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iwd/src/netconfig.h

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netconfig: Introduce netconfig module netconfig module will be responsible for the orchestration of the network configuration with the IP addresses. iwd creates one netconfig structure per interface index. The purpose of this struct is to hold all of the interface related addressing states such as: assigned dhcp clients, known addresses, routes, etc.
2019-06-26 00:20:52 +02:00
/*
*
* Wireless daemon for Linux
*
* Copyright (C) 2019 Intel Corporation. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
netconfig: Add netconfig-commit API Add netconfig-commit.c whose main method, netconfig_commit actually sets the configuration obtained by l_netconfig to the system netdev, specifically it sets local addresses on the interface, adds routes to the routing table, sets DNS related data and may add entries to the neighbor cache. netconfig-commit.c uses a backend-ops type structure to allow for switching backends. In this commit there's only a default backend that uses l_netconfig_rtnl_apply() and a struct resolve object to write the configuration. netconfig_gateway_to_arp is moved from netconfig.c to netconfig-commit.c (and renamed.) The struct netconfig definition is moved to netconfig.h so that both files can access the settings stored in the struct.
2022-08-29 19:35:57 +02:00
struct netdev;
netconfig: Change public API As a first step to enable the usage of netconfig in ead and prospective transition to be a part of ell, the public API for creation and destruction of the netconfig objects has been renamed and changed. Instead of hiding the netconfig objects inside of netconfig module, the object is now passed back to the caller. The internal queue of netconfig objects remains untouched, due to limitations in ell’s implementation of rtnl. After the proper changes are done to ell, netconfig_list is expected to be removed from netconfig module.
2019-09-27 21:52:17 +02:00
struct netconfig;
netconfig: FILS IP assigment API Add two methods that will allow station to implement FILS IP Address Assigment, one method to decide whether to send the request during association, and fill in the values to be used in the request IE, and another to handle the response IE values received from the server and apply them. The netconfig->rtm_protocol value used when the address is assigned this way remains RTPROT_DHCP because from the user's point of view this is automatic IP assigment by the server, a replacement for DHCP.
2021-08-27 05:02:04 +02:00
struct ie_fils_ip_addr_request_info;
struct ie_fils_ip_addr_response_info;
netconfig: Change public API As a first step to enable the usage of netconfig in ead and prospective transition to be a part of ell, the public API for creation and destruction of the netconfig objects has been renamed and changed. Instead of hiding the netconfig objects inside of netconfig module, the object is now passed back to the caller. The internal queue of netconfig objects remains untouched, due to limitations in ell’s implementation of rtnl. After the proper changes are done to ell, netconfig_list is expected to be removed from netconfig module.
2019-09-27 21:52:17 +02:00
netconfig: Add netconfig event notifier The notifier allows to subscribe for the netconfig events such as ‘connected’.
2019-10-04 21:48:57 +02:00
enum netconfig_event {
NETCONFIG_EVENT_CONNECTED,
netconfig: Handle l_netconfig events Add netconfig_event_handler() that responds to events emitted by the l_netconfig object by calling netconfig_commit, tracking whether we're connected for either address family and emitting NETCONFIG_EVENT_CONNECTED or NETCONFIG_EVENT_FAILED as necessary. NETCONFIG_EVENT_FAILED is a new event as until now failures would cause the netconfig state machine to stop but no event emitted so that station.c could take action. As before, these events are only emitted based on the IPv4 configuration state, not IPv6.
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NETCONFIG_EVENT_FAILED,
netconfig: Add netconfig event notifier The notifier allows to subscribe for the netconfig events such as ‘connected’.
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};
typedef void (*netconfig_notify_func_t)(enum netconfig_event event,
void *user_data);
netconfig: Add netconfig-commit API Add netconfig-commit.c whose main method, netconfig_commit actually sets the configuration obtained by l_netconfig to the system netdev, specifically it sets local addresses on the interface, adds routes to the routing table, sets DNS related data and may add entries to the neighbor cache. netconfig-commit.c uses a backend-ops type structure to allow for switching backends. In this commit there's only a default backend that uses l_netconfig_rtnl_apply() and a struct resolve object to write the configuration. netconfig_gateway_to_arp is moved from netconfig.c to netconfig-commit.c (and renamed.) The struct netconfig definition is moved to netconfig.h so that both files can access the settings stored in the struct.
2022-08-29 19:35:57 +02:00
struct netconfig {
struct l_netconfig *nc;
struct netdev *netdev;
char *mdns;
struct ie_fils_ip_addr_response_info *fils_override;
bool enabled[2];
bool static_config[2];
bool gateway_overridden[2];
bool dns_overridden[2];
netconfig: Avoid generating events after netconfig_reset Similarly to l_netconfig track whether IWD's netconfig is active (from the moment of netconfig_configure() till netconfig_reset()) using a "started" flag and avoid handling or emitting any events after "started" is cleared. This fixes an occasional issue with the Netconfig Agent backend where station would reset netconfig, netconfig would issue DBus calls to clear addresses and routes, station would go into DISCONNECTING, perhaps finish and go into DISCONNECTED and after a while the DBus calls would come back with an error which would cause a NETCONFIG_EVENT_FAILED causing station to call netdev_disconnct() for a second time and transition to and get stuck in DISCONNECTING.
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bool started;
netconfig: Handle l_netconfig events Add netconfig_event_handler() that responds to events emitted by the l_netconfig object by calling netconfig_commit, tracking whether we're connected for either address family and emitting NETCONFIG_EVENT_CONNECTED or NETCONFIG_EVENT_FAILED as necessary. NETCONFIG_EVENT_FAILED is a new event as until now failures would cause the netconfig state machine to stop but no event emitted so that station.c could take action. As before, these events are only emitted based on the IPv4 configuration state, not IPv6.
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bool connected[2];
netconfig: Skip update if resolver data unchanged
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char **dns_list;
char **domains;
netconfig: Add netconfig-commit API Add netconfig-commit.c whose main method, netconfig_commit actually sets the configuration obtained by l_netconfig to the system netdev, specifically it sets local addresses on the interface, adds routes to the routing table, sets DNS related data and may add entries to the neighbor cache. netconfig-commit.c uses a backend-ops type structure to allow for switching backends. In this commit there's only a default backend that uses l_netconfig_rtnl_apply() and a struct resolve object to write the configuration. netconfig_gateway_to_arp is moved from netconfig.c to netconfig-commit.c (and renamed.) The struct netconfig definition is moved to netconfig.h so that both files can access the settings stored in the struct.
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const struct l_settings *active_settings;
netconfig_notify_func_t notify;
void *user_data;
struct resolve *resolve;
void *commit_data;
};
/* 0 for AF_INET, 1 for AF_INET6 */
#define INDEX_FOR_AF(af) ((af) != AF_INET)
netconfig: Move loading settings to new method, refactor Split loading settings out of network_configure into a new method, network_load_settings. Make sure both consistently handle errors by printing messages and informing the caller.
2021-08-27 05:02:03 +02:00
bool netconfig_load_settings(struct netconfig *netconfig,
netconfig: Set address at configure time netconfig_load_settings is called when establishing a new initial association to a network. This function tries to update dhcp/dhcpv6 clients with the MAC address of the netdev being used. However, it is too early to update the MAC here since netdev might need to powercycle the underlying network device in order to update the MAC (i.e. when AddressRandomization="network" is used). If the MAC is set incorrectly, DHCP clients are unable to obtain the lease properly and station is stuck in "connecting" mode indefinitely. Fix this by delaying MAC address update until netconfig_configure() is invoked. Fixes: ad228461abbf ("netconfig: Move loading settings to new method, refactor")
2021-09-27 18:21:40 +02:00
const struct l_settings *active_settings);
netconfig: Move loading settings to new method, refactor Split loading settings out of network_configure into a new method, network_load_settings. Make sure both consistently handle errors by printing messages and informing the caller.
2021-08-27 05:02:03 +02:00
bool netconfig_configure(struct netconfig *netconfig,
netconfig: Add netconfig event notifier The notifier allows to subscribe for the netconfig events such as ‘connected’.
2019-10-04 21:48:57 +02:00
netconfig_notify_func_t notify,
void *user_data);
netconfig: netconfig_reconfigure check bool for setting ARP Only set the gateway to the ARP cache if the caller requests.
2021-11-03 23:15:02 +01:00
bool netconfig_reconfigure(struct netconfig *netconfig, bool set_arp_gw);
netconfig: Decouple from station state Instead of relying on station state changed signal, netconfig introduces three new API calls to configure, re-configure and reset the network configurations. The owner of netconfig object is responsible for initiating the re-configuration of the device depending on its state.
2019-09-30 18:35:51 +02:00
bool netconfig_reset(struct netconfig *netconfig);
netconfig: Implement netconfig_get_dhcp_server_ipv4 This uses l_dhcp_lease_get_server_id to get the IP of the server that offered us our current lease. l_dhcp_lease_get_server_id returns the vaue of the L_DHCP_OPTION_SERVER_IDENTIFIER option, which is the address that any unicast DHCP frames are supposed to be sent to so it seems to be the best way to get the P2P group owner's IP address as a P2P-client.
2020-07-11 03:00:50 +02:00
char *netconfig_get_dhcp_server_ipv4(struct netconfig *netconfig);
netconfig: FILS IP assigment API Add two methods that will allow station to implement FILS IP Address Assigment, one method to decide whether to send the request during association, and fill in the values to be used in the request IE, and another to handle the response IE values received from the server and apply them. The netconfig->rtm_protocol value used when the address is assigned this way remains RTPROT_DHCP because from the user's point of view this is automatic IP assigment by the server, a replacement for DHCP.
2021-08-27 05:02:04 +02:00
bool netconfig_get_fils_ip_req(struct netconfig *netconfig,
struct ie_fils_ip_addr_request_info *info);
void netconfig_handle_fils_ip_resp(struct netconfig *netconfig,
const struct ie_fils_ip_addr_response_info *info);
netconfig: Add netconfig-commit API Add netconfig-commit.c whose main method, netconfig_commit actually sets the configuration obtained by l_netconfig to the system netdev, specifically it sets local addresses on the interface, adds routes to the routing table, sets DNS related data and may add entries to the neighbor cache. netconfig-commit.c uses a backend-ops type structure to allow for switching backends. In this commit there's only a default backend that uses l_netconfig_rtnl_apply() and a struct resolve object to write the configuration. netconfig_gateway_to_arp is moved from netconfig.c to netconfig-commit.c (and renamed.) The struct netconfig definition is moved to netconfig.h so that both files can access the settings stored in the struct.
2022-08-29 19:35:57 +02:00
bool netconfig_use_fils_addr(struct netconfig *netconfig, int af);
netconfig: Decouple from station state Instead of relying on station state changed signal, netconfig introduces three new API calls to configure, re-configure and reset the network configurations. The owner of netconfig object is responsible for initiating the re-configuration of the device depending on its state.
2019-09-30 18:35:51 +02:00
netconfig: Change public API As a first step to enable the usage of netconfig in ead and prospective transition to be a part of ell, the public API for creation and destruction of the netconfig objects has been renamed and changed. Instead of hiding the netconfig objects inside of netconfig module, the object is now passed back to the caller. The internal queue of netconfig objects remains untouched, due to limitations in ell’s implementation of rtnl. After the proper changes are done to ell, netconfig_list is expected to be removed from netconfig module.
2019-09-27 21:52:17 +02:00
struct netconfig *netconfig_new(uint32_t ifindex);
void netconfig_destroy(struct netconfig *netconfig);
treewide: Parse EnableNetworkConfiguration in one place Add netconfig_enabled() and use that in all places that want to know whether network configuration is enabled. Drop the enable_network_config deprecated setting, which was only being handled in one of these 5 or so places.
2021-10-21 10:50:30 +02:00
bool netconfig_enabled(void);
netconfig: Add netconfig-commit API Add netconfig-commit.c whose main method, netconfig_commit actually sets the configuration obtained by l_netconfig to the system netdev, specifically it sets local addresses on the interface, adds routes to the routing table, sets DNS related data and may add entries to the neighbor cache. netconfig-commit.c uses a backend-ops type structure to allow for switching backends. In this commit there's only a default backend that uses l_netconfig_rtnl_apply() and a struct resolve object to write the configuration. netconfig_gateway_to_arp is moved from netconfig.c to netconfig-commit.c (and renamed.) The struct netconfig definition is moved to netconfig.h so that both files can access the settings stored in the struct.
2022-08-29 19:35:57 +02:00
void netconfig_commit_init(struct netconfig *netconfig);
void netconfig_commit_free(struct netconfig *netconfig, const char *reasonstr);
void netconfig_commit(struct netconfig *netconfig, uint8_t family,
enum l_netconfig_event event);
netconfig: Add NetworkConfigurationAgent DBus API Add a second netconfig-commit backend which, if enabled, doesn't directly send any of the network configuration to the kernel or system files but delegates the operation to an interested client's D-Bus method as described in doc/agent-api.txt. This backend is switched to when a client registers a netconfig agent object and is swiched away from when the client disconnects or unregisters the agent. Only one netconfig agent can be registered any given time.
2022-08-29 19:36:00 +02:00
int netconfig_register_agent(const char *name, const char *path);
int netconfig_unregister_agent(const char *name, const char *path);
netconfig: Add netconfig-commit API Add netconfig-commit.c whose main method, netconfig_commit actually sets the configuration obtained by l_netconfig to the system netdev, specifically it sets local addresses on the interface, adds routes to the routing table, sets DNS related data and may add entries to the neighbor cache. netconfig-commit.c uses a backend-ops type structure to allow for switching backends. In this commit there's only a default backend that uses l_netconfig_rtnl_apply() and a struct resolve object to write the configuration. netconfig_gateway_to_arp is moved from netconfig.c to netconfig-commit.c (and renamed.) The struct netconfig definition is moved to netconfig.h so that both files can access the settings stored in the struct.
2022-08-29 19:35:57 +02:00
void netconfig_dhcp_gateway_to_arp(struct netconfig *netconfig);
netconfig: Re-add FILS handling Load the settings from FILS IE data into our l_netconfig instance when appropriate.
2022-08-29 19:35:59 +02:00
void netconfig_commit_fils_macs(struct netconfig *netconfig, uint8_t family);
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