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Author SHA1 Message Date
David S. Miller 34aa83c2fc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Overlapping changes in drivers/net/phy/marvell.c, bug fix in 'net'
restricting a HW workaround alongside cleanups in 'net-next'.

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 20:46:35 -04:00
Linus Torvalds e2a9aa5ab2 LED fixes for 4.12-rc3
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Merge tag 'led_fixes_for_4-12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds

Pull LED fix from Jacek Anaszewski:
 "A single LED fix for 4.12-rc3.

  leds-pca955x driver uses only i2c_smbus API and thus it should pass
  I2C_FUNC_SMBUS_BYTE_DATA flag to i2c_check_functionality"

* tag 'led_fixes_for_4-12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds:
  leds: pca955x: Correct I2C Functionality
2017-05-26 14:02:30 -07:00
Linus Torvalds 6741d51699 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) Fix state pruning in bpf verifier wrt. alignment, from Daniel
    Borkmann.

 2) Handle non-linear SKBs properly in SCTP ICMP parsing, from Davide
    Caratti.

 3) Fix bit field definitions for rss_hash_type of descriptors in mlx5
    driver, from Jesper Brouer.

 4) Defer slave->link updates until bonding is ready to do a full commit
    to the new settings, from Nithin Sujir.

 5) Properly reference count ipv4 FIB metrics to avoid use after free
    situations, from Eric Dumazet and several others including Cong Wang
    and Julian Anastasov.

 6) Fix races in llc_ui_bind(), from Lin Zhang.

 7) Fix regression of ESP UDP encapsulation for TCP packets, from
    Steffen Klassert.

 8) Fix mdio-octeon driver Kconfig deps, from Randy Dunlap.

 9) Fix regression in setting DSCP on ipv6/GRE encapsulation, from Peter
    Dawson.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (43 commits)
  ipv4: add reference counting to metrics
  net: ethernet: ax88796: don't call free_irq without request_irq first
  ip6_tunnel, ip6_gre: fix setting of DSCP on encapsulated packets
  sctp: fix ICMP processing if skb is non-linear
  net: llc: add lock_sock in llc_ui_bind to avoid a race condition
  bonding: Don't update slave->link until ready to commit
  test_bpf: Add a couple of tests for BPF_JSGE.
  bpf: add various verifier test cases
  bpf: fix wrong exposure of map_flags into fdinfo for lpm
  bpf: add bpf_clone_redirect to bpf_helper_changes_pkt_data
  bpf: properly reset caller saved regs after helper call and ld_abs/ind
  bpf: fix incorrect pruning decision when alignment must be tracked
  arp: fixed -Wuninitialized compiler warning
  tcp: avoid fastopen API to be used on AF_UNSPEC
  net: move somaxconn init from sysctl code
  net: fix potential null pointer dereference
  geneve: fix fill_info when using collect_metadata
  virtio-net: enable TSO/checksum offloads for Q-in-Q vlans
  be2net: Fix offload features for Q-in-Q packets
  vlan: Fix tcp checksum offloads in Q-in-Q vlans
  ...
2017-05-26 13:51:01 -07:00
David S. Miller 47936d35ed Merge branch 'ibmvnic-Driver-updates'
Nathan Fontenot says:

====================
ibmvnic: Driver updates

This set of patches implements several updates to the ibmvnic driver
to fix issues that have been found in testing. Most of the updates
invovle updating queue handling during driver close and reset
operations.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 15:32:47 -04:00
Nathan Fontenot 57a49436f4 ibmvnic: Reset sub-crqs during driver reset
When the ibmvnic driver is resetting, we can just reset the sub crqs
instead of releasing all of their resources and re-allocting them.

Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 15:32:47 -04:00
Nathan Fontenot 8c0543adca ibmvnic: Reset tx/rx pools on driver reset
When resetting the ibmvnic driver there is not a need to release
and re-allocate the resources for the tx and rx pools. These
resources can just be reset to avoid the re-allocations.

Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 15:32:46 -04:00
Nathan Fontenot 28cde75102 ibmvnic: Reset the CRQ queue during driver reset
When a driver reset operation occurs there is not a need to release
the CRQ resources and re-allocate them. Instead a reset of the CRQ
will suffice.

Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 15:32:46 -04:00
Nathan Fontenot 152ce47dc4 ibmvnic: Check adapter state during ibmvnic_poll
We do not want to process any receive frames if the ibmvnic_poll
routine is invoked while a reset is in process. Also, before
replenishing the rx pools in the ibmvnic_poll, we want to
make sure the adapter is not in the process of closing.

Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 15:32:46 -04:00
Thomas Falcon f185a49a77 ibmvnic: Deactivate RX pool buffer replenishment on H_CLOSED
If H_CLOSED is returned, halt RX buffer replenishment activity
until firmware sends a notification that the driver can reset.

Signed-off-by: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 15:32:46 -04:00
Thomas Falcon b8c80b8413 ibmvnic: Halt TX and report carrier off on H_CLOSED return code
This patch disables transmissions and reports carrier off if xmit
function returns that the hardware TX queue is closed. The driver can
then await a signal from firmware to determine the correct reset method.

Signed-off-by: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 15:32:45 -04:00
John Allen 8cb31cfc94 ibmvnic: Non-fatal error handling
Handle non-fatal error conditions. The process to do this when
resetting the driver is to just do __ibmvnic_close followed by
__ibmvnic_open.

Signed-off-by: John Allen <jallen@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 15:32:45 -04:00
Thomas Falcon 10f7621588 ibmvnic: Fix cleanup of SKB's on driver close
A race condition occurs when closing the driver. Free'ing of skb's
can race between the close routine and ibmvnic_tx_interrupt. To fix
this we move the claenup of tx pools during close to after the
sub-CRQ interrupts are disabled.

Signed-off-by: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 15:32:45 -04:00
John Allen 2ce9e4efbf ibmvnic: Send gratuitous arp on reset
Send gratuitous arp after any reset.

Signed-off-by: John Allen <jallen@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 15:32:44 -04:00
John Allen 017892c1ec ibmvnic: Handle failover after failed init crq
Handle case where phyp sends a failover after failing to send the
init crq.

Signed-off-by: John Allen <jallen@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 15:32:44 -04:00
John Allen d944c3d60a ibmvnic: Track state of adapter napis
Track the state of ibmvnic napis. The driver can get into states where it
can be reset when napis are already disabled and attempting to disable them
again will cause the driver to hang.

Signed-off-by: John Allen <jallen@linux.vnet.ibm.com>
Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 15:32:44 -04:00
David S. Miller 0ca3737526 Merge branch 'mlxsw-Improve-extensibility'
Jiri Pirko says:

====================
mlxsw: Improve extensibility

Ido says:

Since the initial introduction of the bridge offload in commit
56ade8fe3f ("mlxsw: spectrum: Add initial support for Spectrum ASIC")
the per-port struct was used to store both physical properties of the
port as well as logical bridge properties such as learning and active
VLANs in the VLAN-aware bridge.

The above resulted in a bloated struct and code that is getting
increasingly difficult to extend when stacked devices are taken into
account as well as more advanced use cases such as IGMP snooping.

Due to the incremental development nature of this driver as well as the
complexity of the underlying hardware, subsequent design decisions failed
to generalize the FID and RIF resources, which could've benefited from
a more generic design, resulting in consolidated code paths and better
extensibility with regards to future ASICs and use cases.

This patchset tries to solve both of these design problems, as they're
tightly coupled. To ease the code review, the changes are done in a
bottom-up manner, in which the port struct is the first to be patched,
then the FIDs the ports are mapped to and finally the RIFs configured on
top.

The first half of the patchset gradually moves away from the previous
design to a design that is more in sync with the underlying hardware and
which clearly separates between hardware-specific structs and logical
ones such as a bridge port.

All the bridge-specific information is removed from the port struct, as
well as the list of VLAN devices ("vPorts") configured on top of it.
Instead, a linked list of VLANs is introduced, which allows each VLAN
to hold a state, such as mapping to a particular FID and membership in
a bridge. The data structures are depicted in the following figure:

                                  mlxsw_sp_bridge_device
                                       +----------+
                                       |          |
                                  +----+          |
                                  |    |          |
                                  |    +----------+
                                  |
             mlxsw_sp_bridge_port |
                 +----------+     |
                 |          |     |
              +-->          +-----+--> ..
              |  |          |
              |  +----+-----+
              |       |
              |       v
              | mlxsw_sp_bridge_vlan
              |  +----------+
              |  | vid X    |
              |  |          +--> ..
              |  |          |
              |  +----+-----+
              |       |
              +--+----v-----+
                 | vid X    |
              +--+          +--> ..
              |  |          |
mlxsw_sp_port |  +----------+
+----------+  | mlxsw_sp_port_vlan
|          |  |
|          +--+
|          |
+----------+

This model allows us to consolidate many of the code paths relating to
VLAN-aware and VLAN-unaware bridges, as the latter is simply represented
using a bridge port with a VLAN list size of one. Another advantage of
the model is that it's easy to extend it with future per-VLAN
attributes - such as mrouter indication - by merely pushing these down
from the bridge port struct to the bridge VLAN one.

The second half of the patchset builds on top of previous work and
prepares the driver for the common FID and RIF cores, which are finally
implemented in the last two patches. These exploit the fact that despite
the different kinds of FIDs and RIFs, they do share a common object on
which the core operations can operate on.

By hiding both objects from the rest of the driver and modeling their
operations using a VFT, it'll be easier to extend the driver for future
use cases such as VXLAN.

Tested using following LNST recipes:
https://github.com/jpirko/lnst/tree/master/recipes/switchdev
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 15:18:50 -04:00
Ido Schimmel e4f3c1c17b mlxsw: spectrum_router: Implement common RIF core
The mlxsw driver currently implements three types of RIFs. VLAN and FID
RIFs for L3 interfaces on top of VLAN-aware and VLAN-unaware bridges
(respectively) and Subport RIFs for all other L3 interfaces.

All the RIF types follow a common configuration procedure, which only
differs in the type-specific bits. The patch exploits this fact and
consolidates the common code paths, thereby simplifying the code and
making it more extensible.

This work also prepares the driver for use with future ASICs, where the
range of the Subport RIFs will be extended and their configuration
modified accordingly. By merely implementing a new RIF operations and
selecting it during initialization, the same driver could be re-used.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 15:18:49 -04:00
Ido Schimmel a110748725 mlxsw: spectrum: Implement common FID core
The device supports three types of FIDs. 802.1Q and 802.1D FIDs for
VLAN-aware and VLAN-unaware bridges (respectively) and rFIDs to
transport packets to the router block.

The different users (e.g., bridge, router, ACLs) of the FIDs
infrastructure need not know about the internal FIDs implementation and
can therefore interact with it using a restricted set of exported
functions.

By encapsulating the entire FID logic and hiding it from the rest of the
driver we get a code base that it much simpler and easier to work with
and extend.

For example, in the current Spectrum ASIC only 802.1D FIDs can be
assigned a VNI, but future ASICs will also support 802.1Q FIDs. With
this patch in place, support for future ASICs can be easily added by
implementing a new FID operations according to their capabilities.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 15:18:49 -04:00
Ido Schimmel c9ec53f034 mlxsw: spectrum_router: Determine VR first when creating RIF
All RIF types are associated with a virtual router (VR), so determine VR
first when creating a RIF.

That way, we can more easily integrate the common RIF core in the
following patches.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 15:18:49 -04:00
Ido Schimmel 8e3482d6ad mlxsw: spectrum_router: Flood packets to router after RIF creation
If a packet ingress the router but can't be assigned an ingress RIF,
it's dropped.

Therefore, in the case of RIF configured on top of a bridge, it makes
sense to start flooding broadcast packets to the router only after the
RIF was created.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 15:18:48 -04:00
Ido Schimmel 1b8f09a05f mlxsw: spectrum_router: Destroy RIF only based on its struct
Now that all the information to create a RIF is contained within the RIF
struct itself, we can also simplify the destruction logic.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 15:18:48 -04:00
Ido Schimmel ab01ae9169 mlxsw: spectrum_router: Configure RIFs based on RIF struct
All the information necessary for the configuration of RIFs can now be
found in the RIF struct itself, so reduce the arguments list.

This gets us one step closer to the common RIF core.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 15:18:48 -04:00
Ido Schimmel 4d93ceebf0 mlxsw: spectrum_router: Extend the RIF struct
Currently, when a Subport RIF is configured, the LAG status and VLAN of
the underlying port are read from the port itself. This is problematic,
as we would like to have common code to configure all types of RIFs,
which aren't necessarily bound to a port.

Instead, embed the RIF in a struct specific to the Subport type, which
contains all the necessary information.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 15:18:48 -04:00
Ido Schimmel a13a594da0 mlxsw: spectrum_router: Allocate RIF prior to its configuration
In the following patches the RIF's configuration function is going to
expect a RIF struct with all the necessary information.

Therefore, allocate the RIF just before it's configured to the device.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 15:18:47 -04:00
Ido Schimmel caa3ddf8e3 mlxsw: spectrum_router: Allocate FID prior to RIF configuration
The following patches are going to re-arrange the FID and RIF code, so
that when the RIF is configured to the device based on the information
present in the RIF struct (which points to a FID).

For this reason, move the FID allocation to just before the RIF
configuration.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 15:18:47 -04:00
Ido Schimmel c57529e1d5 mlxsw: spectrum: Replace vPorts with Port-VLAN
As explained in the cover letter, since the introduction of the bridge
offload in the mlxsw driver, information related to the offloaded bridge
and bridge ports was stored in the individual port struct,
mlxsw_sp_port.

This lead to a bloated struct storing both physical properties of the
port (e.g., autoneg status) as well as logical properties of an upper
bridge port (e.g., learning, mrouter indication). While this might work
well for simple devices, it proved to be hard to extend when stacked
devices were taken into account and more advanced use-cases (e.g., IGMP
snooping) considered.

This patch removes the excess information from the above struct and
instead stores it in more appropriate structs that represent the bridge
port, the bridge itself and a VLAN configured on the bridge port.

The membership of a port in a bridge is denoted using the Port-VLAN
struct, which points to the bridge port and also member in the bridge
VLAN group of the VLAN it represents. This allows us to completely
remove the vPort abstraction and consolidate many of the code paths
relating to VLAN-aware and unaware bridges.

Note that the FID / vFID code is currently duplicated, but this will
soon go away when the common FID core will be introduced.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 15:18:47 -04:00
Ido Schimmel ed9ddd3aad mlxsw: spectrum: Don't create FIDs upon creation of VLAN uppers
Up until now we used to create FIDs upon the creation of VLAN uppers on
top of the VLAN-aware bridge. This was done so that in case a router
interface (RIF) was configured on top of the bridge, the FID would
already be there.

Instead, simplify the code and only create the FID upon RIF creation.

This is an intermediary step towards the introduction of the common FID
core, in which this code would be completely removed.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 15:18:46 -04:00
Ido Schimmel f0cebd81c9 mlxsw: spectrum: Don't lose bridge port device during enslavement
Currently, when port netdevs (or their uppers) are enslaved to a bridge,
we simply propagate the CHANGEUPPER event all the way down and lose the
context of the actual netdevice used as the bridge port.

This leads to a lot of information hanging off the ports (and vPorts),
which doesn't logically belong there, such as mrouter indication and
unknown unicast flood state.

Following patches are going to put the mlxsw_sp_port struct on diet and
instead introduce a bridge port struct, where the above mentioned
information belongs. But in order to do that, we need to be able to
determine the bridge port netdevice, so propagate it down.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 15:18:46 -04:00
Ido Schimmel 7cbecf245a mlxsw: spectrum_router: Replace vPorts with Port-VLAN
We're going to get rid of vPorts completely later in the patchset, but
the router code is self-contained, so it's a good candidate to start the
transition with.

Convert all the functions that expects to operate on a vPort to operate
on a Port-VLAN instead.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 15:18:45 -04:00
Ido Schimmel ce95e15456 mlxsw: spectrum: Change signature of FID leave function
When a vPort is destroyed, it leaves the FID it's currently mapped to
(if any) and drops the reference. The FID's leave function expects to
get the vPort as its argument, but this will have to change when the
vPort model is retired.

Change the function signature to expect a Port-VLAN struct instead and
patch the call sites accordingly.

The code introduced in this patch will be removed later in the patchset,
but this intermediary step is required in order to ease the code review.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 15:18:45 -04:00
Ido Schimmel 31a08a523a mlxsw: spectrum: Introduce Port-VLAN structure
This is the first step in the transition from the vPort model to a
unified Port-VLAN structure. The new structure is defined and created /
destroyed upon invocation of the 8021q ndos, but it's not actually used
throughout the code.

Subsequent patches will initialize it correctly and also create /
destroy it upon switchdev's VLAN object.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 15:18:45 -04:00
Ido Schimmel 4aafc368da mlxsw: spectrum: Set port's mode according to FID mappings
We currently transition the port to "Virtual mode" upon the creation of
its first VLAN upper, as we need to classify incoming packets to a FID
using {Port, VID} and not only the VID.

However, it's more appropriate to transition the port to this mode when
the {Port, VID} are actually mapped to a FID. Either during the
enslavement of the VLAN upper to a VLAN-unaware bridge or the
configuration of a router port.

Do this change now in preparation for the introduction of the FID core,
where this operation will be encapsulated.

To prevent regressions, this patch also explicitly configures an OVS
slave to "Virtual mode". Otherwise, a packet that didn't hit an ACL rule
could be classified to an existing FID based on a global VID-to-FID
mapping, thus not incurring a FID mis-classification, which would
otherwise trap the packet to the CPU to be processed by the OVS daemon.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 15:18:45 -04:00
Ido Schimmel 9341b988e6 bridge: Export multicast enabled state
During enslavement to a bridge, after the CHANGEUPPER is sent, the
multicast enabled state of the bridge isn't propagated down to the
offloading driver unless it's changed.

This patch allows such drivers to query the multicast enabled state from
the bridge, so that they'll be able to correctly configure their flood
tables during port enslavement.

In case multicast is disabled, unregistered multicast packets can be
treated as broadcast and be flooded through all the bridge ports.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 15:18:44 -04:00
Ido Schimmel 1f51445af3 bridge: Export VLAN filtering state
It's useful for drivers supporting bridge offload to be able to query
the bridge's VLAN filtering state.

Currently, upon enslavement to a bridge master, the offloading driver
will only learn about the bridge's VLAN filtering state after the bridge
device was already linked with its slave.

Being able to query the bridge's VLAN filtering state allows such
drivers to forbid enslavement in case resource couldn't be allocated for
a VLAN-aware bridge and also choose the correct initialization routine
for the enslaved port, which is dependent on the bridge type.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 15:18:44 -04:00
Linus Torvalds cdbe020678 Changed since last update:
- Fix indlen block reservation accounting bug when splitting delalloc extent
 - Fix warnings about unused variables that appeared in -rc1.
 - Don't spew errors when bmapping a local format directory
 - Fix an off-by-one error in a delalloc eof assertion
 - Make fsmap only return inode information for CAP_SYS_ADMIN
 - Fix a potential mount time deadlock recovering cow extents
 - Fix unaligned memory access in _btree_visit_blocks
 - Fix various SEEK_HOLE/SEEK_DATA bugs
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Merge tag 'xfs-4.12-fixes-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux

Pull XFS fixes from Darrick Wong:
 "A few miscellaneous bug fixes & cleanups:

   - Fix indlen block reservation accounting bug when splitting delalloc
     extent

   - Fix warnings about unused variables that appeared in -rc1.

   - Don't spew errors when bmapping a local format directory

   - Fix an off-by-one error in a delalloc eof assertion

   - Make fsmap only return inode information for CAP_SYS_ADMIN

   - Fix a potential mount time deadlock recovering cow extents

   - Fix unaligned memory access in _btree_visit_blocks

   - Fix various SEEK_HOLE/SEEK_DATA bugs"

* tag 'xfs-4.12-fixes-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  xfs: Move handling of missing page into one place in xfs_find_get_desired_pgoff()
  xfs: Fix off-by-in in loop termination in xfs_find_get_desired_pgoff()
  xfs: Fix missed holes in SEEK_HOLE implementation
  xfs: fix off-by-one on max nr_pages in xfs_find_get_desired_pgoff()
  xfs: fix unaligned access in xfs_btree_visit_blocks
  xfs: avoid mount-time deadlock in CoW extent recovery
  xfs: only return detailed fsmap info if the caller has CAP_SYS_ADMIN
  xfs: bad assertion for delalloc an extent that start at i_size
  xfs: fix warnings about unused stack variables
  xfs: BMAPX shouldn't barf on inline-format directories
  xfs: fix indlen accounting error on partial delalloc conversion
2017-05-26 12:13:08 -07:00
David S. Miller 5f9e27e60e Merge branch 'mv88e6xxx-SERDES'
Andrew Lunn says:

====================
net: dsa: mv88e6xxx: Add basic SERDES support

Some of the Marvell switches are SERDES interface, which must be
powered up before packets can be passed. This is particularly true on
the 6390, where the SERDES defaults to down, probably to save power.

This series refactors the existing SERDES support for the 6352, and
adds 6390 support.

v2:

Split phy functions out into phy.[ch]
Don't add MV88E6XXX_FLAG_G1_ATU_FID back again
Move the serdes op up in mv88e6xxx_ops
Move some #defines into serdes.h
Add a mv88e6xxx_serdes_power()
Don't keep moving calls to this helper around in the code

v3:

Move more phy functions into phy.[ch]
Make mv88e6xxx_phy_page_get() and mv88e6xxx_phy_page_put static
Use the mv88e6xxx_serdes_power() helper everywhere
dev_err(...) when mv88e6xxx_serdes_power() fails
Add reviewed-by's
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 15:00:46 -04:00
Andrew Lunn 04aca99382 dsa: mv88e6xxx: Enable/Disable SERDES on port enable/disable
Implement the port enable/disable callbacks, which enable/disable the
SERDES interfaces, if applicable. This should save a bit of
power/heat.

We also need to enable SERDES on CPU and DSA ports, so keep the
existing call to the op, but make it conditional.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 15:00:45 -04:00
Andrew Lunn 6335e9f244 net: dsa: mv88e6xxx: mv88e6390X SERDES support
The mv88e6390X family has 8 SERDES lanes. These can be used for 2
10Gbps ports, ports 9 or 10. If these ports are used at slower speeds,
the SERDES lanes become available for other ports for 1000Base-X.

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>
2017-05-26 15:00:45 -04:00
Andrew Lunn ba9b989dc7 net: dsa: mv88e6xxx: Remove SERDES flag
Now that we use an op for SERDES operations, we don't need a flag for
it. Remove it.

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>
2017-05-26 15:00:45 -04:00
Andrew Lunn 6d91782f0f net: dsa: mv88e6xxx: Refactor mv88e6352 SERDES code into an op
The mv88e6390 family has a different SERDES implementation. Refactor
the mv88e6352 code into an ops function, so we can later add the
mv88e6390 code.

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>
2017-05-26 15:00:44 -04:00
Andrew Lunn 10fa5bfcd6 net: dsa: mv88e6xxx: Move phy functions into phy.[ch]
The upcoming SERDES support will need to make use of PHY functions. Move
them out into a file of there own. No code changes.

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>
2017-05-26 15:00:44 -04:00
Eric Dumazet 3fb07daff8 ipv4: add reference counting to metrics
Andrey Konovalov reported crashes in ipv4_mtu()

I could reproduce the issue with KASAN kernels, between
10.246.7.151 and 10.246.7.152 :

1) 20 concurrent netperf -t TCP_RR -H 10.246.7.152 -l 1000 &

2) At the same time run following loop :
while :
do
 ip ro add 10.246.7.152 dev eth0 src 10.246.7.151 mtu 1500
 ip ro del 10.246.7.152 dev eth0 src 10.246.7.151 mtu 1500
done

Cong Wang attempted to add back rt->fi in commit
82486aa6f1 ("ipv4: restore rt->fi for reference counting")
but this proved to add some issues that were complex to solve.

Instead, I suggested to add a refcount to the metrics themselves,
being a standalone object (in particular, no reference to other objects)

I tried to make this patch as small as possible to ease its backport,
instead of being super clean. Note that we believe that only ipv4 dst
need to take care of the metric refcount. But if this is wrong,
this patch adds the basic infrastructure to extend this to other
families.

Many thanks to Julian Anastasov for reviewing this patch, and Cong Wang
for his efforts on this problem.

Fixes: 2860583fe8 ("ipv4: Kill rt->fi")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Andrey Konovalov <andreyknvl@google.com>
Reviewed-by: Julian Anastasov <ja@ssi.bg>
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 14:57:07 -04:00
Uwe Kleine-König 03d1da3c05 net: ethernet: ax88796: support generating a random mac address
Instead of falling back to 00:00:00:00:00:00 generate a random address
if none is provided via platform data or from the device's register
space.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 14:56:19 -04:00
Uwe Kleine-König 82533ad9a1 net: ethernet: ax88796: don't call free_irq without request_irq first
The function ax_init_dev (which is called only from the driver's .probe
function) calls free_irq in the error path without having requested the
irq in the first place. So drop the free_irq call in the error path.

Fixes: 825a2ff189 ("AX88796 network driver")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 14:55:38 -04:00
Peter Dawson 0e9a709560 ip6_tunnel, ip6_gre: fix setting of DSCP on encapsulated packets
This fix addresses two problems in the way the DSCP field is formulated
 on the encapsulating header of IPv6 tunnels.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=195661

1) The IPv6 tunneling code was manipulating the DSCP field of the
 encapsulating packet using the 32b flowlabel. Since the flowlabel is
 only the lower 20b it was incorrect to assume that the upper 12b
 containing the DSCP and ECN fields would remain intact when formulating
 the encapsulating header. This fix handles the 'inherit' and
 'fixed-value' DSCP cases explicitly using the extant dsfield u8 variable.

2) The use of INET_ECN_encapsulate(0, dsfield) in ip6_tnl_xmit was
 incorrect and resulted in the DSCP value always being set to 0.

Commit 90427ef5d2 ("ipv6: fix flow labels when the traffic class
 is non-0") caused the regression by masking out the flowlabel
 which exposed the incorrect handling of the DSCP portion of the
 flowlabel in ip6_tunnel and ip6_gre.

Fixes: 90427ef5d2 ("ipv6: fix flow labels when the traffic class is non-0")
Signed-off-by: Peter Dawson <peter.a.dawson@boeing.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 14:54:39 -04:00
David S. Miller db48cc2d31 Merge branch 'marvell-phy-cleanups'
Andrew Lunn says:

====================
More marvell phy cleanups

This patchset continues the cleanup of the Marvell PHY driver.  These
phys use pages to allow more than the 32 registers that fit into the
MDIO address space. Cleanup the code used for changing pages.

v2
Reverse christmas tree
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 14:44:51 -04:00
Andrew Lunn 52295666ed net: phy: marvell: Uniform page names
Bring all the page names together, remove the repeats, and make them
uniform.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 14:44:50 -04:00
Andrew Lunn 53798328ce net: phy: marvell: helper to get and set page
There is a common pattern of first reading the currently selected page
and then changing to another page. Add a helper to do this.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 14:44:50 -04:00
Andrew Lunn 975b388c91 net: phy: marvell: More hidden page changes refactored
EXT_ADDR_PAGE is the same meaning as MII_MARVELL_PHY_PAGE, i.e. change
page. Replace it will calls to the helpers.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 14:44:50 -04:00
Andrew Lunn 3ea17bc7bc net: phy: marvell: #defines for copper and fibre pages
Replace magic numbers for PHY pages with symbolic names.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-26 14:44:49 -04:00