[PATCH v3 07/14] common/cnxk: skip setting Tx MTU separately

[Nithin Dabilpuram]

Skip setting Tx MTU separately as now the Tx credit configuration
is based on max MTU possible for that link.
Also init MTU with max value for that port.

Signed-off-by: Nithin Dabilpuram <ndabilpuram at marvell.com>
---
 drivers/common/cnxk/roc_nix.c      |  2 +-
 drivers/common/cnxk/roc_nix.h      |  2 --
 drivers/net/cnxk/cnxk_ethdev_ops.c | 12 +-----------
 3 files changed, 2 insertions(+), 14 deletions(-)

diff --git a/drivers/common/cnxk/roc_nix.c b/drivers/common/cnxk/roc_nix.c
index f64933a1d9..afbc3eb901 100644
--- a/drivers/common/cnxk/roc_nix.c
+++ b/drivers/common/cnxk/roc_nix.c
@@ -482,7 +482,7 @@ roc_nix_dev_init(struct roc_nix *roc_nix)
 	sdp_lbk_id_update(pci_dev, nix);
 	nix->pci_dev = pci_dev;
 	nix->reta_sz = reta_sz;
-	nix->mtu = ROC_NIX_DEFAULT_HW_FRS;
+	nix->mtu = roc_nix_max_pkt_len(roc_nix);
 	nix->dmac_flt_idx = -1;
 
 	/* Register error and ras interrupts */
diff --git a/drivers/common/cnxk/roc_nix.h b/drivers/common/cnxk/roc_nix.h
index 9d57ca0be7..3799b551f2 100644
--- a/drivers/common/cnxk/roc_nix.h
+++ b/drivers/common/cnxk/roc_nix.h
@@ -267,8 +267,6 @@ struct roc_nix_eeprom_info {
 #define ROC_NIX_RSS_KEY_LEN	     48 /* 352 Bits */
 #define ROC_NIX_RSS_MCAM_IDX_DEFAULT (-1)
 
-#define ROC_NIX_DEFAULT_HW_FRS 1514
-
 #define ROC_NIX_VWQE_MAX_SIZE_LOG2 11
 #define ROC_NIX_VWQE_MIN_SIZE_LOG2 2
 
diff --git a/drivers/net/cnxk/cnxk_ethdev_ops.c b/drivers/net/cnxk/cnxk_ethdev_ops.c
index e816884d47..4962f3bced 100644
--- a/drivers/net/cnxk/cnxk_ethdev_ops.c
+++ b/drivers/net/cnxk/cnxk_ethdev_ops.c
@@ -610,19 +610,9 @@ cnxk_nix_mtu_set(struct rte_eth_dev *eth_dev, uint16_t mtu)
 
 	frame_size -= RTE_ETHER_CRC_LEN;
 
-	/* Update mtu on Tx */
-	rc = roc_nix_mac_mtu_set(nix, frame_size);
-	if (rc) {
-		plt_err("Failed to set MTU, rc=%d", rc);
-		goto exit;
-	}
-
-	/* Sync same frame size on Rx */
+	/* Set frame size on Rx */
 	rc = roc_nix_mac_max_rx_len_set(nix, frame_size);
 	if (rc) {
-		/* Rollback to older mtu */
-		roc_nix_mac_mtu_set(nix,
-				    old_frame_size - RTE_ETHER_CRC_LEN);
 		plt_err("Failed to max Rx frame length, rc=%d", rc);
 		goto exit;
 	}
-- 
2.25.1