From a1cdb4f884730204b89feec394de801badf47847 Mon Sep 17 00:00:00 2001 From: Wenzhuo Lu Date: Tue, 26 Mar 2019 14:16:50 +0800 Subject: [PATCH] net/ice: support Rx scatter AVX2 vector Signed-off-by: Wenzhuo Lu Acked-by: Qi Zhang --- drivers/net/ice/ice_rxtx.c | 10 +++-- drivers/net/ice/ice_rxtx.h | 3 ++ drivers/net/ice/ice_rxtx_vec_avx2.c | 64 +++++++++++++++++++++++++++++ 3 files changed, 74 insertions(+), 3 deletions(-) diff --git a/drivers/net/ice/ice_rxtx.c b/drivers/net/ice/ice_rxtx.c index 28d597464d..860155f16c 100644 --- a/drivers/net/ice/ice_rxtx.c +++ b/drivers/net/ice/ice_rxtx.c @@ -1506,7 +1506,8 @@ ice_dev_supported_ptypes_get(struct rte_eth_dev *dev) #ifdef RTE_ARCH_X86 if (dev->rx_pkt_burst == ice_recv_pkts_vec || dev->rx_pkt_burst == ice_recv_scattered_pkts_vec || - dev->rx_pkt_burst == ice_recv_pkts_vec_avx2) + dev->rx_pkt_burst == ice_recv_pkts_vec_avx2 || + dev->rx_pkt_burst == ice_recv_scattered_pkts_vec_avx2) return ptypes; #endif @@ -2258,9 +2259,12 @@ ice_set_rx_function(struct rte_eth_dev *dev) if (dev->data->scattered_rx) { PMD_DRV_LOG(DEBUG, - "Using Vector Scattered Rx (port %d).", + "Using %sVector Scattered Rx (port %d).", + use_avx2 ? "avx2 " : "", dev->data->port_id); - dev->rx_pkt_burst = ice_recv_scattered_pkts_vec; + dev->rx_pkt_burst = use_avx2 ? + ice_recv_scattered_pkts_vec_avx2 : + ice_recv_scattered_pkts_vec; } else { PMD_DRV_LOG(DEBUG, "Using %sVector Rx (port %d).", use_avx2 ? "avx2 " : "", diff --git a/drivers/net/ice/ice_rxtx.h b/drivers/net/ice/ice_rxtx.h index d1c9b92dee..dfc3224ccb 100644 --- a/drivers/net/ice/ice_rxtx.h +++ b/drivers/net/ice/ice_rxtx.h @@ -181,4 +181,7 @@ uint16_t ice_xmit_pkts_vec(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts); uint16_t ice_recv_pkts_vec_avx2(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts); +uint16_t ice_recv_scattered_pkts_vec_avx2(void *rx_queue, + struct rte_mbuf **rx_pkts, + uint16_t nb_pkts); #endif /* _ICE_RXTX_H_ */ diff --git a/drivers/net/ice/ice_rxtx_vec_avx2.c b/drivers/net/ice/ice_rxtx_vec_avx2.c index 42f761d4a6..2459ff33ba 100644 --- a/drivers/net/ice/ice_rxtx_vec_avx2.c +++ b/drivers/net/ice/ice_rxtx_vec_avx2.c @@ -620,3 +620,67 @@ ice_recv_pkts_vec_avx2(void *rx_queue, struct rte_mbuf **rx_pkts, { return _ice_recv_raw_pkts_vec_avx2(rx_queue, rx_pkts, nb_pkts, NULL); } + +/** + * vPMD receive routine that reassembles single burst of 32 scattered packets + * Notice: + * - nb_pkts < ICE_DESCS_PER_LOOP, just return no packet + */ +static uint16_t +ice_recv_scattered_burst_vec_avx2(void *rx_queue, struct rte_mbuf **rx_pkts, + uint16_t nb_pkts) +{ + struct ice_rx_queue *rxq = rx_queue; + uint8_t split_flags[ICE_VPMD_RX_BURST] = {0}; + + /* get some new buffers */ + uint16_t nb_bufs = _ice_recv_raw_pkts_vec_avx2(rxq, rx_pkts, nb_pkts, + split_flags); + if (nb_bufs == 0) + return 0; + + /* happy day case, full burst + no packets to be joined */ + const uint64_t *split_fl64 = (uint64_t *)split_flags; + + if (!rxq->pkt_first_seg && + split_fl64[0] == 0 && split_fl64[1] == 0 && + split_fl64[2] == 0 && split_fl64[3] == 0) + return nb_bufs; + + /* reassemble any packets that need reassembly*/ + unsigned int i = 0; + + if (!rxq->pkt_first_seg) { + /* find the first split flag, and only reassemble then*/ + while (i < nb_bufs && !split_flags[i]) + i++; + if (i == nb_bufs) + return nb_bufs; + } + return i + ice_rx_reassemble_packets(rxq, &rx_pkts[i], nb_bufs - i, + &split_flags[i]); +} + +/** + * vPMD receive routine that reassembles scattered packets. + * Main receive routine that can handle arbitrary burst sizes + * Notice: + * - nb_pkts < ICE_DESCS_PER_LOOP, just return no packet + */ +uint16_t +ice_recv_scattered_pkts_vec_avx2(void *rx_queue, struct rte_mbuf **rx_pkts, + uint16_t nb_pkts) +{ + uint16_t retval = 0; + + while (nb_pkts > ICE_VPMD_RX_BURST) { + uint16_t burst = ice_recv_scattered_burst_vec_avx2(rx_queue, + rx_pkts + retval, ICE_VPMD_RX_BURST); + retval += burst; + nb_pkts -= burst; + if (burst < ICE_VPMD_RX_BURST) + return retval; + } + return retval + ice_recv_scattered_burst_vec_avx2(rx_queue, + rx_pkts + retval, nb_pkts); +} -- 2.20.1