Patch that allows setting the viona feature mask

bhyve-boot.patch

diff --git a/usr/src/lib/brand/bhyve/zone/boot.c b/usr/src/lib/brand/bhyve/zone/boot.c
index 6e6f3dc640..e1c063d87e 100644
--- a/usr/src/lib/brand/bhyve/zone/boot.c
+++ b/usr/src/lib/brand/bhyve/zone/boot.c
@@ -82,6 +82,23 @@ get_zcfg_var(const char *rsrc, const char *inst, const char *prop)
        return (ret);
 }

+static long
+viona_feature_mask(const char *inst)
+{
+       char *val;
+       long num;
+
+       if ((val = get_zcfg_var("net", inst, "feature_mask")) == NULL)
+               return 0;
+
+       errno = 0;
+       num = strtol(val, NULL, 0);
+       if (errno != 0 || num < 0)
+               return 0;
+
+       return num;
+}
+
 static boolean_t
 is_env_true(const char *rsrc, const char *inst, const char *prop)
 {
@@ -381,6 +398,7 @@ add_nets(int *argc, char **argv)
        int nextpcifn = 1;              /* 0 reserved for primary */
        char slotconf[MAXNAMELEN];
        char *primary = NULL;
+       long fmask;

        if ((nets = get_zcfg_var("net", "resources", NULL)) == NULL) {
                return (0);
@@ -410,9 +428,11 @@ add_nets(int *argc, char **argv)
                        nextpcifn++;
                }

+               fmask = viona_feature_mask(net);
+
                if (snprintf(slotconf, sizeof (slotconf),
-                   "%d:%d,virtio-net-viona,%s", PCI_SLOT_NICS, pcifn, net) >=
-                   sizeof (slotconf)) {
+                   "%d:%d,virtio-net-viona,%s,feature_mask=%lu", PCI_SLOT_NICS,
+                   pcifn, net, fmask) >= sizeof (slotconf)) {
                        (void) printf("Error: net '%s' too long\n", net);
                        return (-1);
                }