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11 Commits

Author SHA1 Message Date
Nicholas J. Kain
f3766990f9 Speed up interface carrier checking. 
This is done by performing one synchronous query for carrier state at
the start of the program; after that, we just monitor the nlsocket for
carrier state changes and update the cached state accordingly.

The benefit is that ifchd needs to do a lot less work and this should
reduce the CPU cycle consumption; prior to this commit, the CPU time
ends up being a few CPU-minutes per month.
 2021-04-25 05:55:01 -04:00
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
c47630ffca Rename check_carrier() to carrier_isup() and use bool return. 2017-01-12 05:25:15 -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
170f87c0e7 Propagate returns through ifchange_(deconfig|bind). 
While doing so remove unnecessary argument null checks and
make sure not to alter the stored interface state if the
ifch requests failed.
 2015-02-14 19:10:23 -05:00
Nicholas J. Kain
702d8b0c5b Mark pointer arguments that cannot ever be null as [static 1]. 
Also constify some cases, too.
 2015-02-13 23:14:08 -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
c58a071f52 Update copyright dates. 2015-02-13 01:54:57 -05:00
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