FreeBSD src
bc0203e201
in preparation for the 5300 3x3 NIC. During this particular adventure, I did indeed discover that a whole swath of things made little to no sense. Those included, and are fixed here: * A lot of the antenna configuration bits assume the NIC has two receive chains. That's blatantly untrue for NICs that don't. * There was some disconnect between the antenna configuration when forming a PLCP rate DWORD (which includes the transmit antenna configuration), separate to the link quality antenna configuration. So now there's helper functions to return which antenna configurations to use and those are used wherever an antenna config is required. * The 5300 does up to three stream TX/RX (so MCS0->23), however the link quality table has only 16 slots. This means all of the rate entries are .. well, dual-stream rates. If this is the case, the "last MIMO" parameter can't be 16 or it panics the firmware. Set it to 15. * .. and since yes it has 16 slots, it only would try retransmitting from MCS8->MCS23, which can be quite .. terrible. Hard-code the last two retry slots to be the lowest configured rate. * I noticed some transmit configuration command stuff is different based on firmware API version, so I lifted that code from Linux. * Add / augment some more logging to make it easier to capture this stuff. Now, 3x3 is still terrible because the link quality configuration is plainly not good enough. I'll have to think about that. However, the original goal of this - 3x3 operation on the Intel 5300 NIC - actually worked. There are also rate control bugs in the way this driver handles notifying the net80211 rate control code when AMPDU is enabled. It always steps the rate up to the maximum rate possible - and this eventually ends in much sadness. I'll fix that later. As a side note - 2GHz HT40 now works on all the NICs I have tested. As a second side note - this exposed some bad 3x3 behaviour in the ath(4) rate control code where it starts off at a 3-stream rate and doesn't downgrade quickly enough. This makes the initial dhcp exchange take a long time. I'll fix the ath(4) rate code to start at a low fixed 1x1 MCS rate and step up if everything works out. Tested: * Intel 2200 * Intel 2230 * Intel 5300 * Intel 5100 * Intel 6205 * Intel 100 TODO: * Test the other NICs more thoroughly! Thank you to Michael Kosarev <russiane39@gmail.com> for donating the Intel 5300 NIC and pestering me about it since last year to try and make it all work. |
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| bin | ||
| cddl | ||
| contrib | ||
| crypto | ||
| etc | ||
| games | ||
| gnu | ||
| include | ||
| kerberos5 | ||
| lib | ||
| libexec | ||
| release | ||
| rescue | ||
| sbin | ||
| secure | ||
| share | ||
| sys | ||
| tests | ||
| tools | ||
| usr.bin | ||
| usr.sbin | ||
| .arcconfig | ||
| .arclint | ||
| COPYRIGHT | ||
| LOCKS | ||
| MAINTAINERS | ||
| Makefile | ||
| Makefile.inc1 | ||
| ObsoleteFiles.inc | ||
| README | ||
| UPDATING | ||
This is the top level of the FreeBSD source directory. This file was last revised on: $FreeBSD$ For copyright information, please see the file COPYRIGHT in this directory (additional copyright information also exists for some sources in this tree - please see the specific source directories for more information). The Makefile in this directory supports a number of targets for building components (or all) of the FreeBSD source tree, the most commonly used one being ``world'', which rebuilds and installs everything in the FreeBSD system from the source tree except the kernel, the kernel-modules and the contents of /etc. The ``world'' target should only be used in cases where the source tree has not changed from the currently running version. See: http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html for more information, including setting make(1) variables. The ``buildkernel'' and ``installkernel'' targets build and install the kernel and the modules (see below). Please see the top of the Makefile in this directory for more information on the standard build targets and compile-time flags. Building a kernel is a somewhat more involved process, documentation for which can be found at: http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig.html And in the config(8) man page. Note: If you want to build and install the kernel with the ``buildkernel'' and ``installkernel'' targets, you might need to build world before. More information is available in the handbook. The sample kernel configuration files reside in the sys/<arch>/conf sub-directory (assuming that you've installed the kernel sources), the file named GENERIC being the one used to build your initial installation kernel. The file NOTES contains entries and documentation for all possible devices, not just those commonly used. It is the successor of the ancient LINT file, but in contrast to LINT, it is not buildable as a kernel but a pure reference and documentation file. Source Roadmap: --------------- bin System/user commands. cddl Various commands and libraries under the Common Development and Distribution License. contrib Packages contributed by 3rd parties. crypto Cryptography stuff (see crypto/README). etc Template files for /etc. games Amusements. gnu Various commands and libraries under the GNU Public License. Please see gnu/COPYING* for more information. include System include files. kerberos5 Kerberos5 (Heimdal) package. lib System libraries. libexec System daemons. release Release building Makefile & associated tools. rescue Build system for statically linked /rescue utilities. sbin System commands. secure Cryptographic libraries and commands. share Shared resources. sys Kernel sources. tools Utilities for regression testing and miscellaneous tasks. usr.bin User commands. usr.sbin System administration commands. For information on synchronizing your source tree with one or more of the FreeBSD Project's development branches, please see: http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/synching.html