diff mbox series

[RFC,v4,1/9] skbuff: Introduce SKB_EXT_TUN_VNET_HASH

Message ID 20240924-rss-v4-1-84e932ec0e6c@daynix.com (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series tun: Introduce virtio-net hashing feature | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Guessed tree name to be net-next, async
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 56 this patch: 56
netdev/build_tools success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers success CCed 4 of 4 maintainers
netdev/build_clang success Errors and warnings before: 119 this patch: 119
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 4948 this patch: 4948
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 36 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 112 this patch: 112
netdev/source_inline success Was 0 now: 0

Commit Message

Akihiko Odaki Sept. 24, 2024, 9:01 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/if_tun.h | 5 +++++
 include/linux/skbuff.h | 3 +++
 net/core/skbuff.c      | 4 ++++
 3 files changed, 12 insertions(+)
diff mbox series

Patch

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)