Here are the data structures with brief descriptions:

C_SlNetIf_Config_t	SlNetIf_Config_t structure contains all the function callbacks that are expected to be filled by the relevant network stack interface Each interface has different capabilities, so not all the API's must be supported therefore an API's can be defined as:
C_SlNetIf_t	The SlNetIf_t structure holds the configuration of the interface Its ID, name, flags and the configuration list - SlNetIf_Config_t
C_SlNetSock_Addr_t	IpV4 socket address
C_SlNetSock_AddrIn6_t	SlNetSock IPv6 address, Internet style
C_SlNetSock_AddrIn_t	SlNetSock IPv4 address, Internet style
C_SlNetSock_In6Addr_t	IpV6 or Ipv6 EUI64
C_SlNetSock_InAddr_t	Internet address
C_SlNetSock_IpMreq_t	The SlNetSock_IpMreq_t structure is used in SLNETSOCK_OPIP_ADD_MEMBERSHIP/SLNETSOCK_OPIP_DROP_MEMBERSHIP IP level option
C_SlNetSock_IpV6Mreq_t	The SlNetSock_IpV6Mreq_t structure is used in SLNETSOCK_OPIPV6_ADD_MEMBERSHIP/SLNETSOCK_OPIPV6_DROP_MEMBERSHIP IP level option
C_SlNetSock_Keepalive_t	The SlNetSock_Keepalive_t structure is used in SLNETSOCK_OPSOCK_KEEPALIVE socket level option
C_SlNetSock_linger_t	The SlNetSock_linger_t structure is used in SLNETSOCK_OPSOCK_LINGER socket level option
C_SlNetSock_Nonblocking_t	The SlNetSock_Nonblocking_t structure is used in SLNETSOCK_OPSOCK_NON_BLOCKING socket level option
C_SlNetSock_NonIpBoundary_t	The SlNetSock_NonIpBoundary_t structure is used in SLNETSOCK_OPSOCK_NON_IP_BOUNDARY socket level option
C_SlNetSock_SdSet_t	The SlNetSock_SdSet_t structure holds the sd array for SlNetSock_select function
C_SlNetSock_SecAttribNode_t	Secure socket attribute context
C_SlNetSock_SecureALPN_t	Secure ALPN structure
C_SlNetSock_SecureMask_t	Secure Mask structure
C_SlNetSock_SecureMethod_t	Secure Method structure
C_SlNetSock_Timeval_t	The SlNetSock_Timeval_t structure is used in SLNETSOCK_OPSOCK_RCV_TIMEO socket level option
C_SlNetSock_TransceiverRxOverHead_t	The SlNetSock_TransceiverRxOverHead_t structure holds the data for Rx transceiver mode using a raw socket when using SlNetSock_recv function
C_SlNetSock_Winsize_t	The SlNetSock_Winsize_t structure is used in SLNETSOCK_OPSOCK_RCV_BUF socket level option