wifi: rtw89: add use of pkt_list offload to debug entry

Driver can prepare pkt_list for firmware that only uses them to send out
the packets in specific situations. To understand the usage of current
status, and to check if there is leakage problem, dump bitmap and the
indices used by certain function.

An example looks like:

  map:
		...
        pkt_ofld:  3f 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ...
                [SCAN 0]: 3
                [SCAN 1]: 4
                [SCAN 3]: 5
  VIF [0] xx:xx:xx:xx:xx:xx
		...
        pkt_ofld[GENERAL]: 0 1 2
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230123065401.14174-4-pkshih@realtek.com

drivers/net/wireless/realtek/rtw89/debug.c

@@ -3354,6 +3354,31 @@ static void rtw89_dump_addr_cam(struct seq_file *m,
 	}
 }
 
+__printf(3, 4)
+static void rtw89_dump_pkt_offload(struct seq_file *m, struct list_head *pkt_list,
+				   const char *fmt, ...)
+{
+	struct rtw89_pktofld_info *info;
+	struct va_format vaf;
+	va_list args;
+
+	if (list_empty(pkt_list))
+		return;
+
+	va_start(args, fmt);
+	vaf.va = &args;
+	vaf.fmt = fmt;
+
+	seq_printf(m, "%pV", &vaf);
+
+	va_end(args);
+
+	list_for_each_entry(info, pkt_list, list)
+		seq_printf(m, "%d ", info->id);
+
+	seq_puts(m, "\n");
+}
+
 static
 void rtw89_vif_ids_get_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
 {
@@ -3364,6 +3389,7 @@ void rtw89_vif_ids_get_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
 	seq_printf(m, "VIF [%d] %pM\n", rtwvif->mac_id, rtwvif->mac_addr);
 	seq_printf(m, "\tbssid_cam_idx=%u\n", bssid_cam->bssid_cam_idx);
 	rtw89_dump_addr_cam(m, &rtwvif->addr_cam);
+	rtw89_dump_pkt_offload(m, &rtwvif->general_pkt_list, "\tpkt_ofld[GENERAL]: ");
 }
 
 static void rtw89_dump_ba_cam(struct seq_file *m, struct rtw89_sta *rtwsta)
@@ -3402,6 +3428,7 @@ static int rtw89_debug_priv_stations_get(struct seq_file *m, void *v)
 	struct rtw89_debugfs_priv *debugfs_priv = m->private;
 	struct rtw89_dev *rtwdev = debugfs_priv->rtwdev;
 	struct rtw89_cam_info *cam_info = &rtwdev->cam_info;
+	u8 idx;
 
 	mutex_lock(&rtwdev->mutex);
 
@@ -3416,6 +3443,15 @@ static int rtw89_debug_priv_stations_get(struct seq_file *m, void *v)
 		   cam_info->sec_cam_map);
 	seq_printf(m, "\tba_cam:    %*ph\n", (int)sizeof(cam_info->ba_cam_map),
 		   cam_info->ba_cam_map);
+	seq_printf(m, "\tpkt_ofld:  %*ph\n", (int)sizeof(rtwdev->pkt_offload),
+		   rtwdev->pkt_offload);
+
+	for (idx = NL80211_BAND_2GHZ; idx < NUM_NL80211_BANDS; idx++) {
+		if (!(rtwdev->chip->support_bands & BIT(idx)))
+			continue;
+		rtw89_dump_pkt_offload(m, &rtwdev->scan_info.pkt_list[idx],
+				       "\t\t[SCAN %u]: ", idx);
+	}
 
 	ieee80211_iterate_active_interfaces_atomic(rtwdev->hw,
 		IEEE80211_IFACE_ITER_NORMAL, rtw89_vif_ids_get_iter, m);