[PATCH v3 1/2] wifi: iwlwifi: Report link-id for transmitted frames.

[greearb@xxxxxxxxxxxxxxx]

From: Ben Greear <greearb@xxxxxxxxxxxxxxx>

This will let upper stack properly record stats per link.

Signed-off-by: Ben Greear <greearb@xxxxxxxxxxxxxxx>
---

v2:  Fix rcu locking

v3:  Fix missing v2 change text
     Fix long lines
     Fix |= that should have been '=' assignment in replace_bits logic.

 drivers/net/wireless/intel/iwlwifi/mvm/tx.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/tx.c b/drivers/net/wireless/intel/iwlwifi/mvm/tx.c
index ca026b5256ce..f5b469647a35 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/tx.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/tx.c
@@ -1709,6 +1709,14 @@ static void iwl_mvm_rx_tx_cmd_single(struct iwl_mvm *mvm,
 	u8 lq_color;
 	u16 next_reclaimed, seq_ctl;
 	bool is_ndp = false;
+	struct ieee80211_link_sta *link_sta;
+	int link_sta_id = -1;
+
+	rcu_read_lock();
+	link_sta = rcu_dereference(mvm->fw_id_to_link_sta[sta_id]);
+	if (link_sta)
+		link_sta_id = link_sta->link_id;
+	rcu_read_unlock();
 
 	__skb_queue_head_init(&skbs);
 
@@ -1732,6 +1740,10 @@ static void iwl_mvm_rx_tx_cmd_single(struct iwl_mvm *mvm,
 
 		memset(&info->status, 0, sizeof(info->status));
 		info->flags &= ~(IEEE80211_TX_STAT_ACK | IEEE80211_TX_STAT_TX_FILTERED);
+		if (link_sta_id != -1)
+			info->control.flags = u32_replace_bits(info->control.flags,
+							       link_sta_id,
+							       IEEE80211_TX_CTRL_MLO_LINK);
 
 		/* inform mac80211 about what happened with the frame */
 		switch (status & TX_STATUS_MSK) {
@@ -2048,6 +2060,7 @@ static void iwl_mvm_tx_reclaim(struct iwl_mvm *mvm, int sta_id, int tid,
 	struct iwl_mvm_sta *mvmsta = NULL;
 	struct sk_buff *skb;
 	int freed;
+	struct ieee80211_link_sta *link_sta;
 
 	if (WARN_ONCE(sta_id >= mvm->fw->ucode_capa.num_stations ||
 		      tid > IWL_MAX_TID_COUNT,
@@ -2064,6 +2077,8 @@ static void iwl_mvm_tx_reclaim(struct iwl_mvm *mvm, int sta_id, int tid,
 		return;
 	}
 
+	link_sta = rcu_dereference(mvm->fw_id_to_link_sta[sta_id]);
+
 	__skb_queue_head_init(&reclaimed_skbs);
 
 	/*
@@ -2087,6 +2102,11 @@ static void iwl_mvm_tx_reclaim(struct iwl_mvm *mvm, int sta_id, int tid,
 			info->flags |= IEEE80211_TX_STAT_ACK;
 		else
 			info->flags &= ~IEEE80211_TX_STAT_ACK;
+
+		if (link_sta)
+			info->control.flags = u32_replace_bits(info->control.flags,
+							       link_sta->link_id,
+							       IEEE80211_TX_CTRL_MLO_LINK);
 	}
 
 	/*
-- 
2.42.0