Hi Vinicius,
* Vinicius Costa Gomes <vinicius.gomes@xxxxxxxxxxxxx> [2010-12-06 18:43:45 -0300]:
> These simple commands will allow the SMP procedure to be started
> and terminated with a not supported error. This is the first step
> toward something useful.
>
> Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@xxxxxxxxxxxxx>
> Signed-off-by: Anderson Briglia <anderson.briglia@xxxxxxxxxxxxx>
> ---
> include/net/bluetooth/smp.h | 4 +
> net/bluetooth/Makefile | 1 +
> net/bluetooth/{l2cap.c => l2cap_core.c} | 0
> net/bluetooth/smp.c | 144 +++++++++++++++++++++++++++++++
> 4 files changed, 149 insertions(+), 0 deletions(-)
> rename net/bluetooth/{l2cap.c => l2cap_core.c} (100%)
> create mode 100644 net/bluetooth/smp.c
>
> diff --git a/include/net/bluetooth/smp.h b/include/net/bluetooth/smp.h
> index 8f2edbf..b9603cc 100644
> --- a/include/net/bluetooth/smp.h
> +++ b/include/net/bluetooth/smp.h
> @@ -73,4 +73,8 @@ struct smp_cmd_security_req {
> #define SMP_UNSPECIFIED 0x08
> #define SMP_REPEATED_ATTEMPTS 0x09
>
> +/* SMP Commands */
> +int smp_conn_security(struct l2cap_conn *conn, __u8 sec_level);
> +int smp_sig_channel(struct l2cap_conn *conn, struct sk_buff *skb);
> +
> #endif /* __SMP_H */
> diff --git a/net/bluetooth/Makefile b/net/bluetooth/Makefile
> index d1e433f..d138b23 100644
> --- a/net/bluetooth/Makefile
> +++ b/net/bluetooth/Makefile
> @@ -11,3 +11,4 @@ obj-$(CONFIG_BT_CMTP) += cmtp/
> obj-$(CONFIG_BT_HIDP) += hidp/
>
> bluetooth-objs := af_bluetooth.o hci_core.o hci_conn.o hci_event.o hci_sock.o hci_sysfs.o lib.o
> +l2cap-objs := l2cap_core.o smp.o
> diff --git a/net/bluetooth/l2cap.c b/net/bluetooth/l2cap_core.c
> similarity index 100%
> rename from net/bluetooth/l2cap.c
> rename to net/bluetooth/l2cap_core.c
> diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c
> new file mode 100644
> index 0000000..e427d11
> --- /dev/null
> +++ b/net/bluetooth/smp.c
> @@ -0,0 +1,144 @@
> +/*
> + BlueZ - Bluetooth protocol stack for Linux
> + Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
> +
> + This program is free software; you can redistribute it and/or modify
> + it under the terms of the GNU General Public License version 2 as
> + published by the Free Software Foundation;
> +
> + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
> + OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
> + IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
> + CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
> + WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
> + ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
> + OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
> +
> + ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
> + COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
> + SOFTWARE IS DISCLAIMED.
> +*/
> +
> +#include <net/bluetooth/bluetooth.h>
> +#include <net/bluetooth/hci_core.h>
> +#include <net/bluetooth/l2cap.h>
> +#include <net/bluetooth/smp.h>
> +
> +static struct sk_buff *smp_build_cmd(struct l2cap_conn *conn, u8 code,
> + u16 dlen, void *data)
> +{
> + struct sk_buff *skb;
> + struct l2cap_hdr *lh;
> + int len;
> +
> + len = L2CAP_HDR_SIZE + 1 + dlen;
> +
> + if (len > conn->mtu)
> + return NULL;
> +
> + skb = bt_skb_alloc(len, GFP_ATOMIC);
> + if (!skb)
> + return NULL;
> +
> + lh = (struct l2cap_hdr *) skb_put(skb, L2CAP_HDR_SIZE);
> + lh->len = cpu_to_le16(1 + dlen);
> + lh->cid = cpu_to_le16(L2CAP_CID_SMP);
> +
> + memcpy(skb_put(skb, 1), &code, 1);
> +
> + memcpy(skb_put(skb, dlen), data, dlen);
> +
> + return skb;
> +}
> +
> +static void smp_send_cmd(struct l2cap_conn *conn, u8 code, u16 len, void *data)
> +{
> + struct sk_buff *skb = smp_build_cmd(conn, code, len, data);
> +
> + BT_DBG("code 0x%2.2x", code);
> +
> + if (!skb)
> + return;
> +
> + hci_send_acl(conn->hcon, skb, 0);
> +}
> +
> +int smp_conn_security(struct l2cap_conn *conn, __u8 sec_level)
> +{
> + __u8 authreq;
> +
> + BT_DBG("conn %p hcon %p level 0x%2.2x", conn, conn->hcon, sec_level);
> +
> + switch (sec_level) {
> + case BT_SECURITY_MEDIUM:
> + /* Encrypted, no MITM protection */
> + authreq = 0x01;
> + break;
> +
> + case BT_SECURITY_HIGH:
> + /* Bonding, MITM protection */
> + authreq = 0x05;
It would be good have some defines for the authreq values.
--
Gustavo F. Padovan
http://profusion.mobi
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