1 files changed, 72 insertions, 0 deletions

diff --git a/net/ieee802154/6lowpan.h b/net/ieee802154/6lowpan.h
index 2869c0526dad..2b835db3bda8 100644
--- a/net/ieee802154/6lowpan.h
+++ b/net/ieee802154/6lowpan.h
@@ -231,6 +231,61 @@
 #define LOWPAN_NHC_UDP_CS_P_10  0xF2 /* source = 0xF0 + 8bit inline,
                                         dest = 16 bit inline */
 #define LOWPAN_NHC_UDP_CS_P_11  0xF3 /* source & dest = 0xF0B + 4bit inline */
+#define LOWPAN_NHC_UDP_CS_C     0x04 /* checksum elided */
+
+#ifdef DEBUG
+/* print data in line */
+static inline void raw_dump_inline(const char *caller, char *msg,
+                                   unsigned char *buf, int len)
+{
+        if (msg)
+                pr_debug("%s():%s: ", caller, msg);
+
+        print_hex_dump_debug("", DUMP_PREFIX_NONE, 16, 1, buf, len, false);
+}
+
+/* print data in a table format:
+ *
+ * addr: xx xx xx xx xx xx
+ * addr: xx xx xx xx xx xx
+ * ...
+ */
+static inline void raw_dump_table(const char *caller, char *msg,
+                                  unsigned char *buf, int len)
+{
+        if (msg)
+                pr_debug("%s():%s:\n", caller, msg);
+
+        print_hex_dump_debug("\t", DUMP_PREFIX_OFFSET, 16, 1, buf, len, false);
+}
+#else
+static inline void raw_dump_table(const char *caller, char *msg,
+                                  unsigned char *buf, int len) { }
+static inline void raw_dump_inline(const char *caller, char *msg,
+                                   unsigned char *buf, int len) { }
+#endif
+
+static inline int lowpan_fetch_skb_u8(struct sk_buff *skb, u8 *val)
+{
+        if (unlikely(!pskb_may_pull(skb, 1)))
+                return -EINVAL;
+
+        *val = skb->data[0];
+        skb_pull(skb, 1);
+
+        return 0;
+}
+
+static inline int lowpan_fetch_skb_u16(struct sk_buff *skb, u16 *val)
+{
+        if (unlikely(!pskb_may_pull(skb, 2)))
+                return -EINVAL;
+
+        *val = (skb->data[0] << 8) | skb->data[1];
+        skb_pull(skb, 2);
+
+        return 0;
+}
 
 static inline bool lowpan_fetch_skb(struct sk_buff *skb,
                 void *data, const unsigned int len)
@@ -244,4 +299,21 @@ static inline bool lowpan_fetch_skb(struct sk_buff *skb,
         return false;
 }
 
+static inline void lowpan_push_hc_data(u8 **hc_ptr, const void *data,
+                                       const size_t len)
+{
+        memcpy(*hc_ptr, data, len);
+        *hc_ptr += len;
+}
+
+typedef int (*skb_delivery_cb)(struct sk_buff *skb, struct net_device *dev);
+
+int lowpan_process_data(struct sk_buff *skb, struct net_device *dev,
+                const u8 *saddr, const u8 saddr_type, const u8 saddr_len,
+                const u8 *daddr, const u8 daddr_type, const u8 daddr_len,
+                u8 iphc0, u8 iphc1, skb_delivery_cb skb_deliver);
+int lowpan_header_compress(struct sk_buff *skb, struct net_device *dev,
+                        unsigned short type, const void *_daddr,
+                        const void *_saddr, unsigned int len);
+
 #endif /* __6LOWPAN_H__ */