1 files changed, 9 insertions, 21 deletions

diff --git a/net/dccp/minisocks.c b/net/dccp/minisocks.c
index 128b089d3aef..d7041a0963af 100644
--- a/net/dccp/minisocks.c
+++ b/net/dccp/minisocks.c
@@ -121,30 +121,18 @@ struct sock *dccp_create_openreq_child(struct sock *sk,
                  *
                  *    Choose S.ISS (initial seqno) or set from Init Cookies
                  *    Initialize S.GAR := S.ISS
-                 *    Set S.ISR, S.GSR, S.SWL, S.SWH from packet or Init Cookies
-                 */
-                newdp->dccps_gar = newdp->dccps_iss = dreq->dreq_iss;
-                dccp_update_gss(newsk, dreq->dreq_iss);
-
-                newdp->dccps_isr = dreq->dreq_isr;
-                dccp_update_gsr(newsk, dreq->dreq_isr);
-
-                /*
-                 * SWL and AWL are initially adjusted so that they are not less than
-                 * the initial Sequence Numbers received and sent, respectively:
-                 *      SWL := max(GSR + 1 - floor(W/4), ISR),
-                 *      AWL := max(GSS - W' + 1, ISS).
-                 * These adjustments MUST be applied only at the beginning of the
-                 * connection.
+                 *    Set S.ISR, S.GSR from packet (or Init Cookies)
+                 *
+                 *    Setting AWL/AWH and SWL/SWH happens as part of the feature
+                 *    activation below, as these windows all depend on the local
+                 *    and remote Sequence Window feature values (7.5.2).
                  */
-                dccp_set_seqno(&newdp->dccps_swl,
-                               max48(newdp->dccps_swl, newdp->dccps_isr));
-                dccp_set_seqno(&newdp->dccps_awl,
-                               max48(newdp->dccps_awl, newdp->dccps_iss));
+                newdp->dccps_gss = newdp->dccps_iss = dreq->dreq_iss;
+                newdp->dccps_gar = newdp->dccps_iss;
+                newdp->dccps_gsr = newdp->dccps_isr = dreq->dreq_isr;
 
                 /*
-                 * Activate features after initialising the sequence numbers,
-                 * since CCID initialisation may depend on GSS, ISR, ISS etc.
+                 * Activate features: initialise CCIDs, sequence windows etc.
                  */
                 if (dccp_feat_activate_values(newsk, &dreq->dreq_featneg)) {
                         /* It is still raw copy of parent, so invalidate