Bluetooth: Request L2CAP fixed channel list if available
If the extended features mask indicates support for fixed channels,
request the list of available fixed channels. This also enables the
fixed channel features bit so remote implementations can request
information about it. Currently only the signal channel will be
listed.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
diff --git a/include/net/bluetooth/l2cap.h b/include/net/bluetooth/l2cap.h
index 4781d28..abfec88 100644
--- a/include/net/bluetooth/l2cap.h
+++ b/include/net/bluetooth/l2cap.h
@@ -185,6 +185,7 @@
/* info type */
#define L2CAP_IT_CL_MTU 0x0001
#define L2CAP_IT_FEAT_MASK 0x0002
+#define L2CAP_IT_FIXED_CHAN 0x0003
/* info result */
#define L2CAP_IR_SUCCESS 0x0000
diff --git a/net/bluetooth/l2cap.c b/net/bluetooth/l2cap.c
index 88340d2..985366c 100644
--- a/net/bluetooth/l2cap.c
+++ b/net/bluetooth/l2cap.c
@@ -50,9 +50,10 @@
#include <net/bluetooth/hci_core.h>
#include <net/bluetooth/l2cap.h>
-#define VERSION "2.12"
+#define VERSION "2.13"
-static u32 l2cap_feat_mask = 0x0000;
+static u32 l2cap_feat_mask = 0x0080;
+static u8 l2cap_fixed_chan[8] = { 0x02, };
static const struct proto_ops l2cap_sock_ops;
@@ -456,9 +457,8 @@
{
struct l2cap_conn *conn = (void *) arg;
- conn->info_ident = 0;
-
conn->info_state |= L2CAP_INFO_FEAT_MASK_REQ_DONE;
+ conn->info_ident = 0;
l2cap_conn_start(conn);
}
@@ -1793,10 +1793,10 @@
if ((conn->info_state & L2CAP_INFO_FEAT_MASK_REQ_SENT) &&
cmd->ident == conn->info_ident) {
- conn->info_ident = 0;
del_timer(&conn->info_timer);
conn->info_state |= L2CAP_INFO_FEAT_MASK_REQ_DONE;
+ conn->info_ident = 0;
l2cap_conn_start(conn);
}
@@ -2165,6 +2165,14 @@
put_unaligned(cpu_to_le32(l2cap_feat_mask), (__le32 *) rsp->data);
l2cap_send_cmd(conn, cmd->ident,
L2CAP_INFO_RSP, sizeof(buf), buf);
+ } else if (type == L2CAP_IT_FIXED_CHAN) {
+ u8 buf[12];
+ struct l2cap_info_rsp *rsp = (struct l2cap_info_rsp *) buf;
+ rsp->type = cpu_to_le16(L2CAP_IT_FIXED_CHAN);
+ rsp->result = cpu_to_le16(L2CAP_IR_SUCCESS);
+ memcpy(buf + 4, l2cap_fixed_chan, 8);
+ l2cap_send_cmd(conn, cmd->ident,
+ L2CAP_INFO_RSP, sizeof(buf), buf);
} else {
struct l2cap_info_rsp rsp;
rsp.type = cpu_to_le16(type);
@@ -2186,14 +2194,28 @@
BT_DBG("type 0x%4.4x result 0x%2.2x", type, result);
- conn->info_ident = 0;
-
del_timer(&conn->info_timer);
if (type == L2CAP_IT_FEAT_MASK) {
conn->feat_mask = get_unaligned_le32(rsp->data);
+ if (conn->feat_mask & 0x0080) {
+ struct l2cap_info_req req;
+ req.type = cpu_to_le16(L2CAP_IT_FIXED_CHAN);
+
+ conn->info_ident = l2cap_get_ident(conn);
+
+ l2cap_send_cmd(conn, conn->info_ident,
+ L2CAP_INFO_REQ, sizeof(req), &req);
+ } else {
+ conn->info_state |= L2CAP_INFO_FEAT_MASK_REQ_DONE;
+ conn->info_ident = 0;
+
+ l2cap_conn_start(conn);
+ }
+ } else if (type == L2CAP_IT_FIXED_CHAN) {
conn->info_state |= L2CAP_INFO_FEAT_MASK_REQ_DONE;
+ conn->info_ident = 0;
l2cap_conn_start(conn);
}
@@ -2589,7 +2611,7 @@
goto drop;
skb_copy_from_linear_data(skb, skb_put(conn->rx_skb, skb->len),
- skb->len);
+ skb->len);
conn->rx_len = len - skb->len;
} else {
BT_DBG("Cont: frag len %d (expecting %d)", skb->len, conn->rx_len);
@@ -2611,7 +2633,7 @@
}
skb_copy_from_linear_data(skb, skb_put(conn->rx_skb, skb->len),
- skb->len);
+ skb->len);
conn->rx_len -= skb->len;
if (!conn->rx_len) {