Adding upstream version 2.1.9+dfsg.upstream/2.1.9+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 227 insertions, 0 deletions

diff --git a/src/tcp_window_size.c b/src/tcp_window_size.c
new file mode 100644
index 0000000..4b5d79b
--- /dev/null
+++ b/src/tcp_window_size.c
@@ -0,0 +1,227 @@
+/*---------------------------------------------------------------
+ * Copyright (c) 1999,2000,2001,2002,2003
+ * The Board of Trustees of the University of Illinois
+ * All Rights Reserved.
+ *---------------------------------------------------------------
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software (Iperf) and associated
+ * documentation files (the "Software"), to deal in the Software
+ * without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute,
+ * sublicense, and/or sell copies of the Software, and to permit
+ * persons to whom the Software is furnished to do
+ * so, subject to the following conditions:
+ *
+ *
+ * Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and
+ * the following disclaimers.
+ *
+ *
+ * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimers in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ *
+ * Neither the names of the University of Illinois, NCSA,
+ * nor the names of its contributors may be used to endorse
+ * or promote products derived from this Software without
+ * specific prior written permission.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE CONTIBUTORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * ________________________________________________________________
+ * National Laboratory for Applied Network Research
+ * National Center for Supercomputing Applications
+ * University of Illinois at Urbana-Champaign
+ * http://www.ncsa.uiuc.edu
+ * ________________________________________________________________
+ *
+ * tcp_window_size.c
+ * by Mark Gates <mgates@nlanr.net>
+ * -------------------------------------------------------------------
+ * set/getsockopt
+ * ------------------------------------------------------------------- */
+
+#include "headers.h"
+
+#include "util.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* -------------------------------------------------------------------
+ * If inTCPWin > 0, set the TCP window size (via the socket buffer
+ * sizes) for inSock. Otherwise leave it as the system default.
+ *
+ * This must be called prior to calling listen() or connect() on
+ * the socket, for TCP window sizes > 64 KB to be effective.
+ *
+ * This now works on UNICOS also, by setting TCP_WINSHIFT.
+ * This now works on AIX, by enabling RFC1323.
+ * returns -1 on error, 0 on no error.
+ * ------------------------------------------------------------------- */
+
+int setsock_tcp_windowsize (int inSock, int inTCPWin, int inSend) {
+#ifdef SO_SNDBUF
+    int rc;
+    int newTCPWin;
+
+    assert(inSock >= 0);
+    if (inTCPWin > 0) {
+#ifdef TCP_WINSHIFT
+        /* UNICOS requires setting the winshift explicitly */
+        if (inTCPWin > 65535) {
+            int winShift = 0;
+            int scaledWin = inTCPWin >> 16;
+            while (scaledWin > 0) {
+                scaledWin >>= 1;
+                winShift++;
+            }
+
+            /* set TCP window shift */
+            rc = setsockopt(inSock, IPPROTO_TCP, TCP_WINSHIFT,
+                             (char*) &winShift, sizeof(winShift));
+            if (rc < 0) {
+                return rc;
+            }
+
+            /* Note: you cannot verify TCP window shift, since it returns
+             * a structure and not the same integer we use to set it. (ugh) */
+        }
+#endif /* TCP_WINSHIFT  */
+
+#ifdef TCP_RFC1323
+        /* On AIX, RFC 1323 extensions can be set system-wide,
+         * using the 'no' network options command. But we can also set them
+         * per-socket, so let's try just in case. */
+        if (inTCPWin > 65535) {
+            /* enable RFC 1323 */
+            int on = 1;
+            rc = setsockopt(inSock, IPPROTO_TCP, TCP_RFC1323,
+                             (char*) &on, sizeof(on));
+            if (rc < 0) {
+                return rc;
+            }
+        }
+#endif /* TCP_RFC1323 */
+
+        if (!inSend) {
+            /* receive buffer -- set
+             * note: results are verified after connect() or listen(),
+             * since some OS's don't show the corrected value until then. */
+            newTCPWin = inTCPWin;
+            rc = setsockopt(inSock, SOL_SOCKET, SO_RCVBUF,
+                             (char*) &newTCPWin, sizeof(newTCPWin));
+        } else {
+            /* send buffer -- set
+             * note: results are verified after connect() or listen(),
+             * since some OS's don't show the corrected value until then. */
+            newTCPWin = inTCPWin;
+            rc = setsockopt(inSock, SOL_SOCKET, SO_SNDBUF,
+                             (char*) &newTCPWin, sizeof(newTCPWin));
+        }
+        if (rc < 0) {
+            return rc;
+        }
+    }
+#endif /* SO_SNDBUF */
+    return 0;
+} /* end setsock_tcp_windowsize */
+
+/* -------------------------------------------------------------------
+ * returns the TCP window size (on the sending buffer, SO_SNDBUF),
+ * or -1 on error.
+ * ------------------------------------------------------------------- */
+
+int getsock_tcp_windowsize (int inSock, int inSend) {
+    int rc = -1;
+#ifdef SO_SNDBUF
+    Socklen_t len;
+    int theTCPWin = 0;
+    /* send buffer -- query for buffer size */
+    len = sizeof(theTCPWin);
+    if (inSend) {
+        rc = getsockopt(inSock, SOL_SOCKET, SO_SNDBUF,
+                         (char*) &theTCPWin, &len);
+    } else {
+        rc = getsockopt(inSock, SOL_SOCKET, SO_RCVBUF,
+                         (char*) &theTCPWin, &len);
+    }
+    if (rc == 0) {
+        rc = theTCPWin;
+    }
+#endif
+    return rc;
+} /* end getsock_tcp_windowsize */
+
+#if HAVE_DECL_TCP_WINDOW_CLAMP
+int setsock_tcp_windowclamp (int inSock, int clampsize) {
+    assert(inSock >= 0);
+    assert(clampsize > 0);
+    int rc;
+    Socklen_t len;
+
+    len = sizeof(clampsize);
+    rc = setsockopt(inSock, IPPROTO_TCP, TCP_WINDOW_CLAMP, (char*)(&clampsize), len);
+    WARN_errno(rc == SOCKET_ERROR, "setsockopt TCP_WINDOW_CLAMP");
+    return rc;
+}
+
+int getsock_tcp_windowclamp (int inSock) {
+    assert(inSock >= 0);
+    int clamp = 0;
+    int rc;
+    Socklen_t len;
+
+    /* send buffer -- query for buffer size */
+    len = sizeof(clamp);
+    rc = getsockopt(inSock, IPPROTO_TCP, TCP_WINDOW_CLAMP, (char*)(&clamp), &len);
+    WARN_errno(rc == SOCKET_ERROR, "getsockopt TCP_WINDOW_CLAMP");
+    if (rc < 0) {
+	return rc;
+    }
+    return clamp;
+}
+#endif
+
+#if HAVE_DECL_TCP_NOTSENT_LOWAT
+int setsock_tcp_notsent_low_watermark (int inSock, int watermark) {
+    assert(inSock >= 0);
+    assert(watermark > 0);
+    int rc;
+    Socklen_t len;
+
+    len = sizeof(watermark);
+    rc = setsockopt(inSock, IPPROTO_TCP, TCP_NOTSENT_LOWAT, (char*)(&watermark), len);
+    WARN_errno(rc == SOCKET_ERROR, "setsockopt TCP_NOTSENT_LOWAT");
+    return rc;
+}
+
+int getsock_tcp_notsent_low_watermark (int inSock) {
+    assert(inSock >= 0);
+    int watermark = 0;
+    int rc;
+    Socklen_t len;
+
+    /* send buffer -- query for buffer size */
+    len = sizeof(watermark);
+    rc = getsockopt(inSock, IPPROTO_TCP, TCP_NOTSENT_LOWAT, (char*)(&watermark), &len);
+    WARN_errno(rc == SOCKET_ERROR, "getsockopt TCP_NOTSENT_LOWAT");
+    if (rc < 0) {
+	return rc;
+    }
+    return watermark;
+}
+#endif
+#ifdef __cplusplus
+} /* end extern "C" */
+#endif