#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
+#shellcheck disable=SC2034 # SC doesn't see our uses of global variables
##############################################################################
# Topology description. p1 looped back to p2, p3 to p4 and so on.
##############################################################################
# Command line options handling
-count=0
+check_env() {
+ if [[ ! (( -n "$LOCAL_V4" && -n "$REMOTE_V4") ||
+ ( -n "$LOCAL_V6" && -n "$REMOTE_V6" )) ]]; then
+ echo "SKIP: Invalid environment, missing or inconsistent LOCAL_V4/REMOTE_V4/LOCAL_V6/REMOTE_V6"
+ echo "Please see tools/testing/selftests/drivers/net/README.rst"
+ exit "$ksft_skip"
+ fi
-while [[ $# -gt 0 ]]; do
- if [[ "$count" -eq "0" ]]; then
- unset NETIFS
- declare -A NETIFS
+ if [[ -z "$REMOTE_TYPE" ]]; then
+ echo "SKIP: Invalid environment, missing REMOTE_TYPE"
+ exit "$ksft_skip"
fi
- count=$((count + 1))
- NETIFS[p$count]="$1"
- shift
-done
+
+ if [[ -z "$REMOTE_ARGS" ]]; then
+ echo "SKIP: Invalid environment, missing REMOTE_ARGS"
+ exit "$ksft_skip"
+ fi
+}
+
+__run_on()
+{
+ local target=$1; shift
+ local type args
+
+ IFS=':' read -r type args <<< "$target"
+
+ case "$type" in
+ netns)
+ # Execute command in network namespace
+ # args contains the namespace name
+ ip netns exec "$args" "$@"
+ ;;
+ ssh)
+ # Execute command via SSH args contains user@host
+ ssh -n "$args" "$@"
+ ;;
+ local|*)
+ # Execute command locally. This is also the fallback
+ # case for when the interface's target is not found in
+ # the TARGETS array.
+ "$@"
+ ;;
+ esac
+}
+
+run_on()
+{
+ local iface=$1; shift
+ local target="local:"
+
+ if [ "${DRIVER_TEST_CONFORMANT}" = "yes" ]; then
+ target="${TARGETS[$iface]}"
+ fi
+
+ __run_on "$target" "$@"
+}
+
+get_ifname_by_ip()
+{
+ local target=$1; shift
+ local ip_addr=$1; shift
+
+ __run_on "$target" ip -j addr show to "$ip_addr" | jq -r '.[].ifname'
+}
+
+# Whether the test is conforming to the requirements and usage described in
+# drivers/net/README.rst.
+: "${DRIVER_TEST_CONFORMANT:=no}"
+
+declare -A TARGETS
+
+# Based on DRIVER_TEST_CONFORMANT, decide if to source drivers/net/net.config
+# or not. In the "yes" case, the test expects to pass the arguments through the
+# variables specified in drivers/net/README.rst file. If not, fallback on
+# parsing the script arguments for interface names.
+if [ "${DRIVER_TEST_CONFORMANT}" = "yes" ]; then
+ if [[ -f $net_forwarding_dir/../../drivers/net/net.config ]]; then
+ source "$net_forwarding_dir/../../drivers/net/net.config"
+ fi
+
+ if (( NUM_NETIFS > 2)); then
+ echo "SKIP: DRIVER_TEST_CONFORMANT=yes and NUM_NETIFS is bigger than 2"
+ exit "$ksft_skip"
+ fi
+
+ check_env
+
+ # Populate the NETIFS and TARGETS arrays automatically based on the
+ # environment variables. The TARGETS array is indexed by the network
+ # interface name keeping track of the target on which the interface
+ # resides. Values will be strings of the following format -
+ # <type>:<args>.
+ #
+ # TARGETS[eth0]="local:" - meaning that the eth0 interface is
+ # accessible locally
+ # TARGETS[eth1]="netns:foo" - eth1 is in the foo netns
+ # TARGETS[eth2]="ssh:root@10.0.0.2" - eth2 is accessible through
+ # running the 'ssh root@10.0.0.2' command.
+
+ unset NETIFS
+ declare -A NETIFS
+
+ NETIFS[p1]="$NETIF"
+ TARGETS[$NETIF]="local:"
+
+ # Locate the name of the remote interface
+ remote_target="$REMOTE_TYPE:$REMOTE_ARGS"
+ if [[ -v REMOTE_V4 ]]; then
+ remote_netif=$(get_ifname_by_ip "$remote_target" "$REMOTE_V4")
+ else
+ remote_netif=$(get_ifname_by_ip "$remote_target" "$REMOTE_V6")
+ fi
+ if [[ ! -n "$remote_netif" ]]; then
+ echo "SKIP: cannot find remote interface"
+ exit "$ksft_skip"
+ fi
+
+ if [[ "$NETIF" == "$remote_netif" ]]; then
+ echo "SKIP: local and remote interfaces cannot have the same name"
+ exit "$ksft_skip"
+ fi
+
+ NETIFS[p2]="$remote_netif"
+ TARGETS[$remote_netif]="$REMOTE_TYPE:$REMOTE_ARGS"
+else
+ count=0
+
+ while [[ $# -gt 0 ]]; do
+ if [[ "$count" -eq "0" ]]; then
+ unset NETIFS
+ declare -A NETIFS
+ fi
+ count=$((count + 1))
+ NETIFS[p$count]="$1"
+ TARGETS[$1]="local:"
+ shift
+ done
+fi
##############################################################################
# Network interfaces configuration
projects / thirdparty / linux.git / commitdiff
