Merge: CNB96: netdevsim: update netdevsim to the v6.12

MR: https://gitlab.com/redhat/centos-stream/src/kernel/centos-stream-9/-/merge_requests/5367

JIRA: https://issues.redhat.com/browse/RHEL-57764  
Tested: Verified using existing and newly introduced self-tests    

Commits:
```
e2ece0b ("tools/net/ynl: Add --output-json arg to ynl cli")
771b701 ("tools/net/ynl: Report netlink errors without stacktrace")
2a0683b ("selftests: Introduce Makefile variable to list shared bash scripts")
39369c9 ("selftests: netdevsim: add a config file")
afbf75e ("selftests: netdevsim: set test timeout to 10 minutes")
b86761f ("selftests: net: add scaffolding for Netlink tests in Python")
796c8c7 ("selftests: nl_netdev: add a trivial Netlink netdev test")
f216306 ("netdevsim: report stats by default, like a real device")
b4db9f8 ("selftests: drivers: add scaffolding for Netlink tests in Python")
f0e6c86 ("testing: net-drv: add a driver test for stats reporting")
6ce2b68 ("selftests: net: reuse common code in bpf_offload")
1580cbc ("net: netdevsim: add some fake page pool use")
72ba6cb ("tools: ynl: don't return None for dumps")
eeb409b ("selftests: net: print report check location in python tests")
99583b9 ("selftests: net: print full exception on failure")
8554d6e ("selftests: net: support use of NetdevSimDev under "with" in python")
05fa5c3 ("selftests: net: exercise page pool reporting via netlink")
94e2a19 ("net: netdevsim: select PAGE_POOL in Kconfig")
655614e ("selftests: net: fix counting totals when some checks fail")
4fa6bd4 ("selftests: net: set the exit code correctly in Python tests")
1a20a9a ("selftests: drv-net: define endpoint structures")
5433892 ("selftests: drv-net: factor out parsing of the env")
1880f27 ("selftests: drv-net: construct environment for running tests which require an endpoint")
a48a87c ("selftests: drv-net: add a trivial ping test")
01b4316 ("selftests: net: support matching cases by name prefix")
31611ce ("selftests: drv-net: add a TCP ping test case (and useful helpers)")
f1e68a1 ("selftests: drv-net: add require_XYZ() helpers for validating env")
e1bb5e6 ("selftests: net: py: check process exit code in bkg() and background cmd()")
3762ec0 ("netdevsim: add NAPI support")
1cf2704 ("net: selftest: add test for netdev netlink queue-get API")
a61a459 ("testing: net-drv: use stats64 for testing")
5add2f7 ("netdevsim: fix backwards compatibility in nsim_get_iflink()")
```

Signed-off-by: Ivan Vecera <ivecera@redhat.com>

Approved-by: Herton R. Krzesinski <herton@redhat.com>
Approved-by: Petr Oros <poros@redhat.com>
Approved-by: Hangbin Liu <haliu@redhat.com>
Approved-by: CKI KWF Bot <cki-ci-bot+kwf-gitlab-com@redhat.com>

Merged-by: Rado Vrbovsky <rvrbovsk@redhat.com>

Author: emmil

Documentation/dev-tools/kselftest.rst

@@ -239,9 +239,21 @@ Contributing new tests (details)
 
    TEST_PROGS_EXTENDED, TEST_GEN_PROGS_EXTENDED mean it is the
    executable which is not tested by default.
+
    TEST_FILES, TEST_GEN_FILES mean it is the file which is used by
    test.
 
+   TEST_INCLUDES is similar to TEST_FILES, it lists files which should be
+   included when exporting or installing the tests, with the following
+   differences:
+
+    * symlinks to files in other directories are preserved
+    * the part of paths below tools/testing/selftests/ is preserved when
+      copying the files to the output directory
+
+   TEST_INCLUDES is meant to list dependencies located in other directories of
+   the selftests hierarchy.
+
  * First use the headers inside the kernel source and/or git repo, and then the
    system headers.  Headers for the kernel release as opposed to headers
    installed by the distro on the system should be the primary focus to be able

drivers/net/Kconfig

@@ -580,6 +580,7 @@ config NETDEVSIM
 	depends on PSAMPLE || PSAMPLE=n
 	depends on PTP_1588_CLOCK_MOCK || PTP_1588_CLOCK_MOCK=n
 	select NET_DEVLINK
+	select PAGE_POOL
 	help
 	  This driver is a developer testing tool and software model that can
 	  be used to test various control path networking APIs, especially

drivers/net/netdevsim/ethtool.c

@@ -140,6 +140,13 @@ nsim_set_fecparam(struct net_device *dev, struct ethtool_fecparam *fecparam)
 	return 0;
 }
 
+static void
+nsim_get_fec_stats(struct net_device *dev, struct ethtool_fec_stats *fec_stats)
+{
+	fec_stats->corrected_blocks.total = 123;
+	fec_stats->uncorrectable_blocks.total = 4;
+}
+
 static int nsim_get_ts_info(struct net_device *dev,
 			    struct kernel_ethtool_ts_info *info)
 {
@@ -163,6 +170,7 @@ static const struct ethtool_ops nsim_ethtool_ops = {
 	.set_channels			= nsim_set_channels,
 	.get_fecparam			= nsim_get_fecparam,
 	.set_fecparam			= nsim_set_fecparam,
+	.get_fec_stats			= nsim_get_fec_stats,
 	.get_ts_info			= nsim_get_ts_info,
 };
 
@@ -182,6 +190,9 @@ void nsim_ethtool_init(struct netdevsim *ns)
 
 	nsim_ethtool_ring_init(ns);
 
+	ns->ethtool.pauseparam.report_stats_rx = true;
+	ns->ethtool.pauseparam.report_stats_tx = true;
+
 	ns->ethtool.fec.fec = ETHTOOL_FEC_NONE;
 	ns->ethtool.fec.active_fec = ETHTOOL_FEC_NONE;