[PATCH v2 07/13] 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 <ndabilpu...@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