diff --git a/include/osmocom/gsm/protocol/gsm_08_58.h b/include/osmocom/gsm/protocol/gsm_08_58.h
index 9b641b3..a7b68a7 100644
--- a/include/osmocom/gsm/protocol/gsm_08_58.h
+++ b/include/osmocom/gsm/protocol/gsm_08_58.h
@@ -25,13 +25,20 @@
 
 #include <stdint.h>
 
+/*! \addtogroup rsl
+ *  @{
+ */
+
+/*! \file gsm_08_58.h */
+
+/*! \brief RSL common header */
 struct abis_rsl_common_hdr {
 	uint8_t	msg_discr;
 	uint8_t	msg_type;
 	uint8_t	data[0];
 } __attribute__ ((packed));
 
-/* Chapter 8.3 */
+/* \brief RSL RLL header (Chapter 8.3) */
 struct abis_rsl_rll_hdr {
 	struct abis_rsl_common_hdr c;
 	uint8_t	ie_chan;
@@ -41,7 +48,7 @@
 	uint8_t	data[0];
 } __attribute__ ((packed));
 
-/* Chapter 8.3 and 8.4 */
+/* \brief RSL Dedicated Channel header (Chapter 8.3 and 8.4) */
 struct abis_rsl_dchan_hdr {
 	struct abis_rsl_common_hdr c;
 	uint8_t	ie_chan;
@@ -49,7 +56,7 @@
 	uint8_t	data[0];
 } __attribute__ ((packed));
 
-/* Chapter 8.5 */
+/* \brief RSL Common Channel header (Chapter 8.5) */
 struct abis_rsl_cchan_hdr {
 	struct abis_rsl_common_hdr c;
 	uint8_t	ie_chan;
@@ -69,7 +76,7 @@
 
 #define ABIS_RSL_MDISC_IS_TRANSP(x)	(x & 0x01)
 
-/* Chapter 9.1 */
+/* \brief RSL Message Tyoe (Chapter 9.1) */
 enum abis_rsl_msgtype {
 	/* Radio Link Layer Management */
 	RSL_MT_DATA_REQ			= 0x01,
@@ -169,7 +176,7 @@
 	RSL_MT_IPAC_DLCX_NACK,
 };
 
-/* Siemens vendor-specific */
+/*! \brief Siemens vendor-specific RSL message types */
 enum abis_rsl_msgtype_siemens {
 	RSL_MT_SIEMENS_MRPCI		= 0x41,
 	RSL_MT_SIEMENS_INTRAC_HO_COND_IND = 0x42,
@@ -189,7 +196,7 @@
 	RSL_MT_SIEMENS_MODIF_COND_IND	= 0x50,
 };
 
-/* Chapter 9.3 */
+/*! \brief RSL Information Element Identifiers (Chapter 9.3) */
 enum abis_rsl_ie {
 	RSL_IE_CHAN_NR			= 0x01,
 	RSL_IE_LINK_IDENT,
@@ -302,7 +309,7 @@
 #define RSL_ACT_SECOND_ADD	0x04
 #define RSL_ACT_SECOND_MULTI	0x05
 
-/* Chapter 9.3.6 */
+/*! \brief RSL Channel Mode IF (Chapter 9.3.6) */
 struct rsl_ie_chan_mode {
 	uint8_t dtx_dtu;
 	uint8_t spd_ind;
@@ -329,7 +336,7 @@
 #define RSL_CMOD_SP_NT_12k0	0x50
 #define RSL_CMOD_SP_NT_6k0	0x51
 
-/* Chapter 9.3.5 */
+/*! \brief RSL Channel Identification IE (Chapter 9.3.5) */
 struct rsl_ie_chan_ident {
 	/* GSM 04.08 10.5.2.5 */
 	struct {
@@ -441,7 +448,7 @@
 #define RSL_CHANNEED_TCH_F	0x02
 #define RSL_CHANNEED_TCH_ForH	0x03
 
-/* Chapter 9.3.45 */
+/*! \brief RSL Cell Broadcast Command (Chapter 9.3.45) */
 struct rsl_ie_cb_cmd_type {
 	uint8_t last_block:2;
 	uint8_t spare:1;
@@ -542,5 +549,6 @@
 	RSL_MRPCI_PHASE_2PLUS	= 3,
 };
 
+/*! }@ */
 
 #endif /* PROTO_GSM_08_58_H */