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Tue, 17 Aug 2021 17:05:27 +0000 Received: from HQMAIL109.nvidia.com (172.20.187.15) by HQMAIL111.nvidia.com (172.20.187.18) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 17 Aug 2021 17:05:27 +0000 Received: from vdi.nvidia.com (172.20.187.6) by mail.nvidia.com (172.20.187.15) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Tue, 17 Aug 2021 10:05:25 -0700 From: Eli Cohen To: , CC: , , Jiri Pirko Subject: [PATCHv2 net-next 1/2] net/core: Remove unused field from struct flow_indr_dev Date: Tue, 17 Aug 2021 20:05:17 +0300 Message-ID: <20210817170518.378686-2-elic@nvidia.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210817170518.378686-1-elic@nvidia.com> References: <20210817170518.378686-1-elic@nvidia.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: c4ed0204-4bfc-4fcb-d890-08d961a13607 X-MS-TrafficTypeDiagnostic: BN8PR12MB3492: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:291; 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X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 17 Aug 2021 17:05:27.2679 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: c4ed0204-4bfc-4fcb-d890-08d961a13607 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.112.35];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: DM6NAM11FT048.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN8PR12MB3492 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org rcu field is not used. Remove it. Reviewed-by: Jiri Pirko Signed-off-by: Eli Cohen --- net/core/flow_offload.c | 1 - 1 file changed, 1 deletion(-) diff --git a/net/core/flow_offload.c b/net/core/flow_offload.c index 715b67f6c62f..1da83997e86a 100644 --- a/net/core/flow_offload.c +++ b/net/core/flow_offload.c @@ -327,7 +327,6 @@ struct flow_indr_dev { flow_indr_block_bind_cb_t *cb; void *cb_priv; refcount_t refcnt; - struct rcu_head rcu; }; static struct flow_indr_dev *flow_indr_dev_alloc(flow_indr_block_bind_cb_t *cb, From patchwork Tue Aug 17 17:05:18 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eli Cohen X-Patchwork-Id: 12441777 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 X-Spam-Level: X-Spam-Status: No, score=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,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 F01F7C432BE for ; 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vger.kernel.org; dkim=none (message not signed) header.d=none;vger.kernel.org; dmarc=pass action=none header.from=nvidia.com; Received-SPF: Pass (protection.outlook.com: domain of nvidia.com designates 216.228.112.34 as permitted sender) receiver=protection.outlook.com; client-ip=216.228.112.34; helo=mail.nvidia.com; Received: from mail.nvidia.com (216.228.112.34) by DM6NAM11FT067.mail.protection.outlook.com (10.13.172.76) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.20.4415.16 via Frontend Transport; Tue, 17 Aug 2021 17:05:28 +0000 Received: from HQMAIL109.nvidia.com (172.20.187.15) by HQMAIL107.nvidia.com (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 17 Aug 2021 17:05:28 +0000 Received: from vdi.nvidia.com (172.20.187.6) by mail.nvidia.com (172.20.187.15) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Tue, 17 Aug 2021 10:05:26 -0700 From: Eli Cohen To: , CC: , , Jiri Pirko Subject: [PATCHv2 net-next 2/2] net: Fix offloading indirect devices dependency on qdisc order creation Date: Tue, 17 Aug 2021 20:05:18 +0300 Message-ID: <20210817170518.378686-3-elic@nvidia.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210817170518.378686-1-elic@nvidia.com> References: <20210817170518.378686-1-elic@nvidia.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 0555fc74-5cd8-4517-0256-08d961a136fb X-MS-TrafficTypeDiagnostic: BYAPR12MB3238: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:5797; 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X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 17 Aug 2021 17:05:28.8545 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 0555fc74-5cd8-4517-0256-08d961a136fb X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.112.34];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: DM6NAM11FT067.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR12MB3238 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org Currently, when creating an ingress qdisc on an indirect device before the driver registered for callbacks, the driver will not have a chance to register its filter configuration callbacks. To fix that, modify the code such that it keeps track of all the ingress qdiscs that call flow_indr_dev_setup_offload(). When a driver calls flow_indr_dev_register(), go through the list of tracked ingress qdiscs and call the driver callback entry point so as to give it a chance to register its callback. Reviewed-by: Jiri Pirko Signed-off-by: Eli Cohen --- v1 -> v2: Fix warning - variable set but not used include/net/flow_offload.h | 1 + net/core/flow_offload.c | 89 ++++++++++++++++++++++++++- net/netfilter/nf_flow_table_offload.c | 1 + net/netfilter/nf_tables_offload.c | 1 + net/sched/cls_api.c | 1 + 5 files changed, 92 insertions(+), 1 deletion(-) diff --git a/include/net/flow_offload.h b/include/net/flow_offload.h index f3c2841566a0..5aa27acdb0b3 100644 --- a/include/net/flow_offload.h +++ b/include/net/flow_offload.h @@ -453,6 +453,7 @@ struct flow_block_offload { struct list_head *driver_block_list; struct netlink_ext_ack *extack; struct Qdisc *sch; + struct list_head *cb_list_head; }; enum tc_setup_type; diff --git a/net/core/flow_offload.c b/net/core/flow_offload.c index 1da83997e86a..6beaea13564a 100644 --- a/net/core/flow_offload.c +++ b/net/core/flow_offload.c @@ -321,6 +321,7 @@ EXPORT_SYMBOL(flow_block_cb_setup_simple); static DEFINE_MUTEX(flow_indr_block_lock); static LIST_HEAD(flow_block_indr_list); static LIST_HEAD(flow_block_indr_dev_list); +static LIST_HEAD(flow_indir_dev_list); struct flow_indr_dev { struct list_head list; @@ -345,6 +346,33 @@ static struct flow_indr_dev *flow_indr_dev_alloc(flow_indr_block_bind_cb_t *cb, return indr_dev; } +struct flow_indir_dev_info { + void *data; + struct net_device *dev; + struct Qdisc *sch; + enum tc_setup_type type; + void (*cleanup)(struct flow_block_cb *block_cb); + struct list_head list; + enum flow_block_command command; + enum flow_block_binder_type binder_type; + struct list_head *cb_list; +}; + +static void existing_qdiscs_register(flow_indr_block_bind_cb_t *cb, void *cb_priv) +{ + struct flow_block_offload bo; + struct flow_indir_dev_info *cur; + + list_for_each_entry(cur, &flow_indir_dev_list, list) { + memset(&bo, 0, sizeof(bo)); + bo.command = cur->command; + bo.binder_type = cur->binder_type; + INIT_LIST_HEAD(&bo.cb_list); + cb(cur->dev, cur->sch, cb_priv, cur->type, &bo, cur->data, cur->cleanup); + list_splice(&bo.cb_list, cur->cb_list); + } +} + int flow_indr_dev_register(flow_indr_block_bind_cb_t *cb, void *cb_priv) { struct flow_indr_dev *indr_dev; @@ -366,6 +394,7 @@ int flow_indr_dev_register(flow_indr_block_bind_cb_t *cb, void *cb_priv) } list_add(&indr_dev->list, &flow_block_indr_dev_list); + existing_qdiscs_register(cb, cb_priv); mutex_unlock(&flow_indr_block_lock); return 0; @@ -462,7 +491,59 @@ struct flow_block_cb *flow_indr_block_cb_alloc(flow_setup_cb_t *cb, } EXPORT_SYMBOL(flow_indr_block_cb_alloc); -int flow_indr_dev_setup_offload(struct net_device *dev, struct Qdisc *sch, +static struct flow_indir_dev_info *find_indir_dev(void *data) +{ + struct flow_indir_dev_info *cur; + + list_for_each_entry(cur, &flow_indir_dev_list, list) { + if (cur->data == data) + return cur; + } + return NULL; +} + +static int indir_dev_add(void *data, struct net_device *dev, struct Qdisc *sch, + enum tc_setup_type type, void (*cleanup)(struct flow_block_cb *block_cb), + struct flow_block_offload *bo) +{ + struct flow_indir_dev_info *info; + + info = find_indir_dev(data); + if (info) + return -EEXIST; + + info = kzalloc(sizeof(*info), GFP_KERNEL); + if (!info) + return -ENOMEM; + + info->data = data; + info->dev = dev; + info->sch = sch; + info->type = type; + info->cleanup = cleanup; + info->command = bo->command; + info->binder_type = bo->binder_type; + info->cb_list = bo->cb_list_head; + + list_add(&info->list, &flow_indir_dev_list); + return 0; +} + +static int indir_dev_remove(void *data) +{ + struct flow_indir_dev_info *info; + + info = find_indir_dev(data); + if (!info) + return -ENOENT; + + list_del(&info->list); + + kfree(info); + return 0; +} + +int flow_indr_dev_setup_offload(struct net_device *dev, struct Qdisc *sch, enum tc_setup_type type, void *data, struct flow_block_offload *bo, void (*cleanup)(struct flow_block_cb *block_cb)) @@ -470,6 +551,12 @@ int flow_indr_dev_setup_offload(struct net_device *dev, struct Qdisc *sch, struct flow_indr_dev *this; mutex_lock(&flow_indr_block_lock); + + if (bo->command == FLOW_BLOCK_BIND) + indir_dev_add(data, dev, sch, type, cleanup, bo); + else if (bo->command == FLOW_BLOCK_UNBIND) + indir_dev_remove(data); + list_for_each_entry(this, &flow_block_indr_dev_list, list) this->cb(dev, sch, this->cb_priv, type, bo, data, cleanup); diff --git a/net/netfilter/nf_flow_table_offload.c b/net/netfilter/nf_flow_table_offload.c index f92006cec94c..cbd9f59098b7 100644 --- a/net/netfilter/nf_flow_table_offload.c +++ b/net/netfilter/nf_flow_table_offload.c @@ -1097,6 +1097,7 @@ static void nf_flow_table_block_offload_init(struct flow_block_offload *bo, bo->command = cmd; bo->binder_type = FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS; bo->extack = extack; + bo->cb_list_head = &flowtable->flow_block.cb_list; INIT_LIST_HEAD(&bo->cb_list); } diff --git a/net/netfilter/nf_tables_offload.c b/net/netfilter/nf_tables_offload.c index b58d73a96523..9656c1646222 100644 --- a/net/netfilter/nf_tables_offload.c +++ b/net/netfilter/nf_tables_offload.c @@ -353,6 +353,7 @@ static void nft_flow_block_offload_init(struct flow_block_offload *bo, bo->command = cmd; bo->binder_type = FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS; bo->extack = extack; + bo->cb_list_head = &basechain->flow_block.cb_list; INIT_LIST_HEAD(&bo->cb_list); } diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c index e3e79e9bd706..9b276d14be4c 100644 --- a/net/sched/cls_api.c +++ b/net/sched/cls_api.c @@ -634,6 +634,7 @@ static void tcf_block_offload_init(struct flow_block_offload *bo, bo->block_shared = shared; bo->extack = extack; bo->sch = sch; + bo->cb_list_head = &flow_block->cb_list; INIT_LIST_HEAD(&bo->cb_list); }