diff options
| author | Ying Hsu <yinghsu@chromium.org> | 2024-05-29 08:00:00 +0000 |
|---|---|---|
| committer | Luiz Augusto von Dentz <luiz.von.dentz@intel.com> | 2024-07-14 21:34:32 -0400 |
| commit | f25b7fd36cc3a850e006aed686f5bbecd200de1b (patch) | |
| tree | 5fca456d8faadd2bb70f620889d975bf785d2742 /net/bluetooth | |
| parent | d4cc4ee48167b4c25abf49ead19412c29a1ad9f4 (diff) | |
Bluetooth: Add vendor-specific packet classification for ISO data
When HCI raw sockets are opened, the Bluetooth kernel module doesn't
track CIS/BIS connections. User-space applications have to identify
ISO data by maintaining connection information and look up the mapping
for each ACL data packet received. Besides, btsnoop log captured in
kernel couldn't tell ISO data from ACL data in this case.
To avoid additional lookups, this patch introduces vendor-specific
packet classification for Intel BT controllers to distinguish
ISO data packets from ACL data packets.
Signed-off-by: Ying Hsu <yinghsu@chromium.org>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Diffstat (limited to 'net/bluetooth')
| -rw-r--r-- | net/bluetooth/hci_core.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c index 55bdc365916f..144e85ebfbdb 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -2909,15 +2909,31 @@ int hci_reset_dev(struct hci_dev *hdev) } EXPORT_SYMBOL(hci_reset_dev); +static u8 hci_dev_classify_pkt_type(struct hci_dev *hdev, struct sk_buff *skb) +{ + if (hdev->classify_pkt_type) + return hdev->classify_pkt_type(hdev, skb); + + return hci_skb_pkt_type(skb); +} + /* Receive frame from HCI drivers */ int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb) { + u8 dev_pkt_type; + if (!hdev || (!test_bit(HCI_UP, &hdev->flags) && !test_bit(HCI_INIT, &hdev->flags))) { kfree_skb(skb); return -ENXIO; } + /* Check if the driver agree with packet type classification */ + dev_pkt_type = hci_dev_classify_pkt_type(hdev, skb); + if (hci_skb_pkt_type(skb) != dev_pkt_type) { + hci_skb_pkt_type(skb) = dev_pkt_type; + } + switch (hci_skb_pkt_type(skb)) { case HCI_EVENT_PKT: break; |