diff options
| -rw-r--r-- | net/bluetooth/l2cap.c | 166 |
1 files changed, 118 insertions, 48 deletions
diff --git a/net/bluetooth/l2cap.c b/net/bluetooth/l2cap.c index 6e180d255505..2e3abdfbd69d 100644 --- a/net/bluetooth/l2cap.c +++ b/net/bluetooth/l2cap.c @@ -55,7 +55,7 @@ #define BT_DBG(D...) #endif -#define VERSION "2.9" +#define VERSION "2.10" static u32 l2cap_feat_mask = 0x0000; @@ -253,6 +253,21 @@ static void l2cap_chan_del(struct sock *sk, int err) sk->sk_state_change(sk); } +/* Service level security */ +static inline int l2cap_check_link_mode(struct sock *sk) +{ + struct l2cap_conn *conn = l2cap_pi(sk)->conn; + + if ((l2cap_pi(sk)->link_mode & L2CAP_LM_ENCRYPT) || + (l2cap_pi(sk)->link_mode & L2CAP_LM_SECURE)) + return hci_conn_encrypt(conn->hcon); + + if (l2cap_pi(sk)->link_mode & L2CAP_LM_AUTH) + return hci_conn_auth(conn->hcon); + + return 1; +} + static inline u8 l2cap_get_ident(struct l2cap_conn *conn) { u8 id; @@ -287,6 +302,34 @@ static inline int l2cap_send_cmd(struct l2cap_conn *conn, u8 ident, u8 code, u16 return hci_send_acl(conn->hcon, skb, 0); } +static void l2cap_do_start(struct sock *sk) +{ + struct l2cap_conn *conn = l2cap_pi(sk)->conn; + + if (conn->info_state & L2CAP_INFO_FEAT_MASK_REQ_SENT) { + struct l2cap_conn_req req; + req.scid = cpu_to_le16(l2cap_pi(sk)->scid); + req.psm = l2cap_pi(sk)->psm; + + l2cap_pi(sk)->ident = l2cap_get_ident(conn); + + l2cap_send_cmd(conn, l2cap_pi(sk)->ident, + L2CAP_CONN_REQ, sizeof(req), &req); + } else { + struct l2cap_info_req req; + req.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(req), &req); + } +} + /* ---- L2CAP connections ---- */ static void l2cap_conn_start(struct l2cap_conn *conn) { @@ -301,16 +344,35 @@ static void l2cap_conn_start(struct l2cap_conn *conn) bh_lock_sock(sk); if (sk->sk_type != SOCK_SEQPACKET) { - l2cap_sock_clear_timer(sk); - sk->sk_state = BT_CONNECTED; - sk->sk_state_change(sk); - } else if (sk->sk_state == BT_CONNECT) { + bh_unlock_sock(sk); + continue; + } + + if (sk->sk_state == BT_CONNECT) { struct l2cap_conn_req req; - l2cap_pi(sk)->ident = l2cap_get_ident(conn); req.scid = cpu_to_le16(l2cap_pi(sk)->scid); req.psm = l2cap_pi(sk)->psm; + + l2cap_pi(sk)->ident = l2cap_get_ident(conn); + l2cap_send_cmd(conn, l2cap_pi(sk)->ident, L2CAP_CONN_REQ, sizeof(req), &req); + } else if (sk->sk_state == BT_CONNECT2) { + struct l2cap_conn_rsp rsp; + rsp.scid = cpu_to_le16(l2cap_pi(sk)->dcid); + rsp.dcid = cpu_to_le16(l2cap_pi(sk)->scid); + + if (l2cap_check_link_mode(sk)) { + sk->sk_state = BT_CONFIG; + rsp.result = cpu_to_le16(L2CAP_CR_SUCCESS); + rsp.status = cpu_to_le16(L2CAP_CS_NO_INFO); + } else { + rsp.result = cpu_to_le16(L2CAP_CR_PEND); + rsp.status = cpu_to_le16(L2CAP_CS_AUTHEN_PEND); + } + + l2cap_send_cmd(conn, l2cap_pi(sk)->ident, + L2CAP_CONN_RSP, sizeof(rsp), &rsp); } bh_unlock_sock(sk); @@ -321,22 +383,27 @@ static void l2cap_conn_start(struct l2cap_conn *conn) static void l2cap_conn_ready(struct l2cap_conn *conn) { - BT_DBG("conn %p", conn); + struct l2cap_chan_list *l = &conn->chan_list; + struct sock *sk; - if (conn->chan_list.head || !hlist_empty(&l2cap_sk_list.head)) { - struct l2cap_info_req req; + BT_DBG("conn %p", conn); - req.type = cpu_to_le16(L2CAP_IT_FEAT_MASK); + read_lock(&l->lock); - conn->info_state |= L2CAP_INFO_FEAT_MASK_REQ_SENT; - conn->info_ident = l2cap_get_ident(conn); + for (sk = l->head; sk; sk = l2cap_pi(sk)->next_c) { + bh_lock_sock(sk); - mod_timer(&conn->info_timer, - jiffies + msecs_to_jiffies(L2CAP_INFO_TIMEOUT)); + if (sk->sk_type != SOCK_SEQPACKET) { + l2cap_sock_clear_timer(sk); + sk->sk_state = BT_CONNECTED; + sk->sk_state_change(sk); + } else if (sk->sk_state == BT_CONNECT) + l2cap_do_start(sk); - l2cap_send_cmd(conn, conn->info_ident, - L2CAP_INFO_REQ, sizeof(req), &req); + bh_unlock_sock(sk); } + + read_unlock(&l->lock); } /* Notify sockets that we cannot guaranty reliability anymore */ @@ -729,22 +796,11 @@ static int l2cap_do_connect(struct sock *sk) l2cap_sock_set_timer(sk, sk->sk_sndtimeo); if (hcon->state == BT_CONNECTED) { - if (!(conn->info_state & L2CAP_INFO_FEAT_MASK_REQ_SENT)) { - l2cap_conn_ready(conn); - goto done; - } - - if (sk->sk_type == SOCK_SEQPACKET) { - struct l2cap_conn_req req; - l2cap_pi(sk)->ident = l2cap_get_ident(conn); - req.scid = cpu_to_le16(l2cap_pi(sk)->scid); - req.psm = l2cap_pi(sk)->psm; - l2cap_send_cmd(conn, l2cap_pi(sk)->ident, - L2CAP_CONN_REQ, sizeof(req), &req); - } else { + if (sk->sk_type != SOCK_SEQPACKET) { l2cap_sock_clear_timer(sk); sk->sk_state = BT_CONNECTED; - } + } else + l2cap_do_start(sk); } done: @@ -1477,7 +1533,7 @@ static inline int l2cap_connect_req(struct l2cap_conn *conn, struct l2cap_cmd_hd struct l2cap_conn_req *req = (struct l2cap_conn_req *) data; struct l2cap_conn_rsp rsp; struct sock *sk, *parent; - int result = 0, status = 0; + int result, status = 0; u16 dcid = 0, scid = __le16_to_cpu(req->scid); __le16 psm = req->psm; @@ -1526,25 +1582,24 @@ static inline int l2cap_connect_req(struct l2cap_conn *conn, struct l2cap_cmd_hd l2cap_sock_set_timer(sk, sk->sk_sndtimeo); - /* Service level security */ - result = L2CAP_CR_PEND; - status = L2CAP_CS_AUTHEN_PEND; - sk->sk_state = BT_CONNECT2; l2cap_pi(sk)->ident = cmd->ident; - if ((l2cap_pi(sk)->link_mode & L2CAP_LM_ENCRYPT) || - (l2cap_pi(sk)->link_mode & L2CAP_LM_SECURE)) { - if (!hci_conn_encrypt(conn->hcon)) - goto done; - } else if (l2cap_pi(sk)->link_mode & L2CAP_LM_AUTH) { - if (!hci_conn_auth(conn->hcon)) - goto done; + if (conn->info_state & L2CAP_INFO_FEAT_MASK_REQ_SENT) { + if (l2cap_check_link_mode(sk)) { + 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; } - sk->sk_state = BT_CONFIG; - result = status = 0; - -done: write_unlock_bh(&list->lock); response: @@ -1556,6 +1611,21 @@ sendresp: 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; } @@ -1664,9 +1734,9 @@ static inline int l2cap_config_req(struct l2cap_conn *conn, struct l2cap_cmd_hdr } if (!(l2cap_pi(sk)->conf_state & L2CAP_CONF_REQ_SENT)) { - u8 req[64]; + u8 buf[64]; l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ, - l2cap_build_conf_req(sk, req), req); + l2cap_build_conf_req(sk, buf), buf); } unlock: |