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authorSven Eckelmann <sven@narfation.org>2018-11-23 12:51:55 +0100
committerSimon Wunderlich <sw@simonwunderlich.de>2019-02-09 14:28:13 +0100
commite43d16b87dc2cad18799cfd1142f4acae4135ea4 (patch)
tree1089596bc9b19b0c0d1326cd0aef14bcede79edb /net/batman-adv
parent9ab4cee5ced970019a5d0f3a43cf85671ca7b38f (diff)
downloadlinux-e43d16b87dc2cad18799cfd1142f4acae4135ea4.tar.bz2
batman-adv: Add ap_isolation mesh/vlan genl configuration
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 <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Diffstat (limited to 'net/batman-adv')
-rw-r--r--net/batman-adv/netlink.c89
1 files changed, 89 insertions, 0 deletions
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);