[RFC 12/56] NAN: Add support for parsing device capability attributes

[Andrei Otcheretianski]

From: Ilan Peer <ilan.peer at intel.com>

Add support for parsing device capability attributes.

Signed-off-by: Ilan Peer <ilan.peer at intel.com>
---
 src/nan/nan.c   | 63 +++++++++++++++++++++++++++++++++++++++++++++++++
 src/nan/nan_i.h | 15 ++++++++++++
 2 files changed, 78 insertions(+)

diff --git a/src/nan/nan.c b/src/nan/nan.c
index e8797bcb1c..bf7bf34637 100644
--- a/src/nan/nan.c
+++ b/src/nan/nan.c
@@ -57,6 +57,17 @@ static void nan_peer_flush_avail(struct nan_peer_info *info)
 }
 
 
+static void nan_peer_flush_dev_capa(struct nan_peer_info *info)
+{
+	struct nan_dev_capa_entry *cur, *next;
+
+	dl_list_for_each_safe(cur, next, &info->dev_capa,
+			      struct nan_dev_capa_entry, list) {
+		dl_list_del(&cur->list);
+		os_free(cur);
+	}
+}
+
 static void nan_del_peer(struct nan_data *nan, struct nan_peer *peer)
 {
 	if (!peer)
@@ -87,6 +98,7 @@ static void nan_del_peer(struct nan_data *nan, struct nan_peer *peer)
 
 	dl_list_del(&peer->list);
 	nan_peer_flush_avail(&peer->info);
+	nan_peer_flush_dev_capa(&peer->info);
 	os_free(peer);
 }
 
@@ -778,6 +790,54 @@ out:
 }
 
 
+static void nan_parse_peer_device_capa(struct nan_data *nan,
+				       struct nan_peer *peer,
+				       const struct nan_attrs *attrs)
+{
+	struct nan_attrs_entry *attr;
+
+	dl_list_for_each(attr, &attrs->dev_capa, struct nan_attrs_entry, list) {
+		struct nan_device_capa *capa;
+		struct nan_dev_capa_entry *entry;
+		bool found = false;
+
+		capa = (void *)attr->ptr;
+
+		/* see if we already have an entry for this map id */
+		dl_list_for_each(entry, &peer->info.dev_capa,
+				 struct nan_dev_capa_entry, list) {
+
+			if (entry->map_id == capa->map_id) {
+				found = true;
+				break;
+			}
+		}
+
+		if (!found) {
+			entry = os_zalloc(sizeof(*entry));
+			if (!entry) {
+				wpa_printf(MSG_DEBUG,
+					   "NAN: Failed to allocate device capability entry");
+				return;
+			}
+
+			dl_list_init(&entry->list);
+			dl_list_add(&peer->info.dev_capa, &entry->list);
+		}
+
+		entry->map_id = capa->map_id;
+		entry->capa.cdw_info = le_to_host16(capa->cdw_info);
+		entry->capa.supported_bands = capa->supported_bands;
+		entry->capa.op_mode = capa->op_mode;
+		entry->capa.n_antennas = capa->ant;
+		entry->capa.channel_switch_time =
+			le_to_host16(capa->channel_switch_time);
+		entry->capa.capa = capa->capa;
+
+	}
+}
+
+
 /*
  * nan_parse_device_attrs - Parse device attributes and build availability info
  *
@@ -811,6 +871,8 @@ int nan_parse_device_attrs(struct nan_data *nan, struct nan_peer *peer,
 	}
 
 	nan_merge_peer_info(&peer->info, &info);
+	nan_parse_peer_device_capa(nan, peer, &attrs);
+
 	nan_peer_dump(nan, peer);
 	ret = 0;
 out:
@@ -855,6 +917,7 @@ static struct nan_peer *nan_alloc_peer(struct nan_data *nan)
 		return NULL;
 
 	dl_list_init(&peer->info.avail_entries);
+	dl_list_init(&peer->info.dev_capa);
 	dl_list_add(&nan->peer_list, &peer->list);
 	dl_list_init(&peer->ndps);
 	return peer;
diff --git a/src/nan/nan_i.h b/src/nan/nan_i.h
index f535c901b1..cd5a6697c3 100644
--- a/src/nan/nan_i.h
+++ b/src/nan/nan_i.h
@@ -159,17 +159,32 @@ struct nan_avail_entry {
 	struct nan_band_chan *band_chan;
 };
 
+/*
+ * struct nan_dev_capa_entry - NAN Device Capability entry
+ *
+ * @list: Used for linking in the device capabilities list.
+ * @map_id: Map id of the device capabilities.
+ * @capa: Device capabilities as specified by &struct nan_device_capabilities.
+ */
+struct nan_dev_capa_entry {
+	struct dl_list list;
+	u8 map_id;
+	struct nan_device_capabilities capa;
+};
+
 /*
  * struct nan_peer_info - NAN peer information
  *
  * @last_seen: Timestamp of the last update of the peer info.
  * @seq_id: Sequence id of the last availability update.
  * @avail_entries: List of availability entries of the peer.
+ * @dev_capa: List of device capabilities of the peer.
  */
 struct nan_peer_info {
 	struct os_reltime last_seen;
 	u8 seq_id;
 	struct dl_list avail_entries;
+	struct dl_list dev_capa;
 };
 
 /**
-- 
2.49.0