target/linux/generic/backport-4.19/298-v4.16-netfilter-core-pass-family-as-parameter-to-nf_remove.patch

   1 From 30259408118f550f5969fda19c0d67020d21eda8 Mon Sep 17 00:00:00 2001
   2 From: Pablo Neira Ayuso <pablo@netfilter.org>
   3 Date: Sat, 9 Dec 2017 15:26:37 +0100
   4 Subject: [PATCH 10/11] netfilter: core: pass family as parameter to
   5  nf_remove_net_hook()
   6
   7 So static_key_slow_dec applies to the family behind NFPROTO_INET.
   8
   9 Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
  10 ---
  11  net/netfilter/core.c | 10 +++++-----
  12  1 file changed, 5 insertions(+), 5 deletions(-)
  13
  14 --- a/net/netfilter/core.c
  15 +++ b/net/netfilter/core.c
  16 @@ -365,7 +365,7 @@ EXPORT_SYMBOL(nf_register_net_hook);
  17   * Therefore replace the to-be-removed hook with a dummy hook.
  18   */
  19  static void nf_remove_net_hook(struct nf_hook_entries *old,
  20 -                              const struct nf_hook_ops *unreg)
  21 +                              const struct nf_hook_ops *unreg, int pf)
  22  {
  23         struct nf_hook_ops **orig_ops;
  24         bool found = false;
  25 @@ -383,14 +383,14 @@ static void nf_remove_net_hook(struct nf
  26
  27         if (found) {
  28  #ifdef CONFIG_NETFILTER_INGRESS
  29 -               if (unreg->pf == NFPROTO_NETDEV && unreg->hooknum == NF_NETDEV_INGRESS)
  30 +               if (pf == NFPROTO_NETDEV && unreg->hooknum == NF_NETDEV_INGRESS)
  31                         net_dec_ingress_queue();
  32  #endif
  33  #ifdef HAVE_JUMP_LABEL
  34 -               static_key_slow_dec(&nf_hooks_needed[unreg->pf][unreg->hooknum]);
  35 +               static_key_slow_dec(&nf_hooks_needed[pf][unreg->hooknum]);
  36  #endif
  37         } else {
  38 -               WARN_ONCE(1, "hook not found, pf %d num %d", unreg->pf, unreg->hooknum);
  39 +               WARN_ONCE(1, "hook not found, pf %d num %d", pf, unreg->hooknum);
  40         }
  41  }
  42
  43 @@ -411,7 +411,7 @@ void nf_unregister_net_hook(struct net *
  44                 return;
  45         }
  46
  47 -       nf_remove_net_hook(p, reg);
  48 +       nf_remove_net_hook(p, reg, reg->pf);
  49
  50         p = __nf_hook_entries_try_shrink(pp);
  51         mutex_unlock(&nf_hook_mutex);