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dev_addr is initialized byte by byte from series.
Fixes build on x86 (32bit).
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
IO reads, so save to an array then eth_hw_addr_set().
Fixes build on x86 (32bit).
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
IO reads, so save to an array then eth_hw_addr_set().
Fixes build on x86 (32bit).
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jakub Kicinski says:
====================
net: constify netdev->dev_addr - x86 changes
Resending these so they can get merged while I battle random cross builds.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Add const to the address param of ipw_send_adapter_address()
all the functions down the chain have already been changed.
Not sure how I lost this in the rebase.
Acked-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Stanislav Yakovlev <stas.yakovlev@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
wilc_set_mac_address() calls IO routines which don't guarantee
the pointer won't be written to. Make a copy.
Acked-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Argument comes from netdev->dev_addr directly, it needs a const.
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
The future is here, convert the new driver as we are about
to make netdev->dev_addr const.
Acked-by: Lukasz Stelmach <l.stelmach@samsung.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Some hardware can do this so let's use that capability.
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Merge tag 'regmap-no-bus-update-bits' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap
Mark Brown says:
===================
regmap: Allow regmap_update_bits() to be offloaded with no bus
Some hardware can do this so let's use that capability.
===================
Link: https://lore.kernel.org/all/YZWDOidBOssP10yS@sirena.org.uk/
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Current release - regressions:
- devlink: don't throw an error if flash notification sent before
devlink visible
- page_pool: Revert "page_pool: disable dma mapping support...",
turns out there are active arches who need it
Current release - new code bugs:
- amt: cancel delayed_work synchronously in amt_fini()
Previous releases - regressions:
- xsk: fix crash on double free in buffer pool
- bpf: fix inner map state pruning regression causing program
rejections
- mac80211: drop check for DONT_REORDER in __ieee80211_select_queue,
preventing mis-selecting the best effort queue
- mac80211: do not access the IV when it was stripped
- mac80211: fix radiotap header generation, off-by-one
- nl80211: fix getting radio statistics in survey dump
- e100: fix device suspend/resume
Previous releases - always broken:
- tcp: fix uninitialized access in skb frags array for Rx 0cp
- bpf: fix toctou on read-only map's constant scalar tracking
- bpf: forbid bpf_ktime_get_coarse_ns and bpf_timer_* in tracing progs
- tipc: only accept encrypted MSG_CRYPTO msgs
- smc: transfer remaining wait queue entries during fallback,
fix missing wake ups
- udp: validate checksum in udp_read_sock() (when sockmap is used)
- sched: act_mirred: drop dst for the direction from egress to ingress
- virtio_net_hdr_to_skb: count transport header in UFO, prevent
allowing bad skbs into the stack
- nfc: reorder the logic in nfc_{un,}register_device, fix unregister
- ipsec: check return value of ipv6_skip_exthdr
- usb: r8152: add MAC passthrough support for more Lenovo Docks
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-5.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Including fixes from bpf, mac80211.
Current release - regressions:
- devlink: don't throw an error if flash notification sent before
devlink visible
- page_pool: Revert "page_pool: disable dma mapping support...",
turns out there are active arches who need it
Current release - new code bugs:
- amt: cancel delayed_work synchronously in amt_fini()
Previous releases - regressions:
- xsk: fix crash on double free in buffer pool
- bpf: fix inner map state pruning regression causing program
rejections
- mac80211: drop check for DONT_REORDER in __ieee80211_select_queue,
preventing mis-selecting the best effort queue
- mac80211: do not access the IV when it was stripped
- mac80211: fix radiotap header generation, off-by-one
- nl80211: fix getting radio statistics in survey dump
- e100: fix device suspend/resume
Previous releases - always broken:
- tcp: fix uninitialized access in skb frags array for Rx 0cp
- bpf: fix toctou on read-only map's constant scalar tracking
- bpf: forbid bpf_ktime_get_coarse_ns and bpf_timer_* in tracing
progs
- tipc: only accept encrypted MSG_CRYPTO msgs
- smc: transfer remaining wait queue entries during fallback, fix
missing wake ups
- udp: validate checksum in udp_read_sock() (when sockmap is used)
- sched: act_mirred: drop dst for the direction from egress to
ingress
- virtio_net_hdr_to_skb: count transport header in UFO, prevent
allowing bad skbs into the stack
- nfc: reorder the logic in nfc_{un,}register_device, fix unregister
- ipsec: check return value of ipv6_skip_exthdr
- usb: r8152: add MAC passthrough support for more Lenovo Docks"
* tag 'net-5.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (96 commits)
ptp: ocp: Fix a couple NULL vs IS_ERR() checks
net: ethernet: dec: tulip: de4x5: fix possible array overflows in type3_infoblock()
net: tulip: de4x5: fix the problem that the array 'lp->phy[8]' may be out of bound
ipv6: check return value of ipv6_skip_exthdr
e100: fix device suspend/resume
devlink: Don't throw an error if flash notification sent before devlink visible
page_pool: Revert "page_pool: disable dma mapping support..."
ethernet: hisilicon: hns: hns_dsaf_misc: fix a possible array overflow in hns_dsaf_ge_srst_by_port()
octeontx2-af: debugfs: don't corrupt user memory
NFC: add NCI_UNREG flag to eliminate the race
NFC: reorder the logic in nfc_{un,}register_device
NFC: reorganize the functions in nci_request
tipc: check for null after calling kmemdup
i40e: Fix display error code in dmesg
i40e: Fix creation of first queue by omitting it if is not power of two
i40e: Fix warning message and call stack during rmmod i40e driver
i40e: Fix ping is lost after configuring ADq on VF
i40e: Fix changing previously set num_queue_pairs for PFs
i40e: Fix NULL ptr dereference on VSI filter sync
i40e: Fix correct max_pkt_size on VF RX queue
...
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Merge tag 'for-5.16-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
"Several xes and one old ioctl deprecation. Namely there's fix for
crashes/warnings with lzo compression that was suspected to be caused
by first pull merge resolution, but it was a different bug.
Summary:
- regression fix for a crash in lzo due to missing boundary checks of
the page array
- fix crashes on ARM64 due to missing barriers when synchronizing
status bits between work queues
- silence lockdep when reading chunk tree during mount
- fix false positive warning in integrity checker on devices with
disabled write caching
- fix signedness of bitfields in scrub
- start deprecation of balance v1 ioctl"
* tag 'for-5.16-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: deprecate BTRFS_IOC_BALANCE ioctl
btrfs: make 1-bit bit-fields of scrub_page unsigned int
btrfs: check-integrity: fix a warning on write caching disabled disk
btrfs: silence lockdep when reading chunk tree during mount
btrfs: fix memory ordering between normal and ordered work functions
btrfs: fix a out-of-bound access in copy_compressed_data_to_page()
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Merge tag 'fs_for_v5.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull UDF fix from Jan Kara:
"A fix for a long-standing UDF bug where we were not properly
validating directory position inside readdir"
* tag 'fs_for_v5.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
udf: Fix crash after seekdir
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Merge tag 'fs.idmapped.v5.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux
Pull setattr idmapping fix from Christian Brauner:
"This contains a simple fix for setattr. When determining the validity
of the attributes the ia_{g,u}id fields contain the value that will be
written to inode->i_{g,u}id. When the {g,u}id attribute of the file
isn't altered and the caller's fs{g,u}id matches the current {g,u}id
attribute the attribute change is allowed.
The value in ia_{g,u}id does already account for idmapped mounts and
will have taken the relevant idmapping into account. So in order to
verify that the {g,u}id attribute isn't changed we simple need to
compare the ia_{g,u}id value against the inode's i_{g,u}id value.
This only has any meaning for idmapped mounts as idmapping helpers are
idempotent without them. And for idmapped mounts this really only has
a meaning when circular idmappings are used, i.e. mappings where e.g.
id 1000 is mapped to id 1001 and id 1001 is mapped to id 1000. Such
ciruclar mappings can e.g. be useful when sharing the same home
directory between multiple users at the same time.
Before this patch we could end up denying legitimate attribute changes
and allowing invalid attribute changes when circular mappings are
used. To even get into this situation the caller must've been
privileged both to create that mapping and to create that idmapped
mount.
This hasn't been seen in the wild anywhere but came up when expanding
the fstest suite during work on a series of hardening patches. All
idmapped fstests pass without any regressions and we're adding new
tests to verify the behavior of circular mappings.
The new tests can be found at [1]"
Link: https://lore.kernel.org/linux-fsdevel/20211109145713.1868404-2-brauner@kernel.org [1]
* tag 'fs.idmapped.v5.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux:
fs: handle circular mappings correctly
Fix some warnings which showed up with allmodconfig builds, a revert of
a change to the sigreturn trampoline which broke signal handling, wire
up futex_waitv and add CONFIG_PRINTK_TIME=y to 32bit defconfig.
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Merge tag 'for-5.16/parisc-4' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc fixes from Helge Deller:
"parisc bug and warning fixes and wire up futex_waitv.
Fix some warnings which showed up with allmodconfig builds, a revert
of a change to the sigreturn trampoline which broke signal handling,
wire up futex_waitv and add CONFIG_PRINTK_TIME=y to 32bit defconfig"
* tag 'for-5.16/parisc-4' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Enable CONFIG_PRINTK_TIME=y in 32bit defconfig
Revert "parisc: Reduce sigreturn trampoline to 3 instructions"
parisc: Wrap assembler related defines inside __ASSEMBLY__
parisc: Wire up futex_waitv
parisc: Include stringify.h to avoid build error in crypto/api.c
parisc/sticon: fix reverse colors
* Cleanups for the perf test infrastructure and mapping hugepages
* Avoid contention on mmap_sem when the guests start to run
* Add event channel upcall support to xen_shinfo_test
x86 changes:
* Fixes for Xen emulation
* Kill kvm_map_gfn() / kvm_unmap_gfn() and broken gfn_to_pfn_cache
* Fixes for migration of 32-bit nested guests on 64-bit hypervisor
* Compilation fixes
* More SEV cleanups
Generic:
* Cap the return value of KVM_CAP_NR_VCPUS to both KVM_CAP_MAX_VCPUS
and num_online_cpus(). Most architectures were only using one of the two.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM fixes from Paolo Bonzini:
"Selftest changes:
- Cleanups for the perf test infrastructure and mapping hugepages
- Avoid contention on mmap_sem when the guests start to run
- Add event channel upcall support to xen_shinfo_test
x86 changes:
- Fixes for Xen emulation
- Kill kvm_map_gfn() / kvm_unmap_gfn() and broken gfn_to_pfn_cache
- Fixes for migration of 32-bit nested guests on 64-bit hypervisor
- Compilation fixes
- More SEV cleanups
Generic:
- Cap the return value of KVM_CAP_NR_VCPUS to both KVM_CAP_MAX_VCPUS
and num_online_cpus(). Most architectures were only using one of
the two"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (42 commits)
KVM: x86: Cap KVM_CAP_NR_VCPUS by KVM_CAP_MAX_VCPUS
KVM: s390: Cap KVM_CAP_NR_VCPUS by num_online_cpus()
KVM: RISC-V: Cap KVM_CAP_NR_VCPUS by KVM_CAP_MAX_VCPUS
KVM: PPC: Cap KVM_CAP_NR_VCPUS by KVM_CAP_MAX_VCPUS
KVM: MIPS: Cap KVM_CAP_NR_VCPUS by KVM_CAP_MAX_VCPUS
KVM: arm64: Cap KVM_CAP_NR_VCPUS by kvm_arm_default_max_vcpus()
KVM: x86: Assume a 64-bit hypercall for guests with protected state
selftests: KVM: Add /x86_64/sev_migrate_tests to .gitignore
riscv: kvm: fix non-kernel-doc comment block
KVM: SEV: Fix typo in and tweak name of cmd_allowed_from_miror()
KVM: SEV: Drop a redundant setting of sev->asid during initialization
KVM: SEV: WARN if SEV-ES is marked active but SEV is not
KVM: SEV: Set sev_info.active after initial checks in sev_guest_init()
KVM: SEV: Disallow COPY_ENC_CONTEXT_FROM if target has created vCPUs
KVM: Kill kvm_map_gfn() / kvm_unmap_gfn() and gfn_to_pfn_cache
KVM: nVMX: Use a gfn_to_hva_cache for vmptrld
KVM: nVMX: Use kvm_read_guest_offset_cached() for nested VMCS check
KVM: x86/xen: Use sizeof_field() instead of open-coding it
KVM: nVMX: Use kvm_{read,write}_guest_cached() for shadow_vmcs12
KVM: x86/xen: Fix get_attr of KVM_XEN_ATTR_TYPE_SHARED_INFO
...
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Merge tag 'docs-5.16-2' of git://git.lwn.net/linux
Pull documentation fixes from Jonathan Corbet:
"A handful of documentation fixes for 5.16"
* tag 'docs-5.16-2' of git://git.lwn.net/linux:
Documentation/process: fix a cross reference
Documentation: update vcpu-requests.rst reference
docs: accounting: update delay-accounting.rst reference
libbpf: update index.rst reference
docs: filesystems: Fix grammatical error "with" to "which"
doc/zh_CN: fix a translation error in management-style
docs: ftrace: fix the wrong path of tracefs
Documentation: arm: marvell: Fix link to armada_1000_pb.pdf document
Documentation: arm: marvell: Put Armada XP section between Armada 370 and 375
Documentation: arm: marvell: Add some links to homepage / product infos
docs: Update Sphinx requirements
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Merge tag 'printk-for-5.16-fixup' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux
Pull printk fixes from Petr Mladek:
- Try to flush backtraces from other CPUs also on the local one. This
was a regression caused by printk_safe buffers removal.
- Remove header dependency warning.
* tag 'printk-for-5.16-fixup' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux:
printk: Remove printk.h inclusion in percpu.h
printk: restore flushing of NMI buffers on remote CPUs after NMI backtraces
The ptp_ocp_get_mem() function does not return NULL, it returns error
pointers.
Fixes: 773bda9649 ("ptp: ocp: Expose various resources on the timecard.")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
John Efstathiades says:
===================
lan78xx NAPI Performance Improvements
This patch set introduces a set of changes to the lan78xx driver
that were originally developed as part of an investigation into
the performance of TCP and UDP transfers on an Android system.
The changes increase the throughput of both UDP and TCP transfers
and reduce the overall CPU load.
These improvements are also seen on a standard Linux kernel. Typical
results are included at the end of this document.
The changes to the driver evolved over time. The patches presented
here attempt to organise the changes in to coherent blocks that
affect logically connected parts of the driver. The patches do not
reflect the way in which the code evolved during the performance
investigation.
Each patch produces a working driver that has an incremental
improvement but patches 2, 3 and 6 should be considered a single
update.
The changes affect the following parts of the driver:
1. Deferred URB processing
The deferred URB processing that was originally done by a tasklet
is now done by a NAPI polling routine. The NAPI cycle has a fixed
work budget that controls how many received frames are passed to
the network stack.
Patch 6 introduces the NAPI polling but depends on preceding patches.
The new NAPI polling routine is also responsible for submitting
Rx and Tx URBs to the USB host controller.
Moving the URB processing to a NAPI-based system "smoothed"
incoming and outgoing data flows on the Android system under
investigation. However, taken in isolation, moving from a tasklet
approach to a NAPI approach made little or no difference to the
overall performance.
2. URB buffer management
The driver creates a pool of Tx and a pool of Rx URB buffers. Each
buffer is large enough to accommodate a packet with the maximum MTU
data. URBs are allocated from these pools as required.
Patch 2 introduces the new Tx buffer pool.
Patch 3 introduces the new Rx buffer pool.
3. Tx pending data
SKBs containing data to be transmitted are added to a queue. The
driver tracks free Tx URBs and the corresponding free Tx URB space.
When new Tx URBs are submitted, pending data is copied into the
URB buffer until the URB buffer is filled or there is no more
pending data. This maximises utilisation the LAN78xx internal
USB and network frame buffers.
New Tx URBs are submitted to the USB host controller as part of the
NAPI polling cycle.
Patch 2 introduces these changes.
4. Rx URB completion
A new URB is no longer submitted as part of the URB completion
callback.
New URBs are submitted during the NAPI polling cycle.
Patch 3 introduces these changes.
5. Rx URB processing
Completed URBs are put on to queue for processing (as is done in the
current driver). Network packets in completed URBs are copied from
the URB buffer in to dynamically allocated SKBs and passed to
the network stack.
The emptied URBs are resubmitted to the USB host controller.
Patch 3 introduces this change. Patch 6 updates the change to use
NAPI SKBs.
Each packet passed to the network stack is a single NAPI work item.
If the NAPI work budget is exhausted the remaining packets in the
URB are put onto an overflow queue that is processed at the start
of the next NAPI cycle.
Patch 6 introduces this change.
6. Driver-specific hard_header_len
The driver-specific hard_header_len adjustment was removed as it
broke generic receive offload (GRO) processing. Moreover, it was no
longer required due the change in Tx pending data management (see
point 3. above).
Patch 5 introduces this change.
The modification has been tested on four different target machines:
Target | CPU | ARCH | cores | kernel | RAM |
-----------------+------------+---------+-------+--------+-------|
Raspberry Pi 4B | Cortex-A72 | aarch64 | 4 | 64-bit | 2 GB |
Nitrogen8M SBC | Cortex-A53 | aarch64 | 4 | 64-bit | 2 GB |
Compaq Pressario | Pentium D | i686 | 2 | 32-bit | 4 GB |
Dell T3620 | Core i3 | x86_64 | 2+2 | 64-bit | 16 GB |
The targets, apart from the Compaq, each have an on-chip USB3 host
controller. A PCIe-based USB3 host controller card was added to the
Compaq to provide the necessary USB3 host interface.
The network throughput was measured using iperf3. The peer device was
a second Dell T3620 fitted with an Intel i210 network interface. The
target machine and the peer device were connected via a Netgear GS105
gigabit switch.
The CPU load was measured using mpstat running on the target machine.
The tables below summarise the throughput and CPU load improvements
achieved by the updated driver.
The bandwidth is the average bandwidth reported by iperf3 at the end
of a 60-second test.
The percentage idle figure is the average idle reported across all
CPU cores on the target machine for the duration of the test.
TCP Rx (target receiving, peer transmitting)
| Standard Driver | NAPI Driver |
Target | Bandwidth | % Idle | Bandwidth | % Idle |
-----------------+-----------+--------+--------------------|
RPi4 Model B | 941 | 74.9 | 941 | 91.5 |
Nitrogen8M | 941 | 76.2 | 941 | 92.7 |
Compaq Pressario | 941 | 44.5 | 941 | 82.1 |
Dell T3620 | 941 | 88.9 | 941 | 98.3 |
TCP Tx (target transmitting, peer receiving)
| Standard Driver | NAPI Driver |
Target | Bandwidth | % Idle | Bandwidth | % Idle |
-----------------+-----------+--------+--------------------|
RPi4 Model B | 683 | 80.1 | 942 | 97.6 |
Nitrogen8M | 942 | 97.8 | 942 | 97.3 |
Compaq Pressario | 939 | 80.0 | 942 | 91.2 |
Dell T3620 | 942 | 95.3 | 942 | 97.6 |
UDP Rx (target receiving, peer transmitting)
| Standard Driver | NAPI Driver |
Target | Bandwidth | % Idle | Bandwidth | % Idle |
-----------------+-----------+--------+--------------------|
RPi4 Model B | - | - | 958 (0%) | 76.2 |
Nitrogen8M | 690 (25%) | 57.7 | 937 (0%) | 68.5 |
Compaq Pressario | 958 (0%) | 50.2 | 958 (0%) | 61.6 |
Dell T3620 | 958 (0%) | 89.6 | 958 (0%) | 85.3 |
The figure in brackets is the percentage packet loss.
UDP Tx (target transmitting, peer receiving)
| Standard Driver | NAPI Driver |
Target | Bandwidth | % Idle | Bandwidth | % Idle |
-----------------+-----------+--------+--------------------|
RPi4 Model B | 370 | 75.0 | 886 | 78.9 |
Nitrogen8M | 710 | 75.0 | 958 | 85.3 |
Compaq Pressario | 958 | 65.5 | 958 | 76.6 |
Dell T3620 | 958 | 97.0 | 958 | 97.3 |
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch introduces a NAPI-style approach for processing completed
Rx URBs that contributes to improving driver throughput and reducing
CPU load.
Packets in completed URBs are copied to NAPI SKBs and passed to the
network stack for processing. Each frame passed to the stack is one
work item in the NAPI budget.
If the NAPI budget is consumed and frames remain, they are added to
an overflow queue that is processed at the start of the next NAPI
polling cycle.
The NAPI handler is also responsible for copying pending Tx data to
Tx URBs and submitting them to the USB host controller for
transmission.
Signed-off-by: John Efstathiades <john.efstathiades@pebblebay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Remove hardware-specific header length adjustment as it is no longer
required. It also breaks generic receive offload (GRO) processing of
received TCP frames that results in a TCP ACK being sent for each
received frame.
Signed-off-by: John Efstathiades <john.efstathiades@pebblebay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Move position of rx_submit() to remove forward declaration of
rx_complete() which is now no longer required.
Signed-off-by: John Efstathiades <john.efstathiades@pebblebay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch introduces a new approach to allocating and managing
Rx URBs that contributes to improving driver throughput and reducing
CPU load.
A pool of Rx URBs is created during driver instantiation. All the
URBs are initially submitted to the USB host controller for
processing.
The default URB buffer size is different for each USB bus speed.
The chosen sizes provide good USB utilisation with little impact on
overall packet latency.
Completed URBs are processed in the driver bottom half. The URB
buffer contents are copied to a dynamically allocated SKB, which is
then passed to the network stack. The URB is then re-submitted to
the USB host controller.
NOTE: the call to skb_copy() in rx_process() that copies the URB
contents to a new SKB is a temporary change to make this patch work
in its own right. This call will be removed when the NAPI processing
is introduced by patch 6 in this patch set.
Signed-off-by: John Efstathiades <john.efstathiades@pebblebay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch introduces a new approach to allocating and managing
Tx URBs that contributes to improving driver throughput and reducing
CPU load.
A pool of Tx URBs is created during driver instantiation. A URB is
allocated from the pool when there is data to transmit. The URB is
released back to the pool when the data has been transmitted by the
device.
The default URB buffer size is different for each USB bus speed.
The chosen sizes provide good USB utilisation with little impact on
overall packet latency.
SKBs to be transmitted are added to a pending queue for processing.
The driver tracks the available Tx URB buffer space and copies as
much pending data as possible into each free URB. Each full URB
is then submitted to the USB host controller for transmission.
Signed-off-by: John Efstathiades <john.efstathiades@pebblebay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix memory allocation that fails to check for NULL return.
Signed-off-by: John Efstathiades <john.efstathiades@pebblebay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Xiaoliang Yang says:
====================
net: dsa: felix: psfp support on vsc9959
VSC9959 hardware supports Per-Stream Filtering and Policing(PSFP).
This patch series add PSFP support on tc flower offload of ocelot
driver. Use chain 30000 to distinguish PSFP from VCAP blocks. Add gate
and police set to support PSFP in VSC9959 driver.
v6-v7 changes:
- Add a patch to restrict psfp rules on ingress port.
- Using stats.drops to show the packet count discarded by the rule.
v5->v6 changes:
- Modify ocelot_mact_lookup() parameters.
- Use parameters ssid and sfid instead of streamdata in
ocelot_mact_learn_streamdata() function.
- Serialize STREAMDATA and MAC table write.
v4->v5 changes:
- Add MAC table lock patch, and move stream data write in
ocelot_mact_learn_streamdata().
- Add two sections of VCAP policers to Seville platform.
v3->v4 changes:
- Introduce vsc9959_psfp_sfi_table_get() function in patch where it is
used to fix compile warning.
v2->v3 changes:
- Reorder first two patches. Export struct ocelot_mact_entry, then add
ocelot_mact_lookup() and ocelot_mact_write() functions.
- Add PSFP list to struct ocelot, and init it by using
ocelot->ops->psfp_init().
v1->v2 changes:
- Use tc flower offload of ocelot driver to support PSFP add and delete.
- Add PSFP tables add/del functions in felix_vsc9959.c.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
PSFP rules take effect on the streams from any port of VSC9959 switch.
This patch use ingress port to limit the rule only active on this port.
Each stream can only match two ingress source ports in VSC9959. Streams
from lowest port gets the configuration of SFID pointed by MAC Table
lookup and streams from highest port gets the configuration of (SFID+1)
pointed by MAC Table lookup. This patch defines the PSFP rule on highest
port as dummy rule, which means that it does not modify the MAC table.
Signed-off-by: Xiaoliang Yang <xiaoliang.yang_1@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch add police action to set flow meter table which is defined
in IEEE802.1Qci. Flow metering is two rates two buckets and three color
marker to policing the frames, we only enable one rate one bucket in
this patch.
Flow metering shares a same policer pool with VCAP policers, so the PSFP
policer calls ocelot_vcap_policer_add() and ocelot_vcap_policer_del() to
set flow meter police.
Signed-off-by: Xiaoliang Yang <xiaoliang.yang_1@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Policer was previously automatically assigned from the highest index to
the lowest index from policer pool. But police action of tc flower now
uses index to set an police entry. This patch uses the police index to
set vcap policers, so that one policer can be shared by multiple rules.
Signed-off-by: Xiaoliang Yang <xiaoliang.yang_1@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds stream gate settings for PSFP. Use SGI table to store
stream gate entries. Disable the gate entry when it is not used by any
stream.
Signed-off-by: Xiaoliang Yang <xiaoliang.yang_1@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
VSC9959 supports Per-Stream Filtering and Policing(PSFP) that complies
with the IEEE 802.1Qci standard. The stream is identified by Null stream
identification(DMAC and VLAN ID) defined in IEEE802.1CB.
For PSFP, four tables need to be set up: stream table, stream filter
table, stream gate table, and flow meter table. Identify the stream by
parsing the tc flower keys and add it to the stream table. The stream
filter table is automatically maintained, and its index is determined by
SGID(flow gate index) and FMID(flow meter index).
Signed-off-by: Xiaoliang Yang <xiaoliang.yang_1@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
PSFP support gate and police action. This patch add the gate and police
action to flower parse action, check chain ID to determine which block
to offload. Adding psfp callback functions to add, delete and update gate
and police in PSFP table if hardware supports it.
Signed-off-by: Xiaoliang Yang <xiaoliang.yang_1@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Some chips in the ocelot series such as VSC9959 support Per-Stream
Filtering and Policing(PSFP), which is processing after VCAP blocks.
We set this block on chain 30000 and set vcap IS2 chain to goto PSFP
chain if hardware support.
Signed-off-by: Xiaoliang Yang <xiaoliang.yang_1@nxp.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
ocelot_mact_learn_streamdata() can be used in VSC9959 to overwrite an
FDB entry with stream data. The stream data includes SFID and SSID which
can be used for PSFP and FRER set.
ocelot_mact_lookup() can be used to check if the given {DMAC, VID} FDB
entry is exist, and also can retrieve the DEST_IDX and entry type for
the FDB entry.
Signed-off-by: Xiaoliang Yang <xiaoliang.yang_1@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The definition of macro MOTO_SROM_BUG is:
#define MOTO_SROM_BUG (lp->active == 8 && (get_unaligned_le32(
dev->dev_addr) & 0x00ffffff) == 0x3e0008)
and the if statement
if (MOTO_SROM_BUG) lp->active = 0;
using this macro indicates lp->active could be 8. If lp->active is 8 and
the second comparison of this macro is false. lp->active will remain 8 in:
lp->phy[lp->active].gep = (*p ? p : NULL); p += (2 * (*p) + 1);
lp->phy[lp->active].rst = (*p ? p : NULL); p += (2 * (*p) + 1);
lp->phy[lp->active].mc = get_unaligned_le16(p); p += 2;
lp->phy[lp->active].ana = get_unaligned_le16(p); p += 2;
lp->phy[lp->active].fdx = get_unaligned_le16(p); p += 2;
lp->phy[lp->active].ttm = get_unaligned_le16(p); p += 2;
lp->phy[lp->active].mci = *p;
However, the length of array lp->phy is 8, so array overflows can occur.
To fix these possible array overflows, we first check lp->active and then
return -EINVAL if it is greater or equal to ARRAY_SIZE(lp->phy) (i.e. 8).
Reported-by: TOTE Robot <oslab@tsinghua.edu.cn>
Signed-off-by: Teng Qi <starmiku1207184332@gmail.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
In 99ce45d5e, we moved a route refcount decrement from
mctp_do_fragment_route into the caller. This invalidates the assumption
that the route test makes about refcount behaviour, so the route tests
fail.
This change fixes the test case to suit the new refcount behaviour.
Fixes: 99ce45d5e7 ("mctp: Implement extended addressing")
Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Use the macro 'swap()' defined in 'include/linux/minmax.h' to avoid
opencoding it.
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Yao Jing <yao.jing2@zte.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
In line 5001, if all id in the array 'lp->phy[8]' is not 0, when the
'for' end, the 'k' is 8.
At this time, the array 'lp->phy[8]' may be out of bound.
Signed-off-by: zhangyue <zhangyue1@kylinos.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add missing entries to fix these "make htmldocs" warnings.
./include/linux/skbuff.h:953: warning: Function parameter or member 'll_node' not described in 'sk_buff'
./include/net/sock.h:540: warning: Function parameter or member 'defer_list' not described in 'sock'
Fixes: f35f821935 ("tcp: defer skb freeing after socket lock is released")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
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.
====================
Signed-off-by: David S. Miller <davem@davemloft.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.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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.
EDIT: added {}'s, thanks Kees
Signed-off-by: Jordy Zomer <jordy@pwning.systems>
Signed-off-by: David S. Miller <davem@davemloft.net>
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.
[1] https://bugzilla.kernel.org/show_bug.cgi?id=214933
Fixes: 69a74aef8a ("e100: use generic power management")
Cc: Vaibhav Gupta <vaibhavgupta40@gmail.com>
Reported-by: Alexey Kuznetsov <axet@me.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Alexey Kuznetsov <axet@me.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Russell King says:
====================
net: dpaa2: phylink validate implementation updates
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.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
DPAA2 has no special behaviour in its validation implementation, so can
be switched to phylink_generic_validate().
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
