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[DCCP]: Generalize dccp_v4_send_reset

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Renaming it to dccp_send_reset and moving it from the ipv4 specific
code to the core dccp code.

This fixes some bugs in IPV6 where timers would send v4 resets, etc.

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 2006-03-20 19:25:24 -08:00 committed by David S. Miller
parent e55d912f5b
commit 017487d7d1
5 changed files with 28 additions and 38 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
net/dccp/dccp.h
View File

@ -235,9 +235,6 @@ extern void dccp_close(struct sock *sk, long timeout);
extern struct sk_buff *dccp_make_response(struct sock *sk, extern struct sk_buff *dccp_make_response(struct sock *sk,
struct dst_entry *dst, struct dst_entry *dst,
struct request_sock *req); struct request_sock *req);
extern struct sk_buff *dccp_make_reset(struct sock *sk,
struct dst_entry *dst,
enum dccp_reset_codes code);
extern int dccp_connect(struct sock *sk); extern int dccp_connect(struct sock *sk);
extern int dccp_disconnect(struct sock *sk, int flags); extern int dccp_disconnect(struct sock *sk, int flags);
@ -264,8 +261,7 @@ extern int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr,
extern int dccp_v4_checksum(const struct sk_buff *skb, extern int dccp_v4_checksum(const struct sk_buff *skb,
const __be32 saddr, const __be32 daddr); const __be32 saddr, const __be32 daddr);
extern int dccp_v4_send_reset(struct sock *sk, extern int dccp_send_reset(struct sock *sk, enum dccp_reset_codes code);
enum dccp_reset_codes code);
extern void dccp_send_close(struct sock *sk, const int active); extern void dccp_send_close(struct sock *sk, const int active);
extern int dccp_invalid_packet(struct sk_buff *skb); extern int dccp_invalid_packet(struct sk_buff *skb);

2
net/dccp/input.c
View File

@ -32,7 +32,7 @@ static void dccp_fin(struct sock *sk, struct sk_buff *skb)
static void dccp_rcv_close(struct sock *sk, struct sk_buff *skb) static void dccp_rcv_close(struct sock *sk, struct sk_buff *skb)
{ {
dccp_v4_send_reset(sk, DCCP_RESET_CODE_CLOSED); dccp_send_reset(sk, DCCP_RESET_CODE_CLOSED);
dccp_fin(sk, skb); dccp_fin(sk, skb);
dccp_set_state(sk, DCCP_CLOSED); dccp_set_state(sk, DCCP_CLOSED);
sk_wake_async(sk, 1, POLL_HUP); sk_wake_async(sk, 1, POLL_HUP);

26
net/dccp/ipv4.c
View File

@ -457,32 +457,6 @@ void dccp_v4_send_check(struct sock *sk, int len, struct sk_buff *skb)
EXPORT_SYMBOL_GPL(dccp_v4_send_check); EXPORT_SYMBOL_GPL(dccp_v4_send_check);
int dccp_v4_send_reset(struct sock *sk, enum dccp_reset_codes code)
{
struct sk_buff *skb;
/*
* FIXME: what if rebuild_header fails?
* Should we be doing a rebuild_header here?
*/
int err = inet_sk_rebuild_header(sk);
if (err != 0)
return err;
skb = dccp_make_reset(sk, sk->sk_dst_cache, code);
if (skb != NULL) {
const struct inet_sock *inet = inet_sk(sk);
memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
err = ip_build_and_send_pkt(skb, sk,
inet->saddr, inet->daddr, NULL);
if (err == NET_XMIT_CN)
err = 0;
}
return err;
}
static inline u64 dccp_v4_init_sequence(const struct sock *sk, static inline u64 dccp_v4_init_sequence(const struct sock *sk,
const struct sk_buff *skb) const struct sk_buff *skb)
{ {

30
net/dccp/output.c
View File

@ -323,8 +323,8 @@ struct sk_buff *dccp_make_response(struct sock *sk, struct dst_entry *dst,
EXPORT_SYMBOL_GPL(dccp_make_response); EXPORT_SYMBOL_GPL(dccp_make_response);
struct sk_buff *dccp_make_reset(struct sock *sk, struct dst_entry *dst, static struct sk_buff *dccp_make_reset(struct sock *sk, struct dst_entry *dst,
const enum dccp_reset_codes code) const enum dccp_reset_codes code)
{ {
struct dccp_hdr *dh; struct dccp_hdr *dh;
@ -366,14 +366,34 @@ struct sk_buff *dccp_make_reset(struct sock *sk, struct dst_entry *dst,
dccp_hdr_set_ack(dccp_hdr_ack_bits(skb), dp->dccps_gsr); dccp_hdr_set_ack(dccp_hdr_ack_bits(skb), dp->dccps_gsr);
dccp_hdr_reset(skb)->dccph_reset_code = code; 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); DCCP_INC_STATS(DCCP_MIB_OUTSEGS);
return skb; 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. * Do all connect socket setups that can be done AF independent.
*/ */

2
net/dccp/timer.c
View File

@ -31,7 +31,7 @@ static void dccp_write_err(struct sock *sk)
sk->sk_err = sk->sk_err_soft ? : ETIMEDOUT; sk->sk_err = sk->sk_err_soft ? : ETIMEDOUT;
sk->sk_error_report(sk); sk->sk_error_report(sk);
dccp_v4_send_reset(sk, DCCP_RESET_CODE_ABORTED); dccp_send_reset(sk, DCCP_RESET_CODE_ABORTED);
dccp_done(sk); dccp_done(sk);
DCCP_INC_STATS_BH(DCCP_MIB_ABORTONTIMEOUT); DCCP_INC_STATS_BH(DCCP_MIB_ABORTONTIMEOUT);
} }