From patchwork Wed Sep 1 00:08:04 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sukadev Bhattiprolu X-Patchwork-Id: 504887 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8F7F4C4320E for ; Wed, 1 Sep 2021 00:10:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6D6AC6102A for ; Wed, 1 Sep 2021 00:10:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242434AbhIAAKz (ORCPT ); Tue, 31 Aug 2021 20:10:55 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:57682 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243347AbhIAAJP (ORCPT ); Tue, 31 Aug 2021 20:09:15 -0400 Received: from pps.filterd (m0098394.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.43/8.16.0.43) with SMTP id 18103Hu0112134 for ; Tue, 31 Aug 2021 20:08:19 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding; s=pp1; bh=+mOJKw62qtzdHY6xYokt+enZZkNUKw9d3pnZYRY5hGY=; b=HIWIpojFhRMqnACyykFU8TEakCudB6qhnovkg5p/RNnkp8+Wv44J/VG9TLehMwZcY1mp fqZkdZJi6ad9XhOKRBhp0GMeP48vdtwGWqAbl/JyjiDJEbMZrqxngxTbZBbQZsidjFjp ZdeWDCDCvVSOjRJk9sAdPR7YTz8O/oSwrIyS7AwJqdnZcg3XOfwthfS2h2MgA9l8XCIa Zl+XeYNM2X9CMMTvtWZrHgnkDrMFRZvBOQSrYpEY7xV6waEpVz7F7E3B014lHsxpzORn hAaajkvhHrO0lcBYrep5S70zt19EI4xwWOZCGPyMRLoHE/9MVoKogoh3gAgLaS6q4Tlc jw== Received: from ppma03dal.us.ibm.com (b.bd.3ea9.ip4.static.sl-reverse.com [169.62.189.11]) by mx0a-001b2d01.pphosted.com with ESMTP id 3asx598nk5-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT) for ; Tue, 31 Aug 2021 20:08:19 -0400 Received: from pps.filterd (ppma03dal.us.ibm.com [127.0.0.1]) by ppma03dal.us.ibm.com (8.16.1.2/8.16.1.2) with SMTP id 17VNudeh014296 for ; Wed, 1 Sep 2021 00:08:18 GMT Received: from b03cxnp07029.gho.boulder.ibm.com (b03cxnp07029.gho.boulder.ibm.com [9.17.130.16]) by ppma03dal.us.ibm.com with ESMTP id 3aqcsd208g-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT) for ; Wed, 01 Sep 2021 00:08:18 +0000 Received: from b03ledav004.gho.boulder.ibm.com (b03ledav004.gho.boulder.ibm.com [9.17.130.235]) by b03cxnp07029.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 18108GiM42729906 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 1 Sep 2021 00:08:17 GMT Received: from b03ledav004.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id DD64B7806B; Wed, 1 Sep 2021 00:08:16 +0000 (GMT) Received: from b03ledav004.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id A4DB67805C; Wed, 1 Sep 2021 00:08:15 +0000 (GMT) Received: from suka-w540.ibmuc.com (unknown [9.65.237.107]) by b03ledav004.gho.boulder.ibm.com (Postfix) with ESMTP; Wed, 1 Sep 2021 00:08:15 +0000 (GMT) From: Sukadev Bhattiprolu To: netdev@vger.kernel.org Cc: Brian King , cforno12@linux.ibm.com, Dany Madden , Rick Lindsley Subject: [PATCH net-next 1/9] ibmvnic: Consolidate code in replenish_rx_pool() Date: Tue, 31 Aug 2021 17:08:04 -0700 Message-Id: <20210901000812.120968-2-sukadev@linux.ibm.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210901000812.120968-1-sukadev@linux.ibm.com> References: <20210901000812.120968-1-sukadev@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: oQ42lvPVj5kgHGlGPQwUrFrPTA458x3R X-Proofpoint-ORIG-GUID: oQ42lvPVj5kgHGlGPQwUrFrPTA458x3R X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.391, 18.0.790 definitions=2021-08-31_10:2021-08-31,2021-08-31 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 priorityscore=1501 phishscore=0 spamscore=0 adultscore=0 impostorscore=0 clxscore=1015 mlxscore=0 mlxlogscore=999 suspectscore=0 lowpriorityscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2107140000 definitions=main-2108310133 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org For better readability, consolidate related code in replenish_rx_pool() and add some comments. Signed-off-by: Sukadev Bhattiprolu Reviewed-by: Dany Madden --- drivers/net/ethernet/ibm/ibmvnic.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c index a775c69e4fd7..e8b1231be485 100644 --- a/drivers/net/ethernet/ibm/ibmvnic.c +++ b/drivers/net/ethernet/ibm/ibmvnic.c @@ -371,6 +371,8 @@ static void replenish_rx_pool(struct ibmvnic_adapter *adapter, } index = pool->free_map[pool->next_free]; + pool->free_map[pool->next_free] = IBMVNIC_INVALID_MAP; + pool->next_free = (pool->next_free + 1) % pool->size; if (pool->rx_buff[index].skb) dev_err(dev, "Inconsistent free_map!\n"); @@ -380,14 +382,15 @@ static void replenish_rx_pool(struct ibmvnic_adapter *adapter, dst = pool->long_term_buff.buff + offset; memset(dst, 0, pool->buff_size); dma_addr = pool->long_term_buff.addr + offset; - pool->rx_buff[index].data = dst; - pool->free_map[pool->next_free] = IBMVNIC_INVALID_MAP; + /* add the skb to an rx_buff in the pool */ + pool->rx_buff[index].data = dst; pool->rx_buff[index].dma = dma_addr; pool->rx_buff[index].skb = skb; pool->rx_buff[index].pool_index = pool->index; pool->rx_buff[index].size = pool->buff_size; + /* queue the rx_buff for the next send_subcrq_indirect */ sub_crq = &ind_bufp->indir_arr[ind_bufp->index++]; memset(sub_crq, 0, sizeof(*sub_crq)); sub_crq->rx_add.first = IBMVNIC_CRQ_CMD; @@ -405,7 +408,8 @@ static void replenish_rx_pool(struct ibmvnic_adapter *adapter, shift = 8; #endif sub_crq->rx_add.len = cpu_to_be32(pool->buff_size << shift); - pool->next_free = (pool->next_free + 1) % pool->size; + + /* if send_subcrq_indirect queue is full, flush to VIOS */ if (ind_bufp->index == IBMVNIC_MAX_IND_DESCS || i == count - 1) { lpar_rc =