octeontx2-pf: htb offload support for Round Robin scheduling

When multiple traffic flows reach Transmit level with the same
priority, with Round robin scheduling traffic flow with the highest
quantum value is picked. With this support, the user can add multiple
classes with the same priority and different quantum. This patch
does necessary changes to support the same.
Signed-off-by: Naveen Mamindlapalli <naveenm@marvell.com>
Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c

@@ -774,6 +774,7 @@ int otx2_txsch_alloc(struct otx2_nic *pfvf)
 				rsp->schq_list[lvl][schq];
 
 	pfvf->hw.txschq_link_cfg_lvl = rsp->link_cfg_lvl;
+	pfvf->hw.txschq_aggr_lvl_rr_prio = rsp->aggr_lvl_rr_prio;
 
 	return 0;
 }

drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h

@@ -224,6 +224,7 @@ struct otx2_hw {
 
 	/* NIX */
 	u8			txschq_link_cfg_lvl;
+	u8			txschq_aggr_lvl_rr_prio;
 	u16			txschq_list[NIX_TXSCH_LVL_CNT][MAX_TXSCHQ_PER_FUNC];
 	u16			matchall_ipolicer;
 	u32			dwrr_mtu;

drivers/net/ethernet/marvell/octeontx2/nic/qos.h

@@ -60,12 +60,15 @@ struct otx2_qos_node {
 	u64 ceil;
 	u32 classid;
 	u32 prio;
-	u16 schq; /* hw txschq */
+	u32 quantum;
+	/* hw txschq */
+	u16 schq;
 	u16 qid;
 	u16 prio_anchor;
 	u16 max_static_prio;
 	u16 child_dwrr_cnt;
 	u16 child_static_cnt;
+	u16 child_dwrr_prio;
 	u16 txschq_idx;			/* txschq allocation index */
 	u8 level;
 	bool is_static;