net: change name of flow_dissector header to match the .c file name
add couple of empty lines on the way.
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/flow_dissector.h b/include/net/flow_dissector.h
new file mode 100644
index 0000000..5e99a7b
--- /dev/null
+++ b/include/net/flow_dissector.h
@@ -0,0 +1,68 @@
+#ifndef _NET_FLOW_DISSECTOR_H
+#define _NET_FLOW_DISSECTOR_H
+
+/* struct flow_keys:
+ * @src: source ip address in case of IPv4
+ * For IPv6 it contains 32bit hash of src address
+ * @dst: destination ip address in case of IPv4
+ * For IPv6 it contains 32bit hash of dst address
+ * @ports: port numbers of Transport header
+ * port16[0]: src port number
+ * port16[1]: dst port number
+ * @thoff: Transport header offset
+ * @n_proto: Network header protocol (eg. IPv4/IPv6)
+ * @ip_proto: Transport header protocol (eg. TCP/UDP)
+ * All the members, except thoff, are in network byte order.
+ */
+struct flow_keys {
+ /* (src,dst) must be grouped, in the same way than in IP header */
+ __be32 src;
+ __be32 dst;
+ union {
+ __be32 ports;
+ __be16 port16[2];
+ };
+ u16 thoff;
+ __be16 n_proto;
+ u8 ip_proto;
+};
+
+bool __skb_flow_dissect(const struct sk_buff *skb, struct flow_keys *flow,
+ void *data, __be16 proto, int nhoff, int hlen);
+
+static inline bool skb_flow_dissect(const struct sk_buff *skb,
+ struct flow_keys *flow)
+{
+ return __skb_flow_dissect(skb, flow, NULL, 0, 0, 0);
+}
+
+__be32 __skb_flow_get_ports(const struct sk_buff *skb, int thoff, u8 ip_proto,
+ void *data, int hlen_proto);
+
+static inline __be32 skb_flow_get_ports(const struct sk_buff *skb,
+ int thoff, u8 ip_proto)
+{
+ return __skb_flow_get_ports(skb, thoff, ip_proto, NULL, 0);
+}
+
+u32 flow_hash_from_keys(struct flow_keys *keys);
+
+unsigned int flow_get_hlen(const unsigned char *data, unsigned int max_len,
+ __be16 protocol);
+
+/* struct flow_keys_digest:
+ *
+ * This structure is used to hold a digest of the full flow keys. This is a
+ * larger "hash" of a flow to allow definitively matching specific flows where
+ * the 32 bit skb->hash is not large enough. The size is limited to 16 bytes so
+ * that it can by used in CB of skb (see sch_choke for an example).
+ */
+#define FLOW_KEYS_DIGEST_LEN 16
+struct flow_keys_digest {
+ u8 data[FLOW_KEYS_DIGEST_LEN];
+};
+
+void make_flow_keys_digest(struct flow_keys_digest *digest,
+ const struct flow_keys *flow);
+
+#endif