netdevsim: fix rtnetlink.sh selftest

I cleared IFF_NOARP flag from netdevsim dev->flags in order to support
skb forwarding. This breaks the rtnetlink.sh selftest
kci_test_ipsec_offload() test because ipsec does not connect to peers it
cannot transmit to.

Fix the issue by adding a neigh entry manually. ipsec_offload test now
successfully pass.

Signed-off-by: David Wei <dw@davidwei.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

selftests: net: fix setup_ns usage in rtnetlink.sh

The setup_ns helper marks the testns global variable as
readonly. Later attempts to set such variable are unsuccessful,
causing a couple test failures.

Avoid completely the variable re-initialization and let the
function access the global value.

Fixes: e9ce7ededf14 ("selftests: rtnetlink: use setup_ns in bonding test")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/r/6e7c937c8ff73ca52a21a4a536a13a76ec0173a8.1706812005.git.pabeni@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

selftests: rtnetlink: use setup_ns in bonding test

This is a follow-up of commit a159cbe81d3b ("selftests: rtnetlink: check
enslaving iface in a bond") after the merge of net-next into net.

The goal is to follow the new convention,
see commit d3b6b1116127 ("selftests/net: convert rtnetlink.sh to run it in
unique namespace") for more details.

Let's use also the generic dummy name instead of defining a new one.

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Reviewed-by: Hangbin Liu <liuhangbin@gmail.com>
Link: https://lore.kernel.org/r/20240115135922.3662648-1-nicolas.dichtel@6wind.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

selftests: rtnetlink: check enslaving iface in a bond

The goal is to check the following two sequences:
> ip link set dummy0 up
> ip link set dummy0 master bond0 down

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Link: https://lore.kernel.org/r/20240108094103.2001224-3-nicolas.dichtel@6wind.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

selftests/net: convert rtnetlink.sh to run it in unique namespace

When running the test in namespace, the debugfs may not load automatically.
So add a checking to make sure debugfs loaded. Here is the test result
after conversion.

# ./rtnetlink.sh
PASS: policy routing
PASS: route get
...
PASS: address proto IPv4
PASS: address proto IPv6

Acked-by: David Ahern <dsahern@kernel.org>
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

kselftest: rtnetlink.sh: use grep_fail when expecting the cmd fail

run_cmd_grep_fail should be used when expecting the cmd fail, or the ret
will be set to 1, and the total test return 1 when exiting. This would cause
the result report to fail if run via run_kselftest.sh.

Before fix:
# ./rtnetlink.sh -t kci_test_addrlft
PASS: preferred_lft addresses have expired
# echo $?
1

After fix:
# ./rtnetlink.sh -t kci_test_addrlft
PASS: preferred_lft addresses have expired
# echo $?
0

Fixes: 9c2a19f71515 ("kselftest: rtnetlink.sh: add verbose flag")
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/20231219065737.1725120-1-liuhangbin@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

kselftest: rtnetlink: fix ip route command typo

The blamed commit below introduced a typo causing 'gretap' test-case
failures:

./rtnetlink.sh -t kci_test_gretap -v
COMMAND: ip link add name test-dummy0 type dummy
COMMAND: ip link set test-dummy0 up
COMMAND: ip netns add testns
COMMAND: ip link help gretap 2>&1 | grep -q '^Usage:'
COMMAND: ip -netns testns link add dev gretap00 type gretap seq key 102 local 172.16.1.100 remote 172.16.1.200
COMMAND: ip -netns testns addr add dev gretap00 10.1.1.100/24
COMMAND: ip -netns testns link set dev gretap00 ups
Error: either "dev" is duplicate, or "ups" is a garbage.
COMMAND: ip -netns testns link del gretap00
COMMAND: ip -netns testns link add dev gretap00 type gretap external
COMMAND: ip -netns testns link del gretap00
FAIL: gretap

Fix it by using the correct keyword.

Fixes: 9c2a19f71515 ("kselftest: rtnetlink.sh: add verbose flag")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Hangbin Liu <liuhangbin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

kselftest: rtnetlink: add pause and pause on fail flag

'Pause' prompts the user to press Enter to continue running tests
once one test has finished. Pause on fail on prompts the user to press
enter only when a test fails.

Modifications to kci_test_addrlft() and kci_test_ipsec_offload()
ensure that whenever end_test is called, [$ret -ne 0] indicates
failure. This allows end_test to really easily implement pause on fail
functionality.

Signed-off-by: Daniel Mendes <dmendes@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

kselftest: rtnetlink.sh: add verbose flag

Uses a run_cmd helper function similar to other selftests to add
verbose functionality i.e. print executed commands and their outputs

Many commands silence or redirect output. This can be removed since
the verbose helper function captures output anyway and only outputs it
if VERBOSE is true. Similarly, the helper command for pipes to grep
searches stderr and stdout. This makes output redirection unnecessary
in those cases.

Signed-off-by: Daniel Mendes <dmendes@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

selftests: rtnetlink: add MACsec offload tests

Like the IPsec offload test, this requires netdevsim.

Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

selftests: rtnetlink: remove netdevsim device after ipsec offload test

On systems where netdevsim is built-in or loaded before the test
starts, kci_test_ipsec_offload doesn't remove the netdevsim device it
created during the test.

Fixes: e05b2d141fef ("netdevsim: move netdev creation/destruction to dev probe")
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Link: https://lore.kernel.org/r/e1cb94f4f82f4eca4a444feec4488a1323396357.1687466906.git.sd@queasysnail.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

selftests: rtnetlink: Fix do_test_address_proto()

This selftest was introduced recently in the commit cited below. It misses
several check_err() invocations to actually verify that the previous
command succeeded. When these are added, the first one fails, because
besides the addresses added by hand, there can be a link-local address
added by the kernel. Adjust the check to expect at least three addresses
instead of exactly three, and add the missing check_err's.

Furthermore, the explanatory comments assume that the address with no
protocol is $addr2, when in fact it is $addr3. Update the comments.

Fixes: 6a414fd77f61 ("selftests: rtnetlink: Add an address proto test")
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://lore.kernel.org/r/53a579bc883e1bf2fe490d58427cf22c2d1aa21f.1680102695.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

selftests: rtnetlink: Add an address proto test

Add coverage of "ip address {add,replace} ... proto" support.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

selftests: rtnetlink: Make the set of tests to run configurable

Extract the list of all tests into a variable, ALL_TESTS. Then assume the
environment variable TESTS holds the list of tests to actually run, falling
back to ALL_TESTS if TESTS is empty. This is the same interface that
forwarding selftests use to make the set of tests to run configurable.
In addition to this, allow setting the value explicitly through a command
line option "-t" along the lines of what fib_nexthops.sh does.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

selftests: rtnetlink: correct xfrm policy rule in kci_test_ipsec_offload

When testing in kci_test_ipsec_offload, srcip is configured as $dstip,
it should add xfrm policy rule in instead of out.
The test result of this patch is as follows:
PASS: ipsec_offload

Fixes: 2766a11161cc ("selftests: rtnetlink: add ipsec offload API test")
Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com>
Acked-by: Hangbin Liu <liuhangbin@gmail.com>
Link: https://lore.kernel.org/r/20221201082246.14131-1-shaozhengchao@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

selftests: rtnetlink: Use more sensible tos values

Using tos 0x1 with 'ip route get <IPv4 address> ...' doesn't test much
of the tos option handling: 0x1 just sets an ECN bit, which is cleared
by inet_rtm_getroute() before doing the fib lookup. Let's use 0x10
instead, which is actually taken into account in the route lookup (and
is less surprising for the reader).

For consistency, use 0x10 for the IPv6 route lookup too (IPv6 currently
doesn't clear ECN bits, but might do so in the future).

Signed-off-by: Guillaume Nault <gnault@redhat.com>
Link: https://lore.kernel.org/r/d61119e68d01ba7ef3ba50c1345a5123a11de123.1643815297.git.gnault@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

selftests: rtnetlink: load fou module for kci_test_encap_fou() test

The kci_test_encap_fou() test from kci_test_encap() in rtnetlink.sh
needs the fou module to work. Otherwise it will fail with:

$ ip netns exec "$testns" ip fou add port 7777 ipproto 47
RTNETLINK answers: No such file or directory
Error talking to the kernel

Add the CONFIG_NET_FOU into the config file as well. Which needs at
least to be set as a loadable module.

Fixes: 6227efc1a20b ("selftests: rtnetlink.sh: add vxlan and fou test cases")
Signed-off-by: Po-Hsu Lin <po-hsu.lin@canonical.com>
Link: https://lore.kernel.org/r/20201019030928.9859-1-po-hsu.lin@canonical.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

selftests: rtnetlink: Test bridge enslavement with different parent IDs

Test that an upper device of netdevs with different parent IDs can be
enslaved to a bridge.

The test fails without previous commit.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Reviewed-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

selftests: rtnetlink: make kci_test_encap() return sub-test result

kci_test_encap() is actually composed by two different sub-tests,
kci_test_encap_vxlan() and kci_test_encap_fou()

Therefore we should check the test result of these two in
kci_test_encap() to let the script be aware of the pass / fail status.
Otherwise it will generate false-negative result like below:
$ sudo ./test.sh
PASS: policy routing
PASS: route get
PASS: preferred_lft addresses have expired
PASS: promote_secondaries complete
PASS: tc htb hierarchy
PASS: gre tunnel endpoint
PASS: gretap
PASS: ip6gretap
PASS: erspan
PASS: ip6erspan
PASS: bridge setup
PASS: ipv6 addrlabel
PASS: set ifalias 5b193daf-0a08-46d7-af2c-e7aadd422ded for test-dummy0
PASS: vrf
PASS: vxlan
FAIL: can't add fou port 7777, skipping test
PASS: macsec
PASS: bridge fdb get
PASS: neigh get
$ echo $?
0

Signed-off-by: Po-Hsu Lin <po-hsu.lin@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

selftests: rtnetlink: correct the final return value for the test

The return value "ret" will be reset to 0 from the beginning of each
sub-test in rtnetlink.sh, therefore this test will always pass if the
last sub-test has passed:
$ sudo ./rtnetlink.sh
PASS: policy routing
PASS: route get
PASS: preferred_lft addresses have expired
PASS: promote_secondaries complete
PASS: tc htb hierarchy
PASS: gre tunnel endpoint
PASS: gretap
PASS: ip6gretap
PASS: erspan
PASS: ip6erspan
PASS: bridge setup
PASS: ipv6 addrlabel
PASS: set ifalias a39ee707-e36b-41d3-802f-63179ed4d580 for test-dummy0
PASS: vrf
PASS: vxlan
FAIL: can't add fou port 7777, skipping test
PASS: macsec
PASS: ipsec
3,7c3,7
< sa[0] spi=0x00000009 proto=0x32 salt=0x64636261 crypt=1
< sa[0] key=0x31323334 35363738 39303132 33343536
< sa[1] rx ipaddr=0x00000000 00000000 00000000 c0a87b03
< sa[1] spi=0x00000009 proto=0x32 salt=0x64636261 crypt=1
< sa[1] key=0x31323334 35363738 39303132 33343536
---
> sa[0] spi=0x00000009 proto=0x32 salt=0x61626364 crypt=1
> sa[0] key=0x34333231 38373635 32313039 36353433
> sa[1] rx ipaddr=0x00000000 00000000 00000000 037ba8c0
> sa[1] spi=0x00000009 proto=0x32 salt=0x61626364 crypt=1
> sa[1] key=0x34333231 38373635 32313039 36353433
FAIL: ipsec_offload incorrect driver data
FAIL: ipsec_offload
PASS: bridge fdb get
PASS: neigh get
$ echo $?
0

Make "ret" become a local variable for all sub-tests.
Also, check the sub-test results in kci_test_rtnl() and return the
final result for this test.

Signed-off-by: Po-Hsu Lin <po-hsu.lin@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

selftests: rtnetlink: skip ipsec offload tests if netdevsim isn't present

running the script on systems without netdevsim now prints:

SKIP: ipsec_offload can't load netdevsim

instead of error message & failed status.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

selftests: rtnetlink: add small test case with 'promote_secondaries' enabled

This exercises the 'promote_secondaries' code path.

Without previous fix, this triggers infinite loop/soft lockup:
ifconfig process spinning at 100%, never to return.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

selftests: rtnetlink: add addresses with fixed life time

This exercises kernel code path that deal with addresses that have
a limited lifetime.

Without previous fix, this triggers following crash on net-next:
BUG: KASAN: null-ptr-deref in check_lifetime+0x403/0x670
Read of size 8 at addr 0000000000000010 by task kworker [..]

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

netdevsim: move netdev creation/destruction to dev probe

Remove the existing way to create netdevsim over rtnetlink and move the
netdev creation/destruction to dev probe, so for every probed port,
a netdevsim-netdev instance is created.

Adjust selftests to work with new interface.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

netdevsim: change debugfs tree topology

With the model where dev is represented by devlink and ports are
represented by devlink ports, make debugfs file names independent
on netdev names. Change the topology to the one illustrated
by the following example:

$ ls /sys/kernel/debug/netdevsim/
netdevsim1
$ ls /sys/kernel/debug/netdevsim/netdevsim1/
bpf_bind_accept bpf_bind_verifier_delay bpf_bound_progs ports
$ ls /sys/kernel/debug/netdevsim/netdevsim1/ports/
0 1
$ ls /sys/kernel/debug/netdevsim/netdevsim1/ports/0/
bpf_map_accept bpf_offloaded_id bpf_tc_accept bpf_tc_non_bound_accept bpf_xdpdrv_accept bpf_xdpoffload_accept dev ipsec
$ ls /sys/kernel/debug/netdevsim/netdevsim1/ports/0/dev -l
lrwxrwxrwx 1 root root 0 Apr 13 15:58 /sys/kernel/debug/netdevsim/netdevsim1/ports/0/dev -> ../../../netdevsim1

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

selftests: rtnetlink: use internal netns switch for ip commands

'ip' can switch network namespaces internally and then run a given
command relative to that namespace without the need to fork and exec
another ip instance. Update all references of the form:
ip netns exec "$testns" ip ...
to
ip -netns "$testns" ...

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

tools: selftests: rtnetlink: add testcases for vxlan flag sets

This patch extends rtnetlink.sh to cover some vxlan flag
netlink attribute sets.

Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

selftests: rtnetlink: Add a test case for multipath route get

Without previous patch a warning would be generated upon multipath route
get when FIB multipath hash policy is to use a 5-tuple for multipath
hash calculation.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

selftests: rtnetlink.sh: add testcase for neigh get

Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Reviewed-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

selftests: net: rtnetlink.sh: add fdb get test

tests the below three cases of bridge fdb get:
[bridge, mac, vlan]
[bridge_port, mac, vlan, flags=[NTF_MASTER]]
[vxlandev, mac, flags=NTF_SELF]

depends on iproute2 support for bridge fdb get.

Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

selftests: rtnetlink.sh explicitly requires bash.

the script rtnetlink.sh requires a bash-only features (sleep with sub-second
precision). This may cause random test failure if the default shell is not
bash.
Address the above explicitly requiring bash as the script interpreter.

Fixes: 33b01b7b4f19 ("selftests: add rtnetlink test script")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

selftests: rtnetlink: add ipsec offload API test

Using the netdevsim as a device for testing, try out the XFRM commands
for setting up IPsec hardware offloads.

Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

selftests: rtnetlink: use dummydev as a test device

We really shouldn't mess with local system settings, so let's
use the already created dummy device instead for ipsec testing.
Oh, and let's put the temp file into a proper directory.

Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

selftests: rtnetlink: clear the return code at start of ipsec test

Following the custom from the other functions, clear the global
ret code before starting the test so as to not have previously
failed tests cause us to thing this test has failed.

Reported-by: Anders Roxell <anders.roxell@linaro.org>
Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

selftests: rtnetlink: use a local IP address for IPsec tests

Find an IP address on this machine to use as a source IP, and
make up a destination IP address based on the source IP. No
actual messages will be sent, just a couple of IPsec rules are
created and deleted.

Fixes: 5e596ee171ba ("selftests: add xfrm state-policy-monitor to rtnetlink.sh")
Reported-by: Anders Roxell <anders.roxell@linaro.org>
Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

selftests: rtnetlink: hide complaint from terminated monitor

Set up the "ip xfrm monitor" subprogram so as to not see
a "Terminated" message when the subprogram is killed.

Fixes: 5e596ee171ba ("selftests: add xfrm state-policy-monitor to rtnetlink.sh")
Reported-by: Anders Roxell <anders.roxell@linaro.org>
Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

selftests: net: return Kselftest Skip code for skipped tests

When net test is skipped because of unmet dependencies and/or unsupported
configuration, it returns 0 which is treated as a pass by the Kselftest
framework. This leads to false positive result even when the test could
not be run.

Change it to return kselftest skip code when a test gets skipped to
clearly report that the test could not be run.

Kselftest framework SKIP code is 4 and the framework prints appropriate
messages to indicate that the test is skipped.

Change psock_tpacket to use ksft_exit_skip() when a non-root user runs
the test and add an explicit check for root and a clear message, instead
of failing the test when /sys/power/state file open fails.

Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>

selftests: add xfrm state-policy-monitor to rtnetlink.sh

Add a simple set of tests for the IPsec xfrm commands.

Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>

selftests: rtnetlink: remove testns on test fail

This patch removes testns after test failure so that next test can
continue with clean ns

Signed-off-by: Prashant Bhole <bhole_prashant_q7@lab.ntt.co.jp>
Acked-by: William Tu <u9012063@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

selftests: rtnetlink: add erspan and ip6erspan

Add test cases for ipv4, ipv6 erspan, v1 and v2 native mode
and external (collect metadata) mode.

Signed-off-by: William Tu <u9012063@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

selftests: rtnetlink: add gretap test cases

Add test cases for gretap and ip6gretap, native mode
and external (collect metadata) mode.

Signed-off-by: William Tu <u9012063@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

selftests: rtnetlink: add a small macsec test case

Signed-off-by: Florian Westphal <fw@strlen.de>
Reviewed-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

selftests: rtnetlink: test RTM_GETNETCONF

exercise RTM_GETNETCONF call path for unspec, inet and inet6
families, they are DOIT_UNLOCKED candidates.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

selftests: rtnetlink: try concurrent change of ifalias

to make sure this is serialized correctly.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

selftests: rtnetlink.sh: add vxlan and fou test cases

fou test lifted from ip-fou man page.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

selftests: rtnetlink.sh: add rudimentary vrf test

Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

selftests: rtnetlink.sh: add test case for device ifalias

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

selftests: add addrlabel add/delete to rtnetlink.sh

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

selftests: add 'ip get' to rtnetlink.sh

exercise ip/ip6 RTM_GETROUTE doit() callpath.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

selftests: add rtnetlink test script

add a simple script to exercise some rtnetlink call paths, so KASAN,
lockdep etc. can yell at developer before patches are sent upstream.

This can be extended to also cover bond, team, vrf and the like.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>