tipc: add back link trace events

In the previous commit ("tipc: add Gap ACK blocks support for broadcast
link"), we have removed the following link trace events due to the code
changes:

- tipc_link_bc_ack
- tipc_link_retrans

This commit adds them back along with some minor changes to adapt to
the new code.

Acked-by: Ying Xue <ying.xue@windriver.com>
Acked-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: Tuong Lien <tuong.t.lien@dektech.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 0 deletions

diff --git a/net/tipc/link.c b/net/tipc/link.c
index d29b9c531171..288c5670cfa5 100644
--- a/net/tipc/link.c
+++ b/net/tipc/link.c
@@ -1504,6 +1504,8 @@ static int tipc_link_advance_transmq(struct tipc_link *l, struct tipc_link *r,
 	bool is_uc = !link_is_bc_sndlink(l);
 	bool bc_has_acked = false;
 
+	trace_tipc_link_retrans(r, acked + 1, acked + gap, &l->transmq);
+
 	/* Determine Gap ACK blocks if any for the particular link */
 	if (ga && is_uc) {
 		/* Get the Gap ACKs, uc part */
@@ -2410,6 +2412,7 @@ int tipc_link_bc_ack_rcv(struct tipc_link *r, u16 acked, u16 gap,
 	if (less(acked, r->acked) || (acked == r->acked && !gap && !ga))
 		return 0;
 
+	trace_tipc_link_bc_ack(r, acked, gap, &l->transmq);
 	tipc_link_advance_transmq(l, r, acked, gap, ga, xmitq, &unused, &rc);
 
 	tipc_link_advance_backlog(l, xmitq);