1.\" 2.\" This file and its contents are supplied under the terms of the 3.\" Common Development and Distribution License ("CDDL"), version 1.0. 4.\" You may only use this file in accordance with the terms of version 5.\" 1.0 of the CDDL. 6.\" 7.\" A full copy of the text of the CDDL should have accompanied this 8.\" source. A copy of the CDDL is also available via the Internet at 9.\" http://www.illumos.org/license/CDDL. 10.\" 11.\" 12.\" Copyright 2016 Joyent, Inc. 13.\" 14.Dd June 02, 2016 15.Dt MAC_TX_UPDATE 9F 16.Os 17.Sh NAME 18.Nm mac_tx_update 19.Nd indicate that a device can transmit again 20.Sh SYNOPSIS 21.In sys/mac_provider.h 22.Ft void 23.Fo mac_tx_update 24.Fa "mac_handle_t mh" 25.Fc 26.Sh INTERFACE LEVEL 27illumos DDI specific 28.Sh PARAMETERS 29.Bl -tag -width Fa 30.It Fa mh 31The MAC handle obtained from a call to 32.Xr mac_register 9F . 33.El 34.Sh DESCRIPTION 35The 36.Fn mac_tx_update 37function is used by device drivers to indicate that the device 38represented by the handle 39.Fa mh 40can transmit data again. 41It should only be called after the device driver has returned data from its 42.Xr mc_tx 9E 43endpoint. 44For more information on when this should be called, see both 45.Xr mc_tx 9E 46and the 47.Sx Transmitting Data and Back Pressure 48section of 49.Xr mac 9E . 50.Pp 51Device drivers should not hold any of their own locks when calling into 52this function. 53See the 54.Sx MAC Callbacks 55section of 56.Xr mac 9E 57for more information. 58.Sh CONTEXT 59The 60.Fn mac_tx_update 61function may be called from 62.Sy user , 63.Sy kernel , 64or 65.Sy interrupt 66context. 67.Sh SEE ALSO 68.Xr mac 9E , 69.Xr mc_tx 9E , 70.Xr mac_register 9F 71