FreeBSD src
cdc2a5ec78
controller. AX88772B data sheet does not show detailed information about checksum offloading related things. It seems the controller has lots of options to support checksum offloading but I failed to understand why this feature requires so much complex controller configuration and status bits. One of major difference between AX88772B and its predecessor is AX88772B uses a new RX header format when RX checksum offloading is enabled. It also requires the received length of a frame should be multiple of 4. Controller will pad necessary bytes to make the length of received frame to be multiple of 4. It is driver's responsibility to offset this pad bytes. Note, AX88772B could be configured to get partial checksum value in in RX header. This mode uses different RX header format and currently we don't use that fature. This change makes axe(4) use driver specific MII attach handler to override uether(9)'s default MII attach and announce flow-control capability for AX88178/AX88772A/AX88772B to PHY drivers. It seems original AX88772 also supports flow-control but I didn't enable it due to lack of test/access to the controller. The flow-control threshold parameter is loaded from EEPROM and there is no way to override this value without reprogramming EEPROM. For AX88772B, TX/RX IP/TCP/UDP checksum offloading is announced to network stack. IPv6 and PPPoE checksum offloading is also supported by controller but we have no way to take advantage of these features. Driver already knows PHY address so make PHY driver know that information and remove unnecessary PHY address check used in miibus_readreg/miibus_writereg callbacks. Also announce AX88178, AX88772A and AX88772B support VLAN over-sized frame. While I'm here clean up headers and remove axe_start() in axe_init() because the link wouldn't be available right after media change. |
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| cddl | ||
| contrib | ||
| crypto | ||
| etc | ||
| games | ||
| gnu | ||
| include | ||
| kerberos5 | ||
| lib | ||
| libexec | ||
| release | ||
| rescue | ||
| sbin | ||
| secure | ||
| share | ||
| sys | ||
| tools | ||
| usr.bin | ||
| usr.sbin | ||
| COPYRIGHT | ||
| LOCKS | ||
| MAINTAINERS | ||
| Makefile | ||
| Makefile.inc1 | ||
| Makefile.mips | ||
| 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