[PATCH net-next 1/4] net: ptp: introduce enum ptp_msg_type

[Christian Eggers]

Using a PTP wide enum will obsolete different driver internal defines
and uses of magic numbers.

Signed-off-by: Christian Eggers <cegg...@arri.de>
Cc: Kurt Kanzenbach <k...@linutronix.de>
---
 include/linux/ptp_classify.h | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/include/linux/ptp_classify.h b/include/linux/ptp_classify.h
index 56b2d7d66177..83024220cb42 100644
--- a/include/linux/ptp_classify.h
+++ b/include/linux/ptp_classify.h
@@ -93,6 +93,13 @@ unsigned int ptp_classify_raw(const struct sk_buff *skb);
  */
 struct ptp_header *ptp_parse_header(struct sk_buff *skb, unsigned int type);
 
+enum ptp_msg_type {
+       PTP_MSGTYPE_SYNC        = 0x0,
+       PTP_MSGTYPE_DELAY_REQ   = 0x1,
+       PTP_MSGTYPE_PDELAY_REQ  = 0x2,
+       PTP_MSGTYPE_PDELAY_RESP = 0x3,
+};
+
 /**
  * ptp_get_msgtype - Extract ptp message type from given header
  * @hdr: ptp header
@@ -103,10 +110,10 @@ struct ptp_header *ptp_parse_header(struct sk_buff *skb, 
unsigned int type);
  *
  * Return: The message type
  */
-static inline u8 ptp_get_msgtype(const struct ptp_header *hdr,
+static inline enum ptp_msg_type ptp_get_msgtype(const struct ptp_header *hdr,
                                 unsigned int type)
 {
-       u8 msgtype;
+       enum ptp_msg_type msgtype;
 
        if (unlikely(type & PTP_CLASS_V1)) {
                /* msg type is located at the control field for ptp v1 */
@@ -132,13 +139,13 @@ static inline struct ptp_header *ptp_parse_header(struct 
sk_buff *skb,
 {
        return NULL;
 }
-static inline u8 ptp_get_msgtype(const struct ptp_header *hdr,
+static inline enum ptp_msg_type ptp_get_msgtype(const struct ptp_header *hdr,
                                 unsigned int type)
 {
        /* The return is meaningless. The stub function would not be
         * executed since no available header from ptp_parse_header.
         */
-       return 0;
+       return PTP_MSGTYPE_SYNC;
 }
 #endif
 #endif /* _PTP_CLASSIFY_H_ */
-- 
Christian Eggers
Embedded software developer

Arnold & Richter Cine Technik GmbH & Co. Betriebs KG
Sitz: Muenchen - Registergericht: Amtsgericht Muenchen - Handelsregisternummer: 
HRA 57918
Persoenlich haftender Gesellschafter: Arnold & Richter Cine Technik GmbH
Sitz: Muenchen - Registergericht: Amtsgericht Muenchen - Handelsregisternummer: 
HRB 54477
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