package/mac80211/patches/020-nl80211_backport.patch

   1 --- a/include/linux/compat-2.6.37.h
   2 +++ b/include/linux/compat-2.6.37.h
   3 @@ -45,6 +45,68 @@ static inline void skb_checksum_none_ass
   4
   5  #define pcmcia_enable_device(link)     pcmcia_request_configuration(link, &link->conf)
   6
   7 +#include <net/genetlink.h>
   8 +
   9 +struct compat_genl_info {
  10 +       struct genl_info *info;
  11 +
  12 +       u32 snd_seq;
  13 +       u32 snd_pid;
  14 +       struct genlmsghdr *genlhdr;
  15 +       struct nlattr **attrs;
  16 +       void *user_ptr[2];
  17 +};
  18 +#define genl_info compat_genl_info
  19 +
  20 +struct compat_genl_ops {
  21 +       struct genl_ops ops;
  22 +
  23 +       u8 cmd;
  24 +       u8 internal_flags;
  25 +       unsigned int flags;
  26 +       const struct nla_policy *policy;
  27 +
  28 +       int (*doit)(struct sk_buff *skb, struct genl_info *info);
  29 +       int (*dumpit)(struct sk_buff *skb, struct netlink_callback *cb);
  30 +       int (*done)(struct netlink_callback *cb);
  31 +};
  32 +#define genl_ops compat_genl_ops
  33 +
  34 +struct compat_genl_family {
  35 +       struct genl_family family;
  36 +
  37 +       struct list_head list;
  38 +
  39 +       unsigned int id, hdrsize, version, maxattr;
  40 +       const char *name;
  41 +       bool netnsok;
  42 +
  43 +       struct nlattr **attrbuf;
  44 +
  45 +       int (*pre_doit)(struct genl_ops *ops, struct sk_buff *skb,
  46 +                       struct genl_info *info);
  47 +
  48 +       void (*post_doit)(struct genl_ops *ops, struct sk_buff *skb,
  49 +                         struct genl_info *info);
  50 +};
  51 +
  52 +#define genl_family compat_genl_family
  53 +
  54 +#define genl_register_family_with_ops compat_genl_register_family_with_ops
  55 +
  56 +int genl_register_family_with_ops(struct genl_family *family,
  57 +                                 struct genl_ops *ops, size_t n_ops);
  58 +
  59 +#define genl_unregister_family compat_genl_unregister_family
  60 +
  61 +int genl_unregister_family(struct genl_family *family);
  62 +
  63 +#define genl_info_net(_info) genl_info_net((_info)->info)
  64 +#define genlmsg_reply(_msg, _info) genlmsg_reply(_msg, (_info)->info)
  65 +#define genlmsg_put(_skb, _pid, _seq, _fam, _flags, _cmd) genlmsg_put(_skb, _pid, _seq, &(_fam)->family, _flags, _cmd)
  66 +#define genl_register_mc_group(_fam, _grp) genl_register_mc_group(&(_fam)->family, _grp)
  67 +#define genl_unregister_mc_group(_fam, _grp) genl_unregister_mc_group(&(_fam)->family, _grp)
  68 +
  69  #endif /* (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,37)) */
  70
  71  #endif /* LINUX_26_37_COMPAT_H */
  72 --- a/compat/compat-2.6.37.c
  73 +++ b/compat/compat-2.6.37.c
  74 @@ -42,4 +42,116 @@ EXPORT_SYMBOL_GPL(net_ns_type_operations
  75
  76  #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)*/
  77
  78 +#undef genl_info
  79 +#undef genl_unregister_family
  80 +
  81 +static LIST_HEAD(compat_nl_fam);
  82 +
  83 +static struct genl_ops *genl_get_cmd(u8 cmd, struct genl_family *family)
  84 +{
  85 +       struct genl_ops *ops;
  86 +
  87 +       list_for_each_entry(ops, &family->family.ops_list, ops.ops_list)
  88 +               if (ops->cmd == cmd)
  89 +                       return ops;
  90 +
  91 +       return NULL;
  92 +}
  93 +
  94 +
  95 +static int nl_doit_wrapper(struct sk_buff *skb, struct genl_info *info)
  96 +{
  97 +       struct compat_genl_info compat_info;
  98 +       struct genl_family *family;
  99 +       struct genl_ops *ops;
 100 +       int err;
 101 +
 102 +       list_for_each_entry(family, &compat_nl_fam, list) {
 103 +               if (family->id == info->nlhdr->nlmsg_type)
 104 +                       goto found;
 105 +       }
 106 +       return -ENOENT;
 107 +
 108 +found:
 109 +       ops = genl_get_cmd(info->genlhdr->cmd, family);
 110 +       if (!ops)
 111 +               return -ENOENT;
 112 +
 113 +       memset(&compat_info.user_ptr, 0, sizeof(compat_info.user_ptr));
 114 +       compat_info.info = info;
 115 +#define __copy(_field) compat_info._field = info->_field
 116 +       __copy(snd_seq);
 117 +       __copy(snd_pid);
 118 +       __copy(genlhdr);
 119 +       __copy(attrs);
 120 +#undef __copy
 121 +       if (family->pre_doit) {
 122 +               err = family->pre_doit(ops, skb, &compat_info);
 123 +               if (err)
 124 +                       return err;
 125 +       }
 126 +
 127 +       err = ops->doit(skb, &compat_info);
 128 +
 129 +       if (family->post_doit)
 130 +               family->post_doit(ops, skb, &compat_info);
 131 +
 132 +       return err;
 133 +}
 134 +
 135 +int compat_genl_register_family_with_ops(struct genl_family *family,
 136 +                                        struct genl_ops *ops, size_t n_ops)
 137 +{
 138 +       int i, ret;
 139 +
 140 +#define __copy(_field) family->family._field = family->_field
 141 +       __copy(id);
 142 +       __copy(hdrsize);
 143 +       __copy(version);
 144 +       __copy(maxattr);
 145 +       strncpy(family->family.name, family->name, sizeof(family->family.name));
 146 +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32))
 147 +       __copy(netnsok);
 148 +#endif
 149 +#undef __copy
 150 +
 151 +       ret = genl_register_family(&family->family);
 152 +       if (ret < 0)
 153 +               return ret;
 154 +
 155 +       family->attrbuf = family->family.attrbuf;
 156 +       family->id = family->family.id;
 157 +
 158 +       for (i = 0; i < n_ops; i++) {
 159 +#define __copy(_field) ops[i].ops._field = ops[i]._field
 160 +               __copy(cmd);
 161 +               __copy(flags);
 162 +               __copy(policy);
 163 +               __copy(dumpit);
 164 +               __copy(done);
 165 +#undef __copy
 166 +               ops[i].ops.doit = nl_doit_wrapper;
 167 +               ret = genl_register_ops(&family->family, &ops[i].ops);
 168 +               if (ret < 0)
 169 +                       goto error_ops;
 170 +       }
 171 +       list_add(&family->list, &compat_nl_fam);
 172 +
 173 +       return ret;
 174 +
 175 +error_ops:
 176 +       compat_genl_unregister_family(family);
 177 +       return ret;
 178 +}
 179 +EXPORT_SYMBOL(compat_genl_register_family_with_ops);
 180 +
 181 +int compat_genl_unregister_family(struct genl_family *family)
 182 +{
 183 +       int err;
 184 +       err = genl_unregister_family(&family->family);
 185 +       list_del(&family->list);
 186 +       return err;
 187 +}
 188 +EXPORT_SYMBOL(compat_genl_unregister_family);
 189 +
 190  #endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2,6,37) */