3 files changed, 107 insertions, 0 deletions

diff --git a/include/linux/can/dev.h b/include/linux/can/dev.h
index 2b2fc345afca..fb0ab651a041 100644
--- a/include/linux/can/dev.h
+++ b/include/linux/can/dev.h
@@ -16,6 +16,7 @@
 #include <linux/can.h>
 #include <linux/can/netlink.h>
 #include <linux/can/error.h>
+#include <linux/can/led.h>
 
 /*
  * CAN mode
@@ -52,6 +53,13 @@ struct can_priv {
 
         unsigned int echo_skb_max;
         struct sk_buff **echo_skb;
+
+#ifdef CONFIG_CAN_LEDS
+        struct led_trigger *tx_led_trig;
+        char tx_led_trig_name[CAN_LED_NAME_SZ];
+        struct led_trigger *rx_led_trig;
+        char rx_led_trig_name[CAN_LED_NAME_SZ];
+#endif
 };
 
 /*
@@ -98,6 +106,9 @@ u8 can_len2dlc(u8 len);
 struct net_device *alloc_candev(int sizeof_priv, unsigned int echo_skb_max);
 void free_candev(struct net_device *dev);
 
+/* a candev safe wrapper around netdev_priv */
+struct can_priv *safe_candev_priv(struct net_device *dev);
+
 int open_candev(struct net_device *dev);
 void close_candev(struct net_device *dev);
 
diff --git a/include/linux/can/led.h b/include/linux/can/led.h
new file mode 100644
index 000000000000..9c1167baf273
--- /dev/null
+++ b/include/linux/can/led.h
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2012, Fabio Baltieri <fabio.baltieri@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef CAN_LED_H
+#define CAN_LED_H
+
+#include <linux/if.h>
+#include <linux/leds.h>
+
+enum can_led_event {
+        CAN_LED_EVENT_OPEN,
+        CAN_LED_EVENT_STOP,
+        CAN_LED_EVENT_TX,
+        CAN_LED_EVENT_RX,
+};
+
+#ifdef CONFIG_CAN_LEDS
+
+/* keep space for interface name + "-tx"/"-rx" suffix and null terminator */
+#define CAN_LED_NAME_SZ (IFNAMSIZ + 4)
+
+void can_led_event(struct net_device *netdev, enum can_led_event event);
+void devm_can_led_init(struct net_device *netdev);
+int __init can_led_notifier_init(void);
+void __exit can_led_notifier_exit(void);
+
+#else
+
+static inline void can_led_event(struct net_device *netdev,
+                                 enum can_led_event event)
+{
+}
+static inline void devm_can_led_init(struct net_device *netdev)
+{
+}
+static inline int can_led_notifier_init(void)
+{
+        return 0;
+}
+static inline void can_led_notifier_exit(void)
+{
+}
+
+#endif
+
+#endif
diff --git a/include/linux/can/skb.h b/include/linux/can/skb.h
new file mode 100644
index 000000000000..2f0543f7510c
--- /dev/null
+++ b/include/linux/can/skb.h
@@ -0,0 +1,45 @@
+/*
+ * linux/can/skb.h
+ *
+ * Definitions for the CAN network socket buffer
+ *
+ * Copyright (C) 2012 Oliver Hartkopp <socketcan@hartkopp.net>
+ *
+ */
+
+#ifndef CAN_SKB_H
+#define CAN_SKB_H
+
+#include <linux/types.h>
+#include <linux/can.h>
+
+/*
+ * The struct can_skb_priv is used to transport additional information along
+ * with the stored struct can(fd)_frame that can not be contained in existing
+ * struct sk_buff elements.
+ * N.B. that this information must not be modified in cloned CAN sk_buffs.
+ * To modify the CAN frame content or the struct can_skb_priv content
+ * skb_copy() needs to be used instead of skb_clone().
+ */
+
+/**
+ * struct can_skb_priv - private additional data inside CAN sk_buffs
+ * @ifindex:    ifindex of the first interface the CAN frame appeared on
+ * @cf:         align to the following CAN frame at skb->data
+ */
+struct can_skb_priv {
+        int ifindex;
+        struct can_frame cf[0];
+};
+
+static inline struct can_skb_priv *can_skb_prv(struct sk_buff *skb)
+{
+        return (struct can_skb_priv *)(skb->head);
+}
+
+static inline void can_skb_reserve(struct sk_buff *skb)
+{
+        skb_reserve(skb, sizeof(struct can_skb_priv));
+}
+
+#endif /* CAN_SKB_H */