From patchwork Fri Jan 26 17:31:54 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ajit Khaparde X-Patchwork-Id: 34557 X-Patchwork-Delegate: ferruh.yigit@amd.com Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id B576E1B356; Fri, 26 Jan 2018 18:33:56 +0100 (CET) Received: from rnd-relay.smtp.broadcom.com (rnd-relay.smtp.broadcom.com [192.19.229.170]) by dpdk.org (Postfix) with ESMTP id 796E41B346; Fri, 26 Jan 2018 18:33:55 +0100 (CET) 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 3FDB130C01E; Fri, 26 Jan 2018 09:33:54 -0800 (PST) Received: from C02VPB22HTD6.vpn.broadcom.net (unknown [10.10.117.193]) by nis-sj1-27.broadcom.com (Postfix) with ESMTP id 858C3AC0782; Fri, 26 Jan 2018 09:33:53 -0800 (PST) From: Ajit Khaparde To: dev@dpdk.org Cc: ferruh.yigit@intel.com, stable@dpdk.org Date: Fri, 26 Jan 2018 09:31:54 -0800 Message-Id: <20180126173200.14458-2-ajit.khaparde@broadcom.com> X-Mailer: git-send-email 2.14.3 (Apple Git-98) In-Reply-To: <20180126173200.14458-1-ajit.khaparde@broadcom.com> References: <20180126173200.14458-1-ajit.khaparde@broadcom.com> Subject: [dpdk-dev] [PATCH v3 1/7] net/bnxt: fix size of tx ring in HW 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" During Tx ring allocation, the actual ring size configured in the HW ends up being twice the number of txd parameter specified to the driver. The power of 2 ring size wrongly adds a +1 while sending the ring create command to the FW. Fixes: 6eb3cc2294fd ("net/bnxt: add initial Tx code") Cc: stable@dpdk.org Signed-off-by: Ajit Khaparde --- drivers/net/bnxt/bnxt_txr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/bnxt/bnxt_txr.c b/drivers/net/bnxt/bnxt_txr.c index ac77434b7..2f2c87119 100644 --- a/drivers/net/bnxt/bnxt_txr.c +++ b/drivers/net/bnxt/bnxt_txr.c @@ -101,7 +101,7 @@ int bnxt_init_tx_ring_struct(struct bnxt_tx_queue *txq, unsigned int socket_id) if (ring == NULL) return -ENOMEM; txr->tx_ring_struct = ring; - ring->ring_size = rte_align32pow2(txq->nb_tx_desc + 1); + ring->ring_size = rte_align32pow2(txq->nb_tx_desc); ring->ring_mask = ring->ring_size - 1; ring->bd = (void *)txr->tx_desc_ring; ring->bd_dma = txr->tx_desc_mapping;