diff -uNr openssh-7.3p1.orig/channels.c openssh-7.3p1/channels.c
--- openssh-7.3p1.orig/channels.c	2016-07-27 15:54:27.000000000 -0700
+++ openssh-7.3p1/channels.c	2016-09-08 17:56:17.155122583 -0700
@@ -189,6 +189,10 @@
 static int connect_next(struct channel_connect *);
 static void channel_connect_ctx_free(struct channel_connect *);
 
+
+static int hpn_disabled = 0;
+static int hpn_buffer_size = 2 * 1024 * 1024;
+
 /* -- channel core */
 
 Channel *
@@ -339,6 +343,7 @@
 	c->local_window_max = window;
 	c->local_consumed = 0;
 	c->local_maxpacket = maxpack;
+	c->dynamic_window = 0;
 	c->remote_id = -1;
 	c->remote_name = xstrdup(remote_name);
 	c->remote_window = 0;
@@ -843,11 +848,39 @@
 		FD_SET(c->sock, writeset);
 }
 
+static int
+channel_tcpwinsz(void)
+{
+	u_int32_t tcpwinsz = 0;
+	socklen_t optsz = sizeof(tcpwinsz);
+	int ret = -1;
+
+	/* if we aren't on a socket return 128KB */
+	if (!packet_connection_is_on_socket())
+		return 128 * 1024;
+
+	ret = getsockopt(packet_get_connection_in(),
+			 SOL_SOCKET, SO_RCVBUF, &tcpwinsz, &optsz);
+	/* return no more than SSHBUF_SIZE_MAX (currently 256MB) */
+	if ((ret == 0) && tcpwinsz > SSHBUF_SIZE_MAX)
+		tcpwinsz = SSHBUF_SIZE_MAX;
+
+	debug2("tcpwinsz: %d for connection: %d", tcpwinsz,
+	       packet_get_connection_in());
+	return tcpwinsz;
+}
+
 static void
 channel_pre_open(Channel *c, fd_set *readset, fd_set *writeset)
 {
 	u_int limit = compat20 ? c->remote_window : packet_get_maxsize();
 
+	/* check buffer limits */
+	if ((!c->tcpwinsz) || (c->dynamic_window > 0))
+		c->tcpwinsz = channel_tcpwinsz();
+
+	limit = MIN(limit, 2 * c->tcpwinsz);
+
 	if (c->istate == CHAN_INPUT_OPEN &&
 	    limit > 0 &&
 	    buffer_len(&c->input) < limit &&
@@ -1865,14 +1898,21 @@
 	    c->local_maxpacket*3) ||
 	    c->local_window < c->local_window_max/2) &&
 	    c->local_consumed > 0) {
+		u_int addition = 0;
+		/* adjust max window size if we are in a dynamic environment */
+		if (c->dynamic_window && (c->tcpwinsz > c->local_window_max)) {
+			/* grow the window somewhat aggressively to maintain pressure */
+			addition = 1.5 * (c->tcpwinsz - c->local_window_max);
+			c->local_window_max += addition;
+		}
 		packet_start(SSH2_MSG_CHANNEL_WINDOW_ADJUST);
 		packet_put_int(c->remote_id);
-		packet_put_int(c->local_consumed);
+		packet_put_int(c->local_consumed + addition);
 		packet_send();
 		debug2("channel %d: window %d sent adjust %d",
 		    c->self, c->local_window,
 		    c->local_consumed);
-		c->local_window += c->local_consumed;
+		c->local_window += c->local_consumed + addition;
 		c->local_consumed = 0;
 	}
 	return 1;
@@ -2236,11 +2276,12 @@
 
 
 /* If there is data to send to the connection, enqueue some of it now. */
-void
+int
 channel_output_poll(void)
 {
 	Channel *c;
 	u_int i, len;
+	int packet_length = 0;
 
 	for (i = 0; i < channels_alloc; i++) {
 		c = channels[i];
@@ -2288,7 +2329,7 @@
 					packet_start(SSH2_MSG_CHANNEL_DATA);
 					packet_put_int(c->remote_id);
 					packet_put_string(data, dlen);
-					packet_send();
+					packet_length = packet_send();
 					c->remote_window -= dlen;
 					free(data);
 				}
@@ -2318,7 +2359,7 @@
 				    SSH2_MSG_CHANNEL_DATA : SSH_MSG_CHANNEL_DATA);
 				packet_put_int(c->remote_id);
 				packet_put_string(buffer_ptr(&c->input), len);
-				packet_send();
+				packet_length = packet_send();
 				buffer_consume(&c->input, len);
 				c->remote_window -= len;
 			}
@@ -2353,12 +2394,13 @@
 			packet_put_int(c->remote_id);
 			packet_put_int(SSH2_EXTENDED_DATA_STDERR);
 			packet_put_string(buffer_ptr(&c->extended), len);
-			packet_send();
+			packet_length = packet_send();
 			buffer_consume(&c->extended, len);
 			c->remote_window -= len;
 			debug2("channel %d: sent ext data %d", c->self, len);
 		}
 	}
+	return packet_length;
 }
 
 
@@ -2816,6 +2858,15 @@
 	return addr;
 }
 
+
+void
+channel_set_hpn(int external_hpn_disabled, int external_hpn_buffer_size)
+{
+	hpn_disabled = external_hpn_disabled;
+	hpn_buffer_size = external_hpn_buffer_size;
+	debug("HPN Disabled: %d, HPN Buffer Size: %d", hpn_disabled, hpn_buffer_size);
+}
+
 static int
 channel_setup_fwd_listener_tcpip(int type, struct Forward *fwd,
     int *allocated_listen_port, struct ForwardOptions *fwd_opts)
@@ -2944,9 +2995,15 @@
 		}
 
 		/* Allocate a channel number for the socket. */
-		c = channel_new("port listener", type, sock, sock, -1,
-		    CHAN_TCP_WINDOW_DEFAULT, CHAN_TCP_PACKET_DEFAULT,
-		    0, "port listener", 1);
+		/* explicitly test for hpn disabled option. if true use smaller window size */
+		if (hpn_disabled)
+			c = channel_new("port listener", type, sock, sock, -1,
+			    CHAN_TCP_WINDOW_DEFAULT, CHAN_TCP_PACKET_DEFAULT,
+			    0, "port listener", 1);
+		else
+			c = channel_new("port listener", type, sock, sock, -1,
+			    hpn_buffer_size, CHAN_TCP_PACKET_DEFAULT,
+			    0, "port listener", 1);
 		c->path = xstrdup(host);
 		c->host_port = fwd->connect_port;
 		c->listening_addr = addr == NULL ? NULL : xstrdup(addr);
@@ -3979,10 +4036,17 @@
 	*chanids = xcalloc(num_socks + 1, sizeof(**chanids));
 	for (n = 0; n < num_socks; n++) {
 		sock = socks[n];
+		/* Is this really necassary? */
+		if (hpn_disabled)
 		nc = channel_new("x11 listener",
 		    SSH_CHANNEL_X11_LISTENER, sock, sock, -1,
 		    CHAN_X11_WINDOW_DEFAULT, CHAN_X11_PACKET_DEFAULT,
 		    0, "X11 inet listener", 1);
+		else
+			nc = channel_new("x11 listener",
+			    SSH_CHANNEL_X11_LISTENER, sock, sock, -1,
+			    hpn_buffer_size, CHAN_X11_PACKET_DEFAULT,
+			    0, "X11 inet listener", 1);
 		nc->single_connection = single_connection;
 		(*chanids)[n] = nc->self;
 	}
diff -uNr openssh-7.3p1.orig/channels.h openssh-7.3p1/channels.h
--- openssh-7.3p1.orig/channels.h	2016-07-27 15:54:27.000000000 -0700
+++ openssh-7.3p1/channels.h	2016-09-08 17:56:17.155122583 -0700
@@ -134,8 +134,10 @@
 	u_int	local_window_max;
 	u_int	local_consumed;
 	u_int	local_maxpacket;
+	int	dynamic_window;
 	int     extended_usage;
 	int	single_connection;
+	u_int	tcpwinsz;
 
 	char   *ctype;		/* type */
 
@@ -247,7 +249,7 @@
 void	 channel_prepare_select(fd_set **, fd_set **, int *, u_int*,
 	     time_t*, int);
 void     channel_after_select(fd_set *, fd_set *);
-void     channel_output_poll(void);
+int      channel_output_poll(void);
 
 int      channel_not_very_much_buffered_data(void);
 void     channel_close_all(void);
@@ -312,4 +314,7 @@
 void	 chan_write_failed(Channel *);
 void	 chan_obuf_empty(Channel *);
 
+/* hpn handler */
+void     channel_set_hpn(int, int);
+
 #endif
diff -uNr openssh-7.3p1.orig/cipher.c openssh-7.3p1/cipher.c
--- openssh-7.3p1.orig/cipher.c	2016-07-27 15:54:27.000000000 -0700
+++ openssh-7.3p1/cipher.c	2016-09-08 17:56:17.156122548 -0700
@@ -57,6 +57,13 @@
 extern int ssh1_3des_iv(EVP_CIPHER_CTX *, int, u_char *, int);
 #endif
 
+/* for multi-threaded aes-ctr cipher */
+extern const EVP_CIPHER *evp_aes_ctr_mt(void);
+
+/* no longer needed. replaced by evp pointer swap */
+/* extern void ssh_aes_ctr_thread_destroy(EVP_CIPHER_CTX *ctx); */
+/* extern void ssh_aes_ctr_thread_reconstruction(EVP_CIPHER_CTX *ctx); */
+
 struct sshcipher {
 	char	*name;
 	int	number;		/* for ssh1 only */
@@ -77,7 +84,7 @@
 #endif
 };
 
-static const struct sshcipher ciphers[] = {
+static struct sshcipher ciphers[] = {
 #ifdef WITH_SSH1
 	{ "des",	SSH_CIPHER_DES, 8, 8, 0, 0, 0, 1, EVP_des_cbc },
 	{ "3des",	SSH_CIPHER_3DES, 8, 16, 0, 0, 0, 1, evp_ssh1_3des },
@@ -156,6 +163,29 @@
 	return ret;
 }
 
+/* used to get the cipher name so when force rekeying to handle the
+ * single to multithreaded ctr cipher swap we only rekey when appropriate
+ */
+const char *
+cipher_return_name(const struct sshcipher *c)
+{
+	return c->name;
+}
+
+/* in order to get around sandbox and forking issues with a threaded cipher
+ * we set the initial pre-auth aes-ctr cipher to the default OpenSSH cipher
+ * post auth we set them to the new evp as defined by cipher-ctr-mt
+ */
+#ifdef WITH_OPENSSL
+void
+cipher_reset_multithreaded(void)
+{
+	cipher_by_name("aes128-ctr")->evptype = evp_aes_ctr_mt;
+	cipher_by_name("aes192-ctr")->evptype = evp_aes_ctr_mt;
+	cipher_by_name("aes256-ctr")->evptype = evp_aes_ctr_mt;
+}
+#endif
+
 u_int
 cipher_blocksize(const struct sshcipher *c)
 {
@@ -217,10 +247,10 @@
 	return mask;
 }
 
-const struct sshcipher *
+struct sshcipher *
 cipher_by_name(const char *name)
 {
-	const struct sshcipher *c;
+	struct sshcipher *c;
 	for (c = ciphers; c->name != NULL; c++)
 		if (strcmp(c->name, name) == 0)
 			return c;
@@ -252,7 +282,8 @@
 	for ((p = strsep(&cp, CIPHER_SEP)); p && *p != '\0';
 	    (p = strsep(&cp, CIPHER_SEP))) {
 		c = cipher_by_name(p);
-		if (c == NULL || c->number != SSH_CIPHER_SSH2) {
+		if (c == NULL || (c->number != SSH_CIPHER_SSH2 &&
+				  c->number != SSH_CIPHER_NONE)) {
 			free(cipher_list);
 			return 0;
 		}
@@ -552,6 +583,7 @@
 
 	switch (c->number) {
 #ifdef WITH_OPENSSL
+	case SSH_CIPHER_NONE:
 	case SSH_CIPHER_SSH2:
 	case SSH_CIPHER_DES:
 	case SSH_CIPHER_BLOWFISH:
@@ -600,6 +632,7 @@
 
 	switch (c->number) {
 #ifdef WITH_OPENSSL
+	case SSH_CIPHER_NONE:
 	case SSH_CIPHER_SSH2:
 	case SSH_CIPHER_DES:
 	case SSH_CIPHER_BLOWFISH:
diff -uNr openssh-7.3p1.orig/cipher-ctr-mt.c openssh-7.3p1/cipher-ctr-mt.c
--- openssh-7.3p1.orig/cipher-ctr-mt.c	1969-12-31 16:00:00.000000000 -0800
+++ openssh-7.3p1/cipher-ctr-mt.c	2016-09-08 17:56:17.155122583 -0700
@@ -0,0 +1,533 @@
+/*
+ * OpenSSH Multi-threaded AES-CTR Cipher
+ *
+ * Author: Benjamin Bennett <ben@psc.edu>
+ * Author: Mike Tasota <tasota@gmail.com>
+ * Author: Chris Rapier <rapier@psc.edu>
+ * Copyright (c) 2008-2013 Pittsburgh Supercomputing Center. All rights reserved.
+ *
+ * Based on original OpenSSH AES-CTR cipher. Small portions remain unchanged,
+ * Copyright (c) 2003 Markus Friedl <markus@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+#include "includes.h"
+
+#if defined(WITH_OPENSSL)
+#include <sys/types.h>
+
+#include <stdarg.h>
+#include <string.h>
+
+#include <openssl/evp.h>
+
+#include "xmalloc.h"
+#include "log.h"
+
+/* compatibility with old or broken OpenSSL versions */
+#include "openbsd-compat/openssl-compat.h"
+
+#ifndef USE_BUILTIN_RIJNDAEL
+#include <openssl/aes.h>
+#endif
+
+#include <pthread.h>
+
+/*-------------------- TUNABLES --------------------*/
+/* Number of pregen threads to use */
+#define CIPHER_THREADS	2
+
+/* Number of keystream queues */
+#define NUMKQ		(CIPHER_THREADS + 2)
+
+/* Length of a keystream queue */
+#define KQLEN		4096
+
+/* Processor cacheline length */
+#define CACHELINE_LEN	64
+
+/* Collect thread stats and print at cancellation when in debug mode */
+/* #define CIPHER_THREAD_STATS */
+
+/* Can the system do unaligned loads natively? */
+#if defined(__aarch64__) || \
+    defined(__i386__)    || \
+    defined(__powerpc__) || \
+    defined(__x86_64__)
+# define CIPHER_UNALIGNED_OK
+#endif
+#if defined(__SIZEOF_INT128__)
+# define CIPHER_INT128_OK
+#endif
+/*-------------------- END TUNABLES --------------------*/
+
+
+const EVP_CIPHER *evp_aes_ctr_mt(void);
+
+#ifdef CIPHER_THREAD_STATS
+/*
+ * Struct to collect thread stats
+ */
+struct thread_stats {
+	u_int	fills;
+	u_int	skips;
+	u_int	waits;
+	u_int	drains;
+};
+
+/*
+ * Debug print the thread stats
+ * Use with pthread_cleanup_push for displaying at thread cancellation
+ */
+static void
+thread_loop_stats(void *x)
+{
+	struct thread_stats *s = x;
+
+	debug("tid %lu - %u fills, %u skips, %u waits", pthread_self(),
+			s->fills, s->skips, s->waits);
+}
+
+# define STATS_STRUCT(s)	struct thread_stats s
+# define STATS_INIT(s)		{ memset(&s, 0, sizeof(s)); }
+# define STATS_FILL(s)		{ s.fills++; }
+# define STATS_SKIP(s)		{ s.skips++; }
+# define STATS_WAIT(s)		{ s.waits++; }
+# define STATS_DRAIN(s)		{ s.drains++; }
+#else
+# define STATS_STRUCT(s)
+# define STATS_INIT(s)
+# define STATS_FILL(s)
+# define STATS_SKIP(s)
+# define STATS_WAIT(s)
+# define STATS_DRAIN(s)
+#endif
+
+/* Keystream Queue state */
+enum {
+	KQINIT,
+	KQEMPTY,
+	KQFILLING,
+	KQFULL,
+	KQDRAINING
+};
+
+/* Keystream Queue struct */
+struct kq {
+	u_char		keys[KQLEN][AES_BLOCK_SIZE];
+	u_char		ctr[AES_BLOCK_SIZE];
+	u_char		pad0[CACHELINE_LEN];
+	volatile int	qstate;
+	pthread_mutex_t	lock;
+	pthread_cond_t	cond;
+	u_char		pad1[CACHELINE_LEN];
+};
+
+/* Context struct */
+struct ssh_aes_ctr_ctx
+{
+	struct kq	q[NUMKQ];
+	AES_KEY		aes_ctx;
+	STATS_STRUCT(stats);
+	u_char		aes_counter[AES_BLOCK_SIZE];
+	pthread_t	tid[CIPHER_THREADS];
+	int		state;
+	int		qidx;
+	int		ridx;
+};
+
+/* <friedl>
+ * increment counter 'ctr',
+ * the counter is of size 'len' bytes and stored in network-byte-order.
+ * (LSB at ctr[len-1], MSB at ctr[0])
+ */
+static void
+ssh_ctr_inc(u_char *ctr, size_t len)
+{
+	int i;
+
+	for (i = len - 1; i >= 0; i--)
+		if (++ctr[i])	/* continue on overflow */
+			return;
+}
+
+/*
+ * Add num to counter 'ctr'
+ */
+static void
+ssh_ctr_add(u_char *ctr, uint32_t num, u_int len)
+{
+	int i;
+	uint16_t n;
+
+	for (n = 0, i = len - 1; i >= 0 && (num || n); i--) {
+		n = ctr[i] + (num & 0xff) + n;
+		num >>= 8;
+		ctr[i] = n & 0xff;
+		n >>= 8;
+	}
+}
+
+/*
+ * Threads may be cancelled in a pthread_cond_wait, we must free the mutex
+ */
+static void
+thread_loop_cleanup(void *x)
+{
+	pthread_mutex_unlock((pthread_mutex_t *)x);
+}
+
+/*
+ * The life of a pregen thread:
+ *    Find empty keystream queues and fill them using their counter.
+ *    When done, update counter for the next fill.
+ */
+static void *
+thread_loop(void *x)
+{
+	AES_KEY key;
+	STATS_STRUCT(stats);
+	struct ssh_aes_ctr_ctx *c = x;
+	struct kq *q;
+	int i;
+	int qidx;
+
+	/* Threads stats on cancellation */
+	STATS_INIT(stats);
+#ifdef CIPHER_THREAD_STATS
+	pthread_cleanup_push(thread_loop_stats, &stats);
+#endif
+
+	/* Thread local copy of AES key */
+	memcpy(&key, &c->aes_ctx, sizeof(key));
+
+	/*
+	 * Handle the special case of startup, one thread must fill
+	 * the first KQ then mark it as draining. Lock held throughout.
+	 */
+	if (pthread_equal(pthread_self(), c->tid[0])) {
+		q = &c->q[0];
+		pthread_mutex_lock(&q->lock);
+		if (q->qstate == KQINIT) {
+			for (i = 0; i < KQLEN; i++) {
+				AES_encrypt(q->ctr, q->keys[i], &key);
+				ssh_ctr_inc(q->ctr, AES_BLOCK_SIZE);
+			}
+			ssh_ctr_add(q->ctr, KQLEN * (NUMKQ - 1), AES_BLOCK_SIZE);
+			q->qstate = KQDRAINING;
+			STATS_FILL(stats);
+			pthread_cond_broadcast(&q->cond);
+		}
+		pthread_mutex_unlock(&q->lock);
+	} else
+		STATS_SKIP(stats);
+
+	/*
+	 * Normal case is to find empty queues and fill them, skipping over
+	 * queues already filled by other threads and stopping to wait for
+	 * a draining queue to become empty.
+	 *
+	 * Multiple threads may be waiting on a draining queue and awoken
+	 * when empty.  The first thread to wake will mark it as filling,
+	 * others will move on to fill, skip, or wait on the next queue.
+	 */
+	for (qidx = 1;; qidx = (qidx + 1) % NUMKQ) {
+		/* Check if I was cancelled, also checked in cond_wait */
+		pthread_testcancel();
+
+		/* Lock queue and block if its draining */
+		q = &c->q[qidx];
+		pthread_mutex_lock(&q->lock);
+		pthread_cleanup_push(thread_loop_cleanup, &q->lock);
+		while (q->qstate == KQDRAINING || q->qstate == KQINIT) {
+			STATS_WAIT(stats);
+			pthread_cond_wait(&q->cond, &q->lock);
+		}
+		pthread_cleanup_pop(0);
+
+		/* If filling or full, somebody else got it, skip */
+		if (q->qstate != KQEMPTY) {
+			pthread_mutex_unlock(&q->lock);
+			STATS_SKIP(stats);
+			continue;
+		}
+
+		/*
+		 * Empty, let's fill it.
+		 * Queue lock is relinquished while we do this so others
+		 * can see that it's being filled.
+		 */
+		q->qstate = KQFILLING;
+		pthread_mutex_unlock(&q->lock);
+		for (i = 0; i < KQLEN; i++) {
+			AES_encrypt(q->ctr, q->keys[i], &key);
+			ssh_ctr_inc(q->ctr, AES_BLOCK_SIZE);
+		}
+
+		/* Re-lock, mark full and signal consumer */
+		pthread_mutex_lock(&q->lock);
+		ssh_ctr_add(q->ctr, KQLEN * (NUMKQ - 1), AES_BLOCK_SIZE);
+		q->qstate = KQFULL;
+		STATS_FILL(stats);
+		pthread_cond_signal(&q->cond);
+		pthread_mutex_unlock(&q->lock);
+	}
+
+#ifdef CIPHER_THREAD_STATS
+	/* Stats */
+	pthread_cleanup_pop(1);
+#endif
+
+	return NULL;
+}
+
+static int
+ssh_aes_ctr(EVP_CIPHER_CTX *ctx, u_char *dest, const u_char *src,
+    LIBCRYPTO_EVP_INL_TYPE len)
+{
+	typedef union {
+#ifdef CIPHER_INT128_OK
+		__uint128_t *u128;
+#endif
+		uint64_t *u64;
+		uint32_t *u32;
+		uint8_t *u8;
+		const uint8_t *cu8;
+		uintptr_t u;
+	} ptrs_t;
+	ptrs_t destp, srcp, bufp;
+	uintptr_t align;
+	struct ssh_aes_ctr_ctx *c;
+	struct kq *q, *oldq;
+	int ridx;
+	u_char *buf;
+
+	if (len == 0)
+		return 1;
+	if ((c = EVP_CIPHER_CTX_get_app_data(ctx)) == NULL)
+		return 0;
+
+	q = &c->q[c->qidx];
+	ridx = c->ridx;
+
+	/* src already padded to block multiple */
+	srcp.cu8 = src;
+	destp.u8 = dest;
+	while (len > 0) {
+		buf = q->keys[ridx];
+		bufp.u8 = buf;
+
+		/* figure out the alignment on the fly */
+#ifdef CIPHER_UNALIGNED_OK
+		align = 0;
+#else
+		align = destp.u | srcp.u | bufp.u;
+#endif
+
+#ifdef CIPHER_INT128_OK
+		if ((align & 0xf) == 0) {
+			destp.u128[0] = srcp.u128[0] ^ bufp.u128[0];
+		} else
+#endif
+		if ((align & 0x7) == 0) {
+			destp.u64[0] = srcp.u64[0] ^ bufp.u64[0];
+			destp.u64[1] = srcp.u64[1] ^ bufp.u64[1];
+		} else if ((align & 0x3) == 0) {
+			destp.u32[0] = srcp.u32[0] ^ bufp.u32[0];
+			destp.u32[1] = srcp.u32[1] ^ bufp.u32[1];
+			destp.u32[2] = srcp.u32[2] ^ bufp.u32[2];
+			destp.u32[3] = srcp.u32[3] ^ bufp.u32[3];
+		} else {
+			size_t i;
+			for (i = 0; i < AES_BLOCK_SIZE; ++i)
+				dest[i] = src[i] ^ buf[i];
+		}
+
+		destp.u += AES_BLOCK_SIZE;
+		srcp.u += AES_BLOCK_SIZE;
+		len -= AES_BLOCK_SIZE;
+		ssh_ctr_inc(ctx->iv, AES_BLOCK_SIZE);
+
+		/* Increment read index, switch queues on rollover */
+		if ((ridx = (ridx + 1) % KQLEN) == 0) {
+			oldq = q;
+
+			/* Mark next queue draining, may need to wait */
+			c->qidx = (c->qidx + 1) % NUMKQ;
+			q = &c->q[c->qidx];
+			pthread_mutex_lock(&q->lock);
+			while (q->qstate != KQFULL) {
+				STATS_WAIT(c->stats);
+				pthread_cond_wait(&q->cond, &q->lock);
+			}
+			q->qstate = KQDRAINING;
+			pthread_mutex_unlock(&q->lock);
+
+			/* Mark consumed queue empty and signal producers */
+			pthread_mutex_lock(&oldq->lock);
+			oldq->qstate = KQEMPTY;
+			STATS_DRAIN(c->stats);
+			pthread_cond_broadcast(&oldq->cond);
+			pthread_mutex_unlock(&oldq->lock);
+		}
+	}
+	c->ridx = ridx;
+	return 1;
+}
+
+#define HAVE_NONE       0
+#define HAVE_KEY        1
+#define HAVE_IV         2
+static int
+ssh_aes_ctr_init(EVP_CIPHER_CTX *ctx, const u_char *key, const u_char *iv,
+    int enc)
+{
+	struct ssh_aes_ctr_ctx *c;
+	int i;
+
+	if ((c = EVP_CIPHER_CTX_get_app_data(ctx)) == NULL) {
+		c = xmalloc(sizeof(*c));
+
+		c->state = HAVE_NONE;
+		for (i = 0; i < NUMKQ; i++) {
+			pthread_mutex_init(&c->q[i].lock, NULL);
+			pthread_cond_init(&c->q[i].cond, NULL);
+		}
+
+		STATS_INIT(c->stats);
+		EVP_CIPHER_CTX_set_app_data(ctx, c);
+	}
+
+	if (c->state == (HAVE_KEY | HAVE_IV)) {
+		/* Cancel pregen threads */
+		for (i = 0; i < CIPHER_THREADS; i++)
+			pthread_cancel(c->tid[i]);
+		for (i = 0; i < CIPHER_THREADS; i++)
+			pthread_join(c->tid[i], NULL);
+		/* Start over getting key & iv */
+		c->state = HAVE_NONE;
+	}
+
+	if (key != NULL) {
+		AES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
+		    &c->aes_ctx);
+		c->state |= HAVE_KEY;
+	}
+
+	if (iv != NULL) {
+		memcpy(ctx->iv, iv, AES_BLOCK_SIZE);
+		c->state |= HAVE_IV;
+	}
+
+	if (c->state == (HAVE_KEY | HAVE_IV)) {
+		/* Clear queues */
+		memcpy(c->q[0].ctr, ctx->iv, AES_BLOCK_SIZE);
+		c->q[0].qstate = KQINIT;
+		for (i = 1; i < NUMKQ; i++) {
+			memcpy(c->q[i].ctr, ctx->iv, AES_BLOCK_SIZE);
+			ssh_ctr_add(c->q[i].ctr, i * KQLEN, AES_BLOCK_SIZE);
+			c->q[i].qstate = KQEMPTY;
+		}
+		c->qidx = 0;
+		c->ridx = 0;
+
+		/* Start threads */
+		for (i = 0; i < CIPHER_THREADS; i++) {
+			debug("spawned a thread");
+			pthread_create(&c->tid[i], NULL, thread_loop, c);
+		}
+		pthread_mutex_lock(&c->q[0].lock);
+		while (c->q[0].qstate != KQDRAINING)
+			pthread_cond_wait(&c->q[0].cond, &c->q[0].lock);
+		pthread_mutex_unlock(&c->q[0].lock);
+	}
+	return 1;
+}
+
+/* this function is no longer used but might prove handy in the future
+ * this comment also applies to ssh_aes_ctr_thread_reconstruction
+ */
+void
+ssh_aes_ctr_thread_destroy(EVP_CIPHER_CTX *ctx)
+{
+	struct ssh_aes_ctr_ctx *c;
+	int i;
+	c = EVP_CIPHER_CTX_get_app_data(ctx);
+	/* destroy threads */
+	for (i = 0; i < CIPHER_THREADS; i++) {
+		pthread_cancel(c->tid[i]);
+	}
+	for (i = 0; i < CIPHER_THREADS; i++) {
+		pthread_join(c->tid[i], NULL);
+	}
+}
+
+void
+ssh_aes_ctr_thread_reconstruction(EVP_CIPHER_CTX *ctx)
+{
+	struct ssh_aes_ctr_ctx *c;
+	int i;
+	c = EVP_CIPHER_CTX_get_app_data(ctx);
+	/* reconstruct threads */
+	for (i = 0; i < CIPHER_THREADS; i++) {
+		debug("spawned a thread");
+		pthread_create(&c->tid[i], NULL, thread_loop, c);
+	}
+}
+
+static int
+ssh_aes_ctr_cleanup(EVP_CIPHER_CTX *ctx)
+{
+	struct ssh_aes_ctr_ctx *c;
+	int i;
+
+	if ((c = EVP_CIPHER_CTX_get_app_data(ctx)) != NULL) {
+#ifdef CIPHER_THREAD_STATS
+		debug("main thread: %u drains, %u waits", c->stats.drains,
+				c->stats.waits);
+#endif
+		/* Cancel pregen threads */
+		for (i = 0; i < CIPHER_THREADS; i++)
+			pthread_cancel(c->tid[i]);
+		for (i = 0; i < CIPHER_THREADS; i++)
+			pthread_join(c->tid[i], NULL);
+
+		memset(c, 0, sizeof(*c));
+		free(c);
+		EVP_CIPHER_CTX_set_app_data(ctx, NULL);
+	}
+	return 1;
+}
+
+/* <friedl> */
+const EVP_CIPHER *
+evp_aes_ctr_mt(void)
+{
+	static EVP_CIPHER aes_ctr;
+
+	memset(&aes_ctr, 0, sizeof(EVP_CIPHER));
+	aes_ctr.nid = NID_undef;
+	aes_ctr.block_size = AES_BLOCK_SIZE;
+	aes_ctr.iv_len = AES_BLOCK_SIZE;
+	aes_ctr.key_len = 16;
+	aes_ctr.init = ssh_aes_ctr_init;
+	aes_ctr.cleanup = ssh_aes_ctr_cleanup;
+	aes_ctr.do_cipher = ssh_aes_ctr;
+#ifndef SSH_OLD_EVP
+	aes_ctr.flags = EVP_CIPH_CBC_MODE | EVP_CIPH_VARIABLE_LENGTH |
+	    EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CUSTOM_IV;
+#endif
+	return &aes_ctr;
+}
+
+#endif /* defined(WITH_OPENSSL) */
diff -uNr openssh-7.3p1.orig/cipher.h openssh-7.3p1/cipher.h
--- openssh-7.3p1.orig/cipher.h	2016-07-27 15:54:27.000000000 -0700
+++ openssh-7.3p1/cipher.h	2016-09-08 17:56:17.156122548 -0700
@@ -72,8 +72,11 @@
 	const struct sshcipher *cipher;
 };
 
+void ssh_aes_ctr_thread_destroy(EVP_CIPHER_CTX *ctx); // defined in cipher-ctr-mt.c
+void ssh_aes_ctr_thread_reconstruction(EVP_CIPHER_CTX *ctx);
+
 u_int	 cipher_mask_ssh1(int);
-const struct sshcipher *cipher_by_name(const char *);
+struct sshcipher *cipher_by_name(const char *);
 const struct sshcipher *cipher_by_number(int);
 int	 cipher_number(const char *);
 char	*cipher_name(int);
@@ -95,6 +98,8 @@
 u_int	 cipher_authlen(const struct sshcipher *);
 u_int	 cipher_ivlen(const struct sshcipher *);
 u_int	 cipher_is_cbc(const struct sshcipher *);
+void	 cipher_reset_multithreaded(void);
+const char *cipher_return_name(const struct sshcipher *);
 
 u_int	 cipher_get_number(const struct sshcipher *);
 int	 cipher_get_keyiv(struct sshcipher_ctx *, u_char *, u_int);
diff -uNr openssh-7.3p1.orig/clientloop.c openssh-7.3p1/clientloop.c
--- openssh-7.3p1.orig/clientloop.c	2016-07-27 15:54:27.000000000 -0700
+++ openssh-7.3p1/clientloop.c	2016-09-08 17:56:17.157122513 -0700
@@ -1964,9 +1964,15 @@
 	sock = x11_connect_display();
 	if (sock < 0)
 		return NULL;
+	/* again is this really necessary for X11? */
+	if (options.hpn_disabled)
 	c = channel_new("x11",
 	    SSH_CHANNEL_X11_OPEN, sock, sock, -1,
 	    CHAN_TCP_WINDOW_DEFAULT, CHAN_X11_PACKET_DEFAULT, 0, "x11", 1);
+	else
+		c = channel_new("x11",
+		    SSH_CHANNEL_X11_OPEN, sock, sock, -1,
+		    options.hpn_buffer_size, CHAN_X11_PACKET_DEFAULT, 0, "x11", 1);
 	c->force_drain = 1;
 	return c;
 }
@@ -1989,9 +1995,15 @@
 			    __func__, ssh_err(r));
 		return NULL;
 	}
+	if (options.hpn_disabled)
 	c = channel_new("authentication agent connection",
 	    SSH_CHANNEL_OPEN, sock, sock, -1,
-	    CHAN_X11_WINDOW_DEFAULT, CHAN_TCP_PACKET_DEFAULT, 0,
+		    CHAN_X11_WINDOW_DEFAULT, CHAN_TCP_PACKET_DEFAULT, 0,
+		    "authentication agent connection", 1);
+	else
+	c = channel_new("authentication agent connection",
+	    SSH_CHANNEL_OPEN, sock, sock, -1,
+	    options.hpn_buffer_size, CHAN_TCP_PACKET_DEFAULT, 0,
 	    "authentication agent connection", 1);
 	c->force_drain = 1;
 	return c;
@@ -2019,10 +2031,18 @@
 		return -1;
 	}
 
+	if(options.hpn_disabled)
+	c = channel_new("tun", SSH_CHANNEL_OPENING, fd, fd, -1,
+				CHAN_TCP_WINDOW_DEFAULT, CHAN_TCP_PACKET_DEFAULT,
+				0, "tun", 1);
+	else
 	c = channel_new("tun", SSH_CHANNEL_OPENING, fd, fd, -1,
-	    CHAN_TCP_WINDOW_DEFAULT, CHAN_TCP_PACKET_DEFAULT, 0, "tun", 1);
+				options.hpn_buffer_size, CHAN_TCP_PACKET_DEFAULT,
+				0, "tun", 1);
 	c->datagram = 1;
 
+
+
 #if defined(SSH_TUN_FILTER)
 	if (options.tun_open == SSH_TUNMODE_POINTOPOINT)
 		channel_register_filter(c->self, sys_tun_infilter,
diff -uNr openssh-7.3p1.orig/compat.c openssh-7.3p1/compat.c
--- openssh-7.3p1.orig/compat.c	2016-07-27 15:54:27.000000000 -0700
+++ openssh-7.3p1/compat.c	2016-09-08 17:56:17.157122513 -0700
@@ -210,6 +210,13 @@
 			debug("match: %s pat %s compat 0x%08x",
 			    version, check[i].pat, check[i].bugs);
 			datafellows = check[i].bugs;	/* XXX for now */
+			/* Check to see if the remote side is OpenSSH and not HPN */
+			if (strstr(version, "OpenSSH") != NULL) {
+				if (strstr(version, "hpn") == NULL) {
+					datafellows |= SSH_BUG_LARGEWINDOW;
+					debug("Remote is NON-HPN aware");
+				}
+			}
 			return check[i].bugs;
 		}
 	}
diff -uNr openssh-7.3p1.orig/compat.h openssh-7.3p1/compat.h
--- openssh-7.3p1.orig/compat.h	2016-07-27 15:54:27.000000000 -0700
+++ openssh-7.3p1/compat.h	2016-09-08 17:56:17.157122513 -0700
@@ -62,6 +62,7 @@
 #define SSH_BUG_CURVE25519PAD	0x10000000
 #define SSH_BUG_HOSTKEYS	0x20000000
 #define SSH_BUG_DHGEX_LARGE	0x40000000
+#define SSH_BUG_LARGEWINDOW	0x80000000
 
 void     enable_compat13(void);
 void     enable_compat20(void);
diff -uNr openssh-7.3p1.orig/HPN-README openssh-7.3p1/HPN-README
--- openssh-7.3p1.orig/HPN-README	1969-12-31 16:00:00.000000000 -0800
+++ openssh-7.3p1/HPN-README	2016-09-08 17:56:17.153122653 -0700
@@ -0,0 +1,130 @@
+Notes:
+
+MULTI-THREADED CIPHER:
+The AES cipher in CTR mode has been multithreaded (MTR-AES-CTR). This will allow ssh installations
+on hosts with multiple cores to use more than one processing core during encryption.
+Tests have show significant throughput performance increases when using MTR-AES-CTR up
+to and including a full gigabit per second on quad core systems. It should be possible to
+achieve full line rate on dual core systems but OS and data management overhead makes this
+more difficult to achieve. The cipher stream from MTR-AES-CTR is entirely compatible with single
+thread AES-CTR (ST-AES-CTR) implementations and should be 100% backward compatible. Optimal
+performance requires the MTR-AES-CTR mode be enabled on both ends of the connection.
+The MTR-AES-CTR replaces ST-AES-CTR and is used in exactly the same way with the same
+nomenclature.
+Use examples:
+		ssh -caes128-ctr you@host.com
+		scp -oCipher=aes256-ctr file you@host.com:~/file
+
+NONE CIPHER:
+To use the NONE option you must have the NoneEnabled switch set on the server and
+you *must* have *both* NoneEnabled and NoneSwitch set to yes on the client. The NONE
+feature works with ALL ssh subsystems (as far as we can tell) *AS LONG AS* a tty is not
+spawned. If a user uses the -T switch to prevent a tty being created the NONE cipher will
+be disabled.
+
+The performance increase will only be as good as the network and TCP stack tuning
+on the reciever side of the connection allows. As a rule of thumb a user will need
+at least 10Mb/s connection with a 100ms RTT to see a doubling of performance. The
+HPN-SSH home page describes this in greater detail.
+
+http://www.psc.edu/networking/projects/hpn-ssh
+
+BUFFER SIZES:
+
+If HPN is disabled the receive buffer size will be set to the
+OpenSSH default of 64K.
+
+If an HPN system connects to a nonHPN system the receive buffer will
+be set to the HPNBufferSize value. The default is 2MB but user adjustable.
+
+If an HPN to HPN connection is established a number of different things might
+happen based on the user options and conditions.
+
+Conditions: HPNBufferSize NOT Set, TCPRcvBufPoll enabled, TCPRcvBuf NOT Set
+HPN Buffer Size = up to 64MB
+This is the default state. The HPN buffer size will grow to a maximum of 64MB
+as the TCP receive buffer grows. The maximum HPN Buffer size of 64MB is
+geared towards 10GigE transcontinental connections.
+
+Conditions: HPNBufferSize NOT Set, TCPRcvBufPoll disabled, TCPRcvBuf NOT Set
+HPN Buffer Size = TCP receive buffer value.
+Users on non-autotuning systesm should disable TCPRcvBufPoll in the
+ssh_cofig and sshd_config
+
+Conditions: HPNBufferSize SET, TCPRcvBufPoll disabled, TCPRcvBuf NOT Set
+HPN Buffer Size = minmum of TCP receive buffer and HPNBufferSize.
+This would be the system defined TCP receive buffer (RWIN).
+
+Conditions: HPNBufferSize SET, TCPRcvBufPoll disabled, TCPRcvBuf SET
+HPN Buffer Size = minmum of TCPRcvBuf and HPNBufferSize.
+Generally there is no need to set both.
+
+Conditions: HPNBufferSize SET, TCPRcvBufPoll enabled, TCPRcvBuf NOT Set
+HPN Buffer Size = grows to HPNBufferSize
+The buffer will grow up to the maximum size specified here.
+
+Conditions: HPNBufferSize SET, TCPRcvBufPoll enabled, TCPRcvBuf SET
+HPN Buffer Size = minmum of TCPRcvBuf and HPNBufferSize.
+Generally there is no need to set both of these, especially on autotuning
+systems. However, if the users wishes to override the autotuning this would be
+one way to do it.
+
+Conditions: HPNBufferSize NOT Set, TCPRcvBufPoll enabled, TCPRcvBuf SET
+HPN Buffer Size = TCPRcvBuf.
+This will override autotuning and set the TCP recieve buffer to the user defined
+value.
+
+
+HPN Specific Configuration options
+
+TcpRcvBuf=[int]KB client
+      set the TCP socket receive buffer to n Kilobytes. It can be set up to the
+maximum socket size allowed by the system. This is useful in situations where
+the tcp receive window is set low but the maximum buffer size is set
+higher (as is typical). This works on a per TCP connection basis. You can also
+use this to artifically limit the transfer rate of the connection. In these
+cases the throughput will be no more than n/RTT. The minimum buffer size is 1KB.
+Default is the current system wide tcp receive buffer size.
+
+TcpRcvBufPoll=[yes/no] client/server
+      enable of disable the polling of the tcp receive buffer through the life
+of the connection. You would want to make sure that this option is enabled
+for systems making use of autotuning kernels (linux 2.4.24+, 2.6, MS Vista)
+default is yes.
+
+NoneEnabled=[yes/no] client/server
+      enable or disable the use of the None cipher. Care must always be used
+when enabling this as it will allow users to send data in the clear. However,
+it is important to note that authentication information remains encrypted
+even if this option is enabled. Set to no by default.
+
+NoneSwitch=[yes/no] client
+     Switch the encryption cipher being used to the None cipher after
+authentication takes place. NoneEnabled must be enabled on both the client
+and server side of the connection. When the connection switches to the NONE
+cipher a warning is sent to STDERR. The connection attempt will fail with an
+error if a client requests a NoneSwitch from the server that does not explicitly
+have NoneEnabled set to yes. Note: The NONE cipher cannot be used in
+interactive (shell) sessions and it will fail silently. Set to no by default.
+
+HPNDisabled=[yes/no] client/server
+     In some situations, such as transfers on a local area network, the impact
+of the HPN code produces a net decrease in performance. In these cases it is
+helpful to disable the HPN functionality. By default HPNDisabled is set to no.
+
+HPNBufferSize=[int]KB client/server
+     This is the default buffer size the HPN functionality uses when interacting
+with nonHPN SSH installations. Conceptually this is similar to the TcpRcvBuf
+option as applied to the internal SSH flow control. This value can range from
+1KB to 64MB (1-65536). Use of oversized or undersized buffers can cause performance
+problems depending on the length of the network path. The default size of this buffer
+is 2MB.
+
+
+Credits: This patch was conceived, designed, and led by Chris Rapier (rapier@psc.edu)
+         The majority of the actual coding for versions up to HPN12v1 was performed
+         by Michael Stevens (mstevens@andrew.cmu.edu). The MT-AES-CTR cipher was
+         implemented by Ben Bennet (ben@psc.edu) and improved by Mike Tasota
+         (tasota@gmail.com) an NSF REU grant recipient for 2013.
+         This work was financed, in part, by Cisco System, Inc., the National
+         Library of Medicine, and the National Science Foundation.
diff -uNr openssh-7.3p1.orig/kex.c openssh-7.3p1/kex.c
--- openssh-7.3p1.orig/kex.c	2016-07-27 15:54:27.000000000 -0700
+++ openssh-7.3p1/kex.c	2016-09-08 17:56:17.157122513 -0700
@@ -53,6 +53,7 @@
 
 #include "ssherr.h"
 #include "sshbuf.h"
+#include "packet.h"
 #include "digest.h"
 
 #if OPENSSL_VERSION_NUMBER >= 0x00907000L
@@ -754,6 +755,11 @@
 	int nenc, nmac, ncomp;
 	u_int mode, ctos, need, dh_need, authlen;
 	int r, first_kex_follows;
+	int log_flag = 0;
+	int auth_flag;
+
+	auth_flag = packet_authentication_state(ssh);
+	debug("AUTH STATE IS %d", auth_flag);
 
 	debug2("local %s KEXINIT proposal", kex->server ? "server" : "client");
 	if ((r = kex_buf2prop(kex->my, NULL, &my)) != 0)
@@ -826,11 +832,35 @@
 			peer[ncomp] = NULL;
 			goto out;
 		}
+		debug("REQUESTED ENC.NAME is '%s'", newkeys->enc.name);
+		if (strcmp(newkeys->enc.name, "none") == 0) {
+			debug("Requesting NONE. Authflag is %d", auth_flag);
+			if (auth_flag == 1)
+				debug("None requested post authentication.");
+			else
+				fatal("Pre-authentication none cipher requests are not allowed.");
+		}
 		debug("kex: %s cipher: %s MAC: %s compression: %s",
 		    ctos ? "client->server" : "server->client",
 		    newkeys->enc.name,
 		    authlen == 0 ? newkeys->mac.name : "<implicit>",
 		    newkeys->comp.name);
+		/*
+		 * client starts with ctos = 0 && log flag = 0 and no log.
+		 * 2nd client pass ctos = 1 and flag = 1 so no log.
+		 * server starts with ctos = 1 && log_flag = 0 so log.
+		 * 2nd sever pass ctos = 1 && log flag = 1 so no log.
+		 * -cjr
+		 */
+		if (ctos && !log_flag) {
+			logit("SSH: Server;Ltype: Kex;Remote: %s-%d;Enc: %s;MAC: %s;Comp: %s",
+			    ssh_remote_ipaddr(ssh),
+			    ssh_remote_port(ssh),
+			    newkeys->enc.name,
+			    authlen == 0 ? newkeys->mac.name : "<implicit>",
+			    newkeys->comp.name);
+		}
+		log_flag = 1;
 	}
 	need = dh_need = 0;
 	for (mode = 0; mode < MODE_MAX; mode++) {
diff -uNr openssh-7.3p1.orig/Makefile.in openssh-7.3p1/Makefile.in
--- openssh-7.3p1.orig/Makefile.in	2016-07-27 15:54:27.000000000 -0700
+++ openssh-7.3p1/Makefile.in	2016-09-08 17:56:17.153122653 -0700
@@ -44,7 +44,7 @@
 LD=@LD@
 CFLAGS=@CFLAGS@
 CPPFLAGS=-I. -I$(srcdir) @CPPFLAGS@ $(PATHS) @DEFS@
-LIBS=@LIBS@
+LIBS=@LIBS@ -lpthread
 K5LIBS=@K5LIBS@
 GSSLIBS=@GSSLIBS@
 SSHLIBS=@SSHLIBS@
@@ -78,7 +78,7 @@
 LIBSSH_OBJS=${LIBOPENSSH_OBJS} \
 	authfd.o authfile.o bufaux.o bufbn.o bufec.o buffer.o \
 	canohost.o channels.o cipher.o cipher-aes.o cipher-aesctr.o \
-	cipher-bf1.o cipher-ctr.o cipher-3des1.o cleanup.o \
+	cipher-bf1.o cipher-ctr.o cipher-ctr-mt.o cipher-3des1.o cleanup.o \
 	compat.o crc32.o deattack.o fatal.o hostfile.o \
 	log.o match.o md-sha256.o moduli.o nchan.o packet.o opacket.o \
 	readpass.o rsa.o ttymodes.o xmalloc.o addrmatch.o \
diff -uNr openssh-7.3p1.orig/opacket.c openssh-7.3p1/opacket.c
--- openssh-7.3p1.orig/opacket.c	2016-07-27 15:54:27.000000000 -0700
+++ openssh-7.3p1/opacket.c	2016-09-08 17:56:17.157122513 -0700
@@ -108,13 +108,15 @@
 # endif
 #endif /* WITH_OPENSSL */
 
-void
+int
 ssh_packet_send(struct ssh *ssh)
 {
 	int r;
 
 	if ((r = sshpkt_send(ssh)) != 0)
 		fatal("%s: %s", __func__, ssh_err(r));
+
+	return r;
 }
 
 u_int
@@ -294,13 +296,15 @@
 		sshpkt_fatal(active_state, __func__, r);
 }
 
-void
+int
 packet_write_poll(void)
 {
 	int r;
 
 	if ((r = ssh_packet_write_poll(active_state)) != 0)
 		sshpkt_fatal(active_state, __func__, r);
+
+	return r;
 }
 
 void
diff -uNr openssh-7.3p1.orig/opacket.h openssh-7.3p1/opacket.h
--- openssh-7.3p1.orig/opacket.h	2016-07-27 15:54:27.000000000 -0700
+++ openssh-7.3p1/opacket.h	2016-09-08 17:56:17.157122513 -0700
@@ -12,7 +12,7 @@
 void     ssh_packet_put_string(struct ssh *, const void *buf, u_int len);
 void     ssh_packet_put_cstring(struct ssh *, const char *str);
 void     ssh_packet_put_raw(struct ssh *, const void *buf, u_int len);
-void     ssh_packet_send(struct ssh *);
+int      ssh_packet_send(struct ssh *);
 
 u_int	 ssh_packet_get_char(struct ssh *);
 u_int	 ssh_packet_get_int(struct ssh *);
@@ -44,7 +44,7 @@
 int	 packet_read_poll_seqnr(u_int32_t *);
 void	 packet_process_incoming(const char *buf, u_int len);
 void	 packet_write_wait(void);
-void	 packet_write_poll(void);
+int	 packet_write_poll(void);
 void	 packet_read_expect(int expected_type);
 #define packet_set_timeout(timeout, count) \
 	ssh_packet_set_timeout(active_state, (timeout), (count))
diff -uNr openssh-7.3p1.orig/packet.c openssh-7.3p1/packet.c
--- openssh-7.3p1.orig/packet.c	2016-07-27 15:54:27.000000000 -0700
+++ openssh-7.3p1/packet.c	2016-09-08 17:56:17.158122478 -0700
@@ -277,7 +277,7 @@
 ssh_packet_set_connection(struct ssh *ssh, int fd_in, int fd_out)
 {
 	struct session_state *state;
-	const struct sshcipher *none = cipher_by_name("none");
+	struct sshcipher *none = cipher_by_name("none");
 	int r;
 
 	if (none == NULL) {
@@ -1074,6 +1074,24 @@
 	return 0;
 }
 
+/* this supports the forced rekeying required for the NONE cipher */
+int rekey_requested = 0;
+void
+packet_request_rekeying(void)
+{
+	rekey_requested = 1;
+}
+
+/* this determines if authentciation has happened as of yet. Needed for
+ * NONE cipher switching. */
+int
+packet_authentication_state(const struct ssh *ssh)
+{
+	struct session_state *state = ssh->state;
+
+	return state->after_authentication;
+}
+
 #define MAX_PACKETS	(1U<<31)
 static int
 ssh_packet_need_rekeying(struct ssh *ssh, u_int outbound_packet_len)
@@ -1100,6 +1118,13 @@
 	if (state->p_send.packets == 0 && state->p_read.packets == 0)
 		return 0;
 
+	/* used to force rekeying when called for by the none
+	 * cipher switch methods -cjr */
+	if (rekey_requested == 1) {
+		rekey_requested = 0;
+		return 1;
+	}
+
 	/* Time-based rekeying */
 	if (state->rekey_interval != 0 &&
 	    state->rekey_time + state->rekey_interval <= monotime())
@@ -3014,3 +3039,10 @@
 	ssh->state->extra_pad = pad;
 	return 0;
 }
+
+/* need this for the moment for the aes-ctr cipher */
+void *
+ssh_packet_get_send_context(struct ssh *ssh)
+{
+	return (void *)&ssh->state->send_context;
+}
diff -uNr openssh-7.3p1.orig/packet.h openssh-7.3p1/packet.h
--- openssh-7.3p1.orig/packet.h	2016-07-27 15:54:27.000000000 -0700
+++ openssh-7.3p1/packet.h	2016-09-08 17:56:17.158122478 -0700
@@ -142,6 +142,10 @@
 int	 ssh_packet_set_maxsize(struct ssh *, u_int);
 u_int	 ssh_packet_get_maxsize(struct ssh *);
 
+/* for forced packet rekeying post auth */
+void	 packet_request_rekeying(void);
+int	 packet_authentication_state(const struct ssh *);
+
 int	 ssh_packet_get_state(struct ssh *, struct sshbuf *);
 int	 ssh_packet_set_state(struct ssh *, struct sshbuf *);
 
@@ -155,6 +159,8 @@
 
 void	*ssh_packet_get_input(struct ssh *);
 void	*ssh_packet_get_output(struct ssh *);
+void	*ssh_packet_get_receive_context(struct ssh *);
+void	*ssh_packet_get_send_context(struct ssh *);
 
 /* new API */
 int	sshpkt_start(struct ssh *ssh, u_char type);
diff -uNr openssh-7.3p1.orig/progressmeter.c openssh-7.3p1/progressmeter.c
--- openssh-7.3p1.orig/progressmeter.c	2016-07-27 15:54:27.000000000 -0700
+++ openssh-7.3p1/progressmeter.c	2016-09-08 17:56:17.159122443 -0700
@@ -69,6 +69,8 @@
 static off_t start_pos;		/* initial position of transfer */
 static off_t end_pos;		/* ending position of transfer */
 static off_t cur_pos;		/* transfer position as of last refresh */
+static off_t last_pos;
+static off_t max_delta_pos = 0;
 static volatile off_t *counter;	/* progress counter */
 static long stalled;		/* how long we have been stalled */
 static int bytes_per_second;	/* current speed in bytes per second */
@@ -128,12 +130,17 @@
 	int hours, minutes, seconds;
 	int i, len;
 	int file_len;
+	off_t delta_pos;
 
 	transferred = *counter - (cur_pos ? cur_pos : start_pos);
 	cur_pos = *counter;
 	now = monotime_double();
 	bytes_left = end_pos - cur_pos;
 
+	delta_pos = cur_pos - last_pos;
+	if (delta_pos > max_delta_pos)
+		max_delta_pos = delta_pos;
+
 	if (bytes_left > 0)
 		elapsed = now - last_update;
 	else {
@@ -158,7 +165,7 @@
 
 	/* filename */
 	buf[0] = '\0';
-	file_len = win_size - 35;
+	file_len = win_size - 45;
 	if (file_len > 0) {
 		len = snprintf(buf, file_len + 1, "\r%s", file);
 		if (len < 0)
@@ -188,6 +195,15 @@
 	    (off_t)bytes_per_second);
 	strlcat(buf, "/s ", win_size);
 
+	/* instantaneous rate */
+	if (bytes_left > 0)
+		format_rate(buf + strlen(buf), win_size - strlen(buf),
+			    delta_pos);
+	else
+		format_rate(buf + strlen(buf), win_size - strlen(buf),
+			    max_delta_pos);
+	strlcat(buf, "/s ", win_size);
+
 	/* ETA */
 	if (!transferred)
 		stalled += elapsed;
@@ -224,6 +240,7 @@
 
 	atomicio(vwrite, STDOUT_FILENO, buf, win_size - 1);
 	last_update = now;
+	last_pos = cur_pos;
 }
 
 /*ARGSUSED*/
diff -uNr openssh-7.3p1.orig/readconf.c openssh-7.3p1/readconf.c
--- openssh-7.3p1.orig/readconf.c	2016-07-27 15:54:27.000000000 -0700
+++ openssh-7.3p1/readconf.c	2016-09-08 17:56:17.160122408 -0700
@@ -66,6 +66,7 @@
 #include "uidswap.h"
 #include "myproposal.h"
 #include "digest.h"
+#include "sshbuf.h"
 
 /* Format of the configuration file:
 
@@ -164,6 +165,8 @@
 	oSendEnv, oControlPath, oControlMaster, oControlPersist,
 	oHashKnownHosts,
 	oTunnel, oTunnelDevice, oLocalCommand, oPermitLocalCommand,
+	oNoneEnabled, oNoneSwitch,
+	oTcpRcvBufPoll, oTcpRcvBuf, oHPNDisabled, oHPNBufferSize,
 	oVisualHostKey,
 	oKexAlgorithms, oIPQoS, oRequestTTY, oIgnoreUnknown, oProxyUseFdpass,
 	oCanonicalDomains, oCanonicalizeHostname, oCanonicalizeMaxDots,
@@ -281,6 +284,8 @@
 	{ "kexalgorithms", oKexAlgorithms },
 	{ "ipqos", oIPQoS },
 	{ "requesttty", oRequestTTY },
+	{ "noneenabled", oNoneEnabled },
+	{ "noneswitch", oNoneSwitch },
 	{ "proxyusefdpass", oProxyUseFdpass },
 	{ "canonicaldomains", oCanonicalDomains },
 	{ "canonicalizefallbacklocal", oCanonicalizeFallbackLocal },
@@ -297,6 +302,11 @@
 	{ "ignoreunknown", oIgnoreUnknown },
 	{ "proxyjump", oProxyJump },
 
+	{ "tcprcvbufpoll", oTcpRcvBufPoll },
+	{ "tcprcvbuf", oTcpRcvBuf },
+	{ "hpndisabled", oHPNDisabled },
+	{ "hpnbuffersize", oHPNBufferSize },
+
 	{ NULL, oBadOption }
 };
 
@@ -974,6 +984,38 @@
 		intptr = &options->check_host_ip;
 		goto parse_flag;
 
+	case oNoneEnabled:
+		intptr = &options->none_enabled;
+		goto parse_flag;
+
+	/*
+	 * We check to see if the command comes from the command
+	 * line or not. If it does then enable it otherwise fail.
+	 *  NONE should never be a default configuration.
+	 */
+	case oNoneSwitch:
+		if (strcmp(filename, "command-line") == 0) {
+			intptr = &options->none_switch;
+			goto parse_flag;
+		} else {
+			error("NoneSwitch is found in %.200s.\nYou may only use this configuration option from the command line", filename);
+			error("Continuing...");
+			debug("NoneSwitch directive found in %.200s.", filename);
+			return 0;
+		}
+
+	case oHPNDisabled:
+		intptr = &options->hpn_disabled;
+		goto parse_flag;
+
+	case oHPNBufferSize:
+		intptr = &options->hpn_buffer_size;
+		goto parse_int;
+
+	case oTcpRcvBufPoll:
+		intptr = &options->tcp_rcv_buf_poll;
+		goto parse_flag;
+
 	case oVerifyHostKeyDNS:
 		intptr = &options->verify_host_key_dns;
 		multistate_ptr = multistate_yesnoask;
@@ -1166,6 +1208,10 @@
 		intptr = &options->connection_attempts;
 		goto parse_int;
 
+	case oTcpRcvBuf:
+		intptr = &options->tcp_rcv_buf;
+		goto parse_int;
+
 	case oCipher:
 		intptr = &options->cipher;
 		arg = strdelim(&s);
@@ -1846,6 +1892,12 @@
 	options->ip_qos_interactive = -1;
 	options->ip_qos_bulk = -1;
 	options->request_tty = -1;
+	options->none_switch = -1;
+	options->none_enabled = -1;
+	options->hpn_disabled = -1;
+	options->hpn_buffer_size = -1;
+	options->tcp_rcv_buf_poll = -1;
+	options->tcp_rcv_buf = -1;
 	options->proxy_use_fdpass = -1;
 	options->ignored_unknown = NULL;
 	options->num_canonical_domains = 0;
@@ -2009,6 +2061,30 @@
 		options->server_alive_interval = 0;
 	if (options->server_alive_count_max == -1)
 		options->server_alive_count_max = 3;
+	if (options->none_switch == -1)
+		options->none_switch = 0;
+	if (options->none_enabled == -1)
+		options->none_enabled = 0;
+	if (options->hpn_disabled == -1)
+		options->hpn_disabled = 0;
+	if (options->hpn_buffer_size > -1) {
+		/* if a user tries to set the size to 0 set it to 1KB */
+		if (options->hpn_buffer_size == 0)
+			options->hpn_buffer_size = 1;
+		/* limit the buffer to SSHBUF_SIZE_MAX (currently 256MB) */
+		if (options->hpn_buffer_size > (SSHBUF_SIZE_MAX / 1024)) {
+			options->hpn_buffer_size = SSHBUF_SIZE_MAX;
+			debug("User requested buffer larger than 256MB. Request reverted to 256MB");
+		} else
+			options->hpn_buffer_size *= 1024;
+		debug("hpn_buffer_size set to %d", options->hpn_buffer_size);
+	}
+	if (options->tcp_rcv_buf == 0)
+		options->tcp_rcv_buf = 1;
+	if (options->tcp_rcv_buf > -1)
+		options->tcp_rcv_buf *=1024;
+	if (options->tcp_rcv_buf_poll == -1)
+		options->tcp_rcv_buf_poll = 1;
 	if (options->control_master == -1)
 		options->control_master = 0;
 	if (options->control_persist == -1) {
diff -uNr openssh-7.3p1.orig/readconf.h openssh-7.3p1/readconf.h
--- openssh-7.3p1.orig/readconf.h	2016-07-27 15:54:27.000000000 -0700
+++ openssh-7.3p1/readconf.h	2016-09-08 17:56:17.160122408 -0700
@@ -57,6 +57,10 @@
 	int     compression_level;	/* Compression level 1 (fast) to 9
 					 * (best). */
 	int     tcp_keep_alive;	/* Set SO_KEEPALIVE. */
+	int     tcp_rcv_buf; /* user switch to set tcp recv buffer */
+	int     tcp_rcv_buf_poll; /* Option to poll recv buf every window transfer */
+	int     hpn_disabled;    /* Switch to disable HPN buffer management */
+	int     hpn_buffer_size; /* User definable size for HPN buffer window */
 	int	ip_qos_interactive;	/* IP ToS/DSCP/class for interactive */
 	int	ip_qos_bulk;		/* IP ToS/DSCP/class for bulk traffic */
 	LogLevel log_level;	/* Level for logging. */
@@ -118,7 +122,10 @@
 
 	int	enable_ssh_keysign;
 	int64_t rekey_limit;
+	int     none_switch;    /* Use none cipher */
+	int     none_enabled;   /* Allow none to be used */
 	int	rekey_interval;
+
 	int	no_host_authentication_for_localhost;
 	int	identities_only;
 	int	server_alive_interval;
diff -uNr openssh-7.3p1.orig/sandbox-seccomp-filter.c openssh-7.3p1/sandbox-seccomp-filter.c
--- openssh-7.3p1.orig/sandbox-seccomp-filter.c	2016-07-27 15:54:27.000000000 -0700
+++ openssh-7.3p1/sandbox-seccomp-filter.c	2016-09-08 17:56:17.160122408 -0700
@@ -147,6 +147,9 @@
 #ifdef __NR_exit_group
 	SC_ALLOW(exit_group),
 #endif
+#ifdef __NR_getpeername /* not defined on archs that go via socketcall(2) */
+	SC_ALLOW(getpeername),
+#endif
 #ifdef __NR_getpgid
 	SC_ALLOW(getpgid),
 #endif
@@ -198,6 +201,9 @@
 #ifdef __NR_sigprocmask
 	SC_ALLOW(sigprocmask),
 #endif
+#ifdef __NR_socketcall
+	SC_ALLOW(socketcall),
+#endif
 #ifdef __NR_time
 	SC_ALLOW(time),
 #endif
diff -uNr openssh-7.3p1.orig/scp.c openssh-7.3p1/scp.c
--- openssh-7.3p1.orig/scp.c	2016-07-27 15:54:27.000000000 -0700
+++ openssh-7.3p1/scp.c	2016-09-08 17:56:17.160122408 -0700
@@ -764,7 +764,7 @@
 	off_t i, statbytes;
 	size_t amt, nr;
 	int fd = -1, haderr, indx;
-	char *last, *name, buf[2048], encname[PATH_MAX];
+	char *last, *name, buf[16384], encname[PATH_MAX];
 	int len;
 
 	for (indx = 0; indx < argc; ++indx) {
@@ -932,7 +932,7 @@
 	off_t size, statbytes;
 	unsigned long long ull;
 	int setimes, targisdir, wrerrno = 0;
-	char ch, *cp, *np, *targ, *why, *vect[1], buf[2048], visbuf[2048];
+	char ch, *cp, *np, *targ, *why, *vect[1], buf[16384], visbuf[16384];
 	struct timeval tv[2];
 
 #define	atime	tv[0]
diff -uNr openssh-7.3p1.orig/servconf.c openssh-7.3p1/servconf.c
--- openssh-7.3p1.orig/servconf.c	2016-07-27 15:54:27.000000000 -0700
+++ openssh-7.3p1/servconf.c	2016-09-08 17:56:17.161122373 -0700
@@ -57,6 +57,7 @@
 #include "auth.h"
 #include "myproposal.h"
 #include "digest.h"
+#include "sshbuf.h"
 
 static void add_listen_addr(ServerOptions *, char *, int);
 static void add_one_listen_addr(ServerOptions *, char *, int);
@@ -165,6 +166,10 @@
 	options->authorized_principals_file = NULL;
 	options->authorized_principals_command = NULL;
 	options->authorized_principals_command_user = NULL;
+	options->none_enabled = -1;
+	options->tcp_rcv_buf_poll = -1;
+	options->hpn_disabled = -1;
+	options->hpn_buffer_size = -1;
 	options->ip_qos_interactive = -1;
 	options->ip_qos_bulk = -1;
 	options->version_addendum = NULL;
@@ -196,6 +201,10 @@
 fill_default_server_options(ServerOptions *options)
 {
 	int i;
+	/* needed for hpn socket tests */
+	int sock;
+	int socksize;
+	int socksizelen = sizeof(int);
 
 	/* Portable-specific options */
 	if (options->use_pam == -1)
@@ -341,6 +350,43 @@
 	}
 	if (options->permit_tun == -1)
 		options->permit_tun = SSH_TUNMODE_NO;
+	if (options->none_enabled == -1)
+		options->none_enabled = 0;
+	if (options->hpn_disabled == -1)
+		options->hpn_disabled = 0;
+
+	if (options->hpn_buffer_size == -1) {
+		/* option not explicitly set. Now we have to figure out */
+		/* what value to use */
+		if (options->hpn_disabled == 1) {
+			options->hpn_buffer_size = CHAN_SES_WINDOW_DEFAULT;
+		} else {
+			/* get the current RCV size and set it to that */
+			/*create a socket but don't connect it */
+			/* we use that the get the rcv socket size */
+			sock = socket(AF_INET, SOCK_STREAM, 0);
+			getsockopt(sock, SOL_SOCKET, SO_RCVBUF,
+				   &socksize, &socksizelen);
+			close(sock);
+			options->hpn_buffer_size = socksize;
+			debug("HPN Buffer Size: %d", options->hpn_buffer_size);
+		}
+	} else {
+		/* we have to do this in case the user sets both values in a contradictory */
+		/* manner. hpn_disabled overrrides hpn_buffer_size*/
+		if (options->hpn_disabled <= 0) {
+			if (options->hpn_buffer_size == 0)
+				options->hpn_buffer_size = 1;
+			/* limit the maximum buffer to SSHBUF_SIZE_MAX (currently 256MB) */
+			if (options->hpn_buffer_size > (SSHBUF_SIZE_MAX / 1024)) {
+				options->hpn_buffer_size = SSHBUF_SIZE_MAX;
+			} else {
+				options->hpn_buffer_size *= 1024;
+			}
+		} else
+			options->hpn_buffer_size = CHAN_TCP_WINDOW_DEFAULT;
+	}
+
 	if (options->ip_qos_interactive == -1)
 		options->ip_qos_interactive = IPTOS_LOWDELAY;
 	if (options->ip_qos_bulk == -1)
@@ -415,6 +461,8 @@
 	sPasswordAuthentication, sKbdInteractiveAuthentication,
 	sListenAddress, sAddressFamily,
 	sPrintMotd, sPrintLastLog, sIgnoreRhosts,
+	sNoneEnabled,
+	sTcpRcvBufPoll, sHPNDisabled, sHPNBufferSize,
 	sX11Forwarding, sX11DisplayOffset, sX11UseLocalhost,
 	sPermitTTY, sStrictModes, sEmptyPasswd, sTCPKeepAlive,
 	sPermitUserEnvironment, sUseLogin, sAllowTcpForwarding, sCompression,
@@ -568,6 +616,10 @@
 	{ "revokedkeys", sRevokedKeys, SSHCFG_ALL },
 	{ "trustedusercakeys", sTrustedUserCAKeys, SSHCFG_ALL },
 	{ "authorizedprincipalsfile", sAuthorizedPrincipalsFile, SSHCFG_ALL },
+	{ "noneenabled", sNoneEnabled, SSHCFG_ALL },
+	{ "hpndisabled", sHPNDisabled, SSHCFG_ALL },
+	{ "hpnbuffersize", sHPNBufferSize, SSHCFG_ALL },
+	{ "tcprcvbufpoll", sTcpRcvBufPoll, SSHCFG_ALL },
 	{ "kexalgorithms", sKexAlgorithms, SSHCFG_GLOBAL },
 	{ "ipqos", sIPQoS, SSHCFG_ALL },
 	{ "authorizedkeyscommand", sAuthorizedKeysCommand, SSHCFG_ALL },
@@ -606,6 +658,7 @@
 
 	for (i = 0; keywords[i].name; i++)
 		if (strcasecmp(cp, keywords[i].name) == 0) {
+			debug("Config token is %s", keywords[i].name);
 			*flags = keywords[i].flags;
 			return keywords[i].opcode;
 		}
@@ -1185,10 +1238,27 @@
 			*intptr = value;
 		break;
 
+
+	case sTcpRcvBufPoll:
+		intptr = &options->tcp_rcv_buf_poll;
+		goto parse_flag;
+
+	case sHPNDisabled:
+		intptr = &options->hpn_disabled;
+		goto parse_flag;
+
+	case sHPNBufferSize:
+		intptr = &options->hpn_buffer_size;
+		goto parse_int;
+
 	case sIgnoreUserKnownHosts:
 		intptr = &options->ignore_user_known_hosts;
 		goto parse_flag;
 
+	case sNoneEnabled:
+		intptr = &options->none_enabled;
+		goto parse_flag;
+
 	case sRhostsRSAAuthentication:
 		intptr = &options->rhosts_rsa_authentication;
 		goto parse_flag;
diff -uNr openssh-7.3p1.orig/servconf.h openssh-7.3p1/servconf.h
--- openssh-7.3p1.orig/servconf.h	2016-07-27 15:54:27.000000000 -0700
+++ openssh-7.3p1/servconf.h	2016-09-08 17:56:17.161122373 -0700
@@ -172,6 +172,11 @@
 	char   *adm_forced_command;
 
 	int	use_pam;		/* Enable auth via PAM */
+        int     tcp_rcv_buf_poll;       /* poll tcp rcv window in autotuning kernels*/
+	int	hpn_disabled;		/* disable hpn functionality. false by default */
+	int	hpn_buffer_size;	/* set the hpn buffer size - default 3MB */
+
+	int	none_enabled;		/* Enable NONE cipher switch */
 
 	int	permit_tun;
 
diff -uNr openssh-7.3p1.orig/serverloop.c openssh-7.3p1/serverloop.c
--- openssh-7.3p1.orig/serverloop.c	2016-07-27 15:54:27.000000000 -0700
+++ openssh-7.3p1/serverloop.c	2016-09-08 17:56:17.162122338 -0700
@@ -93,10 +93,10 @@
 static int fdout;		/* Descriptor for stdout (for reading);
 				   May be same number as fdin. */
 static int fderr;		/* Descriptor for stderr.  May be -1. */
-static long stdin_bytes = 0;	/* Number of bytes written to stdin. */
-static long stdout_bytes = 0;	/* Number of stdout bytes sent to client. */
-static long stderr_bytes = 0;	/* Number of stderr bytes sent to client. */
-static long fdout_bytes = 0;	/* Number of stdout bytes read from program. */
+static u_long stdin_bytes = 0;	/* Number of bytes written to stdin. */
+static u_long stdout_bytes = 0;	/* Number of stdout bytes sent to client. */
+static u_long stderr_bytes = 0;	/* Number of stderr bytes sent to client. */
+static u_long fdout_bytes = 0;	/* Number of stdout bytes read from program. */
 static int stdin_eof = 0;	/* EOF message received from client. */
 static int fdout_eof = 0;	/* EOF encountered reading from fdout. */
 static int fderr_eof = 0;	/* EOF encountered readung from fderr. */
@@ -421,6 +435,7 @@
 		} else {
 			/* Buffer any received data. */
 			packet_process_incoming(buf, len);
+			fdout_bytes += len;
 		}
 	}
 	if (compat20)
@@ -443,6 +458,7 @@
 		} else {
 			buffer_append(&stdout_buffer, buf, len);
 			fdout_bytes += len;
+			debug("FD out now: %ld", fdout_bytes);
 		}
 	}
 	/* Read and buffer any available stderr data from the program. */
@@ -510,7 +526,7 @@
 	}
 	/* Send any buffered packet data to the client. */
 	if (FD_ISSET(connection_out, writeset))
-		packet_write_poll();
+		stdin_bytes += packet_write_poll();
 }
 
 /*
@@ -1045,8 +1061,12 @@
 	sock = tun_open(tun, mode);
 	if (sock < 0)
 		goto done;
+	if (options.hpn_disabled)
 	c = channel_new("tun", SSH_CHANNEL_OPEN, sock, sock, -1,
 	    CHAN_TCP_WINDOW_DEFAULT, CHAN_TCP_PACKET_DEFAULT, 0, "tun", 1);
+	else
+		c = channel_new("tun", SSH_CHANNEL_OPEN, sock, sock, -1,
+		    options.hpn_buffer_size, CHAN_TCP_PACKET_DEFAULT, 0, "tun", 1);
 	c->datagram = 1;
 #if defined(SSH_TUN_FILTER)
 	if (mode == SSH_TUNMODE_POINTOPOINT)
@@ -1082,6 +1102,8 @@
 	c = channel_new("session", SSH_CHANNEL_LARVAL,
 	    -1, -1, -1, /*window size*/0, CHAN_SES_PACKET_DEFAULT,
 	    0, "server-session", 1);
+	if ((options.tcp_rcv_buf_poll) && (!options.hpn_disabled))
+		c->dynamic_window = 1;
 	if (session_open(the_authctxt, c->self) != 1) {
 		debug("session open failed, free channel %d", c->self);
 		channel_free(c);
diff -uNr openssh-7.3p1.orig/session.c openssh-7.3p1/session.c
--- openssh-7.3p1.orig/session.c	2016-07-27 15:54:27.000000000 -0700
+++ openssh-7.3p1/session.c	2016-09-08 17:56:17.162122338 -0700
@@ -222,6 +222,7 @@
 		goto authsock_err;
 
 	/* Allocate a channel for the authentication agent socket. */
+	/* this shouldn't matter if its hpn or not - cjr */
 	nc = channel_new("auth socket",
 	    SSH_CHANNEL_AUTH_SOCKET, sock, sock, -1,
 	    CHAN_X11_WINDOW_DEFAULT, CHAN_X11_PACKET_DEFAULT,
@@ -2361,10 +2362,16 @@
 	 */
 	if (s->chanid == -1)
 		fatal("no channel for session %d", s->self);
+	if (options.hpn_disabled)
 	channel_set_fds(s->chanid,
 	    fdout, fdin, fderr,
 	    ignore_fderr ? CHAN_EXTENDED_IGNORE : CHAN_EXTENDED_READ,
 	    1, is_tty, CHAN_SES_WINDOW_DEFAULT);
+	else
+		channel_set_fds(s->chanid,
+		    fdout, fdin, fderr,
+		    ignore_fderr ? CHAN_EXTENDED_IGNORE : CHAN_EXTENDED_READ,
+		    1, is_tty, options.hpn_buffer_size);
 }
 
 /*
diff -uNr openssh-7.3p1.orig/sftp.1 openssh-7.3p1/sftp.1
--- openssh-7.3p1.orig/sftp.1	2016-07-27 15:54:27.000000000 -0700
+++ openssh-7.3p1/sftp.1	2016-09-08 17:56:17.163122304 -0700
@@ -266,7 +266,8 @@
 Specify how many requests may be outstanding at any one time.
 Increasing this may slightly improve file transfer speed
 but will increase memory usage.
-The default is 64 outstanding requests.
+The default is 256 outstanding requests providing for 8MB
+of outstanding data with a 32KB buffer.
 .It Fl r
 Recursively copy entire directories when uploading and downloading.
 Note that
diff -uNr openssh-7.3p1.orig/sftp.c openssh-7.3p1/sftp.c
--- openssh-7.3p1.orig/sftp.c	2016-07-27 15:54:27.000000000 -0700
+++ openssh-7.3p1/sftp.c	2016-09-08 17:56:17.163122304 -0700
@@ -73,7 +73,7 @@
 #include "sftp-client.h"
 
 #define DEFAULT_COPY_BUFLEN	32768	/* Size of buffer for up/download */
-#define DEFAULT_NUM_REQUESTS	64	/* # concurrent outstanding requests */
+#define DEFAULT_NUM_REQUESTS	256	/* # concurrent outstanding requests */
 
 /* File to read commands from */
 FILE* infile;
diff -uNr openssh-7.3p1.orig/sshbuf.h openssh-7.3p1/sshbuf.h
--- openssh-7.3p1.orig/sshbuf.h	2016-07-27 15:54:27.000000000 -0700
+++ openssh-7.3p1/sshbuf.h	2016-09-08 17:56:17.164122268 -0700
@@ -28,7 +28,7 @@
 # endif /* OPENSSL_HAS_ECC */
 #endif /* WITH_OPENSSL */
 
-#define SSHBUF_SIZE_MAX		0x8000000	/* Hard maximum size */
+#define SSHBUF_SIZE_MAX		0xF000000	/* Hard maximum size 256MB */
 #define SSHBUF_REFS_MAX		0x100000	/* Max child buffers */
 #define SSHBUF_MAX_BIGNUM	(16384 / 8)	/* Max bignum *bytes* */
 #define SSHBUF_MAX_ECPOINT	((528 * 2 / 8) + 1) /* Max EC point *bytes* */
diff -uNr openssh-7.3p1.orig/ssh.c openssh-7.3p1/ssh.c
--- openssh-7.3p1.orig/ssh.c	2016-07-27 15:54:27.000000000 -0700
+++ openssh-7.3p1/ssh.c	2016-09-08 17:56:17.164122268 -0700
@@ -910,6 +910,10 @@
 			break;
 		case 'T':
 			options.request_tty = REQUEST_TTY_NO;
+			/* ensure that the user doesn't try to backdoor a */
+			/* null cipher switch on an interactive session */
+			/* so explicitly disable it no matter what */
+			options.none_switch=0;
 			break;
 		case 'o':
 			line = xstrdup(optarg);
@@ -1502,6 +1506,8 @@
 	setproctitle("%s [mux]", options.control_path);
 }
 
+extern const EVP_CIPHER *evp_aes_ctr_mt(void);
+
 /* Do fork() after authentication. Used by "ssh -f" */
 static void
 fork_postauth(void)
@@ -1895,6 +1901,78 @@
 	    NULL, fileno(stdin), &command, environ);
 }
 
+static void
+hpn_options_init(void)
+{
+	/*
+	 * We need to check to see if what they want to do about buffer
+	 * sizes here. In a hpn to nonhpn connection we want to limit
+	 * the window size to something reasonable in case the far side
+	 * has the large window bug. In hpn to hpn connection we want to
+	 * use the max window size but allow the user to override it
+	 * lastly if they disabled hpn then use the ssh std window size.
+	 *
+	 * So why don't we just do a getsockopt() here and set the
+	 * ssh window to that? In the case of a autotuning receive
+	 * window the window would get stuck at the initial buffer
+	 * size generally less than 96k. Therefore we need to set the
+	 * maximum ssh window size to the maximum hpn buffer size
+	 * unless the user has specifically set the tcprcvbufpoll
+	 * to no. In which case we *can* just set the window to the
+	 * minimum of the hpn buffer size and tcp receive buffer size.
+	 */
+
+	if (tty_flag)
+		options.hpn_buffer_size = CHAN_SES_WINDOW_DEFAULT;
+	else
+		options.hpn_buffer_size = 2 * 1024 * 1024;
+
+	if (datafellows & SSH_BUG_LARGEWINDOW) {
+		debug("HPN to Non-HPN Connection");
+	} else {
+		int sock, socksize;
+		socklen_t socksizelen;
+		if (options.tcp_rcv_buf_poll <= 0) {
+			sock = socket(AF_INET, SOCK_STREAM, 0);
+			socksizelen = sizeof(socksize);
+			getsockopt(sock, SOL_SOCKET, SO_RCVBUF,
+				   &socksize, &socksizelen);
+			close(sock);
+			debug("socksize %d", socksize);
+			options.hpn_buffer_size = socksize;
+			debug("HPNBufferSize set to TCP RWIN: %d", options.hpn_buffer_size);
+		} else {
+			if (options.tcp_rcv_buf > 0) {
+				/*
+				 * Create a socket but don't connect it:
+				 * we use that the get the rcv socket size
+				 */
+				sock = socket(AF_INET, SOCK_STREAM, 0);
+				/*
+				 * If they are using the tcp_rcv_buf option,
+				 * attempt to set the buffer size to that.
+				 */
+				if (options.tcp_rcv_buf) {
+					socksizelen = sizeof(options.tcp_rcv_buf);
+					setsockopt(sock, SOL_SOCKET, SO_RCVBUF,
+						   &options.tcp_rcv_buf, socksizelen);
+				}
+				socksizelen = sizeof(socksize);
+				getsockopt(sock, SOL_SOCKET, SO_RCVBUF,
+					   &socksize, &socksizelen);
+				close(sock);
+				debug("socksize %d", socksize);
+				options.hpn_buffer_size = socksize;
+				debug("HPNBufferSize set to user TCPRcvBuf: %d", options.hpn_buffer_size);
+			}
+		}
+	}
+
+	debug("Final hpn_buffer_size = %d", options.hpn_buffer_size);
+
+	channel_set_hpn(options.hpn_disabled, options.hpn_buffer_size);
+}
+
 /* open new channel for a session */
 static int
 ssh_session2_open(void)
@@ -1921,9 +1999,11 @@
 	if (!isatty(err))
 		set_nonblock(err);
 
-	window = CHAN_SES_WINDOW_DEFAULT;
+	window = options.hpn_buffer_size;
+
 	packetmax = CHAN_SES_PACKET_DEFAULT;
 	if (tty_flag) {
+		window = CHAN_SES_WINDOW_DEFAULT;
 		window >>= 1;
 		packetmax >>= 1;
 	}
@@ -1932,6 +2012,10 @@
 	    window, packetmax, CHAN_EXTENDED_WRITE,
 	    "client-session", /*nonblock*/0);
 
+	if ((options.tcp_rcv_buf_poll > 0) && (!options.hpn_disabled)) {
+		c->dynamic_window = 1;
+		debug("Enabled Dynamic Window Scaling");
+	}
 	debug3("ssh_session2_open: channel_new: %d", c->self);
 
 	channel_send_open(c->self);
@@ -1947,6 +2031,13 @@
 {
 	int id = -1;
 
+	/*
+	 * We need to initialize this early because the forwarding logic below
+	 * might open channels that use the hpn buffer sizes.  We can't send a
+	 * window of -1 (the default) to the server as it breaks things.
+	 */
+	hpn_options_init();
+
 	/* XXX should be pre-session */
 	if (!options.control_persist)
 		ssh_init_stdio_forwarding();
diff -uNr openssh-7.3p1.orig/sshconnect2.c openssh-7.3p1/sshconnect2.c
--- openssh-7.3p1.orig/sshconnect2.c	2016-07-27 15:54:27.000000000 -0700
+++ openssh-7.3p1/sshconnect2.c	2016-09-08 17:56:17.165122233 -0700
@@ -83,6 +83,13 @@
 extern Options options;
 
 /*
+ * tty_flag is set in ssh.c. Use this in ssh_userauth2:
+ * if it is set, then prevent the switch to the null cipher.
+ */
+
+extern int tty_flag;
+
+/*
  * SSH2 key exchange
  */
 
@@ -154,6 +161,8 @@
 	return ret;
 }
 
+static char *myproposal[PROPOSAL_MAX];
+static const char *myproposal_default[PROPOSAL_MAX] = { KEX_CLIENT };
 void
 ssh_kex2(char *host, struct sockaddr *hostaddr, u_short port)
 {
@@ -162,6 +171,8 @@
 	struct kex *kex;
 	int r;
 
+	memcpy(&myproposal, &myproposal_default, sizeof(myproposal));
+
 	xxx_host = host;
 	xxx_hostaddr = hostaddr;
 
@@ -404,6 +415,44 @@
 	pubkey_cleanup(&authctxt);
 	ssh_dispatch_range(ssh, SSH2_MSG_USERAUTH_MIN, SSH2_MSG_USERAUTH_MAX, NULL);
 
+	/*
+	 * If the user wants to use the none cipher, do it post authentication
+	 * and only if the right conditions are met -- both of the NONE commands
+	 * must be true and there must be no tty allocated.
+	 */
+	if ((options.none_switch == 1) && (options.none_enabled == 1)) {
+		if (!tty_flag) { /* no null on tty sessions */
+			debug("Requesting none rekeying...");
+			memcpy(&myproposal, &myproposal_default, sizeof(myproposal));
+			myproposal[PROPOSAL_ENC_ALGS_STOC] = "none";
+			myproposal[PROPOSAL_ENC_ALGS_CTOS] = "none";
+			kex_prop2buf(active_state->kex->my, myproposal);
+			packet_request_rekeying();
+			fprintf(stderr, "WARNING: ENABLED NONE CIPHER\n");
+		} else {
+			/* requested NONE cipher when in a tty */
+			debug("Cannot switch to NONE cipher with tty allocated");
+			fprintf(stderr, "NONE cipher switch disabled when a TTY is allocated\n");
+		}
+	}
+
+#ifdef WITH_OPENSSL
+	/* if we are using aes-ctr there can be issues in either a fork or sandbox
+	 * so the initial aes-ctr is defined to point to the original single process
+	 * evp. After authentication we'll be past the fork and the sandboxed privsep
+	 * so we repoint the define to the multithreaded evp. To start the threads we
+	 * then force a rekey
+	 */
+	struct sshcipher_ctx *ccsend = ssh_packet_get_send_context(active_state);
+
+	/* only do this for the ctr cipher. otherwise gcm mode breaks. Don't know why though */
+	if (strstr(cipher_return_name(ccsend->cipher), "ctr")) {
+		debug("Single to Multithread CTR cipher swap - client request");
+		cipher_reset_multithreaded();
+		packet_request_rekeying();
+	}
+#endif
+
 	debug("Authentication succeeded (%s).", authctxt.method->name);
 }
 
diff -uNr openssh-7.3p1.orig/sshconnect.c openssh-7.3p1/sshconnect.c
--- openssh-7.3p1.orig/sshconnect.c	2016-07-27 15:54:27.000000000 -0700
+++ openssh-7.3p1/sshconnect.c	2016-09-08 17:56:17.164122268 -0700
@@ -268,6 +268,31 @@
 }
 
 /*
+ * Set TCP receive buffer if requested.
+ * Note: tuning needs to happen after the socket is
+ * created but before the connection happens
+ * so winscale is negotiated properly -cjr
+ */
+static void
+ssh_set_socket_recvbuf(int sock)
+{
+	void *buf = (void *)&options.tcp_rcv_buf;
+	int sz = sizeof(options.tcp_rcv_buf);
+	int socksize;
+	int socksizelen = sizeof(int);
+
+	debug("setsockopt Attempting to set SO_RCVBUF to %d", options.tcp_rcv_buf);
+	if (setsockopt(sock, SOL_SOCKET, SO_RCVBUF, buf, sz) >= 0) {
+	  getsockopt(sock, SOL_SOCKET, SO_RCVBUF, &socksize, &socksizelen);
+	  debug("setsockopt SO_RCVBUF: %.100s %d", strerror(errno), socksize);
+	}
+	else
+		error("Couldn't set socket receive buffer to %d: %.100s",
+		    options.tcp_rcv_buf, strerror(errno));
+}
+
+
+/*
  * Creates a (possibly privileged) socket for use as the ssh connection.
  */
 static int
@@ -283,6 +308,9 @@
 	}
 	fcntl(sock, F_SETFD, FD_CLOEXEC);
 
+	if (options.tcp_rcv_buf > 0)
+		ssh_set_socket_recvbuf(sock);
+
 	/* Bind the socket to an alternative local IP address */
 	if (options.bind_address == NULL && !privileged)
 		return sock;
@@ -527,10 +555,10 @@
 	/* Send our own protocol version identification. */
 	if (compat20) {
 		xasprintf(&client_version_string, "SSH-%d.%d-%.100s\r\n",
-		    PROTOCOL_MAJOR_2, PROTOCOL_MINOR_2, SSH_VERSION);
+		    PROTOCOL_MAJOR_2, PROTOCOL_MINOR_2, SSH_RELEASE);
 	} else {
 		xasprintf(&client_version_string, "SSH-%d.%d-%.100s\n",
-		    PROTOCOL_MAJOR_1, minor1, SSH_VERSION);
+		    PROTOCOL_MAJOR_1, minor1, SSH_RELEASE);
 	}
 	if (atomicio(vwrite, connection_out, client_version_string,
 	    strlen(client_version_string)) != strlen(client_version_string))
diff -uNr openssh-7.3p1.orig/sshd.c openssh-7.3p1/sshd.c
--- openssh-7.3p1.orig/sshd.c	2016-07-27 15:54:27.000000000 -0700
+++ openssh-7.3p1/sshd.c	2016-09-08 17:56:17.166122199 -0700
@@ -432,7 +432,7 @@
 	}
 
 	xasprintf(&server_version_string, "SSH-%d.%d-%.100s%s%s%s",
-	    major, minor, SSH_VERSION,
+	    major, minor, SSH_RELEASE,
 	    *options.version_addendum == '\0' ? "" : " ",
 	    options.version_addendum, newline);
 
@@ -487,6 +487,9 @@
 	}
 	debug("Client protocol version %d.%d; client software version %.100s",
 	    remote_major, remote_minor, remote_version);
+	logit("SSH: Server;Ltype: Version;Remote: %s-%d;Protocol: %d.%d;Client: %.100s",
+	      ssh_remote_ipaddr(ssh), ssh_remote_port(ssh),
+	    remote_major, remote_minor, remote_version);
 
 	ssh->compat = compat_datafellows(remote_version);
 
@@ -1177,6 +1180,8 @@
 	int ret, listen_sock, on = 1;
 	struct addrinfo *ai;
 	char ntop[NI_MAXHOST], strport[NI_MAXSERV];
+	int socksize;
+	int socksizelen = sizeof(int);
 
 	for (ai = options.listen_addrs; ai; ai = ai->ai_next) {
 		if (ai->ai_family != AF_INET && ai->ai_family != AF_INET6)
@@ -1217,6 +1222,11 @@
 
 		debug("Bind to port %s on %s.", strport, ntop);
 
+		getsockopt(listen_sock, SOL_SOCKET, SO_RCVBUF,
+				   &socksize, &socksizelen);
+		debug("Server TCP RWIN socket size: %d", socksize);
+		debug("HPN Buffer Size: %d", options.hpn_buffer_size);
+
 		/* Bind the socket to the desired port. */
 		if (bind(listen_sock, ai->ai_addr, ai->ai_addrlen) < 0) {
 			error("Bind to port %s on %s failed: %.200s.",
@@ -1758,6 +1768,13 @@
 	/* Fill in default values for those options not explicitly set. */
 	fill_default_server_options(&options);
 
+	if (options.none_enabled == 1) {
+		char *old_ciphers = options.ciphers;
+
+		xasprintf(&options.ciphers, "%s,none", old_ciphers);
+		free(old_ciphers);
+	}
+
 	/* challenge-response is implemented via keyboard interactive */
 	if (options.challenge_response_authentication)
 		options.kbd_interactive_authentication = 1;
@@ -2207,6 +2224,9 @@
 	    remote_ip, remote_port, laddr,  ssh_local_port(ssh));
 	free(laddr);
 
+	/* set the HPN options for the child */
+	channel_set_hpn(options.hpn_disabled, options.hpn_buffer_size);
+
 	/*
 	 * We don't want to listen forever unless the other side
 	 * successfully authenticates itself.  So we set up an alarm which is
@@ -2321,6 +2341,24 @@
 		notify_hostkeys(active_state);
 
 	/* Start session. */
+
+#ifdef WITH_OPENSSL
+	/* if we are using aes-ctr there can be issues in either a fork or sandbox
+	 * so the initial aes-ctr is defined to point ot the original single process
+	 * evp. After authentication we'll be past the fork and the sandboxed privsep
+	 * so we repoint the define to the multithreaded evp. To start the threads we
+	 * then force a rekey
+	 */
+	struct sshcipher_ctx *ccsend = ssh_packet_get_send_context(active_state);
+
+	/* only rekey if necessary. If we don't do this gcm mode cipher breaks */
+	if (strstr(cipher_return_name(ccsend->cipher), "ctr")) {
+		debug("Single to Multithreaded CTR cipher swap - server request");
+		cipher_reset_multithreaded();
+		packet_request_rekeying();
+	}
+#endif
+
 	do_authenticated(authctxt);
 
 	/* The connection has been terminated. */
@@ -2606,6 +2644,9 @@
 	struct kex *kex;
 	int r;
 
+	if (options.none_enabled == 1)
+		debug("WARNING: None cipher enabled");
+
 	myproposal[PROPOSAL_KEX_ALGS] = compat_kex_proposal(
 	    options.kex_algorithms);
 	myproposal[PROPOSAL_ENC_ALGS_CTOS] = compat_cipher_proposal(
diff -uNr openssh-7.3p1.orig/sshd_config openssh-7.3p1/sshd_config
--- openssh-7.3p1.orig/sshd_config	2016-07-27 15:54:27.000000000 -0700
+++ openssh-7.3p1/sshd_config	2016-09-08 17:56:17.166122199 -0700
@@ -124,6 +124,20 @@
 # override default of no subsystems
 Subsystem	sftp	/usr/libexec/sftp-server
 
+# the following are HPN related configuration options
+# tcp receive buffer polling. disable in non autotuning kernels
+#TcpRcvBufPoll yes
+
+# disable hpn performance boosts
+#HPNDisabled no
+
+# buffer size for hpn to non-hpn connections
+#HPNBufferSize 2048
+
+
+# allow the use of the none cipher
+#NoneEnabled no
+
 # Example of overriding settings on a per-user basis
 #Match User anoncvs
 #	X11Forwarding no
diff -uNr openssh-7.3p1.orig/version.h openssh-7.3p1/version.h
--- openssh-7.3p1.orig/version.h	2016-07-27 15:54:27.000000000 -0700
+++ openssh-7.3p1/version.h	2016-09-08 17:56:17.166122199 -0700
@@ -3,4 +3,5 @@
 #define SSH_VERSION	"OpenSSH_7.3"
 
 #define SSH_PORTABLE	"p1"
-#define SSH_RELEASE	SSH_VERSION SSH_PORTABLE
+#define SSH_HPN         "-hpn14v11"
+#define SSH_RELEASE	SSH_VERSION SSH_PORTABLE SSH_HPN
