net/sunrpc/sunrpc.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /******************************************************************************
   3
   4 (c) 2008 NetApp.  All Rights Reserved.
   5
   6
   7 ******************************************************************************/
   8
   9 /*
  10  * Functions and macros used internally by RPC
  11  */
  12
  13 #ifndef _NET_SUNRPC_SUNRPC_H
  14 #define _NET_SUNRPC_SUNRPC_H
  15
  16 #include <linux/net.h>
  17
  18 /*
  19  * Header for dynamically allocated rpc buffers.
  20  */
  21 struct rpc_buffer {
  22         size_t  len;
  23         char    data[];
  24 };
  25
  26 static inline int sock_is_loopback(struct sock *sk)
  27 {
  28         struct dst_entry *dst;
  29         int loopback = 0;
  30         rcu_read_lock();
  31         dst = rcu_dereference(sk->sk_dst_cache);
  32         if (dst && dst->dev &&
  33             (dst->dev->features & NETIF_F_LOOPBACK))
  34                 loopback = 1;
  35         rcu_read_unlock();
  36         return loopback;
  37 }
  38
  39 struct svc_serv;
  40 struct svc_rqst;
  41 int rpc_clients_notifier_register(void);
  42 void rpc_clients_notifier_unregister(void);
  43 void auth_domain_cleanup(void);
  44 void svc_sock_update_bufs(struct svc_serv *serv);
  45 enum svc_auth_status svc_authenticate(struct svc_rqst *rqstp);
  46 #endif /* _NET_SUNRPC_SUNRPC_H */