flow_keys_dissector_symmetric is useful to derive a symmetric hash
and to know its source such as IPv4, IPv6, TCP, and UDP.

Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Tested-by: Lei Yang <leiyang@redhat.com>
---
 include/net/flow_dissector.h | 1 +
 net/core/flow_dissector.c    | 3 ++-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/net/flow_dissector.h b/include/net/flow_dissector.h
index ced79dc8e856..d01c1ec77b7d 100644
--- a/include/net/flow_dissector.h
+++ b/include/net/flow_dissector.h
@@ -423,6 +423,7 @@ __be32 flow_get_u32_src(const struct flow_keys *flow);
 __be32 flow_get_u32_dst(const struct flow_keys *flow);
 
 extern struct flow_dissector flow_keys_dissector;
+extern struct flow_dissector flow_keys_dissector_symmetric;
 extern struct flow_dissector flow_keys_basic_dissector;
 
 /* struct flow_keys_digest:
diff --git a/net/core/flow_dissector.c b/net/core/flow_dissector.c
index 9cd8de6bebb5..32c7ee31330c 100644
--- a/net/core/flow_dissector.c
+++ b/net/core/flow_dissector.c
@@ -1862,7 +1862,8 @@ void make_flow_keys_digest(struct flow_keys_digest *digest,
 }
 EXPORT_SYMBOL(make_flow_keys_digest);
 
-static struct flow_dissector flow_keys_dissector_symmetric __read_mostly;
+struct flow_dissector flow_keys_dissector_symmetric __read_mostly;
+EXPORT_SYMBOL(flow_keys_dissector_symmetric);
 
 u32 __skb_get_hash_symmetric_net(const struct net *net, const struct sk_buff *skb)
 {

-- 
2.49.0

On Fri, May 30, 2025 at 12:50 PM Akihiko Odaki <akihiko.odaki@daynix.com> wrote:
>
> flow_keys_dissector_symmetric is useful to derive a symmetric hash
> and to know its source such as IPv4, IPv6, TCP, and UDP.
>
> Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
> Tested-by: Lei Yang <leiyang@redhat.com>
> ---

Acked-by: Jason Wang <jasowang@redhat.com>

Thanks