src/sys/dev/netmap/netmap_kern.h, branch stable/10

sync the code with the version in head. which the exception of

2015-02-14T19:41:26+00:00

svn 275358 (M_FLOWID deprecation, only a couple of lines)
which cannot be merged.

if_lem_netmap.h, if_re_netmap.h:
- use the same (commented out) function to update the stat counters
  as in HEAD. This is a no-op here

netmap.c
- merge 274459 (support for private knote lock)
  and minor changes on nm_config and comments

netmap_freebsd.c
- merge 274459 (support for private knote lock)
- merge 274354 (initialize color if passed as argument)

netmap_generic.c
- fix a comment

netmap_kern.h
- revise the lock macros, using sx locks;
  merge 274459 (private knote lock)

netmap_monitor.c
- use full memory barriers

netmap_pipe.c
- use full memory barriers, use length from the correct queue
  (mostly cosmetic, since the queues typically have the same size)

MFC r270253:

2014-08-21T19:58:46+00:00

Change netmap's global lock to sx instead of a mutex.

MFC 270063: update of netmap code

2014-08-20T23:34:36+00:00

(vtnet and cxgbe not merged yet because we need some other mfc first)

sync netmap code with the version in HEAD:

2014-06-09T15:24:45+00:00

- fix handling of tx mbufs in emulated netmap mode;
- introduce mbq_lock() and mbq_unlock()
- rate limit some error messages
- many whitespace and comment fixes

MFH: sync the netmap code with the one in HEAD

2014-02-18T05:01:04+00:00

(enhanced VALE switch, netmap pipes, emulated netmap mode).
See details in the log for svn 261909.

Bring in a number of new features, mostly implemented by Michio Honda:

2013-05-30T14:07:14+00:00

- the VALE switch now support up to 254 destinations per switch,
  unicast or broadcast (multicast goes to all ports).

- we can attach hw interfaces and the host stack to a VALE switch,
  which means we will be able to use it more or less as a native bridge
  (minor tweaks still necessary).
  A 'vale-ctl' program is supplied in tools/tools/netmap
  to attach/detach ports the switch, and list current configuration.

- the lookup function in the VALE switch can be reassigned to
  something else, similar to the pf hooks. This will enable
  attaching the firewall, or other processing functions (e.g. in-kernel
  openvswitch) directly on the netmap port.

The internal API used by device drivers does not change.

Userspace applications should be recompiled because we
bump NETMAP_API as we now use some fields in the struct nmreq
that were previously ignored -- otherwise, data structures
are the same.

Manpages will be committed separately.

Partial cleanup in preparation for upcoming changes:

2013-04-30T16:08:34+00:00

- netmap_rx_irq()/netmap_tx_irq() can now be called by FreeBSD drivers
  hiding the logic for handling NIC interrupts in netmap mode.
  This also simplifies the case of NICs attached to VALE switches.
     Individual drivers will be updated with separate commits.

- use the same refcount() API for FreeBSD and linux

- plus some comments, typos and formatting fixes

Portions contributed by Michio Honda

whitespace changes:

2013-04-29T18:00:53+00:00

remove $Id$ lines, and add blank lines around some #if / #elif /#endif

mostly whitespace changes:

2013-04-19T21:08:21+00:00

- remove vestiges of the old memory allocator
- clean up some comments

control some debugging messages with dev.netmap.verbose

2013-01-23T03:51:47+00:00

add infrastracture to adapt to changes in number of queues
and buffers at runtime