From patchwork Fri Aug 25 08:53:17 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiri Pirko X-Patchwork-Id: 13365209 X-Patchwork-Delegate: kuba@kernel.org Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 54E51CA5F for ; Fri, 25 Aug 2023 08:53:49 +0000 (UTC) Received: from mail-wm1-x335.google.com (mail-wm1-x335.google.com [IPv6:2a00:1450:4864:20::335]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E1B521BFA for ; Fri, 25 Aug 2023 01:53:44 -0700 (PDT) Received: by mail-wm1-x335.google.com with SMTP id 5b1f17b1804b1-3ff006454fdso5903545e9.1 for ; Fri, 25 Aug 2023 01:53:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=resnulli-us.20221208.gappssmtp.com; s=20221208; t=1692953623; x=1693558423; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=IGwVZyjSdwMoylnGrRWpUD943PPa2R/RpuTBMlAD87g=; b=a0B1Eu4T7vKO/iey5hGoC7vK29rSj9cm+oL5FVc4DUp4c2n6OH3TMeKLWScppGObgz 3+91rdHqA830HarD+j+6gEKTDaahQaYbllKaJg3Go5EPzF5bn95LLJ3cjj1Hxdi8urqE 78f7HehMKbLUq75p8UYh5dgCAnWdwntxRmFCK2jcNSWkr2D/oIxgAa+u/rbdxYqD5/qg ZhkJZXfz+ZZr3kDM445lHG5Fv4/iQ75WtAg7c3rLPrd6IPDyn6PlX6+1sJtEOOVQ0m+y Wo6oFGjBsE+h5SzJUaoijcusKbMoq0uznp4GR+Q4nyySha+NdsCFtYFKIoA32bL7aPhb NLVw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1692953623; x=1693558423; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=IGwVZyjSdwMoylnGrRWpUD943PPa2R/RpuTBMlAD87g=; b=ecvtjjseaviI9FG49GHQ+UwBjx8N2wPG5FShIDUBapAs1za6Uhi963rcatV4nXQEQj XkfOu5ioYDODwNiKtxcmJaWiiMe590geGTE9ONQdjbmXsZiC8gsudDpMKwcc5lQa4ynH QGoAqrSjgExUNG1se/g4jzCUqc8Ecsj0bK4GX7Itm49ZRCYk4D/eHLnsVtTzxZHiMx9h CFs4q54muMM9948WKO8v/1H6Nqo9v0WMNtJ0l/xXv3daSDGZcRvQgU5MU5E7pfLeYwYg PW90pzrV3mUQvEwEk11rhhMyBwRPWfR60eZtrsf+4IuNJQUDT8qOAqM1SPWxyk30KsEu WrXg== X-Gm-Message-State: AOJu0YxNqfv9qSBF0hYqWmjk57iPwROTBDEHeLt45A3DqzgRNtvIkwBv I3POQjKJ97bCL/gjeMd17oWIO8+p1yrm4BIRzX6MdifU X-Google-Smtp-Source: AGHT+IFvkOfxYpXwaEPm3KmAr9G2FpeWKBIwpnJ2SUrBIlFmLBbLmyX5AyyA+zS+XwNCqK2XDk5iBA== X-Received: by 2002:a1c:7907:0:b0:400:ce4f:f184 with SMTP id l7-20020a1c7907000000b00400ce4ff184mr4222113wme.41.1692953623289; Fri, 25 Aug 2023 01:53:43 -0700 (PDT) Received: from localhost ([212.23.236.67]) by smtp.gmail.com with ESMTPSA id f23-20020a7bcd17000000b003feef82bbefsm1565573wmj.29.2023.08.25.01.53.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 25 Aug 2023 01:53:42 -0700 (PDT) From: Jiri Pirko To: netdev@vger.kernel.org Cc: kuba@kernel.org, pabeni@redhat.com, davem@davemloft.net, edumazet@google.com, moshe@nvidia.com Subject: [patch net-next 11/15] devlink: push rate related code into separate file Date: Fri, 25 Aug 2023 10:53:17 +0200 Message-ID: <20230825085321.178134-12-jiri@resnulli.us> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230825085321.178134-1-jiri@resnulli.us> References: <20230825085321.178134-1-jiri@resnulli.us> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,RCVD_IN_DNSWL_BLOCKED,SPF_HELO_NONE,SPF_NONE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net X-Patchwork-Delegate: kuba@kernel.org From: Jiri Pirko Cut out another chunk from leftover.c and put rate related code into a separate file. Signed-off-by: Jiri Pirko --- net/devlink/Makefile | 2 +- net/devlink/devl_internal.h | 5 + net/devlink/leftover.c | 718 ----------------------------------- net/devlink/rate.c | 722 ++++++++++++++++++++++++++++++++++++ 4 files changed, 728 insertions(+), 719 deletions(-) create mode 100644 net/devlink/rate.c diff --git a/net/devlink/Makefile b/net/devlink/Makefile index 523efffe522c..f61aa97688f5 100644 --- a/net/devlink/Makefile +++ b/net/devlink/Makefile @@ -1,4 +1,4 @@ # SPDX-License-Identifier: GPL-2.0 obj-y := leftover.o core.o netlink.o netlink_gen.o dev.o port.o sb.o dpipe.o \ - resource.o param.o region.o health.o trap.o + resource.o param.o region.o health.o trap.o rate.o diff --git a/net/devlink/devl_internal.h b/net/devlink/devl_internal.h index 148525aa2847..8b530f15c439 100644 --- a/net/devlink/devl_internal.h +++ b/net/devlink/devl_internal.h @@ -166,6 +166,8 @@ void devlink_trap_groups_notify_register(struct devlink *devlink); void devlink_trap_groups_notify_unregister(struct devlink *devlink); void devlink_traps_notify_register(struct devlink *devlink); void devlink_traps_notify_unregister(struct devlink *devlink); +void devlink_rates_notify_register(struct devlink *devlink); +void devlink_rates_notify_unregister(struct devlink *devlink); /* Ports */ #define ASSERT_DEVLINK_PORT_INITIALIZED(devlink_port) \ @@ -278,3 +280,6 @@ int devlink_nl_cmd_trap_group_set_doit(struct sk_buff *skb, struct genl_info *info); int devlink_nl_cmd_trap_policer_set_doit(struct sk_buff *skb, struct genl_info *info); +int devlink_nl_cmd_rate_set_doit(struct sk_buff *skb, struct genl_info *info); +int devlink_nl_cmd_rate_new_doit(struct sk_buff *skb, struct genl_info *info); +int devlink_nl_cmd_rate_del_doit(struct sk_buff *skb, struct genl_info *info); diff --git a/net/devlink/leftover.c b/net/devlink/leftover.c index 5b153ce097ab..13958c3da59a 100644 --- a/net/devlink/leftover.c +++ b/net/devlink/leftover.c @@ -37,80 +37,6 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwmsg); EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwerr); EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_trap_report); -static inline bool -devlink_rate_is_leaf(struct devlink_rate *devlink_rate) -{ - return devlink_rate->type == DEVLINK_RATE_TYPE_LEAF; -} - -static inline bool -devlink_rate_is_node(struct devlink_rate *devlink_rate) -{ - return devlink_rate->type == DEVLINK_RATE_TYPE_NODE; -} - -static struct devlink_rate * -devlink_rate_leaf_get_from_info(struct devlink *devlink, struct genl_info *info) -{ - struct devlink_rate *devlink_rate; - struct devlink_port *devlink_port; - - devlink_port = devlink_port_get_from_attrs(devlink, info->attrs); - if (IS_ERR(devlink_port)) - return ERR_CAST(devlink_port); - devlink_rate = devlink_port->devlink_rate; - return devlink_rate ?: ERR_PTR(-ENODEV); -} - -static struct devlink_rate * -devlink_rate_node_get_by_name(struct devlink *devlink, const char *node_name) -{ - static struct devlink_rate *devlink_rate; - - list_for_each_entry(devlink_rate, &devlink->rate_list, list) { - if (devlink_rate_is_node(devlink_rate) && - !strcmp(node_name, devlink_rate->name)) - return devlink_rate; - } - return ERR_PTR(-ENODEV); -} - -static struct devlink_rate * -devlink_rate_node_get_from_attrs(struct devlink *devlink, struct nlattr **attrs) -{ - const char *rate_node_name; - size_t len; - - if (!attrs[DEVLINK_ATTR_RATE_NODE_NAME]) - return ERR_PTR(-EINVAL); - rate_node_name = nla_data(attrs[DEVLINK_ATTR_RATE_NODE_NAME]); - len = strlen(rate_node_name); - /* Name cannot be empty or decimal number */ - if (!len || strspn(rate_node_name, "0123456789") == len) - return ERR_PTR(-EINVAL); - - return devlink_rate_node_get_by_name(devlink, rate_node_name); -} - -static struct devlink_rate * -devlink_rate_node_get_from_info(struct devlink *devlink, struct genl_info *info) -{ - return devlink_rate_node_get_from_attrs(devlink, info->attrs); -} - -static struct devlink_rate * -devlink_rate_get_from_info(struct devlink *devlink, struct genl_info *info) -{ - struct nlattr **attrs = info->attrs; - - if (attrs[DEVLINK_ATTR_PORT_INDEX]) - return devlink_rate_leaf_get_from_info(devlink, info); - else if (attrs[DEVLINK_ATTR_RATE_NODE_NAME]) - return devlink_rate_node_get_from_info(devlink, info); - else - return ERR_PTR(-EINVAL); -} - static struct devlink_linecard * devlink_linecard_get_by_index(struct devlink *devlink, unsigned int linecard_index) @@ -169,491 +95,6 @@ static int devlink_nl_put_nested_handle(struct sk_buff *msg, struct devlink *dev return -EMSGSIZE; } -static int devlink_nl_rate_fill(struct sk_buff *msg, - struct devlink_rate *devlink_rate, - enum devlink_command cmd, u32 portid, u32 seq, - int flags, struct netlink_ext_ack *extack) -{ - struct devlink *devlink = devlink_rate->devlink; - void *hdr; - - hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); - if (!hdr) - return -EMSGSIZE; - - if (devlink_nl_put_handle(msg, devlink)) - goto nla_put_failure; - - if (nla_put_u16(msg, DEVLINK_ATTR_RATE_TYPE, devlink_rate->type)) - goto nla_put_failure; - - if (devlink_rate_is_leaf(devlink_rate)) { - if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, - devlink_rate->devlink_port->index)) - goto nla_put_failure; - } else if (devlink_rate_is_node(devlink_rate)) { - if (nla_put_string(msg, DEVLINK_ATTR_RATE_NODE_NAME, - devlink_rate->name)) - goto nla_put_failure; - } - - if (nla_put_u64_64bit(msg, DEVLINK_ATTR_RATE_TX_SHARE, - devlink_rate->tx_share, DEVLINK_ATTR_PAD)) - goto nla_put_failure; - - if (nla_put_u64_64bit(msg, DEVLINK_ATTR_RATE_TX_MAX, - devlink_rate->tx_max, DEVLINK_ATTR_PAD)) - goto nla_put_failure; - - if (nla_put_u32(msg, DEVLINK_ATTR_RATE_TX_PRIORITY, - devlink_rate->tx_priority)) - goto nla_put_failure; - - if (nla_put_u32(msg, DEVLINK_ATTR_RATE_TX_WEIGHT, - devlink_rate->tx_weight)) - goto nla_put_failure; - - if (devlink_rate->parent) - if (nla_put_string(msg, DEVLINK_ATTR_RATE_PARENT_NODE_NAME, - devlink_rate->parent->name)) - goto nla_put_failure; - - genlmsg_end(msg, hdr); - return 0; - -nla_put_failure: - genlmsg_cancel(msg, hdr); - return -EMSGSIZE; -} - -static void devlink_rate_notify(struct devlink_rate *devlink_rate, - enum devlink_command cmd) -{ - struct devlink *devlink = devlink_rate->devlink; - struct sk_buff *msg; - int err; - - WARN_ON(cmd != DEVLINK_CMD_RATE_NEW && cmd != DEVLINK_CMD_RATE_DEL); - - if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED)) - return; - - msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); - if (!msg) - return; - - err = devlink_nl_rate_fill(msg, devlink_rate, cmd, 0, 0, 0, NULL); - if (err) { - nlmsg_free(msg); - return; - } - - genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), msg, - 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL); -} - -static void devlink_rates_notify_register(struct devlink *devlink) -{ - struct devlink_rate *rate_node; - - list_for_each_entry(rate_node, &devlink->rate_list, list) - devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_NEW); -} - -static void devlink_rates_notify_unregister(struct devlink *devlink) -{ - struct devlink_rate *rate_node; - - list_for_each_entry_reverse(rate_node, &devlink->rate_list, list) - devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_DEL); -} - -static int -devlink_nl_rate_get_dump_one(struct sk_buff *msg, struct devlink *devlink, - struct netlink_callback *cb, int flags) -{ - struct devlink_nl_dump_state *state = devlink_dump_state(cb); - struct devlink_rate *devlink_rate; - int idx = 0; - int err = 0; - - list_for_each_entry(devlink_rate, &devlink->rate_list, list) { - enum devlink_command cmd = DEVLINK_CMD_RATE_NEW; - u32 id = NETLINK_CB(cb->skb).portid; - - if (idx < state->idx) { - idx++; - continue; - } - err = devlink_nl_rate_fill(msg, devlink_rate, cmd, id, - cb->nlh->nlmsg_seq, flags, NULL); - if (err) { - state->idx = idx; - break; - } - idx++; - } - - return err; -} - -int devlink_nl_rate_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb) -{ - return devlink_nl_dumpit(skb, cb, devlink_nl_rate_get_dump_one); -} - -int devlink_nl_rate_get_doit(struct sk_buff *skb, struct genl_info *info) -{ - struct devlink *devlink = info->user_ptr[0]; - struct devlink_rate *devlink_rate; - struct sk_buff *msg; - int err; - - devlink_rate = devlink_rate_get_from_info(devlink, info); - if (IS_ERR(devlink_rate)) - return PTR_ERR(devlink_rate); - - msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); - if (!msg) - return -ENOMEM; - - err = devlink_nl_rate_fill(msg, devlink_rate, DEVLINK_CMD_RATE_NEW, - info->snd_portid, info->snd_seq, 0, - info->extack); - if (err) { - nlmsg_free(msg); - return err; - } - - return genlmsg_reply(msg, info); -} - -static bool -devlink_rate_is_parent_node(struct devlink_rate *devlink_rate, - struct devlink_rate *parent) -{ - while (parent) { - if (parent == devlink_rate) - return true; - parent = parent->parent; - } - return false; -} - -static int -devlink_nl_rate_parent_node_set(struct devlink_rate *devlink_rate, - struct genl_info *info, - struct nlattr *nla_parent) -{ - struct devlink *devlink = devlink_rate->devlink; - const char *parent_name = nla_data(nla_parent); - const struct devlink_ops *ops = devlink->ops; - size_t len = strlen(parent_name); - struct devlink_rate *parent; - int err = -EOPNOTSUPP; - - parent = devlink_rate->parent; - - if (parent && !len) { - if (devlink_rate_is_leaf(devlink_rate)) - err = ops->rate_leaf_parent_set(devlink_rate, NULL, - devlink_rate->priv, NULL, - info->extack); - else if (devlink_rate_is_node(devlink_rate)) - err = ops->rate_node_parent_set(devlink_rate, NULL, - devlink_rate->priv, NULL, - info->extack); - if (err) - return err; - - refcount_dec(&parent->refcnt); - devlink_rate->parent = NULL; - } else if (len) { - parent = devlink_rate_node_get_by_name(devlink, parent_name); - if (IS_ERR(parent)) - return -ENODEV; - - if (parent == devlink_rate) { - NL_SET_ERR_MSG(info->extack, "Parent to self is not allowed"); - return -EINVAL; - } - - if (devlink_rate_is_node(devlink_rate) && - devlink_rate_is_parent_node(devlink_rate, parent->parent)) { - NL_SET_ERR_MSG(info->extack, "Node is already a parent of parent node."); - return -EEXIST; - } - - if (devlink_rate_is_leaf(devlink_rate)) - err = ops->rate_leaf_parent_set(devlink_rate, parent, - devlink_rate->priv, parent->priv, - info->extack); - else if (devlink_rate_is_node(devlink_rate)) - err = ops->rate_node_parent_set(devlink_rate, parent, - devlink_rate->priv, parent->priv, - info->extack); - if (err) - return err; - - if (devlink_rate->parent) - /* we're reassigning to other parent in this case */ - refcount_dec(&devlink_rate->parent->refcnt); - - refcount_inc(&parent->refcnt); - devlink_rate->parent = parent; - } - - return 0; -} - -static int devlink_nl_rate_set(struct devlink_rate *devlink_rate, - const struct devlink_ops *ops, - struct genl_info *info) -{ - struct nlattr *nla_parent, **attrs = info->attrs; - int err = -EOPNOTSUPP; - u32 priority; - u32 weight; - u64 rate; - - if (attrs[DEVLINK_ATTR_RATE_TX_SHARE]) { - rate = nla_get_u64(attrs[DEVLINK_ATTR_RATE_TX_SHARE]); - if (devlink_rate_is_leaf(devlink_rate)) - err = ops->rate_leaf_tx_share_set(devlink_rate, devlink_rate->priv, - rate, info->extack); - else if (devlink_rate_is_node(devlink_rate)) - err = ops->rate_node_tx_share_set(devlink_rate, devlink_rate->priv, - rate, info->extack); - if (err) - return err; - devlink_rate->tx_share = rate; - } - - if (attrs[DEVLINK_ATTR_RATE_TX_MAX]) { - rate = nla_get_u64(attrs[DEVLINK_ATTR_RATE_TX_MAX]); - if (devlink_rate_is_leaf(devlink_rate)) - err = ops->rate_leaf_tx_max_set(devlink_rate, devlink_rate->priv, - rate, info->extack); - else if (devlink_rate_is_node(devlink_rate)) - err = ops->rate_node_tx_max_set(devlink_rate, devlink_rate->priv, - rate, info->extack); - if (err) - return err; - devlink_rate->tx_max = rate; - } - - if (attrs[DEVLINK_ATTR_RATE_TX_PRIORITY]) { - priority = nla_get_u32(attrs[DEVLINK_ATTR_RATE_TX_PRIORITY]); - if (devlink_rate_is_leaf(devlink_rate)) - err = ops->rate_leaf_tx_priority_set(devlink_rate, devlink_rate->priv, - priority, info->extack); - else if (devlink_rate_is_node(devlink_rate)) - err = ops->rate_node_tx_priority_set(devlink_rate, devlink_rate->priv, - priority, info->extack); - - if (err) - return err; - devlink_rate->tx_priority = priority; - } - - if (attrs[DEVLINK_ATTR_RATE_TX_WEIGHT]) { - weight = nla_get_u32(attrs[DEVLINK_ATTR_RATE_TX_WEIGHT]); - if (devlink_rate_is_leaf(devlink_rate)) - err = ops->rate_leaf_tx_weight_set(devlink_rate, devlink_rate->priv, - weight, info->extack); - else if (devlink_rate_is_node(devlink_rate)) - err = ops->rate_node_tx_weight_set(devlink_rate, devlink_rate->priv, - weight, info->extack); - - if (err) - return err; - devlink_rate->tx_weight = weight; - } - - nla_parent = attrs[DEVLINK_ATTR_RATE_PARENT_NODE_NAME]; - if (nla_parent) { - err = devlink_nl_rate_parent_node_set(devlink_rate, info, - nla_parent); - if (err) - return err; - } - - return 0; -} - -static bool devlink_rate_set_ops_supported(const struct devlink_ops *ops, - struct genl_info *info, - enum devlink_rate_type type) -{ - struct nlattr **attrs = info->attrs; - - if (type == DEVLINK_RATE_TYPE_LEAF) { - if (attrs[DEVLINK_ATTR_RATE_TX_SHARE] && !ops->rate_leaf_tx_share_set) { - NL_SET_ERR_MSG(info->extack, "TX share set isn't supported for the leafs"); - return false; - } - if (attrs[DEVLINK_ATTR_RATE_TX_MAX] && !ops->rate_leaf_tx_max_set) { - NL_SET_ERR_MSG(info->extack, "TX max set isn't supported for the leafs"); - return false; - } - if (attrs[DEVLINK_ATTR_RATE_PARENT_NODE_NAME] && - !ops->rate_leaf_parent_set) { - NL_SET_ERR_MSG(info->extack, "Parent set isn't supported for the leafs"); - return false; - } - if (attrs[DEVLINK_ATTR_RATE_TX_PRIORITY] && !ops->rate_leaf_tx_priority_set) { - NL_SET_ERR_MSG_ATTR(info->extack, - attrs[DEVLINK_ATTR_RATE_TX_PRIORITY], - "TX priority set isn't supported for the leafs"); - return false; - } - if (attrs[DEVLINK_ATTR_RATE_TX_WEIGHT] && !ops->rate_leaf_tx_weight_set) { - NL_SET_ERR_MSG_ATTR(info->extack, - attrs[DEVLINK_ATTR_RATE_TX_WEIGHT], - "TX weight set isn't supported for the leafs"); - return false; - } - } else if (type == DEVLINK_RATE_TYPE_NODE) { - if (attrs[DEVLINK_ATTR_RATE_TX_SHARE] && !ops->rate_node_tx_share_set) { - NL_SET_ERR_MSG(info->extack, "TX share set isn't supported for the nodes"); - return false; - } - if (attrs[DEVLINK_ATTR_RATE_TX_MAX] && !ops->rate_node_tx_max_set) { - NL_SET_ERR_MSG(info->extack, "TX max set isn't supported for the nodes"); - return false; - } - if (attrs[DEVLINK_ATTR_RATE_PARENT_NODE_NAME] && - !ops->rate_node_parent_set) { - NL_SET_ERR_MSG(info->extack, "Parent set isn't supported for the nodes"); - return false; - } - if (attrs[DEVLINK_ATTR_RATE_TX_PRIORITY] && !ops->rate_node_tx_priority_set) { - NL_SET_ERR_MSG_ATTR(info->extack, - attrs[DEVLINK_ATTR_RATE_TX_PRIORITY], - "TX priority set isn't supported for the nodes"); - return false; - } - if (attrs[DEVLINK_ATTR_RATE_TX_WEIGHT] && !ops->rate_node_tx_weight_set) { - NL_SET_ERR_MSG_ATTR(info->extack, - attrs[DEVLINK_ATTR_RATE_TX_WEIGHT], - "TX weight set isn't supported for the nodes"); - return false; - } - } else { - WARN(1, "Unknown type of rate object"); - return false; - } - - return true; -} - -static int devlink_nl_cmd_rate_set_doit(struct sk_buff *skb, - struct genl_info *info) -{ - struct devlink *devlink = info->user_ptr[0]; - struct devlink_rate *devlink_rate; - const struct devlink_ops *ops; - int err; - - devlink_rate = devlink_rate_get_from_info(devlink, info); - if (IS_ERR(devlink_rate)) - return PTR_ERR(devlink_rate); - - ops = devlink->ops; - if (!ops || !devlink_rate_set_ops_supported(ops, info, devlink_rate->type)) - return -EOPNOTSUPP; - - err = devlink_nl_rate_set(devlink_rate, ops, info); - - if (!err) - devlink_rate_notify(devlink_rate, DEVLINK_CMD_RATE_NEW); - return err; -} - -static int devlink_nl_cmd_rate_new_doit(struct sk_buff *skb, - struct genl_info *info) -{ - struct devlink *devlink = info->user_ptr[0]; - struct devlink_rate *rate_node; - const struct devlink_ops *ops; - int err; - - ops = devlink->ops; - if (!ops || !ops->rate_node_new || !ops->rate_node_del) { - NL_SET_ERR_MSG(info->extack, "Rate nodes aren't supported"); - return -EOPNOTSUPP; - } - - if (!devlink_rate_set_ops_supported(ops, info, DEVLINK_RATE_TYPE_NODE)) - return -EOPNOTSUPP; - - rate_node = devlink_rate_node_get_from_attrs(devlink, info->attrs); - if (!IS_ERR(rate_node)) - return -EEXIST; - else if (rate_node == ERR_PTR(-EINVAL)) - return -EINVAL; - - rate_node = kzalloc(sizeof(*rate_node), GFP_KERNEL); - if (!rate_node) - return -ENOMEM; - - rate_node->devlink = devlink; - rate_node->type = DEVLINK_RATE_TYPE_NODE; - rate_node->name = nla_strdup(info->attrs[DEVLINK_ATTR_RATE_NODE_NAME], GFP_KERNEL); - if (!rate_node->name) { - err = -ENOMEM; - goto err_strdup; - } - - err = ops->rate_node_new(rate_node, &rate_node->priv, info->extack); - if (err) - goto err_node_new; - - err = devlink_nl_rate_set(rate_node, ops, info); - if (err) - goto err_rate_set; - - refcount_set(&rate_node->refcnt, 1); - list_add(&rate_node->list, &devlink->rate_list); - devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_NEW); - return 0; - -err_rate_set: - ops->rate_node_del(rate_node, rate_node->priv, info->extack); -err_node_new: - kfree(rate_node->name); -err_strdup: - kfree(rate_node); - return err; -} - -static int devlink_nl_cmd_rate_del_doit(struct sk_buff *skb, - struct genl_info *info) -{ - struct devlink *devlink = info->user_ptr[0]; - struct devlink_rate *rate_node; - int err; - - rate_node = devlink_rate_node_get_from_info(devlink, info); - if (IS_ERR(rate_node)) - return PTR_ERR(rate_node); - - if (refcount_read(&rate_node->refcnt) > 1) { - NL_SET_ERR_MSG(info->extack, "Node has children. Cannot delete node."); - return -EBUSY; - } - - devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_DEL); - err = devlink->ops->rate_node_del(rate_node, rate_node->priv, - info->extack); - if (rate_node->parent) - refcount_dec(&rate_node->parent->refcnt); - list_del(&rate_node->list); - kfree(rate_node->name); - kfree(rate_node); - return err; -} - struct devlink_linecard_type { const char *type; const void *priv; @@ -986,19 +427,6 @@ static int devlink_nl_cmd_linecard_set_doit(struct sk_buff *skb, return 0; } -int devlink_rate_nodes_check(struct devlink *devlink, u16 mode, - struct netlink_ext_ack *extack) -{ - struct devlink_rate *devlink_rate; - - list_for_each_entry(devlink_rate, &devlink->rate_list, list) - if (devlink_rate_is_node(devlink_rate)) { - NL_SET_ERR_MSG(extack, "Rate node(s) exists."); - return -EBUSY; - } - return 0; -} - const struct genl_small_ops devlink_nl_small_ops[40] = { { .cmd = DEVLINK_CMD_PORT_SET, @@ -1276,152 +704,6 @@ void devlink_notify_unregister(struct devlink *devlink) devlink_notify(devlink, DEVLINK_CMD_DEL); } -/** - * devl_rate_node_create - create devlink rate node - * @devlink: devlink instance - * @priv: driver private data - * @node_name: name of the resulting node - * @parent: parent devlink_rate struct - * - * Create devlink rate object of type node - */ -struct devlink_rate * -devl_rate_node_create(struct devlink *devlink, void *priv, char *node_name, - struct devlink_rate *parent) -{ - struct devlink_rate *rate_node; - - rate_node = devlink_rate_node_get_by_name(devlink, node_name); - if (!IS_ERR(rate_node)) - return ERR_PTR(-EEXIST); - - rate_node = kzalloc(sizeof(*rate_node), GFP_KERNEL); - if (!rate_node) - return ERR_PTR(-ENOMEM); - - if (parent) { - rate_node->parent = parent; - refcount_inc(&rate_node->parent->refcnt); - } - - rate_node->type = DEVLINK_RATE_TYPE_NODE; - rate_node->devlink = devlink; - rate_node->priv = priv; - - rate_node->name = kstrdup(node_name, GFP_KERNEL); - if (!rate_node->name) { - kfree(rate_node); - return ERR_PTR(-ENOMEM); - } - - refcount_set(&rate_node->refcnt, 1); - list_add(&rate_node->list, &devlink->rate_list); - devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_NEW); - return rate_node; -} -EXPORT_SYMBOL_GPL(devl_rate_node_create); - -/** - * devl_rate_leaf_create - create devlink rate leaf - * @devlink_port: devlink port object to create rate object on - * @priv: driver private data - * @parent: parent devlink_rate struct - * - * Create devlink rate object of type leaf on provided @devlink_port. - */ -int devl_rate_leaf_create(struct devlink_port *devlink_port, void *priv, - struct devlink_rate *parent) -{ - struct devlink *devlink = devlink_port->devlink; - struct devlink_rate *devlink_rate; - - devl_assert_locked(devlink_port->devlink); - - if (WARN_ON(devlink_port->devlink_rate)) - return -EBUSY; - - devlink_rate = kzalloc(sizeof(*devlink_rate), GFP_KERNEL); - if (!devlink_rate) - return -ENOMEM; - - if (parent) { - devlink_rate->parent = parent; - refcount_inc(&devlink_rate->parent->refcnt); - } - - devlink_rate->type = DEVLINK_RATE_TYPE_LEAF; - devlink_rate->devlink = devlink; - devlink_rate->devlink_port = devlink_port; - devlink_rate->priv = priv; - list_add_tail(&devlink_rate->list, &devlink->rate_list); - devlink_port->devlink_rate = devlink_rate; - devlink_rate_notify(devlink_rate, DEVLINK_CMD_RATE_NEW); - - return 0; -} -EXPORT_SYMBOL_GPL(devl_rate_leaf_create); - -/** - * devl_rate_leaf_destroy - destroy devlink rate leaf - * - * @devlink_port: devlink port linked to the rate object - * - * Destroy the devlink rate object of type leaf on provided @devlink_port. - */ -void devl_rate_leaf_destroy(struct devlink_port *devlink_port) -{ - struct devlink_rate *devlink_rate = devlink_port->devlink_rate; - - devl_assert_locked(devlink_port->devlink); - if (!devlink_rate) - return; - - devlink_rate_notify(devlink_rate, DEVLINK_CMD_RATE_DEL); - if (devlink_rate->parent) - refcount_dec(&devlink_rate->parent->refcnt); - list_del(&devlink_rate->list); - devlink_port->devlink_rate = NULL; - kfree(devlink_rate); -} -EXPORT_SYMBOL_GPL(devl_rate_leaf_destroy); - -/** - * devl_rate_nodes_destroy - destroy all devlink rate nodes on device - * @devlink: devlink instance - * - * Unset parent for all rate objects and destroy all rate nodes - * on specified device. - */ -void devl_rate_nodes_destroy(struct devlink *devlink) -{ - static struct devlink_rate *devlink_rate, *tmp; - const struct devlink_ops *ops = devlink->ops; - - devl_assert_locked(devlink); - - list_for_each_entry(devlink_rate, &devlink->rate_list, list) { - if (!devlink_rate->parent) - continue; - - refcount_dec(&devlink_rate->parent->refcnt); - if (devlink_rate_is_leaf(devlink_rate)) - ops->rate_leaf_parent_set(devlink_rate, NULL, devlink_rate->priv, - NULL, NULL); - else if (devlink_rate_is_node(devlink_rate)) - ops->rate_node_parent_set(devlink_rate, NULL, devlink_rate->priv, - NULL, NULL); - } - list_for_each_entry_safe(devlink_rate, tmp, &devlink->rate_list, list) { - if (devlink_rate_is_node(devlink_rate)) { - ops->rate_node_del(devlink_rate, devlink_rate->priv, NULL); - list_del(&devlink_rate->list); - kfree(devlink_rate->name); - kfree(devlink_rate); - } - } -} -EXPORT_SYMBOL_GPL(devl_rate_nodes_destroy); - static int devlink_linecard_types_init(struct devlink_linecard *linecard) { struct devlink_linecard_type *linecard_type; diff --git a/net/devlink/rate.c b/net/devlink/rate.c new file mode 100644 index 000000000000..dff1593b8406 --- /dev/null +++ b/net/devlink/rate.c @@ -0,0 +1,722 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (c) 2016 Mellanox Technologies. All rights reserved. + * Copyright (c) 2016 Jiri Pirko + */ + +#include "devl_internal.h" + +static inline bool +devlink_rate_is_leaf(struct devlink_rate *devlink_rate) +{ + return devlink_rate->type == DEVLINK_RATE_TYPE_LEAF; +} + +static inline bool +devlink_rate_is_node(struct devlink_rate *devlink_rate) +{ + return devlink_rate->type == DEVLINK_RATE_TYPE_NODE; +} + +static struct devlink_rate * +devlink_rate_leaf_get_from_info(struct devlink *devlink, struct genl_info *info) +{ + struct devlink_rate *devlink_rate; + struct devlink_port *devlink_port; + + devlink_port = devlink_port_get_from_attrs(devlink, info->attrs); + if (IS_ERR(devlink_port)) + return ERR_CAST(devlink_port); + devlink_rate = devlink_port->devlink_rate; + return devlink_rate ?: ERR_PTR(-ENODEV); +} + +static struct devlink_rate * +devlink_rate_node_get_by_name(struct devlink *devlink, const char *node_name) +{ + static struct devlink_rate *devlink_rate; + + list_for_each_entry(devlink_rate, &devlink->rate_list, list) { + if (devlink_rate_is_node(devlink_rate) && + !strcmp(node_name, devlink_rate->name)) + return devlink_rate; + } + return ERR_PTR(-ENODEV); +} + +static struct devlink_rate * +devlink_rate_node_get_from_attrs(struct devlink *devlink, struct nlattr **attrs) +{ + const char *rate_node_name; + size_t len; + + if (!attrs[DEVLINK_ATTR_RATE_NODE_NAME]) + return ERR_PTR(-EINVAL); + rate_node_name = nla_data(attrs[DEVLINK_ATTR_RATE_NODE_NAME]); + len = strlen(rate_node_name); + /* Name cannot be empty or decimal number */ + if (!len || strspn(rate_node_name, "0123456789") == len) + return ERR_PTR(-EINVAL); + + return devlink_rate_node_get_by_name(devlink, rate_node_name); +} + +static struct devlink_rate * +devlink_rate_node_get_from_info(struct devlink *devlink, struct genl_info *info) +{ + return devlink_rate_node_get_from_attrs(devlink, info->attrs); +} + +static struct devlink_rate * +devlink_rate_get_from_info(struct devlink *devlink, struct genl_info *info) +{ + struct nlattr **attrs = info->attrs; + + if (attrs[DEVLINK_ATTR_PORT_INDEX]) + return devlink_rate_leaf_get_from_info(devlink, info); + else if (attrs[DEVLINK_ATTR_RATE_NODE_NAME]) + return devlink_rate_node_get_from_info(devlink, info); + else + return ERR_PTR(-EINVAL); +} + +static int devlink_nl_rate_fill(struct sk_buff *msg, + struct devlink_rate *devlink_rate, + enum devlink_command cmd, u32 portid, u32 seq, + int flags, struct netlink_ext_ack *extack) +{ + struct devlink *devlink = devlink_rate->devlink; + void *hdr; + + hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); + if (!hdr) + return -EMSGSIZE; + + if (devlink_nl_put_handle(msg, devlink)) + goto nla_put_failure; + + if (nla_put_u16(msg, DEVLINK_ATTR_RATE_TYPE, devlink_rate->type)) + goto nla_put_failure; + + if (devlink_rate_is_leaf(devlink_rate)) { + if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, + devlink_rate->devlink_port->index)) + goto nla_put_failure; + } else if (devlink_rate_is_node(devlink_rate)) { + if (nla_put_string(msg, DEVLINK_ATTR_RATE_NODE_NAME, + devlink_rate->name)) + goto nla_put_failure; + } + + if (nla_put_u64_64bit(msg, DEVLINK_ATTR_RATE_TX_SHARE, + devlink_rate->tx_share, DEVLINK_ATTR_PAD)) + goto nla_put_failure; + + if (nla_put_u64_64bit(msg, DEVLINK_ATTR_RATE_TX_MAX, + devlink_rate->tx_max, DEVLINK_ATTR_PAD)) + goto nla_put_failure; + + if (nla_put_u32(msg, DEVLINK_ATTR_RATE_TX_PRIORITY, + devlink_rate->tx_priority)) + goto nla_put_failure; + + if (nla_put_u32(msg, DEVLINK_ATTR_RATE_TX_WEIGHT, + devlink_rate->tx_weight)) + goto nla_put_failure; + + if (devlink_rate->parent) + if (nla_put_string(msg, DEVLINK_ATTR_RATE_PARENT_NODE_NAME, + devlink_rate->parent->name)) + goto nla_put_failure; + + genlmsg_end(msg, hdr); + return 0; + +nla_put_failure: + genlmsg_cancel(msg, hdr); + return -EMSGSIZE; +} + +static void devlink_rate_notify(struct devlink_rate *devlink_rate, + enum devlink_command cmd) +{ + struct devlink *devlink = devlink_rate->devlink; + struct sk_buff *msg; + int err; + + WARN_ON(cmd != DEVLINK_CMD_RATE_NEW && cmd != DEVLINK_CMD_RATE_DEL); + + if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED)) + return; + + msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); + if (!msg) + return; + + err = devlink_nl_rate_fill(msg, devlink_rate, cmd, 0, 0, 0, NULL); + if (err) { + nlmsg_free(msg); + return; + } + + genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), msg, + 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL); +} + +void devlink_rates_notify_register(struct devlink *devlink) +{ + struct devlink_rate *rate_node; + + list_for_each_entry(rate_node, &devlink->rate_list, list) + devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_NEW); +} + +void devlink_rates_notify_unregister(struct devlink *devlink) +{ + struct devlink_rate *rate_node; + + list_for_each_entry_reverse(rate_node, &devlink->rate_list, list) + devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_DEL); +} + +static int +devlink_nl_rate_get_dump_one(struct sk_buff *msg, struct devlink *devlink, + struct netlink_callback *cb, int flags) +{ + struct devlink_nl_dump_state *state = devlink_dump_state(cb); + struct devlink_rate *devlink_rate; + int idx = 0; + int err = 0; + + list_for_each_entry(devlink_rate, &devlink->rate_list, list) { + enum devlink_command cmd = DEVLINK_CMD_RATE_NEW; + u32 id = NETLINK_CB(cb->skb).portid; + + if (idx < state->idx) { + idx++; + continue; + } + err = devlink_nl_rate_fill(msg, devlink_rate, cmd, id, + cb->nlh->nlmsg_seq, flags, NULL); + if (err) { + state->idx = idx; + break; + } + idx++; + } + + return err; +} + +int devlink_nl_rate_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb) +{ + return devlink_nl_dumpit(skb, cb, devlink_nl_rate_get_dump_one); +} + +int devlink_nl_rate_get_doit(struct sk_buff *skb, struct genl_info *info) +{ + struct devlink *devlink = info->user_ptr[0]; + struct devlink_rate *devlink_rate; + struct sk_buff *msg; + int err; + + devlink_rate = devlink_rate_get_from_info(devlink, info); + if (IS_ERR(devlink_rate)) + return PTR_ERR(devlink_rate); + + msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); + if (!msg) + return -ENOMEM; + + err = devlink_nl_rate_fill(msg, devlink_rate, DEVLINK_CMD_RATE_NEW, + info->snd_portid, info->snd_seq, 0, + info->extack); + if (err) { + nlmsg_free(msg); + return err; + } + + return genlmsg_reply(msg, info); +} + +static bool +devlink_rate_is_parent_node(struct devlink_rate *devlink_rate, + struct devlink_rate *parent) +{ + while (parent) { + if (parent == devlink_rate) + return true; + parent = parent->parent; + } + return false; +} + +static int +devlink_nl_rate_parent_node_set(struct devlink_rate *devlink_rate, + struct genl_info *info, + struct nlattr *nla_parent) +{ + struct devlink *devlink = devlink_rate->devlink; + const char *parent_name = nla_data(nla_parent); + const struct devlink_ops *ops = devlink->ops; + size_t len = strlen(parent_name); + struct devlink_rate *parent; + int err = -EOPNOTSUPP; + + parent = devlink_rate->parent; + + if (parent && !len) { + if (devlink_rate_is_leaf(devlink_rate)) + err = ops->rate_leaf_parent_set(devlink_rate, NULL, + devlink_rate->priv, NULL, + info->extack); + else if (devlink_rate_is_node(devlink_rate)) + err = ops->rate_node_parent_set(devlink_rate, NULL, + devlink_rate->priv, NULL, + info->extack); + if (err) + return err; + + refcount_dec(&parent->refcnt); + devlink_rate->parent = NULL; + } else if (len) { + parent = devlink_rate_node_get_by_name(devlink, parent_name); + if (IS_ERR(parent)) + return -ENODEV; + + if (parent == devlink_rate) { + NL_SET_ERR_MSG(info->extack, "Parent to self is not allowed"); + return -EINVAL; + } + + if (devlink_rate_is_node(devlink_rate) && + devlink_rate_is_parent_node(devlink_rate, parent->parent)) { + NL_SET_ERR_MSG(info->extack, "Node is already a parent of parent node."); + return -EEXIST; + } + + if (devlink_rate_is_leaf(devlink_rate)) + err = ops->rate_leaf_parent_set(devlink_rate, parent, + devlink_rate->priv, parent->priv, + info->extack); + else if (devlink_rate_is_node(devlink_rate)) + err = ops->rate_node_parent_set(devlink_rate, parent, + devlink_rate->priv, parent->priv, + info->extack); + if (err) + return err; + + if (devlink_rate->parent) + /* we're reassigning to other parent in this case */ + refcount_dec(&devlink_rate->parent->refcnt); + + refcount_inc(&parent->refcnt); + devlink_rate->parent = parent; + } + + return 0; +} + +static int devlink_nl_rate_set(struct devlink_rate *devlink_rate, + const struct devlink_ops *ops, + struct genl_info *info) +{ + struct nlattr *nla_parent, **attrs = info->attrs; + int err = -EOPNOTSUPP; + u32 priority; + u32 weight; + u64 rate; + + if (attrs[DEVLINK_ATTR_RATE_TX_SHARE]) { + rate = nla_get_u64(attrs[DEVLINK_ATTR_RATE_TX_SHARE]); + if (devlink_rate_is_leaf(devlink_rate)) + err = ops->rate_leaf_tx_share_set(devlink_rate, devlink_rate->priv, + rate, info->extack); + else if (devlink_rate_is_node(devlink_rate)) + err = ops->rate_node_tx_share_set(devlink_rate, devlink_rate->priv, + rate, info->extack); + if (err) + return err; + devlink_rate->tx_share = rate; + } + + if (attrs[DEVLINK_ATTR_RATE_TX_MAX]) { + rate = nla_get_u64(attrs[DEVLINK_ATTR_RATE_TX_MAX]); + if (devlink_rate_is_leaf(devlink_rate)) + err = ops->rate_leaf_tx_max_set(devlink_rate, devlink_rate->priv, + rate, info->extack); + else if (devlink_rate_is_node(devlink_rate)) + err = ops->rate_node_tx_max_set(devlink_rate, devlink_rate->priv, + rate, info->extack); + if (err) + return err; + devlink_rate->tx_max = rate; + } + + if (attrs[DEVLINK_ATTR_RATE_TX_PRIORITY]) { + priority = nla_get_u32(attrs[DEVLINK_ATTR_RATE_TX_PRIORITY]); + if (devlink_rate_is_leaf(devlink_rate)) + err = ops->rate_leaf_tx_priority_set(devlink_rate, devlink_rate->priv, + priority, info->extack); + else if (devlink_rate_is_node(devlink_rate)) + err = ops->rate_node_tx_priority_set(devlink_rate, devlink_rate->priv, + priority, info->extack); + + if (err) + return err; + devlink_rate->tx_priority = priority; + } + + if (attrs[DEVLINK_ATTR_RATE_TX_WEIGHT]) { + weight = nla_get_u32(attrs[DEVLINK_ATTR_RATE_TX_WEIGHT]); + if (devlink_rate_is_leaf(devlink_rate)) + err = ops->rate_leaf_tx_weight_set(devlink_rate, devlink_rate->priv, + weight, info->extack); + else if (devlink_rate_is_node(devlink_rate)) + err = ops->rate_node_tx_weight_set(devlink_rate, devlink_rate->priv, + weight, info->extack); + + if (err) + return err; + devlink_rate->tx_weight = weight; + } + + nla_parent = attrs[DEVLINK_ATTR_RATE_PARENT_NODE_NAME]; + if (nla_parent) { + err = devlink_nl_rate_parent_node_set(devlink_rate, info, + nla_parent); + if (err) + return err; + } + + return 0; +} + +static bool devlink_rate_set_ops_supported(const struct devlink_ops *ops, + struct genl_info *info, + enum devlink_rate_type type) +{ + struct nlattr **attrs = info->attrs; + + if (type == DEVLINK_RATE_TYPE_LEAF) { + if (attrs[DEVLINK_ATTR_RATE_TX_SHARE] && !ops->rate_leaf_tx_share_set) { + NL_SET_ERR_MSG(info->extack, "TX share set isn't supported for the leafs"); + return false; + } + if (attrs[DEVLINK_ATTR_RATE_TX_MAX] && !ops->rate_leaf_tx_max_set) { + NL_SET_ERR_MSG(info->extack, "TX max set isn't supported for the leafs"); + return false; + } + if (attrs[DEVLINK_ATTR_RATE_PARENT_NODE_NAME] && + !ops->rate_leaf_parent_set) { + NL_SET_ERR_MSG(info->extack, "Parent set isn't supported for the leafs"); + return false; + } + if (attrs[DEVLINK_ATTR_RATE_TX_PRIORITY] && !ops->rate_leaf_tx_priority_set) { + NL_SET_ERR_MSG_ATTR(info->extack, + attrs[DEVLINK_ATTR_RATE_TX_PRIORITY], + "TX priority set isn't supported for the leafs"); + return false; + } + if (attrs[DEVLINK_ATTR_RATE_TX_WEIGHT] && !ops->rate_leaf_tx_weight_set) { + NL_SET_ERR_MSG_ATTR(info->extack, + attrs[DEVLINK_ATTR_RATE_TX_WEIGHT], + "TX weight set isn't supported for the leafs"); + return false; + } + } else if (type == DEVLINK_RATE_TYPE_NODE) { + if (attrs[DEVLINK_ATTR_RATE_TX_SHARE] && !ops->rate_node_tx_share_set) { + NL_SET_ERR_MSG(info->extack, "TX share set isn't supported for the nodes"); + return false; + } + if (attrs[DEVLINK_ATTR_RATE_TX_MAX] && !ops->rate_node_tx_max_set) { + NL_SET_ERR_MSG(info->extack, "TX max set isn't supported for the nodes"); + return false; + } + if (attrs[DEVLINK_ATTR_RATE_PARENT_NODE_NAME] && + !ops->rate_node_parent_set) { + NL_SET_ERR_MSG(info->extack, "Parent set isn't supported for the nodes"); + return false; + } + if (attrs[DEVLINK_ATTR_RATE_TX_PRIORITY] && !ops->rate_node_tx_priority_set) { + NL_SET_ERR_MSG_ATTR(info->extack, + attrs[DEVLINK_ATTR_RATE_TX_PRIORITY], + "TX priority set isn't supported for the nodes"); + return false; + } + if (attrs[DEVLINK_ATTR_RATE_TX_WEIGHT] && !ops->rate_node_tx_weight_set) { + NL_SET_ERR_MSG_ATTR(info->extack, + attrs[DEVLINK_ATTR_RATE_TX_WEIGHT], + "TX weight set isn't supported for the nodes"); + return false; + } + } else { + WARN(1, "Unknown type of rate object"); + return false; + } + + return true; +} + +int devlink_nl_cmd_rate_set_doit(struct sk_buff *skb, struct genl_info *info) +{ + struct devlink *devlink = info->user_ptr[0]; + struct devlink_rate *devlink_rate; + const struct devlink_ops *ops; + int err; + + devlink_rate = devlink_rate_get_from_info(devlink, info); + if (IS_ERR(devlink_rate)) + return PTR_ERR(devlink_rate); + + ops = devlink->ops; + if (!ops || !devlink_rate_set_ops_supported(ops, info, devlink_rate->type)) + return -EOPNOTSUPP; + + err = devlink_nl_rate_set(devlink_rate, ops, info); + + if (!err) + devlink_rate_notify(devlink_rate, DEVLINK_CMD_RATE_NEW); + return err; +} + +int devlink_nl_cmd_rate_new_doit(struct sk_buff *skb, struct genl_info *info) +{ + struct devlink *devlink = info->user_ptr[0]; + struct devlink_rate *rate_node; + const struct devlink_ops *ops; + int err; + + ops = devlink->ops; + if (!ops || !ops->rate_node_new || !ops->rate_node_del) { + NL_SET_ERR_MSG(info->extack, "Rate nodes aren't supported"); + return -EOPNOTSUPP; + } + + if (!devlink_rate_set_ops_supported(ops, info, DEVLINK_RATE_TYPE_NODE)) + return -EOPNOTSUPP; + + rate_node = devlink_rate_node_get_from_attrs(devlink, info->attrs); + if (!IS_ERR(rate_node)) + return -EEXIST; + else if (rate_node == ERR_PTR(-EINVAL)) + return -EINVAL; + + rate_node = kzalloc(sizeof(*rate_node), GFP_KERNEL); + if (!rate_node) + return -ENOMEM; + + rate_node->devlink = devlink; + rate_node->type = DEVLINK_RATE_TYPE_NODE; + rate_node->name = nla_strdup(info->attrs[DEVLINK_ATTR_RATE_NODE_NAME], GFP_KERNEL); + if (!rate_node->name) { + err = -ENOMEM; + goto err_strdup; + } + + err = ops->rate_node_new(rate_node, &rate_node->priv, info->extack); + if (err) + goto err_node_new; + + err = devlink_nl_rate_set(rate_node, ops, info); + if (err) + goto err_rate_set; + + refcount_set(&rate_node->refcnt, 1); + list_add(&rate_node->list, &devlink->rate_list); + devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_NEW); + return 0; + +err_rate_set: + ops->rate_node_del(rate_node, rate_node->priv, info->extack); +err_node_new: + kfree(rate_node->name); +err_strdup: + kfree(rate_node); + return err; +} + +int devlink_nl_cmd_rate_del_doit(struct sk_buff *skb, struct genl_info *info) +{ + struct devlink *devlink = info->user_ptr[0]; + struct devlink_rate *rate_node; + int err; + + rate_node = devlink_rate_node_get_from_info(devlink, info); + if (IS_ERR(rate_node)) + return PTR_ERR(rate_node); + + if (refcount_read(&rate_node->refcnt) > 1) { + NL_SET_ERR_MSG(info->extack, "Node has children. Cannot delete node."); + return -EBUSY; + } + + devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_DEL); + err = devlink->ops->rate_node_del(rate_node, rate_node->priv, + info->extack); + if (rate_node->parent) + refcount_dec(&rate_node->parent->refcnt); + list_del(&rate_node->list); + kfree(rate_node->name); + kfree(rate_node); + return err; +} + +int devlink_rate_nodes_check(struct devlink *devlink, u16 mode, + struct netlink_ext_ack *extack) +{ + struct devlink_rate *devlink_rate; + + list_for_each_entry(devlink_rate, &devlink->rate_list, list) + if (devlink_rate_is_node(devlink_rate)) { + NL_SET_ERR_MSG(extack, "Rate node(s) exists."); + return -EBUSY; + } + return 0; +} + +/** + * devl_rate_node_create - create devlink rate node + * @devlink: devlink instance + * @priv: driver private data + * @node_name: name of the resulting node + * @parent: parent devlink_rate struct + * + * Create devlink rate object of type node + */ +struct devlink_rate * +devl_rate_node_create(struct devlink *devlink, void *priv, char *node_name, + struct devlink_rate *parent) +{ + struct devlink_rate *rate_node; + + rate_node = devlink_rate_node_get_by_name(devlink, node_name); + if (!IS_ERR(rate_node)) + return ERR_PTR(-EEXIST); + + rate_node = kzalloc(sizeof(*rate_node), GFP_KERNEL); + if (!rate_node) + return ERR_PTR(-ENOMEM); + + if (parent) { + rate_node->parent = parent; + refcount_inc(&rate_node->parent->refcnt); + } + + rate_node->type = DEVLINK_RATE_TYPE_NODE; + rate_node->devlink = devlink; + rate_node->priv = priv; + + rate_node->name = kstrdup(node_name, GFP_KERNEL); + if (!rate_node->name) { + kfree(rate_node); + return ERR_PTR(-ENOMEM); + } + + refcount_set(&rate_node->refcnt, 1); + list_add(&rate_node->list, &devlink->rate_list); + devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_NEW); + return rate_node; +} +EXPORT_SYMBOL_GPL(devl_rate_node_create); + +/** + * devl_rate_leaf_create - create devlink rate leaf + * @devlink_port: devlink port object to create rate object on + * @priv: driver private data + * @parent: parent devlink_rate struct + * + * Create devlink rate object of type leaf on provided @devlink_port. + */ +int devl_rate_leaf_create(struct devlink_port *devlink_port, void *priv, + struct devlink_rate *parent) +{ + struct devlink *devlink = devlink_port->devlink; + struct devlink_rate *devlink_rate; + + devl_assert_locked(devlink_port->devlink); + + if (WARN_ON(devlink_port->devlink_rate)) + return -EBUSY; + + devlink_rate = kzalloc(sizeof(*devlink_rate), GFP_KERNEL); + if (!devlink_rate) + return -ENOMEM; + + if (parent) { + devlink_rate->parent = parent; + refcount_inc(&devlink_rate->parent->refcnt); + } + + devlink_rate->type = DEVLINK_RATE_TYPE_LEAF; + devlink_rate->devlink = devlink; + devlink_rate->devlink_port = devlink_port; + devlink_rate->priv = priv; + list_add_tail(&devlink_rate->list, &devlink->rate_list); + devlink_port->devlink_rate = devlink_rate; + devlink_rate_notify(devlink_rate, DEVLINK_CMD_RATE_NEW); + + return 0; +} +EXPORT_SYMBOL_GPL(devl_rate_leaf_create); + +/** + * devl_rate_leaf_destroy - destroy devlink rate leaf + * + * @devlink_port: devlink port linked to the rate object + * + * Destroy the devlink rate object of type leaf on provided @devlink_port. + */ +void devl_rate_leaf_destroy(struct devlink_port *devlink_port) +{ + struct devlink_rate *devlink_rate = devlink_port->devlink_rate; + + devl_assert_locked(devlink_port->devlink); + if (!devlink_rate) + return; + + devlink_rate_notify(devlink_rate, DEVLINK_CMD_RATE_DEL); + if (devlink_rate->parent) + refcount_dec(&devlink_rate->parent->refcnt); + list_del(&devlink_rate->list); + devlink_port->devlink_rate = NULL; + kfree(devlink_rate); +} +EXPORT_SYMBOL_GPL(devl_rate_leaf_destroy); + +/** + * devl_rate_nodes_destroy - destroy all devlink rate nodes on device + * @devlink: devlink instance + * + * Unset parent for all rate objects and destroy all rate nodes + * on specified device. + */ +void devl_rate_nodes_destroy(struct devlink *devlink) +{ + static struct devlink_rate *devlink_rate, *tmp; + const struct devlink_ops *ops = devlink->ops; + + devl_assert_locked(devlink); + + list_for_each_entry(devlink_rate, &devlink->rate_list, list) { + if (!devlink_rate->parent) + continue; + + refcount_dec(&devlink_rate->parent->refcnt); + if (devlink_rate_is_leaf(devlink_rate)) + ops->rate_leaf_parent_set(devlink_rate, NULL, devlink_rate->priv, + NULL, NULL); + else if (devlink_rate_is_node(devlink_rate)) + ops->rate_node_parent_set(devlink_rate, NULL, devlink_rate->priv, + NULL, NULL); + } + list_for_each_entry_safe(devlink_rate, tmp, &devlink->rate_list, list) { + if (devlink_rate_is_node(devlink_rate)) { + ops->rate_node_del(devlink_rate, devlink_rate->priv, NULL); + list_del(&devlink_rate->list); + kfree(devlink_rate->name); + kfree(devlink_rate); + } + } +} +EXPORT_SYMBOL_GPL(devl_rate_nodes_destroy);