From patchwork Wed Sep 4 13:53:38 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paolo Abeni X-Patchwork-Id: 13790882 X-Patchwork-Delegate: kuba@kernel.org Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (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 361611D9357 for ; Wed, 4 Sep 2024 13:57:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725458242; cv=none; b=LnNHwfDM/d9NLiAAtUQmG+2FBZvWG8AHcMRfyiLxTbs7kSNYiYAqEakqNIuW65kpAYkgb47O7WgdzrAFxXn612OhmFXAGzzr0SHYywzocQwWuD/pCp2YlfSZ9cSi43jbmlAUG9IiVgzns03RZfaOsP5D8RS78sYmxAdvQNuUUu0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725458242; c=relaxed/simple; bh=atP9sngMqIF0w9U/fw6al8gA6pzyDa2I5hpWK3tcufY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=DYH5F8Yfr8dd7CbPaxbjmwc/XwhpIfnD+GaVduAhCpDKOOZVPejDyM9oKiyDB8ABujQfZvyTdRq9r6lLOH0xJl4DUIpEtr5RByzaQhm8q5OVCeO9IcsaUn+DSJIMiylSh5008nuakMdKBsVT/0kWJ0Nyx1klJBdsgv+oP5BL3BE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=J66VZFsU; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="J66VZFsU" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1725458240; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=/rDzmx9qvAFTo5DWPajpgBxxGC3BMj+Ow3FbdsiEZOE=; b=J66VZFsUSPmSIvC26JF01Get4a38fePZkQmUWSyg0NBqdG/ji8Ygp2adRtQ6e+zS5pkuz7 dQKWdye7VKQJPwSF4AtBjCbyVoqovBrxU1zV6mEaifE4kufckkYEchpRFhY5Rju9xUi5vI oBShpYyQau9z7byjfadNaOZ/vS4mCgc= Received: from mx-prod-mc-01.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-237-5iUOcPQ7P-iAxqGK2wZ5Gw-1; Wed, 04 Sep 2024 09:57:14 -0400 X-MC-Unique: 5iUOcPQ7P-iAxqGK2wZ5Gw-1 Received: from mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.15]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 84E2E19560B5; Wed, 4 Sep 2024 13:57:11 +0000 (UTC) Received: from gerbillo.redhat.com (unknown [10.45.225.58]) by mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id CE3901956086; Wed, 4 Sep 2024 13:57:06 +0000 (UTC) From: Paolo Abeni To: netdev@vger.kernel.org Cc: Jakub Kicinski , Jiri Pirko , Madhu Chittim , Sridhar Samudrala , Simon Horman , John Fastabend , Sunil Kovvuri Goutham , Jamal Hadi Salim , Donald Hunter , anthony.l.nguyen@intel.com, przemyslaw.kitszel@intel.com, intel-wired-lan@lists.osuosl.org, edumazet@google.com Subject: [PATCH v6 net-next 06/15] net-shapers: implement delete support for NODE scope shaper Date: Wed, 4 Sep 2024 15:53:38 +0200 Message-ID: <6ce5659240b0f0eb24c8afff4a0611659b089bed.1725457317.git.pabeni@redhat.com> In-Reply-To: References: Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.15 X-Patchwork-Delegate: kuba@kernel.org Leverage the previously introduced group operation to implement the removal of NODE scope shaper, re-linking its leaves under the the parent node before actually deleting the specified NODE scope shaper. Signed-off-by: Paolo Abeni --- v4 -> v5: - replace net_device* with binding* in most helpers --- net/shaper/shaper.c | 87 ++++++++++++++++++++++++++++++++++++++------- 1 file changed, 75 insertions(+), 12 deletions(-) diff --git a/net/shaper/shaper.c b/net/shaper/shaper.c index c409acbe768c..1255d532b36a 100644 --- a/net/shaper/shaper.c +++ b/net/shaper/shaper.c @@ -804,7 +804,8 @@ static int net_shaper_parent_from_leaves(int leaves_count, } static int __net_shaper_group(struct net_shaper_binding *binding, - int leaves_count, struct net_shaper *leaves, + bool update_node, int leaves_count, + struct net_shaper *leaves, struct net_shaper *node, struct netlink_ext_ack *extack) { @@ -848,12 +849,14 @@ static int __net_shaper_group(struct net_shaper_binding *binding, } } - /* For newly created node scope shaper, the following will update - * the handle, due to id allocation. - */ - ret = net_shaper_pre_insert(binding, &node->handle, extack); - if (ret) - return ret; + if (update_node) { + /* For newly created node scope shaper, the following will + * update the handle, due to id allocation. + */ + ret = net_shaper_pre_insert(binding, &node->handle, extack); + if (ret) + return ret; + } for (i = 0; i < leaves_count; ++i) { leaf_handle = leaves[i].handle; @@ -878,7 +881,8 @@ static int __net_shaper_group(struct net_shaper_binding *binding, if (parent) parent->leaves++; - net_shaper_commit(binding, 1, node); + if (update_node) + net_shaper_commit(binding, 1, node); net_shaper_commit(binding, leaves_count, leaves); return 0; @@ -887,6 +891,64 @@ static int __net_shaper_group(struct net_shaper_binding *binding, return ret; } +static int net_shaper_pre_del_node(struct net_shaper_binding *binding, + const struct net_shaper *shaper, + struct netlink_ext_ack *extack) +{ + struct net_shaper_hierarchy *hierarchy = net_shaper_hierarchy(binding); + struct net_shaper *cur, *leaves, node = {}; + int ret, leaves_count = 0; + unsigned long index; + bool update_node; + + if (!shaper->leaves) + return 0; + + /* Fetch the new node information. */ + node.handle = shaper->parent; + cur = net_shaper_lookup(binding, &node.handle); + if (cur) { + node = *cur; + } else { + /* A scope NODE shaper can be nested only to the NETDEV scope + * shaper without creating the latter, this check may fail only + * if the data is in inconsistent status. + */ + if (WARN_ON_ONCE(node.handle.scope != NET_SHAPER_SCOPE_NETDEV)) + return -EINVAL; + } + + leaves = kcalloc(shaper->leaves, sizeof(struct net_shaper), + GFP_KERNEL); + if (!leaves) + return -ENOMEM; + + /* Build the leaves arrays. */ + xa_for_each(&hierarchy->shapers, index, cur) { + if (net_shaper_handle_cmp(&cur->parent, &shaper->handle)) + continue; + + if (WARN_ON_ONCE(leaves_count == shaper->leaves)) { + ret = -EINVAL; + goto free; + } + + leaves[leaves_count++] = *cur; + } + + /* When re-linking to the netdev shaper, avoid the eventual, implicit, + * creation of the new node, would be surprising since the user is + * doing a delete operation. + */ + update_node = node.handle.scope != NET_SHAPER_SCOPE_NETDEV; + ret = __net_shaper_group(binding, update_node, leaves_count, + leaves, &node, extack); + +free: + kfree(leaves); + return ret; +} + static int net_shaper_delete(struct net_shaper_binding *binding, const struct net_shaper_handle *handle, struct netlink_ext_ack *extack) @@ -910,9 +972,9 @@ static int net_shaper_delete(struct net_shaper_binding *binding, } if (handle->scope == NET_SHAPER_SCOPE_NODE) { - /* TODO: implement support for scope NODE delete. */ - ret = -EINVAL; - goto unlock; + ret = net_shaper_pre_del_node(binding, shaper, extack); + if (ret) + goto unlock; } ret = __net_shaper_delete(binding, shaper, extack); @@ -977,7 +1039,8 @@ static int net_shaper_group(struct net_shaper_binding *binding, } } - ret = __net_shaper_group(binding, leaves_count, leaves, node, extack); + ret = __net_shaper_group(binding, true, leaves_count, leaves, node, + extack); /* Check if we need to delete any nde left alone by the new leaves * linkage.