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Message-ID: <20231015141644.260646-4-akihiko.odaki@daynix.com> Date: Sun, 15 Oct 2023 23:16:31 +0900 From: Akihiko Odaki <akihiko.odaki@...nix.com> To: Cc: Alexei Starovoitov <ast@...nel.org>, Daniel Borkmann <daniel@...earbox.net>, Andrii Nakryiko <andrii@...nel.org>, Martin KaFai Lau <martin.lau@...ux.dev>, Song Liu <song@...nel.org>, Yonghong Song <yonghong.song@...ux.dev>, John Fastabend <john.fastabend@...il.com>, KP Singh <kpsingh@...nel.org>, Stanislav Fomichev <sdf@...gle.com>, Hao Luo <haoluo@...gle.com>, Jiri Olsa <jolsa@...nel.org>, 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>, Mykola Lysenko <mykolal@...com>, Shuah Khan <shuah@...nel.org>, bpf@...r.kernel.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>, Akihiko Odaki <akihiko.odaki@...nix.com> Subject: [RFC PATCH v2 3/7] skbuff: Introduce SKB_EXT_TUN_VNET_HASH This new extension will be used by tun to carry the hash values and types to report with virtio-net headers. Signed-off-by: Akihiko Odaki <akihiko.odaki@...nix.com> --- include/linux/skbuff.h | 10 ++++++++++ net/core/skbuff.c | 3 +++ 2 files changed, 13 insertions(+) diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 4174c4b82d13..1f2e5d350810 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -333,6 +333,13 @@ struct tc_skb_ext { }; #endif +#if IS_ENABLED(CONFIG_TUN) +struct tun_vnet_hash { + u32 value; + u16 report; +}; +#endif + struct sk_buff_head { /* These two members must be first to match sk_buff. */ struct_group_tagged(sk_buff_list, list, @@ -4631,6 +4638,9 @@ enum skb_ext_id { #endif #if IS_ENABLED(CONFIG_MCTP_FLOWS) SKB_EXT_MCTP, +#endif +#if IS_ENABLED(CONFIG_TUN) + SKB_EXT_TUN_VNET_HASH, #endif SKB_EXT_NUM, /* must be last */ }; diff --git a/net/core/skbuff.c b/net/core/skbuff.c index 4eaf7ed0d1f4..774c2b26bf25 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -4793,6 +4793,9 @@ static const u8 skb_ext_type_len[] = { #if IS_ENABLED(CONFIG_MCTP_FLOWS) [SKB_EXT_MCTP] = SKB_EXT_CHUNKSIZEOF(struct mctp_flow), #endif +#if IS_ENABLED(CONFIG_TUN) + [SKB_EXT_TUN_VNET_HASH] = SKB_EXT_CHUNKSIZEOF(struct tun_vnet_hash), +#endif }; static __always_inline unsigned int skb_ext_total_length(void) -- 2.42.0
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