diff options
| author |   Vinicius Costa Gomes <vinicius.gomes@intel.com> | 2019-12-02 15:19:50 -0800 |
|---|---|---|
| committer |   Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2020-01-06 14:19:31 -0800 |
| commit | 81b055205e8ba2d400c8fa5845ba540a4a880a3a (patch) | |
| tree | 95cb91733480eb08c7375ca830c272ed77a40e40 /drivers/net/ethernet/intel/igc/igc_main.c | |
| parent | igc: Add basic skeleton for PTP (diff) | |
| download | linux-dev-81b055205e8ba2d400c8fa5845ba540a4a880a3a.tar.xz linux-dev-81b055205e8ba2d400c8fa5845ba540a4a880a3a.zip | |
igc: Add support for RX timestamping
This adds support for timestamping received packets.
It is based on the i210, as many features of i225 work the same way.
The main difference from i210 is that i225 has support for choosing
the timer register to use when timestamping packets. Right now, we
only support using timer 0. The other difference is that i225 stores
two timestamps in the receive descriptor, right now, we only retrieve
one.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/igc/igc_main.c')
| -rw-r--r-- | drivers/net/ethernet/intel/igc/igc_main.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/igc/igc_main.c b/drivers/net/ethernet/intel/igc/igc_main.c index f242205792e4..504dbb74ca75 100644 --- a/drivers/net/ethernet/intel/igc/igc_main.c +++ b/drivers/net/ethernet/intel/igc/igc_main.c @@ -1299,6 +1299,10 @@ static void igc_process_skb_fields(struct igc_ring *rx_ring, igc_rx_checksum(rx_ring, rx_desc, skb); + if (igc_test_staterr(rx_desc, IGC_RXDADV_STAT_TS) && + !igc_test_staterr(rx_desc, IGC_RXDADV_STAT_TSIP)) + igc_ptp_rx_rgtstamp(rx_ring->q_vector, skb); + skb_record_rx_queue(skb, rx_ring->queue_index); skb->protocol = eth_type_trans(skb, rx_ring->netdev); @@ -1418,6 +1422,12 @@ static struct sk_buff *igc_construct_skb(struct igc_ring *rx_ring, if (unlikely(!skb)) return NULL; + if (unlikely(igc_test_staterr(rx_desc, IGC_RXDADV_STAT_TSIP))) { + igc_ptp_rx_pktstamp(rx_ring->q_vector, va, skb); + va += IGC_TS_HDR_LEN; + size -= IGC_TS_HDR_LEN; + } + /* Determine available headroom for copy */ headlen = size; if (headlen > IGC_RX_HDR_LEN) |