This patch-set is to add support for PTP Sync packet one-step timestamping.
Since ENETC single-step register has to be configured dynamically per
packet for correctionField offeset and UDP checksum update, current
one-step timestamping packet has to be sent only when the last one
completes transmitting on hardware. So, on the TX, this patch handles
one-step timestamping packet as below:
- Trasmit packet immediately if no other one in transfer, or queue to
skb queue if there is already one in transfer.
The test_and_set_bit_lock() is used here to lock and check state.
- Start a work when complete transfer on hardware, to release the bit
lock and to send one skb in skb queue if has.
Changes for v2:
- Rebased.
- Fixed issues from patchwork checks.
- netif_tx_lock for one-step timestamping packet sending.
Changes for v3:
- Used system workqueue.
- Set bit lock when transmitted one-step packet, and scheduled
work when completed. The worker cleared the bit lock, and
transmitted one skb in skb queue if has, instead of a loop.
Yangbo Lu (2):
enetc: mark TX timestamp type per skb
enetc: support PTP Sync packet one-step timestamping
drivers/net/ethernet/freescale/enetc/enetc.c | 193 ++++++++++++++++--
drivers/net/ethernet/freescale/enetc/enetc.h | 23 ++-
.../ethernet/freescale/enetc/enetc_ethtool.c | 3 +-
.../net/ethernet/freescale/enetc/enetc_hw.h | 7 +
4 files changed, 200 insertions(+), 26 deletions(-)
base-commit: 5b489fea977c2b23e26e2f630478da0f4bfdc879
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2.25.1
