From: Jesse Brandeburg <jesse.brandeburg@intel.com>
Date: Fri, 8 Nov 2019 06:23:27 -0800
Subject: ice: add helpers for virtchnl
Patch-mainline: v5.5-rc1
Git-commit: 4c66d227e424c23af2c1c90f397909394f782c02
References: jsc#SLE-7926

The virtchannel interface was repeating a lot of strings
and wasting storage space in the kernel.  There was also
inconsistent messages for the same thing.  Consolidate all
those messages and bit checks into a couple of helper functions.

Also, reduce stack space usage by simplifying getting the pointer
to the pf using a helper.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Co-developed-by: Brett Creeley <brett.creeley@intel.com>
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>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c |  134 ++++++++++-------------
 1 file changed, 63 insertions(+), 71 deletions(-)

--- a/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c
@@ -6,6 +6,35 @@
 #include "ice_lib.h"
 
 /**
+ * ice_validate_vf_id - helper to check if VF ID is valid
+ * @pf: pointer to the PF structure
+ * @vf_id: the ID of the VF to check
+ */
+static int ice_validate_vf_id(struct ice_pf *pf, int vf_id)
+{
+	if (vf_id >= pf->num_alloc_vfs) {
+		dev_err(ice_pf_to_dev(pf), "Invalid VF ID: %d\n", vf_id);
+		return -EINVAL;
+	}
+	return 0;
+}
+
+/**
+ * ice_check_vf_init - helper to check if VF init complete
+ * @pf: pointer to the PF structure
+ * @vf: the pointer to the VF to check
+ */
+static int ice_check_vf_init(struct ice_pf *pf, struct ice_vf *vf)
+{
+	if (!test_bit(ICE_VF_STATE_INIT, vf->vf_states)) {
+		dev_err(ice_pf_to_dev(pf), "VF ID: %d in reset. Try again.\n",
+			vf->vf_id);
+		return -EBUSY;
+	}
+	return 0;
+}
+
+/**
  * ice_err_to_virt err - translate errors for VF return code
  * @ice_err: error return code
  */
@@ -1302,9 +1331,13 @@ void ice_vc_notify_reset(struct ice_pf *
 static void ice_vc_notify_vf_reset(struct ice_vf *vf)
 {
 	struct virtchnl_pf_event pfe;
+	struct ice_pf *pf;
 
-	/* validate the request */
-	if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
+	if (!vf)
+		return;
+
+	pf = vf->pf;
+	if (ice_validate_vf_id(pf, vf->vf_id))
 		return;
 
 	/* Bail out if VF is in disabled state, neither initialized, nor active
@@ -1317,7 +1350,7 @@ static void ice_vc_notify_vf_reset(struc
 
 	pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING;
 	pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM;
-	ice_aq_send_msg_to_vf(&vf->pf->hw, vf->vf_id, VIRTCHNL_OP_EVENT,
+	ice_aq_send_msg_to_vf(&pf->hw, vf->vf_id, VIRTCHNL_OP_EVENT,
 			      VIRTCHNL_STATUS_SUCCESS, (u8 *)&pfe, sizeof(pfe),
 			      NULL);
 }
@@ -1544,11 +1577,12 @@ ice_vc_send_msg_to_vf(struct ice_vf *vf,
 	struct device *dev;
 	struct ice_pf *pf;
 
-	/* validate the request */
-	if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
+	if (!vf)
 		return -EINVAL;
 
 	pf = vf->pf;
+	if (ice_validate_vf_id(pf, vf->vf_id))
+		return -EINVAL;
 
 	dev = ice_pf_to_dev(pf);
 
@@ -1622,7 +1656,7 @@ static int ice_vc_get_vf_res_msg(struct
 	int len = 0;
 	int ret;
 
-	if (!test_bit(ICE_VF_STATE_INIT, vf->vf_states)) {
+	if (ice_check_vf_init(pf, vf)) {
 		v_ret = VIRTCHNL_STATUS_ERR_PARAM;
 		goto err;
 	}
@@ -1801,7 +1835,7 @@ static int ice_vc_config_rss_key(struct
 	struct virtchnl_rss_key *vrk =
 		(struct virtchnl_rss_key *)msg;
 	struct ice_pf *pf = vf->pf;
-	struct ice_vsi *vsi = NULL;
+	struct ice_vsi *vsi;
 
 	if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
 		v_ret = VIRTCHNL_STATUS_ERR_PARAM;
@@ -1848,7 +1882,7 @@ static int ice_vc_config_rss_lut(struct
 	struct virtchnl_rss_lut *vrl = (struct virtchnl_rss_lut *)msg;
 	enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
 	struct ice_pf *pf = vf->pf;
-	struct ice_vsi *vsi = NULL;
+	struct ice_vsi *vsi;
 
 	if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
 		v_ret = VIRTCHNL_STATUS_ERR_PARAM;
@@ -2597,19 +2631,15 @@ ice_set_vf_port_vlan(struct net_device *
 		     __be16 vlan_proto)
 {
 	u16 vlanprio = vlan_id | (qos << ICE_VLAN_PRIORITY_S);
-	struct ice_netdev_priv *np = netdev_priv(netdev);
-	struct ice_pf *pf = np->vsi->back;
+	struct ice_pf *pf = ice_netdev_to_pf(netdev);
 	struct ice_vsi *vsi;
 	struct device *dev;
 	struct ice_vf *vf;
 	int ret = 0;
 
 	dev = ice_pf_to_dev(pf);
-	/* validate the request */
-	if (vf_id >= pf->num_alloc_vfs) {
-		dev_err(dev, "invalid VF id: %d\n", vf_id);
+	if (ice_validate_vf_id(pf, vf_id))
 		return -EINVAL;
-	}
 
 	if (vlan_id > ICE_MAX_VLANID || qos > 7) {
 		dev_err(dev, "Invalid VF Parameters\n");
@@ -2623,10 +2653,8 @@ ice_set_vf_port_vlan(struct net_device *
 
 	vf = &pf->vf[vf_id];
 	vsi = pf->vsi[vf->lan_vsi_idx];
-	if (!test_bit(ICE_VF_STATE_INIT, vf->vf_states)) {
-		dev_err(dev, "VF %d in reset. Try again.\n", vf_id);
+	if (ice_check_vf_init(pf, vf))
 		return -EBUSY;
-	}
 
 	if (le16_to_cpu(vsi->info.pvid) == vlanprio) {
 		/* duplicate request, so just return success */
@@ -2984,7 +3012,7 @@ void ice_vc_process_vf_msg(struct ice_pf
 	int err = 0;
 
 	dev = ice_pf_to_dev(pf);
-	if (vf_id >= pf->num_alloc_vfs) {
+	if (ice_validate_vf_id(pf, vf_id)) {
 		err = -EINVAL;
 		goto error_handler;
 	}
@@ -3102,24 +3130,18 @@ error_handler:
 int
 ice_get_vf_cfg(struct net_device *netdev, int vf_id, struct ifla_vf_info *ivi)
 {
-	struct ice_netdev_priv *np = netdev_priv(netdev);
-	struct ice_vsi *vsi = np->vsi;
-	struct ice_pf *pf = vsi->back;
+	struct ice_pf *pf = ice_netdev_to_pf(netdev);
+	struct ice_vsi *vsi;
 	struct ice_vf *vf;
 
-	/* validate the request */
-	if (vf_id >= pf->num_alloc_vfs) {
-		netdev_err(netdev, "invalid VF id: %d\n", vf_id);
+	if (ice_validate_vf_id(pf, vf_id))
 		return -EINVAL;
-	}
 
 	vf = &pf->vf[vf_id];
 	vsi = pf->vsi[vf->lan_vsi_idx];
 
-	if (!test_bit(ICE_VF_STATE_INIT, vf->vf_states)) {
-		netdev_err(netdev, "VF %d in reset. Try again.\n", vf_id);
+	if (ice_check_vf_init(pf, vf))
 		return -EBUSY;
-	}
 
 	ivi->vf = vf_id;
 	ether_addr_copy(ivi->mac, vf->dflt_lan_addr.addr);
@@ -3152,9 +3174,8 @@ ice_get_vf_cfg(struct net_device *netdev
  */
 int ice_set_vf_spoofchk(struct net_device *netdev, int vf_id, bool ena)
 {
-	struct ice_netdev_priv *np = netdev_priv(netdev);
-	struct ice_vsi *vsi = np->vsi;
-	struct ice_pf *pf = vsi->back;
+	struct ice_pf *pf = ice_netdev_to_pf(netdev);
+	struct ice_vsi *vsi = pf->vsi[0];
 	struct ice_vsi_ctx *ctx;
 	enum ice_status status;
 	struct device *dev;
@@ -3162,18 +3183,12 @@ int ice_set_vf_spoofchk(struct net_devic
 	int ret = 0;
 
 	dev = ice_pf_to_dev(pf);
-
-	/* validate the request */
-	if (vf_id >= pf->num_alloc_vfs) {
-		netdev_err(netdev, "invalid VF id: %d\n", vf_id);
+	if (ice_validate_vf_id(pf, vf_id))
 		return -EINVAL;
-	}
 
 	vf = &pf->vf[vf_id];
-	if (!test_bit(ICE_VF_STATE_INIT, vf->vf_states)) {
-		netdev_err(netdev, "VF %d in reset. Try again.\n", vf_id);
+	if (ice_check_vf_init(pf, vf))
 		return -EBUSY;
-	}
 
 	if (ena == vf->spoofchk) {
 		dev_dbg(dev, "VF spoofchk already %s\n",
@@ -3235,17 +3250,12 @@ static void ice_wait_on_vf_reset(struct
  */
 int ice_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac)
 {
-	struct ice_netdev_priv *np = netdev_priv(netdev);
-	struct ice_vsi *vsi = np->vsi;
-	struct ice_pf *pf = vsi->back;
+	struct ice_pf *pf = ice_netdev_to_pf(netdev);
 	struct ice_vf *vf;
 	int ret = 0;
 
-	/* validate the request */
-	if (vf_id >= pf->num_alloc_vfs) {
-		netdev_err(netdev, "invalid VF id: %d\n", vf_id);
+	if (ice_validate_vf_id(pf, vf_id))
 		return -EINVAL;
-	}
 
 	vf = &pf->vf[vf_id];
 	/* Don't set MAC on disabled VF */
@@ -3257,10 +3267,8 @@ int ice_set_vf_mac(struct net_device *ne
 	 */
 	ice_wait_on_vf_reset(vf);
 
-	if (!test_bit(ICE_VF_STATE_INIT, vf->vf_states)) {
-		netdev_err(netdev, "VF %d in reset. Try again.\n", vf_id);
+	if (ice_check_vf_init(pf, vf))
 		return -EBUSY;
-	}
 
 	if (is_zero_ether_addr(mac) || is_multicast_ether_addr(mac)) {
 		netdev_err(netdev, "%pM not a valid unicast address\n", mac);
@@ -3292,19 +3300,13 @@ int ice_set_vf_mac(struct net_device *ne
  */
 int ice_set_vf_trust(struct net_device *netdev, int vf_id, bool trusted)
 {
-	struct ice_netdev_priv *np = netdev_priv(netdev);
-	struct ice_vsi *vsi = np->vsi;
-	struct ice_pf *pf = vsi->back;
+	struct ice_pf *pf = ice_netdev_to_pf(netdev);
 	struct device *dev;
 	struct ice_vf *vf;
 
 	dev = ice_pf_to_dev(pf);
-
-	/* validate the request */
-	if (vf_id >= pf->num_alloc_vfs) {
-		dev_err(dev, "invalid VF id: %d\n", vf_id);
+	if (ice_validate_vf_id(pf, vf_id))
 		return -EINVAL;
-	}
 
 	vf = &pf->vf[vf_id];
 	/* Don't set Trusted Mode on disabled VF */
@@ -3316,10 +3318,8 @@ int ice_set_vf_trust(struct net_device *
 	 */
 	ice_wait_on_vf_reset(vf);
 
-	if (!test_bit(ICE_VF_STATE_INIT, vf->vf_states)) {
-		dev_err(dev, "VF %d in reset. Try again.\n", vf_id);
+	if (ice_check_vf_init(pf, vf))
 		return -EBUSY;
-	}
 
 	/* Check if already trusted */
 	if (trusted == vf->trusted)
@@ -3343,29 +3343,21 @@ int ice_set_vf_trust(struct net_device *
  */
 int ice_set_vf_link_state(struct net_device *netdev, int vf_id, int link_state)
 {
-	struct ice_netdev_priv *np = netdev_priv(netdev);
-	struct ice_pf *pf = np->vsi->back;
+	struct ice_pf *pf = ice_netdev_to_pf(netdev);
 	struct virtchnl_pf_event pfe = { 0 };
 	struct ice_link_status *ls;
-	struct device *dev;
 	struct ice_vf *vf;
 	struct ice_hw *hw;
 
-	dev = ice_pf_to_dev(pf);
-
-	if (vf_id >= pf->num_alloc_vfs) {
-		dev_err(dev, "Invalid VF Identifier %d\n", vf_id);
+	if (ice_validate_vf_id(pf, vf_id))
 		return -EINVAL;
-	}
 
 	vf = &pf->vf[vf_id];
 	hw = &pf->hw;
 	ls = &pf->hw.port_info->phy.link_info;
 
-	if (!test_bit(ICE_VF_STATE_INIT, vf->vf_states)) {
-		dev_err(dev, "vf %d in reset. Try again.\n", vf_id);
+	if (ice_check_vf_init(pf, vf))
 		return -EBUSY;
-	}
 
 	pfe.event = VIRTCHNL_EVENT_LINK_CHANGE;
 	pfe.severity = PF_EVENT_SEVERITY_INFO;