add can/lin controller status

Signed-off-by: wangxiaoxin <wangxiaoxin@xiaomi.com>

include/net/if.h

@@ -198,6 +198,16 @@ struct can_ioctl_filter_s
   uint8_t  fprio; /* See CAN_MSGPRIO_* definitions */
 };
 
+/* Define an enumeration type that describes the CAN/LIN state */
+
+enum can_ioctl_state_e
+{
+  CAN_STATE_OPERATIONAL = 1, /* The can/lin controller is in the awake state */
+  CAN_STATE_SLEEP,           /* The can/lin controller is in the sleep state */
+  CAN_STATE_SPENDING,        /* The can/lin controller is preparing to enter sleep state */
+  CAN_STATE_BUSY             /* The can/lin bus is busy */
+};
+
 /* There are two forms of the I/F request structure.
  * One for IPv6 and one for IPv4.
  * Notice that they are (and must be) cast compatible and really different
@@ -224,6 +234,7 @@ struct lifreq
     struct mii_ioctl_data_s    lifru_mii_data;       /* MII request data */
     struct can_ioctl_data_s    lifru_can_data;       /* CAN bitrate request data */
     struct can_ioctl_filter_s  lifru_can_filter;     /* CAN filter request data */
+    enum   can_ioctl_state_e   lifru_can_state;      /* CAN/LIN controller state */
   } lifr_ifru;
 };
 
@@ -277,6 +288,7 @@ struct ifreq
     struct mii_ioctl_data_s    ifru_mii_data;       /* MII request data */
     struct can_ioctl_data_s    ifru_can_data;       /* CAN bitrate request data */
     struct can_ioctl_filter_s  ifru_can_filter;     /* CAN filter request data */
+    enum   can_ioctl_state_e   ifru_can_state;      /* CAN/LIN controller state */
     FAR void                  *ifru_data;           /* For use by interface */
   } ifr_ifru;
 };

include/nuttx/net/ioctl.h

@@ -125,6 +125,8 @@
 #define SIOCACANSTDFILTER  _SIOC(0x0030)  /* Add hardware-level standard ID filter */
 #define SIOCDCANSTDFILTER  _SIOC(0x0031)  /* Delete hardware-level standard ID filter */
 #define SIOCCANRECOVERY    _SIOC(0x0032)  /* Recovery can, work only when bus-off state */
+#define SIOCGCANSTATE      _SIOC(0x003E)  /* Get state from a CAN/LIN controller */
+#define SIOCSCANSTATE      _SIOC(0x003F)  /* Set the LIN/CAN controller state */
 
 /* Network socket control ***************************************************/
 

net/netdev/Kconfig

@@ -33,6 +33,15 @@ config NETDEV_CAN_FILTER_IOCTL
 		Enable support for ioctl() commands to add/remove CAN hardware-level
 		filters (NOTE: Not supported by all drivers)
 
+config NETDEV_CAN_STATE_IOCTL
+	bool "Enable CAN state ioctl()"
+	default n
+	select NETDEV_IOCTL
+	depends on NET_CAN
+	---help---
+		Enable support for ioctl() commands to set/see CAN or LIN controller-state
+		(NOTE: Not supported by all drivers)
+
 config NETDEV_WIRELESS_IOCTL
 	bool "Enable Wireless ioctl()"
 	default n

net/netdev/netdev_ioctl.c

@@ -726,6 +726,8 @@ static ssize_t net_ioctl_ifreq_arglen(uint8_t domain, int cmd)
       case SIOCACANSTDFILTER:
       case SIOCDCANSTDFILTER:
       case SIOCCANRECOVERY:
+      case SIOCGCANSTATE:
+      case SIOCSCANSTATE:
       case SIOCSIFNAME:
       case SIOCGIFNAME:
       case SIOCGIFINDEX:
@@ -1210,6 +1212,23 @@ static int netdev_ifr_ioctl(FAR struct socket *psock, int cmd,
         break;
 #endif
 
+#if defined(CONFIG_NETDEV_IOCTL) && defined(CONFIG_NETDEV_CAN_STATE_IOCTL)
+      case SIOCGCANSTATE:  /* Get state from a CAN/LIN controller */
+      case SIOCSCANSTATE:  /* Set the LIN/CAN controller state */
+        if (dev->d_ioctl)
+          {
+            FAR enum can_ioctl_state_e *can_state =
+              &req->ifr_ifru.ifru_can_state;
+            ret = dev->d_ioctl(dev, cmd,
+                          (unsigned long)(uintptr_t)can_state);
+          }
+        else
+          {
+            ret = -ENOSYS;
+          }
+        break;
+#endif
+
 #ifdef CONFIG_NETDEV_IFINDEX
       case SIOCGIFINDEX:  /* Index to name mapping */
         req->ifr_ifindex = dev->d_ifindex;