netdev - [PATCH 22/31] [DCCP]: More debug information for dccp_wait_for

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Date:	Tue, 20 Mar 2007 20:16:51 -0300
From:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
To:	"David S. Miller" <davem@...emloft.net>
Cc:	netdev@...r.kernel.org
Subject: [PATCH 22/31] [DCCP]: More debug information for dccp_wait_for_ccid

This adds more detail in the wait_for_ccid packet scheduling loop.
In particular, it informs about (i) when delay is used and (ii) why
a packet is discarded.

Signed-off-by: Gerrit Renker <gerrit@....abdn.ac.uk>
Signed-off-by: Ian McDonald <ian.mcdonald@...di.co.nz>
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 net/dccp/output.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/net/dccp/output.c b/net/dccp/output.c
index aa21cc4..c8d843e 100644
--- a/net/dccp/output.c
+++ b/net/dccp/output.c
@@ -194,6 +194,7 @@ static int dccp_wait_for_ccid(struct sock *sk, struct sk_buff *skb)
 		rc = ccid_hc_tx_send_packet(dp->dccps_hc_tx_ccid, sk, skb);
 		if (rc <= 0)
 			break;
+		dccp_pr_debug("delayed send by %d msec\n", rc);
 		delay = msecs_to_jiffies(rc);
 		sk->sk_write_pending++;
 		release_sock(sk);
@@ -255,7 +256,7 @@ void dccp_write_xmit(struct sock *sk, int block)
 				DCCP_BUG("err=%d after ccid_hc_tx_packet_sent",
 					 err);
 		} else {
-			dccp_pr_debug("packet discarded\n");
+			dccp_pr_debug("packet discarded due to err=%d\n", err);
 			kfree_skb(skb);
 		}
 	}
-- 
1.5.0.3

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