From: Gerrit Renker <gerrit@erg.abdn.ac.uk>
To: davem@davemloft.net
Cc: dccp@vger.kernel.org, netdev@vger.kernel.org,
Gerrit Renker <gerrit@erg.abdn.ac.uk>
Subject: [PATCH 2/6] dccp: combine the functionality of enqeueing and cloning
Date: Mon, 4 Jul 2011 13:01:15 -0600 [thread overview]
Message-ID: <1309806079-21604-3-git-send-email-gerrit@erg.abdn.ac.uk> (raw)
In-Reply-To: <test_tree_patch_set_update_2011-07-04>
Realising the following call pattern,
* first dccp_entail() is called to enqueue a new skb and
* then skb_clone() is called to transmit a clone of that skb,
this patch integrates both into the same function.
Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
---
net/dccp/output.c | 14 +++++++-------
1 files changed, 7 insertions(+), 7 deletions(-)
--- a/net/dccp/output.c
+++ b/net/dccp/output.c
@@ -27,11 +27,13 @@ static inline void dccp_event_ack_sent(struct sock *sk)
inet_csk_clear_xmit_timer(sk, ICSK_TIME_DACK);
}
-static void dccp_skb_entail(struct sock *sk, struct sk_buff *skb)
+/* enqueue @skb on sk_send_head for retransmission, return clone to send now */
+static struct sk_buff *dccp_skb_entail(struct sock *sk, struct sk_buff *skb)
{
skb_set_owner_w(skb, sk);
WARN_ON(sk->sk_send_head);
sk->sk_send_head = skb;
+ return skb_clone(sk->sk_send_head, gfp_any());
}
/*
@@ -552,8 +554,7 @@ int dccp_connect(struct sock *sk)
DCCP_SKB_CB(skb)->dccpd_type = DCCP_PKT_REQUEST;
- dccp_skb_entail(sk, skb);
- dccp_transmit_skb(sk, skb_clone(skb, GFP_KERNEL));
+ dccp_transmit_skb(sk, dccp_skb_entail(sk, skb));
DCCP_INC_STATS(DCCP_MIB_ACTIVEOPENS);
/* Timer for repeating the REQUEST until an answer. */
@@ -678,8 +679,7 @@ void dccp_send_close(struct sock *sk, const int active)
DCCP_SKB_CB(skb)->dccpd_type = DCCP_PKT_CLOSE;
if (active) {
- dccp_skb_entail(sk, skb);
- dccp_transmit_skb(sk, skb_clone(skb, prio));
+ skb = dccp_skb_entail(sk, skb);
/*
* Retransmission timer for active-close: RFC 4340, 8.3 requires
* to retransmit the Close/CloseReq until the CLOSING/CLOSEREQ
@@ -692,6 +692,6 @@ void dccp_send_close(struct sock *sk, const int active)
*/
inet_csk_reset_xmit_timer(sk, ICSK_TIME_RETRANS,
DCCP_TIMEOUT_INIT, DCCP_RTO_MAX);
- } else
- dccp_transmit_skb(sk, skb);
+ }
+ dccp_transmit_skb(sk, skb);
}
next prev parent reply other threads:[~2011-07-04 19:21 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <test_tree_patch_set_update_2011-07-04>
2011-07-04 19:01 ` net-next-2.6 [PATCH 0/6] dccp: several long-tested updates from dccp test tree Gerrit Renker
2011-07-05 0:55 ` David Miller
2011-07-04 19:01 ` [PATCH 1/6] dccp: Clean up slow-path input processing Gerrit Renker
2011-07-04 19:01 ` Gerrit Renker [this message]
2011-07-04 19:01 ` [PATCH 3/6] dccp: cosmetics of info message Gerrit Renker
2011-07-04 19:01 ` [PATCH 4/6] dccp ccid-2: move rfc 3390 function into header file Gerrit Renker
2011-07-04 19:01 ` [PATCH 5/6] dccp ccid-2: Use existing function to test for data packets Gerrit Renker
2011-07-04 19:01 ` [PATCH 6/6] dccp ccid-2: Perform congestion-window validation Gerrit Renker
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