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[RFC,v3,1/9] skbuff: Introduce SKB_EXT_TUN_VNET_HASH

Message ID 20240915-rss-v3-1-c630015db082@daynix.com
State New
Headers show
Series tun: Introduce virtio-net hashing feature | expand

Commit Message

Akihiko Odaki Sept. 15, 2024, 1:17 a.m. UTC
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@daynix.com>
---
 include/linux/skbuff.h | 10 ++++++++++
 net/core/skbuff.c      |  3 +++
 2 files changed, 13 insertions(+)

Comments

Willem de Bruijn Sept. 18, 2024, 12:46 p.m. UTC | #1
Akihiko Odaki wrote:
> 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@daynix.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 29c3ea5b6e93..17cee21c9999 100644
> --- a/include/linux/skbuff.h
> +++ b/include/linux/skbuff.h
> @@ -334,6 +334,13 @@ struct tc_skb_ext {
>  };
>  #endif
>  
> +#if IS_ENABLED(CONFIG_TUN)
> +struct tun_vnet_hash_ext {
> +	u32 value;
> +	u16 report;
> +};
> +#endif

This is unlikely to belong in skbuff.h

> +
>  struct sk_buff_head {
>  	/* These two members must be first to match sk_buff. */
>  	struct_group_tagged(sk_buff_list, list,
> @@ -4718,6 +4725,9 @@ 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 83f8cd8aa2d1..ce34523fd8de 100644
> --- a/net/core/skbuff.c
> +++ b/net/core/skbuff.c
> @@ -4979,6 +4979,9 @@ 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_ext),
> +#endif
>  };
>  
>  static __always_inline unsigned int skb_ext_total_length(void)
> 
> -- 
> 2.46.0
>
diff mbox series

Patch

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 29c3ea5b6e93..17cee21c9999 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -334,6 +334,13 @@  struct tc_skb_ext {
 };
 #endif
 
+#if IS_ENABLED(CONFIG_TUN)
+struct tun_vnet_hash_ext {
+	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,
@@ -4718,6 +4725,9 @@  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 83f8cd8aa2d1..ce34523fd8de 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -4979,6 +4979,9 @@  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_ext),
+#endif
 };
 
 static __always_inline unsigned int skb_ext_total_length(void)