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Bluetooth: Fixes l2cap "command reject" reply according to spec

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There can 3 reasons for the "command reject" reply produced
by the stack. Each such reply should be accompanied by the
relevand data ( as defined in spec. ). Currently there is one
instance of "command reject" reply with reason "invalid cid"
wich is fixed. Also, added clean-up definitions related to the
"command reject" replies.

Signed-off-by: Ilia Kolomisnky <iliak@ti.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
This commit is contained in:
Ilia Kolomisnky 2011-07-10 08:47:44 +03:00 committed by Gustavo F. Padovan
parent 8f36011924
commit e2fd318e3a
2 changed files with 27 additions and 7 deletions
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19
include/net/bluetooth/l2cap.h
View File

@ -129,6 +129,12 @@ struct l2cap_conninfo {
#define L2CAP_SDU_END 0x8000
#define L2CAP_SDU_CONTINUE 0xC000
/* L2CAP Command rej. reasons */
#define L2CAP_REJ_NOT_UNDERSTOOD 0x0000
#define L2CAP_REJ_MTU_EXCEEDED 0x0001
#define L2CAP_REJ_INVALID_CID 0x0002
/* L2CAP structures */
struct l2cap_hdr {
__le16 len;
@ -143,10 +149,21 @@ struct l2cap_cmd_hdr {
} __packed;
#define L2CAP_CMD_HDR_SIZE 4
struct l2cap_cmd_rej {
struct l2cap_cmd_rej_unk {
__le16 reason;
} __packed;
struct l2cap_cmd_rej_mtu {
__le16 reason;
__le16 max_mtu;
} __packed;
struct l2cap_cmd_rej_cid {
__le16 reason;
__le16 scid;
__le16 dcid;
} __packed;
struct l2cap_conn_req {
__le16 psm;
__le16 scid;

15
net/bluetooth/l2cap_core.c
View File

@ -2277,9 +2277,9 @@ done:
static inline int l2cap_command_rej(struct l2cap_conn *conn, struct l2cap_cmd_hdr *cmd, u8 *data)
{
struct l2cap_cmd_rej *rej = (struct l2cap_cmd_rej *) data;
struct l2cap_cmd_rej_unk *rej = (struct l2cap_cmd_rej_unk *) data;
if (rej->reason != 0x0000)
if (rej->reason != L2CAP_REJ_NOT_UNDERSTOOD)
return 0;
if ((conn->info_state & L2CAP_INFO_FEAT_MASK_REQ_SENT) &&
@ -2524,9 +2524,12 @@ static inline int l2cap_config_req(struct l2cap_conn *conn, struct l2cap_cmd_hdr
sk = chan->sk;
if (chan->state != BT_CONFIG) {
struct l2cap_cmd_rej rej;
struct l2cap_cmd_rej_cid rej;
rej.reason = cpu_to_le16(L2CAP_REJ_INVALID_CID);
rej.scid = cpu_to_le16(chan->scid);
rej.dcid = cpu_to_le16(chan->dcid);
rej.reason = cpu_to_le16(0x0002);
l2cap_send_cmd(conn, cmd->ident, L2CAP_COMMAND_REJ,
sizeof(rej), &rej);
goto unlock;
@ -3017,12 +3020,12 @@ static inline void l2cap_sig_channel(struct l2cap_conn *conn,
err = l2cap_bredr_sig_cmd(conn, &cmd, cmd_len, data);
if (err) {
struct l2cap_cmd_rej rej;
struct l2cap_cmd_rej_unk rej;
BT_ERR("Wrong link type (%d)", err);
/* FIXME: Map err to a valid reason */
rej.reason = cpu_to_le16(0);
rej.reason = cpu_to_le16(L2CAP_REJ_NOT_UNDERSTOOD);
l2cap_send_cmd(conn, cmd.ident, L2CAP_COMMAND_REJ, sizeof(rej), &rej);
}