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Add skb_frag_off(), skb_frag_off_add(), skb_frag_off_set(),
and skb_frag_off_copy() accessors for page_offset.
Signed-off-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Xin Long says:
====================
sctp: clean up __sctp_connect function
This patchset is to factor out some common code for
sctp_sendmsg_new_asoc() and __sctp_connect() into 2
new functioins.
v1->v2:
- add the patch 1/5 to avoid a slab-out-of-bounds warning.
- add some code comment for the check change in patch 2/5.
- remove unused 'addrcnt' as Marcelo noticed in patch 3/5.
====================
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In this function factored out from sctp_sendmsg_new_asoc() and
__sctp_connect(), it adds a peer with the other addr into the
asoc after this asoc is created with the 1st addr.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In this function factored out from sctp_sendmsg_new_asoc() and
__sctp_connect(), it creates the asoc and adds a peer with the
1st addr.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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__sctp_connect is doing quit similar things as sctp_sendmsg_new_asoc.
To factor out common functions, this patch is to clean up their code
to make them look more similar:
1. create the asoc and add a peer with the 1st addr.
2. add peers with the other addrs into this asoc one by one.
while at it, also remove the unused 'addrcnt'.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Now __sctp_connect() is called by __sctp_setsockopt_connectx() and
sctp_inet_connect(), the latter has done addr_size check with size
of sa_family_t.
In the next patch to clean up __sctp_connect(), we will remove
addr_size check with size of sa_family_t from __sctp_connect()
for the 1st address.
So before doing that, __sctp_setsockopt_connectx() should do
this check first, as sctp_inet_connect() does.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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'addr' passed to sctp_transport_init is not always a whole size
of union sctp_addr, like the path:
sctp_sendmsg() ->
sctp_sendmsg_new_asoc() ->
sctp_assoc_add_peer() ->
sctp_transport_new() -> sctp_transport_init()
In the next patches, we will also pass the address length of data
only to sctp_assoc_add_peer().
So sctp_transport_init() should copy the only available data from
addr to peer->ipaddr, instead of 'peer->ipaddr = *addr' which may
cause slab-out-of-bounds.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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rxkad sometimes triggers a warning about oversized stack frames when
building with clang for a 32-bit architecture:
net/rxrpc/rxkad.c:243:12: error: stack frame size of 1088 bytes in function 'rxkad_secure_packet' [-Werror,-Wframe-larger-than=]
net/rxrpc/rxkad.c:501:12: error: stack frame size of 1088 bytes in function 'rxkad_verify_packet' [-Werror,-Wframe-larger-than=]
The problem is the combination of SYNC_SKCIPHER_REQUEST_ON_STACK() in
rxkad_verify_packet()/rxkad_secure_packet() with the relatively large
scatterlist in rxkad_verify_packet_1()/rxkad_secure_packet_encrypt().
The warning does not show up when using gcc, which does not inline the
functions as aggressively, but the problem is still the same.
Allocate the cipher buffers from the slab instead, caching the allocated
packet crypto request memory used for DATA packet crypto in the rxrpc_call
struct.
Fixes: 17926a79320a ("[AF_RXRPC]: Provide secure RxRPC sockets for use by userspace and kernel both")
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
cc: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Michael Chan says:
====================
bnxt_en: Add TPA (GRO_HW and LRO) on 57500 chips.
This patchset adds TPA v2 support on the 57500 chips. TPA v2 is
different from the legacy TPA scheme on older chips and requires major
refactoring and restructuring of the existing TPA logic. The main
difference is that the new TPA v2 has on-the-fly aggregation buffer
completions before a TPA packet is completed. The larger aggregation
ID space also requires a new ID mapping logic to make it more
memory efficient.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Define the 57508, 57504, and 57502 chip IDs that are all part of the
BNXT_CHIP_P5 family of chips.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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With the new TPA feature in the 57500 chips, we need to discover the
feature first before setting up the netdev features. Refactor the
the firmware probe and init logic more cleanly into 2 functions and
and make these calls before setting up the netdev features.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Support the new expanded TPA v2 counters on 57500 B0 chips for
ethtool -S.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The new TPA implemantation has additional TPA counters that extend the
per-ring statistics block. Allocate the proper size accordingly.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The current code assumes that the per ring statistics counters are
fixed. In newer chips that support a newer version of TPA, the
TPA counters are also changed. Refactor the code by defining these
counter names in arrays so that it is easy to add a new array for
a new set of counters supported by the newer chips.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add a more optimized hardware GRO function to setup the SKB on 57500
chips. Some workaround code is no longer needed on 57500 chips and
the pseudo checksum is also calculated in hardware, so no need to
do the software pseudo checksum in the driver.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The new TPA feature on 57500 supports a larger number of concurrent TPAs
(up to 1024) divided among the functions. We need to add some logic to
map the hardware TPA ID to a software index that keeps track of each TPA
in progress. A 1:1 direct mapping without translation would be too
wasteful as we would have to allocate 1024 TPA structures for each RX
ring on each PCI function.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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With all the previous refactoring, the TPA fast path can now be
modified slightly to support TPA on the new chips. The main
difference is that the agg completions are retrieved differently using
the bnxt_get_tpa_agg_p5() function on the new chips.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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On 57500 chips, hardware GRO mode cannot be determined from the TPA
end, so we need to check bp->flags to determine if we are in hardware
GRO mode or not. Modify bnxt_set_features so that the TPA flags
in bp->flags don't change until the device is closed. This will ensure
that the fast path can safely rely on bp->flags to determine the
TPA mode.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The 2 GRO functions to set up the hardware GRO SKB fields for 2
different hardware chips have practically identical logic for
tunneled packets. Refactor the logic into a separate bnxt_gro_tunnel()
function that can be used by both functions.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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On the new 57500 chips, these new RX_AGG completions are not coalesced
at the TPA_END completion. Handle these by storing them in the
array in the bnxt_tpa_info struct, as they are seen when processing
the CMPL ring.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add an aggregation array to bnxt_tpa_info struct to keep track of the
aggregation completions. The aggregation completions are not
completed at the TPA_END completion on 57500 chips so we need to
keep track of them. The array is only allocated on the new chips
when required. An agg_count field is also added to keep track of the
number of these completions.
The maximum concurrent TPA is now discovered from firmware instead of
the hardcoded 64. Add a new bp->max_tpa to keep track of maximum
configured TPA.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Refactor the TPA logic slightly, so that the code can be more easily
extended to support TPA on the new 57500 chips. In particular, the
logic to get the next aggregation completion is refactored into a
new function bnxt_get_agg() so that this operation is made more
generalized. This operation will be different on the new chip in TPA
mode. The logic to recycle the aggregation buffers has a new start
index parameter added for the same purpose.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The new chips have a slightly modified TPA interface for LRO/GRO_HW.
Modify the TPA structures so that the same structures can also be
used on the new chips.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Among the changes are new CoS discard counters and new ctx_hw_stats_ext
struct for the latest 5750X B0 chips.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Commit 60649d4e0af ("can: remove obsolete empty ioctl() handler") replaced the
almost empty can_ioctl() function with sock_no_ioctl() which always returns
-EOPNOTSUPP.
Even though we don't have any ioctl() functions on socket/network layer we need
to return -ENOIOCTLCMD to be able to forward ioctl commands like SIOCGIFINDEX
to the network driver layer.
This patch fixes the wrong return codes in the CAN network layer protocols.
Reported-by: kernel test robot <rong.a.chen@intel.com>
Fixes: 60649d4e0af ("can: remove obsolete empty ioctl() handler")
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We have an ERPS (Ethernet Ring Protection Switching) setup involving
mv88e6250 switches which we're in the process of switching to a BSP
based on the mainline driver. Breaking any link in the ring works as
expected, with the ring reconfiguring itself quickly and traffic
continuing with almost no noticable drops. However, when plugging back
the cable, we see 5+ second stalls.
This has been tracked down to the userspace application in charge of
the protocol missing a few CCM messages on the good link (the one that
was not unplugged), causing it to broadcast a "signal fail". That
message eventually reaches its link partner, which responds by
blocking the port. Meanwhile, the first node has continued to block
the port with the just plugged-in cable, breaking the network. And the
reason for those missing CCM messages has in turn been tracked down to
the VTU apparently being too busy servicing load/purge operations that
the normal lookups are delayed.
Initial state, the link between C and D is blocked in software.
_____________________
/ \
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A ----- B ----- C *---- D
Unplug the cable between C and D.
_____________________
/ \
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A ----- B ----- C * * D
Reestablish the link between C and D.
_____________________
/ \
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A ----- B ----- C *---- D
Somehow, enough VTU/ATU operations happen inside C that prevents
the application from receving the CCM messages from B in a timely
manner, so a Signal Fail message is sent by C. When B receives
that, it responds by blocking its port.
_____________________
/ \
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A ----- B *---* C *---- D
Very shortly after this, the signal fail condition clears on the
BC link (some CCM messages finally make it through), so C
unblocks the port. However, a guard timer inside B prevents it
from removing the blocking before 5 seconds have elapsed.
It is not unlikely that our userspace ERPS implementation could be
smarter and/or is simply buggy. However, this patch fixes the symptoms
we see, and is a small optimization that should not break anything
(knock wood). The idea is simply to avoid doing an VTU load of an
entry identical to the one already present. To do that, we need to
know whether mv88e6xxx_vtu_get() actually found an existing entry, or
has just prepared a struct mv88e6xxx_vtu_entry for us to load. To that
end, let vlan->valid be an output parameter. The other two callers of
mv88e6xxx_vtu_get() are not affected by this patch since they pass
new=false.
Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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There was a previous attempt to use xmit_more, but the change had to be
reverted because under load sometimes a transmit timeout occurred [0].
Maybe this was caused by a missing memory barrier, the new attempt
keeps the memory barrier before the call to netif_stop_queue like it
is used by the driver as of today. The new attempt also changes the
order of some calls as suggested by Eric.
[0] https://lkml.org/lkml/2019/2/10/39
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add compile test support by moving all includes of files under
asm/octeon into octeon-ethernet.h, and if we're not on MIPS,
stub out all the calls into the octeon support code in octeon-stubs.h
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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use resource_size to calcuate ioremap size and make
the code simpler.
Signed-off-by: Ding Xiang <dingxiang@cmss.chinamobile.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Andy Shevchenko says:
====================
NFC: nxp-nci: clean up and new device support
Few people reported that some laptops are coming with new ACPI ID for the
devices should be supported by nxp-nci driver.
This series adds new ID (patch 2), cleans up the driver from legacy platform
data and unifies GPIO request for Device Tree and ACPI (patches 3-6), removes
dead or unneeded code (patches 7, 9, 11), constifies ID table (patch 8),
removes comma in terminator line for better maintenance (patch 10) and
rectifies Kconfig entry (patches 12-14).
It also contains a fix for NFC subsystem as suggested by Sedat.
Series has been tested by Sedat.
Changelog v4:
- rebased on top of latest linux-next
- appended cover letter
- elaborated removal of pr_fmt() in the patch 11 (David)
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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This is a simple cleanup to the Kconfig help text as discussed in [1].
[1] https://marc.info/?t=155774435600001&r=1&w=2
Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Suggested-by: Oleg Zhurakivskyy <oleg.zhurakivskyy@intel.com>
Signed-off-by: Sedat Dilek <sedat.dilek@credativ.de>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch clarifies on the supported NXP NCI chips and families
and lists PN547 and PN548 separately which are known as NPC100
respectively NPC300.
This helps to find informations and identify drivers on vendor's
support websites.
For details see the discussion in [1] and [2].
[1] https://marc.info/?t=155774435600001&r=1&w=2
[2] https://patchwork.kernel.org/project/linux-wireless/list/?submitter=33142
Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Suggested-by: Oleg Zhurakivskyy <oleg.zhurakivskyy@intel.com>
Signed-off-by: Sedat Dilek <sedat.dilek@credativ.de>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Oleg Zhurakivskyy <oleg.zhurakivskyy@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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It seems contributors follow the style of Kconfig entries where explicit
'default n' is present. The default 'default' is 'n' already, thus, drop
these lines from Kconfig to make it more clear.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The macro had never been used.
The driver uses mostly the nfc_err(), which, with other macros in the family,
is backed by corresponding dev_err(). pr_fmt() is not used for dev_err()
macro. Moreover, there is no need to print the module name which is part of the
device instance name anyway.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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There is no need to have a comma after terminator entry
in the arrays of IDs.
This may prevent the misguided addition behind the terminator
without compiler notice.
Drop the comma in terminator lines for good.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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There is no need to guard OF device ID table with of_match_ptr().
Otherwise we would get a defined but not used data.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The content of acpi_device_id is not supposed to change at runtime.
All functions working with acpi_device_id provided by <linux/acpi.h>
work with const acpi_device_id. So mark the non-const structs as const.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Return directly in ->probe() since there no special cleaning is needed.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Since OF and ACPI case almost the same get rid of code duplication
by moving gpiod_get() calls directly to ->probe().
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In order to unify GPIO resource request prepare gpiod_get_index()
to behave correctly when there is no mapping provided by firmware.
Here we add explicit mapping between _CRS GpioIo() resources and
their names used in the driver.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Since we got rid of platform data, the driver may use
GPIO descriptor directly.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Legacy platform data must go away. We are on the safe side here since
there are no users of it in the kernel.
If anyone by any odd reason needs it the GPIO lookup tables and
built-in device properties at your service.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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It seems a lot of laptops are equipped with NXP NFC300 chip with
the ACPI ID NXP1001 as per DSDT.
Append it to the driver's ACPI ID table.
Reported-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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nfc_genl_deactivate_target() relies on the NFC_ATTR_TARGET_INDEX
attribute being present, but doesn't check whether it is actually
provided by the user. Same goes for nfc_genl_fw_download() and
NFC_ATTR_FIRMWARE_NAME.
This patch adds appropriate checks.
Found with syzkaller.
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Huazhong Tan says:
====================
net: hns3: some code optimizations & bugfixes & features
This patch-set includes code optimizations, bugfixes and features for
the HNS3 ethernet controller driver.
[patch 1/10] checks reset status before setting channel.
[patch 2/10] adds a NULL pointer checking.
[patch 3/10] removes reset level upgrading when current reset fails.
[patch 4/10] fixes a GFP flags errors when holding spin_lock.
[patch 5/10] modifies firmware version format.
[patch 6/10] adds some print information which is off by default.
[patch 7/10 - 8/10] adds two code optimizations about interrupt handler
and work task.
[patch 9/10] adds support for using order 1 pages with a 4K buffer.
[patch 10/10] modifies messages prints with dev_info() instead of
pr_info().
Change log:
V3->V4: replace netif_info with netif_dbg in [patch 6/10]
V2->V3: fixes comments from Saeed Mahameed and Joe Perches.
V1->V2: fixes comments from Saeed Mahameed and
removes previous [patch 4/11] and [patch 11/11]
which needs further discussion, and adds a new
patch [10/10] suggested by Saeed Mahameed.
====================
Reviewed-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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dev_info() is more appropriate for printing messages when driver
initialization done, so switch to dev_info().
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Hardware supports 0.5K, 1K, 2K, 4K RX buffer size, the
RX buffer can not be reused because the hns3_page_order
return 0 when page size and RX buffer size are both 4096.
So this patch changes the hns3_page_order to return 1 when
RX buffer is greater than half of the page size and page size
is less the 8192, and dev_alloc_pages has already been used
to allocate the compound page for RX buffer.
This patch also changes hnae3_* to hns3_* for page order
and RX buffer size calculation because they are used in
hns3 module.
Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Reviewed-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The misc interrupt is used to schedule the reset and mailbox
subtask, and service_task delayed_work is used to do periodic
management work each second.
This patch sets the above three subtask's affinity using the
misc interrupt' affinity.
Also this patch setups a affinity notify for misc interrupt to
allow user to change the above three subtask's affinity.
Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Use delayed work instead of using timers to trigger the
hclge_serive.
Simplify the code with one less middle function and in order
to support misc irq affinity.
Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Reviewed-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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