linux-stable.git/tools/testing/selftests/drivers/net/netdevsim, branch v6.2

selftests: devlink: add a warning for interfaces coming up

2022-12-16T10:21:37+00:00

NetworkManager (and other daemons) may bring the interface up
and cause failures in quiescence checks. Print a helpful warning,
and take the interface down again.

I seem to forget about this every time I run these tests on a new VM.

Signed-off-by: Jakub Kicinski 
Signed-off-by: David S. Miller

selftests: devlink: fix the fd redirect in dummy_reporter_test

2022-12-16T10:21:36+00:00

$number + > bash means redirect FD $number, e.g. commonly
used 2> redirects stderr (fd 2). The test uses 8192> to
write the number 8192 to a file, this results in:

  ./devlink.sh: line 499: 8192: Bad file descriptor

Oddly the test also papers over this issue by checking
for failure (expecting an error rather than success)
so it passes, anyway.

Fixes: ff18176ad806 ("selftests: Add a test of large binary to devlink health test")
Signed-off-by: Jakub Kicinski 
Signed-off-by: David S. Miller

selftests: netdevsim: Add test cases for route deletion failure

2022-07-29T11:21:02+00:00

Add IPv4 and IPv6 test cases that ensure that we are not leaking a
reference on the nexthop device when we are unable to delete its
associated route.

Without the fix in a previous patch ("netdevsim: fib: Fix reference
count leak on route deletion failure") both test cases get stuck,
waiting for the reference to be released from the dummy device [1][2].

[1]
unregister_netdevice: waiting for dummy1 to become free. Usage count = 5
leaked reference.
 fib_check_nh+0x275/0x620
 fib_create_info+0x237c/0x4d30
 fib_table_insert+0x1dd/0x1d20
 inet_rtm_newroute+0x11b/0x200
 rtnetlink_rcv_msg+0x43b/0xd20
 netlink_rcv_skb+0x15e/0x430
 netlink_unicast+0x53b/0x800
 netlink_sendmsg+0x945/0xe40
 ____sys_sendmsg+0x747/0x960
 ___sys_sendmsg+0x11d/0x190
 __sys_sendmsg+0x118/0x1e0
 do_syscall_64+0x34/0x80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

[2]
unregister_netdevice: waiting for dummy1 to become free. Usage count = 5
leaked reference.
 fib6_nh_init+0xc46/0x1ca0
 ip6_route_info_create+0x1167/0x19a0
 ip6_route_add+0x27/0x150
 inet6_rtm_newroute+0x161/0x170
 rtnetlink_rcv_msg+0x43b/0xd20
 netlink_rcv_skb+0x15e/0x430
 netlink_unicast+0x53b/0x800
 netlink_sendmsg+0x945/0xe40
 ____sys_sendmsg+0x747/0x960
 ___sys_sendmsg+0x11d/0x190
 __sys_sendmsg+0x118/0x1e0
 do_syscall_64+0x34/0x80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Signed-off-by: Ido Schimmel 
Reviewed-by: Amit Cohen 
Reviewed-by: David Ahern 
Signed-off-by: David S. Miller

selftests: netdevsim: Increase sleep time in hw_stats_l3.sh test

2022-05-18T13:06:50+00:00

hw_stats_l3.sh test is failing often for l3 stats shows less than 20
packets after 2 seconds sleep.

This is happening since there is a race between the 2 seconds sleep and
the netdevsim actually delivering the packets.

Increase the sleep time so the packets will be delivered successfully on
time.

Signed-off-by: Danielle Ratson 
Reviewed-by: Petr Machata 
Signed-off-by: David S. Miller

selftests: netdevsim: hw_stats_l3: Add a new test

2022-03-15T13:00:51+00:00

Add a test that verifies basic UAPI contracts, netdevsim operation,
rollbacks after partial enablement in core, and UAPI notifications.

Signed-off-by: Petr Machata 
Signed-off-by: Paolo Abeni

selftests: net: test ethtool -L vs mq

2021-09-15T14:46:02+00:00

Add a selftest for checking mq children are visible after ethtool -L.

Signed-off-by: Jakub Kicinski 
Signed-off-by: David S. Miller

testing: selftests: drivers: net: netdevsim: devlink: add test case for hard drop statistics

2021-06-14T20:04:25+00:00

Add hard drop counter check testcase, to make sure netdevsim driver
properly handles the devlink hard drop counters get/set callbacks.

Signed-off-by: Oleksandr Mazur 
Signed-off-by: David S. Miller

selftests: devlink_lib: Fix bouncing of netdevsim DEVLINK_DEV

2021-06-08T21:39:07+00:00

In the commit referenced below, a check was added to devlink_lib that
asserts the existence of a devlink device referenced by $DEVLINK_DEV.
Unfortunately, several netdevsim tests point DEVLINK_DEV at a device that
does not exist at the time that devlink_lib is sourced. Thus these tests
spuriously fail.

Fix this by introducing an override. By setting DEVLINK_DEV to an empty
string, the user declares their intention to handle DEVLINK_DEV management
on their own.

In all netdevsim tests that use devlink_lib and set DEVLINK_DEV, set
instead an empty DEVLINK_DEV just before sourcing devlink_lib, and set it
to the correct value right afterwards.

Fixes: 557c4d2f780c ("selftests: devlink_lib: add check for devlink device existence")
Signed-off-by: Petr Machata 
Signed-off-by: Ido Schimmel 
Signed-off-by: David S. Miller

selftest: netdevsim: Add devlink rate grouping test

2021-06-02T21:08:37+00:00

Test verifies that netdevsim correctly implements devlink ops callbacks
that set node as a parent of devlink leaf or node rate object.

Co-developed-by: Vlad Buslov 
Signed-off-by: Vlad Buslov 
Signed-off-by: Dmytro Linkin 
Reviewed-by: Jiri Pirko 
Signed-off-by: David S. Miller

selftest: netdevsim: Add devlink rate nodes test

2021-06-02T21:08:37+00:00

Test verifies that it is possible to create, delete and set min/max tx
rate of devlink rate node on netdevsim VF.

Co-developed-by: Vlad Buslov 
Signed-off-by: Vlad Buslov 
Signed-off-by: Dmytro Linkin 
Reviewed-by: Jiri Pirko 
Signed-off-by: David S. Miller