fs/smb/client/cifs_swn.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Witness Service client for CIFS
   4  *
   5  * Copyright (c) 2020 Samuel Cabrero <scabrero@suse.de>
   6  */
   7
   8 #ifndef _CIFS_SWN_H
   9 #define _CIFS_SWN_H
  10 #include "cifsglob.h"
  11
  12 struct cifs_tcon;
  13 struct sk_buff;
  14 struct genl_info;
  15
  16 #ifdef CONFIG_CIFS_SWN_UPCALL
  17 extern int cifs_swn_register(struct cifs_tcon *tcon);
  18
  19 extern int cifs_swn_unregister(struct cifs_tcon *tcon);
  20
  21 extern int cifs_swn_notify(struct sk_buff *skb, struct genl_info *info);
  22
  23 extern void cifs_swn_dump(struct seq_file *m);
  24
  25 extern void cifs_swn_check(void);
  26
  27 static inline bool cifs_swn_set_server_dstaddr(struct TCP_Server_Info *server)
  28 {
  29         if (server->use_swn_dstaddr) {
  30                 server->dstaddr = server->swn_dstaddr;
  31                 return true;
  32         }
  33         return false;
  34 }
  35
  36 static inline void cifs_swn_reset_server_dstaddr(struct TCP_Server_Info *server)
  37 {
  38         server->use_swn_dstaddr = false;
  39 }
  40
  41 #else
  42
  43 static inline int cifs_swn_register(struct cifs_tcon *tcon) { return 0; }
  44 static inline int cifs_swn_unregister(struct cifs_tcon *tcon) { return 0; }
  45 static inline int cifs_swn_notify(struct sk_buff *s, struct genl_info *i) { return 0; }
  46 static inline void cifs_swn_dump(struct seq_file *m) {}
  47 static inline void cifs_swn_check(void) {}
  48 static inline bool cifs_swn_set_server_dstaddr(struct TCP_Server_Info *server) { return false; }
  49 static inline void cifs_swn_reset_server_dstaddr(struct TCP_Server_Info *server) {}
  50
  51 #endif /* CONFIG_CIFS_SWN_UPCALL */
  52 #endif /* _CIFS_SWN_H */