No, the solution is in errno.h:
Choose one of:
- #define LWIP_PROVIDE_ERRNO 1
- #define LWIP_ERRNO_INCLUDE "path/my_header_file_containing_errno.h"
HTH
Dirk
On Wed, Nov 30, 2016 at 7:45 PM, Amit Ashara <ashara.a...@gmail.com> wrote:
> Hello All,
>
> When integrating FreeRTOS with lwIP 2.0.0 the following gives an error for
> missing defines.
>
> #if !NO_SYS
> /** Table to quickly map an lwIP error (err_t) to a socket error
> * by using -err as an index */
> static const int err_to_errno_table[] = {
> 0, /* ERR_OK 0 No error, everything OK. */
> ENOMEM, /* ERR_MEM -1 Out of memory error. */
> ENOBUFS, /* ERR_BUF -2 Buffer error. */
> EWOULDBLOCK, /* ERR_TIMEOUT -3 Timeout */
> EHOSTUNREACH, /* ERR_RTE -4 Routing problem. */
> EINPROGRESS, /* ERR_INPROGRESS -5 Operation in progress */
> EINVAL, /* ERR_VAL -6 Illegal value. */
> EWOULDBLOCK, /* ERR_WOULDBLOCK -7 Operation would block. */
> EADDRINUSE, /* ERR_USE -8 Address in use. */
> EALREADY, /* ERR_ALREADY -9 Already connecting. */
> EISCONN, /* ERR_ISCONN -10 Conn already established.*/
> ENOTCONN, /* ERR_CONN -11 Not connected. */
> -1, /* ERR_IF -12 Low-level netif error */
> ECONNABORTED, /* ERR_ABRT -13 Connection aborted. */
> ECONNRESET, /* ERR_RST -14 Connection reset. */
> ENOTCONN, /* ERR_CLSD -15 Connection closed. */
> EIO /* ERR_ARG -16 Illegal argument. */
> };
> #endif /* !NO_SYS */
>
> #if !NO_SYS
> int
> err_to_errno(err_t err)
> {
> if ((err > 0) || (-err >= (err_t)LWIP_ARRAYSIZE(err_to_errno_table))) {
> return EIO;
> }
> return err_to_errno_table[-err];
> }
> #endif /* !NO_SYS */
>
> The assumption is that if NO_SYS is 0, or an RTOS is used, the socket
> model will be used. However when not using the socket model this is not
> true. Instead the following should be done (in my opinion)
>
> #if !NO_SYS
> #if LWIP_SOCKET
> /** Table to quickly map an lwIP error (err_t) to a socket error
> * by using -err as an index */
> static const int err_to_errno_table[] = {
> 0, /* ERR_OK 0 No error, everything OK. */
> ENOMEM, /* ERR_MEM -1 Out of memory error. */
> ENOBUFS, /* ERR_BUF -2 Buffer error. */
> EWOULDBLOCK, /* ERR_TIMEOUT -3 Timeout */
> EHOSTUNREACH, /* ERR_RTE -4 Routing problem. */
> EINPROGRESS, /* ERR_INPROGRESS -5 Operation in progress */
> EINVAL, /* ERR_VAL -6 Illegal value. */
> EWOULDBLOCK, /* ERR_WOULDBLOCK -7 Operation would block. */
> EADDRINUSE, /* ERR_USE -8 Address in use. */
> EALREADY, /* ERR_ALREADY -9 Already connecting. */
> EISCONN, /* ERR_ISCONN -10 Conn already established.*/
> ENOTCONN, /* ERR_CONN -11 Not connected. */
> -1, /* ERR_IF -12 Low-level netif error */
> ECONNABORTED, /* ERR_ABRT -13 Connection aborted. */
> ECONNRESET, /* ERR_RST -14 Connection reset. */
> ENOTCONN, /* ERR_CLSD -15 Connection closed. */
> EIO /* ERR_ARG -16 Illegal argument. */
> };
> #endif /* LWIP_SOCKET */
> #endif /* !NO_SYS */
>
> #if !NO_SYS
> #if LWIP_SOCKET
> int
> err_to_errno(err_t err)
> {
> if ((err > 0) || (-err >= (err_t)LWIP_ARRAYSIZE(err_to_errno_table))) {
> return EIO;
> }
> return err_to_errno_table[-err];
> }
> #endif /* LWIP_SOCKET */
> #endif /* !NO_SYS */
>
> Regards
> Amit Ashara
>
> _______________________________________________
> lwip-users mailing list
> lwip-users@nongnu.org
> https://lists.nongnu.org/mailman/listinfo/lwip-users
>
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