191 lines
4.8 KiB
Diff
191 lines
4.8 KiB
Diff
--- a/include/linux/compat-2.6.37.h
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+++ b/include/linux/compat-2.6.37.h
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@@ -45,6 +45,68 @@ static inline void skb_checksum_none_ass
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#define pcmcia_enable_device(link) pcmcia_request_configuration(link, &link->conf)
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+#include <net/genetlink.h>
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+
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+struct compat_genl_info {
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+ struct genl_info *info;
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+
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+ u32 snd_seq;
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+ u32 snd_pid;
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+ struct genlmsghdr *genlhdr;
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+ struct nlattr **attrs;
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+ void *user_ptr[2];
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+};
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+#define genl_info compat_genl_info
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+
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+struct compat_genl_ops {
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+ struct genl_ops ops;
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+
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+ u8 cmd;
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+ u8 internal_flags;
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+ unsigned int flags;
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+ const struct nla_policy *policy;
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+
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+ int (*doit)(struct sk_buff *skb, struct genl_info *info);
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+ int (*dumpit)(struct sk_buff *skb, struct netlink_callback *cb);
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+ int (*done)(struct netlink_callback *cb);
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+};
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+#define genl_ops compat_genl_ops
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+
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+struct compat_genl_family {
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+ struct genl_family family;
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+
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+ struct list_head list;
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+
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+ unsigned int id, hdrsize, version, maxattr;
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+ const char *name;
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+ bool netnsok;
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+
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+ struct nlattr **attrbuf;
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+
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+ int (*pre_doit)(struct genl_ops *ops, struct sk_buff *skb,
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+ struct genl_info *info);
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+
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+ void (*post_doit)(struct genl_ops *ops, struct sk_buff *skb,
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+ struct genl_info *info);
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+};
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+
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+#define genl_family compat_genl_family
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+
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+#define genl_register_family_with_ops compat_genl_register_family_with_ops
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+
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+int genl_register_family_with_ops(struct genl_family *family,
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+ struct genl_ops *ops, size_t n_ops);
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+
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+#define genl_unregister_family compat_genl_unregister_family
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+
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+int genl_unregister_family(struct genl_family *family);
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+
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+#define genl_info_net(_info) genl_info_net((_info)->info)
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+#define genlmsg_reply(_msg, _info) genlmsg_reply(_msg, (_info)->info)
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+#define genlmsg_put(_skb, _pid, _seq, _fam, _flags, _cmd) genlmsg_put(_skb, _pid, _seq, &(_fam)->family, _flags, _cmd)
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+#define genl_register_mc_group(_fam, _grp) genl_register_mc_group(&(_fam)->family, _grp)
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+#define genl_unregister_mc_group(_fam, _grp) genl_unregister_mc_group(&(_fam)->family, _grp)
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+
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#endif /* (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,37)) */
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#endif /* LINUX_26_37_COMPAT_H */
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--- a/compat/compat-2.6.37.c
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+++ b/compat/compat-2.6.37.c
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@@ -42,4 +42,116 @@ EXPORT_SYMBOL_GPL(net_ns_type_operations
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#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)*/
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+#undef genl_info
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+#undef genl_unregister_family
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+
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+static LIST_HEAD(compat_nl_fam);
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+
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+static struct genl_ops *genl_get_cmd(u8 cmd, struct genl_family *family)
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+{
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+ struct genl_ops *ops;
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+
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+ list_for_each_entry(ops, &family->family.ops_list, ops.ops_list)
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+ if (ops->cmd == cmd)
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+ return ops;
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+
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+ return NULL;
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+}
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+
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+
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+static int nl_doit_wrapper(struct sk_buff *skb, struct genl_info *info)
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+{
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+ struct compat_genl_info compat_info;
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+ struct genl_family *family;
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+ struct genl_ops *ops;
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+ int err;
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+
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+ list_for_each_entry(family, &compat_nl_fam, list) {
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+ if (family->id == info->nlhdr->nlmsg_type)
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+ goto found;
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+ }
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+ return -ENOENT;
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+
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+found:
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+ ops = genl_get_cmd(info->genlhdr->cmd, family);
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+ if (!ops)
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+ return -ENOENT;
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+
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+ memset(&compat_info.user_ptr, 0, sizeof(compat_info.user_ptr));
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+ compat_info.info = info;
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+#define __copy(_field) compat_info._field = info->_field
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+ __copy(snd_seq);
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+ __copy(snd_pid);
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+ __copy(genlhdr);
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+ __copy(attrs);
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+#undef __copy
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+ if (family->pre_doit) {
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+ err = family->pre_doit(ops, skb, &compat_info);
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+ if (err)
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+ return err;
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+ }
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+
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+ err = ops->doit(skb, &compat_info);
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+
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+ if (family->post_doit)
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+ family->post_doit(ops, skb, &compat_info);
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+
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+ return err;
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+}
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+
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+int compat_genl_register_family_with_ops(struct genl_family *family,
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+ struct genl_ops *ops, size_t n_ops)
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+{
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+ int i, ret;
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+
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+#define __copy(_field) family->family._field = family->_field
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+ __copy(id);
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+ __copy(hdrsize);
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+ __copy(version);
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+ __copy(maxattr);
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+ strncpy(family->family.name, family->name, sizeof(family->family.name));
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+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32))
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+ __copy(netnsok);
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+#endif
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+#undef __copy
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+
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+ ret = genl_register_family(&family->family);
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+ if (ret < 0)
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+ return ret;
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+
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+ family->attrbuf = family->family.attrbuf;
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+ family->id = family->family.id;
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+
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+ for (i = 0; i < n_ops; i++) {
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+#define __copy(_field) ops[i].ops._field = ops[i]._field
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+ __copy(cmd);
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+ __copy(flags);
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+ __copy(policy);
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+ __copy(dumpit);
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+ __copy(done);
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+#undef __copy
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+ ops[i].ops.doit = nl_doit_wrapper;
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+ ret = genl_register_ops(&family->family, &ops[i].ops);
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+ if (ret < 0)
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+ goto error_ops;
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+ }
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+ list_add(&family->list, &compat_nl_fam);
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+
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+ return ret;
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+
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+error_ops:
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+ compat_genl_unregister_family(family);
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+ return ret;
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+}
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+EXPORT_SYMBOL(compat_genl_register_family_with_ops);
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+
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+int compat_genl_unregister_family(struct genl_family *family)
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+{
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+ int err;
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+ err = genl_unregister_family(&family->family);
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+ list_del(&family->list);
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+ return err;
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+}
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+EXPORT_SYMBOL(compat_genl_unregister_family);
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+
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#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2,6,37) */
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