Move the nexthop evaluation of a fib entry to a helper that can be
leveraged for each fib6_nh in a multipath nexthop object.
In the move, 'continue' statements means the helper returns false
(loop should continue) and 'break' means return true (found the entry
of interest).
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Move the device and gateway checks in the fib6_next loop to a helper
that can be called per fib6_nh entry.
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Move the siblings and fib6_multipath_select after the null entry check
since a null entry can not have siblings.
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Clean up the fib6_null_entry handling in ip6_pol_route_lookup.
rt6_device_match can return fib6_null_entry, but fib6_multipath_select
can not. Consolidate the fib6_null_entry handling and on the final
null_entry check set rt and goto out - no need to defer to a second
check after rt6_find_cached_rt.
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
find_rr_leaf has 3 loops over fib_entries calling find_match. The loops
are very similar with differences in start point and whether the metric
is evaluated:
1. start at rr_head, no extra loop compare, check fib metric
2. start at leaf, compare rt against rr_head, check metric
3. start at cont (potential saved point from earlier loops), no
extra loop compare, no metric check
Create 1 loop that is called 3 different times. This will make a
later change with multipath nexthop objects much simpler.
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
find_match primarily needs a fib6_nh (and fib6_flags which it passes
through to rt6_score_route). Move fib6_check_expired up to the call
sites so find_match is only called for relevant entries. Remove the
match argument which is mostly a pass through and use the return
boolean to decide if match gets set in the call sites.
The end result is a helper that can be called per fib6_nh struct
which is needed once fib entries reference nexthop objects that
have more than one fib6_nh.
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
rt6_score_route only needs the fib6_flags and nexthop data. Change
it accordingly. Allows re-use later for nexthop based fib6_nh.
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
rt6_probe sends probes for gateways in a nexthop. As such it really
depends on a fib6_nh, not a fib entry. Move last_probe to fib6_nh and
update rt6_probe to a fib6_nh struct.
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
rt6_check_dev is a simpler helper with only 1 caller. Fold the code
into rt6_score_route.
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Change rt6_check_neigh to take a fib6_nh instead of a fib entry.
Move the check on fib_flags and whether the nexthop has a gateway
up to the one caller.
Remove the inline from the definition as well. Not necessary.
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The zero namelen check is redundant as it has already been checked
for zero at the start of the function. Remove the redundant check.
Addresses-Coverity: ("Logically Dead Code")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In the function tipc_node_create() we protect the peer capability field
by using the node rw_lock. However, we access the lock directly instead
of using the dedicated functions for this, as we do everywhere else in
node.c. This cosmetic spot is fixed here.
Fixes: 40999f11ce ("tipc: make link capability update thread safe")
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Implementation of function rhashtable_insert_fast() check if its internal
helper function __rhashtable_insert_fast() returns non-NULL pointer and
seemingly return -EEXIST in such case. However, since
__rhashtable_insert_fast() is called with NULL key pointer, it never
actually checks for duplicates, which means that -EEXIST is never returned
to the user. Use rhashtable_lookup_insert_fast() hash table API instead. In
order to verify that it works as expected and prevent the problem from
happening in future, extend tc-tests with new test that verifies that no
new filters with existing key can be inserted to flower classifier.
Fixes: 1f17f7742e ("net: sched: flower: insert filter to ht before offloading it to hw")
Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
NETNSA_NSID is signed. Use nla_get_s32() to avoid confusion.
Signed-off-by: Guillaume Nault <gnault@redhat.com>
Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Remove not useful protocol version check in gue_udp_recv since just
gue version 0 can hit that code. Moreover remove duplicated hdrlen
computation
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Correct spelling of encapsulation.
Found by inspection.
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Leandro Dorileo says:
====================
net/sched: taprio: fix picos_per_byte miscalculation
This set fixes miscalculations based on invalid link speed values.
Changes in v6:
+ Avoid locking a spinlock while calling __ethtool_get_link_ksettings()
(suggested by: Cong Wang);
Changes in v5:
+ Don't iterate over all the net_device maintained list (suggested by: Florian Fainelli);
Changes in v4:
+ converted pr_info calls to netdev_dbg (suggested by: Florian Fainelli);
Changes in v3:
+ yet pr_info() format warnings;
Changes in v2:
+ fixed pr_info() format both on cbs and taprio patches;
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
The Credit Based Shaper heavily depends on link speed to calculate
the scheduling credits, we can't properly calculate the credits if the
device has failed to report the link speed.
In that case we can't dequeue packets assuming a wrong port rate that will
result into an inconsistent credit distribution.
This patch makes sure we fail to dequeue case:
1) __ethtool_get_link_ksettings() reports error or 2) the ethernet driver
failed to set the ksettings' speed value (setting link speed to
SPEED_UNKNOWN).
Additionally we properly re calculate the port rate whenever the link speed
is changed.
Fixes: 3d0bd028ff ("net/sched: Add support for HW offloading for CBS")
Signed-off-by: Leandro Dorileo <leandro.maciel.dorileo@intel.com>
Reviewed-by: Vedang Patel <vedang.patel@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The Time Aware Priority Scheduler is heavily dependent to link speed,
it relies on it to calculate transmission bytes per cycle, we can't
properly calculate the so called budget if the device has failed
to report the link speed.
In that case we can't dequeue packets assuming a wrong budget.
This patch makes sure we fail to dequeue case:
1) __ethtool_get_link_ksettings() reports error or 2) the ethernet
driver failed to set the ksettings' speed value (setting link speed
to SPEED_UNKNOWN).
Additionally we re calculate the budget whenever the link speed is
changed.
Fixes: 5a781ccbd1 ("tc: Add support for configuring the taprio scheduler")
Signed-off-by: Leandro Dorileo <leandro.maciel.dorileo@intel.com>
Reviewed-by: Vedang Patel <vedang.patel@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Govindarajulu reported a regression with Network Manager which sends an
RTA_GATEWAY attribute with the address set to 0. Fixup the handling of
RTA_GATEWAY to only set fc_gw_family if the gateway address is actually
set.
Fixes: f35b794b3b ("ipv4: Prepare fib_config for IPv6 gateway")
Reported-by: Govindarajulu Varadarajan <govind.varadar@gmail.com>
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Paolo Abeni says:
====================
net: sched: move back qlen to per CPU accounting
The commit 46b1c18f9d ("net: sched: put back q.qlen into a single location")
introduced some measurable regression in the contended scenarios for
lock qdisc.
As Eric suggested we could replace q.qlen access with calls to qdisc_is_empty()
in the datapath and revert the above commit. The TC subsystem updates
qdisc->is_empty in a somewhat loose way: notably 'is_empty' is set only when
the qdisc dequeue() calls return a NULL ptr. That is, the invocation after
the last packet is dequeued.
The above is good enough for BYPASS implementation - the only downside is that
we end up avoiding the optimization for a very small time-frame - but will
break hard things when internal structures consistency for classful qdisc
relies on child qdisc_is_empty().
A more strict 'is_empty' update adds a relevant complexity to its life-cycle, so
this series takes a different approach: we allow lockless qdisc to switch from
per CPU accounting to global stats accounting when the NOLOCK bit is cleared.
Since most pieces of infrastructure are already in place, this requires very
little changes to the pfifo_fast qdisc, and any later NOLOCK qdisc can hook
there with little effort - no need to maintain two different implementations.
The first 2 patches removes direct qlen access from non core TC code, the 3rd
and 4th patches place and use the infrastructure to allow stats account
switching and the 5th patch is the actual revert.
v1 -> v2:
- fixed build issues
- more descriptive commit message for patch 5/5
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
This revert commit 46b1c18f9d ("net: sched: put back q.qlen into
a single location").
After the previous patch, when a NOLOCK qdisc is enslaved to a
locking qdisc it switches to global stats accounting. As a consequence,
when a classful qdisc accesses directly a child qdisc's qlen, such
qdisc is not doing per CPU accounting and qlen value is consistent.
In the control path nobody uses directly qlen since commit
e5f0e8f8e4 ("net: sched: introduce and use qdisc tree flush/purge
helpers"), so we can remove the contented atomic ops from the
datapath.
v1 -> v2:
- complete the qdisc_qstats_atomic_qlen_dec() ->
qdisc_qstats_cpu_qlen_dec() replacement, fix build issue
- more descriptive commit message
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Since stats updating is always consistent with TCQ_F_CPUSTATS flag,
we can disable it at qdisc creation time flipping such bit.
In my experiments, if the NOLOCK flag is cleared, per CPU stats
accounting does not give any measurable performance gain, but it
waste some memory.
Let's clear TCQ_F_CPUSTATS together with NOLOCK, when enslaving
a NOLOCK qdisc to 'lock' one.
Use stats update helper inside pfifo_fast, to cope correctly with
TCQ_F_CPUSTATS flag change.
As a side effect, q.qlen value for any child qdiscs is always
consistent for all lock classfull qdiscs.
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The core sched implementation checks independently for NOLOCK flag
to acquire/release the root spin lock and for qdisc_is_percpu_stats()
to account per CPU values in many places.
This change update the last few places checking the TCQ_F_NOLOCK to
do per CPU stats accounting according to qdisc_is_percpu_stats()
value.
The above allows to clean dev_requeue_skb() implementation a bit
and makes stats update always consistent with a single flag.
v1 -> v2:
- do not move qdisc_is_empty definition, fix build issue
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When checking for root qdisc queue length, do not access directly q.qlen.
In the following patches we will move back qlen accounting to per CPU
values for NOLOCK qdiscs.
Instead, prefer the qdisc_is_empty() helper usage.
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Such helper does not cope correctly with NOLOCK qdiscs.
In the following patches we will move back qlen to per CPU
values for such qdiscs, so qdisc_qlen_sum() is not an option,
too.
Instead, use qlen only for lock qdiscs, and always set
flow off for NOLOCK qdiscs with a not empty tx queue.
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
genphy_c45_aneg_done() is used by phylib as fallback for c45 PHY's if
callback aneg_done isn't defined. So we don't have to set this
explicitly. Same for genphy_c45_pma_read_abilities().
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Pirko says:
====================
netdevsim: small spring cleanup
Nothing serious, just cosmetics.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Since commit f6b19b354d ("net: devlink: select NET_DEVLINK
from drivers") adds implicit select of NET_DEVLINK for
netdevsim, the code does not have to deal with the case
when CONFIG_NET_DEVLINK is not enabled. So remove the ifcase.
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
No need to free it ourselves, just set the "needs_free_netdev" flag
and leave the work to net core.
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Remove nsim_dellink() implementation. The rtnetlink code sets the
dellink op to unregister_netdevice_queue(), so this is not needed.
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull networking fixes from David Miller:
1) Off by one and bounds checking fixes in NFC, from Dan Carpenter.
2) There have been many weird regressions in r8169 since we turned ASPM
support on, some are still not understood nor completely resolved.
Let's turn this back off for now. From Heiner Kallweit.
3) Signess fixes for ethtool speed value handling, from Michael
Zhivich.
4) Handle timestamps properly in macb driver, from Paul Thomas.
5) Two erspan fixes, it's the usual "skb ->data potentially reallocated
and we're holding a stale protocol header pointer". From Lorenzo
Bianconi.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
bnxt_en: Reset device on RX buffer errors.
bnxt_en: Improve RX consumer index validity check.
net: macb driver, check for SKBTX_HW_TSTAMP
qlogic: qlcnic: fix use of SPEED_UNKNOWN ethtool constant
broadcom: tg3: fix use of SPEED_UNKNOWN ethtool constant
ethtool: avoid signed-unsigned comparison in ethtool_validate_speed()
net: ip6_gre: fix possible use-after-free in ip6erspan_rcv
net: ip_gre: fix possible use-after-free in erspan_rcv
r8169: disable ASPM again
MAINTAINERS: ieee802154: update documentation file pattern
net: vrf: Fix ping failed when vrf mtu is set to 0
selftests: add a tc matchall test case
nfc: nci: Potential off by one in ->pipes[] array
NFC: nci: Add some bounds checking in nci_hci_cmd_received()
Pull TPM fixes from James Morris:
"From Jarkko: These are critical fixes for v5.1. Contains also couple
of new selftests for v5.1 features (partial reads in /dev/tpm0)"
* 'fixes-v5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
selftests/tpm2: Open tpm dev in unbuffered mode
selftests/tpm2: Extend tests to cover partial reads
KEYS: trusted: fix -Wvarags warning
tpm: Fix the type of the return value in calc_tpm2_event_size()
KEYS: trusted: allow trusted.ko to initialize w/o a TPM
tpm: fix an invalid condition in tpm_common_poll
tpm: turn on TPM on suspend for TPM 1.x
- fix syscall number passed to trace_sys_exit;
- fix syscall number initialization in start_thread;
- fix level interpretation in the return_address;
- fix format string warning in init_pmd.
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Merge tag 'xtensa-20190408' of git://github.com/jcmvbkbc/linux-xtensa
Pull xtensa fixes from Max Filippov:
- fix syscall number passed to trace_sys_exit
- fix syscall number initialization in start_thread
- fix level interpretation in the return_address
- fix format string warning in init_pmd
* tag 'xtensa-20190408' of git://github.com/jcmvbkbc/linux-xtensa:
xtensa: fix format string warning in init_pmd
xtensa: fix return_address
xtensa: fix initialization of pt_regs::syscall in start_thread
xtensa: use actual syscall number in do_syscall_trace_leave
Michael Chan says:
====================
bnxt_en: 2 bug fixes.
The first patch prevents possible driver crash if we get a bad RX index
from the hardware. The second patch resets the device when the hardware
reports buffer error to recover from the error.
Please queue these for -stable also. Thanks.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
If the RX completion indicates RX buffers errors, the RX ring will be
disabled by firmware and no packets will be received on that ring from
that point on. Recover by resetting the device.
Fixes: c0c050c58d ("bnxt_en: New Broadcom ethernet driver.")
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
There is logic to check that the RX/TPA consumer index is the expected
index to work around a hardware problem. However, the potentially bad
consumer index is first used to index into an array to reference an entry.
This can potentially crash if the bad consumer index is beyond legal
range. Improve the logic to use the consumer index for dereferencing
after the validity check and log an error message.
Fixes: fa7e28127a ("bnxt_en: Add workaround to detect bad opaque in rx completion (part 2)")
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Make sure SKBTX_HW_TSTAMP (i.e. SOF_TIMESTAMPING_TX_HARDWARE) has been
enabled for this skb. It does fix the issue where normal socks that
aren't expecting a timestamp will not wake up on select, but when a
user does want a SOF_TIMESTAMPING_TX_HARDWARE it does work.
Signed-off-by: Paul Thomas <pthomas8589@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Use constants provided by ethtool.h for speed and duplex values
instead of raw integer constants to increase code readability.
thunder_bgx already uses SPEED_UNKNOWN and DUPLEX_UNKNOWN constants,
also provided by ethtool.h.
Signed-off-by: Michael Zhivich <mzhivich@akamai.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
The original patch didn't set phydev->autoneg_complete in one exit path.
Fix this.
Fixes: 4950c2ba49 ("net: phy: fix autoneg mismatch case in genphy_read_status")
Reported-by: Simon Horman <horms@verge.net.au>
Tested-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Michael Zhivich says:
====================
ethtool: fix use of SPEED_UNKNOWN constant
This patch series addresses 2 related issues:
1. ethtool_validate_speed() triggers a "signed-unsigned comparison"
warning due to type difference of SPEED_UNKNOWN constant (int)
and argument to ethtool_validate_speed (__u32).
2. some drivers use u16 storage for SPEED_UNKNOWN constant,
resulting in value truncation and thus failure to test against
SPEED_UNKNOWN correctly.
This revised series addresses several feedback comments:
- split up the patch in to series
- do not unnecessarily change drivers that use "int" storage
for speed values
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
qlcnic driver uses u16 to store SPEED_UKNOWN ethtool constant,
which is defined as -1, resulting in value truncation and
thus incorrect test results against SPEED_UNKNOWN.
For example, the following test will print "False":
u16 speed = SPEED_UNKNOWN;
if (speed == SPEED_UNKNOWN)
printf("True");
else
printf("False");
Change storage of speed to use u32 to avoid this issue.
Signed-off-by: Michael Zhivich <mzhivich@akamai.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
tg3 driver uses u16 to store SPEED_UKNOWN ethtool constant,
which is defined as -1, resulting in value truncation and
thus incorrect test results against SPEED_UNKNOWN.
For example, the following test will print "False":
u16 speed = SPEED_UNKNOWN;
if (speed == SPEED_UNKNOWN)
printf("True");
else
printf("False");
Change storage of speed to use u32 to avoid this issue.
Signed-off-by: Michael Zhivich <mzhivich@akamai.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
When building C++ userspace code that includes ethtool.h
with "-Werror -Wall", g++ complains about signed-unsigned comparison in
ethtool_validate_speed() due to definition of SPEED_UNKNOWN as -1.
Explicitly cast SPEED_UNKNOWN to __u32 to match type of
ethtool_validate_speed() argument.
Signed-off-by: Michael Zhivich <mzhivich@akamai.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Expose the following ASIC information via devlink info command:
- Driver name
- Hardware revision
- Firmware PSID
- Running firmware version
Standard output example:
$ devlink dev info pci/0000:03:00.0
pci/0000:03:00.0:
driver mlxsw_spectrum
versions:
fixed:
hw.revision A0
fw.psid MT_2750110033
running:
fw.version 13.1910.622
Signed-off-by: Shalom Toledo <shalomt@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add MGIR register. MGIR, Management General Information Register, allows
software to query the hardware and firmware general information.
Signed-off-by: Shalom Toledo <shalomt@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
