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/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)