\doxysection{osmo\+\_\+io\+\_\+ops Struct Reference}
\label{structosmo__io__ops}\index{osmo\_io\_ops@{osmo\_io\_ops}}


{\ttfamily \#include $<$osmo\+\_\+io.\+h$>$}

\doxysubsection*{Data Fields}
\begin{DoxyCompactItemize}
\item 
\begin{tabbing}
xx\=xx\=xx\=xx\=xx\=xx\=xx\=xx\=xx\=\kill
union \{\\
\>struct \{\\
\>\>void($\ast$ \textbf{ read\_cb} )(struct \textbf{ osmo\_io\_fd} $\ast$iofd, int \\
\>\>\>\textbf{ res}, struct \textbf{ msgb} $\ast$\textbf{ msg})\\
\>\>\>{\em call-\/back function when something was read from fd }\\
\>\>void($\ast$ \textbf{ write\_cb} )(struct \textbf{ osmo\_io\_fd} $\ast$iofd, int \\
\>\>\>\textbf{ res}, struct \textbf{ msgb} $\ast$\textbf{ msg})\\
\>\>\>{\em call-\/back function when write has completed on fd }\\
\>\>int($\ast$ \textbf{ segmentation\_cb} )(struct \textbf{ msgb} $\ast$\textbf{ msg})\\
\>\>\>{\em call-\/back function to segment the data at message boundaries. }\\
\>\} \\
\>struct \{\\
\>\>void($\ast$ \textbf{ recvfrom\_cb} )(struct \textbf{ osmo\_io\_fd} $\ast$iofd, int \\
\>\>\>\textbf{ res}, struct \textbf{ msgb} $\ast$\textbf{ msg}, const \\
\>\>\>struct \textbf{ osmo\_sockaddr} $\ast$saddr)\\
\>\>\>{\em call-\/back function emulating recvfrom }\\
\>\>void($\ast$ \textbf{ sendto\_cb} )(struct \textbf{ osmo\_io\_fd} $\ast$iofd, int \\
\>\>\>\textbf{ res}, struct \textbf{ msgb} $\ast$\textbf{ msg}, const \\
\>\>\>struct \textbf{ osmo\_sockaddr} $\ast$daddr)\\
\>\>\>{\em call-\/back function emulating sendto }\\
\>\} \\
\}; \\

\end{tabbing}\end{DoxyCompactItemize}


\doxysubsection{Field Documentation}
\mbox{\label{structosmo__io__ops_a72c4ef6c99982271902c626b41da7698}} 
\doxysubsubsection{}
{\footnotesize\ttfamily union  \{ ... \}  osmo\+\_\+io\+\_\+ops\+::@19}

\mbox{\label{structosmo__io__ops_a0d6ea2f2d5398d1c81f4195be3f1ee13}} 
\index{osmo\_io\_ops@{osmo\_io\_ops}!read\_cb@{read\_cb}}
\index{read\_cb@{read\_cb}!osmo\_io\_ops@{osmo\_io\_ops}}
\doxysubsubsection{read\_cb}
{\footnotesize\ttfamily void($\ast$ osmo\+\_\+io\+\_\+ops\+::read\+\_\+cb) (struct \textbf{ osmo\+\_\+io\+\_\+fd} $\ast$iofd, int \textbf{ res}, struct \textbf{ msgb} $\ast$\textbf{ msg})}



call-\/back function when something was read from fd 

\mbox{\label{structosmo__io__ops_a164b855a40443b2b47463be771e58552}} 
\index{osmo\_io\_ops@{osmo\_io\_ops}!recvfrom\_cb@{recvfrom\_cb}}
\index{recvfrom\_cb@{recvfrom\_cb}!osmo\_io\_ops@{osmo\_io\_ops}}
\doxysubsubsection{recvfrom\_cb}
{\footnotesize\ttfamily void($\ast$ osmo\+\_\+io\+\_\+ops\+::recvfrom\+\_\+cb) (struct \textbf{ osmo\+\_\+io\+\_\+fd} $\ast$iofd, int \textbf{ res}, struct \textbf{ msgb} $\ast$\textbf{ msg}, const struct \textbf{ osmo\+\_\+sockaddr} $\ast$saddr)}



call-\/back function emulating recvfrom 

\mbox{\label{structosmo__io__ops_afbe74fab87f1f05e6fe55704b85e8dd9}} 
\index{osmo\_io\_ops@{osmo\_io\_ops}!segmentation\_cb@{segmentation\_cb}}
\index{segmentation\_cb@{segmentation\_cb}!osmo\_io\_ops@{osmo\_io\_ops}}
\doxysubsubsection{segmentation\_cb}
{\footnotesize\ttfamily int($\ast$ osmo\+\_\+io\+\_\+ops\+::segmentation\+\_\+cb) (struct \textbf{ msgb} $\ast$\textbf{ msg})}



call-\/back function to segment the data at message boundaries. 

Needs to return the size of the next message. If it returns -\/EAGAIN or a value larger than \doxyref{msgb\+\_\+length()}{p.}{group__msgb_ga036077cd924b90a798cb3b6c5541a492} (message is incomplete) osmo\+\_\+io will wait for more data to be read. Other negative values cause the msg to be discarded. If a full message was received (\doxyref{segmentation\+\_\+cb()}{p.}{structosmo__io__ops_afbe74fab87f1f05e6fe55704b85e8dd9} returns a value $<$= \doxyref{msgb\+\_\+length()}{p.}{group__msgb_ga036077cd924b90a798cb3b6c5541a492}) the msgb will be trimmed to size by osmo\+\_\+io and forwarded to the read call-\/back. Any parsing done to the msgb by \doxyref{segmentation\+\_\+cb()}{p.}{structosmo__io__ops_afbe74fab87f1f05e6fe55704b85e8dd9} will be preserved for the \doxyref{read\+\_\+cb()}{p.}{structosmo__io__ops_a0d6ea2f2d5398d1c81f4195be3f1ee13} (e.\+g. setting lxh or msgb-\/$>$cb). \mbox{\label{structosmo__io__ops_a76d3bb8b0f08a19a08c91e8a8949329f}} 
\index{osmo\_io\_ops@{osmo\_io\_ops}!sendto\_cb@{sendto\_cb}}
\index{sendto\_cb@{sendto\_cb}!osmo\_io\_ops@{osmo\_io\_ops}}
\doxysubsubsection{sendto\_cb}
{\footnotesize\ttfamily void($\ast$ osmo\+\_\+io\+\_\+ops\+::sendto\+\_\+cb) (struct \textbf{ osmo\+\_\+io\+\_\+fd} $\ast$iofd, int \textbf{ res}, struct \textbf{ msgb} $\ast$\textbf{ msg}, const struct \textbf{ osmo\+\_\+sockaddr} $\ast$daddr)}



call-\/back function emulating sendto 

\mbox{\label{structosmo__io__ops_a667c25d83ee279b51562cd1b80794c10}} 
\index{osmo\_io\_ops@{osmo\_io\_ops}!write\_cb@{write\_cb}}
\index{write\_cb@{write\_cb}!osmo\_io\_ops@{osmo\_io\_ops}}
\doxysubsubsection{write\_cb}
{\footnotesize\ttfamily void($\ast$ osmo\+\_\+io\+\_\+ops\+::write\+\_\+cb) (struct \textbf{ osmo\+\_\+io\+\_\+fd} $\ast$iofd, int \textbf{ res}, struct \textbf{ msgb} $\ast$\textbf{ msg})}



call-\/back function when write has completed on fd 



The documentation for this struct was generated from the following file\+:\begin{DoxyCompactItemize}
\item 
include/osmocom/core/\textbf{ osmo\+\_\+io.\+h}\end{DoxyCompactItemize}