From: Jay Vosburgh <jay.vosburgh@canonical.com>
To: joamaki@gmail.com
Cc: bpf@vger.kernel.org, netdev@vger.kernel.org,
daniel@iogearbox.net, andy@greyhouse.net, vfalico@gmail.com,
andrii@kernel.org, maciej.fijalkowski@intel.com,
magnus.karlsson@intel.com
Subject: Re: [PATCH bpf-next v2 0/4] XDP bonding support
Date: Thu, 01 Jul 2021 11:20:01 -0700 [thread overview]
Message-ID: <31459.1625163601@famine> (raw)
In-Reply-To: <20210624091843.5151-1-joamaki@gmail.com>
joamaki@gmail.com wrote:
>From: Jussi Maki <joamaki@gmail.com>
>
>This patchset introduces XDP support to the bonding driver.
>
>The motivation for this change is to enable use of bonding (and
>802.3ad) in hairpinning L4 load-balancers such as [1] implemented with
>XDP and also to transparently support bond devices for projects that
>use XDP given most modern NICs have dual port adapters. An alternative
>to this approach would be to implement 802.3ad in user-space and
>implement the bonding load-balancing in the XDP program itself, but
>is rather a cumbersome endeavor in terms of slave device management
>(e.g. by watching netlink) and requires separate programs for native
>vs bond cases for the orchestrator. A native in-kernel implementation
>overcomes these issues and provides more flexibility.
>
>Below are benchmark results done on two machines with 100Gbit
>Intel E810 (ice) NIC and with 32-core 3970X on sending machine, and
>16-core 3950X on receiving machine. 64 byte packets were sent with
>pktgen-dpdk at full rate. Two issues [2, 3] were identified with the
>ice driver, so the tests were performed with iommu=off and patch [2]
>applied. Additionally the bonding round robin algorithm was modified
>to use per-cpu tx counters as high CPU load (50% vs 10%) and high rate
>of cache misses were caused by the shared rr_tx_counter. Fix for this
>has been already merged into net-next. The statistics were collected
>using "sar -n dev -u 1 10".
>
> -----------------------| CPU |--| rxpck/s |--| txpck/s |----
> without patch (1 dev):
> XDP_DROP: 3.15% 48.6Mpps
> XDP_TX: 3.12% 18.3Mpps 18.3Mpps
> XDP_DROP (RSS): 9.47% 116.5Mpps
> XDP_TX (RSS): 9.67% 25.3Mpps 24.2Mpps
> -----------------------
> with patch, bond (1 dev):
> XDP_DROP: 3.14% 46.7Mpps
> XDP_TX: 3.15% 13.9Mpps 13.9Mpps
> XDP_DROP (RSS): 10.33% 117.2Mpps
> XDP_TX (RSS): 10.64% 25.1Mpps 24.0Mpps
> -----------------------
> with patch, bond (2 devs):
> XDP_DROP: 6.27% 92.7Mpps
> XDP_TX: 6.26% 17.6Mpps 17.5Mpps
> XDP_DROP (RSS): 11.38% 117.2Mpps
> XDP_TX (RSS): 14.30% 28.7Mpps 27.4Mpps
> --------------------------------------------------------------
To be clear, the fact that the performance numbers for XDP_DROP
and XDP_TX are lower for "with patch, bond (1 dev)" than "without patch
(1 dev)" is expected, correct?
-J
>RSS: Receive Side Scaling, e.g. the packets were sent to a range of
>destination IPs.
>
>[1]: https://cilium.io/blog/2021/05/20/cilium-110#standalonelb
>[2]: https://lore.kernel.org/bpf/20210601113236.42651-1-maciej.fijalkowski@intel.com/T/#t
>[3]: https://lore.kernel.org/bpf/CAHn8xckNXci+X_Eb2WMv4uVYjO2331UWB2JLtXr_58z0Av8+8A@mail.gmail.com/
>
>Patch 1 prepares bond_xmit_hash for hashing xdp_buff's
>Patch 2 adds hooks to implement redirection after bpf prog run
>Patch 3 implements the hooks in the bonding driver.
>Patch 4 modifies devmap to properly handle EXCLUDE_INGRESS with a slave device.
>
>v1->v2:
>- Split up into smaller easier to review patches and address cosmetic
> review comments.
>- Drop the INDIRECT_CALL optimization as it showed little improvement in tests.
>- Drop the rr_tx_counter patch as that has already been merged into net-next.
>- Separate the test suite into another patch set. This will follow later once a
> patch set from Magnus Karlsson is merged and provides test utilities that can
> be reused for XDP bonding tests. v2 contains no major functional changes and
> was tested with the test suite included in v1.
> (https://lore.kernel.org/bpf/202106221509.kwNvAAZg-lkp@intel.com/T/#m464146d47299125d5868a08affd6d6ce526dfad1)
>
>---
>
>Jussi Maki (4):
> net: bonding: Refactor bond_xmit_hash for use with xdp_buff
> net: core: Add support for XDP redirection to slave device
> net: bonding: Add XDP support to the bonding driver
> devmap: Exclude XDP broadcast to master device
>
> drivers/net/bonding/bond_main.c | 431 +++++++++++++++++++++++++++-----
> include/linux/filter.h | 13 +-
> include/linux/netdevice.h | 5 +
> include/net/bonding.h | 1 +
> kernel/bpf/devmap.c | 34 ++-
> net/core/filter.c | 25 ++
> 6 files changed, 445 insertions(+), 64 deletions(-)
>
>--
>2.27.0
---
-Jay Vosburgh, jay.vosburgh@canonical.com
next prev parent reply other threads:[~2021-07-01 18:20 UTC|newest]
Thread overview: 71+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-09 13:55 [PATCH bpf-next 0/3] XDP bonding support Jussi Maki
2021-06-09 13:55 ` [PATCH bpf-next 1/3] net: bonding: Add XDP support to the bonding driver Jussi Maki
2021-06-09 22:29 ` Maciej Fijalkowski
2021-06-09 23:29 ` Jay Vosburgh
2021-06-14 8:02 ` Jussi Maki
2021-06-17 3:40 ` kernel test robot
2021-06-17 6:35 ` kernel test robot
2021-06-22 7:24 ` kernel test robot
2021-06-09 13:55 ` [PATCH bpf-next 2/3] net: bonding: Use per-cpu rr_tx_counter Jussi Maki
2021-06-10 0:04 ` Jay Vosburgh
2021-06-14 7:54 ` Jussi Maki
2021-06-09 13:55 ` [PATCH bpf-next 3/3] selftests/bpf: Add tests for XDP bonding Jussi Maki
2021-06-09 22:07 ` Maciej Fijalkowski
2021-06-14 8:08 ` Jussi Maki
2021-06-14 8:48 ` Magnus Karlsson
2021-06-14 12:20 ` Jussi Maki
2021-06-10 17:24 ` [PATCH bpf-next 0/3] XDP bonding support Andrii Nakryiko
2021-06-14 12:25 ` Jussi Maki
2021-06-14 15:37 ` Jay Vosburgh
2021-06-15 5:34 ` Andrii Nakryiko
2021-06-24 9:18 ` [PATCH bpf-next v2 0/4] " joamaki
2021-06-24 9:18 ` [PATCH bpf-next v2 1/4] net: bonding: Refactor bond_xmit_hash for use with xdp_buff joamaki
2021-06-24 9:18 ` [PATCH bpf-next v2 2/4] net: core: Add support for XDP redirection to slave device joamaki
2021-06-24 9:18 ` [PATCH bpf-next v2 3/4] net: bonding: Add XDP support to the bonding driver joamaki
2021-06-24 9:18 ` [PATCH bpf-next v2 4/4] devmap: Exclude XDP broadcast to master device joamaki
2021-07-01 18:12 ` Jay Vosburgh
2021-07-05 11:44 ` Jussi Maki
2021-07-01 18:20 ` Jay Vosburgh [this message]
2021-07-05 10:32 ` [PATCH bpf-next v2 0/4] XDP bonding support Jussi Maki
2021-07-07 11:25 ` [PATCH bpf-next v3 0/5] " Jussi Maki
2021-07-07 11:25 ` [PATCH bpf-next v3 1/5] net: bonding: Refactor bond_xmit_hash for use with xdp_buff Jussi Maki
2021-07-07 11:25 ` [PATCH bpf-next v3 2/5] net: core: Add support for XDP redirection to slave device Jussi Maki
2021-07-07 11:25 ` [PATCH bpf-next v3 3/5] net: bonding: Add XDP support to the bonding driver Jussi Maki
2021-07-13 7:14 ` kernel test robot
2021-07-07 11:25 ` [PATCH bpf-next v3 4/5] devmap: Exclude XDP broadcast to master device Jussi Maki
2021-07-07 11:25 ` [PATCH bpf-next v3 5/5] net: core: Allow netdev_lower_get_next_private_rcu in bh context Jussi Maki
2021-07-28 23:43 ` [PATCH bpf-next v4 0/6] XDP bonding support joamaki
2021-07-28 23:43 ` [PATCH bpf-next v4 1/6] net: bonding: Refactor bond_xmit_hash for use with xdp_buff joamaki
2021-07-28 23:43 ` [PATCH bpf-next v4 2/6] net: core: Add support for XDP redirection to slave device joamaki
2021-07-28 23:43 ` [PATCH bpf-next v4 3/6] net: bonding: Add XDP support to the bonding driver joamaki
2021-07-28 23:43 ` [PATCH bpf-next v4 4/6] devmap: Exclude XDP broadcast to master device joamaki
2021-07-28 23:43 ` [PATCH bpf-next v4 5/6] net: core: Allow netdev_lower_get_next_private_rcu in bh context joamaki
2021-07-28 23:43 ` [PATCH bpf-next v4 6/6] selftests/bpf: Add tests for XDP bonding joamaki
2021-08-03 0:19 ` Andrii Nakryiko
2021-08-03 9:40 ` Jussi Maki
2021-07-30 6:18 ` [PATCH bpf-next v5 0/7] XDP bonding support Jussi Maki
2021-07-30 6:18 ` [PATCH bpf-next v5 1/7] net: bonding: Refactor bond_xmit_hash for use with xdp_buff Jussi Maki
2021-07-30 6:18 ` [PATCH bpf-next v5 2/7] net: core: Add support for XDP redirection to slave device Jussi Maki
2021-07-30 6:18 ` [PATCH bpf-next v5 3/7] net: bonding: Add XDP support to the bonding driver Jussi Maki
2021-07-30 6:18 ` [PATCH bpf-next v5 4/7] devmap: Exclude XDP broadcast to master device Jussi Maki
2021-07-30 6:18 ` [PATCH bpf-next v5 5/7] net: core: Allow netdev_lower_get_next_private_rcu in bh context Jussi Maki
2021-07-30 6:18 ` [PATCH bpf-next v5 6/7] selftests/bpf: Fix xdp_tx.c prog section name Jussi Maki
2021-08-04 23:35 ` Andrii Nakryiko
2021-07-30 6:18 ` [PATCH bpf-next v5 7/7] selftests/bpf: Add tests for XDP bonding Jussi Maki
2021-08-04 23:33 ` Andrii Nakryiko
2021-07-31 5:57 ` [PATCH bpf-next v6 0/7]: XDP bonding support Jussi Maki
2021-07-31 5:57 ` [PATCH bpf-next v6 1/7] net: bonding: Refactor bond_xmit_hash for use with xdp_buff Jussi Maki
2021-08-11 1:52 ` Jonathan Toppins
2021-08-11 8:22 ` Jussi Maki
2021-08-11 14:05 ` Jonathan Toppins
2021-08-16 9:05 ` Jussi Maki
2021-07-31 5:57 ` [PATCH bpf-next v6 2/7] net: core: Add support for XDP redirection to slave device Jussi Maki
2021-07-31 5:57 ` [PATCH bpf-next v6 3/7] net: bonding: Add XDP support to the bonding driver Jussi Maki
2021-07-31 5:57 ` [PATCH bpf-next v6 4/7] devmap: Exclude XDP broadcast to master device Jussi Maki
2021-07-31 5:57 ` [PATCH bpf-next v6 5/7] net: core: Allow netdev_lower_get_next_private_rcu in bh context Jussi Maki
2021-07-31 5:57 ` [PATCH bpf-next v6 6/7] selftests/bpf: Fix xdp_tx.c prog section name Jussi Maki
2021-08-06 22:53 ` Andrii Nakryiko
2021-07-31 5:57 ` [PATCH bpf-next v6 7/7] selftests/bpf: Add tests for XDP bonding Jussi Maki
2021-08-06 22:50 ` Andrii Nakryiko
2021-08-09 14:24 ` Jussi Maki
2021-08-09 21:41 ` Daniel Borkmann
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