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From: Felix Fietkau <nbd@nbd.name>
Date: Fri, 27 Apr 2018 14:42:14 +0200
Subject: [PATCH] netfilter: nf_flow_table: rework private driver data

Move the timeout out of the union, since it can be shared between the
driver and the stack. Add a private pointer that the driver can use to
point to its own data structures

Signed-off-by: Felix Fietkau <nbd@nbd.name>
---

--- a/include/net/netfilter/nf_flow_table.h
+++ b/include/net/netfilter/nf_flow_table.h
@@ -81,9 +81,10 @@ struct flow_offload_tuple_rhash {
 struct flow_offload {
        struct flow_offload_tuple_rhash         tuplehash[FLOW_OFFLOAD_DIR_MAX];
        u32                                     flags;
+       u32                                     timeout;
        union {
                /* Your private driver data here. */
-               u32             timeout;
+               void *priv;
        };
 };