dpdk: allow configure individual VMBUS devices
now startup.conf supports confuguration for VMBUS
devices as for PCI devices for whitelisting/blacklisting
dpdk { dev fa5a6e7a-cf3a-4b98-9569-addb479b84bc }
with sub-configuration as for PCI devices
dpdk { blacklist fa5a6e7a-cf3a-4b98-9569-addb479b84bc }
where fa5a6e7a-cf3a-4b98-9569-addb479b84bc - example of UUID
struct vlib_vmbus_addr_t changed to union with UUID described
fields
Added device_config_index_by_vmbus_addr
blacklist_by_vmbus_addr
to enumerate available device configs
hash_key is as_u32[0] field(last 4 bytes of UUID)
Lost of precision against full UUID, but 2^32 is enough
to handle all the devices available
Added is_blacklisted check while creating vnet devices in
order to supress creation of dev if it's blacklisted
Type: feature
Signed-off-by: Vladimir Ratnikov <vratnikov@netgate.com>
Change-Id: Id82611e54fed082190e488c7e5fbe14ecbe5b2ab
diff --git a/src/vlib/linux/vmbus.c b/src/vlib/linux/vmbus.c
index 2fc438b..d50b539 100644
--- a/src/vlib/linux/vmbus.c
+++ b/src/vlib/linux/vmbus.c
@@ -118,8 +118,8 @@
* "f2c086b2-ff2e-11e8-88de-7bad0a57de05" and convert
* it to u8[16]
*/
-static uword
-unformat_vlib_vmbus_addr (unformat_input_t * input, va_list * args)
+uword
+unformat_vlib_vmbus_addr (unformat_input_t *input, va_list *args)
{
vlib_vmbus_addr_t *addr = va_arg (*args, vlib_vmbus_addr_t *);
uword ret = 0;
@@ -137,8 +137,8 @@
}
/* Convert bus address to standard UUID string */
-static u8 *
-format_vlib_vmbus_addr (u8 * s, va_list * va)
+u8 *
+format_vlib_vmbus_addr (u8 *s, va_list *va)
{
vlib_vmbus_addr_t *addr = va_arg (*va, vlib_vmbus_addr_t *);
char tmp[40];
@@ -297,15 +297,21 @@
vec_reset_length (s);
s = format (s, "%s/%s/new_id%c", sysfs_vmbus_drv_path, uio_drv_name, 0);
error = clib_sysfs_write ((char *) s, "%s", netvsc_uuid);
-
+ /* If device already exists, we can bind/unbind/override driver */
if (error)
{
- close (fd);
- goto done;
+ if (error->code == EEXIST)
+ {
+ clib_error_free (error);
+ }
+ else
+ {
+ close (fd);
+ goto done;
+ }
}
uio_new_id_needed = 0;
-
}
error = vlib_vmbus_raise_lower (fd, ifname);