You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
378 lines
9.2 KiB
378 lines
9.2 KiB
#!/bin/sh
|
|
#
|
|
# iscsi_offload
|
|
#
|
|
# Configure iSCSI offload engines for use with open-iscsi
|
|
# Usage:
|
|
# iscsi_offload [-d | -f | -i <ipaddr> | -t ] <nic>
|
|
#
|
|
# Copyright (c) 2011 Hannes Reinecke, SUSE Labs
|
|
# This script is licensed under the GPL.
|
|
#
|
|
# The script creates an open-iscsi interface definition
|
|
# in the style <nic>-<module>, where <nic> matches the
|
|
# network interface passed on the commandline.
|
|
# If '-t' (test mode) is passed as an option, the script
|
|
# will not create nor modify any setting but just print
|
|
# the currently active ones.
|
|
#
|
|
# Currently the script works with Broadcom (bnx2i) and
|
|
# Chelsio T3 (cxgbi) iSCSI offload engines.
|
|
# Should work with Chelsio T4, but has not been tested.
|
|
# ServerEngines (be2iscsi) and QLogic (qla4xxx) can only
|
|
# be configured via BIOS, open-iscsi support is still in
|
|
# development.
|
|
#
|
|
|
|
#
|
|
# Return codes:
|
|
# 0: Success
|
|
# 1: Invalid command line parameter
|
|
# 2: iSCSI offloading not supported
|
|
# 3: Error during module loading
|
|
# 4: Cannot configure interface via iscsiadm, use BIOS setup
|
|
# 5: internal error running iscsiadm
|
|
#
|
|
# Output:
|
|
# <mac> [none|dhcp|ip <ipaddr>|ibft]
|
|
# where
|
|
# <mac>: MAC Address of the iSCSI offload engine
|
|
# none: No IP configuration set for the iSCSI offload engine
|
|
# dhcp: iSCSI offload engine configured for DHCP
|
|
# ip: iSCSI offload engine configured with static IP address <ipaddr>
|
|
# ibft: iSCSI offload engine configured from iBFT values
|
|
#
|
|
|
|
#
|
|
# Figure out the MAC address of the iSCSI offload engine
|
|
# corresponding to a NIC from a given PCI device.
|
|
# bnx2 is using one PCI device per port for both network and iSCSI offloading
|
|
# cxgb3 is using one PCI device for everything.
|
|
#
|
|
iscsi_macaddress_from_pcidevice()
|
|
{
|
|
local path=$1
|
|
local if=$2
|
|
local h
|
|
local host
|
|
|
|
for h in $path/host* ; do
|
|
if [ -d "$h" ] ; then
|
|
host=${h##*/}
|
|
read netdev < /sys/class/iscsi_host/$host/netdev
|
|
if [ "$netdev" = "$IFNAME" ] ; then
|
|
read mac < /sys/class/iscsi_host/$host/hwaddress
|
|
if [ "$mac" != "00:00:00:00:00:00" ] ; then
|
|
echo "$mac"
|
|
fi
|
|
break;
|
|
fi
|
|
fi
|
|
done
|
|
}
|
|
|
|
#
|
|
# Figure out the MAC address of the iSCSI offload engine
|
|
# corresponding to a NIC from a given PCI function.
|
|
# It is assumed that the MAC address of the iSCSI offload
|
|
# engine is equal of the MAC address of the NIC plus one.
|
|
# Suitable for be2iscsi and qla4xxx
|
|
#
|
|
iscsi_macaddress_from_pcifn()
|
|
{
|
|
local path=$1
|
|
local if=$2
|
|
local h
|
|
local host
|
|
local ifmac
|
|
|
|
ifmac=$(ip addr show dev $if | sed -n 's/ *link\/ether \(.*\) brd.*/\1/p')
|
|
m5=$(( 0x${ifmac##*:} ))
|
|
m5=$(( $m5 + 1 ))
|
|
ifmac=$(printf "%s:%02x" ${ifmac%:*} $m5)
|
|
for host in /sys/class/iscsi_host/host* ; do
|
|
if [ -L "$host" ] ; then
|
|
read mac < $host/hwaddress
|
|
if [ "$mac" = "$ifmac" ] ; then
|
|
echo "$mac"
|
|
break;
|
|
fi
|
|
fi
|
|
done
|
|
}
|
|
|
|
update_iface_setting() {
|
|
local iface="$1"
|
|
local name="$2"
|
|
local value="$3"
|
|
|
|
iface_value=$(iscsiadm -m iface -I $iface | sed -n "s/$name = \(.*\)/\1/p")
|
|
if [ "$iface_value" = "<empty>" ] ; then
|
|
iface_value=
|
|
fi
|
|
if [ "$iface_value" != "$value" ] ; then
|
|
if ! iscsiadm -m iface -I $iface -o update -n "$name" -v "$value" ; then
|
|
return 1
|
|
fi
|
|
fi
|
|
return 0
|
|
}
|
|
|
|
while getopts di:t options ; do
|
|
case $options in
|
|
d ) mode=dhcp;;
|
|
i ) mode=static
|
|
optaddr=$OPTARG
|
|
;;
|
|
f ) mode=firmware;;
|
|
t ) dry_run=1;;
|
|
?) printf "Usage: %s [-d|-t|-i ipaddr|-f] ifname\n" $0
|
|
exit 1;;
|
|
esac
|
|
done
|
|
shift $(($OPTIND - 1))
|
|
|
|
IFNAME=$1
|
|
ibft_mode="none"
|
|
|
|
if [ -z "$IFNAME" ] ; then
|
|
echo "No interface specified"
|
|
exit 1
|
|
fi
|
|
|
|
if [ "$dry_run" ] ; then
|
|
if [ "$mode" = "dhcp" ] ; then
|
|
echo "'-t' specified, ignoring '-d'"
|
|
mode=
|
|
elif [ "$mode" = "static" ] ; then
|
|
echo "'-t' specified, ignoring '-s'"
|
|
mode=
|
|
fi
|
|
fi
|
|
|
|
if [ ! -L /sys/class/net/$IFNAME ] ; then
|
|
echo "Interface $IFNAME not found"
|
|
exit 1
|
|
fi
|
|
|
|
if [ "$optaddr" ] && ! ip route get $optaddr ; then
|
|
echo "Invalid IP address $optaddr"
|
|
exit 1
|
|
fi
|
|
if [ "$dry_run" ] ; then
|
|
mode=
|
|
fi
|
|
|
|
|
|
ifpath=$(cd -P /sys/class/net/$IFNAME; echo $PWD)
|
|
pcipath=$(cd -P $ifpath/device; echo $PWD)
|
|
|
|
if [ -d $pcipath ] ; then
|
|
drvlink=$(readlink $pcipath/driver)
|
|
driver=${drvlink##*/}
|
|
fi
|
|
|
|
if [ -z "$driver" ] ; then
|
|
echo "No driver found for interface $IFNAME"
|
|
exit 1
|
|
fi
|
|
|
|
case "$driver" in
|
|
bnx2*)
|
|
mod=bnx2i
|
|
;;
|
|
cxgb*)
|
|
mod=cxgb3i
|
|
;;
|
|
be2*)
|
|
mod=be2iscsi
|
|
;;
|
|
qla*)
|
|
mod=qla4xxx
|
|
;;
|
|
esac
|
|
|
|
if [ -z "$mod" ] ; then
|
|
echo "iSCSI offloading not supported on interface $IFNAME"
|
|
exit 2
|
|
fi
|
|
|
|
# Check if the required modules are already loaded
|
|
loaded=$(sed -n "/^$mod/p" /proc/modules)
|
|
if [ -z "$loaded" ] ; then
|
|
modprobe $mod
|
|
fi
|
|
|
|
loaded=$(sed -n "/^$mod/p" /proc/modules)
|
|
if [ -z "$loaded" ] ; then
|
|
echo "Loading of $mod.ko failed, please check dmesg"
|
|
exit 3
|
|
fi
|
|
|
|
# Get the correct MAC address for the various devices
|
|
if [ "$mod" = "bnx2i" ] ; then
|
|
mac=$(iscsi_macaddress_from_pcidevice $pcipath $IFNAME)
|
|
elif [ "$mod" = "cxgb3i" ] ; then
|
|
mac=$(iscsi_macaddress_from_pcidevice $pcipath $IFNAME)
|
|
elif [ "$mod" = "be2iscsi" ] ; then
|
|
mac=$(iscsi_macaddress_from_pcifn $pcipath $IFNAME)
|
|
elif [ "$mod" = "qla4xxx" ] ; then
|
|
mac=$(iscsi_macaddress_from_pcifn $pcipath $IFNAME)
|
|
fi
|
|
|
|
if [ -z "$mac" ] ; then
|
|
echo "iSCSI offloading not supported on interface $IFNAME"
|
|
exit 2
|
|
fi
|
|
|
|
gen_iface="$mod.$mac"
|
|
ioe_iface="${IFNAME}-${mod}"
|
|
|
|
# Get existing settings
|
|
if iscsiadm -m iface -I $ioe_iface > /dev/null 2>&1 ; then
|
|
ioe_mac=$(iscsiadm -m iface -I $ioe_iface 2> /dev/null| sed -n "s/iface\.hwaddress = \(.*\)/\1/p")
|
|
ioe_mod=$(iscsiadm -m iface -I $ioe_iface 2> /dev/null| sed -n "s/iface\.transport_name = \(.*\)/\1/p")
|
|
ipaddr=$(iscsiadm -m iface -I $ioe_iface 2> /dev/null| sed -n "s/iface\.ipaddress = \(.*\)/\1/p")
|
|
if [ "$ipaddr" == "<empty>" ] ; then
|
|
ipaddr=
|
|
fi
|
|
elif [ "$mod" = "be2iscsi" ] ; then
|
|
ioe_mac=$mac
|
|
ioe_mod=$mod
|
|
else
|
|
# Create new interface
|
|
iscsiadm -m iface -I $ioe_iface --op=new 2> /dev/null
|
|
ioe_mac=
|
|
ioe_mod=
|
|
ipaddr=
|
|
fi
|
|
|
|
if [ -z "$dry_run" ] ; then
|
|
if [ "$ioe_mac" != "$mac" ] ; then
|
|
if [ -n "$ioe_mac" ] ; then
|
|
echo "Warning: Updating MAC address on iface $ioe_iface"
|
|
fi
|
|
update_iface_setting $ioe_iface iface.hwaddress "$mac"
|
|
fi
|
|
|
|
if [ "$ioe_mod" != "$mod" ] ; then
|
|
if [ -n "$ioe_mod" ] ; then
|
|
echo "Warning: Update transport on iface $ioe_iface"
|
|
fi
|
|
update_iface_setting $ioe_iface iface.transport_name "$mod"
|
|
fi
|
|
elif [ -z "$ipaddr" ] ; then
|
|
ipaddr=$(iscsiadm -m iface -I $gen_iface 2> /dev/null| sed -n "s/iface\.ipaddress = \(.*\)/\1/p")
|
|
if [ "$ipaddr" = "<empty>" ] ; then
|
|
ipaddr=
|
|
fi
|
|
elif [ "$ioe_mod" != "$mod" ] ; then
|
|
echo "Warning: Transport mismatch on iface $ioe_iface: $ioe_mod should be $mod"
|
|
fi
|
|
|
|
# Check iBFT setting
|
|
for d in /sys/firmware/* ; do
|
|
[ -d $d ] || continue
|
|
[ -d $d/ethernet0 ] || continue
|
|
iboot_dir=$d
|
|
done
|
|
if [ -n "$iboot_dir" ] && [ -d "$iboot_dir" ] ; then
|
|
for if in ${iboot_dir}/ethernet* ; do
|
|
read ibft_mac < $if/mac
|
|
[ "$ibft_mac" = "$mac" ] || continue
|
|
ibft_origin=0
|
|
[ -f ${if}/origin ] && read ibft_origin < $if/origin
|
|
if [ "$ibft_origin" -eq 1 ] ; then
|
|
ibft_mode="static"
|
|
elif [ "$ibft_origin" -eq 3 ] ; then
|
|
ibft_mode="dhcp"
|
|
fi
|
|
[ -f $if/dhcp ] && read ibft_dhcp < $if/dhcp
|
|
if [ -n "$ibft_dhcp" -a "$ibft_mode" != "dhcp" ] ; then
|
|
ibft_mode=dhcp
|
|
fi
|
|
if [ "$ibft_mode" = "dhcp" ] ; then
|
|
ibft_ipaddr="0.0.0.0"
|
|
ibft_gateway=
|
|
ibft_mask=
|
|
break
|
|
fi
|
|
[ -f $if/ip-addr ] && read ibft_ipaddr < $if/ip-addr
|
|
[ -f $if/gateway ] && read ibft_gateway < $if/gateway
|
|
[ -f $if/subnet-mask ] && read ibft_mask < $if/subnet-mask
|
|
break
|
|
done
|
|
fi
|
|
|
|
if [ -z "$optaddr" ] && [ "$ibft_ipaddr" ] ; then
|
|
optaddr=$ibft_ipaddr
|
|
fi
|
|
|
|
# Check if the interface needs to be configured
|
|
if [ -z "$mode" ] ; then
|
|
if [ "$ibft_mode" != "none" ] ; then
|
|
echo "$mac ibft"
|
|
mode="ibft"
|
|
elif [ -z "$ipaddr" ] ; then
|
|
echo "$mac none"
|
|
mode="none"
|
|
elif [ "$ipaddr" = "0.0.0.0" ] ; then
|
|
echo "$mac dhcp"
|
|
ipaddr=
|
|
mode="dhcp"
|
|
else
|
|
echo "$mac ip $ipaddr"
|
|
mode="static"
|
|
fi
|
|
[ "$dry_run" ] && exit 0
|
|
elif [ "$mode" = "dhcp" ] ; then
|
|
if [ "$ipaddr" = "0.0.0.0" ] ; then
|
|
echo "$mac dhcp"
|
|
exit 0
|
|
fi
|
|
optaddr="0.0.0.0"
|
|
elif [ "$mode" = "static" ] && [ "$ipaddr" = "$optaddr" ] ; then
|
|
echo "$mac ip $ipaddr"
|
|
exit 0
|
|
fi
|
|
|
|
if [ "$mod" = "be2iscsi" ] ; then
|
|
exit 4
|
|
fi
|
|
|
|
if ! update_iface_setting $ioe_iface iface.ipaddress "$optaddr" ; then
|
|
echo "Failed to set IP address: $?"
|
|
exit 1
|
|
fi
|
|
if ! update_iface_setting $gen_iface iface.ipaddress "$optaddr" ; then
|
|
echo "Failed to set IP address for generic interface: $?"
|
|
exit 1
|
|
fi
|
|
|
|
if ! update_iface_setting $ioe_iface iface.gateway "$ibft_gateway" ; then
|
|
echo "Failed to set gateway address: $?"
|
|
exit 1
|
|
fi
|
|
|
|
if ! update_iface_setting $gen_iface iface.gateway "$ibft_gateway" ; then
|
|
echo "Failed to set gateway address for generic interface: $?"
|
|
exit 1
|
|
fi
|
|
|
|
if ! update_iface_setting $ioe_iface iface.subnet_mask "$ibft_mask" ; then
|
|
echo "Failed to set subnet mask: $?"
|
|
exit 1
|
|
fi
|
|
|
|
if ! update_iface_setting $gen_iface iface.subnet_mask "$ibft_mask" ; then
|
|
echo "Failed to set subnet mask for generic interface: $?"
|
|
exit 1
|
|
fi
|
|
|
|
if [ "$mod" = "qla4xxx" ] ; then
|
|
iscsiadm -m iface -H $mac -o applyall
|
|
fi
|
|
ip link set dev $IFNAME up
|
|
|
|
exit 0
|
|
|