mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-22 21:32:06 +07:00
bc10ed7d3d
This patch adds a function to check if listeners for a netlink multicast group are present. It also adds a function to receive netlink response messages. Signed-off-by: Kaike Wan <kaike.wan@intel.com> Signed-off-by: John Fleck <john.fleck@intel.com> Signed-off-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
88 lines
2.5 KiB
C
88 lines
2.5 KiB
C
#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 */
|