libs/core: add more heuristics to infer device name from switch name

diff --git a/libs/core/luasrc/model/network.lua b/libs/core/luasrc/model/network.lua
index a85def89a2619d0189c92b8d1f611eec4e40378b..0267bb437cd93d6fa5b139959b8f9cbef073f775 100644 (file)
--- a/libs/core/luasrc/model/network.lua
+++ b/libs/core/luasrc/model/network.lua
@@ -20,6 +20,7 @@ limitations under the License.
 local type, next, pairs, ipairs, loadfile, table, tonumber, math, i18n
        = type, next, pairs, ipairs, loadfile, table, tonumber, math, luci.i18n
 
+local error = error
 local require = require
 
 local nxo = require "nixio"
@@ -449,6 +450,7 @@ function get_interfaces(self)
        local ifaces = { }
        local seen = { }
        local nfs = { }
+       local baseof = { }
 
        -- find normal interfaces
        _uci_real:foreach("network", "interface",
@@ -470,9 +472,26 @@ function get_interfaces(self)
        -- find vlan interfaces
        _uci_real:foreach("network", "switch_vlan",
                function(s)
-                       local base = s.device or "-"
-                       if not base:match("^eth%d") then
-                               base = "eth0"
+                       if not s.device then
+                               return
+                       end
+
+                       local base = baseof[s.device]
+                       if not base then
+                               if not s.device:match("^eth%d") then
+                                       local l
+                                       for l in utl.execi("swconfig dev %q help 2>/dev/null" % s.device) do
+                                               if not base then
+                                                       base = l:match("^%w+: (%w+)")
+                                               end
+                                       end
+                                       if not base or not base:match("^eth%d") then
+                                               base = "eth0"
+                                       end
+                               else
+                                       base = s.device
+                               end
+                               baseof[s.device] = base
                        end
 
                        local vid = tonumber(s.vid or s.vlan)