[DCCP]: tidy up dccp_v{4,6}_conn_request
This is a code simplification to remove reduplicated code
by concentrating and abstracting shared code.
Detailed Changes:
diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c
index ed62026..d75ce8c 100644
--- a/net/dccp/ipv4.c
+++ b/net/dccp/ipv4.c
@@ -636,11 +636,8 @@
int dccp_v4_conn_request(struct sock *sk, struct sk_buff *skb)
{
struct inet_request_sock *ireq;
- struct dccp_sock dp;
struct request_sock *req;
struct dccp_request_sock *dreq;
- const __be32 saddr = skb->nh.iph->saddr;
- const __be32 daddr = skb->nh.iph->daddr;
const __be32 service = dccp_hdr_request(skb)->dccph_req_service;
struct dccp_skb_cb *dcb = DCCP_SKB_CB(skb);
__u8 reset_code = DCCP_RESET_CODE_TOO_BUSY;
@@ -680,14 +677,14 @@
if (dccp_parse_options(sk, skb))
goto drop_and_free;
- dccp_openreq_init(req, &dp, skb);
+ dccp_reqsk_init(req, skb);
if (security_inet_conn_request(sk, skb, req))
goto drop_and_free;
ireq = inet_rsk(req);
- ireq->loc_addr = daddr;
- ireq->rmt_addr = saddr;
+ 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;