[dpdk-dev] [PATCH 07/19] net/ice: support MTU setting

[Wenzhuo Lu <wenzhuo.lu@intel.com>]

Add ops link_update.

Signed-off-by: Wenzhuo Lu <wenzhuo.lu@intel.com>
Signed-off-by: Qiming Yang <qiming.yang@intel.com>
Signed-off-by: Xiaoyun Li <xiaoyun.li@intel.com>
Signed-off-by: Jingjing Wu <jingjing.wu@intel.com>
---
 drivers/net/ice/ice_ethdev.c | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/drivers/net/ice/ice_ethdev.c b/drivers/net/ice/ice_ethdev.c
index 75246da..5beb356 100644
--- a/drivers/net/ice/ice_ethdev.c
+++ b/drivers/net/ice/ice_ethdev.c
@@ -23,6 +23,7 @@ static void ice_dev_info_get(struct rte_eth_dev *dev,
 			     struct rte_eth_dev_info *dev_info);
 static int ice_link_update(struct rte_eth_dev *dev,
 			   int wait_to_complete);
+static int ice_mtu_set(struct rte_eth_dev *dev, uint16_t mtu);
 
 static const struct rte_pci_id pci_id_ice_map[] = {
 	{ RTE_PCI_DEVICE(ICE_INTEL_VENDOR_ID, ICE_DEV_ID_E810C_BACKPLANE) },
@@ -48,6 +49,7 @@ static int ice_link_update(struct rte_eth_dev *dev,
 	.dev_infos_get                = ice_dev_info_get,
 	.dev_supported_ptypes_get     = ice_dev_supported_ptypes_get,
 	.link_update                  = ice_link_update,
+	.mtu_set                      = ice_mtu_set,
 };
 
 static void
@@ -1275,3 +1277,38 @@ static int ice_init_rss(struct ice_pf *pf)
 
 	return 0;
 }
+
+static int
+ice_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
+{
+	struct ice_pf *pf = ICE_DEV_PRIVATE_TO_PF(dev->data->dev_private);
+	struct rte_eth_dev_data *dev_data = pf->dev_data;
+	uint32_t frame_size = mtu + ETHER_HDR_LEN
+			      + ETHER_CRC_LEN + ICE_VLAN_TAG_SIZE;
+
+	if (rte_eal_process_type() == RTE_PROC_SECONDARY)
+		return -E_RTE_SECONDARY;
+
+	/* check if mtu is within the allowed range */
+	if ((mtu < ETHER_MIN_MTU) || (frame_size > ICE_FRAME_SIZE_MAX))
+		return -EINVAL;
+
+	/* mtu setting is forbidden if port is start */
+	if (dev_data->dev_started) {
+		PMD_DRV_LOG(ERR,
+			    "port %d must be stopped before configuration",
+			    dev_data->port_id);
+		return -EBUSY;
+	}
+
+	if (frame_size > ETHER_MAX_LEN)
+		dev_data->dev_conf.rxmode.offloads |=
+			DEV_RX_OFFLOAD_JUMBO_FRAME;
+	else
+		dev_data->dev_conf.rxmode.offloads &=
+			~DEV_RX_OFFLOAD_JUMBO_FRAME;
+
+	dev_data->dev_conf.rxmode.max_rx_pkt_len = frame_size;
+
+	return 0;
+}
-- 
1.9.3