[Linuxptp-devel] [PATCH 1/1] msg: append TLV onto all PTP event messages

[Tan Tee Min]

According to IEEE Std 1588-2019 Chapter 6.4 PTP message classes,
all PTP messages can be extended by means of a standard
Type, Length, Value (TLV) extension mechanism.

Signed-off-by: Tan Tee Min <tee.min....@linux.intel.com>
---
 msg.c | 6 +++---
 msg.h | 3 +++
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/msg.c b/msg.c
index c2d358b..ab841f0 100644
--- a/msg.c
+++ b/msg.c
@@ -100,13 +100,13 @@ static uint8_t *msg_suffix(struct ptp_message *m)
 {
        switch (msg_type(m)) {
        case SYNC:
-               return NULL;
+               return m->sync.suffix;
        case DELAY_REQ:
                return m->delay_req.suffix;
        case PDELAY_REQ:
-               return NULL;
+               return m->pdelay_req.suffix;
        case PDELAY_RESP:
-               return NULL;
+               return m->pdelay_resp.suffix;
        case FOLLOW_UP:
                return m->follow_up.suffix;
        case DELAY_RESP:
diff --git a/msg.h b/msg.h
index b7423ee..e3744dc 100644
--- a/msg.h
+++ b/msg.h
@@ -124,6 +124,7 @@ struct announce_msg {
 struct sync_msg {
        struct ptp_header   hdr;
        struct Timestamp    originTimestamp;
+       uint8_t             suffix[0];
 } PACKED;
 
 struct delay_req_msg {
@@ -149,12 +150,14 @@ struct pdelay_req_msg {
        struct ptp_header   hdr;
        struct Timestamp    originTimestamp;
        struct PortIdentity reserved;
+       uint8_t             suffix[0];
 } PACKED;
 
 struct pdelay_resp_msg {
        struct ptp_header   hdr;
        struct Timestamp    requestReceiptTimestamp;
        struct PortIdentity requestingPortIdentity;
+       uint8_t             suffix[0];
 } PACKED;
 
 struct pdelay_resp_fup_msg {
-- 
1.9.1



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