Skip to content

Q
qemu

openeuler / qemu

通知 10
Star 0
Fork 0
Q
qemu

体验新版 GitCode，发现更多精彩内容 >>

切换分支/标签
  1. 09 6月, 2009 6 次提交
    • M
      net: add qemu_send_packet_async() · f3b6c7fc
      由 Mark McLoughlin 提交于 
      Add a qemu_send_packet() variant which will queue up the packet
if it cannot be sent when all client queues are full. It later
invokes the supplied callback when the packet has been sent.

If qemu_send_packet_async() returns zero, the caller is expected
to not send any more packets until the queued packet has been
sent.

Packets are queued iff a receive() handler returns zero (indicating
queue full) and the caller has provided a sent notification callback
(indicating it will stop and start its own queue).

We need the packet sending API to support queueing because:

  - a sending client should process all available packets in one go
    (e.g. virtio-net emptying its tx ring)

  - a receiving client may not be able to handle the packet
    (e.g. -EAGAIN from write() to tapfd)

  - the sending client could detect this condition in advance
    (e.g. by select() for writable on tapfd)

  - that's too much overhead (e.g. a select() call per packet)

  - therefore the sending client must handle the condition by
    dropping the packet or queueing it

  - dropping packets is poor form; we should queue.

However, we don't want queueing to be completely transparent. We
want the sending client to stop sending packets as soon as a
packet is queued. This allows the sending client to be throttled
by the receiver.
Signed-off-by: NMark McLoughlin <markmc@redhat.com>
      f3b6c7fc
    • M
      net: add return value to packet receive handler · 4f1c942b
      由 Mark McLoughlin 提交于 
      This allows us to handle queue full conditions rather than dropping
the packet on the floor.
Signed-off-by: NMark McLoughlin <markmc@redhat.com>
      4f1c942b
    • M
      net: pass VLANClientState* as first arg to receive handlers · e3f5ec2b
      由 Mark McLoughlin 提交于 
      Give static type checking a chance to catch errors.
Signed-off-by: NMark McLoughlin <markmc@redhat.com>
      e3f5ec2b
    • M
      net: re-name vc->fd_read() to vc->receive() · cda9046b
      由 Mark McLoughlin 提交于 
      VLANClientState's fd_read() handler doesn't read from file
descriptors, it adds a buffer to the client's receive queue.

Re-name the handlers to make things a little less confusing.
Signed-off-by: NMark McLoughlin <markmc@redhat.com>
      cda9046b
    • M
      net: add fd_readv() handler to qemu_new_vlan_client() args · 463af534
      由 Mark McLoughlin 提交于 
      This, apparently, is the style we prefer - all VLANClientState
should be an argument to qemu_new_vlan_client().
Signed-off-by: NMark McLoughlin <markmc@redhat.com>
      463af534
    • J
      net: Improve parameter error reporting · 10ae5a7a
      由 Jan Kiszka 提交于 
      As host network devices can also be instantiated via the monitor, errors
should then be reported to the related monitor instead of stderr. This
requires larger refactoring, so this patch starts small with introducing
a helper to catch both cases and convert net_client_init as well as
net_slirp_redir.
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: NMark McLoughlin <markmc@redhat.com>
      10ae5a7a
  3. 27 5月, 2009 1 次提交
  5. 15 5月, 2009 1 次提交
  7. 22 4月, 2009 2 次提交
  9. 18 4月, 2009 1 次提交
  11. 06 3月, 2009 1 次提交
    • A
      monitor: Rework API (Jan Kiszka) · 376253ec
      由 aliguori 提交于 
      Refactor the monitor API and prepare it for decoupled terminals:
term_print functions are renamed to monitor_* and all monitor services
gain a new parameter (mon) that will once refer to the monitor instance
the output is supposed to appear on. However, the argument remains
unused for now. All monitor command callbacks are also extended by a mon
parameter so that command handlers are able to pass an appropriate
reference to monitor output services.

For the case that monitor outputs so far happen without clearly
identifiable context, the global variable cur_mon is introduced that
shall once provide a pointer either to the current active monitor (while
processing commands) or to the default one. On the mid or long term,
those use case will be obsoleted so that this variable can be removed
again.

Due to the broad usage of the monitor interface, this patch mostly deals
with converting users of the monitor API. A few of them are already
extended to pass 'mon' from the command handler further down to internal
functions that invoke monitor_printf.

At this chance, monitor-related prototypes are moved from console.h to
a new monitor.h. The same is done for the readline API.
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6711 c046a42c-6fe2-441c-8c8c-71466251a162
      376253ec
  13. 11 2月, 2009 4 次提交
  15. 14 1月, 2009 1 次提交
  17. 09 1月, 2009 2 次提交
  19. 08 1月, 2009 4 次提交
  21. 19 12月, 2008 1 次提交
  23. 18 12月, 2008 1 次提交
  25. 01 11月, 2008 1 次提交
  27. 29 9月, 2008 1 次提交
  29. 30 7月, 2008 1 次提交
  31. 18 7月, 2008 1 次提交
  33. 18 11月, 2007 1 次提交