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| author | Eric Dumazet <edumazet@google.com> | 2022-05-09 20:57:38 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-05-11 12:43:10 +0100 |
| commit | d268c1f5cfc92eb5bb605f7365769aacd93be234 (patch) | |
| tree | 42771345e642844fb0dc5fb55e2a3e755994112c | |
| parent | 5b87be9e4978fe507c7e14c0bdff147d10d39aec (diff) | |
| download | linux-d268c1f5cfc92eb5bb605f7365769aacd93be234.tar.bz2 | |
net: add CONFIG_DEBUG_NET
This config option enables network debugging checks.
This patch adds DEBUG_NET_WARN_ON_ONCE(cond)
Note that this is not a replacement for WARN_ON_ONCE(cond)
as (cond) is not evaluated if CONFIG_DEBUG_NET is not set.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/net/net_debug.h | 6 | ||||
| -rw-r--r-- | net/Kconfig.debug | 7 |
2 files changed, 13 insertions, 0 deletions
diff --git a/include/net/net_debug.h b/include/net/net_debug.h index 19cd2700c20e..1e74684cbbdb 100644 --- a/include/net/net_debug.h +++ b/include/net/net_debug.h @@ -148,4 +148,10 @@ do { \ #endif +#if defined(CONFIG_DEBUG_NET) +#define DEBUG_NET_WARN_ON_ONCE(cond) (void)WARN_ON_ONCE(cond) +#else +#define DEBUG_NET_WARN_ON_ONCE(cond) BUILD_BUG_ON_INVALID(cond) +#endif + #endif /* _LINUX_NET_DEBUG_H */ diff --git a/net/Kconfig.debug b/net/Kconfig.debug index 2f50611df858..a5781cf63b16 100644 --- a/net/Kconfig.debug +++ b/net/Kconfig.debug @@ -17,3 +17,10 @@ config NET_NS_REFCNT_TRACKER help Enable debugging feature to track netns references. This adds memory and cpu costs. + +config DEBUG_NET + bool "Add generic networking debug" + depends on DEBUG_KERNEL + help + Enable extra sanity checks in networking. + This is mostly used by fuzzers, but is safe to select. |