History log of /freebsd/usr.bin/netstat/route.c (Results 101 – 125 of 310)
Revision (<<< Hide revision tags) (Show revision tags >>>) Date Author Comments
# 6a068746 15-May-2012 Alexander Motin <mav@FreeBSD.org>

MFC


# 38f1b189 26-Apr-2012 Peter Grehan <grehan@FreeBSD.org>

IFC @ r234692

sys/amd64/include/cpufunc.h
sys/amd64/include/fpu.h
sys/amd64/amd64/fpu.c
sys/amd64/vmm/vmm.c

- Add API to allow vmm FPU state init/save/restore.

FP stuff discussed with: kib


Revision tags: release/8.3.0_cvs, release/8.3.0
# e17d7df8 17-Feb-2012 Bjoern A. Zeeb <bz@FreeBSD.org>

Merge multi-FIB IPv6 support from projects/multi-fibv6/head/:

Extend the so far IPv4-only support for multiple routing tables (FIBs)
introduced in r178888 to IPv6 providing feature parity.

This inc

Merge multi-FIB IPv6 support from projects/multi-fibv6/head/:

Extend the so far IPv4-only support for multiple routing tables (FIBs)
introduced in r178888 to IPv6 providing feature parity.

This includes an extended rtalloc(9) KPI for IPv6, the necessary
adjustments to the network stack, and user land support as in netstat.

Sponsored by: Cisco Systems, Inc.
Reviewed by: melifaro (basically)
MFC after: 10 days

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# 4fd5619b 03-Feb-2012 Bjoern A. Zeeb <bz@FreeBSD.org>

Teach netstat -r (display contents of routing tables) about multi-FIB for
IPv6 in addition to IPv4.
While here harmonize naming of variables a bit with what we use in kernel.

Sponsored by: Cisco Sys

Teach netstat -r (display contents of routing tables) about multi-FIB for
IPv6 in addition to IPv4.
While here harmonize naming of variables a bit with what we use in kernel.

Sponsored by: Cisco Systems, Inc.

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Revision tags: release/9.0.0, release/7.4.0_cvs, release/8.2.0_cvs, release/7.4.0, release/8.2.0
# cd05232a 20-Jan-2011 Hajimu UMEMOTO <ume@FreeBSD.org>

- Hide the internal scope address representation of the KAME IPv6
stack from the output of `netstat -ani'.
- The node-local multicast address in the output of `netstat -rn'
should be handled as w

- Hide the internal scope address representation of the KAME IPv6
stack from the output of `netstat -ani'.
- The node-local multicast address in the output of `netstat -rn'
should be handled as well.

Spotted by: Bernd Walter <ticso__at__cicely7.cicely.de>

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# da52b4ca 11-Dec-2010 Joel Dahl <joel@FreeBSD.org>

Remove the advertising clause from UCB copyrighted files in usr.bin. This
is in accordance with the information provided at
ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change

Also add $F

Remove the advertising clause from UCB copyrighted files in usr.bin. This
is in accordance with the information provided at
ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change

Also add $FreeBSD$ to a few files to keep svn happy.

Discussed with: imp, rwatson

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Revision tags: release/8.1.0_cvs, release/8.1.0, release/7.3.0_cvs, release/7.3.0
# 1a0fda2b 04-Mar-2010 Dag-Erling Smørgrav <des@FreeBSD.org>

IFH@204581


# 821df508 13-Dec-2009 Xin LI <delphij@FreeBSD.org>

Revert most part of 200420 as requested, as more review and polish is
needed.


# 6f2d3221 12-Dec-2009 Xin LI <delphij@FreeBSD.org>

Remove unneeded header includes from usr.bin/ except contributed code.

Tested with: make universe


Revision tags: release/8.0.0_cvs, release/8.0.0
# 874108ae 12-Nov-2009 Oleksandr Tymoshenko <gonzo@FreeBSD.org>

MFC @199204


# 4b94fa78 18-Oct-2009 Robert Watson <rwatson@FreeBSD.org>

Merge r198118 from head to stable/8:

Print routing statistics as unsigned short rather than unsigned int,
otherwise sign extension leads to unlikely values when in the negative
range of the si

Merge r198118 from head to stable/8:

Print routing statistics as unsigned short rather than unsigned int,
otherwise sign extension leads to unlikely values when in the negative
range of the signed short structure fields that hold the statistics.
The type used to hold routing statistics is arguably also incorrect.

Approved by: re (bz)

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# c8359dde 15-Oct-2009 Robert Watson <rwatson@FreeBSD.org>

Print routing statistics as unsigned short rather than unsigned int,
otherwise sign extension leads to unlikely values when in the negative
range of the signed short structure fields that hold the st

Print routing statistics as unsigned short rather than unsigned int,
otherwise sign extension leads to unlikely values when in the negative
range of the signed short structure fields that hold the statistics.
The type used to hold routing statistics is arguably also incorrect.

MFC after: 3 days

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# 10b3b545 17-Sep-2009 Dag-Erling Smørgrav <des@FreeBSD.org>

Merge from head


# 7d4b968b 17-Sep-2009 Dag-Erling Smørgrav <des@FreeBSD.org>

Merge from head up to r188941 (last revision before the USB stack switch)


# 7e857dd1 12-Jun-2009 Oleksandr Tymoshenko <gonzo@FreeBSD.org>

- Merge from HEAD


# c2c2a7c1 01-Jun-2009 Bjoern A. Zeeb <bz@FreeBSD.org>

Convert the two dimensional array to be malloced and introduce
an accessor function to get the correct rnh pointer back.

Update netstat to get the correct pointer using kvm_read()
as well.

This not

Convert the two dimensional array to be malloced and introduce
an accessor function to get the correct rnh pointer back.

Update netstat to get the correct pointer using kvm_read()
as well.

This not only fixes the ABI problem depending on the kernel
option but also permits the tunable to overwrite the kernel
option at boot time up to MAXFIBS, enlarging the number of
FIBs without having to recompile. So people could just use
GENERIC now.

Reviewed by: julian, rwatson, zec
X-MFC: not possible

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Revision tags: release/7.2.0_cvs, release/7.2.0, release/7.1.0_cvs, release/7.1.0
# 41fe50f5 20-Dec-2008 Sam Leffler <sam@FreeBSD.org>

MFH @ 186335


# 6e6b3f7c 15-Dec-2008 Qing Li <qingli@FreeBSD.org>

This main goals of this project are:
1. separating L2 tables (ARP, NDP) from the L3 routing tables
2. removing as much locking dependencies among these layers as
possible to allow for some paralle

This main goals of this project are:
1. separating L2 tables (ARP, NDP) from the L3 routing tables
2. removing as much locking dependencies among these layers as
possible to allow for some parallelism in the search operations
3. simplify the logic in the routing code,

The most notable end result is the obsolescent of the route
cloning (RTF_CLONING) concept, which translated into code reduction
in both IPv4 ARP and IPv6 NDP related modules, and size reduction in
struct rtentry{}. The change in design obsoletes the semantics of
RTF_CLONING, RTF_WASCLONE and RTF_LLINFO routing flags. The userland
applications such as "arp" and "ndp" have been modified to reflect
those changes. The output from "netstat -r" shows only the routing
entries.

Quite a few developers have contributed to this project in the
past: Glebius Smirnoff, Luigi Rizzo, Alessandro Cerri, and
Andre Oppermann. And most recently:

- Kip Macy revised the locking code completely, thus completing
the last piece of the puzzle, Kip has also been conducting
active functional testing
- Sam Leffler has helped me improving/refactoring the code, and
provided valuable reviews
- Julian Elischer setup the perforce tree for me and has helped
me maintaining that branch before the svn conversion

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Revision tags: release/6.4.0_cvs, release/6.4.0
# 1c109628 17-Oct-2008 Xin LI <delphij@FreeBSD.org>

Use strlcpy() when we mean it.


# dd335a15 01-Sep-2008 David E. O'Brien <obrien@FreeBSD.org>

Minimize changes CURRENT<->releng7.


# 5d699a28 10-May-2008 Xin LI <delphij@FreeBSD.org>

Fix build.


# a15370c6 10-May-2008 Julian Elischer <julian@FreeBSD.org>

Add code to allow the system to handle multiple routing tables.
This particular implementation is designed to be fully backwards compatible
and to be MFC-able to 7.x (and 6.x)

Currently the only pro

Add code to allow the system to handle multiple routing tables.
This particular implementation is designed to be fully backwards compatible
and to be MFC-able to 7.x (and 6.x)

Currently the only protocol that can make use of the multiple tables is IPv4
Similar functionality exists in OpenBSD and Linux.

From my notes:

-----

One thing where FreeBSD has been falling behind, and which by chance I
have some time to work on is "policy based routing", which allows
different
packet streams to be routed by more than just the destination address.

Constraints:
------------

I want to make some form of this available in the 6.x tree
(and by extension 7.x) , but FreeBSD in general needs it so I might as
well do it in -current and back port the portions I need.

One of the ways that this can be done is to have the ability to
instantiate multiple kernel routing tables (which I will now
refer to as "Forwarding Information Bases" or "FIBs" for political
correctness reasons). Which FIB a particular packet uses to make
the next hop decision can be decided by a number of mechanisms.
The policies these mechanisms implement are the "Policies" referred
to in "Policy based routing".

One of the constraints I have if I try to back port this work to
6.x is that it must be implemented as a EXTENSION to the existing
ABIs in 6.x so that third party applications do not need to be
recompiled in timespan of the branch.

This first version will not have some of the bells and whistles that
will come with later versions. It will, for example, be limited to 16
tables in the first commit.
Implementation method, Compatible version. (part 1)
-------------------------------
For this reason I have implemented a "sufficient subset" of a
multiple routing table solution in Perforce, and back-ported it
to 6.x. (also in Perforce though not always caught up with what I
have done in -current/P4). The subset allows a number of FIBs
to be defined at compile time (8 is sufficient for my purposes in 6.x)
and implements the changes needed to allow IPV4 to use them. I have not
done the changes for ipv6 simply because I do not need it, and I do not
have enough knowledge of ipv6 (e.g. neighbor discovery) needed to do it.

Other protocol families are left untouched and should there be
users with proprietary protocol families, they should continue to work
and be oblivious to the existence of the extra FIBs.

To understand how this is done, one must know that the current FIB
code starts everything off with a single dimensional array of
pointers to FIB head structures (One per protocol family), each of
which in turn points to the trie of routes available to that family.

The basic change in the ABI compatible version of the change is to
extent that array to be a 2 dimensional array, so that
instead of protocol family X looking at rt_tables[X] for the
table it needs, it looks at rt_tables[Y][X] when for all
protocol families except ipv4 Y is always 0.
Code that is unaware of the change always just sees the first row
of the table, which of course looks just like the one dimensional
array that existed before.

The entry points rtrequest(), rtalloc(), rtalloc1(), rtalloc_ign()
are all maintained, but refer only to the first row of the array,
so that existing callers in proprietary protocols can continue to
do the "right thing".
Some new entry points are added, for the exclusive use of ipv4 code
called in_rtrequest(), in_rtalloc(), in_rtalloc1() and in_rtalloc_ign(),
which have an extra argument which refers the code to the correct row.

In addition, there are some new entry points (currently called
rtalloc_fib() and friends) that check the Address family being
looked up and call either rtalloc() (and friends) if the protocol
is not IPv4 forcing the action to row 0 or to the appropriate row
if it IS IPv4 (and that info is available). These are for calling
from code that is not specific to any particular protocol. The way
these are implemented would change in the non ABI preserving code
to be added later.

One feature of the first version of the code is that for ipv4,
the interface routes show up automatically on all the FIBs, so
that no matter what FIB you select you always have the basic
direct attached hosts available to you. (rtinit() does this
automatically).

You CAN delete an interface route from one FIB should you want
to but by default it's there. ARP information is also available
in each FIB. It's assumed that the same machine would have the
same MAC address, regardless of which FIB you are using to get
to it.

This brings us as to how the correct FIB is selected for an outgoing
IPV4 packet.

Firstly, all packets have a FIB associated with them. if nothing
has been done to change it, it will be FIB 0. The FIB is changed
in the following ways.

Packets fall into one of a number of classes.

1/ locally generated packets, coming from a socket/PCB.
Such packets select a FIB from a number associated with the
socket/PCB. This in turn is inherited from the process,
but can be changed by a socket option. The process in turn
inherits it on fork. I have written a utility call setfib
that acts a bit like nice..

setfib -3 ping target.example.com # will use fib 3 for ping.

It is an obvious extension to make it a property of a jail
but I have not done so. It can be achieved by combining the setfib and
jail commands.

2/ packets received on an interface for forwarding.
By default these packets would use table 0,
(or possibly a number settable in a sysctl(not yet)).
but prior to routing the firewall can inspect them (see below).
(possibly in the future you may be able to associate a FIB
with packets received on an interface.. An ifconfig arg, but not yet.)

3/ packets inspected by a packet classifier, which can arbitrarily
associate a fib with it on a packet by packet basis.
A fib assigned to a packet by a packet classifier
(such as ipfw) would over-ride a fib associated by
a more default source. (such as cases 1 or 2).

4/ a tcp listen socket associated with a fib will generate
accept sockets that are associated with that same fib.

5/ Packets generated in response to some other packet (e.g. reset
or icmp packets). These should use the FIB associated with the
packet being reponded to.

6/ Packets generated during encapsulation.
gif, tun and other tunnel interfaces will encapsulate using the FIB
that was in effect withthe proces that set up the tunnel.
thus setfib 1 ifconfig gif0 [tunnel instructions]
will set the fib for the tunnel to use to be fib 1.

Routing messages would be associated with their
process, and thus select one FIB or another.
messages from the kernel would be associated with the fib they
refer to and would only be received by a routing socket associated
with that fib. (not yet implemented)

In addition Netstat has been edited to be able to cope with the
fact that the array is now 2 dimensional. (It looks in system
memory using libkvm (!)). Old versions of netstat see only the first FIB.

In addition two sysctls are added to give:
a) the number of FIBs compiled in (active)
b) the default FIB of the calling process.

Early testing experience:
-------------------------

Basically our (IronPort's) appliance does this functionality already
using ipfw fwd but that method has some drawbacks.

For example,
It can't fully simulate a routing table because it can't influence the
socket's choice of local address when a connect() is done.

Testing during the generating of these changes has been
remarkably smooth so far. Multiple tables have co-existed
with no notable side effects, and packets have been routes
accordingly.

ipfw has grown 2 new keywords:

setfib N ip from anay to any
count ip from any to any fib N

In pf there seems to be a requirement to be able to give symbolic names to the
fibs but I do not have that capacity. I am not sure if it is required.

SCTP has interestingly enough built in support for this, called VRFs
in Cisco parlance. it will be interesting to see how that handles it
when it suddenly actually does something.

Where to next:
--------------------

After committing the ABI compatible version and MFCing it, I'd
like to proceed in a forward direction in -current. this will
result in some roto-tilling in the routing code.

Firstly: the current code's idea of having a separate tree per
protocol family, all of the same format, and pointed to by the
1 dimensional array is a bit silly. Especially when one considers that
there is code that makes assumptions about every protocol having the
same internal structures there. Some protocols don't WANT that
sort of structure. (for example the whole idea of a netmask is foreign
to appletalk). This needs to be made opaque to the external code.

My suggested first change is to add routing method pointers to the
'domain' structure, along with information pointing the data.
instead of having an array of pointers to uniform structures,
there would be an array pointing to the 'domain' structures
for each protocol address domain (protocol family),
and the methods this reached would be called. The methods would have
an argument that gives FIB number, but the protocol would be free
to ignore it.

When the ABI can be changed it raises the possibilty of the
addition of a fib entry into the "struct route". Currently,
the structure contains the sockaddr of the desination, and the resulting
fib entry. To make this work fully, one could add a fib number
so that given an address and a fib, one can find the third element, the
fib entry.

Interaction with the ARP layer/ LL layer would need to be
revisited as well. Qing Li has been working on this already.

This work was sponsored by Ironport Systems/Cisco

PR:
Reviewed by: several including rwatson, bz and mlair (parts each)
Approved by:
Obtained from: Ironport systems/Cisco
MFC after:
Security:

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Revision tags: release/7.0.0_cvs, release/7.0.0
# 2e4760b6 14-Feb-2008 John Baldwin <jhb@FreeBSD.org>

Make netstat -rn more resilient to having the routing table change out from
under it while running. Note that this is still not perfect:
- Try to do something intelligent if kvm_read() fails to read

Make netstat -rn more resilient to having the routing table change out from
under it while running. Note that this is still not perfect:
- Try to do something intelligent if kvm_read() fails to read a routing
table structure such as an rtentry, radix_node, or ifnet.
- Don't follow left and right node pointers in radix_nodes unless
RNF_ACTIVE is set in rn_flags. This avoids walking through freed
radix_nodes.

MFC after: 1 week

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# 8a0bd6b8 11-Feb-2008 Marius Strobl <marius@FreeBSD.org>

Change another argument and a variable both related to netname() to
be also 32-bit on all archs.

MFC after: 3 days


# bc784cfe 08-Feb-2008 Marius Strobl <marius@FreeBSD.org>

Fix netname() [1] and routename() on big-endian LP64 archs.

Submitted by: Yuri Pankov [1]
MFC after: 3 days


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