linux-kernel - [PATCH RFC v5 03/10] net: flow_dissector: Export flow_keys_dissector

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Message-Id: <20241008-rss-v5-3-f3cf68df005d@daynix.com>
Date: Tue, 08 Oct 2024 15:54:23 +0900
From: Akihiko Odaki <akihiko.odaki@...nix.com>
To: Jonathan Corbet <corbet@....net>, 
 Willem de Bruijn <willemdebruijn.kernel@...il.com>, 
 Jason Wang <jasowang@...hat.com>, "David S. Miller" <davem@...emloft.net>, 
 Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, 
 Paolo Abeni <pabeni@...hat.com>, "Michael S. Tsirkin" <mst@...hat.com>, 
 Xuan Zhuo <xuanzhuo@...ux.alibaba.com>, Shuah Khan <shuah@...nel.org>, 
 linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org, 
 netdev@...r.kernel.org, kvm@...r.kernel.org, 
 virtualization@...ts.linux-foundation.org, linux-kselftest@...r.kernel.org, 
 Yuri Benditovich <yuri.benditovich@...nix.com>, 
 Andrew Melnychenko <andrew@...nix.com>, 
 Stephen Hemminger <stephen@...workplumber.org>, gur.stavi@...wei.com, 
 Akihiko Odaki <akihiko.odaki@...nix.com>
Subject: [PATCH RFC v5 03/10] net: flow_dissector: Export
 flow_keys_dissector_symmetric

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@...nix.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 0e638a37aa09..9822988f2d49 100644
--- a/net/core/flow_dissector.c
+++ b/net/core/flow_dissector.c
@@ -1852,7 +1852,8 @@ 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)
 {

-- 
2.46.2