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Bluetooth: Add generic mgmt helper API
There are several mgmt protocol features that will be needed by more than just the current HCI_CHANNEL_CONTROL. These include sending generic events as well as handling pending commands. This patch moves these functions out from mgmt.c to a new mgmt_util.c file. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Johan Hedberg
Marcel Holtmann
parent
333ae95d05
commit
a380b6cff1
4 changed files with 265 additions and 197 deletions
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@ -13,7 +13,7 @@ bluetooth_6lowpan-y := 6lowpan.o
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bluetooth-y := af_bluetooth.o hci_core.o hci_conn.o hci_event.o mgmt.o \
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hci_sock.o hci_sysfs.o l2cap_core.o l2cap_sock.o smp.o sco.o lib.o \
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a2mp.o amp.o ecc.o hci_request.o
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a2mp.o amp.o ecc.o hci_request.o mgmt_util.o
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bluetooth-$(CONFIG_BT_DEBUGFS) += hci_debugfs.o
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bluetooth-$(CONFIG_BT_SELFTEST) += selftest.o
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@ -35,6 +35,7 @@
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#include "hci_request.h"
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#include "smp.h"
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#include "mgmt_util.h"
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#define MGMT_VERSION 1
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#define MGMT_REVISION 9
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@ -141,17 +142,6 @@ static const u16 mgmt_events[] = {
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#define ZERO_KEY "\x00\x00\x00\x00\x00\x00\x00\x00" \
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"\x00\x00\x00\x00\x00\x00\x00\x00"
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struct mgmt_pending_cmd {
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struct list_head list;
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u16 opcode;
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int index;
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void *param;
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size_t param_len;
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struct sock *sk;
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void *user_data;
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int (*cmd_complete)(struct mgmt_pending_cmd *cmd, u8 status);
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};
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/* HCI to MGMT error code conversion table */
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static u8 mgmt_status_table[] = {
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MGMT_STATUS_SUCCESS,
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@ -225,37 +215,6 @@ static u8 mgmt_status(u8 hci_status)
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return MGMT_STATUS_FAILED;
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}
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static int mgmt_send_event(u16 event, struct hci_dev *hdev,
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unsigned short channel, void *data, u16 data_len,
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int flag, struct sock *skip_sk)
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{
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struct sk_buff *skb;
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struct mgmt_hdr *hdr;
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skb = alloc_skb(sizeof(*hdr) + data_len, GFP_KERNEL);
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if (!skb)
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return -ENOMEM;
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hdr = (void *) skb_put(skb, sizeof(*hdr));
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hdr->opcode = cpu_to_le16(event);
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if (hdev)
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hdr->index = cpu_to_le16(hdev->id);
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else
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hdr->index = cpu_to_le16(MGMT_INDEX_NONE);
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hdr->len = cpu_to_le16(data_len);
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if (data)
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memcpy(skb_put(skb, data_len), data, data_len);
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/* Time stamp */
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__net_timestamp(skb);
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hci_send_to_channel(channel, skb, flag, skip_sk);
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kfree_skb(skb);
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return 0;
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}
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static int mgmt_index_event(u16 event, struct hci_dev *hdev, void *data,
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u16 len, int flag)
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{
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@ -284,70 +243,6 @@ static int mgmt_event(u16 event, struct hci_dev *hdev, void *data, u16 len,
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HCI_SOCK_TRUSTED, skip_sk);
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}
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static int mgmt_cmd_status(struct sock *sk, u16 index, u16 cmd, u8 status)
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{
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struct sk_buff *skb;
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struct mgmt_hdr *hdr;
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struct mgmt_ev_cmd_status *ev;
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int err;
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BT_DBG("sock %p, index %u, cmd %u, status %u", sk, index, cmd, status);
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skb = alloc_skb(sizeof(*hdr) + sizeof(*ev), GFP_KERNEL);
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if (!skb)
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return -ENOMEM;
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hdr = (void *) skb_put(skb, sizeof(*hdr));
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hdr->opcode = cpu_to_le16(MGMT_EV_CMD_STATUS);
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hdr->index = cpu_to_le16(index);
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hdr->len = cpu_to_le16(sizeof(*ev));
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ev = (void *) skb_put(skb, sizeof(*ev));
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ev->status = status;
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ev->opcode = cpu_to_le16(cmd);
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err = sock_queue_rcv_skb(sk, skb);
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if (err < 0)
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kfree_skb(skb);
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return err;
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}
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static int mgmt_cmd_complete(struct sock *sk, u16 index, u16 cmd, u8 status,
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void *rp, size_t rp_len)
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{
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struct sk_buff *skb;
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struct mgmt_hdr *hdr;
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struct mgmt_ev_cmd_complete *ev;
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int err;
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BT_DBG("sock %p", sk);
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skb = alloc_skb(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 = (void *) skb_put(skb, sizeof(*hdr));
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hdr->opcode = cpu_to_le16(MGMT_EV_CMD_COMPLETE);
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hdr->index = cpu_to_le16(index);
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hdr->len = cpu_to_le16(sizeof(*ev) + rp_len);
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ev = (void *) skb_put(skb, sizeof(*ev) + rp_len);
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ev->opcode = cpu_to_le16(cmd);
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ev->status = status;
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if (rp)
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memcpy(ev->data, rp, rp_len);
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err = sock_queue_rcv_skb(sk, skb);
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if (err < 0)
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kfree_skb(skb);
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return err;
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}
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static int read_version(struct sock *sk, struct hci_dev *hdev, void *data,
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u16 data_len)
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{
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@ -882,44 +777,11 @@ static u8 *create_uuid128_list(struct hci_dev *hdev, u8 *data, ptrdiff_t len)
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return ptr;
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}
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static struct mgmt_pending_cmd *mgmt_pending_find(unsigned short channel,
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u16 opcode,
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struct hci_dev *hdev)
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{
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struct mgmt_pending_cmd *cmd;
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list_for_each_entry(cmd, &hdev->mgmt_pending, list) {
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if (hci_sock_get_channel(cmd->sk) != channel)
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continue;
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if (cmd->opcode == opcode)
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return cmd;
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}
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return NULL;
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}
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static struct mgmt_pending_cmd *pending_find(u16 opcode, struct hci_dev *hdev)
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{
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return mgmt_pending_find(HCI_CHANNEL_CONTROL, opcode, hdev);
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}
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static struct mgmt_pending_cmd *mgmt_pending_find_data(unsigned short channel,
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u16 opcode,
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struct hci_dev *hdev,
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const void *data)
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{
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struct mgmt_pending_cmd *cmd;
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list_for_each_entry(cmd, &hdev->mgmt_pending, list) {
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if (cmd->user_data != data)
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continue;
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if (cmd->opcode == opcode)
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return cmd;
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}
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return NULL;
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}
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static struct mgmt_pending_cmd *pending_find_data(u16 opcode,
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struct hci_dev *hdev,
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const void *data)
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@ -1341,63 +1203,6 @@ static int read_controller_info(struct sock *sk, struct hci_dev *hdev,
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sizeof(rp));
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}
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static void mgmt_pending_free(struct mgmt_pending_cmd *cmd)
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{
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sock_put(cmd->sk);
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kfree(cmd->param);
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kfree(cmd);
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}
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static struct mgmt_pending_cmd *mgmt_pending_add(struct sock *sk, u16 opcode,
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struct hci_dev *hdev,
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void *data, u16 len)
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{
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struct mgmt_pending_cmd *cmd;
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cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
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if (!cmd)
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return NULL;
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cmd->opcode = opcode;
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cmd->index = hdev->id;
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cmd->param = kmemdup(data, len, GFP_KERNEL);
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if (!cmd->param) {
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kfree(cmd);
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return NULL;
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}
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cmd->param_len = len;
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cmd->sk = sk;
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sock_hold(sk);
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list_add(&cmd->list, &hdev->mgmt_pending);
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return cmd;
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}
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static void mgmt_pending_foreach(u16 opcode, struct hci_dev *hdev,
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void (*cb)(struct mgmt_pending_cmd *cmd,
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void *data),
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void *data)
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{
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struct mgmt_pending_cmd *cmd, *tmp;
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list_for_each_entry_safe(cmd, tmp, &hdev->mgmt_pending, list) {
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if (opcode > 0 && cmd->opcode != opcode)
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continue;
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cb(cmd, data);
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}
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}
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static void mgmt_pending_remove(struct mgmt_pending_cmd *cmd)
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{
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list_del(&cmd->list);
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mgmt_pending_free(cmd);
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}
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static int send_settings_rsp(struct sock *sk, u16 opcode, struct hci_dev *hdev)
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{
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__le32 settings = cpu_to_le32(get_current_settings(hdev));
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210
net/bluetooth/mgmt_util.c
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210
net/bluetooth/mgmt_util.c
Normal file
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@ -0,0 +1,210 @@
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/*
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BlueZ - Bluetooth protocol stack for Linux
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Copyright (C) 2015 Intel Corporation
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License version 2 as
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published by the Free Software Foundation;
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
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IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
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CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
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COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
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SOFTWARE IS DISCLAIMED.
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*/
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#include <net/bluetooth/bluetooth.h>
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#include <net/bluetooth/hci_core.h>
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#include <net/bluetooth/mgmt.h>
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#include "mgmt_util.h"
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int mgmt_send_event(u16 event, struct hci_dev *hdev, unsigned short channel,
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void *data, u16 data_len, int flag, struct sock *skip_sk)
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{
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struct sk_buff *skb;
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struct mgmt_hdr *hdr;
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skb = alloc_skb(sizeof(*hdr) + data_len, GFP_KERNEL);
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if (!skb)
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return -ENOMEM;
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hdr = (void *) skb_put(skb, sizeof(*hdr));
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hdr->opcode = cpu_to_le16(event);
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if (hdev)
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hdr->index = cpu_to_le16(hdev->id);
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else
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hdr->index = cpu_to_le16(MGMT_INDEX_NONE);
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hdr->len = cpu_to_le16(data_len);
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if (data)
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memcpy(skb_put(skb, data_len), data, data_len);
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/* Time stamp */
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__net_timestamp(skb);
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hci_send_to_channel(channel, skb, flag, skip_sk);
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kfree_skb(skb);
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return 0;
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}
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int mgmt_cmd_status(struct sock *sk, u16 index, u16 cmd, u8 status)
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{
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struct sk_buff *skb;
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struct mgmt_hdr *hdr;
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struct mgmt_ev_cmd_status *ev;
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int err;
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BT_DBG("sock %p, index %u, cmd %u, status %u", sk, index, cmd, status);
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skb = alloc_skb(sizeof(*hdr) + sizeof(*ev), GFP_KERNEL);
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if (!skb)
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return -ENOMEM;
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hdr = (void *) skb_put(skb, sizeof(*hdr));
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hdr->opcode = cpu_to_le16(MGMT_EV_CMD_STATUS);
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hdr->index = cpu_to_le16(index);
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hdr->len = cpu_to_le16(sizeof(*ev));
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ev = (void *) skb_put(skb, sizeof(*ev));
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ev->status = status;
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ev->opcode = cpu_to_le16(cmd);
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err = sock_queue_rcv_skb(sk, skb);
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if (err < 0)
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kfree_skb(skb);
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return err;
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}
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int mgmt_cmd_complete(struct sock *sk, u16 index, u16 cmd, u8 status,
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void *rp, size_t rp_len)
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{
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struct sk_buff *skb;
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struct mgmt_hdr *hdr;
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struct mgmt_ev_cmd_complete *ev;
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int err;
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BT_DBG("sock %p", sk);
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skb = alloc_skb(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 = (void *) skb_put(skb, sizeof(*hdr));
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hdr->opcode = cpu_to_le16(MGMT_EV_CMD_COMPLETE);
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hdr->index = cpu_to_le16(index);
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hdr->len = cpu_to_le16(sizeof(*ev) + rp_len);
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ev = (void *) skb_put(skb, sizeof(*ev) + rp_len);
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ev->opcode = cpu_to_le16(cmd);
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ev->status = status;
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if (rp)
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memcpy(ev->data, rp, rp_len);
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err = sock_queue_rcv_skb(sk, skb);
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if (err < 0)
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kfree_skb(skb);
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return err;
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}
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struct mgmt_pending_cmd *mgmt_pending_find(unsigned short channel, u16 opcode,
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struct hci_dev *hdev)
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{
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struct mgmt_pending_cmd *cmd;
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list_for_each_entry(cmd, &hdev->mgmt_pending, list) {
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if (hci_sock_get_channel(cmd->sk) != channel)
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continue;
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if (cmd->opcode == opcode)
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return cmd;
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}
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return NULL;
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}
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struct mgmt_pending_cmd *mgmt_pending_find_data(unsigned short channel,
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u16 opcode,
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struct hci_dev *hdev,
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const void *data)
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{
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struct mgmt_pending_cmd *cmd;
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list_for_each_entry(cmd, &hdev->mgmt_pending, list) {
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if (cmd->user_data != data)
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continue;
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if (cmd->opcode == opcode)
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return cmd;
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}
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return NULL;
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}
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void mgmt_pending_foreach(u16 opcode, struct hci_dev *hdev,
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void (*cb)(struct mgmt_pending_cmd *cmd, void *data),
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void *data)
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{
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struct mgmt_pending_cmd *cmd, *tmp;
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list_for_each_entry_safe(cmd, tmp, &hdev->mgmt_pending, list) {
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if (opcode > 0 && cmd->opcode != opcode)
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continue;
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cb(cmd, data);
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}
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}
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struct mgmt_pending_cmd *mgmt_pending_add(struct sock *sk, u16 opcode,
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struct hci_dev *hdev,
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void *data, u16 len)
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{
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struct mgmt_pending_cmd *cmd;
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cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
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if (!cmd)
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return NULL;
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cmd->opcode = opcode;
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cmd->index = hdev->id;
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cmd->param = kmemdup(data, len, GFP_KERNEL);
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if (!cmd->param) {
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kfree(cmd);
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return NULL;
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}
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cmd->param_len = len;
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cmd->sk = sk;
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sock_hold(sk);
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list_add(&cmd->list, &hdev->mgmt_pending);
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return cmd;
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}
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void mgmt_pending_free(struct mgmt_pending_cmd *cmd)
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{
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sock_put(cmd->sk);
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kfree(cmd->param);
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kfree(cmd);
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}
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void mgmt_pending_remove(struct mgmt_pending_cmd *cmd)
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{
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list_del(&cmd->list);
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mgmt_pending_free(cmd);
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}
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53
net/bluetooth/mgmt_util.h
Normal file
53
net/bluetooth/mgmt_util.h
Normal file
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@ -0,0 +1,53 @@
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/*
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BlueZ - Bluetooth protocol stack for Linux
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Copyright (C) 2015 Intel Coropration
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This program is free software; you can redistribute it and/or modify
|
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it under the terms of the GNU General Public License version 2 as
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published by the Free Software Foundation;
|
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|
||||
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.
|
||||
*/
|
||||
|
||||
struct mgmt_pending_cmd {
|
||||
struct list_head list;
|
||||
u16 opcode;
|
||||
int index;
|
||||
void *param;
|
||||
size_t param_len;
|
||||
struct sock *sk;
|
||||
void *user_data;
|
||||
int (*cmd_complete)(struct mgmt_pending_cmd *cmd, u8 status);
|
||||
};
|
||||
|
||||
int mgmt_send_event(u16 event, struct hci_dev *hdev, unsigned short channel,
|
||||
void *data, u16 data_len, int flag, struct sock *skip_sk);
|
||||
int mgmt_cmd_status(struct sock *sk, u16 index, u16 cmd, u8 status);
|
||||
int mgmt_cmd_complete(struct sock *sk, u16 index, u16 cmd, u8 status,
|
||||
void *rp, size_t rp_len);
|
||||
|
||||
struct mgmt_pending_cmd *mgmt_pending_find(unsigned short channel, u16 opcode,
|
||||
struct hci_dev *hdev);
|
||||
struct mgmt_pending_cmd *mgmt_pending_find_data(unsigned short channel,
|
||||
u16 opcode,
|
||||
struct hci_dev *hdev,
|
||||
const void *data);
|
||||
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 *mgmt_pending_add(struct sock *sk, u16 opcode,
|
||||
struct hci_dev *hdev,
|
||||
void *data, u16 len);
|
||||
void mgmt_pending_free(struct mgmt_pending_cmd *cmd);
|
||||
void mgmt_pending_remove(struct mgmt_pending_cmd *cmd);
|
||||
Loading…
Reference in a new issue