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modules: openthread: align received frame timestamp to SFD

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OpenThread requires that the `mTimestamp` parameter from the `mRxInfo`
struct points to the end of SFD, i.e. beggining of PHR.

Signed-off-by: Eduardo Montoya <eduardo.montoya@nordicsemi.no>
This commit is contained in:
Eduardo Montoya
2023-04-18 16:11:33 +02:00
committed by Carles Cufí
parent 47cf00058e
commit 760d8fc970
2 changed files with 12 additions and 6 deletions
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5
include/zephyr/net/net_pkt.h
View File

@@ -95,7 +95,10 @@ struct net_pkt {
#endif
#if defined(CONFIG_NET_PKT_TIMESTAMP)
/** Timestamp if available. */
/**
* Timestamp if available.
* For IEEE 802.15.4 packets this refers to the first symbol of the MAC Header.
*/
struct net_ptp_time timestamp;
#endif

13
modules/openthread/platform/radio.c
View File

@@ -38,7 +38,8 @@ LOG_MODULE_REGISTER(LOG_MODULE_NAME, CONFIG_OPENTHREAD_L2_LOG_LEVEL);
#define SHORT_ADDRESS_SIZE 2
#define FCS_SIZE 2
#define FCS_SIZE 2
#define PHR_DURATION 32
#if defined(CONFIG_IEEE802154_2015)
#define ACK_PKT_LENGTH 127
#else
@@ -185,8 +186,9 @@ enum net_verdict ieee802154_radio_handle_ack(struct net_if *iface,
#if defined(CONFIG_NET_PKT_TIMESTAMP)
struct net_ptp_time *pkt_time = net_pkt_timestamp(pkt);
ack_frame.mInfo.mRxInfo.mTimestamp =
pkt_time->second * USEC_PER_SEC + pkt_time->nanosecond / NSEC_PER_USEC;
/* OpenThread expects the timestamp to point to the end of SFD */
ack_frame.mInfo.mRxInfo.mTimestamp = pkt_time->second * USEC_PER_SEC +
pkt_time->nanosecond / NSEC_PER_USEC - PHR_DURATION;
#endif
return NET_OK;
@@ -394,8 +396,9 @@ static void openthread_handle_received_frame(otInstance *instance,
#if defined(CONFIG_NET_PKT_TIMESTAMP)
struct net_ptp_time *pkt_time = net_pkt_timestamp(pkt);
recv_frame.mInfo.mRxInfo.mTimestamp =
pkt_time->second * USEC_PER_SEC + pkt_time->nanosecond / NSEC_PER_USEC;
/* OpenThread expects the timestamp to point to the end of SFD */
recv_frame.mInfo.mRxInfo.mTimestamp = pkt_time->second * USEC_PER_SEC +
pkt_time->nanosecond / NSEC_PER_USEC - PHR_DURATION;
#endif
#if defined(CONFIG_IEEE802154_2015)