2 * Copyright (c) 2014 Intel Corporation. All rights reserved.
3 * Copyright (c) 2014 Chelsio, Inc. All rights reserved.
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenIB.org BSD license below:
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
36 #define IWPM_ULIBNAME_SIZE 32
37 #define IWPM_DEVNAME_SIZE 32
38 #define IWPM_IFNAME_SIZE 16
39 #define IWPM_IPADDR_SIZE 16
42 IWPM_INVALID_NLMSG_ERR = 10,
43 IWPM_CREATE_MAPPING_ERR,
44 IWPM_DUPLICATE_MAPPING_ERR,
45 IWPM_UNKNOWN_MAPPING_ERR,
46 IWPM_CLIENT_DEV_INFO_ERR,
47 IWPM_USER_LIB_INFO_ERR,
48 IWPM_REMOTE_QUERY_REJECT
51 struct iwpm_dev_data {
52 char dev_name[IWPM_DEVNAME_SIZE];
53 char if_name[IWPM_IFNAME_SIZE];
57 struct sockaddr_storage loc_addr;
58 struct sockaddr_storage mapped_loc_addr;
59 struct sockaddr_storage rem_addr;
60 struct sockaddr_storage mapped_rem_addr;
64 * iwpm_init - Allocate resources for the iwarp port mapper
66 * Should be called when network interface goes up.
71 * iwpm_exit - Deallocate resources for the iwarp port mapper
73 * Should be called when network interface goes down.
78 * iwpm_valid_pid - Check if the userspace iwarp port mapper pid is valid
80 * Returns true if the pid is greater than zero, otherwise returns false
82 int iwpm_valid_pid(void);
85 * iwpm_register_pid - Send a netlink query to userspace
86 * to get the iwarp port mapper pid
87 * @pm_msg: Contains driver info to send to the userspace port mapper
88 * @nl_client: The index of the netlink client
90 int iwpm_register_pid(struct iwpm_dev_data *pm_msg, u8 nl_client);
93 * iwpm_add_mapping - Send a netlink add mapping request to
94 * the userspace port mapper
95 * @pm_msg: Contains the local ip/tcp address info to send
96 * @nl_client: The index of the netlink client
98 * If the request is successful, the pm_msg stores
99 * the port mapper response (mapped address info)
101 int iwpm_add_mapping(struct iwpm_sa_data *pm_msg, u8 nl_client);
104 * iwpm_add_and_query_mapping - Send a netlink add and query mapping request
105 * to the userspace port mapper
106 * @pm_msg: Contains the local and remote ip/tcp address info to send
107 * @nl_client: The index of the netlink client
109 * If the request is successful, the pm_msg stores the
110 * port mapper response (mapped local and remote address info)
112 int iwpm_add_and_query_mapping(struct iwpm_sa_data *pm_msg, u8 nl_client);
115 * iwpm_remove_mapping - Send a netlink remove mapping request
116 * to the userspace port mapper
118 * @local_addr: Local ip/tcp address to remove
119 * @nl_client: The index of the netlink client
121 int iwpm_remove_mapping(struct sockaddr_storage *local_addr, u8 nl_client);
124 * iwpm_register_pid_cb - Process the port mapper response to
125 * iwpm_register_pid query
127 * @cb: Contains the received message (payload and netlink header)
129 * If successful, the function receives the userspace port mapper pid
130 * which is used in future communication with the port mapper
132 int iwpm_register_pid_cb(struct sk_buff *, struct netlink_callback *);
135 * iwpm_add_mapping_cb - Process the port mapper response to
136 * iwpm_add_mapping request
138 * @cb: Contains the received message (payload and netlink header)
140 int iwpm_add_mapping_cb(struct sk_buff *, struct netlink_callback *);
143 * iwpm_add_and_query_mapping_cb - Process the port mapper response to
144 * iwpm_add_and_query_mapping request
146 * @cb: Contains the received message (payload and netlink header)
148 int iwpm_add_and_query_mapping_cb(struct sk_buff *, struct netlink_callback *);
151 * iwpm_remote_info_cb - Process remote connecting peer address info, which
152 * the port mapper has received from the connecting peer
154 * @cb: Contains the received message (payload and netlink header)
156 * Stores the IPv4/IPv6 address info in a hash table
158 int iwpm_remote_info_cb(struct sk_buff *, struct netlink_callback *);
161 * iwpm_mapping_error_cb - Process port mapper notification for error
164 * @cb: Contains the received message (payload and netlink header)
166 int iwpm_mapping_error_cb(struct sk_buff *, struct netlink_callback *);
169 * iwpm_mapping_info_cb - Process a notification that the userspace
170 * port mapper daemon is started
172 * @cb: Contains the received message (payload and netlink header)
174 * Using the received port mapper pid, send all the local mapping
175 * info records to the userspace port mapper
177 int iwpm_mapping_info_cb(struct sk_buff *, struct netlink_callback *);
180 * iwpm_ack_mapping_info_cb - Process the port mapper ack for
181 * the provided local mapping info records
183 * @cb: Contains the received message (payload and netlink header)
185 int iwpm_ack_mapping_info_cb(struct sk_buff *, struct netlink_callback *);
188 * iwpm_get_remote_info - Get the remote connecting peer address info
190 * @mapped_loc_addr: Mapped local address of the listening peer
191 * @mapped_rem_addr: Mapped remote address of the connecting peer
192 * @remote_addr: To store the remote address of the connecting peer
193 * @nl_client: The index of the netlink client
195 * The remote address info is retrieved and provided to the client in
196 * the remote_addr. After that it is removed from the hash table
198 int iwpm_get_remote_info(struct sockaddr_storage *mapped_loc_addr,
199 struct sockaddr_storage *mapped_rem_addr,
200 struct sockaddr_storage *remote_addr, u8 nl_client);
203 * iwpm_create_mapinfo - Store local and mapped IPv4/IPv6 address
204 * info in a hash table
205 * @local_addr: Local ip/tcp address
206 * @mapped_addr: Mapped local ip/tcp address
207 * @nl_client: The index of the netlink client
209 int iwpm_create_mapinfo(struct sockaddr_storage *local_addr,
210 struct sockaddr_storage *mapped_addr, u8 nl_client);
213 * iwpm_remove_mapinfo - Remove local and mapped IPv4/IPv6 address
214 * info from the hash table
215 * @local_addr: Local ip/tcp address
216 * @mapped_addr: Mapped local ip/tcp address
218 * Returns err code if mapping info is not found in the hash table,
219 * otherwise returns 0
221 int iwpm_remove_mapinfo(struct sockaddr_storage *local_addr,
222 struct sockaddr_storage *mapped_addr);
224 #endif /* _IW_PORTMAP_H */