wifi: iwlwifi: mvm: add a debug print when we get a BAR

Getting a BAR can be an explanation if we're chasing packet loss. Add a
print with the relevant debug level in that code path.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230913145231.913e989a1751.I6bff9020e339d91b61b5ad6aede27bcf8c7e6819@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c b/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c
index 42d69f557e711b86a0659d81fa249d957603b75c..041afc97a91102907e6764b2ea18420b11076ff3 100644 (file)
--- a/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c
@@ -2803,6 +2803,9 @@ void iwl_mvm_rx_bar_frame_release(struct iwl_mvm *mvm, struct napi_struct *napi,
                 tid))
                goto out;
 
+       IWL_DEBUG_DROP(mvm, "Received a BAR, expect packet loss: nssn %d\n",
+                      nssn);
+
        iwl_mvm_release_frames_from_notif(mvm, napi, baid, nssn, queue, 0);
 out:
        rcu_read_unlock();