From patchwork Thu Dec 2 08:36:03 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Guangbin Huang X-Patchwork-Id: 12651947 X-Patchwork-Delegate: kuba@kernel.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6B1B7C433EF for ; Thu, 2 Dec 2021 08:40:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345887AbhLBIoU (ORCPT ); Thu, 2 Dec 2021 03:44:20 -0500 Received: from szxga03-in.huawei.com ([45.249.212.189]:29146 "EHLO szxga03-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345821AbhLBIoK (ORCPT ); Thu, 2 Dec 2021 03:44:10 -0500 Received: from kwepemi500001.china.huawei.com (unknown [172.30.72.56]) by szxga03-in.huawei.com (SkyGuard) with ESMTP id 4J4TrR0W8NzXdQv; Thu, 2 Dec 2021 16:38:47 +0800 (CST) Received: from kwepemm600016.china.huawei.com (7.193.23.20) by kwepemi500001.china.huawei.com (7.221.188.114) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.20; Thu, 2 Dec 2021 16:40:46 +0800 Received: from localhost.localdomain (10.67.165.24) by kwepemm600016.china.huawei.com (7.193.23.20) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.20; Thu, 2 Dec 2021 16:40:45 +0800 From: Guangbin Huang To: , , CC: , , , , Subject: [PATCH net-next 9/9] net: hns3: refactor function hns3_get_vector_ring_chain() Date: Thu, 2 Dec 2021 16:36:03 +0800 Message-ID: <20211202083603.25176-10-huangguangbin2@huawei.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20211202083603.25176-1-huangguangbin2@huawei.com> References: <20211202083603.25176-1-huangguangbin2@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.67.165.24] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To kwepemm600016.china.huawei.com (7.193.23.20) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org From: Jie Wang Currently hns3_get_vector_ring_chain() is a bit long. Refactor it by extracting sub process to improve the readability. Signed-off-by: Jie Wang Signed-off-by: Guangbin Huang --- .../net/ethernet/hisilicon/hns3/hns3_enet.c | 121 ++++++++---------- 1 file changed, 53 insertions(+), 68 deletions(-) diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c index 8dcc2d80553b..babc5d7a3b52 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c @@ -4342,87 +4342,70 @@ static int hns3_nic_common_poll(struct napi_struct *napi, int budget) return rx_pkt_total; } -static int hns3_get_vector_ring_chain(struct hns3_enet_tqp_vector *tqp_vector, - struct hnae3_ring_chain_node *head) +static int hns3_create_ring_chain(struct hns3_enet_tqp_vector *tqp_vector, + struct hnae3_ring_chain_node **head, + bool is_tx) { + u32 bit_value = is_tx ? HNAE3_RING_TYPE_TX : HNAE3_RING_TYPE_RX; + u32 field_value = is_tx ? HNAE3_RING_GL_TX : HNAE3_RING_GL_RX; + struct hnae3_ring_chain_node *cur_chain = *head; struct pci_dev *pdev = tqp_vector->handle->pdev; - struct hnae3_ring_chain_node *cur_chain = head; struct hnae3_ring_chain_node *chain; - struct hns3_enet_ring *tx_ring; - struct hns3_enet_ring *rx_ring; - - tx_ring = tqp_vector->tx_group.ring; - if (tx_ring) { - cur_chain->tqp_index = tx_ring->tqp->tqp_index; - hnae3_set_bit(cur_chain->flag, HNAE3_RING_TYPE_B, - HNAE3_RING_TYPE_TX); - hnae3_set_field(cur_chain->int_gl_idx, HNAE3_RING_GL_IDX_M, - HNAE3_RING_GL_IDX_S, HNAE3_RING_GL_TX); - - cur_chain->next = NULL; - - while (tx_ring->next) { - tx_ring = tx_ring->next; - - chain = devm_kzalloc(&pdev->dev, sizeof(*chain), - GFP_KERNEL); - if (!chain) - goto err_free_chain; - - cur_chain->next = chain; - chain->tqp_index = tx_ring->tqp->tqp_index; - hnae3_set_bit(chain->flag, HNAE3_RING_TYPE_B, - HNAE3_RING_TYPE_TX); - hnae3_set_field(chain->int_gl_idx, - HNAE3_RING_GL_IDX_M, - HNAE3_RING_GL_IDX_S, - HNAE3_RING_GL_TX); - - cur_chain = chain; - } - } + struct hns3_enet_ring *ring; - rx_ring = tqp_vector->rx_group.ring; - if (!tx_ring && rx_ring) { - cur_chain->next = NULL; - cur_chain->tqp_index = rx_ring->tqp->tqp_index; - hnae3_set_bit(cur_chain->flag, HNAE3_RING_TYPE_B, - HNAE3_RING_TYPE_RX); - hnae3_set_field(cur_chain->int_gl_idx, HNAE3_RING_GL_IDX_M, - HNAE3_RING_GL_IDX_S, HNAE3_RING_GL_RX); + ring = is_tx ? tqp_vector->tx_group.ring : tqp_vector->rx_group.ring; - rx_ring = rx_ring->next; + if (cur_chain) { + while (cur_chain->next) + cur_chain = cur_chain->next; } - while (rx_ring) { + while (ring) { chain = devm_kzalloc(&pdev->dev, sizeof(*chain), GFP_KERNEL); if (!chain) - goto err_free_chain; - - cur_chain->next = chain; - chain->tqp_index = rx_ring->tqp->tqp_index; + return -ENOMEM; + if (cur_chain) + cur_chain->next = chain; + else + *head = chain; + chain->tqp_index = ring->tqp->tqp_index; hnae3_set_bit(chain->flag, HNAE3_RING_TYPE_B, - HNAE3_RING_TYPE_RX); - hnae3_set_field(chain->int_gl_idx, HNAE3_RING_GL_IDX_M, - HNAE3_RING_GL_IDX_S, HNAE3_RING_GL_RX); + bit_value); + hnae3_set_field(chain->int_gl_idx, + HNAE3_RING_GL_IDX_M, + HNAE3_RING_GL_IDX_S, field_value); cur_chain = chain; - rx_ring = rx_ring->next; + ring = ring->next; } return 0; +} + +static struct hnae3_ring_chain_node * +hns3_get_vector_ring_chain(struct hns3_enet_tqp_vector *tqp_vector) +{ + struct pci_dev *pdev = tqp_vector->handle->pdev; + struct hnae3_ring_chain_node *cur_chain = NULL; + struct hnae3_ring_chain_node *chain; + + if (hns3_create_ring_chain(tqp_vector, &cur_chain, true)) + goto err_free_chain; + + if (hns3_create_ring_chain(tqp_vector, &cur_chain, false)) + goto err_free_chain; + + return cur_chain; err_free_chain: - cur_chain = head->next; while (cur_chain) { chain = cur_chain->next; devm_kfree(&pdev->dev, cur_chain); cur_chain = chain; } - head->next = NULL; - return -ENOMEM; + return NULL; } static void hns3_free_vector_ring_chain(struct hns3_enet_tqp_vector *tqp_vector, @@ -4431,7 +4414,7 @@ static void hns3_free_vector_ring_chain(struct hns3_enet_tqp_vector *tqp_vector, struct pci_dev *pdev = tqp_vector->handle->pdev; struct hnae3_ring_chain_node *chain_tmp, *chain; - chain = head->next; + chain = head; while (chain) { chain_tmp = chain->next; @@ -4546,7 +4529,7 @@ static int hns3_nic_init_vector_data(struct hns3_nic_priv *priv) } for (i = 0; i < priv->vector_num; i++) { - struct hnae3_ring_chain_node vector_ring_chain; + struct hnae3_ring_chain_node *vector_ring_chain; tqp_vector = &priv->tqp_vector[i]; @@ -4556,15 +4539,16 @@ static int hns3_nic_init_vector_data(struct hns3_nic_priv *priv) tqp_vector->tx_group.total_packets = 0; tqp_vector->handle = h; - ret = hns3_get_vector_ring_chain(tqp_vector, - &vector_ring_chain); - if (ret) + vector_ring_chain = hns3_get_vector_ring_chain(tqp_vector); + if (!vector_ring_chain) { + ret = -ENOMEM; goto map_ring_fail; + } ret = h->ae_algo->ops->map_ring_to_vector(h, - tqp_vector->vector_irq, &vector_ring_chain); + tqp_vector->vector_irq, vector_ring_chain); - hns3_free_vector_ring_chain(tqp_vector, &vector_ring_chain); + hns3_free_vector_ring_chain(tqp_vector, vector_ring_chain); if (ret) goto map_ring_fail; @@ -4663,7 +4647,7 @@ static void hns3_clear_ring_group(struct hns3_enet_ring_group *group) static void hns3_nic_uninit_vector_data(struct hns3_nic_priv *priv) { - struct hnae3_ring_chain_node vector_ring_chain; + struct hnae3_ring_chain_node *vector_ring_chain; struct hnae3_handle *h = priv->ae_handle; struct hns3_enet_tqp_vector *tqp_vector; int i; @@ -4678,13 +4662,14 @@ static void hns3_nic_uninit_vector_data(struct hns3_nic_priv *priv) * chain between vector and ring, we should go on to deal with * the remaining options. */ - if (hns3_get_vector_ring_chain(tqp_vector, &vector_ring_chain)) + vector_ring_chain = hns3_get_vector_ring_chain(tqp_vector); + if (!vector_ring_chain) dev_warn(priv->dev, "failed to get ring chain\n"); h->ae_algo->ops->unmap_ring_from_vector(h, - tqp_vector->vector_irq, &vector_ring_chain); + tqp_vector->vector_irq, vector_ring_chain); - hns3_free_vector_ring_chain(tqp_vector, &vector_ring_chain); + hns3_free_vector_ring_chain(tqp_vector, vector_ring_chain); hns3_clear_ring_group(&tqp_vector->rx_group); hns3_clear_ring_group(&tqp_vector->tx_group);