3 files changed, 18 insertions, 3 deletions
diff --git a/include/net/codel.h b/include/net/codel.h
index a6e428f80135..5e8b181b76b8 100644
--- a/include/net/codel.h
+++ b/include/net/codel.h
@@ -102,6 +102,7 @@ static inline u32 codel_time_to_us(codel_time_t val)
  * @interval:	width of moving time window
  * @mtu:	device mtu, or minimal queue backlog in bytes.
  * @ecn:	is Explicit Congestion Notification enabled
+ * @ce_threshold_ect1: if ce_threshold only marks ECT(1) packets
  */
 struct codel_params {
 	codel_time_t	target;
@@ -109,6 +110,7 @@ struct codel_params {
 	codel_time_t	interval;
 	u32		mtu;
 	bool		ecn;
+	bool		ce_threshold_ect1;
 };
 
 /**
diff --git a/include/net/codel_impl.h b/include/net/codel_impl.h
index d289b91dcd65..7af2c3eb3c43 100644
--- a/include/net/codel_impl.h
+++ b/include/net/codel_impl.h
@@ -54,6 +54,7 @@ static void codel_params_init(struct codel_params *params)
 	params->interval = MS2TIME(100);
 	params->target = MS2TIME(5);
 	params->ce_threshold = CODEL_DISABLED_THRESHOLD;
+	params->ce_threshold_ect1 = false;
 	params->ecn = false;
 }
 
@@ -246,9 +247,20 @@ static struct sk_buff *codel_dequeue(void *ctx,
 						    vars->rec_inv_sqrt);
 	}
 end:
-	if (skb && codel_time_after(vars->ldelay, params->ce_threshold) &&
-	    INET_ECN_set_ce(skb))
-		stats->ce_mark++;
+	if (skb && codel_time_after(vars->ldelay, params->ce_threshold)) {
+		bool set_ce = true;
+
+		if (params->ce_threshold_ect1) {
+			/* Note: if skb_get_dsfield() returns -1, following
+			 * gives INET_ECN_MASK, which is != INET_ECN_ECT_1.
+			 */
+			u8 ecn = skb_get_dsfield(skb) & INET_ECN_MASK;
+
+			set_ce = (ecn == INET_ECN_ECT_1);
+		}
+		if (set_ce && INET_ECN_set_ce(skb))
+			stats->ce_mark++;
+	}
 	return skb;
 }
 
diff --git a/include/uapi/linux/pkt_sched.h b/include/uapi/linux/pkt_sched.h
index ec88590b3198..6be9a84cccfa 100644
--- a/include/uapi/linux/pkt_sched.h
+++ b/include/uapi/linux/pkt_sched.h
@@ -840,6 +840,7 @@ enum {
 	TCA_FQ_CODEL_CE_THRESHOLD,
 	TCA_FQ_CODEL_DROP_BATCH_SIZE,
 	TCA_FQ_CODEL_MEMORY_LIMIT,
+	TCA_FQ_CODEL_CE_THRESHOLD_ECT1,
 	__TCA_FQ_CODEL_MAX
 };