include/rdma/rdma_netlink.h

   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
   8 struct ibnl_client_cbs {
   9         int (*dump)(struct sk_buff *skb, struct netlink_callback *nlcb);
  10         struct module *module;
  11 };
  12
  13 /**
  14  * Add a a client to the list of IB netlink exporters.
  15  * @index: Index of the added client
  16  * @nops: Number of supported ops by the added client.
  17  * @cb_table: A table for op->callback
  18  *
  19  * Returns 0 on success or a negative error code.
  20  */
  21 int ibnl_add_client(int index, int nops,
  22                     const struct ibnl_client_cbs cb_table[]);
  23
  24 /**
  25  * Remove a client from IB netlink.
  26  * @index: Index of the removed IB client.
  27  *
  28  * Returns 0 on success or a negative error code.
  29  */
  30 int ibnl_remove_client(int index);
  31
  32 /**
  33  * Put a new message in a supplied skb.
  34  * @skb: The netlink skb.
  35  * @nlh: Pointer to put the header of the new netlink message.
  36  * @seq: The message sequence number.
  37  * @len: The requested message length to allocate.
  38  * @client: Calling IB netlink client.
  39  * @op: message content op.
  40  * Returns the allocated buffer on success and NULL on failure.
  41  */
  42 void *ibnl_put_msg(struct sk_buff *skb, struct nlmsghdr **nlh, int seq,
  43                    int len, int client, int op, int flags);
  44 /**
  45  * Put a new attribute in a supplied skb.
  46  * @skb: The netlink skb.
  47  * @nlh: Header of the netlink message to append the attribute to.
  48  * @len: The length of the attribute data.
  49  * @data: The attribute data to put.
  50  * @type: The attribute type.
  51  * Returns the 0 and a negative error code on failure.
  52  */
  53 int ibnl_put_attr(struct sk_buff *skb, struct nlmsghdr *nlh,
  54                   int len, void *data, int type);
  55
  56 /**
  57  * Send the supplied skb to a specific userspace PID.
  58  * @skb: The netlink skb
  59  * @nlh: Header of the netlink message to send
  60  * @pid: Userspace netlink process ID
  61  * Returns 0 on success or a negative error code.
  62  */
  63 int ibnl_unicast(struct sk_buff *skb, struct nlmsghdr *nlh,
  64                         __u32 pid);
  65
  66 /**
  67  * Send the supplied skb to a netlink group.
  68  * @skb: The netlink skb
  69  * @nlh: Header of the netlink message to send
  70  * @group: Netlink group ID
  71  * @flags: allocation flags
  72  * Returns 0 on success or a negative error code.
  73  */
  74 int ibnl_multicast(struct sk_buff *skb, struct nlmsghdr *nlh,
  75                         unsigned int group, gfp_t flags);
  76
  77 #endif /* _RDMA_NETLINK_H */