selftests: Add IPv6 link-local address generation tests for GRE devices.

GRE devices have their special code for IPv6 link-local address
generation that has been the source of several regressions in

selftests: Add IPv6 link-local address generation tests for GRE devices.

GRE devices have their special code for IPv6 link-local address
generation that has been the source of several regressions in the past.

Add selftest to check that all gre, ip6gre, gretap and ip6gretap get an
IPv6 link-link local address in accordance with the
net.ipv6.conf.<dev>.addr_gen_mode sysctl.

Note: This patch was originally applied as commit 6f50175ccad4 ("selftests:
Add IPv6 link-local address generation tests for GRE devices.").
However, it was then reverted by commit 355d940f4d5a ("Revert "selftests:
Add IPv6 link-local address generation tests for GRE devices."")
because the commit it depended on was going to be reverted. Now that
the situation is resolved, we can add this selftest again (no changes
since original patch, appart from context update in
tools/testing/selftests/net/Makefile).
Signed-off-by: Guillaume Nault <[email protected]>
Reviewed-by: Ido Schimmel <[email protected]>
Tested-by: Ido Schimmel <[email protected]>
Link: https://patch.msgid.link/2c3a5733cb3a6e3119504361a9b9f89fda570a2d.1746225214.git.gnault@redhat.com
Signed-off-by: Jakub Kicinski <[email protected]>

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selftests/net: test sk_filter support for SKF_NET_OFF on frags

Verify that a classic BPF linux socket filter correctly matches
packet contents. Including when accessing contents in an
skb_frag.

1.

selftests/net: test sk_filter support for SKF_NET_OFF on frags

Verify that a classic BPF linux socket filter correctly matches
packet contents. Including when accessing contents in an
skb_frag.

1. Open a SOCK_RAW socket with a classic BPF filter on UDP dport 8000.
2. Open a tap device with IFF_NAPI_FRAGS to inject skbs with frags.
3. Send a packet for which the UDP header is in frag[0].
4. Receive this packet to demonstrate that the socket accepted it.

Acked-by: Stanislav Fomichev <[email protected]>
Signed-off-by: Willem de Bruijn <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Alexei Starovoitov <[email protected]>

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Revert "selftests: Add IPv6 link-local address generation tests for GRE devices."

This reverts commit 6f50175ccad4278ed3a9394c00b797b75441bd6e.

Commit 183185a18ff9 ("gre: Fix IPv6 link-local addres

Revert "selftests: Add IPv6 link-local address generation tests for GRE devices."

This reverts commit 6f50175ccad4278ed3a9394c00b797b75441bd6e.

Commit 183185a18ff9 ("gre: Fix IPv6 link-local address generation.") is
going to be reverted. So let's revert the corresponding kselftest
first.

Signed-off-by: Guillaume Nault <[email protected]>
Link: https://patch.msgid.link/259a9e98f7f1be7ce02b53d0b4afb7c18a8ff747.1742418408.git.gnault@redhat.com
Acked-by: Stanislav Fomichev <[email protected]>
Signed-off-by: Paolo Abeni <[email protected]>

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selftests: net: test for lwtunnel dst ref loops

As recently specified by commit 0ea09cbf8350 ("docs: netdev: add a note
on selftest posting") in net-next, the selftest is therefore shipped in
this s

selftests: net: test for lwtunnel dst ref loops

As recently specified by commit 0ea09cbf8350 ("docs: netdev: add a note
on selftest posting") in net-next, the selftest is therefore shipped in
this series. However, this selftest does not really test this series. It
needs this series to avoid crashing the kernel. What it really tests,
thanks to kmemleak, is what was fixed by the following commits:
- commit c71a192976de ("net: ipv6: fix dst refleaks in rpl, seg6 and
ioam6 lwtunnels")
- commit 92191dd10730 ("net: ipv6: fix dst ref loops in rpl, seg6 and
ioam6 lwtunnels")
- commit c64a0727f9b1 ("net: ipv6: fix dst ref loop on input in seg6
lwt")
- commit 13e55fbaec17 ("net: ipv6: fix dst ref loop on input in rpl
lwt")
- commit 0e7633d7b95b ("net: ipv6: fix dst ref loop in ila lwtunnel")
- commit 5da15a9c11c1 ("net: ipv6: fix missing dst ref drop in ila
lwtunnel")

Signed-off-by: Justin Iurman <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Paolo Abeni <[email protected]>

show more ...

selftests: Add IPv6 link-local address generation tests for GRE devices.

GRE devices have their special code for IPv6 link-local address
generation that has been the source of several regressions in

selftests: Add IPv6 link-local address generation tests for GRE devices.

GRE devices have their special code for IPv6 link-local address
generation that has been the source of several regressions in the past.

Add selftest to check that all gre, ip6gre, gretap and ip6gretap get an
IPv6 link-link local address in accordance with the
net.ipv6.conf.<dev>.addr_gen_mode sysctl.

Signed-off-by: Guillaume Nault <[email protected]>
Reviewed-by: Ido Schimmel <[email protected]>
Tested-by: Ido Schimmel <[email protected]>
Reviewed-by: Petr Machata <[email protected]>
Link: https://patch.msgid.link/2d6772af8e1da9016b2180ec3f8d9ee99f470c77.1741375285.git.gnault@redhat.com
Signed-off-by: Paolo Abeni <[email protected]>

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selftest: net: add proc_net_pktgen

Add some test for /proc/net/pktgen/... interface.

- enable 'CONFIG_NET_PKTGEN=m' in tools/testing/selftests/net/config

Signed-off-by: Peter Seiderer <ps.report@g

selftest: net: add proc_net_pktgen

Add some test for /proc/net/pktgen/... interface.

- enable 'CONFIG_NET_PKTGEN=m' in tools/testing/selftests/net/config

Signed-off-by: Peter Seiderer <[email protected]>
Reviewed-by: Simon Horman <[email protected]>
Signed-off-by: Paolo Abeni <[email protected]>

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selftests/net: expand cmsg_ipv6.sh with ipv4

Expand IPV6_TCLASS to also cover IP_TOS.
Expand IPV6_HOPLIMIT to also cover IP_TTL.

Expand csmg_sender.c to allow setting IPv4 setsockopts.
Also rename

selftests/net: expand cmsg_ipv6.sh with ipv4

Expand IPV6_TCLASS to also cover IP_TOS.
Expand IPV6_HOPLIMIT to also cover IP_TTL.

Expand csmg_sender.c to allow setting IPv4 setsockopts.
Also rename struct v6 to cmsg to match its expanded scope.
Don't bother updating all occurrences of tclass and hoplimit.

Rename cmsg_ipv6.sh to cmsg_ip.sh to match the expanded scope.

Be careful around the subtle API difference between TCLASS and TOS.
IP_TOS includes ECN bits. Add a test to verify that these are masked
when making routing decisions.

Diff is more concise with --word-diff

Signed-off-by: Willem de Bruijn <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

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selftests: net: Add test cases for link and peer netns

- Add test for creating link in another netns when a link of the same
name and ifindex exists in current netns.
- Add test to verify that l

selftests: net: Add test cases for link and peer netns

- Add test for creating link in another netns when a link of the same
name and ifindex exists in current netns.
- Add test to verify that link is created in target netns directly -
no link new/del events should be generated in link netns or current
netns.
- Add test cases to verify that link-netns is set as expected for
various drivers and combination of namespace-related parameters.

Signed-off-by: Xiao Liang <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

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selftests: net: add support for testing SO_RCVMARK and SO_RCVPRIORITY

Introduce tests to verify the correct functionality of the SO_RCVMARK and
SO_RCVPRIORITY socket options.

Suggested-by: Jakub Ki

selftests: net: add support for testing SO_RCVMARK and SO_RCVPRIORITY

Introduce tests to verify the correct functionality of the SO_RCVMARK and
SO_RCVPRIORITY socket options.

Suggested-by: Jakub Kicinski <[email protected]>
Suggested-by: Ferenc Fejes <[email protected]>
Signed-off-by: Anna Emese Nyiri <[email protected]>
Reviewed-by: Willem de Bruijn <[email protected]>
Reviewed-by: Ido Schimmel <[email protected]>
Tested-by: Ido Schimmel <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

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blackhole_dev: convert self-test to KUnit

Convert this very simple smoke test to a KUnit test.

Add a missing `htons` call that was spotted[0] by kernel test robot
<[email protected]> after initial conv

blackhole_dev: convert self-test to KUnit

Convert this very simple smoke test to a KUnit test.

Add a missing `htons` call that was spotted[0] by kernel test robot
<[email protected]> after initial conversion to KUnit.

Link: https://lore.kernel.org/oe-kbuild-all/[email protected]/ [0]
Signed-off-by: Tamir Duberstein <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

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selftests/net: Add selftest for IPv4 RTM_GETMULTICAST support

This change introduces a new selftest case to verify the functionality
of dumping IPv4 multicast addresses using the RTM_GETMULTICAST ne

selftests/net: Add selftest for IPv4 RTM_GETMULTICAST support

This change introduces a new selftest case to verify the functionality
of dumping IPv4 multicast addresses using the RTM_GETMULTICAST netlink
message. The test utilizes the ynl library to interact with the
netlink interface and validate that the kernel correctly reports the
joined IPv4 multicast addresses.

To run the test, execute the following command:

$ vng -v --user root --cpus 16 -- \
make -C tools/testing/selftests TARGETS=net \
TEST_PROGS=rtnetlink.py TEST_GEN_PROGS="" run_tests

Cc: Maciej Żenczykowski <[email protected]>
Cc: Lorenzo Colitti <[email protected]>
Signed-off-by: Yuyang Huang <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Paolo Abeni <[email protected]>

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selftests: net: Add a VLAN bridge binding selftest

Add a test that exercises bridge binding.

Signed-off-by: Petr Machata <[email protected]>
Reviewed-by: Ido Schimmel <[email protected]>
Acked-by: N

selftests: net: Add a VLAN bridge binding selftest

Add a test that exercises bridge binding.

Signed-off-by: Petr Machata <[email protected]>
Reviewed-by: Ido Schimmel <[email protected]>
Acked-by: Nikolay Aleksandrov <[email protected]>
Link: https://patch.msgid.link/baf7244fd1fe223a6d93e027584fa9f99dee982c.1734540770.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <[email protected]>

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selftests: net: test SO_PRIORITY ancillary data with cmsg_sender

Extend cmsg_sender.c with a new option '-Q' to send SO_PRIORITY
ancillary data.

cmsg_so_priority.sh script added to validate SO_PRIO

selftests: net: test SO_PRIORITY ancillary data with cmsg_sender

Extend cmsg_sender.c with a new option '-Q' to send SO_PRIORITY
ancillary data.

cmsg_so_priority.sh script added to validate SO_PRIORITY behavior
by creating VLAN device with egress QoS mapping and testing packet
priorities using flower filters. Verify that packets with different
priorities are correctly matched and counted by filters for multiple
protocols and IP versions.

Reviewed-by: Willem de Bruijn <[email protected]>
Acked-by: Willem de Bruijn <[email protected]>
Reviewed-by: Ido Schimmel <[email protected]>
Tested-by: Ido Schimmel <[email protected]>
Suggested-by: Ido Schimmel <[email protected]>
Signed-off-by: Anna Emese Nyiri <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

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selftests: net: test extacks in netlink dumps

Test that extacks in dumps work. The test fills up the receive buffer
to test both the inline dump (as part of sendmsg()) and delayed one
(run during re

selftests: net: test extacks in netlink dumps

Test that extacks in dumps work. The test fills up the receive buffer
to test both the inline dump (as part of sendmsg()) and delayed one
(run during recvmsg()).

Use YNL helpers to parse the messages. We need to add the test to YNL
file to make sure the right include path are used.

Reviewed-by: Jacob Keller <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

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selftests: net: fdb_notify: Add a test for FDB notifications

Check that only one notification is produced for various FDB edit
operations.

Regarding the ip_link_add() and ip_link_master() helpers.

selftests: net: fdb_notify: Add a test for FDB notifications

Check that only one notification is produced for various FDB edit
operations.

Regarding the ip_link_add() and ip_link_master() helpers. This pattern of
action plus corresponding defer is bound to come up often, and a dedicated
vocabulary to capture it will be handy. tunnel_create() and vlan_create()
from forwarding/lib.sh are somewhat opaque and perhaps too kitchen-sinky,
so I tried to go in the opposite direction with these ones, and wrapped
only the bare minimum to schedule a corresponding cleanup.

Signed-off-by: Petr Machata <[email protected]>
Reviewed-by: Amit Cohen <[email protected]>
Acked-by: Shuah Khan <[email protected]>
Link: https://patch.msgid.link/910c5880ae6d3b558d6889cbdba2be690c2615c6.1731589511.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <[email protected]>

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selftests: net: Add busy_poll_test

Add an epoll busy poll test using netdevsim.

This test is comprised of:
- busy_poller (via busy_poller.c)
- busy_poll_test.sh which loads netdevsim, sets up n

selftests: net: Add busy_poll_test

Add an epoll busy poll test using netdevsim.

This test is comprised of:
- busy_poller (via busy_poller.c)
- busy_poll_test.sh which loads netdevsim, sets up network namespaces,
and runs busy_poller to receive data and socat to send data.

The selftest tests two different scenarios:
- busy poll (the pre-existing version in the kernel)
- busy poll with suspend enabled (what this series adds)

The data transmit is a 1MiB temporary file generated from /dev/urandom
and the test is considered passing if the md5sum of the input file to
socat matches the md5sum of the output file from busy_poller.

netdevsim was chosen instead of veth due to netdevsim's support for
netdev-genl.

For now, this test uses the functionality that netdevsim provides. In the
future, perhaps netdevsim can be extended to emulate device IRQs to more
thoroughly test all pre-existing kernel options (like defer_hard_irqs)
and suspend.

Signed-off-by: Joe Damato <[email protected]>
Co-developed-by: Martin Karsten <[email protected]>
Signed-off-by: Martin Karsten <[email protected]>
Acked-by: Stanislav Fomichev <[email protected]>
Reviewed-by: Willem de Bruijn <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

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selftests: ncdevmem: Move ncdevmem under drivers/net/hw

This is where all the tests that depend on the HW functionality live in
and this is where the automated test is gonna be added in the next
pat

selftests: ncdevmem: Move ncdevmem under drivers/net/hw

This is where all the tests that depend on the HW functionality live in
and this is where the automated test is gonna be added in the next
patch.

Reviewed-by: Mina Almasry <[email protected]>
Signed-off-by: Stanislav Fomichev <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

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selftests: ncdevmem: Use YNL to enable TCP header split

In the next patch the hard-coded queue numbers are gonna be removed.
So introduce some initial support for ethtool YNL and use
it to enable he

selftests: ncdevmem: Use YNL to enable TCP header split

In the next patch the hard-coded queue numbers are gonna be removed.
So introduce some initial support for ethtool YNL and use
it to enable header split.

Also, tcp-data-split requires latest ethtool which is unlikely
to be present in the distros right now.

(ideally, we should not shell out to ethtool at all).

Reviewed-by: Mina Almasry <[email protected]>
Reviewed-by: Joe Damato <[email protected]>
Signed-off-by: Stanislav Fomichev <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

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ipv6: Fix soft lockups in fib6_select_path under high next hop churn

Soft lockups have been observed on a cluster of Linux-based edge routers
located in a highly dynamic environment. Using the `bird

ipv6: Fix soft lockups in fib6_select_path under high next hop churn

Soft lockups have been observed on a cluster of Linux-based edge routers
located in a highly dynamic environment. Using the `bird` service, these
routers continuously update BGP-advertised routes due to frequently
changing nexthop destinations, while also managing significant IPv6
traffic. The lockups occur during the traversal of the multipath
circular linked-list in the `fib6_select_path` function, particularly
while iterating through the siblings in the list. The issue typically
arises when the nodes of the linked list are unexpectedly deleted
concurrently on a different core—indicated by their 'next' and
'previous' elements pointing back to the node itself and their reference
count dropping to zero. This results in an infinite loop, leading to a
soft lockup that triggers a system panic via the watchdog timer.

Apply RCU primitives in the problematic code sections to resolve the
issue. Where necessary, update the references to fib6_siblings to
annotate or use the RCU APIs.

Include a test script that reproduces the issue. The script
periodically updates the routing table while generating a heavy load
of outgoing IPv6 traffic through multiple iperf3 clients. It
consistently induces infinite soft lockups within a couple of minutes.

Kernel log:

0 [ffffbd13003e8d30] machine_kexec at ffffffff8ceaf3eb
1 [ffffbd13003e8d90] __crash_kexec at ffffffff8d0120e3
2 [ffffbd13003e8e58] panic at ffffffff8cef65d4
3 [ffffbd13003e8ed8] watchdog_timer_fn at ffffffff8d05cb03
4 [ffffbd13003e8f08] __hrtimer_run_queues at ffffffff8cfec62f
5 [ffffbd13003e8f70] hrtimer_interrupt at ffffffff8cfed756
6 [ffffbd13003e8fd0] __sysvec_apic_timer_interrupt at ffffffff8cea01af
7 [ffffbd13003e8ff0] sysvec_apic_timer_interrupt at ffffffff8df1b83d
-- <IRQ stack> --
8 [ffffbd13003d3708] asm_sysvec_apic_timer_interrupt at ffffffff8e000ecb
[exception RIP: fib6_select_path+299]
RIP: ffffffff8ddafe7b RSP: ffffbd13003d37b8 RFLAGS: 00000287
RAX: ffff975850b43600 RBX: ffff975850b40200 RCX: 0000000000000000
RDX: 000000003fffffff RSI: 0000000051d383e4 RDI: ffff975850b43618
RBP: ffffbd13003d3800 R8: 0000000000000000 R9: ffff975850b40200
R10: 0000000000000000 R11: 0000000000000000 R12: ffffbd13003d3830
R13: ffff975850b436a8 R14: ffff975850b43600 R15: 0000000000000007
ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018
9 [ffffbd13003d3808] ip6_pol_route at ffffffff8ddb030c
10 [ffffbd13003d3888] ip6_pol_route_input at ffffffff8ddb068c
11 [ffffbd13003d3898] fib6_rule_lookup at ffffffff8ddf02b5
12 [ffffbd13003d3928] ip6_route_input at ffffffff8ddb0f47
13 [ffffbd13003d3a18] ip6_rcv_finish_core.constprop.0 at ffffffff8dd950d0
14 [ffffbd13003d3a30] ip6_list_rcv_finish.constprop.0 at ffffffff8dd96274
15 [ffffbd13003d3a98] ip6_sublist_rcv at ffffffff8dd96474
16 [ffffbd13003d3af8] ipv6_list_rcv at ffffffff8dd96615
17 [ffffbd13003d3b60] __netif_receive_skb_list_core at ffffffff8dc16fec
18 [ffffbd13003d3be0] netif_receive_skb_list_internal at ffffffff8dc176b3
19 [ffffbd13003d3c50] napi_gro_receive at ffffffff8dc565b9
20 [ffffbd13003d3c80] ice_receive_skb at ffffffffc087e4f5 [ice]
21 [ffffbd13003d3c90] ice_clean_rx_irq at ffffffffc0881b80 [ice]
22 [ffffbd13003d3d20] ice_napi_poll at ffffffffc088232f [ice]
23 [ffffbd13003d3d80] __napi_poll at ffffffff8dc18000
24 [ffffbd13003d3db8] net_rx_action at ffffffff8dc18581
25 [ffffbd13003d3e40] __do_softirq at ffffffff8df352e9
26 [ffffbd13003d3eb0] run_ksoftirqd at ffffffff8ceffe47
27 [ffffbd13003d3ec0] smpboot_thread_fn at ffffffff8cf36a30
28 [ffffbd13003d3ee8] kthread at ffffffff8cf2b39f
29 [ffffbd13003d3f28] ret_from_fork at ffffffff8ce5fa64
30 [ffffbd13003d3f50] ret_from_fork_asm at ffffffff8ce03cbb

Fixes: 66f5d6ce53e6 ("ipv6: replace rwlock with rcu and spinlock in fib6_table")
Reported-by: Adrian Oliver <[email protected]>
Signed-off-by: Omid Ehtemam-Haghighi <[email protected]>
Cc: Shuah Khan <[email protected]>
Cc: Ido Schimmel <[email protected]>
Cc: Kuniyuki Iwashima <[email protected]>
Cc: Simon Horman <[email protected]>
Reviewed-by: David Ahern <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

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selftests: net: add a test for closing a netlink socket ith dump in progress

Close a socket with dump in progress. We need a dump which generates
enough info not to fit into a single skb. Policy dum

selftests: net: add a test for closing a netlink socket ith dump in progress

Close a socket with dump in progress. We need a dump which generates
enough info not to fit into a single skb. Policy dump fits the bill.

Use the trick discovered by syzbot for keeping a ref on the socket
longer than just close, with mqueue.

TAP version 13
1..3
# Starting 3 tests from 1 test cases.
# RUN global.test_sanity ...
# OK global.test_sanity
ok 1 global.test_sanity
# RUN global.close_in_progress ...
# OK global.close_in_progress
ok 2 global.close_in_progress
# RUN global.close_with_ref ...
# OK global.close_with_ref
ok 3 global.close_with_ref
# PASSED: 3 / 3 tests passed.
# Totals: pass:3 fail:0 xfail:0 xpass:0 skip:0 error:0

Note that this test is not expected to fail but rather crash
the kernel if we get the cleanup wrong.

Reviewed-by: Kuniyuki Iwashima <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

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selftests: net: move EXTRA_CLEAN of libynl.a into ynl.mk

Commit 1fd9e4f25782 ("selftests: make kselftest-clean remove libynl outputs")
added EXTRA_CLEAN of YNL generated files to ynl.mk. We already

selftests: net: move EXTRA_CLEAN of libynl.a into ynl.mk

Commit 1fd9e4f25782 ("selftests: make kselftest-clean remove libynl outputs")
added EXTRA_CLEAN of YNL generated files to ynl.mk. We already had
a EXTRA_CLEAN in the file including the snippet. Consolidate them.

Acked-by: Stanislav Fomichev <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

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selftests: net: add new ioam tests

This patch re-adds the (updated) ioam selftests with support for the
tunsrc feature.

Signed-off-by: Justin Iurman <[email protected]>
Link: https://patch.ms

selftests: net: add new ioam tests

This patch re-adds the (updated) ioam selftests with support for the
tunsrc feature.

Signed-off-by: Justin Iurman <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

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selftests: net: remove ioam tests

This patch entirely removes the ioam selftests to prepare for the next
patch in this series, which re-adds the new ioam selftests for better
readability.

Signed-of

selftests: net: remove ioam tests

This patch entirely removes the ioam selftests to prepare for the next
patch in this series, which re-adds the new ioam selftests for better
readability.

Signed-off-by: Justin Iurman <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

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selftests: add ncdevmem, netcat for devmem TCP

ncdevmem is a devmem TCP netcat. It works similarly to netcat, but it
sends and receives data using the devmem TCP APIs. It uses udmabuf as
the dmabuf

selftests: add ncdevmem, netcat for devmem TCP

ncdevmem is a devmem TCP netcat. It works similarly to netcat, but it
sends and receives data using the devmem TCP APIs. It uses udmabuf as
the dmabuf provider. It is compatible with a regular netcat running on
a peer, or a ncdevmem running on a peer.

In addition to normal netcat support, ncdevmem has a validation mode,
where it sends a specific pattern and validates this pattern on the
receiver side to ensure data integrity.

Suggested-by: Stanislav Fomichev <[email protected]>
Signed-off-by: Mina Almasry <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

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selftests: net: enable bind tests

bind_wildcard is compiled but not run, bind_timewait is not compiled.

These two tests complete in a very short time, use the test harness
properly, and seem reason

selftests: net: enable bind tests

bind_wildcard is compiled but not run, bind_timewait is not compiled.

These two tests complete in a very short time, use the test harness
properly, and seem reasonable to enable.

The author of the tests confirmed via email that these were
intended to be run.

Enable these two tests.

Fixes: 13715acf8ab5 ("selftest: Add test for bind() conflicts.")
Fixes: 2c042e8e54ef ("tcp: Add selftest for bind() and TIME_WAIT.")
Signed-off-by: Jamie Bainbridge <[email protected]>
Reviewed-by: Eric Dumazet <[email protected]>
Reviewed-by: Kuniyuki Iwashima <[email protected]>
Link: https://patch.msgid.link/5a009b26cf5fb1ad1512d89c61b37e2fac702323.1725430322.git.jamie.bainbridge@gmail.com
Signed-off-by: Jakub Kicinski <[email protected]>

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