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[DCCP]: Introduce dccp_ipv4_af_ops

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And make the core DCCP code AF agnostic, just like TCP, now its time
to work on net/dccp/ipv6.c, we are close to the end!

Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arnaldo Carvalho de Melo
2005-12-13 23:16:16 -08:00
committed by David S. Miller
parent af05dc9394
commit 57cca05af1
5 changed files with 39 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files
net/dccp/output.c
+6 -8
View File
@@ -43,6 +43,7 @@ static int dccp_transmit_skb(struct sock *sk, struct sk_buff *skb)
{
if (likely(skb != NULL)) {
const struct inet_sock *inet = inet_sk(sk);
const struct inet_connection_sock *icsk = inet_csk(sk);
struct dccp_sock *dp = dccp_sk(sk);
struct dccp_skb_cb *dcb = DCCP_SKB_CB(skb);
struct dccp_hdr *dh;
@@ -108,8 +109,7 @@ static int dccp_transmit_skb(struct sock *sk, struct sk_buff *skb)
break;
}
dh->dccph_checksum = dccp_v4_checksum(skb, inet->saddr,
inet->daddr);
icsk->icsk_af_ops->send_check(sk, skb->len, skb);
if (set_ack)
dccp_event_ack_sent(sk);
@@ -117,7 +117,7 @@ static int dccp_transmit_skb(struct sock *sk, struct sk_buff *skb)
DCCP_INC_STATS(DCCP_MIB_OUTSEGS);
memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
err = ip_queue_xmit(skb, 0);
err = icsk->icsk_af_ops->queue_xmit(skb, 0);
if (err <= 0)
return err;
@@ -135,16 +135,14 @@ static int dccp_transmit_skb(struct sock *sk, struct sk_buff *skb)
unsigned int dccp_sync_mss(struct sock *sk, u32 pmtu)
{
struct dccp_sock *dp = dccp_sk(sk);
int mss_now;
/*
* FIXME: we really should be using the af_specific thing to support
* IPv6.
* mss_now = pmtu - tp->af_specific->net_header_len -
* sizeof(struct dccp_hdr) - sizeof(struct dccp_hdr_ext);
*/
mss_now = pmtu - sizeof(struct iphdr) - sizeof(struct dccp_hdr) -
sizeof(struct dccp_hdr_ext);
int mss_now = (pmtu - inet_csk(sk)->icsk_af_ops->net_header_len -
sizeof(struct dccp_hdr) - sizeof(struct dccp_hdr_ext));
/* Now subtract optional transport overhead */
mss_now -= dp->dccps_ext_header_len;
@@ -266,7 +264,7 @@ int dccp_write_xmit(struct sock *sk, struct sk_buff *skb, long *timeo)
int dccp_retransmit_skb(struct sock *sk, struct sk_buff *skb)
{
if (inet_sk_rebuild_header(sk) != 0)
if (inet_csk(sk)->icsk_af_ops->rebuild_header(sk) != 0)
return -EHOSTUNREACH; /* Routing failure or similar. */
return dccp_transmit_skb(sk, (skb_cloned(skb) ?