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Commit 055b295d authored by Mitch Williams's avatar Mitch Williams Committed by Jeff Kirsher
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i40e: notify VFs of link state 



Gratuitously notify VFs of link state when they activate their queues.
In general, this is the last thing that a VF driver will do as it opens
its interface, so this is a good time to notify the VF.

Currently, VF devices assume link is up unless told otherwise, which
means that VFs instantiated on a PF with no link will report the wrong
state. This change corrects that issue.

Change-ID: Iea53622904ecc681ac3f8938d81c30033ef9a0a6
Signed-off-by: default avatarMitch Williams <mitch.a.williams@intel.com>
Tested-by: default avatarJim Young <james.m.young@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
parent ed636960

drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c

+31 −19
Original line number Diff line number Diff line
@@ -25,6 +25,7 @@ 
 ******************************************************************************/



#include "i40e.h"

static void i40e_vc_notify_vf_link_state(struct i40e_vf *vf);



/***********************misc routines*****************************/
@@ -1767,6 +1768,7 @@ int i40e_vc_process_vf_msg(struct i40e_pf *pf, u16 vf_id, u32 v_opcode, 
		break;

	case I40E_VIRTCHNL_OP_ENABLE_QUEUES:

		ret = i40e_vc_enable_queues_msg(vf, msg, msglen);

		i40e_vc_notify_vf_link_state(vf);

		break;

	case I40E_VIRTCHNL_OP_DISABLE_QUEUES:

		ret = i40e_vc_disable_queues_msg(vf, msg, msglen);
@@ -1875,22 +1877,20 @@ static void i40e_vc_vf_broadcast(struct i40e_pf *pf, 


/**

 * i40e_vc_notify_link_state

 * @pf: pointer to the PF structure

 * @vf: pointer to the VF structure

 *

 * send a link status message to all VFs on a given PF

 * send a link status message to a single VF

 **/

void i40e_vc_notify_link_state(struct i40e_pf *pf)

static void i40e_vc_notify_vf_link_state(struct i40e_vf *vf)

{

	struct i40e_virtchnl_pf_event pfe;

	struct i40e_pf *pf = vf->pf;

	struct i40e_hw *hw = &pf->hw;

	struct i40e_vf *vf = pf->vf;

	struct i40e_link_status *ls = &pf->hw.phy.link_info;

	int i;

	int abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;



	pfe.event = I40E_VIRTCHNL_EVENT_LINK_CHANGE;

	pfe.severity = I40E_PF_EVENT_SEVERITY_INFO;

	for (i = 0; i < pf->num_alloc_vfs; i++, vf++) {

		int abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;

	if (vf->link_forced) {

		pfe.event_data.link_event.link_status = vf->link_up;

		pfe.event_data.link_event.link_speed =
@@ -1901,9 +1901,21 @@ void i40e_vc_notify_link_state(struct i40e_pf *pf) 
		pfe.event_data.link_event.link_speed = ls->link_speed;

	}

	i40e_aq_send_msg_to_vf(hw, abs_vf_id, I40E_VIRTCHNL_OP_EVENT,

				       0, (u8 *)&pfe, sizeof(pfe),

				       NULL);

			       0, (u8 *)&pfe, sizeof(pfe), NULL);

}



/**

 * i40e_vc_notify_link_state

 * @pf: pointer to the PF structure

 *

 * send a link status message to all VFs on a given PF

 **/

void i40e_vc_notify_link_state(struct i40e_pf *pf)

{

	int i;



	for (i = 0; i < pf->num_alloc_vfs; i++)

		i40e_vc_notify_vf_link_state(&pf->vf[i]);

}



/**