On Thu, Nov 14, 2013 at 12:01:07PM +0100, Luigi Rizzo wrote: L> Hi, L> it would be useful to have a common place with the indication of L> NIC parameters such as number of tx/rx queues and their lengths. L> L> Various 10G drivers do include this information in various places L> in the softc, but there is no common place. L> L> I was wondering if there is any objection to either or both L> of these options: L> L> 1. four fields to the struct ifnet (field names are bikeshed material L> and irrelevant for the discussion): L> if_tx_queues, if_rx_queues, if_tx_slots, if_rx_slots L> L> 2. a sysctl-like get/set method for key-value pairs (key is always a L> string, value is possibly one of a few simple types such as L> INT64, UINT64, STRING) so that we extend the system in the future, L> e.g. to handle RSS, flow control and whatnot. L> Of course this also requires to settle on names of features. L> L> This is meant for low-frequency access to the parameters of the L> device, so performance is not an issue.
The API for drivers to express to the stack their capabilities is planned to be implemented soon. Andre has grant from FF for that. -- Totus tuus, Glebius. _______________________________________________ email@example.com mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"