patches/0073-netdevice-mtu-range.cocci

   1 @initialize:python@
   2 @@
   3
   4 first_ops = 0
   5
   6 @both@
   7 expression ndevexp;
   8 constant e1, e2;
   9 identifier func;
  10 position p;
  11 @@
  12 func(...) {
  13         <+...
  14         ndevexp->min_mtu = e1;
  15         ndevexp->max_mtu@p = e2;
  16         ...+>
  17 }
  18
  19 @@
  20 expression ndevexp;
  21 constant MAX;
  22 identifier func;
  23 position p != both.p;
  24 @@
  25 func(...) {
  26         <+...
  27 +       ndevexp->min_mtu = 0;
  28         ndevexp->max_mtu@p = MAX;
  29         ...+>
  30 }
  31
  32 @r@
  33 identifier OPS;
  34 position p;
  35 @@
  36
  37 struct net_device_ops OPS@p = { ... };
  38
  39 @script:python depends on r@
  40 @@
  41
  42 first_ops = 0
  43
  44 @script:python@
  45 p << r.p;
  46 @@
  47
  48 ln = int(p[0].line)
  49 if first_ops == 0 or ln < first_ops:
  50   first_ops = ln
  51
  52 @script:python@
  53 p << r.p;
  54 @@
  55
  56 ln = int(p[0].line)
  57 if not(first_ops == ln):
  58   cocci.include_match(False)
  59
  60 @r1 exists@
  61 expression ndevexp;
  62 constant e1, e2;
  63 identifier func;
  64 @@
  65 func(...) {
  66         <+...
  67         ndevexp->min_mtu = e1;
  68         ndevexp->max_mtu = e2;
  69         ...+>
  70 }
  71
  72 @r2@
  73 constant r1.e1,r1.e2;
  74 identifier r.OPS;
  75 @@
  76 +#if LINUX_VERSION_IS_LESS(4,10,0)
  77 + static int __change_mtu(struct net_device *ndev, int new_mtu)
  78 + {
  79 + if (new_mtu < e1 || new_mtu > e2)
  80 +             return -EINVAL;
  81 +             ndev->mtu = new_mtu;
  82 +             return 0;
  83 + }
  84 +#endif
  85 +
  86 struct net_device_ops OPS = {
  87        ...
  88 };
  89
  90 @depends on r2@
  91 identifier OPS;
  92 @@
  93
  94 struct net_device_ops OPS = {
  95 +#if LINUX_VERSION_IS_LESS(4,10,0)
  96 +      .ndo_change_mtu = __change_mtu,
  97 +#endif
  98        ...
  99 };
 100