From: David L Stevens <david.stevens@oracle.com>
To: David Miller <davem@davemloft.net>
Cc: netdev@vger.kernel.org,
Sowmini Varadhan <sowmini.varadhan@oracle.com>,
Raghuram Kothahota <raghuram.kothakota@oracle.com>
Subject: [PATCHv9 net-next 0/4] sunvnet: add jumbo frames support
Date: Mon, 29 Sep 2014 19:47:47 -0400 [thread overview]
Message-ID: <5429EFA3.9050304@oracle.com> (raw)
This patch set updates the sunvnet driver to version 1.6 of the VIO protocol
to support per-port exchange of MTU information and allow non-standard MTU
sizes, including jumbo frames.
Using large MTUs shows a nearly 5X throughput improvement Linux-Solaris
and > 10X throughput improvement Linux-Linux.
Changes from v8:
-add a short timeout to free pending skbs if a new transmit doesn't
do it first per Dave Miller <davem@davemloft.net>
Changes from v7:
-handle skb allocation failures in vnet_skb_shape()
per Dave Miller <davem@davemloft.net>
Changes from v6:
-made kernel transmit path zero-copy to remove memory n^2 scaling issue
raised by Raghuram Kothakota <Raghuram.Kothakota@oracle.com>
Changes from v5:
- fixed comment per Sowmini Varadhan <sowmini.varadhan@oracle.com>
Changes from v4:
- changed VNET_MAXPACKET per David Laight <David.Laight@ACULAB.COM>
- added cookies to support non-contiguous buffers of max size
Changes from v3:
- added version functions per Dave Miller <davem@davemloft.net>
- moved rmtu to vnet_port per Dave Miller <davem@davemloft.net>
- explicitly set options bits and capability flags to 0 per
Raghuram Kothakota <Raghuram.Kothakota@oracle.com>
Changes from v2:
- make checkpatch clean
Changes from v1:
- fix brace formatting per Dave Miller <davem@davemloft.net>
David L Stevens (4):
sunvnet: upgrade to VIO protocol version 1.6
sunvnet: make transmit path zero-copy in the kernel
sunvnet: allow admin to set sunvnet MTU
sunvnet: generate ICMP PTMUD messages for smaller port MTUs
arch/sparc/include/asm/vio.h | 44 +++++-
arch/sparc/kernel/ldc.c | 2 +-
arch/sparc/kernel/viohs.c | 14 ++-
drivers/net/ethernet/sun/sunvnet.c | 358 ++++++++++++++++++++++++++++++------
drivers/net/ethernet/sun/sunvnet.h | 16 ++-
5 files changed, 366 insertions(+), 68 deletions(-)
next reply other threads:[~2014-09-29 23:47 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-29 23:47 David L Stevens [this message]
2014-09-30 21:11 ` [PATCHv9 net-next 0/4] sunvnet: add jumbo frames support David Miller
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