Changes in v2 include:
- Updated to Roland's tree as of 7/24/2011
- Moved the crc32 algorithm into a patch (slice-by-8-for_crc32.c.diff)
that goes into the mainline kernel. It has been submitted upstream
but is also included in here since it is required to build the driver.
- renamed rxe_sb8.c rxe_icrc.c since that is all it now does.
- Cleaned up warnings from checkpatch, C=2 and __CHECK_ENDIAN__.
- moved small .h files into rxe_loc.h
- rewrote the Kconfig text to be a little friendlier
- Changed the patch names to make them easier to handle.
- the quilt patch series is online at:
http://support.systemfabricworks.com/downloads/rxe/patches-v2.tgz
- librxe is online at:
http://support.systemfabricworks.com/downloads/rxe/librxe-1.0.0.tar.gz
Thanks to Roland Dreier, Bart van Assche and David Dillow for helpful
suggestions.
Introduction:
This patch set implements a software emulation of RoCE or InfiniBand transport.
It consists of two kernel modules. The first, ib_rxe, implements the RDMA
transport and registers with the RDMA core as a kernel verbs provider. The
second, ib_rxe_net or ib_sample, implement the packet IO layer. ib_rxe_net
attaches to the Linux netdev stack as a network protocol and can send and
receive packets over any Ethernet device. It uses the RoCE protocol to handle
RDMA transport. ib_sample is a pure loopback device that uses the InfiniBand
transport i.e. it includes the LRH header while RoCE only includes the GRH
header.
The modules are configured by entries in /sys. There is a configuration script
(rxe_cfg) that simplifies the use of this interface. Rxe_cfg is part of the
rxe user space code, librxe.
The use of rxe verbs in user space requires the inclusion of librxe as a device
specific plug-in to libibverbs. Librxe is packaged separately.
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