OVS need this function for vlan handling.
Signed-off-by: Pravin B Shelar <pshe...@nicira.com>
---
include/linux/if_vlan.h | 34 ++++++++++++++++++++++++++++++++++
net/8021q/vlan_core.c | 33 ---------------------------------
2 files changed, 34 insertions(+), 33 deletions(-)
diff --git a/include/linux/if_vlan.h b/include/linux/if_vlan.h
index 12d5543..d5441f5 100644
--- a/include/linux/if_vlan.h
+++ b/include/linux/if_vlan.h
@@ -96,6 +96,40 @@ static inline int is_vlan_dev(struct net_device *dev)
return dev->priv_flags & IFF_802_1Q_VLAN;
}
+static inline void vlan_set_encap_proto(struct sk_buff *skb,
+ struct vlan_hdr *vhdr)
+{
+ __be16 proto;
+ unsigned char *rawp;
+
+ /*
+ * Was a VLAN packet, grab the encapsulated protocol, which the layer
+ * three protocols care about.
+ */
+
+ proto = vhdr->h_vlan_encapsulated_proto;
+ if (ntohs(proto) >= 1536) {
+ skb->protocol = proto;
+ return;
+ }
+
+ rawp = skb->data;
+ if (*(unsigned short *) rawp == 0xFFFF)
+ /*
+ * This is a magic hack to spot IPX packets. Older Novell
+ * breaks the protocol design and runs IPX over 802.3 without
+ * an 802.2 LLC layer. We look for FFFF which isn't a used
+ * 802.2 SSAP/DSAP. This won't work for fault tolerant netware
+ * but does for the rest.
+ */
+ skb->protocol = htons(ETH_P_802_3);
+ else
+ /*
+ * Real 802.2 LLC
+ */
+ skb->protocol = htons(ETH_P_802_2);
+}
+
#define vlan_tx_tag_present(__skb) ((__skb)->vlan_tci & VLAN_TAG_PRESENT)
#define vlan_tx_tag_get(__skb) ((__skb)->vlan_tci & ~VLAN_TAG_PRESENT)
diff --git a/net/8021q/vlan_core.c b/net/8021q/vlan_core.c
index f5ffc02..9c95e8e 100644
--- a/net/8021q/vlan_core.c
+++ b/net/8021q/vlan_core.c
@@ -110,39 +110,6 @@ static struct sk_buff *vlan_reorder_header(struct sk_buff
*skb)
return skb;
}
-static void vlan_set_encap_proto(struct sk_buff *skb, struct vlan_hdr *vhdr)
-{
- __be16 proto;
- unsigned char *rawp;
-
- /*
- * Was a VLAN packet, grab the encapsulated protocol, which the layer
- * three protocols care about.
- */
-
- proto = vhdr->h_vlan_encapsulated_proto;
- if (ntohs(proto) >= 1536) {
- skb->protocol = proto;
- return;
- }
-
- rawp = skb->data;
- if (*(unsigned short *) rawp == 0xFFFF)
- /*
- * This is a magic hack to spot IPX packets. Older Novell
- * breaks the protocol design and runs IPX over 802.3 without
- * an 802.2 LLC layer. We look for FFFF which isn't a used
- * 802.2 SSAP/DSAP. This won't work for fault tolerant netware
- * but does for the rest.
- */
- skb->protocol = htons(ETH_P_802_3);
- else
- /*
- * Real 802.2 LLC
- */
- skb->protocol = htons(ETH_P_802_2);
-}
-
struct sk_buff *vlan_untag(struct sk_buff *skb)
{
struct vlan_hdr *vhdr;
--
1.7.1
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