1 files changed, 137 insertions, 0 deletions
diff --git a/src/bpfswitch/scripts/l2fwd.sh b/src/bpfswitch/scripts/l2fwd.sh
new file mode 100755
index 00000000..173f93c1
--- /dev/null
+++ b/src/bpfswitch/scripts/l2fwd.sh
@@ -0,0 +1,137 @@
+#!/bin/bash
+
+# Copyright David Ashern and Sridhar K. N. Rao
+
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# L2FWD configuration 
+
+
+BPFFS=/sys/fs/bpf
+BPFTOOL=/usr/sbin/bpftool
+
+# MAC ADDRESSES - Ex: Of Traffic-Generator Ports
+TGENEASTMAC=12:41:da:80:1f:71
+TGENWESTMAC=12:30:6d:9f:6f:42
+
+# Interfaces
+EAST=ens0f0
+WEST=ens0f1
+
+# Index of Interfaces
+EASTINDEX=1
+EASTINDEX=2
+
+
+################################################################################
+#
+pr_msg()
+{
+	echo -e "\e[34m$*\e[00m"
+}
+
+run_cmd()
+{
+	local cmd="$*"
+
+	echo
+	echo -e "\e[31m${cmd}\e[00m"
+	sudo $cmd
+}
+
+show_maps()
+{
+	echo
+        echo -e "\e[31m${BPFTOOL} map sh\e[00m"
+	sudo ${BPFTOOL} map sh | \
+	awk 'BEGIN { skip = 0 } {
+		if (skip) {
+			skip--
+		} else if ($2 == "lpm_trie") {
+			skip = 1
+		} else {
+			print
+		}
+	}'
+}
+
+show_progs()
+{
+	echo
+        echo -e "\e[31m${BPFTOOL} prog sh\e[00m"
+	sudo ${BPFTOOL} prog sh | \
+	awk 'BEGIN { skip = 0 } {
+		if (skip) {
+			skip--
+		} else if ($2 == "cgroup_skb") {
+			skip = 2
+		} else {
+			print
+		}
+	}'
+}
+
+show_status()
+{
+	show_maps
+	show_progs
+	run_cmd ${BPFTOOL} net sh
+}
+
+do_reset()
+{
+	sudo rm -rf ${BPFFS}/map
+	sudo rm -rf ${BPFFS}/prog
+	sudo mkdir ${BPFFS}/map
+	sudo mkdir ${BPFFS}/prog
+
+	for d in eth0 eth1
+	do
+		sudo ${BPFTOOL} net detach xdp dev ${d}
+		sudo ethtool -K ${d} hw-tc-offload on
+		sudo ethtool -K ${d} rxvlan off
+	done
+}
+
+################################################################################
+# start
+
+do_reset >/dev/null 2>&1
+
+echo
+pr_msg "Create ports map"
+pr_msg "- global map used for bulking redirected packets"
+
+run_cmd ${BPFTOOL} map create ${BPFFS}/map/xdp_fwd_ports \
+       type devmap_hash key 4 value 8 entries 512 name xdp_fwd_ports
+
+echo
+pr_msg "Add entries to the egress port map for EAST and WEST Interfaces"
+run_cmd ${BPFTOOL} map update pinned ${BPFFS}/map/xdp_fwd_ports \
+	key hex ${EASTINDEX} 0 0 0 value hex ${EASTINDEX} 0 0 0 0 0 0 0
+run_cmd ${BPFTOOL} map update pinned ${BPFFS}/map/xdp_fwd_ports \
+	key hex ${WESTINDEX} 0 0 0 value hex ${WESTINDEX} 0 0 0 0 0 0 0
+
+echo
+pr_msg "load l2fwd program and attach to eth0 and eth1"
+
+run_cmd ${BPFTOOL} prog load ../ksrc/obj/xdp_l2fwd.o ${BPFFS}/prog/xdp_l2fwd \
+    map name xdp_fwd_ports name xdp_fwd_ports
+run_cmd ${BPFTOOL} net attach xdp pinned ${BPFFS}/prog/xdp_l2fwd dev ${EAST}
+run_cmd ${BPFTOOL} net attach xdp pinned ${BPFFS}/prog/xdp_l2fwd dev ${WEST}
+
+echo
+pr_msg "Add FDB and port map entries for this"
+run_cmd ../usrc/bin/xdp_l2fwd -s ${TGENEASTMAC} -m ${TGENWESTMAC} -d eth1
+run_cmd ../usrc/bin/xdp_l2fwd -s ${TGENWESTMAC} -m ${TGENEASTMAC} -d eth1
+run_cmd ../usrc/bin/xdp_l2fwd -P