The ethtool family has a small handful of quite tricky ops
and a lot of simple very useful ops. Teach ynl-gen to skip
ops so that we can bypass the tricky ones.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Basic test to check consistency between:
- SCM_CREDENTIALS and SCM_PIDFD
- SO_PEERCRED and SO_PEERPIDFD
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: Leon Romanovsky <leon@kernel.org>
Cc: David Ahern <dsahern@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Kees Cook <keescook@chromium.org>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Kuniyuki Iwashima <kuniyu@amazon.com>
Cc: linux-kernel@vger.kernel.org
Cc: netdev@vger.kernel.org
Cc: linux-arch@vger.kernel.org
Cc: linux-kselftest@vger.kernel.org
Signed-off-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add SO_PEERPIDFD which allows to get pidfd of peer socket holder pidfd.
This thing is direct analog of SO_PEERCRED which allows to get plain PID.
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: Leon Romanovsky <leon@kernel.org>
Cc: David Ahern <dsahern@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Kees Cook <keescook@chromium.org>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Kuniyuki Iwashima <kuniyu@amazon.com>
Cc: Lennart Poettering <mzxreary@0pointer.de>
Cc: Luca Boccassi <bluca@debian.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Stanislav Fomichev <sdf@google.com>
Cc: bpf@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: netdev@vger.kernel.org
Cc: linux-arch@vger.kernel.org
Reviewed-by: Christian Brauner <brauner@kernel.org>
Acked-by: Stanislav Fomichev <sdf@google.com>
Tested-by: Luca Boccassi <bluca@debian.org>
Signed-off-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@canonical.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Implement SCM_PIDFD, a new type of CMSG type analogical to SCM_CREDENTIALS,
but it contains pidfd instead of plain pid, which allows programmers not
to care about PID reuse problem.
We mask SO_PASSPIDFD feature if CONFIG_UNIX is not builtin because
it depends on a pidfd_prepare() API which is not exported to the kernel
modules.
Idea comes from UAPI kernel group:
https://uapi-group.org/kernel-features/
Big thanks to Christian Brauner and Lennart Poettering for productive
discussions about this.
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: Leon Romanovsky <leon@kernel.org>
Cc: David Ahern <dsahern@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Kees Cook <keescook@chromium.org>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Kuniyuki Iwashima <kuniyu@amazon.com>
Cc: Lennart Poettering <mzxreary@0pointer.de>
Cc: Luca Boccassi <bluca@debian.org>
Cc: linux-kernel@vger.kernel.org
Cc: netdev@vger.kernel.org
Cc: linux-arch@vger.kernel.org
Tested-by: Luca Boccassi <bluca@debian.org>
Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@canonical.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The iproute2 output that eventually landed upstream is different than
the one used in this test, resulting in failures. Fix by adjusting the
test to use iproute2's JSON output, which is more stable than regular
output.
Fixes: 305c041899 ("selftests: net: vxlan: Add tests for vxlan nolocalbypass option.")
Signed-off-by: Vladimir Nikishkin <vladimir@nikishkin.pw>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Tested-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Netlink specs support both events and notifications (former can
define their own message contents). Plug in missing code to
generate types, parsers and include events into notification
tables.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Don't modify the raw dicts (as loaded from YAML) to pretend
that the notify attributes also exist on the ops. This makes
the code easier to follow.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Common notification handler was supposed to be a way for the user
to parse the notifications from a socket synchronously.
I don't think we'll end up using it, ynl_ntf_check() works for
all known use cases.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reading attr type with mnl_attr_get_type() for each condition
leads to most conditions being longer than 80 chars.
Avoid this by reading the type to a variable on the stack.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Code gen currently prints:
}
else if (...
This is really ugly. Fix it by delaying printing of closing
brackets in anticipation of else coming along.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
C keywords need to be avoided when naming things.
Complete the list (ethtool has at least one thing called "auto").
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This reverts commit e7c5433c5a.
Commit e7c5433c5a ("tools: ynl: Remove duplicated include
in handshake-user.c") was applied too hastily. It changes
an auto-generated file, and there's already a proper fix
on the list.
Link: https://lore.kernel.org/all/ZIMPLYi%2FxRih+DlC@nanopsycho/
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
./tools/net/ynl/generated/handshake-user.c: stdlib.h is included more than once.
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=5464
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add a sample to show off how to issue basic devlink requests.
For added testing issue get requests while walking a dump.
$ ./devlink
netdevsim/netdevsim1:
driver: netdevsim
running fw:
fw.mgmt: 10.20.30
...
netdevsim/netdevsim2:
driver: netdevsim
running fw:
fw.mgmt: 10.20.30
...
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Admittedly the devlink.yaml spec is fairly limitted,
it only covers basic device get and info-get ops.
That's sufficient to be useful (monitoring FW versions
in the fleet). Plus it gives us a chance to exercise
deep nesting and directional messaging in YNL.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Now that all nested types have structs and are sorted topologically
there should be no need to generate forward declarations for policies.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
So far we had only created structures for nested types nested
directly in messages (second level of attrs so to speak).
Walk types in depth to support deeper nesting.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
We only render parse and netlink generation helpers as needed,
to avoid generating dead code. Propagate the information from
first- and second-layer attribute sets onto all children.
Otherwise devlink won't work, it has a lot more levels of nesting.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
We need to sort the structures to avoid the need for forward
declarations. While at it remove the sort of structs when
rendering, it doesn't do anything.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
In preparation for supporting families which use different msg
ids to and from the kernel - make sure the ids in op strmap
are correct. The map is expected to be used mostly for notifications,
don't generate a separate map for the "to kernel" direction.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Cross-merge networking fixes after downstream PR.
Conflicts:
net/sched/sch_taprio.c
d636fc5dd6 ("net: sched: add rcu annotations around qdisc->qdisc_sleeping")
dced11ef84 ("net/sched: taprio: don't overwrite "sch" variable in taprio_dump_class_stats()")
net/ipv4/sysctl_net_ipv4.c
e209fee411 ("net/ipv4: ping_group_range: allow GID from 2147483648 to 4294967294")
ccce324dab ("tcp: make the first N SYN RTO backoffs linear")
https://lore.kernel.org/all/20230605100816.08d41a7b@canb.auug.org.au/
No adjacent changes.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Daniel Borkmann says:
====================
pull-request: bpf 2023-06-07
We've added 7 non-merge commits during the last 7 day(s) which contain
a total of 12 files changed, 112 insertions(+), 7 deletions(-).
The main changes are:
1) Fix a use-after-free in BPF's task local storage, from KP Singh.
2) Make struct path handling more robust in bpf_d_path, from Jiri Olsa.
3) Fix a syzbot NULL-pointer dereference in sockmap, from Eric Dumazet.
4) UAPI fix for BPF_NETFILTER before final kernel ships,
from Florian Westphal.
5) Fix map-in-map array_map_gen_lookup code generation where elem_size was
not being set for inner maps, from Rhys Rustad-Elliott.
6) Fix sockopt_sk selftest's NETLINK_LIST_MEMBERSHIPS assertion,
from Yonghong Song.
* tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
bpf: Add extra path pointer check to d_path helper
selftests/bpf: Fix sockopt_sk selftest
bpf: netfilter: Add BPF_NETFILTER bpf_attach_type
selftests/bpf: Add access_inner_map selftest
bpf: Fix elem_size not being set for inner maps
bpf: Fix UAF in task local storage
bpf, sockmap: Avoid potential NULL dereference in sk_psock_verdict_data_ready()
====================
Link: https://lore.kernel.org/r/20230607220514.29698-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When parsing multi-attr we count the objects and then allocate
an array to hold the parsed objects. If an attr space has multiple
multi-attr objects, however, if parsing the first array fails
we'll leave the object count for the second even tho the second
array was never allocated.
This may cause crashes when freeing objects on error.
Count attributes to a variable on the stack and only set the count
in the object once the memory was allocated.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The handshake family needs support for MultiAttr scalars.
Right now we only support code gen for MultiAttr nested
types.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Add a sample application using the C library.
My main goal is to make writing selftests easier but until
I have some of those ready I think it's useful to show off
the functionality and let people poke and tinker.
Sample outputs - dump:
$ ./netdev
Select ifc ($ifindex; or 0 = dump; or -2 ntf check): 0
lo[1] 0:
enp1s0[2] 23: basic redirect rx-sg
Notifications (watching veth pair getting added and deleted):
$ ./netdev
Select ifc ($ifindex; or 0 = dump; or -2 ntf check): -2
[53] 0: (ntf: dev-add-ntf)
[54] 0: (ntf: dev-add-ntf)
[54] 23: basic redirect rx-sg (ntf: dev-change-ntf)
[53] 23: basic redirect rx-sg (ntf: dev-change-ntf)
[53] 23: basic redirect rx-sg (ntf: dev-del-ntf)
[54] 23: basic redirect rx-sg (ntf: dev-del-ntf)
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Generate the code for netdev and fou families. They are simple
and already supported by the code gen.
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Add "fixed" part of the user space Netlink Spec-based library.
This will get linked with the protocol implementations to form
a full API.
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Commit f4e4534850 ("net/netlink: fix NETLINK_LIST_MEMBERSHIPS length report")
fixed NETLINK_LIST_MEMBERSHIPS length report which caused
selftest sockopt_sk failure. The failure log looks like
test_sockopt_sk:PASS:join_cgroup /sockopt_sk 0 nsec
run_test:PASS:skel_load 0 nsec
run_test:PASS:setsockopt_link 0 nsec
run_test:PASS:getsockopt_link 0 nsec
getsetsockopt:FAIL:Unexpected NETLINK_LIST_MEMBERSHIPS value unexpected Unexpected NETLINK_LIST_MEMBERSHIPS value: actual 8 != expected 4
run_test:PASS:getsetsockopt 0 nsec
#201 sockopt_sk:FAIL
In net/netlink/af_netlink.c, function netlink_getsockopt(), for NETLINK_LIST_MEMBERSHIPS,
nlk->ngroups equals to 36. Before Commit f4e4534850, the optlen is calculated as
ALIGN(nlk->ngroups / 8, sizeof(u32)) = 4
After that commit, the optlen is
ALIGN(BITS_TO_BYTES(nlk->ngroups), sizeof(u32)) = 8
Fix the test by setting the expected optlen to be 8.
Fixes: f4e4534850 ("net/netlink: fix NETLINK_LIST_MEMBERSHIPS length report")
Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20230606172202.1606249-1-yhs@fb.com
Andrii Nakryiko writes:
And we currently don't have an attach type for NETLINK BPF link.
Thankfully it's not too late to add it. I see that link_create() in
kernel/bpf/syscall.c just bypasses attach_type check. We shouldn't
have done that. Instead we need to add BPF_NETLINK attach type to enum
bpf_attach_type. And wire all that properly throughout the kernel and
libbpf itself.
This adds BPF_NETFILTER and uses it. This breaks uabi but this
wasn't in any non-rc release yet, so it should be fine.
v2: check link_attack prog type in link_create too
Fixes: 84601d6ee6 ("bpf: add bpf_link support for BPF_NETFILTER programs")
Suggested-by: Andrii Nakryiko <andrii.nakryiko@gmail.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/CAEf4BzZ69YgrQW7DHCJUT_X+GqMq_ZQQPBwopaJJVGFD5=d5Vg@mail.gmail.com/
Link: https://lore.kernel.org/bpf/20230605131445.32016-1-fw@strlen.de
To align with what is done by the in-kernel PM, update userspace pm
subflow selftests, by sending the a remove_addrs command together
before the remove_subflows command. This will get a RM_ADDR in
chk_rm_nr().
Fixes: d9a4594eda ("mptcp: netlink: Add MPTCP_PM_CMD_REMOVE")
Fixes: 5e986ec468 ("selftests: mptcp: userspace pm subflow tests")
Link: https://github.com/multipath-tcp/mptcp_net-next/issues/379
Cc: stable@vger.kernel.org
Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Geliang Tang <geliang.tang@suse.com>
Signed-off-by: Mat Martineau <martineau@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch is linked to the previous commit ("mptcp: only send RM_ADDR in
nl_cmd_remove").
To align with what is done by the in-kernel PM, update userspace pm addr
selftests, by sending a remove_subflows command together after the
remove_addrs command.
Fixes: d9a4594eda ("mptcp: netlink: Add MPTCP_PM_CMD_REMOVE")
Fixes: 97040cf980 ("selftests: mptcp: userspace pm address tests")
Cc: stable@vger.kernel.org
Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Geliang Tang <geliang.tang@suse.com>
Signed-off-by: Mat Martineau <martineau@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
When everything is configured, VLAN membership on the bridge in this
selftest are as follows:
# bridge vlan show
port vlan-id
swp2 1 PVID Egress Untagged
555
br1 1 Egress Untagged
555 PVID Egress Untagged
Note that it is possible for untagged traffic to just flow through as VLAN
1, instead of using VLAN 555 as intended by the test. This configuration
seems too close to "works by accident", and it would be better to just shut
out VLAN 1 altogether.
To that end, configure vlan_default_pvid of 0:
# bridge vlan show
port vlan-id
swp2 555
br1 555 PVID Egress Untagged
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Amit Cohen <amcohen@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add a topology diagram to this selftest to make the configuration easier to
understand.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Amit Cohen <amcohen@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The topology diagram implies that $swp1 and $swp2 are members of the bridge
br0, when in fact only their uppers, $swp1.10 and $swp2.10 are. Adjust the
diagram.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Amit Cohen <amcohen@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The topology diagram implies that $swp1 and $swp2 are members of the bridge
br0, when in fact only their uppers, $swp1.10 and $swp2.10 are. Adjust the
diagram.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Amit Cohen <amcohen@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
* Address some fallout of the locking rework, this time affecting
the way the vgic is configured
* Fix an issue where the page table walker frees a subtree and
then proceeds with walking what it has just freed...
* Check that a given PA donated to the guest is actually memory
(only affecting pKVM)
* Correctly handle MTE CMOs by Set/Way
* Fix the reported address of a watchpoint forwarded to userspace
* Fix the freeing of the root of stage-2 page tables
* Stop creating spurious PMU events to perform detection of the
default PMU and use the existing PMU list instead.
x86:
* Fix a memslot lookup bug in the NX recovery thread that could
theoretically let userspace bypass the NX hugepage mitigation
* Fix a s/BLOCKING/PENDING bug in SVM's vNMI support
* Account exit stats for fastpath VM-Exits that never leave the super
tight run-loop
* Fix an out-of-bounds bug in the optimized APIC map code, and add a
regression test for the race.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fixes from Paolo Bonzini:
"ARM:
- Address some fallout of the locking rework, this time affecting the
way the vgic is configured
- Fix an issue where the page table walker frees a subtree and then
proceeds with walking what it has just freed...
- Check that a given PA donated to the guest is actually memory (only
affecting pKVM)
- Correctly handle MTE CMOs by Set/Way
- Fix the reported address of a watchpoint forwarded to userspace
- Fix the freeing of the root of stage-2 page tables
- Stop creating spurious PMU events to perform detection of the
default PMU and use the existing PMU list instead
x86:
- Fix a memslot lookup bug in the NX recovery thread that could
theoretically let userspace bypass the NX hugepage mitigation
- Fix a s/BLOCKING/PENDING bug in SVM's vNMI support
- Account exit stats for fastpath VM-Exits that never leave the super
tight run-loop
- Fix an out-of-bounds bug in the optimized APIC map code, and add a
regression test for the race"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: selftests: Add test for race in kvm_recalculate_apic_map()
KVM: x86: Bail from kvm_recalculate_phys_map() if x2APIC ID is out-of-bounds
KVM: x86: Account fastpath-only VM-Exits in vCPU stats
KVM: SVM: vNMI pending bit is V_NMI_PENDING_MASK not V_NMI_BLOCKING_MASK
KVM: x86/mmu: Grab memslot for correct address space in NX recovery worker
KVM: arm64: Document default vPMU behavior on heterogeneous systems
KVM: arm64: Iterate arm_pmus list to probe for default PMU
KVM: arm64: Drop last page ref in kvm_pgtable_stage2_free_removed()
KVM: arm64: Populate fault info for watchpoint
KVM: arm64: Reload PTE after invoking walker callback on preorder traversal
KVM: arm64: Handle trap of tagged Set/Way CMOs
arm64: Add missing Set/Way CMO encodings
KVM: arm64: Prevent unconditional donation of unmapped regions from the host
KVM: arm64: vgic: Fix a comment
KVM: arm64: vgic: Fix locking comment
KVM: arm64: vgic: Wrap vgic_its_create() with config_lock
KVM: arm64: vgic: Fix a circular locking issue
This resolves the issue that generated binary is showing up as an untracked git file after every build on the kernel.
Signed-off-by: Weihao Gao <weihaogao@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
- Return NULL if the trace_probe list on trace_probe_event is empty.
- selftests/ftrace: Choose testing symbol name for filtering feature
from sample data instead of fixed symbol.
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Merge tag 'probes-fixes-6.4-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull probes fixes from Masami Hiramatsu:
- Return NULL if the trace_probe list on trace_probe_event is empty
- selftests/ftrace: Choose testing symbol name for filtering feature
from sample data instead of fixed symbol
* tag 'probes-fixes-6.4-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
selftests/ftrace: Choose target function for filter test from samples
tracing/probe: trace_probe_primary_from_call(): checked list_first_entry
