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path: root/src/vnet/mfib/mfib_table.c
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-rw-r--r--src/vnet/mfib/mfib_table.c88
1 files changed, 79 insertions, 9 deletions
diff --git a/src/vnet/mfib/mfib_table.c b/src/vnet/mfib/mfib_table.c
index 7ffe8941e75..e5550adc8f7 100644
--- a/src/vnet/mfib/mfib_table.c
+++ b/src/vnet/mfib/mfib_table.c
@@ -424,7 +424,8 @@ mfib_table_find (fib_protocol_t proto,
u32
mfib_table_find_or_create_and_lock (fib_protocol_t proto,
- u32 table_id)
+ u32 table_id,
+ mfib_source_t src)
{
mfib_table_t *mfib_table;
fib_node_index_t fi;
@@ -432,10 +433,10 @@ mfib_table_find_or_create_and_lock (fib_protocol_t proto,
switch (proto)
{
case FIB_PROTOCOL_IP4:
- fi = ip4_mfib_table_find_or_create_and_lock(table_id);
+ fi = ip4_mfib_table_find_or_create_and_lock(table_id, src);
break;
case FIB_PROTOCOL_IP6:
- fi = ip6_mfib_table_find_or_create_and_lock(table_id);
+ fi = ip6_mfib_table_find_or_create_and_lock(table_id, src);
break;
case FIB_PROTOCOL_MPLS:
default:
@@ -451,6 +452,59 @@ mfib_table_find_or_create_and_lock (fib_protocol_t proto,
return (fi);
}
+/**
+ * @brief Table flush context. Store the indicies of matching FIB entries
+ * that need to be removed.
+ */
+typedef struct mfib_table_flush_ctx_t_
+{
+ /**
+ * The list of entries to flush
+ */
+ fib_node_index_t *mftf_entries;
+
+ /**
+ * The source we are flushing
+ */
+ mfib_source_t mftf_source;
+} mfib_table_flush_ctx_t;
+
+static int
+mfib_table_flush_cb (fib_node_index_t mfib_entry_index,
+ void *arg)
+{
+ mfib_table_flush_ctx_t *ctx = arg;
+
+ if (mfib_entry_is_sourced(mfib_entry_index, ctx->mftf_source))
+ {
+ vec_add1(ctx->mftf_entries, mfib_entry_index);
+ }
+ return (1);
+}
+
+void
+mfib_table_flush (u32 mfib_index,
+ fib_protocol_t proto,
+ mfib_source_t source)
+{
+ fib_node_index_t *mfib_entry_index;
+ mfib_table_flush_ctx_t ctx = {
+ .mftf_entries = NULL,
+ .mftf_source = source,
+ };
+
+ mfib_table_walk(mfib_index, proto,
+ mfib_table_flush_cb,
+ &ctx);
+
+ vec_foreach(mfib_entry_index, ctx.mftf_entries)
+ {
+ mfib_table_entry_delete_index(*mfib_entry_index, source);
+ }
+
+ vec_free(ctx.mftf_entries);
+}
+
static void
mfib_table_destroy (mfib_table_t *mfib_table)
{
@@ -472,27 +526,43 @@ mfib_table_destroy (mfib_table_t *mfib_table)
void
mfib_table_unlock (u32 fib_index,
- fib_protocol_t proto)
+ fib_protocol_t proto,
+ mfib_source_t source)
{
mfib_table_t *mfib_table;
mfib_table = mfib_table_get(fib_index, proto);
- mfib_table->mft_locks--;
+ mfib_table->mft_locks[source]--;
+ mfib_table->mft_locks[MFIB_TABLE_TOTAL_LOCKS]--;
+
+ if (0 == mfib_table->mft_locks[source])
+ {
+ /*
+ * The source no longer needs the table. flush any routes
+ * from it just in case
+ */
+ mfib_table_flush(fib_index, proto, source);
+ }
- if (0 == mfib_table->mft_locks)
+ if (0 == mfib_table->mft_locks[MFIB_TABLE_TOTAL_LOCKS])
{
- mfib_table_destroy(mfib_table);
+ /*
+ * no more locak from any source - kill it
+ */
+ mfib_table_destroy(mfib_table);
}
}
void
mfib_table_lock (u32 fib_index,
- fib_protocol_t proto)
+ fib_protocol_t proto,
+ mfib_source_t source)
{
mfib_table_t *mfib_table;
mfib_table = mfib_table_get(fib_index, proto);
- mfib_table->mft_locks++;
+ mfib_table->mft_locks[source]++;
+ mfib_table->mft_locks[MFIB_TABLE_TOTAL_LOCKS]++;
}
void