From 3124b84309a0699c98bdc0ef1fc8cd5e058ad5fa Mon Sep 17 00:00:00 2001 From: Marcel Holtmann Date: Sat, 12 Oct 2013 07:19:32 -0700 Subject: [PATCH] Bluetooth: Allow 3D profile to use security mode 4 level 0 The PSM 0x0021 is dedicated to the 3D profile and has permission to use security mode 4 level 0 for L2CAP connectionless unicast data transfers. When establishing a L2CAP connectionless channel on PSM 0x0021, it will no longer force Secure Simple Pairing. Signed-off-by: Marcel Holtmann Signed-off-by: Johan Hedberg --- include/net/bluetooth/l2cap.h | 1 + net/bluetooth/l2cap_core.c | 10 ++++++++++ net/bluetooth/l2cap_sock.c | 4 ++++ 3 files changed, 15 insertions(+) diff --git a/include/net/bluetooth/l2cap.h b/include/net/bluetooth/l2cap.h index f141b5f..12523c7 100644 --- a/include/net/bluetooth/l2cap.h +++ b/include/net/bluetooth/l2cap.h @@ -237,6 +237,7 @@ struct l2cap_conn_rsp { /* protocol/service multiplexer (PSM) */ #define L2CAP_PSM_SDP 0x0001 #define L2CAP_PSM_RFCOMM 0x0003 +#define L2CAP_PSM_3DSP 0x0021 /* channel indentifier */ #define L2CAP_CID_SIGNALING 0x0001 diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c index cc51cb8..e932ffd 100644 --- a/net/bluetooth/l2cap_core.c +++ b/net/bluetooth/l2cap_core.c @@ -688,6 +688,16 @@ static inline u8 l2cap_get_auth_type(struct l2cap_chan *chan) return HCI_AT_NO_BONDING; } break; + case L2CAP_CHAN_CONN_LESS: + if (chan->psm == __constant_cpu_to_le16(L2CAP_PSM_3DSP)) { + if (chan->sec_level == BT_SECURITY_LOW) + chan->sec_level = BT_SECURITY_SDP; + } + if (chan->sec_level == BT_SECURITY_HIGH) + return HCI_AT_NO_BONDING_MITM; + else + return HCI_AT_NO_BONDING; + break; case L2CAP_CHAN_CONN_ORIENTED: if (chan->psm == __constant_cpu_to_le16(L2CAP_PSM_SDP)) { if (chan->sec_level == BT_SECURITY_LOW) diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c index bee98eb..bd6fe7f 100644 --- a/net/bluetooth/l2cap_sock.c +++ b/net/bluetooth/l2cap_sock.c @@ -101,6 +101,10 @@ static int l2cap_sock_bind(struct socket *sock, struct sockaddr *addr, int alen) goto done; switch (chan->chan_type) { + case L2CAP_CHAN_CONN_LESS: + if (__le16_to_cpu(la.l2_psm) == L2CAP_PSM_3DSP) + chan->sec_level = BT_SECURITY_SDP; + break; case L2CAP_CHAN_CONN_ORIENTED: if (__le16_to_cpu(la.l2_psm) == L2CAP_PSM_SDP || __le16_to_cpu(la.l2_psm) == L2CAP_PSM_RFCOMM) -- 2.7.4