From: Florian Fainelli <f.fainelli@gmail.com>
To: Vladimir Oltean <olteanv@gmail.com>,
Jakub Kicinski <kuba@kernel.org>,
"David S. Miller" <davem@davemloft.net>
Cc: Andrew Lunn <andrew@lunn.ch>,
Vivien Didelot <vivien.didelot@gmail.com>,
Tobias Waldekranz <tobias@waldekranz.com>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
Roopa Prabhu <roopa@nvidia.com>,
Nikolay Aleksandrov <nikolay@nvidia.com>,
Jiri Pirko <jiri@resnulli.us>, Ido Schimmel <idosch@idosch.org>,
Alexandre Belloni <alexandre.belloni@bootlin.com>,
UNGLinuxDriver@microchip.com, Vadym Kochan <vkochan@marvell.com>,
Taras Chornyi <tchornyi@marvell.com>,
Grygorii Strashko <grygorii.strashko@ti.com>,
Vignesh Raghavendra <vigneshr@ti.com>,
Ioana Ciornei <ioana.ciornei@nxp.com>,
Ivan Vecera <ivecera@redhat.com>,
linux-omap@vger.kernel.org,
Vladimir Oltean <vladimir.oltean@nxp.com>
Subject: Re: [RFC PATCH v2 net-next 07/16] net: dsa: sync ageing time when joining the bridge
Date: Fri, 19 Mar 2021 15:13:03 -0700 [thread overview]
Message-ID: <7bc2c277-e75c-35e7-23d7-78616757177e@gmail.com> (raw)
In-Reply-To: <20210318231829.3892920-8-olteanv@gmail.com>
On 3/18/2021 4:18 PM, Vladimir Oltean wrote:
> From: Vladimir Oltean <vladimir.oltean@nxp.com>
>
> The SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME attribute is only emitted from:
>
> sysfs/ioctl/netlink
> -> br_set_ageing_time
> -> __set_ageing_time
>
> therefore not at bridge port creation time, so:
> (a) drivers had to hardcode the initial value for the address ageing time,
> because they didn't get any notification
> (b) that hardcoded value can be out of sync, if the user changes the
> ageing time before enslaving the port to the bridge
>
> Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
> ---
> include/linux/if_bridge.h | 6 ++++++
> net/bridge/br_stp.c | 13 +++++++++++++
> net/dsa/port.c | 10 ++++++++++
> 3 files changed, 29 insertions(+)
>
> diff --git a/include/linux/if_bridge.h b/include/linux/if_bridge.h
> index 920d3a02cc68..ebd16495459c 100644
> --- a/include/linux/if_bridge.h
> +++ b/include/linux/if_bridge.h
> @@ -137,6 +137,7 @@ struct net_device *br_fdb_find_port(const struct net_device *br_dev,
> void br_fdb_clear_offload(const struct net_device *dev, u16 vid);
> bool br_port_flag_is_set(const struct net_device *dev, unsigned long flag);
> u8 br_port_get_stp_state(const struct net_device *dev);
> +clock_t br_get_ageing_time(struct net_device *br_dev);
> #else
> static inline struct net_device *
> br_fdb_find_port(const struct net_device *br_dev,
> @@ -160,6 +161,11 @@ static inline u8 br_port_get_stp_state(const struct net_device *dev)
> {
> return BR_STATE_DISABLED;
> }
> +
> +static inline clock_t br_get_ageing_time(struct net_device *br_dev)
> +{
> + return 0;
> +}
> #endif
>
> #endif
> diff --git a/net/bridge/br_stp.c b/net/bridge/br_stp.c
> index 86b5e05d3f21..3dafb6143cff 100644
> --- a/net/bridge/br_stp.c
> +++ b/net/bridge/br_stp.c
> @@ -639,6 +639,19 @@ int br_set_ageing_time(struct net_bridge *br, clock_t ageing_time)
> return 0;
> }
>
> +clock_t br_get_ageing_time(struct net_device *br_dev)
> +{
> + struct net_bridge *br;
> +
> + if (!netif_is_bridge_master(br_dev))
> + return 0;
> +
> + br = netdev_priv(br_dev);
> +
> + return jiffies_to_clock_t(br->ageing_time);
Don't you want an ASSERT_RTNL() in this function as well?
--
Florian
next prev parent reply other threads:[~2021-03-19 22:13 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-18 23:18 [RFC PATCH v2 net-next 00/16] Better support for sandwiched LAGs with bridge and DSA Vladimir Oltean
2021-03-18 23:18 ` [RFC PATCH v2 net-next 01/16] net: dsa: call dsa_port_bridge_join when joining a LAG that is already in a bridge Vladimir Oltean
2021-03-19 22:04 ` Florian Fainelli
2021-03-22 10:24 ` Tobias Waldekranz
2021-03-18 23:18 ` [RFC PATCH v2 net-next 02/16] net: dsa: pass extack to dsa_port_{bridge,lag}_join Vladimir Oltean
2021-03-19 22:05 ` Florian Fainelli
2021-03-22 10:25 ` Tobias Waldekranz
2021-03-18 23:18 ` [RFC PATCH v2 net-next 03/16] net: dsa: inherit the actual bridge port flags at join time Vladimir Oltean
2021-03-19 22:08 ` Florian Fainelli
2021-03-20 10:05 ` Vladimir Oltean
2021-03-18 23:18 ` [RFC PATCH v2 net-next 04/16] net: dsa: sync up with bridge port's STP state when joining Vladimir Oltean
2021-03-19 22:11 ` Florian Fainelli
2021-03-22 10:29 ` Tobias Waldekranz
2021-03-18 23:18 ` [RFC PATCH v2 net-next 05/16] net: dsa: sync up VLAN filtering state when joining the bridge Vladimir Oltean
2021-03-19 22:11 ` Florian Fainelli
2021-03-22 10:30 ` Tobias Waldekranz
2021-03-18 23:18 ` [RFC PATCH v2 net-next 06/16] net: dsa: sync multicast router " Vladimir Oltean
2021-03-19 22:12 ` Florian Fainelli
2021-03-22 11:17 ` Tobias Waldekranz
2021-03-22 11:43 ` Vladimir Oltean
2021-03-18 23:18 ` [RFC PATCH v2 net-next 07/16] net: dsa: sync ageing time " Vladimir Oltean
2021-03-19 22:13 ` Florian Fainelli [this message]
2021-03-20 10:09 ` Vladimir Oltean
2021-03-22 11:20 ` Tobias Waldekranz
2021-03-18 23:18 ` [RFC PATCH v2 net-next 08/16] net: dsa: replay port and host-joined mdb entries " Vladimir Oltean
2021-03-19 22:20 ` Florian Fainelli
2021-03-20 9:53 ` Vladimir Oltean
2021-03-22 15:56 ` Florian Fainelli
2021-03-18 23:18 ` [RFC PATCH v2 net-next 09/16] net: dsa: replay port and local fdb " Vladimir Oltean
2021-03-22 15:44 ` Tobias Waldekranz
2021-03-22 16:19 ` Vladimir Oltean
2021-03-22 17:07 ` Tobias Waldekranz
2021-03-22 17:13 ` Vladimir Oltean
2021-03-18 23:18 ` [RFC PATCH v2 net-next 10/16] net: dsa: replay VLANs installed on port " Vladimir Oltean
2021-03-19 22:24 ` Florian Fainelli
2021-03-18 23:18 ` [RFC PATCH v2 net-next 11/16] net: ocelot: support multiple bridges Vladimir Oltean
2021-03-18 23:18 ` [RFC PATCH v2 net-next 12/16] net: ocelot: call ocelot_netdevice_bridge_join when joining a bridged LAG Vladimir Oltean
2021-03-18 23:18 ` [RFC PATCH v2 net-next 13/16] net: ocelot: replay switchdev events when joining bridge Vladimir Oltean
2021-03-18 23:18 ` [RFC PATCH v2 net-next 14/16] net: dsa: don't set skb->offload_fwd_mark when not offloading the bridge Vladimir Oltean
2021-03-19 8:52 ` DENG Qingfang
2021-03-19 9:06 ` Vladimir Oltean
2021-03-19 9:29 ` DENG Qingfang
2021-03-19 10:49 ` Vladimir Oltean
2021-03-22 8:04 ` DENG Qingfang
2021-03-22 22:23 ` Vladimir Oltean
2021-03-22 16:06 ` Florian Fainelli
2021-03-18 23:18 ` [RFC PATCH v2 net-next 15/16] net: dsa: return -EOPNOTSUPP when driver does not implement .port_lag_join Vladimir Oltean
2021-03-22 15:51 ` Florian Fainelli
2021-03-22 15:58 ` Tobias Waldekranz
2021-03-18 23:18 ` [RFC PATCH v2 net-next 16/16] net: bridge: switchdev: let drivers inform which bridge ports are offloaded Vladimir Oltean
2021-03-22 16:30 ` Tobias Waldekranz
2021-03-22 17:19 ` Vladimir Oltean
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