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Commit 68d7f0ce authored by Gustavo Padovan's avatar Gustavo Padovan Committed by Marcel Holtmann
Browse files

Bluetooth: Enable option to configure Max Transmission value via sockopt



With the sockopt extension we can set a per-channel MaxTx value.

Signed-off-by: default avatarGustavo F. Padovan <padovan@profusion.mobi>
Reviewed-by: default avatarJoão Paulo Rechi Vita <jprvita@profusion.mobi>
Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
parent 369ba302
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+2 −0
Original line number Diff line number Diff line
@@ -55,6 +55,7 @@ struct l2cap_options {
	__u16 flush_to;
	__u8  mode;
	__u8  fcs;
	__u8  max_tx;
	__u16 txwin_size;
};

@@ -340,6 +341,7 @@ struct l2cap_pinfo {
	__u8		ident;

	__u8		tx_win;
	__u8		max_tx;
	__u8		remote_tx_win;
	__u8		remote_max_tx;
	__u16		retrans_timeout;
+6 −1
Original line number Diff line number Diff line
@@ -783,6 +783,7 @@ static void l2cap_sock_init(struct sock *sk, struct sock *parent)
		pi->omtu = l2cap_pi(parent)->omtu;
		pi->mode = l2cap_pi(parent)->mode;
		pi->fcs  = l2cap_pi(parent)->fcs;
		pi->max_tx = l2cap_pi(parent)->max_tx;
		pi->tx_win = l2cap_pi(parent)->tx_win;
		pi->sec_level = l2cap_pi(parent)->sec_level;
		pi->role_switch = l2cap_pi(parent)->role_switch;
@@ -791,6 +792,7 @@ static void l2cap_sock_init(struct sock *sk, struct sock *parent)
		pi->imtu = L2CAP_DEFAULT_MTU;
		pi->omtu = 0;
		pi->mode = L2CAP_MODE_BASIC;
		pi->max_tx = max_transmit;
		pi->fcs  = L2CAP_FCS_CRC16;
		pi->tx_win = tx_window;
		pi->sec_level = BT_SECURITY_LOW;
@@ -1785,6 +1787,7 @@ static int l2cap_sock_setsockopt_old(struct socket *sock, int optname, char __us
		opts.flush_to = l2cap_pi(sk)->flush_to;
		opts.mode     = l2cap_pi(sk)->mode;
		opts.fcs      = l2cap_pi(sk)->fcs;
		opts.max_tx   = l2cap_pi(sk)->max_tx;
		opts.txwin_size = (__u16)l2cap_pi(sk)->tx_win;

		len = min_t(unsigned int, sizeof(opts), optlen);
@@ -1797,6 +1800,7 @@ static int l2cap_sock_setsockopt_old(struct socket *sock, int optname, char __us
		l2cap_pi(sk)->omtu = opts.omtu;
		l2cap_pi(sk)->mode = opts.mode;
		l2cap_pi(sk)->fcs  = opts.fcs;
		l2cap_pi(sk)->max_tx = opts.max_tx;
		l2cap_pi(sk)->tx_win = (__u8)opts.txwin_size;
		break;

@@ -1912,6 +1916,7 @@ static int l2cap_sock_getsockopt_old(struct socket *sock, int optname, char __us
		opts.flush_to = l2cap_pi(sk)->flush_to;
		opts.mode     = l2cap_pi(sk)->mode;
		opts.fcs      = l2cap_pi(sk)->fcs;
		opts.max_tx   = l2cap_pi(sk)->max_tx;
		opts.txwin_size = (__u16)l2cap_pi(sk)->tx_win;

		len = min_t(unsigned int, len, sizeof(opts));
@@ -2331,7 +2336,7 @@ done:
	case L2CAP_MODE_ERTM:
		rfc.mode            = L2CAP_MODE_ERTM;
		rfc.txwin_size      = pi->tx_win;
		rfc.max_transmit    = max_transmit;
		rfc.max_transmit    = pi->max_tx;
		rfc.retrans_timeout = 0;
		rfc.monitor_timeout = 0;
		rfc.max_pdu_size    = cpu_to_le16(L2CAP_DEFAULT_MAX_PDU_SIZE);