[DCCP]: Introduce a consistent naming scheme for sysctls

In order to make their function clearer and obtain a consistent naming
scheme to identify sysctls, all existing DCCP sysctls have been prefixed
with `sysctl_dccp', following the same convention as used by TCP.

Feature-specific sysctls retain the `feat' in the middle, although the
`default' has been dropped, since it is obvious from use.

Also removed a duplicate `dccp_feat_default_sequence_window' in ipv4.c.
Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>

net/dccp/dccp.h

@@ -68,12 +68,12 @@ extern void dccp_time_wait(struct sock *sk, int state, int timeo);
 extern int  sysctl_dccp_request_retries;
 extern int  sysctl_dccp_retries1;
 extern int  sysctl_dccp_retries2;
-extern int  dccp_feat_default_sequence_window;
-extern int  dccp_feat_default_rx_ccid;
-extern int  dccp_feat_default_tx_ccid;
-extern int  dccp_feat_default_ack_ratio;
-extern int  dccp_feat_default_send_ack_vector;
-extern int  dccp_feat_default_send_ndp_count;
+extern int  sysctl_dccp_feat_sequence_window;
+extern int  sysctl_dccp_feat_rx_ccid;
+extern int  sysctl_dccp_feat_tx_ccid;
+extern int  sysctl_dccp_feat_ack_ratio;
+extern int  sysctl_dccp_feat_send_ack_vector;
+extern int  sysctl_dccp_feat_send_ndp_count;
 
 /* is seq1 < seq2 ? */
 static inline int before48(const u64 seq1, const u64 seq2)

net/dccp/ipv4.c

@@ -651,7 +651,6 @@ int dccp_v4_conn_request(struct sock *sk, struct sk_buff *skb)
 	ireq = inet_rsk(req);
 	ireq->loc_addr = skb->nh.iph->daddr;
 	ireq->rmt_addr = skb->nh.iph->saddr;
-	req->rcv_wnd	= dccp_feat_default_sequence_window;
 	ireq->opt	= NULL;
 
 	/* 

net/dccp/minisocks.c

@@ -300,7 +300,7 @@ void dccp_reqsk_init(struct request_sock *req, struct sk_buff *skb)
 {
 	inet_rsk(req)->rmt_port = dccp_hdr(skb)->dccph_sport;
 	inet_rsk(req)->acked	= 0;
-	req->rcv_wnd		= dccp_feat_default_sequence_window;
+	req->rcv_wnd		= sysctl_dccp_feat_sequence_window;
 }
 
 EXPORT_SYMBOL_GPL(dccp_reqsk_init);

net/dccp/options.c

@@ -22,23 +22,23 @@
 #include "dccp.h"
 #include "feat.h"
 
-int dccp_feat_default_sequence_window = DCCPF_INITIAL_SEQUENCE_WINDOW;
-int dccp_feat_default_rx_ccid	      = DCCPF_INITIAL_CCID;
-int dccp_feat_default_tx_ccid	      = DCCPF_INITIAL_CCID;
-int dccp_feat_default_ack_ratio	      = DCCPF_INITIAL_ACK_RATIO;
-int dccp_feat_default_send_ack_vector = DCCPF_INITIAL_SEND_ACK_VECTOR;
-int dccp_feat_default_send_ndp_count  = DCCPF_INITIAL_SEND_NDP_COUNT;
+int sysctl_dccp_feat_sequence_window = DCCPF_INITIAL_SEQUENCE_WINDOW;
+int sysctl_dccp_feat_rx_ccid	      = DCCPF_INITIAL_CCID;
+int sysctl_dccp_feat_tx_ccid	      = DCCPF_INITIAL_CCID;
+int sysctl_dccp_feat_ack_ratio	      = DCCPF_INITIAL_ACK_RATIO;
+int sysctl_dccp_feat_send_ack_vector = DCCPF_INITIAL_SEND_ACK_VECTOR;
+int sysctl_dccp_feat_send_ndp_count  = DCCPF_INITIAL_SEND_NDP_COUNT;
 
-EXPORT_SYMBOL_GPL(dccp_feat_default_sequence_window);
+EXPORT_SYMBOL_GPL(sysctl_dccp_feat_sequence_window);
 
 void dccp_minisock_init(struct dccp_minisock *dmsk)
 {
-	dmsk->dccpms_sequence_window = dccp_feat_default_sequence_window;
-	dmsk->dccpms_rx_ccid	     = dccp_feat_default_rx_ccid;
-	dmsk->dccpms_tx_ccid	     = dccp_feat_default_tx_ccid;
-	dmsk->dccpms_ack_ratio	     = dccp_feat_default_ack_ratio;
-	dmsk->dccpms_send_ack_vector = dccp_feat_default_send_ack_vector;
-	dmsk->dccpms_send_ndp_count  = dccp_feat_default_send_ndp_count;
+	dmsk->dccpms_sequence_window = sysctl_dccp_feat_sequence_window;
+	dmsk->dccpms_rx_ccid	     = sysctl_dccp_feat_rx_ccid;
+	dmsk->dccpms_tx_ccid	     = sysctl_dccp_feat_tx_ccid;
+	dmsk->dccpms_ack_ratio	     = sysctl_dccp_feat_ack_ratio;
+	dmsk->dccpms_send_ack_vector = sysctl_dccp_feat_send_ack_vector;
+	dmsk->dccpms_send_ndp_count  = sysctl_dccp_feat_send_ndp_count;
 }
 
 static u32 dccp_decode_value_var(const unsigned char *bf, const u8 len)

net/dccp/sysctl.c

@@ -22,48 +22,48 @@ static struct ctl_table dccp_default_table[] = {
 	{
 		.ctl_name	= NET_DCCP_DEFAULT_SEQ_WINDOW,
 		.procname	= "seq_window",
-		.data		= &dccp_feat_default_sequence_window,
-		.maxlen		= sizeof(dccp_feat_default_sequence_window),
+		.data		= &sysctl_dccp_feat_sequence_window,
+		.maxlen		= sizeof(sysctl_dccp_feat_sequence_window),
 		.mode		= 0644,
 		.proc_handler	= proc_dointvec,
 	},
 	{
 		.ctl_name	= NET_DCCP_DEFAULT_RX_CCID,
 		.procname	= "rx_ccid",
-		.data		= &dccp_feat_default_rx_ccid,
-		.maxlen		= sizeof(dccp_feat_default_rx_ccid),
+		.data		= &sysctl_dccp_feat_rx_ccid,
+		.maxlen		= sizeof(sysctl_dccp_feat_rx_ccid),
 		.mode		= 0644,
 		.proc_handler	= proc_dointvec,
 	},
 	{
 		.ctl_name	= NET_DCCP_DEFAULT_TX_CCID,
 		.procname	= "tx_ccid",
-		.data		= &dccp_feat_default_tx_ccid,
-		.maxlen		= sizeof(dccp_feat_default_tx_ccid),
+		.data		= &sysctl_dccp_feat_tx_ccid,
+		.maxlen		= sizeof(sysctl_dccp_feat_tx_ccid),
 		.mode		= 0644,
 		.proc_handler	= proc_dointvec,
 	},
 	{
 		.ctl_name	= NET_DCCP_DEFAULT_ACK_RATIO,
 		.procname	= "ack_ratio",
-		.data		= &dccp_feat_default_ack_ratio,
-		.maxlen		= sizeof(dccp_feat_default_ack_ratio),
+		.data		= &sysctl_dccp_feat_ack_ratio,
+		.maxlen		= sizeof(sysctl_dccp_feat_ack_ratio),
 		.mode		= 0644,
 		.proc_handler	= proc_dointvec,
 	},
 	{
 		.ctl_name	= NET_DCCP_DEFAULT_SEND_ACKVEC,
 		.procname	= "send_ackvec",
-		.data		= &dccp_feat_default_send_ack_vector,
-		.maxlen		= sizeof(dccp_feat_default_send_ack_vector),
+		.data		= &sysctl_dccp_feat_send_ack_vector,
+		.maxlen		= sizeof(sysctl_dccp_feat_send_ack_vector),
 		.mode		= 0644,
 		.proc_handler	= proc_dointvec,
 	},
 	{
 		.ctl_name	= NET_DCCP_DEFAULT_SEND_NDP,
 		.procname	= "send_ndp",
-		.data		= &dccp_feat_default_send_ndp_count,
-		.maxlen		= sizeof(dccp_feat_default_send_ndp_count),
+		.data		= &sysctl_dccp_feat_send_ndp_count,
+		.maxlen		= sizeof(sysctl_dccp_feat_send_ndp_count),
 		.mode		= 0644,
 		.proc_handler	= proc_dointvec,
 	},