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11 Commits

Author SHA1 Message Date
Nicholas J. Kain
05a075aeb2 Replace '(c)' with 'Copyright'. 
'(c)' may not be a valid substitute for 'Copyright' in some legal
domains/interpretations.  So be safe, since I obviously am asserting
copyright on my legal work.
 2018-10-26 07:11:16 -04:00
Nicholas J. Kain
8983df3c86 Update copyright dates. 2018-02-18 08:25:10 -05:00
Nicholas J. Kain
b8ee0bd5c2 Update copyright dates to 2017. 2017-01-13 20:15:27 -05:00
Nicholas J. Kain
b3bd13d45f Fix the return values of dhcp_packet_get and arp_packet_get. 
This corrects a bug where stale dhcp packets would get reprocessed,
causing very bad behavior; an issue that was introduced in the
coroutine conversion.
 2015-02-18 11:02:13 -05:00
Nicholas J. Kain
61387408d0 Separate event state gathering from action dispatch in main epoll loop. 
This is the first step towards using coroutines.
 2015-02-15 06:38:03 -05:00
Nicholas J. Kain
e874373dcd Check link carrier via ifch and netlink instead of ioctl. 
Thus, ioctl can once again be removed from the ndhc seccomp whitelist.
 2015-02-15 02:50:29 -05:00
Nicholas J. Kain
cc806acc0b Indicate that client_state_t and client_config_t pointer args 
cannot ever be null.

Could possibly improve code generation, and makes the intention clear.
 2015-02-13 22:29:03 -05:00
Nicholas J. Kain
b4b6ed8fd5 Check for carrier before sendto() or write() on interface fd. 
Linux will quietly proceed as if the data were sent even if the carrier
is down and nothing actually happened.  There is still a tiny race
condition where the carrier could drop between the check and the actual
write, but we really can't do anything about that and it is a very
small race.
 2015-02-13 21:53:15 -05:00
Nicholas J. Kain
c58a071f52 Update copyright dates. 2015-02-13 01:54:57 -05:00
Nicholas J. Kain
07cbd88049 Just use raw sockets for listening to DHCP requests. A UDP SO_BROADCAST 
socket was previously used only for receiving RENEWING packets, and it
added needless complexity and was somewhat fragile.
 2014-04-16 01:00:36 -04:00
Nicholas J. Kain
b761889025 Move source from ndhc/ to src/ since ifchd is no longer a separate program. 2014-04-06 16:57:06 -04:00