Retrieve net_stats for ethernet vlan cause assert trap in Arm target

[linuxemb]

Describe the bug

Logs and console output
<ASSERTION FAIL [iface] @ WEST_TOPDIR/zephyr/subsys/net/ip/net_stats.h:38
Environment (please complete the following information):

• OS: (e.g. Linux, MacOS, Windows)
• Toolchain (Zephyr 3.7
• Commit SHA or Version used

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[jukkar]

Could you provide instructions how to replicate the issue?

[linuxemb]

Repro steps:
1 Enable config in prj file

#define CONFIG_NET_STATISTICS
#define CONFIG_NET_STATISTICS_ETHERNET
#define CONFIG_NET_MGMT
#define CONFIG_NET_MGMT_EVENT
2 call this in c file

if(net_if_l2(iface) == &NET_L2_GET_NAME(ETHERNET)) {
	net_mgmt(NET_REQUEST_STATS_GET_ETHERNET, iface, &stats, sizeof(stats));
}

3 --tested on my Fpga board running on A55

[linuxemb]

step 4 -- call network config and bring vlan up api in mon shell

crash happed

[jukkar]

I have not been able to reproduce this. I tried with two qemu ARM boards in latest main (4.1.99+ commit 0b2d455) and also in latest v3.7 like this

west build -p -b qemu_cortex_a53/qemu_cortex_a53 -t run samples/net/sockets/echo_server/ \
           -d ../build/echo-server-qemu/ -- \
-DEXTRA_CONF_FILE=overlay-vlan.conf -DCONFIG_NET_STATISTICS=y -DCONFIG_NET_STATISTICS_ETHERNET=y \
-DCONFIG_NET_MGMT=y -DCONFIG_NET_MGMT_EVENT=y -DCONFIG_NET_STATISTICS_USER_API=y

and

west build -p -b qemu_cortex_m3 -t run samples/net/vlan/ -d ../build/echo-server-qemu/ -- \
-DCONFIG_NET_STATISTICS=y -DCONFIG_NET_STATISTICS_ETHERNET=y -DCONFIG_NET_MGMT=y \
-DCONFIG_NET_MGMT_EVENT=y -DCONFIG_NET_STATISTICS_USER_API=y -DCONFIG_NET_QEMU_SLIP=n \
-DCONFIG_NET_QEMU_ETHERNET=y

Both worked fine when trying to see Ethernet statistics from net-shell. Needed to enable e1000 Ethernet driver statistics to see statistics with qemu_cortex_a53 board, the PR is here #88909