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Subject[PATCH 1/6] Bluetooth: Add helper to set adv data
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We wish to handle advertising data separately from advertising
parameters in our new MGMT requests. This change adds a helper that
allows the advertising data and scan response to be updated for an
existing advertising instance.

Reviewed-by: Sonny Sasaka <sonnysasaka@chromium.org>
Signed-off-by: Daniel Winkler <danielwinkler@google.com>
---

include/net/bluetooth/hci_core.h | 3 +++
net/bluetooth/hci_core.c | 31 +++++++++++++++++++++++++++++++
2 files changed, 34 insertions(+)

diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 9873e1c8cd163b..300b3572d479e1 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -1291,6 +1291,9 @@ int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags,
u16 adv_data_len, u8 *adv_data,
u16 scan_rsp_len, u8 *scan_rsp_data,
u16 timeout, u16 duration);
+int hci_set_adv_instance_data(struct hci_dev *hdev, u8 instance,
+ u16 adv_data_len, u8 *adv_data,
+ u16 scan_rsp_len, u8 *scan_rsp_data);
int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired);

diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 8a2645a8330137..3f73f147826409 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -3005,6 +3005,37 @@ int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags,
return 0;
}

+/* This function requires the caller holds hdev->lock */
+int hci_set_adv_instance_data(struct hci_dev *hdev, u8 instance,
+ u16 adv_data_len, u8 *adv_data,
+ u16 scan_rsp_len, u8 *scan_rsp_data)
+{
+ struct adv_info *adv_instance;
+
+ adv_instance = hci_find_adv_instance(hdev, instance);
+
+ /* If advertisement doesn't exist, we can't modify its data */
+ if (!adv_instance)
+ return -ENOENT;
+
+ if (adv_data_len) {
+ memset(adv_instance->adv_data, 0,
+ sizeof(adv_instance->adv_data));
+ memcpy(adv_instance->adv_data, adv_data, adv_data_len);
+ adv_instance->adv_data_len = adv_data_len;
+ }
+
+ if (scan_rsp_len) {
+ memset(adv_instance->scan_rsp_data, 0,
+ sizeof(adv_instance->scan_rsp_data));
+ memcpy(adv_instance->scan_rsp_data,
+ scan_rsp_data, scan_rsp_len);
+ adv_instance->scan_rsp_len = scan_rsp_len;
+ }
+
+ return 0;
+}
+
/* This function requires the caller holds hdev->lock */
void hci_adv_monitors_clear(struct hci_dev *hdev)
{
--
2.28.0.618.gf4bc123cb7-goog
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