ip-link: Support printing VF trust setting

This adds a new item to VF lines of a PF, stating whether the VF is
trusted or not.
Signed-off-by: Phil Sutter <phil@nwl.cc>

ip/ipaddress.c

@@ -380,6 +380,13 @@ static void print_vfinfo(FILE *fp, struct rtattr *vfinfo)
 		else
 			fprintf(fp, ", link-state disable");
 	}
+	if (vf[IFLA_VF_TRUST]) {
+		struct ifla_vf_trust *vf_trust = RTA_DATA(vf[IFLA_VF_TRUST]);
+
+		if (vf_trust->setting != -1)
+			fprintf(fp, ", trust %s",
+			        vf_trust->setting ? "on" : "off");
+	}
 	if (vf[IFLA_VF_STATS] && show_stats)
 		print_vf_stats64(fp, vf[IFLA_VF_STATS]);
 }