p4lang · jafingerhut · May 20, 2026 · May 20, 2026 · May 20, 2026 · May 20, 2026
diff --git a/backends/graphs/README.md b/backends/graphs/README.md
@@ -1,3 +1,9 @@
+<!--
+SPDX-FileCopyrightText: 2017 Barefoot Networks, Inc.
+
+SPDX-License-Identifier: Apache-2.0
+-->
+
 <!--!
 \page graphs_backend Graphs Backend                                                                  
 -->

diff --git a/backends/graphs/resources/flowlet_switching-bmv2.ingress.png.license b/backends/graphs/resources/flowlet_switching-bmv2.ingress.png.license
@@ -0,0 +1,3 @@
+SPDX-FileCopyrightText: 2017 Barefoot Networks, Inc.
+
+SPDX-License-Identifier: Apache-2.0
diff --git a/testdata/p4_16_errors/issue1803_same_table_name.p4 b/testdata/p4_16_errors/issue1803_same_table_name.p4
@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2019 Barefoot Networks, Inc.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 #include <core.p4>
 #include <v1model.p4>
 

diff --git a/testdata/p4_16_errors_outputs/issue1803_same_table_name.p4-stderr b/testdata/p4_16_errors_outputs/issue1803_same_table_name.p4-stderr
@@ -1,4 +1,4 @@
-issue1803_same_table_name.p4(13): [--Wwarn=unused] warning: 'empty' is unused
+issue1803_same_table_name.p4(19): [--Wwarn=unused] warning: 'empty' is unused
 action empty() { }
        ^^^^^
 [--Werror=duplicate] error: Name 't0' is used for multiple table objects in the P4Info message

diff --git a/testdata/p4_16_samples/action_selector_unused-bmv2.p4 b/testdata/p4_16_samples/action_selector_unused-bmv2.p4
@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2017 Barefoot Networks, Inc.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 #include <core.p4>
 #include <v1model.p4>
 

diff --git a/testdata/p4_16_samples/constant-in-calculation-bmv2.stf b/testdata/p4_16_samples/constant-in-calculation-bmv2.stf
@@ -1,3 +1,7 @@
+# SPDX-FileCopyrightText: 2017 Barefoot Networks, Inc.
+#
+# SPDX-License-Identifier: Apache-2.0
+
 # bit<16> A
 # In the output we need A = 1
 

diff --git a/testdata/p4_16_samples/psa-custom-type-counter-index.p4 b/testdata/p4_16_samples/psa-custom-type-counter-index.p4
@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2020 VMware, Inc.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 #include <core.p4>
 #include <bmv2/psa.p4>
 

diff --git a/testdata/p4_16_samples/same_name_for_table_and_action.p4 b/testdata/p4_16_samples/same_name_for_table_and_action.p4
@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2019 Barefoot Networks, Inc.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 #include <core.p4>
 #include <v1model.p4>
 

diff --git a/testdata/p4_16_samples/stack_complex-bmv2.stf b/testdata/p4_16_samples/stack_complex-bmv2.stf
@@ -1,2 +1,6 @@
+# SPDX-FileCopyrightText: 2017 Barefoot Networks, Inc.
+#
+# SPDX-License-Identifier: Apache-2.0
+
 packet 0 00000001 00000002
 expect 4 00000001 00000002
diff --git a/testdata/p4_16_samples/table-entries-ser-enum-bmv2.stf b/testdata/p4_16_samples/table-entries-ser-enum-bmv2.stf
@@ -1,3 +1,7 @@
+# SPDX-FileCopyrightText: 2019 Barefoot Networks, Inc.
+#
+# SPDX-License-Identifier: Apache-2.0
+
 # enum bit<8> MyEnum1B { MBR1 = 0, MBR2 = 0xff }
 # enum bit<16> MyEnum2B { MBR1 = 10, MBR2 = 0xab00 }
 # header hdr { MyEnum1B f1; MyEnum2B f2; }

diff --git a/testdata/p4_16_samples/v1model-digest-custom-type.p4 b/testdata/p4_16_samples/v1model-digest-custom-type.p4
@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2020 VMware, Inc.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 // P4 program adapted from one submitted by Andy Fingerhut (@jafingerhut) in https://github.com/p4lang/p4c/issues/2234.
 #include <core.p4>
 #include <v1model.p4>

diff --git a/testdata/p4_16_samples_outputs/action_selector_unused-bmv2.p4-stderr b/testdata/p4_16_samples_outputs/action_selector_unused-bmv2.p4-stderr
@@ -1,9 +1,9 @@
-action_selector_unused-bmv2.p4(14): [--Wwarn=unused] warning: 'empty' is unused
+action_selector_unused-bmv2.p4(20): [--Wwarn=unused] warning: 'empty' is unused
 action empty() { }
        ^^^^^
-action_selector_unused-bmv2.p4(18): [--Wwarn=unused] warning: 'drop' is unused
+action_selector_unused-bmv2.p4(24): [--Wwarn=unused] warning: 'drop' is unused
     action drop() { mark_to_drop(smeta); }
            ^^^^
-action_selector_unused-bmv2.p4(20): [--Wwarn=unused] warning: 'as' is unused
+action_selector_unused-bmv2.p4(26): [--Wwarn=unused] warning: 'as' is unused
     action_selector (HashAlgorithm.identity, 32w1024, 32w10) as;
                                                              ^^
diff --git a/testdata/p4_16_samples_outputs/same_name_for_table_and_action.p4-stderr b/testdata/p4_16_samples_outputs/same_name_for_table_and_action.p4-stderr
@@ -1,3 +1,3 @@
-same_name_for_table_and_action.p4(13): [--Wwarn=unused] warning: 'empty' is unused
+same_name_for_table_and_action.p4(19): [--Wwarn=unused] warning: 'empty' is unused
 action empty() { }
        ^^^^^
diff --git a/testdata/p4_16_samples_outputs/v1model-digest-custom-type.p4-stderr b/testdata/p4_16_samples_outputs/v1model-digest-custom-type.p4-stderr
@@ -1,12 +1,12 @@
-v1model-digest-custom-type.p4(9): [--Wwarn=unused] warning: 'switchID_t' is unused
+v1model-digest-custom-type.p4(15): [--Wwarn=unused] warning: 'switchID_t' is unused
 typedef bit<32> switchID_t;
                 ^^^^^^^^^^
-v1model-digest-custom-type.p4(10): [--Wwarn=unused] warning: 'qdepth_t' is unused
+v1model-digest-custom-type.p4(16): [--Wwarn=unused] warning: 'qdepth_t' is unused
 typedef bit<19> qdepth_t;
                 ^^^^^^^^
-v1model-digest-custom-type.p4(11): [--Wwarn=unused] warning: 'timestamp_t' is unused
+v1model-digest-custom-type.p4(17): [--Wwarn=unused] warning: 'timestamp_t' is unused
 typedef bit<48> timestamp_t;
                 ^^^^^^^^^^^
-v1model-digest-custom-type.p4(12): [--Wwarn=unused] warning: 'timedelta_t' is unused
+v1model-digest-custom-type.p4(18): [--Wwarn=unused] warning: 'timedelta_t' is unused
 typedef bit<32> timedelta_t;
                 ^^^^^^^^^^^
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1,3 @@
		SPDX-FileCopyrightText: 2017 Barefoot Networks, Inc.

		SPDX-License-Identifier: Apache-2.0