LXR linux/include/rdma/rdma

   1#ifndef _RDMA_NETLINK_H
   2#define _RDMA_NETLINK_H
   3
   4
   5#include <linux/netlink.h>
   6#include <uapi/rdma/rdma_netlink.h>
   7
   8struct ibnl_client_cbs {
   9        int (*dump)(struct sk_buff *skb, struct netlink_callback *nlcb);
  10        struct module *module;
  11};
  12
  13int ibnl_init(void);
  14void ibnl_cleanup(void);
  15
  16/**
  17 * Add a a client to the list of IB netlink exporters.
  18 * @index: Index of the added client
  19 * @nops: Number of supported ops by the added client.
  20 * @cb_table: A table for op->callback
  21 *
  22 * Returns 0 on success or a negative error code.
  23 */
  24int ibnl_add_client(int index, int nops,
  25                    const struct ibnl_client_cbs cb_table[]);
  26
  27/**
  28 * Remove a client from IB netlink.
  29 * @index: Index of the removed IB client.
  30 *
  31 * Returns 0 on success or a negative error code.
  32 */
  33int ibnl_remove_client(int index);
  34
  35/**
  36 * Put a new message in a supplied skb.
  37 * @skb: The netlink skb.
  38 * @nlh: Pointer to put the header of the new netlink message.
  39 * @seq: The message sequence number.
  40 * @len: The requested message length to allocate.
  41 * @client: Calling IB netlink client.
  42 * @op: message content op.
  43 * Returns the allocated buffer on success and NULL on failure.
  44 */
  45void *ibnl_put_msg(struct sk_buff *skb, struct nlmsghdr **nlh, int seq,
  46                   int len, int client, int op, int flags);
  47/**
  48 * Put a new attribute in a supplied skb.
  49 * @skb: The netlink skb.
  50 * @nlh: Header of the netlink message to append the attribute to.
  51 * @len: The length of the attribute data.
  52 * @data: The attribute data to put.
  53 * @type: The attribute type.
  54 * Returns the 0 and a negative error code on failure.
  55 */
  56int ibnl_put_attr(struct sk_buff *skb, struct nlmsghdr *nlh,
  57                  int len, void *data, int type);
  58
  59/**
  60 * Send the supplied skb to a specific userspace PID.
  61 * @skb: The netlink skb
  62 * @nlh: Header of the netlink message to send
  63 * @pid: Userspace netlink process ID
  64 * Returns 0 on success or a negative error code.
  65 */
  66int ibnl_unicast(struct sk_buff *skb, struct nlmsghdr *nlh,
  67                        __u32 pid);
  68
  69/**
  70 * Send the supplied skb to a netlink group.
  71 * @skb: The netlink skb
  72 * @nlh: Header of the netlink message to send
  73 * @group: Netlink group ID
  74 * @flags: allocation flags
  75 * Returns 0 on success or a negative error code.
  76 */
  77int ibnl_multicast(struct sk_buff *skb, struct nlmsghdr *nlh,
  78                        unsigned int group, gfp_t flags);
  79
  80/**
  81 * Check if there are any listeners to the netlink group
  82 * @group: the netlink group ID
  83 * Returns 0 on success or a negative for no listeners.
  84 */
  85int ibnl_chk_listeners(unsigned int group);
  86
  87#endif /* _RDMA_NETLINK_H */
  88