Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=ce865a61c810c971b47f57c729ec6e9b2d522d94
Commit: ce865a61c810c971b47f57c729ec6e9b2d522d94
Parent: d83bd95bf11444993b9c405b255ffa644c32d414
Author: Gerrit Renker <[EMAIL PROTECTED]>
AuthorDate: Sat Nov 24 22:14:15 2007 -0200
Committer: David S. Miller <[EMAIL PROTECTED]>
CommitDate: Mon Jan 28 14:55:02 2008 -0800
[DCCP]: Add support for abortive release
This continues from the previous patch and adds support for actively
aborting
a DCCP connection, using a Reset Code 2, "Aborted" to inform the peer of an
abortive release.
I have tried this in various client/server settings and it works as
expected.
Signed-off-by: Gerrit Renker <[EMAIL PROTECTED]>
Signed-off-by: Ian McDonald <[EMAIL PROTECTED]>
Signed-off-by: Arnaldo Carvalho de Melo <[EMAIL PROTECTED]>
Signed-off-by: David S. Miller <[EMAIL PROTECTED]>
---
net/dccp/proto.c | 15 +++++++++++++--
1 files changed, 13 insertions(+), 2 deletions(-)
diff --git a/net/dccp/proto.c b/net/dccp/proto.c
index 5f47b45..73006b7 100644
--- a/net/dccp/proto.c
+++ b/net/dccp/proto.c
@@ -276,6 +276,12 @@ static inline int dccp_listen_start(struct sock *sk, int
backlog)
return inet_csk_listen_start(sk, backlog);
}
+static inline int dccp_need_reset(int state)
+{
+ return state != DCCP_CLOSED && state != DCCP_LISTEN &&
+ state != DCCP_REQUESTING;
+}
+
int dccp_disconnect(struct sock *sk, int flags)
{
struct inet_connection_sock *icsk = inet_csk(sk);
@@ -286,10 +292,15 @@ int dccp_disconnect(struct sock *sk, int flags)
if (old_state != DCCP_CLOSED)
dccp_set_state(sk, DCCP_CLOSED);
- /* ABORT function of RFC793 */
+ /*
+ * This corresponds to the ABORT function of RFC793, sec. 3.8
+ * TCP uses a RST segment, DCCP a Reset packet with Code 2, "Aborted".
+ */
if (old_state == DCCP_LISTEN) {
inet_csk_listen_stop(sk);
- /* FIXME: do the active reset thing */
+ } else if (dccp_need_reset(old_state)) {
+ dccp_send_reset(sk, DCCP_RESET_CODE_ABORTED);
+ sk->sk_err = ECONNRESET;
} else if (old_state == DCCP_REQUESTING)
sk->sk_err = ECONNRESET;
-
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