From patchwork Wed Feb 13 09:55:11 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Simon Wunderlich X-Patchwork-Id: 17811 X-Patchwork-Delegate: sw@simonwunderlich.de Return-Path: X-Original-To: patchwork@open-mesh.org Delivered-To: patchwork@open-mesh.org Received: from open-mesh.org (localhost [IPv6:::1]) by open-mesh.org (Postfix) with ESMTP id E51AC81C2C; Wed, 13 Feb 2019 10:55:51 +0100 (CET) Received-SPF: Pass (mailfrom) identity=mailfrom; client-ip=2001:4d88:2000:24::c0de; helo=mail.mail.packetmixer.de; envelope-from=sw@simonwunderlich.de; receiver= Received: from mail.mail.packetmixer.de (packetmixer.de [IPv6:2001:4d88:2000:24::c0de]) by open-mesh.org (Postfix) with ESMTPS id 5524E81B90 for ; Wed, 13 Feb 2019 10:55:33 +0100 (CET) Received: from kero.packetmixer.de (unknown [IPv6:2001:16b8:5579:c900:2883:dea4:76a5:7f1f]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.mail.packetmixer.de (Postfix) with ESMTPSA id 379FC6205C; Wed, 13 Feb 2019 10:55:33 +0100 (CET) From: Simon Wunderlich To: davem@davemloft.net Date: Wed, 13 Feb 2019 10:55:11 +0100 Message-Id: <20190213095524.10147-9-sw@simonwunderlich.de> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20190213095524.10147-1-sw@simonwunderlich.de> References: <20190213095524.10147-1-sw@simonwunderlich.de> Subject: [B.A.T.M.A.N.] [PATCH 08/21] batman-adv: Add ap_isolation mesh/vlan genl configuration X-BeenThere: b.a.t.m.a.n@lists.open-mesh.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: The list for a Better Approach To Mobile Ad-hoc Networking List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: The list for a Better Approach To Mobile Ad-hoc Networking Cc: netdev@vger.kernel.org, b.a.t.m.a.n@lists.open-mesh.org Errors-To: b.a.t.m.a.n-bounces@lists.open-mesh.org Sender: "B.A.T.M.A.N" From: Sven Eckelmann The mesh interface can drop messages between clients to implement a mesh-wide AP isolation. The BATADV_CMD_SET_MESH/BATADV_CMD_GET_MESH and BATADV_CMD_SET_VLAN/BATADV_CMD_GET_VLAN commands allow to set/get the configuration of this feature using the BATADV_ATTR_AP_ISOLATION_ENABLED attribute. Setting the u8 to zero will disable this feature and setting it to something else is enabling this feature. This feature also requires that skbuff which should be handled as isolated are marked. The BATADV_CMD_SET_MESH/BATADV_CMD_GET_MESH commands allow to set/get the mark/mask using the u32 attributes BATADV_ATTR_ISOLATION_MARK and BATADV_ATTR_ISOLATION_MASK. Signed-off-by: Sven Eckelmann Signed-off-by: Simon Wunderlich --- include/uapi/linux/batman_adv.h | 19 +++++++++ net/batman-adv/netlink.c | 89 +++++++++++++++++++++++++++++++++++++++++ 2 files changed, 108 insertions(+) diff --git a/include/uapi/linux/batman_adv.h b/include/uapi/linux/batman_adv.h index f8941e80d6b4..a4dadafe08dd 100644 --- a/include/uapi/linux/batman_adv.h +++ b/include/uapi/linux/batman_adv.h @@ -356,6 +356,25 @@ enum batadv_nl_attrs { */ BATADV_ATTR_AGGREGATED_OGMS_ENABLED, + /** + * @BATADV_ATTR_AP_ISOLATION_ENABLED: whether the data traffic going + * from a wireless client to another wireless client will be silently + * dropped. + */ + BATADV_ATTR_AP_ISOLATION_ENABLED, + + /** + * @BATADV_ATTR_ISOLATION_MARK: the isolation mark which is used to + * classify clients as "isolated" by the Extended Isolation feature. + */ + BATADV_ATTR_ISOLATION_MARK, + + /** + * @BATADV_ATTR_ISOLATION_MASK: the isolation (bit)mask which is used to + * classify clients as "isolated" by the Extended Isolation feature. + */ + BATADV_ATTR_ISOLATION_MASK, + /* add attributes above here, update the policy in netlink.c */ /** diff --git a/net/batman-adv/netlink.c b/net/batman-adv/netlink.c index 82665dc2eb2b..fc80f003ed6e 100644 --- a/net/batman-adv/netlink.c +++ b/net/batman-adv/netlink.c @@ -140,6 +140,9 @@ static const struct nla_policy batadv_netlink_policy[NUM_BATADV_ATTR] = { [BATADV_ATTR_MCAST_FLAGS_PRIV] = { .type = NLA_U32 }, [BATADV_ATTR_VLANID] = { .type = NLA_U16 }, [BATADV_ATTR_AGGREGATED_OGMS_ENABLED] = { .type = NLA_U8 }, + [BATADV_ATTR_AP_ISOLATION_ENABLED] = { .type = NLA_U8 }, + [BATADV_ATTR_ISOLATION_MARK] = { .type = NLA_U32 }, + [BATADV_ATTR_ISOLATION_MASK] = { .type = NLA_U32 }, }; /** @@ -158,6 +161,52 @@ batadv_netlink_get_ifindex(const struct nlmsghdr *nlh, int attrtype) } /** + * batadv_netlink_mesh_fill_ap_isolation() - Add ap_isolation softif attribute + * @msg: Netlink message to dump into + * @bat_priv: the bat priv with all the soft interface information + * + * Return: 0 on success or negative error number in case of failure + */ +static int batadv_netlink_mesh_fill_ap_isolation(struct sk_buff *msg, + struct batadv_priv *bat_priv) +{ + struct batadv_softif_vlan *vlan; + u8 ap_isolation; + + vlan = batadv_softif_vlan_get(bat_priv, BATADV_NO_FLAGS); + if (!vlan) + return 0; + + ap_isolation = atomic_read(&vlan->ap_isolation); + batadv_softif_vlan_put(vlan); + + return nla_put_u8(msg, BATADV_ATTR_AP_ISOLATION_ENABLED, + !!ap_isolation); +} + +/** + * batadv_option_set_ap_isolation() - Set ap_isolation from genl msg + * @attr: parsed BATADV_ATTR_AP_ISOLATION_ENABLED attribute + * @bat_priv: the bat priv with all the soft interface information + * + * Return: 0 on success or negative error number in case of failure + */ +static int batadv_netlink_set_mesh_ap_isolation(struct nlattr *attr, + struct batadv_priv *bat_priv) +{ + struct batadv_softif_vlan *vlan; + + vlan = batadv_softif_vlan_get(bat_priv, BATADV_NO_FLAGS); + if (!vlan) + return -ENOENT; + + atomic_set(&vlan->ap_isolation, !!nla_get_u8(attr)); + batadv_softif_vlan_put(vlan); + + return 0; +} + +/** * batadv_netlink_mesh_fill() - Fill message with mesh attributes * @msg: Netlink message to dump into * @bat_priv: the bat priv with all the soft interface information @@ -219,6 +268,17 @@ static int batadv_netlink_mesh_fill(struct sk_buff *msg, !!atomic_read(&bat_priv->aggregated_ogms))) goto nla_put_failure; + if (batadv_netlink_mesh_fill_ap_isolation(msg, bat_priv)) + goto nla_put_failure; + + if (nla_put_u32(msg, BATADV_ATTR_ISOLATION_MARK, + bat_priv->isolation_mark)) + goto nla_put_failure; + + if (nla_put_u32(msg, BATADV_ATTR_ISOLATION_MASK, + bat_priv->isolation_mark_mask)) + goto nla_put_failure; + if (primary_if) batadv_hardif_put(primary_if); @@ -309,6 +369,24 @@ static int batadv_netlink_set_mesh(struct sk_buff *skb, struct genl_info *info) atomic_set(&bat_priv->aggregated_ogms, !!nla_get_u8(attr)); } + if (info->attrs[BATADV_ATTR_AP_ISOLATION_ENABLED]) { + attr = info->attrs[BATADV_ATTR_AP_ISOLATION_ENABLED]; + + batadv_netlink_set_mesh_ap_isolation(attr, bat_priv); + } + + if (info->attrs[BATADV_ATTR_ISOLATION_MARK]) { + attr = info->attrs[BATADV_ATTR_ISOLATION_MARK]; + + bat_priv->isolation_mark = nla_get_u32(attr); + } + + if (info->attrs[BATADV_ATTR_ISOLATION_MASK]) { + attr = info->attrs[BATADV_ATTR_ISOLATION_MASK]; + + bat_priv->isolation_mark_mask = nla_get_u32(attr); + } + batadv_netlink_notify_mesh(bat_priv); return 0; @@ -705,6 +783,10 @@ static int batadv_netlink_vlan_fill(struct sk_buff *msg, if (nla_put_u32(msg, BATADV_ATTR_VLANID, vlan->vid & VLAN_VID_MASK)) goto nla_put_failure; + if (nla_put_u8(msg, BATADV_ATTR_AP_ISOLATION_ENABLED, + !!atomic_read(&vlan->ap_isolation))) + goto nla_put_failure; + genlmsg_end(msg, hdr); return 0; @@ -785,6 +867,13 @@ static int batadv_netlink_set_vlan(struct sk_buff *skb, struct genl_info *info) { struct batadv_softif_vlan *vlan = info->user_ptr[1]; struct batadv_priv *bat_priv = info->user_ptr[0]; + struct nlattr *attr; + + if (info->attrs[BATADV_ATTR_AP_ISOLATION_ENABLED]) { + attr = info->attrs[BATADV_ATTR_AP_ISOLATION_ENABLED]; + + atomic_set(&vlan->ap_isolation, !!nla_get_u8(attr)); + } batadv_netlink_notify_vlan(bat_priv, vlan);