LICENSES: Add license text files, add missing notices, fix SPDX tags

SPDX tags don't replace license files. Some notices were missing and
some tags were not according to the SPDX specification, too.

Now reuse --lint from the REUSE tool (https://reuse.software/) passes.

Reported-by: Martin Hauke <mardnh@gmx.de>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/tap.h b/tap.h
index a87c121..c437f5f 100644
--- a/tap.h
+++ b/tap.h
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: AGPL-3.0-or-later
+ * Copyright (c) 2021 Red Hat GmbH
+ * Author: Stefano Brivio <sbrivio@redhat.com>
+ */
+
 void tap_ip_send(struct ctx *c, struct in6_addr *src, uint8_t proto,
 		 char *in, size_t len, uint32_t flow);
 int tap_send(struct ctx *c, void *data, size_t len, int vnet_pre);