Commit 99811510 authored by Suraj Sumangala's avatar Suraj Sumangala Committed by Marcel Holtmann
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Bluetooth: Implemented HCI frame reassembly for RX from stream 



Implemented frame reassembly implementation for reassembling fragments
received from stream.

Signed-off-by: default avatarSuraj Sumangala <suraj@atheros.com>
Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
parent f39a3c06

include/net/bluetooth/hci_core.h

+1 −0
Original line number Diff line number Diff line
@@ -437,6 +437,7 @@ void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb); 


int hci_recv_frame(struct sk_buff *skb);

int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);

int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);



int hci_register_sysfs(struct hci_dev *hdev);

void hci_unregister_sysfs(struct hci_dev *hdev);

net/bluetooth/hci_core.c

+35 −0
Original line number Diff line number Diff line
@@ -1163,6 +1163,41 @@ int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count) 
}

EXPORT_SYMBOL(hci_recv_fragment);



#define STREAM_REASSEMBLY 0



int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count)

{

	int type;

	int rem = 0;



	do {

		struct sk_buff *skb = hdev->reassembly[STREAM_REASSEMBLY];



		if (!skb) {

			struct { char type; } *pkt;



			/* Start of the frame */

			pkt = data;

			type = pkt->type;



			data++;

			count--;

		} else

			type = bt_cb(skb)->pkt_type;



		rem = hci_reassembly(hdev, type, data,

					count, STREAM_REASSEMBLY, GFP_ATOMIC);

		if (rem < 0)

			return rem;



		data += (count - rem);

		count = rem;

	} while (count);



	return rem;

}

EXPORT_SYMBOL(hci_recv_stream_fragment);



/* ---- Interface to upper protocols ---- */



/* Register/Unregister protocols.