diff options
Diffstat (limited to 'drivers/net/ethernet/chelsio/cxgb4/sge.c')
| -rw-r--r-- | drivers/net/ethernet/chelsio/cxgb4/sge.c | 36 |
1 files changed, 33 insertions, 3 deletions
diff --git a/drivers/net/ethernet/chelsio/cxgb4/sge.c b/drivers/net/ethernet/chelsio/cxgb4/sge.c index 9162746d7729..b7b93e7a643d 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/sge.c +++ b/drivers/net/ethernet/chelsio/cxgb4/sge.c @@ -1820,11 +1820,34 @@ static noinline int handle_trace_pkt(struct adapter *adap, return 0; } +/** + * cxgb4_sgetim_to_hwtstamp - convert sge time stamp to hw time stamp + * @adap: the adapter + * @hwtstamps: time stamp structure to update + * @sgetstamp: 60bit iqe timestamp + * + * Every ingress queue entry has the 60-bit timestamp, convert that timestamp + * which is in Core Clock ticks into ktime_t and assign it + **/ +static void cxgb4_sgetim_to_hwtstamp(struct adapter *adap, + struct skb_shared_hwtstamps *hwtstamps, + u64 sgetstamp) +{ + u64 ns; + u64 tmp = (sgetstamp * 1000 * 1000 + adap->params.vpd.cclk / 2); + + ns = div_u64(tmp, adap->params.vpd.cclk); + + memset(hwtstamps, 0, sizeof(*hwtstamps)); + hwtstamps->hwtstamp = ns_to_ktime(ns); +} + static void do_gro(struct sge_eth_rxq *rxq, const struct pkt_gl *gl, const struct cpl_rx_pkt *pkt) { struct adapter *adapter = rxq->rspq.adap; struct sge *s = &adapter->sge; + struct port_info *pi; int ret; struct sk_buff *skb; @@ -1842,6 +1865,10 @@ static void do_gro(struct sge_eth_rxq *rxq, const struct pkt_gl *gl, skb->ip_summed = CHECKSUM_UNNECESSARY; skb_record_rx_queue(skb, rxq->rspq.idx); skb_mark_napi_id(skb, &rxq->rspq.napi); + pi = netdev_priv(skb->dev); + if (pi->rxtstamp) + cxgb4_sgetim_to_hwtstamp(adapter, skb_hwtstamps(skb), + gl->sgetstamp); if (rxq->rspq.netdev->features & NETIF_F_RXHASH) skb_set_hash(skb, (__force u32)pkt->rsshdr.hash_val, PKT_HASH_TYPE_L3); @@ -1877,9 +1904,7 @@ int t4_ethrx_handler(struct sge_rspq *q, const __be64 *rsp, struct sge *s = &q->adap->sge; int cpl_trace_pkt = is_t4(q->adap->params.chip) ? CPL_TRACE_PKT : CPL_TRACE_PKT_T5; -#ifdef CONFIG_CHELSIO_T4_FCOE struct port_info *pi; -#endif if (unlikely(*(u8 *)rsp == cpl_trace_pkt)) return handle_trace_pkt(q->adap, si); @@ -1910,6 +1935,10 @@ int t4_ethrx_handler(struct sge_rspq *q, const __be64 *rsp, rxq->stats.pkts++; + pi = netdev_priv(skb->dev); + if (pi->rxtstamp) + cxgb4_sgetim_to_hwtstamp(q->adap, skb_hwtstamps(skb), + si->sgetstamp); if (csum_ok && (pkt->l2info & htonl(RXF_UDP_F | RXF_TCP_F))) { if (!pkt->ip_frag) { skb->ip_summed = CHECKSUM_UNNECESSARY; @@ -1926,7 +1955,6 @@ int t4_ethrx_handler(struct sge_rspq *q, const __be64 *rsp, #define CPL_RX_PKT_FLAGS (RXF_PSH_F | RXF_SYN_F | RXF_UDP_F | \ RXF_TCP_F | RXF_IP_F | RXF_IP6_F | RXF_LRO_F) - pi = netdev_priv(skb->dev); if (!(pkt->l2info & cpu_to_be32(CPL_RX_PKT_FLAGS))) { if ((pkt->l2info & cpu_to_be32(RXF_FCOE_F)) && (pi->fcoe.flags & CXGB_FCOE_ENABLED)) { @@ -2067,6 +2095,8 @@ static int process_responses(struct sge_rspq *q, int budget) unmap_rx_buf(q->adap, &rxq->fl); } + si.sgetstamp = SGE_TIMESTAMP_G( + be64_to_cpu(rc->last_flit)); /* * Last buffer remains mapped so explicitly make it * coherent for CPU access. |