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Set tcp priority as follows:

Browse Source 
if (connecting || ptys || x11) tos = LOWDELAY;
else if (tcp_forwards) tos = 0;
else tos = BULK;

TCP forwards could be either lowdelay or bulk, hence the default priority.
This commit is contained in:
Matt Johnston
2014-07-16 22:53:32 +08:00
parent f1826ea389
commit da57dd13c5
13 changed files with 120 additions and 25 deletions
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48
common-session.c
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@@ -59,6 +59,10 @@ void common_session_init(int sock_in, int sock_out) {
ses.sock_out = sock_out;
ses.maxfd = MAX(sock_in, sock_out);
ses.socket_prio = DROPBEAR_PRIO_DEFAULT;
/* Sets it to lowdelay */
update_channel_prio();
now = monotonic_now();
ses.last_packet_time_keepalive_recv = now;
ses.last_packet_time_idle = now;
@@ -512,3 +516,47 @@ void fill_passwd(const char* username) {
}
}
/* Called when channels are modified */
void update_channel_prio() {
enum dropbear_prio new_prio;
int any = 0;
unsigned int i;
TRACE(("update_channel_prio"))
new_prio = DROPBEAR_PRIO_BULK;
for (i = 0; i < ses.chansize; i++) {
struct Channel *channel = ses.channels[i];
if (!channel || channel->prio == DROPBEAR_CHANNEL_PRIO_EARLY) {
if (channel && channel->prio == DROPBEAR_CHANNEL_PRIO_EARLY) {
TRACE(("update_channel_prio: early %d", channel->index))
}
continue;
}
any = 1;
if (channel->prio == DROPBEAR_CHANNEL_PRIO_INTERACTIVE)
{
TRACE(("update_channel_prio: lowdelay %d", channel->index))
new_prio = DROPBEAR_PRIO_LOWDELAY;
break;
} else if (channel->prio == DROPBEAR_CHANNEL_PRIO_UNKNOWABLE
&& new_prio == DROPBEAR_PRIO_BULK)
{
TRACE(("update_channel_prio: unknowable %d", channel->index))
new_prio = DROPBEAR_PRIO_DEFAULT;
}
}
if (any == 0) {
/* lowdelay during setup */
TRACE(("update_channel_prio: not any"))
new_prio = DROPBEAR_PRIO_LOWDELAY;
}
if (new_prio != ses.socket_prio) {
TRACE(("Dropbear priority transitioning %4.4s -> %4.4s", (char*)&ses.socket_prio, (char*)&new_prio))
set_sock_priority(ses.sock_out, new_prio);
ses.socket_prio = new_prio;
}
}