#define BT_DBG(D...)
#endif
-#define VERSION "2.4"
+#define VERSION "2.7"
static struct proto_ops l2cap_sock_ops;
-struct bt_sock_list l2cap_sk_list = {
+static struct bt_sock_list l2cap_sk_list = {
.lock = RW_LOCK_UNLOCKED
};
static void l2cap_sock_close(struct sock *sk);
static void l2cap_sock_kill(struct sock *sk);
-static int l2cap_send_req(struct l2cap_conn *conn, u8 code, u16 len, void *data);
-static int l2cap_send_rsp(struct l2cap_conn *conn, u8 ident, u8 code, u16 len, void *data);
+static struct sk_buff *l2cap_build_cmd(struct l2cap_conn *conn,
+ u8 code, u8 ident, u16 dlen, void *data);
/* ---- L2CAP timers ---- */
static void l2cap_sock_timeout(unsigned long arg)
conn->dst = &hcon->dst;
spin_lock_init(&conn->lock);
- conn->chan_list.lock = RW_LOCK_UNLOCKED;
+ rwlock_init(&conn->chan_list.lock);
BT_DBG("hcon %p conn %p", hcon, conn);
return conn;
write_unlock(&l->lock);
}
+static inline u8 l2cap_get_ident(struct l2cap_conn *conn)
+{
+ u8 id;
+
+ /* Get next available identificator.
+ * 1 - 128 are used by kernel.
+ * 129 - 199 are reserved.
+ * 200 - 254 are used by utilities like l2ping, etc.
+ */
+
+ spin_lock(&conn->lock);
+
+ if (++conn->tx_ident > 128)
+ conn->tx_ident = 1;
+
+ id = conn->tx_ident;
+
+ spin_unlock(&conn->lock);
+
+ return id;
+}
+
+static inline int l2cap_send_cmd(struct l2cap_conn *conn, u8 ident, u8 code, u16 len, void *data)
+{
+ struct sk_buff *skb = l2cap_build_cmd(conn, code, ident, len, data);
+
+ BT_DBG("code 0x%2.2x", code);
+
+ if (!skb)
+ return -ENOMEM;
+
+ return hci_send_acl(conn->hcon, skb, 0);
+}
+
/* ---- Socket interface ---- */
static struct sock *__l2cap_get_sock_by_addr(u16 psm, bdaddr_t *src)
{
req.dcid = __cpu_to_le16(l2cap_pi(sk)->dcid);
req.scid = __cpu_to_le16(l2cap_pi(sk)->scid);
- l2cap_send_req(conn, L2CAP_DISCONN_REQ, sizeof(req), &req);
+ l2cap_send_cmd(conn, l2cap_get_ident(conn),
+ L2CAP_DISCONN_REQ, sizeof(req), &req);
} else {
l2cap_chan_del(sk, reason);
}
sock->state = SS_UNCONNECTED;
- if (sock->type != SOCK_SEQPACKET && sock->type != SOCK_DGRAM && sock->type != SOCK_RAW)
+ if (sock->type != SOCK_SEQPACKET &&
+ sock->type != SOCK_DGRAM && sock->type != SOCK_RAW)
return -ESOCKTNOSUPPORT;
if (sock->type == SOCK_RAW && !capable(CAP_NET_RAW))
if (hcon->state == BT_CONNECTED) {
if (sk->sk_type == SOCK_SEQPACKET) {
struct l2cap_conn_req req;
+ l2cap_pi(sk)->ident = l2cap_get_ident(conn);
req.scid = __cpu_to_le16(l2cap_pi(sk)->scid);
req.psm = l2cap_pi(sk)->psm;
- l2cap_send_req(conn, L2CAP_CONN_REQ, sizeof(req), &req);
+ l2cap_send_cmd(conn, l2cap_pi(sk)->ident,
+ L2CAP_CONN_REQ, sizeof(req), &req);
} else {
l2cap_sock_clear_timer(sk);
sk->sk_state = BT_CONNECTED;
return -EOPNOTSUPP;
/* Check outgoing MTU */
- if (len > l2cap_pi(sk)->omtu)
+ if (sk->sk_type != SOCK_RAW && len > l2cap_pi(sk)->omtu)
return -EINVAL;
lock_sock(sk);
switch (optname) {
case L2CAP_OPTIONS:
len = min_t(unsigned int, sizeof(opts), optlen);
- if (copy_from_user((char *)&opts, optval, len)) {
+ if (copy_from_user((char *) &opts, optval, len)) {
err = -EFAULT;
break;
}
break;
case L2CAP_LM:
- if (get_user(opt, (u32 __user *)optval)) {
+ if (get_user(opt, (u32 __user *) optval)) {
err = -EFAULT;
break;
}
struct sock *sk = sock->sk;
struct l2cap_options opts;
struct l2cap_conninfo cinfo;
- int len, err = 0;
+ int len, err = 0;
+
+ BT_DBG("sk %p", sk);
if (get_user(len, optlen))
return -EFAULT;
opts.imtu = l2cap_pi(sk)->imtu;
opts.omtu = l2cap_pi(sk)->omtu;
opts.flush_to = l2cap_pi(sk)->flush_to;
+ opts.mode = 0x00;
len = min_t(unsigned int, len, sizeof(opts));
- if (copy_to_user(optval, (char *)&opts, len))
+ if (copy_to_user(optval, (char *) &opts, len))
err = -EFAULT;
break;
case L2CAP_LM:
- if (put_user(l2cap_pi(sk)->link_mode, (u32 __user *)optval))
+ if (put_user(l2cap_pi(sk)->link_mode, (u32 __user *) optval))
err = -EFAULT;
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))
+ if (copy_to_user(optval, (char *) &cinfo, len))
err = -EFAULT;
break;
return s;
}
+static struct sock *__l2cap_get_chan_by_ident(struct l2cap_chan_list *l, u8 ident)
+{
+ struct sock *s;
+ for (s = l->head; s; s = l2cap_pi(s)->next_c) {
+ if (l2cap_pi(s)->ident == ident)
+ break;
+ }
+ return s;
+}
+
+static inline struct sock *l2cap_get_chan_by_ident(struct l2cap_chan_list *l, u8 ident)
+{
+ struct sock *s;
+ read_lock(&l->lock);
+ s = __l2cap_get_chan_by_ident(l, ident);
+ if (s) bh_lock_sock(s);
+ read_unlock(&l->lock);
+ return s;
+}
+
static u16 l2cap_alloc_cid(struct l2cap_chan_list *l)
{
u16 cid = 0x0040;
if (err)
sk->sk_err = err;
- if (parent)
+ if (parent) {
+ bt_accept_unlink(sk);
parent->sk_data_ready(parent, 0);
- else
+ } else
sk->sk_state_change(sk);
}
sk->sk_state_change(sk);
} else if (sk->sk_state == BT_CONNECT) {
struct l2cap_conn_req req;
+ l2cap_pi(sk)->ident = l2cap_get_ident(conn);
req.scid = __cpu_to_le16(l2cap_pi(sk)->scid);
req.psm = l2cap_pi(sk)->psm;
- l2cap_send_req(conn, L2CAP_CONN_REQ, sizeof(req), &req);
+ l2cap_send_cmd(conn, l2cap_pi(sk)->ident, L2CAP_CONN_REQ, sizeof(req), &req);
}
bh_unlock_sock(sk);
read_unlock(&l->lock);
}
+/* Notify sockets that we cannot guaranty reliability anymore */
+static void l2cap_conn_unreliable(struct l2cap_conn *conn, int err)
+{
+ struct l2cap_chan_list *l = &conn->chan_list;
+ struct sock *sk;
+
+ BT_DBG("conn %p", conn);
+
+ read_lock(&l->lock);
+ for (sk = l->head; sk; sk = l2cap_pi(sk)->next_c) {
+ if (l2cap_pi(sk)->link_mode & L2CAP_LM_RELIABLE)
+ sk->sk_err = err;
+ }
+ read_unlock(&l->lock);
+}
+
static void l2cap_chan_ready(struct sock *sk)
{
struct sock *parent = bt_sk(sk)->parent;
}
/* ---- L2CAP signalling commands ---- */
-static inline u8 l2cap_get_ident(struct l2cap_conn *conn)
-{
- u8 id;
-
- /* Get next available identificator.
- * 1 - 199 are used by kernel.
- * 200 - 254 are used by utilities like l2ping, etc
- */
-
- spin_lock(&conn->lock);
-
- if (++conn->tx_ident > 199)
- conn->tx_ident = 1;
-
- id = conn->tx_ident;
-
- spin_unlock(&conn->lock);
-
- return id;
-}
-
static struct sk_buff *l2cap_build_cmd(struct l2cap_conn *conn,
u8 code, u8 ident, u16 dlen, void *data)
{
return NULL;
}
-static int l2cap_send_req(struct l2cap_conn *conn, u8 code, u16 len, void *data)
-{
- u8 ident = l2cap_get_ident(conn);
- struct sk_buff *skb = l2cap_build_cmd(conn, code, ident, len, data);
-
- BT_DBG("code 0x%2.2x", code);
-
- if (!skb)
- return -ENOMEM;
- return hci_send_acl(conn->hcon, skb, 0);
-}
-
-static int l2cap_send_rsp(struct l2cap_conn *conn, u8 ident, u8 code, u16 len, void *data)
-{
- struct sk_buff *skb = l2cap_build_cmd(conn, code, ident, len, data);
-
- BT_DBG("code 0x%2.2x", code);
-
- if (!skb)
- return -ENOMEM;
- return hci_send_acl(conn->hcon, skb, 0);
-}
-
static inline int l2cap_get_conf_opt(void **ptr, int *type, int *olen, unsigned long *val)
{
struct l2cap_conf_opt *opt = *ptr;
if (pi->imtu != L2CAP_DEFAULT_MTU)
l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, pi->imtu);
- /* FIXME. Need actual value of the flush timeout */
+ /* FIXME: Need actual value of the flush timeout */
//if (flush_to != L2CAP_DEFAULT_FLUSH_TO)
// l2cap_add_conf_opt(&ptr, L2CAP_CONF_FLUSH_TO, 2, pi->flush_to);
status = L2CAP_CS_AUTHEN_PEND;
sk->sk_state = BT_CONNECT2;
l2cap_pi(sk)->ident = cmd->ident;
-
- if (l2cap_pi(sk)->link_mode & L2CAP_LM_ENCRYPT) {
+
+ if ((l2cap_pi(sk)->link_mode & L2CAP_LM_ENCRYPT) ||
+ (l2cap_pi(sk)->link_mode & L2CAP_LM_SECURE)) {
if (!hci_conn_encrypt(conn->hcon))
goto done;
} else if (l2cap_pi(sk)->link_mode & L2CAP_LM_AUTH) {
rsp.dcid = __cpu_to_le16(dcid);
rsp.result = __cpu_to_le16(result);
rsp.status = __cpu_to_le16(status);
- l2cap_send_rsp(conn, cmd->ident, L2CAP_CONN_RSP, sizeof(rsp), &rsp);
+ l2cap_send_cmd(conn, cmd->ident, L2CAP_CONN_RSP, sizeof(rsp), &rsp);
return 0;
}
BT_DBG("dcid 0x%4.4x scid 0x%4.4x result 0x%2.2x status 0x%2.2x", dcid, scid, result, status);
- if (!(sk = l2cap_get_chan_by_scid(&conn->chan_list, scid)))
- return 0;
+ if (scid) {
+ if (!(sk = l2cap_get_chan_by_scid(&conn->chan_list, scid)))
+ return 0;
+ } else {
+ if (!(sk = l2cap_get_chan_by_ident(&conn->chan_list, cmd->ident)))
+ return 0;
+ }
switch (result) {
case L2CAP_CR_SUCCESS:
sk->sk_state = BT_CONFIG;
+ l2cap_pi(sk)->ident = 0;
l2cap_pi(sk)->dcid = dcid;
l2cap_pi(sk)->conf_state |= L2CAP_CONF_REQ_SENT;
- l2cap_send_req(conn, L2CAP_CONF_REQ, l2cap_build_conf_req(sk, req), req);
+ l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ,
+ l2cap_build_conf_req(sk, req), req);
break;
case L2CAP_CR_PEND:
if (flags & 0x0001) {
/* Incomplete config. Send empty response. */
- l2cap_send_rsp(conn, cmd->ident, L2CAP_CONF_RSP, l2cap_build_conf_rsp(sk, rsp, NULL), rsp);
+ l2cap_send_cmd(conn, cmd->ident, L2CAP_CONF_RSP,
+ l2cap_build_conf_rsp(sk, rsp, NULL), rsp);
goto unlock;
}
/* Complete config. */
- l2cap_send_rsp(conn, cmd->ident, L2CAP_CONF_RSP, l2cap_build_conf_rsp(sk, rsp, &result), rsp);
+ l2cap_send_cmd(conn, cmd->ident, L2CAP_CONF_RSP,
+ l2cap_build_conf_rsp(sk, rsp, &result), rsp);
if (result)
goto unlock;
l2cap_chan_ready(sk);
} else if (!(l2cap_pi(sk)->conf_state & L2CAP_CONF_REQ_SENT)) {
u8 req[64];
- l2cap_send_req(conn, L2CAP_CONF_REQ, l2cap_build_conf_req(sk, req), req);
+ l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ,
+ l2cap_build_conf_req(sk, req), req);
}
unlock:
* resend config request that we sent earlier. It is
* stupid, but it helps qualification testing which
* expects at least some response from us. */
- l2cap_send_req(conn, L2CAP_CONF_REQ,
- l2cap_build_conf_req(sk, req), req);
+ l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ,
+ l2cap_build_conf_req(sk, req), req);
goto done;
}
struct l2cap_disconn_req req;
req.dcid = __cpu_to_le16(l2cap_pi(sk)->dcid);
req.scid = __cpu_to_le16(l2cap_pi(sk)->scid);
- l2cap_send_req(conn, L2CAP_DISCONN_REQ, sizeof(req), &req);
+ l2cap_send_cmd(conn, l2cap_get_ident(conn),
+ L2CAP_DISCONN_REQ, sizeof(req), &req);
}
goto done;
}
rsp.dcid = __cpu_to_le16(l2cap_pi(sk)->scid);
rsp.scid = __cpu_to_le16(l2cap_pi(sk)->dcid);
- l2cap_send_rsp(conn, cmd->ident, L2CAP_DISCONN_RSP, sizeof(rsp), &rsp);
+ l2cap_send_cmd(conn, cmd->ident, L2CAP_DISCONN_RSP, sizeof(rsp), &rsp);
sk->sk_shutdown = SHUTDOWN_MASK;
rsp.type = __cpu_to_le16(type);
rsp.result = __cpu_to_le16(L2CAP_IR_NOTSUPP);
- l2cap_send_rsp(conn, cmd->ident, L2CAP_INFO_RSP, sizeof(rsp), &rsp);
+ l2cap_send_cmd(conn, cmd->ident, L2CAP_INFO_RSP, sizeof(rsp), &rsp);
return 0;
}
break;
case L2CAP_ECHO_REQ:
- l2cap_send_rsp(conn, cmd.ident, L2CAP_ECHO_RSP, cmd.len, data);
+ l2cap_send_cmd(conn, cmd.ident, L2CAP_ECHO_RSP, cmd.len, data);
break;
case L2CAP_ECHO_RSP:
/* FIXME: Map err to a valid reason */
rej.reason = __cpu_to_le16(0);
- l2cap_send_rsp(conn, cmd.ident, L2CAP_COMMAND_REJ, sizeof(rej), &rej);
+ l2cap_send_cmd(conn, cmd.ident, L2CAP_COMMAND_REJ, sizeof(rej), &rej);
}
data += cmd.len;
bh_lock_sock(sk);
if (sk->sk_state != BT_CONNECT2 ||
- (l2cap_pi(sk)->link_mode & L2CAP_LM_ENCRYPT)) {
+ (l2cap_pi(sk)->link_mode & L2CAP_LM_ENCRYPT) ||
+ (l2cap_pi(sk)->link_mode & L2CAP_LM_SECURE)) {
bh_unlock_sock(sk);
continue;
}
rsp.dcid = __cpu_to_le16(l2cap_pi(sk)->scid);
rsp.result = __cpu_to_le16(result);
rsp.status = __cpu_to_le16(0);
- l2cap_send_rsp(conn, l2cap_pi(sk)->ident, L2CAP_CONN_RSP, sizeof(rsp), &rsp);
+ l2cap_send_cmd(conn, l2cap_pi(sk)->ident,
+ L2CAP_CONN_RSP, sizeof(rsp), &rsp);
bh_unlock_sock(sk);
}
rsp.dcid = __cpu_to_le16(l2cap_pi(sk)->scid);
rsp.result = __cpu_to_le16(result);
rsp.status = __cpu_to_le16(0);
- l2cap_send_rsp(conn, l2cap_pi(sk)->ident, L2CAP_CONN_RSP, sizeof(rsp), &rsp);
+ l2cap_send_cmd(conn, l2cap_pi(sk)->ident,
+ L2CAP_CONN_RSP, sizeof(rsp), &rsp);
+
+ if (l2cap_pi(sk)->link_mode & L2CAP_LM_SECURE)
+ hci_conn_change_link_key(hcon);
bh_unlock_sock(sk);
}
kfree_skb(conn->rx_skb);
conn->rx_skb = NULL;
conn->rx_len = 0;
+ l2cap_conn_unreliable(conn, ECOMM);
}
if (skb->len < 2) {
BT_ERR("Frame is too short (len %d)", skb->len);
+ l2cap_conn_unreliable(conn, ECOMM);
goto drop;
}
if (skb->len > len) {
BT_ERR("Frame is too long (len %d, expected len %d)",
skb->len, len);
+ l2cap_conn_unreliable(conn, ECOMM);
goto drop;
}
if (!conn->rx_len) {
BT_ERR("Unexpected continuation frame (len %d)", skb->len);
+ l2cap_conn_unreliable(conn, ECOMM);
goto drop;
}
kfree_skb(conn->rx_skb);
conn->rx_skb = NULL;
conn->rx_len = 0;
+ l2cap_conn_unreliable(conn, ECOMM);
goto drop;
}
void l2cap_load(void)
{
/* Dummy function to trigger automatic L2CAP module loading by
- * other modules that use L2CAP sockets but don not use any othe
+ * other modules that use L2CAP sockets but don't use any other
* symbols from it. */
return;
}
git://git.onelab.eu / linux-2.6.git / blobdiff