From mboxrd@z Thu Jan 1 00:00:00 1970 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=-13.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,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 20C06C2D0E4 for ; Sun, 15 Nov 2020 09:34:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C963222450 for ; Sun, 15 Nov 2020 09:34:43 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="TkEIkF5k" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726789AbgKOJeW (ORCPT ); Sun, 15 Nov 2020 04:34:22 -0500 Received: from mail.kernel.org ([198.145.29.99]:40174 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726438AbgKOJeU (ORCPT ); Sun, 15 Nov 2020 04:34:20 -0500 Received: from localhost (thunderhill.nvidia.com [216.228.112.22]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id BE13322450; Sun, 15 Nov 2020 09:34:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1605432859; bh=vkpM12b3WQ5XdHmd5GCHyUIjHPRpZzIPWXw8gsEYoz8=; h=From:To:Cc:Subject:Date:From; b=TkEIkF5kfTv3EEzzD61loboCpHkGBodlxy9knF6yyPxhkNxCUGn8+KGhecm5nBdnn FXi9VHzjy089L2LdJP7BoHABOCXzf8xC5bF1hXTEDOhHaDTmM/hcqiqaJQ4XpOSq6Y FwJvotxzku7pqNEer6n7JK/+DxyflK5fSvTfnMVA= From: Leon Romanovsky To: Doug Ledford , Jason Gunthorpe Cc: Leon Romanovsky , linux-rdma@vger.kernel.org Subject: [PATCH rdma-next] RDMA/counter: Combine allocation and bind logic Date: Sun, 15 Nov 2020 11:34:05 +0200 Message-Id: <20201115093405.129689-1-leon@kernel.org> X-Mailer: git-send-email 2.28.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org From: Leon Romanovsky RDMA counters are allocated and bounded to QP immediately after that. Only after this two step process they are really usable. By combining the logic, we are ensuring that once counter is returned to the caller, it will have everything set. Signed-off-by: Leon Romanovsky --- drivers/infiniband/core/counters.c | 130 +++++++++++++---------------- 1 file changed, 58 insertions(+), 72 deletions(-) diff --git a/drivers/infiniband/core/counters.c b/drivers/infiniband/core/counters.c index e4ff0d3328b6..4e1ec4479e0b 100644 --- a/drivers/infiniband/core/counters.c +++ b/drivers/infiniband/core/counters.c @@ -64,8 +64,40 @@ int rdma_counter_set_auto_mode(struct ib_device *dev, u8 port, return ret; } -static struct rdma_counter *rdma_counter_alloc(struct ib_device *dev, u8 port, - enum rdma_nl_counter_mode mode) +static void auto_mode_init_counter(struct rdma_counter *counter, + const struct ib_qp *qp, + enum rdma_nl_counter_mask new_mask) +{ + struct auto_mode_param *param = &counter->mode.param; + + counter->mode.mode = RDMA_COUNTER_MODE_AUTO; + counter->mode.mask = new_mask; + + if (new_mask & RDMA_COUNTER_MASK_QP_TYPE) + param->qp_type = qp->qp_type; +} + +static int __rdma_counter_bind_qp(struct rdma_counter *counter, + struct ib_qp *qp) +{ + int ret; + + if (qp->counter) + return -EINVAL; + + if (!qp->device->ops.counter_bind_qp) + return -EOPNOTSUPP; + + mutex_lock(&counter->lock); + ret = qp->device->ops.counter_bind_qp(counter, qp); + mutex_unlock(&counter->lock); + + return ret; +} + +static struct rdma_counter *alloc_and_bind(struct ib_device *dev, u8 port, + struct ib_qp *qp, + enum rdma_nl_counter_mode mode) { struct rdma_port_counter *port_counter; struct rdma_counter *counter; @@ -88,11 +120,19 @@ static struct rdma_counter *rdma_counter_alloc(struct ib_device *dev, u8 port, port_counter = &dev->port_data[port].port_counter; mutex_lock(&port_counter->lock); - if (mode == RDMA_COUNTER_MODE_MANUAL) { + switch (mode) { + case RDMA_COUNTER_MODE_MANUAL: ret = __counter_set_mode(&port_counter->mode, RDMA_COUNTER_MODE_MANUAL, 0); if (ret) goto err_mode; + break; + case RDMA_COUNTER_MODE_AUTO: + auto_mode_init_counter(counter, qp, port_counter->mode.mask); + break; + default: + ret = -EOPNOTSUPP; + goto err_mode; } port_counter->num_counters++; @@ -102,6 +142,12 @@ static struct rdma_counter *rdma_counter_alloc(struct ib_device *dev, u8 port, kref_init(&counter->kref); mutex_init(&counter->lock); + ret = __rdma_counter_bind_qp(counter, qp); + if (ret) + goto err_mode; + + rdma_restrack_parent_name(&counter->res, &qp->res); + rdma_restrack_add(&counter->res); return counter; err_mode: @@ -132,19 +178,6 @@ static void rdma_counter_free(struct rdma_counter *counter) kfree(counter); } -static void auto_mode_init_counter(struct rdma_counter *counter, - const struct ib_qp *qp, - enum rdma_nl_counter_mask new_mask) -{ - struct auto_mode_param *param = &counter->mode.param; - - counter->mode.mode = RDMA_COUNTER_MODE_AUTO; - counter->mode.mask = new_mask; - - if (new_mask & RDMA_COUNTER_MASK_QP_TYPE) - param->qp_type = qp->qp_type; -} - static bool auto_mode_match(struct ib_qp *qp, struct rdma_counter *counter, enum rdma_nl_counter_mask auto_mask) { @@ -161,24 +194,6 @@ static bool auto_mode_match(struct ib_qp *qp, struct rdma_counter *counter, return match; } -static int __rdma_counter_bind_qp(struct rdma_counter *counter, - struct ib_qp *qp) -{ - int ret; - - if (qp->counter) - return -EINVAL; - - if (!qp->device->ops.counter_bind_qp) - return -EOPNOTSUPP; - - mutex_lock(&counter->lock); - ret = qp->device->ops.counter_bind_qp(counter, qp); - mutex_unlock(&counter->lock); - - return ret; -} - static int __rdma_counter_unbind_qp(struct ib_qp *qp) { struct rdma_counter *counter = qp->counter; @@ -247,13 +262,6 @@ static struct rdma_counter *rdma_get_counter_auto_mode(struct ib_qp *qp, return counter; } -static void rdma_counter_res_add(struct rdma_counter *counter, - struct ib_qp *qp) -{ - rdma_restrack_parent_name(&counter->res, &qp->res); - rdma_restrack_add(&counter->res); -} - static void counter_release(struct kref *kref) { struct rdma_counter *counter; @@ -293,19 +301,9 @@ int rdma_counter_bind_qp_auto(struct ib_qp *qp, u8 port) return ret; } } else { - counter = rdma_counter_alloc(dev, port, RDMA_COUNTER_MODE_AUTO); + counter = alloc_and_bind(dev, port, qp, RDMA_COUNTER_MODE_AUTO); if (!counter) return -ENOMEM; - - auto_mode_init_counter(counter, qp, port_counter->mode.mask); - - ret = __rdma_counter_bind_qp(counter, qp); - if (ret) { - rdma_counter_free(counter); - return ret; - } - - rdma_counter_res_add(counter, qp); } return 0; @@ -419,15 +417,6 @@ static struct ib_qp *rdma_counter_get_qp(struct ib_device *dev, u32 qp_num) return NULL; } -static int rdma_counter_bind_qp_manual(struct rdma_counter *counter, - struct ib_qp *qp) -{ - if ((counter->device != qp->device) || (counter->port != qp->port)) - return -EINVAL; - - return __rdma_counter_bind_qp(counter, qp); -} - static struct rdma_counter *rdma_get_counter_by_id(struct ib_device *dev, u32 counter_id) { @@ -475,7 +464,12 @@ int rdma_counter_bind_qpn(struct ib_device *dev, u8 port, goto err_task; } - ret = rdma_counter_bind_qp_manual(counter, qp); + if ((counter->device != qp->device) || (counter->port != qp->port)) { + ret = -EINVAL; + goto err_task; + } + + ret = __rdma_counter_bind_qp(counter, qp); if (ret) goto err_task; @@ -520,26 +514,18 @@ int rdma_counter_bind_qpn_alloc(struct ib_device *dev, u8 port, goto err; } - counter = rdma_counter_alloc(dev, port, RDMA_COUNTER_MODE_MANUAL); + counter = alloc_and_bind(dev, port, qp, RDMA_COUNTER_MODE_MANUAL); if (!counter) { ret = -ENOMEM; goto err; } - ret = rdma_counter_bind_qp_manual(counter, qp); - if (ret) - goto err_bind; - if (counter_id) *counter_id = counter->id; - rdma_counter_res_add(counter, qp); - rdma_restrack_put(&qp->res); - return ret; + return 0; -err_bind: - rdma_counter_free(counter); err: rdma_restrack_put(&qp->res); return ret; -- 2.28.0