X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=datapath%2Flinux%2Fcompat%2Finclude%2Flinux%2Fif_vlan.h;h=dc4b15e36e3e33660d27186d9910310c7fe8ae43;hb=3d192f8e5655cbffe50356f46bd8fd8c3e8875b0;hp=f418407487d890feb63910f4893207ac052c04a1;hpb=22bcc0e70becd88bf895c44885d63704affe4284;p=openvswitch

diff --git a/datapath/linux/compat/include/linux/if_vlan.h b/datapath/linux/compat/include/linux/if_vlan.h
index f4184074..dc4b15e3 100644
--- a/datapath/linux/compat/include/linux/if_vlan.h
+++ b/datapath/linux/compat/include/linux/if_vlan.h
@@ -1,8 +1,9 @@
 #ifndef __LINUX_IF_VLAN_WRAPPER_H
 #define __LINUX_IF_VLAN_WRAPPER_H 1
 
-#include_next <linux/if_vlan.h>
 #include <linux/skbuff.h>
+#include <linux/version.h>
+#include_next <linux/if_vlan.h>
 
 /*
  * The behavior of __vlan_put_tag() has changed over time:
@@ -30,7 +31,7 @@ static inline struct sk_buff *__vlan_put_tag(struct sk_buff *skb, u16 vlan_tci)
 	veth = (struct vlan_ethhdr *)skb_push(skb, VLAN_HLEN);
 
 	/* Move the mac addresses to the beginning of the new header. */
-	memmove(skb->data, skb->data + VLAN_HLEN, 2 * VLAN_ETH_ALEN);
+	memmove(skb->data, skb->data + VLAN_HLEN, 2 * ETH_ALEN);
 	skb->mac_header -= VLAN_HLEN;
 
 	/* first, the ethernet type */
@@ -54,4 +55,38 @@ static inline struct sk_buff *__vlan_put_tag(struct sk_buff *skb, u16 vlan_tci)
 #define VLAN_TAG_PRESENT	VLAN_CFI_MASK
 #endif
 
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3,3,0)
+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);
+}
+#endif
 #endif	/* linux/if_vlan.h wrapper */