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* aspath_test.c: match changes in aspath_unintern. Fix printf size_t warning.
* bgp_capability_test.c: compile warnings.
* bgp_mp_attr_test.c: update for attr parser context struct
* ecommunity_test.c: ecommunity_free/ecommunity
* test-checksum.c: some unused vars and funcs without need of prototypes.
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Add 2 impl. of the Internet Checksum. One new optimized nad
one form RFC 1071. Turns out that the current Quagga in_cksum()
is buggy. On Big Endian routers it miscalculates odd sized buffers.
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* lib/checksum.c: (fletcher_checksum) Switch the second phase of the checksum
back to the old ospfd logic.
The isisd-derived version:
a) is very hard to follow
b) had some kind of subtle bug that caused it be wrong when c0=0 and c1=254
(potentially fixable by doing the mods before adjusting x and y)
Additionally:
- explicitely cast expressions using non-internal variables to int, to ensure
the result is signed.
- defensively change the length argument to 'size_t', to ensure the code
works with that argument being unsigned..
Thanks to Joakim Tjernlund for the investigative work into this bug.
* tests/test-checksum.c: new file to exercise the checksum code.
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