09 Feb, 2013
1 commit
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Pull networking fixes from David Miller:
1) Revert iwlwifi reclaimed packet tracking, it causes problems for a
bunch of folks. From Emmanuel Grumbach.2) Work limiting code in brcmsmac wifi driver can clear tx status
without processing the event. From Arend van Spriel.3) rtlwifi USB driver processes wrong SKB, fix from Larry Finger.
4) l2tp tunnel delete can race with close, fix from Tom Parkin.
5) pktgen_add_device() failures are not checked at all, fix from Cong
Wang.6) Fix unintentional removal of carrier off from tun_detach(),
otherwise we confuse userspace, from Michael S. Tsirkin.7) Don't leak socket reference counts and ubufs in vhost-net driver,
from Jason Wang.8) vmxnet3 driver gets it's initial carrier state wrong, fix from Neil
Horman.9) Protect against USB networking devices which spam the host with 0
length frames, from Bjørn Mork.10) Prevent neighbour overflows in ipv6 for locally destined routes,
from Marcelo Ricardo. This is the best short-term fix for this, a
longer term fix has been implemented in net-next.11) L2TP uses ipv4 datagram routines in it's ipv6 code, whoops. This
mistake is largely because the ipv6 functions don't even have some
kind of prefix in their names to suggest they are ipv6 specific.
From Tom Parkin.12) Check SYN packet drops properly in tcp_rcv_fastopen_synack(), from
Yuchung Cheng.13) Fix races and TX skb freeing bugs in via-rhine's NAPI support, from
Francois Romieu and your's truly.14) Fix infinite loops and divides by zero in TCP congestion window
handling, from Eric Dumazet, Neal Cardwell, and Ilpo Järvinen.15) AF_PACKET tx ring handling can leak kernel memory to userspace, fix
from Phil Sutter.16) Fix error handling in ipv6 GRE tunnel transmit, from Tommi Rantala.
17) Protect XEN netback driver against hostile frontend putting garbage
into the rings, don't leak pages in TX GOP checking, and add proper
resource releasing in error path of xen_netbk_get_requests(). From
Ian Campbell.18) SCTP authentication keys should be cleared out and released with
kzfree(), from Daniel Borkmann.19) L2TP is a bit too clever trying to maintain skb->truesize, and ends
up corrupting socket memory accounting to the point where packet
sending is halted indefinitely. Just remove the adjustments
entirely, they aren't really needed. From Eric Dumazet.20) ATM Iphase driver uses a data type with the same name as the S390
headers, rename to fix the build. From Heiko Carstens.21) Fix a typo in copying the inner network header offset from one SKB
to another, from Pravin B Shelar.* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (56 commits)
net: sctp: sctp_endpoint_free: zero out secret key data
net: sctp: sctp_setsockopt_auth_key: use kzfree instead of kfree
atm/iphase: rename fregt_t -> ffreg_t
net: usb: fix regression from FLAG_NOARP code
l2tp: dont play with skb->truesize
net: sctp: sctp_auth_key_put: use kzfree instead of kfree
netback: correct netbk_tx_err to handle wrap around.
xen/netback: free already allocated memory on failure in xen_netbk_get_requests
xen/netback: don't leak pages on failure in xen_netbk_tx_check_gop.
xen/netback: shutdown the ring if it contains garbage.
net: qmi_wwan: add more Huawei devices, including E320
net: cdc_ncm: add another Huawei vendor specific device
ipv6/ip6_gre: fix error case handling in ip6gre_tunnel_xmit()
tcp: fix for zero packets_in_flight was too broad
brcmsmac: rework of mac80211 .flush() callback operation
ssb: unregister gpios before unloading ssb
bcma: unregister gpios before unloading bcma
rtlwifi: Fix scheduling while atomic bug
net: usbnet: fix tx_dropped statistics
tcp: ipv6: Update MIB counters for drops
...
01 Feb, 2013
1 commit
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It's OK to get kick before backend is set or after
it is cleared, we can just ignore it.Signed-off-by: Michael S. Tsirkin
Signed-off-by: Nicholas Bellinger
30 Jan, 2013
2 commits
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Currently, the polling errors were ignored, which can lead following issues:
- vhost remove itself unconditionally from waitqueue when stopping the poll,
this may crash the kernel since the previous attempt of starting may fail to
add itself to the waitqueue
- userspace may think the backend were successfully set even when the polling
failed.Solve this by:
- check poll->wqh before trying to remove from waitqueue
- report polling errors in vhost_poll_start(), tx_poll_start(), the return value
will be checked and returned when userspace want to set the backendAfter this fix, there still could be a polling failure after backend is set, it
will addressed by the next patch.Signed-off-by: Jason Wang
Acked-by: Michael S. Tsirkin
Signed-off-by: David S. Miller -
Currently, when vhost_init_used() fails the sock refcnt and ubufs were
leaked. Correct this by calling vhost_init_used() before assign ubufs and
restore the oldsock when it fails.Signed-off-by: Jason Wang
Signed-off-by: David S. Miller
16 Dec, 2012
1 commit
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Pull target updates from Nicholas Bellinger:
"It has been a very busy development cycle this time around in target
land, with the highlights including:- Kill struct se_subsystem_dev, in favor of direct se_device usage
(hch)
- Simplify reservations code by combining SPC-3 + SCSI-2 support for
virtual backends only (hch)
- Simplify ALUA code for virtual only backends, and remove left over
abstractions (hch)
- Pass sense_reason_t as return value for I/O submission path (hch)
- Refactor MODE_SENSE emulation to allow for easier addition of new
mode pages. (roland)
- Add emulation of MODE_SELECT (roland)
- Fix bug in handling of ExpStatSN wrap-around (steve)
- Fix bug in TMR ABORT_TASK lookup in qla2xxx target (steve)
- Add WRITE_SAME w/ UNMAP=0 support for IBLOCK backends (nab)
- Convert ib_srpt to use modern target_submit_cmd caller + drop
legacy ioctx->kref usage (nab)
- Convert ib_srpt to use modern target_submit_tmr caller (nab)
- Add link_magic for fabric allow_link destination target_items for
symlinks within target_core_fabric_configfs.c code (nab)
- Allocate pointers in instead of full structs for
config_group->default_groups (sebastian)
- Fix 32-bit highmem breakage for FILEIO (sebastian)All told, hch was able to shave off another ~1K LOC by killing the
se_subsystem_dev abstraction, along with a number of PR + ALUA
simplifications. Also, a nice patch by Roland is the refactoring of
MODE_SENSE handling, along with the addition of initial MODE_SELECT
emulation support for virtual backends.Sebastian found a long-standing issue wrt to allocation of full
config_group instead of pointers for config_group->default_group[]
setup in a number of areas, which ends up saving memory with big
configurations. He also managed to fix another long-standing BUG wrt
to broken 32-bit highmem support within the FILEIO backend driver.Thank you again to everyone who contributed this round!"
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (50 commits)
target/iscsi_target: Add NodeACL tags for initiator group support
target/tcm_fc: fix the lockdep warning due to inconsistent lock state
sbp-target: fix error path in sbp_make_tpg()
sbp-target: use simple assignment in tgt_agent_rw_agent_state()
iscsi-target: use kstrdup() for iscsi_param
target/file: merge fd_do_readv() and fd_do_writev()
target/file: Fix 32-bit highmem breakage for SGL -> iovec mapping
target: Add link_magic for fabric allow_link destination target_items
ib_srpt: Convert TMR path to target_submit_tmr
ib_srpt: Convert I/O path to target_submit_cmd + drop legacy ioctx->kref
target: Make spc_get_write_same_sectors return sector_t
target/configfs: use kmalloc() instead of kzalloc() for default groups
target/configfs: allocate only 6 slots for dev_cg->default_groups
target/configfs: allocate pointers instead of full struct for default_groups
target: update error handling for sbc_setup_write_same()
iscsit: use GFP_ATOMIC under spin lock
iscsi_target: Remove redundant null check before kfree
target/iblock: Forward declare bio helpers
target: Clean up flow in transport_check_aborted_status()
target: Clean up logic in transport_put_cmd()
...
14 Dec, 2012
1 commit
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Pull trivial branch from Jiri Kosina:
"Usual stuff -- comment/printk typo fixes, documentation updates, dead
code elimination."* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (39 commits)
HOWTO: fix double words typo
x86 mtrr: fix comment typo in mtrr_bp_init
propagate name change to comments in kernel source
doc: Update the name of profiling based on sysfs
treewide: Fix typos in various drivers
treewide: Fix typos in various Kconfig
wireless: mwifiex: Fix typo in wireless/mwifiex driver
messages: i2o: Fix typo in messages/i2o
scripts/kernel-doc: check that non-void fcts describe their return value
Kernel-doc: Convention: Use a "Return" section to describe return values
radeon: Fix typo and copy/paste error in comments
doc: Remove unnecessary declarations from Documentation/accounting/getdelays.c
various: Fix spelling of "asynchronous" in comments.
Fix misspellings of "whether" in comments.
eisa: Fix spelling of "asynchronous".
various: Fix spelling of "registered" in comments.
doc: fix quite a few typos within Documentation
target: iscsi: fix comment typos in target/iscsi drivers
treewide: fix typo of "suport" in various comments and Kconfig
treewide: fix typo of "suppport" in various comments
...
06 Dec, 2012
5 commits
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The variable se_sess is initialized but never used
otherwise, so remove the unused variable.dpatch engine is used to auto generate this patch.
(https://github.com/weiyj/dpatch)Signed-off-by: Wei Yongjun
Signed-off-by: Michael S. Tsirkin -
Zero copy TX has been around for a while now.
We seem to be down to eliminating theoretical bugs
and performance tuning at this point:
it's probably time to enable it by default so that
most users get the benefit.Keep the flag around meanwhile so users can experiment
with disabling this if they experience regressions.
I expect that we will remove it in the future.Signed-off-by: Michael S. Tsirkin
-
For short packets zerocopy mode adds overhead
of managing heads which isn't necessary: we
could simly update used ring directly
same as with zerocopy disabled.Things seem to run a bit faster if we detect
and bypass head management when zcopy isn't used.Signed-off-by: Michael S. Tsirkin
-
When memory map changes, we need to flush outstanding
DMAs as they might in theory reference old memory addresses.
To do this simply stop initiating new DMAs
and wait for ubufs ref count to drop to 0.
Afterwards reset the count back to 1.Signed-off-by: Michael S. Tsirkin
-
vring changes already do a flush internally where appropriate, so we do
not need a second flush.It's currently not very expensive but a follow-up patch makes flush more
heavy-weight, so remove the extra flush here to avoid regressing
performance if call or kick fds are changed on data path.Signed-off-by: Michael S. Tsirkin
04 Dec, 2012
1 commit
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These packet counters are used to drive the zercopy
selection heuristic so nothing too bad happens if they are off a bit -
and they are also reset once in a while.
But it's cleaner to clear them when backend is set so that
we start in a known state.Signed-off-by: Michael S. Tsirkin
Signed-off-by: David S. Miller
30 Nov, 2012
1 commit
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Signed-off-by: David S. Miller
29 Nov, 2012
1 commit
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If a single descriptor crosses a region, the
second chunk length should be decremented
by size translated so far, instead it includes
the full descriptor length.Signed-off-by: Michael S. Tsirkin
Acked-by: Jason Wang
Signed-off-by: David S. Miller
20 Nov, 2012
1 commit
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linux/vhost.h was included twice.
Signed-off-by: Sachin Kamat
Acked-by: Michael S. Tsirkin
Signed-off-by: David S. Miller
19 Nov, 2012
1 commit
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Correct spelling typo in multiple drivers.
Signed-off-by: Masanari Iida
Signed-off-by: Jiri Kosina
11 Nov, 2012
1 commit
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Conflicts:
drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.cMinor conflict between the BCM_CNIC define removal in net-next
and a bug fix added to net. Based upon a conflict resolution
patch posted by Stephen Rothwell.Signed-off-by: David S. Miller
07 Nov, 2012
1 commit
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Pass the sense reason as an explicit return value from the I/O submission
path instead of storing it in struct se_cmd and using negative return
values. This cleans up a lot of the code pathes, and with the sparse
annotations for the new sense_reason_t type allows for much better
error checking.(nab: Convert spc_emulate_modesense + spc_emulate_modeselect to use
sense_reason_t with Roland's MODE SELECT changes)Signed-off-by: Christoph Hellwig
Cc: Roland Dreier
Signed-off-by: Nicholas Bellinger
03 Nov, 2012
6 commits
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It seems that to avoid deadlocks it is enough to poll vq before
we are going to use the last buffer. This is faster than
c70aa540c7a9f67add11ad3161096fb95233aa2e.Signed-off-by: Michael S. Tsirkin
Signed-off-by: David S. Miller -
Even when vhost-net is in zero-copy transmit mode,
net core might still decide to copy the skb later
which is somewhat slower than a copy in user
context: data copy overhead is added to the cost of
page pin/unpin. The result is that enabling tx zero copy
option leads to higher CPU utilization for guest to guest
and guest to host traffic.To fix this, suppress zero copy tx after a given number of
packets triggered late data copy. Re-enable periodically
to detect workload changes.Signed-off-by: Michael S. Tsirkin
Signed-off-by: David S. Miller -
Zerocopy handling code is vhost-net specific.
Move it from vhost.c/vhost.h out to net.cSigned-off-by: Michael S. Tsirkin
Signed-off-by: David S. Miller -
This will be used to disable zerocopy when error rate
is high.Signed-off-by: Michael S. Tsirkin
Signed-off-by: David S. Miller -
Better document macros for DMA tracking. Add an
explicit one for DMA in progress instead of
relying on user supplying len != 1.Signed-off-by: Michael S. Tsirkin
Signed-off-by: David S. Miller -
Even if skb is marked for zero copy, net core might still decide
to copy it later which is somewhat slower than a copy in user context:
besides copying the data we need to pin/unpin the pages.Add a parameter reporting such cases through zero copy callback:
if this happens a lot, device can take this into account
and switch to copying in user context.This patch updates all users but ignores the passed value for now:
it will be used by follow-up patches.Signed-off-by: Michael S. Tsirkin
Signed-off-by: David S. Miller
25 Oct, 2012
1 commit
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We copy head count to a 16 bit field, this works by chance on LE but on
BE guest gets 0. Fix it up.Signed-off-by: Michael S. Tsirkin
Tested-by: Alexander Graf
Cc: stable@vger.kernel.org
Signed-off-by: David S. Miller
10 Oct, 2012
1 commit
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Pull scsi target updates from Nicholas Bellinger:
"Things have been calm for the most part with no new fabric drivers in
flight for v3.7 (we're up to eight now !), so this update is primarily
focused on addressing a few long-standing items within target-core and
iscsi-target fabric code.The highlights include:
- target: Simplify fabric sense data length handling (roland)
- qla2xxx: Fix endianness of task management response code (roland)
- target: fix truncation of mode data, support zero allocation length
(paolo)
- target: Properly support zero-length commands in normal processing
path (paolo)
- iscsi-target: Correctly set 0xffffffff field within ISCSI_OP_REJECT
PDU (ronnie + nab)
- iscsi-target: Add explicit set of cache_dynamic_acls=1 for TPG
demo-mode (ronnie + nab)
- target/file: Re-enable optional fd_buffered_io=1 operation (nab +
hch)
- iscsi-target: Add MaxXmitDataSegmenthLength forr target ->
initiator MDRSL declaration (nab)
- target: Add target_submit_cmd_map_sgls for SGL fabric memory
passthrough (nab + hch)
- tcm_loop: Convert I/O path to use target_submit_cmd_map_sgls (hch +
nab)
- tcm_vhost: Convert I/O path to use target_submit_cmd_map_sgls (nab
+ hch)The last series for adding a new target_submit_cmd_map_sgls() fabric
caller (as requested by hch) that accepts pre-allocated SGL memory
(using existing logic), along with converting tcm_loop + tcm_vhost has
only been in -next for the last days, but has gotten enough review
+testing and is clear enough a mechanical change that I think it's
reasonable to merge for -rc1 code.Thanks again to everyone who contributed this round! Extra special
thanks to Roland (PureStorage) for tracking down the qla2xxx target
TMR response code endian issue, and to Paolo (Redhat) for resolving
the long standing zero-length CDB issues within target-core between
virtual and pSCSI backends."* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (44 commits)
iscsi-target: Bump defaults for nopin_timeout + nopin_response_timeout values
iscsit: proper endianess conversions
iscsit: use the itt_t abstract type
iscsit: add missing endianess conversion in iscsit_check_inaddr_any
iscsit: remove incorrect unlock in iscsit_build_sendtargets_resp
iscsit: mark various functions static
target/iscsi: precedence bug in iscsit_set_dataout_sequence_values()
target/usb-gadget: strlen() doesn't count the terminator
target/usb-gadget: remove duplicate initialization
tcm_vhost: Convert I/O path to use target_submit_cmd_map_sgls
target: Add control CDB READ payload zero work-around
tcm_loop: Convert I/O path to use target_submit_cmd_map_sgls
target: Add target_submit_cmd_map_sgls for SGL fabric memory passthrough
iscsi-target: Add explicit set of cache_dynamic_acls=1 for TPG demo-mode
iscsi-target: Change iscsi_target_seq_pdu_list.c to honor MaxXmitDataSegmentLength
iscsi-target: Add MaxXmitDataSegmentLength connection recovery check
iscsi-target: Convert incoming PDU payload checks to MaxXmitDataSegmentLength
iscsi-target: Enable MaxXmitDataSegmentLength operation in login path
iscsi-target: Add base MaxXmitDataSegmentLength code
target/file: Re-enable optional fd_buffered_io=1 operation
...
03 Oct, 2012
1 commit
-
This patch converts tcm_vhost to use target_submit_cmd_map_sgls() for
I/O submission and mapping of pre-allocated SGL memory from incoming
virtio-scsi SGL memory -> se_cmd descriptors.This includes removing the original open-coded fabric uses of target
core callers to support transport_generic_map_mem_to_cmd() between
target_setup_cmd_from_cdb() and transport_handle_cdb_direct() logic.It also includes adding a handful of new tcm_vhost_cmnd member +
assignments in vhost_scsi_allocate_cmd() used from cmwq process
context I/O submission within tcm_vhost_submission_work()(v2: Use renamed target_submit_cmd_map_sgls)
Reported-by: Christoph Hellwig
Cc: Christoph Hellwig
Acked-by: Michael S. Tsirkin
Cc: Paolo Bonzini
Cc: Stefan Hajnoczi
Signed-off-by: Nicholas Bellinger
27 Sep, 2012
1 commit
-
Signed-off-by: Al Viro
18 Sep, 2012
2 commits
-
Every fabric driver has to supply a se_tfo->set_fabric_sense_len()
method, just so iSCSI can return an offset of 2. However, every fabric
driver is already allocating a sense buffer and passing it into the
target core, either via transport_init_se_cmd() or target_submit_cmd().So instead of having iSCSI pass the start of its sense buffer into the
core and then later tell the core to skip the first 2 bytes, it seems
easier for iSCSI just to do the offset of 2 when it passes the sense
buffer into the core. Then we can drop the se_tfo->set_fabric_sense_len()
everywhere, and just add a couple of lines of code to iSCSI to set the
sense data length to the beginning of the buffer right before it sends
it over the network.(nab: Remove .set_fabric_sense_len usage from tcm_qla2xxx_npiv_ops +
change transport_get_sense_buffer to follow v3.6-rc6 code w/o
->set_fabric_sense_len usage)Signed-off-by: Roland Dreier
Signed-off-by: Nicholas Bellinger -
There are no callers of se_tfo->get_fabric_sense_len(), so we should
stop having every fabric driver implement it.Signed-off-by: Roland Dreier
Signed-off-by: Nicholas Bellinger
21 Aug, 2012
1 commit
-
Here TRANSPORT_IQN_LEN is 224, which is a multiple of 4.
Since vhost_tpgt is 2 bytes and abi_version is 4, the total size would
be 230. But gcc needs struct size be aligned to first field size, which
is 4 bytes, so it pads the structure by extra 2 bytes to the total of
232.This padding is very undesirable in an ABI:
- it can not be initialized easily
- it can not be checked easily
- it can leak information between kernel and userspaceSimplest solution is probably just to make the padding
explicit.(v2: Add check for zero'ed backend->reserved field for VHOST_SCSI_SET_ENDPOINT
and VHOST_SCSI_CLEAR_ENDPOINT ops as requested by MST)Reported-by: Michael S. Tsirkin
Signed-off-by: Michael S. Tsirkin
Signed-off-by: Nicholas Bellinger
17 Aug, 2012
3 commits
-
This patch changes the vhost_scsi_target->vhost_wwpn[] type used
by VHOST_SCSI_* ioctls to 'char *' as requested by Blue Swirl in
order to match the latest QEMU vhost-scsi RFC-v3 userspace code.Queuing this up into target-pending/master for a -rc3 PULL.
Reported-by: Blue Swirl
Cc: Michael S. Tsirkin
Cc: Stefan Hajnoczi
Cc: Paolo Bonzini
Signed-off-by: Nicholas Bellinger -
This patch contains the post RFC-v5 (post-merge) changes, this includes:
- Add locking comment
- Move vhost_scsi_complete_cmd ahead of TFO callbacks in order to
drop forward declarations
- Drop extra '!= NULL' usage in vhost_scsi_complete_cmd_work()
- Change vhost_scsi_*_handle_kick() to use pr_debug
- Fix possible race in vhost_scsi_set_endpoint() for vs->vs_tpg checking
+ assignment.
- Convert tv_tpg->tpg_vhost_count + ->tv_tpg_port_count from atomic_t ->
int, and make sure reference is protected by ->tv_tpg_mutex.
- Drop unnecessary vhost_scsi->vhost_ref_cnt
- Add 'err:' label for exception path in vhost_scsi_clear_endpoint()
- Add enum for VQ numbers, add usage in vhost_scsi_open()
- Add vhost_scsi_flush() + vhost_scsi_flush_vq() following
drivers/vhost/net.c
- Add smp_wmb() + vhost_scsi_flush() call during vhost_scsi_set_features()
- Drop unnecessary copy_from_user() usage with GET_ABI_VERSION ioctl
- Add missing vhost_scsi_compat_ioctl() caller for vhost_scsi_fops
- Fix function parameter definition first line to follow existing
vhost code style
- Change 'vHost' usage -> 'vhost' in handful of locations
- Change -EPERM -> -EBUSY usage for two failures in tcm_vhost_drop_nexus()
- Add comment for tcm_vhost_workqueue in tcm_vhost_init()
- Make GET_ABI_VERSION return 'int' + add comment in tcm_vhost.hReported-by: Michael S. Tsirkin
Cc: Michael S. Tsirkin
Cc: Stefan Hajnoczi
Cc: Anthony Liguori
Cc: Zhi Yong Wu
Cc: Paolo Bonzini
Signed-off-by: Nicholas Bellinger -
Fix up a new coccinelle warnings reported by Fengguang Wu + Intel
0-DAY kernel build testing backend:drivers/vhost/tcm_vhost.c:537:23-29: ERROR: allocation function on line
533 returns NULL not ERR_PTR on failurevim +537 drivers/vhost/tcm_vhost.c
534 if (!sg)
535 return -ENOMEM;
536 pr_debug("%s sg %p sgl_count %u is_err %ld\n", __func__,
> 537 sg, sgl_count, IS_ERR(sg));
538 sg_init_table(sg, sgl_count);
539
540 tv_cmd->tvc_sgl = sg;Signed-off-by: Fengguang Wu
Signed-off-by: Nicholas Bellinger
30 Jul, 2012
1 commit
-
This patch adds the initial code for tcm_vhost, a Vhost level TCM
fabric driver for virtio SCSI initiators into KVM guest.This code is currently up and running on v3.5-rc2 host+guest
from target-pending/for-next-merge.Using tcm_vhost requires Zhi's -> Stefan -> nab's qemu vhost-scsi tree here:
http://git.kernel.org/?p=virt/kvm/nab/qemu-kvm.git;a=shortlog;h=refs/heads/vhost-scsi
--
Changelog v4 -> v5:
Expose ABI version via VHOST_SCSI_GET_ABI_VERSION + use Rev 0 as
starting point for v3.6-rc code (Stefan + ALiguori + nab)
Convert vhost_scsi_handle_vq() to vq_err() (nab + MST)
Minor style fixes from checkpatch (nab)Changelog v3 -> v4:
Rename vhost_vring_target -> vhost_scsi_target (mst + nab)
Use TRANSPORT_IQN_LEN in vhost_scsi_target->vhost_wwpn[] def (nab)
Move back to drivers/vhost/, and just use drivers/vhost/Kconfig.tcm (mst)
Move TCM_VHOST related ioctl defines from include/linux/vhost.h ->
drivers/vhost/tcm_vhost.h as requested by MST (nab)
Move Kbuild.tcm include from drivers/staging -> drivers/vhost/, and
just use 'if STAGING' around 'source drivers/vhost/Kbuild.tcm'Changelog v2 -> v3:
Unlock on error in tcm_vhost_drop_nexus() (DanC)
Fix strlen() doesn't count the terminator (DanC)
Call kfree() on an error path (DanC)
Convert tcm_vhost_write_pending to use target_execute_cmd (hch + nab)
Fix another strlen() off by one in tcm_vhost_make_tport (DanC)
Add option under drivers/staging/Kconfig, and move to drivers/vhost/tcm/
as requested by MST (nab)Changelog v1 -> v2:
Fix tv_cmd completion -> release SGL memory leak (nab)
Fix sparse warnings for static variable usage ((Fengguang Wu)
Fix sparse warnings for min() typing + printk format specs (Fengguang Wu)
Convert to cmwq submission for I/O dispatch (nab + hch)Changelog v0 -> v1:
Merge into single source + header file, and move to drivers/vhost/
Acked-by: Michael S. Tsirkin
Cc: Stefan Hajnoczi
Cc: Anthony Liguori
Cc: Zhi Yong Wu
Cc: Paolo Bonzini
Cc: Christoph Hellwig
Cc: Hannes Reinecke
Cc: Jens Axboe
Signed-off-by: Nicholas Bellinger
22 Jul, 2012
2 commits
-
The vhost work queue allows processing to be done in vhost worker thread
context, which uses the owner process mm. Access to the vring and guest
memory is typically only possible from vhost worker context so it is
useful to allow work to be queued directly by users.Currently vhost_net only uses the poll wrappers which do not expose the
work queue functions. However, for tcm_vhost (vhost_scsi) it will be
necessary to queue custom work.Signed-off-by: Stefan Hajnoczi
Cc: Zhi Yong Wu
Cc: Michael S. Tsirkin
Cc: Paolo Bonzini
Signed-off-by: Nicholas Bellinger
Signed-off-by: Michael S. Tsirkin -
In order for other vhost devices to use the VHOST_FEATURES bits the
vhost-net specific bits need to be moved to their own VHOST_NET_FEATURES
constant.(Asias: Update drivers/vhost/test.c to use VHOST_NET_FEATURES)
Signed-off-by: Stefan Hajnoczi
Cc: Zhi Yong Wu
Cc: Michael S. Tsirkin
Cc: Paolo Bonzini
Cc: Asias He
Signed-off-by: Nicholas A. Bellinger
Signed-off-by: Michael S. Tsirkin
27 Jun, 2012
1 commit
-
On some architectures address spaces are set up in a way that this is
not necessary to work properly but on some others (like s390) it is.
Make sure we operate on the user address space to allow copy_xxx_user()
from the vhost_worker() thread by setting it explicitly before calling
use_mm() and revert it after unuse_mm().Signed-off-by: Jens Freimann
Signed-off-by: Christian Borntraeger
Acked-by: Michael S. Tsirkin
Signed-off-by: David S. Miller
17 May, 2012
1 commit
12 May, 2012
1 commit
-
Take vlan header length into account, when vlan id is stored as
vlan_tci. Otherwise tagged packets coming from macvtap will be
truncated.Signed-off-by: Basil Gor
Acked-by: Michael S. Tsirkin
Signed-off-by: David S. Miller
