Plugin - init NAT

Change-Id: I072b3bc018812d9f51cb7269bfdbb98b19db873c
Signed-off-by: Andrej Kozemcak <andrej.kozemcak@pantheon.tech>

1 files changed, 40 insertions, 0 deletions

diff --git a/src/plugins/sys_util.h b/src/plugins/sys_util.h
index 6c227c3..d449712 100644
--- a/src/plugins/sys_util.h
+++ b/src/plugins/sys_util.h
@@ -34,4 +34,44 @@ void log_recv_event(sr_notif_event_t event, const char *msg);
 void log_recv_oper(sr_change_oper_t oper, const char *msg);
 int ip_prefix_split(const char* ip_prefix);
 
+/**
+ * @brief Get IPv4 host address from IPv4 prefix.
+ *
+ * @param[out] dst Host IPv4 address.
+ * @param[in] src IPv4 Prefix.
+ * @param[in] length dst buffer length.
+ * @param[out] prefix Get Prefix length, optional value. Can be NULL.
+ * @return -1 when failure, 0 on success.
+ */
+int get_address_from_prefix(char* dst, const char* src, size_t length,
+                            uint8_t* prefix_length);
+
+typedef struct
+{
+    uint8_t address[4];
+} sc_ipv4_addr;
+
+/**
+ * @brief Get IPv4 broadcast IP address form IPv4 network address.
+ *
+ * @param[out] broadcat Broadcast Ipv4 address.
+ * @param[in] network Network IPv4 address.
+ * @param[in] prefix Prefix number.
+ * @return -1 when failure, 0 on success.
+ */
+int get_network_broadcast(sc_ipv4_addr *broadcast, const sc_ipv4_addr *network,
+                          uint8_t prefix_length);
+
+/**
+ * @brief Get last IPv4 address from the IP range.
+ *
+ * @param[out] last_ip_address Last Ipv4 address.
+ * @param[in] first_ip_address First IPv4 address.
+ * @param[in] prefix Prefix number.
+ * @return -1 when failure, 0 on success.
+ */
+int get_last_ip_address(sc_ipv4_addr *last_ip_address,
+                        const sc_ipv4_addr *first_ip_address,
+                        uint8_t prefix_length);
+
 #endif /* __SYS_UTIL_H__ */