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[v3,1/7] Bluetooth: hci_core: Introduce hci_recv_event_data

Message ID 20220617221712.1394014-1-luiz.dentz@gmail.com
State Superseded
Headers show
Series [v3,1/7] Bluetooth: hci_core: Introduce hci_recv_event_data | expand

Commit Message

Luiz Augusto von Dentz June 17, 2022, 10:17 p.m. UTC 
From: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

This introduces hci_recv_event_data to make it simpler to access the
contents of last received event rather than having to pass its contents
to the likes of *_ind/*_cfm callbacks.

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
---
v2: Fixes CI/kernel test robot findings
v3: Fix crash when disabling ISO Socket experimental UUID.

 include/net/bluetooth/hci_core.h |  2 ++
 net/bluetooth/hci_core.c         | 32 ++++++++++++++++++++++++++++++++
 net/bluetooth/hci_event.c        |  3 +++
 3 files changed, 37 insertions(+)

Comments

bluez.test.bot@gmail.com June 17, 2022, 10:46 p.m. UTC | #1 
This is an automated email and please do not reply to this email.

Dear Submitter,

Thank you for submitting the patches to the linux bluetooth mailing list.
While preparing the CI tests, the patches you submitted couldn't be applied to the current HEAD of the repository.

----- Output -----
error: patch failed: include/net/bluetooth/hci_core.h:251
error: include/net/bluetooth/hci_core.h: patch does not apply
error: patch failed: net/bluetooth/hci_core.c:1700
error: net/bluetooth/hci_core.c: patch does not apply
hint: Use 'git am --show-current-patch' to see the failed patch


Please resolve the issue and submit the patches again.


---
Regards,
Linux Bluetooth
diff mbox series

Patch

diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 15237ee5f761..0ce57e1856e5 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -530,6 +530,7 @@  struct hci_dev {
 	struct sk_buff_head	cmd_q;
 
 	struct sk_buff		*sent_cmd;
+	struct sk_buff		*recv_event;
 
 	struct mutex		req_lock;
 	wait_queue_head_t	req_wait_q;
@@ -1755,6 +1756,7 @@  void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
 
 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
+void *hci_recv_event_data(struct hci_dev *hdev, __u8 event);
 
 u32 hci_conn_get_phy(struct hci_conn *conn);
 
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 05c13f639b94..1ff2c284e867 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -2739,6 +2739,7 @@  void hci_release_dev(struct hci_dev *hdev)
 
 	ida_simple_remove(&hci_index_ida, hdev->id);
 	kfree_skb(hdev->sent_cmd);
+	kfree_skb(hdev->recv_event);
 	kfree(hdev);
 }
 EXPORT_SYMBOL(hci_release_dev);
@@ -3045,6 +3046,37 @@  void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode)
 	return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE;
 }
 
+/* Get data from last received event */
+void *hci_recv_event_data(struct hci_dev *hdev, __u8 event)
+{
+	struct hci_event_hdr *hdr;
+	int offset;
+
+	if (!hdev->recv_event)
+		return NULL;
+
+	hdr = (void *)hdev->recv_event->data;
+	offset = sizeof(*hdr);
+
+	if (hdr->evt != event) {
+		/* In case of LE metaevent check the subevent match */
+		if (hdr->evt == HCI_EV_LE_META) {
+			struct hci_ev_le_meta *ev;
+
+			ev = (void *)hdev->recv_event->data + offset;
+			offset += sizeof(*ev);
+			if (ev->subevent == event)
+				goto found;
+		}
+		return NULL;
+	}
+
+found:
+	bt_dev_dbg(hdev, "event 0x%2.2x", event);
+
+	return hdev->recv_event->data + offset;
+}
+
 /* Send ACL data */
 static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags)
 {
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 34bec7446d00..2440275a143c 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -6936,6 +6936,9 @@  void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
 		goto done;
 	}
 
+	kfree_skb(hdev->recv_event);
+	hdev->recv_event = skb_clone(skb, GFP_KERNEL);
+
 	event = hdr->evt;
 	if (!event) {
 		bt_dev_warn(hdev, "Received unexpected HCI Event 0x%2.2x",