From 2b768c43941fc9f86670b470523c8e5708a8080d Mon Sep 17 00:00:00 2001 From: Jeff Guo Date: Fri, 16 Oct 2020 17:44:30 +0800 Subject: [PATCH] net/fm10k: fix vector Rx MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit The scattered receive path should use a wrapper function to achieve the goal of burst maximizing. Bugzilla ID: 516 Fixes: fe65e1e1ce61 ("fm10k: add vector scatter Rx") Cc: stable@dpdk.org Signed-off-by: Jeff Guo Acked-by: Morten Brørup Acked-by: Qi Zhang --- drivers/net/fm10k/fm10k_rxtx_vec.c | 39 ++++++++++++++++++++++++------ 1 file changed, 31 insertions(+), 8 deletions(-) diff --git a/drivers/net/fm10k/fm10k_rxtx_vec.c b/drivers/net/fm10k/fm10k_rxtx_vec.c index eff3933b5c..6fcc939ad9 100644 --- a/drivers/net/fm10k/fm10k_rxtx_vec.c +++ b/drivers/net/fm10k/fm10k_rxtx_vec.c @@ -645,18 +645,15 @@ fm10k_reassemble_packets(struct fm10k_rx_queue *rxq, return pkt_idx; } -/* - * vPMD receive routine that reassembles scattered packets +/** + * vPMD receive routine that reassembles single burst of 32 scattered packets * * Notice: * - don't support ol_flags for rss and csum err - * - nb_pkts > RTE_FM10K_MAX_RX_BURST, only scan RTE_FM10K_MAX_RX_BURST - * numbers of DD bit */ -uint16_t -fm10k_recv_scattered_pkts_vec(void *rx_queue, - struct rte_mbuf **rx_pkts, - uint16_t nb_pkts) +static uint16_t +fm10k_recv_scattered_burst_vec(void *rx_queue, struct rte_mbuf **rx_pkts, + uint16_t nb_pkts) { struct fm10k_rx_queue *rxq = rx_queue; uint8_t split_flags[RTE_FM10K_MAX_RX_BURST] = {0}; @@ -691,6 +688,32 @@ fm10k_recv_scattered_pkts_vec(void *rx_queue, &split_flags[i]); } +/** + * vPMD receive routine that reassembles scattered packets. + */ +uint16_t +fm10k_recv_scattered_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts, + uint16_t nb_pkts) +{ + uint16_t retval = 0; + + while (nb_pkts > RTE_FM10K_MAX_RX_BURST) { + uint16_t burst; + + burst = fm10k_recv_scattered_burst_vec(rx_queue, + rx_pkts + retval, + RTE_FM10K_MAX_RX_BURST); + retval += burst; + nb_pkts -= burst; + if (burst < RTE_FM10K_MAX_RX_BURST) + return retval; + } + + return retval + fm10k_recv_scattered_burst_vec(rx_queue, + rx_pkts + retval, + nb_pkts); +} + static const struct fm10k_txq_ops vec_txq_ops = { .reset = fm10k_reset_tx_queue, }; -- 2.20.1