[PATCH RFC v4 1/9] skbuff: Introduce SKB_EXT_TUN_VNET_HASH
From: Akihiko Odaki <hidden>
Date: 2024-09-24 09:01:18
Also in:
kvm, linux-doc, linux-kselftest, lkml, virtualization
Subsystem:
networking drivers, networking [general], the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
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 <redacted> --- include/linux/if_tun.h | 5 +++++ include/linux/skbuff.h | 3 +++ net/core/skbuff.c | 4 ++++ 3 files changed, 12 insertions(+)
diff --git a/include/linux/if_tun.h b/include/linux/if_tun.h
index 043d442994b0..47034aede329 100644
--- a/include/linux/if_tun.h
+++ b/include/linux/if_tun.h@@ -9,6 +9,11 @@ #include <uapi/linux/if_tun.h> #include <uapi/linux/virtio_net.h> +struct tun_vnet_hash_ext { + u32 value; + u16 report; +}; + #define TUN_XDP_FLAG 0x1UL #define TUN_MSG_UBUF 1
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 29c3ea5b6e93..a361c4150144 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h@@ -4718,6 +4718,9 @@ 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..997d79d5612c 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c@@ -60,6 +60,7 @@ #include <linux/errqueue.h> #include <linux/prefetch.h> #include <linux/bitfield.h> +#include <linux/if_tun.h> #include <linux/if_vlan.h> #include <linux/mpls.h> #include <linux/kcov.h>
@@ -4979,6 +4980,9 @@ 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