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Release 4.11 net/bluetooth/mgmt_util.c

Directory: net/bluetooth
/*
   BlueZ - Bluetooth protocol stack for Linux

   Copyright (C) 2015  Intel Corporation

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License version 2 as
   published by the Free Software Foundation;

   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
   OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
   IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
   CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
   WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

   ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
   COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
   SOFTWARE IS DISCLAIMED.
*/

#include <asm/unaligned.h>

#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
#include <net/bluetooth/hci_mon.h>
#include <net/bluetooth/mgmt.h>

#include "mgmt_util.h"


static struct sk_buff *create_monitor_ctrl_event(__le16 index, u32 cookie, u16 opcode, u16 len, void *buf) { struct hci_mon_hdr *hdr; struct sk_buff *skb; skb = bt_skb_alloc(6 + len, GFP_ATOMIC); if (!skb) return NULL; put_unaligned_le32(cookie, skb_put(skb, 4)); put_unaligned_le16(opcode, skb_put(skb, 2)); if (buf) memcpy(skb_put(skb, len), buf, len); __net_timestamp(skb); hdr = (void *)skb_push(skb, HCI_MON_HDR_SIZE); hdr->opcode = cpu_to_le16(HCI_MON_CTRL_EVENT); hdr->index = index; hdr->len = cpu_to_le16(skb->len - HCI_MON_HDR_SIZE); return skb; }

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Marcel Holtmann144100.00%1100.00%
Total144100.00%1100.00%


int mgmt_send_event(u16 event, struct hci_dev *hdev, unsigned short channel, void *data, u16 data_len, int flag, struct sock *skip_sk) { struct sk_buff *skb; struct mgmt_hdr *hdr; skb = alloc_skb(sizeof(*hdr) + data_len, GFP_KERNEL); if (!skb) return -ENOMEM; hdr = (void *) skb_put(skb, sizeof(*hdr)); hdr->opcode = cpu_to_le16(event); if (hdev) hdr->index = cpu_to_le16(hdev->id); else hdr->index = cpu_to_le16(MGMT_INDEX_NONE); hdr->len = cpu_to_le16(data_len); if (data) memcpy(skb_put(skb, data_len), data, data_len); /* Time stamp */ __net_timestamp(skb); hci_send_to_channel(channel, skb, flag, skip_sk); if (channel == HCI_CHANNEL_CONTROL) hci_send_monitor_ctrl_event(hdev, event, data, data_len, skb_get_ktime(skb), flag, skip_sk); kfree_skb(skb); return 0; }

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Johan Hedberg16986.67%150.00%
Marcel Holtmann2613.33%150.00%
Total195100.00%2100.00%


int mgmt_cmd_status(struct sock *sk, u16 index, u16 cmd, u8 status) { struct sk_buff *skb, *mskb; struct mgmt_hdr *hdr; struct mgmt_ev_cmd_status *ev; int err; BT_DBG("sock %p, index %u, cmd %u, status %u", sk, index, cmd, status); skb = alloc_skb(sizeof(*hdr) + sizeof(*ev), GFP_KERNEL); if (!skb) return -ENOMEM; hdr = (void *) skb_put(skb, sizeof(*hdr)); hdr->opcode = cpu_to_le16(MGMT_EV_CMD_STATUS); hdr->index = cpu_to_le16(index); hdr->len = cpu_to_le16(sizeof(*ev)); ev = (void *) skb_put(skb, sizeof(*ev)); ev->status = status; ev->opcode = cpu_to_le16(cmd); mskb = create_monitor_ctrl_event(hdr->index, hci_sock_get_cookie(sk), MGMT_EV_CMD_STATUS, sizeof(*ev), ev); if (mskb) skb->tstamp = mskb->tstamp; else __net_timestamp(skb); err = sock_queue_rcv_skb(sk, skb); if (err < 0) kfree_skb(skb); if (mskb) { hci_send_to_channel(HCI_CHANNEL_MONITOR, mskb, HCI_SOCK_TRUSTED, NULL); kfree_skb(mskb); } return err; }

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PersonTokensPropCommitsCommitProp
Johan Hedberg18172.98%150.00%
Marcel Holtmann6727.02%150.00%
Total248100.00%2100.00%


int mgmt_cmd_complete(struct sock *sk, u16 index, u16 cmd, u8 status, void *rp, size_t rp_len) { struct sk_buff *skb, *mskb; struct mgmt_hdr *hdr; struct mgmt_ev_cmd_complete *ev; int err; BT_DBG("sock %p", sk); skb = alloc_skb(sizeof(*hdr) + sizeof(*ev) + rp_len, GFP_KERNEL); if (!skb) return -ENOMEM; hdr = (void *) skb_put(skb, sizeof(*hdr)); hdr->opcode = cpu_to_le16(MGMT_EV_CMD_COMPLETE); hdr->index = cpu_to_le16(index); hdr->len = cpu_to_le16(sizeof(*ev) + rp_len); ev = (void *) skb_put(skb, sizeof(*ev) + rp_len); ev->opcode = cpu_to_le16(cmd); ev->status = status; if (rp) memcpy(ev->data, rp, rp_len); mskb = create_monitor_ctrl_event(hdr->index, hci_sock_get_cookie(sk), MGMT_EV_CMD_COMPLETE, sizeof(*ev) + rp_len, ev); if (mskb) skb->tstamp = mskb->tstamp; else __net_timestamp(skb); err = sock_queue_rcv_skb(sk, skb); if (err < 0) kfree_skb(skb); if (mskb) { hci_send_to_channel(HCI_CHANNEL_MONITOR, mskb, HCI_SOCK_TRUSTED, NULL); kfree_skb(mskb); } return err; }

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Johan Hedberg20374.63%150.00%
Marcel Holtmann6925.37%150.00%
Total272100.00%2100.00%


struct mgmt_pending_cmd *mgmt_pending_find(unsigned short channel, u16 opcode, struct hci_dev *hdev) { struct mgmt_pending_cmd *cmd; list_for_each_entry(cmd, &hdev->mgmt_pending, list) { if (hci_sock_get_channel(cmd->sk) != channel) continue; if (cmd->opcode == opcode) return cmd; } return NULL; }

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Johan Hedberg60100.00%1100.00%
Total60100.00%1100.00%


struct mgmt_pending_cmd *mgmt_pending_find_data(unsigned short channel, u16 opcode, struct hci_dev *hdev, const void *data) { struct mgmt_pending_cmd *cmd; list_for_each_entry(cmd, &hdev->mgmt_pending, list) { if (cmd->user_data != data) continue; if (cmd->opcode == opcode) return cmd; } return NULL; }

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PersonTokensPropCommitsCommitProp
Johan Hedberg62100.00%1100.00%
Total62100.00%1100.00%


void mgmt_pending_foreach(u16 opcode, struct hci_dev *hdev, void (*cb)(struct mgmt_pending_cmd *cmd, void *data), void *data) { struct mgmt_pending_cmd *cmd, *tmp; list_for_each_entry_safe(cmd, tmp, &hdev->mgmt_pending, list) { if (opcode > 0 && cmd->opcode != opcode) continue; cb(cmd, data); } }

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Johan Hedberg73100.00%1100.00%
Total73100.00%1100.00%


struct mgmt_pending_cmd *mgmt_pending_add(struct sock *sk, u16 opcode, struct hci_dev *hdev, void *data, u16 len) { struct mgmt_pending_cmd *cmd; cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); if (!cmd) return NULL; cmd->opcode = opcode; cmd->index = hdev->id; cmd->param = kmemdup(data, len, GFP_KERNEL); if (!cmd->param) { kfree(cmd); return NULL; } cmd->param_len = len; cmd->sk = sk; sock_hold(sk); list_add(&cmd->list, &hdev->mgmt_pending); return cmd; }

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Johan Hedberg130100.00%1100.00%
Total130100.00%1100.00%


void mgmt_pending_free(struct mgmt_pending_cmd *cmd) { sock_put(cmd->sk); kfree(cmd->param); kfree(cmd); }

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Johan Hedberg29100.00%1100.00%
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void mgmt_pending_remove(struct mgmt_pending_cmd *cmd) { list_del(&cmd->list); mgmt_pending_free(cmd); }

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Johan Hedberg23100.00%1100.00%
Total23100.00%1100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Johan Hedberg94375.14%150.00%
Marcel Holtmann31224.86%150.00%
Total1255100.00%2100.00%
Directory: net/bluetooth
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