Re: [PATCH v6 2/6] net/i40e: add dynamic device profile processing

["Wu, Jingjing" <jingjing.wu@intel.com>]

Looks good to me, only minor comments like below:

> -----Original Message-----
> From: Xing, Beilei
> Sent: Wednesday, March 29, 2017 8:27 PM
> To: Wu, Jingjing <jingjing.wu@intel.com>
> Cc: Zhang, Helin <helin.zhang@intel.com>; Iremonger, Bernard
> <bernard.iremonger@intel.com>; dev@dpdk.org
> Subject: [PATCH v6 2/6] net/i40e: add dynamic device profile processing
> 
> Add support for adding a dynamic device profile.
> 
> Signed-off-by: Beilei Xing <beilei.xing@intel.com>
> ---
>  drivers/net/i40e/i40e_ethdev.c            | 199
> ++++++++++++++++++++++++++++++
>  drivers/net/i40e/rte_pmd_i40e.h           |  58 +++++++++
>  drivers/net/i40e/rte_pmd_i40e_version.map |   1 +
>  3 files changed, 258 insertions(+)
> 
> diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
> index 2063603..764764f 100644
> --- a/drivers/net/i40e/i40e_ethdev.c
> +++ b/drivers/net/i40e/i40e_ethdev.c
> @@ -11708,3 +11708,202 @@ rte_pmd_i40e_set_tc_strict_prio(uint8_t port,
> uint8_t tc_map)
> 
>  	return ret;
>  }
> +
> +static void
> +i40e_generate_profile_info_sec(char *name, struct i40e_ddp_version *version,
> +			       uint32_t track_id, uint8_t *profile_info_sec,
> +			       bool add)
> +{
> +	struct i40e_profile_section_header *sec = NULL;
> +	struct i40e_profile_info *pinfo;
> +
> +	sec = (struct i40e_profile_section_header *)profile_info_sec;
> +	sec->tbl_size = 1;
> +	sec->data_end = sizeof(struct i40e_profile_section_header) +
> +		sizeof(struct i40e_profile_info);
> +	sec->section.type = SECTION_TYPE_INFO;
> +	sec->section.offset = sizeof(struct i40e_profile_section_header);
> +	sec->section.size = sizeof(struct i40e_profile_info);
> +	pinfo = (struct i40e_profile_info *)(profile_info_sec +
> +					     sec->section.offset);
> +	pinfo->track_id = track_id;
> +	memcpy(pinfo->name, name, I40E_DDP_NAME_SIZE);
> +	memcpy(&pinfo->version, version, sizeof(struct i40e_ddp_version));
> +	if (add)
> +		pinfo->op = I40E_DDP_ADD_TRACKID;
> +	else
> +		pinfo->op = I40E_DDP_REMOVE_TRACKID;
> +}
> +
> +static enum i40e_status_code
> +i40e_add_rm_profile_info(struct i40e_hw *hw, uint8_t *profile_info_sec)
> +{
> +	enum i40e_status_code status = I40E_SUCCESS;
> +	struct i40e_profile_section_header *sec;
> +	uint32_t track_id;
> +	uint32_t offset = 0, info = 0;

Cannot set more than one vars in one line according to the coding style.
uint32_t offset = 0;
uint32_t info = 0;



> +/* Check if the profile info exists */
> +static int
> +i40e_check_profile_info(uint8_t port, uint8_t *profile_info_sec) {
> +	struct rte_eth_dev *dev = &rte_eth_devices[port];
> +	struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data-
> >dev_private);
> +	uint8_t *buff;
> +	struct rte_pmd_i40e_profile_list *p_list;
> +	struct rte_pmd_i40e_profile_info *pinfo, *p;
> +	uint32_t i;
> +	int ret;
> +
> +	buff = rte_zmalloc("pinfo_list",
> +			   (I40E_PROFILE_INFO_SIZE *
> I40E_MAX_PROFILE_NUM + 4),
> +			   0);
> +	if (!buff) {
> +		PMD_DRV_LOG(ERR, "failed to allocate memory");
> +		return -1;
> +	}
> +
> +	ret = i40e_aq_get_ddp_list(hw, (void *)buff,
> +		      (I40E_PROFILE_INFO_SIZE * I40E_MAX_PROFILE_NUM + 4),
> +		      0, NULL);
> +	if (ret) {
> +		PMD_DRV_LOG(ERR, "Failed to get profile info list.");
> +		rte_free(buff);
> +		return -1;
> +	}
> +	p_list = (struct rte_pmd_i40e_profile_list *)buff;
> +	pinfo = (struct rte_pmd_i40e_profile_info *)(profile_info_sec +
> +			     sizeof(struct i40e_profile_section_header));
> +	for (i = 0; i < p_list->p_count; i++) {
> +		p = &p_list->p_info[i];
> +		if ((pinfo->track_id == p->track_id) &&
> +		    !memcmp(&pinfo->version, &p->version,
> +			    sizeof(struct i40e_ddp_version)) &&
> +		    !memcmp(&pinfo->name, &p->name,
> +			    I40E_DDP_NAME_SIZE)) {
> +			PMD_DRV_LOG(INFO, "Profile exists.");
> +			rte_free(buff);
> +			return 1;
> +		}
> +	}
> +
> +	rte_free(buff);
> +	return 0;
> +}
> +
> +int
> +rte_pmd_i40e_process_ddp_package(uint8_t port, uint8_t *buff,
> +				 uint32_t size,
> +				 enum rte_pmd_i40e_package_op op)
> +{
> +	struct rte_eth_dev *dev;
> +	struct i40e_hw *hw;
> +	struct i40e_package_header *pkg_hdr;
> +	struct i40e_generic_seg_header *profile_seg_hdr;
> +	struct i40e_generic_seg_header *metadata_seg_hdr;
> +	uint32_t track_id;
> +	uint8_t *profile_info_sec;
> +	int is_exist;
> +	enum i40e_status_code status = I40E_SUCCESS;
> +
> +	RTE_ETH_VALID_PORTID_OR_ERR_RET(port, -ENODEV);
> +
> +	dev = &rte_eth_devices[port];
> +
> +	if (!is_device_supported(dev, &rte_i40e_pmd))
> +		return -ENOTSUP;
> +
> +	hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
> +
> +	if (size < (sizeof(struct i40e_package_header) +
> +		    sizeof(struct i40e_metadata_segment) +
> +		    sizeof(uint32_t) * 2)) {
> +		PMD_DRV_LOG(ERR, "Buff is invalid.");
> +		return -EINVAL;
> +	}
> +
> +	pkg_hdr = (struct i40e_package_header *)buff;
> +
> +	if (!pkg_hdr) {
> +		PMD_DRV_LOG(ERR, "Failed to fill the package structure");
> +		return -EINVAL;
> +	}
> +
> +	if (pkg_hdr->segment_count < 2) {
> +		PMD_DRV_LOG(ERR, "Segment_count should be 2 at least.");
> +		return -EINVAL;
> +	}
> +
> +	/* Find metadata segment */
> +	metadata_seg_hdr =
> i40e_find_segment_in_package(SEGMENT_TYPE_METADATA,
> +							pkg_hdr);
> +	if (!metadata_seg_hdr) {
> +		PMD_DRV_LOG(ERR, "Failed to find metadata segment
> header");
> +		return -EINVAL;
> +	}
> +	track_id = ((struct i40e_metadata_segment
> +*)metadata_seg_hdr)->track_id;
> +
> +	/* Find profile segment */
> +	profile_seg_hdr = i40e_find_segment_in_package(SEGMENT_TYPE_I40E,
> +						       pkg_hdr);
> +	if (!profile_seg_hdr) {
> +		PMD_DRV_LOG(ERR, "Failed to find profile segment header");
> +		return -EINVAL;
> +	}
> +
> +	profile_info_sec = rte_zmalloc("i40e_profile_info",
> +			       sizeof(struct i40e_profile_section_header) +
> +			       sizeof(struct i40e_profile_info),
> +			       0);
> +	if (!profile_info_sec) {
> +		PMD_DRV_LOG(ERR, "Failed to allocate memory");
> +		return -EINVAL;
> +	}
> +
> +	if (op == RTE_PMD_I40E_PKG_OP_WR_ADD) {
> +		/* Check if the profile exists */
> +		i40e_generate_profile_info_sec(
> +		     ((struct i40e_profile_segment *)profile_seg_hdr)->name,
> +		     &((struct i40e_profile_segment *)profile_seg_hdr)->version,
> +		     track_id, profile_info_sec, 1);
> +		is_exist = i40e_check_profile_info(port, profile_info_sec);
> +		if (is_exist) {

The i40e_check_profile_info also has a return value like "-1".
It doesn't mean profile exists, right?

> +			PMD_DRV_LOG(ERR, "Profile already exists.");
> +			rte_free(profile_info_sec);
> +			return 1;
> +		}
> +
> +		/* Write profile to HW */
> +		status = i40e_write_profile(hw,
> +				 (struct i40e_profile_segment *)profile_seg_hdr,
> +				 track_id);
> +		if (status)
> +			PMD_DRV_LOG(ERR, "Failed to write profile.");
> +
> +		/* Add profile info to info list */
> +		status = i40e_add_rm_profile_info(hw, profile_info_sec);
If i40e_write_profile failed, do we still need to add profile info?