272461 |
03-Oct-2014 |
gjb |
Copy stable/10@r272459 to releng/10.1 as part of the 10.1-RELEASE process.
Approved by: re (implicit) Sponsored by: The FreeBSD Foundation
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270509 |
24-Aug-2014 |
bryanv |
MFC r270063 (vtnet)
The vtnet changes were not originally merged in r270252 since r268480 and r268481 had not been MFC'ed.
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270334 |
22-Aug-2014 |
bryanv |
MFC r268481:
Rework when the Tx queue completion interrupt is enabled
The Tx interrupt is now kept disabled in the common case, only enabled when the number of free descriptors in the queue falls below a threshold. Transmitted frames are cleared from the VQ before subsequent transmit, or in the watchdog timer.
This was a very big performance improvement for an experimental Netmap bhyve backend.
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268010 |
29-Jun-2014 |
bryanv |
MFC r267520, r267521, r267522, r267523, r267524:
- Remove two write-only local variables - Remove unused element in the vtnet_rxq structure - Remove kernel specific macro out of the VirtIO PCI header file - Move the VIRTIO_RING_F_* defines out of virtqueue.h into virtio_config.h - Make the feature negotiation code easier to follow - Force two byte alignment for all control message headers
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267279 |
09-Jun-2014 |
luigi |
MFC svn 267065 and 267187
make sure ifp->if_transmit returns 0 if a buffer is enqueued. This should also be merged to stable/9.
After this fix, drivers still known to have this bug are igxbe/ixv and i40e.
Drivers using if_transmit are correct, and so are most of the other drivers that reassing if_transmit.
Among other things, this bug causes panics when using netmap emulation on top of generic drivers.
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265286 |
03-May-2014 |
bryanv |
MFC r261150, r261151, r261164, r261166, r261167, r261168, r261394, r261395:
- Read and write the MAC address in the config space byte by byte - Also include the mbuf's csum_flags in an assert message - Remove stray space - Move duplicated transmit start code into a single function - Avoid queue unlock followed by relock when the enable interrupt race is lost - Check for a full virtqueue in the multiqueue transmit path - Do not place the sglist used for Rx/Tx on the stack - Use m_defrag() instead of m_collapse() to compact a long mbuf chain
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256281 |
10-Oct-2013 |
gjb |
Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.
Approved by: re (implicit) Sponsored by: The FreeBSD Foundation
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256066 |
05-Oct-2013 |
bryanv |
Do not hold the vtnet Rx queue lock when calling up into the stack
This matches other similar drivers and avoids various LOR warnings.
Approved by: re (marius)
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255167 |
03-Sep-2013 |
bryanv |
Complete any pending Tx frames before attempting the next transmit
Also complete pending frames in the watchdog function when the EVENT_IDX feature was negotiated just in case the completion interrupt was postponed.
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255131 |
01-Sep-2013 |
eadler |
Fix build with gcc
Reported by: Michael Butler <imb@protected-networks.net> Reviewed by: jilles
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255112 |
01-Sep-2013 |
bryanv |
Import multiqueue VirtIO net driver from my user/bryanv/vtnetmq branch
This is a significant rewrite of much of the previous driver; lots of misc. cleanup was also performed, and support for a few other minor features was also added.
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255111 |
01-Sep-2013 |
bryanv |
Sync VirtIO net device header file from recent Linux
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252707 |
04-Jul-2013 |
bryanv |
Merge virtio changes from projects/virtio
Contains projects/virtio commits:
r245738: virtio: Minor man page tweaks r246060: virtio: Cleanup feature description printing r246306: virtio: Remove old debugging flag r247238: virtio: Remove PRIx64 macros from format strings r247239: virtio: Constify some fields r247240: virtio: Minor code simplifications r249962: virtio: Update to my freebsd.org email address
MFC after: 1 month
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252706 |
04-Jul-2013 |
bryanv |
Merge vtnet changes from projects/virtio
Minor changes to the network driver. A multiqueue driver that is a significant rewrite will be in merged shortly.
Contains projects/virtio commits:
r246058: vtnet: Move an mbuf ASSERT to the calling function r246059: vtnet: Tweak ASSERT message
MFC after: 1 month
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252702 |
04-Jul-2013 |
bryanv |
Convert VirtIO to use ithreads instead of taskqueues
Contains projects/virtio commits:
r245709: Each VirtIO device was scheduling its own taskqueue(9) to do the off-level interrupt handling. ithreads(9) is the more nature way to do this. The primary motivation for this work to better support network multiqueue. r245710: virtio: Change virtqueue intr handlers to return void r245711: virtio_blk: Remove interrupt taskqueue r245721: vtnet: Remove interrupt taskqueue r245722: virtio_scsi: Remove interrupt taskqueue r245747: vtnet: Remove taskqueue fields missed in r245721
MFC after: 1 month
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251769 |
15-Jun-2013 |
bryanv |
Merge r250802 from bryanv/vtnetmq - Fix setting of the Rx filters
QEMU 1.4 made the descriptor requirement stricter - the size of buffer descriptor must exactly match the number of MAC addresses provided.
PR: kern/178955 MFC after: 5 days
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244200 |
14-Dec-2012 |
bryanv |
virtio: Start taskqueues threads after attach cannot fail
If virtio_setup_intr() failed during boot, we would hang in taskqueue_free() -> taskqueue_terminate() for all the taskq threads to terminate. This will never happen since the scheduler is not running by this point.
Reported by: neel, grehan Approved by: grehan (mentor)
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243857 |
04-Dec-2012 |
glebius |
Mechanically substitute flags from historic mbuf allocator with malloc(9) flags in sys/dev.
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238360 |
11-Jul-2012 |
grehan |
Various VirtIO improvements
PCI: - Properly handle interrupt fallback from MSIX to MSI to legacy. The host may not have sufficient resources to support MSIX, so we must be able to fallback to legacy interrupts. - Add interface to get the (sub) vendor and device IDs. - Rename flags to VTPCI_FLAG_* like other VirtIO drivers. Block: - No longer allocate vtblk_requests from separate UMA zone. malloc(9) from M_DEVBUF is sufficient. Assert segment counts at allocation. - More verbose error and debug messages. Network: - Remove stray write once variable. Virtqueue: - Shuffle code around in preparation of converting the mb()s to the appropriate atomic(9) operations. - Only walk the descriptor chain when freeing if INVARIANTS is defined since the result is only KASSERT()ed.
Submitted by: Bryan Venteicher (bryanv@daemoninthecloset.org)
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238072 |
03-Jul-2012 |
obrien |
Do not include <sys/types.h> in the local headers. The .c files including them have already included <sys/param.h> before these headers are included.
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234270 |
14-Apr-2012 |
grehan |
Catch up with Bryan Venteicher's virtio git repo:
a8af6270bd96be6ccd86f70b60fa6512b710e4f0 virtio_blk: Include function name in panic string
cbdb03a694b76c5253d7ae3a59b9995b9afbb67a virtio_balloon: Do the notify outside of the lock
By the time we return from virtqueue_notify(), the descriptor will be in the used ring so we shouldn't have to sleep.
10ba392e60692529a5cbc1e9987e4064e0128447 virtio: Use DEVMETHOD_END
80cbcc4d6552cac758be67f0c99c36f23ce62110 virtqueue: Add support for VIRTIO_F_RING_EVENT_IDX
This can be used to reduce the number of guest/host and host/guest interrupts by delaying the interrupt until a certain index value is reached.
Actual use by the network driver will come along later.
8fc465969acc0c58477153e4c3530390db436c02 virtqueue: Simplify virtqueue_nused()
Since the values just wrap naturally at UINT16_MAX, we can just subtract the two values directly, rather than doing 2's complement math.
a8aa22f25959e2767d006cd621b69050e7ffb0ae virtio_blk: Remove debugging crud from 75dd732a
There seems to be an issue with Qemu (or FreeBSD VirtIO) that sets the PCI register space for the device config to bogus values. This only seems to happen after unloading and reloading the module.
d404800661cb2a9769c033f8a50b2133934501aa virtio_blk: Use better variable name
75dd732a97743d96e7c63f7ced3c2169696dadd3 virtio_blk: Partially revert 92ba40e65
Just use the virtqueue to determine if any requests are still inflight.
06661ed66b7a9efaea240f99f414c368f1bbcdc7 virtio_blk: error if allowed too few segments
Should never happen unless the host provides use with a bogus seg_max value.
4b33e5085bc87a818433d7e664a0a2c8f56a1a89 virtio_blk: Sort function declarations
426b9f5cac892c9c64cc7631966461514f7e08c6 virtio_blk: Cleanup whitespace
617c23e12c61e3c2233d942db713c6b8ff0bd112 virtio_blk: Call disk_err() on error'd completed requests
081a5712d4b2e0abf273be4d26affcf3870263a9 virtio_blk: ASSERT the ready and inflight request queues are empty
a9be2631a4f770a84145c18ee03a3f103bed4ca8 virtio_blk: Simplify check for too many segments
At the cost of a small style violation.
e00ec09da014f2e60cc75542d0ab78898672d521 virtio_blk: Add beginnings of suspend/resume
Still not sure if we need to virtio_stop()/virtio_reinit() the device before/after a suspend.
Don't start additional IO when marked as suspending.
47c71dc6ce8c238aa59ce8afd4bda5aa294bc884 virtio_blk: Panic when dealt an unhandled BIO cmd
1055544f90fb8c0cc6a2395f5b6104039606aafe virtio_blk: Add VQ enqueue/dequeue wrappers
Wrapper functions managed the added/removing to the in-flight list of requests.
Normally biodone() any completed IO when draining the virtqueue.
92ba40e65b3bb5e4acb9300ece711f1ea8f3f7f4 virtio_blk: Add in-flight list of requests
74f6d260e075443544522c0833dc2712dd93f49b virtio_blk: Rename VTBLK_FLAG_DETACHING to VTBLK_FLAG_DETACH
7aa549050f6fc6551c09c6362ed6b2a0728956ef virtio_blk: Finish all BIOs through vtblk_finish_bio()
Also properly set bio_resid in the case of errors. Most geom_disk providers seem to do the same.
9eef6d0e6f7e5dd362f71ba097f2e2e4c3744882 Added function to translate VirtIO status to error code
ef06adc337f31e1129d6d5f26de6d8d1be27bcd2 Reset dumping flag when given unexpected parameters
393b3e390c644193a2e392220dcc6a6c50b212d9 Added missing VTBLK_LOCK() in dump handler
Obtained from: Bryan Venteicher bryanv at daemoninthecloset dot org
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228301 |
06-Dec-2011 |
grehan |
Catch up with Bryan Venteicher's virtio Hg repo:
c162516 Remove vtblk_sector_size
c162515 Wrap long license lines
c162514 Remove vtblk_unit
c162513 Wrap long lines in the license.
c162512 Remove verbose messages when link goes up/down.
A similar message is printed elsewhere as a result of if_link_state_change().
c162511 Explicity compare pointer to NULL
c162510 Allocate the mac filter table at attach time.
c162509 Add real BSD licenses to the header files copied from Linux.
The chases upstream changes made in Linux awhile ago.
c162508 Only notify if we actually dequeued something.
c162507 Change a couple of if () { KASSERT(...) } to just KASSERTs.
In non-debug kernels, the if() { } probably get optomized away, but I guess this is clearer.
c162506 Remove VIRTIO_BLK_F_TOPOLOGY fields in the config.
TOPOLOGY has since been removed from the spec, and the FreeBSD didn't really do anything with the fields anyways.
c162505 Move vtblk_enqueue_request() outside the locks when getting the ident.
c162504 Remove soon to be uneeded trylock during dump [1]. http://lists.freebsd.org/pipermail/freebsd-current/2011-November/029226.html
c162503 Remove emtpy line
c162502 Drop frame if cannot allocate a vtnet_tx_header.
If we don't, we set OACTIVE, but if there are no other frames in flight, vtnet_txeof() will never be called to unset OACTIVE. The interface would have to be down/up'ed in order to become usable.
We could be cuter here and only do this if the virtqueue is emtpy, but its probably not worth the complication.
c162501 Start mbuf replacement loop at 1 for clarity
Obtained from: Bryan Venteicher bryanv at daemoninthecloset dot org
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227652 |
18-Nov-2011 |
grehan |
Import virtio base, PCI front-end, and net/block/balloon drivers. Tested on Qemu/KVM, VirtualBox, and BHyVe.
Currently built as modules-only on i386/amd64. Man pages not yet hooked up, pending review.
Submitted by: Bryan Venteicher bryanv at daemoninthecloset dot org Reviewed by: bz MFC after: 4 weeks or so
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