From: YiFei Zhu <[email protected]> The logic is similar to idpf_rx_hwtstamp, but the data is exported as a BPF kfunc instead of appended to an skb.
A idpf_queue_has(PTP, rxq) condition is added to check the queue supports PTP similar to idpf_rx_process_skb_fields. Cc: [email protected] Signed-off-by: YiFei Zhu <[email protected]> Signed-off-by: Mina Almasry <[email protected]> --- drivers/net/ethernet/intel/idpf/xdp.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/drivers/net/ethernet/intel/idpf/xdp.c b/drivers/net/ethernet/intel/idpf/xdp.c index 21ce25b0567f..850389ca66b6 100644 --- a/drivers/net/ethernet/intel/idpf/xdp.c +++ b/drivers/net/ethernet/intel/idpf/xdp.c @@ -2,6 +2,7 @@ /* Copyright (C) 2025 Intel Corporation */ #include "idpf.h" +#include "idpf_ptp.h" #include "idpf_virtchnl.h" #include "xdp.h" #include "xsk.h" @@ -369,6 +370,31 @@ int idpf_xdp_xmit(struct net_device *dev, int n, struct xdp_frame **frames, idpf_xdp_tx_finalize); } +static int idpf_xdpmo_rx_timestamp(const struct xdp_md *ctx, u64 *timestamp) +{ + const struct virtchnl2_rx_flex_desc_adv_nic_3 *rx_desc; + const struct libeth_xdp_buff *xdp = (typeof(xdp))ctx; + const struct idpf_rx_queue *rxq; + u64 cached_time, ts_ns; + u32 ts_high; + + rx_desc = xdp->desc; + rxq = libeth_xdp_buff_to_rq(xdp, typeof(*rxq), xdp_rxq); + + if (!idpf_queue_has(PTP, rxq)) + return -ENODATA; + if (!(rx_desc->ts_low & VIRTCHNL2_RX_FLEX_TSTAMP_VALID)) + return -ENODATA; + + cached_time = READ_ONCE(rxq->cached_phc_time); + + ts_high = le32_to_cpu(rx_desc->ts_high); + ts_ns = idpf_ptp_tstamp_extend_32b_to_64b(cached_time, ts_high); + + *timestamp = ts_ns; + return 0; +} + static int idpf_xdpmo_rx_hash(const struct xdp_md *ctx, u32 *hash, enum xdp_rss_hash_type *rss_type) { @@ -392,6 +418,7 @@ static int idpf_xdpmo_rx_hash(const struct xdp_md *ctx, u32 *hash, } static const struct xdp_metadata_ops idpf_xdpmo = { + .xmo_rx_timestamp = idpf_xdpmo_rx_timestamp, .xmo_rx_hash = idpf_xdpmo_rx_hash, }; base-commit: e05021a829b834fecbd42b173e55382416571b2c -- 2.52.0.rc2.455.g230fcf2819-goog
