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@xxxxxxxxxx>
---
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
+
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
