* [RFC v1 obexd 01/11] fuse: Add initial obexfuse files, fuse main and options parse
From: Michał Poczwardowski @ 2012-10-21 17:05 UTC (permalink / raw)
To: linux-bluetooth; +Cc: Michał Poczwardowski
---
fuse/helpers.c | 55 +++++++++++++++++++++++++
fuse/helpers.h | 49 ++++++++++++++++++++++
fuse/obexfuse.c | 119 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 223 insertions(+), 0 deletions(-)
create mode 100644 fuse/helpers.c
create mode 100644 fuse/helpers.h
create mode 100644 fuse/obexfuse.c
diff --git a/fuse/helpers.c b/fuse/helpers.c
new file mode 100644
index 0000000..53bba57
--- /dev/null
+++ b/fuse/helpers.c
@@ -0,0 +1,55 @@
+/*
+ * OBEX Filesystem in Userspace
+ *
+ * Copyright (C) 2012 Michał Poczwardowski <dmp0x7c5@gmail.com>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ */
+
+#include <gobex/gobex.h>
+#include <btio/btio.h>
+
+#include <glib.h>
+#include <fcntl.h>
+#include <errno.h>
+
+#include <bluetooth/bluetooth.h>
+#include <bluetooth/rfcomm.h>
+#include <bluetooth/sdp.h>
+#include <bluetooth/sdp_lib.h>
+
+#define BT_RX_MTU 32767
+#define BT_TX_MTU 32767
+
+#include "helpers.h"
+
+#define OBEX_FTP_UUID \
+ "\xF9\xEC\x7B\xC4\x95\x3C\x11\xD2\x98\x4E\x52\x54\x00\xDC\x9E\x09"
+#define OBEX_FTP_UUID_LEN 16
+
+#define OBEX_FTP_LS "x-obex/folder-listing"
+
+struct gobexhlp_request {
+ gchar *name;
+ gboolean complete;
+};
+
+struct gobexhlp_location {
+ gchar *dir;
+ gchar *file;
+};
+
diff --git a/fuse/helpers.h b/fuse/helpers.h
new file mode 100644
index 0000000..21972b2
--- /dev/null
+++ b/fuse/helpers.h
@@ -0,0 +1,49 @@
+/*
+ * OBEX Filesystem in Userspace
+ *
+ * Copyright (C) 2012 Michał Poczwardowski <dmp0x7c5@gmail.com>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ */
+
+#include <gobex/gobex.h>
+#include <glib.h>
+
+struct gobexhlp_request;
+
+struct gobexhlp_buffer {
+ void *data;
+ gsize tmpsize;
+ gsize size;
+ gboolean edited;
+};
+
+struct gobexhlp_session {
+ GObex *obex;
+ GList *lsfiles;
+ GIOChannel *io;
+ GHashTable *file_stat;
+ gchar *setpath;
+ struct gobexhlp_request *request;
+ struct gobexhlp_buffer *buffer;
+ gboolean vtouch;
+ gchar *vtouch_path;
+ gboolean rtouch;
+ int status;
+ GError *err;
+};
+
diff --git a/fuse/obexfuse.c b/fuse/obexfuse.c
new file mode 100644
index 0000000..fe4f4da
--- /dev/null
+++ b/fuse/obexfuse.c
@@ -0,0 +1,119 @@
+/*
+ * OBEX Filesystem in Userspace
+ *
+ * Copyright (C) 2012 Michał Poczwardowski <dmp0x7c5@gmail.com>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ */
+
+#define FUSE_USE_VERSION 26
+
+#include <stdio.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <fuse.h>
+#include <fuse/fuse_opt.h>
+
+#include "helpers.h"
+
+struct options {
+ char* dststr;
+ char* srcstr;
+} options;
+
+#define GOBEXFUSE_OPT_KEY(t, p, v) { t, offsetof(struct options, p), v }
+
+enum
+{
+ KEY_VERSION,
+ KEY_HELP,
+};
+
+static struct fuse_opt obexfuse_opts[] =
+{
+ GOBEXFUSE_OPT_KEY("--target=%s",dststr, 0),
+ GOBEXFUSE_OPT_KEY("-t %s", dststr, 0),
+ GOBEXFUSE_OPT_KEY("--source=%s",srcstr, 0),
+ GOBEXFUSE_OPT_KEY("-s %s", srcstr, 0),
+
+ FUSE_OPT_KEY("-V", KEY_VERSION),
+ FUSE_OPT_KEY("--version", KEY_VERSION),
+ FUSE_OPT_KEY("-h", KEY_HELP),
+ FUSE_OPT_KEY("--help", KEY_HELP),
+ FUSE_OPT_END
+};
+
+static struct fuse_operations obexfuse_oper = {
+};
+
+static int obexfuse_opt_proc(void *data, const char *arg, int key,
+ struct fuse_args *outargs)
+{
+ switch (key) {
+ case KEY_HELP:
+ g_printerr("Usage: %s mountpoint [options]\n"
+ "\n"
+ "general options:\n"
+ " -o opt,[opt...] mount options\n"
+ " -h --help print help\n"
+ " -V --version print version\n"
+ "\n"
+ "obexfuse options:\n"
+ " -t --target target btaddr "
+ "(mandatory)\n"
+ " -s --source source btaddr\n"
+ "\n"
+ , outargs->argv[0]);
+ fuse_opt_add_arg(outargs, "-ho");
+ fuse_main(outargs->argc, outargs->argv, &obexfuse_oper, NULL);
+ exit(1);
+ case KEY_VERSION:
+ g_print("obexfuse upon:\n");
+ fuse_opt_add_arg(outargs, "--version");
+ fuse_main(outargs->argc, outargs->argv, &obexfuse_oper, NULL);
+ exit(0);
+ }
+ return 1;
+}
+
+int main(int argc, char *argv[])
+{
+ int retfuse;
+ struct fuse_args args = FUSE_ARGS_INIT(argc, argv);
+
+ memset(&options, 0, sizeof(struct options));
+
+ if (fuse_opt_parse(&args, &options, obexfuse_opts,
+ obexfuse_opt_proc) == -1)
+ return -EINVAL;
+
+ if (options.dststr == NULL) {
+ g_printerr("Target not specified\n");
+ return -EINVAL;
+ }
+
+ g_thread_init(NULL);
+
+ fuse_opt_add_arg(&args, "-s"); /* force single threaded mode */
+ retfuse = fuse_main(args.argc, args.argv, &obexfuse_oper, NULL);
+
+ fuse_opt_free_args(&args);
+ return retfuse;
+}
--
1.7.8.6
^ permalink raw reply related
* [PATCHv4 18/18] Bluetooth: Start channel move when socket option is changed
From: Mat Martineau @ 2012-10-19 21:34 UTC (permalink / raw)
To: linux-bluetooth, gustavo; +Cc: sunnyk, marcel, andrei.emeltchenko.news
In-Reply-To: <1350682449-24818-1-git-send-email-mathewm@codeaurora.org>
Channel moves are triggered by changes to the BT_CHANNEL_POLICY
sockopt when an ERTM or streaming-mode channel is connected.
Moves are only started if enable_hs is true.
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
---
include/net/bluetooth/l2cap.h | 1 +
net/bluetooth/l2cap_core.c | 19 +++++++++++++++++++
net/bluetooth/l2cap_sock.c | 5 +++++
3 files changed, 25 insertions(+)
diff --git a/include/net/bluetooth/l2cap.h b/include/net/bluetooth/l2cap.h
index b4c3c65..49783e9 100644
--- a/include/net/bluetooth/l2cap.h
+++ b/include/net/bluetooth/l2cap.h
@@ -809,5 +809,6 @@ void l2cap_chan_add(struct l2cap_conn *conn, struct l2cap_chan *chan);
void __l2cap_chan_add(struct l2cap_conn *conn, struct l2cap_chan *chan);
void l2cap_chan_del(struct l2cap_chan *chan, int err);
void l2cap_send_conn_req(struct l2cap_chan *chan);
+void l2cap_move_start(struct l2cap_chan *chan);
#endif /* __L2CAP_H */
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index d6fe7bf..88c5743 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -4461,6 +4461,25 @@ static void l2cap_logical_cfm(struct l2cap_chan *chan, struct hci_chan *hchan,
}
}
+void l2cap_move_start(struct l2cap_chan *chan)
+{
+ BT_DBG("chan %p", chan);
+
+ if (chan->local_amp_id == HCI_BREDR_ID) {
+ if (chan->chan_policy != BT_CHANNEL_POLICY_AMP_PREFERRED)
+ return;
+ chan->move_role = L2CAP_MOVE_ROLE_INITIATOR;
+ chan->move_state = L2CAP_MOVE_WAIT_PREPARE;
+ /* Placeholder - start physical link setup */
+ } else {
+ chan->move_role = L2CAP_MOVE_ROLE_INITIATOR;
+ chan->move_state = L2CAP_MOVE_WAIT_RSP_SUCCESS;
+ chan->move_id = 0;
+ l2cap_move_setup(chan);
+ l2cap_send_move_chan_req(chan, 0);
+ }
+}
+
static void l2cap_do_create(struct l2cap_chan *chan, int result,
u8 local_amp_id, u8 remote_amp_id)
{
diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c
index 5fae2bd..7cb4d73 100644
--- a/net/bluetooth/l2cap_sock.c
+++ b/net/bluetooth/l2cap_sock.c
@@ -735,6 +735,11 @@ static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname,
}
chan->chan_policy = (u8) opt;
+
+ if (sk->sk_state == BT_CONNECTED &&
+ chan->move_role == L2CAP_MOVE_ROLE_NONE)
+ l2cap_move_start(chan);
+
break;
default:
--
1.7.12.3
--
Mat Martineau
Employee of Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
^ permalink raw reply related
* [PATCHv4 17/18] Bluetooth: Do not retransmit data during a channel move
From: Mat Martineau @ 2012-10-19 21:34 UTC (permalink / raw)
To: linux-bluetooth, gustavo; +Cc: sunnyk, marcel, andrei.emeltchenko.news
In-Reply-To: <1350682449-24818-1-git-send-email-mathewm@codeaurora.org>
Do not retransmit previously-sent data when a "receiver ready" s-frame
with the "final" flag is received during a move.
The ERTM state machines will resynchronize at the end of a channel
move, and the state machine needs to avoid state changes during a
move.
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
---
net/bluetooth/l2cap_core.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index 84ab0db..d6fe7bf 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -5602,8 +5602,8 @@ static int l2cap_rx_state_recv(struct l2cap_chan *chan,
if (control->final) {
clear_bit(CONN_REMOTE_BUSY, &chan->conn_state);
- if (!test_and_clear_bit(CONN_REJ_ACT,
- &chan->conn_state)) {
+ if (!test_and_clear_bit(CONN_REJ_ACT, &chan->conn_state) &&
+ !__chan_is_moving(chan)) {
control->final = 0;
l2cap_retransmit_all(chan, control);
}
--
1.7.12.3
--
Mat Martineau
Employee of Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
^ permalink raw reply related
* [PATCHv4 16/18] Bluetooth: Ignore BR/EDR packet size constraints when fragmenting for AMP
From: Mat Martineau @ 2012-10-19 21:34 UTC (permalink / raw)
To: linux-bluetooth, gustavo
Cc: sunnyk, marcel, andrei.emeltchenko.news, Andrei Emeltchenko
In-Reply-To: <1350682449-24818-1-git-send-email-mathewm@codeaurora.org>
When operating over BR/EDR, ERTM accounts for the maximum over-the-air
packet size when setting the PDU size. AMP controllers do not use the
same over-the-air packets, so the PDU size should only be based on the
HCI MTU of the AMP controller.
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
---
net/bluetooth/l2cap_core.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index 2d3fc42..84ab0db 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -2285,7 +2285,9 @@ static int l2cap_segment_sdu(struct l2cap_chan *chan,
/* PDU size is derived from the HCI MTU */
pdu_len = chan->conn->mtu;
- pdu_len = min_t(size_t, pdu_len, L2CAP_BREDR_MAX_PAYLOAD);
+ /* Constrain PDU size for BR/EDR connections */
+ if (!chan->hs_hcon)
+ pdu_len = min_t(size_t, pdu_len, L2CAP_BREDR_MAX_PAYLOAD);
/* Adjust for largest possible L2CAP overhead. */
if (chan->fcs)
--
1.7.12.3
--
Mat Martineau
Employee of Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
^ permalink raw reply related
* [PATCHv4 15/18] Bluetooth: Configure appropriate timeouts for AMP controllers
From: Mat Martineau @ 2012-10-19 21:34 UTC (permalink / raw)
To: linux-bluetooth, gustavo; +Cc: sunnyk, marcel, andrei.emeltchenko.news
In-Reply-To: <1350682449-24818-1-git-send-email-mathewm@codeaurora.org>
The L2CAP spec recommends specific retransmit and monitor timeouts for
ERTM channels that are on AMP controllers. These timeouts are
calculated from the AMP controller's best effort flush timeout.
BR/EDR controllers use the default retransmit and monitor timeouts.
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
---
net/bluetooth/l2cap_core.c | 47 ++++++++++++++++++++++++++++++++++++++++------
1 file changed, 41 insertions(+), 6 deletions(-)
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index 4995462..2d3fc42 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -2980,6 +2980,44 @@ static inline bool __l2cap_efs_supported(struct l2cap_chan *chan)
return enable_hs && chan->conn->feat_mask & L2CAP_FEAT_EXT_FLOW;
}
+static void __l2cap_set_ertm_timeouts(struct l2cap_chan *chan,
+ struct l2cap_conf_rfc *rfc)
+{
+ if (chan->local_amp_id && chan->hs_hcon) {
+ u64 ertm_to = chan->hs_hcon->hdev->amp_be_flush_to;
+
+ /* Class 1 devices have must have ERTM timeouts
+ * exceeding the Link Supervision Timeout. The
+ * default Link Supervision Timeout for AMP
+ * controllers is 10 seconds.
+ *
+ * Class 1 devices use 0xffffffff for their
+ * best-effort flush timeout, so the clamping logic
+ * will result in a timeout that meets the above
+ * requirement. ERTM timeouts are 16-bit values, so
+ * the maximum timeout is 65.535 seconds.
+ */
+
+ /* Convert timeout to milliseconds and round */
+ ertm_to = DIV_ROUND_UP_ULL(ertm_to, 1000);
+
+ /* This is the recommended formula for class 2 devices
+ * that start ERTM timers when packets are sent to the
+ * controller.
+ */
+ ertm_to = 3 * ertm_to + 500;
+
+ if (ertm_to > 0xffff)
+ ertm_to = 0xffff;
+
+ rfc->retrans_timeout = cpu_to_le16((u16) ertm_to);
+ rfc->monitor_timeout = rfc->retrans_timeout;
+ } else {
+ rfc->retrans_timeout = __constant_cpu_to_le16(L2CAP_DEFAULT_RETRANS_TO);
+ rfc->monitor_timeout = __constant_cpu_to_le16(L2CAP_DEFAULT_MONITOR_TO);
+ }
+}
+
static inline void l2cap_txwin_setup(struct l2cap_chan *chan)
{
if (chan->tx_win > L2CAP_DEFAULT_TX_WINDOW &&
@@ -3046,8 +3084,8 @@ done:
case L2CAP_MODE_ERTM:
rfc.mode = L2CAP_MODE_ERTM;
rfc.max_transmit = chan->max_tx;
- rfc.retrans_timeout = 0;
- rfc.monitor_timeout = 0;
+
+ __l2cap_set_ertm_timeouts(chan, &rfc);
size = min_t(u16, L2CAP_DEFAULT_MAX_PDU_SIZE, chan->conn->mtu -
L2CAP_EXT_HDR_SIZE - L2CAP_SDULEN_SIZE -
@@ -3275,10 +3313,7 @@ done:
rfc.max_pdu_size = cpu_to_le16(size);
chan->remote_mps = size;
- rfc.retrans_timeout =
- __constant_cpu_to_le16(L2CAP_DEFAULT_RETRANS_TO);
- rfc.monitor_timeout =
- __constant_cpu_to_le16(L2CAP_DEFAULT_MONITOR_TO);
+ __l2cap_set_ertm_timeouts(chan, &rfc);
set_bit(CONF_MODE_DONE, &chan->conf_state);
--
1.7.12.3
--
Mat Martineau
Employee of Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
^ permalink raw reply related
* [PATCHv4 14/18] Bluetooth: Do not send data during channel move
From: Mat Martineau @ 2012-10-19 21:34 UTC (permalink / raw)
To: linux-bluetooth, gustavo; +Cc: sunnyk, marcel, andrei.emeltchenko.news
In-Reply-To: <1350682449-24818-1-git-send-email-mathewm@codeaurora.org>
Outgoing ERTM data is queued during a channel move. The ERTM state
machine is partially reset at the start of a move, and must be
resynchronized with the remote state machine at the end of the move.
Data is not sent so that there are no state transitions between the
partial reset and the resync.
Streaming mode frames are dropped during a move.
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
---
net/bluetooth/l2cap_core.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index bf02b14..4995462 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -946,6 +946,9 @@ static void l2cap_send_sframe(struct l2cap_chan *chan,
if (!control->sframe)
return;
+ if (__chan_is_moving(chan))
+ return;
+
if (test_and_clear_bit(CONN_SEND_FBIT, &chan->conn_state) &&
!control->poll)
control->final = 1;
@@ -1824,6 +1827,9 @@ static void l2cap_streaming_send(struct l2cap_chan *chan,
BT_DBG("chan %p, skbs %p", chan, skbs);
+ if (__chan_is_moving(chan))
+ return;
+
skb_queue_splice_tail_init(skbs, &chan->tx_q);
while (!skb_queue_empty(&chan->tx_q)) {
@@ -1866,6 +1872,9 @@ static int l2cap_ertm_send(struct l2cap_chan *chan)
if (test_bit(CONN_REMOTE_BUSY, &chan->conn_state))
return 0;
+ if (__chan_is_moving(chan))
+ return 0;
+
while (chan->tx_send_head &&
chan->unacked_frames < chan->remote_tx_win &&
chan->tx_state == L2CAP_TX_STATE_XMIT) {
@@ -1931,6 +1940,9 @@ static void l2cap_ertm_resend(struct l2cap_chan *chan)
if (test_bit(CONN_REMOTE_BUSY, &chan->conn_state))
return;
+ if (__chan_is_moving(chan))
+ return;
+
while (chan->retrans_list.head != L2CAP_SEQ_LIST_CLEAR) {
seq = l2cap_seq_list_pop(&chan->retrans_list);
--
1.7.12.3
--
Mat Martineau
Employee of Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
^ permalink raw reply related
* [PATCHv4 13/18] Bluetooth: Flag ACL frames as complete for AMP controllers
From: Mat Martineau @ 2012-10-19 21:34 UTC (permalink / raw)
To: linux-bluetooth, gustavo; +Cc: sunnyk, marcel, andrei.emeltchenko.news
In-Reply-To: <1350682449-24818-1-git-send-email-mathewm@codeaurora.org>
AMP controllers expect to transmit only "complete" ACL frames. These
frames have both the "start" and "cont" bits set. AMP does not allow
fragmented ACLs.
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
---
net/bluetooth/l2cap_core.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index 8ab49c6..bf02b14 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -762,6 +762,15 @@ static void l2cap_do_send(struct l2cap_chan *chan, struct sk_buff *skb)
BT_DBG("chan %p, skb %p len %d priority %u", chan, skb, skb->len,
skb->priority);
+ if (chan->hs_hcon && !__chan_is_moving(chan)) {
+ if (chan->hs_hchan)
+ hci_send_acl(chan->hs_hchan, skb, ACL_COMPLETE);
+ else
+ kfree_skb(skb);
+
+ return;
+ }
+
if (!test_bit(FLAG_FLUSHABLE, &chan->flags) &&
lmp_no_flush_capable(hcon->hdev))
flags = ACL_START_NO_FLUSH;
--
1.7.12.3
--
Mat Martineau
Employee of Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
^ permalink raw reply related
* [PATCHv4 12/18] Bluetooth: Handle physical link completion
From: Mat Martineau @ 2012-10-19 21:34 UTC (permalink / raw)
To: linux-bluetooth, gustavo; +Cc: sunnyk, marcel, andrei.emeltchenko.news
In-Reply-To: <1350682449-24818-1-git-send-email-mathewm@codeaurora.org>
Several different actions may be taken when an AMP physical link
becomes available. A channel being created on an AMP controller must
continue the connection process. A channel being moved needs to
either send a move request or a move response. A failed physical link
will revert to using a BR/EDR controller if possible.
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
---
net/bluetooth/l2cap_core.c | 164 +++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 164 insertions(+)
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index 71afb03..8ab49c6 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -1015,6 +1015,19 @@ void l2cap_send_conn_req(struct l2cap_chan *chan)
l2cap_send_cmd(conn, chan->ident, L2CAP_CONN_REQ, sizeof(req), &req);
}
+static void l2cap_send_create_chan_req(struct l2cap_chan *chan, u8 amp_id)
+{
+ struct l2cap_create_chan_req req;
+ req.scid = cpu_to_le16(chan->scid);
+ req.psm = chan->psm;
+ req.amp_id = amp_id;
+
+ chan->ident = l2cap_get_ident(chan->conn);
+
+ l2cap_send_cmd(chan->conn, chan->ident, L2CAP_CREATE_CHAN_REQ,
+ sizeof(req), &req);
+}
+
static void l2cap_move_setup(struct l2cap_chan *chan)
{
struct sk_buff *skb;
@@ -4199,6 +4212,25 @@ static int l2cap_create_channel_req(struct l2cap_conn *conn,
return 0;
}
+static void l2cap_send_move_chan_req(struct l2cap_chan *chan, u8 dest_amp_id)
+{
+ struct l2cap_move_chan_req req;
+ u8 ident;
+
+ BT_DBG("chan %p, dest_amp_id %d", chan, dest_amp_id);
+
+ ident = l2cap_get_ident(chan->conn);
+ chan->ident = ident;
+
+ req.icid = cpu_to_le16(chan->scid);
+ req.dest_amp_id = dest_amp_id;
+
+ l2cap_send_cmd(chan->conn, ident, L2CAP_MOVE_CHAN_REQ, sizeof(req),
+ &req);
+
+ __set_chan_timer(chan, L2CAP_MOVE_TIMEOUT);
+}
+
static void l2cap_send_move_chan_rsp(struct l2cap_chan *chan, u16 result)
{
struct l2cap_move_chan_rsp rsp;
@@ -4371,6 +4403,138 @@ static void l2cap_logical_cfm(struct l2cap_chan *chan, struct hci_chan *hchan,
}
}
+static void l2cap_do_create(struct l2cap_chan *chan, int result,
+ u8 local_amp_id, u8 remote_amp_id)
+{
+ if (!test_bit(CONF_CONNECT_PEND, &chan->conf_state)) {
+ struct l2cap_conn_rsp rsp;
+ char buf[128];
+ rsp.scid = cpu_to_le16(chan->dcid);
+ rsp.dcid = cpu_to_le16(chan->scid);
+
+ /* Incoming channel on AMP */
+ if (result == L2CAP_CR_SUCCESS) {
+ /* Send successful response */
+ rsp.result = cpu_to_le16(L2CAP_CR_SUCCESS);
+ rsp.status = cpu_to_le16(L2CAP_CS_NO_INFO);
+ } else {
+ /* Send negative response */
+ rsp.result = cpu_to_le16(L2CAP_CR_NO_MEM);
+ rsp.status = cpu_to_le16(L2CAP_CS_NO_INFO);
+ }
+
+ l2cap_send_cmd(chan->conn, chan->ident, L2CAP_CREATE_CHAN_RSP,
+ sizeof(rsp), &rsp);
+
+ if (result == L2CAP_CR_SUCCESS) {
+ __l2cap_state_change(chan, BT_CONFIG);
+ set_bit(CONF_REQ_SENT, &chan->conf_state);
+ l2cap_send_cmd(chan->conn, l2cap_get_ident(chan->conn),
+ L2CAP_CONF_REQ,
+ l2cap_build_conf_req(chan, buf), buf);
+ chan->num_conf_req++;
+ }
+ } else {
+ /* Outgoing channel on AMP */
+ if (result == L2CAP_CR_SUCCESS) {
+ chan->local_amp_id = local_amp_id;
+ l2cap_send_create_chan_req(chan, remote_amp_id);
+ } else {
+ /* Revert to BR/EDR connect */
+ l2cap_send_conn_req(chan);
+ }
+ }
+}
+
+static void l2cap_do_move_initiate(struct l2cap_chan *chan, u8 local_amp_id,
+ u8 remote_amp_id)
+{
+ l2cap_move_setup(chan);
+ chan->move_id = local_amp_id;
+ chan->move_state = L2CAP_MOVE_WAIT_RSP;
+
+ l2cap_send_move_chan_req(chan, remote_amp_id);
+}
+
+static void l2cap_do_move_respond(struct l2cap_chan *chan, int result)
+{
+ struct hci_chan *hchan = NULL;
+
+ /* Placeholder - get hci_chan for logical link */
+
+ if (hchan) {
+ if (hchan->state == BT_CONNECTED) {
+ /* Logical link is ready to go */
+ chan->hs_hcon = hchan->conn;
+ chan->hs_hcon->l2cap_data = chan->conn;
+ chan->move_state = L2CAP_MOVE_WAIT_CONFIRM;
+ l2cap_send_move_chan_rsp(chan, L2CAP_MR_SUCCESS);
+
+ l2cap_logical_cfm(chan, hchan, L2CAP_MR_SUCCESS);
+ } else {
+ /* Wait for logical link to be ready */
+ chan->move_state = L2CAP_MOVE_WAIT_LOGICAL_CFM;
+ }
+ } else {
+ /* Logical link not available */
+ l2cap_send_move_chan_rsp(chan, L2CAP_MR_NOT_ALLOWED);
+ }
+}
+
+static void l2cap_do_move_cancel(struct l2cap_chan *chan, int result)
+{
+ if (chan->move_role == L2CAP_MOVE_ROLE_RESPONDER) {
+ u8 rsp_result;
+ if (result == -EINVAL)
+ rsp_result = L2CAP_MR_BAD_ID;
+ else
+ rsp_result = L2CAP_MR_NOT_ALLOWED;
+
+ l2cap_send_move_chan_rsp(chan, rsp_result);
+ }
+
+ chan->move_role = L2CAP_MOVE_ROLE_NONE;
+ chan->move_state = L2CAP_MOVE_STABLE;
+
+ /* Restart data transmission */
+ l2cap_ertm_send(chan);
+}
+
+void l2cap_physical_cfm(struct l2cap_chan *chan, int result, u8 local_amp_id,
+ u8 remote_amp_id)
+{
+ BT_DBG("chan %p, result %d, local_amp_id %d, remote_amp_id %d",
+ chan, result, local_amp_id, remote_amp_id);
+
+ l2cap_chan_lock(chan);
+
+ if (chan->state == BT_DISCONN || chan->state == BT_CLOSED) {
+ l2cap_chan_unlock(chan);
+ return;
+ }
+
+ if (chan->state != BT_CONNECTED) {
+ l2cap_do_create(chan, result, local_amp_id, remote_amp_id);
+ } else if (result != L2CAP_MR_SUCCESS) {
+ l2cap_do_move_cancel(chan, result);
+ } else {
+ switch (chan->move_role) {
+ case L2CAP_MOVE_ROLE_INITIATOR:
+ l2cap_do_move_initiate(chan, local_amp_id,
+ remote_amp_id);
+ break;
+ case L2CAP_MOVE_ROLE_RESPONDER:
+ l2cap_do_move_respond(chan, result);
+ break;
+ default:
+ l2cap_do_move_cancel(chan, result);
+ break;
+ }
+ }
+
+ l2cap_chan_unlock(chan);
+}
+
static inline int l2cap_move_channel_req(struct l2cap_conn *conn,
struct l2cap_cmd_hdr *cmd,
u16 cmd_len, void *data)
--
1.7.12.3
--
Mat Martineau
Employee of Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
^ permalink raw reply related
* [PATCHv4 11/18] Bluetooth: Add move confirm response handling
From: Mat Martineau @ 2012-10-19 21:34 UTC (permalink / raw)
To: linux-bluetooth, gustavo; +Cc: sunnyk, marcel, andrei.emeltchenko.news
In-Reply-To: <1350682449-24818-1-git-send-email-mathewm@codeaurora.org>
The move confirm response concludes the channel move command sequence.
Receipt of this command indicates that data may begin to flow again.
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
---
net/bluetooth/l2cap_core.c | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index 0edc955..71afb03 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -4658,6 +4658,7 @@ static inline int l2cap_move_channel_confirm_rsp(struct l2cap_conn *conn,
u16 cmd_len, void *data)
{
struct l2cap_move_chan_cfm_rsp *rsp = data;
+ struct l2cap_chan *chan;
u16 icid;
if (cmd_len != sizeof(*rsp))
@@ -4667,6 +4668,26 @@ static inline int l2cap_move_channel_confirm_rsp(struct l2cap_conn *conn,
BT_DBG("icid 0x%4.4x", icid);
+ chan = l2cap_get_chan_by_scid(conn, icid);
+ if (!chan)
+ return 0;
+
+ __clear_chan_timer(chan);
+
+ if (chan->move_state == L2CAP_MOVE_WAIT_CONFIRM_RSP) {
+ chan->move_state = L2CAP_MOVE_STABLE;
+ chan->local_amp_id = chan->move_id;
+
+ if (!chan->local_amp_id && chan->hs_hchan)
+ __release_logical_link(chan);
+
+ l2cap_move_success(chan);
+
+ chan->move_role = L2CAP_MOVE_ROLE_NONE;
+ }
+
+ l2cap_chan_unlock(chan);
+
return 0;
}
--
1.7.12.3
--
Mat Martineau
Employee of Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
^ permalink raw reply related
* [PATCHv4 10/18] Bluetooth: Add logical link confirm
From: Mat Martineau @ 2012-10-19 21:34 UTC (permalink / raw)
To: linux-bluetooth, gustavo; +Cc: sunnyk, marcel, andrei.emeltchenko.news
In-Reply-To: <1350682449-24818-1-git-send-email-mathewm@codeaurora.org>
The logical link confirm callback is executed when the AMP controller
completes its logical link setup. During a channel move, a newly
formed logical link allows a move responder to send a move channel
response. A move initiator will send a move channel confirm. A
failed logical link will end the channel move and send an appropriate
response or confirm command indicating a failure.
If the channel is being created on an AMP controller, L2CAP
configuration is completed after the logical link is set up.
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
---
net/bluetooth/l2cap_core.c | 124 ++++++++++++++++++++++++++++++++++++++++++---
1 file changed, 116 insertions(+), 8 deletions(-)
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index 69d43c9..0edc955 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -3799,6 +3799,7 @@ static inline int l2cap_config_req(struct l2cap_conn *conn,
goto unlock;
}
+ chan->ident = cmd->ident;
l2cap_send_cmd(conn, cmd->ident, L2CAP_CONF_RSP, len, rsp);
chan->num_conf_rsp++;
@@ -4198,17 +4199,17 @@ static int l2cap_create_channel_req(struct l2cap_conn *conn,
return 0;
}
-static void l2cap_send_move_chan_rsp(struct l2cap_conn *conn, u8 ident,
- u16 icid, u16 result)
+static void l2cap_send_move_chan_rsp(struct l2cap_chan *chan, u16 result)
{
struct l2cap_move_chan_rsp rsp;
- BT_DBG("icid 0x%4.4x, result 0x%4.4x", icid, result);
+ BT_DBG("chan %p, result 0x%4.4x", chan, result);
- rsp.icid = cpu_to_le16(icid);
+ rsp.icid = cpu_to_le16(chan->dcid);
rsp.result = cpu_to_le16(result);
- l2cap_send_cmd(conn, ident, L2CAP_MOVE_CHAN_RSP, sizeof(rsp), &rsp);
+ l2cap_send_cmd(chan->conn, chan->ident, L2CAP_MOVE_CHAN_RSP,
+ sizeof(rsp), &rsp);
}
static void l2cap_send_move_chan_cfm(struct l2cap_chan *chan, u16 result)
@@ -4260,11 +4261,114 @@ static void __release_logical_link(struct l2cap_chan *chan)
/* Placeholder - release the logical link */
}
+static void l2cap_logical_fail(struct l2cap_chan *chan)
+{
+ /* Logical link setup failed */
+ if (chan->state != BT_CONNECTED) {
+ /* Create channel failure, disconnect */
+ l2cap_send_disconn_req(chan->conn, chan, ECONNRESET);
+ } else if (chan->move_role == L2CAP_MOVE_ROLE_RESPONDER) {
+ l2cap_move_revert(chan);
+ chan->move_role = L2CAP_MOVE_ROLE_NONE;
+ chan->move_state = L2CAP_MOVE_STABLE;
+ l2cap_send_move_chan_rsp(chan, L2CAP_MR_NOT_SUPP);
+ } else if (chan->move_role == L2CAP_MOVE_ROLE_INITIATOR) {
+ if (chan->move_state == L2CAP_MOVE_WAIT_LOGICAL_COMP ||
+ chan->move_state == L2CAP_MOVE_WAIT_LOGICAL_CFM) {
+ /* Remote has only sent pending or
+ * success responses, clean up
+ */
+ l2cap_move_revert(chan);
+ chan->move_role = L2CAP_MOVE_ROLE_NONE;
+ chan->move_state = L2CAP_MOVE_STABLE;
+ }
+
+ /* Other amp move states imply that the move
+ * has already aborted
+ */
+ l2cap_send_move_chan_cfm(chan, L2CAP_MC_UNCONFIRMED);
+ }
+
+ __release_logical_link(chan);
+}
+
+static void l2cap_logical_finish_create(struct l2cap_chan *chan,
+ struct hci_chan *hchan)
+{
+ struct l2cap_conf_rsp rsp;
+ u8 code;
+
+ chan->hs_hcon = hchan->conn;
+ chan->hs_hcon->l2cap_data = chan->conn;
+
+ code = l2cap_build_conf_rsp(chan, &rsp,
+ L2CAP_CONF_SUCCESS, 0);
+ l2cap_send_cmd(chan->conn, chan->ident, L2CAP_CONF_RSP, code,
+ &rsp);
+ set_bit(CONF_OUTPUT_DONE, &chan->conf_state);
+
+ if (test_bit(CONF_INPUT_DONE, &chan->conf_state)) {
+ int err = 0;
+
+ set_default_fcs(chan);
+
+ err = l2cap_ertm_init(chan);
+ if (err < 0)
+ l2cap_send_disconn_req(chan->conn, chan, -err);
+ else
+ l2cap_chan_ready(chan);
+ }
+}
+
+static void l2cap_logical_finish_move(struct l2cap_chan *chan,
+ struct hci_chan *hchan)
+{
+ chan->hs_hcon = hchan->conn;
+ chan->hs_hcon->l2cap_data = chan->conn;
+
+ BT_DBG("move_state %d", chan->move_state);
+
+ switch (chan->move_state) {
+ case L2CAP_MOVE_WAIT_LOGICAL_COMP:
+ /* Move confirm will be sent after a success
+ * response is received
+ */
+ chan->move_state = L2CAP_MOVE_WAIT_RSP_SUCCESS;
+ break;
+ case L2CAP_MOVE_WAIT_LOGICAL_CFM:
+ if (test_bit(CONN_LOCAL_BUSY, &chan->conn_state)) {
+ chan->move_state = L2CAP_MOVE_WAIT_LOCAL_BUSY;
+ } else if (chan->move_role == L2CAP_MOVE_ROLE_INITIATOR) {
+ chan->move_state = L2CAP_MOVE_WAIT_CONFIRM_RSP;
+ l2cap_send_move_chan_cfm(chan, L2CAP_MC_CONFIRMED);
+ } else if (chan->move_role == L2CAP_MOVE_ROLE_RESPONDER) {
+ chan->move_state = L2CAP_MOVE_WAIT_CONFIRM;
+ l2cap_send_move_chan_rsp(chan, L2CAP_MR_SUCCESS);
+ }
+ break;
+ default:
+ /* Move was not in expected state, free the channel */
+ __release_logical_link(chan);
+
+ chan->move_state = L2CAP_MOVE_STABLE;
+ }
+}
+
+/* Call with chan locked */
static void l2cap_logical_cfm(struct l2cap_chan *chan, struct hci_chan *hchan,
u8 status)
{
- /* Placeholder */
- return;
+ BT_DBG("chan %p, hchan %p, status %d", chan, hchan, status);
+
+ if (status) {
+ l2cap_logical_fail(chan);
+ } else if (chan->state != BT_CONNECTED) {
+ /* Ignore logical link if channel is on BR/EDR */
+ if (chan->local_amp_id)
+ l2cap_logical_finish_create(chan, hchan);
+ } else {
+ l2cap_logical_finish_move(chan, hchan);
+ }
}
static inline int l2cap_move_channel_req(struct l2cap_conn *conn,
@@ -4272,6 +4376,7 @@ static inline int l2cap_move_channel_req(struct l2cap_conn *conn,
u16 cmd_len, void *data)
{
struct l2cap_move_chan_req *req = data;
+ struct l2cap_move_chan_rsp rsp;
struct l2cap_chan *chan;
u16 icid = 0;
u16 result = L2CAP_MR_NOT_ALLOWED;
@@ -4348,7 +4453,10 @@ static inline int l2cap_move_channel_req(struct l2cap_conn *conn,
}
send_move_response:
- l2cap_send_move_chan_rsp(conn, cmd->ident, icid, result);
+ rsp.icid = cpu_to_le16(icid);
+ rsp.result = cpu_to_le16(result);
+ l2cap_send_cmd(conn, cmd->ident, L2CAP_MOVE_CHAN_RSP,
+ sizeof(rsp), &rsp);
if (chan)
l2cap_chan_unlock(chan);
--
1.7.12.3
--
Mat Martineau
Employee of Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
^ permalink raw reply related
* [PATCHv4 09/18] Bluetooth: Move channel response
From: Mat Martineau @ 2012-10-19 21:34 UTC (permalink / raw)
To: linux-bluetooth, gustavo; +Cc: sunnyk, marcel, andrei.emeltchenko.news
In-Reply-To: <1350682449-24818-1-git-send-email-mathewm@codeaurora.org>
The move response command includes a result code indicationg
"pending", "success", or "failure" status. A pending result is
received when the remote address is still setting up a physical link,
and will be followed by success or failure. On success, logical link
setup will proceed. On failure, the move is stopped. The receiver of
a move channel response must always follow up by sending a move
channel confirm command.
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
---
include/net/bluetooth/l2cap.h | 2 +
net/bluetooth/l2cap_core.c | 186 ++++++++++++++++++++++++++++++++++++++----
2 files changed, 173 insertions(+), 15 deletions(-)
diff --git a/include/net/bluetooth/l2cap.h b/include/net/bluetooth/l2cap.h
index 6d3615e..b4c3c65 100644
--- a/include/net/bluetooth/l2cap.h
+++ b/include/net/bluetooth/l2cap.h
@@ -52,6 +52,8 @@
#define L2CAP_ENC_TIMEOUT msecs_to_jiffies(5000)
#define L2CAP_CONN_TIMEOUT msecs_to_jiffies(40000)
#define L2CAP_INFO_TIMEOUT msecs_to_jiffies(4000)
+#define L2CAP_MOVE_TIMEOUT msecs_to_jiffies(4000)
+#define L2CAP_MOVE_ERTX_TIMEOUT msecs_to_jiffies(60000)
#define L2CAP_A2MP_DEFAULT_MTU 670
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index d860a73..69d43c9 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -128,6 +128,20 @@ static struct l2cap_chan *__l2cap_get_chan_by_ident(struct l2cap_conn *conn,
return NULL;
}
+static struct l2cap_chan *l2cap_get_chan_by_ident(struct l2cap_conn *conn,
+ u8 ident)
+{
+ struct l2cap_chan *c;
+
+ mutex_lock(&conn->chan_lock);
+ c = __l2cap_get_chan_by_ident(conn, ident);
+ if (c)
+ l2cap_chan_lock(c);
+ mutex_unlock(&conn->chan_lock);
+
+ return c;
+}
+
static struct l2cap_chan *__l2cap_global_chan_by_addr(__le16 psm, bdaddr_t *src)
{
struct l2cap_chan *c;
@@ -4197,23 +4211,34 @@ static void l2cap_send_move_chan_rsp(struct l2cap_conn *conn, u8 ident,
l2cap_send_cmd(conn, ident, L2CAP_MOVE_CHAN_RSP, sizeof(rsp), &rsp);
}
-static void l2cap_send_move_chan_cfm(struct l2cap_conn *conn,
- struct l2cap_chan *chan,
- u16 icid, u16 result)
+static void l2cap_send_move_chan_cfm(struct l2cap_chan *chan, u16 result)
{
struct l2cap_move_chan_cfm cfm;
- u8 ident;
- BT_DBG("icid 0x%4.4x, result 0x%4.4x", icid, result);
+ BT_DBG("chan %p, result 0x%4.4x", chan, result);
- ident = l2cap_get_ident(conn);
- if (chan)
- chan->ident = ident;
+ chan->ident = l2cap_get_ident(chan->conn);
- cfm.icid = cpu_to_le16(icid);
+ cfm.icid = cpu_to_le16(chan->scid);
cfm.result = cpu_to_le16(result);
- l2cap_send_cmd(conn, ident, L2CAP_MOVE_CHAN_CFM, sizeof(cfm), &cfm);
+ l2cap_send_cmd(chan->conn, chan->ident, L2CAP_MOVE_CHAN_CFM,
+ sizeof(cfm), &cfm);
+
+ __set_chan_timer(chan, L2CAP_MOVE_TIMEOUT);
+}
+
+static void l2cap_send_move_chan_cfm_icid(struct l2cap_conn *conn, u16 icid)
+{
+ struct l2cap_move_chan_cfm cfm;
+
+ BT_DBG("conn %p, icid 0x%4.4x", conn, icid);
+
+ cfm.icid = cpu_to_le16(icid);
+ cfm.result = __constant_cpu_to_le16(L2CAP_MC_UNCONFIRMED);
+
+ l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_MOVE_CHAN_CFM,
+ sizeof(cfm), &cfm);
}
static void l2cap_send_move_chan_cfm_rsp(struct l2cap_conn *conn, u8 ident,
@@ -4235,6 +4260,13 @@ static void __release_logical_link(struct l2cap_chan *chan)
/* Placeholder - release the logical link */
}
+static void l2cap_logical_cfm(struct l2cap_chan *chan, struct hci_chan *hchan,
+ u8 status)
+{
+ /* Placeholder */
+ return;
+}
+
static inline int l2cap_move_channel_req(struct l2cap_conn *conn,
struct l2cap_cmd_hdr *cmd,
u16 cmd_len, void *data)
@@ -4324,9 +4356,131 @@ send_move_response:
return 0;
}
-static inline int l2cap_move_channel_rsp(struct l2cap_conn *conn,
- struct l2cap_cmd_hdr *cmd,
- u16 cmd_len, void *data)
+static void l2cap_move_continue(struct l2cap_conn *conn, u16 icid, u16 result)
+{
+ struct l2cap_chan *chan;
+ struct hci_chan *hchan = NULL;
+
+ chan = l2cap_get_chan_by_scid(conn, icid);
+ if (!chan) {
+ l2cap_send_move_chan_cfm_icid(conn, icid);
+ return;
+ }
+
+ __clear_chan_timer(chan);
+ if (result == L2CAP_MR_PEND)
+ __set_chan_timer(chan, L2CAP_MOVE_ERTX_TIMEOUT);
+
+ switch (chan->move_state) {
+ case L2CAP_MOVE_WAIT_LOGICAL_COMP:
+ /* Move confirm will be sent when logical link
+ * is complete.
+ */
+ chan->move_state = L2CAP_MOVE_WAIT_LOGICAL_CFM;
+ break;
+ case L2CAP_MOVE_WAIT_RSP_SUCCESS:
+ if (result == L2CAP_MR_PEND) {
+ break;
+ } else if (test_bit(CONN_LOCAL_BUSY,
+ &chan->conn_state)) {
+ chan->move_state = L2CAP_MOVE_WAIT_LOCAL_BUSY;
+ } else {
+ /* Logical link is up or moving to BR/EDR,
+ * proceed with move */
+ chan->move_state = L2CAP_MOVE_WAIT_CONFIRM_RSP;
+ l2cap_send_move_chan_cfm(chan, L2CAP_MC_CONFIRMED);
+ }
+ break;
+ case L2CAP_MOVE_WAIT_RSP:
+ /* Moving to AMP */
+ if (result == L2CAP_MR_SUCCESS) {
+ /* Remote is ready, send confirm immediately
+ * after logical link is ready
+ */
+ chan->move_state = L2CAP_MOVE_WAIT_LOGICAL_CFM;
+ } else {
+ /* Both logical link and move success
+ * are required to confirm
+ */
+ chan->move_state = L2CAP_MOVE_WAIT_LOGICAL_COMP;
+ }
+
+ /* Placeholder - get hci_chan for logical link */
+ if (!hchan) {
+ /* Logical link not available */
+ l2cap_send_move_chan_cfm(chan, L2CAP_MC_UNCONFIRMED);
+ break;
+ }
+
+ /* If the logical link is not yet connected, do not
+ * send confirmation.
+ */
+ if (hchan->state != BT_CONNECTED)
+ break;
+
+ /* Logical link is already ready to go */
+
+ chan->hs_hcon = hchan->conn;
+ chan->hs_hcon->l2cap_data = chan->conn;
+
+ if (result == L2CAP_MR_SUCCESS) {
+ /* Can confirm now */
+ l2cap_send_move_chan_cfm(chan, L2CAP_MC_CONFIRMED);
+ } else {
+ /* Now only need move success
+ * to confirm
+ */
+ chan->move_state = L2CAP_MOVE_WAIT_RSP_SUCCESS;
+ }
+
+ l2cap_logical_cfm(chan, hchan, L2CAP_MR_SUCCESS);
+ break;
+ default:
+ /* Any other amp move state means the move failed. */
+ chan->move_id = chan->local_amp_id;
+ chan->move_state = L2CAP_MOVE_STABLE;
+ l2cap_move_revert(chan);
+ chan->move_role = L2CAP_MOVE_ROLE_NONE;
+ l2cap_send_move_chan_cfm(chan, L2CAP_MC_UNCONFIRMED);
+ }
+
+ l2cap_chan_unlock(chan);
+}
+
+static void l2cap_move_fail(struct l2cap_conn *conn, u8 ident, u16 icid,
+ u16 result)
+{
+ struct l2cap_chan *chan;
+
+ chan = l2cap_get_chan_by_ident(conn, ident);
+ if (!chan) {
+ /* Could not locate channel, icid is best guess */
+ l2cap_send_move_chan_cfm_icid(conn, icid);
+ return;
+ }
+
+ __clear_chan_timer(chan);
+
+ if (chan->move_role == L2CAP_MOVE_ROLE_INITIATOR) {
+ if (result == L2CAP_MR_COLLISION) {
+ chan->move_role = L2CAP_MOVE_ROLE_RESPONDER;
+ } else {
+ /* Cleanup - cancel move */
+ chan->move_id = chan->local_amp_id;
+ chan->move_state = L2CAP_MOVE_STABLE;
+ l2cap_move_revert(chan);
+ chan->move_role = L2CAP_MOVE_ROLE_NONE;
+ }
+ }
+
+ l2cap_send_move_chan_cfm(chan, L2CAP_MC_UNCONFIRMED);
+
+ l2cap_chan_unlock(chan);
+}
+
+static int l2cap_move_channel_rsp(struct l2cap_conn *conn,
+ struct l2cap_cmd_hdr *cmd,
+ u16 cmd_len, void *data)
{
struct l2cap_move_chan_rsp *rsp = data;
u16 icid, result;
@@ -4339,8 +4493,10 @@ static inline int l2cap_move_channel_rsp(struct l2cap_conn *conn,
BT_DBG("icid 0x%4.4x, result 0x%4.4x", icid, result);
- /* Placeholder: Always unconfirmed */
- l2cap_send_move_chan_cfm(conn, NULL, icid, L2CAP_MC_UNCONFIRMED);
+ if (result == L2CAP_MR_SUCCESS || result == L2CAP_MR_PEND)
+ l2cap_move_continue(conn, icid, result);
+ else
+ l2cap_move_fail(conn, cmd->ident, icid, result);
return 0;
}
--
1.7.12.3
--
Mat Martineau
Employee of Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
^ permalink raw reply related
* [PATCHv4 08/18] Bluetooth: Add state to hci_chan
From: Mat Martineau @ 2012-10-19 21:33 UTC (permalink / raw)
To: linux-bluetooth, gustavo; +Cc: sunnyk, marcel, andrei.emeltchenko.news
In-Reply-To: <1350682449-24818-1-git-send-email-mathewm@codeaurora.org>
On an AMP controller, hci_chan maps to a logical link. When a channel
is being moved, the logical link may or may not be connected already.
The hci_chan->state is used to determine the existance of a useable
logical link so the link can be either used or requested.
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
---
include/net/bluetooth/hci_core.h | 1 +
net/bluetooth/hci_conn.c | 1 +
2 files changed, 2 insertions(+)
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 9fe8e2d..00abc52 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -355,6 +355,7 @@ struct hci_chan {
struct hci_conn *conn;
struct sk_buff_head data_q;
unsigned int sent;
+ __u8 state;
};
extern struct list_head hci_dev_list;
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index fe64621..6dcf452 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -959,6 +959,7 @@ struct hci_chan *hci_chan_create(struct hci_conn *conn)
chan->conn = conn;
skb_queue_head_init(&chan->data_q);
+ chan->state = BT_CONNECTED;
list_add_rcu(&chan->list, &conn->chan_list);
--
1.7.12.3
--
Mat Martineau
Employee of Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
^ permalink raw reply related
* [PATCHv4 07/18] Bluetooth: Add move channel confirm handling
From: Mat Martineau @ 2012-10-19 21:33 UTC (permalink / raw)
To: linux-bluetooth, gustavo; +Cc: sunnyk, marcel, andrei.emeltchenko.news
In-Reply-To: <1350682449-24818-1-git-send-email-mathewm@codeaurora.org>
After sending a move channel response, a move responder waits for a
move channel confirm command. If the received command has a
"confirmed" result the move is proceeding, and "unconfirmed" means the
move has failed and the channel will not change controllers.
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
---
net/bluetooth/l2cap_core.c | 74 ++++++++++++++++++++++++++++++++++++++++++++--
1 file changed, 71 insertions(+), 3 deletions(-)
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index ff25bf4..d860a73 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -1036,6 +1036,42 @@ static void l2cap_move_setup(struct l2cap_chan *chan)
set_bit(CONN_REMOTE_BUSY, &chan->conn_state);
}
+static void l2cap_move_success(struct l2cap_chan *chan)
+{
+ BT_DBG("chan %p", chan);
+
+ if (chan->mode != L2CAP_MODE_ERTM)
+ return;
+
+ switch (chan->move_role) {
+ case L2CAP_MOVE_ROLE_INITIATOR:
+ l2cap_tx(chan, NULL, NULL, L2CAP_EV_EXPLICIT_POLL);
+ chan->rx_state = L2CAP_RX_STATE_WAIT_F;
+ break;
+ case L2CAP_MOVE_ROLE_RESPONDER:
+ chan->rx_state = L2CAP_RX_STATE_WAIT_P;
+ break;
+ }
+}
+
+static void l2cap_move_revert(struct l2cap_chan *chan)
+{
+ BT_DBG("chan %p", chan);
+
+ if (chan->mode != L2CAP_MODE_ERTM)
+ return;
+
+ switch (chan->move_role) {
+ case L2CAP_MOVE_ROLE_INITIATOR:
+ l2cap_tx(chan, NULL, NULL, L2CAP_EV_EXPLICIT_POLL);
+ chan->rx_state = L2CAP_RX_STATE_WAIT_F;
+ break;
+ case L2CAP_MOVE_ROLE_RESPONDER:
+ chan->rx_state = L2CAP_RX_STATE_WAIT_P;
+ break;
+ }
+}
+
static void l2cap_chan_ready(struct l2cap_chan *chan)
{
/* This clears all conf flags, including CONF_NOT_COMPLETE */
@@ -4191,6 +4227,14 @@ static void l2cap_send_move_chan_cfm_rsp(struct l2cap_conn *conn, u8 ident,
l2cap_send_cmd(conn, ident, L2CAP_MOVE_CHAN_CFM_RSP, sizeof(rsp), &rsp);
}
+static void __release_logical_link(struct l2cap_chan *chan)
+{
+ chan->hs_hchan = NULL;
+ chan->hs_hcon = NULL;
+
+ /* Placeholder - release the logical link */
+}
+
static inline int l2cap_move_channel_req(struct l2cap_conn *conn,
struct l2cap_cmd_hdr *cmd,
u16 cmd_len, void *data)
@@ -4301,11 +4345,12 @@ static inline int l2cap_move_channel_rsp(struct l2cap_conn *conn,
return 0;
}
-static inline int l2cap_move_channel_confirm(struct l2cap_conn *conn,
- struct l2cap_cmd_hdr *cmd,
- u16 cmd_len, void *data)
+static int l2cap_move_channel_confirm(struct l2cap_conn *conn,
+ struct l2cap_cmd_hdr *cmd,
+ u16 cmd_len, void *data)
{
struct l2cap_move_chan_cfm *cfm = data;
+ struct l2cap_chan *chan;
u16 icid, result;
if (cmd_len != sizeof(*cfm))
@@ -4316,8 +4361,31 @@ static inline int l2cap_move_channel_confirm(struct l2cap_conn *conn,
BT_DBG("icid 0x%4.4x, result 0x%4.4x", icid, result);
+ chan = l2cap_get_chan_by_dcid(conn, icid);
+ if (!chan) {
+ /* Spec requires a response even if the icid was not found */
+ l2cap_send_move_chan_cfm_rsp(conn, cmd->ident, icid);
+ return 0;
+ }
+
+ if (chan->move_state == L2CAP_MOVE_WAIT_CONFIRM) {
+ chan->move_state = L2CAP_MOVE_STABLE;
+ if (result == L2CAP_MC_CONFIRMED) {
+ chan->local_amp_id = chan->move_id;
+ if (!chan->local_amp_id)
+ __release_logical_link(chan);
+ l2cap_move_success(chan);
+ } else {
+ chan->move_id = chan->local_amp_id;
+ l2cap_move_revert(chan);
+ }
+ chan->move_role = L2CAP_MOVE_ROLE_NONE;
+ }
+
l2cap_send_move_chan_cfm_rsp(conn, cmd->ident, icid);
+ l2cap_chan_unlock(chan);
+
return 0;
}
--
1.7.12.3
--
Mat Martineau
Employee of Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
^ permalink raw reply related
* [PATCHv4 06/18] Bluetooth: Add new ERTM receive states for channel move
From: Mat Martineau @ 2012-10-19 21:33 UTC (permalink / raw)
To: linux-bluetooth, gustavo; +Cc: sunnyk, marcel, andrei.emeltchenko.news
In-Reply-To: <1350682449-24818-1-git-send-email-mathewm@codeaurora.org>
Two new states are required to implement channel moves with the ERTM
receive state machine.
The "WAIT_P" state is used by a move responder to wait for a "poll"
flag after a move is completed (success or failure). "WAIT_F" is
similarly used by a move initiator to wait for a "final" flag when the
move is completing. In either state, the reqseq value in the
poll/final frame tells the state machine exactly which frame should be
expected next.
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
---
net/bluetooth/l2cap_core.c | 104 +++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 104 insertions(+)
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index 42e20ee..ff25bf4 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -4706,6 +4706,12 @@ static int l2cap_reassemble_sdu(struct l2cap_chan *chan, struct sk_buff *skb,
return err;
}
+static int l2cap_resegment(struct l2cap_chan *chan)
+{
+ /* Placeholder */
+ return 0;
+}
+
void l2cap_chan_busy(struct l2cap_chan *chan, int busy)
{
u8 event;
@@ -5211,6 +5217,98 @@ static int l2cap_rx_state_srej_sent(struct l2cap_chan *chan,
return err;
}
+static int l2cap_finish_move(struct l2cap_chan *chan)
+{
+ BT_DBG("chan %p", chan);
+
+ chan->move_role = L2CAP_MOVE_ROLE_NONE;
+ chan->rx_state = L2CAP_RX_STATE_RECV;
+
+ if (chan->hs_hcon)
+ chan->conn->mtu = chan->hs_hcon->hdev->block_mtu;
+ else
+ chan->conn->mtu = chan->conn->hcon->hdev->acl_mtu;
+
+ return l2cap_resegment(chan);
+}
+
+static int l2cap_rx_state_wait_p(struct l2cap_chan *chan,
+ struct l2cap_ctrl *control,
+ struct sk_buff *skb, u8 event)
+{
+ int err;
+
+ BT_DBG("chan %p, control %p, skb %p, event %d", chan, control, skb,
+ event);
+
+ if (!control->poll)
+ return -EPROTO;
+
+ l2cap_process_reqseq(chan, control->reqseq);
+
+ if (!skb_queue_empty(&chan->tx_q))
+ chan->tx_send_head = skb_peek(&chan->tx_q);
+ else
+ chan->tx_send_head = NULL;
+
+ /* Rewind next_tx_seq to the point expected
+ * by the receiver.
+ */
+ chan->next_tx_seq = control->reqseq;
+ chan->unacked_frames = 0;
+
+ err = l2cap_finish_move(chan);
+ if (err)
+ return err;
+
+ set_bit(CONN_SEND_FBIT, &chan->conn_state);
+ l2cap_send_i_or_rr_or_rnr(chan);
+
+ if (event == L2CAP_EV_RECV_IFRAME)
+ return -EPROTO;
+
+ return l2cap_rx_state_recv(chan, control, NULL, event);
+}
+
+static int l2cap_rx_state_wait_f(struct l2cap_chan *chan,
+ struct l2cap_ctrl *control,
+ struct sk_buff *skb, u8 event)
+{
+ int err;
+
+ if (!control->final)
+ return -EPROTO;
+
+ clear_bit(CONN_REMOTE_BUSY, &chan->conn_state);
+ chan->move_role = L2CAP_MOVE_ROLE_NONE;
+
+ chan->rx_state = L2CAP_RX_STATE_RECV;
+ l2cap_process_reqseq(chan, control->reqseq);
+
+ if (!skb_queue_empty(&chan->tx_q))
+ chan->tx_send_head = skb_peek(&chan->tx_q);
+ else
+ chan->tx_send_head = NULL;
+
+ /* Rewind next_tx_seq to the point expected
+ * by the receiver.
+ */
+ chan->next_tx_seq = control->reqseq;
+ chan->unacked_frames = 0;
+
+ if (chan->hs_hcon)
+ chan->conn->mtu = chan->hs_hcon->hdev->block_mtu;
+ else
+ chan->conn->mtu = chan->conn->hcon->hdev->acl_mtu;
+
+ err = l2cap_resegment(chan);
+
+ if (!err)
+ err = l2cap_rx_state_recv(chan, control, skb, event);
+
+ return err;
+}
+
static bool __valid_reqseq(struct l2cap_chan *chan, u16 reqseq)
{
/* Make sure reqseq is for a packet that has been sent but not acked */
@@ -5237,6 +5335,12 @@ static int l2cap_rx(struct l2cap_chan *chan, struct l2cap_ctrl *control,
err = l2cap_rx_state_srej_sent(chan, control, skb,
event);
break;
+ case L2CAP_RX_STATE_WAIT_P:
+ err = l2cap_rx_state_wait_p(chan, control, skb, event);
+ break;
+ case L2CAP_RX_STATE_WAIT_F:
+ err = l2cap_rx_state_wait_f(chan, control, skb, event);
+ break;
default:
/* shut it down */
break;
--
1.7.12.3
--
Mat Martineau
Employee of Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
^ permalink raw reply related
* [PATCHv4 05/18] Bluetooth: Channel move request handling
From: Mat Martineau @ 2012-10-19 21:33 UTC (permalink / raw)
To: linux-bluetooth, gustavo; +Cc: sunnyk, marcel, andrei.emeltchenko.news
In-Reply-To: <1350682449-24818-1-git-send-email-mathewm@codeaurora.org>
On receipt of a channel move request, the request must be validated
based on the L2CAP mode, connection state, and controller
capabilities. ERTM channels must have their state machines cleared
and transmission paused while the channel move takes place.
If the channel is being moved to an AMP controller then
an AMP physical link must be prepared. Moving the channel back to
BR/EDR proceeds immediately.
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
---
net/bluetooth/l2cap_core.c | 108 ++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 107 insertions(+), 1 deletion(-)
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index e826420..42e20ee 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -734,6 +734,12 @@ static void l2cap_send_cmd(struct l2cap_conn *conn, u8 ident, u8 code, u16 len,
hci_send_acl(conn->hchan, skb, flags);
}
+static bool __chan_is_moving(struct l2cap_chan *chan)
+{
+ return chan->move_state != L2CAP_MOVE_STABLE &&
+ chan->move_state != L2CAP_MOVE_WAIT_PREPARE;
+}
+
static void l2cap_do_send(struct l2cap_chan *chan, struct sk_buff *skb)
{
struct hci_conn *hcon = chan->conn->hcon;
@@ -995,6 +1001,41 @@ void l2cap_send_conn_req(struct l2cap_chan *chan)
l2cap_send_cmd(conn, chan->ident, L2CAP_CONN_REQ, sizeof(req), &req);
}
+static void l2cap_move_setup(struct l2cap_chan *chan)
+{
+ struct sk_buff *skb;
+
+ BT_DBG("chan %p", chan);
+
+ if (chan->mode != L2CAP_MODE_ERTM)
+ return;
+
+ __clear_retrans_timer(chan);
+ __clear_monitor_timer(chan);
+ __clear_ack_timer(chan);
+
+ chan->retry_count = 0;
+ skb_queue_walk(&chan->tx_q, skb) {
+ if (bt_cb(skb)->control.retries)
+ bt_cb(skb)->control.retries = 1;
+ else
+ break;
+ }
+
+ chan->expected_tx_seq = chan->buffer_seq;
+
+ clear_bit(CONN_REJ_ACT, &chan->conn_state);
+ clear_bit(CONN_SREJ_ACT, &chan->conn_state);
+ l2cap_seq_list_clear(&chan->retrans_list);
+ l2cap_seq_list_clear(&chan->srej_list);
+ skb_queue_purge(&chan->srej_q);
+
+ chan->tx_state = L2CAP_TX_STATE_XMIT;
+ chan->rx_state = L2CAP_RX_STATE_MOVE;
+
+ set_bit(CONN_REMOTE_BUSY, &chan->conn_state);
+}
+
static void l2cap_chan_ready(struct l2cap_chan *chan)
{
/* This clears all conf flags, including CONF_NOT_COMPLETE */
@@ -4155,6 +4196,7 @@ static inline int l2cap_move_channel_req(struct l2cap_conn *conn,
u16 cmd_len, void *data)
{
struct l2cap_move_chan_req *req = data;
+ struct l2cap_chan *chan;
u16 icid = 0;
u16 result = L2CAP_MR_NOT_ALLOWED;
@@ -4168,9 +4210,73 @@ static inline int l2cap_move_channel_req(struct l2cap_conn *conn,
if (!enable_hs)
return -EINVAL;
- /* Placeholder: Always refuse */
+ chan = l2cap_get_chan_by_dcid(conn, icid);
+ if (!chan || chan->scid < L2CAP_CID_DYN_START ||
+ chan->chan_policy == BT_CHANNEL_POLICY_BREDR_ONLY ||
+ (chan->mode != L2CAP_MODE_ERTM &&
+ chan->mode != L2CAP_MODE_STREAMING)) {
+ result = L2CAP_MR_NOT_ALLOWED;
+ goto send_move_response;
+ }
+
+ if (chan->local_amp_id == req->dest_amp_id) {
+ result = L2CAP_MR_SAME_ID;
+ goto send_move_response;
+ }
+
+ if (req->dest_amp_id) {
+ struct hci_dev *hdev;
+ hdev = hci_dev_get(req->dest_amp_id);
+ if (!hdev || hdev->dev_type != HCI_AMP ||
+ !test_bit(HCI_UP, &hdev->flags)) {
+ if (hdev)
+ hci_dev_put(hdev);
+
+ result = L2CAP_MR_BAD_ID;
+ goto send_move_response;
+ }
+ hci_dev_put(hdev);
+ }
+
+ /* Detect a move collision. Only send a collision response
+ * if this side has "lost", otherwise proceed with the move.
+ * The winner has the larger bd_addr.
+ */
+ if ((__chan_is_moving(chan) ||
+ chan->move_role != L2CAP_MOVE_ROLE_NONE) &&
+ bacmp(conn->src, conn->dst) > 0) {
+ result = L2CAP_MR_COLLISION;
+ goto send_move_response;
+ }
+
+ chan->ident = cmd->ident;
+ chan->move_role = L2CAP_MOVE_ROLE_RESPONDER;
+ l2cap_move_setup(chan);
+ chan->move_id = req->dest_amp_id;
+ icid = chan->dcid;
+
+ if (!req->dest_amp_id) {
+ /* Moving to BR/EDR */
+ if (test_bit(CONN_LOCAL_BUSY, &chan->conn_state)) {
+ chan->move_state = L2CAP_MOVE_WAIT_LOCAL_BUSY;
+ result = L2CAP_MR_PEND;
+ } else {
+ chan->move_state = L2CAP_MOVE_WAIT_CONFIRM;
+ result = L2CAP_MR_SUCCESS;
+ }
+ } else {
+ chan->move_state = L2CAP_MOVE_WAIT_PREPARE;
+ /* Placeholder - uncomment when amp functions are available */
+ /*amp_accept_physical(chan, req->dest_amp_id);*/
+ result = L2CAP_MR_PEND;
+ }
+
+send_move_response:
l2cap_send_move_chan_rsp(conn, cmd->ident, icid, result);
+ if (chan)
+ l2cap_chan_unlock(chan);
+
return 0;
}
--
1.7.12.3
--
Mat Martineau
Employee of Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
^ permalink raw reply related
* [PATCHv4 04/18] Bluetooth: Lookup channel structure based on DCID
From: Mat Martineau @ 2012-10-19 21:33 UTC (permalink / raw)
To: linux-bluetooth, gustavo; +Cc: sunnyk, marcel, andrei.emeltchenko.news
In-Reply-To: <1350682449-24818-1-git-send-email-mathewm@codeaurora.org>
Processing a move channel request involves getting the channel
structure using the destination channel ID. Previous code could only
look up using the source channel ID.
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
---
net/bluetooth/l2cap_core.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index ec2b4d9..e826420 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -100,6 +100,22 @@ static struct l2cap_chan *l2cap_get_chan_by_scid(struct l2cap_conn *conn,
return c;
}
+/* Find channel with given DCID.
+ * Returns locked channel. */
+static struct l2cap_chan *l2cap_get_chan_by_dcid(struct l2cap_conn *conn,
+ u16 cid)
+{
+ struct l2cap_chan *c;
+
+ mutex_lock(&conn->chan_lock);
+ c = __l2cap_get_chan_by_dcid(conn, cid);
+ if (c)
+ l2cap_chan_lock(c);
+ mutex_unlock(&conn->chan_lock);
+
+ return c;
+}
+
static struct l2cap_chan *__l2cap_get_chan_by_ident(struct l2cap_conn *conn,
u8 ident)
{
--
1.7.12.3
--
Mat Martineau
Employee of Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
^ permalink raw reply related
* [PATCHv4 03/18] Bluetooth: Remove unnecessary intermediate function
From: Mat Martineau @ 2012-10-19 21:33 UTC (permalink / raw)
To: linux-bluetooth, gustavo; +Cc: sunnyk, marcel, andrei.emeltchenko.news
In-Reply-To: <1350682449-24818-1-git-send-email-mathewm@codeaurora.org>
Resolves a conflict resolution issue in "Bluetooth: Fix L2CAP coding
style". The remaining connect and create channel response handler is
renamed to better reflect its use for both response types.
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
---
net/bluetooth/l2cap_core.c | 13 ++-----------
1 file changed, 2 insertions(+), 11 deletions(-)
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index 73ce337..ec2b4d9 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -3537,7 +3537,7 @@ static int l2cap_connect_req(struct l2cap_conn *conn,
return 0;
}
-static inline int l2cap_connect_rsp(struct l2cap_conn *conn,
+static int l2cap_connect_create_rsp(struct l2cap_conn *conn,
struct l2cap_cmd_hdr *cmd, u8 *data)
{
struct l2cap_conn_rsp *rsp = (struct l2cap_conn_rsp *) data;
@@ -4091,15 +4091,6 @@ static int l2cap_create_channel_req(struct l2cap_conn *conn,
return 0;
}
-static inline int l2cap_create_channel_rsp(struct l2cap_conn *conn,
- struct l2cap_cmd_hdr *cmd,
- void *data)
-{
- BT_DBG("conn %p", conn);
-
- return l2cap_connect_rsp(conn, cmd, data);
-}
-
static void l2cap_send_move_chan_rsp(struct l2cap_conn *conn, u8 ident,
u16 icid, u16 result)
{
@@ -4306,7 +4297,7 @@ static inline int l2cap_bredr_sig_cmd(struct l2cap_conn *conn,
case L2CAP_CONN_RSP:
case L2CAP_CREATE_CHAN_RSP:
- err = l2cap_connect_rsp(conn, cmd, data);
+ err = l2cap_connect_create_rsp(conn, cmd, data);
break;
case L2CAP_CONF_REQ:
--
1.7.12.3
--
Mat Martineau
Employee of Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
^ permalink raw reply related
* [PATCHv4 02/18] Bluetooth: Add L2CAP create channel request handling
From: Mat Martineau @ 2012-10-19 21:33 UTC (permalink / raw)
To: linux-bluetooth, gustavo
Cc: sunnyk, marcel, andrei.emeltchenko.news, Andrei Emeltchenko
In-Reply-To: <1350682449-24818-1-git-send-email-mathewm@codeaurora.org>
The L2CAP create channel request is very similar to an L2CAP connect
request, but it has an additional parameter for the controller ID. If
the controller id is 0, the channel is set up on the BR/EDR controller
(just like a connect request). Using a valid high speed controller ID
will cause the channel to be initially created on that high speed
controller. While the L2CAP data will be initially routed over the
AMP controller, the L2CAP fixed signaling channel only uses BR/EDR.
When a create channel request is received for a high speed controller,
a pending response is always sent first. After the high speed
physical and logical links are complete a success response will be
sent.
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
---
net/bluetooth/l2cap_core.c | 62 +++++++++++++++++++++++++++++++++++-----------
1 file changed, 47 insertions(+), 15 deletions(-)
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index f8d78f5..73ce337 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -3400,8 +3400,9 @@ static inline int l2cap_command_rej(struct l2cap_conn *conn,
return 0;
}
-static void l2cap_connect(struct l2cap_conn *conn, struct l2cap_cmd_hdr *cmd,
- u8 *data, u8 rsp_code, u8 amp_id)
+static struct l2cap_chan *l2cap_connect(struct l2cap_conn *conn,
+ struct l2cap_cmd_hdr *cmd,
+ u8 *data, u8 rsp_code, u8 amp_id)
{
struct l2cap_conn_req *req = (struct l2cap_conn_req *) data;
struct l2cap_conn_rsp rsp;
@@ -3452,6 +3453,7 @@ static void l2cap_connect(struct l2cap_conn *conn, struct l2cap_cmd_hdr *cmd,
bacpy(&bt_sk(sk)->dst, conn->dst);
chan->psm = psm;
chan->dcid = scid;
+ chan->local_amp_id = amp_id;
__l2cap_chan_add(conn, chan);
@@ -3469,8 +3471,16 @@ static void l2cap_connect(struct l2cap_conn *conn, struct l2cap_cmd_hdr *cmd,
status = L2CAP_CS_AUTHOR_PEND;
chan->ops->defer(chan);
} else {
- __l2cap_state_change(chan, BT_CONFIG);
- result = L2CAP_CR_SUCCESS;
+ /* Force pending result for AMP controllers.
+ * The connection will succeed after the
+ * physical link is up. */
+ if (amp_id) {
+ __l2cap_state_change(chan, BT_CONNECT2);
+ result = L2CAP_CR_PEND;
+ } else {
+ __l2cap_state_change(chan, BT_CONFIG);
+ result = L2CAP_CR_SUCCESS;
+ }
status = L2CAP_CS_NO_INFO;
}
} else {
@@ -3516,6 +3526,8 @@ sendresp:
l2cap_build_conf_req(chan, buf), buf);
chan->num_conf_req++;
}
+
+ return chan;
}
static int l2cap_connect_req(struct l2cap_conn *conn,
@@ -4028,12 +4040,12 @@ static inline int l2cap_information_rsp(struct l2cap_conn *conn,
return 0;
}
-static inline int l2cap_create_channel_req(struct l2cap_conn *conn,
- struct l2cap_cmd_hdr *cmd,
- u16 cmd_len, void *data)
+static int l2cap_create_channel_req(struct l2cap_conn *conn,
+ struct l2cap_cmd_hdr *cmd,
+ u16 cmd_len, void *data)
{
struct l2cap_create_chan_req *req = data;
- struct l2cap_create_chan_rsp rsp;
+ struct l2cap_chan *chan;
u16 psm, scid;
if (cmd_len != sizeof(*req))
@@ -4047,14 +4059,34 @@ static inline int l2cap_create_channel_req(struct l2cap_conn *conn,
BT_DBG("psm 0x%2.2x, scid 0x%4.4x, amp_id %d", psm, scid, req->amp_id);
- /* Placeholder: Always reject */
- rsp.dcid = 0;
- rsp.scid = cpu_to_le16(scid);
- rsp.result = __constant_cpu_to_le16(L2CAP_CR_NO_MEM);
- rsp.status = __constant_cpu_to_le16(L2CAP_CS_NO_INFO);
+ if (req->amp_id) {
+ struct hci_dev *hdev;
- l2cap_send_cmd(conn, cmd->ident, L2CAP_CREATE_CHAN_RSP,
- sizeof(rsp), &rsp);
+ /* Validate AMP controller id */
+ hdev = hci_dev_get(req->amp_id);
+ if (!hdev || hdev->dev_type != HCI_AMP ||
+ !test_bit(HCI_UP, &hdev->flags)) {
+ struct l2cap_create_chan_rsp rsp;
+
+ rsp.dcid = 0;
+ rsp.scid = cpu_to_le16(scid);
+ rsp.result = __constant_cpu_to_le16(L2CAP_CR_BAD_AMP);
+ rsp.status = __constant_cpu_to_le16(L2CAP_CS_NO_INFO);
+
+ l2cap_send_cmd(conn, cmd->ident, L2CAP_CREATE_CHAN_RSP,
+ sizeof(rsp), &rsp);
+
+ if (hdev)
+ hci_dev_put(hdev);
+
+ return 0;
+ }
+
+ hci_dev_put(hdev);
+ }
+
+ chan = l2cap_connect(conn, cmd, data, L2CAP_CREATE_CHAN_RSP,
+ req->amp_id);
return 0;
}
--
1.7.12.3
--
Mat Martineau
Employee of Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
^ permalink raw reply related
* [PATCHv4 01/18] Bluetooth: Add new l2cap_chan struct members for high speed channels
From: Mat Martineau @ 2012-10-19 21:33 UTC (permalink / raw)
To: linux-bluetooth, gustavo
Cc: sunnyk, marcel, andrei.emeltchenko.news, Andrei Emeltchenko
In-Reply-To: <1350682449-24818-1-git-send-email-mathewm@codeaurora.org>
An L2CAP channel using high speed continues to be associated with a
BR/EDR l2cap_conn, while also tracking an additional hci_conn
(representing a physical link on a high speed controller) and hci_chan
(representing a logical link). There may only be one physical link
between two high speed controllers. Each physical link may contain
several logical links, with each logical link representing a channel
with specific quality of service.
During a channel move, the destination channel id, current move state,
and role (initiator vs. responder) are tracked and used by the channel
move state machine. The ident value associated with a move request
must also be stored in order to use it in later move responses.
The active channel is stored in local_amp_id.
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
---
include/net/bluetooth/l2cap.h | 29 +++++++++++++++++++++++++++++
net/bluetooth/l2cap_core.c | 5 +++++
2 files changed, 34 insertions(+)
diff --git a/include/net/bluetooth/l2cap.h b/include/net/bluetooth/l2cap.h
index 6e23afd..6d3615e 100644
--- a/include/net/bluetooth/l2cap.h
+++ b/include/net/bluetooth/l2cap.h
@@ -434,6 +434,8 @@ struct l2cap_chan {
struct sock *sk;
struct l2cap_conn *conn;
+ struct hci_conn *hs_hcon;
+ struct hci_chan *hs_hchan;
struct kref kref;
__u8 state;
@@ -477,6 +479,11 @@ struct l2cap_chan {
unsigned long conn_state;
unsigned long flags;
+ __u8 local_amp_id;
+ __u8 move_id;
+ __u8 move_state;
+ __u8 move_role;
+
__u16 next_tx_seq;
__u16 expected_ack_seq;
__u16 expected_tx_seq;
@@ -644,6 +651,9 @@ enum {
enum {
L2CAP_RX_STATE_RECV,
L2CAP_RX_STATE_SREJ_SENT,
+ L2CAP_RX_STATE_MOVE,
+ L2CAP_RX_STATE_WAIT_P,
+ L2CAP_RX_STATE_WAIT_F,
};
enum {
@@ -674,6 +684,25 @@ enum {
L2CAP_EV_RECV_FRAME,
};
+enum {
+ L2CAP_MOVE_ROLE_NONE,
+ L2CAP_MOVE_ROLE_INITIATOR,
+ L2CAP_MOVE_ROLE_RESPONDER,
+};
+
+enum {
+ L2CAP_MOVE_STABLE,
+ L2CAP_MOVE_WAIT_REQ,
+ L2CAP_MOVE_WAIT_RSP,
+ L2CAP_MOVE_WAIT_RSP_SUCCESS,
+ L2CAP_MOVE_WAIT_CONFIRM,
+ L2CAP_MOVE_WAIT_CONFIRM_RSP,
+ L2CAP_MOVE_WAIT_LOGICAL_COMP,
+ L2CAP_MOVE_WAIT_LOGICAL_CFM,
+ L2CAP_MOVE_WAIT_LOCAL_BUSY,
+ L2CAP_MOVE_WAIT_PREPARE,
+};
+
void l2cap_chan_hold(struct l2cap_chan *c);
void l2cap_chan_put(struct l2cap_chan *c);
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index f873619..f8d78f5 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -2788,6 +2788,11 @@ int l2cap_ertm_init(struct l2cap_chan *chan)
skb_queue_head_init(&chan->tx_q);
+ chan->local_amp_id = 0;
+ chan->move_id = 0;
+ chan->move_state = L2CAP_MOVE_STABLE;
+ chan->move_role = L2CAP_MOVE_ROLE_NONE;
+
if (chan->mode != L2CAP_MODE_ERTM)
return 0;
--
1.7.12.3
--
Mat Martineau
Employee of Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
^ permalink raw reply related
* [PATCHv4 00/18] L2CAP signaling for AMP channel create/move
From: Mat Martineau @ 2012-10-19 21:33 UTC (permalink / raw)
To: linux-bluetooth, gustavo; +Cc: sunnyk, marcel, andrei.emeltchenko.news
Here are the changes that process commands on the L2CAP signaling
channel for setting up AMP channels. There's still a lot of
integration to do as other AMP functionality is implemented. I've
marked places that require this integration with "Placeholder"
comments (look for that string).
Changes:
* PATCHv4 - More acks, several code organization fixups to patch 10.
send_move_chan_* helper functions are now more helpful.
* PATCHv3 - Dropped patch 17, fixed style issues in 5, 7, and 9.
Split up a large function in patch 10.
* PATCHv2 - Fixed formatting and style issues, added acks
* PATCHv1 - Rebased after AMP physical link patch set, incorporated
mailing list feedback.
* RFCv1 - Finished commit messages, fixed formatting/style issues
* RFCv0 - Initial post
Mat Martineau (18):
Bluetooth: Add new l2cap_chan struct members for high speed channels
Bluetooth: Add L2CAP create channel request handling
Bluetooth: Remove unnecessary intermediate function
Bluetooth: Lookup channel structure based on DCID
Bluetooth: Channel move request handling
Bluetooth: Add new ERTM receive states for channel move
Bluetooth: Add move channel confirm handling
Bluetooth: Add state to hci_chan
Bluetooth: Move channel response
Bluetooth: Add logical link confirm
Bluetooth: Add move confirm response handling
Bluetooth: Handle physical link completion
Bluetooth: Flag ACL frames as complete for AMP controllers
Bluetooth: Do not send data during channel move
Bluetooth: Configure appropriate timeouts for AMP controllers
Bluetooth: Ignore BR/EDR packet size constraints when fragmenting for
AMP
Bluetooth: Do not retransmit data during a channel move
Bluetooth: Start channel move when socket option is changed
include/net/bluetooth/hci_core.h | 1 +
include/net/bluetooth/l2cap.h | 32 ++
net/bluetooth/hci_conn.c | 1 +
net/bluetooth/l2cap_core.c | 960 ++++++++++++++++++++++++++++++++++++---
net/bluetooth/l2cap_sock.c | 5 +
5 files changed, 943 insertions(+), 56 deletions(-)
--
1.7.12.3
--
Mat Martineau
Employee of Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
^ permalink raw reply
* Re: [PATCHv3 10/18] Bluetooth: Add logical link confirm
From: Mat Martineau @ 2012-10-19 21:21 UTC (permalink / raw)
To: Marcel Holtmann; +Cc: linux-bluetooth, gustavo, sunnyk, andrei.emeltchenko.news
In-Reply-To: <1350594530.2026.18.camel@aeonflux>
Hi Marcel -
On Thu, 18 Oct 2012, Marcel Holtmann wrote:
> Hi Mat,
>
>> The logical link confirm callback is executed when the AMP controller
>> completes its logical link setup. During a channel move, a newly
>> formed logical link allows a move responder to send a move channel
>> response. A move initiator will send a move channel confirm. A
>> failed logical link will end the channel move and send an appropriate
>> response or confirm command indicating a failure.
>>
>> If the channel is being created on an AMP controller, L2CAP
>> configuration is started after the logical link is set up.
>>
>> Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
>> ---
>> net/bluetooth/l2cap_core.c | 120 ++++++++++++++++++++++++++++++++++++++++++++-
>> 1 file changed, 118 insertions(+), 2 deletions(-)
>>
>> diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
>> index 7e50aa4..8e50685 100644
>> --- a/net/bluetooth/l2cap_core.c
>> +++ b/net/bluetooth/l2cap_core.c
>> @@ -3799,6 +3799,7 @@ static inline int l2cap_config_req(struct l2cap_conn *conn,
>> goto unlock;
>> }
>>
>> + chan->ident = cmd->ident;
>> l2cap_send_cmd(conn, cmd->ident, L2CAP_CONF_RSP, len, rsp);
>> chan->num_conf_rsp++;
>>
>> @@ -4241,11 +4242,126 @@ static void l2cap_send_move_chan_cfm_rsp(struct l2cap_conn *conn, u8 ident,
>> l2cap_send_cmd(conn, ident, L2CAP_MOVE_CHAN_CFM_RSP, sizeof(rsp), &rsp);
>> }
>>
>> +static void l2cap_logical_fail(struct l2cap_chan *chan)
>> +{
>> + /* Logical link setup failed */
>> + if (chan->state != BT_CONNECTED) {
>> + /* Create channel failure, disconnect */
>> + l2cap_send_disconn_req(chan->conn, chan, ECONNRESET);
>
> goto done;
The cleanup is now wrapped up in a helper function, so I just call the
function in this block of code and do an early return.
>
> And then the chan->move_role as switch statement?
Done.
>> + } else if (chan->move_role == L2CAP_MOVE_ROLE_RESPONDER) {
>> + l2cap_move_revert(chan);
>> + chan->move_role = L2CAP_MOVE_ROLE_NONE;
>> + chan->move_state = L2CAP_MOVE_STABLE;
>> + l2cap_send_move_chan_rsp(chan->conn, chan->ident, chan->dcid,
>> + L2CAP_MR_NOT_SUPP);
>> + } else if (chan->move_role == L2CAP_MOVE_ROLE_INITIATOR) {
>> + if (chan->move_state == L2CAP_MOVE_WAIT_LOGICAL_COMP ||
>> + chan->move_state == L2CAP_MOVE_WAIT_LOGICAL_CFM) {
>> + /* Remote has only sent pending or
>> + * success responses, clean up
>> + */
>> + l2cap_move_revert(chan);
>> + chan->move_role = L2CAP_MOVE_ROLE_NONE;
>> + chan->move_state = L2CAP_MOVE_STABLE;
>> + }
>> +
>> + /* Other amp move states imply that the move
>> + * has already aborted
>> + */
>> + l2cap_send_move_chan_cfm(chan->conn, chan, chan->scid,
>> + L2CAP_MC_UNCONFIRMED);
>> + __set_chan_timer(chan, L2CAP_MOVE_TIMEOUT);
>> + }
>> +
>
> done:
>
> /* cleanup ... */
>
>> + chan->hs_hchan = NULL;
>> + chan->hs_hcon = NULL;
>> +
>> + /* Placeholder - free logical link */
>> +}
>> +
>> +static void l2cap_logical_create_channel(struct l2cap_chan *chan,
>> + struct hci_chan *hchan)
>> +{
>> + struct l2cap_conf_rsp rsp;
>> + u8 code;
>> +
>> + chan->hs_hcon = hchan->conn;
>> + chan->hs_hcon->l2cap_data = chan->conn;
>> +
>> + code = l2cap_build_conf_rsp(chan, &rsp,
>> + L2CAP_CONF_SUCCESS, 0);
>> + l2cap_send_cmd(chan->conn, chan->ident, L2CAP_CONF_RSP, code,
>> + &rsp);
>> + set_bit(CONF_OUTPUT_DONE, &chan->conf_state);
>> +
>> + if (test_bit(CONF_INPUT_DONE, &chan->conf_state)) {
>> + int err = 0;
>> +
>> + set_default_fcs(chan);
>> +
>> + err = l2cap_ertm_init(chan);
>> + if (err < 0)
>> + l2cap_send_disconn_req(chan->conn, chan, -err);
>> + else
>> + l2cap_chan_ready(chan);
>> + }
>> +}
>> +
>> +static void l2cap_logical_move_channel(struct l2cap_chan *chan,
>> + struct hci_chan *hchan)
>> +{
>> + chan->hs_hcon = hchan->conn;
>> + chan->hs_hcon->l2cap_data = chan->conn;
>> +
>> + BT_DBG("move_state %d", chan->move_state);
>> +
>> + switch (chan->move_state) {
>> + case L2CAP_MOVE_WAIT_LOGICAL_COMP:
>> + /* Move confirm will be sent after a success
>> + * response is received
>> + */
>> + chan->move_state = L2CAP_MOVE_WAIT_RSP_SUCCESS;
>> + break;
>> + case L2CAP_MOVE_WAIT_LOGICAL_CFM:
>> + if (test_bit(CONN_LOCAL_BUSY, &chan->conn_state)) {
>> + chan->move_state = L2CAP_MOVE_WAIT_LOCAL_BUSY;
>> + } else if (chan->move_role == L2CAP_MOVE_ROLE_INITIATOR) {
>> + chan->move_state = L2CAP_MOVE_WAIT_CONFIRM_RSP;
>> + l2cap_send_move_chan_cfm(chan->conn, chan, chan->scid,
>> + L2CAP_MR_SUCCESS);
>> + __set_chan_timer(chan, L2CAP_MOVE_TIMEOUT);
>> + } else if (chan->move_role == L2CAP_MOVE_ROLE_RESPONDER) {
>> + chan->move_state = L2CAP_MOVE_WAIT_CONFIRM;
>> + l2cap_send_move_chan_rsp(chan->conn, chan->ident,
>> + chan->dcid, L2CAP_MR_SUCCESS);
>
> Is the any chance to create a generic helper for the send_move_chan_*
> for both roles. I have seen this snipped a few times.
The send_move_chan_* functions are helpers already, but I've made
l2cap_send_move_chan_cfm() and l2cap_send_move_chan_rsp() cover the
common cases better. __set_chan_timer() is now inside
l2cap_send_move_chan_cfm().
>
>> + }
>> + break;
>> + default:
>> + /* Move was not in expected state, free the channel */
>> + chan->hs_hchan = NULL;
>> + chan->hs_hcon = NULL;
>> +
>> + /* Placeholder - free the logical link */
>
> Maybe centralizing this is a helper function. Or do we expect something
> different here.
Ok.
>> +
>> + chan->move_state = L2CAP_MOVE_STABLE;
>> + }
>> +}
>> +
>> +/* Call with chan locked */
>> static void l2cap_logical_cfm(struct l2cap_chan *chan, struct hci_chan *hchan,
>> u8 status)
>> {
>> - /* Placeholder */
>> - return;
>> + BT_DBG("chan %p, hchan %p, status %d", chan, hchan, status);
>> +
>> + if (status) {
>> + l2cap_logical_fail(chan);
>> + } else if (chan->state != BT_CONNECTED) {
>> + /* Ignore logical link if channel is on BR/EDR */
>> + if (chan->local_amp_id)
>> + l2cap_logical_create_channel(chan, hchan);
>> + } else {
>> + l2cap_logical_move_channel(chan, hchan);
>> + }
>> }
>>
>> static inline int l2cap_move_channel_req(struct l2cap_conn *conn,
Thanks,
--
Mat Martineau
Employee of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
^ permalink raw reply
* [PATCH 5/5 v2] Bluetooth: Read adversiting channel TX power during init sequence
From: Johan Hedberg @ 2012-10-19 17:57 UTC (permalink / raw)
To: linux-bluetooth
In-Reply-To: <1350669469-7719-1-git-send-email-johan.hedberg@gmail.com>
From: Johan Hedberg <johan.hedberg@intel.com>
This patch adds the reading of the LE advertising channel TX power to
the HCI init sequence of LE-capable controllers. This data will be used
e.g. for inclusion in the advertising data packets when advertising is
enabled.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
---
include/net/bluetooth/hci.h | 6 ++++++
include/net/bluetooth/hci_core.h | 2 ++
net/bluetooth/hci_event.c | 20 ++++++++++++++++++++
3 files changed, 28 insertions(+)
diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index 88cbbda..348f4bf 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -932,6 +932,12 @@ struct hci_rp_le_read_buffer_size {
__u8 le_max_pkt;
} __packed;
+#define HCI_OP_LE_READ_ADV_TX_POWER 0x2007
+struct hci_rp_le_read_adv_tx_power {
+ __u8 status;
+ __s8 tx_power;
+} __packed;
+
#define HCI_OP_LE_SET_SCAN_PARAM 0x200b
struct hci_cp_le_set_scan_param {
__u8 type;
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 9fe8e2d..8260bf2 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -278,6 +278,8 @@ struct hci_dev {
struct work_struct le_scan;
struct le_scan_params le_scan_params;
+ __s8 adv_tx_power;
+
int (*open)(struct hci_dev *hdev);
int (*close)(struct hci_dev *hdev);
int (*flush)(struct hci_dev *hdev);
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 78f1af5..fd5a51c 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -594,6 +594,9 @@ static void le_init(struct hci_dev *hdev)
{
/* Read LE Buffer Size */
hci_send_cmd(hdev, HCI_OP_LE_READ_BUFFER_SIZE, 0, NULL);
+
+ /* Read LE Advertising Channel TX Power */
+ hci_send_cmd(hdev, HCI_OP_LE_READ_ADV_TX_POWER, 0, NULL);
}
static void hci_setup(struct hci_dev *hdev)
@@ -1073,6 +1076,19 @@ static void hci_cc_le_read_buffer_size(struct hci_dev *hdev,
hci_req_complete(hdev, HCI_OP_LE_READ_BUFFER_SIZE, rp->status);
}
+static void hci_cc_le_read_adv_tx_power(struct hci_dev *hdev,
+ struct sk_buff *skb)
+{
+ struct hci_rp_le_read_adv_tx_power *rp = (void *) skb->data;
+
+ BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
+
+ if (!rp->status)
+ hdev->adv_tx_power = rp->tx_power;
+
+ hci_req_complete(hdev, HCI_OP_LE_READ_ADV_TX_POWER, rp->status);
+}
+
static void hci_cc_le_set_event_mask(struct hci_dev *hdev, struct sk_buff *skb)
{
__u8 status = *((__u8 *) skb->data);
@@ -2505,6 +2521,10 @@ static void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
hci_cc_le_read_buffer_size(hdev, skb);
break;
+ case HCI_OP_LE_READ_ADV_TX_POWER:
+ hci_cc_le_read_adv_tx_power(hdev, skb);
+ break;
+
case HCI_OP_LE_SET_EVENT_MASK:
hci_cc_le_set_event_mask(hdev, skb);
break;
--
1.7.10.4
^ permalink raw reply related
* [PATCH 4/5 v2] Bluetooth: Fix HCI command sending when powering on LE-only adapters
From: Johan Hedberg @ 2012-10-19 17:57 UTC (permalink / raw)
To: linux-bluetooth
In-Reply-To: <1350669469-7719-1-git-send-email-johan.hedberg@gmail.com>
From: Johan Hedberg <johan.hedberg@intel.com>
This patch makes sure that we don't send BR/EDR-only commands for
LE-only adapters when they get powered on. Doing this would just cause
command errors.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
---
net/bluetooth/mgmt.c | 34 +++++++++++++++++++++-------------
1 file changed, 21 insertions(+), 13 deletions(-)
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index e6d8f73..3fe74f4 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -2872,6 +2872,21 @@ static void settings_rsp(struct pending_cmd *cmd, void *data)
mgmt_pending_free(cmd);
}
+static int set_bredr_scan(struct hci_dev *hdev)
+{
+ u8 scan = 0;
+
+ if (test_bit(HCI_CONNECTABLE, &hdev->dev_flags))
+ scan |= SCAN_PAGE;
+ if (test_bit(HCI_DISCOVERABLE, &hdev->dev_flags))
+ scan |= SCAN_INQUIRY;
+
+ if (!scan)
+ return 0;
+
+ return hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan);
+}
+
int mgmt_powered(struct hci_dev *hdev, u8 powered)
{
struct cmd_lookup match = { NULL, hdev };
@@ -2883,19 +2898,12 @@ int mgmt_powered(struct hci_dev *hdev, u8 powered)
mgmt_pending_foreach(MGMT_OP_SET_POWERED, hdev, settings_rsp, &match);
if (powered) {
- u8 scan = 0;
-
- if (test_bit(HCI_CONNECTABLE, &hdev->dev_flags))
- scan |= SCAN_PAGE;
- if (test_bit(HCI_DISCOVERABLE, &hdev->dev_flags))
- scan |= SCAN_INQUIRY;
-
- if (scan)
- hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan);
-
- update_class(hdev);
- update_name(hdev, hdev->dev_name);
- update_eir(hdev);
+ if (lmp_bredr_capable(hdev)) {
+ set_bredr_scan(hdev);
+ update_class(hdev);
+ update_name(hdev, hdev->dev_name);
+ update_eir(hdev);
+ }
} else {
u8 status = MGMT_STATUS_NOT_POWERED;
mgmt_pending_foreach(0, hdev, cmd_status_rsp, &status);
--
1.7.10.4
^ permalink raw reply related
* [PATCH 3/5 v2] Bluetooth: Add setting of the LE event mask
From: Johan Hedberg @ 2012-10-19 17:57 UTC (permalink / raw)
To: linux-bluetooth
In-Reply-To: <1350669469-7719-1-git-send-email-johan.hedberg@gmail.com>
From: Johan Hedberg <johan.hedberg@intel.com>
This patch adds setting of the LE event mask to the HCI init procedure
for LE-capable controllers. Right now we only set the default mask which
is good enough for the events available in the 4.0 core specification.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
---
net/bluetooth/hci_event.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index f4f0b8b..78f1af5 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -550,6 +550,13 @@ static void hci_setup_event_mask(struct hci_dev *hdev)
events[7] |= 0x20; /* LE Meta-Event */
hci_send_cmd(hdev, HCI_OP_SET_EVENT_MASK, sizeof(events), events);
+
+ if (lmp_le_capable(hdev)) {
+ memset(events, 0, sizeof(events));
+ events[0] = 0x1f;
+ hci_send_cmd(hdev, HCI_OP_LE_SET_EVENT_MASK,
+ sizeof(events), events);
+ }
}
static void bredr_init(struct hci_dev *hdev)
@@ -1066,6 +1073,15 @@ static void hci_cc_le_read_buffer_size(struct hci_dev *hdev,
hci_req_complete(hdev, HCI_OP_LE_READ_BUFFER_SIZE, rp->status);
}
+static void hci_cc_le_set_event_mask(struct hci_dev *hdev, struct sk_buff *skb)
+{
+ __u8 status = *((__u8 *) skb->data);
+
+ BT_DBG("%s status 0x%2.2x", hdev->name, status);
+
+ hci_req_complete(hdev, HCI_OP_LE_SET_EVENT_MASK, status);
+}
+
static void hci_cc_user_confirm_reply(struct hci_dev *hdev, struct sk_buff *skb)
{
struct hci_rp_user_confirm_reply *rp = (void *) skb->data;
@@ -2489,6 +2505,10 @@ static void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
hci_cc_le_read_buffer_size(hdev, skb);
break;
+ case HCI_OP_LE_SET_EVENT_MASK:
+ hci_cc_le_set_event_mask(hdev, skb);
+ break;
+
case HCI_OP_USER_CONFIRM_REPLY:
hci_cc_user_confirm_reply(hdev, skb);
break;
--
1.7.10.4
^ permalink raw reply related
* [PATCH 2/5 v2] Bluetooth: Fix LE MTU reporting for HCIGETDEVINFO
From: Johan Hedberg @ 2012-10-19 17:57 UTC (permalink / raw)
To: linux-bluetooth
In-Reply-To: <1350669469-7719-1-git-send-email-johan.hedberg@gmail.com>
From: Johan Hedberg <johan.hedberg@intel.com>
This patch fixes the use of le_mtu and le_pkts values in the
HCIGETDEVINFO ioctl for LE-only controllers.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
---
net/bluetooth/hci_core.c | 15 +++++++++++----
1 file changed, 11 insertions(+), 4 deletions(-)
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index dd05ed0..487308b 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -990,10 +990,17 @@ int hci_get_dev_info(void __user *arg)
di.type = (hdev->bus & 0x0f) | (hdev->dev_type << 4);
di.flags = hdev->flags;
di.pkt_type = hdev->pkt_type;
- di.acl_mtu = hdev->acl_mtu;
- di.acl_pkts = hdev->acl_pkts;
- di.sco_mtu = hdev->sco_mtu;
- di.sco_pkts = hdev->sco_pkts;
+ if (lmp_bredr_capable(hdev)) {
+ di.acl_mtu = hdev->acl_mtu;
+ di.acl_pkts = hdev->acl_pkts;
+ di.sco_mtu = hdev->sco_mtu;
+ di.sco_pkts = hdev->sco_pkts;
+ } else {
+ di.acl_mtu = hdev->le_mtu;
+ di.acl_pkts = hdev->le_pkts;
+ di.sco_mtu = 0;
+ di.sco_pkts = 0;
+ }
di.link_policy = hdev->link_policy;
di.link_mode = hdev->link_mode;
--
1.7.10.4
^ permalink raw reply related
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