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path: root/src/libsystemd-network/sd-dhcp6-client.c
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2014-07-24libsystemd-network: use CLOCK_BOOTTIME instead of CLOCK_MONOTONIC where possibleTom Gundersen
The timeouts in the networking library (DHCP lease timeouts and similar) should not be affected by suspend. In the cases where CLOCK_BOOTTIME is not implemented, it is still safe to fallback to CLOCK_MONOTONIC, as the consumers of the library (i.e., networkd) _should_ renew the leases when coming out of suspend.
2014-07-23dhcp-network: remove unused DHCP6_STATE_RSDan Williams
Probably a left-over from when router solicitations were requested in the DHCP6 code. But since they are now separate, this state is no longer needed.
2014-07-14sd-dhcp6-client: make gcc happyTom Gundersen
It complains about {max,init}_retransmit_time possibly being uninitialized. It is wrong, but let's just initialize it.
2014-07-04networkd: don't clear dhcpv6 lease timers if there's no previous leaseSteven Noonan
If client->lease is NULL, dhcp6_lease_clear_timers will cause a segmentation fault.
2014-07-02sd-dhcp6-client: initialize variableTom Gundersen
2014-07-01sd-dhcp6-client: check return valueThomas Hindoe Paaboel Andersen
Checking the return values seems to have been forgotten in ed6ee21953dac9c78383da00bc4514ece6b75ab5
2014-07-01sd-dhcp6-client: fix free before useTom Gundersen
2014-06-26sd-dhcp6-client: Implement Rapid CommitPatrik Flykt
Add a Rapid Commit option to Solicit messages and expect a Reply to be received instead of an Advertise. When receiving a DHCPv6 message from the server in state Solicit, continue testing whether the message is a Reply. Ease up the message type checking, it's not fatal if the message is of a wrong type. Add helper functions to set/get the rapid commit of a lease. See RFC 3315, sections 17., 17.1.2., 17.1.4. and 18.1.8.
2014-06-26sd-dhcp6-client: Implement Renew and RebindPatrik Flykt
Start sending Renew and Rebind DHCPv6 messages when respective timers T1 and T2 expire. Rebind messages do not include a Server ID option and the Rebind procedure ends when the last IPv6 address valid lifetime expires, whereafter the client restarts the address acquisition procedure by Soliciting for available servers. See RFC 3315, sections 18.1.3. and 18.1.4. for details.
2014-06-26sd-dhcp6-client: Add Option Request Option supportPatrik Flykt
Provide a function to request more options from the DHCPv6 server. Provide a sensible default set at startup and add test basic test cases for the intended usage. Define DNS and NTP related option codes and add comments for the unassigned codes.
2014-06-26sd-dhcp6-client: return NULL from _unref() like the other sd-* librariesPatrik Flykt
In order to keep the refcounting working, a DONT_DESTROY macro similar to the one in sd-bus has been added also to DHCPv6.
2014-06-24sd-dhcp6-client: use %m instead of strerror(errno)Ronny Chevalier
2014-06-20sd-dhcp6-client: fix uninitialized variablesRonny Chevalier
2014-06-19sd-dhcp6-client: Initialize fd to -1 and rename functionZbigniew Jędrzejewski-Szmek
client_initialize name is misleading, since the function is actually useful at the *end*, to reinitialize the object. But reset is shorter, so rename it to client_reset.
2014-06-19sd-dhcp6-client: Receive and parse a reply and set T1 and T2 timersPatrik Flykt
Receive and parse a Reply from the server. Set up T1 and T2 timers and notify the library user of an acquired DHCPv6 lease.
2014-06-19sd-dhcp6-client: Add Request message sendingPatrik Flykt
As described in RFC 3315, Section 17.1.2, a client has to wait until the first timeout has elapsed before it is allowed to request IPv6 addresses from the DHCPv6 server. This is indicated by a non-NULL lease and a non-zero resend count. Should the Advertisement contain a preference value of 255 or be received after the first timeout, IPv6 address requesting is started immediately. In response to these events, create a Request message and set up proper resend timers to send the message to the server.
2014-06-19sd-dhcp6-client: Update start function to take a statePatrik Flykt
Update the start function so that the client state can be conveniently changed with the previous message resend timers cleared. On initial startup also create and bind to the UDP socket.
2014-06-19sd-dhcp6-lease: Add functions for accessing lease and addressesPatrik Flykt
Add support functions for accessing the current client lease as well as iterating over the addresses and get their preferred and valid lifetimes.
2014-06-19sd-dhcp6-client: Receive and parse Advertise messagesPatrik Flykt
When receiving DHCPv6 messages, discard the ones that are not meant for DHCPv6 clients and verify the transaction id. Once that is done, process the Advertise message and select the Advertise with the highest preference. Create a separate function for lease information parsing so that it can be reused in other parts of the protocol. Verify both DUID and IAID in the received message and store other necessary information with the lease structure.
2014-06-19sd-dhcp6-client: Add DHCPv6 Solicit message creation and sendingPatrik Flykt
Implement the initial functionality used for creating a DHCPv6 Solicit message containing the needed options and send it to the DHCPv6 broadcast address. Increase the sent message count and ensure that the Solicit Initial Retransmission Time is strictly greater than the Solicitation IRT as described in RFC 3315, section 17.1.2.
2014-06-19sd-dhcp6-client: Add DHCPv6 client Solicitation timeout handlingPatrik Flykt
Add the core of DHCPv6 client message retransmission and upper bound timer and message count handling according to RFC 3315 Secions 7.1.2 and 14. Omit the DHCPv6 initial delay; for now it is assumed that systemd-networkd will provide decent startup randomization that will desynchronize the clients. When reinitializing the client, clear all timers.
2014-06-19sd-dhcp6-client: Add DHCPv6 IAID functionalityPatrik Flykt
Create structures describing Identity Association IDentifiers and IPv6 lease addresses. [tomegun: initialize the IAID when client is started. Base this off of the predictable udev names, if available, as these satisfy the requirement of the IAID, and base it off the mac addres otherwise, as that is the best we have.]
2014-06-19sd-dhcp6-client: Initialize DUIDTom Gundersen
Initialize DHCP Unique Identifier when creating the client. The DUID is generated based on the machine-id, which satisfies all the requirements of what an DUID should be. The DUID type is DUID-EN. Based on patch by Patrik Flykt.
2014-06-19sd-dhcp6-client: Add initial DHCPv6 client filesPatrik Flykt
Add initial structure definition and functions for setting index, MAC address, callback and event loop. Define protocol values and states.