1# SPDX-License-Identifier: GPL-2.0-only
 2
 3config NET_DEV_REFCNT_TRACKER
 4	bool "Enable net device refcount tracking"
 5	depends on DEBUG_KERNEL && STACKTRACE_SUPPORT && NET
 6	select REF_TRACKER
 7	default n
 8	help
 9	  Enable debugging feature to track device references.
10	  This adds memory and cpu costs.
11
12config NET_NS_REFCNT_TRACKER
13	bool "Enable networking namespace refcount tracking"
14	depends on DEBUG_KERNEL && STACKTRACE_SUPPORT && NET
15	select REF_TRACKER
16	default n
17	help
18	  Enable debugging feature to track netns references.
19	  This adds memory and cpu costs.
20
21config DEBUG_NET
22	bool "Add generic networking debug"
23	depends on DEBUG_KERNEL && NET
24	help
25	  Enable extra sanity checks in networking.
26	  This is mostly used by fuzzers, but is safe to select.
27
28config DEBUG_NET_SMALL_RTNL
29	bool "Add extra per-netns mutex inside RTNL"
30	depends on DEBUG_KERNEL && NET && LOCK_DEBUGGING_SUPPORT
31	select PROVE_LOCKING
32	default n
33	help
34	  rtnl_lock() is being replaced with rtnl_net_lock() that
35	  acquires the global RTNL and a small per-netns RTNL mutex.
36
37	  During the conversion, rtnl_net_lock() just adds an extra
38	  mutex in every RTNL scope and slows down the operations.
39
40	  Once the conversion completes, rtnl_lock() will be removed
41	  and rtnetlink will gain per-netns scalability.