zephyr/modzephyr: Add shell_net_iface() function.

Calls out to Zephyr's shell, submodule "net", command "iface", and shows
network interface information (if CONFIG_NET_SHELL is enabled).

zephyr/modzephyr.c

@@ -48,11 +48,27 @@ STATIC mp_obj_t mod_stacks_analyze(void) {
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_0(mod_stacks_analyze_obj, mod_stacks_analyze);
 
+#ifdef CONFIG_NET_SHELL
+
+//int net_shell_cmd_iface(int argc, char *argv[]);
+
+STATIC mp_obj_t mod_shell_net_iface(void) {
+    net_shell_cmd_iface(0, NULL);
+    return mp_const_none;
+}
+STATIC MP_DEFINE_CONST_FUN_OBJ_0(mod_shell_net_iface_obj, mod_shell_net_iface);
+
+#endif // CONFIG_NET_SHELL
+
 STATIC const mp_rom_map_elem_t mp_module_time_globals_table[] = {
     { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_zephyr) },
     { MP_ROM_QSTR(MP_QSTR_is_preempt_thread), MP_ROM_PTR(&mod_is_preempt_thread_obj) },
     { MP_ROM_QSTR(MP_QSTR_current_tid), MP_ROM_PTR(&mod_current_tid_obj) },
     { MP_ROM_QSTR(MP_QSTR_stacks_analyze), MP_ROM_PTR(&mod_stacks_analyze_obj) },
+
+    #ifdef CONFIG_NET_SHELL
+    { MP_ROM_QSTR(MP_QSTR_shell_net_iface), MP_ROM_PTR(&mod_shell_net_iface_obj) },
+    #endif
 };
 
 STATIC MP_DEFINE_CONST_DICT(mp_module_time_globals, mp_module_time_globals_table);

zephyr/prj_base.conf

@@ -32,6 +32,9 @@ CONFIG_INIT_STACKS=y
 # Required for usocket.pkt_get_info()
 CONFIG_NET_BUF_POOL_USAGE=y
 
+# Required for usocket.shell_*()
+#CONFIG_NET_SHELL=y
+
 # Uncomment to enable "INFO" level net_buf logging
 #CONFIG_NET_LOG=y
 #CONFIG_NET_DEBUG_NET_BUF=y