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 3/6] dccp ccid-2: Consolidate Ack-Vector processing within main DCCP module
Date: Mon, 15 Nov 2010 07:29:04 +0100 [thread overview]
Message-ID: <1289802547-5617-4-git-send-email-gerrit@erg.abdn.ac.uk> (raw)
In-Reply-To: <1289802547-5617-3-git-send-email-gerrit@erg.abdn.ac.uk>
This aggregates Ack Vector processing (handling input and clearing old state)
into one function, for the following reasons and benefits:
* all Ack Vector-specific processing is now in one place;
* duplicated code is removed;
* ensuring sanity: from an Ack Vector point of view, it is better to clear the
old state first before entering new state;
* Ack Event handling happens mostly within the CCIDs, not the main DCCP module.
Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
---
net/dccp/input.c | 31 +++++++++----------------------
1 files changed, 9 insertions(+), 22 deletions(-)
--- a/net/dccp/input.c
+++ b/net/dccp/input.c
@@ -160,13 +160,15 @@ static void dccp_rcv_reset(struct sock *sk, struct sk_buff *skb)
dccp_time_wait(sk, DCCP_TIME_WAIT, 0);
}
-static void dccp_event_ack_recv(struct sock *sk, struct sk_buff *skb)
+static void dccp_handle_ackvec_processing(struct sock *sk, struct sk_buff *skb)
{
- struct dccp_sock *dp = dccp_sk(sk);
+ struct dccp_ackvec *av = dccp_sk(sk)->dccps_hc_rx_ackvec;
- if (dp->dccps_hc_rx_ackvec != NULL)
- dccp_ackvec_clear_state(dp->dccps_hc_rx_ackvec,
- DCCP_SKB_CB(skb)->dccpd_ack_seq);
+ if (av == NULL)
+ return;
+ if (DCCP_SKB_CB(skb)->dccpd_ack_seq != DCCP_PKT_WITHOUT_ACK_SEQ)
+ dccp_ackvec_clear_state(av, DCCP_SKB_CB(skb)->dccpd_ack_seq);
+ dccp_ackvec_input(av, skb);
}
static void dccp_deliver_input_to_ccids(struct sock *sk, struct sk_buff *skb)
@@ -365,21 +367,13 @@ discard:
int dccp_rcv_established(struct sock *sk, struct sk_buff *skb,
const struct dccp_hdr *dh, const unsigned len)
{
- struct dccp_sock *dp = dccp_sk(sk);
-
if (dccp_check_seqno(sk, skb))
goto discard;
if (dccp_parse_options(sk, NULL, skb))
return 1;
- if (DCCP_SKB_CB(skb)->dccpd_ack_seq != DCCP_PKT_WITHOUT_ACK_SEQ)
- dccp_event_ack_recv(sk, skb);
-
- if (dp->dccps_hc_rx_ackvec != NULL &&
- dccp_ackvec_add(dp->dccps_hc_rx_ackvec, sk,
- DCCP_SKB_CB(skb)->dccpd_seq, DCCPAV_RECEIVED))
- goto discard;
+ dccp_handle_ackvec_processing(sk, skb);
dccp_deliver_input_to_ccids(sk, skb);
return __dccp_rcv_established(sk, skb, dh, len);
@@ -631,14 +625,7 @@ int dccp_rcv_state_process(struct sock *sk, struct sk_buff *skb,
if (dccp_parse_options(sk, NULL, skb))
return 1;
- if (dcb->dccpd_ack_seq != DCCP_PKT_WITHOUT_ACK_SEQ)
- dccp_event_ack_recv(sk, skb);
-
- if (dp->dccps_hc_rx_ackvec != NULL &&
- dccp_ackvec_add(dp->dccps_hc_rx_ackvec, sk,
- DCCP_SKB_CB(skb)->dccpd_seq, DCCPAV_RECEIVED))
- goto discard;
-
+ dccp_handle_ackvec_processing(sk, skb);
dccp_deliver_input_to_ccids(sk, skb);
}
next prev parent reply other threads:[~2010-11-15 6:29 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <dccp_ccid2_ack_vector_patch_set_concluding_part_II>
2010-11-15 6:29 ` net-next-2.6 [PATCH 0/6]: dccp ccid-2: Ack Vector patch set second/concluding part II Gerrit Renker
2010-11-15 6:29 ` [PATCH 1/6] dccp ccid-2: Algorithm to update buffer state Gerrit Renker
2010-11-15 6:29 ` [PATCH 2/6] dccp ccid-2: Update code for the Ack Vector input/registration routine Gerrit Renker
2010-11-15 6:29 ` Gerrit Renker [this message]
2010-11-15 6:29 ` [PATCH 4/6] dccp ccid-2: Schedule Sync as out-of-band mechanism Gerrit Renker
2010-11-15 6:29 ` [PATCH 5/6] dccp ccid-2: Remove old infrastructure Gerrit Renker
2010-11-15 6:29 ` [PATCH 6/6] dccp ccid-2: Separate option parsing from CCID processing Gerrit Renker
2010-11-15 19:04 ` net-next-2.6 [PATCH 0/6]: dccp ccid-2: Ack Vector patch set second/concluding part II David Miller
2010-11-18 6:42 ` Gerrit Renker
2010-11-18 17:37 ` David Miller
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