netdev - [RFC PATCH 1/7] net: skbuff: Add tun_vnet

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Date: Sun,  8 Oct 2023 14:20:45 +0900
From: Akihiko Odaki <akihiko.odaki@...nix.com>
To: 
Cc: Willem de Bruijn <willemdebruijn.kernel@...il.com>,
	Jason Wang <jasowang@...hat.com>,
	"Michael S. Tsirkin" <mst@...hat.com>,
	Xuan Zhuo Shuah Khan <"xuanzhuo@...ux.alibaba.comshuah"@kernel.org>,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	kvm@...r.kernel.org, virtualization@...ts.linux-foundation.org,
	linux-kselftest@...r.kernel.org, bpf@...r.kernel.org,
	davem@...emloft.net, kuba@...nel.org, ast@...nel.org,
	daniel@...earbox.net, andrii@...nel.org, kafai@...com,
	songliubraving@...com, yhs@...com, john.fastabend@...il.com,
	kpsingh@...nel.org, rdunlap@...radead.org, willemb@...gle.com,
	gustavoars@...nel.org, herbert@...dor.apana.org.au,
	steffen.klassert@...unet.com, nogikh@...gle.com, pablo@...filter.org,
	decui@...rosoft.com, cai@....pw, jakub@...udflare.com,
	elver@...gle.com, pabeni@...hat.com,
	Yuri Benditovich <yuri.benditovich@...nix.com>,
	Akihiko Odaki <akihiko.odaki@...nix.com>
Subject: [RFC PATCH 1/7] net: skbuff: Add tun_vnet_hash flag

tun_vnet_hash can use this flag to indicate it stored virtio-net hash
cache to cb.

Signed-off-by: Akihiko Odaki <akihiko.odaki@...nix.com>
---
 include/linux/skbuff.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 4174c4b82d13..e638f157c13c 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -837,6 +837,7 @@ typedef unsigned char *sk_buff_data_t;
  *	@truesize: Buffer size
  *	@users: User count - see {datagram,tcp}.c
  *	@extensions: allocated extensions, valid if active_extensions is nonzero
+ *	@tun_vnet_hash: tun stored virtio-net hash cache to cb
  */
 
 struct sk_buff {
@@ -989,6 +990,7 @@ struct sk_buff {
 #if IS_ENABLED(CONFIG_IP_SCTP)
 	__u8			csum_not_inet:1;
 #endif
+	__u8			tun_vnet_hash:1;
 
 #if defined(CONFIG_NET_SCHED) || defined(CONFIG_NET_XGRESS)
 	__u16			tc_index;	/* traffic control index */
-- 
2.42.0