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-rw-r--r--lib/flowspec.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/flowspec.h b/lib/flowspec.h
index 57809bec..aa9735f4 100644
--- a/lib/flowspec.h
+++ b/lib/flowspec.h
@@ -42,6 +42,9 @@ const char *flow_type_str(enum flow_type type, int ipv6);
uint flow_write_length(byte *data, u16 len);
+static inline u16 flow_hdr_length(const byte *data)
+{ return ((*data & 0xf0) == 0xf0) ? 2 : 1; }
+
static inline u16 flow_read_length(const byte *data)
{ return ((*data & 0xf0) == 0xf0) ? get_u16(data) & 0x0fff : *data; }