octeontx2-af: cn10k: Fixes CN10K RPM reference issue

This patch fixes references to uninitialized variables and
debugfs entry name for CN10K platform and HW_TSO flag check.

Fixes: 3ad3f8f93c ("octeontx2-af: cn10k: MAC internal loopback support").
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>

v1-v2
- Clear HW_TSO flag for 96xx B0 version.

This patch fixes the bug introduced by the commit
3ad3f8f93c ("octeontx2-af: cn10k: MAC internal loopback support").
These changes are not yet merged into net branch, hence submitting
to net-next.

Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c

@@ -722,12 +722,14 @@ u32 rvu_cgx_get_fifolen(struct rvu *rvu)
 
 static int rvu_cgx_config_intlbk(struct rvu *rvu, u16 pcifunc, bool en)
 {
+	int pf = rvu_get_pf(pcifunc);
 	struct mac_ops *mac_ops;
 	u8 cgx_id, lmac_id;
 
 	if (!is_cgx_config_permitted(rvu, pcifunc))
 		return -EPERM;
 
+	rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id);
 	mac_ops = get_mac_ops(rvu_cgx_pdata(cgx_id, rvu));
 
 	return mac_ops->mac_lmac_intl_lbk(rvu_cgx_pdata(cgx_id, rvu),

drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c

@@ -2432,7 +2432,7 @@ void rvu_dbg_init(struct rvu *rvu)
 		debugfs_create_file("rvu_pf_cgx_map", 0444, rvu->rvu_dbg.root,
 				    rvu, &rvu_dbg_rvu_pf_cgx_map_fops);
 	else
-		debugfs_create_file("rvu_pf_cgx_map", 0444, rvu->rvu_dbg.root,
+		debugfs_create_file("rvu_pf_rpm_map", 0444, rvu->rvu_dbg.root,
 				    rvu, &rvu_dbg_rvu_pf_cgx_map_fops);
 
 create:

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

@@ -407,6 +407,9 @@ static inline void otx2_setup_dev_hw_settings(struct otx2_nic *pfvf)
 		pfvf->hw.rq_skid = 600;
 		pfvf->qset.rqe_cnt = Q_COUNT(Q_SIZE_1K);
 	}
+	if (is_96xx_B0(pfvf->pdev))
+		__clear_bit(HW_TSO, &hw->cap_flag);
+
 	if (!is_dev_otx2(pfvf->pdev)) {
 		__set_bit(CN10K_MBOX, &hw->cap_flag);
 		__set_bit(CN10K_LMTST, &hw->cap_flag);

drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c

@@ -816,22 +816,23 @@ static bool is_hw_tso_supported(struct otx2_nic *pfvf,
 {
 	int payload_len, last_seg_size;
 
+	if (test_bit(HW_TSO, &pfvf->hw.cap_flag))
+		return true;
+
+	/* On 96xx A0, HW TSO not supported */
+	if (!is_96xx_B0(pfvf->pdev))
+		return false;
 
 	/* HW has an issue due to which when the payload of the last LSO
 	 * segment is shorter than 16 bytes, some header fields may not
 	 * be correctly modified, hence don't offload such TSO segments.
 	 */
-	if (!is_96xx_B0(pfvf->pdev))
-		return true;
 
 	payload_len = skb->len - (skb_transport_offset(skb) + tcp_hdrlen(skb));
 	last_seg_size = payload_len % skb_shinfo(skb)->gso_size;
 	if (last_seg_size && last_seg_size < 16)
 		return false;
 
-	if (!test_bit(HW_TSO, &pfvf->hw.cap_flag))
-		return false;
-
 	return true;
 }