From patchwork Wed Jul 22 22:10:35 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Lobakin X-Patchwork-Id: 1334211 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=marvell.com Authentication-Results: ozlabs.org; dkim=fail reason="key not found in DNS" header.d=marvell.com header.i=@marvell.com header.a=rsa-sha256 header.s=pfpt0818 header.b=xoxR3ZqI; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4BBqSj588Nz9sTQ for ; Thu, 23 Jul 2020 08:12:05 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1733264AbgGVWMC (ORCPT ); Wed, 22 Jul 2020 18:12:02 -0400 Received: from mx0b-0016f401.pphosted.com ([67.231.156.173]:20406 "EHLO mx0b-0016f401.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1733226AbgGVWMA (ORCPT ); Wed, 22 Jul 2020 18:12:00 -0400 Received: from pps.filterd (m0045851.ppops.net [127.0.0.1]) by mx0b-0016f401.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 06MM6g1Z019807; Wed, 22 Jul 2020 15:11:43 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=marvell.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding : content-type; s=pfpt0818; bh=oSzLwsref012AkzpvzgFjlOhikclbMl+wXgWBDBRSgo=; b=xoxR3ZqII+0S6TcGtqDB7U2nAFbDJCWA3d07R3178IOIPsF6dQisuCotOt6BLncOA3Yo GQOIbOlw7o6A7SHSohfxTz49FhgHIiid5OihGqw3Qpd2dwRYcD/nzVL0KUhq1sjb9EZ7 t+Eg49oc2+OH5Spj6k9A94b4fJC3c6TR0tbLRDXEw6+36Z11QYk7tCZ9mrNMFnsgon73 w7V0VruHj8IF/f8bKY6aPiNOC5KJ8I1frfaDl1SE/IDD6DB9fHwjeMRTzGhFob0P6bco nwviJDz0XItmBqnu/rzfKruCZ+Ii6pZ+VIIusx8Koq5asnexY5QGW1R76JkYokYp4wp+ sA== Received: from sc-exch02.marvell.com ([199.233.58.182]) by mx0b-0016f401.pphosted.com with ESMTP id 32c0kkt0m2-2 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT); Wed, 22 Jul 2020 15:11:43 -0700 Received: from DC5-EXCH02.marvell.com (10.69.176.39) by SC-EXCH02.marvell.com (10.93.176.82) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 22 Jul 2020 15:11:39 -0700 Received: from maili.marvell.com (10.69.176.80) by DC5-EXCH02.marvell.com (10.69.176.39) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Wed, 22 Jul 2020 15:11:39 -0700 Received: from NN-LT0049.marvell.com (NN-LT0049.marvell.com [10.193.54.6]) by maili.marvell.com (Postfix) with ESMTP id 63B853F7040; Wed, 22 Jul 2020 15:11:33 -0700 (PDT) From: Alexander Lobakin To: "David S. Miller" , Jakub Kicinski CC: Alexander Lobakin , Igor Russkikh , Michal Kalderon , "Ariel Elior" , Denis Bolotin , "Doug Ledford" , Jason Gunthorpe , "Alexei Starovoitov" , Daniel Borkmann , "Jesper Dangaard Brouer" , John Fastabend , Martin KaFai Lau , Song Liu , "Yonghong Song" , Andrii Nakryiko , KP Singh , , , , , Subject: [PATCH v2 net-next 05/15] qed: sanitize PBL chains allocation Date: Thu, 23 Jul 2020 01:10:35 +0300 Message-ID: <20200722221045.5436-6-alobakin@marvell.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200722221045.5436-1-alobakin@marvell.com> References: <20200722221045.5436-1-alobakin@marvell.com> MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.235,18.0.687 definitions=2020-07-22_16:2020-07-22,2020-07-22 signatures=0 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org PBL chain elements are actually DMA addresses stored in __le64, but currently their size is hardcoded to 8, and DMA addresses are assigned via cast to variable-sized dma_addr_t without any bitwise conversions. Change the type of pbl_virt array to match the actual one, add a new field to store the size of allocated DMA memory and sanitize elements assignment. Misc: give more logic names to the members of qed_chain::pbl_sp embedded struct. Signed-off-by: Alexander Lobakin Signed-off-by: Igor Russkikh Signed-off-by: Michal Kalderon --- drivers/net/ethernet/qlogic/qed/qed_chain.c | 21 +++++++++---------- .../net/ethernet/qlogic/qed/qed_sp_commands.c | 4 ++-- include/linux/qed/qed_chain.h | 16 +++++++------- 3 files changed, 20 insertions(+), 21 deletions(-) diff --git a/drivers/net/ethernet/qlogic/qed/qed_chain.c b/drivers/net/ethernet/qlogic/qed/qed_chain.c index 917b783433f7..a9ff15b9d8c0 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_chain.c +++ b/drivers/net/ethernet/qlogic/qed/qed_chain.c @@ -49,7 +49,7 @@ static void qed_chain_free_pbl(struct qed_dev *cdev, struct qed_chain *chain) { struct device *dev = &cdev->pdev->dev; struct addr_tbl_entry *entry; - u32 pbl_size, i; + u32 i; if (!chain->pbl.pp_addr_tbl) return; @@ -63,11 +63,10 @@ static void qed_chain_free_pbl(struct qed_dev *cdev, struct qed_chain *chain) entry->dma_map); } - pbl_size = chain->page_cnt * QED_CHAIN_PBL_ENTRY_SIZE; - if (!chain->b_external_pbl) - dma_free_coherent(dev, pbl_size, chain->pbl_sp.p_virt_table, - chain->pbl_sp.p_phys_table); + dma_free_coherent(dev, chain->pbl_sp.table_size, + chain->pbl_sp.table_virt, + chain->pbl_sp.table_phys); vfree(chain->pbl.pp_addr_tbl); chain->pbl.pp_addr_tbl = NULL; @@ -190,7 +189,7 @@ static int qed_chain_alloc_pbl(struct qed_dev *cdev, struct qed_chain *chain, struct device *dev = &cdev->pdev->dev; struct addr_tbl_entry *addr_tbl; dma_addr_t phys, pbl_phys; - void *pbl_virt; + __le64 *pbl_virt; u32 page_cnt, i; size_t size; void *virt; @@ -214,7 +213,7 @@ static int qed_chain_alloc_pbl(struct qed_dev *cdev, struct qed_chain *chain, chain->b_external_pbl = true; } else { - size = array_size(page_cnt, QED_CHAIN_PBL_ENTRY_SIZE); + size = array_size(page_cnt, sizeof(*pbl_virt)); if (unlikely(size == SIZE_MAX)) return -EOVERFLOW; @@ -225,8 +224,9 @@ static int qed_chain_alloc_pbl(struct qed_dev *cdev, struct qed_chain *chain, if (!pbl_virt) return -ENOMEM; - chain->pbl_sp.p_virt_table = pbl_virt; - chain->pbl_sp.p_phys_table = pbl_phys; + chain->pbl_sp.table_virt = pbl_virt; + chain->pbl_sp.table_phys = pbl_phys; + chain->pbl_sp.table_size = size; for (i = 0; i < page_cnt; i++) { virt = dma_alloc_coherent(dev, QED_CHAIN_PAGE_SIZE, &phys, @@ -240,8 +240,7 @@ static int qed_chain_alloc_pbl(struct qed_dev *cdev, struct qed_chain *chain, } /* Fill the PBL table with the physical address of the page */ - *(dma_addr_t *)pbl_virt = phys; - pbl_virt += QED_CHAIN_PBL_ENTRY_SIZE; + pbl_virt[i] = cpu_to_le64(phys); /* Keep the virtual address of the page */ addr_tbl[i].virt_addr = virt; diff --git a/drivers/net/ethernet/qlogic/qed/qed_sp_commands.c b/drivers/net/ethernet/qlogic/qed/qed_sp_commands.c index 8142f5669b26..aa71adcf31ee 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_sp_commands.c +++ b/drivers/net/ethernet/qlogic/qed/qed_sp_commands.c @@ -366,11 +366,11 @@ int qed_sp_pf_start(struct qed_hwfn *p_hwfn, /* Place EQ address in RAMROD */ DMA_REGPAIR_LE(p_ramrod->event_ring_pbl_addr, - p_hwfn->p_eq->chain.pbl_sp.p_phys_table); + qed_chain_get_pbl_phys(&p_hwfn->p_eq->chain)); page_cnt = (u8)qed_chain_get_page_cnt(&p_hwfn->p_eq->chain); p_ramrod->event_ring_num_pages = page_cnt; DMA_REGPAIR_LE(p_ramrod->consolid_q_pbl_addr, - p_hwfn->p_consq->chain.pbl_sp.p_phys_table); + qed_chain_get_pbl_phys(&p_hwfn->p_consq->chain)); qed_tunn_set_pf_start_params(p_hwfn, p_tunn, &p_ramrod->tunnel_config); diff --git a/include/linux/qed/qed_chain.h b/include/linux/qed/qed_chain.h index 087073517c09..265e0b671a5c 100644 --- a/include/linux/qed/qed_chain.h +++ b/include/linux/qed/qed_chain.h @@ -127,8 +127,9 @@ struct qed_chain { /* Base address of a pre-allocated buffer for pbl */ struct { - dma_addr_t p_phys_table; - void *p_virt_table; + __le64 *table_virt; + dma_addr_t table_phys; + size_t table_size; } pbl_sp; /* Address of first page of the chain - the address is required @@ -146,7 +147,6 @@ struct qed_chain { bool b_external_pbl; }; -#define QED_CHAIN_PBL_ENTRY_SIZE 8 #define QED_CHAIN_PAGE_SIZE 0x1000 #define ELEMS_PER_PAGE(elem_size) \ @@ -236,7 +236,7 @@ static inline u32 qed_chain_get_page_cnt(struct qed_chain *p_chain) static inline dma_addr_t qed_chain_get_pbl_phys(struct qed_chain *p_chain) { - return p_chain->pbl_sp.p_phys_table; + return p_chain->pbl_sp.table_phys; } /** @@ -527,8 +527,8 @@ static inline void qed_chain_init_params(struct qed_chain *p_chain, p_chain->capacity = p_chain->usable_per_page * page_cnt; p_chain->size = p_chain->elem_per_page * page_cnt; - p_chain->pbl_sp.p_phys_table = 0; - p_chain->pbl_sp.p_virt_table = NULL; + p_chain->pbl_sp.table_phys = 0; + p_chain->pbl_sp.table_virt = NULL; p_chain->pbl.pp_addr_tbl = NULL; } @@ -569,8 +569,8 @@ static inline void qed_chain_init_pbl_mem(struct qed_chain *p_chain, dma_addr_t p_phys_pbl, struct addr_tbl_entry *pp_addr_tbl) { - p_chain->pbl_sp.p_phys_table = p_phys_pbl; - p_chain->pbl_sp.p_virt_table = p_virt_pbl; + p_chain->pbl_sp.table_phys = p_phys_pbl; + p_chain->pbl_sp.table_virt = p_virt_pbl; p_chain->pbl.pp_addr_tbl = pp_addr_tbl; }