Separate net/net_send_buffered.c and net/net_send_unbuffered.c to net/tcp/tcp_send_buffered.c, net/tcp/tcp_send_unbuffered.c, and pkt/pkt_send.c

1 files changed, 98 insertions, 0 deletions

diff --git a/nuttx/net/send.c b/nuttx/net/send.c
index 3efa93b5a..cbec0f7de 100644
--- a/nuttx/net/send.c
+++ b/nuttx/net/send.c
@@ -43,6 +43,8 @@
 #include <sys/types.h>
 #include <sys/socket.h>
 
+#include "tcp/tcp.h"
+#include "pkt/pkt.h"
 #include "net_internal.h"
 
 /****************************************************************************
@@ -62,6 +64,102 @@
  ****************************************************************************/
 
 /****************************************************************************
+ * Function: psock_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:
+ *   psock    An instance of the internal socket structure.
+ *   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 psock_send(FAR struct socket *psock, FAR const void *buf, size_t len,
+                   int flags)
+{
+  int ret;
+
+  switch (psock->s_type)
+    {
+#if defined(CONFIG_NET_PKT)
+      case SOCK_RAW:
+        {
+          ret = pkt_send(psock, buf, len);
+          break;
+        }
+#endif
+
+#if defined(CONFIG_NET_TCP)
+      case SOCK_STREAM:
+        {
+          ret = tcp_send(psock, buf, len);
+          break;
+        }
+#endif
+
+      default:
+        {
+          ret = ERROR;
+        }
+    }
+
+  return ret;
+}
+
+/****************************************************************************
  * Function: send
  *
  * Description: