From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id 2020AA04A2; Tue, 5 Nov 2019 15:41:22 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 1EF3F1BF80; Tue, 5 Nov 2019 15:40:01 +0100 (CET) Received: from inva021.nxp.com (inva021.nxp.com [92.121.34.21]) by dpdk.org (Postfix) with ESMTP id 044D41BF45; Tue, 5 Nov 2019 15:39:54 +0100 (CET) Received: from inva021.nxp.com (localhost [127.0.0.1]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id DB3E5200508; Tue, 5 Nov 2019 15:39:53 +0100 (CET) Received: from invc005.ap-rdc01.nxp.com (invc005.ap-rdc01.nxp.com [165.114.16.14]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 27B8920052C; Tue, 5 Nov 2019 15:39:50 +0100 (CET) Received: from GDB1.ap.freescale.net (gdb1.ap.freescale.net [10.232.132.179]) by invc005.ap-rdc01.nxp.com (Postfix) with ESMTP id 4B471402A9; Tue, 5 Nov 2019 22:39:43 +0800 (SGT) From: Nipun Gupta To: dev@dpdk.org Cc: thomas@monjalon.net, ferruh.yigit@intel.com, hemant.agrawal@nxp.com, sachin.saxena@nxp.com, stable@dpdk.org, Radu Bulie , Nipun Gupta Date: Tue, 5 Nov 2019 19:53:19 +0530 Message-Id: <20191105142321.7478-8-nipun.gupta@nxp.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191105142321.7478-1-nipun.gupta@nxp.com> References: <20191011054657.21931-1-nipun.gupta@nxp.com> <20191105142321.7478-1-nipun.gupta@nxp.com> X-Virus-Scanned: ClamAV using ClamSMTP Subject: [dpdk-dev] [PATCH 7/9 v4] mempool/dpaa2: report error on endless loop in mbuf release 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: , Errors-To: dev-bounces@dpdk.org Sender: "dev" From: Radu Bulie When BMAN is not able to accept more buffers, it could be that there are no FBPR's (internal mem provided to bman) left. Report error in such condition. Fixes: 5dc43d22b5ad ("mempool/dpaa2: add hardware offloaded mempool") Cc: stable@dpdk.org Signed-off-by: Radu Bulie Signed-off-by: Nipun Gupta --- drivers/mempool/dpaa2/dpaa2_hw_mempool.c | 27 +++++++++++++++++------- 1 file changed, 19 insertions(+), 8 deletions(-) diff --git a/drivers/mempool/dpaa2/dpaa2_hw_mempool.c b/drivers/mempool/dpaa2/dpaa2_hw_mempool.c index f26c30b00..cc4f837b6 100644 --- a/drivers/mempool/dpaa2/dpaa2_hw_mempool.c +++ b/drivers/mempool/dpaa2/dpaa2_hw_mempool.c @@ -192,7 +192,7 @@ rte_dpaa2_mbuf_release(struct rte_mempool *pool __rte_unused, struct qbman_release_desc releasedesc; struct qbman_swp *swp; int ret; - int i, n; + int i, n, retry_count; uint64_t bufs[DPAA2_MBUF_MAX_ACQ_REL]; if (unlikely(!DPAA2_PER_LCORE_DPIO)) { @@ -225,9 +225,15 @@ rte_dpaa2_mbuf_release(struct rte_mempool *pool __rte_unused, } /* feed them to bman */ - do { - ret = qbman_swp_release(swp, &releasedesc, bufs, n); - } while (ret == -EBUSY); + retry_count = 0; + while ((ret = qbman_swp_release(swp, &releasedesc, bufs, n)) == + -EBUSY) { + retry_count++; + if (retry_count > DPAA2_MAX_TX_RETRY_COUNT) { + DPAA2_MEMPOOL_ERR("bman release retry exceeded, low fbpr?"); + return; + } + } aligned: /* if there are more buffers to free */ @@ -243,10 +249,15 @@ rte_dpaa2_mbuf_release(struct rte_mempool *pool __rte_unused, #endif } - do { - ret = qbman_swp_release(swp, &releasedesc, bufs, - DPAA2_MBUF_MAX_ACQ_REL); - } while (ret == -EBUSY); + retry_count = 0; + while ((ret = qbman_swp_release(swp, &releasedesc, bufs, + DPAA2_MBUF_MAX_ACQ_REL)) == -EBUSY) { + retry_count++; + if (retry_count > DPAA2_MAX_TX_RETRY_COUNT) { + DPAA2_MEMPOOL_ERR("bman release retry exceeded, low fbpr?"); + return; + } + } n += DPAA2_MBUF_MAX_ACQ_REL; } } -- 2.17.1