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Instead of reimplementing policies in MutliAttr for every
underlying type forward the calls to the base type.
This will be needed for DPLL which uses a multi-attr nest,
and currently gets an invalid NLA_NEST policy generated.
Reviewed-by: Jacob Keller <Jacob.e.keller@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Scalar range validation assumes enums start at 0.
Teach it to properly calculate the value range.
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The test currently specifies "l2_miss" as "true" / "false", but the
version that eventually landed in iproute2 uses "1" / "0" [1]. Align the
test accordingly.
[1] https://lore.kernel.org/netdev/20230607153550.3829340-1-idosch@nvidia.com/
Fixes: 8c33266ae26a ("selftests: forwarding: Add layer 2 miss test cases")
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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New cfm flower test case is added to the net forwarding selfttests.
Example output:
# ./tc_flower_cfm.sh p1 p2
TEST: CFM opcode match test [ OK ]
TEST: CFM level match test [ OK ]
TEST: CFM opcode and level match test [ OK ]
Signed-off-by: Zahari Doychev <zdoychev@maxlinear.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Configuring / reading ring sizes and counts is a fairly common
operation for ethtool netlink. Present a sample doing that with
YNL:
$ ./ethtool
Channels:
enp1s0: combined 1
eni1np1: combined 1
eni2np1: combined 1
Rings:
enp1s0: rx 256 tx 256
eni1np1: rx 0 tx 0
eni2np1: rx 0 tx 0
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Generate the protocol code for ethtool. Skip the stats
for now, they are the only outlier in terms of complexity.
Stats are a sort-of semi-polymorphic (attr space of a nest
depends on value of another attr) or a type-value-scalar,
depending on how one wants to look at it...
A challenge for another time.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Ethtool has an attribute set called stringset, from which
we'll generate struct ethtool_stringset. Unfortunately,
the old ethtool header declares enum ethtool_stringset
(the same name), to which compilers object.
This seems unavoidable. Check struct names against known
constants and append an underscore if conflict is detected.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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If attr set or enum has empty enum name we need to use u32 or int
as function arguments and struct members.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Ethtool's PSE PoDL has a attr nest with different prefixes:
/* Power Sourcing Equipment */
enum {
ETHTOOL_A_PSE_UNSPEC,
ETHTOOL_A_PSE_HEADER, /* nest - _A_HEADER_* */
ETHTOOL_A_PODL_PSE_ADMIN_STATE, /* u32 */
ETHTOOL_A_PODL_PSE_ADMIN_CONTROL, /* u32 */
ETHTOOL_A_PODL_PSE_PW_D_STATUS, /* u32 */
Header has a prefix of ETHTOOL_A_PSE_ and other attrs prefix of
ETHTOOL_A_PODL_PSE_ we can't cover them uniformly.
If PODL was after PSE life would be easy.
Now we either need to add prefixes to attr names which is yucky
or support setting prefix name per attr.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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ynl-regen needs to know the arguments used to generate a file.
Record excluded ops and, while at it, user headers.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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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>
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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>
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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>
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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>
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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: 305c04189997 ("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>
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Kernel does not have padding requirements for 64b attrs.
We can ignore pad attrs.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The op_name argument is barely used and identical to op.name
in all cases.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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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>
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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>
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Remove unused notification handlers.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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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>
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Renegate the code to combine } and else and use tmp variable
to store type.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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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>
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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>
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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>
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Remove unnecessary includes.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Bots started screaming that we're including stdlib.h twice.
While at it move string.h into a common spot and drop stdio.h
which we don't need.
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=5464
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=5466
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=5467
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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This reverts commit e7c5433c5aaab52ddd5448967a9a5db94a3939cc.
Commit e7c5433c5aaa ("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>
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./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>
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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>
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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>
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Renegerate code after dropping forward declarations for policies.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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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>
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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>
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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>
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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>
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I think that user space code gen for directional specs
works after recent changes. Let them through.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Move generating strmap lookup function to a helper.
No functional changes.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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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>
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Cross-merge networking fixes after downstream PR.
Conflicts:
net/sched/sch_taprio.c
d636fc5dd692 ("net: sched: add rcu annotations around qdisc->qdisc_sleeping")
dced11ef84fb ("net/sched: taprio: don't overwrite "sch" variable in taprio_dump_class_stats()")
net/ipv4/sysctl_net_ipv4.c
e209fee4118f ("net/ipv4: ping_group_range: allow GID from 2147483648 to 4294967294")
ccce324dabfe ("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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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Paolo Abeni:
"Including fixes from can, wifi, netfilter, bluetooth and ebpf.
Current release - regressions:
- bpf: sockmap: avoid potential NULL dereference in
sk_psock_verdict_data_ready()
- wifi: iwlwifi: fix -Warray-bounds bug in iwl_mvm_wait_d3_notif()
- phylink: actually fix ksettings_set() ethtool call
- eth: dwmac-qcom-ethqos: fix a regression on EMAC < 3
Current release - new code bugs:
- wifi: mt76: fix possible NULL pointer dereference in
mt7996_mac_write_txwi()
Previous releases - regressions:
- netfilter: fix NULL pointer dereference in nf_confirm_cthelper
- wifi: rtw88/rtw89: correct PS calculation for SUPPORTS_DYNAMIC_PS
- openvswitch: fix upcall counter access before allocation
- bluetooth:
- fix use-after-free in hci_remove_ltk/hci_remove_irk
- fix l2cap_disconnect_req deadlock
- nic: bnxt_en: prevent kernel panic when receiving unexpected
PHC_UPDATE event
Previous releases - always broken:
- core: annotate rfs lockless accesses
- sched: fq_pie: ensure reasonable TCA_FQ_PIE_QUANTUM values
- netfilter: add null check for nla_nest_start_noflag() in
nft_dump_basechain_hook()
- bpf: fix UAF in task local storage
- ipv4: ping_group_range: allow GID from 2147483648 to 4294967294
- ipv6: rpl: fix route of death.
- tcp: gso: really support BIG TCP
- mptcp: fixes for user-space PM address advertisement
- smc: avoid to access invalid RMBs' MRs in SMCRv1 ADD LINK CONT
- can: avoid possible use-after-free when j1939_can_rx_register fails
- batman-adv: fix UaF while rescheduling delayed work
- eth: qede: fix scheduling while atomic
- eth: ice: make writes to /dev/gnssX synchronous"
* tag 'net-6.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (83 commits)
bnxt_en: Implement .set_port / .unset_port UDP tunnel callbacks
bnxt_en: Prevent kernel panic when receiving unexpected PHC_UPDATE event
bnxt_en: Skip firmware fatal error recovery if chip is not accessible
bnxt_en: Query default VLAN before VNIC setup on a VF
bnxt_en: Don't issue AP reset during ethtool's reset operation
bnxt_en: Fix bnxt_hwrm_update_rss_hash_cfg()
net: bcmgenet: Fix EEE implementation
eth: ixgbe: fix the wake condition
eth: bnxt: fix the wake condition
lib: cpu_rmap: Fix potential use-after-free in irq_cpu_rmap_release()
bpf: Add extra path pointer check to d_path helper
net: sched: fix possible refcount leak in tc_chain_tmplt_add()
net: sched: act_police: fix sparse errors in tcf_police_dump()
net: openvswitch: fix upcall counter access before allocation
net: sched: move rtm_tca_policy declaration to include file
ice: make writes to /dev/gnssX synchronous
net: sched: add rcu annotations around qdisc->qdisc_sleeping
rfs: annotate lockless accesses to RFS sock flow table
rfs: annotate lockless accesses to sk->sk_rxhash
virtio_net: use control_buf for coalesce params
...
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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>
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Generate support for the handshake family.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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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>
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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>
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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>
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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>
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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>
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Do not print empty lines before closing brackets.
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Commit f4e4534850a9 ("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 f4e4534850a9, 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: f4e4534850a9 ("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
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