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authorGerrit Renker <gerrit@erg.abdn.ac.uk>2007-09-26 10:30:05 -0300
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-10 16:52:40 -0700
commit08831700cc65f85a497d6b32b1c83ca84d71de4a (patch)
tree419a08b43e529f211dbdc7224283ed560334b4b3
parent53465eb4ab16660eab0a7be168a087a97172e650 (diff)
[DCCP]: Send Reset upon Sync in state REQUEST
This fixes the code to correspond to RFC 4340, 7.5.4, which states the exception that a Sync received in state REQUEST generates a Reset (not a SyncAck). To achieve this, only a small change is required. Since dccp_rcv_request_sent_state_process() already uses the correct Reset Code number 4 ("Packet Error"), we only need to shift the if-statement a few lines further down. (To test this case: replace DCCP_PKT_RESPONSE with DCCP_PKT_SYNC in dccp_make_response.) Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: Ian McDonald <ian.mcdonald@jandi.co.nz> Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
-rw-r--r--net/dccp/input.c8
1 files changed, 3 insertions, 5 deletions
diff --git a/net/dccp/input.c b/net/dccp/input.c
index cde0e704dfc..86ad3ba0649 100644
--- a/net/dccp/input.c
+++ b/net/dccp/input.c
@@ -540,11 +540,6 @@ int dccp_rcv_state_process(struct sock *sk, struct sk_buff *skb,
return 0;
}
- if (unlikely(dh->dccph_type == DCCP_PKT_SYNC)) {
- dccp_send_sync(sk, dcb->dccpd_seq, DCCP_PKT_SYNCACK);
- goto discard;
- }
-
switch (sk->sk_state) {
case DCCP_CLOSED:
dcb->dccpd_reset_code = DCCP_RESET_CODE_NO_CONNECTION;
@@ -575,6 +570,9 @@ int dccp_rcv_state_process(struct sock *sk, struct sk_buff *skb,
sk_wake_async(sk, 0, POLL_OUT);
break;
}
+ } else if (unlikely(dh->dccph_type == DCCP_PKT_SYNC)) {
+ dccp_send_sync(sk, dcb->dccpd_seq, DCCP_PKT_SYNCACK);
+ goto discard;
}
if (!queued) {