sock *, int, int, char __user *,
  				 unsigned int));
  int compat_mc_getsockopt(struct sock *, int, int, char __user *, int __user *,
  			 int (*)(struct sock *, int, int, char __user *,
  				 int __user *));

  #endif /* NET_COMPAT_H */