1#!/bin/sh 2# SPDX-License-Identifier: GPL-2.0-or-later 3# Copyright (c) 2006 International Business Machines Corp. 4# Copyright (c) 2020 Joerg Vehlow <joerg.vehlow@aox-tech.de> 5# Author: Mitsuru Chinen <mitch@jp.ibm.com> 6# 7# Verify that the kernel is not crashed when joining multiple multicast 8# groups on separate sockets, then receiving a large number of UDP 9# packets at each socket 10 11TST_NEEDS_ROOT=1 12TST_NEEDS_TMPDIR=1 13TST_SETUP="mcast_setup_normal_udp" 14TST_CLEANUP="mcast_cleanup" 15TST_TESTFUNC="do_test" 16. mcast-lib.sh 17 18do_test() 19{ 20 tst_res TINFO "joining $MCASTNUM_NORMAL IPv${TST_IPVER} multicast groups on separate sockets, then receiving a large number of UDP packets at each socket in $NS_DURATION seconds" 21 22 local addr port 23 local n=0 24 25 while [ $n -lt $MCASTNUM_NORMAL ]; do 26 # Define the multicast address 27 if [ "$TST_IPV6" ]; then 28 local n_hex=$(printf "%x" $n) 29 addr=${MCAST_IPV6_ADDR_PREFIX}:${n_hex} 30 else 31 local x=$((n / 254)) 32 local y=$((n % 254 + 1)) 33 addr=${MCAST_IPV4_ADDR_PREFIX}.${x}.${y} 34 fi 35 36 port=$(tst_get_unused_port ipv${TST_IPVER} dgram) 37 [ $? -ne 0 ] && tst_brk TBROK "no free udp port available" 38 39 # Run a receiver 40 ROD $MCAST_LCMD -f $TST_IPVER -I $(tst_iface lhost) -m $addr -p $port -b 41 42 # Run a sender 43 tst_rhost_run -s -c "$MCAST_RCMD -D $addr -f $TST_IPVER -p $port -m -I $(tst_iface rhost) -b -t $NS_DURATION" 44 45 n=$((n+1)) 46 done 47 48 sleep $NS_DURATION 49 50 tst_res TPASS "test finished successfully" 51} 52 53tst_run 54