tap: fix tap interface not working on Arm issue

[vpp.git] / src / vnet / devices / tap / tap.c

diff --git a/src/vnet/devices/tap/tap.c b/src/vnet/devices/tap/tap.c
index 6c6d2ca..917bd10 100644 (file)
--- a/src/vnet/devices/tap/tap.c
+++ b/src/vnet/devices/tap/tap.c
@@ -31,6 +31,7 @@
 #include <linux/rtnetlink.h>
 
 #include <vlib/vlib.h>
+#include <vlib/physmem.h>
 #include <vlib/unix/unix.h>
 #include <vnet/ethernet/ethernet.h>
 #include <vnet/ip/ip4_packet.h>
@@ -112,6 +113,7 @@ open_netns_fd (char *netns)
 void
 tap_create_if (vlib_main_t * vm, tap_create_if_args_t * args)
 {
+  vlib_physmem_main_t *vpm = &vm->physmem_main;
   vnet_main_t *vnm = vnet_get_main ();
   virtio_main_t *vim = &virtio_main;
   tap_main_t *tm = &tap_main;
@@ -126,6 +128,7 @@ tap_create_if (vlib_main_t * vm, tap_create_if_args_t * args)
   clib_file_t t = { 0 };
   clib_error_t *err = 0;
   int fd = -1;
+  char *host_if_name = 0;
 
   if (args->id != ~0)
     {
@@ -208,7 +211,9 @@ tap_create_if (vlib_main_t * vm, tap_create_if_args_t * args)
   vif->ifindex = if_nametoindex (ifr.ifr_ifrn.ifrn_name);
 
   if (!args->host_if_name)
-    args->host_if_name = (void *) ifr.ifr_ifrn.ifrn_name;
+    host_if_name = ifr.ifr_ifrn.ifrn_name;
+  else
+    host_if_name = (char *) args->host_if_name;
 
   unsigned int offload = 0;
   hdrsz = sizeof (struct virtio_net_hdr_v1);
@@ -239,7 +244,7 @@ tap_create_if (vlib_main_t * vm, tap_create_if_args_t * args)
          goto error;
        }
       args->error = vnet_netlink_set_link_netns (vif->ifindex, fd,
-                                                (char *) args->host_if_name);
+                                                host_if_name);
       if (args->error)
        {
          args->rv = VNET_API_ERROR_NETLINK_ERROR;
@@ -252,21 +257,20 @@ tap_create_if (vlib_main_t * vm, tap_create_if_args_t * args)
                                                args->host_namespace);
          goto error;
        }
-      if ((vif->ifindex = if_nametoindex ((char *) args->host_if_name)) == 0)
+      if ((vif->ifindex = if_nametoindex (host_if_name)) == 0)
        {
          args->rv = VNET_API_ERROR_SYSCALL_ERROR_3;
          args->error = clib_error_return_unix (0, "if_nametoindex '%s'",
-                                               args->host_if_name);
+                                               host_if_name);
          goto error;
        }
     }
   else
     {
-      if (args->host_if_name)
+      if (host_if_name)
        {
          args->error = vnet_netlink_set_link_name (vif->ifindex,
-                                                   (char *)
-                                                   args->host_if_name);
+                                                   host_if_name);
          if (args->error)
            {
              args->rv = VNET_API_ERROR_NETLINK_ERROR;
@@ -389,7 +393,10 @@ tap_create_if (vlib_main_t * vm, tap_create_if_args_t * args)
   vhost_mem = clib_mem_alloc (i);
   clib_memset (vhost_mem, 0, i);
   vhost_mem->nregions = 1;
-  vhost_mem->regions[0].memory_size = (1ULL << 47) - 4096;
+  vhost_mem->regions[0].memory_size = vpm->max_size;
+  vhost_mem->regions[0].guest_phys_addr = vpm->base_addr;
+  vhost_mem->regions[0].userspace_addr =
+    vhost_mem->regions[0].guest_phys_addr;
   _IOCTL (vif->fd, VHOST_SET_MEM_TABLE, vhost_mem);
 
   if ((args->error =
@@ -413,7 +420,7 @@ tap_create_if (vlib_main_t * vm, tap_create_if_args_t * args)
 
   clib_memcpy (vif->mac_addr, args->mac_addr, 6);
 
-  vif->host_if_name = format (0, "%s%c", args->host_if_name, 0);
+  vif->host_if_name = format (0, "%s%c", host_if_name, 0);
   vif->net_ns = format (0, "%s%c", args->host_namespace, 0);
   vif->host_bridge = format (0, "%s%c", args->host_bridge, 0);
   vif->host_mtu_size = args->host_mtu_size;