kernel/netmap: Move headers into <net/netmap/...>.

Note that netmap isn't hooked into the build right now, and because of
that, this commit results in removing them from their current location.

Som

kernel/netmap: Move headers into <net/netmap/...>.

Note that netmap isn't hooked into the build right now, and because of
that, this commit results in removing them from their current location.

Some dports like net/libpcap started breaking after 2c68437386f4be2ed45a4
because configure found a building netmap_user.h and decided that we have
a current and usable netmap.

Reported-by: zrj

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netmap: reduce upstream diff output; bring back __FBSDIDs

netmap: change header includes

Suggested-by: sephe

FWIW, kqfilter() port is not really going well as poll() is doing
a bunch of loosely related drive-by actions that somehow form the
API. The best

netmap: change header includes

Suggested-by: sephe

FWIW, kqfilter() port is not really going well as poll() is doing
a bunch of loosely related drive-by actions that somehow form the
API. The best approach would be to thin out the implementation to
at least get the bare core functionality working. That'll also
include writing new userland glue. Feels more like a fork than a
port that way. :(

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netmap: more porting; undo some mistakes

Probably adds new issues, too. There's some VM magic,
cdev_t adaption and a couple of network internals left.

netmap: lock(9), k*() foo, no ifdefs

The ifdef glue is a bit hard to see through. Remove it now to
bring it back later with appropriate ifdefs for DragonFly.

netmap: initial import of netmap core

Vanilla sources; not hooked up to the build.

Taken-from: https://code.google.com/p/netmap/ (3b385fe7854d)