Robert Watson 43bbb6aa10 Further cleanup of UDPv4:
- Move udp_sendspace and udp_recvspace global variables and associated
  sysctls to the top of the file where most other such things are present.

- Rename static variable 'blackhole' to 'udp_blackhole' and unstaticize
  so that we can add blackhole support for UDPv6 using the same MIB
  variable.

- Move udp_append() above udp_input() to match the function order in
  udp6_usrreq.c.

Approved by:	re (kensmith)
2007-07-10 09:30:46 +00:00
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