提交 18219463 编写于 作者: G Gerrit Renker

dccp ccid-2: Consolidate Ack-Vector processing within main DCCP module

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: NGerrit Renker <gerrit@erg.abdn.ac.uk>
上级 38024086
......@@ -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 @@ static int __dccp_rcv_established(struct sock *sk, struct sk_buff *skb,
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);
}
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册