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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>
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@ -148,4 +148,10 @@ do { \
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#endif
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#if defined(CONFIG_DEBUG_NET)
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#define DEBUG_NET_WARN_ON_ONCE(cond) (void)WARN_ON_ONCE(cond)
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#else
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#define DEBUG_NET_WARN_ON_ONCE(cond) BUILD_BUG_ON_INVALID(cond)
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#endif
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#endif /* _LINUX_NET_DEBUG_H */
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@ -17,3 +17,10 @@ config NET_NS_REFCNT_TRACKER
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help
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Enable debugging feature to track netns references.
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This adds memory and cpu costs.
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config DEBUG_NET
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bool "Add generic networking debug"
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depends on DEBUG_KERNEL
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help
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Enable extra sanity checks in networking.
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This is mostly used by fuzzers, but is safe to select.
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