udev/net_id: don't generate slot based names if multiple devices might claim the same slot

src/shared/netif-naming-scheme.c

@@ -12,6 +12,7 @@ static const NamingScheme naming_schemes[] = {
         { "v241", NAMING_V241 },
         { "v243", NAMING_V243 },
         { "v245", NAMING_V245 },
+        { "v246", NAMING_V246 },
         /* … add more schemes here, as the logic to name devices is updated … */
 };
 

src/shared/netif-naming-scheme.h

@@ -31,6 +31,7 @@ typedef enum NamingSchemeFlags {
         NAMING_NETDEVSIM           = 1 << 6, /* Generate names for netdevsim devices, see eaa9d507d855 */
         NAMING_LABEL_NOPREFIX      = 1 << 7, /* Don't prepend ID_NET_LABEL_ONBOARD with interface type prefix */
         NAMING_NSPAWN_LONG_HASH    = 1 << 8, /* Shorten nspawn interfaces by including 24bit hash, instead of simple truncation  */
+        NAMING_BRIDGE_NO_SLOT      = 1 << 9, /* Don't use PCI hotplug slot information if the corresponding device is a PCI bridge */
 
         /* And now the masks that combine the features above */
         NAMING_V238 = 0,
@@ -39,6 +40,7 @@ typedef enum NamingSchemeFlags {
         NAMING_V241 = NAMING_V240 | NAMING_STABLE_VIRTUAL_MACS,
         NAMING_V243 = NAMING_V241 | NAMING_NETDEVSIM | NAMING_LABEL_NOPREFIX,
         NAMING_V245 = NAMING_V243 | NAMING_NSPAWN_LONG_HASH,
+        NAMING_V246 = NAMING_V245 | NAMING_BRIDGE_NO_SLOT,
 
         _NAMING_SCHEME_FLAGS_INVALID = -1,
 } NamingSchemeFlags;