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2017-02-10net: dsa: remove unnecessary phy*.h includesRussell King1-0/+1
Including phy.h and phy_fixed.h into net/dsa.h causes phy*.h to be an unnecessary dependency for quite a large amount of the kernel. There's very little which actually requires definitions from phy.h in net/dsa.h - the include itself only wants the declaration of a couple of structures and IFNAMSIZ. Add linux/if.h for IFNAMSIZ, declarations for the structures, phy.h to mv88e6xxx.h as it needs it for phy_interface_t, and remove both phy.h and phy_fixed.h from net/dsa.h. This patch reduces from around 800 files rebuilt to around 40 - even with ccache, the time difference is noticable. Tested-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-10net: dsa: mv88e6xxx: Move forward declaration to where it is neededAndrew Lunn1-2/+2
Move it out from the middle for the #defines to just before it is needed. 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>
2017-02-08net: dsa: bcm_sf2: cleanup bcm_sf2_cfp_rule_get() a littleDan Carpenter1-4/+4
This patch doesn't affect how the code works. My static checker complains that the mask and shift doesn't make sense because 0xffffff << 16 goes beyond the end of 32 bits. It should be 0xffff instead but the existing code won't cause runtime bugs. Also the casting here is not needed and not consistent with the rest of the code. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-07net: dsa: mv88e6xxx: Refactor remaining port setupAndrew Lunn4-34/+78
Move the remaining port configuration code which varies per device into port.c, using ops were necessary. This makes mv88e6xxx_6185_family() and mv88e6xxx_6095_family() unused, so remove them. 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>
2017-02-07net: dsa: mv88e6xxx: Implement Clause 45 access to SMI devicesAndrew Lunn2-9/+120
The mv88e6390 MDIO bus controllers can support for clause 45 accesses. The internal SERDES interfaces need this, and it is likely external 10GHz PHYs will be clause 45. 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>
2017-02-07net: dsa: mv88e6xxx: Set the CMODE for mv88e6390 ports 9 & 10Andrew Lunn4-0/+84
Unlike most ports, ports 9 and 10 of the 6390X family have configurable PHY modes. Set the mode as part of adjust_link(). Ordering is important, because the SERDES interfaces connected to ports 9 and 10 can be split and assigned to other ports. The CMODE has to be correctly set before the SERDES interface on another port can be configured. Such configuration is likely to be performed in port_enable() and port_disabled(), called on slave_open() and slave_close(). The simple case is port 9 and 10 are used for 'CPU' or 'DSA'. In this case, the CMODE is set via a phy-mode in dsa_cpu_dsa_setup(), which is called early in the switch setup. When ports 9 or 10 are used as user ports, and have a fixed-phy, when the fixed fixed-phy is attached, dsa_slave_adjust_link() is called, which results in the adjust_link function being called, setting the cmode. The port_enable() will for other ports will be called much later. When ports 9 or 10 are used as user ports and have a real phy attached which does not use all the available SERDES interface, e.g. a 1Gbps SGMII, there is currently no mechanism in place to set the CMODE of the port from software. It must be hoped the stripping resistors are correct. At the same time, add a function to get the cmode. This will be needed when configuring the SERDES interfaces. 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>
2017-02-03net: dsa: mv88e6xxx: Fix typ0 when configuring 2.5GbpsAndrew Lunn1-1/+1
In order to enable 2.5Gbps mode, we need the base speed of 10G, plus the Alt bit setting. Fix a typ0 that used 1Gb base speed. 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>
2017-02-03net: dsa: mv88e6xxx: Fix ATU age timer for MV88E6390Andrew Lunn1-6/+6
The MV88E6390 family uses a different ATU age timer coefficient. Fix the info structures. 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>
2017-02-03net: dsa: mv88e6xxx: Workaround missing PHY ID on mv88e6390Andrew Lunn1-0/+8
The internal PHYs of the mv88e6390 do not have a model ID. Trap any calls to the ID register, and if it is zero, return the ID for the mv88e6390. The Marvell PHY driver can then bind to this ID. Signed-off-by: Andrew Lunn <andrew@lunn.ch> 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>
2017-01-31net: dsa: bcm_sf2: Fix build moduleFlorian Fainelli1-2/+2
Commit 7318166cacad ("net: dsa: bcm_sf2: Add support for ethtool::rxnfc") added a new object to build: bcm_sf2_cfp.o, but in doing so, we essentially just built this object and no longer bcm_sf2.o. Fix this by creating a module named bcm-sf2.ko which links in bcm_sf2.o and bcm_sf2_cfp.o. Fixes: 7318166cacad ("net: dsa: bcm_sf2: Add support for ethtool::rxnfc") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-31net: dsa: mv88e6xxx: Add support for ethernet switch 88E6141Gregory CLEMENT2-0/+44
The Marvell 88E6341 device is single-chip, 6-port Ethernet switch with four integrated 10/100/1000Mbps Ethernet transceivers and one high speed SerDes interfaces. It belongs to the Topaz family and unlike the 88E6341 it does not have a TCAM. Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-31net: dsa: mv88e6xxx: Add support for ethernet switch 88E6341Gregory CLEMENT2-4/+69
The Marvell 88E6341 device is single-chip, 6-port Ethernet switch with four integrated 10/100/1000Mbps Ethernet transceivers and one high speed SerDes interfaces. It is partially compatible with switches of family 88E6352 and switches of family 88E6390. This commit adds an initial support for this switch by describing its capabilities to the driver and introducing a new family. Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-31net: dsa: mv88e6xxx: Don't forbid MDIO I/Os for PHY addr >= num_of_portsRomain Perier1-6/+0
Some Marvell ethernet switches have internal ethernet transceivers with hardcoded phy addresses. These addresses can be greater than the number of ports or its value might be different than the associated port number. This is for example the case for MV88E6341 that has 6 ports and internal Port 1 to Port4 PHYs mapped at SMI addresses from 0x11 to 0x14. This commits fixes the issue by removing the condition in MDIO callbacks. Signed-off-by: Romain Perier <romain.perier@free-electrons.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-30net: dsa: bcm_sf2: Add support for port mirroringFlorian Fainelli1-0/+2
We can use b53_mirror_add and b53_mirror_del because the Starfighter 2 is register compatible in that specific case. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-30net: dsa: b53: Add support for port mirroringFlorian Fainelli2-0/+71
Add support for configuring port mirroring through the cls_matchall classifier. We do a full ingress or egress capture towards the capture port. Future improvements could include leveraging the divider to allow less frames to be captured, as well as matching specific MAC DA/SA. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-30net: dsa: b53: Add mirror capture register definitionsFlorian Fainelli1-0/+32
Add definitions for the different Roboswitch registers relevant for ingress and egress mirroring. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-30net: dsa: bcm_sf2: Add support for ethtool::rxnfcFlorian Fainelli4-0/+645
Add support for configuring classification rules using the ethtool::rxnfc API. This is useful to program the switch's CFP/TCAM to redirect specific packets to specific ports/queues for instance. For now, we allow any kind of IPv4 5-tuple matching. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-30net: dsa: bcm_sf2: Add CFP registers definitionsFlorian Fainelli1-0/+146
Add Compact Field Processor definitions for the Broadcom Starfighter 2 and compatible versions of the switch. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-30net: dsa: bcm_sf2: Configure traffic classes to queue mappingFlorian Fainelli2-0/+13
By default, all traffic goes to queue 0, re-configure the traffic classes to quality of service mapping such that priority X maps to queue X, where X is from 0 through 7. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-30net: dsa: b53: use dsa_port's bridge pointerVivien Didelot2-7/+3
Now that DSA exposes the bridge device pointer to which a port belongs, use it when programming the port based VLANs and thus remove the cache. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-30net: dsa: qca8k: use dsa_port's bridge pointerVivien Didelot2-9/+4
Now that DSA exposes the bridge device pointer to which a port belongs, use it when programming the port based VLANs and thus remove the cache. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-30net: dsa: mv88e6xxx: use dsa_port's bridge pointerVivien Didelot2-22/+11
Now that DSA exposes the bridge device pointer to which a port belongs, use it when programming the port based VLANs and thus remove the cache. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-30net: dsa: pass bridge device when a port leavesVivien Didelot4-4/+5
Upon reception of the NETDEV_CHANGEUPPER, a leaving port is already unbridged, so reflect this by assigning the port's bridge_dev pointer to NULL before calling the port_bridge_leave DSA driver operation. Now that the bridge_dev pointer is exposed to the drivers, reflecting the current state of the DSA switch fabric is necessary for the drivers to adjust their port based VLANs correctly. Pass the bridge device pointer to the port_bridge_leave operation so that drivers have all information to re-program their chips properly, and do not need to cache it anymore. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-30net: dsa: variable number of portsVivien Didelot3-7/+6
Change the ports[DSA_MAX_PORTS] array of the dsa_switch structure for a zero-length array, allocated at the same time as the dsa_switch structure itself. A dsa_switch_alloc() helper is provided for that. This commit brings no functional change yet since we pass DSA_MAX_PORTS as the number of ports for the moment. Future patches can update the DSA drivers separately to support dynamic number of ports. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-26net: dsa: Pass device pointer to dsa_register_switchFlorian Fainelli3-6/+5
In preparation for allowing dsa_register_switch() to be supplied with device/platform data, pass down a struct device pointer instead of a struct device_node. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-24net: dsa: mv88e6xxx: Implement the 6390 external MDIO busAndrew Lunn2-0/+9
With all the infrastructure in place, implement access to the external MDIO bus on the 6390 family. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-24net: dsa: mv88e6xxx: Support multiple MDIO bussesAndrew Lunn2-33/+87
The mv88e6390 has multiple MDIO busses. Generalize the parsing of the device tree to support multiple mdio nodes. The external mdio bus has a compatible strings to indicate it is external. Keep a linked list of busses, placing the external mdio bus at the tail of the list. When within the driver an mdio bus is needed, e.g. for EEE or SERDES, use the head of the list which should be the internal bus. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-24net: dsa: mv88e6xxx: Add mdio private structureAndrew Lunn2-4/+13
Have the MDIO bus driver code allocate a private structure and make the chip a member of it. This will allow us to add further members in the future. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-24net: dsa: mv88e6xxx: Pass mii_bus to all PHY operationsAndrew Lunn4-24/+50
In preparation for supporting multiple MDIO busses, pass the mii_bus structure to all PHY operations. It will in future then be clear on which MDIO bus the operation should be performed. For reads/write from phylib, the mii_bus is readily available. However some internal code also access the PHY, e.g. for EEE and SERDES. Make this code use the one and only currently available MDIO bus. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-24net: dsa: mv88e6xxx: Abstract mv88e6165 PHY operationsAndrew Lunn1-6/+18
The mv88e6165 family has the internal PHYs mapped directly onto the SMI register space as the switch. So the registers can be read directly. Put a wrapper around this, in preparation for changing the signature in order to support the external MDIO bus of the 6390. 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>
2017-01-24net: dsa: b53: Utilize mdio_module_driverFlorian Fainelli1-12/+1
Eliminate a bit of boilerplate code. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-23net: dsa: bcm_sf2: Allow non-IMP ports to have Broadcom tags enabledFlorian Fainelli2-0/+10
Parse the "brcm,use-bcm-hdr" boolean property during ports identification to fill a bitmask of ports that should have Broadcom tags enabled. This is needed in some configurations where per-packet metadata can be exchanged using Broadcom tags between the switch and an on-chip acceleration device. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-23net: dsa: bcm_sf2: Move code enabling Broadcom tagsFlorian Fainelli1-27/+34
In preparation for enabling Broadcom tags on different ports based on configuration information, dedicate a function that is responsible for enabling Broadcom tags for a given port and update the IMP port setup to call it. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-23net: dsa: bcm_sf2: Add support for BCM7278 integrated switchFlorian Fainelli4-9/+67
Add support for the integrated switch found on BCM7278: - core_reg_align is set to 1, to force a translation into the target address space which is 8 bytes aligned - an alternate SWITCH_REG layout is provided since registers are largely bit/masks compatible but have different offsets - conditional for all CORE_STS_OVERRIDE_{IMP,GMII_P} since those got moved way out of the traditional register space Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-23net: dsa: bcm_sf2: Prepare for different register layoutsFlorian Fainelli3-25/+109
In preparation for supporting a new device with a slightly different register layout, affecting the SWITCH_REG and SWITCH_CORE address spaces, perform a few preparatory steps: - allow matching the compatible string against a data description - convert the SWITCH_REG register accesses into an indirection table - prepare for supporting a SWITCH_CORE register alignment requirement Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-23net: dsa: bcm_sf2: Make SF2_IO64_MACRO() utilize 32-bit macroFlorian Fainelli1-2/+2
There is no point inlining the 32-bit direct register read/write part, just infer it from the existing macro. This will make it easier to centralize the address rewriting that we are going to introduce later on. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-20net: dsa: Remove hwmon supportAndrew Lunn2-170/+0
Only the Marvell mv88e6xxx DSA driver made use of the HWMON support in DSA. The temperature sensor registers are actually in the embedded PHYs, and the PHY driver now supports it. So remove all HWMON support from DSA and drivers. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-14net: dsa: mv88e6xxx: add EEPROM support to 6390Vivien Didelot4-1/+128
The Marvell 6352 chip has a 8-bit address/16-bit data EEPROM access. The Marvell 6390 chip has a 16-bit address/8-bit data EEPROM access. This patch implements the 8-bit data EEPROM access in the mv88e6xxx driver and adds its support to chips of the 6390 family. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-09net: dsa: Make dsa_switch_ops constFlorian Fainelli5-5/+5
Now that we have properly encapsulated and made drivers utilize exported functions, we can switch dsa_switch_ops to be a annotated with const. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-09net: dsa: Encapsulate legacy switch drivers into dsa_switch_driverFlorian Fainelli2-4/+12
In preparation for making struct dsa_switch_ops const, encapsulate it within a dsa_switch_driver which has a list pointer and a pointer to dsa_switch_ops. This allows us to take the list_head pointer out of dsa_switch_ops, which is written to by {un,}register_switch_driver. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-09net: dsa: bcm_sf2: Declare our own dsa_switch_opsFlorian Fainelli1-22/+33
Utilize the b53 exported functions to fill our bcm_sf2_ops structure, also making it clear what we utilize and what we specifically override. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-09net: dsa: b53: Export most operations to other driversFlorian Fainelli2-33/+79
In preparation for making dsa_switch_ops const, export b53 operations utilized by other drivers such as bcm_sf2. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-09Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller1-2/+9
2017-01-09net: dsa: bcm_sf2: Utilize nested MDIO read/writeFlorian Fainelli1-2/+2
We are implementing a MDIO bus which is behind another one, so use the nested version of the accessors to get lockdep annotations correct. Fixes: 461cd1b03e32 ("net: dsa: bcm_sf2: Register our slave MDIO bus") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-09net: dsa: bcm_sf2: Do not clobber b53_switch_opsFlorian Fainelli1-0/+7
We make the bcm_sf2 driver override ds->ops which points to b53_switch_ops since b53_switch_alloc() did the assignent. This is all well and good until a second b53 switch comes in, and ends up using the bcm_sf2 operations. Make a proper local copy, substitute the ds->ops pointer and then override the operations. Fixes: f458995b9ad8 ("net: dsa: bcm_sf2: Utilize core B53 driver when possible") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-06net: dsa: b53: Utilize common helpers for u64/MACFlorian Fainelli2-22/+4
Utilize the two functions recently introduced: u64_to_ether() and ether_to_u64() instead of our own versions. Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-05net:mv88e6xxx: use g2 interrupt for 6097 chipVolodymyr Bendiuga1-0/+1
This chip needs MV88E6XXX_FLAG_G2_INT Signed-off-by: Volodymyr Bendiuga <volodymyr.bendiuga@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-05dsa: mv88e6xxx: Optimise atu_getAndrew Lunn1-2/+3
Lookup in the ATU can be performed starting from a given MAC address. This is faster than starting with the first possible MAC address and iterating all entries. Entries are returned in numeric order. So if the MAC address returned is bigger than what we are searching for, we know it is not in the ATU. Using the benchmark provided by Volodymyr Bendiuga <volodymyr.bendiuga@gmail.com>, https://www.spinics.net/lists/netdev/msg411550.html on an Marvell Armada 370 RD, the test to add a number of static fdb entries went from 1.616531 seconds to 0.312052 seconds. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-03dsa:mv88e6xxx: allow address 0x1 in smi_initVolodymyr Bendiuga1-4/+0
Some devices, such as the mv88e6097 do have ADDR[0] external and so it is possible to configure the device to use SMI address 0x1. Remove the restriction, as there are boards using this address. Signed-off-by: Volodymyr Bendiuga <volodymyr.bendiuga@westermo.se> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-16net: dsa: mv88e6xxx: Fix opps when adding vlan bridgeAndrew Lunn1-0/+6
A port is not necessarily assigned to a netdev. And a port does not need to be a member of a bridge. So when iterating over all ports, check before using the netdev and bridge_dev for a port. Otherwise we dereference a NULL pointer. Fixes: da9c359e19f0 ("net: dsa: mv88e6xxx: check hardware VLAN in use") 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>