Merge tag 'v6.6.44' into for/openbmc/dev-6.6

This is the 6.6.44 stable release

selftests/bpf: Null checks for links in bpf_tcp_ca

[ Upstream commit eef0532e900c20a6760da829e82dac3ee18688c5 ]

Run bpf_tcp_ca selftests (./test_progs -t bpf_tcp_ca) on a Loongarch
platform, some "

selftests/bpf: Null checks for links in bpf_tcp_ca

[ Upstream commit eef0532e900c20a6760da829e82dac3ee18688c5 ]

Run bpf_tcp_ca selftests (./test_progs -t bpf_tcp_ca) on a Loongarch
platform, some "Segmentation fault" errors occur:

'''
test_dctcp:PASS:bpf_dctcp__open_and_load 0 nsec
test_dctcp:FAIL:bpf_map__attach_struct_ops unexpected error: -524
#29/1 bpf_tcp_ca/dctcp:FAIL
test_cubic:PASS:bpf_cubic__open_and_load 0 nsec
test_cubic:FAIL:bpf_map__attach_struct_ops unexpected error: -524
#29/2 bpf_tcp_ca/cubic:FAIL
test_dctcp_fallback:PASS:dctcp_skel 0 nsec
test_dctcp_fallback:PASS:bpf_dctcp__load 0 nsec
test_dctcp_fallback:FAIL:dctcp link unexpected error: -524
#29/4 bpf_tcp_ca/dctcp_fallback:FAIL
test_write_sk_pacing:PASS:open_and_load 0 nsec
test_write_sk_pacing:FAIL:attach_struct_ops unexpected error: -524
#29/6 bpf_tcp_ca/write_sk_pacing:FAIL
test_update_ca:PASS:open 0 nsec
test_update_ca:FAIL:attach_struct_ops unexpected error: -524
settcpca:FAIL:setsockopt unexpected setsockopt: \
actual -1 == expected -1
(network_helpers.c:99: errno: No such file or directory) \
Failed to call post_socket_cb
start_test:FAIL:start_server_str unexpected start_server_str: \
actual -1 == expected -1
test_update_ca:FAIL:ca1_ca1_cnt unexpected ca1_ca1_cnt: \
actual 0 <= expected 0
#29/9 bpf_tcp_ca/update_ca:FAIL
#29 bpf_tcp_ca:FAIL
Caught signal #11!
Stack trace:
./test_progs(crash_handler+0x28)[0x5555567ed91c]
linux-vdso.so.1(__vdso_rt_sigreturn+0x0)[0x7ffffee408b0]
./test_progs(bpf_link__update_map+0x80)[0x555556824a78]
./test_progs(+0x94d68)[0x5555564c4d68]
./test_progs(test_bpf_tcp_ca+0xe8)[0x5555564c6a88]
./test_progs(+0x3bde54)[0x5555567ede54]
./test_progs(main+0x61c)[0x5555567efd54]
/usr/lib64/libc.so.6(+0x22208)[0x7ffff2aaa208]
/usr/lib64/libc.so.6(__libc_start_main+0xac)[0x7ffff2aaa30c]
./test_progs(_start+0x48)[0x55555646bca8]
Segmentation fault
'''

This is because BPF trampoline is not implemented on Loongarch yet,
"link" returned by bpf_map__attach_struct_ops() is NULL. test_progs
crashs when this NULL link passes to bpf_link__update_map(). This
patch adds NULL checks for all links in bpf_tcp_ca to fix these errors.
If "link" is NULL, goto the newly added label "out" to destroy the skel.

v2:
- use "goto out" instead of "return" as Eduard suggested.

Fixes: 06da9f3bd641 ("selftests/bpf: Test switching TCP Congestion Control algorithms.")
Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>
Reviewed-by: Alan Maguire <alan.maguire@oracle.com>
Link: https://lore.kernel.org/r/b4c841492bd4ed97964e4e61e92827ce51bf1dc9.1720615848.git.tanggeliang@kylinos.cn
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

show more ...

Merge tag 'net-6.6-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
"Including fixes from Bluetooth, netfilter, BPF and WiFi.

I didn't

Merge tag 'net-6.6-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
"Including fixes from Bluetooth, netfilter, BPF and WiFi.

I didn't collect precise data but feels like we've got a lot of 6.5
fixes here. WiFi fixes are most user-awaited.

Current release - regressions:

- Bluetooth: fix hci_link_tx_to RCU lock usage

Current release - new code bugs:

- bpf: mprog: fix maximum program check on mprog attachment

- eth: ti: icssg-prueth: fix signedness bug in prueth_init_tx_chns()

Previous releases - regressions:

- ipv6: tcp: add a missing nf_reset_ct() in 3WHS handling

- vringh: don't use vringh_kiov_advance() in vringh_iov_xfer(), it
doesn't handle zero length like we expected

- wifi:
- cfg80211: fix cqm_config access race, fix crashes with brcmfmac
- iwlwifi: mvm: handle PS changes in vif_cfg_changed
- mac80211: fix mesh id corruption on 32 bit systems
- mt76: mt76x02: fix MT76x0 external LNA gain handling

- Bluetooth: fix handling of HCI_QUIRK_STRICT_DUPLICATE_FILTER

- l2tp: fix handling of transhdrlen in __ip{,6}_append_data()

- dsa: mv88e6xxx: avoid EEPROM timeout when EEPROM is absent

- eth: stmmac: fix the incorrect parameter after refactoring

Previous releases - always broken:

- net: replace calls to sock->ops->connect() with kernel_connect(),
prevent address rewrite in kernel_bind(); otherwise BPF hooks may
modify arguments, unexpectedly to the caller

- tcp: fix delayed ACKs when reads and writes align with MSS

- bpf:
- verifier: unconditionally reset backtrack_state masks on global
func exit
- s390: let arch_prepare_bpf_trampoline return program size, fix
struct_ops offsets
- sockmap: fix accounting of available bytes in presence of PEEKs
- sockmap: reject sk_msg egress redirects to non-TCP sockets

- ipv4/fib: send netlink notify when delete source address routes

- ethtool: plca: fix width of reads when parsing netlink commands

- netfilter: nft_payload: rebuild vlan header on h_proto access

- Bluetooth: hci_codec: fix leaking memory of local_codecs

- eth: intel: ice: always add legacy 32byte RXDID in supported_rxdids

- eth: stmmac:
- dwmac-stm32: fix resume on STM32 MCU
- remove buggy and unneeded stmmac_poll_controller, depend on NAPI

- ibmveth: always recompute TCP pseudo-header checksum, fix use of
the driver with Open vSwitch

- wifi:
- rtw88: rtw8723d: fix MAC address offset in EEPROM
- mt76: fix lock dependency problem for wed_lock
- mwifiex: sanity check data reported by the device
- iwlwifi: ensure ack flag is properly cleared
- iwlwifi: mvm: fix a memory corruption due to bad pointer arithm
- iwlwifi: mvm: fix incorrect usage of scan API

Misc:

- wifi: mac80211: work around Cisco AP 9115 VHT MPDU length"

* tag 'net-6.6-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (99 commits)
MAINTAINERS: update Matthieu's email address
mptcp: userspace pm allow creating id 0 subflow
mptcp: fix delegated action races
net: stmmac: remove unneeded stmmac_poll_controller
net: lan743x: also select PHYLIB
net: ethernet: mediatek: disable irq before schedule napi
net: mana: Fix oversized sge0 for GSO packets
net: mana: Fix the tso_bytes calculation
net: mana: Fix TX CQE error handling
netlink: annotate data-races around sk->sk_err
sctp: update hb timer immediately after users change hb_interval
sctp: update transport state when processing a dupcook packet
tcp: fix delayed ACKs for MSS boundary condition
tcp: fix quick-ack counting to count actual ACKs of new data
page_pool: fix documentation typos
tipc: fix a potential deadlock on &tx->lock
net: stmmac: dwmac-stm32: fix resume on STM32 MCU
ipv4: Set offload_failed flag in fibmatch results
netfilter: nf_tables: nft_set_rbtree: fix spurious insertion failure
netfilter: nf_tables: Deduplicate nft_register_obj audit logs
...

show more ...

Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf

Daniel Borkmann says:

====================
pull-request: bpf 2023-10-02

We've added 11 non-merge commits during th

Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf

Daniel Borkmann says:

====================
pull-request: bpf 2023-10-02

We've added 11 non-merge commits during the last 12 day(s) which contain
a total of 12 files changed, 176 insertions(+), 41 deletions(-).

The main changes are:

1) Fix BPF verifier to reset backtrack_state masks on global function
exit as otherwise subsequent precision tracking would reuse them,
from Andrii Nakryiko.

2) Several sockmap fixes for available bytes accounting,
from John Fastabend.

3) Reject sk_msg egress redirects to non-TCP sockets given this
is only supported for TCP sockets today, from Jakub Sitnicki.

4) Fix a syzkaller splat in bpf_mprog when hitting maximum program
limits with BPF_F_BEFORE directive, from Daniel Borkmann
and Nikolay Aleksandrov.

5) Fix BPF memory allocator to use kmalloc_size_roundup() to adjust
size_index for selecting a bpf_mem_cache, from Hou Tao.

6) Fix arch_prepare_bpf_trampoline return code for s390 JIT,
from Song Liu.

7) Fix bpf_trampoline_get when CONFIG_BPF_JIT is turned off,
from Leon Hwang.

* tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
bpf: Use kmalloc_size_roundup() to adjust size_index
selftest/bpf: Add various selftests for program limits
bpf, mprog: Fix maximum program check on mprog attachment
bpf, sockmap: Reject sk_msg egress redirects to non-TCP sockets
bpf, sockmap: Add tests for MSG_F_PEEK
bpf, sockmap: Do not inc copied_seq when PEEK flag set
bpf: tcp_read_skb needs to pop skb regardless of seq
bpf: unconditionally reset backtrack_state masks on global func exit
bpf: Fix tr dereferencing
selftests/bpf: Check bpf_cubic_acked() is called via struct_ops
s390/bpf: Let arch_prepare_bpf_trampoline return program size
====================

Link: https://lore.kernel.org/r/20231002113417.2309-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

show more ...

Merge branch 's390-bpf-fix-arch_prepare_bpf_trampoline'

Song Liu says:

====================
s390/bpf: Fix arch_prepare_bpf_trampoline

While working on trampoline, I found s390's arch_prepare_bpf_t

Merge branch 's390-bpf-fix-arch_prepare_bpf_trampoline'

Song Liu says:

====================
s390/bpf: Fix arch_prepare_bpf_trampoline

While working on trampoline, I found s390's arch_prepare_bpf_trampoline
returns 0 on success, which breaks struct_ops. However, the CI doesn't
catch this issue. Turns out test_progs:bpf_tcp_ca doesn't really test
members of a struct_ops are actually called via the trampolines.

1/2 fixes arch_prepare_bpf_trampoline for s390.
2/2 adds a check to test_progs:bpf_tcp_ca to verify bpf_cubic_acked() is
indeed called by the trampoline. Without 1/2, this check would fail on
s390.
====================

Link: https://lore.kernel.org/r/20230919060258.3237176-1-song@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

show more ...

selftests/bpf: Check bpf_cubic_acked() is called via struct_ops

Test bpf_tcp_ca (in test_progs) checks multiple tcp_congestion_ops.
However, there isn't a test that verifies functions in the
tcp_con

selftests/bpf: Check bpf_cubic_acked() is called via struct_ops

Test bpf_tcp_ca (in test_progs) checks multiple tcp_congestion_ops.
However, there isn't a test that verifies functions in the
tcp_congestion_ops is actually called. Add a check to verify that
bpf_cubic_acked is actually called during the test.

Suggested-by: Martin KaFai Lau <martin.lau@kernel.org>
Signed-off-by: Song Liu <song@kernel.org>
Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
Link: https://lore.kernel.org/r/20230919060258.3237176-3-song@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

show more ...

Merge branch 'next' into for-linus

Prepare input updates for 6.6 merge window.

Merge tag 'v6.4' into next

Sync up with mainline to bring in updates to shared infrastructure.

Merge drm/drm-next into drm-misc-next-fixes

Backmerging to sync drm-misc-next-fixes with drm-misc-next.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>

Merge branch 'drm-next' of git://anongit.freedesktop.org/drm/drm into msm-next-lumag-base

Merge the drm-next tree to pick up the DRM DSC helpers (merged via
drm-intel-next tree). MSM DSC v1.2 patche

Merge branch 'drm-next' of git://anongit.freedesktop.org/drm/drm into msm-next-lumag-base

Merge the drm-next tree to pick up the DRM DSC helpers (merged via
drm-intel-next tree). MSM DSC v1.2 patches depend on these helpers.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

show more ...

Merge tag 'v6.4-rc4' into wpan-next/staging

Linux 6.4-rc4

Merge drm/drm-next into drm-intel-gt-next

For conflict avoidance we need the following commit:

c9a9f18d3ad8 drm/i915/huc: use const struct bus_type pointers

Signed-off-by: Tvrtko Ursulin <tvrtko

Merge drm/drm-next into drm-intel-gt-next

For conflict avoidance we need the following commit:

c9a9f18d3ad8 drm/i915/huc: use const struct bus_type pointers

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

show more ...

Merge drm/drm-next into drm-intel-next

Backmerge to get some hwmon dependencies.

Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

Merge drm/drm-fixes into drm-misc-fixes

Let's bring 6.4-rc1 in drm-misc-fixes to start the new fix cycle.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>

Merge drm/drm-next into drm-misc-next

Start the 6.5 release cycle.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>

Merge tag 'net-next-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Paolo Abeni:
"Core:

- Introduce a config option to tweak MAX_SKB_FRAGS. In

Merge tag 'net-next-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Paolo Abeni:
"Core:

- Introduce a config option to tweak MAX_SKB_FRAGS. Increasing the
default value allows for better BIG TCP performances

- Reduce compound page head access for zero-copy data transfers

- RPS/RFS improvements, avoiding unneeded NET_RX_SOFTIRQ when
possible

- Threaded NAPI improvements, adding defer skb free support and
unneeded softirq avoidance

- Address dst_entry reference count scalability issues, via false
sharing avoidance and optimize refcount tracking

- Add lockless accesses annotation to sk_err[_soft]

- Optimize again the skb struct layout

- Extends the skb drop reasons to make it usable by multiple
subsystems

- Better const qualifier awareness for socket casts

BPF:

- Add skb and XDP typed dynptrs which allow BPF programs for more
ergonomic and less brittle iteration through data and
variable-sized accesses

- Add a new BPF netfilter program type and minimal support to hook
BPF programs to netfilter hooks such as prerouting or forward

- Add more precise memory usage reporting for all BPF map types

- Adds support for using {FOU,GUE} encap with an ipip device
operating in collect_md mode and add a set of BPF kfuncs for
controlling encap params

- Allow BPF programs to detect at load time whether a particular
kfunc exists or not, and also add support for this in light
skeleton

- Bigger batch of BPF verifier improvements to prepare for upcoming
BPF open-coded iterators allowing for less restrictive looping
capabilities

- Rework RCU enforcement in the verifier, add kptr_rcu and enforce
BPF programs to NULL-check before passing such pointers into kfunc

- Add support for kptrs in percpu hashmaps, percpu LRU hashmaps and
in local storage maps

- Enable RCU semantics for task BPF kptrs and allow referenced kptr
tasks to be stored in BPF maps

- Add support for refcounted local kptrs to the verifier for allowing
shared ownership, useful for adding a node to both the BPF list and
rbtree

- Add BPF verifier support for ST instructions in
convert_ctx_access() which will help new -mcpu=v4 clang flag to
start emitting them

- Add ARM32 USDT support to libbpf

- Improve bpftool's visual program dump which produces the control
flow graph in a DOT format by adding C source inline annotations

Protocols:

- IPv4: Allow adding to IPv4 address a 'protocol' tag. Such value
indicates the provenance of the IP address

- IPv6: optimize route lookup, dropping unneeded R/W lock acquisition

- Add the handshake upcall mechanism, allowing the user-space to
implement generic TLS handshake on kernel's behalf

- Bridge: support per-{Port, VLAN} neighbor suppression, increasing
resilience to nodes failures

- SCTP: add support for Fair Capacity and Weighted Fair Queueing
schedulers

- MPTCP: delay first subflow allocation up to its first usage. This
will allow for later better LSM interaction

- xfrm: Remove inner/outer modes from input/output path. These are
not needed anymore

- WiFi:
- reduced neighbor report (RNR) handling for AP mode
- HW timestamping support
- support for randomized auth/deauth TA for PASN privacy
- per-link debugfs for multi-link
- TC offload support for mac80211 drivers
- mac80211 mesh fast-xmit and fast-rx support
- enable Wi-Fi 7 (EHT) mesh support

Netfilter:

- Add nf_tables 'brouting' support, to force a packet to be routed
instead of being bridged

- Update bridge netfilter and ovs conntrack helpers to handle IPv6
Jumbo packets properly, i.e. fetch the packet length from
hop-by-hop extension header. This is needed for BIT TCP support

- The iptables 32bit compat interface isn't compiled in by default
anymore

- Move ip(6)tables builtin icmp matches to the udptcp one. This has
the advantage that icmp/icmpv6 match doesn't load the
iptables/ip6tables modules anymore when iptables-nft is used

- Extended netlink error report for netdevice in flowtables and
netdev/chains. Allow for incrementally add/delete devices to netdev
basechain. Allow to create netdev chain without device

Driver API:

- Remove redundant Device Control Error Reporting Enable, as PCI core
has already error reporting enabled at enumeration time

- Move Multicast DB netlink handlers to core, allowing devices other
then bridge to use them

- Allow the page_pool to directly recycle the pages from safely
localized NAPI

- Implement lockless TX queue stop/wake combo macros, allowing for
further code de-duplication and sanitization

- Add YNL support for user headers and struct attrs

- Add partial YNL specification for devlink

- Add partial YNL specification for ethtool

- Add tc-mqprio and tc-taprio support for preemptible traffic classes

- Add tx push buf len param to ethtool, specifies the maximum number
of bytes of a transmitted packet a driver can push directly to the
underlying device

- Add basic LED support for switch/phy

- Add NAPI documentation, stop relaying on external links

- Convert dsa_master_ioctl() to netdev notifier. This is a
preparatory work to make the hardware timestamping layer selectable
by user space

- Add transceiver support and improve the error messages for CAN-FD
controllers

New hardware / drivers:

- Ethernet:
- AMD/Pensando core device support
- MediaTek MT7981 SoC
- MediaTek MT7988 SoC
- Broadcom BCM53134 embedded switch
- Texas Instruments CPSW9G ethernet switch
- Qualcomm EMAC3 DWMAC ethernet
- StarFive JH7110 SoC
- NXP CBTX ethernet PHY

- WiFi:
- Apple M1 Pro/Max devices
- RealTek rtl8710bu/rtl8188gu
- RealTek rtl8822bs, rtl8822cs and rtl8821cs SDIO chipset

- Bluetooth:
- Realtek RTL8821CS, RTL8851B, RTL8852BS
- Mediatek MT7663, MT7922
- NXP w8997
- Actions Semi ATS2851
- QTI WCN6855
- Marvell 88W8997

- Can:
- STMicroelectronics bxcan stm32f429

Drivers:

- Ethernet NICs:
- Intel (1G, icg):
- add tracking and reporting of QBV config errors
- add support for configuring max SDU for each Tx queue
- Intel (100G, ice):
- refactor mailbox overflow detection to support Scalable IOV
- GNSS interface optimization
- Intel (i40e):
- support XDP multi-buffer
- nVidia/Mellanox:
- add the support for linux bridge multicast offload
- enable TC offload for egress and engress MACVLAN over bond
- add support for VxLAN GBP encap/decap flows offload
- extend packet offload to fully support libreswan
- support tunnel mode in mlx5 IPsec packet offload
- extend XDP multi-buffer support
- support MACsec VLAN offload
- add support for dynamic msix vectors allocation
- drop RX page_cache and fully use page_pool
- implement thermal zone to report NIC temperature
- Netronome/Corigine:
- add support for multi-zone conntrack offload
- Solarflare/Xilinx:
- support offloading TC VLAN push/pop actions to the MAE
- support TC decap rules
- support unicast PTP

- Other NICs:
- Broadcom (bnxt): enforce software based freq adjustments only on
shared PHC NIC
- RealTek (r8169): refactor to addess ASPM issues during NAPI poll
- Micrel (lan8841): add support for PTP_PF_PEROUT
- Cadence (macb): enable PTP unicast
- Engleder (tsnep): add XDP socket zero-copy support
- virtio-net: implement exact header length guest feature
- veth: add page_pool support for page recycling
- vxlan: add MDB data path support
- gve: add XDP support for GQI-QPL format
- geneve: accept every ethertype
- macvlan: allow some packets to bypass broadcast queue
- mana: add support for jumbo frame

- Ethernet high-speed switches:
- Microchip (sparx5): Add support for TC flower templates

- Ethernet embedded switches:
- Broadcom (b54):
- configure 6318 and 63268 RGMII ports
- Marvell (mv88e6xxx):
- faster C45 bus scan
- Microchip:
- lan966x:
- add support for IS1 VCAP
- better TX/RX from/to CPU performances
- ksz9477: add ETS Qdisc support
- ksz8: enhance static MAC table operations and error handling
- sama7g5: add PTP capability
- NXP (ocelot):
- add support for external ports
- add support for preemptible traffic classes
- Texas Instruments:
- add CPSWxG SGMII support for J7200 and J721E

- Intel WiFi (iwlwifi):
- preparation for Wi-Fi 7 EHT and multi-link support
- EHT (Wi-Fi 7) sniffer support
- hardware timestamping support for some devices/firwmares
- TX beacon protection on newer hardware

- Qualcomm 802.11ax WiFi (ath11k):
- MU-MIMO parameters support
- ack signal support for management packets

- RealTek WiFi (rtw88):
- SDIO bus support
- better support for some SDIO devices (e.g. MAC address from
efuse)

- RealTek WiFi (rtw89):
- HW scan support for 8852b
- better support for 6 GHz scanning
- support for various newer firmware APIs
- framework firmware backwards compatibility

- MediaTek WiFi (mt76):
- P2P support
- mesh A-MSDU support
- EHT (Wi-Fi 7) support
- coredump support"

* tag 'net-next-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2078 commits)
net: phy: hide the PHYLIB_LEDS knob
net: phy: marvell-88x2222: remove unnecessary (void*) conversions
tcp/udp: Fix memleaks of sk and zerocopy skbs with TX timestamp.
net: amd: Fix link leak when verifying config failed
net: phy: marvell: Fix inconsistent indenting in led_blink_set
lan966x: Don't use xdp_frame when action is XDP_TX
tsnep: Add XDP socket zero-copy TX support
tsnep: Add XDP socket zero-copy RX support
tsnep: Move skb receive action to separate function
tsnep: Add functions for queue enable/disable
tsnep: Rework TX/RX queue initialization
tsnep: Replace modulo operation with mask
net: phy: dp83867: Add led_brightness_set support
net: phy: Fix reading LED reg property
drivers: nfc: nfcsim: remove return value check of `dev_dir`
net: phy: dp83867: Remove unnecessary (void*) conversions
net: ethtool: coalesce: try to make user settings stick twice
net: mana: Check if netdev/napi_alloc_frag returns single page
net: mana: Rename mana_refill_rxoob and remove some empty lines
net: veth: add page_pool stats
...

show more ...

Daniel Borkmann says:

====================
pull-request: bpf-next 2023-04-13

We've added 260 non-merge commits during the last 36 day(s) which contain
a total of 356 files changed, 21786 insertions

Daniel Borkmann says:

====================
pull-request: bpf-next 2023-04-13

We've added 260 non-merge commits during the last 36 day(s) which contain
a total of 356 files changed, 21786 insertions(+), 11275 deletions(-).

The main changes are:

1) Rework BPF verifier log behavior and implement it as a rotating log
by default with the option to retain old-style fixed log behavior,
from Andrii Nakryiko.

2) Adds support for using {FOU,GUE} encap with an ipip device operating
in collect_md mode and add a set of BPF kfuncs for controlling encap
params, from Christian Ehrig.

3) Allow BPF programs to detect at load time whether a particular kfunc
exists or not, and also add support for this in light skeleton,
from Alexei Starovoitov.

4) Optimize hashmap lookups when key size is multiple of 4,
from Anton Protopopov.

5) Enable RCU semantics for task BPF kptrs and allow referenced kptr
tasks to be stored in BPF maps, from David Vernet.

6) Add support for stashing local BPF kptr into a map value via
bpf_kptr_xchg(). This is useful e.g. for rbtree node creation
for new cgroups, from Dave Marchevsky.

7) Fix BTF handling of is_int_ptr to skip modifiers to work around
tracing issues where a program cannot be attached, from Feng Zhou.

8) Migrate a big portion of test_verifier unit tests over to
test_progs -a verifier_* via inline asm to ease {read,debug}ability,
from Eduard Zingerman.

9) Several updates to the instruction-set.rst documentation
which is subject to future IETF standardization
(https://lwn.net/Articles/926882/), from Dave Thaler.

10) Fix BPF verifier in the __reg_bound_offset's 64->32 tnum sub-register
known bits information propagation, from Daniel Borkmann.

11) Add skb bitfield compaction work related to BPF with the overall goal
to make more of the sk_buff bits optional, from Jakub Kicinski.

12) BPF selftest cleanups for build id extraction which stand on its own
from the upcoming integration work of build id into struct file object,
from Jiri Olsa.

13) Add fixes and optimizations for xsk descriptor validation and several
selftest improvements for xsk sockets, from Kal Conley.

14) Add BPF links for struct_ops and enable switching implementations
of BPF TCP cong-ctls under a given name by replacing backing
struct_ops map, from Kui-Feng Lee.

15) Remove a misleading BPF verifier env->bypass_spec_v1 check on variable
offset stack read as earlier Spectre checks cover this,
from Luis Gerhorst.

16) Fix issues in copy_from_user_nofault() for BPF and other tracers
to resemble copy_from_user_nmi() from safety PoV, from Florian Lehner
and Alexei Starovoitov.

17) Add --json-summary option to test_progs in order for CI tooling to
ease parsing of test results, from Manu Bretelle.

18) Batch of improvements and refactoring to prep for upcoming
bpf_local_storage conversion to bpf_mem_cache_{alloc,free} allocator,
from Martin KaFai Lau.

19) Improve bpftool's visual program dump which produces the control
flow graph in a DOT format by adding C source inline annotations,
from Quentin Monnet.

20) Fix attaching fentry/fexit/fmod_ret/lsm to modules by extracting
the module name from BTF of the target and searching kallsyms of
the correct module, from Viktor Malik.

21) Improve BPF verifier handling of '<const> <cond> <non_const>'
to better detect whether in particular jmp32 branches are taken,
from Yonghong Song.

22) Allow BPF TCP cong-ctls to write app_limited of struct tcp_sock.
A built-in cc or one from a kernel module is already able to write
to app_limited, from Yixin Shen.

Conflicts:

Documentation/bpf/bpf_devel_QA.rst
b7abcd9c656b ("bpf, doc: Link to submitting-patches.rst for general patch submission info")
0f10f647f455 ("bpf, docs: Use internal linking for link to netdev subsystem doc")
https://lore.kernel.org/all/20230307095812.236eb1be@canb.auug.org.au/

include/net/ip_tunnels.h
bc9d003dc48c3 ("ip_tunnel: Preserve pointer const in ip_tunnel_info_opts")
ac931d4cdec3d ("ipip,ip_tunnel,sit: Add FOU support for externally controlled ipip devices")
https://lore.kernel.org/all/20230413161235.4093777-1-broonie@kernel.org/

net/bpf/test_run.c
e5995bc7e2ba ("bpf, test_run: fix crashes due to XDP frame overwriting/corruption")
294635a8165a ("bpf, test_run: fix &xdp_frame misplacement for LIVE_FRAMES")
https://lore.kernel.org/all/20230320102619.05b80a98@canb.auug.org.au/
====================

Link: https://lore.kernel.org/r/20230413191525.7295-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

show more ...

Merge branch 'Transit between BPF TCP congestion controls.'

Kui-Feng Lee says:

====================

Major changes:

- Create bpf_links in the kernel for BPF struct_ops to register and
unregist

Merge branch 'Transit between BPF TCP congestion controls.'

Kui-Feng Lee says:

====================

Major changes:

- Create bpf_links in the kernel for BPF struct_ops to register and
unregister it.

- Enables switching between implementations of bpf-tcp-cc under a
name instantly by replacing the backing struct_ops map of a
bpf_link.

Previously, BPF struct_ops didn't go off, as even when the user
program creating it was terminated, none of these ever were pinned.
For instance, the TCP congestion control subsystem indirectly
maintains a reference count on the struct_ops of any registered BPF
implemented algorithm. Thus, the algorithm won't be deactivated until
someone deliberately unregisters it. For compatibility with other BPF
programs, bpf_links have been created to work in coordination with
struct_ops maps. This ensures that the registration and unregistration
of these respective maps is carried out at the start and end of the
bpf_link.

We also faced complications when attempting to replace an existing TCP
congestion control algorithm with a new implementation on the fly. A
struct_ops map was used to register a TCP congestion control algorithm
with a unique name. We had to either register the alternative
implementation with a new name and move over or unregister the current
one before being able to reregistration with the same name. To fix
this problem, we can an option to migrate the registration of the
algorithm from struct_ops maps to bpf_links. By modifying the backing
map of a bpf_link, it suddenly becomes possible to replace an existing
TCP congestion control algorithm with ease.
---

The major differences from v11:

- Fix incorrectly setting both old_prog_fd and old_map_fd.

The major differences from v10:

- Add old_map_fd as an additional field instead of an union in
bpf_link_update_opts.

The major differences from v9:

- Add test case for BPF_F_LINK. Includes adding old_map_fd to struct
bpf_link_update_opts in patch 6.

- Return -EPERM instead of -EINVAL when the old map fd doesn't match
with BPF_F_LINK.

- Fix -EBUSY case in bpf_map__attach_struct_ops().

The major differences form v8:

- Check bpf_struct_ops::{validate,update} in
bpf_struct_ops_map_alloc()

The major differences from v7:

- Use synchronize_rcu_mult(call_rcu, call_rcu_tasks) to replace
synchronize_rcu() and synchronize_rcu_tasks().

- Call synchronize_rcu() in tcp_update_congestion_control().

- Handle -EBUSY in bpf_map__attach_struct_ops() to allow a struct_ops
can be used to create links more than once. Include a test case.

- Add old_map_fd to bpf_attr and handle BPF_F_REPLACE in
bpf_struct_ops_map_link_update().

- Remove changes in bpf_dummy_struct_ops.c and add a check of .update
function pointer of bpf_struct_ops.

The major differences from v6:

- Reword commit logs of the patch 1, 2, and 8.

- Call synchronize_rcu_tasks() as well in bpf_struct_ops_map_free().

- Refactor bpf_struct_ops_map_free() so that
bpf_struct_ops_map_alloc() can free a struct_ops without waiting
for a RCU grace period.

The major differences from v5:

- Add a new step to bpf_object__load() to prepare vdata.

- Accept BPF_F_REPLACE.

- Check section IDs in find_struct_ops_map_by_offset()

- Add a test case to check mixing w/ and w/o link struct_ops.

- Add a test case of using struct_ops w/o link to update a link.

- Improve bpf_link__detach_struct_ops() to handle the w/ link case.

The major differences from v4:

- Rebase.

- Reorder patches and merge part 4 to part 2 of the v4.

The major differences from v3:

- Remove bpf_struct_ops_map_free_rcu(), and use synchronize_rcu().

- Improve the commit log of the part 1.

- Before transitioning to the READY state, we conduct a value check
to ensure that struct_ops can be successfully utilized and links
created later.

The major differences from v2:

- Simplify states

- Remove TOBEUNREG.

- Rename UNREG to READY.

- Stop using the refcnt of the kvalue of a struct_ops. Explicitly
increase and decrease the refcount of struct_ops.

- Prepare kernel vdata during the load phase of libbpf.

The major differences from v1:

- Added bpf_struct_ops_link to replace the previous union-based
approach.

- Added UNREG and TOBEUNREG to the state of bpf_struct_ops_map.

- bpf_struct_ops_transit_state() maintains state transitions.

- Fixed synchronization issue.

- Prepare kernel vdata of struct_ops during the loading phase of
bpf_object.

- Merged previous patch 3 to patch 1.

v11: https://lore.kernel.org/all/20230323010409.2265383-1-kuifeng@meta.com/
v10: https://lore.kernel.org/all/20230321232813.3376064-1-kuifeng@meta.com/
v9: https://lore.kernel.org/all/20230320195644.1953096-1-kuifeng@meta.com/
v8: https://lore.kernel.org/all/20230318053144.1180301-1-kuifeng@meta.com/
v7: https://lore.kernel.org/all/20230316023641.2092778-1-kuifeng@meta.com/
v6: https://lore.kernel.org/all/20230310043812.3087672-1-kuifeng@meta.com/
v5: https://lore.kernel.org/all/20230308005050.255859-1-kuifeng@meta.com/
v4: https://lore.kernel.org/all/20230307232913.576893-1-andrii@kernel.org/
v3: https://lore.kernel.org/all/20230303012122.852654-1-kuifeng@meta.com/
v2: https://lore.kernel.org/bpf/20230223011238.12313-1-kuifeng@meta.com/
v1: https://lore.kernel.org/bpf/20230214221718.503964-1-kuifeng@meta.com/
====================

Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>

show more ...

selftests/bpf: Test switching TCP Congestion Control algorithms.

Create a pair of sockets that utilize the congestion control algorithm
under a particular name. Then switch up this congestion contro

selftests/bpf: Test switching TCP Congestion Control algorithms.

Create a pair of sockets that utilize the congestion control algorithm
under a particular name. Then switch up this congestion control
algorithm to another implementation and check whether newly created
connections using the same cc name now run the new implementation.

Also, try to update a link with a struct_ops that is without
BPF_F_LINK or with a wrong or different name. These cases should fail
due to the violation of assumptions. To update a bpf_link of a
struct_ops, it must be replaced with another struct_ops that is
identical in type and name and has the BPF_F_LINK flag.

The other test case is to create links from the same struct_ops more
than once. It makes sure a struct_ops can be used repeatly.

Signed-off-by: Kui-Feng Lee <kuifeng@meta.com>
Link: https://lore.kernel.org/r/20230323032405.3735486-9-kuifeng@meta.com
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>

show more ...

Merge branch 'main' into zstd-linus

Merge branch 'next' into for-linus

Prepare input updates for 6.2 merge window.

Merge drm/drm-next into drm-misc-next-fixes

Backmerging to update drm-misc-next-fixes for the final phase
of the release cycle.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>

Merge drm/drm-next into drm-intel-next

Catch up on 6.1-rc cycle in order to solve the intel_backlight
conflict on linux-next.

Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

Merge drm/drm-next into drm-intel-gt-next

Needed to bring in v6.1-rc1 which contains commit f683b9d61319 ("i915: use the VMA iterator")
which is needed for series https://patchwork.freedesktop.org/s

Merge drm/drm-next into drm-intel-gt-next

Needed to bring in v6.1-rc1 which contains commit f683b9d61319 ("i915: use the VMA iterator")
which is needed for series https://patchwork.freedesktop.org/series/110083/ .

Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

show more ...

Merge branch 'main' into zstd-next