Netdev Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Jussi Maki <joamaki@gmail.com>
To: Jay Vosburgh <jay.vosburgh@canonical.com>
Cc: bpf <bpf@vger.kernel.org>,
	Network Development <netdev@vger.kernel.org>,
	Daniel Borkmann <daniel@iogearbox.net>,
	Andy Gospodarek <andy@greyhouse.net>,
	vfalico@gmail.com, Andrii Nakryiko <andrii@kernel.org>,
	Maciej Fijalkowski <maciej.fijalkowski@intel.com>,
	"Karlsson, Magnus" <magnus.karlsson@intel.com>
Subject: Re: [PATCH bpf-next v2 4/4] devmap: Exclude XDP broadcast to master device
Date: Mon, 5 Jul 2021 14:44:16 +0300	[thread overview]
Message-ID: <CAHn8xcmkDz9DG_s_6G9osakb5QD9O3AE46PfZTeAyi12h_s5rQ@mail.gmail.com> (raw)
In-Reply-To: <31210.1625163167@famine>

On Thu, Jul 1, 2021 at 9:12 PM Jay Vosburgh <jay.vosburgh@canonical.com> wrote:
> >+      if (static_branch_unlikely(&bpf_master_redirect_enabled_key)) {
> >+              struct net_device *master = netdev_master_upper_dev_get_rcu(dev_rx);
> >+
> >+              exclude_ifindex_master = (master && exclude_ingress) ? master->ifindex : 0;
> >+      }
> >+
>
>         Will the above logic do what is intended if the device stacking
> isn't a simple bond -> ethX arrangement?  I.e., bond -> VLAN.?? -> ethX
> or perhaps even bondA -> VLAN.?? -> bondB -> ethX ?

Good point. "bond -> VLAN -> eth" isn't an issue currently as vlan
devices do not support XDP. "bondA -> bondB -> ethX" however would be
supported, so I think it makes sense to change the code to collect all
upper devices and exclude them. I'll try to follow up with an updated
patch for this soon.

  reply	other threads:[~2021-07-05 11:44 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 [this message]
2021-07-01 18:20   ` [PATCH bpf-next v2 0/4] XDP bonding support Jay Vosburgh
2021-07-05 10:32     ` 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

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=CAHn8xcmkDz9DG_s_6G9osakb5QD9O3AE46PfZTeAyi12h_s5rQ@mail.gmail.com \
    --to=joamaki@gmail.com \
    --cc=andrii@kernel.org \
    --cc=andy@greyhouse.net \
    --cc=bpf@vger.kernel.org \
    --cc=daniel@iogearbox.net \
    --cc=jay.vosburgh@canonical.com \
    --cc=maciej.fijalkowski@intel.com \
    --cc=magnus.karlsson@intel.com \
    --cc=netdev@vger.kernel.org \
    --cc=vfalico@gmail.com \
    --subject='Re: [PATCH bpf-next v2 4/4] devmap: Exclude XDP broadcast to master device' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).