wifi: iwlwifi: mvm: log dropped packets due to MIC error

When we drop frames due to MIC error we want to have something
printed in the logger (this won't be printed by default).

Signed-off-by: Daniel Gabay <daniel.gabay@intel.com>
Reviewed-by: Gregory Greenman <gregory.greenman@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240129211905.41b0abbf1fd2.Ib6ec6a48ec7bebe769d1e1c1df96380a758a0975@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 451af501c7a1c3db7146395f1b0a4f605a57a507..67062fe40152bb22fce83543239f90e0eceeae34 100644 (file)
--- a/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c
@@ -401,8 +401,11 @@ static int iwl_mvm_rx_crypto(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
        case IWL_RX_MPDU_STATUS_SEC_GCM:
                BUILD_BUG_ON(IEEE80211_CCMP_PN_LEN != IEEE80211_GCMP_PN_LEN);
                /* alg is CCM: check MIC only */
-               if (!(status & IWL_RX_MPDU_STATUS_MIC_OK))
+               if (!(status & IWL_RX_MPDU_STATUS_MIC_OK)) {
+                       IWL_DEBUG_DROP(mvm,
+                                      "Dropping packet, bad MIC (CCM/GCM)\n");
                        return -1;
+               }
 
                stats->flag |= RX_FLAG_DECRYPTED | RX_FLAG_MIC_STRIPPED;
                *crypt_len = IEEE80211_CCMP_HDR_LEN;