Commit Graph

23 Commits

Author SHA1 Message Date
Kristof Provost
d5b08e13dd pfctl: Revert "pfctl: Another set skip <group> fix"
This reverts commit 0c156a3c32.
This fix broke using '<ifgroup>:network' in tables.

MFC after:	1 week
2021-04-27 09:05:14 +02:00
Kristof Provost
6fcc8e042a pf: Allow multiple labels to be set on a rule
Allow up to 5 labels to be set on each rule.
This offers more flexibility in using labels. For example, it replaces
the customer 'schedule' keyword used by pfSense to terminate states
according to a schedule.

Reviewed by:	glebius
MFC after:	2 weeks
Sponsored by:	Rubicon Communications, LLC ("Netgate")
Differential Revision:	https://reviews.freebsd.org/D29936
2021-04-26 14:14:21 +02:00
Kurosawa Takahiro
2aa21096c7 pf: Implement the NAT source port selection of MAP-E Customer Edge
MAP-E (RFC 7597) requires special care for selecting source ports
in NAT operation on the Customer Edge because a part of bits of the port
numbers are used by the Border Relay to distinguish another side of the
IPv4-over-IPv6 tunnel.

PR:		254577
Reviewed by:	kp
Differential Revision:	https://reviews.freebsd.org/D29468
2021-04-13 10:53:18 +02:00
Kurosawa Takahiro
600bd6ce06 pfctl, libpfctl: introduce pfctl_pool
Introduce pfctl_pool to be able to extend the pool part of the pf rule
without breaking the ABI.

Reviewed by:	kp
MFC after:	4 weeks
Differential Revision:	https://reviews.freebsd.org/D29721
2021-04-12 18:30:29 +02:00
Kristof Provost
e9eb09414a libpfctl: Switch to pfctl_rule
Stop using the kernel's struct pf_rule, switch to libpfctl's pfctl_rule.
Now that we use nvlists to communicate with the kernel these structures
can be fully decoupled.

Reviewed by:	glebius
MFC after:	4 weeks
Sponsored by:	Rubicon Communications, LLC ("Netgate")
Differential Revision:	https://reviews.freebsd.org/D29644
2021-04-10 11:16:02 +02:00
Kristof Provost
0c156a3c32 pfctl: Another set skip <group> fix
When retrieving the list of group members we cannot simply use
ifa_lookup(), because it expects the interface to have an IP (v4 or v6)
address. This means that interfaces with no address are not found.
This presents as interfacing being alternately marked as skip and not
whenever the rules are re-loaded.

Happily we only need to fix ifa_grouplookup(). Teach it to also accept
AF_LINK (i.e. interface) node_hosts.

PR:     	250994
MFC after:	3 days
2021-01-11 22:30:44 +01:00
Kristof Provost
8fd675d8a0 pfctl: Call ifa_load() before ifa_grouplookup()
ifa_grouplookup() uses the data loaded in ifa_load() (through is_a_group()), so
we must call ifa_load() before we can rely on any of the data it populates.

Submitted by:	Nick Rogers
MFC after:	1 week
Sponsored by:	RG Nets
2020-04-19 15:37:13 +00:00
Kristof Provost
681652667a pfctl: Remove unused variable
Submitted by:	Nick Rogers
MFC after:	1 week
Sponsored by:	RG Nets
2020-04-19 15:32:14 +00:00
Kristof Provost
d2568b024d pfctl: improve rule load times with thousands of interfaces
r343287 / D18759 introduced ifa_add_groups_to_map() which is now run by
ifa_load/ifa_lookup/host_if. When loading an anchor or ruleset via pfctl that
does NOT contain ifnames as hosts, host() still ends up iterating all
interfaces twice, grabbing SIOCGIFGROUP ioctl twice for each. This adds an
unnecessary amount of time on systems with thousands or tens of thousands of
interfaces.

Prioritize the IPv4/6 check over the interface name lookup, which skips loading
the iftab and iterating all interfaces when the configuration does not contain
interface names.

Submitted by:	Nick Rogers
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D24100
2020-03-19 12:54:43 +00:00
Kristof Provost
4c8fb952b5 pfctl: Fix ifa_grouplookup()
Setting the length of the request got lost in r343287, which means SIOCGIFGMEMB
gives us the required length, but does not copy the names of the group members.
As a result we don't get a correct list of group members, and 'set skip on
<ifgroup>' broke.

This produced all sorts of very unexpected results, because we would end up
applying 'set skip' to unexpected interfaces.

X-MFC-with:	r343287
2019-02-10 21:22:55 +00:00
Patrick Kelsey
1d34c9dac8 Reduce pf.conf parsing cost for configs that define N queues from O(N^2) to O(N)
The number of syscalls made during parsing of any config that
defines tables is also reduced, and incorrect warnings that HFSC
parent queue bandwidths were smaller than the sum of their child
bandwidths have been fixed.

Reviewed by:	kp
MFC after:	1 week
Sponsored by:	RG Nets
Differential Revision:	https://reviews.freebsd.org/D18759
2019-01-22 00:50:24 +00:00
Kristof Provost
0f9e47a9c4 pfctl: Populate ifname in ifa_lookup()
pfctl_adjust_skip_ifaces() relies on this name.

MFC after:	2 weeks
2018-11-08 21:53:09 +00:00
Kristof Provost
99eb00558a pf: Make ':0' ignore link-local v6 addresses too
When users mark an interface to not use aliases they likely also don't
want to use the link-local v6 address there.

PR:		201695
Submitted by:	Russell Yount <Russell.Yount AT gmail.com>
Differential Revision:	https://reviews.freebsd.org/D17633
2018-10-28 05:32:50 +00:00
Kristof Provost
fa1d4439f9 pf: Return non-zero from 'status' if pf is not enabled
In the pf rc.d script the output of `/etc/rc.d/pf status` or `/etc/rc.d/pf
onestatus` always provided an exit status of zero. This made it fiddly to
programmatically determine if pf was running or not.

Return a non-zero status if the pf module is not loaded, extend pfctl to have
an option to return an error status if pf is not enabled.

PR:		228632
Submitted by:	James Park-Watt <jimmypw AT gmail.com>
MFC after:	1 week
2018-06-06 19:36:37 +00:00
Pedro F. Giffuni
1de7b4b805 various: general adoption of SPDX licensing ID tags.
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

No functional change intended.
2017-11-27 15:37:16 +00:00
Kristof Provost
813196a11a pf: remove fastroute tag
The tag fastroute came from ipf and was removed in OpenBSD in 2011. The code
allows to skip the in pfil hooks and completely removes the out pfil invoke,
albeit looking up a route that the IP stack will likely find on its own.
The code between IPv4 and IPv6 is also inconsistent and marked as "XXX"
for years.

Submitted by:	Franco Fichtner <franco@opnsense.org>
Differential Revision:	https://reviews.freebsd.org/D8058
2016-10-04 19:35:14 +00:00
Kristof Provost
13cfafabf4 pfctl: Make most global variables static.
This will make it easier to link as a library.

Submitted by:	Christian Mauderer <christian.mauderer@embedded-brains.de>
2016-08-04 19:24:44 +00:00
Kristof Provost
72a3cf0f41 pfctl: Use const where possible.
This adds const qualifiers where it is possible.

Submitted by:	Christian Mauderer <christian.mauderer@embedded-brains.de>
2016-08-02 20:32:02 +00:00
Kristof Provost
3e248e0fb4 pf: Filter on and set vlan PCP values
Adopt the OpenBSD syntax for setting and filtering on VLAN PCP values. This
introduces two new keywords: 'set prio' to set the PCP value, and 'prio' to
filter on it.

Reviewed by:    allanjude, araujo
Approved by:	re (gjb)
Obtained from:  OpenBSD (mostly)
Differential Revision:  https://reviews.freebsd.org/D6786
2016-06-17 18:21:55 +00:00
Marcelo Araujo
c52ee6c23b Use nitems() from sys/param.h.
MFC after:	2 weeks.
2016-04-19 06:32:35 +00:00
Kristof Provost
64b3b4d611 pf: Remove support for 'scrub fragment crop|drop-ovl'
The crop/drop-ovl fragment scrub modes are not very useful and likely to confuse
users into making poor choices.
It's also a fairly large amount of complex code, so just remove the support
altogether.

Users who have 'scrub fragment crop|drop-ovl' in their pf configuration will be
implicitly converted to 'scrub fragment reassemble'.

Reviewed by:	gnn, eri
Relnotes:	yes
Differential Revision:	https://reviews.freebsd.org/D3466
2015-08-27 21:27:47 +00:00
Bjoern A. Zeeb
f870cb7f3b Use feature_present(3) to determine whether to open an INET or an
INET6 socket when needed to allow pfctl to work on noinet and noinet6
kernels (and try to provide a fallback using AF_LINK as best effort).
Adjust the Makefile to also respect relevant src.conf(5) options
for compile time decisions on INET and INET6 support.

Reviewed by:	glebius (no objections)
MFC after:	1 week
2013-12-26 15:51:14 +00:00
Gleb Smirnoff
3b3a8eb937 o Create directory sys/netpfil, where all packet filters should
reside, and move there ipfw(4) and pf(4).

o Move most modified parts of pf out of contrib.

Actual movements:

sys/contrib/pf/net/*.c		-> sys/netpfil/pf/
sys/contrib/pf/net/*.h		-> sys/net/
contrib/pf/pfctl/*.c		-> sbin/pfctl
contrib/pf/pfctl/*.h		-> sbin/pfctl
contrib/pf/pfctl/pfctl.8	-> sbin/pfctl
contrib/pf/pfctl/*.4		-> share/man/man4
contrib/pf/pfctl/*.5		-> share/man/man5

sys/netinet/ipfw		-> sys/netpfil/ipfw

The arguable movement is pf/net/*.h -> sys/net. There are
future plans to refactor pf includes, so I decided not to
break things twice.

Not modified bits of pf left in contrib: authpf, ftp-proxy,
tftp-proxy, pflogd.

The ipfw(4) movement is planned to be merged to stable/9,
to make head and stable match.

Discussed with:		bz, luigi
2012-09-14 11:51:49 +00:00