[pve-devel] [RFC firewall/proxmox{-ve-rs, -firewall, -perl-rs} 00/21] autogenerate ipsets for sdn objects

[Stefan Hanreich <s.hanreich@proxmox.com>]

This patch series adds support for autogenerating ipsets for SDN objects. It
autogenerates ipsets for every VNet as follows:

* ipset containing all IP ranges of the VNet
* ipset containing all gateways of the VNet
* ipset containing all IP ranges of the subnet - except gateways
* ipset containing all dhcp ranges of the vnet

Additionally it generates an IPSet for every guest that has one or more IPAM
entries in the pve IPAM.

Those can then be used in the cluster / host / guest firewalls. Firewall rules
automatically update on changes of the SDN / IPAM configuration. This patch
series works for the old firewall as well as the new firewall.

The ipsets in nftables currently get generated as named ipsets in every table,
this means that the `nft list ruleset` output can get quite crowded for large
SDN configurations or large IPAM databases. Another option would be to only
include them as anonymous IPsets in the rules, which would make the nft output
far less crowded but this way would use more memory when making extensive use of
the sdn ipsets, since everytime it is used in a rule we create an entirely new
ipset.

The current series generates all those ipsets in the datacenter scope. My
initial approach was to introduce an separate scope (sdn/), but I changed my
mind during the development because that would require non-trivial changes in
pve-firewall, which is something I wanted to avoid. With this approach we just
pass a flag to the cluster config loading wherever we need the SDN config - we
get everything else (rule validation, API output, rule generation) for 'free'
basically.

Otherwise, the other way I see would need to introduce a completely new
parameter into all function calls, or at least a new key in the dc config. All
call sites would need privileges, due to the IPAM being in /etc/pve/priv. We
would need to parse the SDN configuration everywhere we need the cluster
configuration, since otherwise we wouldn't be able to parse / validate the
cluster configuration and then generate rules.

I'm still unsure whether the upside of having a separate scope is worth the
effort, so any input w.r.t this topic is much appreciated. Introducing a new
scope and then adapting the firewall is something I wanted to get some feedback
on before diving into it, which is why I've refrained from doing it for now.

Of course one downside is that we're kinda locking us in here with this
decision. With the new firewall adding new scopes should be a lot easier, but if
we decide to go forward with the SDN ipsets in the datacenter scope we would
need to support that as well or find some migration path.


This patch series is based on my private repositories that split the existing
proxmox-firewall package into proxmox-firewall and proxmox-ve-rs. Those can be
found in my staff repo:

staff/s.hanreich/proxmox-ve-rs.git master
staff/s.hanreich/proxmox-firewall.git no-config

Please note that I included the debian packaging commit in this patch series,
since it is new and should get reviewed as well, I suppose. It is already
included when pulling from the proxmox-ve-rs repository.

Dependencies:
* proxmox-perl-rs and proxmox-firewall depend on proxmox-ve-rs
* pve-firewall depends on proxmox-perl-rs

proxmox-ve-rs:

Stefan Hanreich (15):
  debian: add files for packaging
  firewall: add ip range types
  firewall: address: use new iprange type for ip entries
  ipset: add range variant to addresses
  iprange: add methods for converting an ip range to cidrs
  ipset: address: add helper methods
  firewall: guest: derive traits according to rust api guidelines
  common: add allowlist
  sdn: add name types
  sdn: add ipam module
  sdn: ipam: add method for generating ipsets
  sdn: add config module
  sdn: config: add method for generating ipsets
  tests: add sdn config tests
  tests: add ipam tests

 .cargo/config.toml                            |    5 +
 .gitignore                                    |    8 +
 Cargo.toml                                    |   17 +
 Makefile                                      |   69 +
 build.sh                                      |   35 +
 bump.sh                                       |   44 +
 proxmox-ve-config/Cargo.toml                  |   16 +-
 proxmox-ve-config/debian/changelog            |    5 +
 proxmox-ve-config/debian/control              |   43 +
 proxmox-ve-config/debian/copyright            |   19 +
 proxmox-ve-config/debian/debcargo.toml        |    4 +
 proxmox-ve-config/src/common/mod.rs           |   30 +
 .../src/firewall/types/address.rs             | 1171 ++++++++++++++++-
 proxmox-ve-config/src/firewall/types/alias.rs |    4 +-
 proxmox-ve-config/src/firewall/types/ipset.rs |   29 +-
 proxmox-ve-config/src/firewall/types/rule.rs  |    6 +-
 proxmox-ve-config/src/guest/types.rs          |    8 +-
 proxmox-ve-config/src/guest/vm.rs             |    8 +-
 proxmox-ve-config/src/lib.rs                  |    2 +
 proxmox-ve-config/src/sdn/config.rs           |  643 +++++++++
 proxmox-ve-config/src/sdn/ipam.rs             |  382 ++++++
 proxmox-ve-config/src/sdn/mod.rs              |  243 ++++
 proxmox-ve-config/tests/sdn/main.rs           |  189 +++
 proxmox-ve-config/tests/sdn/resources/ipam.db |   26 +
 .../tests/sdn/resources/running-config.json   |   54 +
 25 files changed, 2975 insertions(+), 85 deletions(-)
 create mode 100644 .cargo/config.toml
 create mode 100644 .gitignore
 create mode 100644 Cargo.toml
 create mode 100644 Makefile
 create mode 100755 build.sh
 create mode 100755 bump.sh
 create mode 100644 proxmox-ve-config/debian/changelog
 create mode 100644 proxmox-ve-config/debian/control
 create mode 100644 proxmox-ve-config/debian/copyright
 create mode 100644 proxmox-ve-config/debian/debcargo.toml
 create mode 100644 proxmox-ve-config/src/common/mod.rs
 create mode 100644 proxmox-ve-config/src/sdn/config.rs
 create mode 100644 proxmox-ve-config/src/sdn/ipam.rs
 create mode 100644 proxmox-ve-config/src/sdn/mod.rs
 create mode 100644 proxmox-ve-config/tests/sdn/main.rs
 create mode 100644 proxmox-ve-config/tests/sdn/resources/ipam.db
 create mode 100644 proxmox-ve-config/tests/sdn/resources/running-config.json


proxmox-firewall:

Stefan Hanreich (3):
  cargo: update dependencies
  config: tests: add support for loading sdn and ipam config
  ipsets: autogenerate ipsets for vnets and ipam

 proxmox-firewall/Cargo.toml                   |    2 +-
 proxmox-firewall/src/config.rs                |   69 +
 proxmox-firewall/src/firewall.rs              |   22 +-
 proxmox-firewall/src/object.rs                |   41 +-
 .../tests/input/.running-config.json          |   45 +
 proxmox-firewall/tests/input/ipam.db          |   32 +
 proxmox-firewall/tests/integration_tests.rs   |   10 +
 .../integration_tests__firewall.snap          | 1288 +++++++++++++++++
 proxmox-nftables/src/expression.rs            |   17 +-
 9 files changed, 1511 insertions(+), 15 deletions(-)
 create mode 100644 proxmox-firewall/tests/input/.running-config.json
 create mode 100644 proxmox-firewall/tests/input/ipam.db


pve-firewall:

Stefan Hanreich (2):
  add support for loading sdn firewall configuration
  api: load sdn ipsets

 src/PVE/API2/Firewall/Cluster.pm |  3 ++-
 src/PVE/API2/Firewall/Rules.pm   | 18 +++++++------
 src/PVE/API2/Firewall/VM.pm      |  3 ++-
 src/PVE/Firewall.pm              | 43 ++++++++++++++++++++++++++++++--
 4 files changed, 56 insertions(+), 11 deletions(-)


proxmox-perl-rs:

Stefan Hanreich (1):
  add PVE::RS::Firewall::SDN module

 pve-rs/Cargo.toml          |   1 +
 pve-rs/Makefile            |   1 +
 pve-rs/src/firewall/mod.rs |   1 +
 pve-rs/src/firewall/sdn.rs | 130 +++++++++++++++++++++++++++++++++++++
 pve-rs/src/lib.rs          |   1 +
 5 files changed, 134 insertions(+)
 create mode 100644 pve-rs/src/firewall/mod.rs
 create mode 100644 pve-rs/src/firewall/sdn.rs


Summary over all repositories:
  43 files changed, 4676 insertions(+), 111 deletions(-)

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