From eb18a510b5cd4daeb9736ad8db57a9fc49db185b Mon Sep 17 00:00:00 2001 From: Tuong Lien Date: Wed, 19 Dec 2018 09:17:59 +0700 Subject: 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 Tested-by: Ying Xue Acked-by: Jon Maloy Signed-off-by: Tuong Lien Signed-off-by: David S. Miller --- net/tipc/node.c | 15 +++++++++++++++ net/tipc/trace.h | 9 +++++++++ 2 files changed, 24 insertions(+) (limited to 'net') diff --git a/net/tipc/node.c b/net/tipc/node.c index 1e13ea98b96c..db2a6c3e0be9 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); @@ -617,6 +619,7 @@ 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); @@ -682,6 +685,7 @@ 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); @@ -835,6 +839,7 @@ 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); @@ -1064,6 +1069,7 @@ 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); } @@ -1239,11 +1245,13 @@ 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, @@ -1257,6 +1265,7 @@ 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); @@ -1585,6 +1594,10 @@ 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; @@ -1636,6 +1649,8 @@ 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 */ -- cgit v1.2.3