sr: Support uSID function.

1. Add uSID function in VNET SRv6
2. Add test case for uSID

Type: feature

Signed-off-by: Tetsuya Murakami <tetsuya.mrk@gmail.com>
Change-Id: I354fc687192ed713ceb81fccc9f7b69b6777f6f6
Signed-off-by: Tetsuya Murakami <tetsuya.mrk@gmail.com>
diff --git a/src/vnet/srv6/sr.h b/src/vnet/srv6/sr.h
index f804b19..41adef3 100755
--- a/src/vnet/srv6/sr.h
+++ b/src/vnet/srv6/sr.h
@@ -43,7 +43,9 @@
 #define SR_BEHAVIOR_DX4 7
 #define SR_BEHAVIOR_DT6 8
 #define SR_BEHAVIOR_DT4 9
-#define SR_BEHAVIOR_LAST 10	/* Must always be the last one */
+#define SR_BEHAVIOR_END_UN_PERF 10
+#define SR_BEHAVIOR_END_UN 11
+#define SR_BEHAVIOR_LAST 12	/* Must always be the last one */
 
 #define SR_STEER_L2 2
 #define SR_STEER_IPV4 4
@@ -139,6 +141,15 @@
 
   u32 nh_adj;						/**< Next_adj for xconnect usage only */
 
+  ip6_address_t usid_block;
+  ip6_address_t usid_block_mask;
+
+  u8 usid_index;
+  u8 usid_len;
+
+  u8 usid_next_index;
+  u8 usid_next_len;
+
   void *plugin_mem;				/**< Memory to be used by the plugin callback functions */
 } ip6_sr_localsid_t;
 
@@ -231,6 +242,13 @@
   u32 sr_policy;					/**< SR Policy index */
 } ip6_sr_steering_policy_t;
 
+typedef struct
+{
+  ip6_address_t address;
+  u16 pref_len;
+  u8 padding[2];
+} sr_localsid_key_t;
+
 /**
  * @brief Segment Routing main datastructure
  */
@@ -334,7 +352,7 @@
 sr_cli_localsid (char is_del, ip6_address_t * localsid_addr,
 		 u16 localsid_prefix_len, char end_psp, u8 behavior,
 		 u32 sw_if_index, u32 vlan_index, u32 fib_table,
-		 ip46_address_t * nh_addr, void *ls_plugin_mem);
+		 ip46_address_t * nh_addr, int usid_len, void *ls_plugin_mem);
 
 extern int
 sr_steering_policy (int is_del, ip6_address_t * bsid, u32 sr_policy_index,