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Systemd/src/systemd/sd-ndisc.h

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sd-icmp6-nd: Add Router Solicitation and Advertisement support Provide functions to bind the ICMPv6 socket to the approriate interface and set multicast sending and receiving according to RFC 3493, section 5.2. and RFC 3542, sections 3. and 3.3. Filter out all ICMPv6 messages except Router Advertisements for the socket in question according to RFC 3542, section 3.2. Send Router Solicitations to the all routers multicast group as described in RFC 4861, section 6. and act on the received Router Advertisments according to section 6.3.7. Implement a similar API for ICMPv6 handling as is done for DHCPv4 and DHCPv6.
2014-06-19 14:38:55 +02:00
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
sd-icmp6-nd: rename files to sd-ndisc The actual code rename will follow. The reason for the change of name is to make it simpler and more uniform with how we name other libraries (we don't include the underlying protocol). The new name also matches the naming in the kernel (which is particularly relevent here as we expect to let the kernel do some parts of the protocol and we do others).
2015-10-15 19:25:31 +02:00
#ifndef foosdndiscfoo
#define foosdndiscfoo
sd-icmp6-nd: Add Router Solicitation and Advertisement support Provide functions to bind the ICMPv6 socket to the approriate interface and set multicast sending and receiving according to RFC 3493, section 5.2. and RFC 3542, sections 3. and 3.3. Filter out all ICMPv6 messages except Router Advertisements for the socket in question according to RFC 3542, section 3.2. Send Router Solicitations to the all routers multicast group as described in RFC 4861, section 6. and act on the received Router Advertisments according to section 6.3.7. Implement a similar API for ICMPv6 handling as is done for DHCPv4 and DHCPv6.
2014-06-19 14:38:55 +02:00
/***
This file is part of systemd.
Copyright (C) 2014 Intel Corporation. All rights reserved.
systemd 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.
systemd 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 systemd; If not, see <http://www.gnu.org/licenses/>.
***/
sd-*.h: clean up exported (or to-be-exported) header files Exported header files should not include internal headers. Fix that. Exported header files should not use the bool type. So far we opted to stick to C89 for exported headers, and hence use "int" for bools in them. Continue to do so. Exported header files should have #include lines for everything they use including inttypes.h and sys/types.h, so that they may be included in any order. Exported header files should have C++ guards, hence add them. Exported header files should not use gcc extensions like #pragma once, get rid of it.
2015-10-24 23:42:56 +02:00
#include <inttypes.h>
sd-icmp6-nd: Add Router Solicitation and Advertisement support Provide functions to bind the ICMPv6 socket to the approriate interface and set multicast sending and receiving according to RFC 3493, section 5.2. and RFC 3542, sections 3. and 3.3. Filter out all ICMPv6 messages except Router Advertisements for the socket in question according to RFC 3542, section 3.2. Send Router Solicitations to the all routers multicast group as described in RFC 4861, section 6. and act on the received Router Advertisments according to section 6.3.7. Implement a similar API for ICMPv6 handling as is done for DHCPv4 and DHCPv6.
2014-06-19 14:38:55 +02:00
#include <net/ethernet.h>
#include "sd-event.h"
sd-*.h: clean up exported (or to-be-exported) header files Exported header files should not include internal headers. Fix that. Exported header files should not use the bool type. So far we opted to stick to C89 for exported headers, and hence use "int" for bools in them. Continue to do so. Exported header files should have #include lines for everything they use including inttypes.h and sys/types.h, so that they may be included in any order. Exported header files should have C++ guards, hence add them. Exported header files should not use gcc extensions like #pragma once, get rid of it.
2015-10-24 23:42:56 +02:00
#include "_sd-common.h"
_SD_BEGIN_DECLARATIONS;
sd-icmp6-nd: Add Router Solicitation and Advertisement support Provide functions to bind the ICMPv6 socket to the approriate interface and set multicast sending and receiving according to RFC 3493, section 5.2. and RFC 3542, sections 3. and 3.3. Filter out all ICMPv6 messages except Router Advertisements for the socket in question according to RFC 3542, section 3.2. Send Router Solicitations to the all routers multicast group as described in RFC 4861, section 6. and act on the received Router Advertisments according to section 6.3.7. Implement a similar API for ICMPv6 handling as is done for DHCPv4 and DHCPv6.
2014-06-19 14:38:55 +02:00
enum {
sd-ndisc: introduce separate callbacks As the data passed is very different, we introduce four different callbacks: - Generic - router discovery timed out or state machine stopped - Router - router and link configuration received - Prefix onlink - configuration for an onlink prefix received - Prefix autonomous - configuration for to configure a SLAAC address for a prefix received
2015-10-19 22:15:50 +02:00
SD_NDISC_EVENT_STOP = 0,
SD_NDISC_EVENT_TIMEOUT = 1,
sd-icmp6-nd: Add Router Solicitation and Advertisement support Provide functions to bind the ICMPv6 socket to the approriate interface and set multicast sending and receiving according to RFC 3493, section 5.2. and RFC 3542, sections 3. and 3.3. Filter out all ICMPv6 messages except Router Advertisements for the socket in question according to RFC 3542, section 3.2. Send Router Solicitations to the all routers multicast group as described in RFC 4861, section 6. and act on the received Router Advertisments according to section 6.3.7. Implement a similar API for ICMPv6 handling as is done for DHCPv4 and DHCPv6.
2014-06-19 14:38:55 +02:00
};
sd-ndisc: rename API from sd-icmp6-nd
2015-10-16 17:07:47 +02:00
typedef struct sd_ndisc sd_ndisc;
sd-icmp6-nd: Add Router Solicitation and Advertisement support Provide functions to bind the ICMPv6 socket to the approriate interface and set multicast sending and receiving according to RFC 3493, section 5.2. and RFC 3542, sections 3. and 3.3. Filter out all ICMPv6 messages except Router Advertisements for the socket in question according to RFC 3542, section 3.2. Send Router Solicitations to the all routers multicast group as described in RFC 4861, section 6. and act on the received Router Advertisments according to section 6.3.7. Implement a similar API for ICMPv6 handling as is done for DHCPv4 and DHCPv6.
2014-06-19 14:38:55 +02:00
sd-ndisc: introduce separate callbacks As the data passed is very different, we introduce four different callbacks: - Generic - router discovery timed out or state machine stopped - Router - router and link configuration received - Prefix onlink - configuration for an onlink prefix received - Prefix autonomous - configuration for to configure a SLAAC address for a prefix received
2015-10-19 22:15:50 +02:00
typedef void(*sd_ndisc_router_callback_t)(sd_ndisc *nd, uint8_t flags, const struct in6_addr *gateway, unsigned lifetime, int pref, void *userdata);
typedef void(*sd_ndisc_prefix_onlink_callback_t)(sd_ndisc *nd, const struct in6_addr *prefix, unsigned prefixlen,
unsigned lifetime, void *userdata);
typedef void(*sd_ndisc_prefix_autonomous_callback_t)(sd_ndisc *nd, const struct in6_addr *prefix, unsigned prefixlen,
unsigned lifetime_prefered, unsigned lifetime_valid, void *userdata);
typedef void(*sd_ndisc_callback_t)(sd_ndisc *nd, int event, void *userdata);
int sd_ndisc_set_callback(sd_ndisc *nd,
sd_ndisc_router_callback_t rcb,
sd_ndisc_prefix_onlink_callback_t plcb,
sd_ndisc_prefix_autonomous_callback_t pacb,
sd_ndisc_callback_t cb,
void *userdata);
sd-ndisc: rename API from sd-icmp6-nd
2015-10-16 17:07:47 +02:00
int sd_ndisc_set_index(sd_ndisc *nd, int interface_index);
int sd_ndisc_set_mac(sd_ndisc *nd, const struct ether_addr *mac_addr);
sd-icmp6-nd: Add Router Solicitation and Advertisement support Provide functions to bind the ICMPv6 socket to the approriate interface and set multicast sending and receiving according to RFC 3493, section 5.2. and RFC 3542, sections 3. and 3.3. Filter out all ICMPv6 messages except Router Advertisements for the socket in question according to RFC 3542, section 3.2. Send Router Solicitations to the all routers multicast group as described in RFC 4861, section 6. and act on the received Router Advertisments according to section 6.3.7. Implement a similar API for ICMPv6 handling as is done for DHCPv4 and DHCPv6.
2014-06-19 14:38:55 +02:00
sd-ndisc: rename API from sd-icmp6-nd
2015-10-16 17:07:47 +02:00
int sd_ndisc_attach_event(sd_ndisc *nd, sd_event *event, int priority);
int sd_ndisc_detach_event(sd_ndisc *nd);
sd_event *sd_ndisc_get_event(sd_ndisc *nd);
sd-icmp6-nd: Add Router Solicitation and Advertisement support Provide functions to bind the ICMPv6 socket to the approriate interface and set multicast sending and receiving according to RFC 3493, section 5.2. and RFC 3542, sections 3. and 3.3. Filter out all ICMPv6 messages except Router Advertisements for the socket in question according to RFC 3542, section 3.2. Send Router Solicitations to the all routers multicast group as described in RFC 4861, section 6. and act on the received Router Advertisments according to section 6.3.7. Implement a similar API for ICMPv6 handling as is done for DHCPv4 and DHCPv6.
2014-06-19 14:38:55 +02:00
sd-ndisc: rename API from sd-icmp6-nd
2015-10-16 17:07:47 +02:00
sd_ndisc *sd_ndisc_ref(sd_ndisc *nd);
sd_ndisc *sd_ndisc_unref(sd_ndisc *nd);
int sd_ndisc_new(sd_ndisc **ret);
sd-icmp6-nd: Add Router Solicitation and Advertisement support Provide functions to bind the ICMPv6 socket to the approriate interface and set multicast sending and receiving according to RFC 3493, section 5.2. and RFC 3542, sections 3. and 3.3. Filter out all ICMPv6 messages except Router Advertisements for the socket in question according to RFC 3542, section 3.2. Send Router Solicitations to the all routers multicast group as described in RFC 4861, section 6. and act on the received Router Advertisments according to section 6.3.7. Implement a similar API for ICMPv6 handling as is done for DHCPv4 and DHCPv6.
2014-06-19 14:38:55 +02:00
sd-ndisc: rename API from sd-icmp6-nd
2015-10-16 17:07:47 +02:00
int sd_ndisc_get_mtu(sd_ndisc *nd, uint32_t *mtu);
sd-icmp6-nd: Add helper function to get the IPv6 link MTU Update MTU according to the latest value received.
2015-01-20 18:35:59 +01:00
sd-ndisc: rename API from sd-icmp6-nd
2015-10-16 17:07:47 +02:00
int sd_ndisc_stop(sd_ndisc *nd);
int sd_ndisc_router_discovery_start(sd_ndisc *nd);
sd-icmp6-nd: Add Router Solicitation and Advertisement support Provide functions to bind the ICMPv6 socket to the approriate interface and set multicast sending and receiving according to RFC 3493, section 5.2. and RFC 3542, sections 3. and 3.3. Filter out all ICMPv6 messages except Router Advertisements for the socket in question according to RFC 3542, section 3.2. Send Router Solicitations to the all routers multicast group as described in RFC 4861, section 6. and act on the received Router Advertisments according to section 6.3.7. Implement a similar API for ICMPv6 handling as is done for DHCPv4 and DHCPv6.
2014-06-19 14:38:55 +02:00
sd-ndisc: rename API from sd-icmp6-nd
2015-10-16 17:07:47 +02:00
#define SD_NDISC_ADDRESS_FORMAT_STR "%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x"
sd-icmp6-nd: Parse ICMPv6 prefix information Save each new onlink IPv6 prefix and attach an expiry timer to it. If the prefixes overlap, take the shorter prefix and write a debug message about the event. Once the prefix is resent in a Router Advertisement, update the timer. Add a new event for the expiring prefix. Add two helper functions, one for returning a prefix length given a Router Advertisement and the other for generic prefix matching given an IPv6 prefix and address.
2015-01-20 18:36:01 +01:00
sd-ndisc: rename API from sd-icmp6-nd
2015-10-16 17:07:47 +02:00
#define SD_NDISC_ADDRESS_FORMAT_VAL(address) \
sd-icmp6-nd: Parse ICMPv6 prefix information Save each new onlink IPv6 prefix and attach an expiry timer to it. If the prefixes overlap, take the shorter prefix and write a debug message about the event. Once the prefix is resent in a Router Advertisement, update the timer. Add a new event for the expiring prefix. Add two helper functions, one for returning a prefix length given a Router Advertisement and the other for generic prefix matching given an IPv6 prefix and address.
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be16toh((address).s6_addr16[0]), \
be16toh((address).s6_addr16[1]), \
be16toh((address).s6_addr16[2]), \
be16toh((address).s6_addr16[3]), \
be16toh((address).s6_addr16[4]), \
be16toh((address).s6_addr16[5]), \
be16toh((address).s6_addr16[6]), \
be16toh((address).s6_addr16[7])
sd-*.h: clean up exported (or to-be-exported) header files Exported header files should not include internal headers. Fix that. Exported header files should not use the bool type. So far we opted to stick to C89 for exported headers, and hence use "int" for bools in them. Continue to do so. Exported header files should have #include lines for everything they use including inttypes.h and sys/types.h, so that they may be included in any order. Exported header files should have C++ guards, hence add them. Exported header files should not use gcc extensions like #pragma once, get rid of it.
2015-10-24 23:42:56 +02:00
_SD_END_DECLARATIONS;
sd-icmp6-nd: Add Router Solicitation and Advertisement support Provide functions to bind the ICMPv6 socket to the approriate interface and set multicast sending and receiving according to RFC 3493, section 5.2. and RFC 3542, sections 3. and 3.3. Filter out all ICMPv6 messages except Router Advertisements for the socket in question according to RFC 3542, section 3.2. Send Router Solicitations to the all routers multicast group as described in RFC 4861, section 6. and act on the received Router Advertisments according to section 6.3.7. Implement a similar API for ICMPv6 handling as is done for DHCPv4 and DHCPv6.
2014-06-19 14:38:55 +02:00
#endif
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