diff options
author | John W. Linville <linville@tuxdriver.com> | 2011-04-19 19:34:48 (GMT) |
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committer | John W. Linville <linville@tuxdriver.com> | 2011-04-19 19:34:48 (GMT) |
commit | bb411b4db2767cfd4a99b3328da843ce4ea1596a (patch) | |
tree | 8b03d033476d9bb4abbff4f214a1b942081828e9 /net | |
parent | 44c866a0a57b08b7090be24ccb33679ed1d4f476 (diff) | |
parent | 26954c7f26068b6ced108806fdd39aee5cd54e6f (diff) | |
download | linux-fsl-qoriq-bb411b4db2767cfd4a99b3328da843ce4ea1596a.tar.xz |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/padovan/bluetooth-next-2.6
Diffstat (limited to 'net')
-rw-r--r-- | net/bluetooth/hci_event.c | 4 | ||||
-rw-r--r-- | net/bluetooth/l2cap_core.c | 1344 | ||||
-rw-r--r-- | net/bluetooth/l2cap_sock.c | 72 |
3 files changed, 754 insertions, 666 deletions
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c index 7a3398d..c7eb073 100644 --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -2497,6 +2497,9 @@ static inline void hci_remote_oob_data_request_evt(struct hci_dev *hdev, hci_dev_lock(hdev); + if (!test_bit(HCI_MGMT, &hdev->flags)) + goto unlock; + data = hci_find_remote_oob_data(hdev, &ev->bdaddr); if (data) { struct hci_cp_remote_oob_data_reply cp; @@ -2515,6 +2518,7 @@ static inline void hci_remote_oob_data_request_evt(struct hci_dev *hdev, &cp); } +unlock: hci_dev_unlock(hdev); } diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c index c3cebed..d47de2b 100644 --- a/net/bluetooth/l2cap_core.c +++ b/net/bluetooth/l2cap_core.c @@ -70,108 +70,101 @@ static void l2cap_busy_work(struct work_struct *work); static struct sk_buff *l2cap_build_cmd(struct l2cap_conn *conn, u8 code, u8 ident, u16 dlen, void *data); +static int l2cap_build_conf_req(struct l2cap_chan *chan, void *data); static int l2cap_ertm_data_rcv(struct sock *sk, struct sk_buff *skb); /* ---- L2CAP channels ---- */ -static struct sock *__l2cap_get_chan_by_dcid(struct l2cap_chan_list *l, u16 cid) +static struct l2cap_chan *__l2cap_get_chan_by_dcid(struct l2cap_conn *conn, u16 cid) { - struct sock *s; - for (s = l->head; s; s = l2cap_pi(s)->next_c) { + struct l2cap_chan *c; + + list_for_each_entry(c, &conn->chan_l, list) { + struct sock *s = c->sk; if (l2cap_pi(s)->dcid == cid) - break; + return c; } - return s; + return NULL; + } -static struct sock *__l2cap_get_chan_by_scid(struct l2cap_chan_list *l, u16 cid) +static struct l2cap_chan *__l2cap_get_chan_by_scid(struct l2cap_conn *conn, u16 cid) { - struct sock *s; - for (s = l->head; s; s = l2cap_pi(s)->next_c) { + struct l2cap_chan *c; + + list_for_each_entry(c, &conn->chan_l, list) { + struct sock *s = c->sk; if (l2cap_pi(s)->scid == cid) - break; + return c; } - return s; + return NULL; } /* Find channel with given SCID. * Returns locked socket */ -static inline struct sock *l2cap_get_chan_by_scid(struct l2cap_chan_list *l, u16 cid) +static struct l2cap_chan *l2cap_get_chan_by_scid(struct l2cap_conn *conn, u16 cid) { - struct sock *s; - read_lock(&l->lock); - s = __l2cap_get_chan_by_scid(l, cid); - if (s) - bh_lock_sock(s); - read_unlock(&l->lock); - return s; + struct l2cap_chan *c; + + read_lock(&conn->chan_lock); + c = __l2cap_get_chan_by_scid(conn, cid); + if (c) + bh_lock_sock(c->sk); + read_unlock(&conn->chan_lock); + return c; } -static struct sock *__l2cap_get_chan_by_ident(struct l2cap_chan_list *l, u8 ident) +static struct l2cap_chan *__l2cap_get_chan_by_ident(struct l2cap_conn *conn, u8 ident) { - struct sock *s; - for (s = l->head; s; s = l2cap_pi(s)->next_c) { - if (l2cap_pi(s)->ident == ident) - break; + struct l2cap_chan *c; + + list_for_each_entry(c, &conn->chan_l, list) { + if (c->ident == ident) + return c; } - return s; + return NULL; } -static inline struct sock *l2cap_get_chan_by_ident(struct l2cap_chan_list *l, u8 ident) +static inline struct l2cap_chan *l2cap_get_chan_by_ident(struct l2cap_conn *conn, u8 ident) { - struct sock *s; - read_lock(&l->lock); - s = __l2cap_get_chan_by_ident(l, ident); - if (s) - bh_lock_sock(s); - read_unlock(&l->lock); - return s; + struct l2cap_chan *c; + + read_lock(&conn->chan_lock); + c = __l2cap_get_chan_by_ident(conn, ident); + if (c) + bh_lock_sock(c->sk); + read_unlock(&conn->chan_lock); + return c; } -static u16 l2cap_alloc_cid(struct l2cap_chan_list *l) +static u16 l2cap_alloc_cid(struct l2cap_conn *conn) { u16 cid = L2CAP_CID_DYN_START; for (; cid < L2CAP_CID_DYN_END; cid++) { - if (!__l2cap_get_chan_by_scid(l, cid)) + if (!__l2cap_get_chan_by_scid(conn, cid)) return cid; } return 0; } -static inline void __l2cap_chan_link(struct l2cap_chan_list *l, struct sock *sk) +static struct l2cap_chan *l2cap_chan_alloc(struct sock *sk) { - sock_hold(sk); - - if (l->head) - l2cap_pi(l->head)->prev_c = sk; + struct l2cap_chan *chan; - l2cap_pi(sk)->next_c = l->head; - l2cap_pi(sk)->prev_c = NULL; - l->head = sk; -} - -static inline void l2cap_chan_unlink(struct l2cap_chan_list *l, struct sock *sk) -{ - struct sock *next = l2cap_pi(sk)->next_c, *prev = l2cap_pi(sk)->prev_c; - - write_lock_bh(&l->lock); - if (sk == l->head) - l->head = next; + chan = kzalloc(sizeof(*chan), GFP_ATOMIC); + if (!chan) + return NULL; - if (next) - l2cap_pi(next)->prev_c = prev; - if (prev) - l2cap_pi(prev)->next_c = next; - write_unlock_bh(&l->lock); + chan->sk = sk; - __sock_put(sk); + return chan; } -static void __l2cap_chan_add(struct l2cap_conn *conn, struct sock *sk) +static void __l2cap_chan_add(struct l2cap_conn *conn, struct l2cap_chan *chan) { - struct l2cap_chan_list *l = &conn->chan_list; + struct sock *sk = chan->sk; BT_DBG("conn %p, psm 0x%2.2x, dcid 0x%4.4x", conn, l2cap_pi(sk)->psm, l2cap_pi(sk)->dcid); @@ -188,7 +181,7 @@ static void __l2cap_chan_add(struct l2cap_conn *conn, struct sock *sk) l2cap_pi(sk)->dcid = L2CAP_CID_LE_DATA; } else { /* Alloc CID for connection-oriented socket */ - l2cap_pi(sk)->scid = l2cap_alloc_cid(l); + l2cap_pi(sk)->scid = l2cap_alloc_cid(conn); l2cap_pi(sk)->omtu = L2CAP_DEFAULT_MTU; } } else if (sk->sk_type == SOCK_DGRAM) { @@ -203,23 +196,30 @@ static void __l2cap_chan_add(struct l2cap_conn *conn, struct sock *sk) l2cap_pi(sk)->omtu = L2CAP_DEFAULT_MTU; } - __l2cap_chan_link(l, sk); + sock_hold(sk); + + list_add(&chan->list, &conn->chan_l); } /* Delete channel. * Must be called on the locked socket. */ -void l2cap_chan_del(struct sock *sk, int err) +void l2cap_chan_del(struct l2cap_chan *chan, int err) { + struct sock *sk = chan->sk; struct l2cap_conn *conn = l2cap_pi(sk)->conn; struct sock *parent = bt_sk(sk)->parent; l2cap_sock_clear_timer(sk); - BT_DBG("sk %p, conn %p, err %d", sk, conn, err); + BT_DBG("chan %p, conn %p, err %d", chan, conn, err); if (conn) { - /* Unlink from channel list */ - l2cap_chan_unlink(&conn->chan_list, sk); + /* Delete from channel list */ + write_lock_bh(&conn->chan_lock); + list_del(&chan->list); + write_unlock_bh(&conn->chan_lock); + __sock_put(sk); + l2cap_pi(sk)->conn = NULL; hci_conn_put(conn->hcon); } @@ -236,23 +236,30 @@ void l2cap_chan_del(struct sock *sk, int err) } else sk->sk_state_change(sk); - skb_queue_purge(TX_QUEUE(sk)); + if (!(l2cap_pi(sk)->conf_state & L2CAP_CONF_OUTPUT_DONE && + l2cap_pi(sk)->conf_state & L2CAP_CONF_INPUT_DONE)) + goto free; + + skb_queue_purge(&chan->tx_q); if (l2cap_pi(sk)->mode == L2CAP_MODE_ERTM) { struct srej_list *l, *tmp; - del_timer(&l2cap_pi(sk)->retrans_timer); - del_timer(&l2cap_pi(sk)->monitor_timer); - del_timer(&l2cap_pi(sk)->ack_timer); + del_timer(&chan->retrans_timer); + del_timer(&chan->monitor_timer); + del_timer(&chan->ack_timer); - skb_queue_purge(SREJ_QUEUE(sk)); - skb_queue_purge(BUSY_QUEUE(sk)); + skb_queue_purge(&chan->srej_q); + skb_queue_purge(&chan->busy_q); - list_for_each_entry_safe(l, tmp, SREJ_LIST(sk), list) { + list_for_each_entry_safe(l, tmp, &chan->srej_l, list) { list_del(&l->list); kfree(l); } } + +free: + kfree(chan); } static inline u8 l2cap_get_auth_type(struct sock *sk) @@ -338,10 +345,11 @@ void l2cap_send_cmd(struct l2cap_conn *conn, u8 ident, u8 code, u16 len, void *d hci_send_acl(conn->hcon, skb, flags); } -static inline void l2cap_send_sframe(struct l2cap_pinfo *pi, u16 control) +static inline void l2cap_send_sframe(struct l2cap_chan *chan, u16 control) { struct sk_buff *skb; struct l2cap_hdr *lh; + struct l2cap_pinfo *pi = l2cap_pi(chan->sk); struct l2cap_conn *conn = pi->conn; struct sock *sk = (struct sock *)pi; int count, hlen = L2CAP_HDR_SIZE + 2; @@ -353,19 +361,19 @@ static inline void l2cap_send_sframe(struct l2cap_pinfo *pi, u16 control) if (pi->fcs == L2CAP_FCS_CRC16) hlen += 2; - BT_DBG("pi %p, control 0x%2.2x", pi, control); + BT_DBG("chan %p, control 0x%2.2x", chan, control); count = min_t(unsigned int, conn->mtu, hlen); control |= L2CAP_CTRL_FRAME_TYPE; - if (pi->conn_state & L2CAP_CONN_SEND_FBIT) { + if (chan->conn_state & L2CAP_CONN_SEND_FBIT) { control |= L2CAP_CTRL_FINAL; - pi->conn_state &= ~L2CAP_CONN_SEND_FBIT; + chan->conn_state &= ~L2CAP_CONN_SEND_FBIT; } - if (pi->conn_state & L2CAP_CONN_SEND_PBIT) { + if (chan->conn_state & L2CAP_CONN_SEND_PBIT) { control |= L2CAP_CTRL_POLL; - pi->conn_state &= ~L2CAP_CONN_SEND_PBIT; + chan->conn_state &= ~L2CAP_CONN_SEND_PBIT; } skb = bt_skb_alloc(count, GFP_ATOMIC); @@ -390,17 +398,17 @@ static inline void l2cap_send_sframe(struct l2cap_pinfo *pi, u16 control) hci_send_acl(pi->conn->hcon, skb, flags); } -static inline void l2cap_send_rr_or_rnr(struct l2cap_pinfo *pi, u16 control) +static inline void l2cap_send_rr_or_rnr(struct l2cap_chan *chan, u16 control) { - if (pi->conn_state & L2CAP_CONN_LOCAL_BUSY) { + if (chan->conn_state & L2CAP_CONN_LOCAL_BUSY) { control |= L2CAP_SUPER_RCV_NOT_READY; - pi->conn_state |= L2CAP_CONN_RNR_SENT; + chan->conn_state |= L2CAP_CONN_RNR_SENT; } else control |= L2CAP_SUPER_RCV_READY; - control |= pi->buffer_seq << L2CAP_CTRL_REQSEQ_SHIFT; + control |= chan->buffer_seq << L2CAP_CTRL_REQSEQ_SHIFT; - l2cap_send_sframe(pi, control); + l2cap_send_sframe(chan, control); } static inline int __l2cap_no_conn_pending(struct sock *sk) @@ -408,8 +416,9 @@ static inline int __l2cap_no_conn_pending(struct sock *sk) return !(l2cap_pi(sk)->conf_state & L2CAP_CONF_CONNECT_PEND); } -static void l2cap_do_start(struct sock *sk) +static void l2cap_do_start(struct l2cap_chan *chan) { + struct sock *sk = chan->sk; struct l2cap_conn *conn = l2cap_pi(sk)->conn; if (conn->info_state & L2CAP_INFO_FEAT_MASK_REQ_SENT) { @@ -421,11 +430,11 @@ static void l2cap_do_start(struct sock *sk) req.scid = cpu_to_le16(l2cap_pi(sk)->scid); req.psm = l2cap_pi(sk)->psm; - l2cap_pi(sk)->ident = l2cap_get_ident(conn); + chan->ident = l2cap_get_ident(conn); l2cap_pi(sk)->conf_state |= L2CAP_CONF_CONNECT_PEND; - l2cap_send_cmd(conn, l2cap_pi(sk)->ident, - L2CAP_CONN_REQ, sizeof(req), &req); + l2cap_send_cmd(conn, chan->ident, L2CAP_CONN_REQ, + sizeof(req), &req); } } else { struct l2cap_info_req req; @@ -458,19 +467,20 @@ static inline int l2cap_mode_supported(__u8 mode, __u32 feat_mask) } } -void l2cap_send_disconn_req(struct l2cap_conn *conn, struct sock *sk, int err) +void l2cap_send_disconn_req(struct l2cap_conn *conn, struct l2cap_chan *chan, int err) { + struct sock *sk; struct l2cap_disconn_req req; if (!conn) return; - skb_queue_purge(TX_QUEUE(sk)); + sk = chan->sk; if (l2cap_pi(sk)->mode == L2CAP_MODE_ERTM) { - del_timer(&l2cap_pi(sk)->retrans_timer); - del_timer(&l2cap_pi(sk)->monitor_timer); - del_timer(&l2cap_pi(sk)->ack_timer); + del_timer(&chan->retrans_timer); + del_timer(&chan->monitor_timer); + del_timer(&chan->ack_timer); } req.dcid = cpu_to_le16(l2cap_pi(sk)->dcid); @@ -485,17 +495,15 @@ void l2cap_send_disconn_req(struct l2cap_conn *conn, struct sock *sk, int err) /* ---- L2CAP connections ---- */ static void l2cap_conn_start(struct l2cap_conn *conn) { - struct l2cap_chan_list *l = &conn->chan_list; - struct sock_del_list del, *tmp1, *tmp2; - struct sock *sk; + struct l2cap_chan *chan, *tmp; BT_DBG("conn %p", conn); - INIT_LIST_HEAD(&del.list); + read_lock(&conn->chan_lock); - read_lock(&l->lock); + list_for_each_entry_safe(chan, tmp, &conn->chan_l, list) { + struct sock *sk = chan->sk; - for (sk = l->head; sk; sk = l2cap_pi(sk)->next_c) { bh_lock_sock(sk); if (sk->sk_type != SOCK_SEQPACKET && @@ -517,10 +525,11 @@ static void l2cap_conn_start(struct l2cap_conn *conn) conn->feat_mask) && l2cap_pi(sk)->conf_state & L2CAP_CONF_STATE2_DEVICE) { - tmp1 = kzalloc(sizeof(struct sock_del_list), - GFP_ATOMIC); - tmp1->sk = sk; - list_add_tail(&tmp1->list, &del.list); + /* __l2cap_sock_close() calls list_del(chan) + * so release the lock */ + read_unlock_bh(&conn->chan_lock); + __l2cap_sock_close(sk, ECONNRESET); + read_lock_bh(&conn->chan_lock); bh_unlock_sock(sk); continue; } @@ -528,11 +537,11 @@ static void l2cap_conn_start(struct l2cap_conn *conn) req.scid = cpu_to_le16(l2cap_pi(sk)->scid); req.psm = l2cap_pi(sk)->psm; - l2cap_pi(sk)->ident = l2cap_get_ident(conn); + chan->ident = l2cap_get_ident(conn); l2cap_pi(sk)->conf_state |= L2CAP_CONF_CONNECT_PEND; - l2cap_send_cmd(conn, l2cap_pi(sk)->ident, - L2CAP_CONN_REQ, sizeof(req), &req); + l2cap_send_cmd(conn, chan->ident, L2CAP_CONN_REQ, + sizeof(req), &req); } else if (sk->sk_state == BT_CONNECT2) { struct l2cap_conn_rsp rsp; @@ -557,8 +566,8 @@ static void l2cap_conn_start(struct l2cap_conn *conn) rsp.status = cpu_to_le16(L2CAP_CS_AUTHEN_PEND); } - l2cap_send_cmd(conn, l2cap_pi(sk)->ident, - L2CAP_CONN_RSP, sizeof(rsp), &rsp); + l2cap_send_cmd(conn, chan->ident, L2CAP_CONN_RSP, + sizeof(rsp), &rsp); if (l2cap_pi(sk)->conf_state & L2CAP_CONF_REQ_SENT || rsp.result != L2CAP_CR_SUCCESS) { @@ -568,22 +577,14 @@ static void l2cap_conn_start(struct l2cap_conn *conn) l2cap_pi(sk)->conf_state |= L2CAP_CONF_REQ_SENT; l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ, - l2cap_build_conf_req(sk, buf), buf); - l2cap_pi(sk)->num_conf_req++; + l2cap_build_conf_req(chan, buf), buf); + chan->num_conf_req++; } bh_unlock_sock(sk); } - read_unlock(&l->lock); - - list_for_each_entry_safe(tmp1, tmp2, &del.list, list) { - bh_lock_sock(tmp1->sk); - __l2cap_sock_close(tmp1->sk, ECONNRESET); - bh_unlock_sock(tmp1->sk); - list_del(&tmp1->list); - kfree(tmp1); - } + read_unlock(&conn->chan_lock); } /* Find socket with cid and source bdaddr. @@ -591,7 +592,7 @@ static void l2cap_conn_start(struct l2cap_conn *conn) */ static struct sock *l2cap_get_sock_by_scid(int state, __le16 cid, bdaddr_t *src) { - struct sock *s, *sk = NULL, *sk1 = NULL; + struct sock *sk = NULL, *sk1 = NULL; struct hlist_node *node; read_lock(&l2cap_sk_list.lock); @@ -610,18 +611,16 @@ static struct sock *l2cap_get_sock_by_scid(int state, __le16 cid, bdaddr_t *src) sk1 = sk; } } - s = node ? sk : sk1; - if (s) - bh_lock_sock(s); + read_unlock(&l2cap_sk_list.lock); - return s; + return node ? sk : sk1; } static void l2cap_le_conn_ready(struct l2cap_conn *conn) { - struct l2cap_chan_list *list = &conn->chan_list; - struct sock *parent, *uninitialized_var(sk); + struct sock *parent, *sk; + struct l2cap_chan *chan; BT_DBG(""); @@ -631,6 +630,8 @@ static void l2cap_le_conn_ready(struct l2cap_conn *conn) if (!parent) return; + bh_lock_sock(parent); + /* Check for backlog size */ if (sk_acceptq_is_full(parent)) { BT_DBG("backlog full %d", parent->sk_ack_backlog); @@ -641,24 +642,33 @@ static void l2cap_le_conn_ready(struct l2cap_conn *conn) if (!sk) goto clean; - write_lock_bh(&list->lock); + chan = l2cap_chan_alloc(sk); + if (!chan) { + l2cap_sock_kill(sk); + goto clean; + } + + write_lock_bh(&conn->chan_lock); hci_conn_hold(conn->hcon); l2cap_sock_init(sk, parent); + bacpy(&bt_sk(sk)->src, conn->src); bacpy(&bt_sk(sk)->dst, conn->dst); bt_accept_enqueue(parent, sk); - __l2cap_chan_add(conn, sk); + __l2cap_chan_add(conn, chan); + + l2cap_pi(sk)->chan = chan; l2cap_sock_set_timer(sk, sk->sk_sndtimeo); sk->sk_state = BT_CONNECTED; parent->sk_data_ready(parent, 0); - write_unlock_bh(&list->lock); + write_unlock_bh(&conn->chan_lock); clean: bh_unlock_sock(parent); @@ -666,17 +676,18 @@ clean: static void l2cap_conn_ready(struct l2cap_conn *conn) { - struct l2cap_chan_list *l = &conn->chan_list; - struct sock *sk; + struct l2cap_chan *chan; BT_DBG("conn %p", conn); if (!conn->hcon->out && conn->hcon->type == LE_LINK) l2cap_le_conn_ready(conn); - read_lock(&l->lock); + read_lock(&conn->chan_lock); + + list_for_each_entry(chan, &conn->chan_l, list) { + struct sock *sk = chan->sk; - for (sk = l->head; sk; sk = l2cap_pi(sk)->next_c) { bh_lock_sock(sk); if (conn->hcon->type == LE_LINK) { @@ -691,30 +702,31 @@ static void l2cap_conn_ready(struct l2cap_conn *conn) sk->sk_state = BT_CONNECTED; sk->sk_state_change(sk); } else if (sk->sk_state == BT_CONNECT) - l2cap_do_start(sk); + l2cap_do_start(chan); bh_unlock_sock(sk); } - read_unlock(&l->lock); + read_unlock(&conn->chan_lock); } /* Notify sockets that we cannot guaranty reliability anymore */ static void l2cap_conn_unreliable(struct l2cap_conn *conn, int err) { - struct l2cap_chan_list *l = &conn->chan_list; - struct sock *sk; + struct l2cap_chan *chan; BT_DBG("conn %p", conn); - read_lock(&l->lock); + read_lock(&conn->chan_lock); + + list_for_each_entry(chan, &conn->chan_l, list) { + struct sock *sk = chan->sk; - for (sk = l->head; sk; sk = l2cap_pi(sk)->next_c) { if (l2cap_pi(sk)->force_reliable) sk->sk_err = err; } - read_unlock(&l->lock); + read_unlock(&conn->chan_lock); } static void l2cap_info_timeout(unsigned long arg) @@ -754,7 +766,9 @@ static struct l2cap_conn *l2cap_conn_add(struct hci_conn *hcon, u8 status) conn->feat_mask = 0; spin_lock_init(&conn->lock); - rwlock_init(&conn->chan_list.lock); + rwlock_init(&conn->chan_lock); + + INIT_LIST_HEAD(&conn->chan_l); if (hcon->type != LE_LINK) setup_timer(&conn->info_timer, l2cap_info_timeout, @@ -768,6 +782,7 @@ static struct l2cap_conn *l2cap_conn_add(struct hci_conn *hcon, u8 status) static void l2cap_conn_del(struct hci_conn *hcon, int err) { struct l2cap_conn *conn = hcon->l2cap_data; + struct l2cap_chan *chan, *l; struct sock *sk; if (!conn) @@ -778,9 +793,10 @@ static void l2cap_conn_del(struct hci_conn *hcon, int err) kfree_skb(conn->rx_skb); /* Kill channels */ - while ((sk = conn->chan_list.head)) { + list_for_each_entry_safe(chan, l, &conn->chan_l, list) { + sk = chan->sk; bh_lock_sock(sk); - l2cap_chan_del(sk, err); + l2cap_chan_del(chan, err); bh_unlock_sock(sk); l2cap_sock_kill(sk); } @@ -792,12 +808,11 @@ static void l2cap_conn_del(struct hci_conn *hcon, int err) kfree(conn); } -static inline void l2cap_chan_add(struct l2cap_conn *conn, struct sock *sk) +static inline void l2cap_chan_add(struct l2cap_conn *conn, struct l2cap_chan *chan) { - struct l2cap_chan_list *l = &conn->chan_list; - write_lock_bh(&l->lock); - __l2cap_chan_add(conn, sk); - write_unlock_bh(&l->lock); + write_lock_bh(&conn->chan_lock); + __l2cap_chan_add(conn, chan); + write_unlock_bh(&conn->chan_lock); } /* ---- Socket interface ---- */ @@ -837,6 +852,7 @@ int l2cap_do_connect(struct sock *sk) bdaddr_t *src = &bt_sk(sk)->src; bdaddr_t *dst = &bt_sk(sk)->dst; struct l2cap_conn *conn; + struct l2cap_chan *chan; struct hci_conn *hcon; struct hci_dev *hdev; __u8 auth_type; @@ -872,10 +888,19 @@ int l2cap_do_connect(struct sock *sk) goto done; } + chan = l2cap_chan_alloc(sk); + if (!chan) { + hci_conn_put(hcon); + err = -ENOMEM; + goto done; + } + /* Update source addr of the socket */ bacpy(src, conn->src); - l2cap_chan_add(conn, sk); + l2cap_chan_add(conn, chan); + + l2cap_pi(sk)->chan = chan; sk->sk_state = BT_CONNECT; l2cap_sock_set_timer(sk, sk->sk_sndtimeo); @@ -887,7 +912,7 @@ int l2cap_do_connect(struct sock *sk) if (l2cap_check_security(sk)) sk->sk_state = BT_CONNECTED; } else - l2cap_do_start(sk); + l2cap_do_start(chan); } err = 0; @@ -905,7 +930,7 @@ int __l2cap_wait_ack(struct sock *sk) int timeo = HZ/5; add_wait_queue(sk_sleep(sk), &wait); - while ((l2cap_pi(sk)->unacked_frames > 0 && l2cap_pi(sk)->conn)) { + while ((l2cap_pi(sk)->chan->unacked_frames > 0 && l2cap_pi(sk)->conn)) { set_current_state(TASK_INTERRUPTIBLE); if (!timeo) @@ -931,57 +956,59 @@ int __l2cap_wait_ack(struct sock *sk) static void l2cap_monitor_timeout(unsigned long arg) { - struct sock *sk = (void *) arg; + struct l2cap_chan *chan = (void *) arg; + struct sock *sk = chan->sk; - BT_DBG("sk %p", sk); + BT_DBG("chan %p", chan); 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, ECONNABORTED); + if (chan->retry_count >= chan->remote_max_tx) { + l2cap_send_disconn_req(l2cap_pi(sk)->conn, chan, ECONNABORTED); bh_unlock_sock(sk); return; } - l2cap_pi(sk)->retry_count++; + chan->retry_count++; __mod_monitor_timer(); - l2cap_send_rr_or_rnr(l2cap_pi(sk), L2CAP_CTRL_POLL); + l2cap_send_rr_or_rnr(chan, L2CAP_CTRL_POLL); bh_unlock_sock(sk); } static void l2cap_retrans_timeout(unsigned long arg) { - struct sock *sk = (void *) arg; + struct l2cap_chan *chan = (void *) arg; + struct sock *sk = chan->sk; - BT_DBG("sk %p", sk); + BT_DBG("chan %p", chan); bh_lock_sock(sk); - l2cap_pi(sk)->retry_count = 1; + chan->retry_count = 1; __mod_monitor_timer(); - l2cap_pi(sk)->conn_state |= L2CAP_CONN_WAIT_F; + chan->conn_state |= L2CAP_CONN_WAIT_F; - l2cap_send_rr_or_rnr(l2cap_pi(sk), L2CAP_CTRL_POLL); + l2cap_send_rr_or_rnr(chan, L2CAP_CTRL_POLL); bh_unlock_sock(sk); } -static void l2cap_drop_acked_frames(struct sock *sk) +static void l2cap_drop_acked_frames(struct l2cap_chan *chan) { struct sk_buff *skb; - while ((skb = skb_peek(TX_QUEUE(sk))) && - l2cap_pi(sk)->unacked_frames) { - if (bt_cb(skb)->tx_seq == l2cap_pi(sk)->expected_ack_seq) + while ((skb = skb_peek(&chan->tx_q)) && + chan->unacked_frames) { + if (bt_cb(skb)->tx_seq == chan->expected_ack_seq) break; - skb = skb_dequeue(TX_QUEUE(sk)); + skb = skb_dequeue(&chan->tx_q); kfree_skb(skb); - l2cap_pi(sk)->unacked_frames--; + chan->unacked_frames--; } - if (!l2cap_pi(sk)->unacked_frames) - del_timer(&l2cap_pi(sk)->retrans_timer); + if (!chan->unacked_frames) + del_timer(&chan->retrans_timer); } void l2cap_do_send(struct sock *sk, struct sk_buff *skb) @@ -1000,15 +1027,16 @@ void l2cap_do_send(struct sock *sk, struct sk_buff *skb) hci_send_acl(hcon, skb, flags); } -void l2cap_streaming_send(struct sock *sk) +void l2cap_streaming_send(struct l2cap_chan *chan) { + struct sock *sk = chan->sk; struct sk_buff *skb; struct l2cap_pinfo *pi = l2cap_pi(sk); u16 control, fcs; - while ((skb = skb_dequeue(TX_QUEUE(sk)))) { + while ((skb = skb_dequeue(&chan->tx_q))) { control = get_unaligned_le16(skb->data + L2CAP_HDR_SIZE); - control |= pi->next_tx_seq << L2CAP_CTRL_TXSEQ_SHIFT; + control |= chan->next_tx_seq << L2CAP_CTRL_TXSEQ_SHIFT; put_unaligned_le16(control, skb->data + L2CAP_HDR_SIZE); if (pi->fcs == L2CAP_FCS_CRC16) { @@ -1018,17 +1046,18 @@ void l2cap_streaming_send(struct sock *sk) l2cap_do_send(sk, skb); - pi->next_tx_seq = (pi->next_tx_seq + 1) % 64; + chan->next_tx_seq = (chan->next_tx_seq + 1) % 64; } } -static void l2cap_retransmit_one_frame(struct sock *sk, u8 tx_seq) +static void l2cap_retransmit_one_frame(struct l2cap_chan *chan, u8 tx_seq) { + struct sock *sk = chan->sk; struct l2cap_pinfo *pi = l2cap_pi(sk); struct sk_buff *skb, *tx_skb; u16 control, fcs; - skb = skb_peek(TX_QUEUE(sk)); + skb = skb_peek(&chan->tx_q); if (!skb) return; @@ -1036,14 +1065,14 @@ static void l2cap_retransmit_one_frame(struct sock *sk, u8 tx_seq) if (bt_cb(skb)->tx_seq == tx_seq) break; - if (skb_queue_is_last(TX_QUEUE(sk), skb)) + if (skb_queue_is_last(&chan->tx_q, skb)) return; - } while ((skb = skb_queue_next(TX_QUEUE(sk), skb))); + } while ((skb = skb_queue_next(&chan->tx_q, skb))); - if (pi->remote_max_tx && - bt_cb(skb)->retries == pi->remote_max_tx) { - l2cap_send_disconn_req(pi->conn, sk, ECONNABORTED); + if (chan->remote_max_tx && + bt_cb(skb)->retries == chan->remote_max_tx) { + l2cap_send_disconn_req(pi->conn, chan, ECONNABORTED); return; } @@ -1051,12 +1080,12 @@ static void l2cap_retransmit_one_frame(struct sock *sk, u8 tx_seq) bt_cb(skb)->retries++; control = get_unaligned_le16(tx_skb->data + L2CAP_HDR_SIZE); - if (pi->conn_state & L2CAP_CONN_SEND_FBIT) { + if (chan->conn_state & L2CAP_CONN_SEND_FBIT) { control |= L2CAP_CTRL_FINAL; - pi->conn_state &= ~L2CAP_CONN_SEND_FBIT; + chan->conn_state &= ~L2CAP_CONN_SEND_FBIT; } - control |= (pi->buffer_seq << L2CAP_CTRL_REQSEQ_SHIFT) + control |= (chan->buffer_seq << L2CAP_CTRL_REQSEQ_SHIFT) | (tx_seq << L2CAP_CTRL_TXSEQ_SHIFT); put_unaligned_le16(control, tx_skb->data + L2CAP_HDR_SIZE); @@ -1069,9 +1098,10 @@ static void l2cap_retransmit_one_frame(struct sock *sk, u8 tx_seq) l2cap_do_send(sk, tx_skb); } -int l2cap_ertm_send(struct sock *sk) +int l2cap_ertm_send(struct l2cap_chan *chan) { struct sk_buff *skb, *tx_skb; + struct sock *sk = chan->sk; struct l2cap_pinfo *pi = l2cap_pi(sk); u16 control, fcs; int nsent = 0; @@ -1079,11 +1109,11 @@ int l2cap_ertm_send(struct sock *sk) if (sk->sk_state != BT_CONNECTED) return -ENOTCONN; - while ((skb = sk->sk_send_head) && (!l2cap_tx_window_full(sk))) { + while ((skb = chan->tx_send_head) && (!l2cap_tx_window_full(chan))) { - if (pi->remote_max_tx && - bt_cb(skb)->retries == pi->remote_max_tx) { - l2cap_send_disconn_req(pi->conn, sk, ECONNABORTED); + if (chan->remote_max_tx && + bt_cb(skb)->retries == chan->remote_max_tx) { + l2cap_send_disconn_req(pi->conn, chan, ECONNABORTED); break; } @@ -1094,12 +1124,12 @@ int l2cap_ertm_send(struct sock *sk) control = get_unaligned_le16(tx_skb->data + L2CAP_HDR_SIZE); control &= L2CAP_CTRL_SAR; - if (pi->conn_state & L2CAP_CONN_SEND_FBIT) { + if (chan->conn_state & L2CAP_CONN_SEND_FBIT) { control |= L2CAP_CTRL_FINAL; - pi->conn_state &= ~L2CAP_CONN_SEND_FBIT; + chan->conn_state &= ~L2CAP_CONN_SEND_FBIT; } - control |= (pi->buffer_seq << L2CAP_CTRL_REQSEQ_SHIFT) - | (pi->next_tx_seq << L2CAP_CTRL_TXSEQ_SHIFT); + control |= (chan->buffer_seq << L2CAP_CTRL_REQSEQ_SHIFT) + | (chan->next_tx_seq << L2CAP_CTRL_TXSEQ_SHIFT); put_unaligned_le16(control, tx_skb->data + L2CAP_HDR_SIZE); @@ -1112,18 +1142,18 @@ int l2cap_ertm_send(struct sock *sk) __mod_retrans_timer(); - bt_cb(skb)->tx_seq = pi->next_tx_seq; - pi->next_tx_seq = (pi->next_tx_seq + 1) % 64; + bt_cb(skb)->tx_seq = chan->next_tx_seq; + chan->next_tx_seq = (chan->next_tx_seq + 1) % 64; if (bt_cb(skb)->retries == 1) - pi->unacked_frames++; + chan->unacked_frames++; - pi->frames_sent++; + chan->frames_sent++; - if (skb_queue_is_last(TX_QUEUE(sk), skb)) - sk->sk_send_head = NULL; + if (skb_queue_is_last(&chan->tx_q, skb)) + chan->tx_send_head = NULL; else - sk->sk_send_head = skb_queue_next(TX_QUEUE(sk), skb); + chan->tx_send_head = skb_queue_next(&chan->tx_q, skb); nsent++; } @@ -1131,41 +1161,39 @@ int l2cap_ertm_send(struct sock *sk) return nsent; } -static int l2cap_retransmit_frames(struct sock *sk) +static int l2cap_retransmit_frames(struct l2cap_chan *chan) { - struct l2cap_pinfo *pi = l2cap_pi(sk); int ret; - if (!skb_queue_empty(TX_QUEUE(sk))) - sk->sk_send_head = TX_QUEUE(sk)->next; + if (!skb_queue_empty(&chan->tx_q)) + chan->tx_send_head = chan->tx_q.next; - pi->next_tx_seq = pi->expected_ack_seq; - ret = l2cap_ertm_send(sk); + chan->next_tx_seq = chan->expected_ack_seq; + ret = l2cap_ertm_send(chan); return ret; } -static void l2cap_send_ack(struct l2cap_pinfo *pi) +static void l2cap_send_ack(struct l2cap_chan *chan) { - struct sock *sk = (struct sock *)pi; u16 control = 0; - control |= pi->buffer_seq << L2CAP_CTRL_REQSEQ_SHIFT; + control |= chan->buffer_seq << L2CAP_CTRL_REQSEQ_SHIFT; - if (pi->conn_state & L2CAP_CONN_LOCAL_BUSY) { + if (chan->conn_state & L2CAP_CONN_LOCAL_BUSY) { control |= L2CAP_SUPER_RCV_NOT_READY; - pi->conn_state |= L2CAP_CONN_RNR_SENT; - l2cap_send_sframe(pi, control); + chan->conn_state |= L2CAP_CONN_RNR_SENT; + l2cap_send_sframe(chan, control); return; } - if (l2cap_ertm_send(sk) > 0) + if (l2cap_ertm_send(chan) > 0) return; control |= L2CAP_SUPER_RCV_READY; - l2cap_send_sframe(pi, control); + l2cap_send_sframe(chan, control); } -static void l2cap_send_srejtail(struct sock *sk) +static void l2cap_send_srejtail(struct l2cap_chan *chan) { struct srej_list *tail; u16 control; @@ -1173,10 +1201,10 @@ static void l2cap_send_srejtail(struct sock *sk) control = L2CAP_SUPER_SELECT_REJECT; control |= L2CAP_CTRL_FINAL; - tail = list_entry(SREJ_LIST(sk)->prev, struct srej_list, list); + tail = list_entry((&chan->srej_l)->prev, struct srej_list, list); control |= tail->tx_seq << L2CAP_CTRL_REQSEQ_SHIFT; - l2cap_send_sframe(l2cap_pi(sk), control); + l2cap_send_sframe(chan, control); } static inline int l2cap_skbuff_fromiovec(struct sock *sk, struct msghdr *msg, int len, int count, struct sk_buff *skb) @@ -1313,9 +1341,9 @@ struct sk_buff *l2cap_create_iframe_pdu(struct sock *sk, struct msghdr *msg, siz return skb; } -int l2cap_sar_segment_sdu(struct sock *sk, struct msghdr *msg, size_t len) +int l2cap_sar_segment_sdu(struct l2cap_chan *chan, struct msghdr *msg, size_t len) { - struct l2cap_pinfo *pi = l2cap_pi(sk); + struct sock *sk = chan->sk; struct sk_buff *skb; struct sk_buff_head sar_queue; u16 control; @@ -1323,20 +1351,20 @@ int l2cap_sar_segment_sdu(struct sock *sk, struct msghdr *msg, size_t len) skb_queue_head_init(&sar_queue); control = L2CAP_SDU_START; - skb = l2cap_create_iframe_pdu(sk, msg, pi->remote_mps, control, len); + skb = l2cap_create_iframe_pdu(sk, msg, chan->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; + len -= chan->remote_mps; + size += chan->remote_mps; while (len > 0) { size_t buflen; - if (len > pi->remote_mps) { + if (len > chan->remote_mps) { control = L2CAP_SDU_CONTINUE; - buflen = pi->remote_mps; + buflen = chan->remote_mps; } else { control = L2CAP_SDU_END; buflen = len; @@ -1352,9 +1380,9 @@ int l2cap_sar_segment_sdu(struct sock *sk, struct msghdr *msg, size_t len) len -= buflen; size += buflen; } - skb_queue_splice_tail(&sar_queue, TX_QUEUE(sk)); - if (sk->sk_send_head == NULL) - sk->sk_send_head = sar_queue.next; + skb_queue_splice_tail(&sar_queue, &chan->tx_q); + if (chan->tx_send_head == NULL) + chan->tx_send_head = sar_queue.next; return size; } @@ -1385,14 +1413,14 @@ static void l2cap_chan_ready(struct sock *sk) /* 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; + struct l2cap_chan *chan; BT_DBG("conn %p", conn); - read_lock(&l->lock); - for (sk = l->head; sk; sk = l2cap_pi(sk)->next_c) { + read_lock(&conn->chan_lock); + list_for_each_entry(chan, &conn->chan_l, list) { + struct sock *sk = chan->sk; if (sk->sk_type != SOCK_RAW) continue; @@ -1406,7 +1434,7 @@ static void l2cap_raw_recv(struct l2cap_conn *conn, struct sk_buff *skb) if (sock_queue_rcv_skb(sk, nskb)) kfree_skb(nskb); } - read_unlock(&l->lock); + read_unlock(&conn->chan_lock); } /* ---- L2CAP signalling commands ---- */ @@ -1538,32 +1566,35 @@ static void l2cap_add_conf_opt(void **ptr, u8 type, u8 len, unsigned long val) static void l2cap_ack_timeout(unsigned long arg) { - struct sock *sk = (void *) arg; + struct l2cap_chan *chan = (void *) arg; - bh_lock_sock(sk); - l2cap_send_ack(l2cap_pi(sk)); - bh_unlock_sock(sk); + bh_lock_sock(chan->sk); + l2cap_send_ack(chan); + bh_unlock_sock(chan->sk); } -static inline void l2cap_ertm_init(struct sock *sk) +static inline void l2cap_ertm_init(struct l2cap_chan *chan) { - 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; + struct sock *sk = chan->sk; + + chan->expected_ack_seq = 0; + chan->unacked_frames = 0; + chan->buffer_seq = 0; + chan->num_acked = 0; + chan->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); + setup_timer(&chan->retrans_timer, l2cap_retrans_timeout, + (unsigned long) chan); + setup_timer(&chan->monitor_timer, l2cap_monitor_timeout, + (unsigned long) chan); + setup_timer(&chan->ack_timer, l2cap_ack_timeout, (unsigned long) chan); - __skb_queue_head_init(SREJ_QUEUE(sk)); - __skb_queue_head_init(BUSY_QUEUE(sk)); + skb_queue_head_init(&chan->srej_q); + skb_queue_head_init(&chan->busy_q); - INIT_WORK(&l2cap_pi(sk)->busy_work, l2cap_busy_work); + INIT_LIST_HEAD(&chan->srej_l); + + INIT_WORK(&chan->busy_work, l2cap_busy_work); sk->sk_backlog_rcv = l2cap_ertm_data_rcv; } @@ -1581,16 +1612,16 @@ static inline __u8 l2cap_select_mode(__u8 mode, __u16 remote_feat_mask) } } -int l2cap_build_conf_req(struct sock *sk, void *data) +static int l2cap_build_conf_req(struct l2cap_chan *chan, void *data) { - struct l2cap_pinfo *pi = l2cap_pi(sk); + struct l2cap_pinfo *pi = l2cap_pi(chan->sk); struct l2cap_conf_req *req = data; struct l2cap_conf_rfc rfc = { .mode = pi->mode }; void *ptr = req->data; - BT_DBG("sk %p", sk); + BT_DBG("chan %p", chan); - if (pi->num_conf_req || pi->num_conf_rsp) + if (chan->num_conf_req || chan->num_conf_rsp) goto done; switch (pi->mode) { @@ -1679,20 +1710,20 @@ done: return ptr - data; } -static int l2cap_parse_conf_req(struct sock *sk, void *data) +static int l2cap_parse_conf_req(struct l2cap_chan *chan, void *data) { - struct l2cap_pinfo *pi = l2cap_pi(sk); + struct l2cap_pinfo *pi = l2cap_pi(chan->sk); struct l2cap_conf_rsp *rsp = data; void *ptr = rsp->data; - void *req = pi->conf_req; - int len = pi->conf_len; + void *req = chan->conf_req; + int len = chan->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); + BT_DBG("chan %p", chan); while (len >= L2CAP_CONF_OPT_SIZE) { len -= l2cap_get_conf_opt(&req, &type, &olen, &val); @@ -1733,7 +1764,7 @@ static int l2cap_parse_conf_req(struct sock *sk, void *data) } } - if (pi->num_conf_rsp || pi->num_conf_req > 1) + if (chan->num_conf_rsp || chan->num_conf_req > 1) goto done; switch (pi->mode) { @@ -1756,7 +1787,7 @@ done: result = L2CAP_CONF_UNACCEPT; rfc.mode = pi->mode; - if (pi->num_conf_rsp == 1) + if (chan->num_conf_rsp == 1) return -ECONNREFUSED; l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC, @@ -1783,13 +1814,13 @@ done: break; case L2CAP_MODE_ERTM: - pi->remote_tx_win = rfc.txwin_size; - pi->remote_max_tx = rfc.max_transmit; + chan->remote_tx_win = rfc.txwin_size; + chan->remote_max_tx = rfc.max_transmit; if (le16_to_cpu(rfc.max_pdu_size) > pi->conn->mtu - 10) rfc.max_pdu_size = cpu_to_le16(pi->conn->mtu - 10); - pi->remote_mps = le16_to_cpu(rfc.max_pdu_size); + chan->remote_mps = le16_to_cpu(rfc.max_pdu_size); rfc.retrans_timeout = le16_to_cpu(L2CAP_DEFAULT_RETRANS_TO); @@ -1807,7 +1838,7 @@ done: if (le16_to_cpu(rfc.max_pdu_size) > pi->conn->mtu - 10) rfc.max_pdu_size = cpu_to_le16(pi->conn->mtu - 10); - pi->remote_mps = le16_to_cpu(rfc.max_pdu_size); + chan->remote_mps = le16_to_cpu(rfc.max_pdu_size); pi->conf_state |= L2CAP_CONF_MODE_DONE; @@ -1916,6 +1947,31 @@ static int l2cap_build_conf_rsp(struct sock *sk, void *data, u16 result, u16 fla return ptr - data; } +void __l2cap_connect_rsp_defer(struct sock *sk) +{ + struct l2cap_conn_rsp rsp; + struct l2cap_conn *conn = l2cap_pi(sk)->conn; + struct l2cap_chan *chan = l2cap_pi(sk)->chan; + u8 buf[128]; + + sk->sk_state = BT_CONFIG; + + rsp.scid = cpu_to_le16(l2cap_pi(sk)->dcid); + rsp.dcid = cpu_to_le16(l2cap_pi(sk)->scid); + rsp.result = cpu_to_le16(L2CAP_CR_SUCCESS); + rsp.status = cpu_to_le16(L2CAP_CS_NO_INFO); + l2cap_send_cmd(conn, chan->ident, + L2CAP_CONN_RSP, sizeof(rsp), &rsp); + + if (l2cap_pi(sk)->conf_state & L2CAP_CONF_REQ_SENT) + return; + + l2cap_pi(sk)->conf_state |= L2CAP_CONF_REQ_SENT; + l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ, + l2cap_build_conf_req(chan, buf), buf); + chan->num_conf_req++; +} + static void l2cap_conf_rfc_get(struct sock *sk, void *rsp, int len) { struct l2cap_pinfo *pi = l2cap_pi(sk); @@ -1973,9 +2029,9 @@ static inline int l2cap_command_rej(struct l2cap_conn *conn, struct l2cap_cmd_hd 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 l2cap_chan *chan = NULL; struct sock *parent, *sk = NULL; int result, status = L2CAP_CS_NO_INFO; @@ -2013,11 +2069,17 @@ static inline int l2cap_connect_req(struct l2cap_conn *conn, struct l2cap_cmd_hd if (!sk) goto response; - write_lock_bh(&list->lock); + chan = l2cap_chan_alloc(sk); + if (!chan) { + l2cap_sock_kill(sk); + goto response; + } + + write_lock_bh(&conn->chan_lock); /* Check if we already have channel with that dcid */ - if (__l2cap_get_chan_by_dcid(list, scid)) { - write_unlock_bh(&list->lock); + if (__l2cap_get_chan_by_dcid(conn, scid)) { + write_unlock_bh(&conn->chan_lock); sock_set_flag(sk, SOCK_ZAPPED); l2cap_sock_kill(sk); goto response; @@ -2033,12 +2095,15 @@ static inline int l2cap_connect_req(struct l2cap_conn *conn, struct l2cap_cmd_hd bt_accept_enqueue(parent, sk); - __l2cap_chan_add(conn, sk); + __l2cap_chan_add(conn, chan); + + l2cap_pi(sk)->chan = chan; + dcid = l2cap_pi(sk)->scid; l2cap_sock_set_timer(sk, sk->sk_sndtimeo); - l2cap_pi(sk)->ident = cmd->ident; + chan->ident = cmd->ident; if (conn->info_state & L2CAP_INFO_FEAT_MASK_REQ_DONE) { if (l2cap_check_security(sk)) { @@ -2063,7 +2128,7 @@ static inline int l2cap_connect_req(struct l2cap_conn *conn, struct l2cap_cmd_hd status = L2CAP_CS_NO_INFO; } - write_unlock_bh(&list->lock); + write_unlock_bh(&conn->chan_lock); response: bh_unlock_sock(parent); @@ -2089,13 +2154,13 @@ sendresp: L2CAP_INFO_REQ, sizeof(info), &info); } - if (sk && !(l2cap_pi(sk)->conf_state & L2CAP_CONF_REQ_SENT) && + if (chan && !(l2cap_pi(sk)->conf_state & L2CAP_CONF_REQ_SENT) && result == L2CAP_CR_SUCCESS) { u8 buf[128]; l2cap_pi(sk)->conf_state |= L2CAP_CONF_REQ_SENT; l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ, - l2cap_build_conf_req(sk, buf), buf); - l2cap_pi(sk)->num_conf_req++; + l2cap_build_conf_req(chan, buf), buf); + chan->num_conf_req++; } return 0; @@ -2105,6 +2170,7 @@ static inline int l2cap_connect_rsp(struct l2cap_conn *conn, struct l2cap_cmd_hd { struct l2cap_conn_rsp *rsp = (struct l2cap_conn_rsp *) data; u16 scid, dcid, result, status; + struct l2cap_chan *chan; struct sock *sk; u8 req[128]; @@ -2116,19 +2182,21 @@ static inline int l2cap_connect_rsp(struct l2cap_conn *conn, struct l2cap_cmd_hd 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) + chan = l2cap_get_chan_by_scid(conn, scid); + if (!chan) return -EFAULT; } else { - sk = l2cap_get_chan_by_ident(&conn->chan_list, cmd->ident); - if (!sk) + chan = l2cap_get_chan_by_ident(conn, cmd->ident); + if (!chan) return -EFAULT; } + sk = chan->sk; + switch (result) { case L2CAP_CR_SUCCESS: sk->sk_state = BT_CONFIG; - l2cap_pi(sk)->ident = 0; + chan->ident = 0; l2cap_pi(sk)->dcid = dcid; l2cap_pi(sk)->conf_state &= ~L2CAP_CONF_CONNECT_PEND; @@ -2138,8 +2206,8 @@ static inline int l2cap_connect_rsp(struct l2cap_conn *conn, struct l2cap_cmd_hd l2cap_pi(sk)->conf_state |= L2CAP_CONF_REQ_SENT; l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ, - l2cap_build_conf_req(sk, req), req); - l2cap_pi(sk)->num_conf_req++; + l2cap_build_conf_req(chan, req), req); + chan->num_conf_req++; break; case L2CAP_CR_PEND: @@ -2155,7 +2223,7 @@ static inline int l2cap_connect_rsp(struct l2cap_conn *conn, struct l2cap_cmd_hd break; } - l2cap_chan_del(sk, ECONNREFUSED); + l2cap_chan_del(chan, ECONNREFUSED); break; } @@ -2179,6 +2247,7 @@ static inline int l2cap_config_req(struct l2cap_conn *conn, struct l2cap_cmd_hdr struct l2cap_conf_req *req = (struct l2cap_conf_req *) data; u16 dcid, flags; u8 rsp[64]; + struct l2cap_chan *chan; struct sock *sk; int len; @@ -2187,10 +2256,12 @@ static inline int l2cap_config_req(struct l2cap_conn *conn, struct l2cap_cmd_hdr BT_DBG("dcid 0x%4.4x flags 0x%2.2x", dcid, flags); - sk = l2cap_get_chan_by_scid(&conn->chan_list, dcid); - if (!sk) + chan = l2cap_get_chan_by_scid(conn, dcid); + if (!chan) return -ENOENT; + sk = chan->sk; + if (sk->sk_state != BT_CONFIG) { struct l2cap_cmd_rej rej; @@ -2202,7 +2273,7 @@ static inline int l2cap_config_req(struct l2cap_conn *conn, struct l2cap_cmd_hdr /* 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)) { + if (chan->conf_len + len > sizeof(chan->conf_req)) { l2cap_send_cmd(conn, cmd->ident, L2CAP_CONF_RSP, l2cap_build_conf_rsp(sk, rsp, L2CAP_CONF_REJECT, flags), rsp); @@ -2210,8 +2281,8 @@ static inline int l2cap_config_req(struct l2cap_conn *conn, struct l2cap_cmd_hdr } /* Store config. */ - memcpy(l2cap_pi(sk)->conf_req + l2cap_pi(sk)->conf_len, req->data, len); - l2cap_pi(sk)->conf_len += len; + memcpy(chan->conf_req + chan->conf_len, req->data, len); + chan->conf_len += len; if (flags & 0x0001) { /* Incomplete config. Send empty response. */ @@ -2222,17 +2293,17 @@ static inline int l2cap_config_req(struct l2cap_conn *conn, struct l2cap_cmd_hdr } /* Complete config. */ - len = l2cap_parse_conf_req(sk, rsp); + len = l2cap_parse_conf_req(chan, rsp); if (len < 0) { - l2cap_send_disconn_req(conn, sk, ECONNRESET); + l2cap_send_disconn_req(conn, chan, ECONNRESET); goto unlock; } l2cap_send_cmd(conn, cmd->ident, L2CAP_CONF_RSP, len, rsp); - l2cap_pi(sk)->num_conf_rsp++; + chan->num_conf_rsp++; /* Reset config buffer. */ - l2cap_pi(sk)->conf_len = 0; + chan->conf_len = 0; if (!(l2cap_pi(sk)->conf_state & L2CAP_CONF_OUTPUT_DONE)) goto unlock; @@ -2242,11 +2313,11 @@ static inline int l2cap_config_req(struct l2cap_conn *conn, struct l2cap_cmd_hdr 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)); + chan->next_tx_seq = 0; + chan->expected_tx_seq = 0; + skb_queue_head_init(&chan->tx_q); if (l2cap_pi(sk)->mode == L2CAP_MODE_ERTM) - l2cap_ertm_init(sk); + l2cap_ertm_init(chan); l2cap_chan_ready(sk); goto unlock; @@ -2256,8 +2327,8 @@ static inline int l2cap_config_req(struct l2cap_conn *conn, struct l2cap_cmd_hdr u8 buf[64]; l2cap_pi(sk)->conf_state |= L2CAP_CONF_REQ_SENT; l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ, - l2cap_build_conf_req(sk, buf), buf); - l2cap_pi(sk)->num_conf_req++; + l2cap_build_conf_req(chan, buf), buf); + chan->num_conf_req++; } unlock: @@ -2269,6 +2340,7 @@ static inline int l2cap_config_rsp(struct l2cap_conn *conn, struct l2cap_cmd_hdr { struct l2cap_conf_rsp *rsp = (struct l2cap_conf_rsp *)data; u16 scid, flags, result; + struct l2cap_chan *chan; struct sock *sk; int len = cmd->len - sizeof(*rsp); @@ -2279,21 +2351,23 @@ static inline int l2cap_config_rsp(struct l2cap_conn *conn, struct l2cap_cmd_hdr 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) + chan = l2cap_get_chan_by_scid(conn, scid); + if (!chan) return 0; + sk = chan->sk; + 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) { + if (chan->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, ECONNRESET); + l2cap_send_disconn_req(conn, chan, ECONNRESET); goto done; } @@ -2302,13 +2376,13 @@ static inline int l2cap_config_rsp(struct l2cap_conn *conn, struct l2cap_cmd_hdr len = l2cap_parse_conf_rsp(sk, rsp->data, len, req, &result); if (len < 0) { - l2cap_send_disconn_req(conn, sk, ECONNRESET); + l2cap_send_disconn_req(conn, chan, ECONNRESET); goto done; } l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ, len, req); - l2cap_pi(sk)->num_conf_req++; + chan->num_conf_req++; if (result != L2CAP_CONF_SUCCESS) goto done; break; @@ -2317,7 +2391,7 @@ static inline int l2cap_config_rsp(struct l2cap_conn *conn, struct l2cap_cmd_hdr default: sk->sk_err = ECONNRESET; l2cap_sock_set_timer(sk, HZ * 5); - l2cap_send_disconn_req(conn, sk, ECONNRESET); + l2cap_send_disconn_req(conn, chan, ECONNRESET); goto done; } @@ -2330,11 +2404,11 @@ static inline int l2cap_config_rsp(struct l2cap_conn *conn, struct l2cap_cmd_hdr set_default_fcs(l2cap_pi(sk)); 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)); + chan->next_tx_seq = 0; + chan->expected_tx_seq = 0; + skb_queue_head_init(&chan->tx_q); if (l2cap_pi(sk)->mode == L2CAP_MODE_ERTM) - l2cap_ertm_init(sk); + l2cap_ertm_init(chan); l2cap_chan_ready(sk); } @@ -2349,6 +2423,7 @@ static inline int l2cap_disconnect_req(struct l2cap_conn *conn, struct l2cap_cmd struct l2cap_disconn_req *req = (struct l2cap_disconn_req *) data; struct l2cap_disconn_rsp rsp; u16 dcid, scid; + struct l2cap_chan *chan; struct sock *sk; scid = __le16_to_cpu(req->scid); @@ -2356,10 +2431,12 @@ static inline int l2cap_disconnect_req(struct l2cap_conn *conn, struct l2cap_cmd BT_DBG("scid 0x%4.4x dcid 0x%4.4x", scid, dcid); - sk = l2cap_get_chan_by_scid(&conn->chan_list, dcid); - if (!sk) + chan = l2cap_get_chan_by_scid(conn, dcid); + if (!chan) return 0; + sk = chan->sk; + 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); @@ -2375,7 +2452,7 @@ static inline int l2cap_disconnect_req(struct l2cap_conn *conn, struct l2cap_cmd return 0; } - l2cap_chan_del(sk, ECONNRESET); + l2cap_chan_del(chan, ECONNRESET); bh_unlock_sock(sk); l2cap_sock_kill(sk); @@ -2386,6 +2463,7 @@ static inline int l2cap_disconnect_rsp(struct l2cap_conn *conn, struct l2cap_cmd { struct l2cap_disconn_rsp *rsp = (struct l2cap_disconn_rsp *) data; u16 dcid, scid; + struct l2cap_chan *chan; struct sock *sk; scid = __le16_to_cpu(rsp->scid); @@ -2393,10 +2471,12 @@ static inline int l2cap_disconnect_rsp(struct l2cap_conn *conn, struct l2cap_cmd BT_DBG("dcid 0x%4.4x scid 0x%4.4x", dcid, scid); - sk = l2cap_get_chan_by_scid(&conn->chan_list, scid); - if (!sk) + chan = l2cap_get_chan_by_scid(conn, scid); + if (!chan) return 0; + sk = chan->sk; + /* don't delete l2cap channel if sk is owned by user */ if (sock_owned_by_user(sk)) { sk->sk_state = BT_DISCONN; @@ -2406,7 +2486,7 @@ static inline int l2cap_disconnect_rsp(struct l2cap_conn *conn, struct l2cap_cmd return 0; } - l2cap_chan_del(sk, 0); + l2cap_chan_del(chan, 0); bh_unlock_sock(sk); l2cap_sock_kill(sk); @@ -2709,49 +2789,47 @@ static int l2cap_check_fcs(struct l2cap_pinfo *pi, struct sk_buff *skb) return 0; } -static inline void l2cap_send_i_or_rr_or_rnr(struct sock *sk) +static inline void l2cap_send_i_or_rr_or_rnr(struct l2cap_chan *chan) { - struct l2cap_pinfo *pi = l2cap_pi(sk); u16 control = 0; - pi->frames_sent = 0; + chan->frames_sent = 0; - control |= pi->buffer_seq << L2CAP_CTRL_REQSEQ_SHIFT; + control |= chan->buffer_seq << L2CAP_CTRL_REQSEQ_SHIFT; - if (pi->conn_state & L2CAP_CONN_LOCAL_BUSY) { + if (chan->conn_state & L2CAP_CONN_LOCAL_BUSY) { control |= L2CAP_SUPER_RCV_NOT_READY; - l2cap_send_sframe(pi, control); - pi->conn_state |= L2CAP_CONN_RNR_SENT; + l2cap_send_sframe(chan, control); + chan->conn_state |= L2CAP_CONN_RNR_SENT; } - if (pi->conn_state & L2CAP_CONN_REMOTE_BUSY) - l2cap_retransmit_frames(sk); + if (chan->conn_state & L2CAP_CONN_REMOTE_BUSY) + l2cap_retransmit_frames(chan); - l2cap_ertm_send(sk); + l2cap_ertm_send(chan); - if (!(pi->conn_state & L2CAP_CONN_LOCAL_BUSY) && - pi->frames_sent == 0) { + if (!(chan->conn_state & L2CAP_CONN_LOCAL_BUSY) && + chan->frames_sent == 0) { control |= L2CAP_SUPER_RCV_READY; - l2cap_send_sframe(pi, control); + l2cap_send_sframe(chan, control); } } -static int l2cap_add_to_srej_queue(struct sock *sk, struct sk_buff *skb, u8 tx_seq, u8 sar) +static int l2cap_add_to_srej_queue(struct l2cap_chan *chan, struct sk_buff *skb, u8 tx_seq, u8 sar) { struct sk_buff *next_skb; - struct l2cap_pinfo *pi = l2cap_pi(sk); int tx_seq_offset, next_tx_seq_offset; bt_cb(skb)->tx_seq = tx_seq; bt_cb(skb)->sar = sar; - next_skb = skb_peek(SREJ_QUEUE(sk)); + next_skb = skb_peek(&chan->srej_q); if (!next_skb) { - __skb_queue_tail(SREJ_QUEUE(sk), skb); + __skb_queue_tail(&chan->srej_q, skb); return 0; } - tx_seq_offset = (tx_seq - pi->buffer_seq) % 64; + tx_seq_offset = (tx_seq - chan->buffer_seq) % 64; if (tx_seq_offset < 0) tx_seq_offset += 64; @@ -2760,53 +2838,53 @@ static int l2cap_add_to_srej_queue(struct sock *sk, struct sk_buff *skb, u8 tx_s return -EINVAL; next_tx_seq_offset = (bt_cb(next_skb)->tx_seq - - pi->buffer_seq) % 64; + chan->buffer_seq) % 64; if (next_tx_seq_offset < 0) next_tx_seq_offset += 64; if (next_tx_seq_offset > tx_seq_offset) { - __skb_queue_before(SREJ_QUEUE(sk), next_skb, skb); + __skb_queue_before(&chan->srej_q, next_skb, skb); return 0; } - if (skb_queue_is_last(SREJ_QUEUE(sk), next_skb)) + if (skb_queue_is_last(&chan->srej_q, next_skb)) break; - } while ((next_skb = skb_queue_next(SREJ_QUEUE(sk), next_skb))); + } while ((next_skb = skb_queue_next(&chan->srej_q, next_skb))); - __skb_queue_tail(SREJ_QUEUE(sk), skb); + __skb_queue_tail(&chan->srej_q, skb); return 0; } -static int l2cap_ertm_reassembly_sdu(struct sock *sk, struct sk_buff *skb, u16 control) +static int l2cap_ertm_reassembly_sdu(struct l2cap_chan *chan, struct sk_buff *skb, u16 control) { - struct l2cap_pinfo *pi = l2cap_pi(sk); + struct l2cap_pinfo *pi = l2cap_pi(chan->sk); struct sk_buff *_skb; int err; switch (control & L2CAP_CTRL_SAR) { case L2CAP_SDU_UNSEGMENTED: - if (pi->conn_state & L2CAP_CONN_SAR_SDU) + if (chan->conn_state & L2CAP_CONN_SAR_SDU) goto drop; - err = sock_queue_rcv_skb(sk, skb); + err = sock_queue_rcv_skb(chan->sk, skb); if (!err) return err; break; case L2CAP_SDU_START: - if (pi->conn_state & L2CAP_CONN_SAR_SDU) + if (chan->conn_state & L2CAP_CONN_SAR_SDU) goto drop; - pi->sdu_len = get_unaligned_le16(skb->data); + chan->sdu_len = get_unaligned_le16(skb->data); - if (pi->sdu_len > pi->imtu) + if (chan->sdu_len > pi->imtu) goto disconnect; - pi->sdu = bt_skb_alloc(pi->sdu_len, GFP_ATOMIC); - if (!pi->sdu) + chan->sdu = bt_skb_alloc(chan->sdu_len, GFP_ATOMIC); + if (!chan->sdu) return -ENOMEM; /* pull sdu_len bytes only after alloc, because of Local Busy @@ -2814,63 +2892,63 @@ static int l2cap_ertm_reassembly_sdu(struct sock *sk, struct sk_buff *skb, u16 c * only once, i.e., when alloc does not fail */ skb_pull(skb, 2); - memcpy(skb_put(pi->sdu, skb->len), skb->data, skb->len); + memcpy(skb_put(chan->sdu, skb->len), skb->data, skb->len); - pi->conn_state |= L2CAP_CONN_SAR_SDU; - pi->partial_sdu_len = skb->len; + chan->conn_state |= L2CAP_CONN_SAR_SDU; + chan->partial_sdu_len = skb->len; break; case L2CAP_SDU_CONTINUE: - if (!(pi->conn_state & L2CAP_CONN_SAR_SDU)) + if (!(chan->conn_state & L2CAP_CONN_SAR_SDU)) goto disconnect; - if (!pi->sdu) + if (!chan->sdu) goto disconnect; - pi->partial_sdu_len += skb->len; - if (pi->partial_sdu_len > pi->sdu_len) + chan->partial_sdu_len += skb->len; + if (chan->partial_sdu_len > chan->sdu_len) goto drop; - memcpy(skb_put(pi->sdu, skb->len), skb->data, skb->len); + memcpy(skb_put(chan->sdu, skb->len), skb->data, skb->len); break; case L2CAP_SDU_END: - if (!(pi->conn_state & L2CAP_CONN_SAR_SDU)) + if (!(chan->conn_state & L2CAP_CONN_SAR_SDU)) goto disconnect; - if (!pi->sdu) + if (!chan->sdu) goto disconnect; - if (!(pi->conn_state & L2CAP_CONN_SAR_RETRY)) { - pi->partial_sdu_len += skb->len; + if (!(chan->conn_state & L2CAP_CONN_SAR_RETRY)) { + chan->partial_sdu_len += skb->len; - if (pi->partial_sdu_len > pi->imtu) + if (chan->partial_sdu_len > pi->imtu) goto drop; - if (pi->partial_sdu_len != pi->sdu_len) + if (chan->partial_sdu_len != chan->sdu_len) goto drop; - memcpy(skb_put(pi->sdu, skb->len), skb->data, skb->len); + memcpy(skb_put(chan->sdu, skb->len), skb->data, skb->len); } - _skb = skb_clone(pi->sdu, GFP_ATOMIC); + _skb = skb_clone(chan->sdu, GFP_ATOMIC); if (!_skb) { - pi->conn_state |= L2CAP_CONN_SAR_RETRY; + chan->conn_state |= L2CAP_CONN_SAR_RETRY; return -ENOMEM; } - err = sock_queue_rcv_skb(sk, _skb); + err = sock_queue_rcv_skb(chan->sk, _skb); if (err < 0) { kfree_skb(_skb); - pi->conn_state |= L2CAP_CONN_SAR_RETRY; + chan->conn_state |= L2CAP_CONN_SAR_RETRY; return err; } - pi->conn_state &= ~L2CAP_CONN_SAR_RETRY; - pi->conn_state &= ~L2CAP_CONN_SAR_SDU; + chan->conn_state &= ~L2CAP_CONN_SAR_RETRY; + chan->conn_state &= ~L2CAP_CONN_SAR_SDU; - kfree_skb(pi->sdu); + kfree_skb(chan->sdu); break; } @@ -2878,51 +2956,50 @@ static int l2cap_ertm_reassembly_sdu(struct sock *sk, struct sk_buff *skb, u16 c return 0; drop: - kfree_skb(pi->sdu); - pi->sdu = NULL; + kfree_skb(chan->sdu); + chan->sdu = NULL; disconnect: - l2cap_send_disconn_req(pi->conn, sk, ECONNRESET); + l2cap_send_disconn_req(pi->conn, chan, ECONNRESET); kfree_skb(skb); return 0; } -static int l2cap_try_push_rx_skb(struct sock *sk) +static int l2cap_try_push_rx_skb(struct l2cap_chan *chan) { - struct l2cap_pinfo *pi = l2cap_pi(sk); struct sk_buff *skb; u16 control; int err; - while ((skb = skb_dequeue(BUSY_QUEUE(sk)))) { + while ((skb = skb_dequeue(&chan->busy_q))) { control = bt_cb(skb)->sar << L2CAP_CTRL_SAR_SHIFT; - err = l2cap_ertm_reassembly_sdu(sk, skb, control); + err = l2cap_ertm_reassembly_sdu(chan, skb, control); if (err < 0) { - skb_queue_head(BUSY_QUEUE(sk), skb); + skb_queue_head(&chan->busy_q, skb); return -EBUSY; } - pi->buffer_seq = (pi->buffer_seq + 1) % 64; + chan->buffer_seq = (chan->buffer_seq + 1) % 64; } - if (!(pi->conn_state & L2CAP_CONN_RNR_SENT)) + if (!(chan->conn_state & L2CAP_CONN_RNR_SENT)) goto done; - control = pi->buffer_seq << L2CAP_CTRL_REQSEQ_SHIFT; + control = chan->buffer_seq << L2CAP_CTRL_REQSEQ_SHIFT; control |= L2CAP_SUPER_RCV_READY | L2CAP_CTRL_POLL; - l2cap_send_sframe(pi, control); - l2cap_pi(sk)->retry_count = 1; + l2cap_send_sframe(chan, control); + chan->retry_count = 1; - del_timer(&pi->retrans_timer); + del_timer(&chan->retrans_timer); __mod_monitor_timer(); - l2cap_pi(sk)->conn_state |= L2CAP_CONN_WAIT_F; + chan->conn_state |= L2CAP_CONN_WAIT_F; done: - pi->conn_state &= ~L2CAP_CONN_LOCAL_BUSY; - pi->conn_state &= ~L2CAP_CONN_RNR_SENT; + chan->conn_state &= ~L2CAP_CONN_LOCAL_BUSY; + chan->conn_state &= ~L2CAP_CONN_RNR_SENT; - BT_DBG("sk %p, Exit local busy", sk); + BT_DBG("chan %p, Exit local busy", chan); return 0; } @@ -2930,21 +3007,21 @@ done: static void l2cap_busy_work(struct work_struct *work) { DECLARE_WAITQUEUE(wait, current); - struct l2cap_pinfo *pi = - container_of(work, struct l2cap_pinfo, busy_work); - struct sock *sk = (struct sock *)pi; + struct l2cap_chan *chan = + container_of(work, struct l2cap_chan, busy_work); + struct sock *sk = chan->sk; int n_tries = 0, timeo = HZ/5, err; struct sk_buff *skb; lock_sock(sk); add_wait_queue(sk_sleep(sk), &wait); - while ((skb = skb_peek(BUSY_QUEUE(sk)))) { + while ((skb = skb_peek(&chan->busy_q))) { set_current_state(TASK_INTERRUPTIBLE); if (n_tries++ > L2CAP_LOCAL_BUSY_TRIES) { err = -EBUSY; - l2cap_send_disconn_req(pi->conn, sk, EBUSY); + l2cap_send_disconn_req(l2cap_pi(sk)->conn, chan, EBUSY); break; } @@ -2964,7 +3041,7 @@ static void l2cap_busy_work(struct work_struct *work) if (err) break; - if (l2cap_try_push_rx_skb(sk) == 0) + if (l2cap_try_push_rx_skb(chan) == 0) break; } @@ -2974,48 +3051,47 @@ static void l2cap_busy_work(struct work_struct *work) release_sock(sk); } -static int l2cap_push_rx_skb(struct sock *sk, struct sk_buff *skb, u16 control) +static int l2cap_push_rx_skb(struct l2cap_chan *chan, struct sk_buff *skb, u16 control) { - struct l2cap_pinfo *pi = l2cap_pi(sk); int sctrl, err; - if (pi->conn_state & L2CAP_CONN_LOCAL_BUSY) { + if (chan->conn_state & L2CAP_CONN_LOCAL_BUSY) { bt_cb(skb)->sar = control >> L2CAP_CTRL_SAR_SHIFT; - __skb_queue_tail(BUSY_QUEUE(sk), skb); - return l2cap_try_push_rx_skb(sk); + __skb_queue_tail(&chan->busy_q, skb); + return l2cap_try_push_rx_skb(chan); } - err = l2cap_ertm_reassembly_sdu(sk, skb, control); + err = l2cap_ertm_reassembly_sdu(chan, skb, control); if (err >= 0) { - pi->buffer_seq = (pi->buffer_seq + 1) % 64; + chan->buffer_seq = (chan->buffer_seq + 1) % 64; return err; } /* Busy Condition */ - BT_DBG("sk %p, Enter local busy", sk); + BT_DBG("chan %p, Enter local busy", chan); - pi->conn_state |= L2CAP_CONN_LOCAL_BUSY; + chan->conn_state |= L2CAP_CONN_LOCAL_BUSY; bt_cb(skb)->sar = control >> L2CAP_CTRL_SAR_SHIFT; - __skb_queue_tail(BUSY_QUEUE(sk), skb); + __skb_queue_tail(&chan->busy_q, skb); - sctrl = pi->buffer_seq << L2CAP_CTRL_REQSEQ_SHIFT; + sctrl = chan->buffer_seq << L2CAP_CTRL_REQSEQ_SHIFT; sctrl |= L2CAP_SUPER_RCV_NOT_READY; - l2cap_send_sframe(pi, sctrl); + l2cap_send_sframe(chan, sctrl); - pi->conn_state |= L2CAP_CONN_RNR_SENT; + chan->conn_state |= L2CAP_CONN_RNR_SENT; - del_timer(&pi->ack_timer); + del_timer(&chan->ack_timer); - queue_work(_busy_wq, &pi->busy_work); + queue_work(_busy_wq, &chan->busy_work); return err; } -static int l2cap_streaming_reassembly_sdu(struct sock *sk, struct sk_buff *skb, u16 control) +static int l2cap_streaming_reassembly_sdu(struct l2cap_chan *chan, struct sk_buff *skb, u16 control) { - struct l2cap_pinfo *pi = l2cap_pi(sk); + struct l2cap_pinfo *pi = l2cap_pi(chan->sk); struct sk_buff *_skb; int err = -EINVAL; @@ -3026,80 +3102,80 @@ static int l2cap_streaming_reassembly_sdu(struct sock *sk, struct sk_buff *skb, switch (control & L2CAP_CTRL_SAR) { case L2CAP_SDU_UNSEGMENTED: - if (pi->conn_state & L2CAP_CONN_SAR_SDU) { - kfree_skb(pi->sdu); + if (chan->conn_state & L2CAP_CONN_SAR_SDU) { + kfree_skb(chan->sdu); break; } - err = sock_queue_rcv_skb(sk, skb); + err = sock_queue_rcv_skb(chan->sk, skb); if (!err) return 0; break; case L2CAP_SDU_START: - if (pi->conn_state & L2CAP_CONN_SAR_SDU) { - kfree_skb(pi->sdu); + if (chan->conn_state & L2CAP_CONN_SAR_SDU) { + kfree_skb(chan->sdu); break; } - pi->sdu_len = get_unaligned_le16(skb->data); + chan->sdu_len = get_unaligned_le16(skb->data); skb_pull(skb, 2); - if (pi->sdu_len > pi->imtu) { + if (chan->sdu_len > pi->imtu) { err = -EMSGSIZE; break; } - pi->sdu = bt_skb_alloc(pi->sdu_len, GFP_ATOMIC); - if (!pi->sdu) { + chan->sdu = bt_skb_alloc(chan->sdu_len, GFP_ATOMIC); + if (!chan->sdu) { err = -ENOMEM; break; } - memcpy(skb_put(pi->sdu, skb->len), skb->data, skb->len); + memcpy(skb_put(chan->sdu, skb->len), skb->data, skb->len); - pi->conn_state |= L2CAP_CONN_SAR_SDU; - pi->partial_sdu_len = skb->len; + chan->conn_state |= L2CAP_CONN_SAR_SDU; + chan->partial_sdu_len = skb->len; err = 0; break; case L2CAP_SDU_CONTINUE: - if (!(pi->conn_state & L2CAP_CONN_SAR_SDU)) + if (!(chan->conn_state & L2CAP_CONN_SAR_SDU)) break; - memcpy(skb_put(pi->sdu, skb->len), skb->data, skb->len); + memcpy(skb_put(chan->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); + chan->partial_sdu_len += skb->len; + if (chan->partial_sdu_len > chan->sdu_len) + kfree_skb(chan->sdu); else err = 0; break; case L2CAP_SDU_END: - if (!(pi->conn_state & L2CAP_CONN_SAR_SDU)) + if (!(chan->conn_state & L2CAP_CONN_SAR_SDU)) break; - memcpy(skb_put(pi->sdu, skb->len), skb->data, skb->len); + memcpy(skb_put(chan->sdu, skb->len), skb->data, skb->len); - pi->conn_state &= ~L2CAP_CONN_SAR_SDU; - pi->partial_sdu_len += skb->len; + chan->conn_state &= ~L2CAP_CONN_SAR_SDU; + chan->partial_sdu_len += skb->len; - if (pi->partial_sdu_len > pi->imtu) + if (chan->partial_sdu_len > pi->imtu) goto drop; - if (pi->partial_sdu_len == pi->sdu_len) { - _skb = skb_clone(pi->sdu, GFP_ATOMIC); - err = sock_queue_rcv_skb(sk, _skb); + if (chan->partial_sdu_len == chan->sdu_len) { + _skb = skb_clone(chan->sdu, GFP_ATOMIC); + err = sock_queue_rcv_skb(chan->sk, _skb); if (err < 0) kfree_skb(_skb); } err = 0; drop: - kfree_skb(pi->sdu); + kfree_skb(chan->sdu); break; } @@ -3107,31 +3183,30 @@ drop: return err; } -static void l2cap_check_srej_gap(struct sock *sk, u8 tx_seq) +static void l2cap_check_srej_gap(struct l2cap_chan *chan, u8 tx_seq) { struct sk_buff *skb; u16 control; - while ((skb = skb_peek(SREJ_QUEUE(sk)))) { + while ((skb = skb_peek(&chan->srej_q))) { if (bt_cb(skb)->tx_seq != tx_seq) break; - skb = skb_dequeue(SREJ_QUEUE(sk)); + skb = skb_dequeue(&chan->srej_q); control = bt_cb(skb)->sar << L2CAP_CTRL_SAR_SHIFT; - l2cap_ertm_reassembly_sdu(sk, skb, control); - l2cap_pi(sk)->buffer_seq_srej = - (l2cap_pi(sk)->buffer_seq_srej + 1) % 64; + l2cap_ertm_reassembly_sdu(chan, skb, control); + chan->buffer_seq_srej = + (chan->buffer_seq_srej + 1) % 64; tx_seq = (tx_seq + 1) % 64; } } -static void l2cap_resend_srejframe(struct sock *sk, u8 tx_seq) +static void l2cap_resend_srejframe(struct l2cap_chan *chan, u8 tx_seq) { - struct l2cap_pinfo *pi = l2cap_pi(sk); struct srej_list *l, *tmp; u16 control; - list_for_each_entry_safe(l, tmp, SREJ_LIST(sk), list) { + list_for_each_entry_safe(l, tmp, &chan->srej_l, list) { if (l->tx_seq == tx_seq) { list_del(&l->list); kfree(l); @@ -3139,34 +3214,33 @@ static void l2cap_resend_srejframe(struct sock *sk, u8 tx_seq) } control = L2CAP_SUPER_SELECT_REJECT; control |= l->tx_seq << L2CAP_CTRL_REQSEQ_SHIFT; - l2cap_send_sframe(pi, control); + l2cap_send_sframe(chan, control); list_del(&l->list); - list_add_tail(&l->list, SREJ_LIST(sk)); + list_add_tail(&l->list, &chan->srej_l); } } -static void l2cap_send_srejframe(struct sock *sk, u8 tx_seq) +static void l2cap_send_srejframe(struct l2cap_chan *chan, u8 tx_seq) { - struct l2cap_pinfo *pi = l2cap_pi(sk); struct srej_list *new; u16 control; - while (tx_seq != pi->expected_tx_seq) { + while (tx_seq != chan->expected_tx_seq) { control = L2CAP_SUPER_SELECT_REJECT; - control |= pi->expected_tx_seq << L2CAP_CTRL_REQSEQ_SHIFT; - l2cap_send_sframe(pi, control); + control |= chan->expected_tx_seq << L2CAP_CTRL_REQSEQ_SHIFT; + l2cap_send_sframe(chan, control); new = kzalloc(sizeof(struct srej_list), GFP_ATOMIC); - new->tx_seq = pi->expected_tx_seq; - pi->expected_tx_seq = (pi->expected_tx_seq + 1) % 64; - list_add_tail(&new->list, SREJ_LIST(sk)); + new->tx_seq = chan->expected_tx_seq; + chan->expected_tx_seq = (chan->expected_tx_seq + 1) % 64; + list_add_tail(&new->list, &chan->srej_l); } - pi->expected_tx_seq = (pi->expected_tx_seq + 1) % 64; + chan->expected_tx_seq = (chan->expected_tx_seq + 1) % 64; } -static inline int l2cap_data_channel_iframe(struct sock *sk, u16 rx_control, struct sk_buff *skb) +static inline int l2cap_data_channel_iframe(struct l2cap_chan *chan, u16 rx_control, struct sk_buff *skb) { - struct l2cap_pinfo *pi = l2cap_pi(sk); + struct l2cap_pinfo *pi = l2cap_pi(chan->sk); u8 tx_seq = __get_txseq(rx_control); u8 req_seq = __get_reqseq(rx_control); u8 sar = rx_control >> L2CAP_CTRL_SAR_SHIFT; @@ -3174,72 +3248,72 @@ static inline int l2cap_data_channel_iframe(struct sock *sk, u16 rx_control, str int num_to_ack = (pi->tx_win/6) + 1; int err = 0; - BT_DBG("sk %p len %d tx_seq %d rx_control 0x%4.4x", sk, skb->len, tx_seq, - rx_control); + BT_DBG("chan %p len %d tx_seq %d rx_control 0x%4.4x", chan, skb->len, + tx_seq, rx_control); if (L2CAP_CTRL_FINAL & rx_control && - l2cap_pi(sk)->conn_state & L2CAP_CONN_WAIT_F) { - del_timer(&pi->monitor_timer); - if (pi->unacked_frames > 0) + chan->conn_state & L2CAP_CONN_WAIT_F) { + del_timer(&chan->monitor_timer); + if (chan->unacked_frames > 0) __mod_retrans_timer(); - pi->conn_state &= ~L2CAP_CONN_WAIT_F; + chan->conn_state &= ~L2CAP_CONN_WAIT_F; } - pi->expected_ack_seq = req_seq; - l2cap_drop_acked_frames(sk); + chan->expected_ack_seq = req_seq; + l2cap_drop_acked_frames(chan); - if (tx_seq == pi->expected_tx_seq) + if (tx_seq == chan->expected_tx_seq) goto expected; - tx_seq_offset = (tx_seq - pi->buffer_seq) % 64; + tx_seq_offset = (tx_seq - chan->buffer_seq) % 64; if (tx_seq_offset < 0) tx_seq_offset += 64; /* invalid tx_seq */ if (tx_seq_offset >= pi->tx_win) { - l2cap_send_disconn_req(pi->conn, sk, ECONNRESET); + l2cap_send_disconn_req(pi->conn, chan, ECONNRESET); goto drop; } - if (pi->conn_state == L2CAP_CONN_LOCAL_BUSY) + if (chan->conn_state == L2CAP_CONN_LOCAL_BUSY) goto drop; - if (pi->conn_state & L2CAP_CONN_SREJ_SENT) { + if (chan->conn_state & L2CAP_CONN_SREJ_SENT) { struct srej_list *first; - first = list_first_entry(SREJ_LIST(sk), + first = list_first_entry(&chan->srej_l, 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); + l2cap_add_to_srej_queue(chan, skb, tx_seq, sar); + l2cap_check_srej_gap(chan, tx_seq); list_del(&first->list); kfree(first); - if (list_empty(SREJ_LIST(sk))) { - pi->buffer_seq = pi->buffer_seq_srej; - pi->conn_state &= ~L2CAP_CONN_SREJ_SENT; - l2cap_send_ack(pi); - BT_DBG("sk %p, Exit SREJ_SENT", sk); + if (list_empty(&chan->srej_l)) { + chan->buffer_seq = chan->buffer_seq_srej; + chan->conn_state &= ~L2CAP_CONN_SREJ_SENT; + l2cap_send_ack(chan); + BT_DBG("chan %p, Exit SREJ_SENT", chan); } } else { struct srej_list *l; /* duplicated tx_seq */ - if (l2cap_add_to_srej_queue(sk, skb, tx_seq, sar) < 0) + if (l2cap_add_to_srej_queue(chan, skb, tx_seq, sar) < 0) goto drop; - list_for_each_entry(l, SREJ_LIST(sk), list) { + list_for_each_entry(l, &chan->srej_l, list) { if (l->tx_seq == tx_seq) { - l2cap_resend_srejframe(sk, tx_seq); + l2cap_resend_srejframe(chan, tx_seq); return 0; } } - l2cap_send_srejframe(sk, tx_seq); + l2cap_send_srejframe(chan, tx_seq); } } else { expected_tx_seq_offset = - (pi->expected_tx_seq - pi->buffer_seq) % 64; + (chan->expected_tx_seq - chan->buffer_seq) % 64; if (expected_tx_seq_offset < 0) expected_tx_seq_offset += 64; @@ -3247,51 +3321,51 @@ static inline int l2cap_data_channel_iframe(struct sock *sk, u16 rx_control, str if (tx_seq_offset < expected_tx_seq_offset) goto drop; - pi->conn_state |= L2CAP_CONN_SREJ_SENT; + chan->conn_state |= L2CAP_CONN_SREJ_SENT; - BT_DBG("sk %p, Enter SREJ", sk); + BT_DBG("chan %p, Enter SREJ", chan); - INIT_LIST_HEAD(SREJ_LIST(sk)); - pi->buffer_seq_srej = pi->buffer_seq; + INIT_LIST_HEAD(&chan->srej_l); + chan->buffer_seq_srej = chan->buffer_seq; - __skb_queue_head_init(SREJ_QUEUE(sk)); - __skb_queue_head_init(BUSY_QUEUE(sk)); - l2cap_add_to_srej_queue(sk, skb, tx_seq, sar); + __skb_queue_head_init(&chan->srej_q); + __skb_queue_head_init(&chan->busy_q); + l2cap_add_to_srej_queue(chan, skb, tx_seq, sar); - pi->conn_state |= L2CAP_CONN_SEND_PBIT; + chan->conn_state |= L2CAP_CONN_SEND_PBIT; - l2cap_send_srejframe(sk, tx_seq); + l2cap_send_srejframe(chan, tx_seq); - del_timer(&pi->ack_timer); + del_timer(&chan->ack_timer); } return 0; expected: - pi->expected_tx_seq = (pi->expected_tx_seq + 1) % 64; + chan->expected_tx_seq = (chan->expected_tx_seq + 1) % 64; - if (pi->conn_state & L2CAP_CONN_SREJ_SENT) { + if (chan->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); + __skb_queue_tail(&chan->srej_q, skb); return 0; } - err = l2cap_push_rx_skb(sk, skb, rx_control); + err = l2cap_push_rx_skb(chan, skb, rx_control); if (err < 0) return 0; if (rx_control & L2CAP_CTRL_FINAL) { - if (pi->conn_state & L2CAP_CONN_REJ_ACT) - pi->conn_state &= ~L2CAP_CONN_REJ_ACT; + if (chan->conn_state & L2CAP_CONN_REJ_ACT) + chan->conn_state &= ~L2CAP_CONN_REJ_ACT; else - l2cap_retransmit_frames(sk); + l2cap_retransmit_frames(chan); } __mod_ack_timer(); - pi->num_acked = (pi->num_acked + 1) % num_to_ack; - if (pi->num_acked == num_to_ack - 1) - l2cap_send_ack(pi); + chan->num_acked = (chan->num_acked + 1) % num_to_ack; + if (chan->num_acked == num_to_ack - 1) + l2cap_send_ack(chan); return 0; @@ -3300,165 +3374,160 @@ drop: return 0; } -static inline void l2cap_data_channel_rrframe(struct sock *sk, u16 rx_control) +static inline void l2cap_data_channel_rrframe(struct l2cap_chan *chan, u16 rx_control) { - struct l2cap_pinfo *pi = l2cap_pi(sk); - - BT_DBG("sk %p, req_seq %d ctrl 0x%4.4x", sk, __get_reqseq(rx_control), + BT_DBG("chan %p, req_seq %d ctrl 0x%4.4x", chan, __get_reqseq(rx_control), rx_control); - pi->expected_ack_seq = __get_reqseq(rx_control); - l2cap_drop_acked_frames(sk); + chan->expected_ack_seq = __get_reqseq(rx_control); + l2cap_drop_acked_frames(chan); if (rx_control & L2CAP_CTRL_POLL) { - pi->conn_state |= L2CAP_CONN_SEND_FBIT; - if (pi->conn_state & L2CAP_CONN_SREJ_SENT) { - if ((pi->conn_state & L2CAP_CONN_REMOTE_BUSY) && - (pi->unacked_frames > 0)) + chan->conn_state |= L2CAP_CONN_SEND_FBIT; + if (chan->conn_state & L2CAP_CONN_SREJ_SENT) { + if ((chan->conn_state & L2CAP_CONN_REMOTE_BUSY) && + (chan->unacked_frames > 0)) __mod_retrans_timer(); - pi->conn_state &= ~L2CAP_CONN_REMOTE_BUSY; - l2cap_send_srejtail(sk); + chan->conn_state &= ~L2CAP_CONN_REMOTE_BUSY; + l2cap_send_srejtail(chan); } else { - l2cap_send_i_or_rr_or_rnr(sk); + l2cap_send_i_or_rr_or_rnr(chan); } } else if (rx_control & L2CAP_CTRL_FINAL) { - pi->conn_state &= ~L2CAP_CONN_REMOTE_BUSY; + chan->conn_state &= ~L2CAP_CONN_REMOTE_BUSY; - if (pi->conn_state & L2CAP_CONN_REJ_ACT) - pi->conn_state &= ~L2CAP_CONN_REJ_ACT; + if (chan->conn_state & L2CAP_CONN_REJ_ACT) + chan->conn_state &= ~L2CAP_CONN_REJ_ACT; else - l2cap_retransmit_frames(sk); + l2cap_retransmit_frames(chan); } else { - if ((pi->conn_state & L2CAP_CONN_REMOTE_BUSY) && - (pi->unacked_frames > 0)) + if ((chan->conn_state & L2CAP_CONN_REMOTE_BUSY) && + (chan->unacked_frames > 0)) __mod_retrans_timer(); - pi->conn_state &= ~L2CAP_CONN_REMOTE_BUSY; - if (pi->conn_state & L2CAP_CONN_SREJ_SENT) - l2cap_send_ack(pi); + chan->conn_state &= ~L2CAP_CONN_REMOTE_BUSY; + if (chan->conn_state & L2CAP_CONN_SREJ_SENT) + l2cap_send_ack(chan); else - l2cap_ertm_send(sk); + l2cap_ertm_send(chan); } } -static inline void l2cap_data_channel_rejframe(struct sock *sk, u16 rx_control) +static inline void l2cap_data_channel_rejframe(struct l2cap_chan *chan, u16 rx_control) { - struct l2cap_pinfo *pi = l2cap_pi(sk); u8 tx_seq = __get_reqseq(rx_control); - BT_DBG("sk %p, req_seq %d ctrl 0x%4.4x", sk, tx_seq, rx_control); + BT_DBG("chan %p, req_seq %d ctrl 0x%4.4x", chan, tx_seq, rx_control); - pi->conn_state &= ~L2CAP_CONN_REMOTE_BUSY; + chan->conn_state &= ~L2CAP_CONN_REMOTE_BUSY; - pi->expected_ack_seq = tx_seq; - l2cap_drop_acked_frames(sk); + chan->expected_ack_seq = tx_seq; + l2cap_drop_acked_frames(chan); if (rx_control & L2CAP_CTRL_FINAL) { - if (pi->conn_state & L2CAP_CONN_REJ_ACT) - pi->conn_state &= ~L2CAP_CONN_REJ_ACT; + if (chan->conn_state & L2CAP_CONN_REJ_ACT) + chan->conn_state &= ~L2CAP_CONN_REJ_ACT; else - l2cap_retransmit_frames(sk); + l2cap_retransmit_frames(chan); } else { - l2cap_retransmit_frames(sk); + l2cap_retransmit_frames(chan); - if (pi->conn_state & L2CAP_CONN_WAIT_F) - pi->conn_state |= L2CAP_CONN_REJ_ACT; + if (chan->conn_state & L2CAP_CONN_WAIT_F) + chan->conn_state |= L2CAP_CONN_REJ_ACT; } } -static inline void l2cap_data_channel_srejframe(struct sock *sk, u16 rx_control) +static inline void l2cap_data_channel_srejframe(struct l2cap_chan *chan, u16 rx_control) { - struct l2cap_pinfo *pi = l2cap_pi(sk); u8 tx_seq = __get_reqseq(rx_control); - BT_DBG("sk %p, req_seq %d ctrl 0x%4.4x", sk, tx_seq, rx_control); + BT_DBG("chan %p, req_seq %d ctrl 0x%4.4x", chan, tx_seq, rx_control); - pi->conn_state &= ~L2CAP_CONN_REMOTE_BUSY; + chan->conn_state &= ~L2CAP_CONN_REMOTE_BUSY; if (rx_control & L2CAP_CTRL_POLL) { - pi->expected_ack_seq = tx_seq; - l2cap_drop_acked_frames(sk); + chan->expected_ack_seq = tx_seq; + l2cap_drop_acked_frames(chan); - pi->conn_state |= L2CAP_CONN_SEND_FBIT; - l2cap_retransmit_one_frame(sk, tx_seq); + chan->conn_state |= L2CAP_CONN_SEND_FBIT; + l2cap_retransmit_one_frame(chan, tx_seq); - l2cap_ertm_send(sk); + l2cap_ertm_send(chan); - if (pi->conn_state & L2CAP_CONN_WAIT_F) { - pi->srej_save_reqseq = tx_seq; - pi->conn_state |= L2CAP_CONN_SREJ_ACT; + if (chan->conn_state & L2CAP_CONN_WAIT_F) { + chan->srej_save_reqseq = tx_seq; + chan->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; + if ((chan->conn_state & L2CAP_CONN_SREJ_ACT) && + chan->srej_save_reqseq == tx_seq) + chan->conn_state &= ~L2CAP_CONN_SREJ_ACT; else - l2cap_retransmit_one_frame(sk, tx_seq); + l2cap_retransmit_one_frame(chan, tx_seq); } else { - l2cap_retransmit_one_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; + l2cap_retransmit_one_frame(chan, tx_seq); + if (chan->conn_state & L2CAP_CONN_WAIT_F) { + chan->srej_save_reqseq = tx_seq; + chan->conn_state |= L2CAP_CONN_SREJ_ACT; } } } -static inline void l2cap_data_channel_rnrframe(struct sock *sk, u16 rx_control) +static inline void l2cap_data_channel_rnrframe(struct l2cap_chan *chan, u16 rx_control) { - struct l2cap_pinfo *pi = l2cap_pi(sk); u8 tx_seq = __get_reqseq(rx_control); - BT_DBG("sk %p, req_seq %d ctrl 0x%4.4x", sk, tx_seq, rx_control); + BT_DBG("chan %p, req_seq %d ctrl 0x%4.4x", chan, tx_seq, rx_control); - pi->conn_state |= L2CAP_CONN_REMOTE_BUSY; - pi->expected_ack_seq = tx_seq; - l2cap_drop_acked_frames(sk); + chan->conn_state |= L2CAP_CONN_REMOTE_BUSY; + chan->expected_ack_seq = tx_seq; + l2cap_drop_acked_frames(chan); if (rx_control & L2CAP_CTRL_POLL) - pi->conn_state |= L2CAP_CONN_SEND_FBIT; + chan->conn_state |= L2CAP_CONN_SEND_FBIT; - if (!(pi->conn_state & L2CAP_CONN_SREJ_SENT)) { - del_timer(&pi->retrans_timer); + if (!(chan->conn_state & L2CAP_CONN_SREJ_SENT)) { + del_timer(&chan->retrans_timer); if (rx_control & L2CAP_CTRL_POLL) - l2cap_send_rr_or_rnr(pi, L2CAP_CTRL_FINAL); + l2cap_send_rr_or_rnr(chan, L2CAP_CTRL_FINAL); return; } if (rx_control & L2CAP_CTRL_POLL) - l2cap_send_srejtail(sk); + l2cap_send_srejtail(chan); else - l2cap_send_sframe(pi, L2CAP_SUPER_RCV_READY); + l2cap_send_sframe(chan, L2CAP_SUPER_RCV_READY); } -static inline int l2cap_data_channel_sframe(struct sock *sk, u16 rx_control, struct sk_buff *skb) +static inline int l2cap_data_channel_sframe(struct l2cap_chan *chan, u16 rx_control, struct sk_buff *skb) { - BT_DBG("sk %p rx_control 0x%4.4x len %d", sk, rx_control, skb->len); + BT_DBG("chan %p rx_control 0x%4.4x len %d", chan, rx_control, skb->len); if (L2CAP_CTRL_FINAL & rx_control && - l2cap_pi(sk)->conn_state & L2CAP_CONN_WAIT_F) { - del_timer(&l2cap_pi(sk)->monitor_timer); - if (l2cap_pi(sk)->unacked_frames > 0) + chan->conn_state & L2CAP_CONN_WAIT_F) { + del_timer(&chan->monitor_timer); + if (chan->unacked_frames > 0) __mod_retrans_timer(); - l2cap_pi(sk)->conn_state &= ~L2CAP_CONN_WAIT_F; + chan->conn_state &= ~L2CAP_CONN_WAIT_F; } switch (rx_control & L2CAP_CTRL_SUPERVISE) { case L2CAP_SUPER_RCV_READY: - l2cap_data_channel_rrframe(sk, rx_control); + l2cap_data_channel_rrframe(chan, rx_control); break; case L2CAP_SUPER_REJECT: - l2cap_data_channel_rejframe(sk, rx_control); + l2cap_data_channel_rejframe(chan, rx_control); break; case L2CAP_SUPER_SELECT_REJECT: - l2cap_data_channel_srejframe(sk, rx_control); + l2cap_data_channel_srejframe(chan, rx_control); break; case L2CAP_SUPER_RCV_NOT_READY: - l2cap_data_channel_rnrframe(sk, rx_control); + l2cap_data_channel_rnrframe(chan, rx_control); break; } @@ -3468,6 +3537,7 @@ static inline int l2cap_data_channel_sframe(struct sock *sk, u16 rx_control, str static int l2cap_ertm_data_rcv(struct sock *sk, struct sk_buff *skb) { + struct l2cap_chan *chan = l2cap_pi(sk)->chan; struct l2cap_pinfo *pi = l2cap_pi(sk); u16 control; u8 req_seq; @@ -3492,41 +3562,41 @@ static int l2cap_ertm_data_rcv(struct sock *sk, struct sk_buff *skb) len -= 2; if (len > pi->mps) { - l2cap_send_disconn_req(pi->conn, sk, ECONNRESET); + l2cap_send_disconn_req(pi->conn, chan, ECONNRESET); goto drop; } req_seq = __get_reqseq(control); - req_seq_offset = (req_seq - pi->expected_ack_seq) % 64; + req_seq_offset = (req_seq - chan->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; + (chan->next_tx_seq - chan->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, ECONNRESET); + l2cap_send_disconn_req(pi->conn, chan, ECONNRESET); goto drop; } if (__is_iframe(control)) { if (len < 0) { - l2cap_send_disconn_req(pi->conn, sk, ECONNRESET); + l2cap_send_disconn_req(pi->conn, chan, ECONNRESET); goto drop; } - l2cap_data_channel_iframe(sk, control, skb); + l2cap_data_channel_iframe(chan, control, skb); } else { if (len != 0) { BT_ERR("%d", len); - l2cap_send_disconn_req(pi->conn, sk, ECONNRESET); + l2cap_send_disconn_req(pi->conn, chan, ECONNRESET); goto drop; } - l2cap_data_channel_sframe(sk, control, skb); + l2cap_data_channel_sframe(chan, control, skb); } return 0; @@ -3538,21 +3608,23 @@ drop: static inline int l2cap_data_channel(struct l2cap_conn *conn, u16 cid, struct sk_buff *skb) { + struct l2cap_chan *chan; struct sock *sk; struct l2cap_pinfo *pi; u16 control; u8 tx_seq; int len; - sk = l2cap_get_chan_by_scid(&conn->chan_list, cid); - if (!sk) { + chan = l2cap_get_chan_by_scid(conn, cid); + if (!chan) { BT_DBG("unknown cid 0x%4.4x", cid); goto drop; } + sk = chan->sk; pi = l2cap_pi(sk); - BT_DBG("sk %p, len %d", sk, skb->len); + BT_DBG("chan %p, len %d", chan, skb->len); if (sk->sk_state != BT_CONNECTED) goto drop; @@ -3600,17 +3672,17 @@ static inline int l2cap_data_channel(struct l2cap_conn *conn, u16 cid, struct sk tx_seq = __get_txseq(control); - if (pi->expected_tx_seq == tx_seq) - pi->expected_tx_seq = (pi->expected_tx_seq + 1) % 64; + if (chan->expected_tx_seq == tx_seq) + chan->expected_tx_seq = (chan->expected_tx_seq + 1) % 64; else - pi->expected_tx_seq = (tx_seq + 1) % 64; + chan->expected_tx_seq = (tx_seq + 1) % 64; - l2cap_streaming_reassembly_sdu(sk, skb, control); + l2cap_streaming_reassembly_sdu(chan, skb, control); goto done; default: - BT_DBG("sk %p: bad mode 0x%2.2x", sk, pi->mode); + BT_DBG("chan %p: bad mode 0x%2.2x", chan, pi->mode); break; } @@ -3654,6 +3726,36 @@ done: return 0; } +static inline int l2cap_att_channel(struct l2cap_conn *conn, __le16 cid, struct sk_buff *skb) +{ + struct sock *sk; + + sk = l2cap_get_sock_by_scid(0, cid, conn->src); + if (!sk) + goto drop; + + bh_lock_sock(sk); + + BT_DBG("sk %p, len %d", sk, skb->len); + + if (sk->sk_state != BT_BOUND && sk->sk_state != BT_CONNECTED) + goto drop; + + if (l2cap_pi(sk)->imtu < skb->len) + goto drop; + + if (!sock_queue_rcv_skb(sk, skb)) + goto done; + +drop: + kfree_skb(skb); + +done: + if (sk) + bh_unlock_sock(sk); + return 0; +} + static void l2cap_recv_frame(struct l2cap_conn *conn, struct sk_buff *skb) { struct l2cap_hdr *lh = (void *) skb->data; @@ -3683,6 +3785,10 @@ static void l2cap_recv_frame(struct l2cap_conn *conn, struct sk_buff *skb) l2cap_conless_channel(conn, psm, skb); break; + case L2CAP_CID_LE_DATA: + l2cap_att_channel(conn, cid, skb); + break; + default: l2cap_data_channel(conn, cid, skb); break; @@ -3786,20 +3892,19 @@ static inline void l2cap_check_encryption(struct sock *sk, u8 encrypt) static int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt) { - struct l2cap_chan_list *l; struct l2cap_conn *conn = hcon->l2cap_data; - struct sock *sk; + struct l2cap_chan *chan; if (!conn) return 0; - l = &conn->chan_list; - BT_DBG("conn %p", conn); - read_lock(&l->lock); + read_lock(&conn->chan_lock); + + list_for_each_entry(chan, &conn->chan_l, list) { + struct sock *sk = chan->sk; - for (sk = l->head; sk; sk = l2cap_pi(sk)->next_c) { bh_lock_sock(sk); if (l2cap_pi(sk)->conf_state & L2CAP_CONF_CONNECT_PEND) { @@ -3820,10 +3925,10 @@ static int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt) req.scid = cpu_to_le16(l2cap_pi(sk)->scid); req.psm = l2cap_pi(sk)->psm; - l2cap_pi(sk)->ident = l2cap_get_ident(conn); + chan->ident = l2cap_get_ident(conn); l2cap_pi(sk)->conf_state |= L2CAP_CONF_CONNECT_PEND; - l2cap_send_cmd(conn, l2cap_pi(sk)->ident, + l2cap_send_cmd(conn, chan->ident, L2CAP_CONN_REQ, sizeof(req), &req); } else { l2cap_sock_clear_timer(sk); @@ -3846,14 +3951,14 @@ static int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt) rsp.dcid = cpu_to_le16(l2cap_pi(sk)->scid); rsp.result = cpu_to_le16(result); rsp.status = cpu_to_le16(L2CAP_CS_NO_INFO); - l2cap_send_cmd(conn, l2cap_pi(sk)->ident, - L2CAP_CONN_RSP, sizeof(rsp), &rsp); + l2cap_send_cmd(conn, chan->ident, L2CAP_CONN_RSP, + sizeof(rsp), &rsp); } bh_unlock_sock(sk); } - read_unlock(&l->lock); + read_unlock(&conn->chan_lock); return 0; } @@ -3872,7 +3977,7 @@ static int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 fl if (!(flags & ACL_CONT)) { struct l2cap_hdr *hdr; - struct sock *sk; + struct l2cap_chan *chan; u16 cid; int len; @@ -3910,18 +4015,21 @@ static int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 fl goto drop; } - sk = l2cap_get_chan_by_scid(&conn->chan_list, cid); + chan = l2cap_get_chan_by_scid(conn, cid); - if (sk && l2cap_pi(sk)->imtu < len - L2CAP_HDR_SIZE) { - BT_ERR("Frame exceeding recv MTU (len %d, MTU %d)", - len, l2cap_pi(sk)->imtu); - bh_unlock_sock(sk); - l2cap_conn_unreliable(conn, ECOMM); - goto drop; - } + if (chan && chan->sk) { + struct sock *sk = chan->sk; - if (sk) + if (l2cap_pi(sk)->imtu < len - L2CAP_HDR_SIZE) { + BT_ERR("Frame exceeding recv MTU (len %d, " + "MTU %d)", len, + l2cap_pi(sk)->imtu); + bh_unlock_sock(sk); + l2cap_conn_unreliable(conn, ECOMM); + goto drop; + } bh_unlock_sock(sk); + } /* Allocate skb for the complete frame (with header) */ conn->rx_skb = bt_skb_alloc(len, GFP_ATOMIC); diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c index f77308e..473e597 100644 --- a/net/bluetooth/l2cap_sock.c +++ b/net/bluetooth/l2cap_sock.c @@ -269,7 +269,7 @@ static int l2cap_sock_listen(struct socket *sock, int backlog) goto done; } - if (!l2cap_pi(sk)->psm && !l2cap_pi(sk)->dcid) { + if (!l2cap_pi(sk)->psm && !l2cap_pi(sk)->scid) { bdaddr_t *src = &bt_sk(sk)->src; u16 psm; @@ -757,35 +757,37 @@ static int l2cap_sock_sendmsg(struct kiocb *iocb, struct socket *sock, struct ms case L2CAP_MODE_ERTM: case L2CAP_MODE_STREAMING: /* Entire SDU fits into one PDU */ - if (len <= pi->remote_mps) { + if (len <= pi->chan->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); + __skb_queue_tail(&pi->chan->tx_q, skb); - if (sk->sk_send_head == NULL) - sk->sk_send_head = skb; + if (pi->chan->tx_send_head == NULL) + pi->chan->tx_send_head = skb; } else { /* Segment SDU into multiples PDUs */ - err = l2cap_sar_segment_sdu(sk, msg, len); + err = l2cap_sar_segment_sdu(pi->chan, msg, len); if (err < 0) goto done; } if (pi->mode == L2CAP_MODE_STREAMING) { - l2cap_streaming_send(sk); - } else { - if ((pi->conn_state & L2CAP_CONN_REMOTE_BUSY) && - (pi->conn_state & L2CAP_CONN_WAIT_F)) { - err = len; - break; - } - err = l2cap_ertm_send(sk); + l2cap_streaming_send(pi->chan); + err = len; + break; + } + + if ((pi->chan->conn_state & L2CAP_CONN_REMOTE_BUSY) && + (pi->chan->conn_state & L2CAP_CONN_WAIT_F)) { + err = len; + break; } + err = l2cap_ertm_send(pi->chan); if (err >= 0) err = len; @@ -808,29 +810,7 @@ static int l2cap_sock_recvmsg(struct kiocb *iocb, struct socket *sock, struct ms lock_sock(sk); if (sk->sk_state == BT_CONNECT2 && bt_sk(sk)->defer_setup) { - struct l2cap_conn_rsp rsp; - struct l2cap_conn *conn = l2cap_pi(sk)->conn; - u8 buf[128]; - - sk->sk_state = BT_CONFIG; - - rsp.scid = cpu_to_le16(l2cap_pi(sk)->dcid); - rsp.dcid = cpu_to_le16(l2cap_pi(sk)->scid); - rsp.result = cpu_to_le16(L2CAP_CR_SUCCESS); - rsp.status = cpu_to_le16(L2CAP_CS_NO_INFO); - l2cap_send_cmd(l2cap_pi(sk)->conn, l2cap_pi(sk)->ident, - L2CAP_CONN_RSP, sizeof(rsp), &rsp); - - if (l2cap_pi(sk)->conf_state & L2CAP_CONF_REQ_SENT) { - release_sock(sk); - return 0; - } - - l2cap_pi(sk)->conf_state |= L2CAP_CONF_REQ_SENT; - l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ, - l2cap_build_conf_req(sk, buf), buf); - l2cap_pi(sk)->num_conf_req++; - + __l2cap_connect_rsp_defer(sk); release_sock(sk); return 0; } @@ -886,6 +866,7 @@ static void l2cap_sock_cleanup_listen(struct sock *parent) void __l2cap_sock_close(struct sock *sk, int reason) { struct l2cap_conn *conn = l2cap_pi(sk)->conn; + struct l2cap_chan *chan = l2cap_pi(sk)->chan; BT_DBG("sk %p state %d socket %p", sk, sk->sk_state, sk->sk_socket); @@ -900,9 +881,9 @@ void __l2cap_sock_close(struct sock *sk, int reason) sk->sk_type == SOCK_STREAM) && conn->hcon->type == ACL_LINK) { l2cap_sock_set_timer(sk, sk->sk_sndtimeo); - l2cap_send_disconn_req(conn, sk, reason); + l2cap_send_disconn_req(conn, chan, reason); } else - l2cap_chan_del(sk, reason); + l2cap_chan_del(chan, reason); break; case BT_CONNECT2: @@ -921,16 +902,16 @@ void __l2cap_sock_close(struct sock *sk, int reason) rsp.dcid = cpu_to_le16(l2cap_pi(sk)->scid); rsp.result = cpu_to_le16(result); rsp.status = cpu_to_le16(L2CAP_CS_NO_INFO); - l2cap_send_cmd(conn, l2cap_pi(sk)->ident, - L2CAP_CONN_RSP, sizeof(rsp), &rsp); + l2cap_send_cmd(conn, chan->ident, L2CAP_CONN_RSP, + sizeof(rsp), &rsp); } - l2cap_chan_del(sk, reason); + l2cap_chan_del(chan, reason); break; case BT_CONNECT: case BT_DISCONN: - l2cap_chan_del(sk, reason); + l2cap_chan_del(chan, reason); break; default: @@ -1035,12 +1016,7 @@ void l2cap_sock_init(struct sock *sk, struct sock *parent) } /* 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)); - skb_queue_head_init(BUSY_QUEUE(sk)); - INIT_LIST_HEAD(SREJ_LIST(sk)); } static struct proto l2cap_proto = { |