bnxt_en: Refactor RSS capability fields

Add a new rss_cap field in the per device struct bnxt and move all
the RSS capability fields there.  It will be easier to add new RSS
capabilities for the new P7 chips.
Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Link: https://lore.kernel.org/r/20231201223924.26955-7-michael.chan@broadcom.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/broadcom/bnxt/bnxt.c

@@ -4268,7 +4268,7 @@ static int bnxt_alloc_vnic_attributes(struct bnxt *bp)
 			goto out;
 		}
 vnic_skip_grps:
-		if ((bp->flags & BNXT_FLAG_NEW_RSS_CAP) &&
+		if ((bp->rss_cap & BNXT_RSS_CAP_NEW_RSS_CAP) &&
 		    !(vnic->flags & BNXT_VNIC_RSS_FLAG))
 			continue;
 
@@ -5765,7 +5765,8 @@ static int bnxt_hwrm_vnic_qcaps(struct bnxt *bp)
 	int rc;
 
 	bp->hw_ring_stats_size = sizeof(struct ctx_hw_stats);
-	bp->flags &= ~(BNXT_FLAG_NEW_RSS_CAP | BNXT_FLAG_ROCE_MIRROR_CAP);
+	bp->flags &= ~BNXT_FLAG_ROCE_MIRROR_CAP;
+	bp->rss_cap &= ~BNXT_RSS_CAP_NEW_RSS_CAP;
 	if (bp->hwrm_spec_code < 0x10600)
 		return 0;
 
@@ -5780,7 +5781,7 @@ static int bnxt_hwrm_vnic_qcaps(struct bnxt *bp)
 
 		if (!(bp->flags & BNXT_FLAG_CHIP_P5_PLUS) &&
 		    (flags & VNIC_QCAPS_RESP_FLAGS_RSS_DFLT_CR_CAP))
-			bp->flags |= BNXT_FLAG_NEW_RSS_CAP;
+			bp->rss_cap |= BNXT_RSS_CAP_NEW_RSS_CAP;
 		if (flags &
 		    VNIC_QCAPS_RESP_FLAGS_ROCE_MIRRORING_CAPABLE_VNIC_CAP)
 			bp->flags |= BNXT_FLAG_ROCE_MIRROR_CAP;
@@ -5793,7 +5794,7 @@ static int bnxt_hwrm_vnic_qcaps(struct bnxt *bp)
 		     !(bp->fw_cap & BNXT_FW_CAP_EXT_HW_STATS_SUPPORTED)))
 			bp->fw_cap |= BNXT_FW_CAP_VLAN_RX_STRIP;
 		if (flags & VNIC_QCAPS_RESP_FLAGS_RSS_HASH_TYPE_DELTA_CAP)
-			bp->fw_cap |= BNXT_FW_CAP_RSS_HASH_TYPE_DELTA;
+			bp->rss_cap |= BNXT_RSS_CAP_RSS_HASH_TYPE_DELTA;
 		bp->max_tpa_v2 = le16_to_cpu(resp->max_aggs_supported);
 		if (bp->max_tpa_v2) {
 			if (BNXT_CHIP_P5(bp))
@@ -6456,7 +6457,7 @@ __bnxt_hwrm_reserve_pf_rings(struct bnxt *bp, int tx_rings, int rx_rings,
 			req->num_cmpl_rings = cpu_to_le16(cp_rings);
 			req->num_hw_ring_grps = cpu_to_le16(ring_grps);
 			req->num_rsscos_ctxs = cpu_to_le16(1);
-			if (!(bp->flags & BNXT_FLAG_NEW_RSS_CAP) &&
+			if (!(bp->rss_cap & BNXT_RSS_CAP_NEW_RSS_CAP) &&
 			    bnxt_rfs_supported(bp))
 				req->num_rsscos_ctxs =
 					cpu_to_le16(ring_grps + 1);
@@ -9133,7 +9134,7 @@ static int bnxt_alloc_rfs_vnics(struct bnxt *bp)
 
 		vnic = &bp->vnic_info[vnic_id];
 		vnic->flags |= BNXT_VNIC_RFS_FLAG;
-		if (bp->flags & BNXT_FLAG_NEW_RSS_CAP)
+		if (bp->rss_cap & BNXT_RSS_CAP_NEW_RSS_CAP)
 			vnic->flags |= BNXT_VNIC_RFS_NEW_RSS_FLAG;
 		rc = bnxt_hwrm_vnic_alloc(bp, vnic_id, ring_id, 1);
 		if (rc) {
@@ -9227,7 +9228,7 @@ static int bnxt_init_chip(struct bnxt *bp, bool irq_re_init)
 	rc = bnxt_setup_vnic(bp, 0);
 	if (rc)
 		goto err_out;
-	if (bp->fw_cap & BNXT_FW_CAP_RSS_HASH_TYPE_DELTA)
+	if (bp->rss_cap & BNXT_RSS_CAP_RSS_HASH_TYPE_DELTA)
 		bnxt_hwrm_update_rss_hash_cfg(bp);
 
 	if (bp->flags & BNXT_FLAG_RFS) {
@@ -11555,7 +11556,7 @@ static bool bnxt_rfs_supported(struct bnxt *bp)
 		return false;
 	if (BNXT_PF(bp) && !BNXT_CHIP_TYPE_NITRO_A0(bp))
 		return true;
-	if (bp->flags & BNXT_FLAG_NEW_RSS_CAP)
+	if (bp->rss_cap & BNXT_RSS_CAP_NEW_RSS_CAP)
 		return true;
 	return false;
 }
@@ -11576,7 +11577,7 @@ static bool bnxt_rfs_capable(struct bnxt *bp)
 	max_rss_ctxs = bnxt_get_max_func_rss_ctxs(bp);
 
 	/* RSS contexts not a limiting factor */
-	if (bp->flags & BNXT_FLAG_NEW_RSS_CAP)
+	if (bp->rss_cap & BNXT_RSS_CAP_NEW_RSS_CAP)
 		max_rss_ctxs = max_vnics;
 	if (vnics > max_vnics || vnics > max_rss_ctxs) {
 		if (bp->rx_nr_rings > 1)
@@ -12697,15 +12698,15 @@ static int bnxt_fw_init_one_p2(struct bnxt *bp)
 
 static void bnxt_set_dflt_rss_hash_type(struct bnxt *bp)
 {
-	bp->flags &= ~BNXT_FLAG_UDP_RSS_CAP;
+	bp->rss_cap &= ~BNXT_RSS_CAP_UDP_RSS_CAP;
 	bp->rss_hash_cfg = VNIC_RSS_CFG_REQ_HASH_TYPE_IPV4 |
 			   VNIC_RSS_CFG_REQ_HASH_TYPE_TCP_IPV4 |
 			   VNIC_RSS_CFG_REQ_HASH_TYPE_IPV6 |
 			   VNIC_RSS_CFG_REQ_HASH_TYPE_TCP_IPV6;
-	if (bp->fw_cap & BNXT_FW_CAP_RSS_HASH_TYPE_DELTA)
+	if (bp->rss_cap & BNXT_RSS_CAP_RSS_HASH_TYPE_DELTA)
 		bp->rss_hash_delta = bp->rss_hash_cfg;
 	if (BNXT_CHIP_P4_PLUS(bp) && bp->hwrm_spec_code >= 0x10501) {
-		bp->flags |= BNXT_FLAG_UDP_RSS_CAP;
+		bp->rss_cap |= BNXT_RSS_CAP_UDP_RSS_CAP;
 		bp->rss_hash_cfg |= VNIC_RSS_CFG_REQ_HASH_TYPE_UDP_IPV4 |
 				    VNIC_RSS_CFG_REQ_HASH_TYPE_UDP_IPV6;
 	}

drivers/net/ethernet/broadcom/bnxt/bnxt.h

@@ -1900,8 +1900,6 @@ struct bnxt {
 	#define BNXT_FLAG_RFS		0x100
 	#define BNXT_FLAG_SHARED_RINGS	0x200
 	#define BNXT_FLAG_PORT_STATS	0x400
-	#define BNXT_FLAG_UDP_RSS_CAP	0x800
-	#define BNXT_FLAG_NEW_RSS_CAP	0x2000
 	#define BNXT_FLAG_WOL_CAP	0x4000
 	#define BNXT_FLAG_ROCEV1_CAP	0x8000
 	#define BNXT_FLAG_ROCEV2_CAP	0x10000
@@ -2021,6 +2019,10 @@ struct bnxt {
 	u16			rss_indir_tbl_entries;
 	u32			rss_hash_cfg;
 	u32			rss_hash_delta;
+	u32			rss_cap;
+#define BNXT_RSS_CAP_RSS_HASH_TYPE_DELTA	BIT(0)
+#define BNXT_RSS_CAP_UDP_RSS_CAP		BIT(1)
+#define BNXT_RSS_CAP_NEW_RSS_CAP		BIT(2)
 
 	u16			max_mtu;
 	u8			max_tc;
@@ -2086,7 +2088,6 @@ struct bnxt {
 	#define BNXT_FW_CAP_CFA_RFS_RING_TBL_IDX_V2	BIT_ULL(16)
 	#define BNXT_FW_CAP_PCIE_STATS_SUPPORTED	BIT_ULL(17)
 	#define BNXT_FW_CAP_EXT_STATS_SUPPORTED		BIT_ULL(18)
-	#define BNXT_FW_CAP_RSS_HASH_TYPE_DELTA		BIT_ULL(19)
 	#define BNXT_FW_CAP_ERR_RECOVER_RELOAD		BIT_ULL(20)
 	#define BNXT_FW_CAP_HOT_RESET			BIT_ULL(21)
 	#define BNXT_FW_CAP_PTP_RTC			BIT_ULL(22)

drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c

@@ -1203,7 +1203,7 @@ static int bnxt_srxfh(struct bnxt *bp, struct ethtool_rxnfc *cmd)
 		if (tuple == 4)
 			rss_hash_cfg |= VNIC_RSS_CFG_REQ_HASH_TYPE_TCP_IPV4;
 	} else if (cmd->flow_type == UDP_V4_FLOW) {
-		if (tuple == 4 && !(bp->flags & BNXT_FLAG_UDP_RSS_CAP))
+		if (tuple == 4 && !(bp->rss_cap & BNXT_RSS_CAP_UDP_RSS_CAP))
 			return -EINVAL;
 		rss_hash_cfg &= ~VNIC_RSS_CFG_REQ_HASH_TYPE_UDP_IPV4;
 		if (tuple == 4)
@@ -1213,7 +1213,7 @@ static int bnxt_srxfh(struct bnxt *bp, struct ethtool_rxnfc *cmd)
 		if (tuple == 4)
 			rss_hash_cfg |= VNIC_RSS_CFG_REQ_HASH_TYPE_TCP_IPV6;
 	} else if (cmd->flow_type == UDP_V6_FLOW) {
-		if (tuple == 4 && !(bp->flags & BNXT_FLAG_UDP_RSS_CAP))
+		if (tuple == 4 && !(bp->rss_cap & BNXT_RSS_CAP_UDP_RSS_CAP))
 			return -EINVAL;
 		rss_hash_cfg &= ~VNIC_RSS_CFG_REQ_HASH_TYPE_UDP_IPV6;
 		if (tuple == 4)
@@ -1253,7 +1253,7 @@ static int bnxt_srxfh(struct bnxt *bp, struct ethtool_rxnfc *cmd)
 	if (bp->rss_hash_cfg == rss_hash_cfg)
 		return 0;
 
-	if (bp->fw_cap & BNXT_FW_CAP_RSS_HASH_TYPE_DELTA)
+	if (bp->rss_cap & BNXT_RSS_CAP_RSS_HASH_TYPE_DELTA)
 		bp->rss_hash_delta = bp->rss_hash_cfg ^ rss_hash_cfg;
 	bp->rss_hash_cfg = rss_hash_cfg;
 	if (netif_running(bp->dev)) {