udp: add protocol method declarations to udp_var.h
They are shared between UDP over IPv4 and over IPv6. To prevent all
possible kernel build failures wrap them in #ifdef _SYS_PROTOSW_H_.
Prompted by feedback from jhb@ and jrtc27@ on c93db4abf454.
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glebius Authored on Dec 7 2022, 7:51 PM - Parents
- rG5bfc014f2345: udp6: inline udp6_output() into udp6_send()
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