datapath/compat.h

   1 /*
   2  * Copyright (c) 2007-2015 Nicira, Inc.
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of version 2 of the GNU General Public
   6  * License as published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it will be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  11  * General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with this program; if not, write to the Free Software
  15  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  16  * 02110-1301, USA
  17  */
  18
  19 #ifndef COMPAT_H
  20 #define COMPAT_H 1
  21
  22 #include <linux/in.h>
  23 #include <linux/in_route.h>
  24 #include <linux/netlink.h>
  25 #include <net/ip.h>
  26 #include <net/route.h>
  27 #include <net/xfrm.h>
  28 #include <net/netfilter/ipv6/nf_defrag_ipv6.h>
  29 #include <net/netfilter/nf_conntrack_count.h>
  30
  31 /* Fix grsecurity patch compilation issue. */
  32 #ifdef CONSTIFY_PLUGIN
  33 #include <linux/cache.h>
  34 #undef __read_mostly
  35 #define __read_mostly
  36 #endif
  37
  38 /* Even though vanilla 3.10 kernel has grp->id, RHEL 7 kernel is missing
  39  * this field. */
  40 #ifdef HAVE_GENL_MULTICAST_GROUP_WITH_ID
  41 #define GROUP_ID(grp)   ((grp)->id)
  42 #else
  43 #define GROUP_ID(grp)   0
  44 #endif
  45
  46 #ifdef HAVE_NF_IPV6_OPS_FRAGMENT
  47 static inline int __init ip6_output_init(void) { return 0; }
  48 static inline void ip6_output_exit(void) { }
  49 #else
  50 int __init ip6_output_init(void);
  51 void ip6_output_exit(void);
  52 #endif
  53
  54 static inline int __init compat_init(void)
  55 {
  56         int err;
  57
  58         err = ipfrag_init();
  59         if (err)
  60                 return err;
  61
  62         err = nf_ct_frag6_init();
  63         if (err)
  64                 goto error_ipfrag_exit;
  65
  66         err = ip6_output_init();
  67         if (err)
  68                 goto error_frag6_exit;
  69
  70         err = rpl_nf_conncount_modinit();
  71         if (err)
  72                 goto error_nf_conncount_exit;
  73
  74         return 0;
  75
  76 error_nf_conncount_exit:
  77         rpl_nf_conncount_modexit();
  78 error_frag6_exit:
  79         nf_ct_frag6_cleanup();
  80 error_ipfrag_exit:
  81         rpl_ipfrag_fini();
  82         return err;
  83 }
  84 static inline void compat_exit(void)
  85 {
  86         rpl_nf_conncount_modexit();
  87         ip6_output_exit();
  88         nf_ct_frag6_cleanup();
  89         rpl_ipfrag_fini();
  90 }
  91
  92 #endif /* compat.h */