DPDK patches and discussions
 help / color / mirror / Atom feed
* [dpdk-dev] [PATCH] i40e: configure MTU
@ 2016-04-23 11:26 Beilei Xing
  2016-04-26  2:00 ` Wu, Jingjing
                   ` (2 more replies)
  0 siblings, 3 replies; 22+ messages in thread
From: Beilei Xing @ 2016-04-23 11:26 UTC (permalink / raw)
  To: jingjing.wu; +Cc: dev, Beilei Xing

This patch enables configuring MTU for i40e.
Since changing MTU needs to reconfigure queue, stop port first
before configuring MTU.

Signed-off-by: Beilei Xing <beilei.xing@intel.com>
---
 drivers/net/i40e/i40e_ethdev.c | 49 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)

diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
index bc28d3c..29259b9 100644
--- a/drivers/net/i40e/i40e_ethdev.c
+++ b/drivers/net/i40e/i40e_ethdev.c
@@ -447,6 +447,8 @@ static int i40e_get_eeprom(struct rte_eth_dev *dev,
 static void i40e_set_default_mac_addr(struct rte_eth_dev *dev,
 				      struct ether_addr *mac_addr);
 
+static int i40e_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu);
+
 static const struct rte_pci_id pci_id_i40e_map[] = {
 #define RTE_PCI_DEV_ID_DECL_I40E(vend, dev) {RTE_PCI_DEVICE(vend, dev)},
 #include "rte_pci_dev_ids.h"
@@ -520,6 +522,7 @@ static const struct eth_dev_ops i40e_eth_dev_ops = {
 	.get_eeprom_length            = i40e_get_eeprom_length,
 	.get_eeprom                   = i40e_get_eeprom,
 	.mac_addr_set                 = i40e_set_default_mac_addr,
+	.mtu_set                      = i40e_dev_mtu_set,
 };
 
 /* store statistics names and its offset in stats structure */
@@ -9104,3 +9107,49 @@ static void i40e_set_default_mac_addr(struct rte_eth_dev *dev,
 	/* Flags: 0x3 updates port address */
 	i40e_aq_mac_address_write(hw, 0x3, mac_addr->addr_bytes, NULL);
 }
+
+static int i40e_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
+{
+	struct i40e_pf *pf = I40E_DEV_PRIVATE_TO_PF(dev->data->dev_private);
+	struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+	struct rte_eth_dev_data *dev_data = pf->dev_data;
+	struct rte_eth_dev_info dev_info;
+	struct i40e_rx_queue *rxq;
+	int i;
+	uint16_t len;
+	uint32_t frame_size = mtu + ETHER_HDR_LEN + ETHER_CRC_LEN;
+	int ret = 0;
+
+	i40e_dev_info_get(dev, &dev_info);
+
+	/* check if mtu is within the allowed range */
+	if ((mtu < ETHER_MIN_MTU) || (frame_size > dev_info.max_rx_pktlen))
+		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\n",
+			    dev_data->port_id);
+		return -EBUSY;
+	}
+
+	if (frame_size > ETHER_MAX_LEN)
+		dev_data->dev_conf.rxmode.jumbo_frame = 1;
+	else
+		dev_data->dev_conf.rxmode.jumbo_frame = 0;
+
+	for (i = 0; i < dev_data->nb_rx_queues; i++) {
+		rxq = dev_data->rx_queues[i];
+		if (!rxq || !rxq->q_set)
+			continue;
+
+		dev_data->dev_conf.rxmode.max_rx_pkt_len = frame_size;
+		len = hw->func_caps.rx_buf_chain_len * rxq->rx_buf_len;
+		rxq->max_pkt_len = RTE_MIN(len, frame_size);
+	}
+
+	ret = i40e_dev_rx_init(pf);
+
+	return ret;
+}
-- 
2.5.0

^ permalink raw reply	[flat|nested] 22+ messages in thread

end of thread, other threads:[~2016-06-23 13:45 UTC | newest]

Thread overview: 22+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-04-23 11:26 [dpdk-dev] [PATCH] i40e: configure MTU Beilei Xing
2016-04-26  2:00 ` Wu, Jingjing
2016-04-27 11:43 ` Julien Meunier
2016-04-27 15:01   ` Xing, Beilei
2016-04-28  3:19 ` [dpdk-dev] [PATCH V2] " Beilei Xing
2016-05-13  8:15   ` [dpdk-dev] [PATCH v3] " Beilei Xing
2016-05-16 12:27     ` Olivier Matz
2016-06-16 17:40       ` Yong Wang
2016-06-16 17:51         ` Yong Wang
2016-06-17  0:03           ` Ananyev, Konstantin
2016-06-20  4:49         ` Xing, Beilei
2016-06-20  4:59           ` Xing, Beilei
2016-06-20  8:05           ` Ananyev, Konstantin
2016-06-20 12:04             ` Xing, Beilei
2016-06-20 12:15               ` Ananyev, Konstantin
2016-06-20 12:46                 ` Xing, Beilei
2016-05-20 15:17     ` [dpdk-dev] [PATCH v4] " Beilei Xing
2016-05-23  1:33       ` Wu, Jingjing
2016-06-09 14:23         ` Bruce Richardson
2016-06-23 10:13           ` Bruce Richardson
2016-06-23 13:37             ` Xing, Beilei
2016-06-23 13:44               ` Bruce Richardson

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).