#define BUFFER_MAX_CHUNK 0x100000
#define BUFFER_MAX_LEN 0xa00000
-#define BUFFER_ALLOCSZ 0x008000
+/* try increasing to 256k in hpnxfers */
+#define BUFFER_ALLOCSZ 0x008000 /* 32k */
+#define BUFFER_ALLOCSZ_HPN 0x040000 /* 256k */
/* Initializes the buffer structure. */
buffer->end = 0;
}
+
/* Frees any memory used for the buffer. */
void
buffer_append_space(Buffer *buffer, u_int len)
{
u_int newlen;
+ u_int buf_max;
+ u_int buf_alloc_sz;
void *p;
if (len > BUFFER_MAX_CHUNK)
if (buffer_compact(buffer))
goto restart;
+ // if hpn is disabled use the smaller buffer size
+ buf_max = BUFFER_MAX_LEN_HPN;
+ buf_alloc_sz = BUFFER_ALLOCSZ_HPN;
+
/* Increase the size of the buffer and retry. */
- newlen = roundup(buffer->alloc + len, BUFFER_ALLOCSZ);
- if (newlen > BUFFER_MAX_LEN)
+ newlen = roundup(buffer->alloc + len, buf_alloc_sz);
+
+
+ if (newlen > buf_max)
fatal("buffer_append_space: alloc %u not supported",
newlen);
buffer->buf = xrealloc(buffer->buf, 1, newlen);
int
buffer_check_alloc(Buffer *buffer, u_int len)
{
+ u_int buf_max;
+ u_int buf_alloc_sz;
+
if (buffer->offset == buffer->end) {
buffer->offset = 0;
buffer->end = 0;
return (1);
if (buffer_compact(buffer))
goto restart;
- if (roundup(buffer->alloc + len, BUFFER_ALLOCSZ) <= BUFFER_MAX_LEN)
+
+ // if hpn is disabled use the smaller buffer size
+ buf_max = BUFFER_MAX_LEN_HPN;
+ buf_alloc_sz = BUFFER_ALLOCSZ_HPN;
+
+ if (roundup(buffer->alloc + len, buf_alloc_sz) <= buf_max)
return (1);
return (0);
}
#ifndef BUFFER_H
#define BUFFER_H
+#define BUFFER_MAX_LEN_HPN 0x4000000 /* 64MB */
typedef struct {
u_char *buf; /* Buffer for data. */
#include "authfd.h"
#include "pathnames.h"
+
/* -- channel core */
/*
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;
FD_SET(c->sock, writeset);
}
+int channel_tcpwinsz () {
+ u_int32_t tcpwinsz = 0;
+ socklen_t optsz = sizeof(tcpwinsz);
+ int ret = -1;
+ if(!packet_connection_is_on_socket())
+ return(131072);
+ ret = getsockopt(packet_get_connection_in(),
+ SOL_SOCKET, SO_RCVBUF, &tcpwinsz, &optsz);
+ if ((ret == 0) && tcpwinsz > BUFFER_MAX_LEN_HPN)
+ tcpwinsz = BUFFER_MAX_LEN_HPN;
+ 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->tcpwinsz = channel_tcpwinsz();
+ if (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 &&
!(c->flags & (CHAN_CLOSE_SENT|CHAN_CLOSE_RCVD)) &&
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)) {
+ addition = 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;
static int
channel_setup_fwd_listener(int type, const char *listen_addr, u_short listen_port,
- const char *host_to_connect, u_short port_to_connect, int gateway_ports)
+ const char *host_to_connect, u_short port_to_connect, int gateway_ports,
+ int hpn_disabled, int hpn_buffer_size)
{
Channel *c;
int sock, r, success = 0, wildcard = 0, is_client;
continue;
}
/* 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);
strlcpy(c->path, host, sizeof(c->path));
c->host_port = port_to_connect;
c->listening_port = listen_port;
/* protocol local port fwd, used by ssh (and sshd in v1) */
int
channel_setup_local_fwd_listener(const char *listen_host, u_short listen_port,
- const char *host_to_connect, u_short port_to_connect, int gateway_ports)
+ const char *host_to_connect, u_short port_to_connect, int gateway_ports,
+ int hpn_disabled, int hpn_buffer_size)
{
return channel_setup_fwd_listener(SSH_CHANNEL_PORT_LISTENER,
listen_host, listen_port, host_to_connect, port_to_connect,
- gateway_ports);
+ gateway_ports, hpn_disabled, hpn_buffer_size);
}
/* protocol v2 remote port fwd, used by sshd */
int
channel_setup_remote_fwd_listener(const char *listen_address,
- u_short listen_port, int gateway_ports)
+ u_short listen_port, int gateway_ports, int hpn_disabled, int hpn_buffer_size)
{
return channel_setup_fwd_listener(SSH_CHANNEL_RPORT_LISTENER,
- listen_address, listen_port, NULL, 0, gateway_ports);
+ listen_address, listen_port, NULL, 0, gateway_ports,
+ hpn_disabled, hpn_buffer_size);
}
/*
* message if there was an error).
*/
int
-channel_input_port_forward_request(int is_root, int gateway_ports)
+channel_input_port_forward_request(int is_root, int gateway_ports,
+ int hpn_disabled, int hpn_buffer_size)
{
u_short port, host_port;
int success = 0;
/* Initiate forwarding */
success = channel_setup_local_fwd_listener(NULL, port, hostname,
- host_port, gateway_ports);
+ host_port, gateway_ports, hpn_disabled, hpn_buffer_size);
/* Free the argument string. */
xfree(hostname);
*/
int
x11_create_display_inet(int x11_display_offset, int x11_use_localhost,
- int single_connection, u_int *display_numberp, int **chanids)
+ int single_connection, u_int *display_numberp, int **chanids,
+ int hpn_disabled, int hpn_buffer_size)
{
Channel *nc = NULL;
int display_number, sock;
*chanids = xcalloc(num_socks + 1, sizeof(**chanids));
for (n = 0; n < num_socks; n++) {
sock = socks[n];
- 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);
+ 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;
}
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 */
#define CHAN_EXTENDED_WRITE 2
/* default window/packet sizes for tcp/x11-fwd-channel */
-#define CHAN_SES_PACKET_DEFAULT (32*1024)
-#define CHAN_SES_WINDOW_DEFAULT (4*CHAN_SES_PACKET_DEFAULT)
-#define CHAN_TCP_PACKET_DEFAULT (32*1024)
-#define CHAN_TCP_WINDOW_DEFAULT (4*CHAN_TCP_PACKET_DEFAULT)
-#define CHAN_X11_PACKET_DEFAULT (16*1024)
-#define CHAN_X11_WINDOW_DEFAULT (4*CHAN_X11_PACKET_DEFAULT)
+#define CHAN_SES_PACKET_DEFAULT (32*1024)
+#define CHAN_SES_WINDOW_DEFAULT_HPN (160*CHAN_TCP_PACKET_DEFAULT)
+#define CHAN_SES_WINDOW_DEFAULT (4*CHAN_SES_PACKET_DEFAULT)
+
+#define CHAN_TCP_PACKET_DEFAULT (32*1024)
+#define CHAN_TCP_WINDOW_DEFAULT_HPN (160*CHAN_TCP_PACKET_DEFAULT)
+#define CHAN_TCP_WINDOW_DEFAULT (4*CHAN_TCP_PACKET_DEFAULT)
+
+#define CHAN_X11_PACKET_DEFAULT (16*1024)
+#define CHAN_X11_WINDOW_DEFAULT_HPN (4*CHAN_X11_PACKET_DEFAULT)
+#define CHAN_X11_WINDOW_DEFAULT (4*CHAN_X11_PACKET_DEFAULT)
/* possible input states */
#define CHAN_INPUT_OPEN 0
int channel_add_adm_permitted_opens(char *, int);
void channel_clear_permitted_opens(void);
void channel_clear_adm_permitted_opens(void);
-int channel_input_port_forward_request(int, int);
+int channel_input_port_forward_request(int, int, int, int);
int channel_connect_to(const char *, u_short);
int channel_connect_by_listen_address(u_short);
int channel_request_remote_forwarding(const char *, u_short,
const char *, u_short);
int channel_setup_local_fwd_listener(const char *, u_short,
- const char *, u_short, int);
+ const char *, u_short, int, int, int);
void channel_request_rforward_cancel(const char *host, u_short port);
-int channel_setup_remote_fwd_listener(const char *, u_short, int);
+int channel_setup_remote_fwd_listener(const char *, u_short, int, int, int);
int channel_cancel_rport_listener(const char *, u_short);
/* x11 forwarding */
int x11_connect_display(void);
-int x11_create_display_inet(int, int, int, u_int *, int **);
+int x11_create_display_inet(int, int, int, u_int *, int **, int, int);
void x11_input_open(int, u_int32_t, void *);
void x11_request_forwarding_with_spoofing(int, const char *, const char *,
const char *);
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)) {
debug("bad cipher %s [%s]", p, names);
xfree(cipher_list);
return 0;
int evplen;
switch (c->number) {
+ case SSH_CIPHER_NONE:
case SSH_CIPHER_SSH2:
case SSH_CIPHER_DES:
case SSH_CIPHER_BLOWFISH:
int evplen = 0;
switch (c->number) {
+ case SSH_CIPHER_NONE:
case SSH_CIPHER_SSH2:
case SSH_CIPHER_DES:
case SSH_CIPHER_BLOWFISH:
u_int i, len, env_len, command, flags;
uid_t euid;
gid_t egid;
+ int listen_port = 0;
+ int connect_port = 0;
+ char * listen_host = NULL;
+ char * connect_host = NULL;
/*
* Accept connection on control socket
command = buffer_get_int(&m);
flags = buffer_get_int(&m);
+ if (SSHMUX_FLAG_PORTFORWARD & flags)
+ {
+ listen_host = buffer_get_string(&m,NULL);
+ listen_port = buffer_get_int(&m);
+ connect_host = buffer_get_string(&m,NULL);
+ connect_port = buffer_get_int(&m);
+ }
buffer_clear(&m);
switch (command) {
return;
}
+ if (allowed && (SSHMUX_FLAG_PORTFORWARD & flags) && listen_host && connect_host)
+ {
+ int ret;
+ Forward * fwd;
+
+ fwd = &options.local_forwards[options.num_local_forwards++];
+ fwd->listen_host = xstrdup(listen_host);
+ fwd->listen_port = listen_port;
+ fwd->connect_host = xstrdup(connect_host);
+ fwd->connect_port = connect_port;
+ ret = channel_setup_local_fwd_listener(
+ options.local_forwards[options.num_local_forwards-1].listen_host,
+ options.local_forwards[options.num_local_forwards-1].listen_port,
+ options.local_forwards[options.num_local_forwards-1].connect_host,
+ options.local_forwards[options.num_local_forwards-1].connect_port,
+ options.gateway_ports, options.hpn_disabled, options.hpn_buffer_size);
+
+ }
+
+
+ if (listen_host)
+ xfree(listen_host);
+ if (connect_host)
+ xfree(connect_host);
+
/* Reply for SSHMUX_COMMAND_OPEN */
buffer_clear(&m);
buffer_put_int(&m, allowed);
set_nonblock(client_fd);
- c = channel_new("session", SSH_CHANNEL_OPENING,
- new_fd[0], new_fd[1], new_fd[2],
- CHAN_SES_WINDOW_DEFAULT, CHAN_SES_PACKET_DEFAULT,
- CHAN_EXTENDED_WRITE, "client-session", /*nonblock*/0);
-
+ if (options.hpn_disabled)
+ c = channel_new("session", SSH_CHANNEL_OPENING,
+ new_fd[0], new_fd[1], new_fd[2],
+ CHAN_SES_WINDOW_DEFAULT, CHAN_SES_PACKET_DEFAULT,
+ CHAN_EXTENDED_WRITE, "client-session", /*nonblock*/0);
+ else
+ c = channel_new("session", SSH_CHANNEL_OPENING,
+ new_fd[0], new_fd[1], new_fd[2],
+ options.hpn_buffer_size, CHAN_SES_PACKET_DEFAULT,
+ CHAN_EXTENDED_WRITE, "client-session", /*nonblock*/0);
/* XXX */
c->ctl_fd = client_fd;
if (local) {
if (channel_setup_local_fwd_listener(fwd.listen_host,
fwd.listen_port, fwd.connect_host,
- fwd.connect_port, options.gateway_ports) < 0) {
+ fwd.connect_port, options.gateway_ports,
+ options.hpn_disabled, options.hpn_buffer_size) < 0) {
logit("Port forwarding failed.");
goto out;
}
xfree(listen_address);
return NULL;
}
- c = channel_new("forwarded-tcpip",
- SSH_CHANNEL_CONNECTING, sock, sock, -1,
- CHAN_TCP_WINDOW_DEFAULT, CHAN_TCP_WINDOW_DEFAULT, 0,
- originator_address, 1);
+ if (options.hpn_disabled)
+ c = channel_new("forwarded-tcpip",
+ SSH_CHANNEL_CONNECTING, sock, sock, -1,
+ CHAN_TCP_WINDOW_DEFAULT, CHAN_TCP_WINDOW_DEFAULT, 0,
+ originator_address, 1);
+ else
+ c = channel_new("forwarded-tcpip",
+ SSH_CHANNEL_CONNECTING, sock, sock, -1,
+ options.hpn_buffer_size, options.hpn_buffer_size, 0,
+ originator_address, 1);
xfree(originator_address);
xfree(listen_address);
return c;
sock = x11_connect_display();
if (sock < 0)
return NULL;
- c = channel_new("x11",
- SSH_CHANNEL_X11_OPEN, sock, sock, -1,
- CHAN_TCP_WINDOW_DEFAULT, CHAN_X11_PACKET_DEFAULT, 0, "x11", 1);
+ 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;
}
sock = ssh_get_authentication_socket();
if (sock < 0)
return NULL;
- c = channel_new("authentication agent connection",
- SSH_CHANNEL_OPEN, sock, sock, -1,
- CHAN_X11_WINDOW_DEFAULT, CHAN_TCP_WINDOW_DEFAULT, 0,
- "authentication agent connection", 1);
+ if (options.hpn_disabled)
+ c = channel_new("authentication agent connection",
+ SSH_CHANNEL_OPEN, sock, sock, -1,
+ CHAN_X11_WINDOW_DEFAULT, CHAN_TCP_WINDOW_DEFAULT, 0,
+ "authentication agent connection", 1);
+ else
+ c = channel_new("authentication agent connection",
+ SSH_CHANNEL_OPEN, sock, sock, -1,
+ options.hpn_buffer_size, options.hpn_buffer_size, 0,
+ "authentication agent connection", 1);
c->force_drain = 1;
return c;
}
#define SSHMUX_COMMAND_OPEN 1 /* Open new connection */
#define SSHMUX_COMMAND_ALIVE_CHECK 2 /* Check master is alive */
#define SSHMUX_COMMAND_TERMINATE 3 /* Ask master to exit */
+#define SSHMUX_COMMAND_PORTFORWARD 4 /* Ask master to portforward */
#define SSHMUX_FLAG_TTY (1) /* Request tty on open */
#define SSHMUX_FLAG_SUBSYS (1<<1) /* Subsystem request on open */
#define SSHMUX_FLAG_X11_FWD (1<<2) /* Request X11 forwarding */
#define SSHMUX_FLAG_AGENT_FWD (1<<3) /* Request agent forwarding */
+#define SSHMUX_FLAG_PORTFORWARD (1<<4) /* Request portforward */
strlen(check[i].pat), 0) == 1) {
debug("match: %s pat %s", version, check[i].pat);
datafellows = check[i].bugs;
+ /* 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;
}
}
#define SSH_BUG_PROBE 0x00400000
#define SSH_BUG_FIRSTKEX 0x00800000
#define SSH_OLD_FORWARD_ADDR 0x01000000
+#define SSH_BUG_LARGEWINDOW 0x02000000
void enable_compat13(void);
void enable_compat20(void);
static void kex_choose_conf(Kex *);
/* put algorithm proposal into buffer */
-static void
+void
kex_prop2buf(Buffer *b, char *proposal[PROPOSAL_MAX])
{
u_int i;
void (*kex[KEX_MAX])(Kex *);
};
+void kex_prop2buf(Buffer *, char *proposal[PROPOSAL_MAX]);
+
Kex *kex_setup(char *[PROPOSAL_MAX]);
void kex_finish(Kex *);
"arcfour128,arcfour256,arcfour," \
"aes192-cbc,aes256-cbc,rijndael-cbc@lysator.liu.se," \
"aes128-ctr,aes192-ctr,aes256-ctr"
+#define KEX_ENCRYPT_INCLUDE_NONE KEX_DEFAULT_ENCRYPT \
+ ",none"
#define KEX_DEFAULT_MAC \
"hmac-md5,hmac-sha1,hmac-ripemd160," \
"hmac-ripemd160@openssh.com," \
rnd >>= 8;
}
}
+int rekey_requested = 0;
+
+void
+packet_request_rekeying(void)
+{
+ rekey_requested = 1;
+}
#define MAX_PACKETS (1U<<31)
int
{
if (datafellows & SSH_BUG_NOREKEY)
return 0;
+ if (rekey_requested == 1)
+ {
+ rekey_requested = 0;
+ return 1;
+ }
return
(p_send.packets > MAX_PACKETS) ||
(p_read.packets > MAX_PACKETS) ||
#include <openssl/bn.h>
+void
+packet_request_rekeying(void);
+
void packet_set_connection(int, int);
void packet_set_nonblocking(void);
int packet_get_connection_in(void);
oServerAliveInterval, oServerAliveCountMax, oIdentitiesOnly,
oSendEnv, oControlPath, oControlMaster, oHashKnownHosts,
oTunnel, oTunnelDevice, oLocalCommand, oPermitLocalCommand,
+ oNoneEnabled, oTcpRcvBufPoll, oTcpRcvBuf, oNoneSwitch, oHPNDisabled,
+ oHPNBufferSize,
oDeprecated, oUnsupported
} OpCodes;
{ "tunneldevice", oTunnelDevice },
{ "localcommand", oLocalCommand },
{ "permitlocalcommand", oPermitLocalCommand },
+ { "noneenabled", oNoneEnabled },
+ { "tcprcvbufpoll", oTcpRcvBufPoll },
+ { "tcprcvbuf", oTcpRcvBuf },
+ { "noneswitch", oNoneSwitch },
+ { "hpndisabled", oHPNDisabled },
+ { "hpnbuffersize", oHPNBufferSize },
{ NULL, oBadOption }
};
intptr = &options->check_host_ip;
goto parse_flag;
+ case oNoneEnabled:
+ intptr = &options->none_enabled;
+ goto parse_flag;
+
+ case oNoneSwitch:
+ intptr = &options->none_switch;
+ goto parse_flag;
+
+ 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;
goto parse_yesnoask;
+
case oStrictHostKeyChecking:
intptr = &options->strict_host_key_checking;
parse_yesnoask:
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);
options->tun_remote = -1;
options->local_command = NULL;
options->permit_local_command = -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->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->hpn_disabled == -1)
+ options->hpn_disabled = 0;
+ if (options->hpn_buffer_size > -1)
+ {
+ if (options->hpn_buffer_size == 0)
+ options->hpn_buffer_size = 1;
+ /*limit the buffer to 7MB*/
+ if (options->hpn_buffer_size > 7168)
+ {
+ options->hpn_buffer_size = 7168;
+ debug("User requested buffer larger than 7MB. Request reverted to 7MB");
+ }
+ 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->control_master == -1)
options->control_master = 0;
if (options->hash_known_hosts == -1)
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 */
+
LogLevel log_level; /* Level for logging. */
int port; /* Port to connect. */
int enable_ssh_keysign;
int rekey_limit;
+ int none_switch; /* use none cipher */
+ int none_enabled; /* Allow none to be used */
int no_host_authentication_for_localhost;
int identities_only;
int server_alive_interval;
case '4':
case '6':
case 'C':
- addargs(&args, "-%c", ch);
- break;
+ addargs(&args, "-%c", ch);
+ break;
case 'o':
case 'c':
case 'i':
off_t i, amt, statbytes;
size_t result;
int fd = -1, haderr, indx;
- char *last, *name, buf[2048];
+ char *last, *name, buf[16384];
int len;
for (indx = 0; indx < argc; ++indx) {
(void) atomicio(vwrite, remout, buf, strlen(buf));
if (response() < 0)
goto next;
- if ((bp = allocbuf(&buffer, fd, 2048)) == NULL) {
+ if ((bp = allocbuf(&buffer, fd, sizeof(buf))) == NULL) {
next: if (fd != -1) {
(void) close(fd);
fd = -1;
mode_t mode, omode, mask;
off_t size, statbytes;
int setimes, targisdir, wrerrno = 0;
- char ch, *cp, *np, *targ, *why, *vect[1], buf[2048];
+ char ch, *cp, *np, *targ, *why, *vect[1], buf[16384];
struct timeval tv[2];
#define atime tv[0]
continue;
}
(void) atomicio(vwrite, remout, "", 1);
- if ((bp = allocbuf(&buffer, ofd, 4096)) == NULL) {
+ if ((bp = allocbuf(&buffer, ofd, sizeof(buf))) == NULL) {
(void) close(ofd);
continue;
}
statbytes = 0;
if (showprogress)
start_progress_meter(curfile, size, &statbytes);
- for (count = i = 0; i < size; i += 4096) {
- amt = 4096;
+ for (count = i = 0; i < size; i += sizeof(buf)) {
+ amt = sizeof(buf);
if (i + amt > size)
amt = size - i;
count += amt;
} while (amt > 0);
if (limit_rate)
- bwlimit(4096);
+ bwlimit(sizeof(buf));
if (count == bp->cnt) {
/* Keep reading so we stay sync'd up. */
options->permit_tun = -1;
options->num_permitted_opens = -1;
options->adm_forced_command = NULL;
+ options->none_enabled = -1;
+ options->tcp_rcv_buf_poll = -1;
+ options->hpn_disabled = -1;
+ options->hpn_buffer_size = -1;
}
void
fill_default_server_options(ServerOptions *options)
{
+ int sock;
+ int socksize;
+ int socksizelen = sizeof(int);
+
/* Portable-specific options */
if (options->use_pam == -1)
options->use_pam = 0;
if (options->permit_tun == -1)
options->permit_tun = SSH_TUNMODE_NO;
+ 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 incase 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 64MB */
+ if (options->hpn_buffer_size > 64*1024)
+ options->hpn_buffer_size = 64*1024;
+ options->hpn_buffer_size *=1024;
+ }
+ else
+ options->hpn_buffer_size = CHAN_SES_WINDOW_DEFAULT;
+ }
+
/* Turn privilege separation on by default */
if (use_privsep == -1)
use_privsep = 1;
+
+
#ifndef HAVE_MMAP
if (use_privsep && options->compression == 1) {
error("This platform does not support both privilege "
sGssKeyEx,
sAcceptEnv, sPermitTunnel,
sMatch, sPermitOpen, sForceCommand,
- sUsePrivilegeSeparation,
+ sUsePrivilegeSeparation, sNoneEnabled, sTcpRcvBufPoll,
+ sHPNDisabled, sHPNBufferSize,
sDeprecated, sUnsupported
} ServerOpCodes;
{ "match", sMatch, SSHCFG_ALL },
{ "permitopen", sPermitOpen, SSHCFG_ALL },
{ "forcecommand", sForceCommand, SSHCFG_ALL },
+ { "noneenabled", sNoneEnabled },
+ { "hpndisabled", sHPNDisabled },
+ { "hpnbuffersize", sHPNBufferSize },
+ { "tcprcvbufpoll", sTcpRcvBufPoll },
{ NULL, sBadOption, 0 }
};
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;
}
*intptr = value;
break;
+ case sNoneEnabled:
+ intptr = &options->none_enabled;
+ goto parse_flag;
+
+ 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;
char *adm_forced_command;
int use_pam; /* Enable auth via PAM */
+ int none_enabled; /* enable NONE cipher switch */
+ 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 permit_tun;
xfree(originator);
if (sock < 0)
return NULL;
- c = channel_new("direct-tcpip", SSH_CHANNEL_CONNECTING,
- sock, sock, -1, CHAN_TCP_WINDOW_DEFAULT,
- CHAN_TCP_PACKET_DEFAULT, 0, "direct-tcpip", 1);
+ if (options.hpn_disabled)
+ c = channel_new("direct-tcpip", SSH_CHANNEL_CONNECTING,
+ sock, sock, -1, CHAN_TCP_WINDOW_DEFAULT,
+ CHAN_TCP_PACKET_DEFAULT, 0, "direct-tcpip", 1);
+ else
+ c = channel_new("direct-tcpip", SSH_CHANNEL_CONNECTING,
+ sock, sock, -1, options.hpn_buffer_size,
+ CHAN_TCP_PACKET_DEFAULT, 0, "direct-tcpip", 1);
return c;
}
sock = tun_open(tun, mode);
if (sock < 0)
goto done;
- c = channel_new("tun", SSH_CHANNEL_OPEN, sock, sock, -1,
- CHAN_TCP_WINDOW_DEFAULT, CHAN_TCP_PACKET_DEFAULT, 0, "tun", 1);
+ 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)
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 > 0) && (!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);
} else {
/* Start listening on the port */
success = channel_setup_remote_fwd_listener(
- listen_address, listen_port, options.gateway_ports);
+ listen_address, listen_port, options.gateway_ports,
+ options.hpn_disabled, options.hpn_buffer_size);
}
xfree(listen_address);
} else if (strcmp(rtype, "cancel-tcpip-forward") == 0) {
packet_disconnect("listen: %.100s", strerror(errno));
/* 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,
}
debug("Received TCP/IP port forwarding request.");
if (channel_input_port_forward_request(s->pw->pw_uid == 0,
- options.gateway_ports) < 0) {
+ options.gateway_ports, options.hpn_disabled,
+ options.hpn_buffer_size) < 0) {
debug("Port forwarding failed.");
break;
}
*/
if (s->chanid == -1)
fatal("no channel for session %d", s->self);
- channel_set_fds(s->chanid,
- fdout, fdin, fderr,
- fderr == -1 ? CHAN_EXTENDED_IGNORE : CHAN_EXTENDED_READ,
- 1,
- CHAN_SES_WINDOW_DEFAULT);
+ if(options.hpn_disabled)
+ channel_set_fds(s->chanid,
+ fdout, fdin, fderr,
+ fderr == -1 ? CHAN_EXTENDED_IGNORE : CHAN_EXTENDED_READ,
+ 1,
+ CHAN_SES_WINDOW_DEFAULT);
+ else
+ channel_set_fds(s->chanid,
+ fdout, fdin, fderr,
+ fderr == -1 ? CHAN_EXTENDED_IGNORE : CHAN_EXTENDED_READ,
+ 1,
+ options.hpn_buffer_size);
}
/*
}
if (x11_create_display_inet(options.x11_display_offset,
options.x11_use_localhost, s->single_connection,
- &s->display_number, &s->x11_chanids) == -1) {
+ &s->display_number, &s->x11_chanids,
+ options.hpn_disabled, options.hpn_buffer_size) == -1) {
debug("x11_create_display_inet failed.");
return 0;
}
no_shell_flag = 1;
no_tty_flag = 1;
break;
- case 'T':
- no_tty_flag = 1;
- break;
case 'o':
dummy = 1;
line = xstrdup(optarg);
exit(255);
xfree(line);
break;
+ case 'T':
+ no_tty_flag = 1;
+ /* 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 's':
subsystem_flag = 1;
break;
options.local_forwards[i].listen_port,
options.local_forwards[i].connect_host,
options.local_forwards[i].connect_port,
- options.gateway_ports);
+ options.gateway_ports, options.hpn_disabled,
+ options.hpn_buffer_size);
}
if (i > 0 && success != i && options.exit_on_forward_failure)
fatal("Could not request local forwarding.");
debug("Requesting tun.");
if ((fd = tun_open(options.tun_local,
options.tun_open)) >= 0) {
- c = channel_new("tun", SSH_CHANNEL_OPENING, fd, fd, -1,
- CHAN_TCP_WINDOW_DEFAULT, CHAN_TCP_PACKET_DEFAULT,
- 0, "tun", 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,
+ 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 *c;
int window, packetmax, in, out, err;
+ int sock;
+ int socksize;
+ int socksizelen = sizeof(int);
if (stdin_null_flag) {
in = open(_PATH_DEVNULL, O_RDONLY);
if (!isatty(err))
set_nonblock(err);
- window = CHAN_SES_WINDOW_DEFAULT;
+ /* 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 hasspecifically set the hpnrcvbufpoll */
+ /* 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(options.hpn_disabled)
+ {
+ options.hpn_buffer_size = CHAN_SES_WINDOW_DEFAULT;
+ }
+ else if (datafellows & SSH_BUG_LARGEWINDOW)
+ {
+ debug("HPN to Non-HPN Connection");
+ if (options.hpn_buffer_size < 0)
+ options.hpn_buffer_size = 2*1024*1024;
+ }
+ else
+ {
+ if (options.hpn_buffer_size < 0)
+ options.hpn_buffer_size = BUFFER_MAX_LEN_HPN;
+
+ /*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)
+ setsockopt(sock, SOL_SOCKET, SO_RCVBUF, (void *)&options.tcp_rcv_buf,
+ sizeof(options.tcp_rcv_buf));
+ getsockopt(sock, SOL_SOCKET, SO_RCVBUF,
+ &socksize, &socksizelen);
+ close(sock);
+ debug("socksize %d", socksize);
+ if (options.tcp_rcv_buf_poll <= 0)
+ {
+ options.hpn_buffer_size = MIN(socksize,options.hpn_buffer_size);
+ debug ("MIN of TCP RWIN and HPNBufferSize: %d", options.hpn_buffer_size);
+ }
+ else
+ {
+ if (options.tcp_rcv_buf > 0)
+ options.hpn_buffer_size = MIN(options.tcp_rcv_buf, options.hpn_buffer_size);
+ debug ("MIN of TCPRcvBuf and HPNBufferSize: %d", options.hpn_buffer_size);
+ }
+
+ }
+
+ debug("Final hpn_buffer_size = %d", options.hpn_buffer_size);
+
+ window = options.hpn_buffer_size;
+
packetmax = CHAN_SES_PACKET_DEFAULT;
if (tty_flag) {
+ window = 4*CHAN_SES_PACKET_DEFAULT;
window >>= 1;
packetmax >>= 1;
}
"session", SSH_CHANNEL_OPENING, in, out, err,
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\n");
+ }
debug3("ssh_session2_open: channel_new: %d", c->self);
channel_send_open(c->self);
flags |= SSHMUX_FLAG_X11_FWD;
if (options.forward_agent)
flags |= SSHMUX_FLAG_AGENT_FWD;
-
+ if (options.num_local_forwards > 0)
+ flags |= SSHMUX_FLAG_PORTFORWARD;
buffer_init(&m);
/* Send our command to server */
buffer_put_int(&m, mux_command);
buffer_put_int(&m, flags);
+ if (options.num_local_forwards > 0)
+ {
+ if (options.local_forwards[0].listen_host == NULL)
+ buffer_put_string(&m,"LOCALHOST",11);
+ else
+ buffer_put_string(&m,options.local_forwards[0].listen_host,512);
+ buffer_put_int(&m,options.local_forwards[0].listen_port);
+ buffer_put_string(&m,options.local_forwards[0].connect_host,512);
+ buffer_put_int(&m,options.local_forwards[0].connect_port);
+ }
if (ssh_msg_send(sock, SSHMUX_VER, &m) == -1)
fatal("%s: msg_send", __func__);
buffer_clear(&m);
return 0;
}
+/*
+ * 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.
*/
strerror(errno));
else
debug("Allocated local port %d.", p);
+
+ if (options.tcp_rcv_buf > 0)
+ ssh_set_socket_recvbuf(sock);
return sock;
}
sock = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
if (sock < 0)
error("socket: %.100s", strerror(errno));
-
- /* Bind the socket to an alternative local IP address */
+
+ 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)
return sock;
snprintf(buf, sizeof buf, "SSH-%d.%d-%.100s\n",
compat20 ? PROTOCOL_MAJOR_2 : PROTOCOL_MAJOR_1,
compat20 ? PROTOCOL_MINOR_2 : minor1,
- SSH_VERSION);
+ SSH_RELEASE);
if (atomicio(vwrite, connection_out, buf, strlen(buf)) != strlen(buf))
fatal("write: %.100s", strerror(errno));
client_version_string = xstrdup(buf);
extern char *client_version_string;
extern char *server_version_string;
extern Options options;
+extern Kex *xxx_kex;
+
+/* 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
if (options.ciphers != NULL) {
myproposal[PROPOSAL_ENC_ALGS_CTOS] =
myproposal[PROPOSAL_ENC_ALGS_STOC] = options.ciphers;
- }
+ }
+
myproposal[PROPOSAL_ENC_ALGS_CTOS] =
compat_cipher_proposal(myproposal[PROPOSAL_ENC_ALGS_CTOS]);
myproposal[PROPOSAL_ENC_ALGS_STOC] =
pubkey_cleanup(&authctxt);
dispatch_range(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...");
+ myproposal[PROPOSAL_ENC_ALGS_STOC] = "none";
+ myproposal[PROPOSAL_ENC_ALGS_CTOS] = "none";
+ kex_prop2buf(&xxx_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");
+ }
+ }
debug("Authentication succeeded (%s).", authctxt.method->name);
}
major = PROTOCOL_MAJOR_1;
minor = PROTOCOL_MINOR_1;
}
- snprintf(buf, sizeof buf, "SSH-%d.%d-%.100s\n", major, minor, SSH_VERSION);
+ snprintf(buf, sizeof buf, "SSH-%d.%d-%.100s\n", major, minor, SSH_RELEASE);
server_version_string = xstrdup(buf);
/* Send our protocol version identification. */
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)
error("setsockopt SO_REUSEADDR: %s", strerror(errno));
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) {
if (options.ciphers != NULL) {
myproposal[PROPOSAL_ENC_ALGS_CTOS] =
myproposal[PROPOSAL_ENC_ALGS_STOC] = options.ciphers;
+ } else if (options.none_enabled == 1) {
+ debug ("WARNING: None cipher enabled");
+ myproposal[PROPOSAL_ENC_ALGS_CTOS] =
+ myproposal[PROPOSAL_ENC_ALGS_STOC] = KEX_ENCRYPT_INCLUDE_NONE;
}
myproposal[PROPOSAL_ENC_ALGS_CTOS] =
compat_cipher_proposal(myproposal[PROPOSAL_ENC_ALGS_CTOS]);
# override default of no subsystems
Subsystem sftp /usr/libexec/sftp-server
+# the following are HPN related configuration options
+# tcp receive buffer polling. enable in autotuning kernels
+#TcpRcvBufPoll no
+
+# allow the use of the none cipher
+#NoneEnabled no
+
+# disable hpn performance boosts.
+#HPNDisabled no
+
+# buffer size for hpn to non-hn connections
+#HPNBufferSize 2048
+
+
# Example of overriding settings on a per-user basis
#Match User anoncvs
# X11Forwarding no
#define SSH_VERSION "OpenSSH_4.5"
#define SSH_PORTABLE "p1"
-#define SSH_RELEASE SSH_VERSION SSH_PORTABLE
+#define SSH_HPN "-hpn12v14"
+#define SSH_RELEASE SSH_VERSION SSH_PORTABLE SSH_HPN
andersk / gssapi-openssh.git / commitdiff
