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1 | #ifndef _RDMA_NETLINK_H |
2 | #define _RDMA_NETLINK_H | |
3 | ||
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4 | |
5 | #include <linux/netlink.h> | |
7235aa79 | 6 | #include <uapi/rdma/rdma_netlink.h> |
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7 | |
8 | struct ibnl_client_cbs { | |
9 | int (*dump)(struct sk_buff *skb, struct netlink_callback *nlcb); | |
809d5fc9 | 10 | struct module *module; |
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11 | }; |
12 | ||
13 | int ibnl_init(void); | |
14 | void 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 | */ | |
24 | int 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 | */ | |
33 | int 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 | */ | |
45 | void *ibnl_put_msg(struct sk_buff *skb, struct nlmsghdr **nlh, int seq, | |
30dc5e63 | 46 | int len, int client, int op, int flags); |
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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 | */ | |
56 | int ibnl_put_attr(struct sk_buff *skb, struct nlmsghdr *nlh, | |
57 | int len, void *data, int type); | |
58 | ||
30dc5e63 TN |
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 | */ | |
66 | int 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 | */ | |
77 | int ibnl_multicast(struct sk_buff *skb, struct nlmsghdr *nlh, | |
78 | unsigned int group, gfp_t flags); | |
79 | ||
bc10ed7d KW |
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 | */ | |
85 | int ibnl_chk_listeners(unsigned int group); | |
86 | ||
b2cbae2c | 87 | #endif /* _RDMA_NETLINK_H */ |