From owner-freebsd-net@freebsd.org Sun Dec 18 21:00:58 2016
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Subject: Problem reports for freebsd-net@FreeBSD.org that need special
attention
Date: Sun, 18 Dec 2016 21:00:58 +0000
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To view an individual PR, use:
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=(Bug Id).
The following is a listing of current problems submitted by FreeBSD users,
which need special attention. These represent problem reports covering
all versions including experimental development code and obsolete releases.
Status | Bug Id | Description
------------+-----------+---------------------------------------------------
In Progress | 165622 | [ndis][panic][patch] Unregistered use of FPU in k
In Progress | 203422 | mpd/ppoe not working with re(4) with revision 285
In Progress | 206581 | bxe_ioctl_nvram handler is faulty
New | 204438 | setsockopt() handling of kern.ipc.maxsockbuf limi
New | 205592 | TCP processing in IPSec causes kernel panic
New | 206053 | kqueue support code of netmap causes panic
New | 213410 | [carp] service netif restart causes hang only whe
Open | 148807 | [panic] "panic: sbdrop" and "panic: sbsndptr: soc
Open | 193452 | Dell PowerEdge 210 II -- Kernel panic bce (broadc
Open | 194485 | Userland cannot add IPv6 prefix routes
Open | 194515 | Fatal Trap 12 Kernel with vimage
Open | 199136 | [if_tap] Added down_on_close sysctl variable to t
Open | 202510 | [CARP] advertisements sourced from CARP IP cause
Open | 206544 | sendmsg(2) (sendto(2) too?) can fail with EINVAL;
Open | 211031 | [panic] in ng_uncallout when argument is NULL
Open | 211962 | bxe driver queue soft hangs and flooding tx_soft_
Open | 212018 | Enable IPSEC_NAT_T in GENERIC kernel configuratio
Open | 213257 | Crash in IGB driver with ALTQ
18 problems total for which you should take action.
From owner-freebsd-net@freebsd.org Sun Dec 18 22:23:59 2016
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Subject: [Bug 212872] Fatal trap 12: page fault while... |supervisor read
data, page not present | ipf_frag_lookup | bcmp
Date: Sun, 18 Dec 2016 22:23:57 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D212872
Eugen <androsoveugen@gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |androsoveugen@gmail.com
--- Comment #3 from Eugen <androsoveugen@gmail.com> ---
In my case, the error caused by garbage traffic IpV6
--=20
You are receiving this mail because:
You are the assignee for the bug.=
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Date: Mon, 19 Dec 2016 16:00:48 +0900 (JST)
Message-Id: <20161219.160048.1136181454257627813.hrs@allbsd.org>
To: anderson.ferreira@gmx.com, freebsd-net@freebsd.org
Cc: ae@FreeBSD.org, melifaro@freebsd.org, bz@FreeBSD.org, markj@freebsd.org
Subject: Re: Trouble with ipv6 routing through interface,Re: Trouble with
ipv6 routing through interface
From: Hiroki Sato <hrs@FreeBSD.org>
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"Andrey V. Elsukov" <ae@FreeBSD.org> wrote
in <c5400b5d-a391-c688-f569-d2f129925a89@FreeBSD.org>,<c5400b5d-a391-c688-f569-d2f129925a89@FreeBSD.org>:
ae> On 16.12.2016 03:24, Anderson Soares Ferreira wrote:
ae> > I have a freebsd 11 box running as my network gateway and I’m having
ae> > some trouble trying to route ipv6 packets through an interface with
ae> > only linklocal address. In short, what I’m doing is:
ae> >
ae> > My freebsd gateway has one global scope address on lo0 interface,
ae> > each other interface has only a link local address fe80::1. Static
ae> > routes for the global scope subnets have been created, Each route was
ae> > created using the command:
ae> >
ae> > # route -6 add -net <net address>/64 -interface <dev>
ae> >
ae> > The clients on each subnet have a global scope address and fe80::1 as
ae> > default gateway.
ae> >
ae> > What is happening with this approach is that my gateway can’t reach
ae> > the clients on the subnets. Ping tests from the gateway to the client
ae> > return the error "ping6: sendmsg: No buffer space available”. On the
ae>
ae> Hi,
ae>
ae> this ENOBUFS error is returned from ND6 code. Due to the lack of
ae> prefixes, layer2 doesn't consider that destination address is a
ae> neighbor.
ae>
ae> > other hand, when I try to do a ping from client to gateway, the
ae> > packets from the client are received by the gateway but no response
ae> > is sent. In my tests using a linux gateway with the same approach,
ae> > everything worked fine .
ae>
ae> I'm not sure how this should be fixed.
A FreeBSD router box must have an IPv6 address on each interface if
you want to reach the router from a client (and vice versa).
Currently FreeBSD does not properly support an IPv6 GUA on an
interface and a route of the GUA's prefix on another interface
without an GUA at the same time, which is often seen on a dedicated
router box like Cisco. This is partly because FreeBSD's NDP and
routing table assume that an on-link prefix is interface-local, not
node-local across multiple interfaces.
A practical workaround is using an LLA (i.e. fe80::1 or something)
for communication between the router and the clients.
-- Hiroki
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From: Vincenzo Maffione <v.maffione@gmail.com>
Date: Mon, 19 Dec 2016 12:21:22 +0100
Message-ID: <CA+_eA9jxs3FatSLs8fseb+JSrqWrYkegDHyKA1q2QH=Q4_LbJQ@mail.gmail.com>
Subject: Re: cxgbe's native netmap support broken since r307394
To: Vincenzo Maffione <v.maffione@gmail.com>, Luigi Rizzo <luigi@freebsd.org>,
"freebsd-net@freebsd.org" <freebsd-net@freebsd.org>,
Giuseppe Lettieri <g.lettieri@iet.unipi.it>, np@freebsd.com
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Hi Navdeep,
Indeed, we have reviewed the code, and we think it is ok to
implement nm_os_ifnet_lock() with IFNET_RLOCK(), instead of using
IFNET_WLOCK().
Since IFNET_RLOCK() results into sx_slock(), this should fix the issue.
On FreeBSD, this locking is needed to protect a flag read by nm_iszombie().
However, on Linux the same lock is also needed to protect the call to
the nm_hw_register() callback, so we prefer to have an "unified"
locking scheme, i.e. always calling nm_hw_register under the lock.
Does this make sense to you? Would it be easy for you to make a quick
test by replacing IFNET_WLOCK with IFNET_RLOCK?
Thanks,
Vincenzo
2016-12-17 23:28 GMT+01:00 Navdeep Parhar <np@freebsd.org>:
> Luigi, Vincenzo,
>
> The last major update to netmap (r307394 and followups) broke cxgbe's
> native netmap support. The problem is that netmap_hw_reg now holds an
> rw_lock around the driver's netmap_on/off routines. It has always been
> safe for the driver to sleep during these operations but now it panics
> instead.
>
> Why is IFNET_WLOCK needed here? It seems like a regression to disallow
> sleep on the control path.
>
> Regards,
> Navdeep
>
> begin_synchronized_op with the following non-sleepable locks held:
> exclusive rw ifnet_rw (ifnet_rw) r = 0 (0xffffffff8271d680) locked @
> /root/ws/head/sys/dev/netmap/netmap_freebsd.c:95
> stack backtrace:
> #0 0xffffffff810837a5 at witness_debugger+0xe5
> #1 0xffffffff81084d88 at witness_warn+0x3b8
> #2 0xffffffff83ef2bcc at begin_synchronized_op+0x6c
> #3 0xffffffff83f14beb at cxgbe_netmap_reg+0x5b
> #4 0xffffffff809846f1 at netmap_hw_reg+0x81
> #5 0xffffffff809806de at netmap_do_regif+0x19e
> #6 0xffffffff8098121d at netmap_ioctl+0x7ad
> #7 0xffffffff8098682f at freebsd_netmap_ioctl+0x5f
--
Vincenzo Maffione
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Date: Mon, 19 Dec 2016 19:46:17 +0100
From: Alarig Le Lay <alarig@swordarmor.fr>
To: freebsd-net@freebsd.org
Subject: Avoid using RFC3927 outside of the link
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Hi,
I have a router that is mutli-homed with BGP. One of my peers is using
an RFC3927 address for the connection. If I traceroute to host behind
that route where we use a route via this peer to reply, the ICMP reply
display that link-local IP:
1. AS12876 195-154-86-1.rev.poneytelecom.eu (195.154.86.1) 0.0% 10=
0.9 0.8 0.6 1.1 0.0
2. AS12876 a9k2-49e-s46-3.dc3.poneytelecom.eu (195.154.1.86) 0.0% 10=
0.8 1.1 0.7 2.2 0.5
3. AS12876 pni-th2-a9k2.th2.poneytelecom.eu (195.154.1.75) 0.0% 10=
1.2 1.5 1.1 3.5 0.6
4. AS??? equinix-th2.quantic-telecom.net (195.42.144.192) 0.0% 10=
1.1 1.0 0.9 1.2 0.0
5. AS198507185.132.75.33 0.0% 10=
7.3 7.4 7.2 7.9 0.0
6. AS??? 169.254.1.2 0.0% 10=
7.6 7.6 7.4 7.9 0.0
7. AS204092kaiminus.swordarmor.fr (89.234.186.26) 0.0% 10=
8.1 11.4 7.8 41.5 10.6
Is it possible to avoid this behaviour and reply with the public IP
(89.234.186.1) instead? What I am looking for is an equivalent of `ip
addr change 169.254.1.2/30 scope link` on Linux.
Thanks,
--=20
alarig
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Subject: Re: Avoid using RFC3927 outside of the link
To: Alarig Le Lay <alarig@swordarmor.fr>, freebsd-net@freebsd.org
References: <20161219184617.7yph7isgtgjy4mja@kaiminus>
From: Eugene Grosbein <eugen@grosbein.net>
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Date: Tue, 20 Dec 2016 01:51:17 +0700
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20.12.2016 1:46, Alarig Le Lay ����������:
> Is it possible to avoid this behaviour and reply with the public IP
> (89.234.186.1) instead?
try: sysctl net.inet.icmp.reply_from_interface=1
From owner-freebsd-net@freebsd.org Mon Dec 19 19:05:08 2016
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Date: Mon, 19 Dec 2016 20:05:06 +0100
From: Alarig Le Lay <alarig@swordarmor.fr>
To: Eugene Grosbein <eugen@grosbein.net>
Cc: freebsd-net@freebsd.org
Subject: Re: Avoid using RFC3927 outside of the link
Message-ID: <20161219190506.kc32q7sz3okekup7@kaiminus>
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On Tue Dec 20 01:51:17 2016, Eugene Grosbein wrote:
> 20.12.2016 1:46, Alarig Le Lay =D0=BF=D0=B8=D1=88=D0=B5=D1=82:
>=20
> > Is it possible to avoid this behaviour and reply with the public IP
> > (89.234.186.1) instead?
>=20
> try: sysctl net.inet.icmp.reply_from_interface=3D1
If an AS choose to go to us thought this peer, packets will come in by
this interface, so our router will continue to reply with the apipa IP
for those ASes.
--=20
alarig
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Subject: Re: cxgbe's native netmap support broken since r307394
To: Vincenzo Maffione <v.maffione@gmail.com>
Cc: Luigi Rizzo <luigi@freebsd.org>,
"freebsd-net@freebsd.org" <freebsd-net@freebsd.org>,
Giuseppe Lettieri <g.lettieri@iet.unipi.it>
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IFNET_RLOCK will work, thanks.
Navdeep
On Mon, Dec 19, 2016 at 3:21 AM, Vincenzo Maffione <v.maffione@gmail.com> wrote:
> Hi Navdeep,
>
> Indeed, we have reviewed the code, and we think it is ok to
> implement nm_os_ifnet_lock() with IFNET_RLOCK(), instead of using
> IFNET_WLOCK().
> Since IFNET_RLOCK() results into sx_slock(), this should fix the issue.
>
> On FreeBSD, this locking is needed to protect a flag read by nm_iszombie().
> However, on Linux the same lock is also needed to protect the call to
> the nm_hw_register() callback, so we prefer to have an "unified"
> locking scheme, i.e. always calling nm_hw_register under the lock.
>
> Does this make sense to you? Would it be easy for you to make a quick
> test by replacing IFNET_WLOCK with IFNET_RLOCK?
>
> Thanks,
> Vincenzo
>
> 2016-12-17 23:28 GMT+01:00 Navdeep Parhar <np@freebsd.org>:
>> Luigi, Vincenzo,
>>
>> The last major update to netmap (r307394 and followups) broke cxgbe's
>> native netmap support. The problem is that netmap_hw_reg now holds an
>> rw_lock around the driver's netmap_on/off routines. It has always been
>> safe for the driver to sleep during these operations but now it panics
>> instead.
>>
>> Why is IFNET_WLOCK needed here? It seems like a regression to disallow
>> sleep on the control path.
>>
>> Regards,
>> Navdeep
>>
>> begin_synchronized_op with the following non-sleepable locks held:
>> exclusive rw ifnet_rw (ifnet_rw) r = 0 (0xffffffff8271d680) locked @
>> /root/ws/head/sys/dev/netmap/netmap_freebsd.c:95
>> stack backtrace:
>> #0 0xffffffff810837a5 at witness_debugger+0xe5
>> #1 0xffffffff81084d88 at witness_warn+0x3b8
>> #2 0xffffffff83ef2bcc at begin_synchronized_op+0x6c
>> #3 0xffffffff83f14beb at cxgbe_netmap_reg+0x5b
>> #4 0xffffffff809846f1 at netmap_hw_reg+0x81
>> #5 0xffffffff809806de at netmap_do_regif+0x19e
>> #6 0xffffffff8098121d at netmap_ioctl+0x7ad
>> #7 0xffffffff8098682f at freebsd_netmap_ioctl+0x5f
>
>
>
> --
> Vincenzo Maffione
> _______________________________________________
> freebsd-net@freebsd.org mailing list
> https://lists.freebsd.org/mailman/listinfo/freebsd-net
> To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org"
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Subject: Re: Avoid using RFC3927 outside of the link
To: Alarig Le Lay <alarig@swordarmor.fr>
References: <20161219184617.7yph7isgtgjy4mja@kaiminus>
<58582C25.7090806@grosbein.net> <20161219190506.kc32q7sz3okekup7@kaiminus>
Cc: freebsd-net@freebsd.org
From: Eugene Grosbein <eugen@grosbein.net>
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Date: Tue, 20 Dec 2016 02:34:29 +0700
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20.12.2016 2:05, Alarig Le Lay ����������:
> On Tue Dec 20 01:51:17 2016, Eugene Grosbein wrote:
>> 20.12.2016 1:46, Alarig Le Lay ����������:
>>
>>> Is it possible to avoid this behaviour and reply with the public IP
>>> (89.234.186.1) instead?
>>
>> try: sysctl net.inet.icmp.reply_from_interface=1
>
> If an AS choose to go to us thought this peer, packets will come in by
> this interface, so our router will continue to reply with the apipa IP
> for those ASes.
Well, you can always use brute force instead:
ipfw nat 169 config reset ip 89.234.186.1 && \
ipfw add 60 nat 169 ip from 169.254.0.0/16 to any out xmit igb0
That's ugly but works.
From owner-freebsd-net@freebsd.org Mon Dec 19 19:36:07 2016
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Date: Mon, 19 Dec 2016 11:36:06 -0800
From: hiren panchasara <hiren@strugglingcoder.info>
To: "Andrey V. Elsukov" <bu7cher@yandex.ru>
Cc: "Eugene M. Zheganin" <emz@norma.perm.ru>,
freebsd-net <freebsd-net@freebsd.org>, freebsd-stable@freebsd.org
Subject: Re: sonewconn: pcb [...]: Listen queue overflow to human-readable form
Message-ID: <20161219193606.GQ82166@strugglingcoder.info>
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On 12/16/16 at 11:20P, Andrey V. Elsukov wrote:
> On 15.12.2016 20:51, hiren panchasara wrote:
> > On 12/15/16 at 05:23P, Eugene M. Zheganin wrote:
> >> Hi.
> >>
> >> Sometimes on one of my servers I got dmesg full of
> >>
> >> sonewconn: pcb 0xfffff80373aec000: Listen queue overflow: 49 already in
> >> queue awaiting acceptance (6 occurrences)
> > [skip]
> >>
> >> but at the time of investigation the socket is already closed and lsof
> >> cannot show me the owner. I wonder if the kernel can itself decode this
> >> output and write it in the human-readable form ?
> >=20
> > I have this not-quite-correct patch that may help you. (If you follow t=
he
> > discussion there, you'd know why its not complete.)=20
> >=20
> > https://lists.freebsd.org/pipermail/freebsd-net/2014-March/038074.html
>=20
> Hi Hiren,
>=20
> I think the check for socket's domain should be enough?
>=20
>=20
> --=20
> WBR, Andrey V. Elsukov
> Index: sys/kern/uipc_socket.c
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
> --- sys/kern/uipc_socket.c (revision 309834)
> +++ sys/kern/uipc_socket.c (working copy)
> @@ -139,6 +139,7 @@ __FBSDID("$FreeBSD$");
> #include <sys/jail.h>
> #include <sys/syslog.h>
> #include <netinet/in.h>
> +#include <netinet/in_pcb.h>
> =20
> #include <net/vnet.h>
> =20
> @@ -577,10 +578,15 @@ sonewconn(struct socket *head, int connstatus)
> overcount++;
> =20
> if (ratecheck(&lastover, &overinterval)) {
> - log(LOG_DEBUG, "%s: pcb %p: Listen queue overflow: "
> - "%i already in queue awaiting acceptance "
> - "(%d occurrences)\n",
> - __func__, head->so_pcb, head->so_qlen, overcount);
> + if (INP_CHECK_SOCKAF(head, AF_INET) ||
> + INP_CHECK_SOCKAF(head, AF_INET6))
> + over =3D ntohs(sotoinpcb(head)->inp_lport);
> + else
> + over =3D 0;
> + log(LOG_DEBUG, "%s: pcb %p: Listen queue overflow on "
> + "port %d: %i already in queue awaiting acceptance "
> + "(%d occurrences)\n", __func__, head->so_pcb,
> + over, head->so_qlen, overcount);
> =20
> overcount =3D 0;
> }
Andrey,
Thanks, this seems correct to me. :-)
Cheers,
Hiren
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Date: Mon, 19 Dec 2016 22:01:51 +0100
From: Alarig Le Lay <alarig@swordarmor.fr>
To: Eugene Grosbein <eugen@grosbein.net>
Cc: freebsd-net@freebsd.org
Subject: Re: Avoid using RFC3927 outside of the link
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On Tue Dec 20 02:34:29 2016, Eugene Grosbein wrote:
> Well, you can always use brute force instead:
>=20
> ipfw nat 169 config reset ip 89.234.186.1 && \
> ipfw add 60 nat 169 ip from 169.254.0.0/16 to any out xmit igb0
>=20
> That's ugly but works.
I will work just by side effect: by doing this, I will send BGP packets
=66rom 89.234.186.1, which is an IP than the peer learned by BGP. This will
create a recursive loop, and the session will be shut. So, no more
traffic will transit through this interface, and this IP will not be
displayed anymore :p
--=20
alarig
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Subject: Re: Avoid using RFC3927 outside of the link
To: freebsd-net@freebsd.org
References: <20161219184617.7yph7isgtgjy4mja@kaiminus>
<58582C25.7090806@grosbein.net> <20161219190506.kc32q7sz3okekup7@kaiminus>
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From: Joe Holden <mail@m.jwh.me.uk>
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On 19/12/2016 21:01, Alarig Le Lay wrote:
> On Tue Dec 20 02:34:29 2016, Eugene Grosbein wrote:
>> Well, you can always use brute force instead:
>>
>> ipfw nat 169 config reset ip 89.234.186.1 && \
>> ipfw add 60 nat 169 ip from 169.254.0.0/16 to any out xmit igb0
>>
>> That's ugly but works.
>
> I will work just by side effect: by doing this, I will send BGP packets
> from 89.234.186.1, which is an IP than the peer learned by BGP. This will
> create a recursive loop, and the session will be shut. So, no more
> traffic will transit through this interface, and this IP will not be
> displayed anymore :p
>
Use valid addressing and optionally, working config, there is no problem
here.
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Subject: Re: Avoid using RFC3927 outside of the link
To: Alarig Le Lay <alarig@swordarmor.fr>
References: <20161219184617.7yph7isgtgjy4mja@kaiminus>
<58582C25.7090806@grosbein.net> <20161219190506.kc32q7sz3okekup7@kaiminus>
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From: Eugene Grosbein <eugen@grosbein.net>
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20.12.2016 4:01, Alarig Le Lay ����������:
> On Tue Dec 20 02:34:29 2016, Eugene Grosbein wrote:
>> Well, you can always use brute force instead:
>>
>> ipfw nat 169 config reset ip 89.234.186.1 && \
>> ipfw add 60 nat 169 ip from 169.254.0.0/16 to any out xmit igb0
>>
>> That's ugly but works.
>
> I will work just by side effect: by doing this, I will send BGP packets
> from 89.234.186.1, which is an IP than the peer learned by BGP. This will
> create a recursive loop, and the session will be shut. So, no more
> traffic will transit through this interface, and this IP will not be
> displayed anymore :p
You could also use another public IP as primary address for interface in question
and an address from 169.254.0.0/16 as secondary one. BGP will still work and
kernel/ICMP will use public IP.
From owner-freebsd-net@freebsd.org Tue Dec 20 09:25:38 2016
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From: Vincenzo Maffione <v.maffione@gmail.com>
Date: Tue, 20 Dec 2016 10:25:36 +0100
Message-ID: <CA+_eA9iUOZ9JLyx3bbDUZVc=cR6SqxReoOLRHUYQy-BU6Eb-UQ@mail.gmail.com>
Subject: Re: cxgbe's native netmap support broken since r307394
To: Navdeep Parhar <np@freebsd.org>
Cc: Luigi Rizzo <luigi@freebsd.org>,
"freebsd-net@freebsd.org" <freebsd-net@freebsd.org>,
Giuseppe Lettieri <g.lettieri@iet.unipi.it>
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Ok, applied to the netmap github repo.
This fix will be published when Luigi does the next commit on FreeBSD.
Cheers,
Vincenzo
2016-12-19 20:05 GMT+01:00 Navdeep Parhar <np@freebsd.org>:
> IFNET_RLOCK will work, thanks.
>
> Navdeep
>
> On Mon, Dec 19, 2016 at 3:21 AM, Vincenzo Maffione <v.maffione@gmail.com> wrote:
>> Hi Navdeep,
>>
>> Indeed, we have reviewed the code, and we think it is ok to
>> implement nm_os_ifnet_lock() with IFNET_RLOCK(), instead of using
>> IFNET_WLOCK().
>> Since IFNET_RLOCK() results into sx_slock(), this should fix the issue.
>>
>> On FreeBSD, this locking is needed to protect a flag read by nm_iszombie().
>> However, on Linux the same lock is also needed to protect the call to
>> the nm_hw_register() callback, so we prefer to have an "unified"
>> locking scheme, i.e. always calling nm_hw_register under the lock.
>>
>> Does this make sense to you? Would it be easy for you to make a quick
>> test by replacing IFNET_WLOCK with IFNET_RLOCK?
>>
>> Thanks,
>> Vincenzo
>>
>> 2016-12-17 23:28 GMT+01:00 Navdeep Parhar <np@freebsd.org>:
>>> Luigi, Vincenzo,
>>>
>>> The last major update to netmap (r307394 and followups) broke cxgbe's
>>> native netmap support. The problem is that netmap_hw_reg now holds an
>>> rw_lock around the driver's netmap_on/off routines. It has always been
>>> safe for the driver to sleep during these operations but now it panics
>>> instead.
>>>
>>> Why is IFNET_WLOCK needed here? It seems like a regression to disallow
>>> sleep on the control path.
>>>
>>> Regards,
>>> Navdeep
>>>
>>> begin_synchronized_op with the following non-sleepable locks held:
>>> exclusive rw ifnet_rw (ifnet_rw) r = 0 (0xffffffff8271d680) locked @
>>> /root/ws/head/sys/dev/netmap/netmap_freebsd.c:95
>>> stack backtrace:
>>> #0 0xffffffff810837a5 at witness_debugger+0xe5
>>> #1 0xffffffff81084d88 at witness_warn+0x3b8
>>> #2 0xffffffff83ef2bcc at begin_synchronized_op+0x6c
>>> #3 0xffffffff83f14beb at cxgbe_netmap_reg+0x5b
>>> #4 0xffffffff809846f1 at netmap_hw_reg+0x81
>>> #5 0xffffffff809806de at netmap_do_regif+0x19e
>>> #6 0xffffffff8098121d at netmap_ioctl+0x7ad
>>> #7 0xffffffff8098682f at freebsd_netmap_ioctl+0x5f
>>
>>
>>
>> --
>> Vincenzo Maffione
>> _______________________________________________
>> freebsd-net@freebsd.org mailing list
>> https://lists.freebsd.org/mailman/listinfo/freebsd-net
>> To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org"
--
Vincenzo Maffione
From owner-freebsd-net@freebsd.org Tue Dec 20 20:45:16 2016
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From: Adrian Chadd <adrian.chadd@gmail.com>
Date: Tue, 20 Dec 2016 12:45:13 -0800
Message-ID: <CAJ-VmomPW7+knAKbaLYjKXfgd=xAH3bYZi_LoxtNf5cuejJeJw@mail.gmail.com>
Subject: Re: cxgbe's native netmap support broken since r307394
To: Vincenzo Maffione <v.maffione@gmail.com>
Cc: Navdeep Parhar <np@freebsd.org>,
"freebsd-net@freebsd.org" <freebsd-net@freebsd.org>,
Luigi Rizzo <luigi@freebsd.org>, Giuseppe Lettieri <g.lettieri@iet.unipi.it>
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hi,
What's the commit? We should get it into -HEAD asap.
-adrian
On 20 December 2016 at 01:25, Vincenzo Maffione <v.maffione@gmail.com> wrote:
> Ok, applied to the netmap github repo.
> This fix will be published when Luigi does the next commit on FreeBSD.
>
> Cheers,
> Vincenzo
>
> 2016-12-19 20:05 GMT+01:00 Navdeep Parhar <np@freebsd.org>:
>> IFNET_RLOCK will work, thanks.
>>
>> Navdeep
>>
>> On Mon, Dec 19, 2016 at 3:21 AM, Vincenzo Maffione <v.maffione@gmail.com> wrote:
>>> Hi Navdeep,
>>>
>>> Indeed, we have reviewed the code, and we think it is ok to
>>> implement nm_os_ifnet_lock() with IFNET_RLOCK(), instead of using
>>> IFNET_WLOCK().
>>> Since IFNET_RLOCK() results into sx_slock(), this should fix the issue.
>>>
>>> On FreeBSD, this locking is needed to protect a flag read by nm_iszombie().
>>> However, on Linux the same lock is also needed to protect the call to
>>> the nm_hw_register() callback, so we prefer to have an "unified"
>>> locking scheme, i.e. always calling nm_hw_register under the lock.
>>>
>>> Does this make sense to you? Would it be easy for you to make a quick
>>> test by replacing IFNET_WLOCK with IFNET_RLOCK?
>>>
>>> Thanks,
>>> Vincenzo
>>>
>>> 2016-12-17 23:28 GMT+01:00 Navdeep Parhar <np@freebsd.org>:
>>>> Luigi, Vincenzo,
>>>>
>>>> The last major update to netmap (r307394 and followups) broke cxgbe's
>>>> native netmap support. The problem is that netmap_hw_reg now holds an
>>>> rw_lock around the driver's netmap_on/off routines. It has always been
>>>> safe for the driver to sleep during these operations but now it panics
>>>> instead.
>>>>
>>>> Why is IFNET_WLOCK needed here? It seems like a regression to disallow
>>>> sleep on the control path.
>>>>
>>>> Regards,
>>>> Navdeep
>>>>
>>>> begin_synchronized_op with the following non-sleepable locks held:
>>>> exclusive rw ifnet_rw (ifnet_rw) r = 0 (0xffffffff8271d680) locked @
>>>> /root/ws/head/sys/dev/netmap/netmap_freebsd.c:95
>>>> stack backtrace:
>>>> #0 0xffffffff810837a5 at witness_debugger+0xe5
>>>> #1 0xffffffff81084d88 at witness_warn+0x3b8
>>>> #2 0xffffffff83ef2bcc at begin_synchronized_op+0x6c
>>>> #3 0xffffffff83f14beb at cxgbe_netmap_reg+0x5b
>>>> #4 0xffffffff809846f1 at netmap_hw_reg+0x81
>>>> #5 0xffffffff809806de at netmap_do_regif+0x19e
>>>> #6 0xffffffff8098121d at netmap_ioctl+0x7ad
>>>> #7 0xffffffff8098682f at freebsd_netmap_ioctl+0x5f
>>>
>>>
>>>
>>> --
>>> Vincenzo Maffione
>>> _______________________________________________
>>> freebsd-net@freebsd.org mailing list
>>> https://lists.freebsd.org/mailman/listinfo/freebsd-net
>>> To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org"
>
>
>
> --
> Vincenzo Maffione
> _______________________________________________
> freebsd-net@freebsd.org mailing list
> https://lists.freebsd.org/mailman/listinfo/freebsd-net
> To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org"
From owner-freebsd-net@freebsd.org Wed Dec 21 12:59:32 2016
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From: bugzilla-noreply@freebsd.org
To: freebsd-net@FreeBSD.org
Subject: [Bug 212283] oversized IP datagrams on raw socket with IP_RAWOUTPUT
hang network interface drivers
Date: Wed, 21 Dec 2016 12:59:31 +0000
X-Bugzilla-Reason: AssignedTo
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X-Bugzilla-Component: kern
X-Bugzilla-Version: 11.0-STABLE
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D212283
--- Comment #19 from Mathieu Arnold <mat@FreeBSD.org> ---
Still a problem with 11.0-RELEASE-p5.
--=20
You are receiving this mail because:
You are the assignee for the bug.=
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From: Harry Schmalzbauer <freebsd@omnilan.de>
Organization: OmniLAN
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CC: Vincenzo Maffione <v.maffione@gmail.com>
Subject: qualified vale(4) uplink interface clones
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Dear netmap gurus,
I'm getting different crashes if using vale(4) as a drop in replacement
for if_bridge(4).
Before collecting dumps I'd like to know if the setup, which I need to
keep (including a MTU of 9000 bytes), is meant to be supported at all
with netmap.
Usually I have two GbE ports forming one lagg(4) interface, like this:
lagg0mplx: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST>
metric 0 mtu 9000
���
laggproto lacp lagghash l2,l3,l4
laggport: igb0 flags=1c<ACTIVE,COLLECTING,DISTRIBUTING>
laggport: igb1 flags=1c<ACTIVE,COLLECTING,DISTRIBUTING>
Then I have lots of cloned VLAN-specific interfaces (utilizing Kawela's
hardware VLAN filter):
vldmz: flags=8942<BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0
mtu 9000
���
vlan: 1 vlanpcp: 0 parent interface: lagg0mplx
groups: vlan
vlvnl: flags=8942<BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0
mtu 9000
���
vlan: 2 vlanpcp: 0 parent interface: lagg0mplx
groups: vlan
vlegn: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric
0 mtu 9000
���
vlan: 3 vlanpcp: 0 parent interface: lagg0mplx
groups: vlan
These are then uplink interfaces for different if_bridge(4)es.
Now I can use 'vale-ctl -h vale0:vlegn' , but as soon as there's any
traffic over lagg0mplx (even not related to the vlegn cloned interface),
the machine crashes.
Is somebody interested in dumps?
Or is this a too weird setup?
Thanks,
-harry
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From: Vincenzo Maffione <v.maffione@gmail.com>
Date: Wed, 21 Dec 2016 20:15:14 +0100
Message-ID: <CA+_eA9hAjK-i762t=ZCKqzrk5EDeEJM9gf+OAmDJqyUGrAYcFg@mail.gmail.com>
Subject: Re: cxgbe's native netmap support broken since r307394
To: Adrian Chadd <adrian.chadd@gmail.com>
Cc: Navdeep Parhar <np@freebsd.org>,
"freebsd-net@freebsd.org" <freebsd-net@freebsd.org>,
Luigi Rizzo <luigi@freebsd.org>, Giuseppe Lettieri <g.lettieri@iet.unipi.it>
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Hi,
There is no commit related to that in the FreeBSD svn or git.
The fix has been published to the github netmap repository here
(branch master): https://github.com/luigirizzo/netmap
What we should do is to import all the recent updates from the github
into HEAD. I can prepare a patch for HEAD, if you wish. Just let me
know.
Cheers,
Vincenzo
2016-12-20 21:45 GMT+01:00 Adrian Chadd <adrian.chadd@gmail.com>:
> hi,
>
> What's the commit? We should get it into -HEAD asap.
>
>
> -adrian
>
>
> On 20 December 2016 at 01:25, Vincenzo Maffione <v.maffione@gmail.com> wrote:
>> Ok, applied to the netmap github repo.
>> This fix will be published when Luigi does the next commit on FreeBSD.
>>
>> Cheers,
>> Vincenzo
>>
>> 2016-12-19 20:05 GMT+01:00 Navdeep Parhar <np@freebsd.org>:
>>> IFNET_RLOCK will work, thanks.
>>>
>>> Navdeep
>>>
>>> On Mon, Dec 19, 2016 at 3:21 AM, Vincenzo Maffione <v.maffione@gmail.com> wrote:
>>>> Hi Navdeep,
>>>>
>>>> Indeed, we have reviewed the code, and we think it is ok to
>>>> implement nm_os_ifnet_lock() with IFNET_RLOCK(), instead of using
>>>> IFNET_WLOCK().
>>>> Since IFNET_RLOCK() results into sx_slock(), this should fix the issue.
>>>>
>>>> On FreeBSD, this locking is needed to protect a flag read by nm_iszombie().
>>>> However, on Linux the same lock is also needed to protect the call to
>>>> the nm_hw_register() callback, so we prefer to have an "unified"
>>>> locking scheme, i.e. always calling nm_hw_register under the lock.
>>>>
>>>> Does this make sense to you? Would it be easy for you to make a quick
>>>> test by replacing IFNET_WLOCK with IFNET_RLOCK?
>>>>
>>>> Thanks,
>>>> Vincenzo
>>>>
>>>> 2016-12-17 23:28 GMT+01:00 Navdeep Parhar <np@freebsd.org>:
>>>>> Luigi, Vincenzo,
>>>>>
>>>>> The last major update to netmap (r307394 and followups) broke cxgbe's
>>>>> native netmap support. The problem is that netmap_hw_reg now holds an
>>>>> rw_lock around the driver's netmap_on/off routines. It has always been
>>>>> safe for the driver to sleep during these operations but now it panics
>>>>> instead.
>>>>>
>>>>> Why is IFNET_WLOCK needed here? It seems like a regression to disallow
>>>>> sleep on the control path.
>>>>>
>>>>> Regards,
>>>>> Navdeep
>>>>>
>>>>> begin_synchronized_op with the following non-sleepable locks held:
>>>>> exclusive rw ifnet_rw (ifnet_rw) r = 0 (0xffffffff8271d680) locked @
>>>>> /root/ws/head/sys/dev/netmap/netmap_freebsd.c:95
>>>>> stack backtrace:
>>>>> #0 0xffffffff810837a5 at witness_debugger+0xe5
>>>>> #1 0xffffffff81084d88 at witness_warn+0x3b8
>>>>> #2 0xffffffff83ef2bcc at begin_synchronized_op+0x6c
>>>>> #3 0xffffffff83f14beb at cxgbe_netmap_reg+0x5b
>>>>> #4 0xffffffff809846f1 at netmap_hw_reg+0x81
>>>>> #5 0xffffffff809806de at netmap_do_regif+0x19e
>>>>> #6 0xffffffff8098121d at netmap_ioctl+0x7ad
>>>>> #7 0xffffffff8098682f at freebsd_netmap_ioctl+0x5f
>>>>
>>>>
>>>>
>>>> --
>>>> Vincenzo Maffione
>>>> _______________________________________________
>>>> freebsd-net@freebsd.org mailing list
>>>> https://lists.freebsd.org/mailman/listinfo/freebsd-net
>>>> To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org"
>>
>>
>>
>> --
>> Vincenzo Maffione
>> _______________________________________________
>> freebsd-net@freebsd.org mailing list
>> https://lists.freebsd.org/mailman/listinfo/freebsd-net
>> To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org"
--
Vincenzo Maffione
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From: Luigi Rizzo <rizzo@iet.unipi.it>
Date: Wed, 21 Dec 2016 11:30:56 -0800
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Subject: Re: cxgbe's native netmap support broken since r307394
To: Vincenzo Maffione <v.maffione@gmail.com>
Cc: Adrian Chadd <adrian.chadd@gmail.com>, Navdeep Parhar <np@freebsd.org>,
"freebsd-net@freebsd.org" <freebsd-net@freebsd.org>,
Luigi Rizzo <luigi@freebsd.org>,
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On Wed, Dec 21, 2016 at 11:15 AM, Vincenzo Maffione
<v.maffione@gmail.com> wrote:
> Hi,
> There is no commit related to that in the FreeBSD svn or git.
>
> The fix has been published to the github netmap repository here
> (branch master): https://github.com/luigirizzo/netmap
>
> What we should do is to import all the recent updates from the github
> into HEAD. I can prepare a patch for HEAD, if you wish. Just let me
> know.
I just checked and the diff between FreeBSD head and netmap head
in github is almost 3k lines due to a lot of recent refactoring.
So, if there is an easy way to extract just the locking change that would
be preferable as an interim solution.
cheers
luigi
>
> Cheers,
> Vincenzo
>
>
> 2016-12-20 21:45 GMT+01:00 Adrian Chadd <adrian.chadd@gmail.com>:
>> hi,
>>
>> What's the commit? We should get it into -HEAD asap.
>>
>>
>> -adrian
>>
>>
>> On 20 December 2016 at 01:25, Vincenzo Maffione <v.maffione@gmail.com> wrote:
>>> Ok, applied to the netmap github repo.
>>> This fix will be published when Luigi does the next commit on FreeBSD.
>>>
>>> Cheers,
>>> Vincenzo
>>>
>>> 2016-12-19 20:05 GMT+01:00 Navdeep Parhar <np@freebsd.org>:
>>>> IFNET_RLOCK will work, thanks.
>>>>
>>>> Navdeep
>>>>
>>>> On Mon, Dec 19, 2016 at 3:21 AM, Vincenzo Maffione <v.maffione@gmail.com> wrote:
>>>>> Hi Navdeep,
>>>>>
>>>>> Indeed, we have reviewed the code, and we think it is ok to
>>>>> implement nm_os_ifnet_lock() with IFNET_RLOCK(), instead of using
>>>>> IFNET_WLOCK().
>>>>> Since IFNET_RLOCK() results into sx_slock(), this should fix the issue.
>>>>>
>>>>> On FreeBSD, this locking is needed to protect a flag read by nm_iszombie().
>>>>> However, on Linux the same lock is also needed to protect the call to
>>>>> the nm_hw_register() callback, so we prefer to have an "unified"
>>>>> locking scheme, i.e. always calling nm_hw_register under the lock.
>>>>>
>>>>> Does this make sense to you? Would it be easy for you to make a quick
>>>>> test by replacing IFNET_WLOCK with IFNET_RLOCK?
>>>>>
>>>>> Thanks,
>>>>> Vincenzo
>>>>>
>>>>> 2016-12-17 23:28 GMT+01:00 Navdeep Parhar <np@freebsd.org>:
>>>>>> Luigi, Vincenzo,
>>>>>>
>>>>>> The last major update to netmap (r307394 and followups) broke cxgbe's
>>>>>> native netmap support. The problem is that netmap_hw_reg now holds an
>>>>>> rw_lock around the driver's netmap_on/off routines. It has always been
>>>>>> safe for the driver to sleep during these operations but now it panics
>>>>>> instead.
>>>>>>
>>>>>> Why is IFNET_WLOCK needed here? It seems like a regression to disallow
>>>>>> sleep on the control path.
>>>>>>
>>>>>> Regards,
>>>>>> Navdeep
>>>>>>
>>>>>> begin_synchronized_op with the following non-sleepable locks held:
>>>>>> exclusive rw ifnet_rw (ifnet_rw) r = 0 (0xffffffff8271d680) locked @
>>>>>> /root/ws/head/sys/dev/netmap/netmap_freebsd.c:95
>>>>>> stack backtrace:
>>>>>> #0 0xffffffff810837a5 at witness_debugger+0xe5
>>>>>> #1 0xffffffff81084d88 at witness_warn+0x3b8
>>>>>> #2 0xffffffff83ef2bcc at begin_synchronized_op+0x6c
>>>>>> #3 0xffffffff83f14beb at cxgbe_netmap_reg+0x5b
>>>>>> #4 0xffffffff809846f1 at netmap_hw_reg+0x81
>>>>>> #5 0xffffffff809806de at netmap_do_regif+0x19e
>>>>>> #6 0xffffffff8098121d at netmap_ioctl+0x7ad
>>>>>> #7 0xffffffff8098682f at freebsd_netmap_ioctl+0x5f
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Vincenzo Maffione
>>>>> _______________________________________________
>>>>> freebsd-net@freebsd.org mailing list
>>>>> https://lists.freebsd.org/mailman/listinfo/freebsd-net
>>>>> To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org"
>>>
>>>
>>>
>>> --
>>> Vincenzo Maffione
>>> _______________________________________________
>>> freebsd-net@freebsd.org mailing list
>>> https://lists.freebsd.org/mailman/listinfo/freebsd-net
>>> To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org"
>
>
>
> --
> Vincenzo Maffione
--
-----------------------------------------+-------------------------------
Prof. Luigi RIZZO, rizzo@iet.unipi.it . Dip. di Ing. dell'Informazione
http://www.iet.unipi.it/~luigi/ . Universita` di Pisa
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Subject: [Bug 213115] ifconfig ipfw create inside a VNET jail leads to kernel
Panic
Date: Wed, 21 Dec 2016 21:16:09 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D213115
Ed Maste <emaste@freebsd.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|New |Open
--- Comment #3 from Ed Maste <emaste@freebsd.org> ---
Can you test with 11.0?
--=20
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From: Vincenzo Maffione <v.maffione@gmail.com>
Date: Wed, 21 Dec 2016 22:37:42 +0100
Message-ID: <CA+_eA9jGaUJPX9b=8r8xZ4bmryqbFnNogbb2KEOCRcXNpqBmrg@mail.gmail.com>
Subject: Re: cxgbe's native netmap support broken since r307394
To: Luigi Rizzo <rizzo@iet.unipi.it>
Cc: Adrian Chadd <adrian.chadd@gmail.com>, Navdeep Parhar <np@freebsd.org>,
"freebsd-net@freebsd.org" <freebsd-net@freebsd.org>,
Luigi Rizzo <luigi@freebsd.org>,
Giuseppe Lettieri <g.lettieri@iet.unipi.it>
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Hi Luigi,
I attached a minimal change containing two fixes:
- change IFNET_WLOCK into IFNET_RLOCK, to fix the cxgbe issue related
to this thread
- use the proper locking functions for the "worker_lock", unrelated
but needed to avoid the O.S. to trap because of a mismatch between
MTX_SPIN and MTX_DEF.
Cheers,
Vincenzo
2016-12-21 20:30 GMT+01:00 Luigi Rizzo <rizzo@iet.unipi.it>:
> On Wed, Dec 21, 2016 at 11:15 AM, Vincenzo Maffione
> <v.maffione@gmail.com> wrote:
>> Hi,
>> There is no commit related to that in the FreeBSD svn or git.
>>
>> The fix has been published to the github netmap repository here
>> (branch master): https://github.com/luigirizzo/netmap
>>
>> What we should do is to import all the recent updates from the github
>> into HEAD. I can prepare a patch for HEAD, if you wish. Just let me
>> know.
>
> I just checked and the diff between FreeBSD head and netmap head
> in github is almost 3k lines due to a lot of recent refactoring.
> So, if there is an easy way to extract just the locking change that would
> be preferable as an interim solution.
>
> cheers
> luigi
>
>>
>> Cheers,
>> Vincenzo
>>
>>
>> 2016-12-20 21:45 GMT+01:00 Adrian Chadd <adrian.chadd@gmail.com>:
>>> hi,
>>>
>>> What's the commit? We should get it into -HEAD asap.
>>>
>>>
>>> -adrian
>>>
>>>
>>> On 20 December 2016 at 01:25, Vincenzo Maffione <v.maffione@gmail.com> wrote:
>>>> Ok, applied to the netmap github repo.
>>>> This fix will be published when Luigi does the next commit on FreeBSD.
>>>>
>>>> Cheers,
>>>> Vincenzo
>>>>
>>>> 2016-12-19 20:05 GMT+01:00 Navdeep Parhar <np@freebsd.org>:
>>>>> IFNET_RLOCK will work, thanks.
>>>>>
>>>>> Navdeep
>>>>>
>>>>> On Mon, Dec 19, 2016 at 3:21 AM, Vincenzo Maffione <v.maffione@gmail.com> wrote:
>>>>>> Hi Navdeep,
>>>>>>
>>>>>> Indeed, we have reviewed the code, and we think it is ok to
>>>>>> implement nm_os_ifnet_lock() with IFNET_RLOCK(), instead of using
>>>>>> IFNET_WLOCK().
>>>>>> Since IFNET_RLOCK() results into sx_slock(), this should fix the issue.
>>>>>>
>>>>>> On FreeBSD, this locking is needed to protect a flag read by nm_iszombie().
>>>>>> However, on Linux the same lock is also needed to protect the call to
>>>>>> the nm_hw_register() callback, so we prefer to have an "unified"
>>>>>> locking scheme, i.e. always calling nm_hw_register under the lock.
>>>>>>
>>>>>> Does this make sense to you? Would it be easy for you to make a quick
>>>>>> test by replacing IFNET_WLOCK with IFNET_RLOCK?
>>>>>>
>>>>>> Thanks,
>>>>>> Vincenzo
>>>>>>
>>>>>> 2016-12-17 23:28 GMT+01:00 Navdeep Parhar <np@freebsd.org>:
>>>>>>> Luigi, Vincenzo,
>>>>>>>
>>>>>>> The last major update to netmap (r307394 and followups) broke cxgbe's
>>>>>>> native netmap support. The problem is that netmap_hw_reg now holds an
>>>>>>> rw_lock around the driver's netmap_on/off routines. It has always been
>>>>>>> safe for the driver to sleep during these operations but now it panics
>>>>>>> instead.
>>>>>>>
>>>>>>> Why is IFNET_WLOCK needed here? It seems like a regression to disallow
>>>>>>> sleep on the control path.
>>>>>>>
>>>>>>> Regards,
>>>>>>> Navdeep
>>>>>>>
>>>>>>> begin_synchronized_op with the following non-sleepable locks held:
>>>>>>> exclusive rw ifnet_rw (ifnet_rw) r = 0 (0xffffffff8271d680) locked @
>>>>>>> /root/ws/head/sys/dev/netmap/netmap_freebsd.c:95
>>>>>>> stack backtrace:
>>>>>>> #0 0xffffffff810837a5 at witness_debugger+0xe5
>>>>>>> #1 0xffffffff81084d88 at witness_warn+0x3b8
>>>>>>> #2 0xffffffff83ef2bcc at begin_synchronized_op+0x6c
>>>>>>> #3 0xffffffff83f14beb at cxgbe_netmap_reg+0x5b
>>>>>>> #4 0xffffffff809846f1 at netmap_hw_reg+0x81
>>>>>>> #5 0xffffffff809806de at netmap_do_regif+0x19e
>>>>>>> #6 0xffffffff8098121d at netmap_ioctl+0x7ad
>>>>>>> #7 0xffffffff8098682f at freebsd_netmap_ioctl+0x5f
>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> Vincenzo Maffione
>>>>>> _______________________________________________
>>>>>> freebsd-net@freebsd.org mailing list
>>>>>> https://lists.freebsd.org/mailman/listinfo/freebsd-net
>>>>>> To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org"
>>>>
>>>>
>>>>
>>>> --
>>>> Vincenzo Maffione
>>>> _______________________________________________
>>>> freebsd-net@freebsd.org mailing list
>>>> https://lists.freebsd.org/mailman/listinfo/freebsd-net
>>>> To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org"
>>
>>
>>
>> --
>> Vincenzo Maffione
>
>
>
> --
> -----------------------------------------+-------------------------------
> Prof. Luigi RIZZO, rizzo@iet.unipi.it . Dip. di Ing. dell'Informazione
> http://www.iet.unipi.it/~luigi/ . Universita` di Pisa
> TEL +39-050-2217533 . via Diotisalvi 2
> Mobile +39-338-6809875 . 56122 PISA (Italy)
> -----------------------------------------+-------------------------------
--
Vincenzo Maffione
--001a11417c3882e509054431f6ed
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To: freebsd-net@FreeBSD.org
Subject: [Bug 196361] Constrain IPv6 routes to each FIB (Consistent with IPv4
route behaviour)
Date: Thu, 22 Dec 2016 02:53:01 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D196361
--- Comment #9 from jhujhiti@adjectivism.org ---
Created attachment 178192
--> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D178192&action=
=3Dedit
Respect net.add_addr_allfibs=3D0 for inet6 (revision 1)
I didn't forget about this! I implemented against 10.3 about a year ago and
finally found the time to port it to HEAD. This patch essentially makes IPv6
respect net.add_addr_allfibs the same way IPv4 does. This is my first patch
against base - any feedback is welcome.
The changes here are mostly straightforward: where we have an ifp, we can u=
se
its FIB, and where we've previously assumed the default FIB, we should cons=
ider
that local routes can exist outside of it now. A couple changes are more
noteworthy:
* Default router selection (defrouter_ functions) can select multiple route=
rs,
up to one per FIB. defrouter_select() now takes a FIB argument to simplify =
the
logic inside the function. It is up to the caller to determine if we should
re-select routers for all FIBs, by making multiple calls, or not.
* In icmp6_reflect(), there may be an edge case where source address select=
ion
fails to use the correct FIB if in6ifa_ifwithaddr() returns NULL. I don't f=
ully
understand the situations in which this can happen (or if it's possible at
all).
* rtinit() didn't use the interface's FIB for both AF_INET as well as AF_IN=
ET6
and I don't understand why. For all uses of the function in AF_INET context,
using the interface FIB seems correct to me, but previous in_addprefix() and
rip_ctlinput() seem a little strange.
Here's what this looks like when net.add_addr_allfibs is 0. em0 and epair0b
here are bridged together and there is a router advertising fd00::/64.
em0: flags=3D8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 =
mtu
1500
options=3D42098<VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC,VLAN_=
HWTSO>
ether e0:cb:4e:00:5c:99
inet6 fe80::e2cb:4eff:fe00:5c99%em0 prefixlen 64 scopeid 0x1=20
inet6 fd00::e2cb:4eff:fe00:5c99 prefixlen 64 autoconf=20
nd6 options=3D23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL>
media: Ethernet autoselect (1000baseT <full-duplex>)
status: active
epair0b: flags=3D8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu =
1500
options=3D8<VLAN_MTU>
ether 04:ef:30:02:88:af
inet6 fe80::6ef:30ff:fe02:88af%epair0b prefixlen 64 scopeid 0x6=20
inet6 fd00::6ef:30ff:fe02:88af prefixlen 64 autoconf=20
nd6 options=3D23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL>
media: Ethernet 10Gbase-T (10Gbase-T <full-duplex>)
status: active
fib: 1
groups: epair=20
% ndp -na
Neighbor Linklayer Address Netif Expire S F=
lags
fe80::ff:30ff:fe02:80d%epair0b 02:ff:30:02:08:0d epair0b 23h45m16s S R
fd00::6ef:30ff:fe02:88af 04:ef:30:02:88:af epair0b permanent R=
=20
fe80::6ef:30ff:fe02:88af%epair0b 04:ef:30:02:88:af epair0b permanent R=
=20
fe80::ff:30ff:fe02:80d%em0 02:ff:30:02:08:0d em0 23h43m46s S R
fd00::e2cb:4eff:fe00:5c99 e0:cb:4e:00:5c:99 em0 permanent R=20
fe80::e2cb:4eff:fe00:5c99%em0 e0:cb:4e:00:5c:99 em0 permanent R
% ndp -np=20
fd00::/64 if=3Depair0b
flags=3DLAO vltime=3D600, pltime=3D300, expire=3D8m8s, ref=3D1
advertised by
fe80::ff:30ff:fe02:80d%epair0b (reachable)
fe80::%epair0b/64 if=3Depair0b
flags=3DLAO vltime=3Dinfinity, pltime=3Dinfinity, expire=3DNever, ref=3D0
No advertising router
fd00::/64 if=3Dem0
flags=3DLAO vltime=3D600, pltime=3D300, expire=3D8m8s, ref=3D1
advertised by
fe80::ff:30ff:fe02:80d%em0 (reachable)
fe80::%em0/64 if=3Dem0
flags=3DLAO vltime=3Dinfinity, pltime=3Dinfinity, expire=3DNever, ref=3D0
No advertising router
fe80::%lo0/64 if=3Dlo0
flags=3DLAO vltime=3Dinfinity, pltime=3Dinfinity, expire=3DNever, ref=3D0
No advertising router
% netstat -rnf inet6 -F0
Routing tables
Internet6:
Destination Gateway Flags N=
etif
Expire
::/96 ::1 UGRS =
lo0
default fe80::ff:30ff:fe02:80d%em0 UG =
em0
::1 link#3 UH =
lo0
::ffff:0.0.0.0/96 ::1 UGRS =
lo0
fd00::/64 link#1 U =
em0
fd00::e2cb:4eff:fe00:5c99 link#1 UHS =
lo0
fe80::/10 ::1 UGRS =
lo0
fe80::%em0/64 link#1 U =
em0
fe80::e2cb:4eff:fe00:5c99%em0 link#1 UHS =
lo0
fe80::%lo0/64 link#3 U =
lo0
fe80::1%lo0 link#3 UHS =
lo0
ff02::/16 ::1 UGRS =
lo0
% netstat -rnf inet6 -F1
Routing tables (fib: 1)
Internet6:
Destination Gateway Flags N=
etif
Expire
::/96 ::1 UGRS =
lo0
default fe80::ff:30ff:fe02:80d%epair0b UG epa=
ir0b
::1 lo0 UHS =
lo0
::ffff:0.0.0.0/96 ::1 UGRS =
lo0
fd00::/64 link#6 U epa=
ir0b
fd00::6ef:30ff:fe02:88af link#6 UHS =
lo0
fe80::/10 ::1 UGRS =
lo0
fe80::%epair0b/64 link#6 U epa=
ir0b
fe80::6ef:30ff:fe02:88af%epair0b link#6 UHS =
lo0
ff02::/16 ::1 UGRS =
lo0
% ifmcstat -f inet6
em0:
inet6 fe80::e2cb:4eff:fe00:5c99%em0 scopeid 0x1
mldv2 flags=3D2<USEALLOW> rv 2 qi 125 qri 10 uri 3
group ff01::1%em0 scopeid 0x1 mode exclude
mcast-macaddr 33:33:00:00:00:01
group ff02::2:c26b:b618%em0 scopeid 0x1 mode exclude
mcast-macaddr 33:33:c2:6b:b6:18
group ff02::2:ffc2:6bb6%em0 scopeid 0x1 mode exclude
mcast-macaddr 33:33:ff:c2:6b:b6
group ff02::1%em0 scopeid 0x1 mode exclude
mcast-macaddr 33:33:00:00:00:01
group ff02::1:ff00:5c99%em0 scopeid 0x1 mode exclude
mcast-macaddr 33:33:ff:00:5c:99
lo0:
inet6 fe80::1%lo0 scopeid 0x3
mldv2 flags=3D2<USEALLOW> rv 2 qi 125 qri 10 uri 3
group ff01::1%lo0 scopeid 0x3 mode exclude
group ff02::2:c26b:b618%lo0 scopeid 0x3 mode exclude
group ff02::2:ffc2:6bb6%lo0 scopeid 0x3 mode exclude
group ff02::1%lo0 scopeid 0x3 mode exclude
group ff02::1:ff00:1%lo0 scopeid 0x3 mode exclude
epair0b:
inet6 fe80::6ef:30ff:fe02:88af%epair0b scopeid 0x6
mldv2 flags=3D2<USEALLOW> rv 2 qi 125 qri 10 uri 3
group ff01::1%epair0b scopeid 0x6 mode exclude
mcast-macaddr 33:33:00:00:00:01
group ff02::2:c26b:b618%epair0b scopeid 0x6 mode exclude
mcast-macaddr 33:33:c2:6b:b6:18
group ff02::2:ffc2:6bb6%epair0b scopeid 0x6 mode exclude
mcast-macaddr 33:33:ff:c2:6b:b6
group ff02::1%epair0b scopeid 0x6 mode exclude
mcast-macaddr 33:33:00:00:00:01
group ff02::1:ff02:88af%epair0b scopeid 0x6 mode exclude
mcast-macaddr 33:33:ff:02:88:af
--=20
You are receiving this mail because:
You are the assignee for the bug.=
From owner-freebsd-net@freebsd.org Thu Dec 22 03:22:11 2016
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From: bugzilla-noreply@freebsd.org
To: freebsd-net@FreeBSD.org
Subject: [Bug 196361] Constrain IPv6 routes to each FIB (Consistent with IPv4
route behaviour)
Date: Thu, 22 Dec 2016 03:22:10 +0000
X-Bugzilla-Reason: AssignedTo
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X-Bugzilla-Version: 10.1-RELEASE
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D196361
Alan Somers <asomers@FreeBSD.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |asomers@FreeBSD.org
--- Comment #10 from Alan Somers <asomers@FreeBSD.org> ---
jhujhiti it looks good so far. Do you think you could also add regression
tests to tests/sys/netinet/fibs_test.sh? You can probably just mirror the
logic in the existing loopback_and_network_routes_on_nondefault_fib,
default_route_with_multiple_fibs_on_same_subnet, same_ip_multiple_ifaces_fi=
b0,
and subnet_route_with_multiple_fibs_on_same_subnet tests.
--=20
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From owner-freebsd-net@freebsd.org Thu Dec 22 04:43:41 2016
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Thu, 22 Dec 2016 06:13:21 +0200
Subject: Re: tcp between tap interfaces
To: dkleinh@phy.ucsf.edu
References: <20161210215405.886061vp9d04ld6l@keck.ucsf.edu>
From: Vikash Badal <vikashb@where-ever.za.net>
Cc: freebsd-net@freebsd.org
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On 11/12/2016 07:54, dkleinh@phy.ucsf.edu wrote:
> I'm trying to setup a private testing environment using the bhyve
> hypervisor and some virtual machines connected with tap interfaces
> to a bridge. My network configuration for this environment looks like
> this:
>
> I have a bridge interface with 5 tap interfaces, but no real interface as
> this is to be virtual. The bridge interface has interface: 192.168.1.1
> This is the gateway for the VMs. Each tap interface on the (virtual) bridge
> to each VM is on the 192.168.1.0/24 network. I nat the private network out
> through a real interface on the host.
>
> I use the pf packet filter and nat is working great, each VM can connect out
> to the world. The host can connect into each VM through the bridge and icmp
> and udp seem to work great between the VMs on the private network, but tcp
> does not seem to work.
add
skip on bridgeX
to your pf rules
alternatively you can add the filtering rules you want
> That is, I cannot ssh between the VMs, but ping works and I've setup a DNS
> server on one of the VMs and that works for resolving the different private VM
> host names and external names. The host can ssh into each VM OK.
>
> I'm totally at a loss where to go with this.
>
> I'm running FreeBSD 10.1 on the host.
>
>
>
>
>
> _______________________________________________
> freebsd-net@freebsd.org mailing list
> https://lists.freebsd.org/mailman/listinfo/freebsd-net
> To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org"
>
From owner-freebsd-net@freebsd.org Thu Dec 22 14:17:00 2016
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From: Andrea Venturoli <ml@netfence.it>
Subject: CARP troubles with 10.x
To: freebsd-net@freebsd.org
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Hello.
I've been using CARP for years and I'm only getting troubles since a
week or so.
My setup is as follows:
> |re0=10.1.2.13/10.1.2.127 fw1 fxp0=192.168.124.3|
> |client re0=10.1.2.18| --- --- |192.168.124.1 router WAN|
> |re0=10.1.2.15/10.1.2.127 fw2 fxp0=192.168.124.2|
Client, fw1 and fw2 are FreeBSD 10.3 with the latest patches.
On fw1 I have:
> ifconfig_re0="inet 10.1.2.13 netmask 255.255.255.0"
> ifconfig_re0_alias0="vhid 1 advskew 100 pass xxxxxx inet 10.1.2.127"
> ifconfig_fxp0="inet 192.168.124.3 netmask 255.255.255.0 -tso"
On fw2 I have:
> ifconfig_re0="inet 10.1.2.15 netmask 255.255.255.0"
> ifconfig_re0_alias0="vhid 1 pass xxxxxx inet 10.1.2.127"
> ifconfig_fxp0="192.168.124.2 netmask 255.255.255.0 -tso"
"client"'s gateway is 10.1.2.127.
Problem is, I start ssh sessions to some external hosts from "client";
fw1 and fw2 run stateful ipfw rules and ssh is configured to use
keep-alives.
After a while my ssh session will stop responding and later time out;
restarting them works immediately (for a while).
Digging the two firewalls' logs, I saw that the connections normally go
out through fw2 (which is expected due to advskew on fw1), but at some
point will switch to fw1 for no reason (no network event I'm aware of
has happened).
Nothing is in the logs about a CARP status change on both fw1 and fw2
(net.inet.carp.log=1).
Any help is appreciated, but first thing that puzzles me is that
"tcpdump -l -i re0 carp" shows absolutely nothing.
Shouldn't this log the CARP advertisement packets?
bye & Thanks
av.
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Subject: question about fopen fd limit
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From owner-freebsd-net@freebsd.org Thu Dec 22 17:07:34 2016
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On 12/22/16 10:57, ��������� wrote:
> and even in BSD 10 , it seems this short limit still there , but other OS as debian , FILE strucnt's fileno is a int .
* Certain members of __sFILE are accessed directly via macros or
* inline functions. To preserve ABI compat, these members must not
* be disturbed. These members are marked below with (*).
*/
struct __sFILE {
....
short _file; /* (*) fileno, if Unix descriptor, else
-1 */
If _file will be changed to int it will break existing binaries on upgrade.
Other OSes are more liberal in breaking compatibility.
>
> we found an unoffical patch easily change this fileno to unsigned , but we are a very stready project, we can't afford the risk
> to use an unoffical patch.
It is better change this field to int and rebuild all binaries (base
system and ports). But if you mix binaries from patched and unpatched
tree, system will be broken.
Other options are:
- use open instead fopen, write instead fwrite e.t.c. For big
applications it is a lot of work, but almost all scalable applications
don't use f* functions to work with files.
- find some library for file io with similar interface or write one.
- port musl libc to FreeBSD and link your application statically with
musl (not an option really, to much work).
From owner-freebsd-net@freebsd.org Thu Dec 22 17:41:09 2016
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Subject: [Bug 193724] [panic] [tcp] in tcp_discardcb
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Date: Thu, 22 Dec 2016 17:41:09 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D193724
Hiren Panchasara <hiren@FreeBSD.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|New |Closed
Resolution|--- |FIXED
--=20
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From owner-freebsd-net@freebsd.org Thu Dec 22 17:43:05 2016
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From: bugzilla-noreply@freebsd.org
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Subject: [Bug 205592] TCP processing in IPSec causes kernel panic
Date: Thu, 22 Dec 2016 17:43:05 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D205592
--- Comment #3 from Hiren Panchasara <hiren@FreeBSD.org> ---
Andrew,
Can you try to reproduce this on a more recent 11 based release?
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Hiren Panchasara <hiren@FreeBSD.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |FIXED
Status|New |Closed
CC| |hiren@FreeBSD.org
--- Comment #1 from Hiren Panchasara <hiren@FreeBSD.org> ---
I believe r296455 by jtl@ fixed this. If not, please reopen.
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Subject: [Bug 182382] [tcp] sysctl to set TCP CC method on BIG ENDIAN systems
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--- Comment #3 from Hiren Panchasara <hiren@FreeBSD.org> ---
Based on last comment.
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Subject: [Bug 15095] TCP's advertised window is not scaled immediately upon
discovering use of Window scale option
Date: Thu, 22 Dec 2016 18:28:45 +0000
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Hiren Panchasara <hiren@FreeBSD.org> changed:
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CC| |hiren@FreeBSD.org
--- Comment #7 from Hiren Panchasara <hiren@FreeBSD.org> ---
r156125 by andre@
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Subject: [Bug 61744] [netinet] [patch] TCP hangs onto mbufs with no tcp data
unnecessily under certain error conditions
Date: Thu, 22 Dec 2016 18:35:47 +0000
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Hiren Panchasara <hiren@FreeBSD.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Assignee|andre@freebsd.org |freebsd-net@FreeBSD.org
CC| |hiren@FreeBSD.org,
| |lstewart@FreeBSD.org
--- Comment #4 from Hiren Panchasara <hiren@FreeBSD.org> ---
Unsure if this is still a problem. CC'd lawrence as he was mentioned in the
last comment and assigning back to -net.
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Subject: [Bug 71965] TCP MSS issue in combination with ipfw fwd
Date: Thu, 22 Dec 2016 18:40:23 +0000
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CC| |hiren@FreeBSD.org
--- Comment #3 from Hiren Panchasara <hiren@FreeBSD.org> ---
10+ years without any update. Please reopen if this issue still persists.
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Subject: [Bug 93378] [tcp] Slow data transfer in Postfix and Cyrus IMAP
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Subject: [Bug 112528] [nfs] NFS over TCP under load hangs with "impossible
packet length"
Date: Thu, 22 Dec 2016 19:10:08 +0000
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Hiren Panchasara <hiren@FreeBSD.org> changed:
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--- Comment #3 from Hiren Panchasara <hiren@FreeBSD.org> ---
Quite a bit has changed in 10 years. Please reopen if issue persists.
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Subject: [Bug 82468] Using 64MB tcp send/recv buffers, trafficflow stops,
iperf can't be killed
Date: Thu, 22 Dec 2016 19:14:36 +0000
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Hiren Panchasara <hiren@FreeBSD.org> changed:
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----------------------------------------------------------------------------
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CC| |hiren@FreeBSD.org
--- Comment #3 from Hiren Panchasara <hiren@FreeBSD.org> ---
Please reopen if this is still a problem.
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From owner-freebsd-net@freebsd.org Thu Dec 22 19:27:52 2016
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Subject: [Bug 121257] [tcp] TSO + natd -> slow outgoing tcp traffic
Date: Thu, 22 Dec 2016 19:27:52 +0000
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--- Comment #6 from Hiren Panchasara <hiren@FreeBSD.org> ---
This seems like a real bug. Unsure if anything changed to fix it.
It'd be nice if someone with more knowledge can comment.
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Subject: [Bug 200361] net.inet.tcp.hostcache.list is jail information leak
Date: Thu, 22 Dec 2016 19:59:32 +0000
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Hiren Panchasara <hiren@FreeBSD.org> changed:
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----------------------------------------------------------------------------
Assignee|freebsd-bugs@FreeBSD.org |freebsd-net@FreeBSD.org
--- Comment #3 from Hiren Panchasara <hiren@FreeBSD.org> ---
I think you also need to include sys/pcpu.h to get curthread definition.
Can you try the patch with it and see if it does the right thing?
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Subject: [Bug 174087] [tcp] Problems with ephemeral port selection
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Hiren Panchasara <hiren@FreeBSD.org> changed:
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Assignee|andre@freebsd.org |freebsd-net@FreeBSD.org
--- Comment #4 from Hiren Panchasara <hiren@FreeBSD.org> ---
Assigning back to the pool as this seems like a valid problem from a cursory
glance.
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Subject: [Bug 200361] net.inet.tcp.hostcache.list is jail information leak
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op@hardenedbsd.org changed:
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Subject: [Bug 121257] [tcp] TSO + natd -> slow outgoing tcp traffic
Date: Thu, 22 Dec 2016 20:07:02 +0000
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Eugene Grosbein <ports@grosbein.net> changed:
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CC| |ports@grosbein.net
--- Comment #7 from Eugene Grosbein <ports@grosbein.net> ---
natd and ipfw nat both based on libalias that is not compatible with ISO. T=
his
is documented in ipfw(8) manual page, section BUGS. Before introduction of =
ipfw
nat this section mentioned natd and was erronously changed to mention only =
ipfw
nat.
Antway, it says: "Thus, to reliably nat your network traffic, please disable
TSO on your NICs using ifconfig(8)".
This PR should be closed as this documented behavour was always such.
ipfw(8) manual page and natd(8) should be fixed to explicitly mention that
natd(8) is not compatible with TSO.
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Subject: [Bug 173444] [socket] [patch] IPV6_USE_MIN_MTU and TCP is broken
Date: Thu, 22 Dec 2016 20:08:51 +0000
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Hiren Panchasara <hiren@FreeBSD.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |andre@freebsd.org
Assignee|andre@freebsd.org |freebsd-net@FreeBSD.org
--- Comment #5 from Hiren Panchasara <hiren@FreeBSD.org> ---
Mark, can you please check if this is still a problem?
Assigning back to the pool.
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Subject: [Bug 121257] [tcp] TSO + natd -> slow outgoing tcp traffic
Date: Thu, 22 Dec 2016 20:13:52 +0000
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Hiren Panchasara <hiren@FreeBSD.org> changed:
What |Removed |Added
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Status|In Progress |Closed
CC| |hiren@FreeBSD.org
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--- Comment #8 from Hiren Panchasara <hiren@FreeBSD.org> ---
Thanks a lot, Eugene.
Closing based on the last comment.
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Subject: [Bug 154600] [tcp] [panic] Random kernel panics on tcp_output
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Hiren Panchasara <hiren@FreeBSD.org> changed:
What |Removed |Added
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CC| |hiren@FreeBSD.org
--- Comment #2 from Hiren Panchasara <hiren@FreeBSD.org> ---
Not seen this problem at all lately. Please reopen if this is a problem for=
you
with later FreeBSD versions.
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Subject: [Bug 191520] [PATCH] Implementation of draft-ieft-tcpm-newcwv-06
Date: Thu, 22 Dec 2016 20:22:46 +0000
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Hiren Panchasara <hiren@FreeBSD.org> changed:
What |Removed |Added
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--- Comment #5 from Hiren Panchasara <hiren@FreeBSD.org> ---
This work is supposed to land from Netflix in coming months.
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Subject: [Bug 174535] [tcp] TCP fast retransmit feature works strange
Date: Thu, 22 Dec 2016 20:27:32 +0000
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--- Comment #3 from Hiren Panchasara <hiren@FreeBSD.org> ---
Please reopen with requested details if needed.
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Subject: [Bug 168913] tcpdump(8) causing interface to drop
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--- Comment #2 from Hiren Panchasara <hiren@FreeBSD.org> ---
Dave,
Can you try to reprod this on more recent (11 or head) version?
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From: Adrian Chadd <adrian.chadd@gmail.com>
Date: Thu, 22 Dec 2016 17:15:18 -0800
Message-ID: <CAJ-VmomTTPfr85E1CqbYZ2dj1R7ZPkTFP03Z-AAd_u=5GjNb4g@mail.gmail.com>
Subject: Re: cxgbe's native netmap support broken since r307394
To: Vincenzo Maffione <v.maffione@gmail.com>
Cc: Luigi Rizzo <rizzo@iet.unipi.it>, Navdeep Parhar <np@freebsd.org>,
"freebsd-net@freebsd.org" <freebsd-net@freebsd.org>,
Luigi Rizzo <luigi@freebsd.org>,
Giuseppe Lettieri <g.lettieri@iet.unipi.it>
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ok, does anyone mind if I commit it as-is?
-a
On 21 December 2016 at 13:37, Vincenzo Maffione <v.maffione@gmail.com> wrote:
> Hi Luigi,
> I attached a minimal change containing two fixes:
>
> - change IFNET_WLOCK into IFNET_RLOCK, to fix the cxgbe issue related
> to this thread
> - use the proper locking functions for the "worker_lock", unrelated
> but needed to avoid the O.S. to trap because of a mismatch between
> MTX_SPIN and MTX_DEF.
>
> Cheers,
> Vincenzo
>
> 2016-12-21 20:30 GMT+01:00 Luigi Rizzo <rizzo@iet.unipi.it>:
>> On Wed, Dec 21, 2016 at 11:15 AM, Vincenzo Maffione
>> <v.maffione@gmail.com> wrote:
>>> Hi,
>>> There is no commit related to that in the FreeBSD svn or git.
>>>
>>> The fix has been published to the github netmap repository here
>>> (branch master): https://github.com/luigirizzo/netmap
>>>
>>> What we should do is to import all the recent updates from the github
>>> into HEAD. I can prepare a patch for HEAD, if you wish. Just let me
>>> know.
>>
>> I just checked and the diff between FreeBSD head and netmap head
>> in github is almost 3k lines due to a lot of recent refactoring.
>> So, if there is an easy way to extract just the locking change that would
>> be preferable as an interim solution.
>>
>> cheers
>> luigi
>>
>>>
>>> Cheers,
>>> Vincenzo
>>>
>>>
>>> 2016-12-20 21:45 GMT+01:00 Adrian Chadd <adrian.chadd@gmail.com>:
>>>> hi,
>>>>
>>>> What's the commit? We should get it into -HEAD asap.
>>>>
>>>>
>>>> -adrian
>>>>
>>>>
>>>> On 20 December 2016 at 01:25, Vincenzo Maffione <v.maffione@gmail.com> wrote:
>>>>> Ok, applied to the netmap github repo.
>>>>> This fix will be published when Luigi does the next commit on FreeBSD.
>>>>>
>>>>> Cheers,
>>>>> Vincenzo
>>>>>
>>>>> 2016-12-19 20:05 GMT+01:00 Navdeep Parhar <np@freebsd.org>:
>>>>>> IFNET_RLOCK will work, thanks.
>>>>>>
>>>>>> Navdeep
>>>>>>
>>>>>> On Mon, Dec 19, 2016 at 3:21 AM, Vincenzo Maffione <v.maffione@gmail.com> wrote:
>>>>>>> Hi Navdeep,
>>>>>>>
>>>>>>> Indeed, we have reviewed the code, and we think it is ok to
>>>>>>> implement nm_os_ifnet_lock() with IFNET_RLOCK(), instead of using
>>>>>>> IFNET_WLOCK().
>>>>>>> Since IFNET_RLOCK() results into sx_slock(), this should fix the issue.
>>>>>>>
>>>>>>> On FreeBSD, this locking is needed to protect a flag read by nm_iszombie().
>>>>>>> However, on Linux the same lock is also needed to protect the call to
>>>>>>> the nm_hw_register() callback, so we prefer to have an "unified"
>>>>>>> locking scheme, i.e. always calling nm_hw_register under the lock.
>>>>>>>
>>>>>>> Does this make sense to you? Would it be easy for you to make a quick
>>>>>>> test by replacing IFNET_WLOCK with IFNET_RLOCK?
>>>>>>>
>>>>>>> Thanks,
>>>>>>> Vincenzo
>>>>>>>
>>>>>>> 2016-12-17 23:28 GMT+01:00 Navdeep Parhar <np@freebsd.org>:
>>>>>>>> Luigi, Vincenzo,
>>>>>>>>
>>>>>>>> The last major update to netmap (r307394 and followups) broke cxgbe's
>>>>>>>> native netmap support. The problem is that netmap_hw_reg now holds an
>>>>>>>> rw_lock around the driver's netmap_on/off routines. It has always been
>>>>>>>> safe for the driver to sleep during these operations but now it panics
>>>>>>>> instead.
>>>>>>>>
>>>>>>>> Why is IFNET_WLOCK needed here? It seems like a regression to disallow
>>>>>>>> sleep on the control path.
>>>>>>>>
>>>>>>>> Regards,
>>>>>>>> Navdeep
>>>>>>>>
>>>>>>>> begin_synchronized_op with the following non-sleepable locks held:
>>>>>>>> exclusive rw ifnet_rw (ifnet_rw) r = 0 (0xffffffff8271d680) locked @
>>>>>>>> /root/ws/head/sys/dev/netmap/netmap_freebsd.c:95
>>>>>>>> stack backtrace:
>>>>>>>> #0 0xffffffff810837a5 at witness_debugger+0xe5
>>>>>>>> #1 0xffffffff81084d88 at witness_warn+0x3b8
>>>>>>>> #2 0xffffffff83ef2bcc at begin_synchronized_op+0x6c
>>>>>>>> #3 0xffffffff83f14beb at cxgbe_netmap_reg+0x5b
>>>>>>>> #4 0xffffffff809846f1 at netmap_hw_reg+0x81
>>>>>>>> #5 0xffffffff809806de at netmap_do_regif+0x19e
>>>>>>>> #6 0xffffffff8098121d at netmap_ioctl+0x7ad
>>>>>>>> #7 0xffffffff8098682f at freebsd_netmap_ioctl+0x5f
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> Vincenzo Maffione
>>>>>>> _______________________________________________
>>>>>>> freebsd-net@freebsd.org mailing list
>>>>>>> https://lists.freebsd.org/mailman/listinfo/freebsd-net
>>>>>>> To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org"
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Vincenzo Maffione
>>>>> _______________________________________________
>>>>> freebsd-net@freebsd.org mailing list
>>>>> https://lists.freebsd.org/mailman/listinfo/freebsd-net
>>>>> To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org"
>>>
>>>
>>>
>>> --
>>> Vincenzo Maffione
>>
>>
>>
>> --
>> -----------------------------------------+-------------------------------
>> Prof. Luigi RIZZO, rizzo@iet.unipi.it . Dip. di Ing. dell'Informazione
>> http://www.iet.unipi.it/~luigi/ . Universita` di Pisa
>> TEL +39-050-2217533 . via Diotisalvi 2
>> Mobile +39-338-6809875 . 56122 PISA (Italy)
>> -----------------------------------------+-------------------------------
>
>
>
> --
> Vincenzo Maffione
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From: Luigi Rizzo <rizzo@iet.unipi.it>
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Subject: Re: cxgbe's native netmap support broken since r307394
To: Adrian Chadd <adrian.chadd@gmail.com>
Cc: Vincenzo Maffione <v.maffione@gmail.com>, Navdeep Parhar <np@freebsd.org>,
"freebsd-net@freebsd.org" <freebsd-net@freebsd.org>,
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sure go ahead and thank you!
On Thu, Dec 22, 2016 at 5:15 PM, Adrian Chadd <adrian.chadd@gmail.com> wrote:
> ok, does anyone mind if I commit it as-is?
>
>
> -a
>
>
> On 21 December 2016 at 13:37, Vincenzo Maffione <v.maffione@gmail.com> wrote:
>> Hi Luigi,
>> I attached a minimal change containing two fixes:
>>
>> - change IFNET_WLOCK into IFNET_RLOCK, to fix the cxgbe issue related
>> to this thread
>> - use the proper locking functions for the "worker_lock", unrelated
>> but needed to avoid the O.S. to trap because of a mismatch between
>> MTX_SPIN and MTX_DEF.
>>
>> Cheers,
>> Vincenzo
>>
>> 2016-12-21 20:30 GMT+01:00 Luigi Rizzo <rizzo@iet.unipi.it>:
>>> On Wed, Dec 21, 2016 at 11:15 AM, Vincenzo Maffione
>>> <v.maffione@gmail.com> wrote:
>>>> Hi,
>>>> There is no commit related to that in the FreeBSD svn or git.
>>>>
>>>> The fix has been published to the github netmap repository here
>>>> (branch master): https://github.com/luigirizzo/netmap
>>>>
>>>> What we should do is to import all the recent updates from the github
>>>> into HEAD. I can prepare a patch for HEAD, if you wish. Just let me
>>>> know.
>>>
>>> I just checked and the diff between FreeBSD head and netmap head
>>> in github is almost 3k lines due to a lot of recent refactoring.
>>> So, if there is an easy way to extract just the locking change that would
>>> be preferable as an interim solution.
>>>
>>> cheers
>>> luigi
>>>
>>>>
>>>> Cheers,
>>>> Vincenzo
>>>>
>>>>
>>>> 2016-12-20 21:45 GMT+01:00 Adrian Chadd <adrian.chadd@gmail.com>:
>>>>> hi,
>>>>>
>>>>> What's the commit? We should get it into -HEAD asap.
>>>>>
>>>>>
>>>>> -adrian
>>>>>
>>>>>
>>>>> On 20 December 2016 at 01:25, Vincenzo Maffione <v.maffione@gmail.com> wrote:
>>>>>> Ok, applied to the netmap github repo.
>>>>>> This fix will be published when Luigi does the next commit on FreeBSD.
>>>>>>
>>>>>> Cheers,
>>>>>> Vincenzo
>>>>>>
>>>>>> 2016-12-19 20:05 GMT+01:00 Navdeep Parhar <np@freebsd.org>:
>>>>>>> IFNET_RLOCK will work, thanks.
>>>>>>>
>>>>>>> Navdeep
>>>>>>>
>>>>>>> On Mon, Dec 19, 2016 at 3:21 AM, Vincenzo Maffione <v.maffione@gmail.com> wrote:
>>>>>>>> Hi Navdeep,
>>>>>>>>
>>>>>>>> Indeed, we have reviewed the code, and we think it is ok to
>>>>>>>> implement nm_os_ifnet_lock() with IFNET_RLOCK(), instead of using
>>>>>>>> IFNET_WLOCK().
>>>>>>>> Since IFNET_RLOCK() results into sx_slock(), this should fix the issue.
>>>>>>>>
>>>>>>>> On FreeBSD, this locking is needed to protect a flag read by nm_iszombie().
>>>>>>>> However, on Linux the same lock is also needed to protect the call to
>>>>>>>> the nm_hw_register() callback, so we prefer to have an "unified"
>>>>>>>> locking scheme, i.e. always calling nm_hw_register under the lock.
>>>>>>>>
>>>>>>>> Does this make sense to you? Would it be easy for you to make a quick
>>>>>>>> test by replacing IFNET_WLOCK with IFNET_RLOCK?
>>>>>>>>
>>>>>>>> Thanks,
>>>>>>>> Vincenzo
>>>>>>>>
>>>>>>>> 2016-12-17 23:28 GMT+01:00 Navdeep Parhar <np@freebsd.org>:
>>>>>>>>> Luigi, Vincenzo,
>>>>>>>>>
>>>>>>>>> The last major update to netmap (r307394 and followups) broke cxgbe's
>>>>>>>>> native netmap support. The problem is that netmap_hw_reg now holds an
>>>>>>>>> rw_lock around the driver's netmap_on/off routines. It has always been
>>>>>>>>> safe for the driver to sleep during these operations but now it panics
>>>>>>>>> instead.
>>>>>>>>>
>>>>>>>>> Why is IFNET_WLOCK needed here? It seems like a regression to disallow
>>>>>>>>> sleep on the control path.
>>>>>>>>>
>>>>>>>>> Regards,
>>>>>>>>> Navdeep
>>>>>>>>>
>>>>>>>>> begin_synchronized_op with the following non-sleepable locks held:
>>>>>>>>> exclusive rw ifnet_rw (ifnet_rw) r = 0 (0xffffffff8271d680) locked @
>>>>>>>>> /root/ws/head/sys/dev/netmap/netmap_freebsd.c:95
>>>>>>>>> stack backtrace:
>>>>>>>>> #0 0xffffffff810837a5 at witness_debugger+0xe5
>>>>>>>>> #1 0xffffffff81084d88 at witness_warn+0x3b8
>>>>>>>>> #2 0xffffffff83ef2bcc at begin_synchronized_op+0x6c
>>>>>>>>> #3 0xffffffff83f14beb at cxgbe_netmap_reg+0x5b
>>>>>>>>> #4 0xffffffff809846f1 at netmap_hw_reg+0x81
>>>>>>>>> #5 0xffffffff809806de at netmap_do_regif+0x19e
>>>>>>>>> #6 0xffffffff8098121d at netmap_ioctl+0x7ad
>>>>>>>>> #7 0xffffffff8098682f at freebsd_netmap_ioctl+0x5f
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> --
>>>>>>>> Vincenzo Maffione
>>>>>>>> _______________________________________________
>>>>>>>> freebsd-net@freebsd.org mailing list
>>>>>>>> https://lists.freebsd.org/mailman/listinfo/freebsd-net
>>>>>>>> To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org"
>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> Vincenzo Maffione
>>>>>> _______________________________________________
>>>>>> freebsd-net@freebsd.org mailing list
>>>>>> https://lists.freebsd.org/mailman/listinfo/freebsd-net
>>>>>> To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org"
>>>>
>>>>
>>>>
>>>> --
>>>> Vincenzo Maffione
>>>
>>>
>>>
>>> --
>>> -----------------------------------------+-------------------------------
>>> Prof. Luigi RIZZO, rizzo@iet.unipi.it . Dip. di Ing. dell'Informazione
>>> http://www.iet.unipi.it/~luigi/ . Universita` di Pisa
>>> TEL +39-050-2217533 . via Diotisalvi 2
>>> Mobile +39-338-6809875 . 56122 PISA (Italy)
>>> -----------------------------------------+-------------------------------
>>
>>
>>
>> --
>> Vincenzo Maffione
--
-----------------------------------------+-------------------------------
Prof. Luigi RIZZO, rizzo@iet.unipi.it . Dip. di Ing. dell'Informazione
http://www.iet.unipi.it/~luigi/ . Universita` di Pisa
TEL +39-050-2217533 . via Diotisalvi 2
Mobile +39-338-6809875 . 56122 PISA (Italy)
-----------------------------------------+-------------------------------
From owner-freebsd-net@freebsd.org Fri Dec 23 02:49:26 2016
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Subject: [Bug 175153] [tcp] will there miss a FIN when do TSO?
Date: Fri, 23 Dec 2016 02:49:26 +0000
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X-List-Received-Date: Fri, 23 Dec 2016 02:49:26 -0000
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D175153
Hiren Panchasara <hiren@FreeBSD.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |hiren@FreeBSD.org
--- Comment #2 from Hiren Panchasara <hiren@FreeBSD.org> ---
Your observation seems correct to me but I've never seen this problem. If t=
his
problem occurs, i.e. if we miss sending the FIN, keepalive would kick in and
it's response would cause us to send RST as the application has closed.
I'll try to spend some time on it to look at the code more closely. Thanks =
for
the report.
BTW, did you see this happen anywhere? or is this just from the code
inspection?
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To: freebsd-net@FreeBSD.org
Subject: [Bug 164265] [netinet] [patch] tcp_lro_rx computes wrong checksum if
'csum' variable is 0
Date: Fri, 23 Dec 2016 03:08:24 +0000
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--- Comment #2 from Hiren Panchasara <hiren@FreeBSD.org> ---
Dilip,
LRO code has changed/improve lately. Can you please check if this problem s=
till
persists?
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Subject: [Bug 154557] [tcp] Freeze tcp-session of the clients, if in the
gateway is used quagga
Date: Fri, 23 Dec 2016 03:11:35 +0000
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Hiren Panchasara <hiren@FreeBSD.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |Not A Bug
Status|In Progress |Closed
--- Comment #4 from Hiren Panchasara <hiren@FreeBSD.org> ---
Looks like the suggested workaround works for the o/p. Closing this bug. Pl=
ease
reopen if we need to fix this.
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Subject: [Bug 168842] [tcp] FreeBSD hosts are sending TCP packets with FIN
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Date: Fri, 23 Dec 2016 06:28:32 +0000
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Hiren Panchasara <hiren@FreeBSD.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|andre@freebsd.org |freebsd-net@FreeBSD.org
Status|In Progress |Open
--- Comment #4 from Hiren Panchasara <hiren@FreeBSD.org> ---
Putting this back to the pool as I suspect the problems andre mentioned may
still exist.
Nikolay, is it possible for you to check if you are still seeing the proble=
m?
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Subject: [Bug 211441] incorrect handling of TCPS_SYN_SENT and
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Date: Fri, 23 Dec 2016 06:49:44 +0000
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Hiren Panchasara <hiren@FreeBSD.org> changed:
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----------------------------------------------------------------------------
CC| |hiren@FreeBSD.org,
| |tuexen@freebsd.org
--- Comment #1 from Hiren Panchasara <hiren@FreeBSD.org> ---
CCing Michael as he has fixed some state transition bugs in TCP lately.
Michael, would you be able to take a look? If not, let me know and I'll try=
to
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From owner-freebsd-net@freebsd.org Fri Dec 23 07:36:01 2016
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Subject: [Bug 211003] net.inet.tcp.delayed_ack=0 delaying local tcp requests
Date: Fri, 23 Dec 2016 07:36:00 +0000
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Hiren Panchasara <hiren@FreeBSD.org> changed:
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--- Comment #1 from Hiren Panchasara <hiren@FreeBSD.org> ---
Exact 5s delay is very interesting. It usually points to persist timer but =
not
sure how to relate that here. Looks like lynx is not draining the recv space
fast enough? I am not quite sure but if possible, can you try 1) capturing =
the
transfer 2) something other than lynx on recv side 3) -HEAD or 11?
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Subject: [Bug 175153] [tcp] will there miss a FIN when do TSO?
Date: Fri, 23 Dec 2016 07:38:35 +0000
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--- Comment #3 from yizhouzhou@ict.ac.cn ---
(In reply to Hiren Panchasara from comment #2)
Thanks for reviewing my report. This is about 3 years ago, I forget wether=
=20
or not I have debugged it through gdb. But the problem was discovered during
the=20
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Subject: [Bug 211441] incorrect handling of TCPS_SYN_SENT and
TCPS_SYN_RECEIVED in API tcp_usrclosed() in file tcp_usrreq.c
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--- Comment #2 from Michael Tuexen <tuexen@freebsd.org> ---
Hi Hiren,
I can take care of it.
Best regards
Michael
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Subject: [Bug 211441] incorrect handling of TCPS_SYN_SENT and
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Subject: [Bug 197230] [patch] Add rcNG startup script to configure ng_tcpmss(4)
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--- Comment #3 from Hiren Panchasara <hiren@FreeBSD.org> ---
Anyone interested in commiting this work?
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Subject: [Bug 151996] [patch] new tcpdrop(8) option to select interactively
connections to drop
Date: Fri, 23 Dec 2016 07:49:23 +0000
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Hiren Panchasara <hiren@FreeBSD.org> changed:
What |Removed |Added
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Assignee|freebsd-bugs@FreeBSD.org |freebsd-net@FreeBSD.org
CC| |hiren@FreeBSD.org
--- Comment #1 from Hiren Panchasara <hiren@FreeBSD.org> ---
Thanks for the submission.
I have no opinion on the added functionality. If people find this useful, we
can get this committed.
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From owner-freebsd-net@freebsd.org Fri Dec 23 07:51:35 2016
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Subject: [Bug 138046] [tcp] tcp sockets stay in SYN_SENT even after receiving
RST. never time out as well.
Date: Fri, 23 Dec 2016 07:51:35 +0000
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CC| |hiren@FreeBSD.org
Assignee|andre@freebsd.org |freebsd-net@FreeBSD.org
--- Comment #3 from Hiren Panchasara <hiren@FreeBSD.org> ---
Need to evaluate if this is still the case.
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Subject: [Bug 141741] Etherlink III NIC won't work after upgrade to FBSD 8,
If I run tcpdump - it works.
Date: Fri, 23 Dec 2016 07:54:08 +0000
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--- Comment #5 from Hiren Panchasara <hiren@FreeBSD.org> ---
Please reopen if this is still a problem.
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Subject: [Bug 199287] Missing TCP retransmit timer reset
Date: Fri, 23 Dec 2016 08:02:59 +0000
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--- Comment #3 from Hiren Panchasara <hiren@FreeBSD.org> ---
Ping - to see if you got a chance to look into the details. :-)
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Subject: [Bug 199287] Missing TCP retransmit timer reset
Date: Fri, 23 Dec 2016 09:57:20 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D199287
--- Comment #4 from sebastian.huber@embedded-brains.de ---
(In reply to Hiren Panchasara from comment #3)
Sorry, I am even more busy than last year. I didn't forget about this, but I
have to set priorities. We update currently to FreeBSD HEAD.
--=20
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Date: Fri, 23 Dec 2016 10:48:00 +0000 (UTC)
From: John Dison <jdison16@yahoo.com>
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Subject: How to configure another loopback device?
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Hello,
I want to configure lo1 loopback device and assign aliases to it via rc.con=
f system (at boot).I also want loopback addresses to remain on lo0.
What I have:ipv6_activate_all_interfaces=3D"YES"ifconfig_lo1_alias0=3D"inet=
IP4/32"ifconfig_lo1_alias1=3D"inet6 IP6/128"cloned_interfaces=3D"lo1"creat=
e_args_lo1=3D"inet6 auto_linklocal"
As a result I have:
1) inet6 ::1 prefixlen 128 =C2=A0 is configured on lo1 (I want it to stay a=
t lo0)2) IP6 alias is missing from lo1 at all
I can achieve the desired configuration from command line, but I am unable =
to do the same via rc.conf.=C2=A0
Any suggestions?
Thanks.
=20
From owner-freebsd-net@freebsd.org Fri Dec 23 13:04:52 2016
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From: bugzilla-noreply@freebsd.org
To: freebsd-net@FreeBSD.org
Subject: [Bug 138046] [tcp] tcp sockets stay in SYN_SENT even after receiving
RST. never time out as well.
Date: Fri, 23 Dec 2016 13:04:52 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D138046
Michael Tuexen <tuexen@freebsd.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tuexen@freebsd.org
--- Comment #4 from Michael Tuexen <tuexen@freebsd.org> ---
Hi Hiren,
if the response to the SYN is a pure RST (without an ACK bit set), it shoul=
d be
ignored. If it is a RST-ACK, it should be accepted if and only if it acks t=
he
SYN.
This is tested in
https://github.com/freebsd-net/tcp-testsuite/blob/master/state-event-engine=
/rcv-rst-syn-sent/README.md
and
https://github.com/freebsd-net/tcp-testsuite/blob/master/state-event-engine=
/rcv-rst-ack-syn-sent/README.md.
I found no issues using the test scripts.
Best regards
Michael
--=20
You are receiving this mail because:
You are the assignee for the bug.=
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From: John Dison <jdison16@yahoo.com>
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Subject: Re: How to configure another loopback device?
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Sorry, just noticed damn yahoo mailer eat all line breaks. Resending in plain text (I hope):
I want to configure lo1 loopback device and assign aliases to it via rc.conf system (at boot).
I also want loopback addresses to remain on lo0.
What I have:
ipv6_activate_all_interfaces="YES"
ifconfig_lo1_alias0="inet IP4/32"
ifconfig_lo1_alias1="inet6 IP6/128"
cloned_interfaces="lo1"
create_args_lo1="inet6 auto_linklocal"
As a result I have:
1) inet6 ::1 prefixlen 128 is configured on lo1 (I want it to stay at lo0)
2) IP6 alias is missing from lo1 at all
I can achieve the desired configuration from command line, but I am unable to do the same via rc.conf.
Any suggestions?
Thanks.
From owner-freebsd-net@freebsd.org Fri Dec 23 15:27:51 2016
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Subject: Re: How to configure another loopback device?
To: John Dison <jdison16@yahoo.com>,
"freebsd-net@freebsd.org" <freebsd-net@freebsd.org>
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From: Miroslav Lachman <000.fbsd@quip.cz>
Message-ID: <585D4272.2010706@quip.cz>
Date: Fri, 23 Dec 2016 16:27:46 +0100
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John Dison via freebsd-net wrote on 2016/12/23 15:10:
> Sorry, just noticed damn yahoo mailer eat all line breaks. Resending in plain text (I hope):
>
> I want to configure lo1 loopback device and assign aliases to it via rc.conf system (at boot).
> I also want loopback addresses to remain on lo0.
>
> What I have:
> ipv6_activate_all_interfaces="YES"
> ifconfig_lo1_alias0="inet IP4/32"
> ifconfig_lo1_alias1="inet6 IP6/128"
> cloned_interfaces="lo1"
> create_args_lo1="inet6 auto_linklocal"
>
>
> As a result I have:
>
> 1) inet6 ::1 prefixlen 128 is configured on lo1 (I want it to stay at lo0)
> 2) IP6 alias is missing from lo1 at all
>
> I can achieve the desired configuration from command line, but I am unable to do the same via rc.conf.
I don't have much experiences with IPv6.
Can you post 'ifconfig' output with right (manual) settings and the
second one with the wrong settings you have from rc.conf?
Miroslav Lachman
From owner-freebsd-net@freebsd.org Fri Dec 23 16:52:59 2016
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Date: Fri, 23 Dec 2016 16:52:48 +0000 (UTC)
From: John Dison <jdison16@yahoo.com>
Reply-To: John Dison <jdison16@yahoo.com>
To: Miroslav Lachman <000.fbsd@quip.cz>,
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Subject: Re: How to configure another loopback device?
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> I don't have much experiences with IPv6.
> Can you post 'ifconfig' output with right (manual) settings and the
> second one with the wrong settings you have from rc.conf?
With these rc.conf settings I get:
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
options=600003<RXCSUM,TXCSUM,RXCSUM_IPV6,TXCSUM_IPV6>
inet 127.0.0.1 netmask 0xff000000
nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
(missing ::1/128)
lo1: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
options=600003<RXCSUM,TXCSUM,RXCSUM_IPV6,TXCSUM_IPV6>
inet6 ::1 prefixlen 128
inet6 fe80::1%lo1 prefixlen 64 scopeid 0x4
inet IP4 netmask 0xffffffff
inet6 IP6 prefixlen 128
nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
(extra ::1, I want it to remain on lo0)
With manual configuration I get:
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
options=600003<RXCSUM,TXCSUM,RXCSUM_IPV6,TXCSUM_IPV6>
inet6 ::1 prefixlen 128
inet6 fe80::1%lo0 prefixlen 64 scopeid 0x3
inet 127.0.0.1 netmask 0xff000000
nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
(standard localhost configuration, both 127.0.0.1 and ::1 are here)
lo1: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
options=600003<RXCSUM,TXCSUM,RXCSUM_IPV6,TXCSUM_IPV6>
inet IP4 netmask 0xffffffff
inet6 IP6 prefixlen 128
nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
(Okay, neither 127.0.0.1 nor ::1 are here)
From owner-freebsd-net@freebsd.org Fri Dec 23 17:06:51 2016
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Subject: Re: How to configure another loopback device?
To: John Dison <jdison16@yahoo.com>,
"freebsd-net@freebsd.org" <freebsd-net@freebsd.org>
References: <484245134.901856.1482481724608.ref@mail.yahoo.com>
<484245134.901856.1482481724608@mail.yahoo.com>
<1799694948.900229.1482490080295@mail.yahoo.com>
<1031105507.1010181.1482502206363@mail.yahoo.com>
From: Mike Tancsa <mike@sentex.net>
Organization: Sentex Communications
Message-ID: <f05aaf0b-0066-2f1b-8fe1-7fd826b3f6c6@sentex.net>
Date: Fri, 23 Dec 2016 12:06:43 -0500
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On 12/23/2016 9:10 AM, John Dison via freebsd-net wrote:
> Sorry, just noticed damn yahoo mailer eat all line breaks. Resending in plain text (I hope):
>
> I want to configure lo1 loopback device and assign aliases to it via rc.conf system (at boot).
> I also want loopback addresses to remain on lo0.
>
> What I have:
> ifconfig_lo1_alias0="inet IP4/32"
> ifconfig_lo1_alias1="inet6 IP6/128"
> cloned_interfaces="lo1"
> create_args_lo1="inet6 auto_linklocal"
>
if your first IPs are say 192.168.1.1-2/32 and 2001:550:2:8::1e-f
Try without an alias0 for the first set of IPs
ifconfig_lo1="inet 192.168.1.1/32"
ifconfig_lo1_ipv6="inet6 2001:550:2:8::1e prefixlen 126"
ifconfig_lo1_alias0="inet 192.168.1.2/32"
ifconfig_lo1_ipv6_alias0="inet6 2001:550:2:8::1f prefixlen 126"
---Mike
--
-------------------
Mike Tancsa, tel +1 519 651 3400
Sentex Communications, mike@sentex.net
Providing Internet services since 1994 www.sentex.net
Cambridge, Ontario Canada http://www.tancsa.com/
From owner-freebsd-net@freebsd.org Fri Dec 23 19:42:22 2016
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To: freebsd-net@FreeBSD.org
Subject: [Bug 199287] Missing TCP retransmit timer reset
Date: Fri, 23 Dec 2016 19:42:22 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D199287
--- Comment #5 from Hiren Panchasara <hiren@FreeBSD.org> ---
(In reply to sebastian.huber from comment #4)
Much better if you can test of -HEAD and report back whenever time permits.
Cheers.
--=20
You are receiving this mail because:
You are the assignee for the bug.=
From owner-freebsd-net@freebsd.org Sat Dec 24 02:05:09 2016
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From: bugzilla-noreply@freebsd.org
To: freebsd-net@FreeBSD.org
Subject: [Bug 211003] net.inet.tcp.delayed_ack=0 delaying local tcp requests
Date: Sat, 24 Dec 2016 02:05:08 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D211003
rkoberman@gmail.com changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rkoberman@gmail.com
--- Comment #2 from rkoberman@gmail.com ---
You might look at using siftr(4) to collect statistics on the transfer. It =
is
often overlooked, but is a part of the base system and captures detailed
information on TCP activity. This can be very useful for analyzing TCP
performance issues. The man page is quite detailed.
--=20
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From: David Somayajulu <david.somayajulu@qlogic.com>
To: "freebsd-net@freebsd.org" <freebsd-net@freebsd.org>
Subject: IPV6 LRO in FreeBSD7.4 or Stable_7
Thread-Topic: IPV6 LRO in FreeBSD7.4 or Stable_7
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Hi,
Is IPv6 LRO support available in FreeBSD7.4 or Stable_7 ? Examining tcp_inp=
ut() in netinet/tcp_input.c, it appears that it is not. Just want to make s=
ure I didn't miss anything.
Thanks
David S.
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Subject: [Bug 138046] [tcp] tcp sockets stay in SYN_SENT even after receiving
RST. never time out as well.
Date: Sat, 24 Dec 2016 08:54:48 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D138046
Hiren Panchasara <hiren@FreeBSD.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|In Progress |Closed
Resolution|--- |Overcome By Events
--- Comment #5 from Hiren Panchasara <hiren@FreeBSD.org> ---
Michael,
Thanks a lot for checking.
--=20
You are receiving this mail because:
You are the assignee for the bug.=
From owner-freebsd-net@freebsd.org Sat Dec 24 09:03:06 2016
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Date: Sat, 24 Dec 2016 01:02:59 -0800
From: hiren panchasara <hiren@strugglingcoder.info>
To: David Somayajulu <david.somayajulu@qlogic.com>
Cc: "freebsd-net@freebsd.org" <freebsd-net@freebsd.org>
Subject: Re: IPV6 LRO in FreeBSD7.4 or Stable_7
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On 12/23/16 at 09:45P, David Somayajulu wrote:
> Hi,
> Is IPv6 LRO support available in FreeBSD7.4 or Stable_7 ? Examining tcp_input() in netinet/tcp_input.c, it appears that it is not. Just want to make sure I didn't miss anything.
>
As far as I can tell, you are right.
Cheers,
Hiren
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From: John Dison <jdison16@yahoo.com>
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Subject: Re: How to configure another loopback device?
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> if your first IPs are say 192.168.1.1-2/32 and 2001:550:2:8::1e-f
> Try without an alias0 for the first set of IPs
> ifconfig_lo1="inet 192.168.1.1/32"
> ifconfig_lo1_ipv6="inet6 2001:550:2:8::1e prefixlen 126"
> ifconfig_lo1_alias0="inet 192.168.1.2/32"
> ifconfig_lo1_ipv6_alias0="inet6 2001:550:2:8::1f prefixlen 126"
It does not help: ::1/128 is still on lo1, rather than lo0.
From owner-freebsd-net@freebsd.org Sat Dec 24 11:57:47 2016
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Subject: Re: How to configure another loopback device?
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John Dison via freebsd-net <freebsd-net@freebsd.org> wrote
in <1404669989.1370681.1482573468893@mail.yahoo.com>:
fr> > if your first IPs are say 192.168.1.1-2/32 and 2001:550:2:8::1e-f
fr>
fr> > Try without an alias0 for the first set of IPs
fr>
fr> > ifconfig_lo1="inet 192.168.1.1/32"
fr> > ifconfig_lo1_ipv6="inet6 2001:550:2:8::1e prefixlen 126"
fr> > ifconfig_lo1_alias0="inet 192.168.1.2/32"
fr> > ifconfig_lo1_ipv6_alias0="inet6 2001:550:2:8::1f prefixlen 126"
fr>
fr>
fr>
fr> It does not help: ::1/128 is still on lo1, rather than lo0.
Does adding ifconfig_lo0="inet 127.0.0.1/8" to /etc/rc.conf work?
-- Hiroki
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Subject: [Bug 215122] Try to change route default to IP out of range lock the
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Date: Sat, 24 Dec 2016 13:18:00 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D215122
guyyur@gmail.com changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |guyyur@gmail.com
--- Comment #4 from guyyur@gmail.com ---
*** Bug 211602 has been marked as a duplicate of this bug. ***
--=20
You are receiving this mail because:
You are the assignee for the bug.=
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Subject: [Bug 211602] route change command for ipv6 route with bad gateway
leads to deadlock/panic
Date: Sat, 24 Dec 2016 13:18:00 +0000
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guyyur@gmail.com changed:
What |Removed |Added
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--- Comment #1 from guyyur@gmail.com ---
*** This bug has been marked as a duplicate of bug 215122 ***
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Subject: [Bug 205592] TCP processing in IPSec causes kernel panic
Date: Sat, 24 Dec 2016 18:26:12 +0000
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--- Comment #4 from andrew@rinet.ru ---
(In reply to Hiren Panchasara from comment #3)
Unfortunately, no: I don't see 11-R being ready for production yet.
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Date: Sat, 24 Dec 2016 18:28:33 +0000 (UTC)
From: John Dison <jdison16@yahoo.com>
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Subject: RE: How to configure another loopback device?
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----- Forwarded Message -----
From: John Dison <jdison16@yahoo.com>
To: Hiroki Sato <hrs@FreeBSD.org>; "freebsd-net@freebsd.org" <freebsd-net@freebsd.org>
Cc: "mike@sentex.net" <mike@sentex.net>
Sent: Saturday, December 24, 2016 5:25 PM
Subject: Re: How to configure another loopback device?
fr> > if your first IPs are say 192.168.1.1-2/32 and 2001:550:2:8::1e-f
fr>
fr> > Try without an alias0 for the first set of IPs
fr>
fr> > ifconfig_lo1="inet 192.168.1.1/32"
fr> > ifconfig_lo1_ipv6="inet6 2001:550:2:8::1e prefixlen 126"
fr> > ifconfig_lo1_alias0="inet 192.168.1.2/32"
fr> > ifconfig_lo1_ipv6_alias0="inet6 2001:550:2:8::1f prefixlen 126"
fr>
fr>
fr>
fr> It does not help: ::1/128 is still on lo1, rather than lo0.
> Does adding ifconfig_lo0="inet 127.0.0.1/8" to /etc/rc.conf work?
Yes, adding ifconfig_lo0="inet 127.0.0.1/8" helps indeed.
Interesting is that if I also add ifconfig_lo0_ipv6="inet6 ::1/128"
then ::1/128 will be on lo1. If I do not add that line, it will be on lo0.
Looks weird but that workaround work. Thanks.
From owner-freebsd-net@freebsd.org Sat Dec 24 18:29:15 2016
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Subject: [Bug 205592] TCP processing in IPSec causes kernel panic
Date: Sat, 24 Dec 2016 18:29:16 +0000
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Eugene Grosbein <ports@grosbein.net> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ports@grosbein.net
--- Comment #5 from Eugene Grosbein <ports@grosbein.net> ---
(In reply to andrew from comment #4)
And lack of testing does not make it more ready.
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Subject: [Bug 215513] panic: SACK scoreboard must not be empty
Date: Sat, 24 Dec 2016 19:53:00 +0000
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Hiren Panchasara <hiren@FreeBSD.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|freebsd-bugs@FreeBSD.org |freebsd-net@FreeBSD.org
CC| |hiren@FreeBSD.org
--- Comment #1 from Hiren Panchasara <hiren@FreeBSD.org> ---
Peter, which test causes this? Any way I can reprod this?
--=20
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Subject: Re: How to configure another loopback device?
From: Hiroki Sato <hrs@FreeBSD.org>
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<31938292.1421737.1482589536048@mail.yahoo.com>
<252311393.1502179.1482604113540@mail.yahoo.com>
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John Dison <jdison16@yahoo.com> wrote
in <252311393.1502179.1482604113540@mail.yahoo.com>:
jd> > Does adding ifconfig_lo0="inet 127.0.0.1/8" to /etc/rc.conf work?
jd>
jd> Yes, adding ifconfig_lo0="inet 127.0.0.1/8" helps indeed.
jd>
jd> Interesting is that if I also add ifconfig_lo0_ipv6="inet6 ::1/128"
jd> then ::1/128 will be on lo1. If I do not add that line, it will be on lo0.
jd>
jd> Looks weird but that workaround work. Thanks.
Here are the reasons:
- 127.0.0.1/8 will be configured on lo0 in rc.d scripts if
ifconfig_lo0 is missing after processing ifconfig_IF and before
doing ifconfig_IF_alias*.
- You cannot manually configure ::1/128 because it is configured by
the kernel when a loopback interface becomes "up". If you have an
ifconfig_lo1 and no ifconfig_lo0, ifconfig_lo1 will be processed
and make lo1 "up" first.
-- Hiroki
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Subject: [Bug 215513] panic: SACK scoreboard must not be empty
Date: Sat, 24 Dec 2016 22:50:54 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D215513
Michael Tuexen <tuexen@freebsd.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tuexen@freebsd.org
--- Comment #2 from Michael Tuexen <tuexen@freebsd.org> ---
(In reply to Peter Holm from comment #0)
Any change to get a pcap or pcapng tracefile which triggers the issue? I wo=
uld
like to reproduce this with packetdrill...
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