target/linux/generic/backport-5.10/610-v5.13-29-netfilter-flowtable-support-for-FLOW_ACTION_PPPOE_PU.patch

   1 From: Pablo Neira Ayuso <pablo@netfilter.org>
   2 Date: Wed, 24 Mar 2021 02:30:50 +0100
   3 Subject: [PATCH] netfilter: flowtable: support for
   4  FLOW_ACTION_PPPOE_PUSH
   5
   6 Add a PPPoE push action if layer 2 protocol is ETH_P_PPP_SES to add
   7 PPPoE flowtable hardware offload support.
   8
   9 Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
  10 ---
  11
  12 --- a/net/netfilter/nf_flow_table_offload.c
  13 +++ b/net/netfilter/nf_flow_table_offload.c
  14 @@ -600,9 +600,18 @@ nf_flow_rule_route_common(struct net *ne
  15                         continue;
  16
  17                 entry = flow_action_entry_next(flow_rule);
  18 -               entry->id = FLOW_ACTION_VLAN_PUSH;
  19 -               entry->vlan.vid = other_tuple->encap[i].id;
  20 -               entry->vlan.proto = other_tuple->encap[i].proto;
  21 +
  22 +               switch (other_tuple->encap[i].proto) {
  23 +               case htons(ETH_P_PPP_SES):
  24 +                       entry->id = FLOW_ACTION_PPPOE_PUSH;
  25 +                       entry->pppoe.sid = other_tuple->encap[i].id;
  26 +                       break;
  27 +               case htons(ETH_P_8021Q):
  28 +                       entry->id = FLOW_ACTION_VLAN_PUSH;
  29 +                       entry->vlan.vid = other_tuple->encap[i].id;
  30 +                       entry->vlan.proto = other_tuple->encap[i].proto;
  31 +                       break;
  32 +               }
  33         }
  34
  35         return 0;