forked from Imagelibrary/rtems
a3d0b8a79a
From: Eric Norum <eric@skatter.usask.ca> Date: Sat, 5 Dec 98 13:20:51 -0600 What do you think of this patch? It implements your `tap' suggestion in a way that adds support for all ethernet devices with no driver modifications. I also added a return value from the tap function. If the return value is zero, the packet will be passed up the chain as usual. If the return value is non-zero the mbuf holding the packet will be freed and the packet will be dropped. If you like it, please submit it to Joel. I guess there needs to be an addition to the network documentation describing the additional ioctl's -- and a big warning that the tap function is called from a context that holds the network semaphore. Here is Eric's patch. I've tested it a bit, and made a couple of trivial changes. This is certainly better than mine: it should work for all Ethernet drivers. ================================================== The only concern I have about this patch is that the tap function may want to fiddle with the mbuf, calling functions like m_pullup and the like. If those force the networking code to rearrange the mbuf structure, then the caller's call to m_freem may crash. I don't know if this is a realistic concern--I don't know enough about the mbuf layer.
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# $Id$
#
This is the top level of the RTEMS directory structure. The following
is a description of the files and directories in this directory:
Makefile.in
The top-level Make command file used to build the C implementation
of RTEMS. [RTEMS assumes the use of GNU make.]
README
This file.
REQUIRES
A list of the other tools which are assumed to be installed
before RTEMS is built.
SUPPORT
Information on third-party support for RTEMS.
build-tools
This directory contains the source for various utilities
needed to build RTEMS.
make
Make command files "included" from those in the source distribution.
[RTEMS assumes the use of GNU make.]
patches
This directory contains patches for this release of RTEMS.
src
This directory contains the source code for the C
implementation of RTEMS as well as the test suites, sample
applications, Board Support Packages, Device Drivers, and
support libraries.