new file mode 100644
--- /dev/null
+++ b/packages/net/tcpip/current/tests/linux_echo.c
@@ -0,0 +1,304 @@
+//==========================================================================
+//
+//      tests/linux_echo.c
+//
+//      Simple TCP throughput test - echo component FOR LINUX HOST
+//      * CAUTION: host, i.e. non eCos, only *
+//
+//==========================================================================
+//####COPYRIGHTBEGIN####
+//                                                                          
+// -------------------------------------------                              
+// The contents of this file are subject to the Red Hat eCos Public License 
+// Version 1.1 (the "License"); you may not use this file except in         
+// compliance with the License.  You may obtain a copy of the License at    
+// http://www.redhat.com/                                                   
+//                                                                          
+// Software distributed under the License is distributed on an "AS IS"      
+// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.  See the 
+// License for the specific language governing rights and limitations under 
+// the License.                                                             
+//                                                                          
+// The Original Code is eCos - Embedded Configurable Operating System,      
+// released September 30, 1998.                                             
+//                                                                          
+// The Initial Developer of the Original Code is Red Hat.                   
+// Portions created by Red Hat are                                          
+// Copyright (C) 1998, 1999, 2000, 2001 Red Hat, Inc.                             
+// All Rights Reserved.                                                     
+// -------------------------------------------                              
+//                                                                          
+//####COPYRIGHTEND####
+//####BSDCOPYRIGHTBEGIN####
+//
+// -------------------------------------------
+//
+// Portions of this software may have been derived from OpenBSD or other sources,
+// and are covered by the appropriate copyright disclaimers included herein.
+//
+// -------------------------------------------
+//
+//####BSDCOPYRIGHTEND####
+//==========================================================================
+//#####DESCRIPTIONBEGIN####
+//
+// Author(s):    gthomas
+// Contributors: gthomas
+// Date:         2000-01-10
+// Purpose:      
+// Description:  This is the middle part of a three part test.  The idea is
+//   to test the throughput of box in a configuration like this:
+//
+//      +------+   port   +----+     port    +----+
+//      |SOURCE|=========>|ECHO|============>|SINK|
+//      +------+   9990   +----+     9991    +----+
+// 
+//
+//####DESCRIPTIONEND####
+//
+//==========================================================================
+
+#undef _KERNEL
+#include <stdlib.h>
+#include <unistd.h>
+#include <stdio.h>
+
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <sys/ioctl.h>
+#include <sys/errno.h>
+#include <sys/time.h>
+
+#include <net/if.h>
+#include <netinet/in.h>
+#include <netinet/ip.h>
+#include <netinet/ip_icmp.h>
+#include <net/route.h>
+
+#include <netdb.h>
+
+#define true 1
+#define false 1
+
+#define TNR_ON()
+#define TNR_OFF()
+
+#define diag_printf printf
+
+void
+pexit(char *s)
+{
+    perror(s);
+    exit(1);
+}
+
+
+#define SOURCE_PORT 9990
+#define SINK_PORT   9991
+
+#define MAX_BUF 8192
+static unsigned char data_buf[MAX_BUF];
+
+struct test_params {
+    long nbufs;
+    long bufsize;
+    long load;
+};
+
+struct test_status {
+    long ok;
+};
+
+int max( int a, int b ) { return (a>b)?a:b; }
+int min( int a, int b ) { return (a<b)?a:b; }
+
+
+int
+do_read(int s, void *_buf, int len)
+{
+    int total, slen, rlen;
+    unsigned char *buf = (unsigned char *)_buf;
+    total = 0;
+    rlen = len;
+    while (total < len) {
+        slen = read(s, buf, rlen);
+        if (slen != rlen) {
+            if (slen < 0) {
+                diag_printf("Error after reading %d bytes\n", total);
+                return -1;
+            }
+            rlen -= slen;
+            buf += slen;
+        }
+        total += slen;
+    }
+    return total;
+}
+
+int
+do_write(int s, void *_buf, int len)
+{
+    int total, slen, rlen;
+    unsigned char *buf = (unsigned char *)_buf;
+    total = 0;
+    rlen = len;
+    while (total < len) {
+        slen = write(s, buf, rlen);
+        if (slen != rlen) {
+            if (slen < 0) {
+                diag_printf("Error after writing %d bytes\n", total);
+                return -1;
+            }
+            rlen -= slen;
+            buf += slen;
+        }
+        total += slen;
+    }
+    return total;
+}
+
+static void
+echo_test(void * p)
+{
+    int s_source, s_sink, e_source, e_sink;
+    struct sockaddr_in e_source_addr, e_sink_addr, local;
+    int one = 1;
+    fd_set in_fds;
+    int i, num, len;
+    struct test_params params,nparams;
+    struct test_status status,nstatus;
+
+    s_source = socket(AF_INET, SOCK_STREAM, 0);
+    if (s_source < 0) {
+        pexit("stream socket");
+    }
+    memset(&local, 0, sizeof(local));
+    local.sin_family = AF_INET;
+//    local.sin_len = sizeof(local);
+    local.sin_port = ntohs(SOURCE_PORT);
+    local.sin_addr.s_addr = INADDR_ANY;
+    if(bind(s_source, (struct sockaddr *) &local, sizeof(local)) < 0) {
+        pexit("bind /source/ error");
+    }
+    if (setsockopt(s_source, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one))) {
+        pexit("setsockopt /source/ SO_REUSEADDR");
+    }
+    listen(s_source, SOMAXCONN);
+
+    s_sink = socket(AF_INET, SOCK_STREAM, 0);
+    if (s_sink < 0) {
+        pexit("stream socket");
+    }
+    memset(&local, 0, sizeof(local));
+    local.sin_family = AF_INET;
+//    local.sin_len = sizeof(local);
+    local.sin_port = ntohs(SINK_PORT);
+    local.sin_addr.s_addr = INADDR_ANY;
+    if(bind(s_sink, (struct sockaddr *) &local, sizeof(local)) < 0) {
+        pexit("bind /sink/ error");
+    }
+    if (setsockopt(s_sink, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one))) {
+        pexit("setsockopt /sink/ SO_REUSEADDR");
+    }
+    listen(s_sink, SOMAXCONN);
+
+    e_source = 0;  e_sink = 0;
+    while (true) {
+        // Wait for a connection on either of the ports
+        FD_ZERO(&in_fds);
+        FD_SET(s_source, &in_fds);
+        FD_SET(s_sink, &in_fds);
+        num = select(max(s_sink,s_source)+1, &in_fds, 0, 0, 0);
+        if (FD_ISSET(s_source, &in_fds)) {
+            len = sizeof(e_source_addr);
+            if ((e_source = accept(s_source, (struct sockaddr *)&e_source_addr, &len)) < 0) {
+                pexit("accept /source/");
+            }
+            diag_printf("SOURCE connection from %s:%d\n", 
+                        inet_ntoa(e_source_addr.sin_addr), ntohs(e_source_addr.sin_port));
+        }
+        if (FD_ISSET(s_sink, &in_fds)) {
+            len = sizeof(e_sink_addr);
+            if ((e_sink = accept(s_sink, (struct sockaddr *)&e_sink_addr, &len)) < 0) {
+                pexit("accept /sink/");
+            }
+            diag_printf("SINK connection from %s:%d\n", 
+                        inet_ntoa(e_sink_addr.sin_addr), ntohs(e_sink_addr.sin_port));
+        }
+        // Continue with test once a connection is established in both directions
+        if ((e_source != 0) && (e_sink != 0)) {
+            break;
+        }
+    }
+
+    // Wait for "source" to tell us the testing paramters
+    if (do_read(e_source, &nparams, sizeof(nparams)) != sizeof(nparams)) {
+        pexit("Can't read initialization parameters");
+    }
+  
+    params.nbufs = ntohl(nparams.nbufs);
+    params.bufsize = ntohl(nparams.bufsize);
+    params.load = ntohl(nparams.load);
+  
+    diag_printf("Using %d buffers of %d bytes each, %d%% background load\n", 
+                params.nbufs, params.bufsize, params.load);
+
+    // Tell the sink what the parameters are
+    if (do_write(e_sink, &nparams, sizeof(nparams)) != sizeof(nparams)) {
+        pexit("Can't write initialization parameters");
+    }
+
+    status.ok = 1;
+    nstatus.ok = htonl(status.ok);
+  
+    // Tell the "source" to start - we're all connected and ready to go!
+    if (do_write(e_source, &nstatus, sizeof(nstatus)) != sizeof(nstatus)) {
+        pexit("Can't send ACK to 'source' host");
+    }
+
+    TNR_ON();
+
+    // Echo the data from the source to the sink hosts
+    for (i = 0;  i < params.nbufs;  i++) {
+        if ((len = do_read(e_source, data_buf, params.bufsize)) != params.bufsize) {
+            TNR_OFF();
+            diag_printf("Can't read buf #%d: ", i+1);
+            if (len < 0) {
+                perror("I/O error");
+            } else {
+                diag_printf("short read - only %d bytes\n", len);
+            }
+            TNR_ON();
+        }
+        if ((len = do_write(e_sink, data_buf, params.bufsize)) != params.bufsize) {
+            TNR_OFF();
+            diag_printf("Can't write buf #%d: ", i+1);
+            if (len < 0) {
+                perror("I/O error");
+            } else {
+                diag_printf("short write - only %d bytes\n", len);
+            }
+            TNR_ON();
+        }
+    }
+
+    TNR_OFF();
+
+    // Wait for the data to drain and the "sink" to tell us all is OK.
+    if (do_read(e_sink, &status, sizeof(status)) != sizeof(status)) {
+        pexit("Can't receive ACK from 'sink' host");
+    }
+
+}
+
+
+int
+main(int argc, char *argv[])
+{
+    echo_test(argv[1]);
+    return 0;
+}
+
+
+// EOF
+