Re: [dpdk-stable] [dpdk-dev] [PATCH v2] net/i40e: fix link status

[Jeff Guo <jia.guo@intel.com>]

Acked-by: Jeff Guo <jia.guo@intel.com>

On 7/30/2020 6:51 PM, Wang, ShougangX wrote:
> Tested-by: Shougang Wang <shougangx.wang@intel.com>
>
>> -----Original Message-----
>> From: dev <dev-bounces@dpdk.org> On Behalf Of Guinan Sun
>> Sent: Thursday, July 30, 2020 6:25 PM
>> To: Xing, Beilei <beilei.xing@intel.com>; Guo, Jia <jia.guo@intel.com>;
>> dev@dpdk.org
>> Cc: Sun, GuinanX <guinanx.sun@intel.com>; stable@dpdk.org
>> Subject: [dpdk-dev] [PATCH v2] net/i40e: fix link status
>>
>> If the PF driver supports the new speed reporting capabilities then use
>> link_event_adv instead of link_event to get the speed.
>>
>> Fixes: 2a73125b7041 ("i40evf: fix link info update")
>> Cc: stable@dpdk.org
>>
>> Signed-off-by: Guinan Sun <guinanx.sun@intel.com>
>> ---
>> v2:
>> * Modify commit log.
>> * Add code comments.
>> * Delete useless codes.
>> ---
>>   drivers/net/i40e/base/virtchnl.h  | 16 +++++++++++-
>> drivers/net/i40e/i40e_ethdev_vf.c | 42
>> +++++++++++++++++++++++++++++--
>>   2 files changed, 55 insertions(+), 3 deletions(-)
>>
>> diff --git a/drivers/net/i40e/base/virtchnl.h
>> b/drivers/net/i40e/base/virtchnl.h
>> index 4f498ca45..9c64fd469 100644
>> --- a/drivers/net/i40e/base/virtchnl.h
>> +++ b/drivers/net/i40e/base/virtchnl.h
>> @@ -240,7 +240,8 @@ VIRTCHNL_CHECK_STRUCT_LEN(16,
>> virtchnl_vsi_resource);
>>   #define VIRTCHNL_VF_OFFLOAD_ENCAP0X00100000
>>   #define VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM0X00200000
>>   #define VIRTCHNL_VF_OFFLOAD_RX_ENCAP_CSUM0X00400000
>> -
>> +/* Define below the capability flags that are not offloads */
>> +#define VIRTCHNL_VF_CAP_ADV_LINK_SPEED0x00000080
>>   #define VF_BASE_MODE_OFFLOADS (VIRTCHNL_VF_OFFLOAD_L2 | \
>>          VIRTCHNL_VF_OFFLOAD_VLAN | \
>>          VIRTCHNL_VF_OFFLOAD_RSS_PF)
>> @@ -536,10 +537,23 @@ enum virtchnl_event_codes {  struct
>> virtchnl_pf_event {
>>   enum virtchnl_event_codes event;
>>   union {
>> +/* If the PF driver does not support the new speed reporting
>> + * capabilities then use link_event else use link_event_adv to
>> + * get the speed and link information. The ability to
>> understand
>> + * new speeds is indicated by setting the capability flag
>> + * VIRTCHNL_VF_CAP_ADV_LINK_SPEED in vf_cap_flags
>> parameter
>> + * in virtchnl_vf_resource struct and can be used to
>> determine
>> + * which link event struct to use below.
>> + */
>>   struct {
>>   enum virtchnl_link_speed link_speed;
>>   bool link_status;
>>   } link_event;
>> +struct {
>> +/* link_speed provided in Mbps */
>> +u32 link_speed;
>> +u8 link_status;
>> +} link_event_adv;
>>   } event_data;
>>
>>   int severity;
>> diff --git a/drivers/net/i40e/i40e_ethdev_vf.c
>> b/drivers/net/i40e/i40e_ethdev_vf.c
>> index 69cab8e73..f8cf45fbe 100644
>> --- a/drivers/net/i40e/i40e_ethdev_vf.c
>> +++ b/drivers/net/i40e/i40e_ethdev_vf.c
>> @@ -1386,8 +1386,46 @@ i40evf_handle_pf_event(struct rte_eth_dev *dev,
>> uint8_t *msg,
>>   break;
>>   case VIRTCHNL_EVENT_LINK_CHANGE:
>>   PMD_DRV_LOG(DEBUG, "VIRTCHNL_EVENT_LINK_CHANGE
>> event");
>> -vf->link_up = pf_msg->event_data.link_event.link_status;
>> -vf->link_speed = pf_msg-
>>> event_data.link_event.link_speed;
>> +
>> +if (vf->vf_res->vf_cap_flags &
>> VIRTCHNL_VF_CAP_ADV_LINK_SPEED) {
>> +vf->link_up =
>> +pf_msg-
>>> event_data.link_event_adv.link_status;
>> +
>> +switch (pf_msg-
>>> event_data.link_event_adv.link_speed) {
>> +case ETH_SPEED_NUM_100M:
>> +vf->link_speed = I40E_LINK_SPEED_100MB;
>> +break;
>> +case ETH_SPEED_NUM_1G:
>> +vf->link_speed = I40E_LINK_SPEED_1GB;
>> +break;
>> +case ETH_SPEED_NUM_2_5G:
>> +vf->link_speed = I40E_LINK_SPEED_2_5GB;
>> +break;
>> +case ETH_SPEED_NUM_5G:
>> +vf->link_speed = I40E_LINK_SPEED_5GB;
>> +break;
>> +case ETH_SPEED_NUM_10G:
>> +vf->link_speed = I40E_LINK_SPEED_10GB;
>> +break;
>> +case ETH_SPEED_NUM_20G:
>> +vf->link_speed = I40E_LINK_SPEED_20GB;
>> +break;
>> +case ETH_SPEED_NUM_25G:
>> +vf->link_speed = I40E_LINK_SPEED_25GB;
>> +break;
>> +case ETH_SPEED_NUM_40G:
>> +vf->link_speed = I40E_LINK_SPEED_40GB;
>> +break;
>> +default:
>> +vf->link_speed =
>> I40E_LINK_SPEED_UNKNOWN;
>> +break;
>> +}
>> +} else {
>> +vf->link_up =
>> +pf_msg->event_data.link_event.link_status;
>> +vf->link_speed =
>> +pf_msg->event_data.link_event.link_speed;
>> +}
>>   break;
>>   case VIRTCHNL_EVENT_PF_DRIVER_CLOSE:
>>   PMD_DRV_LOG(DEBUG,
>> "VIRTCHNL_EVENT_PF_DRIVER_CLOSE event");
>> --
>> 2.17.1