me="${0##*/}"
-# convert number of mask bits to x.x.x.x mask format
+# convert number of mask bits to x.x.x.x or x:x:x:x:x:x:x:x mask format
cidr2mask() {
local i mask=""
local full_octets=$(($1/8))
fi
test $i -lt 3 && mask+=.
done
+ echo $mask
+}
+
+cidr2maskipv6() {
+ local mask=""
+ local num_bits=$1
+
+ if [ $num_bits -le 128 ]; then
+ local full_blocks=$((num_bits / 16))
+ local remaining_bits=$((16 - (num_bits % 16)))
+ for ((i = 0; i < 8; i++)); do
+ if [ $i -lt $full_blocks ]; then
+ mask+="ffff"
+ elif [ $i -eq $full_blocks ]; then
+ mask+="$(printf "%x" $((0xFFFF >> $remaining_bits)))"
+ else
+ mask+="0"
+ fi
+ [ $i -lt 7 ] && mask+=":"
+ done
+ else
+ echo "Invalid prefix length for IPv6"
+ return 1
+ fi
echo $mask
}
echo "$nta.$ntb.$ntc.$ntd"
}
+# expand IPv6 address to full length
+expand_ipv6() {
+ local ip=$1
+ local expanded_ip=""
+
+ # Split the IP address into segments
+ IFS=':' read -r -a segments <<< "$ip"
+
+ # Count the number of segments
+ local num_segments=${#segments[@]}
+
+ # Check if "::" is present in the IP address
+ local double_colon_index=$(echo "$ip" | grep -o "::" | wc -l)
+ local double_colon_present=false
+
+ # If "::" is present, count the number of segments before and after it
+ if [[ "$double_colon_index" -gt 0 ]]; then
+ double_colon_present=true
+ local before_double_colon=${segments[0]}
+ local after_double_colon=${segments[-1]}
+
+ # Count the number of segments before "::"
+ local num_before_double_colon=$(echo "$before_double_colon" | grep -o ":" | wc -l)
+ [[ -z "$before_double_colon" ]] && num_before_double_colon=0
+
+ # Count the number of segments after "::"
+ local num_after_double_colon=$(echo "$after_double_colon" | grep -o ":" | wc -l)
+ [[ -z "$after_double_colon" ]] && num_after_double_colon=0
+ fi
+
+ # Iterate over each segment
+ for segment in "${segments[@]}"; do
+ # If "::" is present, handle segments before and after it
+ if [[ "$double_colon_present" = true ]]; then
+ if [[ "$segment" = "" ]]; then
+ # Fill in the missing segments with "0000"
+ local missing_segments=$((8 - num_segments + 1))
+ for ((i=1; i<=$missing_segments; i++)); do
+ expanded_ip+="0000:"
+ done
+ else
+ # Expand the segment to 4 characters and append it to the expanded IP
+ expanded_ip+=$(printf "%04s" "$segment" | tr ' ' '0')
+ expanded_ip+=":"
+ fi
+ else
+ # Expand the segment to 4 characters and append it to the expanded IP
+ expanded_ip+=$(printf "%04s" "$segment" | tr ' ' '0')
+ expanded_ip+=":"
+ fi
+ done
+
+ # Remove the trailing colon
+ expanded_ip="${expanded_ip%:}"
+
+ echo "$expanded_ip"
+}
+
+netcalcipv6() {
+ local ip=$1
+ local mask=$2
+
+ # Expand IP address and subnet mask to full length
+ ip=$(expand_ipv6 $ip)
+
+ local ip_blocks=(${ip//:/ })
+ local mask_blocks=(${mask//:/ })
+ local result=""
+
+ for ((i = 0; i < 8; i++)); do
+ local dec_ip_block=$((16#${ip_blocks[i]}))
+ local dec_mask_block=$((16#${mask_blocks[i]}))
+ local network_block=$((dec_ip_block & dec_mask_block))
+ result+=$(printf "%04x" $network_block)
+ [ $i -lt 7 ] && result+=":"
+ done
+ echo $result
+}
+
# Check if the user wants to skip setting the routes
checkskipcmd=$(cat /sys/module/ksocklnd/parameters/skip_mr_route_setup 2>&-)
if [ "$checkskipcmd" == "1" ]; then
for i in $(echo $1 | sed "s/,/ /g")
do
# verify that the interface exists
- #echo "$i"
- addr=$(/sbin/ip -o -4 addr list $i 2>&- | awk '{print $4}' | cut -d/ -f1)
- linelen=$(echo -n $addr | wc -m)
- if [[ $linelen -eq 0 ]]; then
- # there's a problem with this interface, skip it
- #echo 'bad!'
- continue
- fi
- # check if route is already set up for this interface
- intfroute=$(/sbin/ip route show table $i 2>&-)
- if [[ ! -z $intfroute ]]; then
- # route exists so skip this interface
- logcmd=(logger "${me}: skip setting up route for ${i}: don\'t overwrite existing route")
+ ipv4_addr=$(/sbin/ip -o -4 addr list $i 2>&- | awk '{print $4}' | cut -d/ -f1)
+ ipv6_addr=$(/sbin/ip -o -6 addr list $i 2>&- | awk '{print $4}' | cut -d/ -f1)
+
+ if [ -z "$ipv4_addr" ] && [ -z "$ipv6_addr" ]; then
+ # No IPv4 or IPv6 address configured on this interface, skip it
+ logcmd=(logger "${me}: skip setting up route for ${i}: IP address not found")
eval "${logcmd[@]}"
continue
fi
+
+ # Check if route is already set up for this interface (IPv4 or IPv6)
+ if [ ! -z "$ipv4_addr" ]; then
+ intfroute_ipv4=$(/sbin/ip -o -4 route show table $i 2>&-)
+ if [ ! -z "$intfroute_ipv4" ]; then
+ echo $intfroute_ipv4
+ # IPv4 route exists, skip this interface
+ logcmd=(logger "${me}: skip setting up route for ${i}: IPv4 route exists")
+ eval "${logcmd[@]}"
+ continue
+ fi
+ fi
+
+ if [ ! -z "$ipv6_addr" ]; then
+ intfroute_ipv6=$(/sbin/ip -o -6 route show table $i 2>&-)
+ if [ ! -z "$intfroute_ipv6" ]; then
+ # IPv6 route exists, skip this interface
+ logcmd=(logger "${me}: skip setting up route for ${i}: IPv6 route exists")
+ eval "${logcmd[@]}"
+ continue
+ fi
+ fi
+
interfaces[$j]=$i
j=$((j+1))
done
continue
fi
# split using space as separator
- splitline=( $line )
+ splitline=( $line )
# check the table number and update the max
if [ $max_table_num -lt ${splitline[0]} ]; then
max_table_num=${splitline[0]}
fi
fi
done
- #echo "Line No. $n : $line: $max_table_num"
n=$((n+1))
done < $filename
gwsline=$(/sbin/ip route | awk '/default/ { print $3 }')
gateways=($gwsline)
-# select a gateway on the same subnet
+gwsline_ipv6=$(/sbin/ip -6 route | awk '/default/ { print $3 }')
+gateways_ipv6=($gwsline_ipv6)
+
+# Select a gateway on the same subnet for both IPv4 and IPv6
selectgw() {
- for gw in "${gateways[@]}"; do
- if [[ "$(netcalc "${1}" "${2}")" == "$(netcalc "${gw}" "${2}")" ]]; then
- echo $gw
- return
- fi
- done
+ local ip=$1
+ local mask=$2
+
+ # Check if the IP address is IPv4 or IPv6
+ if [[ $ip =~ .*:.* ]]; then
+ # IPv6
+ ip=$(expand_ipv6 $ip)
+ mask=$(expand_ipv6 $mask)
+ local ip_blocks=(${ip//:/ })
+ local mask_blocks=(${mask//:/ })
+ local result=""
+
+ for ((i = 0; i < 8; i++)); do
+ local dec_ip_block=$((16#${ip_blocks[i]}))
+ local dec_mask_block=$((16#${mask_blocks[i]}))
+ local network_block=$((dec_ip_block & dec_mask_block))
+ result+=$(printf "%04x" $network_block)
+ [ $i -lt 7 ] && result+=":"
+ done
+
+ local network_ipv6=$result
+ for gw in "${gateways_ipv6[@]}"; do
+ gw_network=$(netcalcipv6 "$gw" "$mask")
+ if [[ "$network_ipv6" == "$gw_network" ]]; then
+ echo $gw
+ return
+ fi
+ done
+ else
+ # IPv4
+ local ip_parts=(${ip//./ })
+ local mask_parts=(${mask//./ })
+ local network_ipv4=""
+
+ for ((i = 0; i < 4; i++)); do
+ local network_part=$((ip_parts[i] & mask_parts[i]))
+ network_ipv4+="$network_part"
+ [ $i -lt 3 ] && network_ipv4+="."
+ done
+
+ for gw in "${gateways[@]}"; do
+ gw_network=$(netcalc "$gw" "$mask")
+ if [[ "$network_ipv4" == "$gw_network" ]]; then
+ echo $gw
+ return
+ fi
+ done
+ fi
echo "0.0.0.0"
}
-# add the routing entries and rules
+# Add the routing entries and rules for IPv4 and/or IPv6
for i in "${interfaces[@]}"
do
- # extract ipv4 address and netmask in cidr format
- addr=($(/sbin/ip -o -4 addr list $i 2>&- | awk '{print $4}' | cut -d/ -f1))
- cidrmask=($(/sbin/ip -o -4 addr list $i 2>&- | awk '{print $4}' | cut -d/ -f2))
- # convert cidr mask to mask in dot format
- dotmask=$(cidr2mask ${cidrmask[0]})
- # find a gateway on the same subnet
- gw=$(selectgw ${addr[0]} $dotmask)
- # build and execute route commands
- if [[ $gw == "0.0.0.0" ]]; then
- # gateway not found, assume local destinations
- net=$(netcalc ${addr[0]} $dotmask)
- routecmd=(/sbin/ip route add ${net}/${cidrmask[0]} dev ${i} proto kernel scope link src ${addr[0]} table ${i})
- else
- routecmd=(/sbin/ip route add default via ${gw} dev ${i} table ${i})
+ # Extract IPv4 and IPv6 addresses and netmasks in CIDR format
+ addr_ipv4=($(/sbin/ip -o -4 addr list $i 2>&- | awk '{print $4}' | cut -d/ -f1))
+ cidrmask_ipv4=($(/sbin/ip -o -4 addr list $i 2>&- | awk '{print $4}' | cut -d/ -f2))
+ addr_ipv6=($(/sbin/ip -o -6 addr list $i 2>&- | awk '{print $4}' | cut -d/ -f1))
+ cidrmask_ipv6=($(/sbin/ip -o -6 addr list $i 2>&- | awk '{print $4}' | cut -d/ -f2))
+ # Configure routing and rules for IPv4 (if IPv4 address is configured)
+ if [ ! -z "${addr_ipv4}" ]; then
+ # Convert CIDR mask to mask in dot format for IPv4
+ dotmask_ipv4=$(cidr2mask ${cidrmask_ipv4[0]})
+ # Find a gateway on the same subnet for IPv4
+ gw_ipv4=$(selectgw "${addr_ipv4[0]}" "$dotmask_ipv4")
+ # Build and execute route commands for IPv4
+ if [[ $gw_ipv4 == "0.0.0.0" ]]; then
+ # Gateway not found, assume local destinations for IPv4
+ net_ipv4=$(netcalc "${addr_ipv4[0]}" "$dotmask_ipv4")
+ routecmd_ipv4=(/sbin/ip route add ${net_ipv4}/${cidrmask_ipv4[0]} dev ${i} proto kernel scope link src ${addr_ipv4[0]} table ${i})
+ else
+ routecmd_ipv4=(/sbin/ip route add default via ${gw_ipv4} dev ${i} table ${i})
+ fi
+ ruledelcmd_ipv4=(/sbin/ip rule del from ${addr_ipv4[0]} table ${i} '&>/dev/null')
+ ruleaddcmd_ipv4=(/sbin/ip rule add from ${addr_ipv4[0]} table ${i})
+
+ routeerr_ipv4=$(eval "${routecmd_ipv4[@]}" 2>&1 >/dev/null)
+ ruledelerr_ipv4=$(eval "${ruledelcmd_ipv4[@]}" 2>&1 >/dev/null)
+ ruleadderr_ipv4=$(eval "${ruleaddcmd_ipv4[@]}" 2>&1 >/dev/null)
+
+ logcmd1_ipv4=(logger "${me}: ${routecmd_ipv4[@]} ${routeerr_ipv4}")
+ logcmd2_ipv4=(logger "${me}: ${ruledelcmd_ipv4[@]} ${ruledelerr_ipv4}")
+ logcmd3_ipv4=(logger "${me}: ${ruleaddcmd_ipv4[@]} ${ruleadderr_ipv4}")
+
+ eval "${logcmd1_ipv4[@]}"
+ eval "${logcmd2_ipv4[@]}"
+ eval "${logcmd3_ipv4[@]}"
+ fi
+
+ # Configure routing and rules for IPv6 (if IPv6 address is configured)
+ if [ ! -z "${addr_ipv6}" ]; then
+ # Convert CIDR mask to mask in dot format for IPv6
+ dotmask_ipv6=$(cidr2maskipv6 ${cidrmask_ipv6[0]})
+ # Find a gateway on the same subnet for IPv6
+ gw_ipv6=$(selectgw "${addr_ipv6[0]}" "$dotmask_ipv6")
+ # Build and execute route commands for IPv6
+ if [[ $gw_ipv6 == "0.0.0.0" ]]; then
+ # Gateway not found, assume local destinations for IPv6
+ net_ipv6=$(netcalcipv6 "${addr_ipv6[0]}" "$dotmask_ipv6")
+ routecmd_ipv6=(/sbin/ip -6 route add ${addr_ipv6[0]}/${cidrmask_ipv6[0]} dev ${i} proto kernel scope link src ${addr_ipv6[0]} table ${i})
+ else
+ routecmd_ipv6=(/sbin/ip -6 route add default via ${gw_ipv6} dev ${i} table ${i})
+ fi
+ ruledelcmd_ipv6=(/sbin/ip -6 rule del from ${addr_ipv6[0]} table ${i} '&>/dev/null')
+ ruleaddcmd_ipv6=(/sbin/ip -6 rule add from ${addr_ipv6[0]} table ${i})
+
+ routeerr_ipv6=$(eval "${routecmd_ipv6[@]}" 2>&1 >/dev/null)
+ ruledelerr_ipv6=$(eval "${ruledelcmd_ipv6[@]}" 2>&1 >/dev/null)
+ ruleadderr_ipv6=$(eval "${ruleaddcmd_ipv6[@]}" 2>&1 >/dev/null)
+
+ logcmd1_ipv6=(logger -- "${me}: ${routecmd_ipv6[@]} ${routeerr_ipv6}")
+ logcmd2_ipv6=(logger -- "${me}: ${ruledelcmd_ipv6[@]} ${ruledelerr_ipv6}")
+ logcmd3_ipv6=(logger -- "${me}: ${ruleaddcmd_ipv6[@]} ${ruleadderr_ipv6}")
+
+ eval "${logcmd1_ipv6[@]}"
+ eval "${logcmd2_ipv6[@]}"
+ eval "${logcmd3_ipv6[@]}"
fi
- ruledelcmd=(/sbin/ip rule del from ${addr[0]} table ${i} '&>/dev/null')
- ruleaddcmd=(/sbin/ip rule add from ${addr[0]} table ${i})
- routeerr=$(eval ${routecmd[@]} 2>&1 >/dev/null)
- ruledelerr=$(eval ${ruledelcmd[@]} 2>&1 >/dev/null)
- ruleaddcmd=$(eval ${ruleaddcmd[@]} 2>&1 >/dev/null)
- logcmd1=(logger "${me}: ${routecmd[@]} ${routeerr}")
- logcmd2=(logger "${me}: ${ruledelcmd[@]} ${ruledelerr}")
- logcmd3=(logger "${me}: ${ruleaddcmd[@]} ${ruleaddcmd}")
- eval "${logcmd1[@]}"
- eval "${logcmd2[@]}"
- eval "${logcmd3[@]}"
done
# flush arp tables
git://git.whamcloud.com / fs / lustre-release.git / commitdiff