Commit 3ade6ce1 authored by Vegard Nossum's avatar Vegard Nossum Committed by David S. Miller
Browse files

selftests: rds: add testing infrastructure 



This adds some basic self-testing infrastructure for RDS-TCP.

Signed-off-by: default avatarVegard Nossum <vegard.nossum@oracle.com>
Signed-off-by: default avatarChuck Lever <chuck.lever@oracle.com>
Signed-off-by: default avatarAllison Henderson <allison.henderson@oracle.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent bc75dcc3

Documentation/dev-tools/gcov.rst

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@@ -75,6 +75,17 @@ Only files which are linked to the main kernel image or are compiled as 
kernel modules are supported by this mechanism.





Module specific configs

-----------------------



Gcov kernel configs for specific modules are described below:



CONFIG_GCOV_PROFILE_RDS:

        Enables GCOV profiling on RDS for checking which functions or

        lines are executed. This config is used by the rds selftest to

        generate coverage reports. If left unset the report is omitted.





Files

-----

MAINTAINERS

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@@ -19197,6 +19197,7 @@ S: Supported 
W:	https://oss.oracle.com/projects/rds/

F:	Documentation/networking/rds.rst

F:	net/rds/

F:	tools/testing/selftests/net/rds/









RDT - RESOURCE ALLOCATION









M:	Fenghua Yu <fenghua.yu@intel.com>

























tools/testing/selftests/Makefile



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@@ -68,6 +68,7 @@ TARGETS += net/mptcp







TARGETS += net/openvswitch









TARGETS += net/tcp_ao









TARGETS += net/netfilter









TARGETS += net/rds









TARGETS += nsfs









TARGETS += perf_events









TARGETS += pidfd
































tools/testing/selftests/net/rds/Makefile
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# SPDX-License-Identifier: GPL-2.0



















all:









	@echo mk_build_dir="$(shell pwd)" > include.sh



















TEST_PROGS := run.sh \









	include.sh \









	test.py



















EXTRA_CLEAN := /tmp/rds_logs



















include ../../lib.mk
























tools/testing/selftests/net/rds/README.txt
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RDS self-tests









==============



















These scripts provide a coverage test for RDS-TCP by creating two









network namespaces and running rds packets between them. A loopback









network is provisioned with optional probability of packet loss or









corruption. A workload of 50000 hashes, each 64 characters in size,









are passed over an RDS socket on this test network. A passing test means









the RDS-TCP stack was able to recover properly.  The provided config.sh









can be used to compile the kernel with the necessary gcov options.  The









kernel may optionally be configured to omit the coverage report as well.



















USAGE:









	run.sh [-d logdir] [-l packet_loss] [-c packet_corruption]









	       [-u packet_duplcate]



















OPTIONS:









	-d	Log directory.  Defaults to tools/testing/selftests/net/rds/rds_logs



















	-l	Simulates a percentage of packet loss



















	-c	Simulates a percentage of packet corruption



















	-u	Simulates a percentage of packet duplication.



















EXAMPLE:



















    # Create a suitable gcov enabled .config









    tools/testing/selftests/net/rds/config.sh -g



















    # Alternatly create a gcov disabled .config









    tools/testing/selftests/net/rds/config.sh



















    # build the kernel









    vng --build  --config tools/testing/selftests/net/config



















    # launch the tests in a VM









    vng -v --rwdir ./ --run . --user root --cpus 4 -- \









        "export PYTHONPATH=tools/testing/selftests/net/; tools/testing/selftests/net/rds/run.sh"



















An HTML coverage report will be output in tools/testing/selftests/net/rds/rds_logs/coverage/.