From: Roopa Prabhu <roopa@nvidia.com>
To: <davem@davemloft.net>, <kuba@kernel.org>
Cc: <netdev@vger.kernel.org>, <stephen@networkplumber.org>,
<nikolay@cumulusnetworks.com>, <idosch@nvidia.com>,
<dsahern@gmail.com>, <bpoirier@nvidia.com>
Subject: [PATCH net-next v3 00/12] vxlan metadata device vnifiltering support
Date: Tue, 1 Mar 2022 05:04:27 +0000 [thread overview]
Message-ID: <20220301050439.31785-1-roopa@nvidia.com> (raw)
This series adds vnifiltering support to vxlan collect metadata device.
Motivation:
You can only use a single vxlan collect metadata device for a given
vxlan udp port in the system today. The vxlan collect metadata device
terminates all received vxlan packets. As shown in the below diagram,
there are use-cases where you need to support multiple such vxlan devices in
independent bridge domains. Each vxlan device must terminate the vni's
it is configured for.
Example usecase: In a service provider network a service provider
typically supports multiple bridge domains with overlapping vlans.
One bridge domain per customer. Vlans in each bridge domain are
mapped to globally unique vxlan ranges assigned to each customer.
This series adds vnifiltering support to collect metadata devices to
terminate only configured vnis. This is similar to vlan filtering in
bridge driver. The vni filtering capability is provided by a new flag on
collect metadata device.
In the below pic:
- customer1 is mapped to br1 bridge domain
- customer2 is mapped to br2 bridge domain
- customer1 vlan 10-11 is mapped to vni 1001-1002
- customer2 vlan 10-11 is mapped to vni 2001-2002
- br1 and br2 are vlan filtering bridges
- vxlan1 and vxlan2 are collect metadata devices with
vnifiltering enabled
┌──────────────────────────────────────────────────────────────────┐
│ switch │
│ │
│ ┌───────────┐ ┌───────────┐ │
│ │ │ │ │ │
│ │ br1 │ │ br2 │ │
│ └┬─────────┬┘ └──┬───────┬┘ │
│ vlans│ │ vlans │ │ │
│ 10,11│ │ 10,11│ │ │
│ │ vlanvnimap: │ vlanvnimap: │
│ │ 10-1001,11-1002 │ 10-2001,11-2002 │
│ │ │ │ │ │
│ ┌──────┴┐ ┌──┴─────────┐ ┌───┴────┐ │ │
│ │ swp1 │ │vxlan1 │ │ swp2 │ ┌┴─────────────┐ │
│ │ │ │ vnifilter:│ │ │ │vxlan2 │ │
│ └───┬───┘ │ 1001,1002│ └───┬────┘ │ vnifilter: │ │
│ │ └────────────┘ │ │ 2001,2002 │ │
│ │ │ └──────────────┘ │
│ │ │ │
└───────┼──────────────────────────────────┼───────────────────────┘
│ │
│ │
┌─────┴───────┐ │
│ customer1 │ ┌─────┴──────┐
│ host/VM │ │customer2 │
└─────────────┘ │ host/VM │
└────────────┘
v2:
- remove stale xstats declarations pointed out by Nikolay Aleksandrov
- squash selinux patch with the tunnel api patch as pointed out by
benjamin poirier
- Fix various build issues:
Reported-by: kernel test robot <lkp@intel.com>
v3:
- incorporate review feedback from Jakub
- move rhashtable declarations to c file
- define and use netlink policy for top level vxlan filter api
- fix unused stats function warning
- pass vninode from vnifilter lookup into stats count function
to avoid another lookup (only applicable to vxlan_rcv)
- fix missing vxlan vni delete notifications in vnifilter uninit
function
- misc cleanups
- remote dev check for multicast groups added via vnifiltering api
Nikolay Aleksandrov (2):
drivers: vxlan: vnifilter: per vni stats
drivers: vxlan: vnifilter: add support for stats dumping
Roopa Prabhu (10):
vxlan: move to its own directory
vxlan_core: fix build warnings in vxlan_xmit_one
vxlan_core: move common declarations to private header file
vxlan_core: move some fdb helpers to non-static
vxlan_core: make multicast helper take rip and ifindex explicitly
vxlan_core: add helper vxlan_vni_in_use
rtnetlink: add new rtm tunnel api for tunnel id filtering
vxlan_multicast: Move multicast helpers to a separate file
vxlan: vni filtering support on collect metadata device
selftests: add new tests for vxlan vnifiltering
drivers/net/Makefile | 2 +-
drivers/net/vxlan/Makefile | 7 +
drivers/net/{vxlan.c => vxlan/vxlan_core.c} | 434 +++-----
drivers/net/vxlan/vxlan_multicast.c | 272 +++++
drivers/net/vxlan/vxlan_private.h | 162 +++
drivers/net/vxlan/vxlan_vnifilter.c | 999 ++++++++++++++++++
include/net/vxlan.h | 54 +-
include/uapi/linux/if_link.h | 49 +
include/uapi/linux/rtnetlink.h | 9 +
security/selinux/nlmsgtab.c | 5 +-
.../selftests/net/test_vxlan_vnifiltering.sh | 581 ++++++++++
11 files changed, 2309 insertions(+), 265 deletions(-)
create mode 100644 drivers/net/vxlan/Makefile
rename drivers/net/{vxlan.c => vxlan/vxlan_core.c} (94%)
create mode 100644 drivers/net/vxlan/vxlan_multicast.c
create mode 100644 drivers/net/vxlan/vxlan_private.h
create mode 100644 drivers/net/vxlan/vxlan_vnifilter.c
create mode 100755 tools/testing/selftests/net/test_vxlan_vnifiltering.sh
--
2.25.1
next reply other threads:[~2022-03-01 5:05 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-01 5:04 Roopa Prabhu [this message]
2022-03-01 5:04 ` [PATCH net-next v3 01/12] vxlan: move to its own directory Roopa Prabhu
2022-03-01 5:04 ` [PATCH net-next v3 02/12] vxlan_core: fix build warnings in vxlan_xmit_one Roopa Prabhu
2022-03-01 5:04 ` [PATCH net-next v3 03/12] vxlan_core: move common declarations to private header file Roopa Prabhu
2022-03-01 5:04 ` [PATCH net-next v3 04/12] vxlan_core: move some fdb helpers to non-static Roopa Prabhu
2022-03-01 5:04 ` [PATCH net-next v3 05/12] vxlan_core: make multicast helper take rip and ifindex explicitly Roopa Prabhu
2022-03-01 5:04 ` [PATCH net-next v3 06/12] vxlan_core: add helper vxlan_vni_in_use Roopa Prabhu
2022-03-01 5:04 ` [PATCH net-next v3 07/12] rtnetlink: add new rtm tunnel api for tunnel id filtering Roopa Prabhu
2022-03-01 5:04 ` [PATCH net-next v3 08/12] vxlan_multicast: Move multicast helpers to a separate file Roopa Prabhu
2022-03-01 5:04 ` [PATCH net-next v3 09/12] vxlan: vni filtering support on collect metadata device Roopa Prabhu
2022-03-01 5:04 ` [PATCH net-next v3 10/12] selftests: add new tests for vxlan vnifiltering Roopa Prabhu
2022-03-01 5:04 ` [PATCH net-next v3 11/12] drivers: vxlan: vnifilter: per vni stats Roopa Prabhu
2022-03-01 5:04 ` [PATCH net-next v3 12/12] drivers: vxlan: vnifilter: add support for stats dumping Roopa Prabhu
2022-03-01 8:50 ` [PATCH net-next v3 00/12] vxlan metadata device vnifiltering support patchwork-bot+netdevbpf
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