From 32c8a21b7da2397da204015f4bf45983226cbed9 Mon Sep 17 00:00:00 2001
From: Marcel Holtmann <marcel@holtmann.org>
Date: Thu, 13 Jan 2005 20:16:40 +0000
Subject: Add function for reading the RSSI and the link quality

---
 include/hci.h     |  6 +++---
 include/hci_lib.h |  2 ++
 src/hci.c         | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 55 insertions(+), 3 deletions(-)

diff --git a/include/hci.h b/include/hci.h
index 683c988f..54bb8849 100644
--- a/include/hci.h
+++ b/include/hci.h
@@ -791,13 +791,13 @@ typedef struct {
 } __attribute__ ((packed)) reset_failed_contact_counter_rp;
 #define RESET_FAILED_CONTACT_COUNTER_RP_SIZE 4
 
-#define OCF_GET_LINK_QUALITY		0x0003
+#define OCF_READ_LINK_QUALITY		0x0003
 typedef struct {
 	uint8_t		status;
 	uint16_t	handle;
 	uint8_t		link_quality;
-} __attribute__ ((packed)) get_link_quality_rp;
-#define GET_LINK_QUALITY_RP_SIZE 4
+} __attribute__ ((packed)) read_link_quality_rp;
+#define READ_LINK_QUALITY_RP_SIZE 4
 
 #define OCF_READ_RSSI			0x0005
 typedef struct {
diff --git a/include/hci_lib.h b/include/hci_lib.h
index 5c83b5e8..969db1f2 100644
--- a/include/hci_lib.h
+++ b/include/hci_lib.h
@@ -92,6 +92,8 @@ int hci_write_inquiry_mode(int dd, uint8_t mode, int to);
 int hci_read_afh_mode(int dd, uint8_t *mode, int to);
 int hci_write_afh_mode(int dd, uint8_t mode, int to);
 int hci_set_afh_classification(int dd, uint8_t *map, int to);
+int hci_read_link_quality(int dd, uint16_t handle, uint8_t *link_quality, int to);
+int hci_read_rssi(int dd, uint16_t handle, int8_t *rssi, int to);
 int hci_read_afh_map(int dd, uint16_t handle, uint8_t *mode, uint8_t *map, int to);
 
 int hci_for_each_dev(int flag, int(*func)(int s, int dev_id, long arg), long arg);
diff --git a/src/hci.c b/src/hci.c
index 5d11309f..63a79d06 100644
--- a/src/hci.c
+++ b/src/hci.c
@@ -1460,6 +1460,56 @@ int hci_set_afh_classification(int dd, uint8_t *map, int to)
 	return 0;
 }
 
+int hci_read_link_quality(int dd, uint16_t handle, uint8_t *link_quality, int to)
+{
+	read_link_quality_rp rp;
+	struct hci_request rq;
+
+	memset(&rq, 0, sizeof(rq));
+	rq.ogf    = OGF_STATUS_PARAM;
+	rq.ocf    = OCF_READ_LINK_QUALITY;
+	rq.cparam = &handle;
+	rq.clen   = 2;
+	rq.rparam = &rp;
+	rq.rlen   = READ_LINK_QUALITY_RP_SIZE;
+
+	if (hci_send_req(dd, &rq, to) < 0)
+		return -1;
+
+	if (rp.status) {
+		errno = EIO;
+		return -1;
+	}
+
+	*link_quality = rp.link_quality;
+	return 0;
+}
+
+int hci_read_rssi(int dd, uint16_t handle, int8_t *rssi, int to)
+{
+	read_rssi_rp rp;
+	struct hci_request rq;
+
+	memset(&rq, 0, sizeof(rq));
+	rq.ogf    = OGF_STATUS_PARAM;
+	rq.ocf    = OCF_READ_RSSI;
+	rq.cparam = &handle;
+	rq.clen   = 2;
+	rq.rparam = &rp;
+	rq.rlen   = READ_RSSI_RP_SIZE;
+
+	if (hci_send_req(dd, &rq, to) < 0)
+		return -1;
+
+	if (rp.status) {
+		errno = EIO;
+		return -1;
+	}
+
+	*rssi = rp.rssi;
+	return 0;
+}
+
 int hci_read_afh_map(int dd, uint16_t handle, uint8_t *mode, uint8_t *map, int to)
 {
 	read_afh_map_rp rp;
-- 
cgit