Re: [dpdk-dev] [PATCH] net/i40e: i40e rework for ipn3ke

["Xu, Rosen" <rosen.xu@intel.com>]

Hi,

> -----Original Message-----
> From: Pei, Andy
> Sent: Thursday, May 23, 2019 17:15
> To: dev@dpdk.org
> Cc: Pei, Andy <andy.pei@intel.com>; Zhang, Roy Fan
> <roy.fan.zhang@intel.com>; Zhang, Qi Z <qi.z.zhang@intel.com>; Wu,
> Jingjing <jingjing.wu@intel.com>; Xing, Beilei <beilei.xing@intel.com>; Yigit,
> Ferruh <ferruh.yigit@intel.com>; Xu, Rosen <rosen.xu@intel.com>
> Subject: [PATCH] net/i40e: i40e rework for ipn3ke

> Add switch_mode argument for i40e PF to specify the specific FPGA that i40e
> PF is connected to.
> i40e PF get link status update via the connected FPGA.
> 
> Fixes: c60869e2b742 ("net/i40e: fix link status update")
> Cc: roy.fan.zhang@intel.com
> Cc: qi.z.zhang@intel.com
> Cc: jingjing.wu@intel.com
> Cc: beilei.xing@intel.com
> Cc: ferruh.yigit@intel.com
> Cc: rosen.xu@intel.com

My understanding cc people should add in git send-email not in patch.

> Signed-off-by: Andy Pei <andy.pei@intel.com>
> ---
>  drivers/net/i40e/i40e_ethdev.c | 128
> +++++++++++++++++++++++++++++++++++++++--
>  1 file changed, 122 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
> index cab440f..9873ea0 100644
> --- a/drivers/net/i40e/i40e_ethdev.c
> +++ b/drivers/net/i40e/i40e_ethdev.c
> @@ -39,11 +39,12 @@
>  #include "i40e_regs.h"
>  #include "rte_pmd_i40e.h"
> 
> -#define ETH_I40E_FLOATING_VEB_ARG	"enable_floating_veb"
> -#define ETH_I40E_FLOATING_VEB_LIST_ARG	"floating_veb_list"
> -#define ETH_I40E_SUPPORT_MULTI_DRIVER	"support-multi-driver"
> -#define ETH_I40E_QUEUE_NUM_PER_VF_ARG	"queue-num-per-vf"
> -#define ETH_I40E_USE_LATEST_VEC	"use-latest-supported-vec"
> +#define ETH_I40E_FLOATING_VEB_ARG         "enable_floating_veb"
> +#define ETH_I40E_FLOATING_VEB_LIST_ARG    "floating_veb_list"
> +#define ETH_I40E_SUPPORT_MULTI_DRIVER     "support-multi-driver"
> +#define ETH_I40E_QUEUE_NUM_PER_VF_ARG     "queue-num-per-vf"
> +#define ETH_I40E_USE_LATEST_VEC           "use-latest-supported-vec"
> +#define ETH_I40E_SWITCH_MODE_ARG          "switch_mode"
> 
>  #define I40E_CLEAR_PXE_WAIT_MS     200
> 
> @@ -410,6 +411,7 @@ static int i40e_sw_tunnel_filter_insert(struct i40e_pf
> *pf,
>  	ETH_I40E_SUPPORT_MULTI_DRIVER,
>  	ETH_I40E_QUEUE_NUM_PER_VF_ARG,
>  	ETH_I40E_USE_LATEST_VEC,
> +	ETH_I40E_SWITCH_MODE_ARG,
>  	NULL};
> 
>  static const struct rte_pci_id pci_id_i40e_map[] = { @@ -2784,6 +2786,80
> @@ void i40e_flex_payload_reg_set_default(struct i40e_hw *hw)
>  	}
>  }
> 
> +static int
> +i40e_pf_parse_switch_mode(const char *key __rte_unused,
> +	const char *value, void *extra_args)
> +{
> +	if (!value || !extra_args)
> +		return -EINVAL;
> +
> +	*(char **)extra_args = strdup(value);
> +
> +	if (!*(char **)extra_args)
> +		return -ENOMEM;
> +
> +	return 0;
> +}
> +
> +static void
> +i40e_pf_switch_mode_link_update(const char *cfg_str,
> +	struct rte_eth_dev **switch_ethdev)
> +{
> +	char switch_name[RTE_ETH_NAME_MAX_LEN] = {0};
> +	char port_name[RTE_ETH_NAME_MAX_LEN] = {0};
> +	char switch_ethdev_name[RTE_ETH_NAME_MAX_LEN] = {0};
> +	uint16_t port_id;
> +	const char *p_src;
> +	char *p_dst;
> +	int ret = -1;
> +
> +	/* An example of cfg_str is "IPN3KE_0@b3:00.0_0" */
> +	if (!strncmp(cfg_str, "IPN3KE", strlen("IPN3KE"))) {
> +		p_src = cfg_str;
> +		PMD_DRV_LOG(DEBUG, "cfg_str is %s", cfg_str);
> +
> +		/* move over "IPN3KE" */
> +		while ((*p_src != '_') && (*p_src))
> +			p_src++;
> +
> +		/* move over the first underline */
> +		p_src++;
> +
> +		p_dst = switch_name;
> +		while ((*p_src != '_') && (*p_src)) {
> +			if (*p_src == '@') {
> +				*p_dst++ = '|';
> +				p_src++;
> +			} else
> +				*p_dst++ = *p_src++;
> +		}
> +		*p_dst = 0;
> +		PMD_DRV_LOG(DEBUG, "switch_name is %s", switch_name);
> +
> +		/* move over the second underline */
> +		p_src++;
> +
> +		p_dst = port_name;
> +		while (*p_src)
> +			*p_dst++ = *p_src++;
> +		*p_dst = 0;
> +		PMD_DRV_LOG(DEBUG, "port_name is %s", port_name);
> +
> +		snprintf(switch_ethdev_name, sizeof(switch_ethdev_name),
> +			"net_%s_representor_%s", switch_name,
> port_name);
> +		PMD_DRV_LOG(DEBUG, "switch_ethdev_name is %s",
> +			switch_ethdev_name);
> +
> +		ret = rte_eth_dev_get_port_by_name(switch_ethdev_name,
> +			&port_id);
> +		if (ret)
> +			*switch_ethdev = NULL;
> +		else
> +			*switch_ethdev = &rte_eth_devices[port_id];
> +	} else
> +		*switch_ethdev = NULL;
> +}
> +
>  int
>  i40e_dev_link_update(struct rte_eth_dev *dev,
>  		     int wait_to_complete)
> @@ -2792,6 +2868,11 @@ void i40e_flex_payload_reg_set_default(struct
> i40e_hw *hw)
>  	struct rte_eth_link link;
>  	bool enable_lse = dev->data->dev_conf.intr_conf.lsc ? true : false;
>  	int ret;
> +	struct rte_devargs *devargs;
> +	struct rte_kvargs *kvlist = NULL;
> +	struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
> +	struct rte_eth_dev *switch_ethdev;
> +	char *switch_cfg_str = NULL;
> 
>  	memset(&link, 0, sizeof(link));
> 
> @@ -2805,6 +2886,40 @@ void i40e_flex_payload_reg_set_default(struct
> i40e_hw *hw)
>  	else
>  		update_link_aq(hw, &link, enable_lse, wait_to_complete);
> 
> +	devargs = pci_dev->device.devargs;
> +	if (devargs) {
> +		kvlist = rte_kvargs_parse(devargs->args, valid_keys);
> +		if (kvlist != NULL) {
> +			if (rte_kvargs_count(kvlist,
> ETH_I40E_SWITCH_MODE_ARG)
> +				== 1) {
> +				if (!rte_kvargs_process(kvlist,
> +					ETH_I40E_SWITCH_MODE_ARG,
> +					&i40e_pf_parse_switch_mode,
> +					&switch_cfg_str)) {
> +
> +					i40e_pf_switch_mode_link_update(
> +						switch_cfg_str,
> +						&switch_ethdev);
> +
> +					if (switch_ethdev) {
> +						rte_eth_linkstatus_get(
> +							switch_ethdev,
> +							&link);
> +					} else {
> +						link.link_duplex =
> +
> 	ETH_LINK_FULL_DUPLEX;
> +						link.link_autoneg =
> +
> 	ETH_LINK_SPEED_FIXED;
> +						link.link_speed =
> +
> 	ETH_SPEED_NUM_25G;
> +						link.link_status = 0;
> +					}
> +				}
> +			}
> +			rte_kvargs_free(kvlist);
> +		}
> +	}
> +
>  	ret = rte_eth_linkstatus_set(dev, &link);
>  	i40e_notify_all_vfs_link_status(dev);
> 
> @@ -12790,4 +12905,5 @@ struct i40e_customized_pctype*
>  			      ETH_I40E_FLOATING_VEB_LIST_ARG "=<string>"
>  			      ETH_I40E_QUEUE_NUM_PER_VF_ARG
> "=1|2|4|8|16"
>  			      ETH_I40E_SUPPORT_MULTI_DRIVER "=1"
> -			      ETH_I40E_USE_LATEST_VEC "=0|1");
> +			      ETH_I40E_USE_LATEST_VEC "=0|1"
> +			      ETH_I40E_SWITCH_MODE_ARG "=IPN3KE");
> --
> 1.8.3.1