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-rw-r--r--src/vnet/mfib/mfib_itf.c80
1 files changed, 77 insertions, 3 deletions
diff --git a/src/vnet/mfib/mfib_itf.c b/src/vnet/mfib/mfib_itf.c
index f77b40e743a..33ef98764e2 100644
--- a/src/vnet/mfib/mfib_itf.c
+++ b/src/vnet/mfib/mfib_itf.c
@@ -17,11 +17,12 @@
#include <vnet/mfib/mfib_itf.h>
#include <vnet/mfib/mfib_signal.h>
+#include <vnet/fib/fib_path.h>
mfib_itf_t *mfib_itf_pool;
index_t
-mfib_itf_create (u32 sw_if_index,
+mfib_itf_create (fib_node_index_t path_index,
mfib_itf_flags_t mfi_flags)
{
mfib_itf_t *mfib_itf;
@@ -29,16 +30,89 @@ mfib_itf_create (u32 sw_if_index,
pool_get_aligned(mfib_itf_pool, mfib_itf,
CLIB_CACHE_LINE_BYTES);
- mfib_itf->mfi_sw_if_index = sw_if_index;
- mfib_itf->mfi_flags = mfi_flags;
+ mfib_itf->mfi_sw_if_index = fib_path_get_resolving_interface(path_index);
mfib_itf->mfi_si = INDEX_INVALID;
+ /*
+ * add the path index to the per-path hash
+ */
+ mfib_itf->mfi_hash = hash_set(mfib_itf->mfi_hash, path_index, mfi_flags);
+
+ /*
+ * the combined flags from all the paths is from just the one contributor
+ */
+ mfib_itf->mfi_flags = mfi_flags;
+
return (mfib_itf - mfib_itf_pool);
}
+static mfib_itf_flags_t
+mfib_itf_mk_flags (const mfib_itf_t *mfib_itf)
+{
+ mfib_itf_flags_t combined_flags, flags;
+ fib_node_index_t *path_index;
+
+ combined_flags = MFIB_ITF_FLAG_NONE;
+
+ hash_foreach(path_index, flags, mfib_itf->mfi_hash,
+ {
+ combined_flags |= flags;
+ });
+
+ return (combined_flags);
+}
+
+int
+mfib_itf_update (mfib_itf_t *mfib_itf,
+ fib_node_index_t path_index,
+ mfib_itf_flags_t mfi_flags)
+{
+ /*
+ * add or remove the path index to the per-path hash
+ */
+ if (MFIB_ITF_FLAG_NONE == mfi_flags)
+ {
+ hash_unset(mfib_itf->mfi_hash, path_index);
+ }
+ else
+ {
+ mfib_itf->mfi_hash = hash_set(mfib_itf->mfi_hash,
+ path_index,
+ mfi_flags);
+ }
+
+ /*
+ * re-generate the combined flags from all the paths.
+ */
+ mfib_itf->mfi_flags = mfib_itf_mk_flags(mfib_itf);
+
+ /*
+ * The interface can be removed if there are no more flags
+ */
+ return (MFIB_ITF_FLAG_NONE == mfib_itf->mfi_flags);
+}
+
+static void
+mfib_itf_hash_flush (mfib_itf_t *mfi)
+{
+ fib_node_index_t path_index, *path_indexp, *all = NULL;
+ mfib_itf_flags_t flags;
+
+ hash_foreach(path_index, flags, mfi->mfi_hash,
+ {
+ vec_add1(all, path_index);
+ });
+
+ vec_foreach(path_indexp, all)
+ {
+ hash_unset(mfi->mfi_hash, *path_indexp);
+ };
+}
+
void
mfib_itf_delete (mfib_itf_t *mfi)
{
+ mfib_itf_hash_flush(mfi);
mfib_signal_remove_itf(mfi);
pool_put(mfib_itf_pool, mfi);
}