Bluetooth: Provide flags parameter direct to mgmt_device_found

Providing the flags parameter directly to mgmt_device_found function
makes the core simpler and more readable. With this it becomes a lot
easier to add new flags in the future.

This also changes hci_inquiry_cache_update to just return that flags
needed for mgmt_device_found since that is its only use for the two
return parameters anyway.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>

3 files changed, 45 insertions, 37 deletions

diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 237963d5473c..0aa392406629 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -35,6 +35,7 @@
 #include <net/bluetooth/bluetooth.h>
 #include <net/bluetooth/hci_core.h>
 #include <net/bluetooth/l2cap.h>
+#include <net/bluetooth/mgmt.h>
 
 #include "smp.h"
 
@@ -1970,22 +1971,24 @@ void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
         list_add(&ie->list, pos);
 }
 
-bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
-                              bool name_known, bool *ssp)
+u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
+                             bool name_known)
 {
         struct discovery_state *cache = &hdev->discovery;
         struct inquiry_entry *ie;
+        u32 flags = 0;
 
         BT_DBG("cache %p, %pMR", cache, &data->bdaddr);
 
         hci_remove_remote_oob_data(hdev, &data->bdaddr);
 
-        *ssp = data->ssp_mode;
+        if (!data->ssp_mode)
+                flags |= MGMT_DEV_FOUND_LEGACY_PAIRING;
 
         ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr);
         if (ie) {
-                if (ie->data.ssp_mode)
-                        *ssp = true;
+                if (!ie->data.ssp_mode)
+                        flags |= MGMT_DEV_FOUND_LEGACY_PAIRING;
 
                 if (ie->name_state == NAME_NEEDED &&
                     data->rssi != ie->data.rssi) {
@@ -1998,8 +2001,10 @@ bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
 
         /* Entry not in the cache. Add new one. */
         ie = kzalloc(sizeof(struct inquiry_entry), GFP_ATOMIC);
-        if (!ie)
-                return false;
+        if (!ie) {
+                flags |= MGMT_DEV_FOUND_CONFIRM_NAME;
+                goto done;
+        }
 
         list_add(&ie->all, &cache->all);
 
@@ -2022,9 +2027,10 @@ update:
         cache->timestamp = jiffies;
 
         if (ie->name_state == NAME_NOT_KNOWN)
-                return false;
+                flags |= MGMT_DEV_FOUND_CONFIRM_NAME;
 
-        return true;
+done:
+        return flags;
 }
 
 static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf)
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index ea155183c1d6..a4854a5d9298 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -1132,7 +1132,7 @@ static void hci_cc_le_set_scan_enable(struct hci_dev *hdev,
 
                         mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
                                           d->last_adv_addr_type, NULL,
-                                          d->last_adv_rssi, 0, 1,
+                                          d->last_adv_rssi, 0,
                                           d->last_adv_data,
                                           d->last_adv_data_len, NULL, 0);
                 }
@@ -1965,7 +1965,7 @@ static void hci_inquiry_result_evt(struct hci_dev *hdev, struct sk_buff *skb)
         hci_dev_lock(hdev);
 
         for (; num_rsp; num_rsp--, info++) {
-                bool name_known, ssp;
+                u32 flags;
 
                 bacpy(&data.bdaddr, &info->bdaddr);
                 data.pscan_rep_mode     = info->pscan_rep_mode;
@@ -1976,10 +1976,10 @@ static void hci_inquiry_result_evt(struct hci_dev *hdev, struct sk_buff *skb)
                 data.rssi               = 0x00;
                 data.ssp_mode           = 0x00;
 
-                name_known = hci_inquiry_cache_update(hdev, &data, false, &ssp);
+                flags = hci_inquiry_cache_update(hdev, &data, false);
+
                 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
-                                  info->dev_class, 0, !name_known, ssp, NULL,
-                                  0, NULL, 0);
+                                  info->dev_class, 0, flags, NULL, 0, NULL, 0);
         }
 
         hci_dev_unlock(hdev);
@@ -3257,7 +3257,6 @@ static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev,
 {
         struct inquiry_data data;
         int num_rsp = *((__u8 *) skb->data);
-        bool name_known, ssp;
 
         BT_DBG("%s num_rsp %d", hdev->name, num_rsp);
 
@@ -3274,6 +3273,8 @@ static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev,
                 info = (void *) (skb->data + 1);
 
                 for (; num_rsp; num_rsp--, info++) {
+                        u32 flags;
+
                         bacpy(&data.bdaddr, &info->bdaddr);
                         data.pscan_rep_mode     = info->pscan_rep_mode;
                         data.pscan_period_mode  = info->pscan_period_mode;
@@ -3283,16 +3284,18 @@ static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev,
                         data.rssi               = info->rssi;
                         data.ssp_mode           = 0x00;
 
-                        name_known = hci_inquiry_cache_update(hdev, &data,
-                                                              false, &ssp);
+                        flags = hci_inquiry_cache_update(hdev, &data, false);
+
                         mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
                                           info->dev_class, info->rssi,
-                                          !name_known, ssp, NULL, 0, NULL, 0);
+                                          flags, NULL, 0, NULL, 0);
                 }
         } else {
                 struct inquiry_info_with_rssi *info = (void *) (skb->data + 1);
 
                 for (; num_rsp; num_rsp--, info++) {
+                        u32 flags;
+
                         bacpy(&data.bdaddr, &info->bdaddr);
                         data.pscan_rep_mode     = info->pscan_rep_mode;
                         data.pscan_period_mode  = info->pscan_period_mode;
@@ -3301,11 +3304,12 @@ static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev,
                         data.clock_offset       = info->clock_offset;
                         data.rssi               = info->rssi;
                         data.ssp_mode           = 0x00;
-                        name_known = hci_inquiry_cache_update(hdev, &data,
-                                                              false, &ssp);
+
+                        flags = hci_inquiry_cache_update(hdev, &data, false);
+
                         mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
                                           info->dev_class, info->rssi,
-                                          !name_known, ssp, NULL, 0, NULL, 0);
+                                          flags, NULL, 0, NULL, 0);
                 }
         }
 
@@ -3472,7 +3476,8 @@ static void hci_extended_inquiry_result_evt(struct hci_dev *hdev,
         hci_dev_lock(hdev);
 
         for (; num_rsp; num_rsp--, info++) {
-                bool name_known, ssp;
+                u32 flags;
+                bool name_known;
 
                 bacpy(&data.bdaddr, &info->bdaddr);
                 data.pscan_rep_mode     = info->pscan_rep_mode;
@@ -3490,12 +3495,13 @@ static void hci_extended_inquiry_result_evt(struct hci_dev *hdev,
                 else
                         name_known = true;
 
-                name_known = hci_inquiry_cache_update(hdev, &data, name_known,
-                                                      &ssp);
+                flags = hci_inquiry_cache_update(hdev, &data, name_known);
+
                 eir_len = eir_get_length(info->data, sizeof(info->data));
+
                 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
-                                  info->dev_class, info->rssi, !name_known,
-                                  ssp, info->data, eir_len, NULL, 0);
+                                  info->dev_class, info->rssi,
+                                  flags, info->data, eir_len, NULL, 0);
         }
 
         hci_dev_unlock(hdev);
@@ -4226,7 +4232,7 @@ static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
                 }
 
                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
-                                  rssi, 0, 1, data, len, NULL, 0);
+                                  rssi, 0, data, len, NULL, 0);
                 return;
         }
 
@@ -4243,7 +4249,7 @@ static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
                 if (!match)
                         mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
                                           d->last_adv_addr_type, NULL,
-                                          d->last_adv_rssi, 0, 1,
+                                          d->last_adv_rssi, 0,
                                           d->last_adv_data,
                                           d->last_adv_data_len, NULL, 0);
 
@@ -4261,7 +4267,7 @@ static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
                  */
                 clear_pending_adv_report(hdev);
                 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
-                                  rssi, 0, 1, data, len, NULL, 0);
+                                  rssi, 0, data, len, NULL, 0);
                 return;
         }
 
@@ -4270,7 +4276,7 @@ static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
          * sending a merged device found event.
          */
         mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
-                          d->last_adv_addr_type, NULL, rssi, 0, 1,
+                          d->last_adv_addr_type, NULL, rssi, 0,
                           d->last_adv_data, d->last_adv_data_len, data, len);
         clear_pending_adv_report(hdev);
 }
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index c6e9b551242b..336a2311bdca 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -6233,9 +6233,8 @@ void mgmt_read_local_oob_data_complete(struct hci_dev *hdev, u8 *hash192,
 }
 
 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
-                       u8 addr_type, u8 *dev_class, s8 rssi, u8 cfm_name,
-                       u8 ssp, u8 *eir, u16 eir_len, u8 *scan_rsp,
-                       u8 scan_rsp_len)
+                       u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
+                       u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len)
 {
         char buf[512];
         struct mgmt_ev_device_found *ev = (void *) buf;
@@ -6263,10 +6262,7 @@ void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
         }
 
         ev->rssi = rssi;
-        if (cfm_name)
-                ev->flags |= cpu_to_le32(MGMT_DEV_FOUND_CONFIRM_NAME);
-        if (!ssp)
-                ev->flags |= cpu_to_le32(MGMT_DEV_FOUND_LEGACY_PAIRING);
+        ev->flags = cpu_to_le32(flags);
 
         if (eir_len > 0)
                 memcpy(ev->eir, eir, eir_len);