mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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106 lines
2.6 KiB
C
106 lines
2.6 KiB
C
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// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (C) 2025 Google Corporation
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*/
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#include <linux/skbuff.h>
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#include <linux/types.h>
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#include <net/bluetooth/bluetooth.h>
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#include <net/bluetooth/hci.h>
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#include <net/bluetooth/hci_core.h>
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#include <net/bluetooth/hci_drv.h>
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int hci_drv_cmd_status(struct hci_dev *hdev, u16 cmd, u8 status)
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{
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struct hci_drv_ev_hdr *hdr;
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struct hci_drv_ev_cmd_status *ev;
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struct sk_buff *skb;
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skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*ev), GFP_KERNEL);
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if (!skb)
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return -ENOMEM;
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hdr = skb_put(skb, sizeof(*hdr));
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hdr->opcode = __cpu_to_le16(HCI_DRV_EV_CMD_STATUS);
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hdr->len = __cpu_to_le16(sizeof(*ev));
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ev = skb_put(skb, sizeof(*ev));
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ev->opcode = __cpu_to_le16(cmd);
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ev->status = status;
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hci_skb_pkt_type(skb) = HCI_DRV_PKT;
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return hci_recv_frame(hdev, skb);
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}
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EXPORT_SYMBOL(hci_drv_cmd_status);
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int hci_drv_cmd_complete(struct hci_dev *hdev, u16 cmd, u8 status, void *rp,
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size_t rp_len)
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{
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struct hci_drv_ev_hdr *hdr;
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struct hci_drv_ev_cmd_complete *ev;
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struct sk_buff *skb;
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skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*ev) + rp_len, GFP_KERNEL);
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if (!skb)
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return -ENOMEM;
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hdr = skb_put(skb, sizeof(*hdr));
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hdr->opcode = __cpu_to_le16(HCI_DRV_EV_CMD_COMPLETE);
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hdr->len = __cpu_to_le16(sizeof(*ev) + rp_len);
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ev = skb_put(skb, sizeof(*ev));
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ev->opcode = __cpu_to_le16(cmd);
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ev->status = status;
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skb_put_data(skb, rp, rp_len);
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hci_skb_pkt_type(skb) = HCI_DRV_PKT;
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return hci_recv_frame(hdev, skb);
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}
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EXPORT_SYMBOL(hci_drv_cmd_complete);
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int hci_drv_process_cmd(struct hci_dev *hdev, struct sk_buff *skb)
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{
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struct hci_drv_cmd_hdr *hdr;
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const struct hci_drv_handler *handler = NULL;
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u16 opcode, len, ogf, ocf;
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hdr = skb_pull_data(skb, sizeof(*hdr));
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if (!hdr)
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return -EILSEQ;
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opcode = __le16_to_cpu(hdr->opcode);
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len = __le16_to_cpu(hdr->len);
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if (len != skb->len)
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return -EILSEQ;
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ogf = hci_opcode_ogf(opcode);
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ocf = hci_opcode_ocf(opcode);
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if (!hdev->hci_drv)
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return hci_drv_cmd_status(hdev, opcode,
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HCI_DRV_STATUS_UNKNOWN_COMMAND);
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if (ogf != HCI_DRV_OGF_DRIVER_SPECIFIC) {
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if (opcode < hdev->hci_drv->common_handler_count)
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handler = &hdev->hci_drv->common_handlers[opcode];
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} else {
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if (ocf < hdev->hci_drv->specific_handler_count)
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handler = &hdev->hci_drv->specific_handlers[ocf];
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}
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if (!handler || !handler->func)
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return hci_drv_cmd_status(hdev, opcode,
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HCI_DRV_STATUS_UNKNOWN_COMMAND);
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if (len != handler->data_len)
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return hci_drv_cmd_status(hdev, opcode,
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HCI_DRV_STATUS_INVALID_PARAMETERS);
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return handler->func(hdev, skb->data, len);
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}
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EXPORT_SYMBOL(hci_drv_process_cmd);
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