Commit graph

27 commits

Author SHA1 Message Date
Russell King
0f239ea029 net: dsa: fix unintended change of bridge interface STP state
[ Upstream commit 9c2054a5cf415a9dc32c91ffde78399955deb571 ]

When a DSA port is added to a bridge and brought up, the resulting STP
state programmed into the hardware depends on the order that these
operations are performed.  However, the Linux bridge code believes that
the port is in disabled mode.

If the DSA port is first added to a bridge and then brought up, it will
be in blocking mode.  If it is brought up and then added to the bridge,
it will be in disabled mode.

This difference is caused by DSA always setting the STP mode in
dsa_port_enable() whether or not this port is part of a bridge.  Since
bridge always sets the STP state when the port is added, brought up or
taken down, it is unnecessary for us to manipulate the STP state.

Apparently, this code was copied from Rocker, and the very next day a
similar fix for Rocker was merged but was not propagated to DSA.  See
e47172ab7e ("rocker: put port in FORWADING state after leaving bridge")

Fixes: b73adef677 ("net: dsa: integrate with SWITCHDEV for HW bridging")
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Vivien Didelot <vivien.didelot@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-01-27 14:50:26 +01:00
Petr Machata
da0efa8888 dsa: port: Ignore bridge VLAN events
A follow-up patch enables emitting VLAN notifications for the bridge CPU
port in addition to the existing slave port notifications. These
notifications have orig_dev set to the bridge in question.

Because there's no specific support for these VLANs, just ignore the
notifications to maintain the current behavior.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-31 14:13:43 -04:00
Florian Fainelli
cf96357303 net: dsa: Allow providing PHY statistics from CPU port
Implement the same type of ethtool diversion that we have for
ETH_SS_STATS and make it work with ETH_SS_PHY_STATS. This allows
providing PHY level statistics for CPU ports that are directly
connecting to a PHY device.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-27 11:53:03 -04:00
Florian Fainelli
6207a78c09 net: dsa: Add helper function to obtain PHY device of a given port
In preparation for having more call sites attempting to obtain a
reference against a PHY device corresponding to a particular port,
introduce a helper function for that purpose.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-27 11:53:03 -04:00
Sebastian Reichel
33615367f3 net: dsa: Support internal phy on 'cpu' port
This adds support for enabling the internal PHY for a 'cpu' port.
It has been tested on GE B850v3,  B650v3 and B450v3, which have a
built-in MV88E6240 switch hardwired to a PCIe based network card.
On these machines the internal PHY of the i210 network card and
the Marvell switch are connected to each other and must be enabled
for properly using the switch. While the i210 PHY will be enabled
when the network interface is enabled, the switch's port is not
exposed as network interface. Additionally the mv88e6xxx driver
resets the chip during probe, so the PHY is disabled without this
patch.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-23 19:22:38 -05:00
Andrew Lunn
2ea7a679ca net: dsa: Don't add vlans when vlan filtering is disabled
The software bridge can be build with vlan filtering support
included. However, by default it is turned off. In its turned off
state, it still passes VLANs via switchev, even though they are not to
be used. Don't pass these VLANs to the hardware. Only do so when vlan
filtering is enabled.

This fixes at least one corner case. There are still issues in other
corners, such as when vlan_filtering is later enabled.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-10 14:28:13 +09:00
Andrew Lunn
bb9f603174 net: dsa: add more const attributes
The notify mechanism does not need to modify the port it is notifying.
So make the parameter const.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-10 13:41:40 +09:00
Vivien Didelot
57ab1ca215 net: dsa: move fixed link registration helpers
The new bindings (dsa2.c) and the old bindings (legacy.c) share two
helpers dsa_cpu_dsa_setup and dsa_cpu_dsa_destroy, used to register or
deregister a fixed PHY if a given port has a corresponding device node.

Unclutter the code by moving them into two new port.c helpers,
dsa_port_fixed_link_register_of and dsa_port_fixed_link_(un)register_of.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-10-28 18:50:12 +09:00
Vivien Didelot
fb8a6a2b8b net: dsa: add port enable and disable helpers
Provide dsa_port_enable and dsa_port_disable helpers to respectively
enable and disable a switch port. This makes the dsa_port_set_state_now
helper static.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-25 20:22:46 -07:00
Vivien Didelot
de40fc5d21 net: dsa: add port fdb dump
Dumping a DSA port's FDB entries is not specific to a DSA slave, so add
a dsa_port_fdb_dump function, similarly to dsa_port_fdb_add and
dsa_port_fdb_del.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-21 15:24:01 -07:00
Arkadi Sharshevsky
2bedde1abb net: dsa: Move FDB dump implementation inside DSA
>From all switchdev devices only DSA requires special FDB dump. This is due
to lack of ability for syncing the hardware learned FDBs with the bridge.
Due to this it is removed from switchdev and moved inside DSA.

Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-07 14:48:48 -07:00
Arkadi Sharshevsky
dc0cbff3ff net: dsa: Remove redundant MDB dump support
Currently the MDB HW database is synced with the bridge's one, thus,
There is no need to support special dump functionality.

Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-07 14:48:48 -07:00
Arkadi Sharshevsky
c069fcd82c net: dsa: Remove support for bypass bridge port attributes/vlan set
The bridge port attributes/vlan for DSA devices should be set only
from bridge code. Furthermore, The vlans are synced totally with the
bridge so there is no need for special dump support.

Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-07 14:48:48 -07:00
Arkadi Sharshevsky
2acf4e6a89 net: dsa: Remove switchdev dependency from DSA switch notifier chain
Currently, the switchdev objects are embedded inside the DSA notifier
info. This patch removes this dependency. This is done as a preparation
stage before adding support for learning FDB through the switchdev
notification chain.

Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-07 14:48:48 -07:00
Arkadi Sharshevsky
1b6dd556c3 net: dsa: Remove prepare phase for FDB
The prepare phase for FDB add is unneeded because most of DSA devices
can have failures during bus transactions (SPI, I2C, etc.), thus, the
prepare phase cannot guarantee success of the commit stage.

The support for learning FDB through notification chain, which will be
introduced in the following patches, will provide the ability to notify
back the bridge about successful offload.

Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com>
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-07 14:48:47 -07:00
Vivien Didelot
64dba236a1 net: dsa: support cross-chip ageing time
Now that the switchdev bridge ageing time attribute is propagated to all
switch chips of the fabric, each switch can check if the requested value
is valid and program itself, so that the whole fabric shares a common
ageing time setting.

This is especially needed for switch chips in between others, containing
no bridge port members but evidently used in the data path.

To achieve that, remove the condition which skips the other switches. We
also don't need to identify the target switch anymore, thus remove the
sw_index member of the dsa_notifier_ageing_time_info notifier structure.

On ZII Dev Rev B (with two 88E6352 and one 88E6185) and ZII Dev Rev C
(with two 88E6390X), we have the following hardware configuration:

    # ip link add name br0 type bridge
    # ip link set master br0 dev lan6
    br0: port 1(lan6) entered blocking state
    br0: port 1(lan6) entered disabled state
    # echo 2000 > /sys/class/net/br0/bridge/ageing_time

Before this patch:

    zii-rev-b# cat /sys/kernel/debug/mv88e6xxx/sw*/age_time
    300000
    300000
    15000

    zii-rev-c# cat /sys/kernel/debug/mv88e6xxx/sw*/age_time
    300000
    18750

After this patch:

    zii-rev-b# cat /sys/kernel/debug/mv88e6xxx/sw*/age_time
    15000
    15000
    15000

    zii-rev-c# cat /sys/kernel/debug/mv88e6xxx/sw*/age_time
    18750
    18750

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-24 16:27:47 -04:00
Vivien Didelot
d0c627b874 net: dsa: add VLAN notifier
Add two new DSA_NOTIFIER_VLAN_ADD and DSA_NOTIFIER_VLAN_DEL events to
notify not only a single switch, but all switches of a the fabric when
an VLAN entry is added or removed.

For the moment, keep the current behavior and ignore other switches.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-22 19:37:32 -04:00
Vivien Didelot
8ae5bcdc5d net: dsa: add MDB notifier
Add two new DSA_NOTIFIER_MDB_ADD and DSA_NOTIFIER_MDB_DEL events to
notify not only a single switch, but all switches of a the fabric when
an MDB entry is added or removed.

For the moment, keep the current behavior and ignore other switches.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-22 19:37:32 -04:00
Vivien Didelot
685fb6a40d net: dsa: add FDB notifier
Add two new DSA_NOTIFIER_FDB_ADD and DSA_NOTIFIER_FDB_DEL events to
notify not only a single switch, but all switches of a the fabric when
an FDB entry is added or removed.

For the moment, keep the current behavior and ignore other switches.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-22 19:37:32 -04:00
Vivien Didelot
1faabf7440 net: dsa: add notifier for ageing time
This patch keeps the port-wide ageing time handling code in
dsa_port_ageing_time, pushes the requested ageing time value in a new
switch fabric notification, and moves the switch-wide ageing time
handling code in dsa_switch_ageing_time.

This has the effect that now not only the switch that the target port
belongs to can be programmed, but all switches composing the switch
fabric. For the moment, keep the current behavior and ignore other
switches.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-22 19:37:32 -04:00
Vivien Didelot
076e713365 net: dsa: move VLAN handlers
Move the DSA port code which handles VLAN objects in port.c, where it
belongs.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-22 19:37:32 -04:00
Vivien Didelot
3a9afea37e net: dsa: move MDB handlers
Move the DSA port code which handles MDB objects in port.c, where it
belongs.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-22 19:37:32 -04:00
Vivien Didelot
d1cffff008 net: dsa: move FDB handlers
Move the DSA port code which handles FDB objects in port.c, where it
belongs.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-22 19:37:32 -04:00
Vivien Didelot
d87bd94e1c net: dsa: move ageing time setter
Move the DSA port code which sets a port ageing time in port.c, where it
belongs.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-22 19:37:32 -04:00
Vivien Didelot
4d61d3043b net: dsa: move VLAN filtering setter
Move the DSA port code which sets VLAN filtering on a port in port.c,
where it belongs.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-22 19:37:32 -04:00
Vivien Didelot
cfbed329be net: dsa: move bridging routines
Move the DSA port code which bridges a port in port.c, where it belongs.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-22 19:37:32 -04:00
Vivien Didelot
a40c175b4a net: dsa: move port state setters
Add a new port.c file to hold all DSA port-wide logic. This patch moves
in the code which sets a port state.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-22 19:37:32 -04:00