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-rw-r--r--src/vnet/fib/ip6_fib.h24
-rw-r--r--src/vnet/ip/ip6_forward.c9
2 files changed, 26 insertions, 7 deletions
diff --git a/src/vnet/fib/ip6_fib.h b/src/vnet/fib/ip6_fib.h
index 78da3746f17..e460e2ffd09 100644
--- 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,
diff --git a/src/vnet/ip/ip6_forward.c b/src/vnet/ip/ip6_forward.c
index 50951c27495..06c20bbaa12 100644
--- a/src/vnet/ip/ip6_forward.c
+++ b/src/vnet/ip/ip6_forward.c
@@ -1463,16 +1463,14 @@ ip6_local (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
type0 != IP_BUILTIN_PROTOCOL_ICMP &&
!ip6_address_is_link_local_unicast (&ip0->src_address))
{
- u32 src_adj_index0 = ip6_src_lookup_for_packet (im, p0, ip0);
- error0 = (ADJ_INDEX_INVALID == src_adj_index0
+ error0 = (!ip6_urpf_loose_check (im, p0, ip0)
? IP6_ERROR_SRC_LOOKUP_MISS : error0);
}
if (error1 == IP6_ERROR_UNKNOWN_PROTOCOL &&
type1 != IP_BUILTIN_PROTOCOL_ICMP &&
!ip6_address_is_link_local_unicast (&ip1->src_address))
{
- u32 src_adj_index1 = ip6_src_lookup_for_packet (im, p1, ip1);
- error1 = (ADJ_INDEX_INVALID == src_adj_index1
+ error1 = (!ip6_urpf_loose_check (im, p1, ip1)
? IP6_ERROR_SRC_LOOKUP_MISS : error1);
}
@@ -1570,8 +1568,7 @@ ip6_local (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
type0 != IP_BUILTIN_PROTOCOL_ICMP &&
!ip6_address_is_link_local_unicast (&ip0->src_address))
{
- u32 src_adj_index0 = ip6_src_lookup_for_packet (im, p0, ip0);
- error0 = (ADJ_INDEX_INVALID == src_adj_index0
+ error0 = (!ip6_urpf_loose_check (im, p0, ip0)
? IP6_ERROR_SRC_LOOKUP_MISS : error0);
}