iwl4965: report A-MPDU status

This patch is based on "iwlwifi: report A-MPDU status".
(12bf6f45d1703858)

Since the firmware will give us an A-MPDU bit and
only a single PHY information packet for all the
subframes in an A-MPDU, we can easily report the
minimal A-MPDU information for radiotap.

Cc: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

3 files changed, 13 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlegacy/4965-mac.c b/drivers/net/wireless/iwlegacy/4965-mac.c
index d665a3d9f08f..d2d5aae21d38 100644
--- a/drivers/net/wireless/iwlegacy/4965-mac.c
+++ b/drivers/net/wireless/iwlegacy/4965-mac.c
@@ -725,6 +725,16 @@ il4965_hdl_rx(struct il_priv *il, struct il_rx_buf *rxb)
         if (rate_n_flags & RATE_MCS_SGI_MSK)
                 rx_status.flag |= RX_FLAG_SHORT_GI;
 
+        if (phy_res->phy_flags & RX_RES_PHY_FLAGS_AGG_MSK) {
+                /* We know which subframes of an A-MPDU belong
+                 * together since we get a single PHY response
+                 * from the firmware for all of them.
+                 */
+
+                rx_status.flag |= RX_FLAG_AMPDU_DETAILS;
+                rx_status.ampdu_reference = il->_4965.ampdu_ref;
+        }
+
         il4965_pass_packet_to_mac80211(il, header, len, ampdu_status, rxb,
                                        &rx_status);
 }
@@ -736,6 +746,7 @@ il4965_hdl_rx_phy(struct il_priv *il, struct il_rx_buf *rxb)
 {
         struct il_rx_pkt *pkt = rxb_addr(rxb);
         il->_4965.last_phy_res_valid = true;
+        il->_4965.ampdu_ref++;
         memcpy(&il->_4965.last_phy_res, pkt->u.raw,
                sizeof(struct il_rx_phy_res));
 }
diff --git a/drivers/net/wireless/iwlegacy/commands.h b/drivers/net/wireless/iwlegacy/commands.h
index 829d3b9aaa17..3b6c99400892 100644
--- a/drivers/net/wireless/iwlegacy/commands.h
+++ b/drivers/net/wireless/iwlegacy/commands.h
@@ -1136,6 +1136,7 @@ struct il_wep_cmd {
 #define RX_RES_PHY_FLAGS_NARROW_BAND_MSK        cpu_to_le16(1 << 3)
 #define RX_RES_PHY_FLAGS_ANTENNA_MSK            0x70
 #define RX_RES_PHY_FLAGS_ANTENNA_POS            4
+#define RX_RES_PHY_FLAGS_AGG_MSK        cpu_to_le16(1 << 7)
 
 #define RX_RES_STATUS_SEC_TYPE_MSK      (0x7 << 8)
 #define RX_RES_STATUS_SEC_TYPE_NONE     (0x0 << 8)
diff --git a/drivers/net/wireless/iwlegacy/common.h b/drivers/net/wireless/iwlegacy/common.h
index 37fe553b25e0..96f2025d936e 100644
--- a/drivers/net/wireless/iwlegacy/common.h
+++ b/drivers/net/wireless/iwlegacy/common.h
@@ -1356,6 +1356,7 @@ struct il_priv {
                 struct {
                         struct il_rx_phy_res last_phy_res;
                         bool last_phy_res_valid;
+                        u32 ampdu_ref;
 
                         struct completion firmware_loading_complete;