Adding VIOC device driver, support files: Documenation, makefiles etc. Signed-off-by: Misha Tomushev <[EMAIL PROTECTED]>
diff -uprN linux-2.6.17/Documentation/networking/vioc.txt linux-2.6.17.vioc/Documentation/networking/vioc.txt --- linux-2.6.17/Documentation/networking/vioc.txt 1969-12-31 16:00:00.000000000 -0800 +++ linux-2.6.17.vioc/Documentation/networking/vioc.txt 2006-09-01 10:09:49.000000000 -0700 @@ -0,0 +1,98 @@ + VIOC Driver Release Notes (07/12/06) + ==================================== + [EMAIL PROTECTED] + + +Overview +======== + +A Virtual Input-Output Controller (VIOC) is a PCI device that provides +10Gbps of I/O bandwidth that can be shared by up to 16 virtual network +interfaces (VNICs). VIOC hardware supports several features such as +large frames, checksum offload, gathered send, MSI/MSI-X, bandwidth +control, interrupt mitigation, etc. + +VNICs are provisioned to a host partition via an out-of-band interface +from the System Controller -- typically before the partition boots, +although they can be dynamically added or removed from a running +partition as well. + +Each provisioned VNIC appears as an Ethernet netdevice to the host OS, +and maintains its own transmit ring in DMA memory. VNICs are +configured to share up to 4 of total 16 receive rings and 1 of total +16 receive-completion rings in DMA memory. VIOC hardware classifies +packets into receive rings based on size, allowing more efficient use +of DMA buffer memory. The default, and recommended, configuration +uses groups of 'receive sets' (rxsets), each with 3 receive rings, a +receive completion ring, and a VIOC Rx interrupt. The driver gives +each rxset a NAPI poll handler associated with a phantom (invisible) +netdevice, for concurrency. VNICs are assigned to rxsets using a +simple modulus. + +VIOC provides 4 interrupts in INTx mode: 2 for Rx, 1 for Tx, and 1 for +out-of-band messages from the System Controller and errors. VIOC also +provides 19 MSI-X interrupts: 16 for Rx, 1 for Tx, 1 for out-of-band +messages from the System Controller, and 1 for error signalling from +the hardware. The VIOC driver makes a determination whether MSI-X +functionality is supported and initializes interrupts accordingly. +[Note: The Linux kernel disables MSI-X for VIOCs on modules with AMD +8131, even if the device is on the HT link.] + + +Module loadable parameters +========================== + +- poll_weight (default 8) - the number of received packets will be + processed during one call into the NAPI poll handler. + +- rx_intr_timeout (default 1) - hardware rx interrupt mitigation + timer, in units of 5us. + +- rx_intr_pkt_cnt (default 64) - hardware rx interrupt mitigation + counter, in units of packets. + +- tx_pkts_per_irq (default 64) - hardware tx interrupt mitigation + counter, in units of packets. + +- tx_pkts_per_bell (default 1) - the number of packets to enqueue on a + transmit ring before issuing a doorbell to hardware. + +Performance Tuning +================== + +You may want to use the following sysctl settings to improve +performance. [NOTE: To be re-checked] + +# set in /etc/sysctl.conf + +net.ipv4.tcp_timestamps = 0 +net.ipv4.tcp_sack = 0 +net.ipv4.tcp_rmem = 10000000 10000000 10000000 +net.ipv4.tcp_wmem = 10000000 10000000 10000000 +net.ipv4.tcp_mem = 10000000 10000000 10000000 + +net.core.rmem_max = 5242879 +net.core.wmem_max = 5242879 +net.core.rmem_default = 5242879 +net.core.wmem_default = 5242879 +net.core.optmem_max = 5242879 +net.core.netdev_max_backlog = 100000 + +Out-of-band Communications with System Controller +================================================= + +System operators can use the out-of-band facility to allow for remote +shutdown or reboot of the host partition. Upon receiving such a +command, the VIOC driver executes "/sbin/reboot" or "/sbin/shutdown" +via the usermodehelper() call. + +This same communications facility is used for dynamic VNIC +provisioning (plug in and out). + +The VIOC driver also registers a callback with +register_reboot_notifier(). When the callback is executed, the driver +records the shutdown event and reason in a VIOC register to notify the +System Controller. + + + diff -uprN linux-2.6.17/MAINTAINERS linux-2.6.17.vioc/MAINTAINERS --- linux-2.6.17/MAINTAINERS 2006-06-17 18:49:35.000000000 -0700 +++ linux-2.6.17.vioc/MAINTAINERS 2006-09-01 10:09:49.000000000 -0700 @@ -3106,6 +3106,11 @@ L: [EMAIL PROTECTED] W: http://rio500.sourceforge.net S: Maintained +VIOC NETWORK DRIVER +P: [EMAIL PROTECTED] +L: netdev@vger.kernel.org +S: Maintained + VIDEO FOR LINUX P: Mauro Carvalho Chehab M: [EMAIL PROTECTED] diff -uprN linux-2.6.17/drivers/net/Kconfig linux-2.6.17.vioc/drivers/net/Kconfig --- linux-2.6.17/drivers/net/Kconfig 2006-06-17 18:49:35.000000000 -0700 +++ linux-2.6.17.vioc/drivers/net/Kconfig 2006-09-01 10:19:35.000000000 -0700 @@ -1818,9 +1818,6 @@ config NE_H8300 Say Y here if you want to use the NE2000 compatible controller on the Renesas H8/300 processor. -source "drivers/net/fec_8xx/Kconfig" -source "drivers/net/fs_enet/Kconfig" - endmenu # @@ -2228,6 +2225,15 @@ endmenu menu "Ethernet (10000 Mbit)" depends on !UML +config VIOC + tristate "Fabric7 VIOC support" + depends on PCI + help + This driver supports the Virtual Input-Output Controller (VIOC) a + single PCI device that provides 10Gbps of I/O bandwidth that can be + shared by up to 16 virtual network interfaces (VNICs). + See <file:Documentation/networking/vioc.txt> for more information + config CHELSIO_T1 tristate "Chelsio 10Gb Ethernet support" depends on PCI @@ -2311,6 +2317,9 @@ config S2IO_NAPI If in doubt, say N. +source "drivers/net/fec_8xx/Kconfig" +source "drivers/net/fs_enet/Kconfig" + endmenu source "drivers/net/tokenring/Kconfig" diff -uprN linux-2.6.17/drivers/net/Makefile linux-2.6.17.vioc/drivers/net/Makefile --- linux-2.6.17/drivers/net/Makefile 2006-06-17 18:49:35.000000000 -0700 +++ linux-2.6.17.vioc/drivers/net/Makefile 2006-09-01 10:09:49.000000000 -0700 @@ -10,6 +10,7 @@ obj-$(CONFIG_E1000) += e1000/ obj-$(CONFIG_IBM_EMAC) += ibm_emac/ obj-$(CONFIG_IXGB) += ixgb/ obj-$(CONFIG_CHELSIO_T1) += chelsio/ +obj-$(CONFIG_VIOC) += vioc/ obj-$(CONFIG_BONDING) += bonding/ obj-$(CONFIG_GIANFAR) += gianfar_driver.o diff -uprN linux-2.6.17/drivers/net/vioc/Makefile linux-2.6.17.vioc/drivers/net/vioc/Makefile --- linux-2.6.17/drivers/net/vioc/Makefile 1969-12-31 16:00:00.000000000 -0800 +++ linux-2.6.17.vioc/drivers/net/vioc/Makefile 2006-10-04 13:32:21.000000000 -0700 @@ -0,0 +1,34 @@ +############################################################################ #### +# +# +# Copyright(c) 2003-2006 Fabric7 Systems. All rights reserved. +# +# This program is free software; you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by the Free +# Software Foundation; either version 2 of the License, or (at your option) +# any later version. +# +# This program is distributed in the hope that it will be useful, but WITHOUT +# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or +# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for +# more details. +# +# You should have received a copy of the GNU General Public License along with +# this program; if not, write to the Free Software Foundation, Inc., 59 +# Temple Place - Suite 330, Boston, MA 02111-1307, USA. +# +# The full GNU General Public License is included in this distribution in the +# file called LICENSE. +# +# Contact Information: +# <[EMAIL PROTECTED]> +# Fabric7 Systems, 1300 Crittenden Lane Suite 302 Mountain View, CA 94043 +# +############################################################################ #### + +obj-$(CONFIG_VIOC) += vioc.o + +vioc-objs := vioc_driver.o vioc_transmit.o vioc_receive.o vioc_api.o \ + vioc_spp.o vioc_irq.o spp.o spp_vnic.o vioc_provision.o \ + vioc_ethtool.o + -- Misha Tomushev [EMAIL PROTECTED] - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
