Displaying 8 results from an estimated 8 matches for "tcp_ack".
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2006 Jan 04
0
tcng questions: TCP_ACK, ebtables
Hi all,
I have a couple of questions regarding tcng behavior.
First - I want to mark TCP_ACK packets as high priority, a common case. I
figured the tcp_ACK rule in fields4.tc would be enough but I''ve come
across Jason Boxman''s tutorial and he recommends using:
class( <$ack> )
if ip_len < 64 &&
ip_hl == 0x5 &&
(raw[33].b >>...
2004 Mar 22
2
tcng TCP ACK match
...be shaped as
expected. But this TCNG configuration doesn''t product the same results.
Does anyone know what I did wrong?
dev "eth0" {
egress {
/* if (raw[33] >> 4) & 1; */
class( <$ack> )
if (ip_hl == 0x5) &&
(ip_len & 0xffc0) &&
tcp_ACK;
class( <$other> ) if 1;
htb() {
class ( rate 230kbps, ceil 230kbps ) {
$ack = class( rate 64kbps, ceil 230kbps, prio 1 ) {
sfq;
}
$other = class( rate 64kbps, ceil 230kbps, prio 2 ) {
sfq;
}
}
}
}
}
Which generates:
tc qdisc add dev eth0 ha...
2016 Nov 28
1
CentOS 6.4 tcp_fatretrans_alert causes panic
...000000000
RBP: ffff8800282839b0 R8: 000000018033a9ac R9: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000d03 R15: 0000000000000000
ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0000
#8 [ffff8800282839b8] tcp_ack at ffffffff814afb2c
#9 [ffff880028283a88] tcp_rcv_state_process at ffffffff814b1128
#10 [ffff880028283b18] tcp_v4_do_rcv at ffffffff814b94f0
#11 [ffff880028283bb8] tcp_v4_rcv at ffffffff814baf9a
#12 [ffff880028283c48] ip_local_deliver_finish at ffffffff8149648d
#13 [ffff880028283c78] ip_local_deli...
2004 May 05
3
Simple HTB setup with tcng
Hello all,
I am trying to set up a simple htb based system, where packets with
source ip 10.0.0.1 should have their own class.
I plan to use tcng to set it up easier.
Is there something wrong in my tcng file ?
~/tcng$ cat htb
/*
*/
#include "fields.tc"
#include "ports.tc"
dev eth0 {
htb ( ) {
class ( rate 600kbps, ceil 600kbps )
{
2004 Jul 21
1
tc script stopped working
I''ve used tc in the past for shaping, upon learning of tcng, I redid my
config, and load it using tcc.
I thought this was great, as the new script is much easier to maintain,
and is so much simpler.
The new script was working for about a week, then it stopped working.
I now get this error:
can''t dump subexpression (if_u32.c, unsupported offset sequence - please
try to reorder
2004 May 05
1
Re: [Fwd: Re: Simple HTB setup with tcng]
...ROTO_ICMP ||
> > > ip_tos == 0x10 ||
> > > tcp_sport == 80 ||
> > > tcp_sport == 110 ||
> > > udp_sport == 53 ||
> > > tcp_ack;
> > >
> > > class ( <$medium> ) if tcp_dport == 25;
> > >
> > > class ( <$low> ) if 1;
> > >
> > > htb () { class ( rate LAN_EGRESS kbps ) {
> > >
> > > $ppp = class ( pr...
2017 Jun 05
0
BUG: KASAN: use-after-free in free_old_xmit_skbs
...; > [ 310.306393] ? ip_fragment.constprop.47+0x220/0x220
> > [ 310.307320] ? save_stack_trace+0x1b/0x20
> > [ 310.308133] ? save_stack+0x43/0xd0
> > [ 310.309081] ? kasan_slab_free+0x72/0xc0
> > [ 310.310614] ? kfree_skbmem+0xb6/0x1d0
> > [ 310.311406] ? tcp_ack+0x2730/0x7450
> > [ 310.312167] ? tcp_rcv_established+0xdbb/0x2db0
> > [ 310.312987] ? tcp_v4_do_rcv+0x2bb/0x7a0
> > [ 310.313769] ? __release_sock+0x14a/0x2b0
> > [ 310.314550] ? release_sock+0xa8/0x270
> > [ 310.315330] ? inet_sendmsg+0x111/0x590
> >...
2017 Jun 05
0
BUG: KASAN: use-after-free in free_old_xmit_skbs
...; > [ 310.306393] ? ip_fragment.constprop.47+0x220/0x220
> > [ 310.307320] ? save_stack_trace+0x1b/0x20
> > [ 310.308133] ? save_stack+0x43/0xd0
> > [ 310.309081] ? kasan_slab_free+0x72/0xc0
> > [ 310.310614] ? kfree_skbmem+0xb6/0x1d0
> > [ 310.311406] ? tcp_ack+0x2730/0x7450
> > [ 310.312167] ? tcp_rcv_established+0xdbb/0x2db0
> > [ 310.312987] ? tcp_v4_do_rcv+0x2bb/0x7a0
> > [ 310.313769] ? __release_sock+0x14a/0x2b0
> > [ 310.314550] ? release_sock+0xa8/0x270
> > [ 310.315330] ? inet_sendmsg+0x111/0x590
> >...