#!/bin/sh # SPDX-License-Identifier: GPL-2.0-or-later # Copyright (c) 2006 International Business Machines Corp. # Copyright (c) 2020 Joerg Vehlow # Author: Mitsuru Chinen # # Verify that the kernel is not crashed when joining multiple multicast # groups on separate sockets, then receiving a large number of UDP # packets at each socket TST_NEEDS_ROOT=1 TST_NEEDS_TMPDIR=1 TST_SETUP="mcast_setup_normal_udp" TST_CLEANUP="mcast_cleanup" TST_TESTFUNC="do_test" . mcast-lib.sh do_test() { 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" local addr port local n=0 while [ $n -lt $MCASTNUM_NORMAL ]; do # Define the multicast address if [ "$TST_IPV6" ]; then local n_hex=$(printf "%x" $n) addr=${MCAST_IPV6_ADDR_PREFIX}:${n_hex} else local x=$((n / 254)) local y=$((n % 254 + 1)) addr=${MCAST_IPV4_ADDR_PREFIX}.${x}.${y} fi port=$(tst_get_unused_port ipv${TST_IPVER} dgram) [ $? -ne 0 ] && tst_brk TBROK "no free udp port available" # Run a receiver ROD $MCAST_LCMD -f $TST_IPVER -I $(tst_iface lhost) -m $addr -p $port -b # Run a sender tst_rhost_run -s -c "$MCAST_RCMD -D $addr -f $TST_IPVER -p $port -m -I $(tst_iface rhost) -b -t $NS_DURATION" n=$((n+1)) done sleep $NS_DURATION tst_res TPASS "test finished successfully" } tst_run