[PATCH AUTOSEL 5.6 058/149] ice: Add helper to determine if VF link is up

Sasha Levin
2020-04-11T23:47:41Z

From: Brett Creeley <brett.creeley@intel.com>

[ Upstream commit 0b6c6a8bb6d541aad9e0f3bb2307316707aec723 ]

The check for vf->link_up is incorrect because this field is only valid if
vf->link_forced is true. Fix this by adding the helper ice_is_vf_link_up()
to determine if the VF's link is up.

Signed-off-by: Brett Creeley <brett.creeley@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
.../net/ethernet/intel/ice/ice_virtchnl_pf.c | 42 +++++++++++--------
1 file changed, 25 insertions(+), 17 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c b/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c
index 75c70d432c724..5924924b464a4 100644
--- a/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c
@@ -90,6 +90,26 @@ ice_set_pfe_link(struct ice_vf *vf, struct virtchnl_pf_event *pfe,
}
}

+/**
+ * ice_is_vf_link_up - check if the VF's link is up
+ * @vf: VF to check if link is up
+ */
+static bool ice_is_vf_link_up(struct ice_vf *vf)
+{
+ struct ice_pf *pf = vf->pf;
+
+ if (ice_check_vf_init(pf, vf))
+ return false;
+
+ if (!vf->num_qs_ena)
+ return false;
+ else if (vf->link_forced)
+ return vf->link_up;
+ else
+ return pf->hw.port_info->phy.link_info.link_info &
+ ICE_AQ_LINK_UP;
+}
+
/**
* ice_vc_notify_vf_link_state - Inform a VF of link status
* @vf: pointer to the VF structure
@@ -99,28 +119,16 @@ ice_set_pfe_link(struct ice_vf *vf, struct virtchnl_pf_event *pfe,
static void ice_vc_notify_vf_link_state(struct ice_vf *vf)
{
struct virtchnl_pf_event pfe = { 0 };
- struct ice_link_status *ls;
- struct ice_pf *pf = vf->pf;
- struct ice_hw *hw;
-
- hw = &pf->hw;
- ls = &hw->port_info->phy.link_info;
+ struct ice_hw *hw = &vf->pf->hw;

pfe.event = VIRTCHNL_EVENT_LINK_CHANGE;
pfe.severity = PF_EVENT_SEVERITY_INFO;

- /* Always report link is down if the VF queues aren't enabled */
- if (!vf->num_qs_ena) {
+ if (ice_is_vf_link_up(vf))
+ ice_set_pfe_link(vf, &pfe,
+ hw->port_info->phy.link_info.link_speed, true);
+ else
ice_set_pfe_link(vf, &pfe, ICE_AQ_LINK_SPEED_UNKNOWN, false);
- } else if (vf->link_forced) {
- u16 link_speed = vf->link_up ?
- ls->link_speed : ICE_AQ_LINK_SPEED_UNKNOWN;
-
- ice_set_pfe_link(vf, &pfe, link_speed, vf->link_up);
- } else {
- ice_set_pfe_link(vf, &pfe, ls->link_speed,
- ls->link_info & ICE_AQ_LINK_UP);
- }

ice_aq_send_msg_to_vf(hw, vf->vf_id, VIRTCHNL_OP_EVENT,
VIRTCHNL_STATUS_SUCCESS, (u8 *)&pfe,
--
2.20.1