netdev.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Tobias Waldekranz <tobias@waldekranz.com>
To: davem@davemloft.net, kuba@kernel.org
Cc: andrew@lunn.ch, vivien.didelot@gmail.com, f.fainelli@gmail.com,
	olteanv@gmail.com, roopa@nvidia.com, nikolay@nvidia.com,
	netdev@vger.kernel.org
Subject: [RFC net-next 2/7] net: bridge: switchdev: Include local flag in FDB notifications
Date: Sat, 16 Jan 2021 02:25:10 +0100	[thread overview]
Message-ID: <20210116012515.3152-3-tobias@waldekranz.com> (raw)
In-Reply-To: <20210116012515.3152-1-tobias@waldekranz.com>

Some switchdev drivers, notably DSA, ignore all dynamically learned
address notifications (!added_by_user) as these are autonomously added
by the switch. Previously, such a notification was indistinguishable
from a local address notification. Include a local bit in the
notification so that the two classes can be discriminated.

This allows DSA-like devices to add local addresses to the hardware
FDB (with the CPU as the destination), thereby avoiding flows towards
the CPU being flooded by the switch as unknown unicast.

Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
---
 include/net/switchdev.h   | 1 +
 net/bridge/br_switchdev.c | 1 +
 2 files changed, 2 insertions(+)

diff --git a/include/net/switchdev.h b/include/net/switchdev.h
index 88fcac140966..43e4469a17b1 100644
--- a/include/net/switchdev.h
+++ b/include/net/switchdev.h
@@ -213,6 +213,7 @@ struct switchdev_notifier_fdb_info {
 	const unsigned char *addr;
 	u16 vid;
 	u8 added_by_user:1,
+	   local:1,
 	   offloaded:1;
 };
 
diff --git a/net/bridge/br_switchdev.c b/net/bridge/br_switchdev.c
index ff470add8e52..1090bb3d4ee0 100644
--- a/net/bridge/br_switchdev.c
+++ b/net/bridge/br_switchdev.c
@@ -109,6 +109,7 @@ br_switchdev_fdb_notify(const struct net_bridge_fdb_entry *fdb, int type)
 		.addr = fdb->key.addr.addr,
 		.vid = fdb->key.vlan_id,
 		.added_by_user = test_bit(BR_FDB_ADDED_BY_USER, &fdb->flags),
+		.local = test_bit(BR_FDB_LOCAL, &fdb->flags),
 		.offloaded = test_bit(BR_FDB_OFFLOADED, &fdb->flags),
 	};
 
-- 
2.17.1


  parent reply	other threads:[~2021-01-16  1:26 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-16  1:25 [RFC net-next 0/7] net: dsa: Sync local bridge FDB addresses to hardware Tobias Waldekranz
2021-01-16  1:25 ` [RFC net-next 1/7] net: bridge: switchdev: Refactor br_switchdev_fdb_notify Tobias Waldekranz
2021-01-17 17:24   ` Vladimir Oltean
2021-01-16  1:25 ` Tobias Waldekranz [this message]
2021-01-17 19:30   ` [RFC net-next 2/7] net: bridge: switchdev: Include local flag in FDB notifications Vladimir Oltean
2021-01-18 18:58     ` Tobias Waldekranz
2021-01-18 19:27       ` Vladimir Oltean
2021-01-18 20:19         ` Tobias Waldekranz
2021-01-18 21:03           ` Vladimir Oltean
2021-01-18 21:17           ` Nikolay Aleksandrov
2021-01-18 21:22             ` Nikolay Aleksandrov
2021-01-18 21:39               ` Nikolay Aleksandrov
2021-01-18 21:50                 ` Vladimir Oltean
2021-01-18 21:53                   ` Nikolay Aleksandrov
2021-01-18 22:06                     ` Vladimir Oltean
2021-01-18 22:09                       ` Vladimir Oltean
2021-01-18 22:42                       ` Nikolay Aleksandrov
2021-01-19  0:42                         ` Vladimir Oltean
2021-01-19 10:14                           ` Nikolay Aleksandrov
2021-01-18 19:28     ` Ido Schimmel
2021-01-16  1:25 ` [RFC net-next 3/7] net: bridge: switchdev: Send FDB notifications for host addresses Tobias Waldekranz
2021-01-18 11:28   ` Vladimir Oltean
2021-01-16  1:25 ` [RFC net-next 4/7] net: dsa: Include local addresses in assisted CPU port learning Tobias Waldekranz
2021-01-16  1:25 ` [RFC net-next 5/7] net: dsa: Include bridge " Tobias Waldekranz
2021-01-16  1:25 ` [RFC net-next 6/7] net: dsa: Sync static FDB entries on foreign interfaces to hardware Tobias Waldekranz
2021-01-16  1:25 ` [RFC net-next 7/7] net: dsa: mv88e6xxx: Request assisted learning on CPU port Tobias Waldekranz
2021-02-01  6:24 ` DENG Qingfang
2021-02-03  9:27   ` Tobias Waldekranz
2021-02-03 10:14     ` Vladimir Oltean
2021-02-03 10:42       ` Tobias Waldekranz

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=20210116012515.3152-3-tobias@waldekranz.com \
    --to=tobias@waldekranz.com \
    --cc=andrew@lunn.ch \
    --cc=davem@davemloft.net \
    --cc=f.fainelli@gmail.com \
    --cc=kuba@kernel.org \
    --cc=netdev@vger.kernel.org \
    --cc=nikolay@nvidia.com \
    --cc=olteanv@gmail.com \
    --cc=roopa@nvidia.com \
    --cc=vivien.didelot@gmail.com \
    --subject='Re: [RFC net-next 2/7] net: bridge: switchdev: Include local flag in FDB notifications' \
    /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).