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Author SHA1 Message Date
Yu Watanabe 8b1cfab962 network: do not restart DHCPv6 client when it is already running in managed mode 
Otherwise, if a network has two router and one provides M flag and the
other provides O flag, then the DHCPv6 client switches the running mode
repeatedly. That makes the IPv6 network configuration of the host
unstable.
 2022-02-14 15:02:33 +09:00
Yu Watanabe dd73db7850 sd-dhcp6-client: reset Information Refresh Time on stop 2022-02-14 15:02:30 +09:00
Yu Watanabe e1774086a7 sd-dhcp6-client: add log about Information Refresh Time 
And store IRT only when the client is running in information
requesting mode.
 2022-02-14 15:01:02 +09:00
Yu Watanabe 9c9fee8002 sd-dhcp6-client: use memcmp_nn() at one more place 2022-02-14 15:01:02 +09:00
Yu Watanabe ac680f766d dhcp-identifier: generate static and constant DUID-EN when the client is running in test mode 
Follow-up for 9216fddc5a.
 2022-02-14 15:00:59 +09:00
Yu Watanabe 5e1618fafa dhcp-identifier: introduce dhcp_identifier_set_duid() 2022-02-14 14:58:49 +09:00
Yu Watanabe f9971018eb dhcp-identifier: introduce duid_type_to_string() 2022-02-14 14:58:49 +09:00
Yu Watanabe 6f3fc86131 sd-dhcp6-client: do not expose set_transaction_id() 
This is mostly for tests or fuzzers. Hence, this makes the function
requires that the client is running in the test mode.

Also, now the function mask the value for message type.
 2022-02-14 14:58:49 +09:00
Yu Watanabe 9e4dee4cec sd-dhcp6-client: use OrderedSet for vendor option 
This also fixes memleak.
 2022-02-14 14:58:49 +09:00
Yu Watanabe 885ea2ab1c ordered-set: introduce ordered_set_clear() 2022-02-14 14:58:49 +09:00
Yu Watanabe 1978efb9a5 sd-dhcp6-client: use struct hw_addr_data 2022-02-14 14:58:49 +09:00
Yu Watanabe 6f8ff34218 sd-dhcp6-client: stop IO event source when client entered bound state 
Also when the client receives a reply when running in information
requesting mode.
 2022-02-14 14:58:49 +09:00
Yu Watanabe 6f4490bb0c sd-dhcp6-client: adjust assertions 2022-02-14 14:58:46 +09:00
Yu Watanabe 65b85f2340 sd-dhcp6-client: log state transition 2022-02-14 14:57:35 +09:00
Yu Watanabe e5d69be216 sd-dhcp6-client: rename client_set_state() -> client_start_transaction() 
Previously, it obeys state transition, but now it is only used when
(re-)starting transaction. Let's rename again in more explanative name.
 2022-02-14 14:57:35 +09:00
Yu Watanabe fa78d165bb sd-dhcp6-client: use proper type for string table lookup funcs 2022-02-14 14:57:35 +09:00
Yu Watanabe a8d1012f30 sd-dhcp6-client: voidify client_set_state() 2022-02-14 14:57:34 +09:00
Yu Watanabe cfcc85bbca sd-dhcp6-client: log message is processed before state is changed 2022-02-14 14:57:34 +09:00
Yu Watanabe c50c9e509f sd-dhcp6-client: move client_timeout_resend() and client_set_state() 
These are deeply related to client_message_send(). Hence, move them near
the function.
 2022-02-14 14:57:34 +09:00
Yu Watanabe 0eca25ba00 sd-dhcp6-client: move client_ensure_iaid() 
No functional change.
 2022-02-14 14:57:34 +09:00
Yu Watanabe af2b484141 sd-dhcp6-client: merge client_start() and client_reset() 2022-02-14 14:56:54 +09:00
Yu Watanabe ec7baf998d sd-dhcp6-client: use event_reset_time_relative() at one more place 2022-02-14 14:54:08 +09:00
Yu Watanabe 22ad018b5e sd-dhcp6-client: max_retransmit_count is only used when client is in DHCP6_STATE_REQUEST 2022-02-14 14:54:08 +09:00
Yu Watanabe 0f3b8b809c sd-dhcp6-client: drop unnecessary event_source_disable() 
The event source will be soon re-enabled in the same function.

The function client_timeout_resend() may return earlier without
re-enabling the timer souce. However,
- the timer event source is one shot by default. Hence, it is not
  necessary to disable in the callback function,
- when it returns early, then client_set_state() or client_stop() is
  called before return, and they re-ernable or disable the timer.
 2022-02-14 14:51:19 +09:00
Yu Watanabe 3bb18e707c sd-dhcp6-client: set lease expiration timer in client_enter_bound_state() 
The timer must be active until the client get re-enter bound state,
and the timeout must be determined by the lease acquired when entering
the bound state.
 2022-02-14 14:45:14 +09:00
Yu Watanabe 30b31359b0 sd-dhcp6-client: drop unnecessary assignment 2022-02-14 14:45:14 +09:00
Yu Watanabe 8ef959cd09 sd-dhcp6-client: initialize IO event source in sd_dhcp6_client_start() 2022-02-14 14:45:14 +09:00
Yu Watanabe f814cd80de sd-dhcp6-client: make state transition stricter 2022-02-14 14:45:14 +09:00
Yu Watanabe c2c878d806 sd-dhcp6-client: prohibit spurious state transition 
Previously, `client_set_state(client, DHCP6_STATE_STOPPED)` might make
the client enter the SOLICIT state.
 2022-02-14 14:45:14 +09:00
Yu Watanabe 220a88ca75 sd-dhcp6-client: disable T1 timer on T2 
Otherwise, the client may be enter RENEW state after REBIND state.
 2022-02-14 14:45:14 +09:00
Yu Watanabe c41bdb17fc sd-dhcp6-client: call client_notify() in client_enter_bound_state() 2022-02-14 14:45:14 +09:00
Yu Watanabe cdf3d8c584 sd-dhcp6-client: fix lifetime handling 
This fixes the following issues:
- if T1 is finite and T2 is infinite, then the timer for T1 was not
  enabled,
- after T1 and T2 are randomized, T1 may be longer than T2.
 2022-02-14 14:45:07 +09:00
Yu Watanabe 1d6cb4ce2a sd-dhcp6-client: use event_reset_time_relative() 2022-02-14 14:43:45 +09:00
Yu Watanabe 02354ee738 sd-dhcp6-client: introduce client_enter_bound_state() 
To make client_set_state() smaller. This should not change any behavior.
 2022-02-14 14:43:45 +09:00
Yu Watanabe cc5184823f sd-dhcp6-client: fix overflow in calculating timeout value 2022-02-14 14:43:45 +09:00
Yu Watanabe d0875a07dd sd-dhcp6-client: disable event source when client is stopped or freed 2022-02-14 14:43:45 +09:00
Yu Watanabe 7771233127 sd-dhcp6-client: use in6_addr_to_string() 2022-02-14 14:43:45 +09:00
Yu Watanabe 4db6334c9a sd-dhcp6-client: stop client on error in client state transition 2022-02-14 14:43:45 +09:00
Yu Watanabe bfa1139af4 sd-dhcp6-client: add missing one more error handling 2022-02-14 14:43:45 +09:00
Yu Watanabe 06d5e856f8 sd-dhcp6-client: rename client_start() -> client_set_state() 2022-02-14 14:43:45 +09:00
Yu Watanabe 07a3b3408b sd-dhcp6-client: introduce client_process_*() 
This is mostly for shortening `client_receive_message()`.

This also fixes the following:
- do not trigger SD_DHCP6_CLIENT_EVENT_INFORMATION_REQUEST notification
  when non-reply message,
- add several missing error handlings caused in client_start().
 2022-02-14 14:43:45 +09:00
Yu Watanabe 0123b2dbac sd-dhcp6-client: fix possible unaligned read or write 2022-02-14 14:43:45 +09:00
Yu Watanabe 16347c15d8 sd-dhcp6-client: voidify client_reset() 2022-02-14 14:43:45 +09:00
Yu Watanabe 65ece4c85b sd-dhcp6-client: introduce dhcp6_lease_new_from_message() 2022-02-14 14:43:45 +09:00
Yu Watanabe c930925841 sd-dhcp6-client: use structured initializer 2022-02-14 14:43:45 +09:00
Yu Watanabe f4fbea7a0f sd-dhcp6-lease: unify lease lifetime calculation 2022-02-14 14:43:45 +09:00
Yu Watanabe 126277aceb sd-dhcp6-client: always use ENODATA when a lease does not have requested data 2022-02-14 14:43:45 +09:00
Yu Watanabe 29858a0f9e sd-dhcp6-client: unify dhcp6_option_append_{ia,pd}() 2022-02-14 14:43:45 +09:00
Yu Watanabe 877bfc78fd sd-dhcp6-client: store PD prefix hint in ia_pd 
And allows to specify multiple hints.
 2022-02-14 14:43:45 +09:00
Yu Watanabe e5b0b87f51 sd-dhcp6-client: introduce dhcp6_ia_free() 2022-02-14 14:43:45 +09:00