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Message-Id: <20220314181016.1690595-22-anthony.l.nguyen@intel.com>
Date: Mon, 14 Mar 2022 11:10:12 -0700
From: Tony Nguyen <anthony.l.nguyen@...el.com>
To: davem@...emloft.net, kuba@...nel.org
Cc: Jacob Keller <jacob.e.keller@...el.com>, netdev@...r.kernel.org,
anthony.l.nguyen@...el.com,
Konrad Jankowski <konrad0.jankowski@...el.com>
Subject: [PATCH net-next 21/25] ice: introduce ICE_VF_RESET_NOTIFY flag
From: Jacob Keller <jacob.e.keller@...el.com>
In some cases of resetting a VF, the PF would like to first notify the
VF that a reset is impending. This is currently done via
ice_vc_notify_vf_reset. A wrapper to ice_reset_vf, ice_vf_reset_vf, is
used to call this function first before calling ice_reset_vf.
In fact, every single call to ice_vc_notify_vf_reset occurs just prior
to a call to ice_vc_reset_vf.
Now that ice_reset_vf has flags, replace this separate call with an
ICE_VF_RESET_NOTIFY flag. This removes an unnecessary exported function
of ice_vc_notify_vf_reset, and also makes there be a single function to
reset VFs (ice_reset_vf).
Signed-off-by: Jacob Keller <jacob.e.keller@...el.com>
Tested-by: Konrad Jankowski <konrad0.jankowski@...el.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>
---
drivers/net/ethernet/intel/ice/ice_sriov.c | 44 +++------------------
drivers/net/ethernet/intel/ice/ice_vf_lib.c | 28 +++++++++++++
drivers/net/ethernet/intel/ice/ice_vf_lib.h | 1 +
3 files changed, 34 insertions(+), 39 deletions(-)
diff --git a/drivers/net/ethernet/intel/ice/ice_sriov.c b/drivers/net/ethernet/intel/ice/ice_sriov.c
index c234e4edc7f0..46d656d385c4 100644
--- a/drivers/net/ethernet/intel/ice/ice_sriov.c
+++ b/drivers/net/ethernet/intel/ice/ice_sriov.c
@@ -829,30 +829,6 @@ void ice_vc_notify_reset(struct ice_pf *pf)
(u8 *)&pfe, sizeof(struct virtchnl_pf_event));
}
-/**
- * ice_vc_notify_vf_reset - Notify VF of a reset event
- * @vf: pointer to the VF structure
- */
-static void ice_vc_notify_vf_reset(struct ice_vf *vf)
-{
- struct virtchnl_pf_event pfe;
- struct ice_pf *pf = vf->pf;
-
- /* Bail out if VF is in disabled state, neither initialized, nor active
- * state - otherwise proceed with notifications
- */
- if ((!test_bit(ICE_VF_STATE_INIT, vf->vf_states) &&
- !test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) ||
- test_bit(ICE_VF_STATE_DIS, vf->vf_states))
- return;
-
- pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
- pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
- ice_aq_send_msg_to_vf(&pf->hw, vf->vf_id, VIRTCHNL_OP_EVENT,
- VIRTCHNL_STATUS_SUCCESS, (u8 *)&pfe, sizeof(pfe),
- NULL);
-}
-
/**
* ice_init_vf_vsi_res - initialize/setup VF VSI resources
* @vf: VF to initialize/setup the VSI for
@@ -1400,16 +1376,6 @@ void ice_process_vflr_event(struct ice_pf *pf)
mutex_unlock(&pf->vfs.table_lock);
}
-/**
- * ice_vc_reset_vf - Perform software reset on the VF after informing the AVF
- * @vf: pointer to the VF info
- */
-static void ice_vc_reset_vf(struct ice_vf *vf)
-{
- ice_vc_notify_vf_reset(vf);
- ice_reset_vf(vf, 0);
-}
-
/**
* ice_get_vf_from_pfq - get the VF who owns the PF space queue passed in
* @pf: PF used to index all VFs
@@ -1488,7 +1454,7 @@ ice_vf_lan_overflow_event(struct ice_pf *pf, struct ice_rq_event_info *event)
return;
mutex_lock(&vf->cfg_lock);
- ice_vc_reset_vf(vf);
+ ice_reset_vf(vf, ICE_VF_RESET_NOTIFY);
mutex_unlock(&vf->cfg_lock);
ice_put_vf(vf);
@@ -3311,7 +3277,7 @@ static int ice_vc_request_qs_msg(struct ice_vf *vf, u8 *msg)
} else {
/* request is successful, then reset VF */
vf->num_req_qs = req_queues;
- ice_vc_reset_vf(vf);
+ ice_reset_vf(vf, ICE_VF_RESET_NOTIFY);
dev_info(dev, "VF %d granted request of %u queues.\n",
vf->vf_id, req_queues);
return 0;
@@ -5183,7 +5149,7 @@ int ice_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac)
mac, vf_id);
}
- ice_vc_reset_vf(vf);
+ ice_reset_vf(vf, ICE_VF_RESET_NOTIFY);
mutex_unlock(&vf->cfg_lock);
out_put_vf:
@@ -5227,7 +5193,7 @@ int ice_set_vf_trust(struct net_device *netdev, int vf_id, bool trusted)
mutex_lock(&vf->cfg_lock);
vf->trusted = trusted;
- ice_vc_reset_vf(vf);
+ ice_reset_vf(vf, ICE_VF_RESET_NOTIFY);
dev_info(ice_pf_to_dev(pf), "VF %u is now %strusted\n",
vf_id, trusted ? "" : "un");
@@ -5549,7 +5515,7 @@ ice_set_vf_port_vlan(struct net_device *netdev, int vf_id, u16 vlan_id, u8 qos,
else
dev_info(dev, "Clearing port VLAN on VF %d\n", vf_id);
- ice_vc_reset_vf(vf);
+ ice_reset_vf(vf, ICE_VF_RESET_NOTIFY);
mutex_unlock(&vf->cfg_lock);
out_put_vf:
diff --git a/drivers/net/ethernet/intel/ice/ice_vf_lib.c b/drivers/net/ethernet/intel/ice/ice_vf_lib.c
index 3b4e55c62786..dce32bc194a0 100644
--- a/drivers/net/ethernet/intel/ice/ice_vf_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_vf_lib.c
@@ -441,6 +441,30 @@ void ice_reset_all_vfs(struct ice_pf *pf)
mutex_unlock(&pf->vfs.table_lock);
}
+/**
+ * ice_notify_vf_reset - Notify VF of a reset event
+ * @vf: pointer to the VF structure
+ */
+static void ice_notify_vf_reset(struct ice_vf *vf)
+{
+ struct ice_hw *hw = &vf->pf->hw;
+ struct virtchnl_pf_event pfe;
+
+ /* Bail out if VF is in disabled state, neither initialized, nor active
+ * state - otherwise proceed with notifications
+ */
+ if ((!test_bit(ICE_VF_STATE_INIT, vf->vf_states) &&
+ !test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) ||
+ test_bit(ICE_VF_STATE_DIS, vf->vf_states))
+ return;
+
+ pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
+ pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
+ ice_aq_send_msg_to_vf(hw, vf->vf_id, VIRTCHNL_OP_EVENT,
+ VIRTCHNL_STATUS_SUCCESS, (u8 *)&pfe, sizeof(pfe),
+ NULL);
+}
+
/**
* ice_reset_vf - Reset a particular VF
* @vf: pointer to the VF structure
@@ -448,6 +472,7 @@ void ice_reset_all_vfs(struct ice_pf *pf)
*
* Flags:
* ICE_VF_RESET_VFLR - Indicates a reset is due to VFLR event
+ * ICE_VF_RESET_NOTIFY - Send VF a notification prior to reset
*
* Returns 0 if the VF is currently in reset, if the resets are disabled, or
* if the VF resets successfully. Returns an error code if the VF fails to
@@ -467,6 +492,9 @@ int ice_reset_vf(struct ice_vf *vf, u32 flags)
dev = ice_pf_to_dev(pf);
hw = &pf->hw;
+ if (flags & ICE_VF_RESET_NOTIFY)
+ ice_notify_vf_reset(vf);
+
if (test_bit(ICE_VF_RESETS_DISABLED, pf->state)) {
dev_dbg(dev, "Trying to reset VF %d, but all VF resets are disabled\n",
vf->vf_id);
diff --git a/drivers/net/ethernet/intel/ice/ice_vf_lib.h b/drivers/net/ethernet/intel/ice/ice_vf_lib.h
index 071b7f99e2d9..efa523b25bf8 100644
--- a/drivers/net/ethernet/intel/ice/ice_vf_lib.h
+++ b/drivers/net/ethernet/intel/ice/ice_vf_lib.h
@@ -136,6 +136,7 @@ struct ice_vf {
/* Flags for controlling behavior of ice_reset_vf */
enum ice_vf_reset_flags {
ICE_VF_RESET_VFLR = BIT(0), /* Indicate a VFLR reset */
+ ICE_VF_RESET_NOTIFY = BIT(1), /* Notify VF prior to reset */
};
static inline u16 ice_vf_get_port_vlan_id(struct ice_vf *vf)
--
2.31.1
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