diff options
Diffstat (limited to 'ANDROID_3.4.5/include/net/genetlink.h')
| -rw-r--r-- | ANDROID_3.4.5/include/net/genetlink.h | 317 |
1 files changed, 0 insertions, 317 deletions
diff --git a/ANDROID_3.4.5/include/net/genetlink.h b/ANDROID_3.4.5/include/net/genetlink.h deleted file mode 100644 index ccb68880..00000000 --- a/ANDROID_3.4.5/include/net/genetlink.h +++ /dev/null @@ -1,317 +0,0 @@ -#ifndef __NET_GENERIC_NETLINK_H -#define __NET_GENERIC_NETLINK_H - -#include <linux/genetlink.h> -#include <net/netlink.h> -#include <net/net_namespace.h> - -/** - * struct genl_multicast_group - generic netlink multicast group - * @name: name of the multicast group, names are per-family - * @id: multicast group ID, assigned by the core, to use with - * genlmsg_multicast(). - * @list: list entry for linking - * @family: pointer to family, need not be set before registering - */ -struct genl_multicast_group { - struct genl_family *family; /* private */ - struct list_head list; /* private */ - char name[GENL_NAMSIZ]; - u32 id; -}; - -struct genl_ops; -struct genl_info; - -/** - * struct genl_family - generic netlink family - * @id: protocol family idenfitier - * @hdrsize: length of user specific header in bytes - * @name: name of family - * @version: protocol version - * @maxattr: maximum number of attributes supported - * @netnsok: set to true if the family can handle network - * namespaces and should be presented in all of them - * @pre_doit: called before an operation's doit callback, it may - * do additional, common, filtering and return an error - * @post_doit: called after an operation's doit callback, it may - * undo operations done by pre_doit, for example release locks - * @attrbuf: buffer to store parsed attributes - * @ops_list: list of all assigned operations - * @family_list: family list - * @mcast_groups: multicast groups list - */ -struct genl_family { - unsigned int id; - unsigned int hdrsize; - char name[GENL_NAMSIZ]; - unsigned int version; - unsigned int maxattr; - bool netnsok; - int (*pre_doit)(struct genl_ops *ops, - struct sk_buff *skb, - struct genl_info *info); - void (*post_doit)(struct genl_ops *ops, - struct sk_buff *skb, - struct genl_info *info); - struct nlattr ** attrbuf; /* private */ - struct list_head ops_list; /* private */ - struct list_head family_list; /* private */ - struct list_head mcast_groups; /* private */ -}; - -/** - * struct genl_info - receiving information - * @snd_seq: sending sequence number - * @snd_pid: netlink pid of sender - * @nlhdr: netlink message header - * @genlhdr: generic netlink message header - * @userhdr: user specific header - * @attrs: netlink attributes - * @_net: network namespace - * @user_ptr: user pointers - */ -struct genl_info { - u32 snd_seq; - u32 snd_pid; - struct nlmsghdr * nlhdr; - struct genlmsghdr * genlhdr; - void * userhdr; - struct nlattr ** attrs; -#ifdef CONFIG_NET_NS - struct net * _net; -#endif - void * user_ptr[2]; -}; - -static inline struct net *genl_info_net(struct genl_info *info) -{ - return read_pnet(&info->_net); -} - -static inline void genl_info_net_set(struct genl_info *info, struct net *net) -{ - write_pnet(&info->_net, net); -} - -/** - * struct genl_ops - generic netlink operations - * @cmd: command identifier - * @internal_flags: flags used by the family - * @flags: flags - * @policy: attribute validation policy - * @doit: standard command callback - * @dumpit: callback for dumpers - * @done: completion callback for dumps - * @ops_list: operations list - */ -struct genl_ops { - u8 cmd; - u8 internal_flags; - unsigned int flags; - const struct nla_policy *policy; - int (*doit)(struct sk_buff *skb, - struct genl_info *info); - int (*dumpit)(struct sk_buff *skb, - struct netlink_callback *cb); - int (*done)(struct netlink_callback *cb); - struct list_head ops_list; -}; - -extern int genl_register_family(struct genl_family *family); -extern int genl_register_family_with_ops(struct genl_family *family, - struct genl_ops *ops, size_t n_ops); -extern int genl_unregister_family(struct genl_family *family); -extern int genl_register_ops(struct genl_family *, struct genl_ops *ops); -extern int genl_unregister_ops(struct genl_family *, struct genl_ops *ops); -extern int genl_register_mc_group(struct genl_family *family, - struct genl_multicast_group *grp); -extern void genl_unregister_mc_group(struct genl_family *family, - struct genl_multicast_group *grp); -extern void genl_notify(struct sk_buff *skb, struct net *net, u32 pid, - u32 group, struct nlmsghdr *nlh, gfp_t flags); - -void *genlmsg_put(struct sk_buff *skb, u32 pid, u32 seq, - struct genl_family *family, int flags, u8 cmd); - -/** - * genlmsg_nlhdr - Obtain netlink header from user specified header - * @user_hdr: user header as returned from genlmsg_put() - * @family: generic netlink family - * - * Returns pointer to netlink header. - */ -static inline struct nlmsghdr *genlmsg_nlhdr(void *user_hdr, - struct genl_family *family) -{ - return (struct nlmsghdr *)((char *)user_hdr - - family->hdrsize - - GENL_HDRLEN - - NLMSG_HDRLEN); -} - -/** - * genl_dump_check_consistent - check if sequence is consistent and advertise if not - * @cb: netlink callback structure that stores the sequence number - * @user_hdr: user header as returned from genlmsg_put() - * @family: generic netlink family - * - * Cf. nl_dump_check_consistent(), this just provides a wrapper to make it - * simpler to use with generic netlink. - */ -static inline void genl_dump_check_consistent(struct netlink_callback *cb, - void *user_hdr, - struct genl_family *family) -{ - nl_dump_check_consistent(cb, genlmsg_nlhdr(user_hdr, family)); -} - -/** - * genlmsg_put_reply - Add generic netlink header to a reply message - * @skb: socket buffer holding the message - * @info: receiver info - * @family: generic netlink family - * @flags: netlink message flags - * @cmd: generic netlink command - * - * Returns pointer to user specific header - */ -static inline void *genlmsg_put_reply(struct sk_buff *skb, - struct genl_info *info, - struct genl_family *family, - int flags, u8 cmd) -{ - return genlmsg_put(skb, info->snd_pid, info->snd_seq, family, - flags, cmd); -} - -/** - * genlmsg_end - Finalize a generic netlink message - * @skb: socket buffer the message is stored in - * @hdr: user specific header - */ -static inline int genlmsg_end(struct sk_buff *skb, void *hdr) -{ - return nlmsg_end(skb, hdr - GENL_HDRLEN - NLMSG_HDRLEN); -} - -/** - * genlmsg_cancel - Cancel construction of a generic netlink message - * @skb: socket buffer the message is stored in - * @hdr: generic netlink message header - */ -static inline void genlmsg_cancel(struct sk_buff *skb, void *hdr) -{ - if (hdr) - nlmsg_cancel(skb, hdr - GENL_HDRLEN - NLMSG_HDRLEN); -} - -/** - * genlmsg_multicast_netns - multicast a netlink message to a specific netns - * @net: the net namespace - * @skb: netlink message as socket buffer - * @pid: own netlink pid to avoid sending to yourself - * @group: multicast group id - * @flags: allocation flags - */ -static inline int genlmsg_multicast_netns(struct net *net, struct sk_buff *skb, - u32 pid, unsigned int group, gfp_t flags) -{ - return nlmsg_multicast(net->genl_sock, skb, pid, group, flags); -} - -/** - * genlmsg_multicast - multicast a netlink message to the default netns - * @skb: netlink message as socket buffer - * @pid: own netlink pid to avoid sending to yourself - * @group: multicast group id - * @flags: allocation flags - */ -static inline int genlmsg_multicast(struct sk_buff *skb, u32 pid, - unsigned int group, gfp_t flags) -{ - return genlmsg_multicast_netns(&init_net, skb, pid, group, flags); -} - -/** - * genlmsg_multicast_allns - multicast a netlink message to all net namespaces - * @skb: netlink message as socket buffer - * @pid: own netlink pid to avoid sending to yourself - * @group: multicast group id - * @flags: allocation flags - * - * This function must hold the RTNL or rcu_read_lock(). - */ -int genlmsg_multicast_allns(struct sk_buff *skb, u32 pid, - unsigned int group, gfp_t flags); - -/** - * genlmsg_unicast - unicast a netlink message - * @skb: netlink message as socket buffer - * @pid: netlink pid of the destination socket - */ -static inline int genlmsg_unicast(struct net *net, struct sk_buff *skb, u32 pid) -{ - return nlmsg_unicast(net->genl_sock, skb, pid); -} - -/** - * genlmsg_reply - reply to a request - * @skb: netlink message to be sent back - * @info: receiver information - */ -static inline int genlmsg_reply(struct sk_buff *skb, struct genl_info *info) -{ - return genlmsg_unicast(genl_info_net(info), skb, info->snd_pid); -} - -/** - * gennlmsg_data - head of message payload - * @gnlh: genetlink message header - */ -static inline void *genlmsg_data(const struct genlmsghdr *gnlh) -{ - return ((unsigned char *) gnlh + GENL_HDRLEN); -} - -/** - * genlmsg_len - length of message payload - * @gnlh: genetlink message header - */ -static inline int genlmsg_len(const struct genlmsghdr *gnlh) -{ - struct nlmsghdr *nlh = (struct nlmsghdr *)((unsigned char *)gnlh - - NLMSG_HDRLEN); - return (nlh->nlmsg_len - GENL_HDRLEN - NLMSG_HDRLEN); -} - -/** - * genlmsg_msg_size - length of genetlink message not including padding - * @payload: length of message payload - */ -static inline int genlmsg_msg_size(int payload) -{ - return GENL_HDRLEN + payload; -} - -/** - * genlmsg_total_size - length of genetlink message including padding - * @payload: length of message payload - */ -static inline int genlmsg_total_size(int payload) -{ - return NLMSG_ALIGN(genlmsg_msg_size(payload)); -} - -/** - * genlmsg_new - Allocate a new generic netlink message - * @payload: size of the message payload - * @flags: the type of memory to allocate. - */ -static inline struct sk_buff *genlmsg_new(size_t payload, gfp_t flags) -{ - return nlmsg_new(genlmsg_total_size(payload), flags); -} - - -#endif /* __NET_GENERIC_NETLINK_H */ |