Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / include / net / flow_keys.h

diff --git a/kernel/include/net/flow_keys.h b/kernel/include/net/flow_keys.h
new file mode 100644 (file)
index 0000000..dc8fd81
--- /dev/null
+++ b/kernel/include/net/flow_keys.h
@@ -0,0 +1,45 @@
+#ifndef _NET_FLOW_KEYS_H
+#define _NET_FLOW_KEYS_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);
+#endif