diff options
Diffstat (limited to 'src/libcharon/kernel')
| -rw-r--r-- | src/libcharon/kernel/kernel_handler.h | 2 | ||||
| -rw-r--r-- | src/libcharon/kernel/kernel_interface.c | 523 | ||||
| -rw-r--r-- | src/libcharon/kernel/kernel_interface.h | 483 | ||||
| -rw-r--r-- | src/libcharon/kernel/kernel_ipsec.c | 29 | ||||
| -rw-r--r-- | src/libcharon/kernel/kernel_ipsec.h | 292 | ||||
| -rw-r--r-- | src/libcharon/kernel/kernel_listener.h | 96 | ||||
| -rw-r--r-- | src/libcharon/kernel/kernel_net.h | 145 |
7 files changed, 1 insertions, 1569 deletions
diff --git a/src/libcharon/kernel/kernel_handler.h b/src/libcharon/kernel/kernel_handler.h index f1fa0bdfc..48ad6889c 100644 --- a/src/libcharon/kernel/kernel_handler.h +++ b/src/libcharon/kernel/kernel_handler.h @@ -15,7 +15,7 @@ /** * @defgroup kernel_handler kernel_handler - * @{ @ingroup kernel + * @{ @ingroup ckernel */ #ifndef KERNEL_HANDLER_H_ diff --git a/src/libcharon/kernel/kernel_interface.c b/src/libcharon/kernel/kernel_interface.c deleted file mode 100644 index cecaef728..000000000 --- a/src/libcharon/kernel/kernel_interface.c +++ /dev/null @@ -1,523 +0,0 @@ -/* - * Copyright (C) 2008-2010 Tobias Brunner - * Hochschule fuer Technik Rapperswil - * Copyright (C) 2010 Martin Willi - * Copyright (C) 2010 revosec AG - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. - * - * This program 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 General Public License - * for more details. - */ - -#include "kernel_interface.h" - -#include <daemon.h> -#include <threading/mutex.h> -#include <utils/linked_list.h> - -typedef struct private_kernel_interface_t private_kernel_interface_t; - -/** - * Private data of a kernel_interface_t object. - */ -struct private_kernel_interface_t { - - /** - * Public part of kernel_interface_t object. - */ - kernel_interface_t public; - - /** - * ipsec interface - */ - kernel_ipsec_t *ipsec; - - /** - * network interface - */ - kernel_net_t *net; - - /** - * mutex for listeners - */ - mutex_t *mutex; - - /** - * list of registered listeners - */ - linked_list_t *listeners; -}; - -METHOD(kernel_interface_t, get_spi, status_t, - private_kernel_interface_t *this, host_t *src, host_t *dst, - u_int8_t protocol, u_int32_t reqid, u_int32_t *spi) -{ - if (!this->ipsec) - { - return NOT_SUPPORTED; - } - return this->ipsec->get_spi(this->ipsec, src, dst, protocol, reqid, spi); -} - -METHOD(kernel_interface_t, get_cpi, status_t, - private_kernel_interface_t *this, host_t *src, host_t *dst, - u_int32_t reqid, u_int16_t *cpi) -{ - if (!this->ipsec) - { - return NOT_SUPPORTED; - } - return this->ipsec->get_cpi(this->ipsec, src, dst, reqid, cpi); -} - -METHOD(kernel_interface_t, add_sa, status_t, - private_kernel_interface_t *this, host_t *src, host_t *dst, - u_int32_t spi, u_int8_t protocol, u_int32_t reqid, - mark_t mark, lifetime_cfg_t *lifetime, u_int16_t enc_alg, chunk_t enc_key, - u_int16_t int_alg, chunk_t int_key, ipsec_mode_t mode, u_int16_t ipcomp, - u_int16_t cpi, bool encap, bool inbound, traffic_selector_t *src_ts, - traffic_selector_t *dst_ts) -{ - if (!this->ipsec) - { - return NOT_SUPPORTED; - } - return this->ipsec->add_sa(this->ipsec, src, dst, spi, protocol, reqid, - mark, lifetime, enc_alg, enc_key, int_alg, int_key, mode, ipcomp, - cpi, encap, inbound, src_ts, dst_ts); -} - -METHOD(kernel_interface_t, update_sa, status_t, - private_kernel_interface_t *this, u_int32_t spi, u_int8_t protocol, - u_int16_t cpi, host_t *src, host_t *dst, host_t *new_src, host_t *new_dst, - bool encap, bool new_encap, mark_t mark) -{ - if (!this->ipsec) - { - return NOT_SUPPORTED; - } - return this->ipsec->update_sa(this->ipsec, spi, protocol, cpi, src, dst, - new_src, new_dst, encap, new_encap, mark); -} - -METHOD(kernel_interface_t, query_sa, status_t, - private_kernel_interface_t *this, host_t *src, host_t *dst, - u_int32_t spi, u_int8_t protocol, mark_t mark, u_int64_t *bytes) -{ - if (!this->ipsec) - { - return NOT_SUPPORTED; - } - return this->ipsec->query_sa(this->ipsec, src, dst, spi, protocol, mark, bytes); -} - -METHOD(kernel_interface_t, del_sa, status_t, - private_kernel_interface_t *this, host_t *src, host_t *dst, u_int32_t spi, - u_int8_t protocol, u_int16_t cpi, mark_t mark) -{ - if (!this->ipsec) - { - return NOT_SUPPORTED; - } - return this->ipsec->del_sa(this->ipsec, src, dst, spi, protocol, cpi, mark); -} - -METHOD(kernel_interface_t, add_policy, status_t, - private_kernel_interface_t *this, host_t *src, host_t *dst, - traffic_selector_t *src_ts, traffic_selector_t *dst_ts, - policy_dir_t direction, u_int32_t spi, u_int8_t protocol, - u_int32_t reqid, mark_t mark, ipsec_mode_t mode, u_int16_t ipcomp, - u_int16_t cpi, bool routed) -{ - if (!this->ipsec) - { - return NOT_SUPPORTED; - } - return this->ipsec->add_policy(this->ipsec, src, dst, src_ts, dst_ts, - direction, spi, protocol, reqid, mark, mode, ipcomp, cpi, routed); -} - -METHOD(kernel_interface_t, query_policy, status_t, - private_kernel_interface_t *this, traffic_selector_t *src_ts, - traffic_selector_t *dst_ts, policy_dir_t direction, mark_t mark, - u_int32_t *use_time) -{ - if (!this->ipsec) - { - return NOT_SUPPORTED; - } - return this->ipsec->query_policy(this->ipsec, src_ts, dst_ts, - direction, mark, use_time); -} - -METHOD(kernel_interface_t, del_policy, status_t, - private_kernel_interface_t *this, traffic_selector_t *src_ts, - traffic_selector_t *dst_ts, policy_dir_t direction, mark_t mark, - bool unrouted) -{ - if (!this->ipsec) - { - return NOT_SUPPORTED; - } - return this->ipsec->del_policy(this->ipsec, src_ts, dst_ts, - direction, mark, unrouted); -} - -METHOD(kernel_interface_t, get_source_addr, host_t*, - private_kernel_interface_t *this, host_t *dest, host_t *src) -{ - if (!this->net) - { - return NULL; - } - return this->net->get_source_addr(this->net, dest, src); -} - -METHOD(kernel_interface_t, get_nexthop, host_t*, - private_kernel_interface_t *this, host_t *dest) -{ - if (!this->net) - { - return NULL; - } - return this->net->get_nexthop(this->net, dest); -} - -METHOD(kernel_interface_t, get_interface, char*, - private_kernel_interface_t *this, host_t *host) -{ - if (!this->net) - { - return NULL; - } - return this->net->get_interface(this->net, host); -} - -METHOD(kernel_interface_t, create_address_enumerator, enumerator_t*, - private_kernel_interface_t *this, bool include_down_ifaces, - bool include_virtual_ips) -{ - if (!this->net) - { - return enumerator_create_empty(); - } - return this->net->create_address_enumerator(this->net, include_down_ifaces, - include_virtual_ips); -} - -METHOD(kernel_interface_t, add_ip, status_t, - private_kernel_interface_t *this, host_t *virtual_ip, host_t *iface_ip) -{ - if (!this->net) - { - return NOT_SUPPORTED; - } - return this->net->add_ip(this->net, virtual_ip, iface_ip); -} - -METHOD(kernel_interface_t, del_ip, status_t, - private_kernel_interface_t *this, host_t *virtual_ip) -{ - if (!this->net) - { - return NOT_SUPPORTED; - } - return this->net->del_ip(this->net, virtual_ip); -} - -METHOD(kernel_interface_t, add_route, status_t, - private_kernel_interface_t *this, chunk_t dst_net, - u_int8_t prefixlen, host_t *gateway, host_t *src_ip, char *if_name) -{ - if (!this->net) - { - return NOT_SUPPORTED; - } - return this->net->add_route(this->net, dst_net, prefixlen, gateway, - src_ip, if_name); -} - -METHOD(kernel_interface_t, del_route, status_t, - private_kernel_interface_t *this, chunk_t dst_net, - u_int8_t prefixlen, host_t *gateway, host_t *src_ip, char *if_name) -{ - if (!this->net) - { - return NOT_SUPPORTED; - } - return this->net->del_route(this->net, dst_net, prefixlen, gateway, - src_ip, if_name); -} - -METHOD(kernel_interface_t, bypass_socket, bool, - private_kernel_interface_t *this, int fd, int family) -{ - if (!this->ipsec) - { - return FALSE; - } - return this->ipsec->bypass_socket(this->ipsec, fd, family); -} - -METHOD(kernel_interface_t, get_address_by_ts, status_t, - private_kernel_interface_t *this, traffic_selector_t *ts, host_t **ip) -{ - enumerator_t *addrs; - host_t *host; - int family; - bool found = FALSE; - - DBG2(DBG_KNL, "getting a local address in traffic selector %R", ts); - - /* if we have a family which includes localhost, we do not - * search for an IP, we use the default */ - family = ts->get_type(ts) == TS_IPV4_ADDR_RANGE ? AF_INET : AF_INET6; - - if (family == AF_INET) - { - host = host_create_from_string("127.0.0.1", 0); - } - else - { - host = host_create_from_string("::1", 0); - } - - if (ts->includes(ts, host)) - { - *ip = host_create_any(family); - host->destroy(host); - DBG2(DBG_KNL, "using host %H", *ip); - return SUCCESS; - } - host->destroy(host); - - addrs = create_address_enumerator(this, TRUE, TRUE); - while (addrs->enumerate(addrs, (void**)&host)) - { - if (ts->includes(ts, host)) - { - found = TRUE; - *ip = host->clone(host); - break; - } - } - addrs->destroy(addrs); - - if (!found) - { - DBG1(DBG_KNL, "no local address found in traffic selector %R", ts); - return FAILED; - } - - DBG2(DBG_KNL, "using host %H", *ip); - return SUCCESS; -} - - -METHOD(kernel_interface_t, add_ipsec_interface, void, - private_kernel_interface_t *this, kernel_ipsec_constructor_t constructor) -{ - if (!this->ipsec) - { - this->ipsec = constructor(); - } -} - -METHOD(kernel_interface_t, remove_ipsec_interface, void, - private_kernel_interface_t *this, kernel_ipsec_constructor_t constructor) -{ - /* TODO: replace if interface currently in use */ -} - -METHOD(kernel_interface_t, add_net_interface, void, - private_kernel_interface_t *this, kernel_net_constructor_t constructor) -{ - if (!this->net) - { - this->net = constructor(); - } -} - -METHOD(kernel_interface_t, remove_net_interface, void, - private_kernel_interface_t *this, kernel_net_constructor_t constructor) -{ - /* TODO: replace if interface currently in use */ -} - -METHOD(kernel_interface_t, add_listener, void, - private_kernel_interface_t *this, kernel_listener_t *listener) -{ - this->mutex->lock(this->mutex); - this->listeners->insert_last(this->listeners, listener); - this->mutex->unlock(this->mutex); -} - -METHOD(kernel_interface_t, remove_listener, void, - private_kernel_interface_t *this, kernel_listener_t *listener) -{ - this->mutex->lock(this->mutex); - this->listeners->remove(this->listeners, listener, NULL); - this->mutex->unlock(this->mutex); -} - -METHOD(kernel_interface_t, acquire, void, - private_kernel_interface_t *this, u_int32_t reqid, - traffic_selector_t *src_ts, traffic_selector_t *dst_ts) -{ - kernel_listener_t *listener; - enumerator_t *enumerator; - this->mutex->lock(this->mutex); - enumerator = this->listeners->create_enumerator(this->listeners); - while (enumerator->enumerate(enumerator, &listener)) - { - if (listener->acquire && - !listener->acquire(listener, reqid, src_ts, dst_ts)) - { - this->listeners->remove_at(this->listeners, enumerator); - } - } - enumerator->destroy(enumerator); - this->mutex->unlock(this->mutex); -} - -METHOD(kernel_interface_t, expire, void, - private_kernel_interface_t *this, u_int32_t reqid, u_int8_t protocol, - u_int32_t spi, bool hard) -{ - kernel_listener_t *listener; - enumerator_t *enumerator; - this->mutex->lock(this->mutex); - enumerator = this->listeners->create_enumerator(this->listeners); - while (enumerator->enumerate(enumerator, &listener)) - { - if (listener->expire && - !listener->expire(listener, reqid, protocol, spi, hard)) - { - this->listeners->remove_at(this->listeners, enumerator); - } - } - enumerator->destroy(enumerator); - this->mutex->unlock(this->mutex); -} - -METHOD(kernel_interface_t, mapping, void, - private_kernel_interface_t *this, u_int32_t reqid, u_int32_t spi, - host_t *remote) -{ - kernel_listener_t *listener; - enumerator_t *enumerator; - this->mutex->lock(this->mutex); - enumerator = this->listeners->create_enumerator(this->listeners); - while (enumerator->enumerate(enumerator, &listener)) - { - if (listener->mapping && - !listener->mapping(listener, reqid, spi, remote)) - { - this->listeners->remove_at(this->listeners, enumerator); - } - } - enumerator->destroy(enumerator); - this->mutex->unlock(this->mutex); -} - -METHOD(kernel_interface_t, migrate, void, - private_kernel_interface_t *this, u_int32_t reqid, - traffic_selector_t *src_ts, traffic_selector_t *dst_ts, - policy_dir_t direction, host_t *local, host_t *remote) -{ - kernel_listener_t *listener; - enumerator_t *enumerator; - this->mutex->lock(this->mutex); - enumerator = this->listeners->create_enumerator(this->listeners); - while (enumerator->enumerate(enumerator, &listener)) - { - if (listener->migrate && - !listener->migrate(listener, reqid, src_ts, dst_ts, direction, - local, remote)) - { - this->listeners->remove_at(this->listeners, enumerator); - } - } - enumerator->destroy(enumerator); - this->mutex->unlock(this->mutex); -} - -static bool call_roam(kernel_listener_t *listener, bool *roam) -{ - return listener->roam && !listener->roam(listener, *roam); -} - -METHOD(kernel_interface_t, roam, void, - private_kernel_interface_t *this, bool address) -{ - this->mutex->lock(this->mutex); - this->listeners->remove(this->listeners, &address, (void*)call_roam); - this->mutex->unlock(this->mutex); -} - -METHOD(kernel_interface_t, destroy, void, - private_kernel_interface_t *this) -{ - DESTROY_IF(this->ipsec); - DESTROY_IF(this->net); - this->mutex->destroy(this->mutex); - this->listeners->destroy(this->listeners); - free(this); -} - -/* - * Described in header-file - */ -kernel_interface_t *kernel_interface_create() -{ - private_kernel_interface_t *this; - - INIT(this, - .public = { - .get_spi = _get_spi, - .get_cpi = _get_cpi, - .add_sa = _add_sa, - .update_sa = _update_sa, - .query_sa = _query_sa, - .del_sa = _del_sa, - .add_policy = _add_policy, - .query_policy = _query_policy, - .del_policy = _del_policy, - .get_source_addr = _get_source_addr, - .get_nexthop = _get_nexthop, - .get_interface = _get_interface, - .create_address_enumerator = _create_address_enumerator, - .add_ip = _add_ip, - .del_ip = _del_ip, - .add_route = _add_route, - .del_route = _del_route, - .bypass_socket = _bypass_socket, - - .get_address_by_ts = _get_address_by_ts, - .add_ipsec_interface = _add_ipsec_interface, - .remove_ipsec_interface = _remove_ipsec_interface, - .add_net_interface = _add_net_interface, - .remove_net_interface = _remove_net_interface, - - .add_listener = _add_listener, - .remove_listener = _remove_listener, - .acquire = _acquire, - .expire = _expire, - .mapping = _mapping, - .migrate = _migrate, - .roam = _roam, - .destroy = _destroy, - }, - .mutex = mutex_create(MUTEX_TYPE_DEFAULT), - .listeners = linked_list_create(), - ); - - return &this->public; -} - diff --git a/src/libcharon/kernel/kernel_interface.h b/src/libcharon/kernel/kernel_interface.h deleted file mode 100644 index 06c526581..000000000 --- a/src/libcharon/kernel/kernel_interface.h +++ /dev/null @@ -1,483 +0,0 @@ -/* - * Copyright (C) 2006-2010 Tobias Brunner - * Copyright (C) 2006 Daniel Roethlisberger - * Copyright (C) 2005-2006 Martin Willi - * Copyright (C) 2005 Jan Hutter - * Hochschule fuer Technik Rapperswil - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. - * - * This program 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 General Public License - * for more details. - */ - -/** - * @defgroup kernel_interface kernel_interface - * @{ @ingroup kernel - */ - -#ifndef KERNEL_INTERFACE_H_ -#define KERNEL_INTERFACE_H_ - -typedef struct kernel_interface_t kernel_interface_t; - -#include <utils/host.h> -#include <crypto/prf_plus.h> -#include <encoding/payloads/proposal_substructure.h> - -#include <kernel/kernel_listener.h> -#include <kernel/kernel_ipsec.h> -#include <kernel/kernel_net.h> - -/** - * Constructor function for ipsec kernel interface - */ -typedef kernel_ipsec_t* (*kernel_ipsec_constructor_t)(void); - -/** - * Constructor function for network kernel interface - */ -typedef kernel_net_t* (*kernel_net_constructor_t)(void); - -/** - * Manager and wrapper for different kernel interfaces. - * - * The kernel interface handles the communication with the kernel - * for SA and policy management and interface and IP address management. - */ -struct kernel_interface_t { - - /** - * Get a SPI from the kernel. - * - * @param src source address of SA - * @param dst destination address of SA - * @param protocol protocol for SA (ESP/AH) - * @param reqid unique ID for this SA - * @param spi allocated spi - * @return SUCCESS if operation completed - */ - status_t (*get_spi)(kernel_interface_t *this, host_t *src, host_t *dst, - u_int8_t protocol, u_int32_t reqid, u_int32_t *spi); - - /** - * Get a Compression Parameter Index (CPI) from the kernel. - * - * @param src source address of SA - * @param dst destination address of SA - * @param reqid unique ID for the corresponding SA - * @param cpi allocated cpi - * @return SUCCESS if operation completed - */ - status_t (*get_cpi)(kernel_interface_t *this, host_t *src, host_t *dst, - u_int32_t reqid, u_int16_t *cpi); - - /** - * Add an SA to the SAD. - * - * add_sa() may update an already allocated - * SPI (via get_spi). In this case, the replace - * flag must be set. - * This function does install a single SA for a - * single protocol in one direction. - * - * @param src source address for this SA - * @param dst destination address for this SA - * @param spi SPI allocated by us or remote peer - * @param protocol protocol for this SA (ESP/AH) - * @param reqid unique ID for this SA - * @param mark optional mark for this SA - * @param lifetime lifetime_cfg_t for this SA - * @param enc_alg Algorithm to use for encryption (ESP only) - * @param enc_key key to use for encryption - * @param int_alg Algorithm to use for integrity protection - * @param int_key key to use for integrity protection - * @param mode mode of the SA (tunnel, transport) - * @param ipcomp IPComp transform to use - * @param cpi CPI for IPComp - * @param encap enable UDP encapsulation for NAT traversal - * @param inbound TRUE if this is an inbound SA - * @param src_ts traffic selector with BEET source address - * @param dst_ts traffic selector with BEET destination address - * @return SUCCESS if operation completed - */ - status_t (*add_sa) (kernel_interface_t *this, - host_t *src, host_t *dst, u_int32_t spi, - u_int8_t protocol, u_int32_t reqid, mark_t mark, - lifetime_cfg_t *lifetime, - u_int16_t enc_alg, chunk_t enc_key, - u_int16_t int_alg, chunk_t int_key, - ipsec_mode_t mode, u_int16_t ipcomp, u_int16_t cpi, - bool encap, bool inbound, - traffic_selector_t *src_ts, traffic_selector_t *dst_ts); - - /** - * Update the hosts on an installed SA. - * - * We cannot directly update the destination address as the kernel - * requires the spi, the protocol AND the destination address (and family) - * to identify SAs. Therefore if the destination address changed we - * create a new SA and delete the old one. - * - * @param spi SPI of the SA - * @param protocol protocol for this SA (ESP/AH) - * @param cpi CPI for IPComp, 0 if no IPComp is used - * @param src current source address - * @param dst current destination address - * @param new_src new source address - * @param new_dst new destination address - * @param encap current use of UDP encapsulation - * @param new_encap new use of UDP encapsulation - * @param mark optional mark for this SA - * @return SUCCESS if operation completed, NOT_SUPPORTED if - * the kernel interface can't update the SA - */ - status_t (*update_sa)(kernel_interface_t *this, - u_int32_t spi, u_int8_t protocol, u_int16_t cpi, - host_t *src, host_t *dst, - host_t *new_src, host_t *new_dst, - bool encap, bool new_encap, mark_t mark); - - /** - * Query the number of bytes processed by an SA from the SAD. - * - * @param src source address for this SA - * @param dst destination address for this SA - * @param spi SPI allocated by us or remote peer - * @param protocol protocol for this SA (ESP/AH) - * @param mark optional mark for this SA - * @param[out] bytes the number of bytes processed by SA - * @return SUCCESS if operation completed - */ - status_t (*query_sa) (kernel_interface_t *this, host_t *src, host_t *dst, - u_int32_t spi, u_int8_t protocol, mark_t mark, - u_int64_t *bytes); - - /** - * Delete a previously installed SA from the SAD. - * - * @param src source address for this SA - * @param dst destination address for this SA - * @param spi SPI allocated by us or remote peer - * @param protocol protocol for this SA (ESP/AH) - * @param cpi CPI for IPComp or 0 - * @param mark optional mark for this SA - * @return SUCCESS if operation completed - */ - status_t (*del_sa) (kernel_interface_t *this, host_t *src, host_t *dst, - u_int32_t spi, u_int8_t protocol, u_int16_t cpi, - mark_t mark); - - /** - * Add a policy to the SPD. - * - * A policy is always associated to an SA. Traffic which matches a - * policy is handled by the SA with the same reqid. - * - * @param src source address of SA - * @param dst dest address of SA - * @param src_ts traffic selector to match traffic source - * @param dst_ts traffic selector to match traffic dest - * @param direction direction of traffic, POLICY_(IN|OUT|FWD) - * @param spi SPI of SA - * @param protocol protocol to use to protect traffic (AH/ESP) - * @param reqid unique ID of an SA to use to enforce policy - * @param mark mark for this policy - * @param mode mode of SA (tunnel, transport) - * @param ipcomp the IPComp transform used - * @param cpi CPI for IPComp - * @param routed TRUE, if this policy is routed in the kernel - * @return SUCCESS if operation completed - */ - status_t (*add_policy) (kernel_interface_t *this, - host_t *src, host_t *dst, - traffic_selector_t *src_ts, - traffic_selector_t *dst_ts, - policy_dir_t direction, u_int32_t spi, - u_int8_t protocol, u_int32_t reqid, - mark_t mark, ipsec_mode_t mode, u_int16_t ipcomp, - u_int16_t cpi, bool routed); - - /** - * Query the use time of a policy. - * - * The use time of a policy is the time the policy was used - * for the last time. - * - * @param src_ts traffic selector to match traffic source - * @param dst_ts traffic selector to match traffic dest - * @param direction direction of traffic, POLICY_(IN|OUT|FWD) - * @param mark optional mark - * @param[out] use_time the time of this SA's last use - * @return SUCCESS if operation completed - */ - status_t (*query_policy) (kernel_interface_t *this, - traffic_selector_t *src_ts, - traffic_selector_t *dst_ts, - policy_dir_t direction, mark_t mark, - u_int32_t *use_time); - - /** - * Remove a policy from the SPD. - * - * The kernel interface implements reference counting for policies. - * If the same policy is installed multiple times (in the case of rekeying), - * the reference counter is increased. del_policy() decreases the ref counter - * and removes the policy only when no more references are available. - * - * @param src_ts traffic selector to match traffic source - * @param dst_ts traffic selector to match traffic dest - * @param direction direction of traffic, POLICY_(IN|OUT|FWD) - * @param mark optional mark - * @param unrouted TRUE, if this policy is unrouted from the kernel - * @return SUCCESS if operation completed - */ - status_t (*del_policy) (kernel_interface_t *this, - traffic_selector_t *src_ts, - traffic_selector_t *dst_ts, - policy_dir_t direction, mark_t mark, - bool unrouted); - - /** - * Get our outgoing source address for a destination. - * - * Does a route lookup to get the source address used to reach dest. - * The returned host is allocated and must be destroyed. - * An optional src address can be used to check if a route is available - * for given source to dest. - * - * @param dest target destination address - * @param src source address to check, or NULL - * @return outgoing source address, NULL if unreachable - */ - host_t* (*get_source_addr)(kernel_interface_t *this, - host_t *dest, host_t *src); - - /** - * Get the next hop for a destination. - * - * Does a route lookup to get the next hop used to reach dest. - * The returned host is allocated and must be destroyed. - * - * @param dest target destination address - * @return next hop address, NULL if unreachable - */ - host_t* (*get_nexthop)(kernel_interface_t *this, host_t *dest); - - /** - * Get the interface name of a local address. - * - * @param host address to get interface name from - * @return allocated interface name, or NULL if not found - */ - char* (*get_interface) (kernel_interface_t *this, host_t *host); - - /** - * Creates an enumerator over all local addresses. - * - * This function blocks an internal cached address list until the - * enumerator gets destroyed. - * The hosts are read-only, do not modify of free. - * - * @param include_down_ifaces TRUE to enumerate addresses from down interfaces - * @param include_virtual_ips TRUE to enumerate virtual ip addresses - * @return enumerator over host_t's - */ - enumerator_t *(*create_address_enumerator) (kernel_interface_t *this, - bool include_down_ifaces, bool include_virtual_ips); - - /** - * Add a virtual IP to an interface. - * - * Virtual IPs are attached to an interface. If an IP is added multiple - * times, the IP is refcounted and not removed until del_ip() was called - * as many times as add_ip(). - * The virtual IP is attached to the interface where the iface_ip is found. - * - * @param virtual_ip virtual ip address to assign - * @param iface_ip IP of an interface to attach virtual IP - * @return SUCCESS if operation completed - */ - status_t (*add_ip) (kernel_interface_t *this, host_t *virtual_ip, - host_t *iface_ip); - - /** - * Remove a virtual IP from an interface. - * - * The kernel interface uses refcounting, see add_ip(). - * - * @param virtual_ip virtual ip address to assign - * @return SUCCESS if operation completed - */ - status_t (*del_ip) (kernel_interface_t *this, host_t *virtual_ip); - - /** - * Add a route. - * - * @param dst_net destination net - * @param prefixlen destination net prefix length - * @param gateway gateway for this route - * @param src_ip sourc ip of the route - * @param if_name name of the interface the route is bound to - * @return SUCCESS if operation completed - * ALREADY_DONE if the route already exists - */ - status_t (*add_route) (kernel_interface_t *this, chunk_t dst_net, - u_int8_t prefixlen, host_t *gateway, host_t *src_ip, - char *if_name); - - /** - * Delete a route. - * - * @param dst_net destination net - * @param prefixlen destination net prefix length - * @param gateway gateway for this route - * @param src_ip sourc ip of the route - * @param if_name name of the interface the route is bound to - * @return SUCCESS if operation completed - */ - status_t (*del_route) (kernel_interface_t *this, chunk_t dst_net, - u_int8_t prefixlen, host_t *gateway, host_t *src_ip, - char *if_name); - - /** - * Set up a bypass policy for a given socket. - * - * @param fd socket file descriptor to setup policy for - * @param family protocol family of the socket - * @return TRUE of policy set up successfully - */ - bool (*bypass_socket)(kernel_interface_t *this, int fd, int family); - - /** - * manager methods - */ - - /** - * Tries to find an ip address of a local interface that is included in the - * supplied traffic selector. - * - * @param ts traffic selector - * @param ip returned ip (has to be destroyed) - * @return SUCCESS if address found - */ - status_t (*get_address_by_ts)(kernel_interface_t *this, - traffic_selector_t *ts, host_t **ip); - - /** - * Register an ipsec kernel interface constructor on the manager. - * - * @param create constructor to register - */ - void (*add_ipsec_interface)(kernel_interface_t *this, - kernel_ipsec_constructor_t create); - - /** - * Unregister an ipsec kernel interface constructor. - * - * @param create constructor to unregister - */ - void (*remove_ipsec_interface)(kernel_interface_t *this, - kernel_ipsec_constructor_t create); - - /** - * Register a network kernel interface constructor on the manager. - * - * @param create constructor to register - */ - void (*add_net_interface)(kernel_interface_t *this, - kernel_net_constructor_t create); - - /** - * Unregister a network kernel interface constructor. - * - * @param create constructor to unregister - */ - void (*remove_net_interface)(kernel_interface_t *this, - kernel_net_constructor_t create); - - /** - * Add a listener to the kernel interface. - * - * @param listener listener to add - */ - void (*add_listener)(kernel_interface_t *this, - kernel_listener_t *listener); - - /** - * Remove a listener from the kernel interface. - * - * @param listener listener to remove - */ - void (*remove_listener)(kernel_interface_t *this, - kernel_listener_t *listener); - - /** - * Raise an acquire event. - * - * @param reqid reqid of the policy to acquire - * @param src_ts source traffic selector - * @param dst_ts destination traffic selector - */ - void (*acquire)(kernel_interface_t *this, u_int32_t reqid, - traffic_selector_t *src_ts, traffic_selector_t *dst_ts); - - /** - * Raise an expire event. - * - * @param reqid reqid of the expired SA - * @param protocol protocol of the expired SA - * @param spi spi of the expired SA - * @param hard TRUE if it is a hard expire, FALSE otherwise - */ - void (*expire)(kernel_interface_t *this, u_int32_t reqid, - u_int8_t protocol, u_int32_t spi, bool hard); - - /** - * Raise a mapping event. - * - * @param reqid reqid of the SA - * @param spi spi of the SA - * @param remote new remote host - */ - void (*mapping)(kernel_interface_t *this, u_int32_t reqid, u_int32_t spi, - host_t *remote); - - /** - * Raise a migrate event. - * - * @param reqid reqid of the policy - * @param src_ts source traffic selector - * @param dst_ts destination traffic selector - * @param direction direction of the policy (in|out) - * @param local local host address to be used in the IKE_SA - * @param remote remote host address to be used in the IKE_SA - */ - void (*migrate)(kernel_interface_t *this, u_int32_t reqid, - traffic_selector_t *src_ts, traffic_selector_t *dst_ts, - policy_dir_t direction, host_t *local, host_t *remote); - - /** - * Raise a roam event. - * - * @param address TRUE if address list, FALSE if routing changed - */ - void (*roam)(kernel_interface_t *this, bool address); - - /** - * Destroys a kernel_interface_manager_t object. - */ - void (*destroy) (kernel_interface_t *this); -}; - -/** - * Creates an object of type kernel_interface_t. - */ -kernel_interface_t *kernel_interface_create(void); - -#endif /** KERNEL_INTERFACE_H_ @}*/ diff --git a/src/libcharon/kernel/kernel_ipsec.c b/src/libcharon/kernel/kernel_ipsec.c deleted file mode 100644 index 5b0335b16..000000000 --- a/src/libcharon/kernel/kernel_ipsec.c +++ /dev/null @@ -1,29 +0,0 @@ -/* - * Copyright (C) 2008 Tobias Brunner - * Hochschule fuer Technik Rapperswil - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. - * - * This program 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 General Public License - * for more details. - */ - -#include "kernel_ipsec.h" - -ENUM(ipsec_mode_names, MODE_TRANSPORT, MODE_BEET, - "TRANSPORT", - "TUNNEL", - "BEET", -); - -ENUM(policy_dir_names, POLICY_IN, POLICY_FWD, - "in", - "out", - "fwd" -); - diff --git a/src/libcharon/kernel/kernel_ipsec.h b/src/libcharon/kernel/kernel_ipsec.h deleted file mode 100644 index 340b7e91d..000000000 --- a/src/libcharon/kernel/kernel_ipsec.h +++ /dev/null @@ -1,292 +0,0 @@ -/* - * Copyright (C) 2006-2010 Tobias Brunner - * Copyright (C) 2006 Daniel Roethlisberger - * Copyright (C) 2005-2006 Martin Willi - * Copyright (C) 2005 Jan Hutter - * Hochschule fuer Technik Rapperswil - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. - * - * This program 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 General Public License - * for more details. - */ - -/** - * @defgroup kernel_ipsec kernel_ipsec - * @{ @ingroup kernel - */ - -#ifndef KERNEL_IPSEC_H_ -#define KERNEL_IPSEC_H_ - -typedef enum ipsec_mode_t ipsec_mode_t; -typedef enum policy_dir_t policy_dir_t; -typedef struct kernel_ipsec_t kernel_ipsec_t; - -#include <utils/host.h> -#include <crypto/prf_plus.h> -#include <config/proposal.h> -#include <config/child_cfg.h> - -/** - * Mode of a CHILD_SA. - */ -enum ipsec_mode_t { - /** transport mode, no inner address */ - MODE_TRANSPORT = 1, - /** tunnel mode, inner and outer addresses */ - MODE_TUNNEL, - /** BEET mode, tunnel mode but fixed, bound inner addresses */ - MODE_BEET, -}; - -/** - * enum names for ipsec_mode_t. - */ -extern enum_name_t *ipsec_mode_names; - -/** - * Direction of a policy. These are equal to those - * defined in xfrm.h, but we want to stay implementation - * neutral here. - */ -enum policy_dir_t { - /** Policy for inbound traffic */ - POLICY_IN = 0, - /** Policy for outbound traffic */ - POLICY_OUT = 1, - /** Policy for forwarded traffic */ - POLICY_FWD = 2, -}; - -/** - * enum names for policy_dir_t. - */ -extern enum_name_t *policy_dir_names; - -/** - * Interface to the ipsec subsystem of the kernel. - * - * The kernel ipsec interface handles the communication with the kernel - * for SA and policy management. It allows setup of these, and provides - * further the handling of kernel events. - * Policy information are cached in the interface. This is necessary to do - * reference counting. The Linux kernel does not allow the same policy - * installed twice, but we need this as CHILD_SA exist multiple times - * when rekeying. Thats why we do reference counting of policies. - */ -struct kernel_ipsec_t { - - /** - * Get a SPI from the kernel. - * - * @param src source address of SA - * @param dst destination address of SA - * @param protocol protocol for SA (ESP/AH) - * @param reqid unique ID for this SA - * @param spi allocated spi - * @return SUCCESS if operation completed - */ - status_t (*get_spi)(kernel_ipsec_t *this, host_t *src, host_t *dst, - u_int8_t protocol, u_int32_t reqid, u_int32_t *spi); - - /** - * Get a Compression Parameter Index (CPI) from the kernel. - * - * @param src source address of SA - * @param dst destination address of SA - * @param reqid unique ID for the corresponding SA - * @param cpi allocated cpi - * @return SUCCESS if operation completed - */ - status_t (*get_cpi)(kernel_ipsec_t *this, host_t *src, host_t *dst, - u_int32_t reqid, u_int16_t *cpi); - - /** - * Add an SA to the SAD. - * - * add_sa() may update an already allocated - * SPI (via get_spi). In this case, the replace - * flag must be set. - * This function does install a single SA for a - * single protocol in one direction. - * - * @param src source address for this SA - * @param dst destination address for this SA - * @param spi SPI allocated by us or remote peer - * @param protocol protocol for this SA (ESP/AH) - * @param reqid unique ID for this SA - * @param mark mark for this SA - * @param lifetime lifetime_cfg_t for this SA - * @param enc_alg Algorithm to use for encryption (ESP only) - * @param enc_key key to use for encryption - * @param int_alg Algorithm to use for integrity protection - * @param int_key key to use for integrity protection - * @param mode mode of the SA (tunnel, transport) - * @param ipcomp IPComp transform to use - * @param cpi CPI for IPComp - * @param encap enable UDP encapsulation for NAT traversal - * @param inbound TRUE if this is an inbound SA - * @param src_ts traffic selector with BEET source address - * @param dst_ts traffic selector with BEET destination address - * @return SUCCESS if operation completed - */ - status_t (*add_sa) (kernel_ipsec_t *this, - host_t *src, host_t *dst, u_int32_t spi, - u_int8_t protocol, u_int32_t reqid, - mark_t mark, lifetime_cfg_t *lifetime, - u_int16_t enc_alg, chunk_t enc_key, - u_int16_t int_alg, chunk_t int_key, - ipsec_mode_t mode, u_int16_t ipcomp, u_int16_t cpi, - bool encap, bool inbound, - traffic_selector_t *src_ts, traffic_selector_t *dst_ts); - - /** - * Update the hosts on an installed SA. - * - * We cannot directly update the destination address as the kernel - * requires the spi, the protocol AND the destination address (and family) - * to identify SAs. Therefore if the destination address changed we - * create a new SA and delete the old one. - * - * @param spi SPI of the SA - * @param protocol protocol for this SA (ESP/AH) - * @param cpi CPI for IPComp, 0 if no IPComp is used - * @param src current source address - * @param dst current destination address - * @param new_src new source address - * @param new_dst new destination address - * @param encap current use of UDP encapsulation - * @param new_encap new use of UDP encapsulation - * @param mark optional mark for this SA - * @return SUCCESS if operation completed, NOT_SUPPORTED if - * the kernel interface can't update the SA - */ - status_t (*update_sa)(kernel_ipsec_t *this, - u_int32_t spi, u_int8_t protocol, u_int16_t cpi, - host_t *src, host_t *dst, - host_t *new_src, host_t *new_dst, - bool encap, bool new_encap, mark_t mark); - - /** - * Query the number of bytes processed by an SA from the SAD. - * - * @param src source address for this SA - * @param dst destination address for this SA - * @param spi SPI allocated by us or remote peer - * @param protocol protocol for this SA (ESP/AH) - * @param mark optional mark for this SA - * @param[out] bytes the number of bytes processed by SA - * @return SUCCESS if operation completed - */ - status_t (*query_sa) (kernel_ipsec_t *this, host_t *src, host_t *dst, - u_int32_t spi, u_int8_t protocol, mark_t mark, - u_int64_t *bytes); - - /** - * Delete a previusly installed SA from the SAD. - * - * @param src source address for this SA - * @param dst destination address for this SA - * @param spi SPI allocated by us or remote peer - * @param protocol protocol for this SA (ESP/AH) - * @param cpi CPI for IPComp or 0 - * @param mark optional mark for this SA - * @return SUCCESS if operation completed - */ - status_t (*del_sa) (kernel_ipsec_t *this, host_t *src, host_t *dst, - u_int32_t spi, u_int8_t protocol, u_int16_t cpi, - mark_t mark); - - /** - * Add a policy to the SPD. - * - * A policy is always associated to an SA. Traffic which matches a - * policy is handled by the SA with the same reqid. - * - * @param src source address of SA - * @param dst dest address of SA - * @param src_ts traffic selector to match traffic source - * @param dst_ts traffic selector to match traffic dest - * @param direction direction of traffic, POLICY_(IN|OUT|FWD) - * @param spi SPI of SA - * @param protocol protocol to use to protect traffic (AH/ESP) - * @param reqid unique ID of an SA to use to enforce policy - * @param mark mark for this policy - * @param mode mode of SA (tunnel, transport) - * @param ipcomp the IPComp transform used - * @param cpi CPI for IPComp - * @param routed TRUE, if this policy is routed in the kernel - * @return SUCCESS if operation completed - */ - status_t (*add_policy) (kernel_ipsec_t *this, - host_t *src, host_t *dst, - traffic_selector_t *src_ts, - traffic_selector_t *dst_ts, - policy_dir_t direction, u_int32_t spi, - u_int8_t protocol, u_int32_t reqid, - mark_t mark, ipsec_mode_t mode, - u_int16_t ipcomp, u_int16_t cpi, bool routed); - - /** - * Query the use time of a policy. - * - * The use time of a policy is the time the policy was used for the last - * time. It is not the system time, but a monotonic timestamp as returned - * by time_monotonic. - * - * @param src_ts traffic selector to match traffic source - * @param dst_ts traffic selector to match traffic dest - * @param direction direction of traffic, POLICY_(IN|OUT|FWD) - * @param mark optional mark - * @param[out] use_time the monotonic timestamp of this SA's last use - * @return SUCCESS if operation completed - */ - status_t (*query_policy) (kernel_ipsec_t *this, - traffic_selector_t *src_ts, - traffic_selector_t *dst_ts, - policy_dir_t direction, mark_t mark, - u_int32_t *use_time); - - /** - * Remove a policy from the SPD. - * - * The kernel interface implements reference counting for policies. - * If the same policy is installed multiple times (in the case of rekeying), - * the reference counter is increased. del_policy() decreases the ref counter - * and removes the policy only when no more references are available. - * - * @param src_ts traffic selector to match traffic source - * @param dst_ts traffic selector to match traffic dest - * @param direction direction of traffic, POLICY_(IN|OUT|FWD) - * @param mark optional mark - * @param unrouted TRUE, if this policy is unrouted from the kernel - * @return SUCCESS if operation completed - */ - status_t (*del_policy) (kernel_ipsec_t *this, - traffic_selector_t *src_ts, - traffic_selector_t *dst_ts, - policy_dir_t direction, mark_t mark, - bool unrouted); - - /** - * Install a bypass policy for the given socket. - * - * @param fd socket file descriptor to setup policy for - * @param family protocol family of the socket - * @return TRUE of policy set up successfully - */ - bool (*bypass_socket)(kernel_ipsec_t *this, int fd, int family); - - /** - * Destroy the implementation. - */ - void (*destroy) (kernel_ipsec_t *this); -}; - -#endif /** KERNEL_IPSEC_H_ @}*/ diff --git a/src/libcharon/kernel/kernel_listener.h b/src/libcharon/kernel/kernel_listener.h deleted file mode 100644 index 02e5b809e..000000000 --- a/src/libcharon/kernel/kernel_listener.h +++ /dev/null @@ -1,96 +0,0 @@ -/* - * Copyright (C) 2010 Tobias Brunner - * Hochschule fuer Technik Rapperswil - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. - * - * This program 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 General Public License - * for more details. - */ - -/** - * @defgroup kernel_listener kernel_listener - * @{ @ingroup kernel - */ - -#ifndef KERNEL_LISTENER_H_ -#define KERNEL_LISTENER_H_ - -typedef struct kernel_listener_t kernel_listener_t; - -#include <kernel/kernel_ipsec.h> -#include <selectors/traffic_selector.h> -#include <utils/host.h> - -/** - * Interface for components interested in kernel events. - * - * All hooks are optional. - */ -struct kernel_listener_t { - - /** - * Hook called if an acquire event for a policy is received. - * - * @param reqid reqid of the policy to acquire - * @param src_ts source traffic selector - * @param dst_ts destination traffic selector - * @return TRUE to remain registered, FALSE to unregister - */ - bool (*acquire)(kernel_listener_t *this, u_int32_t reqid, - traffic_selector_t *src_ts, traffic_selector_t *dst_ts); - - /** - * Hook called if an exire event for an IPsec SA is received. - * - * @param reqid reqid of the expired SA - * @param protocol protocol of the expired SA - * @param spi spi of the expired SA - * @param hard TRUE if it is a hard expire, FALSE otherwise - * @return TRUE to remain registered, FALSE to unregister - */ - bool (*expire)(kernel_listener_t *this, u_int32_t reqid, - u_int8_t protocol, u_int32_t spi, bool hard); - - /** - * Hook called if the NAT mappings of an IPsec SA changed. - * - * @param reqid reqid of the SA - * @param spi spi of the SA - * @param remote new remote host - * @return TRUE to remain registered, FALSE to unregister - */ - bool (*mapping)(kernel_listener_t *this, u_int32_t reqid, u_int32_t spi, - host_t *remote); - - /** - * Hook called if a migrate event for a policy is received. - * - * @param reqid reqid of the policy - * @param src_ts source traffic selector - * @param dst_ts destination traffic selector - * @param direction direction of the policy (in|out) - * @param local local host address to be used in the IKE_SA - * @param remote remote host address to be used in the IKE_SA - * @return TRUE to remain registered, FALSE to unregister - */ - bool (*migrate)(kernel_listener_t *this, u_int32_t reqid, - traffic_selector_t *src_ts, traffic_selector_t *dst_ts, - policy_dir_t direction, host_t *local, host_t *remote); - - /** - * Hook called if changes in the networking layer occured (interfaces - * up/down, routes added/deleted etc.). - * - * @param address TRUE if address list, FALSE if routing changed - * @return TRUE to remain registered, FALSE to unregister - */ - bool (*roam)(kernel_listener_t *this, bool address); -}; - -#endif /** KERNEL_LISTENER_H_ @}*/ diff --git a/src/libcharon/kernel/kernel_net.h b/src/libcharon/kernel/kernel_net.h deleted file mode 100644 index 6625332f8..000000000 --- a/src/libcharon/kernel/kernel_net.h +++ /dev/null @@ -1,145 +0,0 @@ -/* - * Copyright (C) 2008 Tobias Brunner - * Copyright (C) 2007 Martin Willi - * Hochschule fuer Technik Rapperswil - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. - * - * This program 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 General Public License - * for more details. - */ - -/** - * @defgroup kernel_net kernel_net - * @{ @ingroup kernel - */ - -#ifndef KERNEL_NET_H_ -#define KERNEL_NET_H_ - -typedef struct kernel_net_t kernel_net_t; - -#include <utils/enumerator.h> -#include <utils/host.h> - -/** - * Interface to the network subsystem of the kernel. - * - * The kernel network interface handles the communication with the kernel - * for interface and IP address management. - */ -struct kernel_net_t { - - /** - * Get our outgoing source address for a destination. - * - * Does a route lookup to get the source address used to reach dest. - * The returned host is allocated and must be destroyed. - * An optional src address can be used to check if a route is available - * for given source to dest. - * - * @param dest target destination address - * @param src source address to check, or NULL - * @return outgoing source address, NULL if unreachable - */ - host_t* (*get_source_addr)(kernel_net_t *this, host_t *dest, host_t *src); - - /** - * Get the next hop for a destination. - * - * Does a route lookup to get the next hop used to reach dest. - * The returned host is allocated and must be destroyed. - * - * @param dest target destination address - * @return next hop address, NULL if unreachable - */ - host_t* (*get_nexthop)(kernel_net_t *this, host_t *dest); - - /** - * Get the interface name of a local address. - * - * @param host address to get interface name from - * @return allocated interface name, or NULL if not found - */ - char* (*get_interface) (kernel_net_t *this, host_t *host); - - /** - * Creates an enumerator over all local addresses. - * - * This function blocks an internal cached address list until the - * enumerator gets destroyed. - * The hosts are read-only, do not modify of free. - * - * @param include_down_ifaces TRUE to enumerate addresses from down interfaces - * @param include_virtual_ips TRUE to enumerate virtual ip addresses - * @return enumerator over host_t's - */ - enumerator_t *(*create_address_enumerator) (kernel_net_t *this, - bool include_down_ifaces, bool include_virtual_ips); - - /** - * Add a virtual IP to an interface. - * - * Virtual IPs are attached to an interface. If an IP is added multiple - * times, the IP is refcounted and not removed until del_ip() was called - * as many times as add_ip(). - * The virtual IP is attached to the interface where the iface_ip is found. - * - * @param virtual_ip virtual ip address to assign - * @param iface_ip IP of an interface to attach virtual IP - * @return SUCCESS if operation completed - */ - status_t (*add_ip) (kernel_net_t *this, host_t *virtual_ip, - host_t *iface_ip); - - /** - * Remove a virtual IP from an interface. - * - * The kernel interface uses refcounting, see add_ip(). - * - * @param virtual_ip virtual ip address to assign - * @return SUCCESS if operation completed - */ - status_t (*del_ip) (kernel_net_t *this, host_t *virtual_ip); - - /** - * Add a route. - * - * @param dst_net destination net - * @param prefixlen destination net prefix length - * @param gateway gateway for this route - * @param src_ip sourc ip of the route - * @param if_name name of the interface the route is bound to - * @return SUCCESS if operation completed - * ALREADY_DONE if the route already exists - */ - status_t (*add_route) (kernel_net_t *this, chunk_t dst_net, - u_int8_t prefixlen, host_t *gateway, host_t *src_ip, - char *if_name); - - /** - * Delete a route. - * - * @param dst_net destination net - * @param prefixlen destination net prefix length - * @param gateway gateway for this route - * @param src_ip sourc ip of the route - * @param if_name name of the interface the route is bound to - * @return SUCCESS if operation completed - */ - status_t (*del_route) (kernel_net_t *this, chunk_t dst_net, - u_int8_t prefixlen, host_t *gateway, host_t *src_ip, - char *if_name); - - /** - * Destroy the implementation. - */ - void (*destroy) (kernel_net_t *this); -}; - -#endif /** KERNEL_NET_H_ @}*/ |