session: fix session_table_get_or_alloc
Extending the fib_index_to_table_index could leave entries uninitialized,
pointing to the session tables at index 0. That session index exists by
default, but it is a IPv4 session table. That would break all IPv6 on
the unitilized fib indexes.
Type: fix
@@ -156,25 +156,28 @@ make_v6_ss_kv_from_tc (session_kv6_t * kv, transport_connection_t * tc)
}
static session_table_t *
-session_table_get_or_alloc (u8 fib_proto, u8 fib_index)
+session_table_get_or_alloc (u8 fib_proto, u32 fib_index)
{
session_table_t *st;
u32 table_index;
- if (vec_len (fib_index_to_table_index[fib_proto]) <= fib_index)
+ ASSERT (fib_index != ~0);
+ if (vec_len (fib_index_to_table_index[fib_proto]) > fib_index &&
+ fib_index_to_table_index[fib_proto][fib_index] != ~0)
+ {
+ table_index = fib_index_to_table_index[fib_proto][fib_index];
+ return session_table_get (table_index);
+ }
+ else
{
st = session_table_alloc ();
table_index = session_table_index (st);
- vec_validate (fib_index_to_table_index[fib_proto], fib_index);
+ vec_validate_init_empty (fib_index_to_table_index[fib_proto], fib_index,
+ ~0);
fib_index_to_table_index[fib_proto][fib_index] = table_index;
st->active_fib_proto = fib_proto;
session_table_init (st, fib_proto);
return st;
}
- else
- {
- table_index = fib_index_to_table_index[fib_proto][fib_index];
- return session_table_get (table_index);
- }
}
static session_table_t *
