fib: re-evaluate the import/export state of a prefix.
Type: fix
re-evaluate the import/export state of a prefix when the interface it is attached to rebinds to a different table.
Only attached routes have import/export requirements, so we can back walk from the glean adjacency when the interface rebinds tables.
There are two cases to consider.
1. the rebind may change the prefix from/to import
2. the import VRF may change
Signed-off-by: Neale Ranns <neale@graphiant.com>
Change-Id: I25b6af43b3b2d8f701dfbe7a08710dc56b3f5778
diff --git a/src/vnet/fib/fib_node.h b/src/vnet/fib/fib_node.h
index 27e67b1..dd266ee 100644
--- a/src/vnet/fib/fib_node.h
+++ b/src/vnet/fib/fib_node.h
@@ -110,6 +110,10 @@
*/
FIB_NODE_BW_REASON_INTERFACE_DOWN,
/**
+ * A resolving interface has been bound to another table
+ */
+ FIB_NODE_BW_REASON_INTERFACE_BIND,
+ /**
* A resolving interface has been deleted.
*/
FIB_NODE_BW_REASON_INTERFACE_DELETE,
@@ -138,6 +142,7 @@
[FIB_NODE_BW_REASON_INTERFACE_UP] = "if-up", \
[FIB_NODE_BW_REASON_INTERFACE_DOWN] = "if-down", \
[FIB_NODE_BW_REASON_INTERFACE_DELETE] = "if-delete", \
+ [FIB_NODE_BW_REASON_INTERFACE_BIND] = "if-bind", \
[FIB_NODE_BW_REASON_ADJ_UPDATE] = "adj-update", \
[FIB_NODE_BW_REASON_ADJ_MTU] = "adj-mtu", \
[FIB_NODE_BW_REASON_ADJ_DOWN] = "adj-down", \
@@ -157,14 +162,15 @@
FIB_NODE_BW_REASON_FLAG_EVALUATE = (1 << FIB_NODE_BW_REASON_EVALUATE),
FIB_NODE_BW_REASON_FLAG_INTERFACE_UP = (1 << FIB_NODE_BW_REASON_INTERFACE_UP),
FIB_NODE_BW_REASON_FLAG_INTERFACE_DOWN = (1 << FIB_NODE_BW_REASON_INTERFACE_DOWN),
+ FIB_NODE_BW_REASON_FLAG_INTERFACE_BIND = (1 << FIB_NODE_BW_REASON_INTERFACE_BIND),
FIB_NODE_BW_REASON_FLAG_INTERFACE_DELETE = (1 << FIB_NODE_BW_REASON_INTERFACE_DELETE),
FIB_NODE_BW_REASON_FLAG_ADJ_UPDATE = (1 << FIB_NODE_BW_REASON_ADJ_UPDATE),
FIB_NODE_BW_REASON_FLAG_ADJ_MTU = (1 << FIB_NODE_BW_REASON_ADJ_MTU),
FIB_NODE_BW_REASON_FLAG_ADJ_DOWN = (1 << FIB_NODE_BW_REASON_ADJ_DOWN),
} __attribute__ ((packed)) fib_node_bw_reason_flag_t;
-STATIC_ASSERT(sizeof(fib_node_bw_reason_flag_t) < 2,
- "BW Reason enum < 2 byte. Consequences for cover_upd_res_t");
+STATIC_ASSERT(sizeof(fib_node_bw_reason_flag_t) < 3,
+ "BW Reason enum < 2 byte. Consequences for fib_entry_src_cover_res_t");
extern u8 *format_fib_node_bw_reason(u8 *s, va_list *args);
@@ -229,6 +235,17 @@
* in the graph.
*/
u32 fnbw_depth;
+
+ /**
+ * Additional data associated with the reason the walk is occuring
+ */
+ union
+ {
+ struct {
+ u32 fnbw_from_fib_index;
+ u32 fnbw_to_fib_index;
+ } interface_bind;
+ };
} fib_node_back_walk_ctx_t;
/**