diff options
| author |   Marcel Holtmann <marcel@holtmann.org> | 2009-05-02 22:31:10 -0700 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2009-08-22 14:50:07 -0700 |
| commit | c6b03cf986eab00e20d0dbc852b233bb83472138 (patch) | |
| tree | 94fe92aafca068e3eb1cd6f4c53a3c86801fe7e0 /net/bluetooth | |
| parent | Bluetooth: Add module option to enable L2CAP ERTM support (diff) | |
| download | linux-dev-c6b03cf986eab00e20d0dbc852b233bb83472138.tar.xz linux-dev-c6b03cf986eab00e20d0dbc852b233bb83472138.zip | |
Bluetooth: Allow setting of L2CAP ERTM via socket option
To enable Enhanced Retransmission mode it needs to be set via a socket
option. A different mode can be set on a socket, but on listen() and
connect() the mode is checked and ERTM is only allowed if it is enabled
via the module parameter.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net/bluetooth')
| -rw-r--r-- | net/bluetooth/l2cap.c | 37 |
1 files changed, 33 insertions, 4 deletions
diff --git a/net/bluetooth/l2cap.c b/net/bluetooth/l2cap.c index 810a3c1a4188..8a59e57d9df1 100644 --- a/net/bluetooth/l2cap.c +++ b/net/bluetooth/l2cap.c @@ -717,12 +717,16 @@ static void l2cap_sock_init(struct sock *sk, struct sock *parent) pi->imtu = l2cap_pi(parent)->imtu; pi->omtu = l2cap_pi(parent)->omtu; + pi->mode = l2cap_pi(parent)->mode; + pi->fcs = l2cap_pi(parent)->fcs; pi->sec_level = l2cap_pi(parent)->sec_level; pi->role_switch = l2cap_pi(parent)->role_switch; pi->force_reliable = l2cap_pi(parent)->force_reliable; } else { pi->imtu = L2CAP_DEFAULT_MTU; pi->omtu = 0; + pi->mode = L2CAP_MODE_BASIC; + pi->fcs = L2CAP_FCS_CRC16; pi->sec_level = BT_SECURITY_LOW; pi->role_switch = 0; pi->force_reliable = 0; @@ -958,6 +962,18 @@ static int l2cap_sock_connect(struct socket *sock, struct sockaddr *addr, int al goto done; } + switch (l2cap_pi(sk)->mode) { + case L2CAP_MODE_BASIC: + break; + case L2CAP_MODE_ERTM: + if (enable_ertm) + break; + /* fall through */ + default: + err = -ENOTSUPP; + goto done; + } + switch (sk->sk_state) { case BT_CONNECT: case BT_CONNECT2: @@ -1009,6 +1025,18 @@ static int l2cap_sock_listen(struct socket *sock, int backlog) goto done; } + switch (l2cap_pi(sk)->mode) { + case L2CAP_MODE_BASIC: + break; + case L2CAP_MODE_ERTM: + if (enable_ertm) + break; + /* fall through */ + default: + err = -ENOTSUPP; + goto done; + } + if (!l2cap_pi(sk)->psm) { bdaddr_t *src = &bt_sk(sk)->src; u16 psm; @@ -1259,7 +1287,7 @@ static int l2cap_sock_setsockopt_old(struct socket *sock, int optname, char __us opts.imtu = l2cap_pi(sk)->imtu; opts.omtu = l2cap_pi(sk)->omtu; opts.flush_to = l2cap_pi(sk)->flush_to; - opts.mode = L2CAP_MODE_BASIC; + opts.mode = l2cap_pi(sk)->mode; len = min_t(unsigned int, sizeof(opts), optlen); if (copy_from_user((char *) &opts, optval, len)) { @@ -1267,8 +1295,9 @@ static int l2cap_sock_setsockopt_old(struct socket *sock, int optname, char __us break; } - l2cap_pi(sk)->imtu = opts.imtu; - l2cap_pi(sk)->omtu = opts.omtu; + l2cap_pi(sk)->imtu = opts.imtu; + l2cap_pi(sk)->omtu = opts.omtu; + l2cap_pi(sk)->mode = opts.mode; break; case L2CAP_LM: @@ -1381,7 +1410,7 @@ static int l2cap_sock_getsockopt_old(struct socket *sock, int optname, char __us opts.imtu = l2cap_pi(sk)->imtu; opts.omtu = l2cap_pi(sk)->omtu; opts.flush_to = l2cap_pi(sk)->flush_to; - opts.mode = L2CAP_MODE_BASIC; + opts.mode = l2cap_pi(sk)->mode; len = min_t(unsigned int, len, sizeof(opts)); if (copy_to_user(optval, (char *) &opts, len)) |