src-test2/sys/dev/vr, branch release/11.0.0

Remove taskqueue_enqueue_fast().

2016-03-01T17:47:32Z

taskqueue_enqueue() was changed to support both fast and non-fast taskqueues 10 years ago in r154167. It has been a compat shim ever since. It's time for the compat shim to go. Submitted by: Howard Su Reviewed by: sephe Differential Revision: https://reviews.freebsd.org/D5131

Mechanically convert to if_inc_counter().

2014-09-18T20:17:27Z

Use define from if_var.h to access a field inside struct if_data,

2014-08-30T19:55:54Z

that resides in struct ifnet. Sponsored by: Nginx, Inc.

Fix various NIC drivers to properly cleanup static DMA resources.

2014-06-11T14:53:58Z

In particular, don't check the value of the bus_dma map against NULL to determine if either bus_dmamem_alloc() or bus_dmamap_load() succeeded. Instead, assume that bus_dmamap_load() succeeeded (and thus that bus_dmamap_unload() should be called) if the bus address for a resource is non-zero, and assume that bus_dmamem_alloc() succeeded (and thus that bus_dmamem_free() should be called) if the virtual address for a resource is not NULL. In many cases these bugs could result in leaks when a driver was detached. Reviewed by: yongari MFC after: 2 weeks

The r48589 promised to remove implicit inclusion of if_var.h soon. Prepare

2013-10-26T17:58:36Z

to this event, adding if_var.h to files that do need it. Also, include all includes that now are included due to implicit pollution via if_var.h Sponsored by: Netflix Sponsored by: Nginx, Inc.

Mechanically substitute flags from historic mbuf allocator with

2012-12-04T09:32:43Z

malloc(9) flags in sys/dev.

Remove duplicate const specifiers in many drivers (I hope I got all of

2012-11-05T19:16:27Z

them, please let me know if not). Most of these are of the form: static const struct bzzt_type { [...list of members...] } const bzzt_devs[] = { [...list of initializers...] }; The second const is unnecessary, as arrays cannot be modified anyway, and if the elements are const, the whole thing is const automatically (e.g. it is placed in .rodata). I have verified this does not change the binary output of a full kernel build (except for build timestamps embedded in the object files). Reviewed by: yongari, marius MFC after: 1 week

Convert the if_vr(4) driver model to the interrupt filter model and use

2012-05-12T14:37:25Z

a taskqueue. This gives a 16% performance improvement under high load on slow systems, especially when vr shares an interrupt with another device, which is common with the Alix x86 boards. Contrary to the other devices, I left the interrupt processing for loop in because there was no significant difference in performance and this should avoid enqueuing more taskqueues unnecessarily. We also decided to move the vr_start_locked() call inside the for loop because we found out that it helps performance since TCP ACKs now have a chance to go out quicker. Reviewed by: yongari (older version, same idea) Discussed with: yongari, jhb

Announce flow control capability to PHY drivers and enable flow

2011-11-28T19:03:59Z

control for all vr(4) controllers that support it. It's known that old vr(4) controllers(Rhine II) does not support TX pause but Rhine III supports both TX and RX pause. Make TX pause really work on Rhine III by letting controller know available RX buffers. While here, adjust XON/XOFF parameters to get better performance with flow control.

Reuse flag variable to represent driver internal states rather than

2011-11-28T18:32:35Z

using member variables in softc. While I'm here change media after setting IFF_DRV_RUNNING. This will remove unnecessary link state handling in vr_tick() if controller established a link immediately.