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authorNeale Ranns <nranns@cisco.com>2017-05-30 09:53:52 -0700
committerDamjan Marion <dmarion.lists@gmail.com>2017-06-01 17:15:44 +0000
commitc2aad53aa5430137ac5a76a8746f11604277835a (patch)
tree869340b20ecee5d88d8ebac60540fe927c02e34e /src/vnet/mfib
parent10d8cc6bf92851fcaec4a6b4c6d3554dc1eb2386 (diff)
IP Mcast - recalculate on interface up/dowm
Change-Id: Ie5b88fd7187ed62218a2e4e0e493c33e3e9ecc2f Signed-off-by: Neale Ranns <nranns@cisco.com>
Diffstat (limited to 'src/vnet/mfib')
-rw-r--r--src/vnet/mfib/mfib_entry.c133
-rw-r--r--src/vnet/mfib/mfib_entry.h10
2 files changed, 87 insertions, 56 deletions
diff --git a/src/vnet/mfib/mfib_entry.c b/src/vnet/mfib/mfib_entry.c
index 49792f02ae4..cf25b67af6a 100644
--- a/src/vnet/mfib/mfib_entry.c
+++ b/src/vnet/mfib/mfib_entry.c
@@ -366,62 +366,6 @@ mfib_entry_src_remove (mfib_entry_t *mfib_entry,
}
}
-static void
-mfib_entry_last_lock_gone (fib_node_t *node)
-{
- mfib_entry_t *mfib_entry;
- mfib_entry_src_t *msrc;
-
- mfib_entry = mfib_entry_from_fib_node(node);
-
- dpo_reset(&mfib_entry->mfe_rep);
-
- MFIB_ENTRY_DBG(mfib_entry, "last-lock");
-
- vec_foreach(msrc, mfib_entry->mfe_srcs)
- {
- mfib_entry_src_flush(msrc);
- }
-
- vec_free(mfib_entry->mfe_srcs);
-
- fib_node_deinit(&mfib_entry->mfe_node);
- pool_put(mfib_entry_pool, mfib_entry);
-}
-
-/*
- * mfib_entry_back_walk_notify
- *
- * A back walk has reach this entry.
- */
-static fib_node_back_walk_rc_t
-mfib_entry_back_walk_notify (fib_node_t *node,
- fib_node_back_walk_ctx_t *ctx)
-{
- // FIXME - re-evalute
-
- return (FIB_NODE_BACK_WALK_CONTINUE);
-}
-
-static void
-mfib_entry_show_memory (void)
-{
- fib_show_memory_usage("multicast-Entry",
- pool_elts(mfib_entry_pool),
- pool_len(mfib_entry_pool),
- sizeof(mfib_entry_t));
-}
-
-/*
- * The MFIB entry's graph node virtual function table
- */
-static const fib_node_vft_t mfib_entry_vft = {
- .fnv_get = mfib_entry_get_node,
- .fnv_last_lock = mfib_entry_last_lock_gone,
- .fnv_back_walk = mfib_entry_back_walk_notify,
- .fnv_mem_show = mfib_entry_show_memory,
-};
-
u32
mfib_entry_child_add (fib_node_index_t mfib_entry_index,
fib_node_type_t child_type,
@@ -464,6 +408,7 @@ mfib_entry_alloc (u32 fib_index,
mfib_entry->mfe_srcs = NULL;
mfib_entry->mfe_itfs = NULL;
mfib_entry->mfe_rpf_id = MFIB_RPF_ID_NONE;
+ mfib_entry->mfe_pl = FIB_NODE_INDEX_INVALID;
dpo_reset(&mfib_entry->mfe_rep);
@@ -594,6 +539,15 @@ mfib_entry_stack (mfib_entry_t *mfib_entry,
dp = fib_proto_to_dpo(mfib_entry_get_proto(mfib_entry));
+ /*
+ * unlink the enty from the previous path list.
+ */
+ if (FIB_NODE_INDEX_INVALID != mfib_entry->mfe_pl)
+ {
+ fib_path_list_child_remove(mfib_entry->mfe_pl,
+ mfib_entry->mfe_sibling);
+ }
+
if (NULL != msrc &&
FIB_NODE_INDEX_INVALID != msrc->mfes_pl)
{
@@ -658,6 +612,17 @@ mfib_entry_stack (mfib_entry_t *mfib_entry,
dpo_reset(&ctx.next_hops[0].path_dpo);
vec_free(ctx.next_hops);
}
+
+ /*
+ * link the entry to the path-list.
+ * The entry needs to be a child so that we receive the back-walk
+ * updates to recalculate forwarding.
+ */
+ mfib_entry->mfe_pl = msrc->mfes_pl;
+ mfib_entry->mfe_sibling =
+ fib_path_list_child_add(mfib_entry->mfe_pl,
+ FIB_NODE_TYPE_MFIB_ENTRY,
+ mfib_entry_get_index(mfib_entry));
}
else
{
@@ -1098,6 +1063,62 @@ mfib_entry_cmp_for_sort (void *i1, void *i2)
*mfib_entry_index2));
}
+static void
+mfib_entry_last_lock_gone (fib_node_t *node)
+{
+ mfib_entry_t *mfib_entry;
+ mfib_entry_src_t *msrc;
+
+ mfib_entry = mfib_entry_from_fib_node(node);
+
+ dpo_reset(&mfib_entry->mfe_rep);
+
+ MFIB_ENTRY_DBG(mfib_entry, "last-lock");
+
+ vec_foreach(msrc, mfib_entry->mfe_srcs)
+ {
+ mfib_entry_src_flush(msrc);
+ }
+
+ vec_free(mfib_entry->mfe_srcs);
+
+ fib_node_deinit(&mfib_entry->mfe_node);
+ pool_put(mfib_entry_pool, mfib_entry);
+}
+
+/*
+ * mfib_entry_back_walk_notify
+ *
+ * A back walk has reach this entry.
+ */
+static fib_node_back_walk_rc_t
+mfib_entry_back_walk_notify (fib_node_t *node,
+ fib_node_back_walk_ctx_t *ctx)
+{
+ mfib_entry_recalculate_forwarding(mfib_entry_from_fib_node(node));
+
+ return (FIB_NODE_BACK_WALK_CONTINUE);
+}
+
+static void
+mfib_entry_show_memory (void)
+{
+ fib_show_memory_usage("multicast-Entry",
+ pool_elts(mfib_entry_pool),
+ pool_len(mfib_entry_pool),
+ sizeof(mfib_entry_t));
+}
+
+/*
+ * The MFIB entry's graph node virtual function table
+ */
+static const fib_node_vft_t mfib_entry_vft = {
+ .fnv_get = mfib_entry_get_node,
+ .fnv_last_lock = mfib_entry_last_lock_gone,
+ .fnv_back_walk = mfib_entry_back_walk_notify,
+ .fnv_mem_show = mfib_entry_show_memory,
+};
+
void
mfib_entry_lock (fib_node_index_t mfib_entry_index)
{
diff --git a/src/vnet/mfib/mfib_entry.h b/src/vnet/mfib/mfib_entry.h
index 4f62b18ec65..d4377878a2c 100644
--- a/src/vnet/mfib/mfib_entry.h
+++ b/src/vnet/mfib/mfib_entry.h
@@ -49,6 +49,16 @@ typedef struct mfib_entry_t_ {
struct mfib_entry_src_t_ *mfe_srcs;
/**
+ * The path-list of which this entry is a child
+ */
+ fib_node_index_t mfe_pl;
+
+ /**
+ * The sibling index on the path-list
+ */
+ u32 mfe_sibling;
+
+ /**
* 2nd cache line has the members used in the data plane
*/
CLIB_CACHE_LINE_ALIGN_MARK(cacheline1);