Connect two netdevsim ports in different namespaces together, then send
packets between them using socat.
Signed-off-by: David Wei <dw@davidwei.uk>
Reviewed-by: Maciek Machnikowski <maciek@machnikowski.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add an implementation for ndo_get_iflink() in netdevsim that shows the
ifindex of the linked peer, if any.
Signed-off-by: David Wei <dw@davidwei.uk>
Reviewed-by: Maciek Machnikowski <maciek@machnikowski.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Forward skbs sent from one netdevsim port to its connected netdevsim
port using dev_forward_skb, in a spirit similar to veth.
Add a tx_dropped variable to struct netdevsim, tracking the number of
skbs that could not be forwarded using dev_forward_skb().
The xmit() function accessing the peer ptr is protected by an RCU read
critical section. The rcu_read_lock() is functionally redundant as since
v5.0 all softirqs are implicitly RCU read critical sections; but it is
useful for human readers.
If another CPU is concurrently in nsim_destroy(), then it will first set
the peer ptr to NULL. This does not affect any existing readers that
dereferenced a non-NULL peer. Then, in unregister_netdevice(), there is
a synchronize_rcu() before the netdev is actually unregistered and
freed. This ensures that any readers i.e. xmit() that got a non-NULL
peer will complete before the netdev is freed.
Any readers after the RCU_INIT_POINTER() but before synchronize_rcu()
will dereference NULL, making it safe.
The codepath to nsim_destroy() and nsim_create() takes both the newly
added nsim_dev_list_lock and rtnl_lock. This makes it safe with
concurrent calls to linking two netdevsims together.
Signed-off-by: David Wei <dw@davidwei.uk>
Reviewed-by: Maciek Machnikowski <maciek@machnikowski.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add two netdevsim bus attribute to sysfs:
/sys/bus/netdevsim/link_device
/sys/bus/netdevsim/unlink_device
Writing "A M B N" to link_device will link netdevsim M in netnsid A with
netdevsim N in netnsid B.
Writing "A M" to unlink_device will unlink netdevsim M in netnsid A from
its peer, if any.
rtnl_lock is taken to ensure nothing changes during the linking.
Signed-off-by: David Wei <dw@davidwei.uk>
Reviewed-by: Maciek Machnikowski <maciek@machnikowski.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jakub Kicinski says:
====================
selftests: kselftest_harness: support using xfail
When running selftests for our subsystem in our CI we'd like all
tests to pass. Currently some tests use SKIP for cases they
expect to fail, because the kselftest_harness limits the return
codes to pass/fail/skip. XFAIL which would be a great match
here cannot be used.
Remove the no_print handling and use vfork() to run the test in
a different process than the setup. This way we don't need to
pass "failing step" via the exit code. Further clean up the exit
codes so that we can use all KSFT_* values. Rewrite the result
printing to make handling XFAIL/XPASS easier. Support tests
declaring combinations of fixture + variant they expect to fail.
Merge plan is to put it on top of -rc6 and merge into net-next.
That way others should be able to pull the patches without
any networking changes.
v4:
- rebase on top of Mickael's vfork() changes
v3: https://lore.kernel.org/all/20240220192235.2953484-1-kuba@kernel.org/
- combine multiple series
- change to "list of expected failures" rather than SKIP()-like handling
v2: https://lore.kernel.org/all/20240216002619.1999225-1-kuba@kernel.org/
- fix alignment
follow up RFC: https://lore.kernel.org/all/20240216004122.2004689-1-kuba@kernel.org/
v1: https://lore.kernel.org/all/20240213154416.422739-1-kuba@kernel.org/
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
SCTP does not support IP_LOCAL_PORT_RANGE and we know it,
so use XFAIL instead of SKIP.
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Currently some tests report skip for things they expect to fail
e.g. when given combination of parameters is known to be unsupported.
This is confusing because in an ideal test environment and fully
featured kernel no tests should be skipped.
Selftest summary line already includes xfail and xpass counters,
e.g.:
Totals: pass:725 fail:0 xfail:0 xpass:0 skip:0 error:0
but there's no way to use it from within the harness.
Add a new per-fixture+variant combination list of test cases
we expect to fail.
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Switch to printing KTAP line for PASS / FAIL with ksft_test_result_code(),
this gives us the ability to report diagnostic messages.
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
According to the spec we should always print a # if we add
a diagnostic message. Having the caller pass in the new line
as part of diagnostic message makes handling this a bit
counter-intuitive, so append the new line in the helper.
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
For generic test harness code it's more useful to deal with exit
codes directly, rather than having to switch on them and call
the right ksft_test_result_*() helper. Add such function to kselftest.h.
Note that "directive" and "diagnostic" are what ktap docs call
those parts of the message.
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
We always use skip in combination with exit_code being 0
(KSFT_PASS). This are basic KSFT / KTAP semantics.
Store the right KSFT_* code in exit_code directly.
This makes it easier to support tests reporting other
extended KSFT_* codes like XFAIL / XPASS.
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Instead of tracking passed = 0/1 rename the field to exit_code
and invert the values so that they match the KSFT_* exit codes.
This will allow us to fold SKIP / XFAIL into the same value.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Since we added variant support generating full test case
name takes 4 string arguments. We're about to need it
in another two places. Stop the duplication and print
once into a temporary buffer.
Suggested-by: Jakub Sitnicki <jakub@cloudflare.com>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Replace Landlock-specific TEST_F_FORK() with an improved TEST_F() which
brings four related changes:
Run TEST_F()'s tests in a grandchild process to make it possible to
drop privileges and delegate teardown to the parent.
Compared to TEST_F_FORK(), simplify handling of the test grandchild
process thanks to vfork(2), and makes it generic (e.g. no explicit
conversion between exit code and _metadata).
Compared to TEST_F_FORK(), run teardown even when tests failed with an
assert thanks to commit 63e6b2a423 ("selftests/harness: Run TEARDOWN
for ASSERT failures").
Simplify the test harness code by removing the no_print and step fields
which are not used. I added this feature just after I made
kselftest_harness.h more broadly available but this step counter
remained even though it wasn't needed after all. See commit 369130b631
("selftests: Enhance kselftest_harness.h to print which assert failed").
Replace spaces with tabs in one line of __TEST_F_IMPL().
Cc: Günther Noack <gnoack@google.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Will Drewry <wad@chromium.org>
Signed-off-by: Mickaël Salaün <mic@digikod.net>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This has the effect of creating a new test process for either TEST_F()
or TEST_F_FORK(), which doesn't change tests but will ease potential
backports. See next commit for the TEST_F_FORK() merge into TEST_F().
Cc: Günther Noack <gnoack@google.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Will Drewry <wad@chromium.org>
Signed-off-by: Mickaël Salaün <mic@digikod.net>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Justin Chen says:
====================
Support for ASP 2.2 and optimizations
ASP 2.2 adds some power savings during low power modes.
Also make various improvements when entering low power modes and
reduce MDIO traffic by hooking up interrupts.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
There is no advantage of freeing and re-allocating buffers through
suspend and resume. This waste cycles and makes suspend/resume time
longer. We also open ourselves to failed allocations in systems with
heavy memory fragmentation.
Signed-off-by: Justin Chen <justin.chen@broadcom.com>
Acked-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
ASP 2.2 improves power savings during low power modes.
A new register was added to toggle to a slower clock during low
power modes.
EEE was broken for ASP 2.0/2.1. A HW workaround was added for
ASP 2.2 that requires toggling a chicken bit.
Signed-off-by: Justin Chen <justin.chen@broadcom.com>
Acked-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Robert Marko says:
====================
net: phy: qcom: qca808x: fill in possible_interfaces
QCA808x does not currently fill in the possible_interfaces.
This leads to Phylink not being aware that it supports 2500Base-X as well
so in cases where it is connected to a DSA switch like MV88E6393 it will
limit that port to phy-mode set in the DTS.
That means that if SGMII is used you are limited to 1G only while if
2500Base-X was set you are limited to 2.5G only.
Populating the possible_interfaces fixes this.
Changes in v2:
* Get rid of the if/else by Russels suggestion in the helper
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Currently QCA808x driver does not fill the possible_interfaces.
2.5G QCA808x support SGMII and 2500Base-X while 1G model only supports
SGMII, so fill the possible_interfaces accordingly.
Signed-off-by: Robert Marko <robimarko@gmail.com>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
There are 2 versions of QCA808x, one 2.5G capable and one 1G capable.
Currently, this matter only in the .get_features call however, it will
be required for filling supported interface modes so lets add a helper
that can be reused.
Signed-off-by: Robert Marko <robimarko@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
There is no need to wrap calls to the no_printk() helper inside an
always-false check, as no_printk() already does that internally.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet says:
====================
ipv6: lockless accesses to devconf
- First patch puts in a cacheline_group the fields used in fast paths.
- Annotate all data races around idev->cnf fields.
- Last patch in this series removes RTNL use for RTM_GETNETCONF dumps.
v3: addressed Jakub Kicinski feedback in addrconf_disable_ipv6()
Added tags from Jiri and Florian.
v2: addressed Jiri Pirko feedback
- Added "ipv6: addrconf_disable_ipv6() optimizations"
and "ipv6: addrconf_disable_policy() optimization"
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
1) inet6_netconf_dump_devconf() can run under RCU protection
instead of RTNL.
2) properly return 0 at the end of a dump, avoiding an
an extra recvmsg() system call.
3) Do not use inet6_base_seq() anymore, for_each_netdev_dump()
has nice properties. Restarting a GETDEVCONF dump if a device has
been added/removed or if net->ipv6.dev_addr_genid has changed is moot.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Writing over /proc/sys/net/ipv6/conf/default/disable_policy
does not need to hold RTNL.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
idev->cnf.disable_policy and net->ipv6.devconf_all->disable_policy
can be read locklessly. Add appropriate annotations on reads
and writes.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
devconf->proxy_ndp can be read and written locklessly,
add appropriate annotations.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Use READ_ONCE() while reading idev->cnf.rtr_probe_interval
while its value could be changed.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
idev->cnf.ignore_routes_with_linkdown can be used without any locks,
add appropriate annotations.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Annotate reads from in6_dev->cnf.XXX fields, as they could
change concurrently.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
idev->cnf.forwarding and net->ipv6.devconf_all->forwarding
might be read locklessly, add appropriate READ_ONCE()
and WRITE_ONCE() annotations.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
idev->cnf.hop_limit and net->ipv6.devconf_all->hop_limit
might be read locklessly, add appropriate READ_ONCE()
and WRITE_ONCE() annotations.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Florian Westphal <fw@strlen.de> # for netfilter parts
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
idev->cnf.mtu6 might be read locklessly, add appropriate READ_ONCE()
and WRITE_ONCE() annotations.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Writing over /proc/sys/net/ipv6/conf/default/disable_ipv6
does not need to hold RTNL.
v3: remove a wrong change (Jakub Kicinski feedback)
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
disable_ipv6 is read locklessly, add appropriate READ_ONCE()
and WRITE_ONCE() annotations.
v2: do not preload net before rtnl_trylock() in
addrconf_disable_ipv6() (Jiri)
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
IPv6 TX and RX fast path use the following fields:
- disable_ipv6
- hop_limit
- mtu6
- forwarding
- disable_policy
- proxy_ndp
Place them in a group to increase data locality.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull networking fixes from Jakub Kicinski:
"Including fixes from bluetooth, WiFi and netfilter.
We have one outstanding issue with the stmmac driver, which may be a
LOCKDEP false positive, not a blocker.
Current release - regressions:
- netfilter: nf_tables: re-allow NFPROTO_INET in
nft_(match/target)_validate()
- eth: ionic: fix error handling in PCI reset code
Current release - new code bugs:
- eth: stmmac: complete meta data only when enabled, fix null-deref
- kunit: fix again checksum tests on big endian CPUs
Previous releases - regressions:
- veth: try harder when allocating queue memory
- Bluetooth:
- hci_bcm4377: do not mark valid bd_addr as invalid
- hci_event: fix handling of HCI_EV_IO_CAPA_REQUEST
Previous releases - always broken:
- info leak in __skb_datagram_iter() on netlink socket
- mptcp:
- map v4 address to v6 when destroying subflow
- fix potential wake-up event loss due to sndbuf auto-tuning
- fix double-free on socket dismantle
- wifi: nl80211: reject iftype change with mesh ID change
- fix small out-of-bound read when validating netlink be16/32 types
- rtnetlink: fix error logic of IFLA_BRIDGE_FLAGS writing back
- ipv6: fix potential "struct net" ref-leak in inet6_rtm_getaddr()
- ip_tunnel: prevent perpetual headroom growth with huge number of
tunnels on top of each other
- mctp: fix skb leaks on error paths of mctp_local_output()
- eth: ice: fixes for DPLL state reporting
- dpll: rely on rcu for netdev_dpll_pin() to prevent UaF
- eth: dpaa: accept phy-interface-type = '10gbase-r' in the device
tree"
* tag 'net-6.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (73 commits)
dpll: fix build failure due to rcu_dereference_check() on unknown type
kunit: Fix again checksum tests on big endian CPUs
tls: fix use-after-free on failed backlog decryption
tls: separate no-async decryption request handling from async
tls: fix peeking with sync+async decryption
tls: decrement decrypt_pending if no async completion will be called
gtp: fix use-after-free and null-ptr-deref in gtp_newlink()
net: hsr: Use correct offset for HSR TLV values in supervisory HSR frames
igb: extend PTP timestamp adjustments to i211
rtnetlink: fix error logic of IFLA_BRIDGE_FLAGS writing back
tools: ynl: fix handling of multiple mcast groups
selftests: netfilter: add bridge conntrack + multicast test case
netfilter: bridge: confirm multicast packets before passing them up the stack
netfilter: nf_tables: allow NFPROTO_INET in nft_(match/target)_validate()
Bluetooth: qca: Fix triggering coredump implementation
Bluetooth: hci_qca: Set BDA quirk bit if fwnode exists in DT
Bluetooth: qca: Fix wrong event type for patch config command
Bluetooth: Enforce validation on max value of connection interval
Bluetooth: hci_event: Fix handling of HCI_EV_IO_CAPA_REQUEST
Bluetooth: mgmt: Fix limited discoverable off timeout
...
Pull Landlock fix from Mickaël Salaün:
"Fix a potential issue when handling inodes with inconsistent
properties"
* tag 'landlock-6.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux:
landlock: Fix asymmetric private inodes referring
Luiz Augusto von Dentz says:
====================
bluetooth pull request for net:
- mgmt: Fix limited discoverable off timeout
- hci_qca: Set BDA quirk bit if fwnode exists in DT
- hci_bcm4377: do not mark valid bd_addr as invalid
- hci_sync: Check the correct flag before starting a scan
- Enforce validation on max value of connection interval
- hci_sync: Fix accept_list when attempting to suspend
- hci_event: Fix handling of HCI_EV_IO_CAPA_REQUEST
- Avoid potential use-after-free in hci_error_reset
- rfcomm: Fix null-ptr-deref in rfcomm_check_security
- hci_event: Fix wrongly recorded wakeup BD_ADDR
- qca: Fix wrong event type for patch config command
- qca: Fix triggering coredump implementation
* tag 'for-net-2024-02-28' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth:
Bluetooth: qca: Fix triggering coredump implementation
Bluetooth: hci_qca: Set BDA quirk bit if fwnode exists in DT
Bluetooth: qca: Fix wrong event type for patch config command
Bluetooth: Enforce validation on max value of connection interval
Bluetooth: hci_event: Fix handling of HCI_EV_IO_CAPA_REQUEST
Bluetooth: mgmt: Fix limited discoverable off timeout
Bluetooth: hci_event: Fix wrongly recorded wakeup BD_ADDR
Bluetooth: rfcomm: Fix null-ptr-deref in rfcomm_check_security
Bluetooth: hci_sync: Fix accept_list when attempting to suspend
Bluetooth: Avoid potential use-after-free in hci_error_reset
Bluetooth: hci_sync: Check the correct flag before starting a scan
Bluetooth: hci_bcm4377: do not mark valid bd_addr as invalid
====================
Link: https://lore.kernel.org/r/20240228145644.2269088-1-luiz.dentz@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
