#include <linux/skbuff.h>
#include <linux/list.h>
#include <linux/device.h>
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
#include <linux/uaccess.h>
+#include <linux/crc16.h>
#include <net/sock.h>
#include <asm/system.h>
#define VERSION "2.14"
+#ifdef CONFIG_BT_L2CAP_EXT_FEATURES
+static int enable_ertm = 1;
+#else
static int enable_ertm = 0;
+#endif
+static int max_transmit = L2CAP_DEFAULT_MAX_TX;
+static int tx_window = L2CAP_DEFAULT_TX_WINDOW;
static u32 l2cap_feat_mask = L2CAP_FEAT_FIXED_CHAN;
static u8 l2cap_fixed_chan[8] = { 0x02, };
l2cap_pi(sk)->conn = conn;
- if (sk->sk_type == SOCK_SEQPACKET) {
+ if (sk->sk_type == SOCK_SEQPACKET || sk->sk_type == SOCK_STREAM) {
/* Alloc CID for connection-oriented socket */
l2cap_pi(sk)->scid = l2cap_alloc_cid(l);
} else if (sk->sk_type == SOCK_DGRAM) {
return hci_send_acl(conn->hcon, skb, 0);
}
+static inline int l2cap_send_sframe(struct l2cap_pinfo *pi, u16 control)
+{
+ struct sk_buff *skb;
+ struct l2cap_hdr *lh;
+ struct l2cap_conn *conn = pi->conn;
+ int count, hlen = L2CAP_HDR_SIZE + 2;
+
+ if (pi->fcs == L2CAP_FCS_CRC16)
+ hlen += 2;
+
+ BT_DBG("pi %p, control 0x%2.2x", pi, control);
+
+ count = min_t(unsigned int, conn->mtu, hlen);
+ control |= L2CAP_CTRL_FRAME_TYPE;
+
+ if (pi->conn_state & L2CAP_CONN_SEND_FBIT) {
+ control |= L2CAP_CTRL_FINAL;
+ pi->conn_state &= ~L2CAP_CONN_SEND_FBIT;
+ }
+
+ if (pi->conn_state & L2CAP_CONN_SEND_PBIT) {
+ control |= L2CAP_CTRL_POLL;
+ pi->conn_state &= ~L2CAP_CONN_SEND_PBIT;
+ }
+
+ skb = bt_skb_alloc(count, GFP_ATOMIC);
+ if (!skb)
+ return -ENOMEM;
+
+ lh = (struct l2cap_hdr *) skb_put(skb, L2CAP_HDR_SIZE);
+ lh->len = cpu_to_le16(hlen - L2CAP_HDR_SIZE);
+ lh->cid = cpu_to_le16(pi->dcid);
+ put_unaligned_le16(control, skb_put(skb, 2));
+
+ if (pi->fcs == L2CAP_FCS_CRC16) {
+ u16 fcs = crc16(0, (u8 *)lh, count - 2);
+ put_unaligned_le16(fcs, skb_put(skb, 2));
+ }
+
+ return hci_send_acl(pi->conn->hcon, skb, 0);
+}
+
+static inline int l2cap_send_rr_or_rnr(struct l2cap_pinfo *pi, u16 control)
+{
+ if (pi->conn_state & L2CAP_CONN_LOCAL_BUSY)
+ control |= L2CAP_SUPER_RCV_NOT_READY;
+ else
+ control |= L2CAP_SUPER_RCV_READY;
+
+ control |= pi->buffer_seq << L2CAP_CTRL_REQSEQ_SHIFT;
+
+ return l2cap_send_sframe(pi, control);
+}
+
static void l2cap_do_start(struct sock *sk)
{
struct l2cap_conn *conn = l2cap_pi(sk)->conn;
}
}
+static void l2cap_send_disconn_req(struct l2cap_conn *conn, struct sock *sk)
+{
+ 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_cmd(conn, l2cap_get_ident(conn),
+ L2CAP_DISCONN_REQ, sizeof(req), &req);
+}
+
/* ---- L2CAP connections ---- */
static void l2cap_conn_start(struct l2cap_conn *conn)
{
for (sk = l->head; sk; sk = l2cap_pi(sk)->next_c) {
bh_lock_sock(sk);
- if (sk->sk_type != SOCK_SEQPACKET) {
+ if (sk->sk_type != SOCK_SEQPACKET &&
+ sk->sk_type != SOCK_STREAM) {
bh_unlock_sock(sk);
continue;
}
for (sk = l->head; sk; sk = l2cap_pi(sk)->next_c) {
bh_lock_sock(sk);
- if (sk->sk_type != SOCK_SEQPACKET) {
+ if (sk->sk_type != SOCK_SEQPACKET &&
+ sk->sk_type != SOCK_STREAM) {
l2cap_sock_clear_timer(sk);
sk->sk_state = BT_CONNECTED;
sk->sk_state_change(sk);
conn->feat_mask = 0;
- setup_timer(&conn->info_timer, l2cap_info_timeout,
- (unsigned long) conn);
-
spin_lock_init(&conn->lock);
rwlock_init(&conn->chan_list.lock);
+ setup_timer(&conn->info_timer, l2cap_info_timeout,
+ (unsigned long) conn);
+
conn->disc_reason = 0x13;
return conn;
case BT_CONNECTED:
case BT_CONFIG:
- if (sk->sk_type == SOCK_SEQPACKET) {
+ if (sk->sk_type == SOCK_SEQPACKET ||
+ sk->sk_type == SOCK_STREAM) {
struct l2cap_conn *conn = l2cap_pi(sk)->conn;
- struct l2cap_disconn_req req;
sk->sk_state = BT_DISCONN;
l2cap_sock_set_timer(sk, sk->sk_sndtimeo);
-
- req.dcid = cpu_to_le16(l2cap_pi(sk)->dcid);
- req.scid = cpu_to_le16(l2cap_pi(sk)->scid);
- l2cap_send_cmd(conn, l2cap_get_ident(conn),
- L2CAP_DISCONN_REQ, sizeof(req), &req);
+ l2cap_send_disconn_req(conn, sk);
} else
l2cap_chan_del(sk, reason);
break;
case BT_CONNECT2:
- if (sk->sk_type == SOCK_SEQPACKET) {
+ if (sk->sk_type == SOCK_SEQPACKET ||
+ sk->sk_type == SOCK_STREAM) {
struct l2cap_conn *conn = l2cap_pi(sk)->conn;
struct l2cap_conn_rsp rsp;
__u16 result;
pi->imtu = l2cap_pi(parent)->imtu;
pi->omtu = l2cap_pi(parent)->omtu;
+ 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;
} else {
pi->imtu = L2CAP_DEFAULT_MTU;
pi->omtu = 0;
+ if (enable_ertm && sk->sk_type == SOCK_STREAM)
+ pi->mode = L2CAP_MODE_ERTM;
+ else
+ pi->mode = L2CAP_MODE_BASIC;
+ pi->max_tx = max_transmit;
+ pi->fcs = L2CAP_FCS_CRC16;
+ pi->tx_win = tx_window;
pi->sec_level = BT_SECURITY_LOW;
pi->role_switch = 0;
pi->force_reliable = 0;
/* Default config options */
pi->conf_len = 0;
pi->flush_to = L2CAP_DEFAULT_FLUSH_TO;
+ skb_queue_head_init(TX_QUEUE(sk));
+ skb_queue_head_init(SREJ_QUEUE(sk));
+ INIT_LIST_HEAD(SREJ_LIST(sk));
}
static struct proto l2cap_proto = {
return sk;
}
-static int l2cap_sock_create(struct net *net, struct socket *sock, int protocol)
+static int l2cap_sock_create(struct net *net, struct socket *sock, int protocol,
+ int kern)
{
struct sock *sk;
sock->state = SS_UNCONNECTED;
- if (sock->type != SOCK_SEQPACKET &&
+ if (sock->type != SOCK_SEQPACKET && sock->type != SOCK_STREAM &&
sock->type != SOCK_DGRAM && sock->type != SOCK_RAW)
return -ESOCKTNOSUPPORT;
- if (sock->type == SOCK_RAW && !capable(CAP_NET_RAW))
+ if (sock->type == SOCK_RAW && !kern && !capable(CAP_NET_RAW))
return -EPERM;
sock->ops = &l2cap_sock_ops;
l2cap_sock_set_timer(sk, sk->sk_sndtimeo);
if (hcon->state == BT_CONNECTED) {
- if (sk->sk_type != SOCK_SEQPACKET) {
+ if (sk->sk_type != SOCK_SEQPACKET &&
+ sk->sk_type != SOCK_STREAM) {
l2cap_sock_clear_timer(sk);
sk->sk_state = BT_CONNECTED;
} else
BT_DBG("sk %p", sk);
- if (!addr || addr->sa_family != AF_BLUETOOTH)
+ if (!addr || alen < sizeof(addr->sa_family) ||
+ addr->sa_family != AF_BLUETOOTH)
return -EINVAL;
memset(&la, 0, sizeof(la));
lock_sock(sk);
- if (sk->sk_type == SOCK_SEQPACKET && !la.l2_psm) {
+ if ((sk->sk_type == SOCK_SEQPACKET || sk->sk_type == SOCK_STREAM)
+ && !la.l2_psm) {
err = -EINVAL;
goto done;
}
+ switch (l2cap_pi(sk)->mode) {
+ case L2CAP_MODE_BASIC:
+ break;
+ case L2CAP_MODE_ERTM:
+ case L2CAP_MODE_STREAMING:
+ if (enable_ertm)
+ break;
+ /* fall through */
+ default:
+ err = -ENOTSUPP;
+ goto done;
+ }
+
switch (sk->sk_state) {
case BT_CONNECT:
case BT_CONNECT2:
lock_sock(sk);
- if (sk->sk_state != BT_BOUND || sock->type != SOCK_SEQPACKET) {
+ if ((sock->type != SOCK_SEQPACKET && sock->type != SOCK_STREAM)
+ || sk->sk_state != BT_BOUND) {
err = -EBADFD;
goto done;
}
+ switch (l2cap_pi(sk)->mode) {
+ case L2CAP_MODE_BASIC:
+ break;
+ case L2CAP_MODE_ERTM:
+ case L2CAP_MODE_STREAMING:
+ if (enable_ertm)
+ break;
+ /* fall through */
+ default:
+ err = -ENOTSUPP;
+ goto done;
+ }
+
if (!l2cap_pi(sk)->psm) {
bdaddr_t *src = &bt_sk(sk)->src;
u16 psm;
BT_DBG("sk %p timeo %ld", sk, timeo);
/* Wait for an incoming connection. (wake-one). */
- add_wait_queue_exclusive(sk->sk_sleep, &wait);
+ add_wait_queue_exclusive(sk_sleep(sk), &wait);
while (!(nsk = bt_accept_dequeue(sk, newsock))) {
set_current_state(TASK_INTERRUPTIBLE);
if (!timeo) {
}
}
set_current_state(TASK_RUNNING);
- remove_wait_queue(sk->sk_sleep, &wait);
+ remove_wait_queue(sk_sleep(sk), &wait);
if (err)
goto done;
return 0;
}
-static inline int l2cap_do_send(struct sock *sk, struct msghdr *msg, int len)
+static void l2cap_monitor_timeout(unsigned long arg)
{
- struct l2cap_conn *conn = l2cap_pi(sk)->conn;
- struct sk_buff *skb, **frag;
- int err, hlen, count, sent = 0;
- struct l2cap_hdr *lh;
-
- BT_DBG("sk %p len %d", sk, len);
-
- /* First fragment (with L2CAP header) */
- if (sk->sk_type == SOCK_DGRAM)
- hlen = L2CAP_HDR_SIZE + 2;
- else
- hlen = L2CAP_HDR_SIZE;
+ struct sock *sk = (void *) arg;
+ u16 control;
- count = min_t(unsigned int, (conn->mtu - hlen), len);
+ bh_lock_sock(sk);
+ if (l2cap_pi(sk)->retry_count >= l2cap_pi(sk)->remote_max_tx) {
+ l2cap_send_disconn_req(l2cap_pi(sk)->conn, sk);
+ bh_unlock_sock(sk);
+ return;
+ }
- skb = bt_skb_send_alloc(sk, hlen + count,
- msg->msg_flags & MSG_DONTWAIT, &err);
- if (!skb)
- return err;
+ l2cap_pi(sk)->retry_count++;
+ __mod_monitor_timer();
- /* Create L2CAP header */
- lh = (struct l2cap_hdr *) skb_put(skb, L2CAP_HDR_SIZE);
- lh->cid = cpu_to_le16(l2cap_pi(sk)->dcid);
- lh->len = cpu_to_le16(len + (hlen - L2CAP_HDR_SIZE));
+ control = L2CAP_CTRL_POLL;
+ l2cap_send_rr_or_rnr(l2cap_pi(sk), control);
+ bh_unlock_sock(sk);
+}
- if (sk->sk_type == SOCK_DGRAM)
- put_unaligned(l2cap_pi(sk)->psm, (__le16 *) skb_put(skb, 2));
+static void l2cap_retrans_timeout(unsigned long arg)
+{
+ struct sock *sk = (void *) arg;
+ u16 control;
- if (memcpy_fromiovec(skb_put(skb, count), msg->msg_iov, count)) {
- err = -EFAULT;
- goto fail;
- }
+ bh_lock_sock(sk);
+ l2cap_pi(sk)->retry_count = 1;
+ __mod_monitor_timer();
- sent += count;
- len -= count;
+ l2cap_pi(sk)->conn_state |= L2CAP_CONN_WAIT_F;
- /* Continuation fragments (no L2CAP header) */
- frag = &skb_shinfo(skb)->frag_list;
- while (len) {
- count = min_t(unsigned int, conn->mtu, len);
+ control = L2CAP_CTRL_POLL;
+ l2cap_send_rr_or_rnr(l2cap_pi(sk), control);
+ bh_unlock_sock(sk);
+}
- *frag = bt_skb_send_alloc(sk, count, msg->msg_flags & MSG_DONTWAIT, &err);
- if (!*frag)
- goto fail;
+static void l2cap_drop_acked_frames(struct sock *sk)
+{
+ struct sk_buff *skb;
- if (memcpy_fromiovec(skb_put(*frag, count), msg->msg_iov, count)) {
- err = -EFAULT;
- goto fail;
- }
+ while ((skb = skb_peek(TX_QUEUE(sk))) &&
+ l2cap_pi(sk)->unacked_frames) {
+ if (bt_cb(skb)->tx_seq == l2cap_pi(sk)->expected_ack_seq)
+ break;
- sent += count;
- len -= count;
+ skb = skb_dequeue(TX_QUEUE(sk));
+ kfree_skb(skb);
- frag = &(*frag)->next;
+ l2cap_pi(sk)->unacked_frames--;
}
- err = hci_send_acl(conn->hcon, skb, 0);
- if (err < 0)
- goto fail;
- return sent;
+ if (!l2cap_pi(sk)->unacked_frames)
+ del_timer(&l2cap_pi(sk)->retrans_timer);
-fail:
- kfree_skb(skb);
- return err;
+ return;
}
-static int l2cap_sock_sendmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t len)
+static inline int l2cap_do_send(struct sock *sk, struct sk_buff *skb)
{
- struct sock *sk = sock->sk;
- int err = 0;
-
- BT_DBG("sock %p, sk %p", sock, sk);
-
- err = sock_error(sk);
- if (err)
- return err;
-
- if (msg->msg_flags & MSG_OOB)
- return -EOPNOTSUPP;
-
- /* Check outgoing MTU */
- if (sk->sk_type != SOCK_RAW && len > l2cap_pi(sk)->omtu)
- return -EINVAL;
+ struct l2cap_pinfo *pi = l2cap_pi(sk);
+ int err;
- lock_sock(sk);
+ BT_DBG("sk %p, skb %p len %d", sk, skb, skb->len);
- if (sk->sk_state == BT_CONNECTED)
- err = l2cap_do_send(sk, msg, len);
- else
- err = -ENOTCONN;
+ err = hci_send_acl(pi->conn->hcon, skb, 0);
+ if (err < 0)
+ kfree_skb(skb);
- release_sock(sk);
return err;
}
-static int l2cap_sock_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t len, int flags)
+static int l2cap_streaming_send(struct sock *sk)
{
- struct sock *sk = sock->sk;
+ struct sk_buff *skb, *tx_skb;
+ struct l2cap_pinfo *pi = l2cap_pi(sk);
+ u16 control, fcs;
+ int err;
- lock_sock(sk);
+ while ((skb = sk->sk_send_head)) {
+ tx_skb = skb_clone(skb, GFP_ATOMIC);
- if (sk->sk_state == BT_CONNECT2 && bt_sk(sk)->defer_setup) {
- struct l2cap_conn_rsp rsp;
+ control = get_unaligned_le16(tx_skb->data + L2CAP_HDR_SIZE);
+ control |= pi->next_tx_seq << L2CAP_CTRL_TXSEQ_SHIFT;
+ put_unaligned_le16(control, tx_skb->data + L2CAP_HDR_SIZE);
- sk->sk_state = BT_CONFIG;
+ if (pi->fcs == L2CAP_FCS_CRC16) {
+ fcs = crc16(0, (u8 *)tx_skb->data, tx_skb->len - 2);
+ put_unaligned_le16(fcs, tx_skb->data + tx_skb->len - 2);
+ }
- 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);
+ err = l2cap_do_send(sk, tx_skb);
+ if (err < 0) {
+ l2cap_send_disconn_req(pi->conn, sk);
+ return err;
+ }
- release_sock(sk);
- return 0;
- }
+ pi->next_tx_seq = (pi->next_tx_seq + 1) % 64;
- release_sock(sk);
+ if (skb_queue_is_last(TX_QUEUE(sk), skb))
+ sk->sk_send_head = NULL;
+ else
+ sk->sk_send_head = skb_queue_next(TX_QUEUE(sk), skb);
- return bt_sock_recvmsg(iocb, sock, msg, len, flags);
+ skb = skb_dequeue(TX_QUEUE(sk));
+ kfree_skb(skb);
+ }
+ return 0;
}
-static int l2cap_sock_setsockopt_old(struct socket *sock, int optname, char __user *optval, int optlen)
+static int l2cap_retransmit_frame(struct sock *sk, u8 tx_seq)
{
- struct sock *sk = sock->sk;
- struct l2cap_options opts;
- int len, err = 0;
- u32 opt;
-
- BT_DBG("sk %p", sk);
-
- lock_sock(sk);
-
- switch (optname) {
- case L2CAP_OPTIONS:
- opts.imtu = l2cap_pi(sk)->imtu;
- opts.omtu = l2cap_pi(sk)->omtu;
- opts.flush_to = l2cap_pi(sk)->flush_to;
- opts.mode = L2CAP_MODE_BASIC;
+ struct l2cap_pinfo *pi = l2cap_pi(sk);
+ struct sk_buff *skb, *tx_skb;
+ u16 control, fcs;
+ int err;
- len = min_t(unsigned int, sizeof(opts), optlen);
- if (copy_from_user((char *) &opts, optval, len)) {
- err = -EFAULT;
- break;
+ skb = skb_peek(TX_QUEUE(sk));
+ do {
+ if (bt_cb(skb)->tx_seq != tx_seq) {
+ if (skb_queue_is_last(TX_QUEUE(sk), skb))
+ break;
+ skb = skb_queue_next(TX_QUEUE(sk), skb);
+ continue;
}
- l2cap_pi(sk)->imtu = opts.imtu;
- l2cap_pi(sk)->omtu = opts.omtu;
- break;
-
- case L2CAP_LM:
- if (get_user(opt, (u32 __user *) optval)) {
- err = -EFAULT;
+ if (pi->remote_max_tx &&
+ bt_cb(skb)->retries == pi->remote_max_tx) {
+ l2cap_send_disconn_req(pi->conn, sk);
break;
}
- if (opt & L2CAP_LM_AUTH)
- l2cap_pi(sk)->sec_level = BT_SECURITY_LOW;
- if (opt & L2CAP_LM_ENCRYPT)
- l2cap_pi(sk)->sec_level = BT_SECURITY_MEDIUM;
- if (opt & L2CAP_LM_SECURE)
- l2cap_pi(sk)->sec_level = BT_SECURITY_HIGH;
+ tx_skb = skb_clone(skb, GFP_ATOMIC);
+ bt_cb(skb)->retries++;
+ control = get_unaligned_le16(tx_skb->data + L2CAP_HDR_SIZE);
+ control |= (pi->buffer_seq << L2CAP_CTRL_REQSEQ_SHIFT)
+ | (tx_seq << L2CAP_CTRL_TXSEQ_SHIFT);
+ put_unaligned_le16(control, tx_skb->data + L2CAP_HDR_SIZE);
- l2cap_pi(sk)->role_switch = (opt & L2CAP_LM_MASTER);
- l2cap_pi(sk)->force_reliable = (opt & L2CAP_LM_RELIABLE);
- break;
+ if (pi->fcs == L2CAP_FCS_CRC16) {
+ fcs = crc16(0, (u8 *)tx_skb->data, tx_skb->len - 2);
+ put_unaligned_le16(fcs, tx_skb->data + tx_skb->len - 2);
+ }
- default:
- err = -ENOPROTOOPT;
+ err = l2cap_do_send(sk, tx_skb);
+ if (err < 0) {
+ l2cap_send_disconn_req(pi->conn, sk);
+ return err;
+ }
break;
- }
-
- release_sock(sk);
- return err;
+ } while(1);
+ return 0;
}
-static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, int optlen)
+static int l2cap_ertm_send(struct sock *sk)
{
- 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);
+ struct sk_buff *skb, *tx_skb;
+ struct l2cap_pinfo *pi = l2cap_pi(sk);
+ u16 control, fcs;
+ int err, nsent = 0;
- if (level != SOL_BLUETOOTH)
- return -ENOPROTOOPT;
+ if (pi->conn_state & L2CAP_CONN_WAIT_F)
+ return 0;
- lock_sock(sk);
+ while ((skb = sk->sk_send_head) && (!l2cap_tx_window_full(sk)) &&
+ !(pi->conn_state & L2CAP_CONN_REMOTE_BUSY)) {
- switch (optname) {
- case BT_SECURITY:
- if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_RAW) {
- err = -EINVAL;
+ if (pi->remote_max_tx &&
+ bt_cb(skb)->retries == pi->remote_max_tx) {
+ l2cap_send_disconn_req(pi->conn, sk);
break;
}
- sec.level = BT_SECURITY_LOW;
+ tx_skb = skb_clone(skb, GFP_ATOMIC);
- len = min_t(unsigned int, sizeof(sec), optlen);
- if (copy_from_user((char *) &sec, optval, len)) {
- err = -EFAULT;
- break;
- }
+ bt_cb(skb)->retries++;
- if (sec.level < BT_SECURITY_LOW ||
- sec.level > BT_SECURITY_HIGH) {
- err = -EINVAL;
- break;
+ control = get_unaligned_le16(tx_skb->data + L2CAP_HDR_SIZE);
+ if (pi->conn_state & L2CAP_CONN_SEND_FBIT) {
+ control |= L2CAP_CTRL_FINAL;
+ pi->conn_state &= ~L2CAP_CONN_SEND_FBIT;
}
+ control |= (pi->buffer_seq << L2CAP_CTRL_REQSEQ_SHIFT)
+ | (pi->next_tx_seq << L2CAP_CTRL_TXSEQ_SHIFT);
+ put_unaligned_le16(control, tx_skb->data + L2CAP_HDR_SIZE);
- 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 (pi->fcs == L2CAP_FCS_CRC16) {
+ fcs = crc16(0, (u8 *)skb->data, tx_skb->len - 2);
+ put_unaligned_le16(fcs, skb->data + tx_skb->len - 2);
}
- if (get_user(opt, (u32 __user *) optval)) {
- err = -EFAULT;
- break;
+ err = l2cap_do_send(sk, tx_skb);
+ if (err < 0) {
+ l2cap_send_disconn_req(pi->conn, sk);
+ return err;
}
+ __mod_retrans_timer();
- bt_sk(sk)->defer_setup = opt;
- break;
+ bt_cb(skb)->tx_seq = pi->next_tx_seq;
+ pi->next_tx_seq = (pi->next_tx_seq + 1) % 64;
- default:
- err = -ENOPROTOOPT;
- break;
+ pi->unacked_frames++;
+ pi->frames_sent++;
+
+ if (skb_queue_is_last(TX_QUEUE(sk), skb))
+ sk->sk_send_head = NULL;
+ else
+ sk->sk_send_head = skb_queue_next(TX_QUEUE(sk), skb);
+
+ nsent++;
}
- release_sock(sk);
- return err;
+ return nsent;
}
-static int l2cap_sock_getsockopt_old(struct socket *sock, int optname, char __user *optval, int __user *optlen)
+static int l2cap_send_ack(struct l2cap_pinfo *pi)
{
- struct sock *sk = sock->sk;
- struct l2cap_options opts;
- struct l2cap_conninfo cinfo;
- int len, err = 0;
- u32 opt;
+ struct sock *sk = (struct sock *)pi;
+ u16 control = 0;
- BT_DBG("sk %p", sk);
+ control |= pi->buffer_seq << L2CAP_CTRL_REQSEQ_SHIFT;
- if (get_user(len, optlen))
- return -EFAULT;
+ if (pi->conn_state & L2CAP_CONN_LOCAL_BUSY) {
+ control |= L2CAP_SUPER_RCV_NOT_READY;
+ return l2cap_send_sframe(pi, control);
+ } else if (l2cap_ertm_send(sk) == 0) {
+ control |= L2CAP_SUPER_RCV_READY;
+ return l2cap_send_sframe(pi, control);
+ }
+ return 0;
+}
- lock_sock(sk);
+static int l2cap_send_srejtail(struct sock *sk)
+{
+ struct srej_list *tail;
+ u16 control;
- switch (optname) {
- case L2CAP_OPTIONS:
- opts.imtu = l2cap_pi(sk)->imtu;
- opts.omtu = l2cap_pi(sk)->omtu;
- opts.flush_to = l2cap_pi(sk)->flush_to;
- opts.mode = L2CAP_MODE_BASIC;
-
- len = min_t(unsigned int, len, sizeof(opts));
- if (copy_to_user(optval, (char *) &opts, len))
- err = -EFAULT;
+ control = L2CAP_SUPER_SELECT_REJECT;
+ control |= L2CAP_CTRL_FINAL;
- break;
+ tail = list_entry(SREJ_LIST(sk)->prev, struct srej_list, list);
+ control |= tail->tx_seq << L2CAP_CTRL_REQSEQ_SHIFT;
- 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;
- }
+ l2cap_send_sframe(l2cap_pi(sk), control);
- if (l2cap_pi(sk)->role_switch)
- opt |= L2CAP_LM_MASTER;
+ return 0;
+}
- if (l2cap_pi(sk)->force_reliable)
- opt |= L2CAP_LM_RELIABLE;
+static inline int l2cap_skbuff_fromiovec(struct sock *sk, struct msghdr *msg, int len, int count, struct sk_buff *skb)
+{
+ struct l2cap_conn *conn = l2cap_pi(sk)->conn;
+ struct sk_buff **frag;
+ int err, sent = 0;
- if (put_user(opt, (u32 __user *) optval))
- err = -EFAULT;
- break;
+ if (memcpy_fromiovec(skb_put(skb, count), msg->msg_iov, count)) {
+ return -EFAULT;
+ }
- case L2CAP_CONNINFO:
- if (sk->sk_state != BT_CONNECTED &&
- !(sk->sk_state == BT_CONNECT2 &&
- bt_sk(sk)->defer_setup)) {
- err = -ENOTCONN;
- break;
- }
+ sent += count;
+ len -= count;
- cinfo.hci_handle = l2cap_pi(sk)->conn->hcon->handle;
- memcpy(cinfo.dev_class, l2cap_pi(sk)->conn->hcon->dev_class, 3);
+ /* Continuation fragments (no L2CAP header) */
+ frag = &skb_shinfo(skb)->frag_list;
+ while (len) {
+ count = min_t(unsigned int, conn->mtu, len);
- len = min_t(unsigned int, len, sizeof(cinfo));
- if (copy_to_user(optval, (char *) &cinfo, len))
- err = -EFAULT;
+ *frag = bt_skb_send_alloc(sk, count, msg->msg_flags & MSG_DONTWAIT, &err);
+ if (!*frag)
+ return -EFAULT;
+ if (memcpy_fromiovec(skb_put(*frag, count), msg->msg_iov, count))
+ return -EFAULT;
- break;
+ sent += count;
+ len -= count;
- default:
- err = -ENOPROTOOPT;
- break;
+ frag = &(*frag)->next;
}
- release_sock(sk);
- return err;
+ return sent;
}
-static int l2cap_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen)
+static struct sk_buff *l2cap_create_connless_pdu(struct sock *sk, struct msghdr *msg, size_t len)
{
- struct sock *sk = sock->sk;
- struct bt_security sec;
- int len, err = 0;
+ struct l2cap_conn *conn = l2cap_pi(sk)->conn;
+ struct sk_buff *skb;
+ int err, count, hlen = L2CAP_HDR_SIZE + 2;
+ struct l2cap_hdr *lh;
- BT_DBG("sk %p", sk);
+ BT_DBG("sk %p len %d", sk, (int)len);
- if (level == SOL_L2CAP)
- return l2cap_sock_getsockopt_old(sock, optname, optval, optlen);
+ count = min_t(unsigned int, (conn->mtu - hlen), len);
+ skb = bt_skb_send_alloc(sk, count + hlen,
+ msg->msg_flags & MSG_DONTWAIT, &err);
+ if (!skb)
+ return ERR_PTR(-ENOMEM);
- if (level != SOL_BLUETOOTH)
- return -ENOPROTOOPT;
+ /* Create L2CAP header */
+ lh = (struct l2cap_hdr *) skb_put(skb, L2CAP_HDR_SIZE);
+ lh->cid = cpu_to_le16(l2cap_pi(sk)->dcid);
+ lh->len = cpu_to_le16(len + (hlen - L2CAP_HDR_SIZE));
+ put_unaligned_le16(l2cap_pi(sk)->psm, skb_put(skb, 2));
- if (get_user(len, optlen))
- return -EFAULT;
+ err = l2cap_skbuff_fromiovec(sk, msg, len, count, skb);
+ if (unlikely(err < 0)) {
+ kfree_skb(skb);
+ return ERR_PTR(err);
+ }
+ return skb;
+}
- lock_sock(sk);
+static struct sk_buff *l2cap_create_basic_pdu(struct sock *sk, struct msghdr *msg, size_t len)
+{
+ struct l2cap_conn *conn = l2cap_pi(sk)->conn;
+ struct sk_buff *skb;
+ int err, count, hlen = L2CAP_HDR_SIZE;
+ struct l2cap_hdr *lh;
- switch (optname) {
- case BT_SECURITY:
- if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_RAW) {
- err = -EINVAL;
- break;
- }
+ BT_DBG("sk %p len %d", sk, (int)len);
- sec.level = l2cap_pi(sk)->sec_level;
+ count = min_t(unsigned int, (conn->mtu - hlen), len);
+ skb = bt_skb_send_alloc(sk, count + hlen,
+ msg->msg_flags & MSG_DONTWAIT, &err);
+ if (!skb)
+ return ERR_PTR(-ENOMEM);
- len = min_t(unsigned int, len, sizeof(sec));
- if (copy_to_user(optval, (char *) &sec, len))
- err = -EFAULT;
+ /* Create L2CAP header */
+ lh = (struct l2cap_hdr *) skb_put(skb, L2CAP_HDR_SIZE);
+ lh->cid = cpu_to_le16(l2cap_pi(sk)->dcid);
+ lh->len = cpu_to_le16(len + (hlen - L2CAP_HDR_SIZE));
- break;
+ err = l2cap_skbuff_fromiovec(sk, msg, len, count, skb);
+ if (unlikely(err < 0)) {
+ kfree_skb(skb);
+ return ERR_PTR(err);
+ }
+ return skb;
+}
- case BT_DEFER_SETUP:
- if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
- err = -EINVAL;
- break;
- }
+static struct sk_buff *l2cap_create_iframe_pdu(struct sock *sk, struct msghdr *msg, size_t len, u16 control, u16 sdulen)
+{
+ struct l2cap_conn *conn = l2cap_pi(sk)->conn;
+ struct sk_buff *skb;
+ int err, count, hlen = L2CAP_HDR_SIZE + 2;
+ struct l2cap_hdr *lh;
- if (put_user(bt_sk(sk)->defer_setup, (u32 __user *) optval))
- err = -EFAULT;
+ BT_DBG("sk %p len %d", sk, (int)len);
- break;
+ if (!conn)
+ return ERR_PTR(-ENOTCONN);
- default:
- err = -ENOPROTOOPT;
- break;
+ if (sdulen)
+ hlen += 2;
+
+ if (l2cap_pi(sk)->fcs == L2CAP_FCS_CRC16)
+ hlen += 2;
+
+ count = min_t(unsigned int, (conn->mtu - hlen), len);
+ skb = bt_skb_send_alloc(sk, count + hlen,
+ msg->msg_flags & MSG_DONTWAIT, &err);
+ if (!skb)
+ return ERR_PTR(-ENOMEM);
+
+ /* Create L2CAP header */
+ lh = (struct l2cap_hdr *) skb_put(skb, L2CAP_HDR_SIZE);
+ lh->cid = cpu_to_le16(l2cap_pi(sk)->dcid);
+ lh->len = cpu_to_le16(len + (hlen - L2CAP_HDR_SIZE));
+ put_unaligned_le16(control, skb_put(skb, 2));
+ if (sdulen)
+ put_unaligned_le16(sdulen, skb_put(skb, 2));
+
+ err = l2cap_skbuff_fromiovec(sk, msg, len, count, skb);
+ if (unlikely(err < 0)) {
+ kfree_skb(skb);
+ return ERR_PTR(err);
}
- release_sock(sk);
- return err;
+ if (l2cap_pi(sk)->fcs == L2CAP_FCS_CRC16)
+ put_unaligned_le16(0, skb_put(skb, 2));
+
+ bt_cb(skb)->retries = 0;
+ return skb;
}
-static int l2cap_sock_shutdown(struct socket *sock, int how)
+static inline int l2cap_sar_segment_sdu(struct sock *sk, struct msghdr *msg, size_t len)
{
- struct sock *sk = sock->sk;
- int err = 0;
-
- BT_DBG("sock %p, sk %p", sock, sk);
-
- if (!sk)
- return 0;
+ struct l2cap_pinfo *pi = l2cap_pi(sk);
+ struct sk_buff *skb;
+ struct sk_buff_head sar_queue;
+ u16 control;
+ size_t size = 0;
+
+ __skb_queue_head_init(&sar_queue);
+ control = L2CAP_SDU_START;
+ skb = l2cap_create_iframe_pdu(sk, msg, pi->remote_mps, control, len);
+ if (IS_ERR(skb))
+ return PTR_ERR(skb);
+
+ __skb_queue_tail(&sar_queue, skb);
+ len -= pi->remote_mps;
+ size += pi->remote_mps;
+
+ while (len > 0) {
+ size_t buflen;
+
+ if (len > pi->remote_mps) {
+ control = L2CAP_SDU_CONTINUE;
+ buflen = pi->remote_mps;
+ } else {
+ control = L2CAP_SDU_END;
+ buflen = len;
+ }
- lock_sock(sk);
- if (!sk->sk_shutdown) {
- sk->sk_shutdown = SHUTDOWN_MASK;
- l2cap_sock_clear_timer(sk);
- __l2cap_sock_close(sk, 0);
+ skb = l2cap_create_iframe_pdu(sk, msg, buflen, control, 0);
+ if (IS_ERR(skb)) {
+ skb_queue_purge(&sar_queue);
+ return PTR_ERR(skb);
+ }
- if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime)
- err = bt_sock_wait_state(sk, BT_CLOSED,
- sk->sk_lingertime);
+ __skb_queue_tail(&sar_queue, skb);
+ len -= buflen;
+ size += buflen;
}
- release_sock(sk);
- return err;
+ skb_queue_splice_tail(&sar_queue, TX_QUEUE(sk));
+ if (sk->sk_send_head == NULL)
+ sk->sk_send_head = sar_queue.next;
+
+ return size;
}
-static int l2cap_sock_release(struct socket *sock)
+static int l2cap_sock_sendmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t len)
{
struct sock *sk = sock->sk;
+ struct l2cap_pinfo *pi = l2cap_pi(sk);
+ struct sk_buff *skb;
+ u16 control;
int err;
BT_DBG("sock %p, sk %p", sock, sk);
- if (!sk)
- return 0;
+ err = sock_error(sk);
+ if (err)
+ return err;
- err = l2cap_sock_shutdown(sock, 2);
+ if (msg->msg_flags & MSG_OOB)
+ return -EOPNOTSUPP;
- sock_orphan(sk);
- l2cap_sock_kill(sk);
- return err;
-}
+ lock_sock(sk);
-static void l2cap_chan_ready(struct sock *sk)
-{
- struct sock *parent = bt_sk(sk)->parent;
+ if (sk->sk_state != BT_CONNECTED) {
+ err = -ENOTCONN;
+ goto done;
+ }
- BT_DBG("sk %p, parent %p", sk, parent);
+ /* Connectionless channel */
+ if (sk->sk_type == SOCK_DGRAM) {
+ skb = l2cap_create_connless_pdu(sk, msg, len);
+ if (IS_ERR(skb))
+ err = PTR_ERR(skb);
+ else
+ err = l2cap_do_send(sk, skb);
+ goto done;
+ }
- l2cap_pi(sk)->conf_state = 0;
- l2cap_sock_clear_timer(sk);
+ switch (pi->mode) {
+ case L2CAP_MODE_BASIC:
+ /* Check outgoing MTU */
+ if (len > pi->omtu) {
+ err = -EINVAL;
+ goto done;
+ }
- if (!parent) {
- /* Outgoing channel.
- * Wake up socket sleeping on connect.
- */
- sk->sk_state = BT_CONNECTED;
- sk->sk_state_change(sk);
- } else {
- /* Incoming channel.
- * Wake up socket sleeping on accept.
- */
- parent->sk_data_ready(parent, 0);
- }
-}
+ /* Create a basic PDU */
+ skb = l2cap_create_basic_pdu(sk, msg, len);
+ if (IS_ERR(skb)) {
+ err = PTR_ERR(skb);
+ goto done;
+ }
-/* Copy frame to all raw sockets on that connection */
-static void l2cap_raw_recv(struct l2cap_conn *conn, struct sk_buff *skb)
-{
- struct l2cap_chan_list *l = &conn->chan_list;
- struct sk_buff *nskb;
- struct sock *sk;
+ err = l2cap_do_send(sk, skb);
+ if (!err)
+ err = len;
+ break;
- BT_DBG("conn %p", conn);
+ case L2CAP_MODE_ERTM:
+ case L2CAP_MODE_STREAMING:
+ /* Entire SDU fits into one PDU */
+ if (len <= pi->remote_mps) {
+ control = L2CAP_SDU_UNSEGMENTED;
+ skb = l2cap_create_iframe_pdu(sk, msg, len, control, 0);
+ if (IS_ERR(skb)) {
+ err = PTR_ERR(skb);
+ goto done;
+ }
+ __skb_queue_tail(TX_QUEUE(sk), skb);
+ if (sk->sk_send_head == NULL)
+ sk->sk_send_head = skb;
+ } else {
+ /* Segment SDU into multiples PDUs */
+ err = l2cap_sar_segment_sdu(sk, msg, len);
+ if (err < 0)
+ goto done;
+ }
- read_lock(&l->lock);
- for (sk = l->head; sk; sk = l2cap_pi(sk)->next_c) {
- if (sk->sk_type != SOCK_RAW)
- continue;
+ if (pi->mode == L2CAP_MODE_STREAMING)
+ err = l2cap_streaming_send(sk);
+ else
+ err = l2cap_ertm_send(sk);
- /* Don't send frame to the socket it came from */
- if (skb->sk == sk)
- continue;
- nskb = skb_clone(skb, GFP_ATOMIC);
- if (!nskb)
- continue;
+ if (err >= 0)
+ err = len;
+ break;
- if (sock_queue_rcv_skb(sk, nskb))
- kfree_skb(nskb);
+ default:
+ BT_DBG("bad state %1.1x", pi->mode);
+ err = -EINVAL;
}
- read_unlock(&l->lock);
+
+done:
+ release_sock(sk);
+ return err;
}
-/* ---- L2CAP signalling commands ---- */
-static struct sk_buff *l2cap_build_cmd(struct l2cap_conn *conn,
- u8 code, u8 ident, u16 dlen, void *data)
+static int l2cap_sock_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t len, int flags)
{
- struct sk_buff *skb, **frag;
- struct l2cap_cmd_hdr *cmd;
- struct l2cap_hdr *lh;
- int len, count;
+ struct sock *sk = sock->sk;
- BT_DBG("conn %p, code 0x%2.2x, ident 0x%2.2x, len %d",
- conn, code, ident, dlen);
-
- len = L2CAP_HDR_SIZE + L2CAP_CMD_HDR_SIZE + dlen;
- count = min_t(unsigned int, conn->mtu, len);
+ lock_sock(sk);
- skb = bt_skb_alloc(count, GFP_ATOMIC);
- if (!skb)
- return NULL;
+ if (sk->sk_state == BT_CONNECT2 && bt_sk(sk)->defer_setup) {
+ struct l2cap_conn_rsp rsp;
- lh = (struct l2cap_hdr *) skb_put(skb, L2CAP_HDR_SIZE);
- lh->len = cpu_to_le16(L2CAP_CMD_HDR_SIZE + dlen);
- lh->cid = cpu_to_le16(L2CAP_CID_SIGNALING);
+ sk->sk_state = BT_CONFIG;
- cmd = (struct l2cap_cmd_hdr *) skb_put(skb, L2CAP_CMD_HDR_SIZE);
- cmd->code = code;
- cmd->ident = ident;
- cmd->len = cpu_to_le16(dlen);
+ 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 (dlen) {
- count -= L2CAP_HDR_SIZE + L2CAP_CMD_HDR_SIZE;
- memcpy(skb_put(skb, count), data, count);
- data += count;
+ release_sock(sk);
+ return 0;
}
- len -= skb->len;
+ release_sock(sk);
- /* Continuation fragments (no L2CAP header) */
- frag = &skb_shinfo(skb)->frag_list;
- while (len) {
- count = min_t(unsigned int, conn->mtu, len);
+ return bt_sock_recvmsg(iocb, sock, msg, len, flags);
+}
- *frag = bt_skb_alloc(count, GFP_ATOMIC);
- if (!*frag)
- goto fail;
+static int l2cap_sock_setsockopt_old(struct socket *sock, int optname, char __user *optval, unsigned int optlen)
+{
+ struct sock *sk = sock->sk;
+ struct l2cap_options opts;
+ int len, err = 0;
+ u32 opt;
- memcpy(skb_put(*frag, count), data, count);
+ BT_DBG("sk %p", sk);
- len -= count;
- data += count;
+ lock_sock(sk);
- frag = &(*frag)->next;
- }
+ switch (optname) {
+ case L2CAP_OPTIONS:
+ 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 = (__u16)l2cap_pi(sk)->tx_win;
- return skb;
+ len = min_t(unsigned int, sizeof(opts), optlen);
+ if (copy_from_user((char *) &opts, optval, len)) {
+ err = -EFAULT;
+ break;
+ }
-fail:
- kfree_skb(skb);
- return NULL;
+ l2cap_pi(sk)->mode = opts.mode;
+ switch (l2cap_pi(sk)->mode) {
+ case L2CAP_MODE_BASIC:
+ break;
+ case L2CAP_MODE_ERTM:
+ case L2CAP_MODE_STREAMING:
+ if (enable_ertm)
+ break;
+ /* fall through */
+ default:
+ err = -EINVAL;
+ break;
+ }
+
+ l2cap_pi(sk)->imtu = opts.imtu;
+ l2cap_pi(sk)->omtu = opts.omtu;
+ l2cap_pi(sk)->fcs = opts.fcs;
+ l2cap_pi(sk)->max_tx = opts.max_tx;
+ l2cap_pi(sk)->tx_win = (__u8)opts.txwin_size;
+ break;
+
+ case L2CAP_LM:
+ if (get_user(opt, (u32 __user *) optval)) {
+ err = -EFAULT;
+ break;
+ }
+
+ if (opt & L2CAP_LM_AUTH)
+ l2cap_pi(sk)->sec_level = BT_SECURITY_LOW;
+ if (opt & L2CAP_LM_ENCRYPT)
+ l2cap_pi(sk)->sec_level = BT_SECURITY_MEDIUM;
+ if (opt & L2CAP_LM_SECURE)
+ l2cap_pi(sk)->sec_level = BT_SECURITY_HIGH;
+
+ l2cap_pi(sk)->role_switch = (opt & L2CAP_LM_MASTER);
+ l2cap_pi(sk)->force_reliable = (opt & L2CAP_LM_RELIABLE);
+ break;
+
+ default:
+ err = -ENOPROTOOPT;
+ break;
+ }
+
+ release_sock(sk);
+ return err;
}
-static inline int l2cap_get_conf_opt(void **ptr, int *type, int *olen, unsigned long *val)
+static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen)
{
- struct l2cap_conf_opt *opt = *ptr;
- int len;
+ struct sock *sk = sock->sk;
+ struct bt_security sec;
+ int len, err = 0;
+ u32 opt;
- len = L2CAP_CONF_OPT_SIZE + opt->len;
- *ptr += len;
+ BT_DBG("sk %p", sk);
- *type = opt->type;
- *olen = opt->len;
+ if (level == SOL_L2CAP)
+ return l2cap_sock_setsockopt_old(sock, optname, optval, optlen);
- switch (opt->len) {
- case 1:
- *val = *((u8 *) opt->val);
- break;
+ if (level != SOL_BLUETOOTH)
+ return -ENOPROTOOPT;
- case 2:
- *val = __le16_to_cpu(*((__le16 *) opt->val));
+ 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 4:
- *val = __le32_to_cpu(*((__le32 *) opt->val));
+ 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;
default:
- *val = (unsigned long) opt->val;
+ err = -ENOPROTOOPT;
break;
}
- BT_DBG("type 0x%2.2x len %d val 0x%lx", *type, opt->len, *val);
- return len;
+ release_sock(sk);
+ return err;
}
-static void l2cap_add_conf_opt(void **ptr, u8 type, u8 len, unsigned long val)
+static int l2cap_sock_getsockopt_old(struct socket *sock, int optname, char __user *optval, int __user *optlen)
{
- struct l2cap_conf_opt *opt = *ptr;
+ struct sock *sk = sock->sk;
+ struct l2cap_options opts;
+ struct l2cap_conninfo cinfo;
+ int len, err = 0;
+ u32 opt;
- BT_DBG("type 0x%2.2x len %d val 0x%lx", type, len, val);
+ BT_DBG("sk %p", sk);
- opt->type = type;
- opt->len = len;
+ if (get_user(len, optlen))
+ return -EFAULT;
+
+ lock_sock(sk);
+
+ switch (optname) {
+ case L2CAP_OPTIONS:
+ 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 = (__u16)l2cap_pi(sk)->tx_win;
+
+ len = min_t(unsigned int, len, sizeof(opts));
+ if (copy_to_user(optval, (char *) &opts, len))
+ err = -EFAULT;
- switch (len) {
- case 1:
- *((u8 *) opt->val) = val;
break;
- case 2:
- *((__le16 *) opt->val) = cpu_to_le16(val);
+ 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 (put_user(opt, (u32 __user *) optval))
+ err = -EFAULT;
break;
- case 4:
- *((__le32 *) opt->val) = cpu_to_le32(val);
+ 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:
- memcpy(opt->val, (void *) val, len);
+ err = -ENOPROTOOPT;
break;
}
- *ptr += L2CAP_CONF_OPT_SIZE + len;
+ release_sock(sk);
+ return err;
}
-static int l2cap_build_conf_req(struct sock *sk, void *data)
+static int l2cap_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen)
{
- struct l2cap_pinfo *pi = l2cap_pi(sk);
- struct l2cap_conf_req *req = data;
- void *ptr = req->data;
+ struct sock *sk = sock->sk;
+ struct bt_security sec;
+ int len, err = 0;
BT_DBG("sk %p", sk);
- if (pi->imtu != L2CAP_DEFAULT_MTU)
- l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, pi->imtu);
+ 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;
+
+ default:
+ err = -ENOPROTOOPT;
+ break;
+ }
+
+ release_sock(sk);
+ return err;
+}
+
+static int l2cap_sock_shutdown(struct socket *sock, int how)
+{
+ struct sock *sk = sock->sk;
+ int err = 0;
+
+ BT_DBG("sock %p, sk %p", sock, sk);
+
+ if (!sk)
+ return 0;
+
+ lock_sock(sk);
+ if (!sk->sk_shutdown) {
+ sk->sk_shutdown = SHUTDOWN_MASK;
+ l2cap_sock_clear_timer(sk);
+ __l2cap_sock_close(sk, 0);
+
+ if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime)
+ err = bt_sock_wait_state(sk, BT_CLOSED,
+ sk->sk_lingertime);
+ }
+ release_sock(sk);
+ return err;
+}
+
+static int l2cap_sock_release(struct socket *sock)
+{
+ struct sock *sk = sock->sk;
+ int err;
+
+ BT_DBG("sock %p, sk %p", sock, sk);
+
+ if (!sk)
+ return 0;
+
+ err = l2cap_sock_shutdown(sock, 2);
+
+ sock_orphan(sk);
+ l2cap_sock_kill(sk);
+ return err;
+}
+
+static void l2cap_chan_ready(struct sock *sk)
+{
+ struct sock *parent = bt_sk(sk)->parent;
+
+ BT_DBG("sk %p, parent %p", sk, parent);
+
+ l2cap_pi(sk)->conf_state = 0;
+ l2cap_sock_clear_timer(sk);
+
+ if (!parent) {
+ /* Outgoing channel.
+ * Wake up socket sleeping on connect.
+ */
+ sk->sk_state = BT_CONNECTED;
+ sk->sk_state_change(sk);
+ } else {
+ /* Incoming channel.
+ * Wake up socket sleeping on accept.
+ */
+ parent->sk_data_ready(parent, 0);
+ }
+}
+
+/* Copy frame to all raw sockets on that connection */
+static void l2cap_raw_recv(struct l2cap_conn *conn, struct sk_buff *skb)
+{
+ struct l2cap_chan_list *l = &conn->chan_list;
+ struct sk_buff *nskb;
+ struct sock *sk;
+
+ BT_DBG("conn %p", conn);
+
+ read_lock(&l->lock);
+ for (sk = l->head; sk; sk = l2cap_pi(sk)->next_c) {
+ if (sk->sk_type != SOCK_RAW)
+ continue;
+
+ /* Don't send frame to the socket it came from */
+ if (skb->sk == sk)
+ continue;
+ nskb = skb_clone(skb, GFP_ATOMIC);
+ if (!nskb)
+ continue;
+
+ if (sock_queue_rcv_skb(sk, nskb))
+ kfree_skb(nskb);
+ }
+ read_unlock(&l->lock);
+}
+
+/* ---- L2CAP signalling commands ---- */
+static struct sk_buff *l2cap_build_cmd(struct l2cap_conn *conn,
+ u8 code, u8 ident, u16 dlen, void *data)
+{
+ struct sk_buff *skb, **frag;
+ struct l2cap_cmd_hdr *cmd;
+ struct l2cap_hdr *lh;
+ int len, count;
+
+ BT_DBG("conn %p, code 0x%2.2x, ident 0x%2.2x, len %d",
+ conn, code, ident, dlen);
+
+ len = L2CAP_HDR_SIZE + L2CAP_CMD_HDR_SIZE + dlen;
+ count = min_t(unsigned int, conn->mtu, len);
+
+ skb = bt_skb_alloc(count, GFP_ATOMIC);
+ if (!skb)
+ return NULL;
+
+ lh = (struct l2cap_hdr *) skb_put(skb, L2CAP_HDR_SIZE);
+ lh->len = cpu_to_le16(L2CAP_CMD_HDR_SIZE + dlen);
+ lh->cid = cpu_to_le16(L2CAP_CID_SIGNALING);
+
+ cmd = (struct l2cap_cmd_hdr *) skb_put(skb, L2CAP_CMD_HDR_SIZE);
+ cmd->code = code;
+ cmd->ident = ident;
+ cmd->len = cpu_to_le16(dlen);
+
+ if (dlen) {
+ count -= L2CAP_HDR_SIZE + L2CAP_CMD_HDR_SIZE;
+ memcpy(skb_put(skb, count), data, count);
+ data += count;
+ }
+
+ len -= skb->len;
+
+ /* Continuation fragments (no L2CAP header) */
+ frag = &skb_shinfo(skb)->frag_list;
+ while (len) {
+ count = min_t(unsigned int, conn->mtu, len);
+
+ *frag = bt_skb_alloc(count, GFP_ATOMIC);
+ if (!*frag)
+ goto fail;
+
+ memcpy(skb_put(*frag, count), data, count);
+
+ len -= count;
+ data += count;
+
+ frag = &(*frag)->next;
+ }
+
+ return skb;
+
+fail:
+ kfree_skb(skb);
+ return NULL;
+}
+
+static inline int l2cap_get_conf_opt(void **ptr, int *type, int *olen, unsigned long *val)
+{
+ struct l2cap_conf_opt *opt = *ptr;
+ int len;
+
+ len = L2CAP_CONF_OPT_SIZE + opt->len;
+ *ptr += len;
+
+ *type = opt->type;
+ *olen = opt->len;
+
+ switch (opt->len) {
+ case 1:
+ *val = *((u8 *) opt->val);
+ break;
+
+ case 2:
+ *val = __le16_to_cpu(*((__le16 *) opt->val));
+ break;
+
+ case 4:
+ *val = __le32_to_cpu(*((__le32 *) opt->val));
+ break;
+
+ default:
+ *val = (unsigned long) opt->val;
+ break;
+ }
+
+ BT_DBG("type 0x%2.2x len %d val 0x%lx", *type, opt->len, *val);
+ return len;
+}
+
+static void l2cap_add_conf_opt(void **ptr, u8 type, u8 len, unsigned long val)
+{
+ struct l2cap_conf_opt *opt = *ptr;
+
+ BT_DBG("type 0x%2.2x len %d val 0x%lx", type, len, val);
+
+ opt->type = type;
+ opt->len = len;
+
+ switch (len) {
+ case 1:
+ *((u8 *) opt->val) = val;
+ break;
+
+ case 2:
+ *((__le16 *) opt->val) = cpu_to_le16(val);
+ break;
+
+ case 4:
+ *((__le32 *) opt->val) = cpu_to_le32(val);
+ break;
+
+ default:
+ memcpy(opt->val, (void *) val, len);
+ break;
+ }
+
+ *ptr += L2CAP_CONF_OPT_SIZE + len;
+}
+
+static void l2cap_ack_timeout(unsigned long arg)
+{
+ struct sock *sk = (void *) arg;
+
+ bh_lock_sock(sk);
+ l2cap_send_ack(l2cap_pi(sk));
+ bh_unlock_sock(sk);
+}
+
+static inline void l2cap_ertm_init(struct sock *sk)
+{
+ l2cap_pi(sk)->expected_ack_seq = 0;
+ l2cap_pi(sk)->unacked_frames = 0;
+ l2cap_pi(sk)->buffer_seq = 0;
+ l2cap_pi(sk)->num_acked = 0;
+ l2cap_pi(sk)->frames_sent = 0;
+
+ setup_timer(&l2cap_pi(sk)->retrans_timer,
+ l2cap_retrans_timeout, (unsigned long) sk);
+ setup_timer(&l2cap_pi(sk)->monitor_timer,
+ l2cap_monitor_timeout, (unsigned long) sk);
+ setup_timer(&l2cap_pi(sk)->ack_timer,
+ l2cap_ack_timeout, (unsigned long) sk);
+
+ __skb_queue_head_init(SREJ_QUEUE(sk));
+}
+
+static int l2cap_mode_supported(__u8 mode, __u32 feat_mask)
+{
+ u32 local_feat_mask = l2cap_feat_mask;
+ if (enable_ertm)
+ local_feat_mask |= L2CAP_FEAT_ERTM | L2CAP_FEAT_STREAMING;
+
+ switch (mode) {
+ case L2CAP_MODE_ERTM:
+ return L2CAP_FEAT_ERTM & feat_mask & local_feat_mask;
+ case L2CAP_MODE_STREAMING:
+ return L2CAP_FEAT_STREAMING & feat_mask & local_feat_mask;
+ default:
+ return 0x00;
+ }
+}
+
+static inline __u8 l2cap_select_mode(__u8 mode, __u16 remote_feat_mask)
+{
+ switch (mode) {
+ case L2CAP_MODE_STREAMING:
+ case L2CAP_MODE_ERTM:
+ if (l2cap_mode_supported(mode, remote_feat_mask))
+ return mode;
+ /* fall through */
+ default:
+ return L2CAP_MODE_BASIC;
+ }
+}
+
+static int l2cap_build_conf_req(struct sock *sk, void *data)
+{
+ struct l2cap_pinfo *pi = l2cap_pi(sk);
+ struct l2cap_conf_req *req = data;
+ struct l2cap_conf_rfc rfc = { .mode = pi->mode };
+ void *ptr = req->data;
+
+ BT_DBG("sk %p", sk);
+
+ if (pi->num_conf_req || pi->num_conf_rsp)
+ goto done;
+
+ switch (pi->mode) {
+ case L2CAP_MODE_STREAMING:
+ case L2CAP_MODE_ERTM:
+ pi->conf_state |= L2CAP_CONF_STATE2_DEVICE;
+ if (!l2cap_mode_supported(pi->mode, pi->conn->feat_mask))
+ l2cap_send_disconn_req(pi->conn, sk);
+ break;
+ default:
+ pi->mode = l2cap_select_mode(rfc.mode, pi->conn->feat_mask);
+ break;
+ }
+
+done:
+ switch (pi->mode) {
+ case L2CAP_MODE_BASIC:
+ if (pi->imtu != L2CAP_DEFAULT_MTU)
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, pi->imtu);
+ break;
+
+ case L2CAP_MODE_ERTM:
+ rfc.mode = L2CAP_MODE_ERTM;
+ rfc.txwin_size = pi->tx_win;
+ rfc.max_transmit = pi->max_tx;
+ rfc.retrans_timeout = 0;
+ rfc.monitor_timeout = 0;
+ rfc.max_pdu_size = cpu_to_le16(L2CAP_DEFAULT_MAX_PDU_SIZE);
+ if (L2CAP_DEFAULT_MAX_PDU_SIZE > pi->conn->mtu - 10)
+ rfc.max_pdu_size = cpu_to_le16(pi->conn->mtu - 10);
+
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC,
+ sizeof(rfc), (unsigned long) &rfc);
+
+ if (!(pi->conn->feat_mask & L2CAP_FEAT_FCS))
+ break;
+
+ if (pi->fcs == L2CAP_FCS_NONE ||
+ pi->conf_state & L2CAP_CONF_NO_FCS_RECV) {
+ pi->fcs = L2CAP_FCS_NONE;
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_FCS, 1, pi->fcs);
+ }
+ break;
+
+ case L2CAP_MODE_STREAMING:
+ rfc.mode = L2CAP_MODE_STREAMING;
+ rfc.txwin_size = 0;
+ rfc.max_transmit = 0;
+ rfc.retrans_timeout = 0;
+ rfc.monitor_timeout = 0;
+ rfc.max_pdu_size = cpu_to_le16(L2CAP_DEFAULT_MAX_PDU_SIZE);
+ if (L2CAP_DEFAULT_MAX_PDU_SIZE > pi->conn->mtu - 10)
+ rfc.max_pdu_size = cpu_to_le16(pi->conn->mtu - 10);
+
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC,
+ sizeof(rfc), (unsigned long) &rfc);
+
+ if (!(pi->conn->feat_mask & L2CAP_FEAT_FCS))
+ break;
+
+ if (pi->fcs == L2CAP_FCS_NONE ||
+ pi->conf_state & L2CAP_CONF_NO_FCS_RECV) {
+ pi->fcs = L2CAP_FCS_NONE;
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_FCS, 1, pi->fcs);
+ }
+ break;
+ }
+
+ /* 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);
+
+ req->dcid = cpu_to_le16(pi->dcid);
+ req->flags = cpu_to_le16(0);
+
+ return ptr - data;
+}
+
+static int l2cap_parse_conf_req(struct sock *sk, void *data)
+{
+ struct l2cap_pinfo *pi = l2cap_pi(sk);
+ struct l2cap_conf_rsp *rsp = data;
+ void *ptr = rsp->data;
+ void *req = pi->conf_req;
+ int len = pi->conf_len;
+ int type, hint, olen;
+ unsigned long val;
+ struct l2cap_conf_rfc rfc = { .mode = L2CAP_MODE_BASIC };
+ u16 mtu = L2CAP_DEFAULT_MTU;
+ u16 result = L2CAP_CONF_SUCCESS;
+
+ BT_DBG("sk %p", sk);
+
+ while (len >= L2CAP_CONF_OPT_SIZE) {
+ len -= l2cap_get_conf_opt(&req, &type, &olen, &val);
+
+ hint = type & L2CAP_CONF_HINT;
+ type &= L2CAP_CONF_MASK;
+
+ switch (type) {
+ case L2CAP_CONF_MTU:
+ mtu = val;
+ break;
+
+ case L2CAP_CONF_FLUSH_TO:
+ pi->flush_to = val;
+ break;
+
+ case L2CAP_CONF_QOS:
+ break;
+
+ case L2CAP_CONF_RFC:
+ if (olen == sizeof(rfc))
+ memcpy(&rfc, (void *) val, olen);
+ break;
+
+ case L2CAP_CONF_FCS:
+ if (val == L2CAP_FCS_NONE)
+ pi->conf_state |= L2CAP_CONF_NO_FCS_RECV;
+
+ break;
+
+ default:
+ if (hint)
+ break;
+
+ result = L2CAP_CONF_UNKNOWN;
+ *((u8 *) ptr++) = type;
+ break;
+ }
+ }
+
+ if (pi->num_conf_rsp || pi->num_conf_req)
+ goto done;
+
+ switch (pi->mode) {
+ case L2CAP_MODE_STREAMING:
+ case L2CAP_MODE_ERTM:
+ pi->conf_state |= L2CAP_CONF_STATE2_DEVICE;
+ if (!l2cap_mode_supported(pi->mode, pi->conn->feat_mask))
+ return -ECONNREFUSED;
+ break;
+ default:
+ pi->mode = l2cap_select_mode(rfc.mode, pi->conn->feat_mask);
+ break;
+ }
+
+done:
+ if (pi->mode != rfc.mode) {
+ result = L2CAP_CONF_UNACCEPT;
+ rfc.mode = pi->mode;
+
+ if (pi->num_conf_rsp == 1)
+ return -ECONNREFUSED;
+
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC,
+ sizeof(rfc), (unsigned long) &rfc);
+ }
+
+
+ if (result == L2CAP_CONF_SUCCESS) {
+ /* Configure output options and let the other side know
+ * which ones we don't like. */
+
+ if (mtu < L2CAP_DEFAULT_MIN_MTU)
+ result = L2CAP_CONF_UNACCEPT;
+ else {
+ pi->omtu = mtu;
+ pi->conf_state |= L2CAP_CONF_MTU_DONE;
+ }
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, pi->omtu);
+
+ switch (rfc.mode) {
+ case L2CAP_MODE_BASIC:
+ pi->fcs = L2CAP_FCS_NONE;
+ pi->conf_state |= L2CAP_CONF_MODE_DONE;
+ break;
+
+ case L2CAP_MODE_ERTM:
+ pi->remote_tx_win = rfc.txwin_size;
+ pi->remote_max_tx = rfc.max_transmit;
+ if (rfc.max_pdu_size > pi->conn->mtu - 10)
+ rfc.max_pdu_size = le16_to_cpu(pi->conn->mtu - 10);
+
+ pi->remote_mps = le16_to_cpu(rfc.max_pdu_size);
+
+ rfc.retrans_timeout =
+ le16_to_cpu(L2CAP_DEFAULT_RETRANS_TO);
+ rfc.monitor_timeout =
+ le16_to_cpu(L2CAP_DEFAULT_MONITOR_TO);
+
+ pi->conf_state |= L2CAP_CONF_MODE_DONE;
+
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC,
+ sizeof(rfc), (unsigned long) &rfc);
+
+ break;
+
+ case L2CAP_MODE_STREAMING:
+ if (rfc.max_pdu_size > pi->conn->mtu - 10)
+ rfc.max_pdu_size = le16_to_cpu(pi->conn->mtu - 10);
+
+ pi->remote_mps = le16_to_cpu(rfc.max_pdu_size);
+
+ pi->conf_state |= L2CAP_CONF_MODE_DONE;
+
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC,
+ sizeof(rfc), (unsigned long) &rfc);
+
+ break;
+
+ default:
+ result = L2CAP_CONF_UNACCEPT;
+
+ memset(&rfc, 0, sizeof(rfc));
+ rfc.mode = pi->mode;
+ }
+
+ if (result == L2CAP_CONF_SUCCESS)
+ pi->conf_state |= L2CAP_CONF_OUTPUT_DONE;
+ }
+ rsp->scid = cpu_to_le16(pi->dcid);
+ rsp->result = cpu_to_le16(result);
+ rsp->flags = cpu_to_le16(0x0000);
+
+ return ptr - data;
+}
+
+static int l2cap_parse_conf_rsp(struct sock *sk, void *rsp, int len, void *data, u16 *result)
+{
+ struct l2cap_pinfo *pi = l2cap_pi(sk);
+ struct l2cap_conf_req *req = data;
+ void *ptr = req->data;
+ int type, olen;
+ unsigned long val;
+ struct l2cap_conf_rfc rfc;
+
+ BT_DBG("sk %p, rsp %p, len %d, req %p", sk, rsp, len, data);
+
+ while (len >= L2CAP_CONF_OPT_SIZE) {
+ len -= l2cap_get_conf_opt(&rsp, &type, &olen, &val);
+
+ switch (type) {
+ case L2CAP_CONF_MTU:
+ if (val < L2CAP_DEFAULT_MIN_MTU) {
+ *result = L2CAP_CONF_UNACCEPT;
+ pi->omtu = L2CAP_DEFAULT_MIN_MTU;
+ } else
+ pi->omtu = val;
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, pi->omtu);
+ break;
+
+ case L2CAP_CONF_FLUSH_TO:
+ pi->flush_to = val;
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_FLUSH_TO,
+ 2, pi->flush_to);
+ break;
+
+ case L2CAP_CONF_RFC:
+ if (olen == sizeof(rfc))
+ memcpy(&rfc, (void *)val, olen);
+
+ if ((pi->conf_state & L2CAP_CONF_STATE2_DEVICE) &&
+ rfc.mode != pi->mode)
+ return -ECONNREFUSED;
+
+ pi->mode = rfc.mode;
+ pi->fcs = 0;
+
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC,
+ sizeof(rfc), (unsigned long) &rfc);
+ break;
+ }
+ }
+
+ if (*result == L2CAP_CONF_SUCCESS) {
+ switch (rfc.mode) {
+ case L2CAP_MODE_ERTM:
+ pi->remote_tx_win = rfc.txwin_size;
+ pi->retrans_timeout = le16_to_cpu(rfc.retrans_timeout);
+ pi->monitor_timeout = le16_to_cpu(rfc.monitor_timeout);
+ pi->mps = le16_to_cpu(rfc.max_pdu_size);
+ break;
+ case L2CAP_MODE_STREAMING:
+ pi->mps = le16_to_cpu(rfc.max_pdu_size);
+ }
+ }
+
+ req->dcid = cpu_to_le16(pi->dcid);
+ req->flags = cpu_to_le16(0x0000);
+
+ return ptr - data;
+}
+
+static int l2cap_build_conf_rsp(struct sock *sk, void *data, u16 result, u16 flags)
+{
+ struct l2cap_conf_rsp *rsp = data;
+ void *ptr = rsp->data;
+
+ BT_DBG("sk %p", sk);
+
+ rsp->scid = cpu_to_le16(l2cap_pi(sk)->dcid);
+ rsp->result = cpu_to_le16(result);
+ rsp->flags = cpu_to_le16(flags);
+
+ return ptr - data;
+}
+
+static void l2cap_conf_rfc_get(struct sock *sk, void *rsp, int len)
+{
+ struct l2cap_pinfo *pi = l2cap_pi(sk);
+ int type, olen;
+ unsigned long val;
+ struct l2cap_conf_rfc rfc;
+
+ BT_DBG("sk %p, rsp %p, len %d", sk, rsp, len);
+
+ if ((pi->mode != L2CAP_MODE_ERTM) && (pi->mode != L2CAP_MODE_STREAMING))
+ return;
+
+ while (len >= L2CAP_CONF_OPT_SIZE) {
+ len -= l2cap_get_conf_opt(&rsp, &type, &olen, &val);
+
+ switch (type) {
+ case L2CAP_CONF_RFC:
+ if (olen == sizeof(rfc))
+ memcpy(&rfc, (void *)val, olen);
+ goto done;
+ }
+ }
+
+done:
+ switch (rfc.mode) {
+ case L2CAP_MODE_ERTM:
+ pi->remote_tx_win = rfc.txwin_size;
+ pi->retrans_timeout = le16_to_cpu(rfc.retrans_timeout);
+ pi->monitor_timeout = le16_to_cpu(rfc.monitor_timeout);
+ pi->mps = le16_to_cpu(rfc.max_pdu_size);
+ break;
+ case L2CAP_MODE_STREAMING:
+ pi->mps = le16_to_cpu(rfc.max_pdu_size);
+ }
+}
+
+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;
+
+ if (rej->reason != 0x0000)
+ return 0;
+
+ if ((conn->info_state & L2CAP_INFO_FEAT_MASK_REQ_SENT) &&
+ cmd->ident == conn->info_ident) {
+ del_timer(&conn->info_timer);
+
+ conn->info_state |= L2CAP_INFO_FEAT_MASK_REQ_DONE;
+ conn->info_ident = 0;
+
+ l2cap_conn_start(conn);
+ }
+
+ return 0;
+}
+
+static inline int l2cap_connect_req(struct l2cap_conn *conn, struct l2cap_cmd_hdr *cmd, u8 *data)
+{
+ struct l2cap_chan_list *list = &conn->chan_list;
+ struct l2cap_conn_req *req = (struct l2cap_conn_req *) data;
+ struct l2cap_conn_rsp rsp;
+ struct sock *sk, *parent;
+ int result, status = L2CAP_CS_NO_INFO;
+
+ u16 dcid = 0, scid = __le16_to_cpu(req->scid);
+ __le16 psm = req->psm;
+
+ BT_DBG("psm 0x%2.2x scid 0x%4.4x", psm, scid);
+
+ /* Check if we have socket listening on psm */
+ parent = l2cap_get_sock_by_psm(BT_LISTEN, psm, conn->src);
+ if (!parent) {
+ result = L2CAP_CR_BAD_PSM;
+ goto sendresp;
+ }
+
+ /* Check if the ACL is secure enough (if not SDP) */
+ if (psm != cpu_to_le16(0x0001) &&
+ !hci_conn_check_link_mode(conn->hcon)) {
+ conn->disc_reason = 0x05;
+ result = L2CAP_CR_SEC_BLOCK;
+ goto response;
+ }
+
+ result = L2CAP_CR_NO_MEM;
+
+ /* Check for backlog size */
+ if (sk_acceptq_is_full(parent)) {
+ BT_DBG("backlog full %d", parent->sk_ack_backlog);
+ goto response;
+ }
+
+ sk = l2cap_sock_alloc(sock_net(parent), NULL, BTPROTO_L2CAP, GFP_ATOMIC);
+ if (!sk)
+ goto response;
+
+ write_lock_bh(&list->lock);
+
+ /* Check if we already have channel with that dcid */
+ if (__l2cap_get_chan_by_dcid(list, scid)) {
+ write_unlock_bh(&list->lock);
+ sock_set_flag(sk, SOCK_ZAPPED);
+ l2cap_sock_kill(sk);
+ goto response;
+ }
+
+ hci_conn_hold(conn->hcon);
+
+ l2cap_sock_init(sk, parent);
+ bacpy(&bt_sk(sk)->src, conn->src);
+ bacpy(&bt_sk(sk)->dst, conn->dst);
+ l2cap_pi(sk)->psm = psm;
+ l2cap_pi(sk)->dcid = scid;
+
+ __l2cap_chan_add(conn, sk, parent);
+ dcid = l2cap_pi(sk)->scid;
+
+ l2cap_sock_set_timer(sk, sk->sk_sndtimeo);
+
+ l2cap_pi(sk)->ident = cmd->ident;
+
+ if (conn->info_state & L2CAP_INFO_FEAT_MASK_REQ_DONE) {
+ if (l2cap_check_security(sk)) {
+ if (bt_sk(sk)->defer_setup) {
+ sk->sk_state = BT_CONNECT2;
+ result = L2CAP_CR_PEND;
+ status = L2CAP_CS_AUTHOR_PEND;
+ parent->sk_data_ready(parent, 0);
+ } else {
+ sk->sk_state = BT_CONFIG;
+ result = L2CAP_CR_SUCCESS;
+ status = L2CAP_CS_NO_INFO;
+ }
+ } else {
+ sk->sk_state = BT_CONNECT2;
+ result = L2CAP_CR_PEND;
+ status = L2CAP_CS_AUTHEN_PEND;
+ }
+ } else {
+ sk->sk_state = BT_CONNECT2;
+ result = L2CAP_CR_PEND;
+ status = L2CAP_CS_NO_INFO;
+ }
+
+ write_unlock_bh(&list->lock);
+
+response:
+ bh_unlock_sock(parent);
+
+sendresp:
+ rsp.scid = cpu_to_le16(scid);
+ rsp.dcid = cpu_to_le16(dcid);
+ rsp.result = cpu_to_le16(result);
+ rsp.status = cpu_to_le16(status);
+ l2cap_send_cmd(conn, cmd->ident, L2CAP_CONN_RSP, sizeof(rsp), &rsp);
+
+ if (result == L2CAP_CR_PEND && status == L2CAP_CS_NO_INFO) {
+ struct l2cap_info_req info;
+ info.type = cpu_to_le16(L2CAP_IT_FEAT_MASK);
+
+ conn->info_state |= L2CAP_INFO_FEAT_MASK_REQ_SENT;
+ conn->info_ident = l2cap_get_ident(conn);
+
+ mod_timer(&conn->info_timer, jiffies +
+ msecs_to_jiffies(L2CAP_INFO_TIMEOUT));
+
+ l2cap_send_cmd(conn, conn->info_ident,
+ L2CAP_INFO_REQ, sizeof(info), &info);
+ }
+
+ return 0;
+}
+
+static inline int l2cap_connect_rsp(struct l2cap_conn *conn, struct l2cap_cmd_hdr *cmd, u8 *data)
+{
+ struct l2cap_conn_rsp *rsp = (struct l2cap_conn_rsp *) data;
+ u16 scid, dcid, result, status;
+ struct sock *sk;
+ u8 req[128];
+
+ scid = __le16_to_cpu(rsp->scid);
+ dcid = __le16_to_cpu(rsp->dcid);
+ result = __le16_to_cpu(rsp->result);
+ status = __le16_to_cpu(rsp->status);
+
+ BT_DBG("dcid 0x%4.4x scid 0x%4.4x result 0x%2.2x status 0x%2.2x", dcid, scid, result, status);
+
+ if (scid) {
+ sk = l2cap_get_chan_by_scid(&conn->chan_list, scid);
+ if (!sk)
+ return 0;
+ } else {
+ sk = l2cap_get_chan_by_ident(&conn->chan_list, cmd->ident);
+ if (!sk)
+ 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_pi(sk)->conf_state &= ~L2CAP_CONF_CONNECT_PEND;
+
+ l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ,
+ l2cap_build_conf_req(sk, req), req);
+ l2cap_pi(sk)->num_conf_req++;
+ break;
+
+ case L2CAP_CR_PEND:
+ l2cap_pi(sk)->conf_state |= L2CAP_CONF_CONNECT_PEND;
+ break;
+
+ default:
+ l2cap_chan_del(sk, ECONNREFUSED);
+ break;
+ }
+
+ bh_unlock_sock(sk);
+ return 0;
+}
+
+static inline int l2cap_config_req(struct l2cap_conn *conn, struct l2cap_cmd_hdr *cmd, u16 cmd_len, u8 *data)
+{
+ struct l2cap_conf_req *req = (struct l2cap_conf_req *) data;
+ u16 dcid, flags;
+ u8 rsp[64];
+ struct sock *sk;
+ int len;
+
+ dcid = __le16_to_cpu(req->dcid);
+ flags = __le16_to_cpu(req->flags);
+
+ BT_DBG("dcid 0x%4.4x flags 0x%2.2x", dcid, flags);
+
+ sk = l2cap_get_chan_by_scid(&conn->chan_list, dcid);
+ if (!sk)
+ return -ENOENT;
+
+ if (sk->sk_state == BT_DISCONN)
+ goto unlock;
+
+ /* Reject if config buffer is too small. */
+ len = cmd_len - sizeof(*req);
+ if (l2cap_pi(sk)->conf_len + len > sizeof(l2cap_pi(sk)->conf_req)) {
+ l2cap_send_cmd(conn, cmd->ident, L2CAP_CONF_RSP,
+ l2cap_build_conf_rsp(sk, rsp,
+ L2CAP_CONF_REJECT, flags), rsp);
+ goto unlock;
+ }
+
+ /* Store config. */
+ memcpy(l2cap_pi(sk)->conf_req + l2cap_pi(sk)->conf_len, req->data, len);
+ l2cap_pi(sk)->conf_len += len;
+
+ if (flags & 0x0001) {
+ /* Incomplete config. Send empty response. */
+ l2cap_send_cmd(conn, cmd->ident, L2CAP_CONF_RSP,
+ l2cap_build_conf_rsp(sk, rsp,
+ L2CAP_CONF_SUCCESS, 0x0001), rsp);
+ goto unlock;
+ }
+
+ /* Complete config. */
+ len = l2cap_parse_conf_req(sk, rsp);
+ if (len < 0) {
+ l2cap_send_disconn_req(conn, sk);
+ goto unlock;
+ }
+
+ l2cap_send_cmd(conn, cmd->ident, L2CAP_CONF_RSP, len, rsp);
+ l2cap_pi(sk)->num_conf_rsp++;
+
+ /* Reset config buffer. */
+ l2cap_pi(sk)->conf_len = 0;
+
+ if (!(l2cap_pi(sk)->conf_state & L2CAP_CONF_OUTPUT_DONE))
+ goto unlock;
+
+ if (l2cap_pi(sk)->conf_state & L2CAP_CONF_INPUT_DONE) {
+ if (!(l2cap_pi(sk)->conf_state & L2CAP_CONF_NO_FCS_RECV) ||
+ l2cap_pi(sk)->fcs != L2CAP_FCS_NONE)
+ l2cap_pi(sk)->fcs = L2CAP_FCS_CRC16;
+
+ sk->sk_state = BT_CONNECTED;
+
+ l2cap_pi(sk)->next_tx_seq = 0;
+ l2cap_pi(sk)->expected_tx_seq = 0;
+ __skb_queue_head_init(TX_QUEUE(sk));
+ if (l2cap_pi(sk)->mode == L2CAP_MODE_ERTM)
+ l2cap_ertm_init(sk);
+
+ l2cap_chan_ready(sk);
+ goto unlock;
+ }
+
+ if (!(l2cap_pi(sk)->conf_state & L2CAP_CONF_REQ_SENT)) {
+ u8 buf[64];
+ l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ,
+ l2cap_build_conf_req(sk, buf), buf);
+ l2cap_pi(sk)->num_conf_req++;
+ }
+
+unlock:
+ bh_unlock_sock(sk);
+ return 0;
+}
+
+static inline int l2cap_config_rsp(struct l2cap_conn *conn, struct l2cap_cmd_hdr *cmd, u8 *data)
+{
+ struct l2cap_conf_rsp *rsp = (struct l2cap_conf_rsp *)data;
+ u16 scid, flags, result;
+ struct sock *sk;
+ int len = cmd->len - sizeof(*rsp);
+
+ scid = __le16_to_cpu(rsp->scid);
+ flags = __le16_to_cpu(rsp->flags);
+ result = __le16_to_cpu(rsp->result);
+
+ BT_DBG("scid 0x%4.4x flags 0x%2.2x result 0x%2.2x",
+ scid, flags, result);
+
+ sk = l2cap_get_chan_by_scid(&conn->chan_list, scid);
+ if (!sk)
+ return 0;
+
+ switch (result) {
+ case L2CAP_CONF_SUCCESS:
+ l2cap_conf_rfc_get(sk, rsp->data, len);
+ break;
+
+ case L2CAP_CONF_UNACCEPT:
+ if (l2cap_pi(sk)->num_conf_rsp <= L2CAP_CONF_MAX_CONF_RSP) {
+ char req[64];
+
+ if (len > sizeof(req) - sizeof(struct l2cap_conf_req)) {
+ l2cap_send_disconn_req(conn, sk);
+ goto done;
+ }
+
+ /* throw out any old stored conf requests */
+ result = L2CAP_CONF_SUCCESS;
+ len = l2cap_parse_conf_rsp(sk, rsp->data,
+ len, req, &result);
+ if (len < 0) {
+ l2cap_send_disconn_req(conn, sk);
+ goto done;
+ }
+
+ l2cap_send_cmd(conn, l2cap_get_ident(conn),
+ L2CAP_CONF_REQ, len, req);
+ l2cap_pi(sk)->num_conf_req++;
+ if (result != L2CAP_CONF_SUCCESS)
+ goto done;
+ break;
+ }
+
+ default:
+ sk->sk_state = BT_DISCONN;
+ sk->sk_err = ECONNRESET;
+ l2cap_sock_set_timer(sk, HZ * 5);
+ l2cap_send_disconn_req(conn, sk);
+ goto done;
+ }
+
+ if (flags & 0x01)
+ goto done;
+
+ l2cap_pi(sk)->conf_state |= L2CAP_CONF_INPUT_DONE;
+
+ if (l2cap_pi(sk)->conf_state & L2CAP_CONF_OUTPUT_DONE) {
+ if (!(l2cap_pi(sk)->conf_state & L2CAP_CONF_NO_FCS_RECV) ||
+ l2cap_pi(sk)->fcs != L2CAP_FCS_NONE)
+ l2cap_pi(sk)->fcs = L2CAP_FCS_CRC16;
- /* 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);
+ sk->sk_state = BT_CONNECTED;
+ l2cap_pi(sk)->next_tx_seq = 0;
+ l2cap_pi(sk)->expected_tx_seq = 0;
+ __skb_queue_head_init(TX_QUEUE(sk));
+ if (l2cap_pi(sk)->mode == L2CAP_MODE_ERTM)
+ l2cap_ertm_init(sk);
- req->dcid = cpu_to_le16(pi->dcid);
- req->flags = cpu_to_le16(0);
+ l2cap_chan_ready(sk);
+ }
- return ptr - data;
+done:
+ bh_unlock_sock(sk);
+ return 0;
}
-static int l2cap_parse_conf_req(struct sock *sk, void *data)
+static inline int l2cap_disconnect_req(struct l2cap_conn *conn, struct l2cap_cmd_hdr *cmd, u8 *data)
{
- struct l2cap_pinfo *pi = l2cap_pi(sk);
- struct l2cap_conf_rsp *rsp = data;
- void *ptr = rsp->data;
- void *req = pi->conf_req;
- int len = pi->conf_len;
- int type, hint, olen;
- unsigned long val;
- struct l2cap_conf_rfc rfc = { .mode = L2CAP_MODE_BASIC };
- u16 mtu = L2CAP_DEFAULT_MTU;
- u16 result = L2CAP_CONF_SUCCESS;
+ struct l2cap_disconn_req *req = (struct l2cap_disconn_req *) data;
+ struct l2cap_disconn_rsp rsp;
+ u16 dcid, scid;
+ struct sock *sk;
- BT_DBG("sk %p", sk);
+ scid = __le16_to_cpu(req->scid);
+ dcid = __le16_to_cpu(req->dcid);
- while (len >= L2CAP_CONF_OPT_SIZE) {
- len -= l2cap_get_conf_opt(&req, &type, &olen, &val);
+ BT_DBG("scid 0x%4.4x dcid 0x%4.4x", scid, dcid);
- hint = type & L2CAP_CONF_HINT;
- type &= L2CAP_CONF_MASK;
+ sk = l2cap_get_chan_by_scid(&conn->chan_list, dcid);
+ if (!sk)
+ return 0;
- switch (type) {
- case L2CAP_CONF_MTU:
- mtu = val;
- break;
+ rsp.dcid = cpu_to_le16(l2cap_pi(sk)->scid);
+ rsp.scid = cpu_to_le16(l2cap_pi(sk)->dcid);
+ l2cap_send_cmd(conn, cmd->ident, L2CAP_DISCONN_RSP, sizeof(rsp), &rsp);
- case L2CAP_CONF_FLUSH_TO:
- pi->flush_to = val;
- break;
+ sk->sk_shutdown = SHUTDOWN_MASK;
- case L2CAP_CONF_QOS:
- break;
+ skb_queue_purge(TX_QUEUE(sk));
- case L2CAP_CONF_RFC:
- if (olen == sizeof(rfc))
- memcpy(&rfc, (void *) val, olen);
- break;
+ if (l2cap_pi(sk)->mode == L2CAP_MODE_ERTM) {
+ skb_queue_purge(SREJ_QUEUE(sk));
+ del_timer(&l2cap_pi(sk)->retrans_timer);
+ del_timer(&l2cap_pi(sk)->monitor_timer);
+ del_timer(&l2cap_pi(sk)->ack_timer);
+ }
- default:
- if (hint)
- break;
+ l2cap_chan_del(sk, ECONNRESET);
+ bh_unlock_sock(sk);
- result = L2CAP_CONF_UNKNOWN;
- *((u8 *) ptr++) = type;
- break;
- }
- }
+ l2cap_sock_kill(sk);
+ return 0;
+}
- if (result == L2CAP_CONF_SUCCESS) {
- /* Configure output options and let the other side know
- * which ones we don't like. */
+static inline int l2cap_disconnect_rsp(struct l2cap_conn *conn, struct l2cap_cmd_hdr *cmd, u8 *data)
+{
+ struct l2cap_disconn_rsp *rsp = (struct l2cap_disconn_rsp *) data;
+ u16 dcid, scid;
+ struct sock *sk;
- if (rfc.mode == L2CAP_MODE_BASIC) {
- if (mtu < pi->omtu)
- result = L2CAP_CONF_UNACCEPT;
- else {
- pi->omtu = mtu;
- pi->conf_state |= L2CAP_CONF_OUTPUT_DONE;
- }
+ scid = __le16_to_cpu(rsp->scid);
+ dcid = __le16_to_cpu(rsp->dcid);
- l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, pi->omtu);
- } else {
- result = L2CAP_CONF_UNACCEPT;
+ BT_DBG("dcid 0x%4.4x scid 0x%4.4x", dcid, scid);
- memset(&rfc, 0, sizeof(rfc));
- rfc.mode = L2CAP_MODE_BASIC;
+ sk = l2cap_get_chan_by_scid(&conn->chan_list, scid);
+ if (!sk)
+ return 0;
- l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC,
- sizeof(rfc), (unsigned long) &rfc);
- }
+ skb_queue_purge(TX_QUEUE(sk));
+
+ if (l2cap_pi(sk)->mode == L2CAP_MODE_ERTM) {
+ skb_queue_purge(SREJ_QUEUE(sk));
+ del_timer(&l2cap_pi(sk)->retrans_timer);
+ del_timer(&l2cap_pi(sk)->monitor_timer);
+ del_timer(&l2cap_pi(sk)->ack_timer);
}
- rsp->scid = cpu_to_le16(pi->dcid);
- rsp->result = cpu_to_le16(result);
- rsp->flags = cpu_to_le16(0x0000);
+ l2cap_chan_del(sk, 0);
+ bh_unlock_sock(sk);
- return ptr - data;
+ l2cap_sock_kill(sk);
+ return 0;
}
-static int l2cap_build_conf_rsp(struct sock *sk, void *data, u16 result, u16 flags)
+static inline int l2cap_information_req(struct l2cap_conn *conn, struct l2cap_cmd_hdr *cmd, u8 *data)
{
- struct l2cap_conf_rsp *rsp = data;
- void *ptr = rsp->data;
+ struct l2cap_info_req *req = (struct l2cap_info_req *) data;
+ u16 type;
- BT_DBG("sk %p", sk);
+ type = __le16_to_cpu(req->type);
- rsp->scid = cpu_to_le16(l2cap_pi(sk)->dcid);
- rsp->result = cpu_to_le16(result);
- rsp->flags = cpu_to_le16(flags);
+ BT_DBG("type 0x%4.4x", type);
- return ptr - data;
+ if (type == L2CAP_IT_FEAT_MASK) {
+ u8 buf[8];
+ u32 feat_mask = l2cap_feat_mask;
+ struct l2cap_info_rsp *rsp = (struct l2cap_info_rsp *) buf;
+ rsp->type = cpu_to_le16(L2CAP_IT_FEAT_MASK);
+ rsp->result = cpu_to_le16(L2CAP_IR_SUCCESS);
+ if (enable_ertm)
+ feat_mask |= L2CAP_FEAT_ERTM | L2CAP_FEAT_STREAMING
+ | L2CAP_FEAT_FCS;
+ put_unaligned_le32(feat_mask, rsp->data);
+ l2cap_send_cmd(conn, cmd->ident,
+ L2CAP_INFO_RSP, sizeof(buf), buf);
+ } else if (type == L2CAP_IT_FIXED_CHAN) {
+ u8 buf[12];
+ struct l2cap_info_rsp *rsp = (struct l2cap_info_rsp *) buf;
+ rsp->type = cpu_to_le16(L2CAP_IT_FIXED_CHAN);
+ rsp->result = cpu_to_le16(L2CAP_IR_SUCCESS);
+ memcpy(buf + 4, l2cap_fixed_chan, 8);
+ l2cap_send_cmd(conn, cmd->ident,
+ L2CAP_INFO_RSP, sizeof(buf), buf);
+ } else {
+ struct l2cap_info_rsp rsp;
+ rsp.type = cpu_to_le16(type);
+ rsp.result = cpu_to_le16(L2CAP_IR_NOTSUPP);
+ l2cap_send_cmd(conn, cmd->ident,
+ L2CAP_INFO_RSP, sizeof(rsp), &rsp);
+ }
+
+ return 0;
}
-static inline int l2cap_command_rej(struct l2cap_conn *conn, struct l2cap_cmd_hdr *cmd, u8 *data)
+static inline int l2cap_information_rsp(struct l2cap_conn *conn, struct l2cap_cmd_hdr *cmd, u8 *data)
{
- struct l2cap_cmd_rej *rej = (struct l2cap_cmd_rej *) data;
+ struct l2cap_info_rsp *rsp = (struct l2cap_info_rsp *) data;
+ u16 type, result;
- if (rej->reason != 0x0000)
- return 0;
+ type = __le16_to_cpu(rsp->type);
+ result = __le16_to_cpu(rsp->result);
- if ((conn->info_state & L2CAP_INFO_FEAT_MASK_REQ_SENT) &&
- cmd->ident == conn->info_ident) {
- del_timer(&conn->info_timer);
+ BT_DBG("type 0x%4.4x result 0x%2.2x", type, result);
+
+ del_timer(&conn->info_timer);
+
+ if (type == L2CAP_IT_FEAT_MASK) {
+ conn->feat_mask = get_unaligned_le32(rsp->data);
+
+ if (conn->feat_mask & L2CAP_FEAT_FIXED_CHAN) {
+ struct l2cap_info_req req;
+ req.type = cpu_to_le16(L2CAP_IT_FIXED_CHAN);
+
+ conn->info_ident = l2cap_get_ident(conn);
+
+ l2cap_send_cmd(conn, conn->info_ident,
+ L2CAP_INFO_REQ, sizeof(req), &req);
+ } else {
+ conn->info_state |= L2CAP_INFO_FEAT_MASK_REQ_DONE;
+ conn->info_ident = 0;
+ l2cap_conn_start(conn);
+ }
+ } else if (type == L2CAP_IT_FIXED_CHAN) {
conn->info_state |= L2CAP_INFO_FEAT_MASK_REQ_DONE;
conn->info_ident = 0;
return 0;
}
-static inline int l2cap_connect_req(struct l2cap_conn *conn, struct l2cap_cmd_hdr *cmd, u8 *data)
+static inline void l2cap_sig_channel(struct l2cap_conn *conn, struct sk_buff *skb)
{
- struct l2cap_chan_list *list = &conn->chan_list;
- struct l2cap_conn_req *req = (struct l2cap_conn_req *) data;
- struct l2cap_conn_rsp rsp;
- struct sock *sk, *parent;
- int result, status = L2CAP_CS_NO_INFO;
+ u8 *data = skb->data;
+ int len = skb->len;
+ struct l2cap_cmd_hdr cmd;
+ int err = 0;
- u16 dcid = 0, scid = __le16_to_cpu(req->scid);
- __le16 psm = req->psm;
+ l2cap_raw_recv(conn, skb);
- BT_DBG("psm 0x%2.2x scid 0x%4.4x", psm, scid);
+ while (len >= L2CAP_CMD_HDR_SIZE) {
+ u16 cmd_len;
+ memcpy(&cmd, data, L2CAP_CMD_HDR_SIZE);
+ data += L2CAP_CMD_HDR_SIZE;
+ len -= L2CAP_CMD_HDR_SIZE;
- /* Check if we have socket listening on psm */
- parent = l2cap_get_sock_by_psm(BT_LISTEN, psm, conn->src);
- if (!parent) {
- result = L2CAP_CR_BAD_PSM;
- goto sendresp;
- }
+ cmd_len = le16_to_cpu(cmd.len);
- /* Check if the ACL is secure enough (if not SDP) */
- if (psm != cpu_to_le16(0x0001) &&
- !hci_conn_check_link_mode(conn->hcon)) {
- conn->disc_reason = 0x05;
- result = L2CAP_CR_SEC_BLOCK;
- goto response;
- }
+ BT_DBG("code 0x%2.2x len %d id 0x%2.2x", cmd.code, cmd_len, cmd.ident);
- result = L2CAP_CR_NO_MEM;
+ if (cmd_len > len || !cmd.ident) {
+ BT_DBG("corrupted command");
+ break;
+ }
- /* Check for backlog size */
- if (sk_acceptq_is_full(parent)) {
- BT_DBG("backlog full %d", parent->sk_ack_backlog);
- goto response;
- }
+ switch (cmd.code) {
+ case L2CAP_COMMAND_REJ:
+ l2cap_command_rej(conn, &cmd, data);
+ break;
- sk = l2cap_sock_alloc(sock_net(parent), NULL, BTPROTO_L2CAP, GFP_ATOMIC);
- if (!sk)
- goto response;
+ case L2CAP_CONN_REQ:
+ err = l2cap_connect_req(conn, &cmd, data);
+ break;
- write_lock_bh(&list->lock);
+ case L2CAP_CONN_RSP:
+ err = l2cap_connect_rsp(conn, &cmd, data);
+ break;
- /* Check if we already have channel with that dcid */
- if (__l2cap_get_chan_by_dcid(list, scid)) {
- write_unlock_bh(&list->lock);
- sock_set_flag(sk, SOCK_ZAPPED);
- l2cap_sock_kill(sk);
- goto response;
- }
+ case L2CAP_CONF_REQ:
+ err = l2cap_config_req(conn, &cmd, cmd_len, data);
+ break;
- hci_conn_hold(conn->hcon);
+ case L2CAP_CONF_RSP:
+ err = l2cap_config_rsp(conn, &cmd, data);
+ break;
- l2cap_sock_init(sk, parent);
- bacpy(&bt_sk(sk)->src, conn->src);
- bacpy(&bt_sk(sk)->dst, conn->dst);
- l2cap_pi(sk)->psm = psm;
- l2cap_pi(sk)->dcid = scid;
+ case L2CAP_DISCONN_REQ:
+ err = l2cap_disconnect_req(conn, &cmd, data);
+ break;
+
+ case L2CAP_DISCONN_RSP:
+ err = l2cap_disconnect_rsp(conn, &cmd, data);
+ break;
- __l2cap_chan_add(conn, sk, parent);
- dcid = l2cap_pi(sk)->scid;
+ case L2CAP_ECHO_REQ:
+ l2cap_send_cmd(conn, cmd.ident, L2CAP_ECHO_RSP, cmd_len, data);
+ break;
- l2cap_sock_set_timer(sk, sk->sk_sndtimeo);
+ case L2CAP_ECHO_RSP:
+ break;
- l2cap_pi(sk)->ident = cmd->ident;
+ case L2CAP_INFO_REQ:
+ err = l2cap_information_req(conn, &cmd, data);
+ break;
- if (conn->info_state & L2CAP_INFO_FEAT_MASK_REQ_DONE) {
- if (l2cap_check_security(sk)) {
- if (bt_sk(sk)->defer_setup) {
- sk->sk_state = BT_CONNECT2;
- result = L2CAP_CR_PEND;
- status = L2CAP_CS_AUTHOR_PEND;
- parent->sk_data_ready(parent, 0);
- } else {
- sk->sk_state = BT_CONFIG;
- result = L2CAP_CR_SUCCESS;
- status = L2CAP_CS_NO_INFO;
- }
- } else {
- sk->sk_state = BT_CONNECT2;
- result = L2CAP_CR_PEND;
- status = L2CAP_CS_AUTHEN_PEND;
+ case L2CAP_INFO_RSP:
+ err = l2cap_information_rsp(conn, &cmd, data);
+ break;
+
+ default:
+ BT_ERR("Unknown signaling command 0x%2.2x", cmd.code);
+ err = -EINVAL;
+ break;
}
- } else {
- sk->sk_state = BT_CONNECT2;
- result = L2CAP_CR_PEND;
- status = L2CAP_CS_NO_INFO;
- }
- write_unlock_bh(&list->lock);
+ if (err) {
+ struct l2cap_cmd_rej rej;
+ BT_DBG("error %d", err);
-response:
- bh_unlock_sock(parent);
+ /* FIXME: Map err to a valid reason */
+ rej.reason = cpu_to_le16(0);
+ l2cap_send_cmd(conn, cmd.ident, L2CAP_COMMAND_REJ, sizeof(rej), &rej);
+ }
-sendresp:
- rsp.scid = cpu_to_le16(scid);
- rsp.dcid = cpu_to_le16(dcid);
- rsp.result = cpu_to_le16(result);
- rsp.status = cpu_to_le16(status);
- l2cap_send_cmd(conn, cmd->ident, L2CAP_CONN_RSP, sizeof(rsp), &rsp);
+ data += cmd_len;
+ len -= cmd_len;
+ }
- if (result == L2CAP_CR_PEND && status == L2CAP_CS_NO_INFO) {
- struct l2cap_info_req info;
- info.type = cpu_to_le16(L2CAP_IT_FEAT_MASK);
+ kfree_skb(skb);
+}
- conn->info_state |= L2CAP_INFO_FEAT_MASK_REQ_SENT;
- conn->info_ident = l2cap_get_ident(conn);
+static int l2cap_check_fcs(struct l2cap_pinfo *pi, struct sk_buff *skb)
+{
+ u16 our_fcs, rcv_fcs;
+ int hdr_size = L2CAP_HDR_SIZE + 2;
- mod_timer(&conn->info_timer, jiffies +
- msecs_to_jiffies(L2CAP_INFO_TIMEOUT));
+ if (pi->fcs == L2CAP_FCS_CRC16) {
+ skb_trim(skb, skb->len - 2);
+ rcv_fcs = get_unaligned_le16(skb->data + skb->len);
+ our_fcs = crc16(0, skb->data - hdr_size, skb->len + hdr_size);
- l2cap_send_cmd(conn, conn->info_ident,
- L2CAP_INFO_REQ, sizeof(info), &info);
+ if (our_fcs != rcv_fcs)
+ return -EINVAL;
}
-
return 0;
}
-static inline int l2cap_connect_rsp(struct l2cap_conn *conn, struct l2cap_cmd_hdr *cmd, u8 *data)
+static inline void l2cap_send_i_or_rr_or_rnr(struct sock *sk)
{
- struct l2cap_conn_rsp *rsp = (struct l2cap_conn_rsp *) data;
- u16 scid, dcid, result, status;
- struct sock *sk;
- u8 req[128];
+ struct l2cap_pinfo *pi = l2cap_pi(sk);
+ u16 control = 0;
- scid = __le16_to_cpu(rsp->scid);
- dcid = __le16_to_cpu(rsp->dcid);
- result = __le16_to_cpu(rsp->result);
- status = __le16_to_cpu(rsp->status);
+ pi->frames_sent = 0;
+ pi->conn_state |= L2CAP_CONN_SEND_FBIT;
- BT_DBG("dcid 0x%4.4x scid 0x%4.4x result 0x%2.2x status 0x%2.2x", dcid, scid, result, status);
+ control |= pi->buffer_seq << L2CAP_CTRL_REQSEQ_SHIFT;
- if (scid) {
- sk = l2cap_get_chan_by_scid(&conn->chan_list, scid);
- if (!sk)
- return 0;
- } else {
- sk = l2cap_get_chan_by_ident(&conn->chan_list, cmd->ident);
- if (!sk)
- return 0;
+ if (pi->conn_state & L2CAP_CONN_LOCAL_BUSY) {
+ control |= L2CAP_SUPER_RCV_NOT_READY | L2CAP_CTRL_FINAL;
+ l2cap_send_sframe(pi, control);
+ pi->conn_state &= ~L2CAP_CONN_SEND_FBIT;
}
- 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_pi(sk)->conf_state &= ~L2CAP_CONF_CONNECT_PEND;
-
- l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ,
- l2cap_build_conf_req(sk, req), req);
- break;
+ if (pi->conn_state & L2CAP_CONN_REMOTE_BUSY && pi->unacked_frames > 0)
+ __mod_retrans_timer();
- case L2CAP_CR_PEND:
- l2cap_pi(sk)->conf_state |= L2CAP_CONF_CONNECT_PEND;
- break;
+ l2cap_ertm_send(sk);
- default:
- l2cap_chan_del(sk, ECONNREFUSED);
- break;
+ if (!(pi->conn_state & L2CAP_CONN_LOCAL_BUSY) &&
+ pi->frames_sent == 0) {
+ control |= L2CAP_SUPER_RCV_READY;
+ l2cap_send_sframe(pi, control);
}
-
- bh_unlock_sock(sk);
- return 0;
}
-static inline int l2cap_config_req(struct l2cap_conn *conn, struct l2cap_cmd_hdr *cmd, u16 cmd_len, u8 *data)
+static void l2cap_add_to_srej_queue(struct sock *sk, struct sk_buff *skb, u8 tx_seq, u8 sar)
{
- struct l2cap_conf_req *req = (struct l2cap_conf_req *) data;
- u16 dcid, flags;
- u8 rsp[64];
- struct sock *sk;
- int len;
+ struct sk_buff *next_skb;
- dcid = __le16_to_cpu(req->dcid);
- flags = __le16_to_cpu(req->flags);
+ bt_cb(skb)->tx_seq = tx_seq;
+ bt_cb(skb)->sar = sar;
- BT_DBG("dcid 0x%4.4x flags 0x%2.2x", dcid, flags);
+ next_skb = skb_peek(SREJ_QUEUE(sk));
+ if (!next_skb) {
+ __skb_queue_tail(SREJ_QUEUE(sk), skb);
+ return;
+ }
- sk = l2cap_get_chan_by_scid(&conn->chan_list, dcid);
- if (!sk)
- return -ENOENT;
+ do {
+ if (bt_cb(next_skb)->tx_seq > tx_seq) {
+ __skb_queue_before(SREJ_QUEUE(sk), next_skb, skb);
+ return;
+ }
- if (sk->sk_state == BT_DISCONN)
- goto unlock;
+ if (skb_queue_is_last(SREJ_QUEUE(sk), next_skb))
+ break;
- /* Reject if config buffer is too small. */
- len = cmd_len - sizeof(*req);
- if (l2cap_pi(sk)->conf_len + len > sizeof(l2cap_pi(sk)->conf_req)) {
- l2cap_send_cmd(conn, cmd->ident, L2CAP_CONF_RSP,
- l2cap_build_conf_rsp(sk, rsp,
- L2CAP_CONF_REJECT, flags), rsp);
- goto unlock;
- }
+ } while((next_skb = skb_queue_next(SREJ_QUEUE(sk), next_skb)));
- /* Store config. */
- memcpy(l2cap_pi(sk)->conf_req + l2cap_pi(sk)->conf_len, req->data, len);
- l2cap_pi(sk)->conf_len += len;
+ __skb_queue_tail(SREJ_QUEUE(sk), skb);
+}
- if (flags & 0x0001) {
- /* Incomplete config. Send empty response. */
- l2cap_send_cmd(conn, cmd->ident, L2CAP_CONF_RSP,
- l2cap_build_conf_rsp(sk, rsp,
- L2CAP_CONF_SUCCESS, 0x0001), rsp);
- goto unlock;
- }
+static int l2cap_sar_reassembly_sdu(struct sock *sk, struct sk_buff *skb, u16 control)
+{
+ struct l2cap_pinfo *pi = l2cap_pi(sk);
+ struct sk_buff *_skb;
+ int err = -EINVAL;
- /* Complete config. */
- len = l2cap_parse_conf_req(sk, rsp);
- if (len < 0)
- goto unlock;
+ switch (control & L2CAP_CTRL_SAR) {
+ case L2CAP_SDU_UNSEGMENTED:
+ if (pi->conn_state & L2CAP_CONN_SAR_SDU) {
+ kfree_skb(pi->sdu);
+ break;
+ }
- l2cap_send_cmd(conn, cmd->ident, L2CAP_CONF_RSP, len, rsp);
+ err = sock_queue_rcv_skb(sk, skb);
+ if (!err)
+ return 0;
- /* Reset config buffer. */
- l2cap_pi(sk)->conf_len = 0;
+ break;
- if (!(l2cap_pi(sk)->conf_state & L2CAP_CONF_OUTPUT_DONE))
- goto unlock;
+ case L2CAP_SDU_START:
+ if (pi->conn_state & L2CAP_CONN_SAR_SDU) {
+ kfree_skb(pi->sdu);
+ break;
+ }
- if (l2cap_pi(sk)->conf_state & L2CAP_CONF_INPUT_DONE) {
- sk->sk_state = BT_CONNECTED;
- l2cap_chan_ready(sk);
- goto unlock;
- }
+ pi->sdu_len = get_unaligned_le16(skb->data);
+ skb_pull(skb, 2);
- if (!(l2cap_pi(sk)->conf_state & L2CAP_CONF_REQ_SENT)) {
- u8 buf[64];
- l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ,
- l2cap_build_conf_req(sk, buf), buf);
- }
+ if (pi->sdu_len > pi->imtu) {
+ err = -EMSGSIZE;
+ break;
+ }
-unlock:
- bh_unlock_sock(sk);
- return 0;
-}
+ pi->sdu = bt_skb_alloc(pi->sdu_len, GFP_ATOMIC);
+ if (!pi->sdu) {
+ err = -ENOMEM;
+ break;
+ }
-static inline int l2cap_config_rsp(struct l2cap_conn *conn, struct l2cap_cmd_hdr *cmd, u8 *data)
-{
- struct l2cap_conf_rsp *rsp = (struct l2cap_conf_rsp *)data;
- u16 scid, flags, result;
- struct sock *sk;
+ memcpy(skb_put(pi->sdu, skb->len), skb->data, skb->len);
- scid = __le16_to_cpu(rsp->scid);
- flags = __le16_to_cpu(rsp->flags);
- result = __le16_to_cpu(rsp->result);
+ pi->conn_state |= L2CAP_CONN_SAR_SDU;
+ pi->partial_sdu_len = skb->len;
+ err = 0;
+ break;
- BT_DBG("scid 0x%4.4x flags 0x%2.2x result 0x%2.2x",
- scid, flags, result);
+ case L2CAP_SDU_CONTINUE:
+ if (!(pi->conn_state & L2CAP_CONN_SAR_SDU))
+ break;
- sk = l2cap_get_chan_by_scid(&conn->chan_list, scid);
- if (!sk)
- return 0;
+ memcpy(skb_put(pi->sdu, skb->len), skb->data, skb->len);
+
+ pi->partial_sdu_len += skb->len;
+ if (pi->partial_sdu_len > pi->sdu_len)
+ kfree_skb(pi->sdu);
+ else
+ err = 0;
- switch (result) {
- case L2CAP_CONF_SUCCESS:
break;
- case L2CAP_CONF_UNACCEPT:
- if (++l2cap_pi(sk)->conf_retry < L2CAP_CONF_MAX_RETRIES) {
- char req[128];
- /* It does not make sense to adjust L2CAP parameters
- * that are currently defined in the spec. We simply
- * 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_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ,
- l2cap_build_conf_req(sk, req), req);
- goto done;
- }
+ case L2CAP_SDU_END:
+ if (!(pi->conn_state & L2CAP_CONN_SAR_SDU))
+ break;
- default:
- sk->sk_state = BT_DISCONN;
- sk->sk_err = ECONNRESET;
- l2cap_sock_set_timer(sk, HZ * 5);
- {
- 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_cmd(conn, l2cap_get_ident(conn),
- L2CAP_DISCONN_REQ, sizeof(req), &req);
- }
- goto done;
- }
+ memcpy(skb_put(pi->sdu, skb->len), skb->data, skb->len);
- if (flags & 0x01)
- goto done;
+ pi->conn_state &= ~L2CAP_CONN_SAR_SDU;
+ pi->partial_sdu_len += skb->len;
- l2cap_pi(sk)->conf_state |= L2CAP_CONF_INPUT_DONE;
+ if (pi->partial_sdu_len > pi->imtu)
+ goto drop;
- if (l2cap_pi(sk)->conf_state & L2CAP_CONF_OUTPUT_DONE) {
- sk->sk_state = BT_CONNECTED;
- l2cap_chan_ready(sk);
+ if (pi->partial_sdu_len == pi->sdu_len) {
+ _skb = skb_clone(pi->sdu, GFP_ATOMIC);
+ err = sock_queue_rcv_skb(sk, _skb);
+ if (err < 0)
+ kfree_skb(_skb);
+ }
+ err = 0;
+
+drop:
+ kfree_skb(pi->sdu);
+ break;
}
-done:
- bh_unlock_sock(sk);
- return 0;
+ kfree_skb(skb);
+ return err;
}
-static inline int l2cap_disconnect_req(struct l2cap_conn *conn, struct l2cap_cmd_hdr *cmd, u8 *data)
+static void l2cap_check_srej_gap(struct sock *sk, u8 tx_seq)
{
- struct l2cap_disconn_req *req = (struct l2cap_disconn_req *) data;
- struct l2cap_disconn_rsp rsp;
- u16 dcid, scid;
- struct sock *sk;
+ struct sk_buff *skb;
+ u16 control;
- scid = __le16_to_cpu(req->scid);
- dcid = __le16_to_cpu(req->dcid);
+ while((skb = skb_peek(SREJ_QUEUE(sk)))) {
+ if (bt_cb(skb)->tx_seq != tx_seq)
+ break;
- BT_DBG("scid 0x%4.4x dcid 0x%4.4x", scid, dcid);
+ skb = skb_dequeue(SREJ_QUEUE(sk));
+ control = bt_cb(skb)->sar << L2CAP_CTRL_SAR_SHIFT;
+ l2cap_sar_reassembly_sdu(sk, skb, control);
+ l2cap_pi(sk)->buffer_seq_srej =
+ (l2cap_pi(sk)->buffer_seq_srej + 1) % 64;
+ tx_seq++;
+ }
+}
- sk = l2cap_get_chan_by_scid(&conn->chan_list, dcid);
- if (!sk)
- return 0;
+static void l2cap_resend_srejframe(struct sock *sk, u8 tx_seq)
+{
+ struct l2cap_pinfo *pi = l2cap_pi(sk);
+ struct srej_list *l, *tmp;
+ u16 control;
- rsp.dcid = cpu_to_le16(l2cap_pi(sk)->scid);
- rsp.scid = cpu_to_le16(l2cap_pi(sk)->dcid);
- l2cap_send_cmd(conn, cmd->ident, L2CAP_DISCONN_RSP, sizeof(rsp), &rsp);
+ list_for_each_entry_safe(l,tmp, SREJ_LIST(sk), list) {
+ if (l->tx_seq == tx_seq) {
+ list_del(&l->list);
+ kfree(l);
+ return;
+ }
+ control = L2CAP_SUPER_SELECT_REJECT;
+ control |= l->tx_seq << L2CAP_CTRL_REQSEQ_SHIFT;
+ l2cap_send_sframe(pi, control);
+ list_del(&l->list);
+ list_add_tail(&l->list, SREJ_LIST(sk));
+ }
+}
- sk->sk_shutdown = SHUTDOWN_MASK;
+static void l2cap_send_srejframe(struct sock *sk, u8 tx_seq)
+{
+ struct l2cap_pinfo *pi = l2cap_pi(sk);
+ struct srej_list *new;
+ u16 control;
- l2cap_chan_del(sk, ECONNRESET);
- bh_unlock_sock(sk);
+ while (tx_seq != pi->expected_tx_seq) {
+ control = L2CAP_SUPER_SELECT_REJECT;
+ control |= pi->expected_tx_seq << L2CAP_CTRL_REQSEQ_SHIFT;
+ l2cap_send_sframe(pi, control);
- l2cap_sock_kill(sk);
- return 0;
+ new = kzalloc(sizeof(struct srej_list), GFP_ATOMIC);
+ new->tx_seq = pi->expected_tx_seq++;
+ list_add_tail(&new->list, SREJ_LIST(sk));
+ }
+ pi->expected_tx_seq++;
}
-static inline int l2cap_disconnect_rsp(struct l2cap_conn *conn, struct l2cap_cmd_hdr *cmd, u8 *data)
+static inline int l2cap_data_channel_iframe(struct sock *sk, u16 rx_control, struct sk_buff *skb)
{
- struct l2cap_disconn_rsp *rsp = (struct l2cap_disconn_rsp *) data;
- u16 dcid, scid;
- struct sock *sk;
+ struct l2cap_pinfo *pi = l2cap_pi(sk);
+ u8 tx_seq = __get_txseq(rx_control);
+ u8 req_seq = __get_reqseq(rx_control);
+ u8 sar = rx_control >> L2CAP_CTRL_SAR_SHIFT;
+ int num_to_ack = (pi->tx_win/6) + 1;
+ int err = 0;
- scid = __le16_to_cpu(rsp->scid);
- dcid = __le16_to_cpu(rsp->dcid);
+ BT_DBG("sk %p rx_control 0x%4.4x len %d", sk, rx_control, skb->len);
- BT_DBG("dcid 0x%4.4x scid 0x%4.4x", dcid, scid);
+ if (L2CAP_CTRL_FINAL & rx_control) {
+ del_timer(&pi->monitor_timer);
+ if (pi->unacked_frames > 0)
+ __mod_retrans_timer();
+ pi->conn_state &= ~L2CAP_CONN_WAIT_F;
+ }
- sk = l2cap_get_chan_by_scid(&conn->chan_list, scid);
- if (!sk)
- return 0;
+ pi->expected_ack_seq = req_seq;
+ l2cap_drop_acked_frames(sk);
- l2cap_chan_del(sk, 0);
- bh_unlock_sock(sk);
+ if (tx_seq == pi->expected_tx_seq)
+ goto expected;
- l2cap_sock_kill(sk);
- return 0;
-}
+ if (pi->conn_state & L2CAP_CONN_SREJ_SENT) {
+ struct srej_list *first;
-static inline int l2cap_information_req(struct l2cap_conn *conn, struct l2cap_cmd_hdr *cmd, u8 *data)
-{
- struct l2cap_info_req *req = (struct l2cap_info_req *) data;
- u16 type;
+ first = list_first_entry(SREJ_LIST(sk),
+ struct srej_list, list);
+ if (tx_seq == first->tx_seq) {
+ l2cap_add_to_srej_queue(sk, skb, tx_seq, sar);
+ l2cap_check_srej_gap(sk, tx_seq);
- type = __le16_to_cpu(req->type);
+ list_del(&first->list);
+ kfree(first);
- BT_DBG("type 0x%4.4x", type);
+ if (list_empty(SREJ_LIST(sk))) {
+ pi->buffer_seq = pi->buffer_seq_srej;
+ pi->conn_state &= ~L2CAP_CONN_SREJ_SENT;
+ l2cap_send_ack(pi);
+ }
+ } else {
+ struct srej_list *l;
+ l2cap_add_to_srej_queue(sk, skb, tx_seq, sar);
- if (type == L2CAP_IT_FEAT_MASK) {
- u8 buf[8];
- u32 feat_mask = l2cap_feat_mask;
- struct l2cap_info_rsp *rsp = (struct l2cap_info_rsp *) buf;
- rsp->type = cpu_to_le16(L2CAP_IT_FEAT_MASK);
- rsp->result = cpu_to_le16(L2CAP_IR_SUCCESS);
- if (enable_ertm)
- feat_mask |= L2CAP_FEAT_ERTM;
- put_unaligned(cpu_to_le32(feat_mask), (__le32 *) rsp->data);
- l2cap_send_cmd(conn, cmd->ident,
- L2CAP_INFO_RSP, sizeof(buf), buf);
- } else if (type == L2CAP_IT_FIXED_CHAN) {
- u8 buf[12];
- struct l2cap_info_rsp *rsp = (struct l2cap_info_rsp *) buf;
- rsp->type = cpu_to_le16(L2CAP_IT_FIXED_CHAN);
- rsp->result = cpu_to_le16(L2CAP_IR_SUCCESS);
- memcpy(buf + 4, l2cap_fixed_chan, 8);
- l2cap_send_cmd(conn, cmd->ident,
- L2CAP_INFO_RSP, sizeof(buf), buf);
+ list_for_each_entry(l, SREJ_LIST(sk), list) {
+ if (l->tx_seq == tx_seq) {
+ l2cap_resend_srejframe(sk, tx_seq);
+ return 0;
+ }
+ }
+ l2cap_send_srejframe(sk, tx_seq);
+ }
} else {
- struct l2cap_info_rsp rsp;
- rsp.type = cpu_to_le16(type);
- rsp.result = cpu_to_le16(L2CAP_IR_NOTSUPP);
- l2cap_send_cmd(conn, cmd->ident,
- L2CAP_INFO_RSP, sizeof(rsp), &rsp);
- }
+ pi->conn_state |= L2CAP_CONN_SREJ_SENT;
- return 0;
-}
+ INIT_LIST_HEAD(SREJ_LIST(sk));
+ pi->buffer_seq_srej = pi->buffer_seq;
-static inline int l2cap_information_rsp(struct l2cap_conn *conn, struct l2cap_cmd_hdr *cmd, u8 *data)
-{
- struct l2cap_info_rsp *rsp = (struct l2cap_info_rsp *) data;
- u16 type, result;
+ __skb_queue_head_init(SREJ_QUEUE(sk));
+ l2cap_add_to_srej_queue(sk, skb, tx_seq, sar);
- type = __le16_to_cpu(rsp->type);
- result = __le16_to_cpu(rsp->result);
+ pi->conn_state |= L2CAP_CONN_SEND_PBIT;
- BT_DBG("type 0x%4.4x result 0x%2.2x", type, result);
+ l2cap_send_srejframe(sk, tx_seq);
+ }
+ return 0;
- del_timer(&conn->info_timer);
+expected:
+ pi->expected_tx_seq = (pi->expected_tx_seq + 1) % 64;
- if (type == L2CAP_IT_FEAT_MASK) {
- conn->feat_mask = get_unaligned_le32(rsp->data);
+ if (pi->conn_state & L2CAP_CONN_SREJ_SENT) {
+ bt_cb(skb)->tx_seq = tx_seq;
+ bt_cb(skb)->sar = sar;
+ __skb_queue_tail(SREJ_QUEUE(sk), skb);
+ return 0;
+ }
- if (conn->feat_mask & L2CAP_FEAT_FIXED_CHAN) {
- struct l2cap_info_req req;
- req.type = cpu_to_le16(L2CAP_IT_FIXED_CHAN);
+ if (rx_control & L2CAP_CTRL_FINAL) {
+ if (pi->conn_state & L2CAP_CONN_REJ_ACT)
+ pi->conn_state &= ~L2CAP_CONN_REJ_ACT;
+ else {
+ if (!skb_queue_empty(TX_QUEUE(sk)))
+ sk->sk_send_head = TX_QUEUE(sk)->next;
+ pi->next_tx_seq = pi->expected_ack_seq;
+ l2cap_ertm_send(sk);
+ }
+ }
- conn->info_ident = l2cap_get_ident(conn);
+ pi->buffer_seq = (pi->buffer_seq + 1) % 64;
- l2cap_send_cmd(conn, conn->info_ident,
- L2CAP_INFO_REQ, sizeof(req), &req);
- } else {
- conn->info_state |= L2CAP_INFO_FEAT_MASK_REQ_DONE;
- conn->info_ident = 0;
+ err = l2cap_sar_reassembly_sdu(sk, skb, rx_control);
+ if (err < 0)
+ return err;
- l2cap_conn_start(conn);
- }
- } else if (type == L2CAP_IT_FIXED_CHAN) {
- conn->info_state |= L2CAP_INFO_FEAT_MASK_REQ_DONE;
- conn->info_ident = 0;
+ __mod_ack_timer();
- l2cap_conn_start(conn);
- }
+ pi->num_acked = (pi->num_acked + 1) % num_to_ack;
+ if (pi->num_acked == num_to_ack - 1)
+ l2cap_send_ack(pi);
return 0;
}
-static inline void l2cap_sig_channel(struct l2cap_conn *conn, struct sk_buff *skb)
+static inline void l2cap_data_channel_rrframe(struct sock *sk, u16 rx_control)
{
- u8 *data = skb->data;
- int len = skb->len;
- struct l2cap_cmd_hdr cmd;
- int err = 0;
+ struct l2cap_pinfo *pi = l2cap_pi(sk);
- l2cap_raw_recv(conn, skb);
+ pi->expected_ack_seq = __get_reqseq(rx_control);
+ l2cap_drop_acked_frames(sk);
- while (len >= L2CAP_CMD_HDR_SIZE) {
- u16 cmd_len;
- memcpy(&cmd, data, L2CAP_CMD_HDR_SIZE);
- data += L2CAP_CMD_HDR_SIZE;
- len -= L2CAP_CMD_HDR_SIZE;
+ if (rx_control & L2CAP_CTRL_POLL) {
+ if (pi->conn_state & L2CAP_CONN_SREJ_SENT) {
+ if ((pi->conn_state & L2CAP_CONN_REMOTE_BUSY) &&
+ (pi->unacked_frames > 0))
+ __mod_retrans_timer();
- cmd_len = le16_to_cpu(cmd.len);
+ pi->conn_state &= ~L2CAP_CONN_REMOTE_BUSY;
+ l2cap_send_srejtail(sk);
+ } else {
+ l2cap_send_i_or_rr_or_rnr(sk);
+ pi->conn_state &= ~L2CAP_CONN_REMOTE_BUSY;
+ }
- BT_DBG("code 0x%2.2x len %d id 0x%2.2x", cmd.code, cmd_len, cmd.ident);
+ } else if (rx_control & L2CAP_CTRL_FINAL) {
+ pi->conn_state &= ~L2CAP_CONN_REMOTE_BUSY;
- if (cmd_len > len || !cmd.ident) {
- BT_DBG("corrupted command");
- break;
+ if (pi->conn_state & L2CAP_CONN_REJ_ACT)
+ pi->conn_state &= ~L2CAP_CONN_REJ_ACT;
+ else {
+ if (!skb_queue_empty(TX_QUEUE(sk)))
+ sk->sk_send_head = TX_QUEUE(sk)->next;
+ pi->next_tx_seq = pi->expected_ack_seq;
+ l2cap_ertm_send(sk);
}
- switch (cmd.code) {
- case L2CAP_COMMAND_REJ:
- l2cap_command_rej(conn, &cmd, data);
- break;
+ } else {
+ if ((pi->conn_state & L2CAP_CONN_REMOTE_BUSY) &&
+ (pi->unacked_frames > 0))
+ __mod_retrans_timer();
- case L2CAP_CONN_REQ:
- err = l2cap_connect_req(conn, &cmd, data);
- break;
+ pi->conn_state &= ~L2CAP_CONN_REMOTE_BUSY;
+ if (pi->conn_state & L2CAP_CONN_SREJ_SENT)
+ l2cap_send_ack(pi);
+ else
+ l2cap_ertm_send(sk);
+ }
+}
- case L2CAP_CONN_RSP:
- err = l2cap_connect_rsp(conn, &cmd, data);
- break;
+static inline void l2cap_data_channel_rejframe(struct sock *sk, u16 rx_control)
+{
+ struct l2cap_pinfo *pi = l2cap_pi(sk);
+ u8 tx_seq = __get_reqseq(rx_control);
- case L2CAP_CONF_REQ:
- err = l2cap_config_req(conn, &cmd, cmd_len, data);
- break;
+ pi->conn_state &= ~L2CAP_CONN_REMOTE_BUSY;
- case L2CAP_CONF_RSP:
- err = l2cap_config_rsp(conn, &cmd, data);
- break;
+ pi->expected_ack_seq = tx_seq;
+ l2cap_drop_acked_frames(sk);
- case L2CAP_DISCONN_REQ:
- err = l2cap_disconnect_req(conn, &cmd, data);
- break;
+ if (rx_control & L2CAP_CTRL_FINAL) {
+ if (pi->conn_state & L2CAP_CONN_REJ_ACT)
+ pi->conn_state &= ~L2CAP_CONN_REJ_ACT;
+ else {
+ if (!skb_queue_empty(TX_QUEUE(sk)))
+ sk->sk_send_head = TX_QUEUE(sk)->next;
+ pi->next_tx_seq = pi->expected_ack_seq;
+ l2cap_ertm_send(sk);
+ }
+ } else {
+ if (!skb_queue_empty(TX_QUEUE(sk)))
+ sk->sk_send_head = TX_QUEUE(sk)->next;
+ pi->next_tx_seq = pi->expected_ack_seq;
+ l2cap_ertm_send(sk);
+
+ if (pi->conn_state & L2CAP_CONN_WAIT_F) {
+ pi->srej_save_reqseq = tx_seq;
+ pi->conn_state |= L2CAP_CONN_REJ_ACT;
+ }
+ }
+}
+static inline void l2cap_data_channel_srejframe(struct sock *sk, u16 rx_control)
+{
+ struct l2cap_pinfo *pi = l2cap_pi(sk);
+ u8 tx_seq = __get_reqseq(rx_control);
+
+ pi->conn_state &= ~L2CAP_CONN_REMOTE_BUSY;
+
+ if (rx_control & L2CAP_CTRL_POLL) {
+ pi->expected_ack_seq = tx_seq;
+ l2cap_drop_acked_frames(sk);
+ l2cap_retransmit_frame(sk, tx_seq);
+ l2cap_ertm_send(sk);
+ if (pi->conn_state & L2CAP_CONN_WAIT_F) {
+ pi->srej_save_reqseq = tx_seq;
+ pi->conn_state |= L2CAP_CONN_SREJ_ACT;
+ }
+ } else if (rx_control & L2CAP_CTRL_FINAL) {
+ if ((pi->conn_state & L2CAP_CONN_SREJ_ACT) &&
+ pi->srej_save_reqseq == tx_seq)
+ pi->conn_state &= ~L2CAP_CONN_SREJ_ACT;
+ else
+ l2cap_retransmit_frame(sk, tx_seq);
+ } else {
+ l2cap_retransmit_frame(sk, tx_seq);
+ if (pi->conn_state & L2CAP_CONN_WAIT_F) {
+ pi->srej_save_reqseq = tx_seq;
+ pi->conn_state |= L2CAP_CONN_SREJ_ACT;
+ }
+ }
+}
- case L2CAP_DISCONN_RSP:
- err = l2cap_disconnect_rsp(conn, &cmd, data);
- break;
+static inline void l2cap_data_channel_rnrframe(struct sock *sk, u16 rx_control)
+{
+ struct l2cap_pinfo *pi = l2cap_pi(sk);
+ u8 tx_seq = __get_reqseq(rx_control);
- case L2CAP_ECHO_REQ:
- l2cap_send_cmd(conn, cmd.ident, L2CAP_ECHO_RSP, cmd_len, data);
- break;
+ pi->conn_state |= L2CAP_CONN_REMOTE_BUSY;
+ pi->expected_ack_seq = tx_seq;
+ l2cap_drop_acked_frames(sk);
- case L2CAP_ECHO_RSP:
- break;
+ if (!(pi->conn_state & L2CAP_CONN_SREJ_SENT)) {
+ del_timer(&pi->retrans_timer);
+ if (rx_control & L2CAP_CTRL_POLL) {
+ u16 control = L2CAP_CTRL_FINAL;
+ l2cap_send_rr_or_rnr(pi, control);
+ }
+ return;
+ }
- case L2CAP_INFO_REQ:
- err = l2cap_information_req(conn, &cmd, data);
- break;
+ if (rx_control & L2CAP_CTRL_POLL)
+ l2cap_send_srejtail(sk);
+ else
+ l2cap_send_sframe(pi, L2CAP_SUPER_RCV_READY);
+}
- case L2CAP_INFO_RSP:
- err = l2cap_information_rsp(conn, &cmd, data);
- break;
+static inline int l2cap_data_channel_sframe(struct sock *sk, u16 rx_control, struct sk_buff *skb)
+{
+ BT_DBG("sk %p rx_control 0x%4.4x len %d", sk, rx_control, skb->len);
- default:
- BT_ERR("Unknown signaling command 0x%2.2x", cmd.code);
- err = -EINVAL;
- break;
- }
+ if (L2CAP_CTRL_FINAL & rx_control) {
+ del_timer(&l2cap_pi(sk)->monitor_timer);
+ if (l2cap_pi(sk)->unacked_frames > 0)
+ __mod_retrans_timer();
+ l2cap_pi(sk)->conn_state &= ~L2CAP_CONN_WAIT_F;
+ }
- if (err) {
- struct l2cap_cmd_rej rej;
- BT_DBG("error %d", err);
+ switch (rx_control & L2CAP_CTRL_SUPERVISE) {
+ case L2CAP_SUPER_RCV_READY:
+ l2cap_data_channel_rrframe(sk, rx_control);
+ break;
- /* FIXME: Map err to a valid reason */
- rej.reason = cpu_to_le16(0);
- l2cap_send_cmd(conn, cmd.ident, L2CAP_COMMAND_REJ, sizeof(rej), &rej);
- }
+ case L2CAP_SUPER_REJECT:
+ l2cap_data_channel_rejframe(sk, rx_control);
+ break;
- data += cmd_len;
- len -= cmd_len;
+ case L2CAP_SUPER_SELECT_REJECT:
+ l2cap_data_channel_srejframe(sk, rx_control);
+ break;
+
+ case L2CAP_SUPER_RCV_NOT_READY:
+ l2cap_data_channel_rnrframe(sk, rx_control);
+ break;
}
kfree_skb(skb);
+ return 0;
}
static inline int l2cap_data_channel(struct l2cap_conn *conn, u16 cid, struct sk_buff *skb)
{
struct sock *sk;
+ struct l2cap_pinfo *pi;
+ u16 control, len;
+ u8 tx_seq, req_seq, next_tx_seq_offset, req_seq_offset;
sk = l2cap_get_chan_by_scid(&conn->chan_list, cid);
if (!sk) {
goto drop;
}
+ pi = l2cap_pi(sk);
+
BT_DBG("sk %p, len %d", sk, skb->len);
if (sk->sk_state != BT_CONNECTED)
goto drop;
- if (l2cap_pi(sk)->imtu < skb->len)
- goto drop;
+ switch (pi->mode) {
+ case L2CAP_MODE_BASIC:
+ /* If socket recv buffers overflows we drop data here
+ * which is *bad* because L2CAP has to be reliable.
+ * But we don't have any other choice. L2CAP doesn't
+ * provide flow control mechanism. */
- /* If socket recv buffers overflows we drop data here
- * which is *bad* because L2CAP has to be reliable.
- * But we don't have any other choice. L2CAP doesn't
- * provide flow control mechanism. */
+ if (pi->imtu < skb->len)
+ goto drop;
+
+ if (!sock_queue_rcv_skb(sk, skb))
+ goto done;
+ break;
+
+ case L2CAP_MODE_ERTM:
+ control = get_unaligned_le16(skb->data);
+ skb_pull(skb, 2);
+ len = skb->len;
+
+ if (__is_sar_start(control))
+ len -= 2;
+
+ if (pi->fcs == L2CAP_FCS_CRC16)
+ len -= 2;
+
+ /*
+ * We can just drop the corrupted I-frame here.
+ * Receiver will miss it and start proper recovery
+ * procedures and ask retransmission.
+ */
+ if (len > pi->mps)
+ goto drop;
+
+ if (l2cap_check_fcs(pi, skb))
+ goto drop;
+
+ req_seq = __get_reqseq(control);
+ req_seq_offset = (req_seq - pi->expected_ack_seq) % 64;
+ if (req_seq_offset < 0)
+ req_seq_offset += 64;
+
+ next_tx_seq_offset =
+ (pi->next_tx_seq - pi->expected_ack_seq) % 64;
+ if (next_tx_seq_offset < 0)
+ next_tx_seq_offset += 64;
+
+ /* check for invalid req-seq */
+ if (req_seq_offset > next_tx_seq_offset) {
+ l2cap_send_disconn_req(pi->conn, sk);
+ goto drop;
+ }
+
+ if (__is_iframe(control)) {
+ if (len < 4)
+ goto drop;
+
+ l2cap_data_channel_iframe(sk, control, skb);
+ } else {
+ if (len != 0)
+ goto drop;
+
+ l2cap_data_channel_sframe(sk, control, skb);
+ }
+
+ goto done;
+
+ case L2CAP_MODE_STREAMING:
+ control = get_unaligned_le16(skb->data);
+ skb_pull(skb, 2);
+ len = skb->len;
+
+ if (__is_sar_start(control))
+ len -= 2;
+
+ if (pi->fcs == L2CAP_FCS_CRC16)
+ len -= 2;
+
+ if (len > pi->mps || len < 4 || __is_sframe(control))
+ goto drop;
+
+ if (l2cap_check_fcs(pi, skb))
+ goto drop;
+
+ tx_seq = __get_txseq(control);
+
+ if (pi->expected_tx_seq == tx_seq)
+ pi->expected_tx_seq = (pi->expected_tx_seq + 1) % 64;
+ else
+ pi->expected_tx_seq = (tx_seq + 1) % 64;
+
+ l2cap_sar_reassembly_sdu(sk, skb, control);
- if (!sock_queue_rcv_skb(sk, skb))
goto done;
+ default:
+ BT_DBG("sk %p: bad mode 0x%2.2x", sk, pi->mode);
+ break;
+ }
+
drop:
kfree_skb(skb);
cid = __le16_to_cpu(lh->cid);
len = __le16_to_cpu(lh->len);
+ if (len != skb->len) {
+ kfree_skb(skb);
+ return;
+ }
+
BT_DBG("len %d, cid 0x%4.4x", len, cid);
switch (cid) {
break;
case L2CAP_CID_CONN_LESS:
- psm = get_unaligned((__le16 *) skb->data);
+ psm = get_unaligned_le16(skb->data);
skb_pull(skb, 2);
l2cap_conless_channel(conn, psm, skb);
break;
static inline void l2cap_check_encryption(struct sock *sk, u8 encrypt)
{
- if (sk->sk_type != SOCK_SEQPACKET)
+ if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_STREAM)
return;
if (encrypt == 0x00) {
return 0;
}
-static ssize_t l2cap_sysfs_show(struct class *dev, char *buf)
+static int l2cap_debugfs_show(struct seq_file *f, void *p)
{
struct sock *sk;
struct hlist_node *node;
- char *str = buf;
read_lock_bh(&l2cap_sk_list.lock);
sk_for_each(sk, node, &l2cap_sk_list.head) {
struct l2cap_pinfo *pi = l2cap_pi(sk);
- str += sprintf(str, "%s %s %d %d 0x%4.4x 0x%4.4x %d %d %d\n",
- batostr(&bt_sk(sk)->src), batostr(&bt_sk(sk)->dst),
- sk->sk_state, __le16_to_cpu(pi->psm), pi->scid,
- pi->dcid, pi->imtu, pi->omtu, pi->sec_level);
+ seq_printf(f, "%s %s %d %d 0x%4.4x 0x%4.4x %d %d %d\n",
+ batostr(&bt_sk(sk)->src),
+ batostr(&bt_sk(sk)->dst),
+ sk->sk_state, __le16_to_cpu(pi->psm),
+ pi->scid, pi->dcid,
+ pi->imtu, pi->omtu, pi->sec_level);
}
read_unlock_bh(&l2cap_sk_list.lock);
- return str - buf;
+ return 0;
+}
+
+static int l2cap_debugfs_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, l2cap_debugfs_show, inode->i_private);
}
-static CLASS_ATTR(l2cap, S_IRUGO, l2cap_sysfs_show, NULL);
+static const struct file_operations l2cap_debugfs_fops = {
+ .open = l2cap_debugfs_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static struct dentry *l2cap_debugfs;
static const struct proto_ops l2cap_sock_ops = {
.family = PF_BLUETOOTH,
.getsockopt = l2cap_sock_getsockopt
};
-static struct net_proto_family l2cap_sock_family_ops = {
+static const struct net_proto_family l2cap_sock_family_ops = {
.family = PF_BLUETOOTH,
.owner = THIS_MODULE,
.create = l2cap_sock_create,
goto error;
}
- if (class_create_file(bt_class, &class_attr_l2cap) < 0)
- BT_ERR("Failed to create L2CAP info file");
+ if (bt_debugfs) {
+ l2cap_debugfs = debugfs_create_file("l2cap", 0444,
+ bt_debugfs, NULL, &l2cap_debugfs_fops);
+ if (!l2cap_debugfs)
+ BT_ERR("Failed to create L2CAP debug file");
+ }
BT_INFO("L2CAP ver %s", VERSION);
BT_INFO("L2CAP socket layer initialized");
static void __exit l2cap_exit(void)
{
- class_remove_file(bt_class, &class_attr_l2cap);
+ debugfs_remove(l2cap_debugfs);
if (bt_sock_unregister(BTPROTO_L2CAP) < 0)
BT_ERR("L2CAP socket unregistration failed");
module_param(enable_ertm, bool, 0644);
MODULE_PARM_DESC(enable_ertm, "Enable enhanced retransmission mode");
+module_param(max_transmit, uint, 0644);
+MODULE_PARM_DESC(max_transmit, "Max transmit value (default = 3)");
+
+module_param(tx_window, uint, 0644);
+MODULE_PARM_DESC(tx_window, "Transmission window size value (default = 63)");
+
MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
MODULE_DESCRIPTION("Bluetooth L2CAP ver " VERSION);
MODULE_VERSION(VERSION);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff