Merge branch 'x86-debug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...

[firefly-linux-kernel-4.4.55.git] / include / linux / if_vlan.h

diff --git a/include/linux/if_vlan.h b/include/linux/if_vlan.h
index 12d5543b14f25198d5754582ed49a6f0cc0913cb..33a6e1951d4df57bc2d9bad947e71713fa5aa7c7 100644 (file)
--- a/include/linux/if_vlan.h
+++ b/include/linux/if_vlan.h
@@ -18,10 +18,9 @@
 #include <linux/etherdevice.h>
 #include <linux/rtnetlink.h>
 
-#define VLAN_HLEN      4               /* The additional bytes (on top of the Ethernet header)
-                                        * that VLAN requires.
+#define VLAN_HLEN      4               /* The additional bytes required by VLAN
+                                        * (in addition to the Ethernet header)
                                         */
-#define VLAN_ETH_ALEN  6               /* Octets in one ethernet addr   */
 #define VLAN_ETH_HLEN  18              /* Total octets in header.       */
 #define VLAN_ETH_ZLEN  64              /* Min. octets in frame sans FCS */
 
@@ -74,22 +73,7 @@ static inline struct vlan_ethhdr *vlan_eth_hdr(const struct sk_buff *skb)
 /* found in socket.c */
 extern void vlan_ioctl_set(int (*hook)(struct net *, void __user *));
 
-/* if this changes, algorithm will have to be reworked because this
- * depends on completely exhausting the VLAN identifier space.  Thus
- * it gives constant time look-up, but in many cases it wastes memory.
- */
-#define VLAN_GROUP_ARRAY_SPLIT_PARTS  8
-#define VLAN_GROUP_ARRAY_PART_LEN     (VLAN_N_VID/VLAN_GROUP_ARRAY_SPLIT_PARTS)
-
-struct vlan_group {
-       struct net_device       *real_dev; /* The ethernet(like) device
-                                           * the vlan is attached to.
-                                           */
-       unsigned int            nr_vlans;
-       struct hlist_node       hlist;  /* linked list */
-       struct net_device **vlan_devices_arrays[VLAN_GROUP_ARRAY_SPLIT_PARTS];
-       struct rcu_head         rcu;
-};
+struct vlan_info;
 
 static inline int is_vlan_dev(struct net_device *dev)
 {
@@ -109,6 +93,13 @@ extern u16 vlan_dev_vlan_id(const struct net_device *dev);
 extern bool vlan_do_receive(struct sk_buff **skb, bool last_handler);
 extern struct sk_buff *vlan_untag(struct sk_buff *skb);
 
+extern int vlan_vid_add(struct net_device *dev, unsigned short vid);
+extern void vlan_vid_del(struct net_device *dev, unsigned short vid);
+
+extern int vlan_vids_add_by_dev(struct net_device *dev,
+                               const struct net_device *by_dev);
+extern void vlan_vids_del_by_dev(struct net_device *dev,
+                                const struct net_device *by_dev);
 #else
 static inline struct net_device *
 __vlan_find_dev_deep(struct net_device *real_dev, u16 vlan_id)
@@ -139,6 +130,26 @@ static inline struct sk_buff *vlan_untag(struct sk_buff *skb)
 {
        return skb;
 }
+
+static inline int vlan_vid_add(struct net_device *dev, unsigned short vid)
+{
+       return 0;
+}
+
+static inline void vlan_vid_del(struct net_device *dev, unsigned short vid)
+{
+}
+
+static inline int vlan_vids_add_by_dev(struct net_device *dev,
+                                      const struct net_device *by_dev)
+{
+       return 0;
+}
+
+static inline void vlan_vids_del_by_dev(struct net_device *dev,
+                                       const struct net_device *by_dev)
+{
+}
 #endif
 
 /**
@@ -165,7 +176,7 @@ static inline struct sk_buff *vlan_insert_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 */
@@ -310,6 +321,40 @@ static inline __be16 vlan_get_protocol(const struct sk_buff *skb)
 
        return protocol;
 }
+
+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 /* __KERNEL__ */
 
 /* VLAN IOCTLs are found in sockios.h */
@@ -352,7 +397,7 @@ struct vlan_ioctl_args {
                unsigned int skb_priority;
                unsigned int name_type;
                unsigned int bind_type;
-               unsigned int flag; /* Matches vlan_dev_info flags */
+               unsigned int flag; /* Matches vlan_dev_priv flags */
         } u;
 
        short vlan_qos;