Add a couple of helpers which can be used by tests which need to run a specific bash command on a different target than the local system, be it either another netns or a remote system accessible through ssh.
The run_cmd() function decides where to execute the command passed through $@ based on the env variable TARGET value while run_on() will receive the target through its first argument. Signed-off-by: Ioana Ciornei <[email protected]> --- Changes in v2: - patch is new tools/testing/selftests/net/lib.sh | 37 ++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) diff --git a/tools/testing/selftests/net/lib.sh b/tools/testing/selftests/net/lib.sh index b40694573f4c..51d232552e37 100644 --- a/tools/testing/selftests/net/lib.sh +++ b/tools/testing/selftests/net/lib.sh @@ -28,6 +28,10 @@ EXIT_STATUS=0 # Per-test return value. Clear at the beginning of each test. RET=0 +# If a specific command needs to be executed on another target than local, set +# this appropriately before calling run_cmd +TARGET="local:" + ############################################################################## # Helpers @@ -670,3 +674,36 @@ cmd_jq() # return success only in case of non-empty output [ ! -z "$output" ] } + +run_cmd() +{ + IFS=':' read -r type args <<< "$TARGET" + + case "$type" in + local) + # Execute command locally + "$@" + ;; + netns) + # Execute command in network namespace + # args contains the namespace name + ip netns exec "$args" "$@" + ;; + ssh) + # Execute command via SSH args contains user@host + ssh -n "$args" "$@" + ;; + *) + echo "Error: Unknown type '$type'" >&2 + return 1 + ;; + esac +} + +run_on() +{ + local iface=$1; shift + + TARGET="${TARGETS[$iface]}" + run_cmd $@ +} -- 2.25.1
