From ecdfbdabbe4e0cf0443cbbea2df1bf51bf67f3f3 Mon Sep 17 00:00:00 2001
From: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Date: Mon, 11 Oct 2010 20:41:13 +0200
Subject: [PATCH] dccp: schedule an Ack when receiving timestamps
This schedules an Ack when receiving a timestamp, exploiting the
existing inet_csk_schedule_ack() function, saving one case in the
`dccp_ack_pending()' function.
Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
---
net/dccp/dccp.h | 3 +--
net/dccp/options.c | 2 ++
2 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/net/dccp/dccp.h b/net/dccp/dccp.h
index 60f4f9622ab3..3eb264b60823 100644
--- a/net/dccp/dccp.h
+++ b/net/dccp/dccp.h
@@ -459,8 +459,7 @@ static inline void dccp_update_gss(struct sock *sk, u64 seq)
static inline int dccp_ack_pending(const struct sock *sk)
{
const struct dccp_sock *dp = dccp_sk(sk);
- return dp->dccps_timestamp_echo != 0 ||
- (dp->dccps_hc_rx_ackvec != NULL &&
+ return (dp->dccps_hc_rx_ackvec != NULL &&
dccp_ackvec_pending(dp->dccps_hc_rx_ackvec)) ||
inet_csk_ack_scheduled(sk);
}
diff --git a/net/dccp/options.c b/net/dccp/options.c
index d4b1ae0daacb..cd3061813009 100644
--- a/net/dccp/options.c
+++ b/net/dccp/options.c
@@ -163,6 +163,8 @@ int dccp_parse_options(struct sock *sk, struct dccp_request_sock *dreq,
dccp_role(sk), ntohl(opt_val),
(unsigned long long)
DCCP_SKB_CB(skb)->dccpd_ack_seq);
+ /* schedule an Ack in case this sender is quiescent */
+ inet_csk_schedule_ack(sk);
break;
case DCCPO_TIMESTAMP_ECHO:
if (len != 4 && len != 6 && len != 8)
--
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