target/linux/generic/backport-5.10/610-v5.13-58-netfilter-flowtable-Add-FLOW_OFFLOAD_XMIT_UNSPEC-xmi.patch

   1 From 78ed0a9bc6db76f8e5f5f4cb0d2b2f0d1bb21b24 Mon Sep 17 00:00:00 2001
   2 From: Roi Dayan <roid@nvidia.com>
   3 Date: Tue, 13 Apr 2021 11:06:05 +0300
   4 Subject: [PATCH] netfilter: flowtable: Add FLOW_OFFLOAD_XMIT_UNSPEC xmit type
   5
   6 It could be xmit type was not set and would default to FLOW_OFFLOAD_XMIT_NEIGH
   7 and in this type the gc expect to have a route info.
   8 Fix that by adding FLOW_OFFLOAD_XMIT_UNSPEC which defaults to 0.
   9
  10 Fixes: 8b9229d15877 ("netfilter: flowtable: dst_check() from garbage collector path")
  11 Signed-off-by: Roi Dayan <roid@nvidia.com>
  12 Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
  13 ---
  14  include/net/netfilter/nf_flow_table.h | 3 ++-
  15  net/netfilter/nf_flow_table_core.c    | 3 +++
  16  2 files changed, 5 insertions(+), 1 deletion(-)
  17
  18 --- a/include/net/netfilter/nf_flow_table.h
  19 +++ b/include/net/netfilter/nf_flow_table.h
  20 @@ -90,7 +90,8 @@ enum flow_offload_tuple_dir {
  21  #define FLOW_OFFLOAD_DIR_MAX   IP_CT_DIR_MAX
  22
  23  enum flow_offload_xmit_type {
  24 -       FLOW_OFFLOAD_XMIT_NEIGH         = 0,
  25 +       FLOW_OFFLOAD_XMIT_UNSPEC        = 0,
  26 +       FLOW_OFFLOAD_XMIT_NEIGH,
  27         FLOW_OFFLOAD_XMIT_XFRM,
  28         FLOW_OFFLOAD_XMIT_DIRECT,
  29  };
  30 --- a/net/netfilter/nf_flow_table_core.c
  31 +++ b/net/netfilter/nf_flow_table_core.c
  32 @@ -130,6 +130,9 @@ static int flow_offload_fill_route(struc
  33                 flow_tuple->dst_cache = dst;
  34                 flow_tuple->dst_cookie = flow_offload_dst_cookie(flow_tuple);
  35                 break;
  36 +       default:
  37 +               WARN_ON_ONCE(1);
  38 +               break;
  39         }
  40         flow_tuple->xmit_type = route->tuple[dir].xmit_type;
  41