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net: add CONFIG_DEBUG_NET

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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>
This commit is contained in:
Eric Dumazet
2022-05-09 20:57:38 -07:00
committed by David S. Miller
parent 5b87be9e49
commit d268c1f5cf
2 changed files with 13 additions and 0 deletions
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7
net/Kconfig.debug
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@@ -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.