Jeff Kirsher says:
====================
40GbE Intel Wired LAN Driver Updates 2018-05-22
This series contains updates to i40e only.
Jake provides all the changes in this series starting with making it
consistent in how we approach the bit lock. Fixed the reporting of the
VEB statistics and the queue statistics to always return every queue
even if it is not currently in use. Use WARN_ONCE() so that the first
time we end up with an incorrect size we will dump a stack trace and a
message to help highlight the issue early in testing. Folded the fixed
string prefix into the stat string definition. Instead of using a
separate char *p pointer when copying strings, use the data pointer
directly. Added code comments for several of the statistic functions to
better explain the number and ordering of statistics.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet says:
====================
tcp: reduce quickack pressure for ECN
Small patch series changing TCP behavior vs quickack and ECN
First patch is a refactoring, adding parameter to tcp_incr_quickack()
and tcp_enter_quickack_mode() helpers.
Second patch implements the change, lowering number of ACK packets
sent after an ECN event.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
ECN signals currently forces TCP to enter quickack mode for
up to 16 (TCP_MAX_QUICKACKS) following incoming packets.
We believe this is not needed, and only sending one immediate ack
for the current packet should be enough.
This should reduce the extra load noticed in DCTCP environments,
after congestion events.
This is part 2 of our effort to reduce pure ACK packets.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Acked-by: Yuchung Cheng <ycheng@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We want to add finer control of the number of ACK packets sent after
ECN events.
This patch is not changing current behavior, it only enables following
change.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Make sure to invoke pci_disable_device() when errors occur in
pcnet32_probe_pci().
Signed-off-by: Bo Chen <chenbo@pdx.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
Initial net_device implementation used ingress_lock spinlock to synchronize
ingress path of device. This lock was used in both process and bh context.
In some code paths action map lock was obtained while holding ingress_lock.
Commit e1e992e52f ("[NET_SCHED] protect action config/dump from irqs")
modified actions to always disable bh, while using action map lock, in
order to prevent deadlock on ingress_lock in softirq. This lock was removed
from net_device, so disabling bh, while accessing action map, is no longer
necessary.
Replace all action idr spinlock usage with regular calls that do not
disable bh.
Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
ILT entry requires 12 bit right shifted physical address.
Existing mask for ILT entry of physical address i.e.
ILT_ENTRY_PHY_ADDR_MASK is not sufficient to handle 64bit
address because upper 8 bits of 64 bit address were getting
masked which resulted in completer abort error on
PCIe bus due to invalid address.
Fix that mask to handle 64bit physical address.
Fixes: fe56b9e6a8 ("qed: Add module with basic common support")
Signed-off-by: Shahed Shaikh <shahed.shaikh@cavium.com>
Signed-off-by: Ariel Elior <ariel.elior@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
There was one place where the timeout value for an operation was
not being set, if a capabilities request was done from idle. Move
the timeout value setting to before where that change might be
requested.
IMHO the cause here is the invisible returns in the macros. Maybe
that's a job for later, though.
Reported-by: Nordmark Claes <Claes.Nordmark@tieto.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Cc: stable@vger.kernel.org
David Ahern says:
====================
net/ipv6: Fix route append and replace use cases
This patch set fixes a few append and replace uses cases for IPv6 and
adds test cases that codifies the expectations of how append and replace
are expected to work. In paricular it allows a multipath route to have
a dev-only nexthop, something Thomas tried to accomplish with commit
edd7ceb782 ("ipv6: Allow non-gateway ECMP for IPv6") which had to be
reverted because of breakage, and to replace an existing FIB entry
with a reject route.
There are a number of inconsistent and surprising aspects to the Linux
API for adding, deleting, replacing and changing FIB entries. For example,
with IPv4 NLM_F_APPEND means insert the route after any existing entries
with the same key (prefix + priority + TOS for IPv4) and NLM_F_CREATE
without the append flag inserts the new route before any existing entries.
IPv6 on the other hand attempts to guess whether a new route should be
appended to an existing one, possibly creating a multipath route, or to
add a new entry after any existing ones. This applies to both the 'append'
(NLM_F_CREATE + NLM_F_APPEND) and 'prepend' (NLM_F_CREATE only) cases
meaning for IPv6 the NLM_F_APPEND is basically ignored. This guessing
whether the route should be added to a multipath route (gateway routes)
or inserted after existing entries (non-gateway based routes) means a
multipath route can not have a dev only nexthop (potentially required in
some cases - tunnels or VRF route leaking for example) and route 'replace'
is a bit adhoc treating gateway based routes and dev-only / reject routes
differently.
This has led to frustration with developers working on routing suites
such as FRR where workarounds such as delete and add are used instead of
replace.
After this patch set there are 2 differences between IPv4 and IPv6:
1. 'ip ro prepend' = NLM_F_CREATE only
IPv4 adds the new route before any existing ones
IPv6 adds new route after any existing ones
2. 'ip ro append' = NLM_F_CREATE|NLM_F_APPEND
IPv4 adds the new route after any existing ones
IPv6 adds the nexthop to existing routes converting to multipath
For the former, there are cases where we want same prefix routes added
after existing ones (e.g., multicast, prefix routes for macvlan when used
for virtual router redundancy). Requiring the APPEND flag to add a new
route to an existing one helps here but is a slight change in behavior
since prepend with gateway routes now create a separate entry.
For the latter IPv6 behavior is preferred - appending a route for the same
prefix and metric to make a multipath route, so really IPv4 not allowing an
existing route to be updated is the limiter. This will be fixed when
nexthops become separate objects - a future patch set.
Thank you to Thomas and Ido for testing earlier versions of this set, and
to Ido for providing an update to the mlxsw driver.
Changes since RFC
- cleanup wording in test script; add comments about expected failures
and why
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Add IPv4 route tests covering add, append and replace permutations.
Assumes the ability to add a basic single path route works; this is
required for example when adding an address to an interface.
$ fib_tests.sh -t ipv4_rt
IPv4 route add / append tests
TEST: Attempt to add duplicate route - gw [ OK ]
TEST: Attempt to add duplicate route - dev only [ OK ]
TEST: Attempt to add duplicate route - reject route [ OK ]
TEST: Add new nexthop for existing prefix [ OK ]
TEST: Append nexthop to existing route - gw [ OK ]
TEST: Append nexthop to existing route - dev only [ OK ]
TEST: Append nexthop to existing route - reject route [ OK ]
TEST: Append nexthop to existing reject route - gw [ OK ]
TEST: Append nexthop to existing reject route - dev only [ OK ]
TEST: add multipath route [ OK ]
TEST: Attempt to add duplicate multipath route [ OK ]
TEST: Route add with different metrics [ OK ]
TEST: Route delete with metric [ OK ]
IPv4 route replace tests
TEST: Single path with single path [ OK ]
TEST: Single path with multipath [ OK ]
TEST: Single path with reject route [ OK ]
TEST: Single path with single path via multipath attribute [ OK ]
TEST: Invalid nexthop [ OK ]
TEST: Single path - replace of non-existent route [ OK ]
TEST: Multipath with multipath [ OK ]
TEST: Multipath with single path [ OK ]
TEST: Multipath with single path via multipath attribute [ OK ]
TEST: Multipath with reject route [ OK ]
TEST: Multipath - invalid first nexthop [ OK ]
TEST: Multipath - invalid second nexthop [ OK ]
TEST: Multipath - replace of non-existent route [ OK ]
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add IPv6 route tests covering add, append and replace permutations.
Assumes the ability to add a basic single path route works; this is
required for example when adding an address to an interface.
$ fib_tests.sh -t ipv6_rt
IPv6 route add / append tests
TEST: Attempt to add duplicate route - gw [ OK ]
TEST: Attempt to add duplicate route - dev only [ OK ]
TEST: Attempt to add duplicate route - reject route [ OK ]
TEST: Add new route for existing prefix (w/o NLM_F_EXCL) [ OK ]
TEST: Append nexthop to existing route - gw [ OK ]
TEST: Append nexthop to existing route - dev only [ OK ]
TEST: Append nexthop to existing route - reject route [ OK ]
TEST: Append nexthop to existing reject route - gw [ OK ]
TEST: Append nexthop to existing reject route - dev only [ OK ]
TEST: Add multipath route [ OK ]
TEST: Attempt to add duplicate multipath route [ OK ]
TEST: Route add with different metrics [ OK ]
TEST: Route delete with metric [ OK ]
IPv6 route replace tests
TEST: Single path with single path [ OK ]
TEST: Single path with multipath [ OK ]
TEST: Single path with reject route [ OK ]
TEST: Single path with single path via multipath attribute [ OK ]
TEST: Invalid nexthop [ OK ]
TEST: Single path - replace of non-existent route [ OK ]
TEST: Multipath with multipath [ OK ]
TEST: Multipath with single path [ OK ]
TEST: Multipath with single path via multipath attribute [ OK ]
TEST: Multipath with reject route [ OK ]
TEST: Multipath - invalid first nexthop [ OK ]
TEST: Multipath - invalid second nexthop [ OK ]
TEST: Multipath - replace of non-existent route [ OK ]
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add option to pause after each test before cleanup is done. Allows
user to do manual inspection or more ad-hoc testing after each test
with the setup in tact.
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add command line options for controlling pause on fail, controlling
specific tests to run and verbose mode rather than relying on environment
variables.
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
As more tests are added, it is convenient to have a tally at the end.
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Bring consistency to ipv6 route replace and append semantics.
Remove rt6_qualify_for_ecmp which is just guess work. It fails in 2 cases:
1. can not replace a route with a reject route. Existing code appends
a new route instead of replacing the existing one.
2. can not have a multipath route where a leg uses a dev only nexthop
Existing use cases affected by this change:
1. adding a route with existing prefix and metric using NLM_F_CREATE
without NLM_F_APPEND or NLM_F_EXCL (ie., what iproute2 calls
'prepend'). Existing code auto-determines that the new nexthop can
be appended to an existing route to create a multipath route. This
change breaks that by requiring the APPEND flag for the new route
to be added to an existing one. Instead the prepend just adds another
route entry.
2. route replace. Existing code replaces first matching multipath route
if new route is multipath capable and fallback to first matching
non-ECMP route (reject or dev only route) in case one isn't available.
New behavior replaces first matching route. (Thanks to Ido for spotting
this one)
Note: Newer iproute2 is needed to display multipath routes with a dev-only
nexthop. This is due to a bug in iproute2 and parsing nexthops.
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Handle append for gateway based routes. Dev-only multipath routes will
be handled by a follow on patch.
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add a helper function for iwarp drivers to be able to map an
rdma_cm_id to an iw_cm_id. This is useful for dumping driver specific
NLDEV/RESTRACK connection state.
Add a helper to return the rdma_cm_id pointer from the rdma_restack
pointer. This is needed for rdma drivers to map a res entry back to
the public rdma_cm_id struct.
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
In active side connections, the provider_data field is not
getting set. This will be used in a subsequent patch to dump
state, so always set it.
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
... and take the "check if file is open, pick ->f_mode" into a helper;
tid_fd_revalidate() can use it.
The next patch will get rid of tid_fd_revalidate() calls in instantiate
callbacks.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
First of all, calling pid_revalidate() in the end of <pid>/* lookups
is *not* about closing any kind of races; that used to be true once
upon a time, but these days those comments are actively misleading.
Especially since pid_revalidate() doesn't even do d_drop() on
failure anymore. It doesn't matter, anyway, since once
pid_revalidate() starts returning false, ->d_delete() of those
dentries starts saying "don't keep"; they won't get stuck in
dcache any longer than they are pinned.
These calls cannot be just removed, though - the side effect of
pid_revalidate() (updating i_uid/i_gid/etc.) is what we are calling
it for here.
Let's separate the "update ownership" into a new helper (pid_update_inode())
and use it, both in lookups and in pid_revalidate() itself.
The comments in pid_revalidate() are also out of date - they refer to
the time when pid_revalidate() used to call d_drop() directly...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
That's one case when unlink() destroys a subtree, thanks to "resource
fork" idiocy. We might forcibly evict that shit on unlink(2), but
for now let's just disallow overmounting; as it is, anything that
plays games with those would leak mounts.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
have all post-xfs_lookup() branches converge on d_splice_alias()
Cc: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
all callers feed something->name/something->len anyway
Cc: "Tigran A. Aivazian" <aivazian.tigran@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This patch adds support for stm32mp1 RTC.
Some common registers with previous RTC version have a different offset.
It is the case for Control Register (CR) and ALaRMA Register (ALRMAR).
There are also new registers regarding event flags: now, Alarm event flag
is in Status Register (SR) and write 1 in Status Clear Register (SCR) is
required to clear the event.
Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
RTC embedded in stm32mp1 SoC is slightly different from stm32h7 one, it
doesn't require to disable backup domain write protection, and rtc_ck
parent clock assignment isn't allowed.
To sum up, stm32mp1 RTC requires 2 clocks, pclk and rtc_ck, and an RTC
alarm interrupt.
Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This patch reworks register/bits management because next version of RTC
uses the same way of working but with different register's offset or bits
moved in new registers.
Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This patch cleans the following checkpatch complaints:
CHECK: 'initalized' may be misspelled - perhaps 'initialized'?
#644: FILE: drivers/rtc/rtc-stm32.c:644:
+ * the calendar has been initalized or not. INITS flag is reset by a
CHECK: Alignment should match open parenthesis
#669: FILE: drivers/rtc/rtc-stm32.c:669:
+ rtc->rtc_dev = devm_rtc_device_register(&pdev->dev, pdev->name,
+ &stm32_rtc_ops, THIS_MODULE);
Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Avoid that complaints similar to the following appear in the kernel log
if the number of zones is sufficiently large:
fio: page allocation failure: order:9, mode:0x140c0c0(GFP_KERNEL|__GFP_COMP|__GFP_ZERO), nodemask=(null)
Call Trace:
dump_stack+0x63/0x88
warn_alloc+0xf5/0x190
__alloc_pages_slowpath+0x8f0/0xb0d
__alloc_pages_nodemask+0x242/0x260
alloc_pages_current+0x6a/0xb0
kmalloc_order+0x18/0x50
kmalloc_order_trace+0x26/0xb0
__kmalloc+0x20e/0x220
blkdev_report_zones_ioctl+0xa5/0x1a0
blkdev_ioctl+0x1ba/0x930
block_ioctl+0x41/0x50
do_vfs_ioctl+0xaa/0x610
SyS_ioctl+0x79/0x90
do_syscall_64+0x79/0x1b0
entry_SYSCALL_64_after_hwframe+0x3d/0xa2
Fixes: 3ed05a987e ("blk-zoned: implement ioctls")
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Cc: Shaun Tancheff <shaun.tancheff@seagate.com>
Cc: Damien Le Moal <damien.lemoal@hgst.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: Hannes Reinecke <hare@suse.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
