Use a safe strscpy call to copy the ethtool stat strings into the
relevant buffers, instead of a memcpy that will be accessing
out-of-bound data.

Fixes: 118d6298 ("net: mvpp2: add ethtool GOP statistics")
Signed-off-by: NMaxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

WoL magic packet configuration sometimes does not work due to
couple of leakages found.

Mainly there was a regression introduced during readx_poll refactoring.

Next, fw request waiting time was too small. Sometimes that
caused sleep proxy config function to return with an error
and to skip WoL configuration.
At last, WoL data were passed to FW from not clean buffer.
That could cause FW to accept garbage as a random configuration data.

Fixes: 6a7f2277 ("net: aquantia: replace AQ_HW_WAIT_FOR with readx_poll_timeout_atomic")
Signed-off-by: NNikita Danilov <nikita.danilov@aquantia.com>
Signed-off-by: NIgor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

There's some NICs, such as hinic, with NETIF_F_IP_CSUM and NETIF_F_TSO
on but NETIF_F_HW_CSUM off. And ipvlan device features will be
NETIF_F_TSO on with NETIF_F_IP_CSUM and NETIF_F_IP_CSUM both off as
IPVLAN_FEATURES only care about NETIF_F_HW_CSUM. So TSO will be
disabled in netdev_fix_features.
For example:
Features for enp129s0f0:
rx-checksumming: on
tx-checksumming: on
        tx-checksum-ipv4: on
        tx-checksum-ip-generic: off [fixed]
        tx-checksum-ipv6: on

Fixes: a188222b ("net: Rename NETIF_F_ALL_CSUM to NETIF_F_CSUM_MASK")
Signed-off-by: NMiaohe Lin <linmiaohe@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The hardware values for link speed are held in the sja1105_speed_t enum.
However they do not increase in the order that sja1105_get_speed_cfg was
iterating over them (basically from SJA1105_SPEED_AUTO - 0 - to
SJA1105_SPEED_1000MBPS - 1 - skipping the other two).

Another bug is that the code in sja1105_adjust_port_config relies on the
fact that an invalid link speed is detected by sja1105_get_speed_cfg and
returned as -EINVAL.  However storing this into an enum that only has
positive members will cast it into an unsigned value, and it will miss
the negative check.

So take the simplest approach and remove the sja1105_get_speed_cfg
function and replace it with a simple switch-case statement.

Fixes: 8aa9ebcc ("net: dsa: Introduce driver for NXP SJA1105 5-port L2 switch")
Signed-off-by: NVladimir Oltean <olteanv@gmail.com>
Suggested-by: NAndrew Lunn <andrew@lunn.ch>
Reviewed-by: NAndrew Lunn <andrew@lunn.ch>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Avoid reducing the support mask as a result of the interface type
selected for SFP modules, or when setting the link settings through
ethtool - this should only change when the supported link modes of
the hardware combination change.
Signed-off-by: NRussell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Some SFP modules do not like reads longer than 16 bytes, so read the
EEPROM in chunks of 16 bytes at a time.  This behaviour is not specified
in the SFP MSAs, which specifies:

 "The serial interface uses the 2-wire serial CMOS E2PROM protocol
  defined for the ATMEL AT24C01A/02/04 family of components."

and

 "As long as the SFP+ receives an acknowledge, it shall serially clock
  out sequential data words. The sequence is terminated when the host
  responds with a NACK and a STOP instead of an acknowledge."

We must avoid breaking a read across a 16-bit quantity in the diagnostic
page, thankfully all 16-bit quantities in that page are naturally
aligned.
Signed-off-by: NRussell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: NAndrew Lunn <andrew@lunn.ch>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Should only enable HW RX_2BYTE_OFFSET function in the case NET_IP_ALIGN
equals to 2.
Signed-off-by: NMark Lee <mark-mc.lee@mediatek.com>
Signed-off-by: NSean Wang <sean.wang@mediatek.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Should hw_feature as hardware capability flags to check if hardware LRO
got support.
Signed-off-by: NMark Lee <mark-mc.lee@mediatek.com>
Signed-off-by: NSean Wang <sean.wang@mediatek.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Fix ability to set RX descriptor number, the reason - initially
"tx_max_pending" was set incorrectly, but the issue appears after
adding sanity check, so fix is for "sanity" patch.

Fixes: 37e2d99b ("ethtool: Ensure new ring parameters are within bounds during SRINGPARAM")
Signed-off-by: NIvan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Reviewed-by: NGrygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

When doing a loopback test at copper ports, the serdes loopback
and the phy loopback will fail, because of the adjust link had
not finished, and phy not ready.

Adds sleep between adjust link and test process to fix it.
Signed-off-by: NYonglong Liu <liuyonglong@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

When non-bridged, non-vlan'ed mv88e6xxx port is moving down, error
message is logged:

failed to kill vid 0081/0 for device eth_cu_1000_4

This is caused by call from __vlan_vid_del() with vin set to zero, over
call chain this results into _mv88e6xxx_port_vlan_del() called with
vid=0, and mv88e6xxx_vtu_get() called from there returns -EINVAL.

On symmetric path moving port up, call goes through
mv88e6xxx_port_vlan_prepare() that calls mv88e6xxx_port_check_hw_vlan()
that returns -EOPNOTSUPP for zero vid.

This patch changes mv88e6xxx_vtu_get() to also return -EOPNOTSUPP for
zero vid, then this error code is explicitly cleared in
dsa_slave_vlan_rx_kill_vid() and error message is no longer logged.
Signed-off-by: NNikita Yushchenko <nikita.yoush@cogentembedded.com>
Reviewed-by: NVivien Didelot <vivien.didelot@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

MVPP2_TXQ_SCHED_TOKEN_CNTR_REG() expects the logical queue id but
the current code is passing the global tx queue offset, so it ends
up writing to unknown registers (between 0x8280 and 0x82fc, which
seemed to be unused by the hardware). This fixes the issue by using
the logical queue id instead.

Fixes: 3f518509 ("ethernet: Add new driver for Marvell Armada 375 network unit")
Signed-off-by: NAntoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Force of 56G is not supported by hardware in Ethernet devices. This
configuration fails with a bad parameter error from firmware.

Add check of this case. Instead of trying to set 56G with autoneg off,
return a meaningful error.

Fixes: 56ade8fe ("mlxsw: spectrum: Add initial support for Spectrum ASIC")
Signed-off-by: NAmit Cohen <amitc@mellanox.com>
Acked-by: NJiri Pirko <jiri@mellanox.com>
Signed-off-by: NIdo Schimmel <idosch@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

When identical rules are inserted, the latter one goes to C-TCAM. For
that, a second eRP with the same mask is created. These 2 eRPs by the
nature cannot be merged and also one cannot be parent of another.
Teach mlxsw_sp_acl_erp_delta_fill() about this possibility and handle it
gracefully.
Reported-by: NAlex Kushnarov <alexanderk@mellanox.com>
Fixes: c22291f7 ("mlxsw: spectrum: acl: Implement delta for ERP")
Signed-off-by: NJiri Pirko <jiri@mellanox.com>
Signed-off-by: NIdo Schimmel <idosch@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Currently, the upper half of a 4-byte STATS_TYPE_PORT statistic ends
up in bits 47:32 of the return value, instead of bits 31:16 as they
should.

Fixes: 6e46e2d8 ("net: dsa: mv88e6xxx: Fix u64 statistics")
Signed-off-by: NRasmus Villemoes <rasmus.villemoes@prevas.dk>
Reviewed-by: NVivien Didelot <vivien.didelot@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

(At least) RTL8168e forgets its MAC address in PCI D3. To fix this set
the MAC address when resuming. For resuming from runtime-suspend we
had this in place already, for resuming from S3/S5 it was missing.

The commit referenced as being fixed isn't wrong, it's just the first
one where the patch applies cleanly.

Fixes: 0f07bd85 ("r8169: use dev_get_drvdata where possible")
Signed-off-by: NHeiner Kallweit <hkallweit1@gmail.com>
Reported-by: NAlbert Astals Cid <aacid@kde.org>
Tested-by: NAlbert Astals Cid <aacid@kde.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The netvsc VF skb handler should make sure that skb is not
shared. Similar logic already exists in bonding and team device
drivers.

This is not an issue in practice because the VF devicex
does not send up shared skb's. But the netvsc driver
should do the right thing if it did.

Fixes: 0c195567 ("netvsc: transparent VF management")
Signed-off-by: NStephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

PHY_INTERFACE_MODE_RGMII_RXID is less then TXID
so code to set tx delay is never called.

Fixes: 2a10154a ("net: phy: dp83867: Add TI dp83867 phy")
Signed-off-by: NMax Uvarov <muvarov@gmail.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Phy state machine calls _config_init just after
reset.
Signed-off-by: NMax Uvarov <muvarov@gmail.com>
Reviewed-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

After reset SGMII Autoneg timer is set to 2us (bits 6 and 5 are 01).
That is not enough to finalize autonegatiation on some devices.
Increase this timer duration to maximum supported 16ms.
Signed-off-by: NMax Uvarov <muvarov@gmail.com>
Cc: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

For supporting 10Mps speed in SGMII mode DP83867_10M_SGMII_RATE_ADAPT bit
of DP83867_10M_SGMII_CFG register has to be cleared by software.
That does not affect speeds 100 and 1000 so can be done on init.
Signed-off-by: NMax Uvarov <muvarov@gmail.com>
Cc: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Some boards do not have the PHY firmware programmed in the 3310's flash,
which leads to the PHY not working as expected.  Warn the user when the
PHY fails to boot the firmware and refuse to initialise.

Fixes: 20b2af32 ("net: phy: add Marvell Alaska X 88X3310 10Gigabit PHY support")
Signed-off-by: NRussell King <rmk+kernel@armlinux.org.uk>
Tested-by: NMaxime Chevallier <maxime.chevallier@bootlin.com>
Reviewed-by: NAndrew Lunn <andrew@lunn.ch>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Ensure that we supply the same phy interface mode to mac_link_down() as
we did for the corresponding mac_link_up() call.  This ensures that MAC
drivers that use the phy interface mode in these methods can depend on
mac_link_down() always corresponding to a mac_link_up() call for the
same interface mode.
Signed-off-by: NRussell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The sh_eth_close() resets the MAC and then calls phy_stop()
so that mdio read access result is incorrect without any error
according to kernel trace like below:

ifconfig-216   [003] .n..   109.133124: mdio_access: ee700000.ethernet-ffffffff read  phy:0x01 reg:0x00 val:0xffff

According to the hardware manual, the RMII mode should be set to 1
before operation the Ethernet MAC. However, the previous code was not
set to 1 after the driver issued the soft_reset in sh_eth_dev_exit()
so that the mdio read access result seemed incorrect. To fix the issue,
this patch adds a condition and set the RMII mode register in
sh_eth_dev_exit() for R-Car Gen2 and RZ/A1 SoCs.

Note that when I have tried to move the sh_eth_dev_exit() calling
after phy_stop() on sh_eth_close(), but it gets worse (kernel panic
happened and it seems that a register is accessed while the clock is
off).
Signed-off-by: NYoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

When CQE compression is enabled (Multi-host systems), compressed CQEs
might arrive to the driver rx, compressed CQEs don't have a valid hash
offload and the driver already reports a hash value of 0 and invalid hash
type on the skb for compressed CQEs, but this is not good enough.

On a congested PCIe, where CQE compression will kick in aggressively,
gro will deliver lots of out of order packets due to the invalid hash
and this might cause a serious performance drop.

The only valid solution, is to disable rxhash offload at all when CQE
compression is favorable (Multi-host systems).

Fixes: 7219ab34 ("net/mlx5e: CQE compression")
Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>

When register indr block for vlan device, it should check the real_dev
of vlan device is same as uplink device. Or it will set offload rule
to mlx5e which will never hit.

Fixes: 35a605db ("net/mlx5e: Offload TC e-switch rules with ingress VLAN device")
Signed-off-by: Nwenxu <wenxu@ucloud.cn>
Reviewed-by: NRoi Dayan <roid@mellanox.com>
Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>

root ns is yet another fs core node which is freed using kfree() by
tree_put_node().
Rest of the other fs core objects are also allocated using kmalloc
variants.

However, root ns memory is allocated using kvzalloc().
Hence allocate root ns memory using kzalloc().

Fixes: 25302363 ("net/mlx5_core: Flow steering tree initialization")
Signed-off-by: NParav Pandit <parav@mellanox.com>
Reviewed-by: NDaniel Jurgens <danielj@mellanox.com>
Reviewed-by: NMark Bloch <markb@mellanox.com>
Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>

In below code flow, for ingress acl table root ns memory leads
to double free.

mlx5_init_fs
  init_ingress_acls_root_ns()
    init_ingress_acl_root_ns
       kfree(steering->esw_ingress_root_ns);
       /* steering->esw_ingress_root_ns is not marked NULL */
  mlx5_cleanup_fs
    cleanup_ingress_acls_root_ns
       steering->esw_ingress_root_ns non NULL check passes.
       kfree(steering->esw_ingress_root_ns);
       /* double free */

Similar issue exist for other tables.

Hence zero out the pointers to not process the table again.

Fixes: 9b93ab98 ("net/mlx5: Separate ingress/egress namespaces for each vport")
Fixes: 40c3eebb49e51 ("net/mlx5: Add support in RDMA RX steering")
Signed-off-by: NParav Pandit <parav@mellanox.com>
Reviewed-by: NMark Bloch <markb@mellanox.com>
Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>

When root ns setup for rdma, sniffer tx and sniffer rx fails,
such root ns cleanup is done by the error unwinding path of
mlx5_cleanup_fs().
Below call graph shows an example for sniffer_rx_root_ns.

mlx5_init_fs()
  init_sniffer_rx_root_ns()
    cleanup_root_ns(steering->sniffer_rx_root_ns);
mlx5_cleanup_fs()
  cleanup_root_ns(steering->sniffer_rx_root_ns);
  /* double free of sniffer_rx_root_ns */

Hence, use the existing cleanup_fs to cleanup.

Fixes: d83eb50e ("net/mlx5: Add support in RDMA RX steering")
Fixes: 87d22483 ("net/mlx5: Add sniffer namespaces")
Signed-off-by: NParav Pandit <parav@mellanox.com>
Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>

In case mlx5_core_set_hca_defaults fails, it should jump to
mlx5_cleanup_fs, fix that.

Fixes: c85023e1 ("IB/mlx5: Add raw ethernet local loopback support")
Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>
Reviewed-by: NHuy Nguyen <huyn@mellanox.com>
Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>

Make sure only the portals for the online CPUs are used.
Without this change, there are issues when someone boots with
maxcpus=n, with n < actual number of cores available as frames
either received or corresponding to the transmit confirmation
path would be offered for dequeue to the offline CPU portals,
getting lost.
Signed-off-by: NMadalin Bucur <madalin.bucur@nxp.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Fix below issues in err code path of probe:
1. we don't need to unregister_netdev() because the netdev isn't
registered.
2. when register_netdev() fails, we also need to destroy bm pool for
HWBM case.

Fixes: dc35a10f ("net: mvneta: bm: add support for hardware buffer management")
Signed-off-by: NJisheng Zhang <Jisheng.Zhang@synaptics.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

If the subdriver defers probe, do not show an error message. It's
perfectly fine for this error to occur since the driver will get another
chance to probe after some time and will usually succeed after all of
the resources that it requires have been registered.
Signed-off-by: NThierry Reding <treding@nvidia.com>
Reviewed-by: NAndrew Lunn <andrew@lunn.ch>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Thats a known quirk in windows tcp stack it can produce 0xffff checksum.
Thats incorrect but it is.

Atlantic HW with LRO enabled handles that incorrectly and changes csum to
0xfffe - but indicates that csum is invalid. This causes driver to pass
packet to linux networking stack with CSUM_NONE, stack eventually drops
the packet.

There is a quirk in atlantic HW to enable correct processing of
0xffff incorrect csum. Enable it.

The visible bug is that windows link partner with software generated csums
caused TCP connection to be unstable since all packets that csum value
are dropped.
Reported-by: NDmitry Bezrukov <dmitry.bezrukov@aquantia.com>
Signed-off-by: NNikita Danilov <ndanilov@aquantia.com>
Signed-off-by: NIgor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Driver stops producing skbs on ring if a packet with FCS error
was coalesced into LRO session. Ring gets hang forever.

Thats a logical error in driver processing descriptors:
When rx_stat indicates MAC Error, next pointer and eop flags
are not filled. This confuses driver so it waits for descriptor 0
to be filled by HW.

Solution is fill next pointer and eop flag even for packets with FCS error.

Fixes: bab6de8f ("net: ethernet: aquantia: Atlantic A0 and B0 specific functions.")
Signed-off-by: NIgor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: NDmitry Bogdanov <dmitry.bogdanov@aquantia.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Atlantic hardware does not aggregate nor breaks LRO sessions
with bad csum packets. This means driver should take care of that.

If in LRO session there is a non-first descriptor with invalid
checksum (L2/L3/L4), the driver must account this information
in csum application logic.

Fixes: 018423e9 ("net: ethernet: aquantia: Add ring support code")
Signed-off-by: NIgor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: NDmitry Bogdanov <dmitry.bogdanov@aquantia.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

In case no other traffic happening on the ring, full tx cleanup
may not be completed. That may cause socket buffer to overflow
and tx traffic to stuck until next activity on the ring happens.

This is due to logic error in budget variable decrementor.
Variable is compared with zero, and then post decremented,
causing it to become MAX_INT. Solution is remove decrementor
from the `for` statement and rewrite it in a clear way.

Fixes: b647d398 ("net: aquantia: Add tx clean budget and valid budget handling logic")
Signed-off-by: NIgor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Building with Clang reports the redundant use of MODULE_DEVICE_TABLE():

drivers/net/ethernet/dec/tulip/de4x5.c:2110:1: error: redefinition of '__mod_eisa__de4x5_eisa_ids_device_table'
MODULE_DEVICE_TABLE(eisa, de4x5_eisa_ids);
^
./include/linux/module.h:229:21: note: expanded from macro 'MODULE_DEVICE_TABLE'
extern typeof(name) __mod_##type##__##name##_device_table               \
                    ^
<scratch space>:90:1: note: expanded from here
__mod_eisa__de4x5_eisa_ids_device_table
^
drivers/net/ethernet/dec/tulip/de4x5.c:2100:1: note: previous definition is here
MODULE_DEVICE_TABLE(eisa, de4x5_eisa_ids);
^
./include/linux/module.h:229:21: note: expanded from macro 'MODULE_DEVICE_TABLE'
extern typeof(name) __mod_##type##__##name##_device_table               \
                    ^
<scratch space>:85:1: note: expanded from here
__mod_eisa__de4x5_eisa_ids_device_table
^

This drops the one further from the table definition to match the common
use of MODULE_DEVICE_TABLE().

Fixes: 07563c71 ("EISA bus MODALIAS attributes support")
Signed-off-by: NKees Cook <keescook@chromium.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Function dpaa2_eth_cls_key_size() expects a 64bit argument,
but DPAA2_ETH_DIST_ALL is defined as UINT_MAX. Fix this.
Signed-off-by: NIoana Radulescu <ruxandra.radulescu@nxp.com>
Reported-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Use PTR_ERR_OR_ZERO instead of PTR_ERR in cases where
zero is a valid input. Reported by smatch.
Signed-off-by: NIoana Radulescu <ruxandra.radulescu@nxp.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>