* 2 of the License, or (at your option) any later version.
*/
+#include <linux/config.h>
#include <linux/dccp.h>
#include <linux/kernel.h>
#include <linux/skbuff.h>
inet_csk_clear_xmit_timer(sk, ICSK_TIME_DACK);
}
-static void dccp_skb_entail(struct sock *sk, struct sk_buff *skb)
+static inline void dccp_skb_entail(struct sock *sk, struct sk_buff *skb)
{
skb_set_owner_w(skb, sk);
WARN_ON(sk->sk_send_head);
struct dccp_skb_cb *dcb = DCCP_SKB_CB(skb);
struct dccp_hdr *dh;
/* XXX For now we're using only 48 bits sequence numbers */
- const u32 dccp_header_size = sizeof(*dh) +
+ const int dccp_header_size = sizeof(*dh) +
sizeof(struct dccp_hdr_ext) +
dccp_packet_hdr_len(dcb->dccpd_type);
int err, set_ack = 1;
case DCCP_PKT_DATAACK:
break;
- case DCCP_PKT_REQUEST:
- set_ack = 0;
- /* fall through */
-
case DCCP_PKT_SYNC:
case DCCP_PKT_SYNCACK:
ackno = dcb->dccpd_seq;
}
dcb->dccpd_seq = dp->dccps_gss;
-
- if (dccp_insert_options(sk, skb)) {
- kfree_skb(skb);
- return -EPROTO;
- }
+ dccp_insert_options(sk, skb);
skb->h.raw = skb_push(skb, dccp_header_size);
dh = dccp_hdr(skb);
{
struct dccp_hdr *dh;
struct dccp_request_sock *dreq;
- const u32 dccp_header_size = sizeof(struct dccp_hdr) +
+ const int dccp_header_size = sizeof(struct dccp_hdr) +
sizeof(struct dccp_hdr_ext) +
sizeof(struct dccp_hdr_response);
- struct sk_buff *skb = sock_wmalloc(sk, sk->sk_prot->max_header, 1,
+ struct sk_buff *skb = sock_wmalloc(sk, MAX_HEADER + DCCP_MAX_OPT_LEN +
+ dccp_header_size, 1,
GFP_ATOMIC);
if (skb == NULL)
return NULL;
/* Reserve space for headers. */
- skb_reserve(skb, sk->sk_prot->max_header);
+ skb_reserve(skb, MAX_HEADER + DCCP_MAX_OPT_LEN + dccp_header_size);
skb->dst = dst_clone(dst);
skb->csum = 0;
dreq = dccp_rsk(req);
DCCP_SKB_CB(skb)->dccpd_type = DCCP_PKT_RESPONSE;
DCCP_SKB_CB(skb)->dccpd_seq = dreq->dreq_iss;
-
- if (dccp_insert_options(sk, skb)) {
- kfree_skb(skb);
- return NULL;
- }
+ dccp_insert_options(sk, skb);
skb->h.raw = skb_push(skb, dccp_header_size);
dccp_hdr_set_ack(dccp_hdr_ack_bits(skb), dreq->dreq_isr);
dccp_hdr_response(skb)->dccph_resp_service = dreq->dreq_service;
+ dh->dccph_checksum = dccp_v4_checksum(skb, inet_rsk(req)->loc_addr,
+ inet_rsk(req)->rmt_addr);
+
DCCP_INC_STATS(DCCP_MIB_OUTSEGS);
return skb;
}
EXPORT_SYMBOL_GPL(dccp_make_response);
-static struct sk_buff *dccp_make_reset(struct sock *sk, struct dst_entry *dst,
- const enum dccp_reset_codes code)
+struct sk_buff *dccp_make_reset(struct sock *sk, struct dst_entry *dst,
+ const enum dccp_reset_codes code)
{
struct dccp_hdr *dh;
struct dccp_sock *dp = dccp_sk(sk);
- const u32 dccp_header_size = sizeof(struct dccp_hdr) +
+ const int dccp_header_size = sizeof(struct dccp_hdr) +
sizeof(struct dccp_hdr_ext) +
sizeof(struct dccp_hdr_reset);
- struct sk_buff *skb = sock_wmalloc(sk, sk->sk_prot->max_header, 1,
+ struct sk_buff *skb = sock_wmalloc(sk, MAX_HEADER + DCCP_MAX_OPT_LEN +
+ dccp_header_size, 1,
GFP_ATOMIC);
if (skb == NULL)
return NULL;
/* Reserve space for headers. */
- skb_reserve(skb, sk->sk_prot->max_header);
+ skb_reserve(skb, MAX_HEADER + DCCP_MAX_OPT_LEN + dccp_header_size);
skb->dst = dst_clone(dst);
skb->csum = 0;
DCCP_SKB_CB(skb)->dccpd_reset_code = code;
DCCP_SKB_CB(skb)->dccpd_type = DCCP_PKT_RESET;
DCCP_SKB_CB(skb)->dccpd_seq = dp->dccps_gss;
-
- if (dccp_insert_options(sk, skb)) {
- kfree_skb(skb);
- return NULL;
- }
+ dccp_insert_options(sk, skb);
skb->h.raw = skb_push(skb, dccp_header_size);
dccp_hdr_set_ack(dccp_hdr_ack_bits(skb), dp->dccps_gsr);
dccp_hdr_reset(skb)->dccph_reset_code = code;
- inet_csk(sk)->icsk_af_ops->send_check(sk, skb->len, skb);
+
+ dh->dccph_checksum = dccp_v4_checksum(skb, inet_sk(sk)->saddr,
+ inet_sk(sk)->daddr);
DCCP_INC_STATS(DCCP_MIB_OUTSEGS);
return skb;
}
-int dccp_send_reset(struct sock *sk, enum dccp_reset_codes code)
-{
- /*
- * FIXME: what if rebuild_header fails?
- * Should we be doing a rebuild_header here?
- */
- int err = inet_sk_rebuild_header(sk);
-
- if (err == 0) {
- struct sk_buff *skb = dccp_make_reset(sk, sk->sk_dst_cache,
- code);
- if (skb != NULL) {
- memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
- err = inet_csk(sk)->icsk_af_ops->queue_xmit(skb, 0);
- if (err == NET_XMIT_CN)
- err = 0;
- }
- }
-
- return err;
-}
-
/*
* Do all connect socket setups that can be done AF independent.
*/
dccp_connect_init(sk);
- skb = alloc_skb(sk->sk_prot->max_header, sk->sk_allocation);
+ skb = alloc_skb(MAX_DCCP_HEADER + 15, sk->sk_allocation);
if (unlikely(skb == NULL))
return -ENOBUFS;
/* Reserve space for headers. */
- skb_reserve(skb, sk->sk_prot->max_header);
+ skb_reserve(skb, MAX_DCCP_HEADER);
DCCP_SKB_CB(skb)->dccpd_type = DCCP_PKT_REQUEST;
skb->csum = 0;
{
/* If we have been reset, we may not send again. */
if (sk->sk_state != DCCP_CLOSED) {
- struct sk_buff *skb = alloc_skb(sk->sk_prot->max_header,
- GFP_ATOMIC);
+ struct sk_buff *skb = alloc_skb(MAX_DCCP_HEADER, GFP_ATOMIC);
if (skb == NULL) {
inet_csk_schedule_ack(sk);
}
/* Reserve space for headers */
- skb_reserve(skb, sk->sk_prot->max_header);
+ skb_reserve(skb, MAX_DCCP_HEADER);
skb->csum = 0;
DCCP_SKB_CB(skb)->dccpd_type = DCCP_PKT_ACK;
dccp_transmit_skb(sk, skb);
* dccp_transmit_skb() will set the ownership to this
* sock.
*/
- struct sk_buff *skb = alloc_skb(sk->sk_prot->max_header, GFP_ATOMIC);
+ struct sk_buff *skb = alloc_skb(MAX_DCCP_HEADER, GFP_ATOMIC);
if (skb == NULL)
/* FIXME: how to make sure the sync is sent? */
return;
/* Reserve space for headers and prepare control bits. */
- skb_reserve(skb, sk->sk_prot->max_header);
+ skb_reserve(skb, MAX_DCCP_HEADER);
skb->csum = 0;
DCCP_SKB_CB(skb)->dccpd_type = pkt_type;
DCCP_SKB_CB(skb)->dccpd_seq = seq;
dccp_transmit_skb(sk, skb);
}
-EXPORT_SYMBOL_GPL(dccp_send_sync);
-
/*
* Send a DCCP_PKT_CLOSE/CLOSEREQ. The caller locks the socket for us. This
* cannot be allowed to fail queueing a DCCP_PKT_CLOSE/CLOSEREQ frame under
git://git.onelab.eu / linux-2.6.git / blobdiff