From mboxrd@z Thu Jan  1 00:00:00 1970
From: Hemant Agrawal <hemant.agrawal@nxp.com>
Subject: [PATCHv4 24/33] net/dpaa2: add mtu config support
Date: Wed, 18 Jan 2017 00:22:45 +0530
Message-ID: <1484679174-4174-25-git-send-email-hemant.agrawal@nxp.com>
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 <1484679174-4174-1-git-send-email-hemant.agrawal@nxp.com>
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Cc: <thomas.monjalon@6wind.com>, <bruce.richardson@intel.com>,
 <shreyansh.jain@nxp.com>, <john.mcnamara@intel.com>,
 <ferruh.yigit@intel.com>, <jerin.jacob@caviumnetworks.com>, Hemant Agrawal
 <hemant.agrawal@nxp.com>
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Signed-off-by: Hemant Agrawal <hemant.agrawal@nxp.com>
---
 doc/guides/nics/features/dpaa2.ini      |  1 +
 drivers/bus/fslmc/portal/dpaa2_hw_pvt.h |  4 ++++
 drivers/net/dpaa2/dpaa2_ethdev.c        | 34 +++++++++++++++++++++++++++++++++
 3 files changed, 39 insertions(+)

diff --git a/doc/guides/nics/features/dpaa2.ini b/doc/guides/nics/features/dpaa2.ini
index b7c274a..a6b7964 100644
--- a/doc/guides/nics/features/dpaa2.ini
+++ b/doc/guides/nics/features/dpaa2.ini
@@ -5,6 +5,7 @@
 ;
 [Features]
 Queue start/stop     = Y
+MTU update           = Y
 Promiscuous mode     = Y
 RSS hash             = Y
 L3 checksum offload  = Y
diff --git a/drivers/bus/fslmc/portal/dpaa2_hw_pvt.h b/drivers/bus/fslmc/portal/dpaa2_hw_pvt.h
index 71361a4..7c6cc7e 100644
--- a/drivers/bus/fslmc/portal/dpaa2_hw_pvt.h
+++ b/drivers/bus/fslmc/portal/dpaa2_hw_pvt.h
@@ -43,6 +43,10 @@
 #ifndef true
 #define true       1
 #endif
+
+#ifndef ETH_VLAN_HLEN
+#define ETH_VLAN_HLEN   4 /** < Vlan Header Length */
+#endif
 #define DPAA2_DQRR_RING_SIZE	16
 	/** <Maximum number of slots available in RX ring*/
 
diff --git a/drivers/net/dpaa2/dpaa2_ethdev.c b/drivers/net/dpaa2/dpaa2_ethdev.c
index 76d8e6d..f98e7b8 100644
--- a/drivers/net/dpaa2/dpaa2_ethdev.c
+++ b/drivers/net/dpaa2/dpaa2_ethdev.c
@@ -477,6 +477,39 @@
 	if (ret < 0)
 		RTE_LOG(ERR, PMD, "Unable to disable promiscuous mode %d", ret);
 }
+
+static int
+dpaa2_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
+{
+	int ret;
+	struct dpaa2_dev_priv *priv = dev->data->dev_private;
+	struct fsl_mc_io *dpni = (struct fsl_mc_io *)priv->hw;
+	uint32_t frame_size = mtu + ETHER_HDR_LEN + ETHER_CRC_LEN;
+
+	PMD_INIT_FUNC_TRACE();
+
+	if (dpni == NULL) {
+		RTE_LOG(ERR, PMD, "dpni is NULL");
+		return -EINVAL;
+	}
+
+	/* check that mtu is within the allowed range */
+	if ((mtu < ETHER_MIN_MTU) || (frame_size > DPAA2_MAX_RX_PKT_LEN))
+		return -EINVAL;
+
+	/* Set the Max Rx frame length as 'mtu' +
+	 * Maximum Ethernet header length
+	 */
+	ret = dpni_set_max_frame_length(dpni, CMD_PRI_LOW, priv->token,
+					mtu + ETH_VLAN_HLEN);
+	if (ret) {
+		PMD_DRV_LOG(ERR, "setting the max frame length failed");
+		return -1;
+	}
+	PMD_DRV_LOG(INFO, "MTU is configured %d for the device\n", mtu);
+	return 0;
+}
+
 static struct eth_dev_ops dpaa2_ethdev_ops = {
 	.dev_configure	  = dpaa2_eth_dev_configure,
 	.dev_start	      = dpaa2_dev_start,
@@ -485,6 +518,7 @@
 	.promiscuous_enable   = dpaa2_dev_promiscuous_enable,
 	.promiscuous_disable  = dpaa2_dev_promiscuous_disable,
 	.dev_infos_get	   = dpaa2_dev_info_get,
+	.mtu_set           = dpaa2_dev_mtu_set,
 	.rx_queue_setup    = dpaa2_dev_rx_queue_setup,
 	.rx_queue_release  = dpaa2_dev_rx_queue_release,
 	.tx_queue_setup    = dpaa2_dev_tx_queue_setup,
-- 
1.9.1