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. 42