datapath/linux/compat/include/net/netfilter/nf_conntrack_core.h

   1 #ifndef _NF_CONNTRACK_CORE_WRAPPER_H
   2 #define _NF_CONNTRACK_CORE_WRAPPER_H
   3
   4 #include_next <net/netfilter/nf_conntrack_core.h>
   5
   6 #ifndef HAVE_NF_CT_TMPL_ALLOC_TAKES_STRUCT_ZONE
   7
   8 #include <net/netfilter/nf_conntrack_zones.h>
   9
  10 #define nf_ct_tmpl_alloc rpl_nf_ct_tmpl_alloc
  11 /* Released via destroy_conntrack() */
  12 static inline struct nf_conn *
  13 nf_ct_tmpl_alloc(struct net *net, const struct nf_conntrack_zone *zone,
  14                  gfp_t flags)
  15 {
  16         struct nf_conn *tmpl;
  17
  18         tmpl = kzalloc(sizeof(*tmpl), flags);
  19         if (tmpl == NULL)
  20                 return NULL;
  21
  22         tmpl->status = IPS_TEMPLATE;
  23         write_pnet(&tmpl->ct_net, net);
  24
  25         if (nf_ct_zone_add(tmpl, flags, zone) < 0)
  26                 goto out_free;
  27
  28         atomic_set(&tmpl->ct_general.use, 0);
  29
  30         return tmpl;
  31 out_free:
  32         kfree(tmpl);
  33         return NULL;
  34 }
  35
  36 static void rpl_nf_ct_tmpl_free(struct nf_conn *tmpl)
  37 {
  38         nf_ct_ext_destroy(tmpl);
  39         nf_ct_ext_free(tmpl);
  40         kfree(tmpl);
  41 }
  42 #define nf_ct_tmpl_free rpl_nf_ct_tmpl_free
  43
  44 static inline struct nf_conntrack_tuple_hash *
  45 rpl_nf_conntrack_find_get(struct net *net,
  46                           const struct nf_conntrack_zone *zone,
  47                           const struct nf_conntrack_tuple *tuple)
  48 {
  49         return nf_conntrack_find_get(net, zone->id, tuple);
  50 }
  51 #define nf_conntrack_find_get rpl_nf_conntrack_find_get
  52 #endif /* HAVE_NF_CT_TMPL_ALLOC_TAKES_STRUCT_ZONE */
  53
  54 #ifndef HAVE_NF_CT_GET_TUPLEPR_TAKES_STRUCT_NET
  55 static inline bool rpl_nf_ct_get_tuple(const struct sk_buff *skb,
  56                                        unsigned int nhoff,
  57                                        unsigned int dataoff, u_int16_t l3num,
  58                                        u_int8_t protonum,
  59                                        struct net *net,
  60                                        struct nf_conntrack_tuple *tuple,
  61                                        const struct nf_conntrack_l3proto *l3proto,
  62                                        const struct nf_conntrack_l4proto *l4proto)
  63 {
  64         return nf_ct_get_tuple(skb, nhoff, dataoff, l3num, protonum, tuple,
  65                                l3proto, l4proto);
  66 }
  67 #define nf_ct_get_tuple rpl_nf_ct_get_tuple
  68 #endif /* HAVE_NF_CT_GET_TUPLEPR_TAKES_STRUCT_NET */
  69
  70 #ifdef HAVE_NF_CONN_TIMER
  71
  72 #ifndef HAVE_NF_CT_DELETE
  73 #include <net/netfilter/nf_conntrack_timestamp.h>
  74 #endif
  75
  76 static inline bool rpl_nf_ct_delete(struct nf_conn *ct, u32 portid, int report)
  77 {
  78         if (del_timer(&ct->timeout))
  79 #ifdef HAVE_NF_CT_DELETE
  80                 return nf_ct_delete(ct, portid, report);
  81 #else
  82         {
  83                 struct nf_conn_tstamp *tstamp;
  84
  85                 tstamp = nf_conn_tstamp_find(ct);
  86                 if (tstamp && tstamp->stop == 0)
  87                         tstamp->stop = ktime_to_ns(ktime_get_real());
  88
  89                 if (!test_bit(IPS_DYING_BIT, &ct->status) &&
  90                     unlikely(nf_conntrack_event(IPCT_DESTROY, ct) < 0)) {
  91                         /* destroy event was not delivered */
  92                         nf_ct_delete_from_lists(ct);
  93                         nf_ct_dying_timeout(ct);
  94                         return false;
  95                 }
  96                 set_bit(IPS_DYING_BIT, &ct->status);
  97                 nf_ct_delete_from_lists(ct);
  98                 nf_ct_put(ct);
  99                 return true;
 100         }
 101 #endif
 102         return false;
 103 }
 104 #define nf_ct_delete rpl_nf_ct_delete
 105 #endif /* HAVE_NF_CONN_TIMER */
 106
 107 #ifndef HAVE_NF_CONNTRACK_IN_TAKES_NF_HOOK_STATE
 108 static inline unsigned int
 109 rpl_nf_conntrack_in(struct sk_buff *skb, const struct nf_hook_state *state)
 110 {
 111         return nf_conntrack_in(state->net, state->pf, state->hook, skb);
 112 }
 113 #define nf_conntrack_in rpl_nf_conntrack_in
 114 #endif /* HAVE_NF_CONNTRACK_IN_TAKES_NF_HOOK_STATE */
 115
 116 #endif /* _NF_CONNTRACK_CORE_WRAPPER_H */