OSCL-LXR linux-6.0.1/​tools/​testing/​selftests/​net/​fib_nexthop_multiprefix.sh	Source navigation Diff markup Identifier search General search
	Version: linux-6.0.1 spark-3.0.0 hadoop-3.2.0-src hadoop-3.3.0-src spark-2.4.7 linux-4.15.13 hadoop-2.7.4-src Revert   Change

 #!/bin/bash
 # SPDX-License-Identifier: GPL-2.0
 #
 # Validate cached routes in fib{6}_nh that is used by multiple prefixes.
 # Validate a different # exception is generated in h0 for each remote host.
 #
 #               h1
 #            /
 #    h0 - r1 -  h2
 #            \
 #               h3
 #
 # routing in h0 to hN is done with nexthop objects.
 
 PAUSE_ON_FAIL=no
 VERBOSE=0
 
 which ping6 > /dev/null 2>&1 && ping6=$(which ping6) || ping6=$(which ping)
 
 ################################################################################
 # helpers
 
 log_test()
 {
         local rc=$1
         local expected=$2
         local msg="$3"
 
         if [ ${rc} -eq ${expected} ]; then
                 printf "TEST: %-60s  [ OK ]\n" "${msg}"
                 nsuccess=$((nsuccess+1))
         else
                 ret=1
                 nfail=$((nfail+1))
                 printf "TEST: %-60s  [FAIL]\n" "${msg}"
                 if [ "${PAUSE_ON_FAIL}" = "yes" ]; then
                         echo
                         echo "hit enter to continue, 'q' to quit"
                         read a
                         [ "$a" = "q" ] && exit 1
                 fi
         fi
 
         [ "$VERBOSE" = "1" ] && echo
 }
 
 run_cmd()
 {
         local cmd="$*"
         local out
         local rc
 
         if [ "$VERBOSE" = "1" ]; then
                 echo "COMMAND: $cmd"
         fi
 
         out=$(eval $cmd 2>&1)
         rc=$?
         if [ "$VERBOSE" = "1" -a -n "$out" ]; then
                 echo "$out"
         fi
 
         [ "$VERBOSE" = "1" ] && echo
 
         return $rc
 }
 
 ################################################################################
 # config
 
 create_ns()
 {
         local ns=${1}
 
         ip netns del ${ns} 2>/dev/null
 
         ip netns add ${ns}
         ip -netns ${ns} addr add 127.0.0.1/8 dev lo
         ip -netns ${ns} link set lo up
 
         ip netns exec ${ns} sysctl -q -w net.ipv6.conf.all.keep_addr_on_down=1
         case ${ns} in
         h*)
                 ip netns exec $ns sysctl -q -w net.ipv6.conf.all.forwarding=0
                 ;;
         r*)
                 ip netns exec $ns sysctl -q -w net.ipv4.ip_forward=1
                 ip netns exec $ns sysctl -q -w net.ipv6.conf.all.forwarding=1
                 ;;
         esac
 }
 
 setup()
 {
         local ns
         local i
 
         #set -e
 
         for ns in h0 r1 h1 h2 h3
         do
                 create_ns ${ns}
         done
 
         #
         # create interconnects
         #
 
         for i in 0 1 2 3
         do
                 ip -netns h${i} li add eth0 type veth peer name r1h${i}
                 ip -netns h${i} li set eth0 up
                 ip -netns h${i} li set r1h${i} netns r1 name eth${i} up
 
                 ip -netns h${i}    addr add dev eth0 172.16.10${i}.1/24
                 ip -netns h${i} -6 addr add dev eth0 2001:db8:10${i}::1/64
                 ip -netns r1    addr add dev eth${i} 172.16.10${i}.254/24
                 ip -netns r1 -6 addr add dev eth${i} 2001:db8:10${i}::64/64
         done
 
         ip -netns h0 nexthop add id 4 via 172.16.100.254 dev eth0
         ip -netns h0 nexthop add id 6 via 2001:db8:100::64 dev eth0
 
         # routing from h0 to h1-h3 and back
         for i in 1 2 3
         do
                 ip -netns h0    ro add 172.16.10${i}.0/24 nhid 4
                 ip -netns h${i} ro add 172.16.100.0/24 via 172.16.10${i}.254
 
                 ip -netns h0    -6 ro add 2001:db8:10${i}::/64 nhid 6
                 ip -netns h${i} -6 ro add 2001:db8:100::/64 via 2001:db8:10${i}::64
         done
 
         if [ "$VERBOSE" = "1" ]; then
                 echo
                 echo "host 1 config"
                 ip -netns h0 li sh
                 ip -netns h0 ro sh
                 ip -netns h0 -6 ro sh
         fi
 
         #set +e
 }
 
 cleanup()
 {
         for n in h0 r1 h1 h2 h3
         do
                 ip netns del ${n} 2>/dev/null
         done
 }
 
 change_mtu()
 {
         local hostid=$1
         local mtu=$2
 
         run_cmd ip -netns h${hostid} li set eth0 mtu ${mtu}
         run_cmd ip -netns r1 li set eth${hostid} mtu ${mtu}
 }
 
 ################################################################################
 # validate exceptions
 
 validate_v4_exception()
 {
         local i=$1
         local mtu=$2
         local ping_sz=$3
         local dst="172.16.10${i}.1"
         local h0=172.16.100.1
         local r1=172.16.100.254
         local rc
 
         if [ ${ping_sz} != "0" ]; then
                 run_cmd ip netns exec h0 ping -s ${ping_sz} -c5 -w5 ${dst}
         fi
 
         if [ "$VERBOSE" = "1" ]; then
                 echo "Route get"
                 ip -netns h0 ro get ${dst}
                 echo "Searching for:"
                 echo "    cache .* mtu ${mtu}"
                 echo
         fi
 
         ip -netns h0 ro get ${dst} | \
         grep -q "cache .* mtu ${mtu}"
         rc=$?
 
         log_test $rc 0 "IPv4: host 0 to host ${i}, mtu ${mtu}"
 }
 
 validate_v6_exception()
 {
         local i=$1
         local mtu=$2
         local ping_sz=$3
         local dst="2001:db8:10${i}::1"
         local h0=2001:db8:100::1
         local r1=2001:db8:100::64
         local rc
 
         if [ ${ping_sz} != "0" ]; then
                 run_cmd ip netns exec h0 ${ping6} -s ${ping_sz} -c5 -w5 ${dst}
         fi
 
         if [ "$VERBOSE" = "1" ]; then
                 echo "Route get"
                 ip -netns h0 -6 ro get ${dst}
                 echo "Searching for:"
                 echo "    ${dst} from :: via ${r1} dev eth0 src ${h0} .* mtu ${mtu}"
                 echo
         fi
 
         ip -netns h0 -6 ro get ${dst} | \
         grep -q "${dst} from :: via ${r1} dev eth0 src ${h0} .* mtu ${mtu}"
         rc=$?
 
         log_test $rc 0 "IPv6: host 0 to host ${i}, mtu ${mtu}"
 }
 
 ################################################################################
 # main
 
 while getopts :pv o
 do
         case $o in
                 p) PAUSE_ON_FAIL=yes;;
                 v) VERBOSE=1;;
         esac
 done
 
 cleanup
 setup
 sleep 2
 
 cpus=$(cat  /sys/devices/system/cpu/online)
 cpus="$(seq ${cpus/-/ })"
 ret=0
 for i in 1 2 3
 do
         # generate a cached route per-cpu
         for c in ${cpus}; do
                 run_cmd taskset -c ${c} ip netns exec h0 ping -c1 -w1 172.16.10${i}.1
                 [ $? -ne 0 ] && printf "\nERROR: ping to h${i} failed\n" && ret=1
 
                 run_cmd taskset -c ${c} ip netns exec h0 ${ping6} -c1 -w1 2001:db8:10${i}::1
                 [ $? -ne 0 ] && printf "\nERROR: ping6 to h${i} failed\n" && ret=1
 
                 [ $ret -ne 0 ] && break
         done
         [ $ret -ne 0 ] && break
 done
 
 if [ $ret -eq 0 ]; then
         # generate different exceptions in h0 for h1, h2 and h3
         change_mtu 1 1300
         validate_v4_exception 1 1300 1350
         validate_v6_exception 1 1300 1350
         echo
 
         change_mtu 2 1350
         validate_v4_exception 2 1350 1400
         validate_v6_exception 2 1350 1400
         echo
 
         change_mtu 3 1400
         validate_v4_exception 3 1400 1450
         validate_v6_exception 3 1400 1450
         echo
 
         validate_v4_exception 1 1300 0
         validate_v6_exception 1 1300 0
         echo
 
         validate_v4_exception 2 1350 0
         validate_v6_exception 2 1350 0
         echo
 
         validate_v4_exception 3 1400 0
         validate_v6_exception 3 1400 0
 
         # targeted deletes to trigger cleanup paths in kernel
         ip -netns h0 ro del 172.16.102.0/24 nhid 4
         ip -netns h0 -6 ro del 2001:db8:102::/64 nhid 6
 
         ip -netns h0 nexthop del id 4
         ip -netns h0 nexthop del id 6
 fi
 
 cleanup

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