1 files changed, 2 insertions, 0 deletions
diff --git a/src/tbf.h b/src/tbf.h
index bf5f32d6..e95ed204 100644
--- a/src/tbf.h
+++ b/src/tbf.h
@@ -86,6 +86,8 @@ enum gprs_rlcmac_tbf_direction {
 #define GPRS_RLCMAC_FLAG_TO_MASK	0xf0 /* timeout bits */
 
 struct gprs_rlc_data {
+	uint8_t *prepare(size_t block_data_length);
+
 	/* block history */
 	uint8_t block[RLC_MAX_LEN];
 	/* block len  of history */