From: Johannes Berg <johannes.berg@xxxxxxxxx>
This can be useful when using the device as a sniffer.
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx>
---
drivers/net/wireless/iwlwifi/mvm/mac-ctxt.c | 8 +++++++-
drivers/net/wireless/iwlwifi/mvm/rx.c | 6 +++++-
2 files changed, 12 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/iwlwifi/mvm/mac-ctxt.c b/drivers/net/wireless/iwlwifi/mvm/mac-ctxt.c
index ab5a7ac..f41f9b0 100644
--- a/drivers/net/wireless/iwlwifi/mvm/mac-ctxt.c
+++ b/drivers/net/wireless/iwlwifi/mvm/mac-ctxt.c
@@ -719,7 +719,9 @@ static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm,
cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROMISC |
MAC_FILTER_IN_CONTROL_AND_MGMT |
MAC_FILTER_IN_BEACON |
- MAC_FILTER_IN_PROBE_REQUEST);
+ MAC_FILTER_IN_PROBE_REQUEST |
+ MAC_FILTER_IN_CRC32);
+ mvm->hw->flags |= IEEE80211_HW_RX_INCLUDES_FCS;
return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
}
@@ -1122,6 +1124,10 @@ int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
}
mvmvif->uploaded = false;
+
+ if (vif->type == NL80211_IFTYPE_MONITOR)
+ mvm->hw->flags &= ~IEEE80211_HW_RX_INCLUDES_FCS;
+
return 0;
}
diff --git a/drivers/net/wireless/iwlwifi/mvm/rx.c b/drivers/net/wireless/iwlwifi/mvm/rx.c
index a4af501..3a1f398 100644
--- a/drivers/net/wireless/iwlwifi/mvm/rx.c
+++ b/drivers/net/wireless/iwlwifi/mvm/rx.c
@@ -300,10 +300,14 @@ int iwl_mvm_rx_rx_mpdu(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
return 0;
}
+ /*
+ * Keep packets with CRC errors (and with overrun) for monitor mode
+ * (otherwise the firmware discards them) but mark them as bad.
+ */
if (!(rx_pkt_status & RX_MPDU_RES_STATUS_CRC_OK) ||
!(rx_pkt_status & RX_MPDU_RES_STATUS_OVERRUN_OK)) {
IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n", rx_pkt_status);
- return 0;
+ rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
}
/* This will be used in several places later */
--
1.8.3.2
--
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