From nobody Thu Nov 28 18:32:03 2024 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (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 BBCB41A2C35 for ; Mon, 30 Sep 2024 20:14:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727727265; cv=none; b=NFSx06tT3dUiS+DDzILLDByzR+iIubV3PsLHtWbWpfKn2paBbWw1v+sw3hAfjYqfk4L4hCiwbqHoX+ptY9rrFq9StWrRljBwrOxi99x9yGD+2wI53h4M4u469hlfVADZ/y8H9zZSEKTMl6LU5PtItDTLIj4vaA00uEQYnyoGNIo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727727265; c=relaxed/simple; bh=yyYkU1ftial3IHB+h4Bmg6vRVbYC0AGupABRCZ1Be54=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=srEa48M8/JCKK5CPCZn95ObK+H3xD0AiwPxcrUbV+z56rYMNGHc+9R/7wKmDK7oaTwq41ZImMoOOLvdPsG6EI9cItrAkJ2mhnlNIjoubOAH3G17+tlzQBOfsGZ1ntctE+Yr0c3L4N8OprbEKDzryHdDKr3qNh8W2aBQIFDpZjbU= 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=YAhp+R7D; arc=none smtp.client-ip=170.10.133.124 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="YAhp+R7D" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1727727262; 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=Y7rP0orM8QjhHGTk8aHIfF2wBCeC8AcAEDsdCZCHuMQ=; b=YAhp+R7Dien7K84IE0N1ZxPlptfKjNQkG4iADgD3fpqabPN5LK9UKKEhdgaE1ZJcuIwSOO EI/6zEls6qmBHh62au+fGtkut5xkQP+Xm6v7NLjdCz578Ro9VgeC/LF+CyQAP9mwaWsFo4 YnNZscEw9Xl+9j5wJLS86kWqaHDaNAo= Received: from mx-prod-mc-04.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-44-RBsRsetrNXOiR1nu9iuhdQ-1; Mon, 30 Sep 2024 16:14:18 -0400 X-MC-Unique: RBsRsetrNXOiR1nu9iuhdQ-1 Received: from mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (unknown [10.30.177.17]) (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-04.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 685E1196A408; Mon, 30 Sep 2024 20:14:16 +0000 (UTC) Received: from fs-i40c-03.mgmt.fast.eng.rdu2.dc.redhat.com (unknown [10.6.24.150]) by mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 04C4A1955DC7; Mon, 30 Sep 2024 20:14:13 +0000 (UTC) From: Alexander Aring To: teigland@redhat.com Cc: gfs2@lists.linux.dev, song@kernel.org, yukuai3@huawei.com, agruenba@redhat.com, mark@fasheh.com, jlbec@evilplan.org, joseph.qi@linux.alibaba.com, gregkh@linuxfoundation.org, rafael@kernel.org, akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-raid@vger.kernel.org, ocfs2-devel@lists.linux.dev, netdev@vger.kernel.org, vvidic@valentin-vidic.from.hr, heming.zhao@suse.com, lucien.xin@gmail.com, donald.hunter@gmail.com, aahringo@redhat.com Subject: [PATCHv2 dlm/next 04/12] dlm: handle port as __be16 network byte order Date: Mon, 30 Sep 2024 16:13:50 -0400 Message-ID: <20240930201358.2638665-5-aahringo@redhat.com> In-Reply-To: <20240930201358.2638665-1-aahringo@redhat.com> References: <20240930201358.2638665-1-aahringo@redhat.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.17 Content-Type: text/plain; charset="utf-8" This patch handles the DLM listen port setting internally as byte order as it is a value that is used as network byte on the wire. The user space still sets this value as host byte order for configfs as we don't break UAPI here. Signed-off-by: Alexander Aring --- fs/dlm/config.c | 55 +++++++++++++++++++++++++++++++++++------------ fs/dlm/config.h | 2 +- fs/dlm/lowcomms.c | 8 +++---- 3 files changed, 46 insertions(+), 19 deletions(-) diff --git a/fs/dlm/config.c b/fs/dlm/config.c index 1b213b5beb19..77a86c180d0e 100644 --- a/fs/dlm/config.c +++ b/fs/dlm/config.c @@ -73,7 +73,7 @@ const struct rhashtable_params dlm_rhash_rsb_params =3D { =20 struct dlm_cluster { struct config_group group; - unsigned int cl_tcp_port; + __be16 cl_tcp_port; unsigned int cl_buffer_size; unsigned int cl_rsbtbl_size; unsigned int cl_recover_timer; @@ -132,6 +132,45 @@ static ssize_t cluster_cluster_name_store(struct confi= g_item *item, =20 CONFIGFS_ATTR(cluster_, cluster_name); =20 +static ssize_t cluster_tcp_port_show(struct config_item *item, char *buf) +{ + return sprintf(buf, "%u\n", be16_to_cpu(dlm_config.ci_tcp_port)); +} + +static int dlm_check_zero_and_dlm_running(unsigned int x) +{ + if (!x) + return -EINVAL; + + if (dlm_lowcomms_is_running()) + return -EBUSY; + + return 0; +} + +static ssize_t cluster_tcp_port_store(struct config_item *item, + const char *buf, size_t len) +{ + int rc; + u16 x; + + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + + rc =3D kstrtou16(buf, 0, &x); + if (rc) + return rc; + + rc =3D dlm_check_zero_and_dlm_running(x); + if (rc) + return rc; + + dlm_config.ci_tcp_port =3D cpu_to_be16(x); + return len; +} + +CONFIGFS_ATTR(cluster_, tcp_port); + static ssize_t cluster_set(struct dlm_cluster *cl, unsigned int *cl_field, int *info_field, int (*check_cb)(unsigned int x), const char *buf, size_t len) @@ -191,17 +230,6 @@ static int dlm_check_protocol_and_dlm_running(unsigned= int x) return 0; } =20 -static int dlm_check_zero_and_dlm_running(unsigned int x) -{ - if (!x) - return -EINVAL; - - if (dlm_lowcomms_is_running()) - return -EBUSY; - - return 0; -} - static int dlm_check_zero(unsigned int x) { if (!x) @@ -218,7 +246,6 @@ static int dlm_check_buffer_size(unsigned int x) return 0; } =20 -CLUSTER_ATTR(tcp_port, dlm_check_zero_and_dlm_running); CLUSTER_ATTR(buffer_size, dlm_check_buffer_size); CLUSTER_ATTR(rsbtbl_size, dlm_check_zero); CLUSTER_ATTR(recover_timer, dlm_check_zero); @@ -974,7 +1001,7 @@ int dlm_our_addr(struct sockaddr_storage *addr, int nu= m) #define DEFAULT_CLUSTER_NAME "" =20 struct dlm_config_info dlm_config =3D { - .ci_tcp_port =3D DEFAULT_TCP_PORT, + .ci_tcp_port =3D cpu_to_be16(DEFAULT_TCP_PORT), .ci_buffer_size =3D DLM_MAX_SOCKET_BUFSIZE, .ci_rsbtbl_size =3D DEFAULT_RSBTBL_SIZE, .ci_recover_timer =3D DEFAULT_RECOVER_TIMER, diff --git a/fs/dlm/config.h b/fs/dlm/config.h index ed237d910208..9cb4300cce7c 100644 --- a/fs/dlm/config.h +++ b/fs/dlm/config.h @@ -29,7 +29,7 @@ extern const struct rhashtable_params dlm_rhash_rsb_param= s; #define DLM_PROTO_SCTP 1 =20 struct dlm_config_info { - int ci_tcp_port; + __be16 ci_tcp_port; int ci_buffer_size; int ci_rsbtbl_size; int ci_recover_timer; diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c index cb3a10b041c2..df40c3fd1070 100644 --- a/fs/dlm/lowcomms.c +++ b/fs/dlm/lowcomms.c @@ -660,18 +660,18 @@ static void add_sock(struct socket *sock, struct conn= ection *con) =20 /* Add the port number to an IPv6 or 4 sockaddr and return the address length */ -static void make_sockaddr(struct sockaddr_storage *saddr, uint16_t port, +static void make_sockaddr(struct sockaddr_storage *saddr, __be16 port, int *addr_len) { saddr->ss_family =3D dlm_local_addr[0].ss_family; if (saddr->ss_family =3D=3D AF_INET) { struct sockaddr_in *in4_addr =3D (struct sockaddr_in *)saddr; - in4_addr->sin_port =3D cpu_to_be16(port); + in4_addr->sin_port =3D port; *addr_len =3D sizeof(struct sockaddr_in); memset(&in4_addr->sin_zero, 0, sizeof(in4_addr->sin_zero)); } else { struct sockaddr_in6 *in6_addr =3D (struct sockaddr_in6 *)saddr; - in6_addr->sin6_port =3D cpu_to_be16(port); + in6_addr->sin6_port =3D port; *addr_len =3D sizeof(struct sockaddr_in6); } memset((char *)saddr + *addr_len, 0, sizeof(struct sockaddr_storage) - *a= ddr_len); @@ -1121,7 +1121,7 @@ static void writequeue_entry_complete(struct writeque= ue_entry *e, int completed) /* * sctp_bind_addrs - bind a SCTP socket to all our addresses */ -static int sctp_bind_addrs(struct socket *sock, uint16_t port) +static int sctp_bind_addrs(struct socket *sock, __be16 port) { struct sockaddr_storage localaddr; struct sockaddr *addr =3D (struct sockaddr *)&localaddr; --=20 2.43.0