Fix source address reachability check for ip6 local packets

[vpp.git] / src / vnet / fib / ip6_fib.h

diff --git a/src/vnet/fib/ip6_fib.h b/src/vnet/fib/ip6_fib.h
index 78da374..e460e2f 100644 (file)
--- a/src/vnet/fib/ip6_fib.h
+++ b/src/vnet/fib/ip6_fib.h
@@ -20,6 +20,7 @@
 #include <vnet/ip/format.h>
 #include <vnet/fib/fib_entry.h>
 #include <vnet/fib/fib_table.h>
+#include <vnet/fib/fib_urpf_list.h>
 #include <vnet/ip/lookup.h>
 #include <vnet/dpo/load_balance.h>
 
@@ -67,7 +68,28 @@ extern void ip6_fib_table_walk(u32 fib_index,
                                void *ctx);
 
 /**
- * @biref return the DPO that the LB stacks on.
+ * @brief returns number of links on which src is reachable.
+ */
+always_inline int
+ip6_urpf_loose_check (ip6_main_t * im,
+                     vlib_buffer_t * b,
+                     ip6_header_t * i)
+{
+    const load_balance_t *lb0;
+    index_t lbi;
+
+    lbi = ip6_fib_table_fwding_lookup_with_if_index(
+              im,
+              vnet_buffer (b)->sw_if_index[VLIB_RX],
+              &i->src_address);
+
+    lb0 = load_balance_get(lbi);
+
+    return (fib_urpf_check_size (lb0->lb_urpf));
+}
+
+/**
+ * @brief return the DPO that the LB stacks on.
  */
 always_inline u32
 ip6_src_lookup_for_packet (ip6_main_t * im,