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path: root/net/dsa/slave.c
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2016-05-11dsa: Rename switch chip data to cdAndrew Lunn
The dsa_switch structure contains a dsa_chip_data member called pd. However in the rest of the code, pd is used for dsa_platform_data. This is confusing. Rename it cd, which is already often used in dsa.c and slave.c for this data type. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-11dsa: Remove master_dev from switch structureAndrew Lunn
The switch drivers only use the master_dev member for dev_info() messages. Now that the device is passed to the old style probe, and new style drivers are probed as true linux drivers, this is no longer needed. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-28net: dsa: Provide CPU port statistics to master netdevFlorian Fainelli
This patch overloads the DSA master netdev, aka CPU Ethernet MAC to also include switch-side statistics, which is useful for debugging purposes, when the switch is not properly connected to the Ethernet MAC (duplex mismatch, (RG)MII electrical issues etc.). We accomplish this by retaining the original copy of the master netdev's ethtool_ops, and just overload the 3 operations we care about: get_sset_count, get_strings and get_ethtool_stats so as to intercept these calls and call into the original master_netdev ethtool_ops, plus our own. We take this approach as opposed to providing a set of DSA helper functions that would retrive the CPU port's statistics, because the entire purpose of DSA is to allow unmodified Ethernet MAC drivers to be used as CPU conduit interfaces, therefore, statistics overlay in such drivers would simply not scale. The new ethtool -S <iface> output would therefore look like this now: <iface> statistics p<2 digits cpu port number>_<switch MIB counter names> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-19net: dsa: kill circular reference with slave privVivien Didelot
The dsa_slave_priv structure does not need a pointer to its net_device. Kill it. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-08net: dsa: make the VLAN add function return voidVivien Didelot
The switchdev design implies that a software error should not happen in the commit phase since it must have been previously reported in the prepare phase. If an hardware error occurs during the commit phase, there is nothing switchdev can do about it. The DSA layer separates port_vlan_prepare and port_vlan_add for simplicity and convenience. If an hardware error occurs during the commit phase, there is no need to report it outside the driver itself. Make the DSA port_vlan_add routine return void for explicitness. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-08net: dsa: make the FDB add function return voidVivien Didelot
The switchdev design implies that a software error should not happen in the commit phase since it must have been previously reported in the prepare phase. If an hardware error occurs during the commit phase, there is nothing switchdev can do about it. The DSA layer separates port_fdb_prepare and port_fdb_add for simplicity and convenience. If an hardware error occurs during the commit phase, there is no need to report it outside the DSA driver itself. Make the DSA port_fdb_add routine return void for explicitness. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-08net: dsa: make the STP state function return voidVivien Didelot
The DSA layer doesn't care about the return code of the port_stp_update routine, so make it void in the layer and the DSA drivers. Replace the useless dsa_slave_stp_update function with a dsa_slave_stp_state function used to reply to the switchdev SWITCHDEV_ATTR_ID_PORT_STP_STATE attribute. In the meantime, rename port_stp_update to port_stp_state_set to explicit the state change. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-14net: dsa: refine netdev event notifierVivien Didelot
Rework the netdev event handler, similar to what the Mellanox Spectrum driver does, to easily welcome more events later (for example NETDEV_PRECHANGEUPPER) and use netdev helpers (such as netif_is_bridge_master). Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Acked-by: Jiri Pirko <jiri@mellanox.com> Acked-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-14net: dsa: make port_bridge_leave return voidVivien Didelot
netdev_upper_dev_unlink() which notifies NETDEV_CHANGEUPPER, returns void, as well as del_nbp(). So there's no advantage to catch an eventual error from the port_bridge_leave routine at the DSA level. Make this routine void for the DSA layer and its existing drivers. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Acked-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-14net: dsa: rename port_*_bridge routinesVivien Didelot
Rename DSA port_join_bridge and port_leave_bridge routines to respectively port_bridge_join and port_bridge_leave in order to respect an implicit Port::Bridge namespace. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Acked-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-14dsa: slave: Don't reference NULL pointer during phy_disconnectAndrew Lunn
When the phy is disconnected, the parent pointer to the netdev it was attached to is set to NULL. The code then tries to suspend the phy, but dsa_slave_fixed_link_update needs the parent pointer to determine which switch the phy is connected to. So it dereferenced a NULL pointer. Check for this condition. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-01net: dsa: support VLAN filtering switchdev attrVivien Didelot
When a user explicitly requests VLAN filtering with something like: # echo 1 > /sys/class/net/<bridge>/bridge/vlan_filtering Switchdev propagates a SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING port attribute. Add support for it in the DSA layer with a new port_vlan_filtering function to let drivers toggle 802.1Q filtering on user demand. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-02-25net: dsa: drop vlan_getnextVivien Didelot
The VLAN GetNext operation is specific to some switches, and thus can be complicated to implement for some drivers. Remove the support for the vlan_getnext/port_pvid_get approach in favor of the generic and simpler port_vlan_dump function. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-02-25net: dsa: add port_vlan_dump routineVivien Didelot
Similar to port_fdb_dump, add a port_vlan_dump function to DSA drivers which gets passed the switchdev VLAN object and callback. This function, if implemented, takes precedence over the soon legacy vlan_getnext/port_pvid_get approach. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-02-23net: dsa: remove dsa_bridge_check_vlan_rangeVivien Didelot
DSA drivers may support multiple bridge groups with the same hardware VLAN. The mv88e6xxx driver which cannot yet, already has its own check for overlapping bridges. Thus remove the check from the DSA layer. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-02-23net: dsa: pass bridge down to driversVivien Didelot
Some DSA drivers may or may not support multiple software bridges on top of an hardware switch. It is more convenient for them to access the bridge's net_device for finer configuration. Removing the need to craft and access a bitmask also simplifies the code. This patch changes the signature of bridge related functions, update DSA drivers, and removes dsa_slave_br_port_mask. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Tested-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-02-17net: dsa: Unregister slave_dev in error pathFlorian Fainelli
With commit 0071f56e46da ("dsa: Register netdev before phy"), we are now trying to free a network device that has been previously registered, and in case of errors, this will make us hit the BUG_ON(dev->reg_state != NETREG_UNREGISTERED) condition. Fix this by adding a missing unregister_netdev() before free_netdev(). Fixes: 0071f56e46da ("dsa: Register netdev before phy") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-02-16net: dsa: remove phy_disconnect from error pathSascha Hauer
The phy has not been initialized, disconnecting it in the error path results in a NULL pointer exception. Drop the phy_disconnect from the error path. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Acked-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-07dsa: Register netdev before phyAndrew Lunn
When the phy is connected, an info message is printed. If the netdev it is attached to has not been registered yet, the name 'uninitialised' in the output. By registering the netdev first, then connecting they phy, we can avoid this. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-07phy: Add API for {un}registering an mdio device to a bus.Andrew Lunn
Rather than have drivers directly manipulate the mii_bus structure, provide and API for registering and unregistering devices on an MDIO bus, and performing lookups. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-07phy: Centralise print about attached phyAndrew Lunn
Many Ethernet drivers contain the same netdev_info() print statement about the attached phy. Move it into the phy device code. Additionally add a varargs function which can be used to append additional information. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-12-07net: dsa: move dsa slave destroy code to slave.cNeil Armstrong
Move dsa slave dedicated code from dsa_switch_destroy to a new dsa_slave_destroy function in slave.c. Add the netif_carrier_off and phy_disconnect calls in order to correctly cleanup the netdev state and PHY state machine. Signed-off-by: Frode Isaksen <fisaksen@baylibre.com> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-01net: dsa: use switchdev obj for VLAN add/del opsVivien Didelot
Simplify DSA by pushing the switchdev objects for VLAN add and delete operations down to its drivers. Currently only mv88e6xxx is affected. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-22net: dsa: remove port_fdb_getnextVivien Didelot
No driver implements port_fdb_getnext anymore, and port_fdb_dump is preferred anyway, so remove this function from DSA. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-22net: dsa: add port_fdb_dump functionVivien Didelot
Not all switch chips support a Get Next operation to iterate on its FDB. So add a more simple port_fdb_dump function for them. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-15switchdev: remove pointers from switchdev objectsJiri Pirko
When object is used in deferred work, we cannot use pointers in switchdev object structures because the memory they point at may be already used by someone else. So rather do local copy of the value. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Acked-by: Scott Feldman <sfeldma@gmail.com> Reviewed-by: John Fastabend <john.r.fastabend@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-15switchdev: make struct switchdev_attr parameter const for attr_set callsJiri Pirko
Signed-off-by: Jiri Pirko <jiri@mellanox.com> Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-13net: dsa: do not warn unsupported bridge opsVivien Didelot
A DSA driver may not provide the port_join_bridge and port_leave_bridge functions, so don't warn in such case. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-11net: dsa: use switchdev obj in port_fdb_delVivien Didelot
For consistency with the FDB add operation, propagate the switchdev_obj_port_fdb structure in the DSA drivers. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-11net: dsa: push prepare phase in port_fdb_addVivien Didelot
Now that the prepare phase is pushed down to the DSA drivers, propagate it to the port_fdb_add function. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-11net: dsa: add port_fdb_prepareVivien Didelot
Push the prepare phase for FDB operations down to the DSA drivers, with a new port_fdb_prepare function. Currently only mv88e6xxx is affected. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-07net: dsa: better error reportingRussell King
Add additional error reporting to the generic DSA code, so it's easier to debug when things go wrong. This was useful when initially bringing up 88e6176 on a new board. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-03switchdev: push object ID back to object structureJiri Pirko
Suggested-by: Scott Feldman <sfeldma@gmail.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Acked-by: Scott Feldman <sfeldma@gmail.com> Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-03switchdev: bring back switchdev_obj and use it as a generic object paramJiri Pirko
Replace "void *obj" with a generic structure. Introduce couple of helpers along that. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Acked-by: Scott Feldman <sfeldma@gmail.com> Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-03switchdev: rename switchdev_obj_fdb to switchdev_obj_port_fdbJiri Pirko
Make the struct name in sync with object id name. Suggested-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Acked-by: Scott Feldman <sfeldma@gmail.com> Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-03switchdev: rename switchdev_obj_vlan to switchdev_obj_port_vlanJiri Pirko
Make the struct name in sync with object id name. Suggested-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Acked-by: Scott Feldman <sfeldma@gmail.com> Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-03switchdev: rename SWITCHDEV_ATTR_* enum values to SWITCHDEV_ATTR_ID_*Jiri Pirko
To be aligned with obj. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Acked-by: Scott Feldman <sfeldma@gmail.com> Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-03switchdev: rename SWITCHDEV_OBJ_* enum values to SWITCHDEV_OBJ_ID_*Jiri Pirko
Suggested-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Acked-by: Scott Feldman <sfeldma@gmail.com> Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29net: dsa: fix preparation of a port STP updateVivien Didelot
Because of the default 0 value of ret in dsa_slave_port_attr_set, a driver may return -EOPNOTSUPP from the commit phase of a STP state, which triggers a WARN() from switchdev. This happened on a 6185 switch which does not support hardware bridging. Reported-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Acked-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29net: switchdev: abstract object in add/del opsVivien Didelot
Similar to the notifier_call callback of a notifier_block, change the function signature of switchdev add and del operations to: int switchdev_port_obj_add/del(struct net_device *dev, enum switchdev_obj_id id, void *obj); This allows the caller to pass a specific switchdev_obj_* structure instead of the generic switchdev_obj one. Drivers implementation of these operations and switchdev have been changed accordingly. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29net: switchdev: pass callback to dump operationVivien Didelot
Similar to the notifier_call callback of a notifier_block, change the function signature of switchdev dump operation to: int switchdev_port_obj_dump(struct net_device *dev, enum switchdev_obj_id id, void *obj, int (*cb)(void *obj)); This allows the caller to pass and expect back a specific switchdev_obj_* structure instead of the generic switchdev_obj one. Drivers implementation of dump operation can now expect this specific structure and call the callback with it. Drivers have been changed accordingly. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-29net: switchdev: remove dev from switchdev_obj cbVivien Didelot
The net_device associated to a dump operation does not have to be passed to the callback. switchdev stores it in a superset struct, if needed. Also some drivers (such as DSA drivers) may not have easy access to it. This will simplify pushing the callback function down to the drivers. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-25net: dsa: Set a "dsa" device_typeFlorian Fainelli
Provide a device_type information for slave network devices created by DSA, this is useful for user-space application to easily locate/search for devices of a specific kind. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-24dsa: use prepare/commit switchdev transaction helpersJiri Pirko
The enum is going to disappear, use the helpers instead. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-24switchdev: move transaction phase enum under transaction structureJiri Pirko
Before it disappears completely, move transaction phase enum under transaction structure and make attr/obj structures a bit cleaner. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-24switchdev: introduce transaction item queue for attr_set and obj_addJiri Pirko
Now, the memory allocation in prepare/commit state is done separatelly in each driver (rocker). Introduce the similar mechanism in generic switchdev code, in form of queue. That can be used not only for memory allocations, but also for different items. Abort item destruction is handled as well. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-24switchdev: rename "trans" to "trans_ph".Jiri Pirko
This is temporary, name "trans" will be used for something else and "trans_ph" will eventually disappear. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-18net: dsa: convert to using IFF_NO_QUEUEPhil Sutter
Signed-off-by: Phil Sutter <phil@nwl.cc> Cc: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-13net: dsa: add support for switchdev VLAN objectsVivien Didelot
Add new functions in DSA drivers to access hardware VLAN entries through SWITCHDEV_OBJ_PORT_VLAN objects: - port_pvid_get() and vlan_getnext() to dump a VLAN - port_vlan_del() to exclude a port from a VLAN - port_pvid_set() and port_vlan_add() to join a port to a VLAN The DSA infrastructure will ensure that each VLAN of the given range does not already belong to another bridge. If it does, it will fallback to software VLAN and won't program the hardware. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-13Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller
Conflicts: drivers/net/ethernet/cavium/Kconfig The cavium conflict was overlapping dependency changes. Signed-off-by: David S. Miller <davem@davemloft.net>
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