David S. Miller [Thu, 18 Nov 2021 11:49:52 +0000 (11:49 +0000)]
Merge branch '10GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue
Tony Nguyen says:
====================
10GbE Intel Wired LAN Driver Updates 2021-11-17
Radoslaw Tyl says:
The change is a consequence of errors reported by the ixgbevf driver
while starting several virtual guests at the same time on ESX host.
During this, VF was not able to communicate correctly with the PF,
as a result reported "PF still in reset state. Is the PF interface up?"
and then goes to locked state. The only thing left was to reload
the VF driver on the guest OS.
The background of the problem is that the current PFU and VFU
semaphore locking mechanism between sender and receiver may cause
overriding Mailbox memory (VFMBMEM), in such scenario receiver of
the original message will read the invalid, corrupted or one (or more)
message may be lost.
This change is actually as a support for communication with PF ESX
driver and does not contains changes and support for ixgbe driver.
For maintain backward compatibility, previous communication method
has been preserved in the form of LEGACY functions.
In the future there is a plan to add a support for a 1.5 mailbox API
communication also to ixgbe driver.
====================
David S. Miller [Thu, 18 Nov 2021 11:48:33 +0000 (11:48 +0000)]
Merge branch '40GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-
queue
Tony Nguyen says:
====================
Intel Wired LAN Driver Updates 2021-11-17
This series contains updates to i40e driver only.
Eryk adds accounting for VLAN header in packet size when VF port VLAN is
configured. He also fixes TC queue distribution when the user has changed
queue counts as well as for configuration of VF ADQ which caused dropped
packets.
Michal adds tracking for when a VSI is being released to prevent null
pointer dereference when managing filters.
Karen ensures PF successfully initiates VF requested reset which could
cause a call trace otherwise.
Jedrzej moves validation of channel queue value earlier to prevent
partial configuration when the value is invalid.
Grzegorz corrects the reported error when adding filter fails.
====================
Florian Fainelli [Wed, 17 Nov 2021 17:36:29 +0000 (09:36 -0800)]
net: mdio: Replaced BUG_ON() with WARN()
Killing the kernel because a certain MDIO bus object is not in the
desired state at various points in the registration or unregistration
paths is excessive and is not helping in troubleshooting or fixing
issues. Replace the BUG_ON() with WARN() and print out the MDIO bus name
to facilitate debugging.
Jordy Zomer [Wed, 17 Nov 2021 19:06:48 +0000 (20:06 +0100)]
ipv6: check return value of ipv6_skip_exthdr
The offset value is used in pointer math on skb->data.
Since ipv6_skip_exthdr may return -1 the pointer to uh and th
may not point to the actual udp and tcp headers and potentially
overwrite other stuff. This is why I think this should be checked.
Jesse Brandeburg [Wed, 17 Nov 2021 20:59:52 +0000 (12:59 -0800)]
e100: fix device suspend/resume
As reported in [1], e100 was no longer working for suspend/resume
cycles. The previous commit mentioned in the fixes appears to have
broken things and this attempts to practice best known methods for
device power management and keep wake-up working while allowing
suspend/resume to work. To do this, I reorder a little bit of code
and fix the resume path to make sure the device is enabled.
This series converts dpaa2 to fill in the supported_interfaces member
of phylink_config, cleans up the validate() implementation, and then
converts to phylink_generic_validate(). Previous behaviour should be
preserved.
====================
net: dpaa2-mac: remove interface checks in dpaa2_mac_validate()
As phylink checks the interface mode against the supported_interfaces
bitmap, we no longer need to validate the interface mode, nor handle
PHY_INTERFACE_MODE_NA in the validation function. Remove these to
simplify the implementation.
This series converts ag71xx to fill in the supported_interfaces member
of phylink_config, cleans up the validate() implementation, and then
converts to phylink_generic_validate().
The question over the port linkmode restriction has been answered by
Oleksij - there is no reason for this restriction, so we can go the
whole hog with this conversion. Thanks!
====================
ag71xx apparently only supports MII port type, which makes it different
from other implementations. However, Oleksij says there is no special
reason for this.
Convert the driver to use phylink_generic_validate(), which will allow
all ethtool port linkmodes instead of only MII, giving the driver
consistent behaviour with other drivers.
net: ag71xx: remove interface checks in ag71xx_mac_validate()
As phylink checks the interface mode against the supported_interfaces
bitmap, we no longer need to validate the interface mode, nor handle
PHY_INTERFACE_MODE_NA in the validation function. Remove these to
simplify the implementation.
Leon Romanovsky [Wed, 17 Nov 2021 14:49:09 +0000 (16:49 +0200)]
devlink: Don't throw an error if flash notification sent before devlink visible
The mlxsw driver calls to various devlink flash routines even before
users can get any access to the devlink instance itself. For example,
mlxsw_core_fw_rev_validate() one of such functions.
As reported by Guillaume in [1]:
Enabling LPAE always enables CONFIG_ARCH_DMA_ADDR_T_64BIT
in 32-bit systems, which breaks the bootup proceess when a
ethernet driver is using page pool with PP_FLAG_DMA_MAP flag.
As we were hoping we had no active consumers for such system
when we removed the dma mapping support, and LPAE seems like
a common feature for 32 bits system, so revert it.
Teng Qi [Wed, 17 Nov 2021 03:44:53 +0000 (11:44 +0800)]
ethernet: hisilicon: hns: hns_dsaf_misc: fix a possible array overflow in hns_dsaf_ge_srst_by_port()
The if statement:
if (port >= DSAF_GE_NUM)
return;
limits the value of port less than DSAF_GE_NUM (i.e., 8).
However, if the value of port is 6 or 7, an array overflow could occur:
port_rst_off = dsaf_dev->mac_cb[port]->port_rst_off;
because the length of dsaf_dev->mac_cb is DSAF_MAX_PORT_NUM (i.e., 6).
To fix this possible array overflow, we first check port and if it is
greater than or equal to DSAF_MAX_PORT_NUM, the function returns.
Helge Deller [Tue, 16 Nov 2021 12:12:21 +0000 (13:12 +0100)]
parisc: Wrap assembler related defines inside __ASSEMBLY__
Building allmodconfig shows errors in the gpu/drm/msm snapdragon drivers,
because a COND() define is used there which conflicts with the COND() for
PA-RISC assembly. Although the snapdragon driver isn't relevant for parisc, it
is nevertheless compiled when CONFIG_COMPILE_TEST is defined.
Move the COND() define and other PA-RISC mnemonics inside the #ifdef
__ASSEMBLY__ part to avoid this conflict.
Helge Deller [Mon, 15 Nov 2021 16:34:50 +0000 (17:34 +0100)]
parisc: Include stringify.h to avoid build error in crypto/api.c
Include stringify.h to avoid this build error:
arch/parisc/include/asm/jump_label.h: error: expected ':' before '__stringify'
arch/parisc/include/asm/jump_label.h: error: label 'l_yes' defined but not used [-Werror=unused-label]
Vitaly Kuznetsov [Tue, 16 Nov 2021 16:34:42 +0000 (17:34 +0100)]
KVM: s390: Cap KVM_CAP_NR_VCPUS by num_online_cpus()
KVM_CAP_NR_VCPUS is a legacy advisory value which on other architectures
return num_online_cpus() caped by KVM_CAP_NR_VCPUS or something else
(ppc and arm64 are special cases). On s390, KVM_CAP_NR_VCPUS returns
the same as KVM_CAP_MAX_VCPUS and this may turn out to be a bad
'advice'. Switch s390 to returning caped num_online_cpus() too.
Vitaly Kuznetsov [Tue, 16 Nov 2021 16:34:38 +0000 (17:34 +0100)]
KVM: arm64: Cap KVM_CAP_NR_VCPUS by kvm_arm_default_max_vcpus()
Generally, it doesn't make sense to return the recommended maximum number
of vCPUs which exceeds the maximum possible number of vCPUs.
Note: ARM64 is special as the value returned by KVM_CAP_MAX_VCPUS differs
depending on whether it is a system-wide ioctl or a per-VM one. Previously,
KVM_CAP_NR_VCPUS didn't have this difference and it seems preferable to
keep the status quo. Cap KVM_CAP_NR_VCPUS by kvm_arm_default_max_vcpus()
which is what gets returned by system-wide KVM_CAP_MAX_VCPUS.
Tom Lendacky [Mon, 24 May 2021 17:48:57 +0000 (12:48 -0500)]
KVM: x86: Assume a 64-bit hypercall for guests with protected state
When processing a hypercall for a guest with protected state, currently
SEV-ES guests, the guest CS segment register can't be checked to
determine if the guest is in 64-bit mode. For an SEV-ES guest, it is
expected that communication between the guest and the hypervisor is
performed to shared memory using the GHCB. In order to use the GHCB, the
guest must have been in long mode, otherwise writes by the guest to the
GHCB would be encrypted and not be able to be comprehended by the
hypervisor.
Create a new helper function, is_64_bit_hypercall(), that assumes the
guest is in 64-bit mode when the guest has protected state, and returns
true, otherwise invoking is_64_bit_mode() to determine the mode. Update
the hypercall related routines to use is_64_bit_hypercall() instead of
is_64_bit_mode().
Add a WARN_ON_ONCE() to is_64_bit_mode() to catch occurences of calls to
this helper function for a guest running with protected state.
Randy Dunlap [Sun, 7 Nov 2021 03:47:06 +0000 (20:47 -0700)]
riscv: kvm: fix non-kernel-doc comment block
Don't use "/**" to begin a comment block for a non-kernel-doc comment.
Prevents this docs build warning:
vcpu_sbi.c:3: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
* Copyright (c) 2019 Western Digital Corporation or its affiliates.
KVM: SEV: Fix typo in and tweak name of cmd_allowed_from_miror()
Rename cmd_allowed_from_miror() to is_cmd_allowed_from_mirror(), fixing
a typo and making it obvious that the result is a boolean where
false means "not allowed".
KVM: SEV: Drop a redundant setting of sev->asid during initialization
Remove a fully redundant write to sev->asid during SEV/SEV-ES guest
initialization. The ASID is set a few lines earlier prior to the call to
sev_platform_init(), which doesn't take "sev" as a param, i.e. can't
muck with the ASID barring some truly magical behind-the-scenes code.
KVM: SEV: WARN if SEV-ES is marked active but SEV is not
WARN if the VM is tagged as SEV-ES but not SEV. KVM relies on SEV and
SEV-ES being set atomically, and guards common flows with "is SEV", i.e.
observing SEV-ES without SEV means KVM has a fatal bug.
KVM: SEV: Set sev_info.active after initial checks in sev_guest_init()
Set sev_info.active during SEV/SEV-ES activation before calling any code
that can potentially consume sev_info.es_active, e.g. set "active" and
"es_active" as a pair immediately after the initial sanity checks. KVM
generally expects that es_active can be true if and only if active is
true, e.g. sev_asid_new() deliberately avoids sev_es_guest() so that it
doesn't get a false negative. This will allow WARNing in sev_es_guest()
if the VM is tagged as SEV-ES but not SEV.
KVM: SEV: Disallow COPY_ENC_CONTEXT_FROM if target has created vCPUs
Reject COPY_ENC_CONTEXT_FROM if the destination VM has created vCPUs.
KVM relies on SEV activation to occur before vCPUs are created, e.g. to
set VMCB flags and intercepts correctly.
David Woodhouse [Mon, 15 Nov 2021 16:50:27 +0000 (16:50 +0000)]
KVM: Kill kvm_map_gfn() / kvm_unmap_gfn() and gfn_to_pfn_cache
In commit 7e2175ebd695 ("KVM: x86: Fix recording of guest steal time /
preempted status") I removed the only user of these functions because
it was basically impossible to use them safely.
There are two stages to the GFN->PFN mapping; first through the KVM
memslots to a userspace HVA and then through the page tables to
translate that HVA to an underlying PFN. Invalidations of the former
were being handled correctly, but no attempt was made to use the MMU
notifiers to invalidate the cache when the HVA->GFN mapping changed.
As a prelude to reinventing the gfn_to_pfn_cache with more usable
semantics, rip it out entirely and untangle the implementation of
the unsafe kvm_vcpu_map()/kvm_vcpu_unmap() functions from it.
All current users of kvm_vcpu_map() also look broken right now, and
will be dealt with separately. They broadly fall into two classes:
* Those which map, access the data and immediately unmap. This is
mostly gratuitous and could just as well use the existing user
HVA, and could probably benefit from a gfn_to_hva_cache as they
do so.
* Those which keep the mapping around for a longer time, perhaps
even using the PFN directly from the guest. These will need to
be converted to the new gfn_to_pfn_cache and then kvm_vcpu_map()
can be removed too.
David Woodhouse [Mon, 15 Nov 2021 16:50:24 +0000 (16:50 +0000)]
KVM: nVMX: Use kvm_{read,write}_guest_cached() for shadow_vmcs12
Using kvm_vcpu_map() for reading from the guest is entirely gratuitous,
when all we do is a single memcpy and unmap it again. Fix it up to use
kvm_read_guest()... but in fact I couldn't bring myself to do that
without also making it use a gfn_to_hva_cache for both that *and* the
copy in the other direction.
David Woodhouse [Mon, 15 Nov 2021 16:50:21 +0000 (16:50 +0000)]
KVM: x86/xen: Fix get_attr of KVM_XEN_ATTR_TYPE_SHARED_INFO
In commit 319afe68567b ("KVM: xen: do not use struct gfn_to_hva_cache") we
stopped storing this in-kernel as a GPA, and started storing it as a GFN.
Which means we probably should have stopped calling gpa_to_gfn() on it
when userspace asks for it back.
Maxim Levitsky [Mon, 15 Nov 2021 13:18:37 +0000 (15:18 +0200)]
KVM: x86/mmu: include EFER.LMA in extended mmu role
Incorporate EFER.LMA into kvm_mmu_extended_role, as it used to compute the
guest root level and is not reflected in kvm_mmu_page_role.level when TDP
is in use. When simply running the guest, it is impossible for EFER.LMA
and kvm_mmu.root_level to get out of sync, as the guest cannot transition
from PAE paging to 64-bit paging without toggling CR0.PG, i.e. without
first bouncing through a different MMU context. And stuffing guest state
via KVM_SET_SREGS{,2} also ensures a full MMU context reset.
However, if KVM_SET_SREGS{,2} is followed by KVM_SET_NESTED_STATE, e.g. to
set guest state when migrating the VM while L2 is active, the vCPU state
will reflect L2, not L1. If L1 is using TDP for L2, then root_mmu will
have been configured using L2's state, despite not being used for L2. If
L2.EFER.LMA != L1.EFER.LMA, and L2 is using PAE paging, then root_mmu will
be configured for guest PAE paging, but will match the mmu_role for 64-bit
paging and cause KVM to not reconfigure root_mmu on the next nested VM-Exit.
Alternatively, the root_mmu's role could be invalidated after a successful
KVM_SET_NESTED_STATE that yields vcpu->arch.mmu != vcpu->arch.root_mmu,
i.e. that switches the active mmu to guest_mmu, but doing so is unnecessarily
tricky, and not even needed if L1 and L2 do have the same role (e.g., they
are both 64-bit guests and run with the same CR4).
Maxim Levitsky [Mon, 15 Nov 2021 13:18:36 +0000 (15:18 +0200)]
KVM: nVMX: don't use vcpu->arch.efer when checking host state on nested state load
When loading nested state, don't use check vcpu->arch.efer to get the
L1 host's 64-bit vs. 32-bit state and don't check it for consistency
with respect to VM_EXIT_HOST_ADDR_SPACE_SIZE, as register state in vCPU
may be stale when KVM_SET_NESTED_STATE is called---and architecturally
does not exist. When restoring L2 state in KVM, the CPU is placed in
non-root where nested VMX code has no snapshot of L1 host state: VMX
(conditionally) loads host state fields loaded on VM-exit, but they need
not correspond to the state before entry. A simple case occurs in KVM
itself, where the host RIP field points to vmx_vmexit rather than the
instruction following vmlaunch/vmresume.
However, for the particular case of L1 being in 32- or 64-bit mode
on entry, the exit controls can be treated instead as the source of
truth regarding the state of L1 on entry, and can be used to check
that vmcs12.VM_EXIT_HOST_ADDR_SPACE_SIZE matches vmcs12.HOST_EFER if
vmcs12.VM_EXIT_LOAD_IA32_EFER is set. The consistency check on CPU
EFER vs. vmcs12.VM_EXIT_HOST_ADDR_SPACE_SIZE, instead, happens only
on VM-Enter. That's because, again, there's conceptually no "current"
L1 EFER to check on KVM_SET_NESTED_STATE.
David Woodhouse [Sun, 14 Nov 2021 08:59:02 +0000 (08:59 +0000)]
KVM: Fix steal time asm constraints
In 64-bit mode, x86 instruction encoding allows us to use the low 8 bits
of any GPR as an 8-bit operand. In 32-bit mode, however, we can only use
the [abcd] registers. For which, GCC has the "q" constraint instead of
the less restrictive "r".
Also fix st->preempted, which is an input/output operand rather than an
input.
Dan Carpenter [Wed, 17 Nov 2021 07:34:54 +0000 (10:34 +0300)]
octeontx2-af: debugfs: don't corrupt user memory
The user supplies the "count" value to say how big its read buffer is.
The rvu_dbg_lmtst_map_table_display() function does not take the "count"
into account but instead just copies the whole table, potentially
corrupting the user's data.
Introduce the "ret" variable to store how many bytes we can copy. Also
I changed the type of "off" to size_t to make using min() simpler.
Add support to inet v4 raw sockets for binding to nonlocal addresses
through the IP_FREEBIND and IP_TRANSPARENT socket options, as well as
the ipv4.ip_nonlocal_bind kernel parameter.
Add helper function to inet_sock.h to check for bind address validity on
the base of the address type and whether nonlocal address are enabled
for the socket via any of the sockopts/sysctl, deduplicating checks in
ipv4/ping.c, ipv4/af_inet.c, ipv6/af_inet6.c (for mapped v4->v6
addresses), and ipv4/raw.c.
Add test cases with IP[V6]_FREEBIND verifying that both v4 and v6 raw
sockets support binding to nonlocal addresses after the change. Add
necessary support for the test cases to nettest.
For the above two UAF, the root cause is that the nfc_dev_up can race
between the nci_unregister_device routine. Therefore, this patch
introduce NCI_UNREG flag to easily eliminate the possible race. In
addition, the mutex_lock in nci_close_device can act as a barrier.
The root cause for this race is concluded below:
1. The rfkill_blocked (USE) in nfc_dev_up is supposed to be placed after
the device_is_registered check.
2. Since the netlink operations are possible just after the device_add
in nfc_register_device, the nfc_dev_up() can happen anywhere during the
rfkill creation process, which leads to data race.
This patch reorder these actions to permit
1. Once device_del is finished, the nfc_dev_up cannot dereference the
rfkill object.
2. The rfkill_register need to be placed after the device_add of nfc_dev
because the parent device need to be created first. So this patch keeps
the order but inject device_lock to prevent the data race.
Lin Ma [Mon, 15 Nov 2021 14:56:00 +0000 (22:56 +0800)]
NFC: reorganize the functions in nci_request
There is a possible data race as shown below:
thread-A in nci_request() | thread-B in nci_close_device()
| mutex_lock(&ndev->req_lock);
test_bit(NCI_UP, &ndev->flags); |
... | test_and_clear_bit(NCI_UP, &ndev->flags)
mutex_lock(&ndev->req_lock); |
|
This race will allow __nci_request() to be awaked while the device is
getting removed.
Similar to commit e2cb6b891ad2 ("bluetooth: eliminate the potential race
condition when removing the HCI controller"). this patch alters the
function sequence in nci_request() to prevent the data races between the
nci_close_device().
Tadeusz Struk [Mon, 15 Nov 2021 16:01:43 +0000 (08:01 -0800)]
tipc: check for null after calling kmemdup
kmemdup can return a null pointer so need to check for it, otherwise
the null key will be dereferenced later in tipc_crypto_key_xmit as
can be seen in the trace [1].
Fix misleading display error in dmesg if tc filter return fail.
Only i40e status error code should be converted to string, not linux
error code. Otherwise, we return false information about the error.
i40e: Fix creation of first queue by omitting it if is not power of two
Reject TCs creation with proper message if the first queue
assignment is not equal to the power of two.
The first queue number was checked too late in the second queue
iteration, if second queue was configured at all. Now if first queue value
is not a power of two, then trying to create qdisc will be rejected.
Fixes: 8f88b3034db3 ("i40e: Add infrastructure for queue channel support") Signed-off-by: Grzegorz Szczurek <[email protected]> Signed-off-by: Jedrzej Jagielski <[email protected]> Tested-by: Tony Brelinski <[email protected]> Signed-off-by: Tony Nguyen <[email protected]>
i40e: Fix warning message and call stack during rmmod i40e driver
Restore part of reset functionality used when reset is called
from the VF to reset itself. Without this fix warning message
is displayed when VF is being removed via sysfs.
Fix the crash of the VF during reset by ensuring
that the PF receives the reset message successfully.
Refactor code to use one function instead of two.
Linus Torvalds [Wed, 17 Nov 2021 23:55:07 +0000 (15:55 -0800)]
Merge tag 'gfs2-v5.16-rc2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2
Pull gfs2 fixes from Andreas Gruenbacher:
- The current iomap_file_buffered_write behavior of failing the entire
write when part of the user buffer cannot be faulted in leads to an
endless loop in gfs2. Work around that in gfs2 for now.
- Various other bugs all over the place.
* tag 'gfs2-v5.16-rc2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2:
gfs2: Prevent endless loops in gfs2_file_buffered_write
gfs2: Fix "Introduce flag for glock holder auto-demotion"
gfs2: Fix length of holes reported at end-of-file
gfs2: release iopen glock early in evict
gfs2: Fix atomic bug in gfs2_instantiate
gfs2: Only dereference i->iov when iter_is_iovec(i)
Linus Torvalds [Wed, 17 Nov 2021 23:12:50 +0000 (15:12 -0800)]
Merge tag 'mips-fixes_5.16_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux
Pull MIPS fixes from Thomas Bogendoerfer:
- wire futex_waitv syscall
- build fixes for lantiq and bcm63xx configs
- yamon-dt bugfix
* tag 'mips-fixes_5.16_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
mips: lantiq: add support for clk_get_parent()
mips: bcm63xx: add support for clk_get_parent()
MIPS: generic/yamon-dt: fix uninitialized variable error
MIPS: syscalls: Wire up futex_waitv syscall
Linus Torvalds [Wed, 17 Nov 2021 16:46:15 +0000 (08:46 -0800)]
Merge tag 'hyperv-fixes-signed-20211117' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux
Pull hyperv fixes from Wei Liu:
- Fix ring size calculation for balloon driver (Boqun Feng)
- Fix issues in Hyper-V setup code (Sean Christopherson)
* tag 'hyperv-fixes-signed-20211117' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux:
x86/hyperv: Move required MSRs check to initial platform probing
x86/hyperv: Fix NULL deref in set_hv_tscchange_cb() if Hyper-V setup fails
Drivers: hv: balloon: Use VMBUS_RING_SIZE() wrapper for dm_ring_size
Radoslaw Tyl [Wed, 30 Jun 2021 08:15:31 +0000 (10:15 +0200)]
ixgbevf: Mailbox improvements
Improve reliability of the mailbox communication and remove
its potential flaws that may lead to the undefined or faulty behavior.
Recently some users reported issues on ESX with 10G Intel NICs which were
found to be caused by incorrect implementation of the PF-VF mailbox
communication.
Technical investigation highlighted areas to improve in the communication
between PF or VF that wants to send the message (sender) and the other
part which receives the message (receiver):
- Locking the mailbox when the sender wants to send a message
- Releasing the mailbox when the communication ends
- Returning the result of the mailbox message execution
Radoslaw Tyl [Wed, 30 Jun 2021 08:15:30 +0000 (10:15 +0200)]
ixgbevf: Add legacy suffix to old API mailbox functions
Add legacy suffix to mailbox functions which should be backwards compatible
with older PF drivers. Communication during API negotiation always has to
be done using the earlier implementation.
Radoslaw Tyl [Wed, 30 Jun 2021 08:15:29 +0000 (10:15 +0200)]
ixgbevf: Improve error handling in mailbox
Add new handling for error codes:
IXGBE_ERR_CONFIG - ixgbe_mbx_operations is not correctly set
IXGBE_ERR_TIMEOUT - mailbox operation, e.g. poll for message, timeout
Radoslaw Tyl [Wed, 30 Jun 2021 08:15:28 +0000 (10:15 +0200)]
ixgbevf: Rename MSGTYPE to SUCCESS and FAILURE
There is name similarity within IXGBE_VT_MSGTYPE_ACK and
PFMAILBOX.ACK / VFMAILBOX.ACK. MSGTYPE macros are renamed to SUCCESS and
FAILURE because they are not specified in datasheet and now will be
easily distinguishable.
i40e: Fix ping is lost after configuring ADq on VF
Properly reconfigure VF VSIs after VF request ADQ.
Created new function to update queue mapping and queue pairs per TC
with AQ update VSI. This sets proper RSS size on NIC.
VFs num_queue_pairs should not be changed during setup of queue maps.
Previously, VF main VSI in ADQ had configured too many queues and had
wrong RSS size, which lead to packets not being consumed and drops in
connectivity.
Fixes: bc6d33c8d93f ("i40e: Fix the number of queues available to be mapped for use") Co-developed-by: Przemyslaw Patynowski <[email protected]> Signed-off-by: Przemyslaw Patynowski <[email protected]> Signed-off-by: Eryk Rybak <[email protected]> Tested-by: Tony Brelinski <[email protected]> Signed-off-by: Tony Nguyen <[email protected]>
i40e: Fix changing previously set num_queue_pairs for PFs
Currently, the i40e_vsi_setup_queue_map is basing the count of queues in
TCs on a VSI's alloc_queue_pairs member which is not changed throughout
any user's action (for example via ethtool's set_channels callback).
This implies that vsi->tc_config.tc_info[n].qcount value that is given
to the kernel via netdev_set_tc_queue() that notifies about the count of
queues per particular traffic class is constant even if user has changed
the total count of queues.
This in turn caused the kernel warning after setting the queue count to
the lower value than the initial one:
[dmesg]
Number of in use tx queues changed invalidating tc mappings. Priority
traffic classification disabled!
Reason was that vsi->alloc_queue_pairs stayed at 64 value which was used
to set the qcount on TC0 (by default only TC0 exists so all of the
existing queues are assigned to TC0). we update the offset/qcount via
netdev_set_tc_queue() back to the old value but then the
netif_set_real_num_tx_queues() is using the vsi->num_queue_pairs as a
value which got set to 40.
Fix it by using vsi->req_queue_pairs as a queue count that will be
distributed across TCs. Do it only for non-zero values, which implies
that user actually requested the new count of queues.
For VSIs other than main, stay with the vsi->alloc_queue_pairs as we
only allow manipulating the queue count on main VSI.
Remove the reason of null pointer dereference in sync VSI filters.
Added new I40E_VSI_RELEASING flag to signalize deleting and releasing
of VSI resources to sync this thread with sync filters subtask.
Without this patch it is possible to start update the VSI filter list
after VSI is removed, that's causing a kernel oops.
Eryk Rybak [Thu, 21 Jan 2021 16:17:22 +0000 (16:17 +0000)]
i40e: Fix correct max_pkt_size on VF RX queue
Setting VLAN port increasing RX queue max_pkt_size
by 4 bytes to take VLAN tag into account.
Trigger the VF reset when setting port VLAN for
VF to renegotiate its capabilities and reinitialize.
David S. Miller [Wed, 17 Nov 2021 14:56:16 +0000 (14:56 +0000)]
Merge branch 'dev_watchdog-less-intrusive'
Eric Dumazet says:
====================
net: make dev_watchdog() less intrusive
dev_watchdog() is used on many NIC to periodically monitor TX queues
to detect hangs.
Problem is : It stops all queues, then check them, then 'unfreeze' them.
Not only this stops feeding the NIC, it also migrates all qdiscs
to be serviced on the cpu calling netif_tx_unlock(), causing
a potential latency artifact.
With many TX queues, this is becoming more visible.
====================
Eric Dumazet [Wed, 17 Nov 2021 03:29:24 +0000 (19:29 -0800)]
net: no longer stop all TX queues in dev_watchdog()
There is no reason for stopping all TX queues from dev_watchdog()
Not only this stops feeding the NIC, it also migrates all qdiscs
to be serviced on the cpu calling netif_tx_unlock(), causing
a potential latency artifact.
Jonathan Davies [Tue, 16 Nov 2021 17:42:42 +0000 (17:42 +0000)]
net: virtio_net_hdr_to_skb: count transport header in UFO
virtio_net_hdr_to_skb does not set the skb's gso_size and gso_type
correctly for UFO packets received via virtio-net that are a little over
the GSO size. This can lead to problems elsewhere in the networking
stack, e.g. ovs_vport_send dropping over-sized packets if gso_size is
not set.
This is due to the comparison
if (skb->len - p_off > gso_size)
not properly accounting for the transport layer header.
p_off includes the size of the transport layer header (thlen), so
skb->len - p_off is the size of the TCP/UDP payload.
gso_size is read from the virtio-net header. For UFO, fragmentation
happens at the IP level so does not need to include the UDP header.
Hence the calculation could be comparing a TCP/UDP payload length with
an IP payload length, causing legitimate virtio-net packets to have
lack gso_type/gso_size information.
Example: a UDP packet with payload size 1473 has IP payload size 1481.
If the guest used UFO, it is not fragmented and the virtio-net header's
flags indicate that it is a GSO frame (VIRTIO_NET_HDR_GSO_UDP), with
gso_size = 1480 for an MTU of 1500. skb->len will be 1515 and p_off
will be 42, so skb->len - p_off = 1473. Hence the comparison fails, and
shinfo->gso_size and gso_type are not set as they should be.
Instead, add the UDP header length before comparing to gso_size when
using UFO. In this way, it is the size of the IP payload that is
compared to gso_size.
Fixes: 6dd912f82680 ("net: check untrusted gso_size at kernel entry") Signed-off-by: Jonathan Davies <[email protected]> Reviewed-by: Willem de Bruijn <[email protected]> Signed-off-by: David S. Miller <[email protected]>
Pavel Skripkin [Tue, 16 Nov 2021 15:17:12 +0000 (18:17 +0300)]
net: dpaa2-eth: fix use-after-free in dpaa2_eth_remove
Access to netdev after free_netdev() will cause use-after-free bug.
Move debug log before free_netdev() call to avoid it.
Fixes: 7472dd9f6499 ("staging: fsl-dpaa2/eth: Move print message") Signed-off-by: Pavel Skripkin <[email protected]> Signed-off-by: David S. Miller <[email protected]>
Aaron Ma [Tue, 16 Nov 2021 14:19:17 +0000 (22:19 +0800)]
net: usb: r8152: Add MAC passthrough support for more Lenovo Docks
Like ThinkaPad Thunderbolt 4 Dock, more Lenovo docks start to use the original
Realtek USB ethernet chip ID 0bda:8153.
Lenovo Docks always use their own IDs for usb hub, even for older Docks.
If parent hub is from Lenovo, then r8152 should try MAC passthrough.
Verified on Lenovo TBT3 dock too.
Kurt Kanzenbach [Tue, 16 Nov 2021 08:03:25 +0000 (09:03 +0100)]
net: ethernet: ti: cpsw: Enable PHY timestamping
If the used PHYs also support hardware timestamping, all configuration requests
should be forwared to the PHYs instead of being processed by the MAC driver
itself.
This enables PHY timestamping in combination with the cpsw driver.
Tested with an am335x based board with two DP83640 PHYs connected to the cpsw
switch.
The cross-reference for the handbooks section works. However, it is
meant to describe the path inside the Kernel's doc where the section
is, but there's an space instead of a dash, plus it lacks the .rst at
the end, which makes:
This series converts ocelot_net to fill in the supported_interfaces
member of phylink_config, cleans up the validate() implementation,
and then converts to phylink_generic_validate().
====================
net: ocelot_net: remove interface checks in macb_validate()
As phylink checks the interface mode against the supported_interfaces
bitmap, we no longer need to validate the interface mode in the
validation function. Remove this to simplify it.
This series converts mtk_eth_soc to fill in the supported_interfaces
member of phylink_config, cleans up the validate() implementation, and
then converts to phylink_generic_validate().
====================
net: mtk_eth_soc: drop use of phylink_helper_basex_speed()
Now that we have a better method to select SFP interface modes, we
no longer need to use phylink_helper_basex_speed() in a driver's
validation function, and we can also get rid of our hack to indicate
both 1000base-X and 2500base-X if the comphy is present to make that
work. Remove this hack and use of phylink_helper_basex_speed().
net: mtk_eth_soc: remove interface checks in mtk_validate()
As phylink checks the interface mode against the supported_interfaces
bitmap, we no longer need to validate the interface mode, nor handle
PHY_INTERFACE_MODE_NA in the validation function. Remove these to
simplify the implementation.
This series converts sparx5 to fill in the supported_interfaces member
of phylink_config, cleans up the validate() implementation, and then
converts to phylink_generic_validate().
====================
sparx5_phylink_validate() no longer needs to check for
PHY_INTERFACE_MODE_NA as phylink will walk the supported interface
types to discover the link mode capabilities. Neither is it necessary
to check the device capabilities as we will not be called for
unsupported interface modes. Remove these checks.
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