aboutsummaryrefslogtreecommitdiff
path: root/net/dccp/input.c
diff options
context:
space:
mode:
Diffstat (limited to 'net/dccp/input.c')
-rw-r--r--net/dccp/input.c14
1 files changed, 11 insertions, 3 deletions
diff --git a/net/dccp/input.c b/net/dccp/input.c
index 6276b23fc20..cde0e704dfc 100644
--- a/net/dccp/input.c
+++ b/net/dccp/input.c
@@ -102,9 +102,6 @@ static int dccp_check_seqno(struct sock *sk, struct sk_buff *skb)
* Update S.GSR, S.SWL, S.SWH
* If P.type != Sync,
* Update S.GAR
- * Otherwise,
- * Send Sync packet acknowledging P.seqno
- * Drop packet and return
*/
lswl = dp->dccps_swl;
lawl = dp->dccps_awl;
@@ -135,6 +132,17 @@ static int dccp_check_seqno(struct sock *sk, struct sk_buff *skb)
: "exists",
(unsigned long long) lawl, (unsigned long long) ackno,
(unsigned long long) dp->dccps_awh);
+ /*
+ * Step 6: Check sequence numbers
+ * Otherwise,
+ * If P.type == Reset,
+ * Send Sync packet acknowledging S.GSR
+ * Otherwise,
+ * Send Sync packet acknowledging P.seqno
+ * Drop packet and return
+ */
+ if (dh->dccph_type == DCCP_PKT_RESET)
+ seqno = dp->dccps_gsr;
dccp_send_sync(sk, seqno, DCCP_PKT_SYNC);
return -1;
}