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[PATCH 03/16] iwlwifi: support new rx_mpdu_desc api

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From: Golan Ben Ami <golan.ben.ami@xxxxxxxxx>

22560 devices use a new rx_mpdu_desc api.
Update the code to use the new api.

Signed-off-by: Golan Ben Ami <golan.ben.ami@xxxxxxxxx>
Signed-off-by: Luca Coelho <luciano.coelho@xxxxxxxxx>
---
 .../net/wireless/intel/iwlwifi/fw/api/rx.h    | 179 +++++++++++++-----
 .../net/wireless/intel/iwlwifi/mvm/debugfs.c  |   8 +-
 drivers/net/wireless/intel/iwlwifi/mvm/ops.c  |   9 +-
 drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c |  95 +++++++---
 4 files changed, 218 insertions(+), 73 deletions(-)

diff --git a/drivers/net/wireless/intel/iwlwifi/fw/api/rx.h b/drivers/net/wireless/intel/iwlwifi/fw/api/rx.h
index 0daa09c94b0f..565343f7e61f 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/api/rx.h
+++ b/drivers/net/wireless/intel/iwlwifi/fw/api/rx.h
@@ -377,78 +377,94 @@ enum iwl_rx_he_phy {
 };
 
 /**
- * struct iwl_rx_mpdu_desc - RX MPDU descriptor
+ * struct iwl_rx_mpdu_desc_v1 - RX MPDU descriptor
  */
-struct iwl_rx_mpdu_desc {
-	/* DW2 */
-	/**
-	 * @mpdu_len: MPDU length
-	 */
-	__le16 mpdu_len;
-	/**
-	 * @mac_flags1: &enum iwl_rx_mpdu_mac_flags1
-	 */
-	u8 mac_flags1;
-	/**
-	 * @mac_flags2: &enum iwl_rx_mpdu_mac_flags2
-	 */
-	u8 mac_flags2;
-	/* DW3 */
+struct iwl_rx_mpdu_desc_v1 {
+	/* DW7 - carries rss_hash only when rpa_en == 1 */
 	/**
-	 * @amsdu_info: &enum iwl_rx_mpdu_amsdu_info
+	 * @rss_hash: RSS hash value
 	 */
-	u8 amsdu_info;
+	__le32 rss_hash;
+	/* DW8 - carries filter_match only when rpa_en == 1 */
 	/**
-	 * @phy_info: &enum iwl_rx_mpdu_phy_info
+	 * @filter_match: filter match value
 	 */
-	__le16 phy_info;
+	__le32 filter_match;
+	/* DW9 */
 	/**
-	 * @mac_phy_idx: MAC/PHY index
+	 * @rate_n_flags: RX rate/flags encoding
 	 */
-	u8 mac_phy_idx;
-	/* DW4 - carries csum data only when rpa_en == 1 */
+	__le32 rate_n_flags;
+	/* DW10 */
 	/**
-	 * @raw_csum: raw checksum (alledgedly unreliable)
+	 * @energy_a: energy chain A
 	 */
-	__le16 raw_csum;
+	u8 energy_a;
 	/**
-	 * @l3l4_flags: &enum iwl_rx_l3l4_flags
+	 * @energy_b: energy chain B
 	 */
-	__le16 l3l4_flags;
-	/* DW5 */
+	u8 energy_b;
 	/**
-	 * @status: &enum iwl_rx_mpdu_status
+	 * @channel: channel number
 	 */
-	__le16 status;
+	u8 channel;
 	/**
-	 * @hash_filter: hash filter value
+	 * @mac_context: MAC context mask
 	 */
-	u8 hash_filter;
+	u8 mac_context;
+	/* DW11 */
 	/**
-	 * @sta_id_flags: &enum iwl_rx_mpdu_sta_id_flags
+	 * @gp2_on_air_rise: GP2 timer value on air rise (INA)
 	 */
-	u8 sta_id_flags;
-	/* DW6 */
+	__le32 gp2_on_air_rise;
+	/* DW12 & DW13 */
+	union {
+		/**
+		 * @tsf_on_air_rise:
+		 * TSF value on air rise (INA), only valid if
+		 * %IWL_RX_MPDU_PHY_TSF_OVERLOAD isn't set
+		 */
+		__le64 tsf_on_air_rise;
+		/**
+		 * @he_phy_data:
+		 * HE PHY data, see &enum iwl_rx_he_phy, valid
+		 * only if %IWL_RX_MPDU_PHY_TSF_OVERLOAD is set
+		 */
+		__le64 he_phy_data;
+	};
+} __packed;
+
+/**
+ * struct iwl_rx_mpdu_desc_v3 - RX MPDU descriptor
+ */
+struct iwl_rx_mpdu_desc_v3 {
+	/* DW7 - carries filter_match only when rpa_en == 1 */
 	/**
-	 * @reorder_data: &enum iwl_rx_mpdu_reorder_data
+	 * @filter_match: filter match value
 	 */
-	__le32 reorder_data;
-	/* DW7 - carries rss_hash only when rpa_en == 1 */
+	__le32 filter_match;
+	/* DW8 - carries rss_hash only when rpa_en == 1 */
 	/**
 	 * @rss_hash: RSS hash value
 	 */
 	__le32 rss_hash;
-	/* DW8 - carries filter_match only when rpa_en == 1 */
+	/* DW9 */
 	/**
-	 * @filter_match: filter match value
+	 * @partial_hash: 31:0 ip/tcp header hash
+	 *	w/o some fields (such as IP SRC addr)
 	 */
-	__le32 filter_match;
-	/* DW9 */
+	__le32 partial_hash;
+	/* DW10 */
+	/**
+	 * @raw_xsum: raw xsum value
+	 */
+	__le32 raw_xsum;
+	/* DW11 */
 	/**
 	 * @rate_n_flags: RX rate/flags encoding
 	 */
 	__le32 rate_n_flags;
-	/* DW10 */
+	/* DW12 */
 	/**
 	 * @energy_a: energy chain A
 	 */
@@ -465,12 +481,12 @@ struct iwl_rx_mpdu_desc {
 	 * @mac_context: MAC context mask
 	 */
 	u8 mac_context;
-	/* DW11 */
+	/* DW13 */
 	/**
 	 * @gp2_on_air_rise: GP2 timer value on air rise (INA)
 	 */
 	__le32 gp2_on_air_rise;
-	/* DW12 & DW13 */
+	/* DW14 & DW15 */
 	union {
 		/**
 		 * @tsf_on_air_rise:
@@ -485,7 +501,78 @@ struct iwl_rx_mpdu_desc {
 		 */
 		__le64 he_phy_data;
 	};
-} __packed;
+	/* DW16 & DW17 */
+	/**
+	 * @reserved: reserved
+	 */
+	__le32 reserved[2];
+} __packed; /* RX_MPDU_RES_START_API_S_VER_3 */
+
+/**
+ * struct iwl_rx_mpdu_desc - RX MPDU descriptor
+ */
+struct iwl_rx_mpdu_desc {
+	/* DW2 */
+	/**
+	 * @mpdu_len: MPDU length
+	 */
+	__le16 mpdu_len;
+	/**
+	 * @mac_flags1: &enum iwl_rx_mpdu_mac_flags1
+	 */
+	u8 mac_flags1;
+	/**
+	 * @mac_flags2: &enum iwl_rx_mpdu_mac_flags2
+	 */
+	u8 mac_flags2;
+	/* DW3 */
+	/**
+	 * @amsdu_info: &enum iwl_rx_mpdu_amsdu_info
+	 */
+	u8 amsdu_info;
+	/**
+	 * @phy_info: &enum iwl_rx_mpdu_phy_info
+	 */
+	__le16 phy_info;
+	/**
+	 * @mac_phy_idx: MAC/PHY index
+	 */
+	u8 mac_phy_idx;
+	/* DW4 - carries csum data only when rpa_en == 1 */
+	/**
+	 * @raw_csum: raw checksum (alledgedly unreliable)
+	 */
+	__le16 raw_csum;
+	/**
+	 * @l3l4_flags: &enum iwl_rx_l3l4_flags
+	 */
+	__le16 l3l4_flags;
+	/* DW5 */
+	/**
+	 * @status: &enum iwl_rx_mpdu_status
+	 */
+	__le16 status;
+	/**
+	 * @hash_filter: hash filter value
+	 */
+	u8 hash_filter;
+	/**
+	 * @sta_id_flags: &enum iwl_rx_mpdu_sta_id_flags
+	 */
+	u8 sta_id_flags;
+	/* DW6 */
+	/**
+	 * @reorder_data: &enum iwl_rx_mpdu_reorder_data
+	 */
+	__le32 reorder_data;
+
+	union {
+		struct iwl_rx_mpdu_desc_v1 v1;
+		struct iwl_rx_mpdu_desc_v3 v3;
+	};
+} __packed; /* RX_MPDU_RES_START_API_S_VER_3 */
+
+#define IWL_RX_DESC_SIZE_V1 offsetofend(struct iwl_rx_mpdu_desc, v1)
 
 struct iwl_frame_release {
 	u8 baid;
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c
index 1c4178f20441..05b77419953c 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c
@@ -1150,6 +1150,10 @@ static ssize_t iwl_dbgfs_inject_packet_write(struct iwl_mvm *mvm,
 	struct iwl_rx_mpdu_desc *desc;
 	int bin_len = count / 2;
 	int ret = -EINVAL;
+	size_t mpdu_cmd_hdr_size =
+		(mvm->trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560) ?
+		sizeof(struct iwl_rx_mpdu_desc) :
+		IWL_RX_DESC_SIZE_V1;
 
 	if (!iwl_mvm_firmware_running(mvm))
 		return -EIO;
@@ -1168,7 +1172,7 @@ static ssize_t iwl_dbgfs_inject_packet_write(struct iwl_mvm *mvm,
 		goto out;
 
 	/* avoid invalid memory access */
-	if (bin_len < sizeof(*pkt) + sizeof(*desc))
+	if (bin_len < sizeof(*pkt) + mpdu_cmd_hdr_size)
 		goto out;
 
 	/* check this is RX packet */
@@ -1179,7 +1183,7 @@ static ssize_t iwl_dbgfs_inject_packet_write(struct iwl_mvm *mvm,
 	/* check the length in metadata matches actual received length */
 	desc = (void *)pkt->data;
 	if (le16_to_cpu(desc->mpdu_len) !=
-	    (bin_len - sizeof(*desc) - sizeof(*pkt)))
+	    (bin_len - mpdu_cmd_hdr_size - sizeof(*pkt)))
 		goto out;
 
 	local_bh_disable();
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c
index d966262e0819..f5b117d8c354 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c
@@ -621,7 +621,11 @@ iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
 
 	if (iwl_mvm_has_new_rx_api(mvm)) {
 		op_mode->ops = &iwl_mvm_ops_mq;
-		trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_desc);
+		trans->rx_mpdu_cmd_hdr_size =
+			(trans->cfg->device_family >=
+			 IWL_DEVICE_FAMILY_22560) ?
+			sizeof(struct iwl_rx_mpdu_desc) :
+			IWL_RX_DESC_SIZE_V1;
 	} else {
 		op_mode->ops = &iwl_mvm_ops;
 		trans->rx_mpdu_cmd_hdr_size =
@@ -704,8 +708,7 @@ iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
 	}
 
 	/* the hardware splits the A-MSDU */
-	if (mvm->trans->cfg->device_family >=
-	    IWL_DEVICE_FAMILY_22560)
+	if (mvm->trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560)
 		trans_cfg.rx_buf_size = IWL_AMSDU_2K;
 	else if (mvm->cfg->mq_rx_supported)
 		trans_cfg.rx_buf_size = IWL_AMSDU_4K;
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c b/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c
index d82eeb7e0de7..b53148f972a4 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c
@@ -215,15 +215,14 @@ static void iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm *mvm,
 }
 
 static void iwl_mvm_get_signal_strength(struct iwl_mvm *mvm,
-					struct iwl_rx_mpdu_desc *desc,
-					struct ieee80211_rx_status *rx_status)
+					struct ieee80211_rx_status *rx_status,
+					u32 rate_n_flags, int energy_a,
+					int energy_b)
 {
-	int energy_a, energy_b, max_energy;
-	u32 rate_flags = le32_to_cpu(desc->rate_n_flags);
+	int max_energy;
+	u32 rate_flags = rate_n_flags;
 
-	energy_a = desc->energy_a;
 	energy_a = energy_a ? -energy_a : S8_MIN;
-	energy_b = desc->energy_b;
 	energy_b = energy_b ? -energy_b : S8_MIN;
 	max_energy = max(energy_a, energy_b);
 
@@ -368,7 +367,8 @@ static bool iwl_mvm_is_dup(struct ieee80211_sta *sta, int queue,
 		tid = IWL_MAX_TID_COUNT;
 
 	/* If this wasn't a part of an A-MSDU the sub-frame index will be 0 */
-	sub_frame_idx = desc->amsdu_info & IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK;
+	sub_frame_idx = desc->amsdu_info &
+		IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK;
 
 	if (unlikely(ieee80211_has_retry(hdr->frame_control) &&
 		     dup_data->last_seq[tid] == hdr->seq_ctrl &&
@@ -862,23 +862,41 @@ void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi,
 	struct ieee80211_rx_status *rx_status;
 	struct iwl_rx_packet *pkt = rxb_addr(rxb);
 	struct iwl_rx_mpdu_desc *desc = (void *)pkt->data;
-	struct ieee80211_hdr *hdr = (void *)(pkt->data + sizeof(*desc));
+	struct ieee80211_hdr *hdr;
 	u32 len = le16_to_cpu(desc->mpdu_len);
-	u32 rate_n_flags = le32_to_cpu(desc->rate_n_flags);
+	u32 rate_n_flags, gp2_on_air_rise;
 	u16 phy_info = le16_to_cpu(desc->phy_info);
 	struct ieee80211_sta *sta = NULL;
 	struct sk_buff *skb;
-	u8 crypt_len = 0;
+	u8 crypt_len = 0, channel, energy_a, energy_b;
 	struct ieee80211_radiotap_he *he = NULL;
 	struct ieee80211_radiotap_he_mu *he_mu = NULL;
 	u32 he_type = 0xffffffff;
 	/* this is invalid e.g. because puncture type doesn't allow 0b11 */
 #define HE_PHY_DATA_INVAL ((u64)-1)
 	u64 he_phy_data = HE_PHY_DATA_INVAL;
+	size_t desc_size;
 
 	if (unlikely(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
 		return;
 
+	if (mvm->trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560) {
+		rate_n_flags = le32_to_cpu(desc->v3.rate_n_flags);
+		channel = desc->v3.channel;
+		gp2_on_air_rise = le32_to_cpu(desc->v3.gp2_on_air_rise);
+		energy_a = desc->v3.energy_a;
+		energy_b = desc->v3.energy_b;
+		desc_size = sizeof(*desc);
+	} else {
+		rate_n_flags = le32_to_cpu(desc->v1.rate_n_flags);
+		channel = desc->v1.channel;
+		gp2_on_air_rise = le32_to_cpu(desc->v1.gp2_on_air_rise);
+		energy_a = desc->v1.energy_a;
+		energy_b = desc->v1.energy_b;
+		desc_size = IWL_RX_DESC_SIZE_V1;
+	}
+
+	hdr = (void *)(pkt->data + desc_size);
 	/* Dont use dev_alloc_skb(), we'll have enough headroom once
 	 * ieee80211_hdr pulled.
 	 */
@@ -925,8 +943,11 @@ void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi,
 		he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK;
 
 		if (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) {
-			he_phy_data =
-				le64_to_cpu(desc->he_phy_data);
+			if (mvm->trans->cfg->device_family >=
+			    IWL_DEVICE_FAMILY_22560)
+				he_phy_data = le64_to_cpu(desc->v3.he_phy_data);
+			else
+				he_phy_data = le64_to_cpu(desc->v1.he_phy_data);
 
 			if (he_type == RATE_MCS_HE_TYPE_MU) {
 				he_mu = skb_put_data(skb, &mu_known,
@@ -940,6 +961,8 @@ void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi,
 		__skb_pull(skb, radiotap_len);
 	}
 
+	rx_status = IEEE80211_SKB_RXCB(skb);
+
 	if (iwl_mvm_rx_crypto(mvm, hdr, rx_status, phy_info, desc,
 			      le32_to_cpu(pkt->len_n_flags), queue,
 			      &crypt_len)) {
@@ -962,14 +985,28 @@ void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi,
 		rx_status->enc_flags |= RX_ENC_FLAG_SHORTPRE;
 
 	if (likely(!(phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD))) {
-		rx_status->mactime = le64_to_cpu(desc->tsf_on_air_rise);
+		u64 tsf_on_air_rise;
+
+		if (mvm->trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560)
+			tsf_on_air_rise = le64_to_cpu(desc->v3.tsf_on_air_rise);
+		else
+			tsf_on_air_rise = le64_to_cpu(desc->v1.tsf_on_air_rise);
+
+		rx_status->mactime = tsf_on_air_rise;
 		/* TSF as indicated by the firmware is at INA time */
 		rx_status->flag |= RX_FLAG_MACTIME_PLCP_START;
 	} else if (he_type == RATE_MCS_HE_TYPE_SU) {
+		u64 he_phy_data;
+
+		if (mvm->trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560)
+			he_phy_data = le64_to_cpu(desc->v3.he_phy_data);
+		else
+			he_phy_data = le64_to_cpu(desc->v1.he_phy_data);
+
 		he->data1 |=
 			cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_UL_DL_KNOWN);
 		if (FIELD_GET(IWL_RX_HE_PHY_UPLINK,
-			      le64_to_cpu(desc->he_phy_data)))
+			      he_phy_data))
 			he->data3 |=
 				cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA3_UL_DL);
 
@@ -980,7 +1017,7 @@ void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi,
 			rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
 			rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
 			if (FIELD_GET(IWL_RX_HE_PHY_DELIM_EOF,
-				      le64_to_cpu(desc->he_phy_data)))
+				      he_phy_data))
 				rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
 		}
 	} else if (he_mu && he_phy_data != HE_PHY_DATA_INVAL) {
@@ -1005,16 +1042,23 @@ void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi,
 						   he_phy_data),
 					 IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW);
 	}
-	rx_status->device_timestamp = le32_to_cpu(desc->gp2_on_air_rise);
-	rx_status->band = desc->channel > 14 ? NL80211_BAND_5GHZ :
-					       NL80211_BAND_2GHZ;
-	rx_status->freq = ieee80211_channel_to_frequency(desc->channel,
+	rx_status->device_timestamp = gp2_on_air_rise;
+	rx_status->band = channel > 14 ? NL80211_BAND_5GHZ :
+		NL80211_BAND_2GHZ;
+	rx_status->freq = ieee80211_channel_to_frequency(channel,
 							 rx_status->band);
-	iwl_mvm_get_signal_strength(mvm, desc, rx_status);
+	iwl_mvm_get_signal_strength(mvm, rx_status, rate_n_flags, energy_a,
+				    energy_b);
 
 	/* update aggregation data for monitor sake on default queue */
 	if (!queue && (phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
 		bool toggle_bit = phy_info & IWL_RX_MPDU_PHY_AMPDU_TOGGLE;
+		u64 he_phy_data;
+
+		if (mvm->trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560)
+			he_phy_data = le64_to_cpu(desc->v3.he_phy_data);
+		else
+			he_phy_data = le64_to_cpu(desc->v1.he_phy_data);
 
 		rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
 		rx_status->ampdu_reference = mvm->ampdu_ref;
@@ -1027,7 +1071,7 @@ void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi,
 			    he_type == RATE_MCS_HE_TYPE_MU) {
 				rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
 				if (FIELD_GET(IWL_RX_HE_PHY_DELIM_EOF,
-					      le64_to_cpu(desc->he_phy_data)))
+					      he_phy_data))
 					rx_status->flag |=
 						RX_FLAG_AMPDU_EOF_BIT;
 			}
@@ -1327,12 +1371,19 @@ void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi,
 			break;
 		case RATE_MCS_HE_TYPE_MU: {
 			u16 val;
+			u64 he_phy_data;
+
+			if (mvm->trans->cfg->device_family >=
+			    IWL_DEVICE_FAMILY_22560)
+				he_phy_data = le64_to_cpu(desc->v3.he_phy_data);
+			else
+				he_phy_data = le64_to_cpu(desc->v1.he_phy_data);
 
 			if (he_phy_data == HE_PHY_DATA_INVAL)
 				break;
 
 			val = FIELD_GET(IWL_RX_HE_PHY_HE_LTF_NUM_MASK,
-					le64_to_cpu(desc->he_phy_data));
+					he_phy_data);
 
 			he->data2 |=
 				cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_NUM_LTF_SYMS_KNOWN);
-- 
2.18.0




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