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Make __ieee80211_data_to_8023() return more individual drop
reasons instead of just doing RX_DROP_U_INVALID_8023.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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This has many different reasons, split the return value into
the individual reasons for better traceability. Also, since
symbolic tracing doesn't work for these, add a few comments
for the numbering.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Convert all instances of RX_DROP_UNUSABLE to indicate a
better reason, and then remove RX_DROP_UNUSABLE.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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If we just check "result & RX_DROP_UNUSABLE", this really only works
by accident, because SKB_DROP_REASON_SUBSYS_MAC80211_UNUSABLE got to
have the value 1, and SKB_DROP_REASON_SUBSYS_MAC80211_MONITOR is 2.
Fix this to really check the entire subsys mask for the value, so it
doesn't matter what the subsystem value is.
Fixes: 7f4e09700bdc ("wifi: mac80211: report all unusable beacon frames")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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It can be really hard to analyse or debug why packets are
going missing in mac80211, so add the needed infrastructure
to use use the new per-subsystem drop reasons.
We actually use two drop reason subsystems here because of
the different handling of frames that are dropped but still
go to monitor for old versions of hostapd, and those that
are just completely unusable (e.g. crypto failed.)
Annotate a few reasons here just to illustrate this, we'll
need to go through and annotate more of them later.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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