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-rw-r--r--net/6lowpan/nhc_ghc_ext_hop.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/net/6lowpan/nhc_ghc_ext_hop.c b/net/6lowpan/nhc_ghc_ext_hop.c
new file mode 100644
index 000000000..3beedf514
--- /dev/null
+++ b/net/6lowpan/nhc_ghc_ext_hop.c
@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * 6LoWPAN Extension Header compression according to RFC7400
+ */
+
+#include "nhc.h"
+
+#define LOWPAN_GHC_EXT_HOP_IDLEN 1
+#define LOWPAN_GHC_EXT_HOP_ID_0 0xb0
+#define LOWPAN_GHC_EXT_HOP_MASK_0 0xfe
+
+static void hop_ghid_setup(struct lowpan_nhc *nhc)
+{
+ nhc->id[0] = LOWPAN_GHC_EXT_HOP_ID_0;
+ nhc->idmask[0] = LOWPAN_GHC_EXT_HOP_MASK_0;
+}
+
+LOWPAN_NHC(ghc_ext_hop, "RFC7400 Hop-by-Hop Extension Header", NEXTHDR_HOP, 0,
+ hop_ghid_setup, LOWPAN_GHC_EXT_HOP_IDLEN, NULL, NULL);
+
+module_lowpan_nhc(ghc_ext_hop);
+MODULE_DESCRIPTION("6LoWPAN generic header hop-by-hop extension compression");
+MODULE_LICENSE("GPL");