/* IP.h -- clean-room shim for the subset of SEGGER emNET (embOS/IP) API
 * that wolfSSL's WOLFSSL_EMNET port compiles against. Written from the
 * public API surface documented in SEGGER UM07001; contains no SEGGER
 * source.
 *
 * Scope: enough to build wolfSSL with -DWOLFSSL_EMNET on a POSIX host
 * for CI test purposes. Only error constants and IP_SOCK_getsockopt
 * are provided here; send/recv fall through to glibc's POSIX
 * implementation, and the canonical IP_ERR_* lookup is emulated by
 * IP_SOCK_getsockopt in emnet_shim.c.
 */

#ifndef WOLFSSL_EMNET_SHIM_IP_H
#define WOLFSSL_EMNET_SHIM_IP_H

#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>

#ifdef __cplusplus
extern "C" {
#endif

/* emNET error codes (UM07001). Values match the public ABI. */
#define IP_ERR_CONN_ABORTED   (-5)
#define IP_ERR_WOULD_BLOCK    (-6)
#define IP_ERR_CONN_REFUSED   (-7)
#define IP_ERR_CONN_RESET     (-8)
#define IP_ERR_PIPE          (-13)
#define IP_ERR_FAULT         (-25)

/* BSD-style socket option retrieval. Signature matches the SEGGER
 * emNET API (UM07001, IP_Socket.h): the length is passed by value as
 * a plain int, not a POSIX socklen_t* / int*. */
int IP_SOCK_getsockopt(int hSock, int Level, int Name,
                       void *pVal, int ValLen);

#ifdef __cplusplus
}
#endif

#endif /* WOLFSSL_EMNET_SHIM_IP_H */