forked from luck/tmp_suning_uos_patched
6eec177461
Add functionality to enable the port mapper on the passive side to provide to its clients the actual (non-mapped) ip/tcp address information of the connecting peer 1) Adding remote_info_cb() to process the address info of the connecting peer The address info is provided by the user space port mapper service when the connection is initiated by the peer 2) Adding a hash list to store the remote address info 3) Adding functionality to add/remove the remote address info After the info has been provided to the port mapper client, it is removed from the hash list Signed-off-by: Tatyana Nikolova <tatyana.e.nikolova@intel.com> Reviewed-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
225 lines
7.5 KiB
C
225 lines
7.5 KiB
C
/*
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* Copyright (c) 2014 Intel Corporation. All rights reserved.
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* Copyright (c) 2014 Chelsio, Inc. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef _IW_PORTMAP_H
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#define _IW_PORTMAP_H
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#define IWPM_ULIBNAME_SIZE 32
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#define IWPM_DEVNAME_SIZE 32
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#define IWPM_IFNAME_SIZE 16
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#define IWPM_IPADDR_SIZE 16
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enum {
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IWPM_INVALID_NLMSG_ERR = 10,
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IWPM_CREATE_MAPPING_ERR,
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IWPM_DUPLICATE_MAPPING_ERR,
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IWPM_UNKNOWN_MAPPING_ERR,
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IWPM_CLIENT_DEV_INFO_ERR,
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IWPM_USER_LIB_INFO_ERR,
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IWPM_REMOTE_QUERY_REJECT
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};
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struct iwpm_dev_data {
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char dev_name[IWPM_DEVNAME_SIZE];
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char if_name[IWPM_IFNAME_SIZE];
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};
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struct iwpm_sa_data {
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struct sockaddr_storage loc_addr;
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struct sockaddr_storage mapped_loc_addr;
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struct sockaddr_storage rem_addr;
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struct sockaddr_storage mapped_rem_addr;
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};
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/**
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* iwpm_init - Allocate resources for the iwarp port mapper
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*
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* Should be called when network interface goes up.
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*/
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int iwpm_init(u8);
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/**
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* iwpm_exit - Deallocate resources for the iwarp port mapper
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*
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* Should be called when network interface goes down.
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*/
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int iwpm_exit(u8);
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/**
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* iwpm_valid_pid - Check if the userspace iwarp port mapper pid is valid
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*
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* Returns true if the pid is greater than zero, otherwise returns false
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*/
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int iwpm_valid_pid(void);
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/**
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* iwpm_register_pid - Send a netlink query to userspace
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* to get the iwarp port mapper pid
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* @pm_msg: Contains driver info to send to the userspace port mapper
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* @nl_client: The index of the netlink client
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*/
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int iwpm_register_pid(struct iwpm_dev_data *pm_msg, u8 nl_client);
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/**
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* iwpm_add_mapping - Send a netlink add mapping request to
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* the userspace port mapper
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* @pm_msg: Contains the local ip/tcp address info to send
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* @nl_client: The index of the netlink client
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*
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* If the request is successful, the pm_msg stores
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* the port mapper response (mapped address info)
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*/
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int iwpm_add_mapping(struct iwpm_sa_data *pm_msg, u8 nl_client);
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/**
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* iwpm_add_and_query_mapping - Send a netlink add and query mapping request
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* to the userspace port mapper
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* @pm_msg: Contains the local and remote ip/tcp address info to send
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* @nl_client: The index of the netlink client
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*
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* If the request is successful, the pm_msg stores the
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* port mapper response (mapped local and remote address info)
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*/
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int iwpm_add_and_query_mapping(struct iwpm_sa_data *pm_msg, u8 nl_client);
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/**
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* iwpm_remove_mapping - Send a netlink remove mapping request
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* to the userspace port mapper
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*
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* @local_addr: Local ip/tcp address to remove
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* @nl_client: The index of the netlink client
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*/
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int iwpm_remove_mapping(struct sockaddr_storage *local_addr, u8 nl_client);
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/**
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* iwpm_register_pid_cb - Process the port mapper response to
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* iwpm_register_pid query
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* @skb:
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* @cb: Contains the received message (payload and netlink header)
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*
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* If successful, the function receives the userspace port mapper pid
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* which is used in future communication with the port mapper
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*/
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int iwpm_register_pid_cb(struct sk_buff *, struct netlink_callback *);
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/**
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* iwpm_add_mapping_cb - Process the port mapper response to
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* iwpm_add_mapping request
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* @skb:
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* @cb: Contains the received message (payload and netlink header)
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*/
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int iwpm_add_mapping_cb(struct sk_buff *, struct netlink_callback *);
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/**
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* iwpm_add_and_query_mapping_cb - Process the port mapper response to
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* iwpm_add_and_query_mapping request
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* @skb:
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* @cb: Contains the received message (payload and netlink header)
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*/
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int iwpm_add_and_query_mapping_cb(struct sk_buff *, struct netlink_callback *);
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/**
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* iwpm_remote_info_cb - Process remote connecting peer address info, which
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* the port mapper has received from the connecting peer
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*
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* @cb: Contains the received message (payload and netlink header)
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*
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* Stores the IPv4/IPv6 address info in a hash table
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*/
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int iwpm_remote_info_cb(struct sk_buff *, struct netlink_callback *);
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/**
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* iwpm_mapping_error_cb - Process port mapper notification for error
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*
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* @skb:
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* @cb: Contains the received message (payload and netlink header)
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*/
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int iwpm_mapping_error_cb(struct sk_buff *, struct netlink_callback *);
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/**
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* iwpm_mapping_info_cb - Process a notification that the userspace
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* port mapper daemon is started
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* @skb:
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* @cb: Contains the received message (payload and netlink header)
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*
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* Using the received port mapper pid, send all the local mapping
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* info records to the userspace port mapper
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*/
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int iwpm_mapping_info_cb(struct sk_buff *, struct netlink_callback *);
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/**
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* iwpm_ack_mapping_info_cb - Process the port mapper ack for
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* the provided local mapping info records
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* @skb:
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* @cb: Contains the received message (payload and netlink header)
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*/
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int iwpm_ack_mapping_info_cb(struct sk_buff *, struct netlink_callback *);
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/**
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* iwpm_get_remote_info - Get the remote connecting peer address info
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*
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* @mapped_loc_addr: Mapped local address of the listening peer
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* @mapped_rem_addr: Mapped remote address of the connecting peer
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* @remote_addr: To store the remote address of the connecting peer
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* @nl_client: The index of the netlink client
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*
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* The remote address info is retrieved and provided to the client in
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* the remote_addr. After that it is removed from the hash table
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*/
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int iwpm_get_remote_info(struct sockaddr_storage *mapped_loc_addr,
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struct sockaddr_storage *mapped_rem_addr,
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struct sockaddr_storage *remote_addr, u8 nl_client);
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/**
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* iwpm_create_mapinfo - Store local and mapped IPv4/IPv6 address
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* info in a hash table
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* @local_addr: Local ip/tcp address
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* @mapped_addr: Mapped local ip/tcp address
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* @nl_client: The index of the netlink client
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*/
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int iwpm_create_mapinfo(struct sockaddr_storage *local_addr,
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struct sockaddr_storage *mapped_addr, u8 nl_client);
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/**
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* iwpm_remove_mapinfo - Remove local and mapped IPv4/IPv6 address
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* info from the hash table
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* @local_addr: Local ip/tcp address
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* @mapped_addr: Mapped local ip/tcp address
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*
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* Returns err code if mapping info is not found in the hash table,
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* otherwise returns 0
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*/
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int iwpm_remove_mapinfo(struct sockaddr_storage *local_addr,
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struct sockaddr_storage *mapped_addr);
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#endif /* _IW_PORTMAP_H */
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