tipc: get monitor threshold for the cluster
In this commit, we add support to fetch the configured
cluster monitoring threshold.
Reviewed-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: Parthasarathy Bhuvaragan <parthasarathy.bhuvaragan@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/uapi/linux/tipc_netlink.h b/include/uapi/linux/tipc_netlink.h
index d387b65..d07c6ec 100644
--- a/include/uapi/linux/tipc_netlink.h
+++ b/include/uapi/linux/tipc_netlink.h
@@ -57,6 +57,7 @@
TIPC_NL_NET_SET,
TIPC_NL_NAME_TABLE_GET,
TIPC_NL_MON_SET,
+ TIPC_NL_MON_GET,
__TIPC_NL_CMD_MAX,
TIPC_NL_CMD_MAX = __TIPC_NL_CMD_MAX - 1
diff --git a/net/tipc/monitor.c b/net/tipc/monitor.c
index 3892d05..3579126 100644
--- a/net/tipc/monitor.c
+++ b/net/tipc/monitor.c
@@ -661,3 +661,10 @@
return 0;
}
+
+int tipc_nl_monitor_get_threshold(struct net *net)
+{
+ struct tipc_net *tn = tipc_net(net);
+
+ return tn->mon_threshold;
+}
diff --git a/net/tipc/monitor.h b/net/tipc/monitor.h
index 91f5dd09..aedf62c 100644
--- a/net/tipc/monitor.h
+++ b/net/tipc/monitor.h
@@ -70,5 +70,7 @@
void tipc_mon_remove_peer(struct net *net, u32 addr, int bearer_id);
int tipc_nl_monitor_set_threshold(struct net *net, u32 cluster_size);
+int tipc_nl_monitor_get_threshold(struct net *net);
+
extern const int tipc_max_domain_size;
#endif
diff --git a/net/tipc/netlink.c b/net/tipc/netlink.c
index 1e43ac0..2cfc5f7c 100644
--- a/net/tipc/netlink.c
+++ b/net/tipc/netlink.c
@@ -226,6 +226,11 @@
.doit = tipc_nl_node_set_monitor,
.policy = tipc_nl_policy,
},
+ {
+ .cmd = TIPC_NL_MON_GET,
+ .doit = tipc_nl_node_get_monitor,
+ .policy = tipc_nl_policy,
+ },
};
int tipc_nlmsg_parse(const struct nlmsghdr *nlh, struct nlattr ***attr)
diff --git a/net/tipc/node.c b/net/tipc/node.c
index 0fc531d..2a7e747 100644
--- a/net/tipc/node.c
+++ b/net/tipc/node.c
@@ -1955,3 +1955,55 @@
return 0;
}
+
+static int __tipc_nl_add_monitor_prop(struct net *net, struct tipc_nl_msg *msg)
+{
+ struct nlattr *attrs;
+ void *hdr;
+ u32 val;
+
+ hdr = genlmsg_put(msg->skb, msg->portid, msg->seq, &tipc_genl_family,
+ 0, TIPC_NL_MON_GET);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ attrs = nla_nest_start(msg->skb, TIPC_NLA_MON);
+ if (!attrs)
+ goto msg_full;
+
+ val = tipc_nl_monitor_get_threshold(net);
+
+ if (nla_put_u32(msg->skb, TIPC_NLA_MON_ACTIVATION_THRESHOLD, val))
+ goto attr_msg_full;
+
+ nla_nest_end(msg->skb, attrs);
+ genlmsg_end(msg->skb, hdr);
+
+ return 0;
+
+attr_msg_full:
+ nla_nest_cancel(msg->skb, attrs);
+msg_full:
+ genlmsg_cancel(msg->skb, hdr);
+
+ return -EMSGSIZE;
+}
+
+int tipc_nl_node_get_monitor(struct sk_buff *skb, struct genl_info *info)
+{
+ struct net *net = sock_net(skb->sk);
+ struct tipc_nl_msg msg;
+ int err;
+
+ msg.skb = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
+ msg.portid = info->snd_portid;
+ msg.seq = info->snd_seq;
+
+ err = __tipc_nl_add_monitor_prop(net, &msg);
+ if (err) {
+ nlmsg_free(msg.skb);
+ return err;
+ }
+
+ return genlmsg_reply(msg.skb, info);
+}
diff --git a/net/tipc/node.h b/net/tipc/node.h
index 65aa12ed..216f053 100644
--- a/net/tipc/node.h
+++ b/net/tipc/node.h
@@ -79,4 +79,5 @@
int tipc_nl_node_set_link(struct sk_buff *skb, struct genl_info *info);
int tipc_nl_node_set_monitor(struct sk_buff *skb, struct genl_info *info);
+int tipc_nl_node_get_monitor(struct sk_buff *skb, struct genl_info *info);
#endif