diff --git a/lib/librte_cfgfile/rte_cfgfile.h b/lib/librte_cfgfile/rte_cfgfile.h
index e81a5a2724..b40e6a1359 100644
--- a/lib/librte_cfgfile/rte_cfgfile.h
+++ b/lib/librte_cfgfile/rte_cfgfile.h
@@ -88,7 +88,7 @@ struct rte_cfgfile *rte_cfgfile_load(const char *filename, int flags);
 * @param length
 *   Maximum section name length
 * @return
-*   0 on success, error code otherwise
+*   Number of sections
 */
 int rte_cfgfile_num_sections(struct rte_cfgfile *cfg, const char *sec_name,
 	size_t length);
@@ -102,13 +102,13 @@ int rte_cfgfile_num_sections(struct rte_cfgfile *cfg, const char *sec_name,
 * @param cfg
 *   Config file
 * @param sections
-*   Array containing section names after successful invocation. Each elemen
+*   Array containing section names after successful invocation. Each element
 *   of this array should be preallocated by the user with at least
 *   CFG_NAME_LEN characters.
 * @param max_sections
 *   Maximum number of section names to be stored in sections array
 * @return
-*   0 on success, error code otherwise
+*   Number of populated sections names
 */
 int rte_cfgfile_sections(struct rte_cfgfile *cfg, char *sections[],
 	int max_sections);
@@ -136,12 +136,13 @@ int rte_cfgfile_has_section(struct rte_cfgfile *cfg, const char *sectionname);
 * @param sectionname
 *   Section name
 * @return
-*   Number of entries in section
+*   Number of entries in section on success, -1 otherwise
 */
 int rte_cfgfile_section_num_entries(struct rte_cfgfile *cfg,
 	const char *sectionname);
 
-/** Get section entries as key-value pairs
+/**
+* Get section entries as key-value pairs
 *
 * If multiple sections have the given name this function operates on the
 * first one.
@@ -156,14 +157,15 @@ int rte_cfgfile_section_num_entries(struct rte_cfgfile *cfg,
 * @param max_entries
 *   Maximum number of section entries to be stored in entries array
 * @return
-*   0 on success, error code otherwise
+*   Number of entries populated on success, -1 otherwise
 */
 int rte_cfgfile_section_entries(struct rte_cfgfile *cfg,
 	const char *sectionname,
 	struct rte_cfgfile_entry *entries,
 	int max_entries);
 
-/** Get section entries as key-value pairs
+/**
+* Get section entries as key-value pairs
 *
 * The index of a section is the same as the index of its name in the
 * result of rte_cfgfile_sections. This API can be used when there are
@@ -182,7 +184,7 @@ int rte_cfgfile_section_entries(struct rte_cfgfile *cfg,
 * @param max_entries
 *   Maximum number of section entries to be stored in entries array
 * @return
-*   Number of entries populated on success, negative error code otherwise
+*   Number of entries populated on success, -1 otherwise
 */
 int rte_cfgfile_section_entries_by_index(struct rte_cfgfile *cfg,
 	int index,
@@ -190,7 +192,8 @@ int rte_cfgfile_section_entries_by_index(struct rte_cfgfile *cfg,
 	struct rte_cfgfile_entry *entries,
 	int max_entries);
 
-/** Get value of the named entry in named config file section
+/**
+* Get value of the named entry in named config file section
 *
 * If multiple sections have the given name this function operates on the
 * first one.
@@ -202,13 +205,14 @@ int rte_cfgfile_section_entries_by_index(struct rte_cfgfile *cfg,
 * @param entryname
 *   Entry name
 * @return
-*   Entry value
+*   Entry value on success, NULL otherwise
 */
 const char *rte_cfgfile_get_entry(struct rte_cfgfile *cfg,
 	const char *sectionname,
 	const char *entryname);
 
-/** Check if given entry exists in named config file section
+/**
+* Check if given entry exists in named config file section
 *
 * If multiple sections have the given name this function operates on the
 * first one.
@@ -225,12 +229,13 @@ const char *rte_cfgfile_get_entry(struct rte_cfgfile *cfg,
 int rte_cfgfile_has_entry(struct rte_cfgfile *cfg, const char *sectionname,
 	const char *entryname);
 
-/** Close config file
+/**
+* Close config file
 *
 * @param cfg
 *   Config file
 * @return
-*   0 on success, error code otherwise
+*   0 on success, -1 otherwise
 */
 int rte_cfgfile_close(struct rte_cfgfile *cfg);