Commit Graph

13006 Commits

Author SHA1 Message Date
Davide Caratti 9d1ed17f93 uapi: mptcp: use header file generated from YAML spec
generated with:

 $ ./tools/net/ynl/ynl-gen-c.py --mode uapi \
 > --spec Documentation/netlink/specs/mptcp.yaml \
 > --header -o include/uapi/linux/mptcp_pm.h

Link: https://github.com/multipath-tcp/mptcp_net-next/issues/340
Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: Mat Martineau <martineau@kernel.org>
Link: https://lore.kernel.org/r/20231023-send-net-next-20231023-1-v2-5-16b1f701f900@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-10-24 13:00:31 -07:00
Davide Caratti 1d0507f468 net: mptcp: convert netlink from small_ops to ops
in the current MPTCP control plane, all operations use a netlink
attribute of the same type "MPTCP_PM_ATTR". However, add/del/get/flush
operations only parse the first element in the message _ the one that
describes MPTCP endpoints (that was named MPTCP_PM_ATTR_ADDR and
mostly used in ADD_ADDR operations _ probably the similarity of "attr",
"addr" and "add" might cause some confusion to human readers).
Convert MPTCP from 'small_ops' to 'ops', thus allowing different attributes
for each single operation, hopefully makes all this clearer to human
readers.

- use a separate attribute set for add/del/get/flush address operation,
  binary compatible with the existing one, to store the endpoint address.
  MPTCP_PM_ENDPOINT_ADDR is added to the uAPI (with the same value as
  MPTCP_PM_ATTR_ADDR) for these operations.
- convert mptcp_pm_ops[] and add policy files accordingly.

this prepares MPTCP control plane to be described as YAML spec.

Link: https://github.com/multipath-tcp/mptcp_net-next/issues/340
Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: Mat Martineau <martineau@kernel.org>
Link: https://lore.kernel.org/r/20231023-send-net-next-20231023-1-v2-3-16b1f701f900@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-10-24 13:00:31 -07:00
Jiri Pirko e3570f0408 devlink: make devlink_flash_overwrite enum named one
Since this enum is going to be used in generated userspace file, name it
properly.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://lore.kernel.org/r/20231021112711.660606-7-jiri@resnulli.us
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-10-23 16:12:46 -07:00
Eric Dumazet a77a0f5c7f tcp: add TCPI_OPT_USEC_TS
Add the ability to report in tcp_info.tcpi_options if
a flow is using usec resolution in TCP TS val.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-10-23 09:35:01 +01:00
Eric Dumazet 3d44de9a10 tcp: add RTAX_FEATURE_TCP_USEC_TS
This new dst feature flag will be used to allow TCP to use usec
based timestamps instead of msec ones.

ip route .... feature tcp_usec_ts

Also document that RTAX_FEATURE_SACK and RTAX_FEATURE_TIMESTAMP
are unused.

RTAX_FEATURE_ALLFRAG is also going away soon.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-10-23 09:35:01 +01:00
Heng Guo b4a11b2033 net: fix IPSTATS_MIB_OUTPKGS increment in OutForwDatagrams.
Reproduce environment:
network with 3 VM linuxs is connected as below:
VM1<---->VM2(latest kernel 6.5.0-rc7)<---->VM3
VM1: eth0 ip: 192.168.122.207 MTU 1500
VM2: eth0 ip: 192.168.122.208, eth1 ip: 192.168.123.224 MTU 1500
VM3: eth0 ip: 192.168.123.240 MTU 1500

Reproduce:
VM1 send 1400 bytes UDP data to VM3 using tools scapy with flags=0.
scapy command:
send(IP(dst="192.168.123.240",flags=0)/UDP()/str('0'*1400),count=1,
inter=1.000000)

Result:
Before IP data is sent.
----------------------------------------------------------------------
root@qemux86-64:~# cat /proc/net/snmp
Ip: Forwarding DefaultTTL InReceives InHdrErrors InAddrErrors
  ForwDatagrams InUnknownProtos InDiscards InDelivers OutRequests
  OutDiscards OutNoRoutes ReasmTimeout ReasmReqds ReasmOKs ReasmFails
  FragOKs FragFails FragCreates
Ip: 1 64 11 0 3 4 0 0 4 7 0 0 0 0 0 0 0 0 0
......
----------------------------------------------------------------------
After IP data is sent.
----------------------------------------------------------------------
root@qemux86-64:~# cat /proc/net/snmp
Ip: Forwarding DefaultTTL InReceives InHdrErrors InAddrErrors
  ForwDatagrams InUnknownProtos InDiscards InDelivers OutRequests
  OutDiscards OutNoRoutes ReasmTimeout ReasmReqds ReasmOKs ReasmFails
  FragOKs FragFails FragCreates
Ip: 1 64 12 0 3 5 0 0 4 8 0 0 0 0 0 0 0 0 0
......
----------------------------------------------------------------------
"ForwDatagrams" increase from 4 to 5 and "OutRequests" also increase
from 7 to 8.

Issue description and patch:
IPSTATS_MIB_OUTPKTS("OutRequests") is counted with IPSTATS_MIB_OUTOCTETS
("OutOctets") in ip_finish_output2().
According to RFC 4293, it is "OutOctets" counted with "OutTransmits" but
not "OutRequests". "OutRequests" does not include any datagrams counted
in "ForwDatagrams".
ipSystemStatsOutOctets OBJECT-TYPE
    DESCRIPTION
           "The total number of octets in IP datagrams delivered to the
            lower layers for transmission.  Octets from datagrams
            counted in ipIfStatsOutTransmits MUST be counted here.
ipSystemStatsOutRequests OBJECT-TYPE
    DESCRIPTION
           "The total number of IP datagrams that local IP user-
            protocols (including ICMP) supplied to IP in requests for
            transmission.  Note that this counter does not include any
            datagrams counted in ipSystemStatsOutForwDatagrams.
So do patch to define IPSTATS_MIB_OUTPKTS to "OutTransmits" and add
IPSTATS_MIB_OUTREQUESTS for "OutRequests".
Add IPSTATS_MIB_OUTREQUESTS counter in __ip_local_out() for ipv4 and add
IPSTATS_MIB_OUT counter in ip6_finish_output2() for ipv6.

Test result with patch:
Before IP data is sent.
----------------------------------------------------------------------
root@qemux86-64:~# cat /proc/net/snmp
Ip: Forwarding DefaultTTL InReceives InHdrErrors InAddrErrors
  ForwDatagrams InUnknownProtos InDiscards InDelivers OutRequests
  OutDiscards OutNoRoutes ReasmTimeout ReasmReqds ReasmOKs ReasmFails
  FragOKs FragFails FragCreates OutTransmits
Ip: 1 64 9 0 5 1 0 0 3 3 0 0 0 0 0 0 0 0 0 4
......
root@qemux86-64:~# cat /proc/net/netstat
......
IpExt: InNoRoutes InTruncatedPkts InMcastPkts OutMcastPkts InBcastPkts
  OutBcastPkts InOctets OutOctets InMcastOctets OutMcastOctets
  InBcastOctets OutBcastOctets InCsumErrors InNoECTPkts InECT1Pkts
  InECT0Pkts InCEPkts ReasmOverlaps
IpExt: 0 0 0 0 0 0 2976 1896 0 0 0 0 0 9 0 0 0 0
----------------------------------------------------------------------
After IP data is sent.
----------------------------------------------------------------------
root@qemux86-64:~# cat /proc/net/snmp
Ip: Forwarding DefaultTTL InReceives InHdrErrors InAddrErrors
  ForwDatagrams InUnknownProtos InDiscards InDelivers OutRequests
  OutDiscards OutNoRoutes ReasmTimeout ReasmReqds ReasmOKs ReasmFails
  FragOKs FragFails FragCreates OutTransmits
Ip: 1 64 10 0 5 2 0 0 3 3 0 0 0 0 0 0 0 0 0 5
......
root@qemux86-64:~# cat /proc/net/netstat
......
IpExt: InNoRoutes InTruncatedPkts InMcastPkts OutMcastPkts InBcastPkts
  OutBcastPkts InOctets OutOctets InMcastOctets OutMcastOctets
  InBcastOctets OutBcastOctets InCsumErrors InNoECTPkts InECT1Pkts
  InECT0Pkts InCEPkts ReasmOverlaps
IpExt: 0 0 0 0 0 0 4404 3324 0 0 0 0 0 10 0 0 0 0
----------------------------------------------------------------------
"ForwDatagrams" increase from 1 to 2 and "OutRequests" is keeping 3.
"OutTransmits" increase from 4 to 5 and "OutOctets" increase 1428.

Signed-off-by: Heng Guo <heng.guo@windriver.com>
Reviewed-by: Kun Song <Kun.Song@windriver.com>
Reviewed-by: Filip Pudak <filip.pudak@windriver.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-10-20 12:01:00 +01:00
Jakub Kicinski 374d345d9b netlink: add variable-length / auto integers
We currently push everyone to use padding to align 64b values
in netlink. Un-padded nla_put_u64() doesn't even exist any more.

The story behind this possibly start with this thread:
https://lore.kernel.org/netdev/20121204.130914.1457976839967676240.davem@davemloft.net/
where DaveM was concerned about the alignment of a structure
containing 64b stats. If user space tries to access such struct
directly:

	struct some_stats *stats = nla_data(attr);
	printf("A: %llu", stats->a);

lack of alignment may become problematic for some architectures.
These days we most often put every single member in a separate
attribute, meaning that the code above would use a helper like
nla_get_u64(), which can deal with alignment internally.
Even for arches which don't have good unaligned access - access
aligned to 4B should be pretty efficient.
Kernel and well known libraries deal with unaligned input already.

Padded 64b is quite space-inefficient (64b + pad means at worst 16B
per attr vs 32b which takes 8B). It is also more typing:

    if (nla_put_u64_pad(rsp, NETDEV_A_SOMETHING_SOMETHING,
                        value, NETDEV_A_SOMETHING_PAD))

Create a new attribute type which will use 32 bits at netlink
level if value is small enough (probably most of the time?),
and (4B-aligned) 64 bits otherwise. Kernel API is just:

    if (nla_put_uint(rsp, NETDEV_A_SOMETHING_SOMETHING, value))

Calling this new type "just" sint / uint with no specific size
will hopefully also make people more comfortable with using it.
Currently telling people "don't use u8, you may need the bits,
and netlink will round up to 4B, anyway" is the #1 comment
we give to newcomers.

In terms of netlink layout it looks like this:

         0       4       8       12      16
32b:     [nlattr][ u32  ]
64b:     [  pad ][nlattr][     u64      ]
uint(32) [nlattr][ u32  ]
uint(64) [nlattr][     u64      ]

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-10-20 11:43:35 +01:00
Johannes Nixdorf ddd1ad6882 net: bridge: Add netlink knobs for number / max learned FDB entries
The previous patch added accounting and a limit for the number of
dynamically learned FDB entries per bridge. However it did not provide
means to actually configure those bounds or read back the count. This
patch does that.

Two new netlink attributes are added for the accounting and limit of
dynamically learned FDB entries:
 - IFLA_BR_FDB_N_LEARNED (RO) for the number of entries accounted for
   a single bridge.
 - IFLA_BR_FDB_MAX_LEARNED (RW) for the configured limit of entries for
   the bridge.

The new attributes are used like this:

 # ip link add name br up type bridge fdb_max_learned 256
 # ip link add name v1 up master br type veth peer v2
 # ip link set up dev v2
 # mausezahn -a rand -c 1024 v2
 0.01 seconds (90877 packets per second
 # bridge fdb | grep -v permanent | wc -l
 256
 # ip -d link show dev br
 13: br: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 [...]
     [...] fdb_n_learned 256 fdb_max_learned 256

Signed-off-by: Johannes Nixdorf <jnixdorf-oss@avm.de>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://lore.kernel.org/r/20231016-fdb_limit-v5-3-32cddff87758@avm.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-10-17 17:39:01 -07:00
Jakub Kicinski a3c2dd9648 bpf-next-for-netdev
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Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

Daniel Borkmann says:

====================
pull-request: bpf-next 2023-10-16

We've added 90 non-merge commits during the last 25 day(s) which contain
a total of 120 files changed, 3519 insertions(+), 895 deletions(-).

The main changes are:

1) Add missed stats for kprobes to retrieve the number of missed kprobe
   executions and subsequent executions of BPF programs, from Jiri Olsa.

2) Add cgroup BPF sockaddr hooks for unix sockets. The use case is
   for systemd to reimplement the LogNamespace feature which allows
   running multiple instances of systemd-journald to process the logs
   of different services, from Daan De Meyer.

3) Implement BPF CPUv4 support for s390x BPF JIT, from Ilya Leoshkevich.

4) Improve BPF verifier log output for scalar registers to better
   disambiguate their internal state wrt defaults vs min/max values
   matching, from Andrii Nakryiko.

5) Extend the BPF fib lookup helpers for IPv4/IPv6 to support retrieving
   the source IP address with a new BPF_FIB_LOOKUP_SRC flag,
   from Martynas Pumputis.

6) Add support for open-coded task_vma iterator to help with symbolization
   for BPF-collected user stacks, from Dave Marchevsky.

7) Add libbpf getters for accessing individual BPF ring buffers which
   is useful for polling them individually, for example, from Martin Kelly.

8) Extend AF_XDP selftests to validate the SHARED_UMEM feature,
   from Tushar Vyavahare.

9) Improve BPF selftests cross-building support for riscv arch,
   from Björn Töpel.

10) Add the ability to pin a BPF timer to the same calling CPU,
   from David Vernet.

11) Fix libbpf's bpf_tracing.h macros for riscv to use the generic
   implementation of PT_REGS_SYSCALL_REGS() to access syscall arguments,
   from Alexandre Ghiti.

12) Extend libbpf to support symbol versioning for uprobes, from Hengqi Chen.

13) Fix bpftool's skeleton code generation to guarantee that ELF data
    is 8 byte aligned, from Ian Rogers.

14) Inherit system-wide cpu_mitigations_off() setting for Spectre v1/v4
    security mitigations in BPF verifier, from Yafang Shao.

15) Annotate struct bpf_stack_map with __counted_by attribute to prepare
    BPF side for upcoming __counted_by compiler support, from Kees Cook.

* tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (90 commits)
  bpf: Ensure proper register state printing for cond jumps
  bpf: Disambiguate SCALAR register state output in verifier logs
  selftests/bpf: Make align selftests more robust
  selftests/bpf: Improve missed_kprobe_recursion test robustness
  selftests/bpf: Improve percpu_alloc test robustness
  selftests/bpf: Add tests for open-coded task_vma iter
  bpf: Introduce task_vma open-coded iterator kfuncs
  selftests/bpf: Rename bpf_iter_task_vma.c to bpf_iter_task_vmas.c
  bpf: Don't explicitly emit BTF for struct btf_iter_num
  bpf: Change syscall_nr type to int in struct syscall_tp_t
  net/bpf: Avoid unused "sin_addr_len" warning when CONFIG_CGROUP_BPF is not set
  bpf: Avoid unnecessary audit log for CPU security mitigations
  selftests/bpf: Add tests for cgroup unix socket address hooks
  selftests/bpf: Make sure mount directory exists
  documentation/bpf: Document cgroup unix socket address hooks
  bpftool: Add support for cgroup unix socket address hooks
  libbpf: Add support for cgroup unix socket address hooks
  bpf: Implement cgroup sockaddr hooks for unix sockets
  bpf: Add bpf_sock_addr_set_sun_path() to allow writing unix sockaddr from bpf
  bpf: Propagate modified uaddrlen from cgroup sockaddr programs
  ...
====================

Link: https://lore.kernel.org/r/20231016204803.30153-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-10-16 21:05:33 -07:00
Xabier Marquiegui c5a445b1e9 ptp: support event queue reader channel masks
On systems with multiple timestamp event channels, some readers might
want to receive only a subset of those channels.

Add the necessary modifications to support timestamp event channel
filtering, including two IOCTL operations:

- Clear all channels
- Enable one channel

The mask modification operations will be applied exclusively on the
event queue assigned to the file descriptor used on the IOCTL operation,
so the typical procedure to have a reader receiving only a subset of the
enabled channels would be:

- Open device file
- ioctl: clear all channels
- ioctl: enable one channel
- start reading

Calling the enable one channel ioctl more than once will result in
multiple enabled channels.

Signed-off-by: Xabier Marquiegui <reibax@gmail.com>
Suggested-by: Richard Cochran <richardcochran@gmail.com>
Suggested-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-10-15 20:07:52 +01:00
Arkadiusz Kubalewski c3c6ab95c3 dpll: spec: add support for pin-dpll signal phase offset/adjust
Add attributes for providing the user with:
- measurement of signals phase offset between pin and dpll
- ability to adjust the phase of pin signal

Signed-off-by: Arkadiusz Kubalewski <arkadiusz.kubalewski@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-10-15 16:08:24 +01:00
Arseniy Krasnov 49dbe25ada vsock: read from socket's error queue
This adds handling of MSG_ERRQUEUE input flag in receive call. This flag
is used to read socket's error queue instead of data queue. Possible
scenario of error queue usage is receiving completions for transmission
with MSG_ZEROCOPY flag. This patch also adds new defines: 'SOL_VSOCK'
and 'VSOCK_RECVERR'.

Signed-off-by: Arseniy Krasnov <avkrasnov@salutedevices.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-10-15 13:19:42 +01:00
Jakub Kicinski 0e6bb5b7f4 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR.

No conflicts.

Adjacent changes:

kernel/bpf/verifier.c
  829955981c ("bpf: Fix verifier log for async callback return values")
  a923819fb2 ("bpf: Treat first argument as return value for bpf_throw")

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-10-12 17:07:34 -07:00
Linus Torvalds e8c127b057 Including fixes from CAN and BPF.
Previous releases - regressions:
 
  - af_packet: fix fortified memcpy() without flex array.
 
  - tcp: fix crashes trying to free half-baked MTU probes
 
  - xdp: fix zero-size allocation warning in xskq_create()
 
  - can: sja1000: always restart the tx queue after an overrun
 
  - eth: mlx5e: again mutually exclude RX-FCS and RX-port-timestamp
 
  - eth: nfp: avoid rmmod nfp crash issues
 
  - eth: octeontx2-pf: fix page pool frag allocation warning
 
 Previous releases - always broken:
 
  - mctp: perform route lookups under a RCU read-side lock
 
  - bpf: s390: fix clobbering the caller's backchain in the trampoline
 
  - phy: lynx-28g: cancel the CDR check work item on the remove path
 
  - dsa: qca8k: fix qca8k driver for Turris 1.x
 
  - eth: ravb: fix use-after-free issue in ravb_tx_timeout_work()
 
  - eth: ixgbe: fix crash with empty VF macvlan list
 
 Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-6.6-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Paolo Abeni:
 "Including fixes from CAN and BPF.

  We have a regression in TC currently under investigation, otherwise
  the things that stand off most are probably the TCP and AF_PACKET
  fixes, with both issues coming from 6.5.

  Previous releases - regressions:

   - af_packet: fix fortified memcpy() without flex array.

   - tcp: fix crashes trying to free half-baked MTU probes

   - xdp: fix zero-size allocation warning in xskq_create()

   - can: sja1000: always restart the tx queue after an overrun

   - eth: mlx5e: again mutually exclude RX-FCS and RX-port-timestamp

   - eth: nfp: avoid rmmod nfp crash issues

   - eth: octeontx2-pf: fix page pool frag allocation warning

  Previous releases - always broken:

   - mctp: perform route lookups under a RCU read-side lock

   - bpf: s390: fix clobbering the caller's backchain in the trampoline

   - phy: lynx-28g: cancel the CDR check work item on the remove path

   - dsa: qca8k: fix qca8k driver for Turris 1.x

   - eth: ravb: fix use-after-free issue in ravb_tx_timeout_work()

   - eth: ixgbe: fix crash with empty VF macvlan list"

* tag 'net-6.6-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (54 commits)
  rswitch: Fix imbalance phy_power_off() calling
  rswitch: Fix renesas_eth_sw_remove() implementation
  octeontx2-pf: Fix page pool frag allocation warning
  nfc: nci: assert requested protocol is valid
  af_packet: Fix fortified memcpy() without flex array.
  net: tcp: fix crashes trying to free half-baked MTU probes
  net/smc: Fix pos miscalculation in statistics
  nfp: flower: avoid rmmod nfp crash issues
  net: usb: dm9601: fix uninitialized variable use in dm9601_mdio_read
  ethtool: Fix mod state of verbose no_mask bitset
  net: nfc: fix races in nfc_llcp_sock_get() and nfc_llcp_sock_get_sn()
  mctp: perform route lookups under a RCU read-side lock
  net: skbuff: fix kernel-doc typos
  s390/bpf: Fix unwinding past the trampoline
  s390/bpf: Fix clobbering the caller's backchain in the trampoline
  net/mlx5e: Again mutually exclude RX-FCS and RX-port-timestamp
  net/smc: Fix dependency of SMC on ISM
  ixgbe: fix crash with empty VF macvlan list
  net/mlx5e: macsec: use update_pn flag instead of PN comparation
  net: phy: mscc: macsec: reject PN update requests
  ...
2023-10-12 13:07:00 -07:00
Kuniyuki Iwashima e2bca4870f af_packet: Fix fortified memcpy() without flex array.
Sergei Trofimovich reported a regression [0] caused by commit a0ade8404c
("af_packet: Fix warning of fortified memcpy() in packet_getname().").

It introduced a flex array sll_addr_flex in struct sockaddr_ll as a
union-ed member with sll_addr to work around the fortified memcpy() check.

However, a userspace program uses a struct that has struct sockaddr_ll in
the middle, where a flex array is illegal to exist.

  include/linux/if_packet.h:24:17: error: flexible array member 'sockaddr_ll::<unnamed union>::<unnamed struct>::sll_addr_flex' not at end of 'struct packet_info_t'
     24 |                 __DECLARE_FLEX_ARRAY(unsigned char, sll_addr_flex);
        |                 ^~~~~~~~~~~~~~~~~~~~

To fix the regression, let's go back to the first attempt [1] telling
memcpy() the actual size of the array.

Reported-by: Sergei Trofimovich <slyich@gmail.com>
Closes: https://github.com/NixOS/nixpkgs/pull/252587#issuecomment-1741733002 [0]
Link: https://lore.kernel.org/netdev/20230720004410.87588-3-kuniyu@amazon.com/ [1]
Fixes: a0ade8404c ("af_packet: Fix warning of fortified memcpy() in packet_getname().")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://lore.kernel.org/r/20231009153151.75688-1-kuniyu@amazon.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-10-12 09:15:15 +02:00
Daan De Meyer 859051dd16 bpf: Implement cgroup sockaddr hooks for unix sockets
These hooks allows intercepting connect(), getsockname(),
getpeername(), sendmsg() and recvmsg() for unix sockets. The unix
socket hooks get write access to the address length because the
address length is not fixed when dealing with unix sockets and
needs to be modified when a unix socket address is modified by
the hook. Because abstract socket unix addresses start with a
NUL byte, we cannot recalculate the socket address in kernelspace
after running the hook by calculating the length of the unix socket
path using strlen().

These hooks can be used when users want to multiplex syscall to a
single unix socket to multiple different processes behind the scenes
by redirecting the connect() and other syscalls to process specific
sockets.

We do not implement support for intercepting bind() because when
using bind() with unix sockets with a pathname address, this creates
an inode in the filesystem which must be cleaned up. If we rewrite
the address, the user might try to clean up the wrong file, leaking
the socket in the filesystem where it is never cleaned up. Until we
figure out a solution for this (and a use case for intercepting bind()),
we opt to not allow rewriting the sockaddr in bind() calls.

We also implement recvmsg() support for connected streams so that
after a connect() that is modified by a sockaddr hook, any corresponding
recmvsg() on the connected socket can also be modified to make the
connected program think it is connected to the "intended" remote.

Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: Daan De Meyer <daan.j.demeyer@gmail.com>
Link: https://lore.kernel.org/r/20231011185113.140426-5-daan.j.demeyer@gmail.com
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
2023-10-11 17:27:47 -07:00
Martynas Pumputis dab4e1f06c bpf: Derive source IP addr via bpf_*_fib_lookup()
Extend the bpf_fib_lookup() helper by making it to return the source
IPv4/IPv6 address if the BPF_FIB_LOOKUP_SRC flag is set.

For example, the following snippet can be used to derive the desired
source IP address:

    struct bpf_fib_lookup p = { .ipv4_dst = ip4->daddr };

    ret = bpf_skb_fib_lookup(skb, p, sizeof(p),
            BPF_FIB_LOOKUP_SRC | BPF_FIB_LOOKUP_SKIP_NEIGH);
    if (ret != BPF_FIB_LKUP_RET_SUCCESS)
        return TC_ACT_SHOT;

    /* the p.ipv4_src now contains the source address */

The inability to derive the proper source address may cause malfunctions
in BPF-based dataplanes for hosts containing netdevs with more than one
routable IP address or for multi-homed hosts.

For example, Cilium implements packet masquerading in BPF. If an
egressing netdev to which the Cilium's BPF prog is attached has
multiple IP addresses, then only one [hardcoded] IP address can be used for
masquerading. This breaks connectivity if any other IP address should have
been selected instead, for example, when a public and private addresses
are attached to the same egress interface.

The change was tested with Cilium [1].

Nikolay Aleksandrov helped to figure out the IPv6 addr selection.

[1]: https://github.com/cilium/cilium/pull/28283

Signed-off-by: Martynas Pumputis <m@lambda.lt>
Link: https://lore.kernel.org/r/20231007081415.33502-2-m@lambda.lt
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
2023-10-09 16:28:35 -07:00
David Vernet d6247ecb6c bpf: Add ability to pin bpf timer to calling CPU
BPF supports creating high resolution timers using bpf_timer_* helper
functions. Currently, only the BPF_F_TIMER_ABS flag is supported, which
specifies that the timeout should be interpreted as absolute time. It
would also be useful to be able to pin that timer to a core. For
example, if you wanted to make a subset of cores run without timer
interrupts, and only have the timer be invoked on a single core.

This patch adds support for this with a new BPF_F_TIMER_CPU_PIN flag.
When specified, the HRTIMER_MODE_PINNED flag is passed to
hrtimer_start(). A subsequent patch will update selftests to validate.

Signed-off-by: David Vernet <void@manifault.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Song Liu <song@kernel.org>
Acked-by: Hou Tao <houtao1@huawei.com>
Link: https://lore.kernel.org/bpf/20231004162339.200702-2-void@manifault.com
2023-10-09 16:28:49 +02:00
Jakub Kicinski a1fb841f9d wireless-next patches for v6.7
The first pull request for v6.7, with both stack and driver changes.
 We have a big change how locking is handled in cfg80211 and mac80211
 which removes several locks and hopefully simplifies the locking
 overall. In drivers rtw89 got MCC support and smaller features to
 other active drivers but nothing out of ordinary.
 
 This pull request got delayed because we were waiting for the wireless
 tree pull requested processed first and after that we merged wireless
 into wireless-next to avoid several conflicts in the stack.
 
 When pulling this there's one conflict in drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c:
 
 <<<<<<< HEAD
 static int cfg80211_rtw_change_beacon(struct wiphy *wiphy,
 				      struct net_device *ndev,
 				      struct cfg80211_beacon_data *info)
 =======
 static int cfg80211_rtw_change_beacon(struct wiphy *wiphy, struct net_device *ndev,
 		struct cfg80211_ap_update *info)
 >>>>>>> origin/merge-wireless-2023-10-05
 
 Take the latter hunk which uses struct cfg80211_ap_update.
 
 Major changes:
 
 cfg80211
 
 * remove wdev mutex, use the wiphy mutex instead
 
 * annotate iftype_data pointer with sparse
 
 * first kunit tests, for element defrag
 
 * remove unused scan_width support
 
 mac80211
 
 * major locking rework, remove several locks like sta_mtx, key_mtx
   etc. and use the wiphy mutex instead
 
 * remove unused shifted rate support
 
 * support antenna control in frame injection (requires driver support)
 
 * convert RX_DROP_UNUSABLE to more detailed reason codes
 
 rtw89
 
 * TDMA-based multi-channel concurrency (MCC) support
 
 iwlwifi
 
 * support set_antenna() operation
 
 * support frame injection antenna control
 
 ath12k
 
 * WCN7850: enable 320 MHz channels in 6 GHz band
 
 * WCN7850: hardware rfkill support
 
 * WCN7850: enable IEEE80211_HW_SINGLE_SCAN_ON_ALL_BANDS to make scan faster
 
 ath11k
 
 * add chip id board name while searching board-2.bin
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Merge tag 'wireless-next-2023-10-06' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next

Kalle Valo says:

====================
wireless-next patches for v6.7

The first pull request for v6.7, with both stack and driver changes.
We have a big change how locking is handled in cfg80211 and mac80211
which removes several locks and hopefully simplifies the locking
overall. In drivers rtw89 got MCC support and smaller features to
other active drivers but nothing out of ordinary.

Major changes:

cfg80211
 - remove wdev mutex, use the wiphy mutex instead
 - annotate iftype_data pointer with sparse
 - first kunit tests, for element defrag
 - remove unused scan_width support

mac80211
 - major locking rework, remove several locks like sta_mtx, key_mtx
   etc. and use the wiphy mutex instead
 - remove unused shifted rate support
 - support antenna control in frame injection (requires driver support)
 - convert RX_DROP_UNUSABLE to more detailed reason codes

rtw89
 - TDMA-based multi-channel concurrency (MCC) support

iwlwifi
 - support set_antenna() operation
 - support frame injection antenna control

ath12k
 - WCN7850: enable 320 MHz channels in 6 GHz band
 - WCN7850: hardware rfkill support
 - WCN7850: enable IEEE80211_HW_SINGLE_SCAN_ON_ALL_BANDS to make scan faster

ath11k
 - add chip id board name while searching board-2.bin

* tag 'wireless-next-2023-10-06' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next: (272 commits)
  wifi: rtlwifi: remove unreachable code in rtl92d_dm_check_edca_turbo()
  wifi: rtw89: debug: txpwr table supports Wi-Fi 7 chips
  wifi: rtw89: debug: show txpwr table according to chip gen
  wifi: rtw89: phy: set TX power RU limit according to chip gen
  wifi: rtw89: phy: set TX power limit according to chip gen
  wifi: rtw89: phy: set TX power offset according to chip gen
  wifi: rtw89: phy: set TX power by rate according to chip gen
  wifi: rtw89: mac: get TX power control register according to chip gen
  wifi: rtlwifi: use unsigned long for rtl_bssid_entry timestamp
  wifi: rtlwifi: fix EDCA limit set by BT coexistence
  wifi: rt2x00: fix MT7620 low RSSI issue
  wifi: rtw89: refine bandwidth 160MHz uplink OFDMA performance
  wifi: rtw89: refine uplink trigger based control mechanism
  wifi: rtw89: 8851b: update TX power tables to R34
  wifi: rtw89: 8852b: update TX power tables to R35
  wifi: rtw89: 8852c: update TX power tables to R67
  wifi: rtw89: regd: configure Thailand in regulation type
  wifi: mac80211: add back SPDX identifier
  wifi: mac80211: fix ieee80211_drop_unencrypted_mgmt return type/value
  wifi: rtlwifi: cleanup few rtlxxxx_set_hw_reg() routines
  ...

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

Link: https://lore.kernel.org/r/87jzrz6bvw.fsf@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-10-06 16:07:29 -07:00
Johannes Berg 7d6904bf26 Merge wireless into wireless-next
Resolve several conflicts, mostly between changes/fixes in
wireless and the locking rework in wireless-next. One of
the conflicts actually shows a bug in wireless that we'll
want to fix separately.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
2023-10-06 17:08:47 +03:00
Dave Airlie 67f35a41d3 Short summary of fixes pull:
* test: Fix kunit release
  * panel-orientation: Add quirk for One Mix 25
  * nouveau:
    * Report IB limit via getparams
    * Replace some magic numbers with constants
    * Clean up
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Merge tag 'drm-misc-fixes-2023-10-05' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes

Short summary of fixes pull:

 * test: Fix kunit release
 * panel-orientation: Add quirk for One Mix 25
 * nouveau:
   * Report IB limit via getparams
   * Replace some magic numbers with constants
   * Clean up

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20231005092632.GA17332@linux-uq9g
2023-10-06 12:48:06 +10:00
Jakub Kicinski 2606cf059c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR.

No conflicts (or adjacent changes of note).

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-10-05 13:16:47 -07:00
Eric Dumazet 49e7265fd0 net_sched: sch_fq: add TCA_FQ_WEIGHTS attribute
This attribute can be used to tune the per band weight
and report them in "tc qdisc show" output:

qdisc fq 802f: parent 1:9 limit 100000p flow_limit 500p buckets 1024 orphan_mask 1023
 quantum 8364b initial_quantum 41820b low_rate_threshold 550Kbit
 refill_delay 40ms timer_slack 10us horizon 10s horizon_drop
 bands 3 priomap 1 2 2 2 1 2 0 0 1 1 1 1 1 1 1 1 weights 589824 196608 65536
 Sent 236460814 bytes 792991 pkt (dropped 0, overlimits 0 requeues 0)
 rate 25816bit 10pps backlog 0b 0p requeues 0
  flows 4 (inactive 4 throttled 0)
  gc 0 throttled 19 latency 17.6us fastpath 773882

Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Dave Taht <dave.taht@gmail.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Reviewed-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-10-05 13:27:46 +02:00
Eric Dumazet 29f834aa32 net_sched: sch_fq: add 3 bands and WRR scheduling
Before Google adopted FQ for its production servers,
we had to ensure AF4 packets would get a higher share
than BE1 ones.

As discussed this week in Netconf 2023 in Paris, it is time
to upstream this for public use.

After this patch FQ can replace pfifo_fast, with the following
differences :

- FQ uses WRR instead of strict prio, to avoid starvation of
  low priority packets.

- We make sure each band/prio tracks its own usage against sch->limit.
  This was done to make sure flood of low priority packets would not
  prevent AF4 packets to be queued. Contributed by Willem.

- priomap can be changed, if needed (default value are the ones
  coming from pfifo_fast).

In this patch, we set default band weights so that :

- high prio (band=0) packets get 90% of the bandwidth
  if they compete with low prio (band=2) packets.

- high prio packets get 75% of the bandwidth
  if they compete with medium prio (band=1) packets.

Following patch in this series adds the possibility to tune
the per-band weights.

As we added many fields in 'struct fq_sched_data', we had
to make sure to have the first cache line read-mostly, and
avoid wasting precious cache lines.

More optimizations are possible but will be sent separately.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Dave Taht <dave.taht@gmail.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Reviewed-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-10-05 13:27:39 +02:00
Danilo Krummrich d59e75eef5 drm/nouveau: exec: report max pushs through getparam
Report the maximum number of IBs that can be pushed with a single
DRM_IOCTL_NOUVEAU_EXEC through DRM_IOCTL_NOUVEAU_GETPARAM.

While the maximum number of IBs per ring might vary between chipsets,
the kernel will make sure that userspace can only push a fraction of the
maximum number of IBs per ring per job, such that we avoid a situation
where there's only a single job occupying the ring, which could
potentially lead to the ring run dry.

Using DRM_IOCTL_NOUVEAU_GETPARAM to report the maximum number of IBs
that can be pushed with a single DRM_IOCTL_NOUVEAU_EXEC implies that
all channels of a given device have the same ring size.

Reviewed-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Acked-by: Faith Ekstrand <faith.ekstrand@collabora.com>
Signed-off-by: Danilo Krummrich <dakr@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231002135008.10651-3-dakr@redhat.com
2023-10-04 00:10:18 +02:00
Eric Dumazet 076433bd78 net_sched: sch_fq: add fast path for mostly idle qdisc
TCQ_F_CAN_BYPASS can be used by few qdiscs.

Idea is that if we queue a packet to an empty qdisc,
following dequeue() would pick it immediately.

FQ can not use the generic TCQ_F_CAN_BYPASS code,
because some additional checks need to be performed.

This patch adds a similar fast path to FQ.

Most of the time, qdisc is not throttled,
and many packets can avoid bringing/touching
at least four cache lines, and consuming 128bytes
of memory to store the state of a flow.

After this patch, netperf can send UDP packets about 13 % faster,
and pktgen goes 30 % faster (when FQ is in the way), on a fast NIC.

TCP traffic is also improved, thanks to a reduction of cache line misses.
I have measured a 5 % increase of throughput on a tcp_rr intensive workload.

tc -s -d qd sh dev eth1
...
qdisc fq 8004: parent 1:2 limit 10000p flow_limit 100p buckets 1024
   orphan_mask 1023 quantum 3028b initial_quantum 15140b low_rate_threshold 550Kbit
   refill_delay 40ms timer_slack 10us horizon 10s horizon_drop
 Sent 5646784384 bytes 1985161 pkt (dropped 0, overlimits 0 requeues 0)
 backlog 0b 0p requeues 0
  flows 122 (inactive 122 throttled 0)
  gc 0 highprio 0 fastpath 659990 throttled 27762 latency 8.57us

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-10-01 13:20:36 +01:00
Jiri Olsa 3acf8ace68 bpf: Add missed value to kprobe perf link info
Add missed value to kprobe attached through perf link info to
hold the stats of missed kprobe handler execution.

The kprobe's missed counter gets incremented when kprobe handler
is not executed due to another kprobe running on the same cpu.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20230920213145.1941596-4-jolsa@kernel.org
2023-09-25 16:37:44 -07:00
Jiri Olsa e2b2cd592a bpf: Add missed value to kprobe_multi link info
Add missed value to kprobe_multi link info to hold the stats of missed
kprobe_multi probe.

The missed counter gets incremented when fprobe fails the recursion
check or there's no rethook available for return probe. In either
case the attached bpf program is not executed.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Tested-by: Song Liu <song@kernel.org>
Reviewed-by: Song Liu <song@kernel.org>
Acked-by: Hou Tao <houtao1@huawei.com>
Link: https://lore.kernel.org/bpf/20230920213145.1941596-3-jolsa@kernel.org
2023-09-25 16:37:44 -07:00
Vinayak Yadawad 5482c0a28b wifi: cfg80211: OWE DH IE handling offload
Introduce new feature flags for OWE offload that driver can
advertise to indicate kernel/application space to avoid DH IE
handling. When this flag is advertised, the driver/device will
take care of DH IE inclusion and processing of peer DH IE to
generate PMK.

Signed-off-by: Vinayak Yadawad <vinayak.yadawad@broadcom.com>
Link: https://lore.kernel.org/r/f891cce4b52c939dfc6b71bb2f73e560e8cad287.1695374530.git.vinayak.yadawad@broadcom.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2023-09-25 10:56:50 +02:00
Linus Torvalds d90b0276af hardening fixes for v6.6-rc3
- Fix UAPI stddef.h to avoid C++-ism (Alexey Dobriyan)
 
 - Fix harmless UAPI stddef.h header guard endif (Alexey Dobriyan)
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Merge tag 'hardening-v6.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull hardening fixes from Kees Cook:

 - Fix UAPI stddef.h to avoid C++-ism (Alexey Dobriyan)

 - Fix harmless UAPI stddef.h header guard endif (Alexey Dobriyan)

* tag 'hardening-v6.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  uapi: stddef.h: Fix __DECLARE_FLEX_ARRAY for C++
  uapi: stddef.h: Fix header guard location
2023-09-22 16:46:55 -07:00
Paolo Abeni e9cbc89067 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR.

No conflicts.

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-09-21 21:49:45 +02:00
Wen Gong ddd7f45c89 wifi: cfg80211: save power spectral density(psd) of regulatory rule
6 GHz regulatory domains introduces Power Spectral Density (PSD).
The PSD value of the regulatory rule should be taken into effect
for the ieee80211_channels falling into that particular regulatory
rule. Save the values in the channel which has PSD value and add
nl80211 attributes accordingly to handle it.

Co-developed-by: Aditya Kumar Singh <quic_adisi@quicinc.com>
Signed-off-by: Aditya Kumar Singh <quic_adisi@quicinc.com>
Signed-off-by: Wen Gong <quic_wgong@quicinc.com>
Link: https://lore.kernel.org/r/20230914082026.3709-1-quic_wgong@quicinc.com
[use hole in chan flags, reword docs]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2023-09-18 09:44:05 +02:00
David S. Miller 685c6d5b2c Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Alexei Starovoitov says:

====================
The following pull-request contains BPF updates for your *net-next* tree.

We've added 73 non-merge commits during the last 9 day(s) which contain
a total of 79 files changed, 5275 insertions(+), 600 deletions(-).

The main changes are:

1) Basic BTF validation in libbpf, from Andrii Nakryiko.

2) bpf_assert(), bpf_throw(), exceptions in bpf progs, from Kumar Kartikeya Dwivedi.

3) next_thread cleanups, from Oleg Nesterov.

4) Add mcpu=v4 support to arm32, from Puranjay Mohan.

5) Add support for __percpu pointers in bpf progs, from Yonghong Song.

6) Fix bpf tailcall interaction with bpf trampoline, from Leon Hwang.

7) Raise irq_work in bpf_mem_alloc while irqs are disabled to improve refill probabablity, from Hou Tao.

Please consider pulling these changes from:

  git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git

Thanks a lot!

Also thanks to reporters, reviewers and testers of commits in this pull-request:

Alan Maguire, Andrey Konovalov, Dave Marchevsky, "Eric W. Biederman",
Jiri Olsa, Maciej Fijalkowski, Quentin Monnet, Russell King (Oracle),
Song Liu, Stanislav Fomichev, Yonghong Song
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2023-09-17 15:12:06 +01:00
Jiri Pirko 0b7a2721e3 devlink: expose peer SF devlink instance
Introduce a new helper devl_port_fn_devlink_set() to be used by driver
assigning a devlink instance to the peer devlink port function.

Expose this to user over new netlink attribute nested under port
function nest to expose devlink handle related to the port function.

This is particularly helpful for user to understand the relationship
between devlink instances created for SFs and the port functions
they belong to.

Note that caller of devlink_port_notify() needs to hold devlink
instance lock, put the assertion to devl_port_fn_devlink_set() to make
this requirement explicit. Also note the limitations that only allow to
make this assignment for registered objects.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-09-17 14:01:47 +01:00
Jiri Pirko 5f18426928 netdev: expose DPLL pin handle for netdevice
In case netdevice represents a SyncE port, the user needs to understand
the connection between netdevice and associated DPLL pin. There might me
multiple netdevices pointing to the same pin, in case of VF/SF
implementation.

Add a IFLA Netlink attribute to nest the DPLL pin handle, similar to
how it is implemented for devlink port. Add a struct dpll_pin pointer
to netdev and protect access to it by RTNL. Expose netdev_dpll_pin_set()
and netdev_dpll_pin_clear() helpers to the drivers so they can set/clear
the DPLL pin relationship to netdev.

Note that during the lifetime of struct dpll_pin the pin handle does not
change. Therefore it is save to access it lockless. It is drivers
responsibility to call netdev_dpll_pin_clear() before dpll_pin_put().

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Arkadiusz Kubalewski <arkadiusz.kubalewski@intel.com>
Signed-off-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-09-17 11:50:20 +01:00
Vadim Fedorenko 3badff3a25 dpll: spec: Add Netlink spec in YAML
Add a protocol spec for DPLL.
Add code generated from the spec.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Michal Michalik <michal.michalik@intel.com>
Signed-off-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Signed-off-by: Arkadiusz Kubalewski <arkadiusz.kubalewski@intel.com>
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-09-17 11:50:20 +01:00
Aananth V 3868ab0f19 tcp: new TCP_INFO stats for RTO events
The 2023 SIGCOMM paper "Improving Network Availability with Protective
ReRoute" has indicated Linux TCP's RTO-triggered txhash rehashing can
effectively reduce application disruption during outages. To better
measure the efficacy of this feature, this patch adds three more
detailed stats during RTO recovery and exports via TCP_INFO.
Applications and monitoring systems can leverage this data to measure
the network path diversity and end-to-end repair latency during network
outages to improve their network infrastructure.

The following counters are added to tcp_sock in order to track RTO
events over the lifetime of a TCP socket.

1. u16 total_rto - Counts the total number of RTO timeouts.
2. u16 total_rto_recoveries - Counts the total number of RTO recoveries.
3. u32 total_rto_time - Counts the total time spent (ms) in RTO
                        recoveries. (time spent in CA_Loss and
                        CA_Recovery states)

To compute total_rto_time, we add a new u32 rto_stamp field to
tcp_sock. rto_stamp records the start timestamp (ms) of the last RTO
recovery (CA_Loss).

Corresponding fields are also added to the tcp_info struct.

Signed-off-by: Aananth V <aananthv@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-09-16 13:42:34 +01:00
David S. Miller 1612cc4b14 Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Alexei Starovoitov says:

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

The following pull-request contains BPF updates for your *net* tree.

We've added 21 non-merge commits during the last 8 day(s) which contain
a total of 21 files changed, 450 insertions(+), 36 deletions(-).

The main changes are:

1) Adjust bpf_mem_alloc buckets to match ksize(), from Hou Tao.

2) Check whether override is allowed in kprobe mult, from Jiri Olsa.

3) Fix btf_id symbol generation with ld.lld, from Jiri and Nick.

4) Fix potential deadlock when using queue and stack maps from NMI, from Toke Høiland-Jørgensen.

Please consider pulling these changes from:

  git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git

Thanks a lot!

Also thanks to reporters, reviewers and testers of commits in this pull-request:

Alan Maguire, Biju Das, Björn Töpel, Dan Carpenter, Daniel Borkmann,
Eduard Zingerman, Hsin-Wei Hung, Marcus Seyfarth, Nathan Chancellor,
Satya Durga Srinivasu Prabhala, Song Liu, Stephen Rothwell
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2023-09-16 11:16:00 +01:00
Stanislav Fomichev a9c2a60854 bpf: expose information about supported xdp metadata kfunc
Add new xdp-rx-metadata-features member to netdev netlink
which exports a bitmask of supported kfuncs. Most of the patch
is autogenerated (headers), the only relevant part is netdev.yaml
and the changes in netdev-genl.c to marshal into netlink.

Example output on veth:

$ ip link add veth0 type veth peer name veth1 # ifndex == 12
$ ./tools/net/ynl/samples/netdev 12

Select ifc ($ifindex; or 0 = dump; or -2 ntf check): 12
   veth1[12]    xdp-features (23): basic redirect rx-sg xdp-rx-metadata-features (3): timestamp hash xdp-zc-max-segs=0

Cc: netdev@vger.kernel.org
Cc: Willem de Bruijn <willemb@google.com>
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Link: https://lore.kernel.org/r/20230913171350.369987-3-sdf@google.com
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
2023-09-15 11:26:58 -07:00
Alexey Dobriyan 32a4ec211d uapi: stddef.h: Fix __DECLARE_FLEX_ARRAY for C++
__DECLARE_FLEX_ARRAY(T, member) macro expands to

	struct {
		struct {} __empty_member;
		T member[];
	};

which is subtly wrong in C++ because sizeof(struct{}) is 1 not 0,
changing UAPI structures layouts.

This can be fixed by expanding to

	T member[];

Now g++ doesn't like "T member[]" either, throwing errors on
the following code:

	struct S {
		union {
			T1 member1[];
			T2 member2[];
		};
	};

or

	struct S {
		T member[];
	};

Use "T member[0];" which seems to work and does the right thing wrt
structure layout.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Fixes: 3080ea5553 ("stddef: Introduce DECLARE_FLEX_ARRAY() helper")
Link: https://lore.kernel.org/r/97242381-f1ec-4a4a-9472-1a464f575657@p183
Signed-off-by: Kees Cook <keescook@chromium.org>
2023-09-13 20:09:49 -07:00
Alexey Dobriyan 531108ec5b uapi: stddef.h: Fix header guard location
The #endif for the header guard wasn't at the end of the header. This
was harmless since the define that escaped was already testing for its
own redefinition. Regardless, move the #endif to the correct place.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Fixes: c8248faf3c ("Compiler Attributes: counted_by: Adjust name and identifier expansion")
Link: https://lore.kernel.org/r/b1f5081e-339d-421d-81b2-cbb94e1f6f5f@p183
Co-developed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
2023-09-13 20:08:52 -07:00
Aloka Dixit 0cfaec2599 wifi: nl80211: fixes to FILS discovery updates
Add a new flag 'update' which is set to true during start_ap()
if (and only if) one of the following two conditions are met:
- Userspace passed an empty nested attribute which indicates that
  the feature should be disabled and templates deleted.
- Userspace passed all the parameters for the nested attribute.

Existing configuration will not be changed while the flag
remains false.

Add similar changes for unsolicited broadcast probe response
transmission.

Signed-off-by: Aloka Dixit <quic_alokad@quicinc.com>
Reviewed-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Link: https://lore.kernel.org/r/20230727174100.11721-2-quic_alokad@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2023-09-13 12:34:00 +02:00
Johannes Berg 5add321c32 wifi: cfg80211: remove scan_width support
There really isn't any support for scanning at different
channel widths than 20 MHz since there's no way to set it.
Remove this support for now, if somebody wants to maintain
this whole thing later we can revisit how it should work.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2023-09-13 11:10:50 +02:00
Stanislav Fomichev 7cb779a686 bpf: Clarify error expectations from bpf_clone_redirect
Commit 151e887d8f ("veth: Fixing transmit return status for dropped
packets") exposed the fact that bpf_clone_redirect is capable of
returning raw NET_XMIT_XXX return codes.

This is in the conflict with its UAPI doc which says the following:
"0 on success, or a negative error in case of failure."

Update the UAPI to reflect the fact that bpf_clone_redirect can
return positive error numbers, but don't explicitly define
their meaning.

Reported-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20230911194731.286342-1-sdf@google.com
2023-09-11 22:29:19 +02:00
Linus Torvalds 1b37a0a2d4 RISC-V Patches for the 6.6 Merge Window, Part 2 (try 2)
* The kernel now dynamically probes for misaligned access speed, as
   opposed to relying on a table of known implementations.
 * Support for non-coherent devices on systems using the Andes AX45MP
   core, including the RZ/Five SoCs.
 * Support for the V extension in ptrace(), again.
 * Support for KASLR.
 * Support for the BPF prog pack allocator in RISC-V.
 * A handful of bug fixes and cleanups.
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Merge tag 'riscv-for-linus-6.6-mw2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

Pull more RISC-V updates from Palmer Dabbelt:

 - The kernel now dynamically probes for misaligned access speed, as
   opposed to relying on a table of known implementations.

 - Support for non-coherent devices on systems using the Andes AX45MP
   core, including the RZ/Five SoCs.

 - Support for the V extension in ptrace(), again.

 - Support for KASLR.

 - Support for the BPF prog pack allocator in RISC-V.

 - A handful of bug fixes and cleanups.

* tag 'riscv-for-linus-6.6-mw2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (25 commits)
  soc: renesas: Kconfig: For ARCH_R9A07G043 select the required configs if dependencies are met
  riscv: Kconfig.errata: Add dependency for RISCV_SBI in ERRATA_ANDES config
  riscv: Kconfig.errata: Drop dependency for MMU in ERRATA_ANDES_CMO config
  riscv: Kconfig: Select DMA_DIRECT_REMAP only if MMU is enabled
  bpf, riscv: use prog pack allocator in the BPF JIT
  riscv: implement a memset like function for text
  riscv: extend patch_text_nosync() for multiple pages
  bpf: make bpf_prog_pack allocator portable
  riscv: libstub: Implement KASLR by using generic functions
  libstub: Fix compilation warning for rv32
  arm64: libstub: Move KASLR handling functions to kaslr.c
  riscv: Dump out kernel offset information on panic
  riscv: Introduce virtual kernel mapping KASLR
  RISC-V: Add ptrace support for vectors
  soc: renesas: Kconfig: Select the required configs for RZ/Five SoC
  cache: Add L2 cache management for Andes AX45MP RISC-V core
  dt-bindings: cache: andestech,ax45mp-cache: Add DT binding documentation for L2 cache controller
  riscv: mm: dma-noncoherent: nonstandard cache operations support
  riscv: errata: Add Andes alternative ports
  riscv: asm: vendorid_list: Add Andes Technology to the vendors list
  ...
2023-09-09 14:25:11 -07:00
Linus Torvalds 2a5a4326e5 SCSI misc on 20230909
Mostly small stragglers that missed the initial merge.  Driver updates
 are qla2xxx and smartpqi (mp3sas has a high diffstat due to the
 volatile qualifier removal, fnic due to unused function removal and
 sd.c has a lot of code shuffling to remove forward declarations).
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull more SCSI updates from James Bottomley:
 "Mostly small stragglers that missed the initial merge.

  Driver updates are qla2xxx and smartpqi (mp3sas has a high diffstat
  due to the volatile qualifier removal, fnic due to unused function
  removal and sd.c has a lot of code shuffling to remove forward
  declarations)"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (38 commits)
  scsi: ufs: core: No need to update UPIU.header.flags and lun in advanced RPMB handler
  scsi: ufs: core: Add advanced RPMB support where UFSHCI 4.0 does not support EHS length in UTRD
  scsi: mpt3sas: Remove volatile qualifier
  scsi: mpt3sas: Perform additional retries if doorbell read returns 0
  scsi: libsas: Simplify sas_queue_reset() and remove unused code
  scsi: ufs: Fix the build for the old ARM OABI
  scsi: qla2xxx: Fix unused variable warning in qla2xxx_process_purls_pkt()
  scsi: fnic: Remove unused functions fnic_scsi_host_start/end_tag()
  scsi: qla2xxx: Fix spelling mistake "tranport" -> "transport"
  scsi: fnic: Replace sgreset tag with max_tag_id
  scsi: qla2xxx: Remove unused variables in qla24xx_build_scsi_type_6_iocbs()
  scsi: qla2xxx: Fix nvme_fc_rcv_ls_req() undefined error
  scsi: smartpqi: Change driver version to 2.1.24-046
  scsi: smartpqi: Enhance error messages
  scsi: smartpqi: Enhance controller offline notification
  scsi: smartpqi: Enhance shutdown notification
  scsi: smartpqi: Simplify lun_number assignment
  scsi: smartpqi: Rename pciinfo to pci_info
  scsi: smartpqi: Rename MACRO to clarify purpose
  scsi: smartpqi: Add abort handler
  ...
2023-09-09 12:01:33 -07:00
Palmer Dabbelt f093636354
Merge patch "RISC-V: Add ptrace support for vectors"
This resurrects the vector ptrace() support that was removed for 6.5 due
to some bugs cropping up as part of the GDB review process.

* b4-shazam-merge:
  RISC-V: Add ptrace support for vectors

Link: https://lore.kernel.org/r/20230825050248.32681-1-andy.chiu@sifive.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2023-09-08 11:24:38 -07:00
Yonghong Song 9bc95a95ab bpf: Mark BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE deprecated
Now 'BPF_MAP_TYPE_CGRP_STORAGE + local percpu ptr'
can cover all BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE functionality
and more. So mark BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE deprecated.
Also make changes in selftests/bpf/test_bpftool_synctypes.py
and selftest libbpf_str to fix otherwise test errors.

Signed-off-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20230827152837.2003563-1-yonghong.song@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2023-09-08 08:42:18 -07:00
Linus Torvalds 73be7fb14e Including fixes from netfilter and bpf.
Current release - regressions:
 
  - eth: stmmac: fix failure to probe without MAC interface specified
 
 Current release - new code bugs:
 
  - docs: netlink: fix missing classic_netlink doc reference
 
 Previous releases - regressions:
 
  - deal with integer overflows in kmalloc_reserve()
 
  - use sk_forward_alloc_get() in sk_get_meminfo()
 
  - bpf_sk_storage: fix the missing uncharge in sk_omem_alloc
 
  - fib: avoid warn splat in flow dissector after packet mangling
 
  - skb_segment: call zero copy functions before using skbuff frags
 
  - eth: sfc: check for zero length in EF10 RX prefix
 
 Previous releases - always broken:
 
  - af_unix: fix msg_controllen test in scm_pidfd_recv() for
    MSG_CMSG_COMPAT
 
  - xsk: fix xsk_build_skb() dereferencing possible ERR_PTR()
 
  - netfilter:
    - nft_exthdr: fix non-linear header modification
    - xt_u32, xt_sctp: validate user space input
    - nftables: exthdr: fix 4-byte stack OOB write
    - nfnetlink_osf: avoid OOB read
    - one more fix for the garbage collection work from last release
 
  - igmp: limit igmpv3_newpack() packet size to IP_MAX_MTU
 
  - bpf, sockmap: fix preempt_rt splat when using raw_spin_lock_t
 
  - handshake: fix null-deref in handshake_nl_done_doit()
 
  - ip: ignore dst hint for multipath routes to ensure packets
    are hashed across the nexthops
 
  - phy: micrel:
    - correct bit assignments for cable test errata
    - disable EEE according to the KSZ9477 errata
 
 Misc:
 
  - docs/bpf: document compile-once-run-everywhere (CO-RE) relocations
 
  - Revert "net: macsec: preserve ingress frame ordering", it appears
    to have been developed against an older kernel, problem doesn't
    exist upstream
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking updates from Jakub Kicinski:
 "Including fixes from netfilter and bpf.

  Current release - regressions:

   - eth: stmmac: fix failure to probe without MAC interface specified

  Current release - new code bugs:

   - docs: netlink: fix missing classic_netlink doc reference

  Previous releases - regressions:

   - deal with integer overflows in kmalloc_reserve()

   - use sk_forward_alloc_get() in sk_get_meminfo()

   - bpf_sk_storage: fix the missing uncharge in sk_omem_alloc

   - fib: avoid warn splat in flow dissector after packet mangling

   - skb_segment: call zero copy functions before using skbuff frags

   - eth: sfc: check for zero length in EF10 RX prefix

  Previous releases - always broken:

   - af_unix: fix msg_controllen test in scm_pidfd_recv() for
     MSG_CMSG_COMPAT

   - xsk: fix xsk_build_skb() dereferencing possible ERR_PTR()

   - netfilter:
      - nft_exthdr: fix non-linear header modification
      - xt_u32, xt_sctp: validate user space input
      - nftables: exthdr: fix 4-byte stack OOB write
      - nfnetlink_osf: avoid OOB read
      - one more fix for the garbage collection work from last release

   - igmp: limit igmpv3_newpack() packet size to IP_MAX_MTU

   - bpf, sockmap: fix preempt_rt splat when using raw_spin_lock_t

   - handshake: fix null-deref in handshake_nl_done_doit()

   - ip: ignore dst hint for multipath routes to ensure packets are
     hashed across the nexthops

   - phy: micrel:
      - correct bit assignments for cable test errata
      - disable EEE according to the KSZ9477 errata

  Misc:

   - docs/bpf: document compile-once-run-everywhere (CO-RE) relocations

   - Revert "net: macsec: preserve ingress frame ordering", it appears
     to have been developed against an older kernel, problem doesn't
     exist upstream"

* tag 'net-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (95 commits)
  net: enetc: distinguish error from valid pointers in enetc_fixup_clear_rss_rfs()
  Revert "net: team: do not use dynamic lockdep key"
  net: hns3: remove GSO partial feature bit
  net: hns3: fix the port information display when sfp is absent
  net: hns3: fix invalid mutex between tc qdisc and dcb ets command issue
  net: hns3: fix debugfs concurrency issue between kfree buffer and read
  net: hns3: fix byte order conversion issue in hclge_dbg_fd_tcam_read()
  net: hns3: Support query tx timeout threshold by debugfs
  net: hns3: fix tx timeout issue
  net: phy: Provide Module 4 KSZ9477 errata (DS80000754C)
  netfilter: nf_tables: Unbreak audit log reset
  netfilter: ipset: add the missing IP_SET_HASH_WITH_NET0 macro for ip_set_hash_netportnet.c
  netfilter: nft_set_rbtree: skip sync GC for new elements in this transaction
  netfilter: nf_tables: uapi: Describe NFTA_RULE_CHAIN_ID
  netfilter: nfnetlink_osf: avoid OOB read
  netfilter: nftables: exthdr: fix 4-byte stack OOB write
  selftests/bpf: Check bpf_sk_storage has uncharged sk_omem_alloc
  bpf: bpf_sk_storage: Fix the missing uncharge in sk_omem_alloc
  bpf: bpf_sk_storage: Fix invalid wait context lockdep report
  s390/bpf: Pass through tail call counter in trampolines
  ...
2023-09-07 18:33:07 -07:00
Phil Sutter fdc04cc2d5 netfilter: nf_tables: uapi: Describe NFTA_RULE_CHAIN_ID
Add a brief description to the enum's comment.

Fixes: 837830a4b4 ("netfilter: nf_tables: add NFTA_RULE_CHAIN_ID attribute")
Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Florian Westphal <fw@strlen.de>
2023-09-06 18:09:12 +02:00