On Wed, 20 May 2020 16:47:25 +0300 Igor Russkikh wrote: > From: Dmitry Bezrukov <dbezru...@marvell.com> > > This patch contains the following changes: > * add cfg->is_ptp (used for PTP enable/disable switch, which > is described in more details below); > * add cfg->tc_mode (A1 supports 2 HW modes only); > * setup queue to TC mapping based on TC mode on A2; > * remove hw_tx_tc_mode_get / hw_rx_tc_mode_get hw_ops. > > In the first generation of our hardware (A1), a whole traffic class is > consumed for PTP handling in FW (FW uses it to send the ptp data and to > send back timestamps). > Since this conflicts with QoS (user is unable to use the reserved TC2), > we suggest using module param to give the user a choice: disabling PTP > allows using all available TCs.
Is there really no way to get the config automatically chosen when user sets up TCs or does SIOCSHWTSTAMP? It's fine to return -EOPNOTSUPP when too many things are enabled, but user having to set module parameters upfront is quite painful.
