lede/target/linux/ipq806x/patches-5.4/999-07b-qca-nss-clients-qdisc-support.patch

--- a/include/net/sch_generic.h
+++ b/include/net/sch_generic.h
@@ -80,6 +80,7 @@ struct Qdisc {
 #define TCQ_F_INVISIBLE		0x80 /* invisible by default in dump */
 #define TCQ_F_NOLOCK		0x100 /* qdisc does not require locking */
 #define TCQ_F_OFFLOADED		0x200 /* qdisc is offloaded to HW */
+#define TCQ_F_NSS		0x1000 /* NSS qdisc flag. */
 	u32			limit;
 	const struct Qdisc_ops	*ops;
 	struct qdisc_size_table	__rcu *stab;
@@ -1342,4 +1343,9 @@ static inline void qdisc_synchronize(con
 		msleep(1);
 }
 
+/* QCA NSS Qdisc Support - Start */
+void qdisc_destroy(struct Qdisc *qdisc);
+void tcf_destroy_chain(struct tcf_proto __rcu **fl);
+/* QCA NSS Qdisc Support - End */
+
 #endif
--- a/include/uapi/linux/pkt_sched.h
+++ b/include/uapi/linux/pkt_sched.h
@@ -1183,4 +1183,248 @@ enum {
 
 #define TCA_TAPRIO_ATTR_MAX (__TCA_TAPRIO_ATTR_MAX - 1)
 
+/* QCA NSS Clients Support - Start */
+enum {
+	TCA_NSS_ACCEL_MODE_NSS_FW,
+	TCA_NSS_ACCEL_MODE_PPE,
+	TCA_NSS_ACCEL_MODE_MAX
+};
+
+/* NSSFIFO section */
+
+enum {
+	TCA_NSSFIFO_UNSPEC,
+	TCA_NSSFIFO_PARMS,
+	__TCA_NSSFIFO_MAX
+};
+
+#define TCA_NSSFIFO_MAX	(__TCA_NSSFIFO_MAX - 1)
+
+struct tc_nssfifo_qopt {
+	__u32	limit;		/* Queue length: bytes for bfifo, packets for pfifo */
+	__u8	set_default;	/* Sets qdisc to be the default qdisc for enqueue */
+	__u8	accel_mode;	/* Dictates which data plane offloads the qdisc */
+};
+
+/* NSSWRED section */
+
+enum {
+	TCA_NSSWRED_UNSPEC,
+	TCA_NSSWRED_PARMS,
+	__TCA_NSSWRED_MAX
+};
+
+#define TCA_NSSWRED_MAX (__TCA_NSSWRED_MAX - 1)
+#define NSSWRED_CLASS_MAX 6
+struct tc_red_alg_parameter {
+	__u32	min;	/* qlen_avg < min: pkts are all enqueued */
+	__u32	max;	/* qlen_avg > max: pkts are all dropped */
+	__u32	probability;/* Drop probability at qlen_avg = max */
+	__u32	exp_weight_factor;/* exp_weight_factor for calculate qlen_avg */
+};
+
+struct tc_nsswred_traffic_class {
+	__u32 limit;			/* Queue length */
+	__u32 weight_mode_value;	/* Weight mode value */
+	struct tc_red_alg_parameter rap;/* Parameters for RED alg */
+};
+
+/*
+ * Weight modes for WRED
+ */
+enum tc_nsswred_weight_modes {
+	TC_NSSWRED_WEIGHT_MODE_DSCP = 0,/* Weight mode is DSCP */
+	TC_NSSWRED_WEIGHT_MODES,	/* Must be last */
+};
+
+struct tc_nsswred_qopt {
+	__u32	limit;			/* Queue length */
+	enum tc_nsswred_weight_modes weight_mode;
+					/* Weight mode */
+	__u32	traffic_classes;	/* How many traffic classes: DPs */
+	__u32	def_traffic_class;	/* Default traffic if no match: def_DP */
+	__u32	traffic_id;		/* The traffic id to be configured: DP */
+	__u32	weight_mode_value;	/* Weight mode value */
+	struct tc_red_alg_parameter rap;/* RED algorithm parameters */
+	struct tc_nsswred_traffic_class tntc[NSSWRED_CLASS_MAX];
+					/* Traffic settings for dumpping */
+	__u8	ecn;			/* Setting ECN bit or dropping */
+	__u8	set_default;		/* Sets qdisc to be the default for enqueue */
+	__u8	accel_mode;		/* Dictates which data plane offloads the qdisc */
+};
+
+/* NSSCODEL section */
+
+enum {
+	TCA_NSSCODEL_UNSPEC,
+	TCA_NSSCODEL_PARMS,
+	__TCA_NSSCODEL_MAX
+};
+
+#define TCA_NSSCODEL_MAX	(__TCA_NSSCODEL_MAX - 1)
+
+struct tc_nsscodel_qopt {
+	__u32	target;		/* Acceptable queueing delay */
+	__u32	limit;		/* Max number of packets that can be held in the queue */
+	__u32	interval;	/* Monitoring interval */
+	__u32	flows;		/* Number of flow buckets */
+	__u32	quantum;	/* Weight (in bytes) used for DRR of flow buckets */
+	__u8	ecn;		/* 0 - disable ECN, 1 - enable ECN */
+	__u8	set_default;	/* Sets qdisc to be the default qdisc for enqueue */
+	__u8	accel_mode;	/* Dictates which data plane offloads the qdisc */
+};
+
+struct tc_nsscodel_xstats {
+	__u32 peak_queue_delay;	/* Peak delay experienced by a dequeued packet */
+	__u32 peak_drop_delay;	/* Peak delay experienced by a dropped packet */
+};
+
+/* NSSFQ_CODEL section */
+
+struct tc_nssfq_codel_xstats {
+	__u32 new_flow_count;	/* Total number of new flows seen */
+	__u32 new_flows_len;	/* Current number of new flows */
+	__u32 old_flows_len;	/* Current number of old flows */
+	__u32 ecn_mark;		/* Number of packets marked with ECN */
+	__u32 drop_overlimit;	/* Number of packets dropped due to overlimit */
+	__u32 maxpacket;	/* The largest packet seen so far in the queue */
+};
+
+/* NSSTBL section */
+
+enum {
+	TCA_NSSTBL_UNSPEC,
+	TCA_NSSTBL_PARMS,
+	__TCA_NSSTBL_MAX
+};
+
+#define TCA_NSSTBL_MAX	(__TCA_NSSTBL_MAX - 1)
+
+struct tc_nsstbl_qopt {
+	__u32	burst;		/* Maximum burst size */
+	__u32	rate;		/* Limiting rate of TBF */
+	__u32	peakrate;	/* Maximum rate at which TBF is allowed to send */
+	__u32	mtu;		/* Max size of packet, or minumim burst size */
+	__u8	accel_mode;	/* Dictates which data plane offloads the qdisc */
+};
+
+/* NSSPRIO section */
+
+#define TCA_NSSPRIO_MAX_BANDS 256
+
+enum {
+	TCA_NSSPRIO_UNSPEC,
+	TCA_NSSPRIO_PARMS,
+	__TCA_NSSPRIO_MAX
+};
+
+#define TCA_NSSPRIO_MAX	(__TCA_NSSPRIO_MAX - 1)
+
+struct tc_nssprio_qopt {
+	__u32	bands;		/* Number of bands */
+	__u8	accel_mode;	/* Dictates which data plane offloads the qdisc */
+};
+
+/* NSSBF section */
+
+enum {
+	TCA_NSSBF_UNSPEC,
+	TCA_NSSBF_CLASS_PARMS,
+	TCA_NSSBF_QDISC_PARMS,
+	__TCA_NSSBF_MAX
+};
+
+#define TCA_NSSBF_MAX	(__TCA_NSSBF_MAX - 1)
+
+struct tc_nssbf_class_qopt {
+	__u32	burst;		/* Maximum burst size */
+	__u32	rate;		/* Allowed bandwidth for this class */
+	__u32	mtu;		/* MTU of the associated interface */
+	__u32	quantum;	/* Quantum allocation for DRR */
+};
+
+struct tc_nssbf_qopt {
+	__u16	defcls;		/* Default class value */
+	__u8	accel_mode;	/* Dictates which data plane offloads the qdisc */
+};
+
+/* NSSWRR section */
+
+enum {
+	TCA_NSSWRR_UNSPEC,
+	TCA_NSSWRR_CLASS_PARMS,
+	TCA_NSSWRR_QDISC_PARMS,
+	__TCA_NSSWRR_MAX
+};
+
+#define TCA_NSSWRR_MAX	(__TCA_NSSWRR_MAX - 1)
+
+struct tc_nsswrr_class_qopt {
+	__u32	quantum;	/* Weight associated to this class */
+};
+
+struct tc_nsswrr_qopt {
+	__u8	accel_mode;	/* Dictates which data plane offloads the qdisc */
+};
+
+/* NSSWFQ section */
+
+enum {
+	TCA_NSSWFQ_UNSPEC,
+	TCA_NSSWFQ_CLASS_PARMS,
+	TCA_NSSWFQ_QDISC_PARMS,
+	__TCA_NSSWFQ_MAX
+};
+
+#define TCA_NSSWFQ_MAX	(__TCA_NSSWFQ_MAX - 1)
+
+struct tc_nsswfq_class_qopt {
+	__u32	quantum;	/* Weight associated to this class */
+};
+
+struct tc_nsswfq_qopt {
+	__u8	accel_mode;	/* Dictates which data plane offloads the qdisc */
+};
+
+/* NSSHTB section */
+
+enum {
+	TCA_NSSHTB_UNSPEC,
+	TCA_NSSHTB_CLASS_PARMS,
+	TCA_NSSHTB_QDISC_PARMS,
+	__TCA_NSSHTB_MAX
+};
+
+#define TCA_NSSHTB_MAX	(__TCA_NSSHTB_MAX - 1)
+
+struct tc_nsshtb_class_qopt {
+	__u32	burst;		/* Allowed burst size */
+	__u32	rate;		/* Allowed bandwidth for this class */
+	__u32	cburst;		/* Maximum burst size */
+	__u32	crate;		/* Maximum bandwidth for this class */
+	__u32	quantum;	/* Quantum allocation for DRR */
+	__u32	priority;	/* Priority value associated with this class */
+	__u32	overhead;	/* Overhead in bytes per packet */
+};
+
+struct tc_nsshtb_qopt {
+	__u32	r2q;		/* Rate to quantum ratio */
+	__u8	accel_mode;	/* Dictates which data plane offloads the qdisc */
+};
+
+/* NSSBLACKHOLE section */
+
+enum {
+	TCA_NSSBLACKHOLE_UNSPEC,
+	TCA_NSSBLACKHOLE_PARMS,
+	__TCA_NSSBLACKHOLE_MAX
+};
+
+#define TCA_NSSBLACKHOLE_MAX	(__TCA_NSSBLACKHOLE_MAX - 1)
+
+struct tc_nssblackhole_qopt {
+	__u8	set_default;	/* Sets qdisc to be the default qdisc for enqueue */
+	__u8	accel_mode;	/* Dictates which data plane offloads the qdisc */
+};
+/* QCA NSS Clients Support - End */
 #endif
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -2319,4 +2319,26 @@ static int __init pktsched_init(void)
 	return 0;
 }
 
+/* QCA NSS Qdisc Support - Start */
+bool tcf_destroy(struct tcf_proto *tp, bool force)
+{
+	tp->ops->destroy(tp, force, NULL);
+	module_put(tp->ops->owner);
+	kfree_rcu(tp, rcu);
+
+	return true;
+}
+
+void tcf_destroy_chain(struct tcf_proto __rcu **fl)
+{
+	struct tcf_proto *tp;
+
+	while ((tp = rtnl_dereference(*fl)) != NULL) {
+		RCU_INIT_POINTER(*fl, tp->next);
+		tcf_destroy(tp, true);
+	}
+}
+EXPORT_SYMBOL(tcf_destroy_chain);
+/* QCA NSS Qdisc Support - End */
+
 subsys_initcall(pktsched_init);
--- a/net/sched/sch_generic.c
+++ b/net/sched/sch_generic.c
@@ -767,7 +767,7 @@ static void qdisc_free_cb(struct rcu_hea
 	qdisc_free(q);
 }
 
-static void qdisc_destroy(struct Qdisc *qdisc)
+void qdisc_destroy(struct Qdisc *qdisc)
 {
 	const struct Qdisc_ops  *ops = qdisc->ops;
 	struct sk_buff *skb, *tmp;
@@ -798,6 +798,7 @@ static void qdisc_destroy(struct Qdisc *
 
 	call_rcu(&qdisc->rcu, qdisc_free_cb);
 }
+EXPORT_SYMBOL(qdisc_destroy);
 
 void qdisc_put(struct Qdisc *qdisc)
 {