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2017-12-06dhcpv4: notify DHCP ACK and RELEASE via ubusHans Dedecker
If the ubus object has any subscription notify DHCP ACK and DHCP RELEASE events using ubus notifications. Signed-off-by: Borja Salazar <borja.salazar@fon.com> Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-11-25dhcpv6: fix compile issues when CER-ID extension is enabledHans Dedecker
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-11-21ndp: add switch/case fallthrough commentsHans Dedecker
Fixes gcc 7 build errors Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-11-09dhcpv4: make DHCPv4 support compiletime configurableHans Dedecker
Make DHCPv4 support compile time configurable; avoids DHCPv4 functionality overlap with other packages. Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-11-09treewide: rework handling of netlink eventsHans Dedecker
Rework the handling of netlink events by letting the different modules ndp, ra, dhcpv6 and dhcpv4 install netevent handlers. The installed netevent handlers are called by the netlink logic passing an event indication together with event data. Each netevent handler implements its own event logic; this makes the code more modular and less complex by moving all netlink code to netlink.c While at it rename ia_addr and ia_addr_len into addr6 and addr6_len respectively Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-10-16treewide: add netlink fileHans Dedecker
First step in moving netlink code to netlink.c by moving netlink code from odhcpd.c to netlink.c Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-10-13treewide: align function namingHans Dedecker
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-09-13dhcpv4: fix memset compile issueHans Dedecker
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-09-13dhcpv4: rework assignment lookupHans Dedecker
When receiving a DHCPv4 message use find_assignment_by_hwaddr to find an assignment as only one entry can be present in the assignment table for a given mac address. While at it pass requested address by the client as an uint32_t type to clean up the code. Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-09-13dhcpv4: cleanup dhcpv4_test usageHans Dedecker
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-09-13dhcpv4: rework lease expire handling logicHans Dedecker
Don't rely on incoming DHCPv4 messages to trigger the lease expire detection logic but rather use a periodic timer which checks every second if a lease is expired Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-09-13dhcpv4: force renew nonce authentication supportHans Dedecker
Support force renew nonce authentication support in the DHCPv4 server as described in RFC3203 and RFC6704. The interface uci arameter dhcpv4_forcereconf allows to supports DHCPv4 clients which support force renew without authentication. While at it align network byte order logic for simplicity. Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-09-13dhcpv4: avoid segfault when there's no IPv4 prefixHans Dedecker
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-09-13ndp: detect ifindex changes via interface netlink eventsHans Dedecker
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-09-11ubus: display accept reconf status for DHCPv6 assignmentsHans Dedecker
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-09-06treewide: replace RELAYD prefix naming in macrosHans Dedecker
Remove the unfortunate RELAYD naming in the different macros Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-08-17dhcpv4: fix possible segfault when lease is not createdHans Dedecker
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-08-17dhcpv4: dhcpv4: move interface lease list insertion out of dhcpv4_assignHans Dedecker
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-08-16ndp: use IPv4 address list when comparing IPv4 addressesHans Dedecker
Use IPv4 address list in check_addr_updates which fixes possible segfault as IPv6 address list was used by mistake. Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-08-10dhcpv6-ia: rework reconfigure accept logicHans Dedecker
Rework reconfigure accept retransmission logic; every DHCPv6 assignment has its own reconfigure accept timer now making sure the timeout and retransmission behavior is in line with RFC3315 paragraph 19.1.2. While at it rename the original reconf_timer into valid_until_timeout as it will only check now the lifetime of the assignments. Set reconf_cnt to INT_MAX for every assignment which belongs to the same client identifier; before the reconf_cnt of the first handled assignment was set by mistake breaking the retransmission logic. Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-08-07treewide: rework IPv4 address logicHans Dedecker
Align IPv4 address logic with IPv6 by caching per interface the assigned IPv4 addresses. This allows to get rid of different ioctl calls in the DHCPv4 logic to retrieve the IPv4 address and netmask in use by an interface. Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-08-03dhcpv6: assign all viable DHCPv6 addresses by default (FS#402, FS#524)Hans Dedecker
Some client implementations expect DHCPv6 addresses to be assigned for every prefix present in a RA as reported in FS#524; if not done the client implementations spam the DHCPv6 server with SOLICIT messages trying to get an DHCPv6 address for every prefix. When ra_managed is set to 1 and an ULA prefix is configured; the DHCPv6 server will only assign an ULA DHCPv6 addresses which possibly leads to DNS issues. Fix these problems by providing dhcpv6_assignall config option which assigns all viable DHCPv6 addresses to a client by default. This is a trade off as it means client implementations will be assigned more IPv6 addresses and lose the ability to quickly renumber clients which don't support reconfigure accept in case of wan prefix change Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-08-02treewide: reflect managed mode is related to RAHans Dedecker
Improve code readability by renaming managed into ra_managed and define the according ra_managed flags. This will help to better understand the ra_managed logic as defined in the README file. Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-07-04ndp: optimize check_addr6_updates codeHans Dedecker
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-07-04ndp: fix syslog tracing for netlink neigbor and address eventsHans Dedecker
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-07-03treewide: rework logic to retrieve IPv6 interface addressesHans Dedecker
Retrieve IPv6 interface addresses when the interface gets created; this allows to get rid of the IPv6 address dump logic in ndp.c. Add IPv4 address support in odhcp_ipaddr struct. Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-06-29router: use enum to specify order and index of iov structHans Dedecker
Improve code maintainability by using enum to order and index iov struct Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-06-29treewide: rework code to get rid of fixed IPv6 address arraysHans Dedecker
Rework code to get rid of RELAYD_MAX_PREFIXES and RELAYD_MAX_ADDRS by using dynamic IPv6 address array allocation. Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-06-27config: rework code to get rid of IFNAMSIZ usageHans Dedecker
Get rid of IFNAMSIZE usage for interface name and ifname variables Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-06-27treewide: use angle-brackets to include libubox header filesHans Dedecker
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-05-15config: fix invalid hoplimit in RA messageHans Dedecker
Don't send an invalid hoplimit in RA message when the interface is shutdown due to a invalid configured ra_hoplimit. Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-05-15config: fix invalid retranstime in RA messageHans Dedecker
Don't send an invalid retranstime in RA message when the interface is shutdown due to a invalid configured ra_retranstime. Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-05-15config: fix invalid reachabletime in RA messageHans Dedecker
Don't send an invalid reachabletime in RA message when the interface is shutdown due to a invalid configured ra_reachabletime. Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-05-15config: limit ra_mtu to 65535Hans Dedecker
Limit the maximum ra_mtu to 65535 Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-05-15router: fix interface mtu read errorHans Dedecker
Use integer type for mtu variable as odhcpd_get_interface_config returns -1 when it fails to read the interface mtu. This allows to set the mtu to a meaningfull value of 1280 in case of interface mtu read failure. Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-05-15config: limit ra_retranstime to 60000Hans Dedecker
Limit the maximum ra_retranstime value to 60000 milliseconds as described in RFC7048. Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-05-12dhcpv4: display two hex digits per octet in syslogLeon M. George
Signed-off-by: Leon M. George <leon@georgemail.eu>
2017-05-12config: make RA retransTime configurable via uciHans Dedecker
Allow to specify the router advertisement retrans time via the uci parameter ra_retranstime. If retransmit time is not configured the value is set to 0 in RA message meaning undefined.
2017-05-11config: make RA reachableTime configurable via uciHans Dedecker
Allow to specify the router advertisement reachable time via the uci parameter ra_reachabletime. If reachable time is not configured the value is set to 0 in RA message meaning undefined. Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-05-11config: make RA curHopLimit configurable via uciHans Dedecker
Allow to specify the router advertisement current hop limit via the uci parameter ra_hoplimit. If hoplimit is not configured the hoplimit is taken from the interface as before. Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-05-11config: make RA mtu configurable via UCIHans Dedecker
Allow to specify the router advertisement mtu via the uci parameter ra_mtu. In case the config parameter is not set the MTU is taken from the interface as before. Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-05-11config: fix dhcpv4 server being startedHans Dedecker
In case maindhcp is set to disabled in global config one expect the DHCPv4 server not being started irrespective if the dhcpv4 interface config is set to server. Fix this by keeping maindhcp config apart from the legacy config parameter as already documented in the README. Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-05-04ndp.c: add switch/case fallthrough commentsFelix Fietkau
Fixes gcc 7 build errors Signed-off-by: Felix Fietkau <nbd@nbd.name>
2017-04-28ndp: don't trigger IPv6 ping when neighbor entry is invalidHans Dedecker
A ping for an IPv6 address not present on an interface will generate a netlink neighbor message with as status fail; launching again an IPv6 ping on other proxy enabled interfaces will create a cascade effect of netlink neighbor messages with as status fail which in its turn will again trigger an IPv6 ping on proxy enabled interfaces ... Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-04-28ndp: fix adding proxy neighbor entriesHans Dedecker
Proxy neighbor entries were not created for proxy enabled interfaces if the first interface was not enabled Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-04-27ndp: fix wrong interface name in syslog messageHans Dedecker
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-04-26dhcpv6-ia: Fix segfault when writing DHCPv4 leases in state fileHans Dedecker
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-04-25ubus: don't segfault when there're no leasesHans Dedecker
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-04-21ubus: rework dumping IPv6 and IPv4 leasesHans Dedecker
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
2017-04-21dhcpv6-ia: simplify logic to write statefile and dhcpv6 loggingHans Dedecker
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
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