From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from rnd-relay.smtp.broadcom.com (rnd-relay.smtp.broadcom.com [192.19.229.170]) by dpdk.org (Postfix) with ESMTP id B77121B057 for ; Tue, 19 Jun 2018 23:31:07 +0200 (CEST) Received: from nis-sj1-27.broadcom.com (nis-sj1-27.lvn.broadcom.net [10.75.144.136]) by rnd-relay.smtp.broadcom.com (Postfix) with ESMTP id 9B36530C08C; Tue, 19 Jun 2018 14:31:02 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.10.3 rnd-relay.smtp.broadcom.com 9B36530C08C DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=broadcom.com; s=dkimrelay; t=1529443862; bh=xEmSipGGTkLtumQ141pU1gNSJTPQlK/L1QRmqFMKWUc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gbJvaQD8YZHYKSmYr0hfcedFvm0sfO+yHRiTdRShLUTX9hfBxch33hSQrEtAu0oC6 IobEz9OagOWLKgjE8si45/up7TDm127vK+FqslQWsbTqsU50HYKQkau8AJUqQUgjkN LFQ1bpZSL++69o9wMkWmzODAEys5dKVYQU0sao9o= Received: from C02VPB22HTD6.dhcp.broadcom.net (c02vpb22htd6.dhcp.broadcom.net [10.136.50.120]) by nis-sj1-27.broadcom.com (Postfix) with ESMTP id 7F442AC06AD; Tue, 19 Jun 2018 14:31:02 -0700 (PDT) From: Ajit Khaparde To: dev@dpdk.org Cc: ferruh.yigit@intel.com Date: Tue, 19 Jun 2018 14:30:30 -0700 Message-Id: <20180619213058.12273-4-ajit.khaparde@broadcom.com> X-Mailer: git-send-email 2.15.1 (Apple Git-101) In-Reply-To: <20180619213058.12273-1-ajit.khaparde@broadcom.com> References: <20180619213058.12273-1-ajit.khaparde@broadcom.com> Subject: [dpdk-dev] [PATCH 03/31] net/bnxt: Rx processing optimization X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 19 Jun 2018 21:31:08 -0000 1) Use nb_rx_pkts instead of checking producer indices of Rx and aggregator rings to decide if any Rx completions were processed. 2) Post Rx buffers early in Rx processing instead of waiting for the budgeted burst quota. 3) Ring Rx CQ DB after Rx buffers are posted. Signed-off-by: Ajit Khaparde --- drivers/net/bnxt/bnxt_rxr.c | 12 ++++++++---- drivers/net/bnxt/bnxt_rxr.h | 2 ++ 2 files changed, 10 insertions(+), 4 deletions(-) diff --git a/drivers/net/bnxt/bnxt_rxr.c b/drivers/net/bnxt/bnxt_rxr.c index 9d8842926..b6b72c553 100644 --- a/drivers/net/bnxt/bnxt_rxr.c +++ b/drivers/net/bnxt/bnxt_rxr.c @@ -540,8 +540,8 @@ uint16_t bnxt_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, int rc = 0; bool evt = false; - /* If Rx Q was stopped return */ - if (rxq->rx_deferred_start) + /* If Rx Q was stopped return. RxQ0 cannot be stopped. */ + if (rxq->rx_deferred_start && rxq->queue_id) return 0; /* Handle RX burst request */ @@ -572,10 +572,13 @@ uint16_t bnxt_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, raw_cons = NEXT_RAW_CMP(raw_cons); if (nb_rx_pkts == nb_pkts || evt) break; + /* Post some Rx buf early in case of larger burst processing */ + if (nb_rx_pkts == BNXT_RX_POST_THRESH) + B_RX_DB(rxr->rx_doorbell, rxr->rx_prod); } cpr->cp_raw_cons = raw_cons; - if ((prod == rxr->rx_prod && ag_prod == rxr->ag_prod) && !evt) { + if (!nb_rx_pkts && !evt) { /* * For PMD, there is no need to keep on pushing to REARM * the doorbell if there are no new completions @@ -583,7 +586,6 @@ uint16_t bnxt_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, return nb_rx_pkts; } - B_CP_DIS_DB(cpr, cpr->cp_raw_cons); if (prod != rxr->rx_prod) B_RX_DB(rxr->rx_doorbell, rxr->rx_prod); @@ -591,6 +593,8 @@ uint16_t bnxt_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, if (ag_prod != rxr->ag_prod) B_RX_DB(rxr->ag_doorbell, rxr->ag_prod); + B_CP_DIS_DB(cpr, cpr->cp_raw_cons); + /* Attempt to alloc Rx buf in case of a previous allocation failure. */ if (rc == -ENOMEM) { int i; diff --git a/drivers/net/bnxt/bnxt_rxr.h b/drivers/net/bnxt/bnxt_rxr.h index 5b28f0321..3815a2199 100644 --- a/drivers/net/bnxt/bnxt_rxr.h +++ b/drivers/net/bnxt/bnxt_rxr.h @@ -54,6 +54,8 @@ #define RX_CMP_IP_CS_UNKNOWN(rxcmp1) \ !((rxcmp1)->flags2 & RX_CMP_IP_CS_BITS) +#define BNXT_RX_POST_THRESH 32 + enum pkt_hash_types { PKT_HASH_TYPE_NONE, /* Undefined type */ PKT_HASH_TYPE_L2, /* Input: src_MAC, dest_MAC */ -- 2.15.1 (Apple Git-101)