nfp: avoid unnecessary check warnings in nfp_app_get_vf_config

nfp_net_sriov_check is added in nfp_app_get_vf_config which intends
to ensure ivi->vlan_proto and ivi->max_tx_rate/min_tx_rate can be
read from VF config table only when firmware supports corresponding
capability.

However, "nfp_app_get_vf_config" can be called by commands like
"ip a", "ip link set $DEV up" and "ip link set $DEV vf $NUM vlan
$param" (with VF). When using commands above, many warnings
"ndo_set_vf_<cap_x> not supported" would appear if firmware doesn't
support VF rate limit and 802.1ad VLAN assingment. If more VFs are
created, things could get worse.

Thus, this patch add an extra bool parameter for nfp_net_sriov_check
to enable/disable the cap check warning report. Unnecessary warnings
in nfp_app_get_vf_config can be avoided. Valid warnings in kinds of
vf setting function can be reserved.

Fixes: e0d0e1fd ("nfp: VF rate limit support")
Fixes: 59359597 ("nfp: support 802.1ad VLAN assingment to VF")
Signed-off-by: Fei Qin <fei.qin@corigine.com>
Signed-off-by: Yinjun Zhang <yinjun.zhang@corigine.com>
Signed-off-by: Louis Peens <louis.peens@corigine.com>
Signed-off-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/netronome/nfp/nfp_net_sriov.c

@@ -15,7 +15,7 @@
 #include "nfp_net_sriov.h"
 
 static int
-nfp_net_sriov_check(struct nfp_app *app, int vf, u16 cap, const char *msg)
+nfp_net_sriov_check(struct nfp_app *app, int vf, u16 cap, const char *msg, bool warn)
 {
 	u16 cap_vf;
 
@@ -24,12 +24,14 @@ nfp_net_sriov_check(struct nfp_app *app, int vf, u16 cap, const char *msg)
 
 	cap_vf = readw(app->pf->vfcfg_tbl2 + NFP_NET_VF_CFG_MB_CAP);
 	if ((cap_vf & cap) != cap) {
-		nfp_warn(app->pf->cpp, "ndo_set_vf_%s not supported\n", msg);
+		if (warn)
+			nfp_warn(app->pf->cpp, "ndo_set_vf_%s not supported\n", msg);
 		return -EOPNOTSUPP;
 	}
 
 	if (vf < 0 || vf >= app->pf->num_vfs) {
-		nfp_warn(app->pf->cpp, "invalid VF id %d\n", vf);
+		if (warn)
+			nfp_warn(app->pf->cpp, "invalid VF id %d\n", vf);
 		return -EINVAL;
 	}
 
@@ -65,7 +67,7 @@ int nfp_app_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
 	unsigned int vf_offset;
 	int err;
 
-	err = nfp_net_sriov_check(app, vf, NFP_NET_VF_CFG_MB_CAP_MAC, "mac");
+	err = nfp_net_sriov_check(app, vf, NFP_NET_VF_CFG_MB_CAP_MAC, "mac", true);
 	if (err)
 		return err;
 
@@ -101,7 +103,7 @@ int nfp_app_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos,
 	u32 vlan_tag;
 	int err;
 
-	err = nfp_net_sriov_check(app, vf, NFP_NET_VF_CFG_MB_CAP_VLAN, "vlan");
+	err = nfp_net_sriov_check(app, vf, NFP_NET_VF_CFG_MB_CAP_VLAN, "vlan", true);
 	if (err)
 		return err;
 
@@ -115,7 +117,7 @@ int nfp_app_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos,
 	}
 
 	/* Check if fw supports or not */
-	err = nfp_net_sriov_check(app, vf, NFP_NET_VF_CFG_MB_CAP_VLAN_PROTO, "vlan_proto");
+	err = nfp_net_sriov_check(app, vf, NFP_NET_VF_CFG_MB_CAP_VLAN_PROTO, "vlan_proto", true);
 	if (err)
 		is_proto_sup = false;
 
@@ -149,7 +151,7 @@ int nfp_app_set_vf_rate(struct net_device *netdev, int vf,
 	u32 vf_offset, ratevalue;
 	int err;
 
-	err = nfp_net_sriov_check(app, vf, NFP_NET_VF_CFG_MB_CAP_RATE, "rate");
+	err = nfp_net_sriov_check(app, vf, NFP_NET_VF_CFG_MB_CAP_RATE, "rate", true);
 	if (err)
 		return err;
 
@@ -181,7 +183,7 @@ int nfp_app_set_vf_spoofchk(struct net_device *netdev, int vf, bool enable)
 	int err;
 
 	err = nfp_net_sriov_check(app, vf, NFP_NET_VF_CFG_MB_CAP_SPOOF,
-				  "spoofchk");
+				  "spoofchk", true);
 	if (err)
 		return err;
 
@@ -205,7 +207,7 @@ int nfp_app_set_vf_trust(struct net_device *netdev, int vf, bool enable)
 	int err;
 
 	err = nfp_net_sriov_check(app, vf, NFP_NET_VF_CFG_MB_CAP_TRUST,
-				  "trust");
+				  "trust", true);
 	if (err)
 		return err;
 
@@ -230,7 +232,7 @@ int nfp_app_set_vf_link_state(struct net_device *netdev, int vf,
 	int err;
 
 	err = nfp_net_sriov_check(app, vf, NFP_NET_VF_CFG_MB_CAP_LINK_STATE,
-				  "link_state");
+				  "link_state", true);
 	if (err)
 		return err;
 
@@ -265,7 +267,7 @@ int nfp_app_get_vf_config(struct net_device *netdev, int vf,
 	u8 flags;
 	int err;
 
-	err = nfp_net_sriov_check(app, vf, 0, "");
+	err = nfp_net_sriov_check(app, vf, 0, "", true);
 	if (err)
 		return err;
 
@@ -285,13 +287,13 @@ int nfp_app_get_vf_config(struct net_device *netdev, int vf,
 
 	ivi->vlan = FIELD_GET(NFP_NET_VF_CFG_VLAN_VID, vlan_tag);
 	ivi->qos = FIELD_GET(NFP_NET_VF_CFG_VLAN_QOS, vlan_tag);
-	if (!nfp_net_sriov_check(app, vf, NFP_NET_VF_CFG_MB_CAP_VLAN_PROTO, "vlan_proto"))
+	if (!nfp_net_sriov_check(app, vf, NFP_NET_VF_CFG_MB_CAP_VLAN_PROTO, "vlan_proto", false))
 		ivi->vlan_proto = htons(FIELD_GET(NFP_NET_VF_CFG_VLAN_PROT, vlan_tag));
 	ivi->spoofchk = FIELD_GET(NFP_NET_VF_CFG_CTRL_SPOOF, flags);
 	ivi->trusted = FIELD_GET(NFP_NET_VF_CFG_CTRL_TRUST, flags);
 	ivi->linkstate = FIELD_GET(NFP_NET_VF_CFG_CTRL_LINK_STATE, flags);
 
-	err = nfp_net_sriov_check(app, vf, NFP_NET_VF_CFG_MB_CAP_RATE, "rate");
+	err = nfp_net_sriov_check(app, vf, NFP_NET_VF_CFG_MB_CAP_RATE, "rate", false);
 	if (!err) {
 		rate = readl(app->pf->vfcfg_tbl2 + vf_offset +
 			     NFP_NET_VF_CFG_RATE);