as too large frame sizes on some configurations. On the
ARM side, the compiler was messing up shadow stacks between
EL1 and EL2 code, which is easily fixed with __always_inline.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM fixes from Paolo Bonzini:
"More bugfixes, including a few remaining "make W=1" issues such as too
large frame sizes on some configurations.
On the ARM side, the compiler was messing up shadow stacks between EL1
and EL2 code, which is easily fixed with __always_inline"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: VMX: check descriptor table exits on instruction emulation
kvm: x86: Limit the number of "kvm: disabled by bios" messages
KVM: x86: avoid useless copy of cpufreq policy
KVM: allow disabling -Werror
KVM: x86: allow compiling as non-module with W=1
KVM: Pre-allocate 1 cpumask variable per cpu for both pv tlb and pv ipis
KVM: Introduce pv check helpers
KVM: let declaration of kvm_get_running_vcpus match implementation
KVM: SVM: allocate AVIC data structures based on kvm_amd module parameter
arm64: Ask the compiler to __always_inline functions used by KVM at HYP
KVM: arm64: Define our own swab32() to avoid a uapi static inline
KVM: arm64: Ask the compiler to __always_inline functions used at HYP
kvm: arm/arm64: Fold VHE entry/exit work into kvm_vcpu_run_vhe()
KVM: arm/arm64: Fix up includes for trace.h
KVM emulates UMIP on hardware that doesn't support it by setting the
'descriptor table exiting' VM-execution control and performing
instruction emulation. When running nested, this emulation is broken as
KVM refuses to emulate L2 instructions by default.
Correct this regression by allowing the emulation of descriptor table
instructions if L1 hasn't requested 'descriptor table exiting'.
Fixes: 07721feee4 ("KVM: nVMX: Don't emulate instructions in guest mode")
Reported-by: Jan Kiszka <jan.kiszka@web.de>
Cc: stable@vger.kernel.org
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Jim Mattson <jmattson@google.com>
Signed-off-by: Oliver Upton <oupton@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
before
[6.418252] brcmfmac: F1 signature read @0x18000000=0x17224356
[6.435663] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac4356-sdio for chip BCM4356/2
[6.551259] brcmfmac: brcmf_sdiod_ramrw: membytes transfer failed
[6.551275] brcmfmac: brcmf_sdio_verifymemory: error -84 on reading 2048 membytes at 0x00184000
[6.551352] brcmfmac: brcmf_sdio_download_firmware: dongle image file download failed
after
[6.657165] brcmfmac: F1 signature read @0x18000000=0x17224356
[6.660807] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac4356-sdio for chip BCM4356/2
[6.918643] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac4356-sdio for chip BCM4356/2
[6.918734] brcmfmac: brcmf_c_process_clm_blob: no clm_blob available (err=-2), device may have limited channels available
[6.922724] brcmfmac: brcmf_c_preinit_dcmds: Firmware: BCM4356/2 wl0: Jun 16 2015 14:25:06 version 7.35.184.r1 (TOB) (r559293) FWID 01-b22ae69c
Fixes: adc52bf7ef ("arm64: dts: meson: fix mmc v2 chips max frequencies")
Suggested-by: Art Nikpal <email2tema@gmail.com>
Signed-off-by: Christian Hewitt <christianshewitt@gmail.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Link: https://lore.kernel.org/r/1582212790-11402-1-git-send-email-christianshewitt@gmail.com
The baudrate set byte of wcn3991 in the NVM tag is byte 1, not byte 2.
This patch will set correct byte for wcn3991.
Signed-off-by: Rocky Liao <rjliao@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
When we add peer address with metric configured, IPv4 could set the dest
metric correctly, but IPv6 do not. e.g.
]# ip addr add 192.0.2.1 peer 192.0.2.2/32 dev eth1 metric 20
]# ip route show dev eth1
192.0.2.2 proto kernel scope link src 192.0.2.1 metric 20
]# ip addr add 2001:db8::1 peer 2001:db8::2/128 dev eth1 metric 20
]# ip -6 route show dev eth1
2001:db8::1 proto kernel metric 20 pref medium
2001:db8::2 proto kernel metric 256 pref medium
Fix this by using configured metric instead of default one.
Reported-by: Jianlin Shi <jishi@redhat.com>
Fixes: 8308f3ff17 ("net/ipv6: Add support for specifying metric of connected routes")
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:
struct foo {
int stuff;
struct boo array[];
};
By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.
Also, notice that, dynamic memory allocations won't be affected by
this change:
"Flexible array members have incomplete type, and so the sizeof operator
may not be applied. As a quirk of the original implementation of
zero-length arrays, sizeof evaluates to zero."[1]
This issue was found with the help of Coccinelle.
[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 7649773293 ("cxgb3/l2t: Fix undefined behaviour")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:
struct foo {
int stuff;
struct boo array[];
};
By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.
Also, notice that, dynamic memory allocations won't be affected by
this change:
"Flexible array members have incomplete type, and so the sizeof operator
may not be applied. As a quirk of the original implementation of
zero-length arrays, sizeof evaluates to zero."[1]
This issue was found with the help of Coccinelle.
[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 7649773293 ("cxgb3/l2t: Fix undefined behaviour")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:
struct foo {
int stuff;
struct boo array[];
};
By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.
Also, notice that, dynamic memory allocations won't be affected by
this change:
"Flexible array members have incomplete type, and so the sizeof operator
may not be applied. As a quirk of the original implementation of
zero-length arrays, sizeof evaluates to zero."[1]
This issue was found with the help of Coccinelle.
[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 7649773293 ("cxgb3/l2t: Fix undefined behaviour")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:
struct foo {
int stuff;
struct boo array[];
};
By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.
Also, notice that, dynamic memory allocations won't be affected by
this change:
"Flexible array members have incomplete type, and so the sizeof operator
may not be applied. As a quirk of the original implementation of
zero-length arrays, sizeof evaluates to zero."[1]
This issue was found with the help of Coccinelle.
[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 7649773293 ("cxgb3/l2t: Fix undefined behaviour")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:
struct foo {
int stuff;
struct boo array[];
};
By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.
Also, notice that, dynamic memory allocations won't be affected by
this change:
"Flexible array members have incomplete type, and so the sizeof operator
may not be applied. As a quirk of the original implementation of
zero-length arrays, sizeof evaluates to zero."[1]
This issue was found with the help of Coccinelle.
[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 7649773293 ("cxgb3/l2t: Fix undefined behaviour")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:
struct foo {
int stuff;
struct boo array[];
};
By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.
Also, notice that, dynamic memory allocations won't be affected by
this change:
"Flexible array members have incomplete type, and so the sizeof operator
may not be applied. As a quirk of the original implementation of
zero-length arrays, sizeof evaluates to zero."[1]
This issue was found with the help of Coccinelle.
[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 7649773293 ("cxgb3/l2t: Fix undefined behaviour")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:
struct foo {
int stuff;
struct boo array[];
};
By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.
Also, notice that, dynamic memory allocations won't be affected by
this change:
"Flexible array members have incomplete type, and so the sizeof operator
may not be applied. As a quirk of the original implementation of
zero-length arrays, sizeof evaluates to zero."[1]
This issue was found with the help of Coccinelle.
[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 7649773293 ("cxgb3/l2t: Fix undefined behaviour")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:
struct foo {
int stuff;
struct boo array[];
};
By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.
Also, notice that, dynamic memory allocations won't be affected by
this change:
"Flexible array members have incomplete type, and so the sizeof operator
may not be applied. As a quirk of the original implementation of
zero-length arrays, sizeof evaluates to zero."[1]
This issue was found with the help of Coccinelle.
[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 7649773293 ("cxgb3/l2t: Fix undefined behaviour")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:
struct foo {
int stuff;
struct boo array[];
};
By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.
Also, notice that, dynamic memory allocations won't be affected by
this change:
"Flexible array members have incomplete type, and so the sizeof operator
may not be applied. As a quirk of the original implementation of
zero-length arrays, sizeof evaluates to zero."[1]
This issue was found with the help of Coccinelle.
[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 7649773293 ("cxgb3/l2t: Fix undefined behaviour")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:
struct foo {
int stuff;
struct boo array[];
};
By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.
Also, notice that, dynamic memory allocations won't be affected by
this change:
"Flexible array members have incomplete type, and so the sizeof operator
may not be applied. As a quirk of the original implementation of
zero-length arrays, sizeof evaluates to zero."[1]
This issue was found with the help of Coccinelle.
[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 7649773293 ("cxgb3/l2t: Fix undefined behaviour")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:
struct foo {
int stuff;
struct boo array[];
};
By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.
Also, notice that, dynamic memory allocations won't be affected by
this change:
"Flexible array members have incomplete type, and so the sizeof operator
may not be applied. As a quirk of the original implementation of
zero-length arrays, sizeof evaluates to zero."[1]
This issue was found with the help of Coccinelle.
[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 7649773293 ("cxgb3/l2t: Fix undefined behaviour")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Cris Forno says:
====================
net/ethtool: Introduce link_ksettings API for virtual network devices
This series provides an API for drivers of virtual network devices that
allows users to alter initial device speed and duplex settings to reflect
the actual capabilities of underlying hardware. The changes made include
a helper function ethtool_virtdev_set_link_ksettings, which is used to
retrieve alterable link settings. In addition, there is a new ethtool
function defined to validate those settings. These changes resolve code
duplication for existing virtual network drivers that have already
implemented this behavior. In the case of the ibmveth driver, this API is
used to provide this capability for the first time.
---
v7: - removed ethtool_validate_cmd function pointer parameter from
ethtool_virtdev_set_link_ksettings since none of the virtual drivers
pass in a custom validate function as suggested by Michal Kubecek.
v6: - removed netvsc_validate_ethtool_ss_cmd(). netvsc_drv now uses
ethtool_virtdev_validate_cmd() instead as suggested by Michal Kubecek
and approved by Haiyang Zhang.
- matched handler argument name of ethtool_virtdev_set_link_ksettings
in declaration and definition as suggested by Michal Kubecek.
- shortened validate variable assignment in
ethtool_virtdev_set_link_ksettings as suggested by Michal Kubecek.
v5: - virtdev_validate_link_ksettings is taken out of the ethtool global
structure and is instead added as an argument to
ethtool_virtdev_set_link_ksettings as suggested by Jakub Kicinski.
v4: - Cleaned up return statement in ethtool_virtdev_validate_cmd based
off of Michal Kubecek's and Thomas Falcon's suggestion.
- If the netvsc driver is using the VF device in order to get
accelerated networking, the real speed and duplex is reported by using
the VF device as suggested by Stephen Hemminger.
- The speed and duplex variables are now passed by value rather than
passed by pointer as suggested by Willem de Bruijin and Michal
Kubecek.
- Removed ethtool_virtdev_get_link_ksettings since it was too simple
to warrant a helper function.
v3: - Factored out duplicated code to core/ethtool to provide API to
virtual drivers
v2: - Updated default driver speed/duplex settings to avoid breaking
existing setups
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
With the ethtool_virtdev_set_link_ksettings function in core/ethtool.c,
ibmveth, netvsc, and virtio now use the core's helper function.
Funtionality changes that pertain to ibmveth driver include:
1. Changed the initial hardcoded link speed to 1GB.
2. Added support for allowing a user to change the reported link
speed via ethtool.
Functionality changes to the netvsc driver include:
1. When netvsc_get_link_ksettings is called, it will defer to the VF
device if it exists to pull accelerated networking values, otherwise
pull default or user-defined values.
2. Similarly, if netvsc_set_link_ksettings called and a VF device
exists, the real values of speed and duplex are changed.
Signed-off-by: Cris Forno <cforno12@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Three virtual devices (ibmveth, virtio_net, and netvsc) all have
similar code to set link settings and validate ethtool command. To
eliminate duplication of code, it is factored out into core/ethtool.c.
Signed-off-by: Cris Forno <cforno12@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
If the switch is not hardware reset on a warm boot, interrupts can be
left enabled, and possibly pending. This will cause us to enter an
infinite loop trying to service an interrupt we are unable to handle,
thereby preventing the kernel from booting.
Ensure that the global 2 interrupt sources are disabled before we claim
the parent interrupt.
Observed on the ZII development revision B and C platforms with
reworked serdes support, and using reboot -f to reboot the platform.
Fixes: dc30c35be7 ("net: dsa: mv88e6xxx: Implement interrupt support.")
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Taehee Yoo says:
====================
hsr: several code cleanup for hsr module
This patchset is to clean up hsr module code.
1. The first patch is to use debugfs_remove_recursive().
If it uses debugfs_remove_recursive() instead of debugfs_remove(),
hsr_priv() doesn't need to have "node_tbl_file" pointer variable.
2. The second patch is to use extack error message.
If HSR uses the extack instead of netdev_info(), users can get
error messages immediately without any checking the kernel message.
3. The third patch is to use netdev_err() instead of WARN_ONCE().
When a packet is being sent, hsr_addr_subst_dest() is called and
it tries to find the node with the ethernet destination address.
If it couldn't find a node, it warns with WARN_ONCE().
But, using WARN_ONCE() is a little bit overdoing.
So, in this patch, netdev_err() is used instead.
4. The fourth patch is to remove unnecessary rcu_read_{lock/unlock}().
There are some rcu_read_{lock/unlock}() in hsr module and some of
them are unnecessary. In this patch,
these unnecessary rcu_read_{lock/unlock}() will be removed.
5. The fifth patch is to use upper/lower device infrastructure.
netdev_upper_dev_link() is useful to manage lower/upper interfaces.
And this function internally validates looping, maximum depth.
If hsr module uses upper/lower device infrastructure,
it can prevent these above problems.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
netdev_upper_dev_link() is useful to manage lower/upper interfaces.
And this function internally validates looping, maximum depth.
All or most virtual interfaces that could have a real interface
(e.g. macsec, macvlan, ipvlan etc.) use lower/upper infrastructure.
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In order to access the port list, the hsr_port_get_hsr() is used.
And this is protected by RTNL and RCU.
The hsr_fill_info(), hsr_check_carrier(), hsr_dev_open() and
hsr_get_max_mtu() are protected by RTNL.
So, rcu_read_lock() in these functions are not necessary.
The hsr_handle_frame() also uses rcu_read_lock() but this function
is called by packet path.
It's already protected by RCU.
So, the rcu_read_lock() in hsr_handle_frame() can be removed.
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When HSR interface is sending a frame, it finds a node with
the destination ethernet address from the list.
If there is no node, it calls WARN_ONCE().
But, using WARN_ONCE() for this situation is a little bit overdoing.
So, in this patch, the netdev_err() is used instead.
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
If HSR uses the extack instead of netdev_info(), users can get
error messages immediately without any checking the kernel message.
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
If it uses debugfs_remove_recursive() instead of debugfs_remove(),
hsr_priv() doesn't need to have "node_tbl_file" pointer variable.
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The port to phylink was done as close as possible to initial
functionality.
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Acked-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Esben Haabendal says:
====================
net: ll_temac: RX/TX ring size and coalesce ethtool parameters
This series adds support for RX/TX ring size and irq coalesce ethtool
parameters to ll_temac driver.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Please note that the delays are calculated based on typical
parameters. But as TEMAC is an HDL IP, designs may vary, and future
work might be needed to make this calculation configurable.
Signed-off-by: Esben Haabendal <esben@geanix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add support for setting the RX and TX ring sizes for this driver using
ethtool. Also increase the default RX ring size as the previous default
was far too low for good performance in some configurations.
Signed-off-by: Esben Haabendal <esben@geanix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The start_p variable was included in the initial commit,
commit 9274498953 ("net: add Xilinx ll_temac device driver"),
but has never had any real use.
Signed-off-by: Esben Haabendal <esben@geanix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The tx_bd_next field was included in the initial commit,
commit 9274498953 ("net: add Xilinx ll_temac device driver"),
but has never had any real use.
Signed-off-by: Esben Haabendal <esben@geanix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When debugging via PRINTK() is not enabled, make the PRINTK()
macro be an empty do-while block.
Thix fixes a gcc warning when -Wextra is set:
../drivers/atm/nicstar.c:1819:23: warning: suggest braces around empty body in an ‘else’ statement [-Wempty-body]
I have verified that there is no object code change (with gcc 7.5.0).
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Chas Williams <3chas3@gmail.com>
Cc: linux-atm-general@lists.sourceforge.net
Cc: netdev@vger.kernel.org
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:
struct foo {
int stuff;
struct boo array[];
};
By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.
Also, notice that, dynamic memory allocations won't be affected by
this change:
"Flexible array members have incomplete type, and so the sizeof operator
may not be applied. As a quirk of the original implementation of
zero-length arrays, sizeof evaluates to zero."[1]
This issue was found with the help of Coccinelle.
[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 7649773293 ("cxgb3/l2t: Fix undefined behaviour")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Userspace might send a batch that is composed of several netlink
messages. The netlink_ack() function must use the pointer to the netlink
header as base to calculate the bad attribute offset.
Fixes: 2d4bc93368 ("netlink: extended ACK reporting")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dell USB Type C docking WD19/WD19DC attaches additional peripherals as:
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/6p, 5000M
|__ Port 1: Dev 11, If 0, Class=Hub, Driver=hub/4p, 5000M
|__ Port 3: Dev 12, If 0, Class=Hub, Driver=hub/4p, 5000M
|__ Port 4: Dev 13, If 0, Class=Vendor Specific Class,
Driver=r8152, 5000M
where usb 2-1-3 is a hub connecting all USB Type-A/C ports on the dock.
When hotplugging such dock with additional usb devices already attached on
it, the probing process may reset usb 2.1 port, therefore r8152 ethernet
device is also reset. However, during r8152 device init there are several
for-loops that, when it's unable to retrieve hardware registers due to
being disconnected from USB, may take up to 14 seconds each in practice,
and that has to be completed before USB may re-enumerate devices on the
bus. As a result, devices attached to the dock will only be available
after nearly 1 minute after the dock was plugged in:
[ 216.388290] [250] r8152 2-1.4:1.0: usb_probe_interface
[ 216.388292] [250] r8152 2-1.4:1.0: usb_probe_interface - got id
[ 258.830410] r8152 2-1.4:1.0 (unnamed net_device) (uninitialized): PHY not ready
[ 258.830460] r8152 2-1.4:1.0 (unnamed net_device) (uninitialized): Invalid header when reading pass-thru MAC addr
[ 258.830464] r8152 2-1.4:1.0 (unnamed net_device) (uninitialized): Get ether addr fail
This happens in, for example, r8153_init:
static int generic_ocp_read(struct r8152 *tp, u16 index, u16 size,
void *data, u16 type)
{
if (test_bit(RTL8152_UNPLUG, &tp->flags))
return -ENODEV;
...
}
static u16 ocp_read_word(struct r8152 *tp, u16 type, u16 index)
{
u32 data;
...
generic_ocp_read(tp, index, sizeof(tmp), &tmp, type | byen);
data = __le32_to_cpu(tmp);
...
return (u16)data;
}
static void r8153_init(struct r8152 *tp)
{
...
if (test_bit(RTL8152_UNPLUG, &tp->flags))
return;
for (i = 0; i < 500; i++) {
if (ocp_read_word(tp, MCU_TYPE_PLA, PLA_BOOT_CTRL) &
AUTOLOAD_DONE)
break;
msleep(20);
}
...
}
Since ocp_read_word() doesn't check the return status of
generic_ocp_read(), and the only exit condition for the loop is to have
a match in the returned value, such loops will only ends after exceeding
its maximum runs when the device has been marked as disconnected, which
takes 500 * 20ms = 10 seconds in theory, 14 in practice.
To solve this long latency another test to RTL8152_UNPLUG flag should be
added after those 20ms sleep to skip unnecessary loops, so that the device
probe can complete early and proceed to parent port reset/reprobe process.
This can be reproduced on all kernel versions up to latest v5.6-rc2, but
after v5.5-rc7 the reproduce rate is dramatically lowered to 1/30 or less
while it was around 1/2.
Signed-off-by: You-Sheng Yang <vicamo.yang@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull i2c fixes from Wolfram Sang:
"I2C has three driver bugfixes for you. We agreed on the Mac regression
to go in via I2C"
* 'i2c/for-current-fixed' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
macintosh: therm_windtunnel: fix regression when instantiating devices
i2c: altera: Fix potential integer overflow
i2c: jz4780: silence log flood on txabrt
Alexei Starovoitov says:
====================
pull-request: bpf-next 2020-02-28
The following pull-request contains BPF updates for your *net-next* tree.
We've added 41 non-merge commits during the last 7 day(s) which contain
a total of 49 files changed, 1383 insertions(+), 499 deletions(-).
The main changes are:
1) BPF and Real-Time nicely co-exist.
2) bpftool feature improvements.
3) retrieve bpf_sk_storage via INET_DIAG.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
If sbi->s_flex_groups_allocated is zero and the first allocation fails
then this code will crash. The problem is that "i--" will set "i" to
-1 but when we compare "i >= sbi->s_flex_groups_allocated" then the -1
is type promoted to unsigned and becomes UINT_MAX. Since UINT_MAX
is more than zero, the condition is true so we call kvfree(new_groups[-1]).
The loop will carry on freeing invalid memory until it crashes.
Fixes: 7c990728b9 ("ext4: fix potential race between s_flex_groups online resizing and access")
Reviewed-by: Suraj Jitindar Singh <surajjs@amazon.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: stable@kernel.org
Link: https://lore.kernel.org/r/20200228092142.7irbc44yaz3by7nb@kili.mountain
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Removing attach_adapter from this driver caused a regression for at
least some machines. Those machines had the sensors described in their
DT, too, so they didn't need manual creation of the sensor devices. The
old code worked, though, because manual creation came first. Creation of
DT devices then failed later and caused error logs, but the sensors
worked nonetheless because of the manually created devices.
When removing attach_adaper, manual creation now comes later and loses
the race. The sensor devices were already registered via DT, yet with
another binding, so the driver could not be bound to it.
This fix refactors the code to remove the race and only manually creates
devices if there are no DT nodes present. Also, the DT binding is updated
to match both, the DT and manually created devices. Because we don't
know which device creation will be used at runtime, the code to start
the kthread is moved to do_probe() which will be called by both methods.
Fixes: 3e7bed5271 ("macintosh: therm_windtunnel: drop using attach_adapter")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=201723
Reported-by: Erhard Furtner <erhard_f@mailbox.org>
Tested-by: Erhard Furtner <erhard_f@mailbox.org>
Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Cc: stable@kernel.org # v4.19+
5.6, please pull the following:
- Stefan adds missing Device Tree properties for the Raspberry Pi 3B and
4 LEDs to have proper default configuration
- Nicolas adds an alias for the PCIe root complex node that is looked up
by the Raspberry Pi firmware for patching in specific properties
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Merge tag 'arm-soc/for-5.6/devicetree-fixes' of https://github.com/Broadcom/stblinux into arm/fixes
This pull request contains Broadcom ARM-based SoCs Device Tree fixes for
5.6, please pull the following:
- Stefan adds missing Device Tree properties for the Raspberry Pi 3B and
4 LEDs to have proper default configuration
- Nicolas adds an alias for the PCIe root complex node that is looked up
by the Raspberry Pi firmware for patching in specific properties
* tag 'arm-soc/for-5.6/devicetree-fixes' of https://github.com/Broadcom/stblinux:
ARM: dts: bcm2711: Add pcie0 alias
ARM: dts: bcm283x: Add missing properties to the PWR LED
Link: https://lore.kernel.org/r/20200228181144.15148-2-f.fainelli@gmail.com
Signed-off-by: Olof Johansson <olof@lixom.net>
This series of changes contains few code fixes for issues
recently discovered:
- A build fix for ARMv6 only configs when CONFIG_HAVE_ARM_SMCCC is
not set
- A fix for ti-sysc quirk handling for 1-wire hdq reset
And a handful of dts fixes that I had queued up and should
have already sent earlier instead of waiting for the code
fixes to get sorted out:
- Fix naming of vsys_3v3 regulator for dra7-evm
- Fix incorrect OPP node names for am437x-idk-evm
- Fix IPU1 mux clock parent source for dra7
- Add missing PWM property for dra7 timers 13 to 16
- Add missing dma-ranges for dra7 PCIe nodes
- Fix mmc3 max-frequency for dra76x
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Merge tag 'omap-for-v5.6/fixes-rc3-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into arm/fixes
Few fixes for omaps for v5.6-rc cycle
This series of changes contains few code fixes for issues
recently discovered:
- A build fix for ARMv6 only configs when CONFIG_HAVE_ARM_SMCCC is
not set
- A fix for ti-sysc quirk handling for 1-wire hdq reset
And a handful of dts fixes that I had queued up and should
have already sent earlier instead of waiting for the code
fixes to get sorted out:
- Fix naming of vsys_3v3 regulator for dra7-evm
- Fix incorrect OPP node names for am437x-idk-evm
- Fix IPU1 mux clock parent source for dra7
- Add missing PWM property for dra7 timers 13 to 16
- Add missing dma-ranges for dra7 PCIe nodes
- Fix mmc3 max-frequency for dra76x
* tag 'omap-for-v5.6/fixes-rc3-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP2+: Fix compile if CONFIG_HAVE_ARM_SMCCC is not set
arm: dts: dra76x: Fix mmc3 max-frequency
ARM: dts: dra7: Add "dma-ranges" property to PCIe RC DT nodes
bus: ti-sysc: Fix 1-wire reset quirk
ARM: dts: dra7-l4: mark timer13-16 as pwm capable
ARM: dts: dra7xx-clocks: Fixup IPU1 mux clock parent source
ARM: dts: am437x-idk-evm: Fix incorrect OPP node names
ARM: dts: dra7-evm: Rename evm_3v3 regulator to vsys_3v3
Link: https://lore.kernel.org/r/pull-1582903541-589933@atomide.com
Signed-off-by: Olof Johansson <olof@lixom.net>
journal_head::b_transaction and journal_head::b_next_transaction could
be accessed concurrently as noticed by KCSAN,
LTP: starting fsync04
/dev/zero: Can't open blockdev
EXT4-fs (loop0): mounting ext3 file system using the ext4 subsystem
EXT4-fs (loop0): mounted filesystem with ordered data mode. Opts: (null)
==================================================================
BUG: KCSAN: data-race in __jbd2_journal_refile_buffer [jbd2] / jbd2_write_access_granted [jbd2]
write to 0xffff99f9b1bd0e30 of 8 bytes by task 25721 on cpu 70:
__jbd2_journal_refile_buffer+0xdd/0x210 [jbd2]
__jbd2_journal_refile_buffer at fs/jbd2/transaction.c:2569
jbd2_journal_commit_transaction+0x2d15/0x3f20 [jbd2]
(inlined by) jbd2_journal_commit_transaction at fs/jbd2/commit.c:1034
kjournald2+0x13b/0x450 [jbd2]
kthread+0x1cd/0x1f0
ret_from_fork+0x27/0x50
read to 0xffff99f9b1bd0e30 of 8 bytes by task 25724 on cpu 68:
jbd2_write_access_granted+0x1b2/0x250 [jbd2]
jbd2_write_access_granted at fs/jbd2/transaction.c:1155
jbd2_journal_get_write_access+0x2c/0x60 [jbd2]
__ext4_journal_get_write_access+0x50/0x90 [ext4]
ext4_mb_mark_diskspace_used+0x158/0x620 [ext4]
ext4_mb_new_blocks+0x54f/0xca0 [ext4]
ext4_ind_map_blocks+0xc79/0x1b40 [ext4]
ext4_map_blocks+0x3b4/0x950 [ext4]
_ext4_get_block+0xfc/0x270 [ext4]
ext4_get_block+0x3b/0x50 [ext4]
__block_write_begin_int+0x22e/0xae0
__block_write_begin+0x39/0x50
ext4_write_begin+0x388/0xb50 [ext4]
generic_perform_write+0x15d/0x290
ext4_buffered_write_iter+0x11f/0x210 [ext4]
ext4_file_write_iter+0xce/0x9e0 [ext4]
new_sync_write+0x29c/0x3b0
__vfs_write+0x92/0xa0
vfs_write+0x103/0x260
ksys_write+0x9d/0x130
__x64_sys_write+0x4c/0x60
do_syscall_64+0x91/0xb05
entry_SYSCALL_64_after_hwframe+0x49/0xbe
5 locks held by fsync04/25724:
#0: ffff99f9911093f8 (sb_writers#13){.+.+}, at: vfs_write+0x21c/0x260
#1: ffff99f9db4c0348 (&sb->s_type->i_mutex_key#15){+.+.}, at: ext4_buffered_write_iter+0x65/0x210 [ext4]
#2: ffff99f5e7dfcf58 (jbd2_handle){++++}, at: start_this_handle+0x1c1/0x9d0 [jbd2]
#3: ffff99f9db4c0168 (&ei->i_data_sem){++++}, at: ext4_map_blocks+0x176/0x950 [ext4]
#4: ffffffff99086b40 (rcu_read_lock){....}, at: jbd2_write_access_granted+0x4e/0x250 [jbd2]
irq event stamp: 1407125
hardirqs last enabled at (1407125): [<ffffffff980da9b7>] __find_get_block+0x107/0x790
hardirqs last disabled at (1407124): [<ffffffff980da8f9>] __find_get_block+0x49/0x790
softirqs last enabled at (1405528): [<ffffffff98a0034c>] __do_softirq+0x34c/0x57c
softirqs last disabled at (1405521): [<ffffffff97cc67a2>] irq_exit+0xa2/0xc0
Reported by Kernel Concurrency Sanitizer on:
CPU: 68 PID: 25724 Comm: fsync04 Tainted: G L 5.6.0-rc2-next-20200221+ #7
Hardware name: HPE ProLiant DL385 Gen10/ProLiant DL385 Gen10, BIOS A40 07/10/2019
The plain reads are outside of jh->b_state_lock critical section which result
in data races. Fix them by adding pairs of READ|WRITE_ONCE().
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Qian Cai <cai@lca.pw>
Link: https://lore.kernel.org/r/20200222043111.2227-1-cai@lca.pw
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Support for Amlogic Meson SoCs depends on ARCH_MULTI_V7, and thus on
ARCH_MULTIPLATFORM.
As the latter selects COMMON_CLK, there is no need for ARCH_MESON to
select COMMON_CLK.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: linux-amlogic@lists.infradead.org
Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://lore.kernel.org/r/20200121103722.1781-12-geert+renesas@glider.be
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Four small fixes. Three are in drivers for fairly obvious bugs. The
fourth is a set of regressions introduced by the compat_ioctl changes
because some of the compat updates wrongly replaced .ioctl instead of
.compat_ioctl.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Four small fixes.
Three are in drivers for fairly obvious bugs. The fourth is a set of
regressions introduced by the compat_ioctl changes because some of the
compat updates wrongly replaced .ioctl instead of .compat_ioctl"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: compat_ioctl: cdrom: Replace .ioctl with .compat_ioctl in four appropriate places
scsi: zfcp: fix wrong data and display format of SFP+ temperature
scsi: sd_sbc: Fix sd_zbc_report_zones()
scsi: libfc: free response frame from GPN_ID
The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:
struct foo {
int stuff;
struct boo array[];
};
By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.
Also, notice that, dynamic memory allocations won't be affected by
this change:
"Flexible array members have incomplete type, and so the sizeof operator
may not be applied. As a quirk of the original implementation of
zero-length arrays, sizeof evaluates to zero."[1]
This issue was found with the help of Coccinelle.
[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 7649773293 ("cxgb3/l2t: Fix undefined behaviour")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
In a recent change to the SPI subsystem [1], a new `delay` struct was added
to replace the `delay_usecs`. This change replaces the current
`delay_usecs` with `delay` for this driver.
The `spi_transfer_delay_exec()` function [in the SPI framework] makes sure
that both `delay_usecs` & `delay` are used (in this order to preserve
backwards compatibility).
[1] commit bebcfd272d ("spi: introduce `delay` field for
`spi_transfer` + spi_transfer_delay_exec()")
Signed-off-by: Sergiu Cuciurean <sergiu.cuciurean@analog.com>
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
Commit 2ae27137b2 ("x86: mm: convert dump_pagetables to use
walk_page_range") broke Xen PV guests as the hypervisor reserved hole in
the memory map was not taken into account.
Fix that by starting the kernel range only at GUARD_HOLE_END_ADDR.
Fixes: 2ae27137b2 ("x86: mm: convert dump_pagetables to use walk_page_range")
Reported-by: Julien Grall <julien@xen.org>
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Julien Grall <julien@xen.org>
Link: https://lkml.kernel.org/r/20200221103851.7855-1-jgross@suse.com
