genode/repos/os/run/internet_checksum.run
Christian Helmuth b6aa021d76 internet_checksum.run: restrict tshark protocols
Restrict checksum checking in output.pcap to ip,tcp,udp,icmp.

Issue #4636
2024-05-29 09:18:49 +02:00

93 lines
3.2 KiB
Plaintext

assert_spec linux
set tshark [installed_command tshark]
set trafgen [installed_command trafgen]
set lx_fs_root "internet_checksum_dir"
set lx_fs_dir "bin/$lx_fs_root"
set input_file_name "input.pcap"
set input_file "bin/$input_file_name"
rename exit run_tool_exit
proc exit {{code 0}} {
global lx_fs_dir
global input_file
if {[get_cmd_switch --autopilot]} { exec rm -rf $input_file $lx_fs_dir }
run_tool_exit $code
}
build { core init lib/ld lib/vfs test/internet_checksum server/lx_fs }
create_boot_directory
set seed ""
if {[info exists ::env(SEED)]} {
set seed $::env(SEED)
} else {
set min_seed 0
set max_seed [expr 2**32]
set seed [expr int($min_seed + floor(rand() * $max_seed))]
}
puts "\nUse script with SEED=$seed in order to get reproducible results\n"
install_config {
<config verbose="yes">
<parent-provides>
<service name="ROM"/>
<service name="LOG"/>
<service name="CPU"/>
<service name="PD"/>
</parent-provides>
<start name="lx_fs" ld="no" caps="100">
<resource name="RAM" quantum="4M"/>
<provides> <service name="File_system"/> </provides>
<config> <policy label="test-internet_checksum -> " root="/} $lx_fs_root {" writeable="yes"/> </config>
<route> <any-service> <parent/> </any-service> </route>
</start>
<start name="test-internet_checksum" caps="100">
<resource name="RAM" quantum="1M"/>
<config seed="} $seed {"> <vfs> <fs/> </vfs> </config>
<route>
<service name="File_system"> <child name="lx_fs"/> </service>
<any-service> <parent/> </any-service>
</route>
</start>
</config> }
exec rm -rf $lx_fs_dir
exec mkdir -p $lx_fs_dir
exec $trafgen --rand --seed $seed --in [genode_dir]/repos/os/src/test/internet_checksum/trafgen.cfg --num 10000 --out $input_file
proc assert_no_bad_checksums_in {pcap_file} {
global tshark
set view_filter "ip.checksum_bad.expert || tcp.checksum_bad.expert || udp.checksum.bad || icmp.checksum_bad"
set out "<invalid>"
set out [exec $tshark -o ip.check_checksum:TRUE -o tcp.check_checksum:TRUE -o udp.check_checksum:TRUE -Y "$view_filter" -r $pcap_file]
if {$out != ""} {
puts "\nError: bad checksums found in $pcap_file\n"
exit -1
}
}
assert_no_bad_checksums_in $input_file
build_boot_image [list {*}[build_artifacts] $lx_fs_root $input_file_name]
append qemu_args " -nographic "
run_genode_until {\[init\] child "test-internet_checksum" exited.*?\n} 30
set output_file "$lx_fs_dir/output.pcap"
assert_no_bad_checksums_in $output_file
set num_checked_checksums ""
set string_buf ""
regexp {checked [0-9]+ checksums} $output string_buf
regexp {[0-9]+} $string_buf num_checked_checksums
set tmp_file "$lx_fs_dir/tmp"
exec $tshark -o ip.check_checksum:TRUE -o tcp.check_checksum:TRUE -o udp.check_checksum:TRUE -O ip,tcp,udp,icmp -r $output_file | grep -e "Checksum Status:" -e "Header checksum status:" > $tmp_file
set num_output_checksums [exec wc -l < $tmp_file]
if {$num_checked_checksums != $num_output_checksums} {
puts "\nError: number of checksums in $output_file ($num_output_checksums) differs from number of checked checksums ($num_checked_checksums)\n"
exit -1
}
grep_output {\[init\] child "test-internet_checksum" exited}
compare_output_to {[init] child "test-internet_checksum" exited with exit value 0}