Re: [PATCH net-next] selftests: forwarding: Add suppport to create veth interfaces

On 3/4/18 1:14 AM, Ido Schimmel wrote:

On Fri, Mar 02, 2018 at 08:45:53AM -0800, David Ahern wrote:

quoted

For tests using veth interfaces, the test infrastructure can create
the netdevs if they do not exist. Arguably this is a preferred approach
since the tests require p$N and p$(N+1) to be pairs.

Signed-off-by: David Ahern <redacted>

[...]

quoted

diff --git a/tools/testing/selftests/net/forwarding/lib.sh b/tools/testing/selftests/net/forwarding/lib.sh
index d0af52109360..2ce98c6a8c25 100644
--- a/tools/testing/selftests/net/forwarding/lib.sh
+++ b/tools/testing/selftests/net/forwarding/lib.sh

@@ -76,6 +76,39 @@ done
 ##############################################################################
 # Network interfaces configuration
 
+create_netif_veth()
+{
+	local i
+
+	for i in $(eval echo {1..$NUM_NETIFS}); do
+		j=$((i+1))

local j=$((i+1)) and drop a line.

not sure how it drops a line but added the 'local' for j since it was
missing.

quoted

+		ip link show dev ${NETIFS[p$i]} &> /dev/null
+		if [[ $? -ne 0 ]]; then
+			ip link add ${NETIFS[p$i]} type veth peer name ${NETIFS[p$j]}

Need to break this one. FWIW, I have this in my config:

going for readability over strict line lengths. Wrapped in v2.

$ cat ~/.vim/after/ftplugin/sh.vim
...
highlight OverLength ctermbg=red ctermfg=white
match OverLength /\%81v.\+/

Cool patch! Tested on my machine.

quoted

+			if [[ $? -ne 0 ]]; then
+				echo "Failed to create netif"
+				exit 1
+			fi
+		fi
+		i=$j
+	done
+}
+
+create_netif()
+{
+	case "$NETIF_TYPE" in
+	veth) create_netif_veth
+	      ;;
+	*) echo "Can not create interfaces of type \'$NETIF_TYPE\'"
+	   exit 1
+	   ;;
+	esac
+}
+
+if [[ "$NETIF_CREATE" = "yes" ]]; then
+	create_netif
+fi
+
 for i in $(eval echo {1..$NUM_NETIFS}); do
 	ip link show dev ${NETIFS[p$i]} &> /dev/null
 	if [[ $? -ne 0 ]]; then
-- 
2.11.0