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Message-Id: <20181219021800.21662-5-tuong.t.lien@dektech.com.au>
Date: Wed, 19 Dec 2018 09:17:59 +0700
From: Tuong Lien <tuong.t.lien@...tech.com.au>
To: davem@...emloft.net, jon.maloy@...csson.com, netdev@...r.kernel.org
Cc: tipc-discussion@...ts.sourceforge.net
Subject: [net-next 4/5] tipc: add trace_events for tipc node
The commit adds the new trace_events for TIPC node object:
trace_tipc_node_create()
trace_tipc_node_delete()
trace_tipc_node_lost_contact()
trace_tipc_node_timeout()
trace_tipc_node_link_up()
trace_tipc_node_link_down()
trace_tipc_node_reset_links()
trace_tipc_node_fsm_evt()
trace_tipc_node_check_state()
Also, enables the traces for the following cases:
- When a node is created/deleted;
- When a node contact is lost;
- When a node timer is timed out;
- When a node link is up/down;
- When all node links are reset;
- When node state is changed;
- When a skb comes and node state needs to be checked/updated.
Acked-by: Ying Xue <ying.xue@...driver.com>
Tested-by: Ying Xue <ying.xue@...driver.com>
Acked-by: Jon Maloy <jon.maloy@...csson.com>
Signed-off-by: Tuong Lien <tuong.t.lien@...tech.com.au>
---
net/tipc/node.c | 15 +++++++++++++++
net/tipc/trace.h | 9 +++++++++
2 files changed, 24 insertions(+)
diff --git a/net/tipc/node.c b/net/tipc/node.c
index cff42c95cef8..a67c40bf6e6c 100644
--- a/net/tipc/node.c
+++ b/net/tipc/node.c
@@ -433,6 +433,7 @@ static struct tipc_node *tipc_node_create(struct net *net, u32 addr,
break;
}
list_add_tail_rcu(&n->list, &temp_node->list);
+ trace_tipc_node_create(n, true, " ");
exit:
spin_unlock_bh(&tn->node_list_lock);
return n;
@@ -460,6 +461,7 @@ static void tipc_node_delete_from_list(struct tipc_node *node)
static void tipc_node_delete(struct tipc_node *node)
{
+ trace_tipc_node_delete(node, true, " ");
tipc_node_delete_from_list(node);
del_timer_sync(&node->timer);
@@ -614,6 +616,7 @@ static void tipc_node_timeout(struct timer_list *t)
int bearer_id;
int rc = 0;
+ trace_tipc_node_timeout(n, false, " ");
if (!node_is_up(n) && tipc_node_cleanup(n)) {
/*Removing the reference of Timer*/
tipc_node_put(n);
@@ -673,6 +676,7 @@ static void __tipc_node_link_up(struct tipc_node *n, int bearer_id,
pr_debug("Established link <%s> on network plane %c\n",
tipc_link_name(nl), tipc_link_plane(nl));
+ trace_tipc_node_link_up(n, true, " ");
/* Ensure that a STATE message goes first */
tipc_link_build_state_msg(nl, xmitq);
@@ -826,6 +830,7 @@ static void tipc_node_link_down(struct tipc_node *n, int bearer_id, bool delete)
/* Defuse pending tipc_node_link_up() */
tipc_link_fsm_evt(l, LINK_RESET_EVT);
}
+ trace_tipc_node_link_down(n, true, "node link down or deleted!");
tipc_node_write_unlock(n);
if (delete)
tipc_mon_remove_peer(n->net, n->addr, old_bearer_id);
@@ -1055,6 +1060,7 @@ static void tipc_node_reset_links(struct tipc_node *n)
pr_warn("Resetting all links to %x\n", n->addr);
+ trace_tipc_node_reset_links(n, true, " ");
for (i = 0; i < MAX_BEARERS; i++) {
tipc_node_link_down(n, i, false);
}
@@ -1230,11 +1236,13 @@ static void tipc_node_fsm_evt(struct tipc_node *n, int evt)
pr_err("Unknown node fsm state %x\n", state);
break;
}
+ trace_tipc_node_fsm(n->peer_id, n->state, state, evt);
n->state = state;
return;
illegal_evt:
pr_err("Illegal node fsm evt %x in state %x\n", evt, state);
+ trace_tipc_node_fsm(n->peer_id, n->state, state, evt);
}
static void node_lost_contact(struct tipc_node *n,
@@ -1248,6 +1256,7 @@ static void node_lost_contact(struct tipc_node *n,
pr_debug("Lost contact with %x\n", n->addr);
n->delete_at = jiffies + msecs_to_jiffies(NODE_CLEANUP_AFTER);
+ trace_tipc_node_lost_contact(n, true, " ");
/* Clean up broadcast state */
tipc_bcast_remove_peer(n->net, n->bc_entry.link);
@@ -1572,6 +1581,10 @@ static bool tipc_node_check_state(struct tipc_node *n, struct sk_buff *skb,
struct tipc_media_addr *maddr;
int pb_id;
+ if (trace_tipc_node_check_state_enabled()) {
+ trace_tipc_skb_dump(skb, false, "skb for node state check");
+ trace_tipc_node_check_state(n, true, " ");
+ }
l = n->links[bearer_id].link;
if (!l)
return false;
@@ -1623,6 +1636,8 @@ static bool tipc_node_check_state(struct tipc_node *n, struct sk_buff *skb,
syncpt = oseqno + exp_pkts - 1;
if (pl && tipc_link_is_up(pl)) {
__tipc_node_link_down(n, &pb_id, xmitq, &maddr);
+ trace_tipc_node_link_down(n, true,
+ "node link down <- failover!");
tipc_skb_queue_splice_tail_init(tipc_link_inputq(pl),
tipc_link_inputq(l));
}
diff --git a/net/tipc/trace.h b/net/tipc/trace.h
index ebbfcd14627e..4d05141866aa 100644
--- a/net/tipc/trace.h
+++ b/net/tipc/trace.h
@@ -337,6 +337,14 @@ DEFINE_EVENT(tipc_node_class, name, \
TP_PROTO(struct tipc_node *n, bool more, const char *header), \
TP_ARGS(n, more, header))
DEFINE_NODE_EVENT(tipc_node_dump);
+DEFINE_NODE_EVENT(tipc_node_create);
+DEFINE_NODE_EVENT(tipc_node_delete);
+DEFINE_NODE_EVENT(tipc_node_lost_contact);
+DEFINE_NODE_EVENT(tipc_node_timeout);
+DEFINE_NODE_EVENT(tipc_node_link_up);
+DEFINE_NODE_EVENT(tipc_node_link_down);
+DEFINE_NODE_EVENT(tipc_node_reset_links);
+DEFINE_NODE_EVENT(tipc_node_check_state);
DECLARE_EVENT_CLASS(tipc_fsm_class,
@@ -368,6 +376,7 @@ DEFINE_EVENT(tipc_fsm_class, fsm_name, \
TP_PROTO(const char *name, u32 os, u32 ns, int evt), \
TP_ARGS(name, os, ns, evt))
DEFINE_FSM_EVENT(tipc_link_fsm);
+DEFINE_FSM_EVENT(tipc_node_fsm);
#endif /* _TIPC_TRACE_H */
--
2.13.7
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