target/linux/generic/backport-4.19/315-v4.15-netfilter-conntrack-move-nf_ct_netns_-get-put-to-cor.patch

   1 From: Pablo Neira Ayuso <pablo@netfilter.org>
   2 Date: Fri, 3 Nov 2017 16:26:32 +0100
   3 Subject: [PATCH] netfilter: conntrack: move nf_ct_netns_{get,put}() to core
   4
   5 So we can call this from other expression that need conntrack in place
   6 to work.
   7
   8 Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
   9 Acked-by: Florian Westphal <fw@strlen.de>
  10 ---
  11
  12 --- a/net/netfilter/nf_conntrack_proto.c
  13 +++ b/net/netfilter/nf_conntrack_proto.c
  14 @@ -125,7 +125,7 @@ void nf_ct_l3proto_module_put(unsigned s
  15  }
  16  EXPORT_SYMBOL_GPL(nf_ct_l3proto_module_put);
  17
  18 -int nf_ct_netns_get(struct net *net, u8 nfproto)
  19 +static int nf_ct_netns_do_get(struct net *net, u8 nfproto)
  20  {
  21         const struct nf_conntrack_l3proto *l3proto;
  22         int ret;
  23 @@ -150,9 +150,33 @@ int nf_ct_netns_get(struct net *net, u8
  24
  25         return ret;
  26  }
  27 +
  28 +int nf_ct_netns_get(struct net *net, u8 nfproto)
  29 +{
  30 +       int err;
  31 +
  32 +       if (nfproto == NFPROTO_INET) {
  33 +               err = nf_ct_netns_do_get(net, NFPROTO_IPV4);
  34 +               if (err < 0)
  35 +                       goto err1;
  36 +               err = nf_ct_netns_do_get(net, NFPROTO_IPV6);
  37 +               if (err < 0)
  38 +                       goto err2;
  39 +       } else {
  40 +               err = nf_ct_netns_do_get(net, nfproto);
  41 +               if (err < 0)
  42 +                       goto err1;
  43 +       }
  44 +       return 0;
  45 +
  46 +err2:
  47 +       nf_ct_netns_put(net, NFPROTO_IPV4);
  48 +err1:
  49 +       return err;
  50 +}
  51  EXPORT_SYMBOL_GPL(nf_ct_netns_get);
  52
  53 -void nf_ct_netns_put(struct net *net, u8 nfproto)
  54 +static void nf_ct_netns_do_put(struct net *net, u8 nfproto)
  55  {
  56         const struct nf_conntrack_l3proto *l3proto;
  57
  58 @@ -171,6 +195,15 @@ void nf_ct_netns_put(struct net *net, u8
  59
  60         nf_ct_l3proto_module_put(nfproto);
  61  }
  62 +
  63 +void nf_ct_netns_put(struct net *net, uint8_t nfproto)
  64 +{
  65 +       if (nfproto == NFPROTO_INET) {
  66 +               nf_ct_netns_do_put(net, NFPROTO_IPV4);
  67 +               nf_ct_netns_do_put(net, NFPROTO_IPV6);
  68 +       } else
  69 +               nf_ct_netns_do_put(net, nfproto);
  70 +}
  71  EXPORT_SYMBOL_GPL(nf_ct_netns_put);
  72
  73  const struct nf_conntrack_l4proto *
  74 --- a/net/netfilter/nft_ct.c
  75 +++ b/net/netfilter/nft_ct.c
  76 @@ -312,39 +312,6 @@ static const struct nla_policy nft_ct_po
  77         [NFTA_CT_SREG]          = { .type = NLA_U32 },
  78  };
  79
  80 -static int nft_ct_netns_get(struct net *net, uint8_t family)
  81 -{
  82 -       int err;
  83 -
  84 -       if (family == NFPROTO_INET) {
  85 -               err = nf_ct_netns_get(net, NFPROTO_IPV4);
  86 -               if (err < 0)
  87 -                       goto err1;
  88 -               err = nf_ct_netns_get(net, NFPROTO_IPV6);
  89 -               if (err < 0)
  90 -                       goto err2;
  91 -       } else {
  92 -               err = nf_ct_netns_get(net, family);
  93 -               if (err < 0)
  94 -                       goto err1;
  95 -       }
  96 -       return 0;
  97 -
  98 -err2:
  99 -       nf_ct_netns_put(net, NFPROTO_IPV4);
 100 -err1:
 101 -       return err;
 102 -}
 103 -
 104 -static void nft_ct_netns_put(struct net *net, uint8_t family)
 105 -{
 106 -       if (family == NFPROTO_INET) {
 107 -               nf_ct_netns_put(net, NFPROTO_IPV4);
 108 -               nf_ct_netns_put(net, NFPROTO_IPV6);
 109 -       } else
 110 -               nf_ct_netns_put(net, family);
 111 -}
 112 -
 113  #ifdef CONFIG_NF_CONNTRACK_ZONES
 114  static void nft_ct_tmpl_put_pcpu(void)
 115  {
 116 @@ -489,7 +456,7 @@ static int nft_ct_get_init(const struct
 117         if (err < 0)
 118                 return err;
 119
 120 -       err = nft_ct_netns_get(ctx->net, ctx->afi->family);
 121 +       err = nf_ct_netns_get(ctx->net, ctx->afi->family);
 122         if (err < 0)
 123                 return err;
 124
 125 @@ -583,7 +550,7 @@ static int nft_ct_set_init(const struct
 126         if (err < 0)
 127                 goto err1;
 128
 129 -       err = nft_ct_netns_get(ctx->net, ctx->afi->family);
 130 +       err = nf_ct_netns_get(ctx->net, ctx->afi->family);
 131         if (err < 0)
 132                 goto err1;
 133
 134 @@ -606,7 +573,7 @@ static void nft_ct_set_destroy(const str
 135         struct nft_ct *priv = nft_expr_priv(expr);
 136
 137         __nft_ct_set_destroy(ctx, priv);
 138 -       nft_ct_netns_put(ctx->net, ctx->afi->family);
 139 +       nf_ct_netns_put(ctx->net, ctx->afi->family);
 140  }
 141
 142  static int nft_ct_get_dump(struct sk_buff *skb, const struct nft_expr *expr)