[NET PATCH 0/9] ZC/L4RO enhancements to alacrityvm::vbus-enet driver

Gregory Haskins
2009-10-14T15:59:33Z

The following series applies to the "linux-next" branch in the
alacrityvm tree:

git://git.kernel.org/pub/scm/linux/kernel/git/ghaskins/alacrityvm/linux-2.6.git

These patches add support for zero-copy, and reassembly-offloading to the
venet driver. This means we can transmit a guest GSO packet directly into
the host hardware, and receive fully reassembled LRO frames without
artificially segmenting them.

Unofficial testing against a ZC/L4RO capable backend show that we are
supporting about 6.6Gb/s in throughput (vs 7.3Gb/s for native) which is
up from the prior result of 5.7Gb/s without affecting our latency numbers.
I will officially re-run my tests and update the graphs asap.

http://developer.novell.com/wiki/index.php/AlacrityVM

Kind Regards,
-Greg

---

Gregory Haskins (9):
venet: add Layer-4 Reassembler Offload (L4RO) support
venet: add a tx-complete event for out-of-order support
venet: use an skblist for outstanding descriptors
venet: add eventq protocol
venet: cache the ringlen values at init
venet: report actual used descriptor size
venet: add pre-mapped tx descriptor feature
venet: fix gso.hdr_len to report correct length
venet: Update maintainer

MAINTAINERS | 7
drivers/net/vbus-enet.c | 770 +++++++++++++++++++++++++++++++++++++++++++----
include/linux/venet.h | 61 +++-
3 files changed, 764 insertions(+), 74 deletions(-)