diff mbox series

[07/19] net/ice: support MTU setting

Message ID 1542956179-80951-8-git-send-email-wenzhuo.lu@intel.com (mailing list archive)
State Superseded, archived
Delegated to: Qi Zhang
Headers
Series A new net PMD - ice |

Checks

Context Check Description
ci/checkpatch warning coding style issues
ci/Intel-compilation fail Compilation issues

Commit Message

Wenzhuo Lu Nov. 23, 2018, 6:56 a.m. UTC 
  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(+)

Comments

Varghese, Vipin Nov. 23, 2018, 9:58 a.m. UTC | #1 
HI Wenzhou,

Following is a thought but not an issue. Can you please let me know your thought?

<snipped>

> +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;
> +

Should we set MTU > 1500 (Jumbo frame) if device is not configured to run with jumbo frame? If no, should we check the jumbo config is enabled for the current device?

> +	/* 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
Qiming Yang Nov. 26, 2018, 3:38 a.m. UTC | #2 
Hi, Vipin
Not sure understand your question.
We have no need to configure jumbo frame, because jumbo frame offload will be enable when mtu>1500.

Qiming
-----Original Message-----
From: Varghese, Vipin 
Sent: Friday, November 23, 2018 5:58 PM
To: Lu, Wenzhuo <wenzhuo.lu@intel.com>; dev@dpdk.org
Cc: Lu, Wenzhuo <wenzhuo.lu@intel.com>; Yang, Qiming <qiming.yang@intel.com>; Li, Xiaoyun <xiaoyun.li@intel.com>; Wu, Jingjing <jingjing.wu@intel.com>
Subject: RE: [dpdk-dev] [PATCH 07/19] net/ice: support MTU setting

HI Wenzhou,

Following is a thought but not an issue. Can you please let me know your thought?

<snipped>

> +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;
> +

Should we set MTU > 1500 (Jumbo frame) if device is not configured to run with jumbo frame? If no, should we check the jumbo config is enabled for the current device?

> +	/* 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
Varghese, Vipin Nov. 26, 2018, 3:58 a.m. UTC | #3 
Hi Qiming

> -----Original Message-----
> From: Yang, Qiming
> Sent: Monday, November 26, 2018 9:09 AM
> To: Varghese, Vipin <vipin.varghese@intel.com>; Lu, Wenzhuo
> <wenzhuo.lu@intel.com>; dev@dpdk.org
> Cc: Lu, Wenzhuo <wenzhuo.lu@intel.com>; Li, Xiaoyun <xiaoyun.li@intel.com>;
> Wu, Jingjing <jingjing.wu@intel.com>
> Subject: RE: [dpdk-dev] [PATCH 07/19] net/ice: support MTU setting
> 
> Hi, Vipin
> Not sure understand your question.
> We have no need to configure jumbo frame, because jumbo frame offload will be
> enable when mtu>1500.

Apologies if the question is not clear. Let me try to explain what I am trying to ask below

> 
> Qiming
> -----Original Message-----
> From: Varghese, Vipin
> Sent: Friday, November 23, 2018 5:58 PM
> To: Lu, Wenzhuo <wenzhuo.lu@intel.com>; dev@dpdk.org
> Cc: Lu, Wenzhuo <wenzhuo.lu@intel.com>; Yang, Qiming
> <qiming.yang@intel.com>; Li, Xiaoyun <xiaoyun.li@intel.com>; Wu, Jingjing
> <jingjing.wu@intel.com>
> Subject: RE: [dpdk-dev] [PATCH 07/19] net/ice: support MTU setting
> 
> HI Wenzhou,
> 
> Following is a thought but not an issue. Can you please let me know your
> thought?
> 
> <snipped>
> 
> > +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;
> > +
> 
> Should we set MTU > 1500 (Jumbo frame) if device is not configured to run with
> jumbo frame? If no, should we check the jumbo config is enabled for the current
> device?
> 

1. If by default JUMBO enabled for this device?
2. There is RX offload which is configured with value 'DEV_RX_OFFLOAD_JUMBO_FRAME'. Should this be enabled for supporting JUMBO frames?
3. There is per RX queue offload flag too 'DEV_RX_OFFLOAD_JUMBO_FRAME'. If port_conf is set for 'DEV_RX_OFFLOAD_JUMBO_FRAME' but disabled for specific RX queue 'DEV_RX_OFFLOAD_JUMBO_FRAME', what is the JUMBO setting for the device?

Hence do we need to check 'mtu_set' for whether actually device is configured for JUMBO processing or not?

> > +	/* 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
diff mbox series

Patch

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;
+}