Commit Graph

12 Commits

Author SHA1 Message Date
Bryan Venteicher
9945063d70 Don't check the dma map address for a static DMA mapping against NULL
to determine if the mapping is valid.

Submitted by:	jhb
2014-06-14 23:36:17 +00:00
Bryan Venteicher
e41318fc7b Fix TSO support on VMware Fusion
Apparently for VMware Fusion (and presumably VMware Workstation/Player
since the PR states TSO is broken there too, but I cannot test), the
TCP header pseudo checksum calculated should only include the protocol
(IPPROTO_TCP) value, not also the lengths as the stack does instead.

VMware ESXi seems to ignore whatever value is in the TCP header checksum,
and it is a bit surprising there is a different behavior between the
VMware products. And it is unfortunate that on ESXi we are forced to do
this extra bit of work.

PR:		kern/185849
MFC after:	3 days
2014-06-09 02:45:53 +00:00
Bryan Venteicher
75f4c88677 Remove an unnecessary variable reassignment
And it would be bad if 'm' was different from '*m0' at this
point, since we've already populated the SG list.

MFC after:	3 days
2014-06-09 02:39:05 +00:00
Luigi Rizzo
c7156fe92f make sure if_transmit returns 0 if the mbuf is enqueued.
ixgbe/ixv.c still needs a similar fix but it takes a little
more restructuring of the code.

MFC after:	3 days
2014-06-06 20:49:56 +00:00
Bryan Venteicher
e557c1dd90 Add Tx/Rx multiqueue support to vmx(4)
As a prerequisite for multiple queues, the guest must have MSIX enabled.
Unfortunately, to work around device passthrough bugs, FreeBSD disables
MSIX when running as a VMWare guest due to the hw.pci.honor_msi_blacklist
tunable; this tunable must be disabled for multiple queues.

Also included is various minor changes from the projects/vmxnet branch.

MFC after:	1 month
2014-03-17 05:45:29 +00:00
Gleb Smirnoff
b245f96c44 Since 32-bit if_baudrate isn't enough to describe a baud rate of a 10 Gbit
interface, in the r241616 a crutch was provided. It didn't work well, and
finally we decided that it is time to break ABI and simply make if_baudrate
a 64-bit value. Meanwhile, the entire struct if_data was reviewed.

o Remove the if_baudrate_pf crutch.

o Make all fields of struct if_data fixed machine independent size. The
  notion of data (packet counters, etc) are by no means MD. And it is a
  bug that on amd64 we've got a 64-bit counters, while on i386 32-bit,
  which at modern speeds overflow within a second.

  This also removes quite a lot of COMPAT_FREEBSD32 code.

o Give 16 bit for the ifi_datalen field. This field was provided to
  make future changes to if_data less ABI breaking. Unfortunately the
  8 bit size of it had effectively limited sizeof if_data to 256 bytes.

o Give 32 bits to ifi_mtu and ifi_metric.
o Give 64 bits to the rest of fields, since they are counters.

__FreeBSD_version bumped.

Discussed with:	emax
Sponsored by:	Netflix
Sponsored by:	Nginx, Inc.
2014-03-13 03:42:24 +00:00
Gleb Smirnoff
c3322cb91c Include necessary headers that now are available due to pollution
via if_var.h.

Sponsored by:	Netflix
Sponsored by:	Nginx, Inc.
2013-10-28 07:29:16 +00:00
Gleb Smirnoff
76039bc84f The r48589 promised to remove implicit inclusion of if_var.h soon. Prepare
to this event, adding if_var.h to files that do need it. Also, include
all includes that now are included due to implicit pollution via if_var.h

Sponsored by:	Netflix
Sponsored by:	Nginx, Inc.
2013-10-26 17:58:36 +00:00
Bryan Venteicher
ce3be286f0 Do not provide a hint of the guest's OS version
The calculation can overflow if __FreeBSD_version is big
enough, and it does not appear to be required.

Reported by:	grehan
Approved by:	re (gjb)
2013-10-11 06:48:40 +00:00
Bryan Venteicher
3c5dfe892d Few more minor if_vmx tweaks
- Allow the Rx/Tx queue sizes to be configured by tunables
 - Bail out earlier if the Tx queue unlikely has enough free
   descriptors to hold the frame
 - Cleanup some of the offloading capabilities handling
2013-08-30 05:53:00 +00:00
Bryan Venteicher
3c9657753e Couple minor if_vmx tweaks
- Use queue size fields from the Tx/Rx queues in various places
    instead of (currently the same values) from the softc.
  - Fix potential crash in detach if the attached failed to alloc
    queue memory.
  - Move the VMXNET3_MAX_RX_SEGS define to a better spot.
  - Tweak frame size calculation w.r.t. ETHER_ALIGN. This could be
    tweaked some more, or removed since it probably doesn't matter
    much for x86 (and the x86 class of machines this driver will
    be used on).
2013-08-27 04:05:18 +00:00
Bryan Venteicher
e3c97c2cc2 Add vmx(4), a VMware VMXNET3 ethernet driver ported from OpenBSD 2013-08-23 20:47:16 +00:00