struct sock *newsk = inet_csk_clone(sk, req, GFP_ATOMIC);
if (newsk != NULL) {
- const struct dccp_request_sock *dreq = dccp_rsk(req);
+ struct dccp_request_sock *dreq = dccp_rsk(req);
struct inet_connection_sock *newicsk = inet_csk(newsk);
struct dccp_sock *newdp = dccp_sk(newsk);
- struct dccp_minisock *newdmsk = dccp_msk(newsk);
-
- newdp->dccps_role = DCCP_ROLE_SERVER;
- newdp->dccps_hc_rx_ackvec = NULL;
- newdp->dccps_service_list = NULL;
- newdp->dccps_service = dreq->dreq_service;
- newicsk->icsk_rto = DCCP_TIMEOUT_INIT;
-
- if (dccp_feat_clone(sk, newsk))
- goto out_free;
-
- if (newdmsk->dccpms_send_ack_vector) {
- newdp->dccps_hc_rx_ackvec =
- dccp_ackvec_alloc(GFP_ATOMIC);
- if (unlikely(newdp->dccps_hc_rx_ackvec == NULL))
- goto out_free;
- }
- newdp->dccps_hc_rx_ccid =
- ccid_hc_rx_new(newdmsk->dccpms_rx_ccid,
- newsk, GFP_ATOMIC);
- newdp->dccps_hc_tx_ccid =
- ccid_hc_tx_new(newdmsk->dccpms_tx_ccid,
- newsk, GFP_ATOMIC);
- if (unlikely(newdp->dccps_hc_rx_ccid == NULL ||
- newdp->dccps_hc_tx_ccid == NULL)) {
- dccp_ackvec_free(newdp->dccps_hc_rx_ackvec);
- ccid_hc_rx_delete(newdp->dccps_hc_rx_ccid, newsk);
- ccid_hc_tx_delete(newdp->dccps_hc_tx_ccid, newsk);
-out_free:
- /* It is still raw copy of parent, so invalidate
- * destructor and make plain sk_free() */
- newsk->sk_destruct = NULL;
- sk_free(newsk);
- return NULL;
- }
+ newdp->dccps_role = DCCP_ROLE_SERVER;
+ newdp->dccps_hc_rx_ackvec = NULL;
+ newdp->dccps_service_list = NULL;
+ newdp->dccps_service = dreq->dreq_service;
+ newdp->dccps_timestamp_echo = dreq->dreq_timestamp_echo;
+ newdp->dccps_timestamp_time = dreq->dreq_timestamp_time;
+ newicsk->icsk_rto = DCCP_TIMEOUT_INIT;
+ INIT_LIST_HEAD(&newdp->dccps_featneg);
/*
* Step 3: Process LISTEN state
*
* Initialize S.GAR := S.ISS
* Set S.ISR, S.GSR, S.SWL, S.SWH from packet or Init Cookies
*/
+ newdp->dccps_gar = newdp->dccps_iss = dreq->dreq_iss;
+ dccp_update_gss(newsk, dreq->dreq_iss);
- /* See dccp_v4_conn_request */
- newdmsk->dccpms_sequence_window = req->rcv_wnd;
-
- newdp->dccps_gar = newdp->dccps_isr = dreq->dreq_isr;
+ newdp->dccps_isr = dreq->dreq_isr;
dccp_update_gsr(newsk, dreq->dreq_isr);
- newdp->dccps_iss = dreq->dreq_iss;
- dccp_update_gss(newsk, dreq->dreq_iss);
-
/*
* SWL and AWL are initially adjusted so that they are not less than
* the initial Sequence Numbers received and sent, respectively:
dccp_set_seqno(&newdp->dccps_awl,
max48(newdp->dccps_awl, newdp->dccps_iss));
+ /*
+ * Activate features after initialising the sequence numbers,
+ * since CCID initialisation may depend on GSS, ISR, ISS etc.
+ */
+ if (dccp_feat_activate_values(newsk, &dreq->dreq_featneg)) {
+ /* It is still raw copy of parent, so invalidate
+ * destructor and make plain sk_free() */
+ newsk->sk_destruct = NULL;
+ sk_free(newsk);
+ return NULL;
+ }
dccp_init_xmit_timers(newsk);
DCCP_INC_STATS_BH(DCCP_MIB_PASSIVEOPENS);
struct request_sock **prev)
{
struct sock *child = NULL;
+ struct dccp_request_sock *dreq = dccp_rsk(req);
/* Check for retransmitted REQUEST */
if (dccp_hdr(skb)->dccph_type == DCCP_PKT_REQUEST) {
- struct dccp_request_sock *dreq = dccp_rsk(req);
if (after48(DCCP_SKB_CB(skb)->dccpd_seq, dreq->dreq_isr)) {
dccp_pr_debug("Retransmitted REQUEST\n");
* counter (backoff, monitored by dccp_response_timer).
*/
req->retrans++;
- req->rsk_ops->rtx_syn_ack(sk, req, NULL);
+ req->rsk_ops->rtx_syn_ack(sk, req);
}
/* Network Duplicate, discard packet */
return NULL;
goto drop;
/* Invalid ACK */
- if (DCCP_SKB_CB(skb)->dccpd_ack_seq != dccp_rsk(req)->dreq_iss) {
+ if (DCCP_SKB_CB(skb)->dccpd_ack_seq != dreq->dreq_iss) {
dccp_pr_debug("Invalid ACK number: ack_seq=%llu, "
"dreq_iss=%llu\n",
(unsigned long long)
DCCP_SKB_CB(skb)->dccpd_ack_seq,
- (unsigned long long)
- dccp_rsk(req)->dreq_iss);
+ (unsigned long long) dreq->dreq_iss);
goto drop;
}
+ if (dccp_parse_options(sk, dreq, skb))
+ goto drop;
+
child = inet_csk(sk)->icsk_af_ops->syn_recv_sock(sk, skb, req, NULL);
if (child == NULL)
goto listen_overflow;
- /* FIXME: deal with options */
-
inet_csk_reqsk_queue_unlink(sk, req, prev);
inet_csk_reqsk_queue_removed(sk, req);
inet_csk_reqsk_queue_add(sk, req, child);
EXPORT_SYMBOL_GPL(dccp_child_process);
-void dccp_reqsk_send_ack(struct sk_buff *skb, struct request_sock *rsk)
+void dccp_reqsk_send_ack(struct sock *sk, struct sk_buff *skb,
+ struct request_sock *rsk)
{
DCCP_BUG("DCCP-ACK packets are never sent in LISTEN/RESPOND state");
}
EXPORT_SYMBOL_GPL(dccp_reqsk_send_ack);
-void dccp_reqsk_init(struct request_sock *req, struct sk_buff *skb)
+int dccp_reqsk_init(struct request_sock *req,
+ struct dccp_sock const *dp, struct sk_buff const *skb)
{
- inet_rsk(req)->rmt_port = dccp_hdr(skb)->dccph_sport;
- inet_rsk(req)->acked = 0;
- req->rcv_wnd = sysctl_dccp_feat_sequence_window;
+ struct dccp_request_sock *dreq = dccp_rsk(req);
+
+ inet_rsk(req)->rmt_port = dccp_hdr(skb)->dccph_sport;
+ inet_rsk(req)->loc_port = dccp_hdr(skb)->dccph_dport;
+ inet_rsk(req)->acked = 0;
+ dreq->dreq_timestamp_echo = 0;
+
+ /* inherit feature negotiation options from listening socket */
+ return dccp_feat_clone_list(&dp->dccps_featneg, &dreq->dreq_featneg);
}
EXPORT_SYMBOL_GPL(dccp_reqsk_init);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff