Commit Graph

33625 Commits (b601135e8d704f3218efaf07cdb2ebf310aedc2a)

Author SHA1 Message Date
Petr Machata 3446dcd7df selftests: forwarding: bridge_mdb_max: Add a new selftest
Add a suite covering mcast_n_groups and mcast_max_groups bridge features.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-06 08:48:27 +00:00
Petr Machata 9ae8546973 selftests: forwarding: lib: Add helpers to build IGMP/MLD leave packets
The testsuite that checks for mcast_max_groups functionality will need to
wipe the added groups as well. Add helpers to build an IGMP or MLD packets
announcing that host is leaving a given group.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-06 08:48:27 +00:00
Petr Machata 705d4bc7b6 selftests: forwarding: lib: Allow list of IPs for IGMPv3/MLDv2
The testsuite that checks for mcast_max_groups functionality will need
to generate IGMP and MLD packets with configurable number of (S,G)
addresses. To that end, further extend igmpv3_is_in_get() and
mldv2_is_in_get() to allow a list of IP addresses instead of one
address.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-06 08:48:27 +00:00
Petr Machata 506a1ac9d3 selftests: forwarding: lib: Parameterize IGMPv3/MLDv2 generation
In order to generate IGMPv3 and MLDv2 packets on the fly, the
functions that generate these packets need to be able to generate
packets for different groups and different sources. Generating MLDv2
packets further needs the source address of the packet for purposes of
checksum calculation. Add the necessary parameters, and generate the
payload accordingly by dispatching to helpers added in the previous
patches.

Adjust the sole client, bridge_mdb.sh, as well.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-06 08:48:26 +00:00
Petr Machata 952e0ee38c selftests: forwarding: lib: Add helpers for checksum handling
In order to generate IGMPv3 and MLDv2 packets on the fly, we will need
helpers to calculate the packet checksum.

The approach presented in this patch revolves around payload templates
for mausezahn. These are mausezahn-like payload strings (01:23:45:...)
with possibly one 2-byte sequence replaced with the word PAYLOAD. The
main function is payload_template_calc_checksum(), which calculates
RFC 1071 checksum of the message. There are further helpers to then
convert the checksum to the payload format, and to expand it.

For IPv6, MLDv2 message checksum is computed using a pseudoheader that
differs from the header used in the payload itself. The fact that the
two messages are different means that the checksum needs to be
returned as a separate quantity, instead of being expanded in-place in
the payload itself. Furthermore, the pseudoheader includes a length of
the message. Much like the checksum, this needs to be expanded in
mausezahn format. And likewise for number of addresses for (S,G)
entries. Thus we have several places where a computed quantity needs
to be presented in the payload format. Add a helper u16_to_bytes(),
which will be used in all these cases.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-06 08:48:26 +00:00
Petr Machata fcf4927632 selftests: forwarding: lib: Add helpers for IP address handling
In order to generate IGMPv3 and MLDv2 packets on the fly, we will need
helpers to expand IPv4 and IPv6 addresses given as parameters in
mausezahn payload notation. Add helpers that do it.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-06 08:48:26 +00:00
Petr Machata f7ccf60c4a selftests: forwarding: bridge_mdb: Fix a typo
Add the letter missing from the word "INCLUDE".

Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-06 08:48:26 +00:00
Petr Machata 344dd2c9e7 selftests: forwarding: Move IGMP- and MLD-related functions to lib
These functions will be helpful for other testsuites as well. Extract them
to a common place.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-02-06 08:48:26 +00:00
Jakub Kicinski 82b4a9412b Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
net/core/gro.c
  7d2c89b325 ("skb: Do mix page pool and page referenced frags in GRO")
  b1a78b9b98 ("net: add support for ipv4 big tcp")
https://lore.kernel.org/all/20230203094454.5766f160@canb.auug.org.au/

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-02-02 14:49:55 -08:00
Linus Torvalds edb9b8f380 Including fixes from bpf, can and netfilter.
Current release - regressions:
 
  - phy: fix null-deref in phy_attach_direct
 
  - mac802154: fix possible double free upon parsing error
 
 Previous releases - regressions:
 
  - bpf: preserve reg parent/live fields when copying range info,
    prevent mis-verification of programs as safe
 
  - ip6: fix GRE tunnels not generating IPv6 link local addresses
 
  - phy: dp83822: fix null-deref on DP83825/DP83826 devices
 
  - sctp: do not check hb_timer.expires when resetting hb_timer
 
  - eth: mtk_sock: fix SGMII configuration after phylink conversion
 
 Previous releases - always broken:
 
  - eth: xdp: execute xdp_do_flush() before napi_complete_done()
 
  - skb: do not mix page pool and page referenced frags in GRO
 
  - bpf:
    - fix a possible task gone issue with bpf_send_signal[_thread]()
    - fix an off-by-one bug in bpf_mem_cache_idx() to select
      the right cache
    - add missing btf_put to register_btf_id_dtor_kfuncs
    - sockmap: fon't let sock_map_{close,destroy,unhash} call itself
 
  - gso: fix null-deref in skb_segment_list()
 
  - mctp: purge receive queues on sk destruction
 
  - fix UaF caused by accept on already connected socket in exotic
    socket families
 
  - tls: don't treat list head as an entry in tls_is_tx_ready()
 
  - netfilter: br_netfilter: disable sabotage_in hook after first
    suppression
 
  - wwan: t7xx: fix runtime PM implementation
 
 Misc:
 
  - MAINTAINERS: spring cleanup of networking maintainers
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-6.2-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

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

  Current release - regressions:

   - phy: fix null-deref in phy_attach_direct

   - mac802154: fix possible double free upon parsing error

  Previous releases - regressions:

   - bpf: preserve reg parent/live fields when copying range info,
     prevent mis-verification of programs as safe

   - ip6: fix GRE tunnels not generating IPv6 link local addresses

   - phy: dp83822: fix null-deref on DP83825/DP83826 devices

   - sctp: do not check hb_timer.expires when resetting hb_timer

   - eth: mtk_sock: fix SGMII configuration after phylink conversion

  Previous releases - always broken:

   - eth: xdp: execute xdp_do_flush() before napi_complete_done()

   - skb: do not mix page pool and page referenced frags in GRO

   - bpf:
      - fix a possible task gone issue with bpf_send_signal[_thread]()
      - fix an off-by-one bug in bpf_mem_cache_idx() to select the right
        cache
      - add missing btf_put to register_btf_id_dtor_kfuncs
      - sockmap: fon't let sock_map_{close,destroy,unhash} call itself

   - gso: fix null-deref in skb_segment_list()

   - mctp: purge receive queues on sk destruction

   - fix UaF caused by accept on already connected socket in exotic
     socket families

   - tls: don't treat list head as an entry in tls_is_tx_ready()

   - netfilter: br_netfilter: disable sabotage_in hook after first
     suppression

   - wwan: t7xx: fix runtime PM implementation

  Misc:

   - MAINTAINERS: spring cleanup of networking maintainers"

* tag 'net-6.2-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (65 commits)
  mtk_sgmii: enable PCS polling to allow SFP work
  net: mediatek: sgmii: fix duplex configuration
  net: mediatek: sgmii: ensure the SGMII PHY is powered down on configuration
  MAINTAINERS: update SCTP maintainers
  MAINTAINERS: ipv6: retire Hideaki Yoshifuji
  mailmap: add John Crispin's entry
  MAINTAINERS: bonding: move Veaceslav Falico to CREDITS
  net: openvswitch: fix flow memory leak in ovs_flow_cmd_new
  net: ethernet: mtk_eth_soc: disable hardware DSA untagging for second MAC
  virtio-net: Keep stop() to follow mirror sequence of open()
  selftests: net: udpgso_bench_tx: Cater for pending datagrams zerocopy benchmarking
  selftests: net: udpgso_bench: Fix racing bug between the rx/tx programs
  selftests: net: udpgso_bench_rx/tx: Stop when wrong CLI args are provided
  selftests: net: udpgso_bench_rx: Fix 'used uninitialized' compiler warning
  can: mcp251xfd: mcp251xfd_ring_set_ringparam(): assign missing tx_obj_num_coalesce_irq
  can: isotp: split tx timer into transmission and timeout
  can: isotp: handle wait_event_interruptible() return values
  can: raw: fix CAN FD frame transmissions over CAN XL devices
  can: j1939: fix errant WARN_ON_ONCE in j1939_session_deactivate
  hv_netvsc: Fix missed pagebuf entries in netvsc_dma_map/unmap()
  ...
2023-02-02 14:03:31 -08:00
Andrei Gherzan 329c9cd769 selftests: net: udpgso_bench_tx: Cater for pending datagrams zerocopy benchmarking
The test tool can check that the zerocopy number of completions value is
valid taking into consideration the number of datagram send calls. This can
catch the system into a state where the datagrams are still in the system
(for example in a qdisk, waiting for the network interface to return a
completion notification, etc).

This change adds a retry logic of computing the number of completions up to
a configurable (via CLI) timeout (default: 2 seconds).

Fixes: 79ebc3c260 ("net/udpgso_bench_tx: options to exercise TX CMSG")
Signed-off-by: Andrei Gherzan <andrei.gherzan@canonical.com>
Cc: Willem de Bruijn <willemb@google.com>
Cc: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://lore.kernel.org/r/20230201001612.515730-4-andrei.gherzan@canonical.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-02-02 13:29:51 +01:00
Andrei Gherzan dafe93b9ee selftests: net: udpgso_bench: Fix racing bug between the rx/tx programs
"udpgro_bench.sh" invokes udpgso_bench_rx/udpgso_bench_tx programs
subsequently and while doing so, there is a chance that the rx one is not
ready to accept socket connections. This racing bug could fail the test
with at least one of the following:

./udpgso_bench_tx: connect: Connection refused
./udpgso_bench_tx: sendmsg: Connection refused
./udpgso_bench_tx: write: Connection refused

This change addresses this by making udpgro_bench.sh wait for the rx
program to be ready before firing off the tx one - up to a 10s timeout.

Fixes: 3a687bef14 ("selftests: udp gso benchmark")
Signed-off-by: Andrei Gherzan <andrei.gherzan@canonical.com>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: Willem de Bruijn <willemb@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://lore.kernel.org/r/20230201001612.515730-3-andrei.gherzan@canonical.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-02-02 13:29:51 +01:00
Andrei Gherzan db9b47ee9f selftests: net: udpgso_bench_rx/tx: Stop when wrong CLI args are provided
Leaving unrecognized arguments buried in the output, can easily hide a
CLI/script typo. Avoid this by exiting when wrong arguments are provided to
the udpgso_bench test programs.

Fixes: 3a687bef14 ("selftests: udp gso benchmark")
Signed-off-by: Andrei Gherzan <andrei.gherzan@canonical.com>
Cc: Willem de Bruijn <willemb@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://lore.kernel.org/r/20230201001612.515730-2-andrei.gherzan@canonical.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-02-02 13:29:51 +01:00
Andrei Gherzan c03c80e3a0 selftests: net: udpgso_bench_rx: Fix 'used uninitialized' compiler warning
This change fixes the following compiler warning:

/usr/include/x86_64-linux-gnu/bits/error.h:40:5: warning: ‘gso_size’ may
be used uninitialized [-Wmaybe-uninitialized]
   40 |     __error_noreturn (__status, __errnum, __format,
   __va_arg_pack ());
         |
	 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	 udpgso_bench_rx.c: In function ‘main’:
	 udpgso_bench_rx.c:253:23: note: ‘gso_size’ was declared here
	   253 |         int ret, len, gso_size, budget = 256;

Fixes: 3327a9c463 ("selftests: add functionals test for UDP GRO")
Signed-off-by: Andrei Gherzan <andrei.gherzan@canonical.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://lore.kernel.org/r/20230201001612.515730-1-andrei.gherzan@canonical.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-02-02 13:29:51 +01:00
Linus Torvalds 9f266ccaa2 virtio,vhost,vdpa: fixes
Just small bugfixes all over the place.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull virtio fixes from Michael Tsirkin:
 "Just small bugfixes all over the place"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  vdpa: ifcvf: Do proper cleanup if IFCVF init fails
  vhost-scsi: unbreak any layout for response
  tools/virtio: fix the vringh test for virtio ring changes
  vhost/net: Clear the pending messages when the backend is removed
2023-02-01 10:31:53 -08:00
Petr Machata bd32ff6872 selftests: net: forwarding: lib: Drop lldpad_app_wait_set(), _del()
The existing users of these helpers have been converted to iproute2 dcb.
Drop the helpers.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-01-31 21:02:11 -08:00
Petr Machata 5b3ef0452c selftests: mlxsw: qos_defprio: Convert from lldptool to dcb
Set up default port priority through the iproute2 dcb tool, which is easier
to understand and manage.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-01-31 21:02:11 -08:00
Petr Machata 10d5bd0b69 selftests: mlxsw: qos_dscp_router: Convert from lldptool to dcb
Set up DSCP prioritization through the iproute2 dcb tool, which is easier
to understand and manage.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-01-31 21:02:11 -08:00
Petr Machata 1680801ef6 selftests: mlxsw: qos_dscp_bridge: Convert from lldptool to dcb
Set up DSCP prioritization through the iproute2 dcb tool, which is easier
to understand and manage.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-01-31 21:02:11 -08:00
Jakub Kicinski 981cbcb030 tools: net: use python3 explicitly
The scripts require Python 3 and some distros are dropping
Python 2 support.

Reported-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-01-31 20:36:03 -08:00
Jakub Kicinski 5c6674f6eb tools: ynl: load jsonschema on demand
The CLI script tries to validate jsonschema by default.
It's seems better to validate too many times than too few.
However, when copying the scripts to random servers having
to install jsonschema is tedious. Load jsonschema via
importlib, and let the user opt out.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-01-31 20:36:03 -08:00
Jakub Kicinski 8dfec0a888 tools: ynl: use operation names from spec on the CLI
When I wrote the first version of the Python code I was quite
excited that we can generate class methods directly from the
spec. Unfortunately we need to use valid identifiers for method
names (specifically no dashes are allowed). Don't reuse those
names on the CLI, it's much more natural to use the operation
names exactly as listed in the spec.

Instead of:
  ./cli --do rings_get
use:
  ./cli --do rings-get

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-01-31 20:36:03 -08:00
Jakub Kicinski 4cd2796f3f tools: ynl: support pretty printing bad attribute names
One of my favorite features of the Netlink specs is that they
make decoding structured extack a ton easier.
Implement pretty printing bad attribute names in YNL.

For example it will now say:

  'bad-attr': '.header.flags'

rather than the useless:

  'bad-attr-offs': 32

Proof:

  $ ./cli.py --spec ethtool.yaml --do rings_get \
     --json '{"header":{"dev-index":1, "flags":4}}'
  Netlink error: Invalid argument
  nl_len = 68 (52) nl_flags = 0x300 nl_type = 2
	error: -22	extack: {'msg': 'reserved bit set',
				 'bad-attr': '.header.flags'}

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-01-31 20:36:03 -08:00
Jakub Kicinski 90256f3f80 tools: ynl: support multi-attr
Ethtool uses mutli-attr, add the support to YNL.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-01-31 20:36:03 -08:00
Jakub Kicinski fd0616d342 tools: ynl: support directional enum-model in CLI
Support families which use different IDs for messages
to and from the kernel.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-01-31 20:36:03 -08:00
Jakub Kicinski 19b64b48a3 tools: ynl: add support for types needed by ethtool
Ethtool needs support for handful of extra types.
It doesn't have the definitions section yet.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-01-31 20:36:03 -08:00
Jakub Kicinski 30a5c6c810 tools: ynl: use the common YAML loading and validation code
Adapt the common object hierarchy in code gen and CLI.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-01-31 20:36:03 -08:00
Jakub Kicinski 3aacf82813 tools: ynl: add an object hierarchy to represent parsed spec
There's a lot of copy and pasting going on between the "cli"
and code gen when it comes to representing the parsed spec.
Create a library which both can use.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-01-31 20:36:03 -08:00
Jakub Kicinski 4e4480e89c tools: ynl: move the cli and netlink code around
Move the CLI code out of samples/ and the library part
of it into tools/net/ynl/lib/. This way we can start
sharing some code with the code gen.

Initially I thought that code gen is too C-specific to
share anything but basic stuff like calculating values
for enums can easily be shared.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-01-31 20:36:03 -08:00
Jakub Kicinski eaf317e7d2 tools: ynl-gen: prevent do / dump reordering
An earlier fix tried to address generated code jumping around
one code-gen run to another. Turns out dict()s are already
ordered since Python 3.7, the problem is that we iterate over
operation modes using a set(). Sets are unordered in Python.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-01-31 20:36:03 -08:00
Waiman Long e5ae880384 cgroup/cpuset: Fix wrong check in update_parent_subparts_cpumask()
It was found that the check to see if a partition could use up all
the cpus from the parent cpuset in update_parent_subparts_cpumask()
was incorrect. As a result, it is possible to leave parent with no
effective cpu left even if there are tasks in the parent cpuset. This
can lead to system panic as reported in [1].

Fix this probem by updating the check to fail the enabling the partition
if parent's effective_cpus is a subset of the child's cpus_allowed.

Also record the error code when an error happens in update_prstate()
and add a test case where parent partition and child have the same cpu
list and parent has task. Enabling partition in the child will fail in
this case.

[1] https://www.spinics.net/lists/cgroups/msg36254.html

Fixes: f0af1bfc27 ("cgroup/cpuset: Relax constraints to partition & cpus changes")
Cc: stable@vger.kernel.org # v6.1
Reported-by: Srinivas Pandruvada <srinivas.pandruvada@intel.com>
Signed-off-by: Waiman Long <longman@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2023-01-31 12:14:02 -10:00
Andrei Gherzan a6efc42a86 selftest: net: Improve IPV6_TCLASS/IPV6_HOPLIMIT tests apparmor compatibility
"tcpdump" is used to capture traffic in these tests while using a random,
temporary and not suffixed file for it. This can interfere with apparmor
configuration where the tool is only allowed to read from files with
'known' extensions.

The MINE type application/vnd.tcpdump.pcap was registered with IANA for
pcap files and .pcap is the extension that is both most common but also
aligned with standard apparmor configurations. See TCPDUMP(8) for more
details.

This improves compatibility with standard apparmor configurations by
using ".pcap" as the file extension for the tests' temporary files.

Signed-off-by: Andrei Gherzan <andrei.gherzan@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-01-28 13:55:12 +00:00
Jakub Kicinski 2d104c390f 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:

====================
bpf-next 2023-01-28

We've added 124 non-merge commits during the last 22 day(s) which contain
a total of 124 files changed, 6386 insertions(+), 1827 deletions(-).

The main changes are:

1) Implement XDP hints via kfuncs with initial support for RX hash and
   timestamp metadata kfuncs, from Stanislav Fomichev and
   Toke Høiland-Jørgensen.
   Measurements on overhead: https://lore.kernel.org/bpf/875yellcx6.fsf@toke.dk

2) Extend libbpf's bpf_tracing.h support for tracing arguments of
   kprobes/uprobes and syscall as a special case, from Andrii Nakryiko.

3) Significantly reduce the search time for module symbols by livepatch
   and BPF, from Jiri Olsa and Zhen Lei.

4) Enable cpumasks to be used as kptrs, which is useful for tracing
   programs tracking which tasks end up running on which CPUs
   in different time intervals, from David Vernet.

5) Fix several issues in the dynptr processing such as stack slot liveness
   propagation, missing checks for PTR_TO_STACK variable offset, etc,
   from Kumar Kartikeya Dwivedi.

6) Various performance improvements, fixes, and introduction of more
   than just one XDP program to XSK selftests, from Magnus Karlsson.

7) Big batch to BPF samples to reduce deprecated functionality,
   from Daniel T. Lee.

8) Enable struct_ops programs to be sleepable in verifier,
   from David Vernet.

9) Reduce pr_warn() noise on BTF mismatches when they are expected under
   the CONFIG_MODULE_ALLOW_BTF_MISMATCH config anyway, from Connor O'Brien.

10) Describe modulo and division by zero behavior of the BPF runtime
    in BPF's instruction specification document, from Dave Thaler.

11) Several improvements to libbpf API documentation in libbpf.h,
    from Grant Seltzer.

12) Improve resolve_btfids header dependencies related to subcmd and add
    proper support for HOSTCC, from Ian Rogers.

13) Add ipip6 and ip6ip decapsulation support for bpf_skb_adjust_room()
    helper along with BPF selftests, from Ziyang Xuan.

14) Simplify the parsing logic of structure parameters for BPF trampoline
    in the x86-64 JIT compiler, from Pu Lehui.

15) Get BTF working for kernels with CONFIG_RUST enabled by excluding
    Rust compilation units with pahole, from Martin Rodriguez Reboredo.

16) Get bpf_setsockopt() working for kTLS on top of TCP sockets,
    from Kui-Feng Lee.

17) Disable stack protection for BPF objects in bpftool given BPF backends
    don't support it, from Holger Hoffstätte.

* tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (124 commits)
  selftest/bpf: Make crashes more debuggable in test_progs
  libbpf: Add documentation to map pinning API functions
  libbpf: Fix malformed documentation formatting
  selftests/bpf: Properly enable hwtstamp in xdp_hw_metadata
  selftests/bpf: Calls bpf_setsockopt() on a ktls enabled socket.
  bpf: Check the protocol of a sock to agree the calls to bpf_setsockopt().
  bpf/selftests: Verify struct_ops prog sleepable behavior
  bpf: Pass const struct bpf_prog * to .check_member
  libbpf: Support sleepable struct_ops.s section
  bpf: Allow BPF_PROG_TYPE_STRUCT_OPS programs to be sleepable
  selftests/bpf: Fix vmtest static compilation error
  tools/resolve_btfids: Alter how HOSTCC is forced
  tools/resolve_btfids: Install subcmd headers
  bpf/docs: Document the nocast aliasing behavior of ___init
  bpf/docs: Document how nested trusted fields may be defined
  bpf/docs: Document cpumask kfuncs in a new file
  selftests/bpf: Add selftest suite for cpumask kfuncs
  selftests/bpf: Add nested trust selftests suite
  bpf: Enable cpumasks to be queried and used as kptrs
  bpf: Disallow NULLable pointers for trusted kfuncs
  ...
====================

Link: https://lore.kernel.org/r/20230128004827.21371-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-01-28 00:00:14 -08:00
Jakub Kicinski 0548c5f26a bpf-for-netdev
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Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf

Daniel Borkmann says:

====================
bpf 2023-01-27

We've added 10 non-merge commits during the last 9 day(s) which contain
a total of 10 files changed, 170 insertions(+), 59 deletions(-).

The main changes are:

1) Fix preservation of register's parent/live fields when copying
   range-info, from Eduard Zingerman.

2) Fix an off-by-one bug in bpf_mem_cache_idx() to select the right
   cache, from Hou Tao.

3) Fix stack overflow from infinite recursion in sock_map_close(),
   from Jakub Sitnicki.

4) Fix missing btf_put() in register_btf_id_dtor_kfuncs()'s error path,
   from Jiri Olsa.

5) Fix a splat from bpf_setsockopt() via lsm_cgroup/socket_sock_rcv_skb,
   from Kui-Feng Lee.

6) Fix bpf_send_signal[_thread]() helpers to hold a reference on the task,
   from Yonghong Song.

* tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
  bpf: Fix the kernel crash caused by bpf_setsockopt().
  selftests/bpf: Cover listener cloning with progs attached to sockmap
  selftests/bpf: Pass BPF skeleton to sockmap_listen ops tests
  bpf, sockmap: Check for any of tcp_bpf_prots when cloning a listener
  bpf, sockmap: Don't let sock_map_{close,destroy,unhash} call itself
  bpf: Add missing btf_put to register_btf_id_dtor_kfuncs
  selftests/bpf: Verify copy_register_state() preserves parent/live fields
  bpf: Fix to preserve reg parent/live fields when copying range info
  bpf: Fix a possible task gone issue with bpf_send_signal[_thread]() helpers
  bpf: Fix off-by-one error in bpf_mem_cache_idx()
====================

Link: https://lore.kernel.org/r/20230127215820.4993-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-01-27 23:32:03 -08:00
Jakub Kicinski b568d3072a Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Conflicts:

drivers/net/ethernet/intel/ice/ice_main.c
  418e53401e ("ice: move devlink port creation/deletion")
  643ef23bd9 ("ice: Introduce local var for readability")
https://lore.kernel.org/all/20230127124025.0dacef40@canb.auug.org.au/
https://lore.kernel.org/all/20230124005714.3996270-1-anthony.l.nguyen@intel.com/

drivers/net/ethernet/engleder/tsnep_main.c
  3d53aaef43 ("tsnep: Fix TX queue stop/wake for multiple queues")
  25faa6a4c5 ("tsnep: Replace TX spin_lock with __netif_tx_lock")
https://lore.kernel.org/all/20230127123604.36bb3e99@canb.auug.org.au/

net/netfilter/nf_conntrack_proto_sctp.c
  13bd9b31a9 ("Revert "netfilter: conntrack: add sctp DATA_SENT state"")
  a44b765148 ("netfilter: conntrack: unify established states for SCTP paths")
  f71cb8f45d ("netfilter: conntrack: sctp: use nf log infrastructure for invalid packets")
https://lore.kernel.org/all/20230127125052.674281f9@canb.auug.org.au/
https://lore.kernel.org/all/d36076f3-6add-a442-6d4b-ead9f7ffff86@tessares.net/

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-01-27 22:56:18 -08:00
Stanislav Fomichev 16809afdcb selftest/bpf: Make crashes more debuggable in test_progs
Reset stdio before printing verbose log of the SIGSEGV'ed test.
Otherwise, it's hard to understand what's going on in the cases like [0].

With the following patch applied:

	--- a/tools/testing/selftests/bpf/prog_tests/xdp_metadata.c
	+++ b/tools/testing/selftests/bpf/prog_tests/xdp_metadata.c
	@@ -392,6 +392,11 @@ void test_xdp_metadata(void)
	 		       "generate freplace packet"))
	 		goto out;

	+
	+	ASSERT_EQ(1, 2, "oops");
	+	int *x = 0;
	+	*x = 1; /* die */
	+
	 	while (!retries--) {
	 		if (bpf_obj2->bss->called)
	 			break;

Before:

 #281     xdp_metadata:FAIL
Caught signal #11!
Stack trace:
./test_progs(crash_handler+0x1f)[0x55c919d98bcf]
/lib/x86_64-linux-gnu/libc.so.6(+0x3bf90)[0x7f36aea5df90]
./test_progs(test_xdp_metadata+0x1db0)[0x55c919d8c6d0]
./test_progs(+0x23b438)[0x55c919d9a438]
./test_progs(main+0x534)[0x55c919d99454]
/lib/x86_64-linux-gnu/libc.so.6(+0x2718a)[0x7f36aea4918a]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x85)[0x7f36aea49245]
./test_progs(_start+0x21)[0x55c919b82ef1]

After:

test_xdp_metadata:PASS:ip netns add xdp_metadata 0 nsec
open_netns:PASS:malloc token 0 nsec
open_netns:PASS:open /proc/self/ns/net 0 nsec
open_netns:PASS:open netns fd 0 nsec
open_netns:PASS:setns 0 nsec
..
test_xdp_metadata:FAIL:oops unexpected oops: actual 1 != expected 2
 #281     xdp_metadata:FAIL
Caught signal #11!
Stack trace:
./test_progs(crash_handler+0x1f)[0x562714a76bcf]
/lib/x86_64-linux-gnu/libc.so.6(+0x3bf90)[0x7fa663f9cf90]
./test_progs(test_xdp_metadata+0x1db0)[0x562714a6a6d0]
./test_progs(+0x23b438)[0x562714a78438]
./test_progs(main+0x534)[0x562714a77454]
/lib/x86_64-linux-gnu/libc.so.6(+0x2718a)[0x7fa663f8818a]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x85)[0x7fa663f88245]
./test_progs(_start+0x21)[0x562714860ef1]

0: https://github.com/kernel-patches/bpf/actions/runs/4019879316/jobs/6907358876

Signed-off-by: Stanislav Fomichev <sdf@google.com>
Link: https://lore.kernel.org/r/20230127215705.1254316-1-sdf@google.com
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
2023-01-27 15:22:00 -08:00
Grant Seltzer e4ce876f10 libbpf: Add documentation to map pinning API functions
This adds documentation for the following API functions:

- bpf_map__set_pin_path()
- bpf_map__pin_path()
- bpf_map__is_pinned()
- bpf_map__pin()
- bpf_map__unpin()
- bpf_object__pin_maps()
- bpf_object__unpin_maps()

Signed-off-by: Grant Seltzer <grantseltzer@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20230126024225.520685-1-grantseltzer@gmail.com
2023-01-27 23:03:19 +01:00
Grant Seltzer 139df64d26 libbpf: Fix malformed documentation formatting
This fixes the doxygen format documentation above the
user_ring_buffer__* APIs. There has to be a newline
before the @brief, otherwise doxygen won't render them
for libbpf.readthedocs.org.

Signed-off-by: Grant Seltzer <grantseltzer@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20230126024749.522278-1-grantseltzer@gmail.com
2023-01-27 23:02:03 +01:00
Linus Torvalds 37d0be6a7d gpio fixes for v6.2-rc6
- fix the -c option in the gpio-event-mode user-space example program
 - fix the irq number translation in gpio-ep93xx and make its irqchip immutable
 - add a missing spin_unlock in error path in gpio-mxc
 - fix a suspend breakage on System76 and Lenovo Gen2a introduced in GPIO ACPI
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Merge tag 'gpio-fixes-for-v6.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

Pull gpio fixes from Bartosz Golaszewski:

 - fix the -c option in the gpio-event-mode user-space example program

 - fix the irq number translation in gpio-ep93xx and make its irqchip
   immutable

 - add a missing spin_unlock in error path in gpio-mxc

 - fix a suspend breakage on System76 and Lenovo Gen2a introduced in
   GPIO ACPI

* tag 'gpio-fixes-for-v6.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
  tools: gpio: fix -c option of gpio-event-mon
  gpio: ep93xx: remove unused variable
  gpio: ep93xx: Make irqchip immutable
  gpio: ep93xx: Fix port F hwirq numbers in handler
  gpio: mxc: Unlock on error path in mxc_flip_edge()
  gpiolib-acpi: Don't set GPIOs for wakeup in S3 mode
2023-01-27 13:47:40 -08:00
Linus Torvalds 9f4d0bd24e linux-kselftest-fixes-6.2-rc6
This Kselftest fixes update for Linux 6.2-rc6 consists of a single
 fix to a amd-pstate test Makefile bug that deletes source files
 during make clean run.
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Merge tag 'linux-kselftest-fixes-6.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull Kselftest fixes from Shuah Khan:
 "A single fix to a amd-pstate test Makefile bug that deletes source
  files during make clean run"

* tag 'linux-kselftest-fixes-6.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests: amd-pstate: Don't delete source files via Makefile
2023-01-27 12:41:09 -08:00
Ivo Borisov Shopov 677d85e1a1 tools: gpio: fix -c option of gpio-event-mon
Following line should listen for a rising edge and exit after the first
one since '-c 1' is provided.

    # gpio-event-mon -n gpiochip1 -o 0 -r -c 1

It works with kernel 4.19 but it doesn't work with 5.10. In 5.10 the
above command doesn't exit after the first rising edge it keep listening
for an event forever. The '-c 1' is not taken into an account.
The problem is in commit 62757c32d5 ("tools: gpio: add multi-line
monitoring to gpio-event-mon").
Before this commit the iterator 'i' in monitor_device() is used for
counting of the events (loops). In the case of the above command (-c 1)
we should start from 0 and increment 'i' only ones and hit the 'break'
statement and exit the process. But after the above commit counting
doesn't start from 0, it start from 1 when we listen on one line.
It is because 'i' is used from one more purpose, counting of lines
(num_lines) and it isn't restore to 0 after following code

    for (i = 0; i < num_lines; i++)
        gpiotools_set_bit(&values.mask, i);

Restore the initial value of the iterator to 0 in order to allow counting
of loops to work for any cases.

Fixes: 62757c32d5 ("tools: gpio: add multi-line monitoring to gpio-event-mon")
Signed-off-by: Ivo Borisov Shopov <ivoshopov@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
[Bartosz: tweak the commit message]
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2023-01-27 14:05:46 +01:00
Shunsuke Mie 3f7b75abf4 tools/virtio: fix the vringh test for virtio ring changes
Fix the build caused by missing kmsan_handle_dma() and is_power_of_2() that
are used in drivers/virtio/virtio_ring.c.

Signed-off-by: Shunsuke Mie <mie@igel.co.jp>
Message-Id: <20230110034310.779744-1-mie@igel.co.jp>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2023-01-27 06:18:41 -05:00
Stanislav Fomichev a5f3a3f7c1 selftests/bpf: Properly enable hwtstamp in xdp_hw_metadata
The existing timestamping_enable() is a no-op because it applies
to the socket-related path that we are not verifying here
anymore. (but still leaving the code around hoping we can
have xdp->skb path verified here as well)

  poll: 1 (0)
  xsk_ring_cons__peek: 1
  0xf64788: rx_desc[0]->addr=100000000008000 addr=8100 comp_addr=8000
  rx_hash: 3697961069
  rx_timestamp:  1674657672142214773 (sec:1674657672.1422)
  XDP RX-time:   1674657709561774876 (sec:1674657709.5618) delta sec:37.4196
  AF_XDP time:   1674657709561871034 (sec:1674657709.5619) delta
sec:0.0001 (96.158 usec)
  0xf64788: complete idx=8 addr=8000

Also, maybe something to archive here, see [0] for Jesper's note
about NIC vs host clock delta.

0: https://lore.kernel.org/bpf/f3a116dc-1b14-3432-ad20-a36179ef0608@redhat.com/

v2:
- Restore original value (Martin)

Fixes: 297a3f1241 ("selftests/bpf: Simple program to dump XDP RX metadata")
Reported-by: Jesper Dangaard Brouer <jbrouer@redhat.com>
Tested-by: Jesper Dangaard Brouer <jbrouer@redhat.com>
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Link: https://lore.kernel.org/r/20230126225030.510629-1-sdf@google.com
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
2023-01-26 22:10:31 -08:00
Jakub Kicinski 3a43ded081 tools: ynl: store ops in ordered dict to avoid random ordering
When rendering code we should walk the ops in the order in which
they are declared in the spec. This is both more intuitive and
prevents code from jumping around when hashing in the dict changes.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-01-26 16:32:41 -08:00
Jakub Kicinski b49c34e217 tools: ynl: rename ops_list -> msg_list
ops_list contains all the operations, but the main iteration use
case is to walk only ops which define attrs. Rename ops_list to
msg_list, because now it looks like the contents are the same,
just the format is different. While at it convert from tuple
to just keys, none of the users care about the name of the op.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-01-26 16:32:41 -08:00
Jakub Kicinski 66fa34b9c2 tools: ynl: support kdocs for flags in code generation
Lorenzo reports that after switching from enum to flags netdev
family lost ability to render kdoc (and the enum contents got
generally garbled).

Combine the flags and enum handling in uAPI handling.

Reported-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-01-26 16:32:41 -08:00
Matthieu Baerts 8dbdf24f4e selftests: mptcp: userspace: avoid read errors
During the cleanup phase, the server pids were killed with a SIGTERM
directly, not using a SIGUSR1 first to quit safely. As a result, this
test was often ending with two error messages:

  read: Connection reset by peer

While at it, use a for-loop to terminate all the PIDs the same way.

Also the different files are now removed after having killed the PIDs
using them. It makes more sense to do that in this order.

Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-01-26 13:33:30 +01:00
Matthieu Baerts 10d4273411 selftests: mptcp: userspace: print error details if any
Before, only '[FAIL]' was printed in case of error during the validation
phase.

Now, in case of failure, the variable name, its value and expected one
are displayed to help understand what was wrong.

Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-01-26 13:33:30 +01:00
Matthieu Baerts 1c0b0ee264 selftests: mptcp: userspace: refactor asserts
Instead of having a long list of conditions to check, it is possible to
give a list of variable names to compare with their 'e_XXX' version.

This will ease the introduction of the following commit which will print
which condition has failed (if any).

Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-01-26 13:33:30 +01:00
Matthieu Baerts f790ae03db selftests: mptcp: userspace: print titles
This script is running a few tests after having setup the environment.

Printing titles helps understand what is being tested.

Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-01-26 13:33:30 +01:00