netdev - Re: [PATCH net-next v2 1/1] netfilter: flowtable: Add FLOW_OFFLOAD_XMIT

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Date:   Tue, 13 Apr 2021 12:45:27 +0200
From:   Pablo Neira Ayuso <pablo@...filter.org>
To:     Roi Dayan <roid@...dia.com>
Cc:     netdev@...r.kernel.org, Oz Shlomo <ozsh@...dia.com>,
        Paul Blakey <paulb@...dia.com>,
        Saeed Mahameed <saeedm@...dia.com>
Subject: Re: [PATCH net-next v2 1/1] netfilter: flowtable: Add
 FLOW_OFFLOAD_XMIT_UNSPEC xmit type

On Tue, Apr 13, 2021 at 11:06:05AM +0300, Roi Dayan wrote:
> It could be xmit type was not set and would default to FLOW_OFFLOAD_XMIT_NEIGH
> and in this type the gc expect to have a route info.
> Fix that by adding FLOW_OFFLOAD_XMIT_UNSPEC which defaults to 0.

Applied, thanks.

diff --git a/net/netfilter/nf_flow_table_core.c b/net/netfilter/nf_flow_table_core.c
index 76573bae6664..39c02d1aeedf 100644
--- a/net/netfilter/nf_flow_table_core.c
+++ b/net/netfilter/nf_flow_table_core.c
@@ -130,6 +130,9 @@ static int flow_offload_fill_route(struct flow_offload *flow,
                flow_tuple->dst_cache = dst;
                flow_tuple->dst_cookie = flow_offload_dst_cookie(flow_tuple);
                break;
+       default:
+               WARN_ON_ONCE(1);
+               break;
        }
        flow_tuple->xmit_type = route->tuple[dir].xmit_type;

I have included this chunk to make gcc happy.

net/netfilter/nf_flow_table_core.c: In function ‘flow_offload_fill_route’:
net/netfilter/nf_flow_table_core.c:116:2: warning: enumeration value ‘FLOW_OFFLOAD_XMIT_UNSPEC’ not handled in switch [-Wswitch]
  116 |  switch (route->tuple[dir].xmit_type) {
      |  ^~~~~~