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authorParthasarathy Bhuvaragan <parthasarathy.bhuvaragan@ericsson.com>2016-07-26 09:47:22 +0300
committerDavid S. Miller <davem@davemloft.net>2016-07-27 00:26:42 +0300
commitcf6f7e1d51090772d5ff7355aaf0fcff17f20d1a (patch)
treef80b57ee326824ceda895bab95b821eb14b9b9d1 /net/tipc/node.c
parentff0d3e78a67a8edd09688f073361de9ed8abf9dc (diff)
downloadlinux-cf6f7e1d51090772d5ff7355aaf0fcff17f20d1a.tar.xz
tipc: dump monitor attributes
In this commit, we dump the monitor attributes when queried. The link monitor attributes are separated into two kinds: 1. general attributes per bearer 2. specific attributes per node/peer This style resembles the socket attributes and the nametable publications per socket. 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>
Diffstat (limited to 'net/tipc/node.c')
-rw-r--r--net/tipc/node.c86
1 files changed, 86 insertions, 0 deletions
diff --git a/net/tipc/node.c b/net/tipc/node.c
index 2a7e74753f9f..21974191e425 100644
--- a/net/tipc/node.c
+++ b/net/tipc/node.c
@@ -2007,3 +2007,89 @@ int tipc_nl_node_get_monitor(struct sk_buff *skb, struct genl_info *info)
return genlmsg_reply(msg.skb, info);
}
+
+int tipc_nl_node_dump_monitor(struct sk_buff *skb, struct netlink_callback *cb)
+{
+ struct net *net = sock_net(skb->sk);
+ u32 prev_bearer = cb->args[0];
+ struct tipc_nl_msg msg;
+ int err;
+ int i;
+
+ if (prev_bearer == MAX_BEARERS)
+ return 0;
+
+ msg.skb = skb;
+ msg.portid = NETLINK_CB(cb->skb).portid;
+ msg.seq = cb->nlh->nlmsg_seq;
+
+ rtnl_lock();
+ for (i = prev_bearer; i < MAX_BEARERS; i++) {
+ prev_bearer = i;
+ err = __tipc_nl_add_monitor(net, &msg, prev_bearer);
+ if (err)
+ goto out;
+ }
+
+out:
+ rtnl_unlock();
+ cb->args[0] = prev_bearer;
+
+ return skb->len;
+}
+
+int tipc_nl_node_dump_monitor_peer(struct sk_buff *skb,
+ struct netlink_callback *cb)
+{
+ struct net *net = sock_net(skb->sk);
+ u32 prev_node = cb->args[1];
+ u32 bearer_id = cb->args[2];
+ int done = cb->args[0];
+ struct tipc_nl_msg msg;
+ int err;
+
+ if (!prev_node) {
+ struct nlattr **attrs;
+ struct nlattr *mon[TIPC_NLA_MON_MAX + 1];
+
+ err = tipc_nlmsg_parse(cb->nlh, &attrs);
+ if (err)
+ return err;
+
+ if (!attrs[TIPC_NLA_MON])
+ return -EINVAL;
+
+ err = nla_parse_nested(mon, TIPC_NLA_MON_MAX,
+ attrs[TIPC_NLA_MON],
+ tipc_nl_monitor_policy);
+ if (err)
+ return err;
+
+ if (!mon[TIPC_NLA_MON_REF])
+ return -EINVAL;
+
+ bearer_id = nla_get_u32(mon[TIPC_NLA_MON_REF]);
+
+ if (bearer_id >= MAX_BEARERS)
+ return -EINVAL;
+ }
+
+ if (done)
+ return 0;
+
+ msg.skb = skb;
+ msg.portid = NETLINK_CB(cb->skb).portid;
+ msg.seq = cb->nlh->nlmsg_seq;
+
+ rtnl_lock();
+ err = tipc_nl_add_monitor_peer(net, &msg, bearer_id, &prev_node);
+ if (!err)
+ done = 1;
+
+ rtnl_unlock();
+ cb->args[0] = done;
+ cb->args[1] = prev_node;
+ cb->args[2] = bearer_id;
+
+ return skb->len;
+}