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#ifndef _RDMA_NETLINK_H
#define _RDMA_NETLINK_H
#include <linux/netlink.h>
#include <uapi/rdma/rdma_netlink.h>
struct ibnl_client_cbs {
int (*dump)(struct sk_buff *skb, struct netlink_callback *nlcb);
struct module *module;
};
int ibnl_init(void);
void ibnl_cleanup(void);
/**
* Add a a client to the list of IB netlink exporters.
* @index: Index of the added client
* @nops: Number of supported ops by the added client.
* @cb_table: A table for op->callback
*
* Returns 0 on success or a negative error code.
*/
int ibnl_add_client(int index, int nops,
const struct ibnl_client_cbs cb_table[]);
/**
* Remove a client from IB netlink.
* @index: Index of the removed IB client.
*
* Returns 0 on success or a negative error code.
*/
int ibnl_remove_client(int index);
/**
* Put a new message in a supplied skb.
* @skb: The netlink skb.
* @nlh: Pointer to put the header of the new netlink message.
* @seq: The message sequence number.
* @len: The requested message length to allocate.
* @client: Calling IB netlink client.
* @op: message content op.
* Returns the allocated buffer on success and NULL on failure.
*/
void *ibnl_put_msg(struct sk_buff *skb, struct nlmsghdr **nlh, int seq,
int len, int client, int op, int flags);
/**
* Put a new attribute in a supplied skb.
* @skb: The netlink skb.
* @nlh: Header of the netlink message to append the attribute to.
* @len: The length of the attribute data.
* @data: The attribute data to put.
* @type: The attribute type.
* Returns the 0 and a negative error code on failure.
*/
int ibnl_put_attr(struct sk_buff *skb, struct nlmsghdr *nlh,
int len, void *data, int type);
/**
* Send the supplied skb to a specific userspace PID.
* @skb: The netlink skb
* @nlh: Header of the netlink message to send
* @pid: Userspace netlink process ID
* Returns 0 on success or a negative error code.
*/
int ibnl_unicast(struct sk_buff *skb, struct nlmsghdr *nlh,
__u32 pid);
/**
* Send the supplied skb to a netlink group.
* @skb: The netlink skb
* @nlh: Header of the netlink message to send
* @group: Netlink group ID
* @flags: allocation flags
* Returns 0 on success or a negative error code.
*/
int ibnl_multicast(struct sk_buff *skb, struct nlmsghdr *nlh,
unsigned int group, gfp_t flags);
/**
* Check if there are any listeners to the netlink group
* @group: the netlink group ID
* Returns 0 on success or a negative for no listeners.
*/
int ibnl_chk_listeners(unsigned int group);
#endif /* _RDMA_NETLINK_H */