static int l2cap_sock_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t len, int flags)
{
struct sock *sk = sock->sk;
int err;
lock_sock(sk);
if (sk->sk_state == BT_CONNECT2 && bt_sk(sk)->defer_setup) {
struct l2cap_conn_rsp rsp;
struct l2cap_conn *conn = l2cap_pi(sk)->conn;
u8 buf[128];
if (l2cap_pi(sk)->amp_id) {
/* Physical link must be brought up before connection
* completes.
*/
amp_accept_physical(conn, l2cap_pi(sk)->amp_id, sk);
release_sock(sk);
return 0;
}
sk->sk_state = BT_CONFIG;
rsp.scid = cpu_to_le16(l2cap_pi(sk)->dcid);
rsp.dcid = cpu_to_le16(l2cap_pi(sk)->scid);
rsp.result = cpu_to_le16(L2CAP_CR_SUCCESS);
rsp.status = cpu_to_le16(L2CAP_CS_NO_INFO);
l2cap_send_cmd(l2cap_pi(sk)->conn, l2cap_pi(sk)->ident,
L2CAP_CONN_RSP, sizeof(rsp), &rsp);
if (l2cap_pi(sk)->conf_state & L2CAP_CONF_REQ_SENT) {
release_sock(sk);
return 0;
}
l2cap_pi(sk)->conf_state |= L2CAP_CONF_REQ_SENT;
l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ,
l2cap_build_conf_req(sk, buf), buf);
l2cap_pi(sk)->num_conf_req++;
release_sock(sk);
return 0;
}
release_sock(sk);
if (sock->type == SOCK_STREAM)
err = bt_sock_stream_recvmsg(iocb, sock, msg, len, flags);
else
err = bt_sock_recvmsg(iocb, sock, msg, len, flags);
if (err >= 0)
l2cap_ertm_recv_done(sk);
return err;
}
void __l2cap_sock_close(struct sock *sk, int reason)
{
struct l2cap_conn *conn = l2cap_pi(sk)->conn;
BT_DBG("sk %p state %d socket %p", sk, sk->sk_state, sk->sk_socket);
switch (sk->sk_state) {
case BT_LISTEN:
l2cap_sock_cleanup_listen(sk);
break;
case BT_CONNECTED:
case BT_CONFIG:
if ((sk->sk_type == SOCK_SEQPACKET ||
sk->sk_type == SOCK_STREAM) &&
conn->hcon->type == ACL_LINK) {
l2cap_sock_set_timer(sk, sk->sk_sndtimeo);
l2cap_send_disconn_req(conn, sk, reason);
} else
l2cap_chan_del(sk, reason);
break;
case BT_CONNECT2:
if ((sk->sk_type == SOCK_SEQPACKET ||
sk->sk_type == SOCK_STREAM) &&
conn->hcon->type == ACL_LINK) {
struct l2cap_conn_rsp rsp;
__u16 result;
if (bt_sk(sk)->defer_setup)
result = L2CAP_CR_SEC_BLOCK;
else
result = L2CAP_CR_BAD_PSM;
sk->sk_state = BT_DISCONN;
rsp.scid = cpu_to_le16(l2cap_pi(sk)->dcid);
rsp.dcid = cpu_to_le16(l2cap_pi(sk)->scid);
rsp.result = cpu_to_le16(result);
rsp.status = cpu_to_le16(L2CAP_CS_NO_INFO);
l2cap_send_cmd(conn, l2cap_pi(sk)->ident,
L2CAP_CONN_RSP, sizeof(rsp), &rsp);
}
l2cap_chan_del(sk, reason);
break;
case BT_CONNECT:
case BT_DISCONN:
l2cap_chan_del(sk, reason);
break;
default:
sock_set_flag(sk, SOCK_ZAPPED);
break;
}
}
static struct sock *__l2cap_get_sock_by_addr(__le16 psm, bdaddr_t *src)
{
struct sock *sk;
sk_for_each(sk, &l2cap_sk_list.head)
if (l2cap_pi(sk)->sport == psm && !bacmp(&bt_sk(sk)->src, src))
goto found;
sk = NULL;
found:
return sk;
}
static int l2cap_sock_getname(struct socket *sock, struct sockaddr *addr, int *len, int peer)
{
struct sockaddr_l2 *la = (struct sockaddr_l2 *) addr;
struct sock *sk = sock->sk;
BT_DBG("sock %p, sk %p", sock, sk);
addr->sa_family = AF_BLUETOOTH;
*len = sizeof(struct sockaddr_l2);
if (peer) {
la->l2_psm = l2cap_pi(sk)->psm;
bacpy(&la->l2_bdaddr, &bt_sk(sk)->dst);
la->l2_cid = cpu_to_le16(l2cap_pi(sk)->dcid);
} else {
la->l2_psm = l2cap_pi(sk)->sport;
bacpy(&la->l2_bdaddr, &bt_sk(sk)->src);
la->l2_cid = cpu_to_le16(l2cap_pi(sk)->scid);
}
return 0;
}
int smp_link_encrypt_cmplt(struct l2cap_conn *conn, u8 status, u8 encrypt)
{
struct hci_conn *hcon = conn->hcon;
BT_DBG("smp: %d %d %d", status, encrypt, hcon->sec_req);
clear_bit(HCI_CONN_ENCRYPT_PEND, &hcon->pend);
#ifdef BLUETOOTH_CUSTOMIZE
if (test_bit(HCI_CONN_LE_CONN_UPDATE_PEND, &hcon->pend)) {
struct sock *sk;
BT_DBG("HCI_CONN_LE_CONN_UPDATE_PEND");
sk = l2cap_find_sock_by_fixed_cid_and_dir(4, conn->src, conn->dst, 0);
if (sk) {
BT_DBG("call hci_le_conn_update");
hci_le_conn_update(hcon,
bt_sk(sk)->le_params.interval_min,
bt_sk(sk)->le_params.interval_max,
bt_sk(sk)->le_params.latency,
bt_sk(sk)->le_params.supervision_timeout);
}
}
#endif /* BLUETOOTH_CUSTOMIZE */
if (!status && encrypt && hcon->sec_level < hcon->pending_sec_level)
hcon->sec_level = hcon->pending_sec_level;
if (!status && encrypt && !hcon->sec_req)
return smp_distribute_keys(conn, 0);
/* Fall back to Pairing request if failed a Link Security request */
else if (hcon->sec_req && (status || !encrypt))
smp_conn_security(conn, hcon->pending_sec_level);
hci_conn_put(hcon);
return 0;
}
static int l2cap_sock_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t len, int flags)
{
struct sock *sk = sock->sk;
lock_sock(sk);
if (sk->sk_state == BT_CONNECT2 && bt_sk(sk)->defer_setup) {
struct l2cap_conn_rsp rsp;
struct l2cap_conn *conn = l2cap_pi(sk)->conn;
u8 buf[128];
sk->sk_state = BT_CONFIG;
rsp.scid = cpu_to_le16(l2cap_pi(sk)->dcid);
rsp.dcid = cpu_to_le16(l2cap_pi(sk)->scid);
rsp.result = cpu_to_le16(L2CAP_CR_SUCCESS);
rsp.status = cpu_to_le16(L2CAP_CS_NO_INFO);
l2cap_send_cmd(l2cap_pi(sk)->conn, l2cap_pi(sk)->ident,
L2CAP_CONN_RSP, sizeof(rsp), &rsp);
if (l2cap_pi(sk)->conf_state & L2CAP_CONF_REQ_SENT) {
release_sock(sk);
return 0;
}
l2cap_pi(sk)->conf_state |= L2CAP_CONF_REQ_SENT;
l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ,
l2cap_build_conf_req(sk, buf), buf);
l2cap_pi(sk)->num_conf_req++;
release_sock(sk);
return 0;
}
release_sock(sk);
if (sock->type == SOCK_STREAM)
return bt_sock_stream_recvmsg(iocb, sock, msg, len, flags);
return bt_sock_recvmsg(iocb, sock, msg, len, flags);
}
struct sock *l2cap_sock_alloc(struct net *net, struct socket *sock, int proto, gfp_t prio)
{
struct sock *sk;
sk = sk_alloc(net, PF_BLUETOOTH, prio, &l2cap_proto);
if (!sk)
return NULL;
sock_init_data(sock, sk);
INIT_LIST_HEAD(&bt_sk(sk)->accept_q);
sk->sk_destruct = l2cap_sock_destruct;
sk->sk_sndtimeo = msecs_to_jiffies(L2CAP_CONN_TIMEOUT);
sock_reset_flag(sk, SOCK_ZAPPED);
sk->sk_protocol = proto;
sk->sk_state = BT_OPEN;
setup_timer(&sk->sk_timer, l2cap_sock_timeout, (unsigned long) sk);
bt_sock_link(&l2cap_sk_list, sk);
return sk;
}
static int l2cap_sock_getsockopt_old(struct socket *sock, int optname, char __user *optval, int __user *optlen)
{
struct sock *sk = sock->sk;
struct l2cap_options opts;
struct l2cap_conninfo cinfo;
int len, err = 0;
u32 opt;
BT_DBG("sk %p", sk);
if (get_user(len, optlen))
return -EFAULT;
lock_sock(sk);
switch (optname) {
case L2CAP_OPTIONS:
memset(&opts, 0, sizeof(opts));
opts.imtu = l2cap_pi(sk)->imtu;
opts.omtu = l2cap_pi(sk)->omtu;
opts.flush_to = l2cap_pi(sk)->flush_to;
opts.mode = l2cap_pi(sk)->mode;
opts.fcs = l2cap_pi(sk)->fcs;
opts.max_tx = l2cap_pi(sk)->max_tx;
opts.txwin_size = l2cap_pi(sk)->tx_win;
len = min_t(unsigned int, len, sizeof(opts));
if (copy_to_user(optval, (char *) &opts, len))
err = -EFAULT;
break;
case L2CAP_LM:
switch (l2cap_pi(sk)->sec_level) {
case BT_SECURITY_LOW:
opt = L2CAP_LM_AUTH;
break;
case BT_SECURITY_MEDIUM:
opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT;
break;
case BT_SECURITY_HIGH:
opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT |
L2CAP_LM_SECURE;
break;
default:
opt = 0;
break;
}
if (l2cap_pi(sk)->role_switch)
opt |= L2CAP_LM_MASTER;
if (l2cap_pi(sk)->force_reliable)
opt |= L2CAP_LM_RELIABLE;
if (l2cap_pi(sk)->flushable)
opt |= L2CAP_LM_FLUSHABLE;
if (put_user(opt, (u32 __user *) optval))
err = -EFAULT;
break;
case L2CAP_CONNINFO:
if (sk->sk_state != BT_CONNECTED &&
!(sk->sk_state == BT_CONNECT2 &&
bt_sk(sk)->defer_setup)) {
err = -ENOTCONN;
break;
}
cinfo.hci_handle = l2cap_pi(sk)->conn->hcon->handle;
memcpy(cinfo.dev_class, l2cap_pi(sk)->conn->hcon->dev_class, 3);
len = min_t(unsigned int, len, sizeof(cinfo));
if (copy_to_user(optval, (char *) &cinfo, len))
err = -EFAULT;
break;
default:
err = -ENOPROTOOPT;
break;
}
release_sock(sk);
return err;
}
static int l2cap_sock_connect(struct socket *sock, struct sockaddr *addr, int alen, int flags)
{
struct sock *sk = sock->sk;
struct sockaddr_l2 la;
int len, err = 0;
BT_DBG("sk %p type %d mode %d state %d", sk, sk->sk_type,
l2cap_pi(sk)->mode, sk->sk_state);
if (!addr || alen < sizeof(addr->sa_family) ||
addr->sa_family != AF_BLUETOOTH)
return -EINVAL;
memset(&la, 0, sizeof(la));
len = min_t(unsigned int, sizeof(la), alen);
memcpy(&la, addr, len);
if (la.l2_cid && la.l2_psm)
return -EINVAL;
lock_sock(sk);
if ((sk->sk_type == SOCK_SEQPACKET || sk->sk_type == SOCK_STREAM)
&& !(la.l2_psm || la.l2_cid || l2cap_pi(sk)->fixed_channel)) {
err = -EINVAL;
goto done;
}
switch (l2cap_pi(sk)->mode) {
case L2CAP_MODE_BASIC:
break;
case L2CAP_MODE_ERTM:
case L2CAP_MODE_STREAMING:
if (!disable_ertm)
break;
/* fall through */
default:
err = -ENOTSUPP;
goto done;
}
switch (sk->sk_state) {
case BT_CONNECT:
case BT_CONNECT2:
case BT_CONFIG:
/* Already connecting */
goto wait;
case BT_CONNECTED:
/* Already connected */
err = -EISCONN;
goto done;
case BT_OPEN:
case BT_BOUND:
/* Can connect */
break;
default:
err = -EBADFD;
goto done;
}
/* PSM must be odd and lsb of upper byte must be 0 */
if ((__le16_to_cpu(la.l2_psm) & 0x0101) != 0x0001 &&
!l2cap_pi(sk)->fixed_channel &&
sk->sk_type != SOCK_RAW && !la.l2_cid) {
BT_DBG("Bad PSM 0x%x", (int)__le16_to_cpu(la.l2_psm));
err = -EINVAL;
goto done;
}
/* Set destination address and psm */
bacpy(&bt_sk(sk)->dst, &la.l2_bdaddr);
l2cap_pi(sk)->psm = la.l2_psm;
l2cap_pi(sk)->dcid = la.l2_cid;
err = l2cap_do_connect(sk);
if (err)
goto done;
wait:
err = bt_sock_wait_state(sk, BT_CONNECTED,
sock_sndtimeo(sk, flags & O_NONBLOCK));
done:
if (err)
BT_ERR("failed %d", err);
release_sock(sk);
return err;
}
void l2cap_sock_init(struct sock *sk, struct sock *parent)
{
struct l2cap_pinfo *pi = l2cap_pi(sk);
BT_DBG("sk %p parent %p", sk, parent);
if (parent) {
sk->sk_type = parent->sk_type;
sk->sk_rcvbuf = parent->sk_rcvbuf;
sk->sk_sndbuf = parent->sk_sndbuf;
bt_sk(sk)->defer_setup = bt_sk(parent)->defer_setup;
pi->imtu = l2cap_pi(parent)->imtu;
pi->omtu = l2cap_pi(parent)->omtu;
pi->conf_state = l2cap_pi(parent)->conf_state;
pi->mode = l2cap_pi(parent)->mode;
pi->fcs = l2cap_pi(parent)->fcs;
pi->max_tx = l2cap_pi(parent)->max_tx;
pi->tx_win = l2cap_pi(parent)->tx_win;
pi->sec_level = l2cap_pi(parent)->sec_level;
pi->role_switch = l2cap_pi(parent)->role_switch;
pi->force_reliable = l2cap_pi(parent)->force_reliable;
pi->flushable = l2cap_pi(parent)->flushable;
pi->force_active = l2cap_pi(parent)->force_active;
pi->amp_pref = l2cap_pi(parent)->amp_pref;
} else {
pi->imtu = L2CAP_DEFAULT_MTU;
pi->omtu = 0;
if (!disable_ertm && sk->sk_type == SOCK_STREAM) {
pi->mode = L2CAP_MODE_ERTM;
pi->conf_state |= L2CAP_CONF_STATE2_DEVICE;
} else {
pi->mode = L2CAP_MODE_BASIC;
}
pi->reconf_state = L2CAP_RECONF_NONE;
pi->max_tx = L2CAP_DEFAULT_MAX_TX;
pi->fcs = L2CAP_FCS_CRC16;
pi->tx_win = L2CAP_DEFAULT_TX_WINDOW;
pi->sec_level = BT_SECURITY_LOW;
pi->role_switch = 0;
pi->force_reliable = 0;
pi->flushable = 0;
pi->force_active = 1;
pi->amp_pref = BT_AMP_POLICY_REQUIRE_BR_EDR;
}
/* Default config options */
sk->sk_backlog_rcv = l2cap_data_channel;
pi->ampcon = NULL;
pi->ampchan = NULL;
pi->conf_len = 0;
pi->flush_to = L2CAP_DEFAULT_FLUSH_TO;
pi->scid = 0;
pi->dcid = 0;
pi->tx_win_max = L2CAP_TX_WIN_MAX_ENHANCED;
pi->ack_win = pi->tx_win;
pi->extended_control = 0;
pi->local_conf.fcs = pi->fcs;
pi->local_conf.flush_to = pi->flush_to;
set_default_config(&pi->remote_conf);
skb_queue_head_init(TX_QUEUE(sk));
skb_queue_head_init(SREJ_QUEUE(sk));
}
static int l2cap_sock_bind(struct socket *sock, struct sockaddr *addr, int alen)
{
struct sock *sk = sock->sk;
struct sockaddr_l2 la;
int len, err = 0;
BT_DBG("sk %p", sk);
if (!addr || addr->sa_family != AF_BLUETOOTH)
return -EINVAL;
memset(&la, 0, sizeof(la));
len = min_t(unsigned int, sizeof(la), alen);
memcpy(&la, addr, len);
if (la.l2_cid && la.l2_psm)
return -EINVAL;
lock_sock(sk);
if (sk->sk_state != BT_OPEN) {
err = -EBADFD;
goto done;
}
if (la.l2_psm) {
__u16 psm = __le16_to_cpu(la.l2_psm);
/* PSM must be odd and lsb of upper byte must be 0 */
if ((psm & 0x0101) != 0x0001) {
err = -EINVAL;
goto done;
}
/* Restrict usage of well-known PSMs */
if (psm < 0x1001 && !capable(CAP_NET_BIND_SERVICE)) {
err = -EACCES;
goto done;
}
}
write_lock_bh(&l2cap_sk_list.lock);
if (la.l2_psm && __l2cap_get_sock_by_addr(la.l2_psm, &la.l2_bdaddr)) {
err = -EADDRINUSE;
} else {
/* Save source address */
bacpy(&bt_sk(sk)->src, &la.l2_bdaddr);
l2cap_pi(sk)->psm = la.l2_psm;
l2cap_pi(sk)->sport = la.l2_psm;
sk->sk_state = BT_BOUND;
if (__le16_to_cpu(la.l2_psm) == 0x0001 ||
__le16_to_cpu(la.l2_psm) == 0x0003)
l2cap_pi(sk)->sec_level = BT_SECURITY_SDP;
}
if (la.l2_cid)
l2cap_pi(sk)->scid = la.l2_cid;
write_unlock_bh(&l2cap_sk_list.lock);
done:
release_sock(sk);
return err;
}
static int l2cap_sock_getsockopt_old(struct socket *sock, int optname,
char __user *optval, int __user *optlen)
{
struct sock *sk = sock->sk;
struct l2cap_chan *chan = l2cap_pi(sk)->chan;
struct l2cap_options opts;
struct l2cap_conninfo cinfo;
int len, err = 0;
u32 opt;
BT_DBG("sk %p", sk);
if (get_user(len, optlen))
return -EFAULT;
lock_sock(sk);
switch (optname) {
case L2CAP_OPTIONS:
/* LE sockets should use BT_SNDMTU/BT_RCVMTU, but since
* legacy ATT code depends on getsockopt for
* L2CAP_OPTIONS we need to let this pass.
*/
if (bdaddr_type_is_le(chan->src_type) &&
chan->scid != L2CAP_CID_ATT) {
err = -EINVAL;
break;
}
memset(&opts, 0, sizeof(opts));
opts.imtu = chan->imtu;
opts.omtu = chan->omtu;
opts.flush_to = chan->flush_to;
opts.mode = chan->mode;
opts.fcs = chan->fcs;
opts.max_tx = chan->max_tx;
opts.txwin_size = chan->tx_win;
len = min_t(unsigned int, len, sizeof(opts));
if (copy_to_user(optval, (char *) &opts, len))
err = -EFAULT;
break;
case L2CAP_LM:
switch (chan->sec_level) {
case BT_SECURITY_LOW:
opt = L2CAP_LM_AUTH;
break;
case BT_SECURITY_MEDIUM:
opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT;
break;
case BT_SECURITY_HIGH:
opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT |
L2CAP_LM_SECURE;
break;
case BT_SECURITY_FIPS:
opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT |
L2CAP_LM_SECURE | L2CAP_LM_FIPS;
break;
default:
opt = 0;
break;
}
if (test_bit(FLAG_ROLE_SWITCH, &chan->flags))
opt |= L2CAP_LM_MASTER;
if (test_bit(FLAG_FORCE_RELIABLE, &chan->flags))
opt |= L2CAP_LM_RELIABLE;
if (put_user(opt, (u32 __user *) optval))
err = -EFAULT;
break;
case L2CAP_CONNINFO:
if (sk->sk_state != BT_CONNECTED &&
!(sk->sk_state == BT_CONNECT2 &&
test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) {
err = -ENOTCONN;
break;
}
memset(&cinfo, 0, sizeof(cinfo));
cinfo.hci_handle = chan->conn->hcon->handle;
memcpy(cinfo.dev_class, chan->conn->hcon->dev_class, 3);
len = min_t(unsigned int, len, sizeof(cinfo));
if (copy_to_user(optval, (char *) &cinfo, len))
err = -EFAULT;
break;
default:
err = -ENOPROTOOPT;
break;
}
release_sock(sk);
return err;
}
static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen)
{
struct sock *sk = sock->sk;
struct bt_security sec;
int len, err = 0;
u32 opt;
BT_DBG("sk %p", sk);
if (level == SOL_L2CAP)
return l2cap_sock_setsockopt_old(sock, optname, optval, optlen);
if (level != SOL_BLUETOOTH)
return -ENOPROTOOPT;
lock_sock(sk);
switch (optname) {
case BT_SECURITY:
if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_STREAM
&& sk->sk_type != SOCK_RAW) {
err = -EINVAL;
break;
}
sec.level = BT_SECURITY_LOW;
len = min_t(unsigned int, sizeof(sec), optlen);
if (copy_from_user((char *) &sec, optval, len)) {
err = -EFAULT;
break;
}
if (sec.level < BT_SECURITY_LOW ||
sec.level > BT_SECURITY_HIGH) {
err = -EINVAL;
break;
}
l2cap_pi(sk)->sec_level = sec.level;
break;
case BT_DEFER_SETUP:
if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
err = -EINVAL;
break;
}
if (get_user(opt, (u32 __user *) optval)) {
err = -EFAULT;
break;
}
bt_sk(sk)->defer_setup = opt;
break;
case BT_FLUSHABLE:
if (get_user(opt, (u32 __user *) optval)) {
err = -EFAULT;
break;
}
if (opt > BT_FLUSHABLE_ON) {
err = -EINVAL;
break;
}
if (opt == BT_FLUSHABLE_OFF) {
struct l2cap_conn *conn = l2cap_pi(sk)->conn;
/* proceed futher only when we have l2cap_conn and
No Flush support in the LM */
if (!conn || !lmp_no_flush_capable(conn->hcon->hdev)) {
err = -EINVAL;
break;
}
}
l2cap_pi(sk)->flushable = opt;
break;
default:
err = -ENOPROTOOPT;
break;
}
release_sock(sk);
return err;
}
static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname,
char __user *optval, unsigned int optlen)
{
struct sock *sk = sock->sk;
struct l2cap_chan *chan = l2cap_pi(sk)->chan;
struct bt_security sec;
struct bt_power pwr;
struct l2cap_conn *conn;
int len, err = 0;
u32 opt;
BT_DBG("sk %p", sk);
if (level == SOL_L2CAP)
return l2cap_sock_setsockopt_old(sock, optname, optval, optlen);
if (level != SOL_BLUETOOTH)
return -ENOPROTOOPT;
lock_sock(sk);
switch (optname) {
case BT_SECURITY:
if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED &&
chan->chan_type != L2CAP_CHAN_FIXED &&
chan->chan_type != L2CAP_CHAN_RAW) {
err = -EINVAL;
break;
}
sec.level = BT_SECURITY_LOW;
len = min_t(unsigned int, sizeof(sec), optlen);
if (copy_from_user((char *) &sec, optval, len)) {
err = -EFAULT;
break;
}
if (sec.level < BT_SECURITY_LOW ||
sec.level > BT_SECURITY_HIGH) {
err = -EINVAL;
break;
}
chan->sec_level = sec.level;
if (!chan->conn)
break;
conn = chan->conn;
/*change security for LE channels */
if (chan->scid == L2CAP_CID_ATT) {
if (smp_conn_security(conn->hcon, sec.level))
break;
set_bit(FLAG_PENDING_SECURITY, &chan->flags);
sk->sk_state = BT_CONFIG;
chan->state = BT_CONFIG;
/* or for ACL link */
} else if ((sk->sk_state == BT_CONNECT2 &&
test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) ||
sk->sk_state == BT_CONNECTED) {
if (!l2cap_chan_check_security(chan, true))
set_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags);
else
sk->sk_state_change(sk);
} else {
err = -EINVAL;
}
break;
case BT_DEFER_SETUP:
if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
err = -EINVAL;
break;
}
if (get_user(opt, (u32 __user *) optval)) {
err = -EFAULT;
break;
}
if (opt) {
set_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags);
set_bit(FLAG_DEFER_SETUP, &chan->flags);
} else {
clear_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags);
clear_bit(FLAG_DEFER_SETUP, &chan->flags);
}
break;
case BT_FLUSHABLE:
if (get_user(opt, (u32 __user *) optval)) {
err = -EFAULT;
break;
}
if (opt > BT_FLUSHABLE_ON) {
err = -EINVAL;
break;
}
if (opt == BT_FLUSHABLE_OFF) {
conn = chan->conn;
/* proceed further only when we have l2cap_conn and
No Flush support in the LM */
if (!conn || !lmp_no_flush_capable(conn->hcon->hdev)) {
err = -EINVAL;
break;
}
}
if (opt)
set_bit(FLAG_FLUSHABLE, &chan->flags);
else
clear_bit(FLAG_FLUSHABLE, &chan->flags);
break;
case BT_POWER:
if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED &&
chan->chan_type != L2CAP_CHAN_RAW) {
err = -EINVAL;
break;
}
pwr.force_active = BT_POWER_FORCE_ACTIVE_ON;
len = min_t(unsigned int, sizeof(pwr), optlen);
if (copy_from_user((char *) &pwr, optval, len)) {
err = -EFAULT;
break;
}
if (pwr.force_active)
set_bit(FLAG_FORCE_ACTIVE, &chan->flags);
else
clear_bit(FLAG_FORCE_ACTIVE, &chan->flags);
break;
case BT_CHANNEL_POLICY:
if (get_user(opt, (u32 __user *) optval)) {
err = -EFAULT;
break;
}
if (opt > BT_CHANNEL_POLICY_AMP_PREFERRED) {
err = -EINVAL;
break;
}
if (chan->mode != L2CAP_MODE_ERTM &&
chan->mode != L2CAP_MODE_STREAMING) {
err = -EOPNOTSUPP;
break;
}
chan->chan_policy = (u8) opt;
if (sk->sk_state == BT_CONNECTED &&
chan->move_role == L2CAP_MOVE_ROLE_NONE)
l2cap_move_start(chan);
break;
case BT_SNDMTU:
if (!bdaddr_type_is_le(chan->src_type)) {
err = -EINVAL;
break;
}
/* Setting is not supported as it's the remote side that
* decides this.
*/
err = -EPERM;
break;
case BT_RCVMTU:
if (!bdaddr_type_is_le(chan->src_type)) {
err = -EINVAL;
break;
}
if (sk->sk_state == BT_CONNECTED) {
err = -EISCONN;
break;
}
if (get_user(opt, (u32 __user *) optval)) {
err = -EFAULT;
break;
}
chan->imtu = opt;
break;
default:
err = -ENOPROTOOPT;
break;
}
release_sock(sk);
return err;
}
static int l2cap_sock_getsockopt(struct socket *sock, int level, int optname,
char __user *optval, int __user *optlen)
{
struct sock *sk = sock->sk;
struct l2cap_chan *chan = l2cap_pi(sk)->chan;
struct bt_security sec;
struct bt_power pwr;
int len, err = 0;
BT_DBG("sk %p", sk);
if (level == SOL_L2CAP)
return l2cap_sock_getsockopt_old(sock, optname, optval, optlen);
if (level != SOL_BLUETOOTH)
return -ENOPROTOOPT;
if (get_user(len, optlen))
return -EFAULT;
lock_sock(sk);
switch (optname) {
case BT_SECURITY:
if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED &&
chan->chan_type != L2CAP_CHAN_FIXED &&
chan->chan_type != L2CAP_CHAN_RAW) {
err = -EINVAL;
break;
}
memset(&sec, 0, sizeof(sec));
if (chan->conn) {
sec.level = chan->conn->hcon->sec_level;
if (sk->sk_state == BT_CONNECTED)
sec.key_size = chan->conn->hcon->enc_key_size;
} else {
sec.level = chan->sec_level;
}
len = min_t(unsigned int, len, sizeof(sec));
if (copy_to_user(optval, (char *) &sec, len))
err = -EFAULT;
break;
case BT_DEFER_SETUP:
if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
err = -EINVAL;
break;
}
if (put_user(test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags),
(u32 __user *) optval))
err = -EFAULT;
break;
case BT_FLUSHABLE:
if (put_user(test_bit(FLAG_FLUSHABLE, &chan->flags),
(u32 __user *) optval))
err = -EFAULT;
break;
case BT_POWER:
if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_STREAM
&& sk->sk_type != SOCK_RAW) {
err = -EINVAL;
break;
}
pwr.force_active = test_bit(FLAG_FORCE_ACTIVE, &chan->flags);
len = min_t(unsigned int, len, sizeof(pwr));
if (copy_to_user(optval, (char *) &pwr, len))
err = -EFAULT;
break;
case BT_CHANNEL_POLICY:
if (put_user(chan->chan_policy, (u32 __user *) optval))
err = -EFAULT;
break;
case BT_SNDMTU:
if (!bdaddr_type_is_le(chan->src_type)) {
err = -EINVAL;
break;
}
if (sk->sk_state != BT_CONNECTED) {
err = -ENOTCONN;
break;
}
if (put_user(chan->omtu, (u16 __user *) optval))
err = -EFAULT;
break;
case BT_RCVMTU:
if (!bdaddr_type_is_le(chan->src_type)) {
err = -EINVAL;
break;
}
if (put_user(chan->imtu, (u16 __user *) optval))
err = -EFAULT;
break;
default:
err = -ENOPROTOOPT;
break;
}
release_sock(sk);
return err;
}
static int l2cap_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen)
{
struct sock *sk = sock->sk;
struct bt_security sec;
struct bt_power pwr;
int len, err = 0;
BT_DBG("sk %p", sk);
if (level == SOL_L2CAP)
return l2cap_sock_getsockopt_old(sock, optname, optval, optlen);
if (level != SOL_BLUETOOTH)
return -ENOPROTOOPT;
if (get_user(len, optlen))
return -EFAULT;
lock_sock(sk);
switch (optname) {
case BT_SECURITY:
if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_STREAM
&& sk->sk_type != SOCK_RAW) {
err = -EINVAL;
break;
}
memset(&sec, 0, sizeof(sec));
sec.level = l2cap_pi(sk)->sec_level;
if (sk->sk_state == BT_CONNECTED) {
sec.key_size = l2cap_pi(sk)->conn->hcon->enc_key_size;
sec.level = l2cap_pi(sk)->conn->hcon->sec_level;
}
len = min_t(unsigned int, len, sizeof(sec));
if (copy_to_user(optval, (char *) &sec, len))
err = -EFAULT;
break;
case BT_DEFER_SETUP:
if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
err = -EINVAL;
break;
}
if (put_user(bt_sk(sk)->defer_setup, (u32 __user *) optval))
err = -EFAULT;
break;
case BT_POWER:
if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_STREAM
&& sk->sk_type != SOCK_RAW) {
err = -EINVAL;
break;
}
pwr.force_active = l2cap_pi(sk)->force_active;
len = min_t(unsigned int, len, sizeof(pwr));
if (copy_to_user(optval, (char *) &pwr, len))
err = -EFAULT;
break;
case BT_AMP_POLICY:
if (put_user(l2cap_pi(sk)->amp_pref, (u32 __user *) optval))
err = -EFAULT;
break;
case BT_LE_PARAMS:
if (l2cap_pi(sk)->scid != L2CAP_CID_LE_DATA) {
err = -EINVAL;
break;
}
if (copy_to_user(optval, (char *) &bt_sk(sk)->le_params,
sizeof(bt_sk(sk)->le_params)))
err = -EFAULT;
break;
default:
err = -ENOPROTOOPT;
break;
}
release_sock(sk);
return err;
}
static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen)
{
struct sock *sk = sock->sk;
struct bt_security sec;
struct bt_power pwr;
struct bt_le_params le_params;
struct l2cap_conn *conn;
int len, err = 0;
u32 opt;
BT_DBG("sk %p", sk);
if (level == SOL_L2CAP)
return l2cap_sock_setsockopt_old(sock, optname, optval, optlen);
if (level != SOL_BLUETOOTH)
return -ENOPROTOOPT;
lock_sock(sk);
switch (optname) {
case BT_SECURITY:
if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_STREAM
&& sk->sk_type != SOCK_RAW) {
err = -EINVAL;
break;
}
sec.level = BT_SECURITY_LOW;
len = min_t(unsigned int, sizeof(sec), optlen);
if (copy_from_user((char *) &sec, optval, len)) {
err = -EFAULT;
break;
}
if (sec.level < BT_SECURITY_LOW ||
sec.level > BT_SECURITY_HIGH) {
err = -EINVAL;
break;
}
l2cap_pi(sk)->sec_level = sec.level;
conn = l2cap_pi(sk)->conn;
if (conn && l2cap_pi(sk)->scid == L2CAP_CID_LE_DATA) {
if (!conn->hcon->out) {
err = -EINVAL;
break;
}
if (smp_conn_security(conn, sec.level))
break;
err = 0;
sk->sk_state = BT_CONFIG;
}
break;
case BT_DEFER_SETUP:
if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
err = -EINVAL;
break;
}
if (get_user(opt, (u32 __user *) optval)) {
err = -EFAULT;
break;
}
bt_sk(sk)->defer_setup = opt;
break;
case BT_POWER:
if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_STREAM
&& sk->sk_type != SOCK_RAW) {
err = -EINVAL;
break;
}
pwr.force_active = 1;
len = min_t(unsigned int, sizeof(pwr), optlen);
if (copy_from_user((char *) &pwr, optval, len)) {
err = -EFAULT;
break;
}
l2cap_pi(sk)->force_active = pwr.force_active;
break;
case BT_AMP_POLICY:
if (get_user(opt, (u32 __user *) optval)) {
err = -EFAULT;
break;
}
if ((opt > BT_AMP_POLICY_PREFER_AMP) ||
((l2cap_pi(sk)->mode != L2CAP_MODE_ERTM) &&
(l2cap_pi(sk)->mode != L2CAP_MODE_STREAMING))) {
err = -EINVAL;
break;
}
l2cap_pi(sk)->amp_pref = (u8) opt;
BT_DBG("BT_AMP_POLICY now %d", opt);
if ((sk->sk_state == BT_CONNECTED) &&
(l2cap_pi(sk)->amp_move_role == L2CAP_AMP_MOVE_NONE))
l2cap_amp_move_init(sk);
break;
case BT_FLUSHABLE:
if (get_user(opt, (u32 __user *) optval)) {
err = -EFAULT;
break;
}
l2cap_pi(sk)->flushable = opt;
break;
case BT_LE_PARAMS:
if (l2cap_pi(sk)->scid != L2CAP_CID_LE_DATA) {
err = -EINVAL;
break;
}
if (copy_from_user((char *) &le_params, optval,
sizeof(struct bt_le_params))) {
err = -EFAULT;
break;
}
conn = l2cap_pi(sk)->conn;
if (!conn || !conn->hcon ||
l2cap_pi(sk)->scid != L2CAP_CID_LE_DATA) {
memcpy(&bt_sk(sk)->le_params, &le_params,
sizeof(le_params));
break;
}
if (!conn->hcon->out ||
!l2cap_sock_le_params_valid(&le_params)) {
err = -EINVAL;
break;
}
memcpy(&bt_sk(sk)->le_params, &le_params, sizeof(le_params));
hci_le_conn_update(conn->hcon,
le_params.interval_min,
le_params.interval_max,
le_params.latency,
le_params.supervision_timeout);
break;
default:
err = -ENOPROTOOPT;
break;
}
release_sock(sk);
return err;
}
static int l2cap_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen)
{
struct sock *sk = sock->sk;
struct bt_security sec;
struct bt_power pwr;
int len, err = 0;
BT_DBG("sk %p", sk);
if (level == SOL_L2CAP)
return l2cap_sock_getsockopt_old(sock, optname, optval, optlen);
if (level != SOL_BLUETOOTH)
return -ENOPROTOOPT;
if (get_user(len, optlen))
return -EFAULT;
lock_sock(sk);
switch (optname) {
case BT_SECURITY:
if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_STREAM
&& sk->sk_type != SOCK_RAW) {
err = -EINVAL;
break;
}
sec.level = l2cap_pi(sk)->sec_level;
len = min_t(unsigned int, len, sizeof(sec));
if (copy_to_user(optval, (char *) &sec, len))
err = -EFAULT;
break;
case BT_DEFER_SETUP:
if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
err = -EINVAL;
break;
}
if (put_user(bt_sk(sk)->defer_setup, (u32 __user *) optval))
err = -EFAULT;
break;
case BT_FLUSHABLE:
if (put_user(l2cap_pi(sk)->flushable, (u32 __user *) optval))
err = -EFAULT;
break;
case BT_POWER:
if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_STREAM
&& sk->sk_type != SOCK_RAW) {
err = -EINVAL;
break;
}
pwr.force_active = l2cap_pi(sk)->force_active;
len = min_t(unsigned int, len, sizeof(pwr));
if (copy_to_user(optval, (char *) &pwr, len))
err = -EFAULT;
break;
default:
err = -ENOPROTOOPT;
break;
}
release_sock(sk);
return err;
}
