[PATCH net-next v2 18/27] net/skbuff: add macros for VLAN_PRESENT bit
Michał Mirosław
mirq-linux at rere.qmqm.pl
Wed Jan 4 07:52:38 AEDT 2017
Signed-off-by: Michał Mirosław <mirq-linux at rere.qmqm.pl>
---
include/linux/skbuff.h | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index b53c0cfd417e..168c3e486bd4 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -768,6 +768,12 @@ struct sk_buff {
__u32 priority;
int skb_iif;
__u32 hash;
+#define PKT_VLAN_PRESENT_BIT 4 // CFI (12-th bit) in TCI
+#ifdef __BIG_ENDIAN
+#define PKT_VLAN_PRESENT_OFFSET() offsetof(struct sk_buff, vlan_tci)
+#else
+#define PKT_VLAN_PRESENT_OFFSET() (offsetof(struct sk_buff, vlan_tci) + 1)
+#endif
__be16 vlan_proto;
__u16 vlan_tci;
#if defined(CONFIG_NET_RX_BUSY_POLL) || defined(CONFIG_XPS)
--
2.11.0
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