From: Tobias Waldekranz <tobias@waldekranz.com>
To: Vladimir Oltean <olteanv@gmail.com>
Cc: davem@davemloft.net, kuba@kernel.org,
Andrew Lunn <andrew@lunn.ch>,
Vivien Didelot <vivien.didelot@gmail.com>,
Florian Fainelli <f.fainelli@gmail.com>,
Jiri Pirko <jiri@resnulli.us>, Ivan Vecera <ivecera@redhat.com>,
Roopa Prabhu <roopa@nvidia.com>,
Nikolay Aleksandrov <razor@blackwall.org>,
Russell King <linux@armlinux.org.uk>,
Petr Machata <petrm@nvidia.com>, Ido Schimmel <idosch@nvidia.com>,
Matt Johnston <matt@codeconstruct.com.au>,
Cooper Lees <me@cooperlees.com>,
linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
bridge@lists.linux-foundation.org
Subject: Re: [PATCH v4 net-next 09/15] net: dsa: Never offload FDB entries on standalone ports
Date: Tue, 15 Mar 2022 23:26:59 +0100 [thread overview]
Message-ID: <87ee32lumk.fsf@waldekranz.com> (raw)
In-Reply-To: <20220315163349.k2rmfdzrd3jvzbor@skbuf>
On Tue, Mar 15, 2022 at 18:33, Vladimir Oltean <olteanv@gmail.com> wrote:
> On Tue, Mar 15, 2022 at 01:25:37AM +0100, Tobias Waldekranz wrote:
>> If a port joins a bridge that it can't offload, it will fallback to
>> standalone mode and software bridging. In this case, we never want to
>> offload any FDB entries to hardware either.
>>
>> Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
>> ---
>
> When you resend, please send this patch separately, unless something
> breaks really ugly with your MST series in place.
Sure. I found this while testing the software fallback. It prevents a
segfault in dsa_port_bridge_host_fdb_add, which (rightly, I think)
assumes that dp->bridge is valid. I feel like this should have a Fixes:
tag, but I'm not sure which commit to blame. Any suggestions?
>> net/dsa/slave.c | 3 +++
>> 1 file changed, 3 insertions(+)
>>
>> diff --git a/net/dsa/slave.c b/net/dsa/slave.c
>> index a61a7c54af20..647adee97f7f 100644
>> --- a/net/dsa/slave.c
>> +++ b/net/dsa/slave.c
>> @@ -2624,6 +2624,9 @@ static int dsa_slave_fdb_event(struct net_device *dev,
>> if (ctx && ctx != dp)
>> return 0;
>>
>> + if (!dp->bridge)
>> + return 0;
>> +
>> if (switchdev_fdb_is_dynamically_learned(fdb_info)) {
>> if (dsa_port_offloads_bridge_port(dp, orig_dev))
>> return 0;
>> --
>> 2.25.1
>>
next prev parent reply other threads:[~2022-03-15 22:27 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-15 0:25 [PATCH v4 net-next 00/15] net: bridge: Multiple Spanning Trees Tobias Waldekranz
2022-03-15 0:25 ` [PATCH v4 net-next 01/15] net: bridge: mst: Multiple Spanning Tree (MST) mode Tobias Waldekranz
2022-03-15 0:25 ` [PATCH v4 net-next 02/15] net: bridge: mst: Allow changing a VLAN's MSTI Tobias Waldekranz
2022-03-15 0:25 ` [PATCH v4 net-next 03/15] net: bridge: mst: Support setting and reporting MST port states Tobias Waldekranz
2022-03-15 9:52 ` Nikolay Aleksandrov
2022-03-15 16:54 ` Vladimir Oltean
2022-03-15 22:35 ` Tobias Waldekranz
2022-03-15 0:25 ` [PATCH v4 net-next 04/15] net: bridge: mst: Notify switchdev drivers of MST mode changes Tobias Waldekranz
2022-03-15 5:32 ` Jakub Kicinski
2022-03-15 22:28 ` Tobias Waldekranz
2022-03-15 0:25 ` [PATCH v4 net-next 05/15] net: bridge: mst: Notify switchdev drivers of VLAN MSTI migrations Tobias Waldekranz
2022-03-15 0:25 ` [PATCH v4 net-next 06/15] net: bridge: mst: Notify switchdev drivers of MST state changes Tobias Waldekranz
2022-03-15 0:25 ` [PATCH v4 net-next 07/15] net: bridge: mst: Add helper to map an MSTI to a VID set Tobias Waldekranz
2022-03-15 0:25 ` [PATCH v4 net-next 08/15] net: bridge: mst: Add helper to check if MST is enabled Tobias Waldekranz
2022-03-15 0:25 ` [PATCH v4 net-next 09/15] net: dsa: Never offload FDB entries on standalone ports Tobias Waldekranz
2022-03-15 16:33 ` Vladimir Oltean
2022-03-15 22:26 ` Tobias Waldekranz [this message]
2022-03-15 22:42 ` Vladimir Oltean
2022-03-15 22:57 ` Tobias Waldekranz
2022-03-15 0:25 ` [PATCH v4 net-next 10/15] net: dsa: Validate hardware support for MST Tobias Waldekranz
2022-03-15 17:11 ` Vladimir Oltean
2022-03-16 9:15 ` Tobias Waldekranz
2022-03-16 13:03 ` Vladimir Oltean
2022-03-15 0:25 ` [PATCH v4 net-next 11/15] net: dsa: Pass VLAN MSTI migration notifications to driver Tobias Waldekranz
2022-03-15 0:25 ` [PATCH v4 net-next 12/15] net: dsa: Handle MST state changes Tobias Waldekranz
2022-03-15 16:42 ` Vladimir Oltean
2022-03-15 16:44 ` Vladimir Oltean
2022-03-16 9:45 ` Tobias Waldekranz
2022-03-16 9:51 ` Tobias Waldekranz
2022-03-16 13:02 ` Vladimir Oltean
2022-03-15 0:25 ` [PATCH v4 net-next 13/15] net: dsa: mv88e6xxx: Disentangle STU from VTU Tobias Waldekranz
2022-03-15 0:25 ` [PATCH v4 net-next 14/15] net: dsa: mv88e6xxx: Export STU as devlink region Tobias Waldekranz
2022-03-15 0:25 ` [PATCH v4 net-next 15/15] net: dsa: mv88e6xxx: MST Offloading 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=87ee32lumk.fsf@waldekranz.com \
--to=tobias@waldekranz.com \
--cc=andrew@lunn.ch \
--cc=bridge@lists.linux-foundation.org \
--cc=davem@davemloft.net \
--cc=f.fainelli@gmail.com \
--cc=idosch@nvidia.com \
--cc=ivecera@redhat.com \
--cc=jiri@resnulli.us \
--cc=kuba@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux@armlinux.org.uk \
--cc=matt@codeconstruct.com.au \
--cc=me@cooperlees.com \
--cc=netdev@vger.kernel.org \
--cc=olteanv@gmail.com \
--cc=petrm@nvidia.com \
--cc=razor@blackwall.org \
--cc=roopa@nvidia.com \
--cc=vivien.didelot@gmail.com \
/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
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
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).