From 622ac27bfa6f4fd1c4d1b82a911978078bfd621d Mon Sep 17 00:00:00 2001
From: patacongo <patacongo@7fd9a85b-ad96-42d3-883c-3090e2eb8679>
Date: Mon, 30 Jan 2012 21:29:59 +0000
Subject: Add new psock layer; telnet session is now wrapped in a character
 device

git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@4347 7fd9a85b-ad96-42d3-883c-3090e2eb8679
---
 nuttx/net/send.c | 80 +++++++++++++++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 74 insertions(+), 6 deletions(-)

(limited to 'nuttx/net/send.c')

diff --git a/nuttx/net/send.c b/nuttx/net/send.c
index 4eceddffc..087b43351 100644
--- a/nuttx/net/send.c
+++ b/nuttx/net/send.c
@@ -1,8 +1,8 @@
 /****************************************************************************
  * net/send.c
  *
- *   Copyright (C) 2007-2011 Gregory Nutt. All rights reserved.
- *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *   Copyright (C) 2007-2012 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -336,7 +336,7 @@ end_wait:
  ****************************************************************************/
 
 /****************************************************************************
- * Function: send
+ * Function: psock_send
  *
  * Description:
  *   The send() call may be used only when the socket is in a connected state
@@ -346,7 +346,7 @@ end_wait:
  *   equivalent to sendto(sockfd,buf,len,flags,NULL,0).
  *
  * Parameters:
- *   sockfd   Socket descriptor of socket
+ *   psock    And instance of the internal socket structure.
  *   buf      Data to send
  *   len      Length of data to send
  *   flags    Send flags
@@ -399,9 +399,8 @@ end_wait:
  *
  ****************************************************************************/
 
-ssize_t send(int sockfd, const void *buf, size_t len, int flags)
+ssize_t psock_send(FAR struct socket *psock, const void *buf, size_t len, int flags)
 {
-  FAR struct socket *psock = sockfd_socket(sockfd);
   struct send_s state;
   uip_lock_t save;
   int err;
@@ -525,4 +524,73 @@ errout:
   return ERROR;
 }
 
+/****************************************************************************
+ * Function: send
+ *
+ * Description:
+ *   The send() call may be used only when the socket is in a connected state
+ *   (so that the intended recipient is known). The only difference between
+ *   send() and write() is the presence of flags. With zero flags parameter,
+ *   send() is equivalent to write(). Also, send(sockfd,buf,len,flags) is
+ *   equivalent to sendto(sockfd,buf,len,flags,NULL,0).
+ *
+ * Parameters:
+ *   sockfd   Socket descriptor of socket
+ *   buf      Data to send
+ *   len      Length of data to send
+ *   flags    Send flags
+ *
+ * Returned Value:
+ *   On success, returns the number of characters sent.  On  error,
+ *   -1 is returned, and errno is set appropriately:
+ *
+ *   EAGAIN or EWOULDBLOCK
+ *     The socket is marked non-blocking and the requested operation
+ *     would block.
+ *   EBADF
+ *     An invalid descriptor was specified.
+ *   ECONNRESET
+ *     Connection reset by peer.
+ *   EDESTADDRREQ
+ *     The socket is not connection-mode, and no peer address is set.
+ *   EFAULT
+ *      An invalid user space address was specified for a parameter.
+ *   EINTR
+ *      A signal occurred before any data was transmitted.
+ *   EINVAL
+ *      Invalid argument passed.
+ *   EISCONN
+ *     The connection-mode socket was connected already but a recipient
+ *     was specified. (Now either this error is returned, or the recipient
+ *     specification is ignored.)
+ *   EMSGSIZE
+ *     The socket type requires that message be sent atomically, and the
+ *     size of the message to be sent made this impossible.
+ *   ENOBUFS
+ *     The output queue for a network interface was full. This generally
+ *     indicates that the interface has stopped sending, but may be
+ *     caused by transient congestion.
+ *   ENOMEM
+ *     No memory available.
+ *   ENOTCONN
+ *     The socket is not connected, and no target has been given.
+ *   ENOTSOCK
+ *     The argument s is not a socket.
+ *   EOPNOTSUPP
+ *     Some bit in the flags argument is inappropriate for the socket
+ *     type.
+ *   EPIPE
+ *     The local end has been shut down on a connection oriented socket.
+ *     In this case the process will also receive a SIGPIPE unless
+ *     MSG_NOSIGNAL is set.
+ *
+ * Assumptions:
+ *
+ ****************************************************************************/
+
+ssize_t send(int sockfd, const void *buf, size_t len, int flags)
+{
+  return psock_send(sockfd_socket(sockfd), buf, len, flags);
+}
+
 #endif /* CONFIG_NET && CONFIG_NET_TCP */
-- 
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