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The dwmac-sun8i is a heavy hacked version of stmmac hardware by
allwinner.
In fact the only common part is the descriptor management and the first
register function.
Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch adds documentation for Device-Tree bindings for the
syscon present in allwinner devices.
Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch adds documentation for Device-Tree bindings for the
Allwinner dwmac-sun8i driver.
Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Instead of adding more ifthen logic for adding a new mac_device_info
setup function, it is easier to add a function pointer to the function
needed.
Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Thoses symbol will be needed for the dwmac-sun8i ethernet driver.
For letting it to be build as module, they need to be exported.
Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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asm-generic/socket.h already has an exception for the differences that
powerpc needs, so just include it after defining the differences.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add callback to the ethtool flash_device op. This callback uses the mlxfw
module to flash the new firmware file to the device.
As the firmware flash process takes about 20 seconds and ethtool takes the
rtnl lock during the flash_device callback, release the rtnl lock at the
beginning of the flash process and take it again before leaving the
callback. This way, the rtnl is not held during the process. To make sure
the device does not get deleted during the flash process, take a reference
to it before releasing the rtnl lock.
Signed-off-by: Yotam Gigi <yotamg@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Yuval Mintz says:
====================
qed: Status block changes
The device maintains a CAM mapping of the internal status blocks
and the various PF/VF MSI-x vector mappings.
During initialization, the driver reads the HW memory and constructs
a shadow SW implementation which it would later use for manipulation
of interrupts. E.g., when enabling VFs and setting their MSI-x tables.
The driver currently has some very strict assumptions on the order the
entries are placed in the CAM. Specifically, it assumes that all entries
belonging to a PF would be consecutive and in-order in the CAM, and that
the VF entries would then follow. But there's no actual HW constraint
enforcing this assumption [although management firmware does set it
accordingly to same assumption initially].
Since the CAM is re-configurable, there are now SW flows employeed
by other OSes that might cause the assumption to be invalid.
Such flows allow the PF to forfeit some of it's available interrupts
in favor of its VFs or vice versa.
While those are not employeed today by qed, we want to relax the
assumptions as much as we can -
both to allow functionality after PDA as well as allowing future
compatibility where the driver would be loaded after a newer one has
'dirtied' the CAM configuration.
In addition to patches meant for the above relaxation, the series
also contains various cleanups & refactoring for interrupt logic
[most of which is !semantic].
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Since we're resetting the IGU CAM each time we initialize the PF
device, there's no need to reset the VF SBs again when initializing
IOV.
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The IGU CAM contains an assocaition between hardware SBs
and interrupt lines, and it can be dynamically configured
to allow more interrupts in one entity over another, specifically
for Re-distibution of SBs between a PF and its child VFs.
While we don't yet use this functionality, there are other
clients that do and as such its possible the information
passed from management firmware during initialization in
regard to the possible number of SBs doesn't accurately reflect
the current HW configuration.
The following changes are going to apply to the driver init sequence:
a. PF is going to re-configure all entries belonging to itself and
its child VFs in IGU CAM based on the management firmware info
regarding the number of SBs that are supposed to exist there.
b. PF is going to stop using the SB resource [management firmware
provided information] for anything but the initialization.
Instead, it would use the live-time counters it maintains for
the numbers.
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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A PF today holds 2 different arrays - one holding information
about the HW configuration and one holding information about
the SBs that are used by the protocol drivers.
These arrays aren't really connected - e.g., protocol driver
initializing a given SB would not mark the same SB as occupied
in the HW shadow array.
Move into a single array [at least for PFs] - hold the mapping
of the driver-protocol SBs on the HW entry which they configure.
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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IOV code is very intrusive in its manipulation of the status block
database.
Add a new auxiliary function to allow the PF to find an available unused
status block to configure for a specific VF's MSI-x vector.
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Current code assumes there's a known layout for SBs in the IGU,
where all the SBs of a single entity would be laid in consecutive
order of vectors.
While the assumption is still kept by management firmware, we already
have the necessary information to eliminate it, so no reason to keep
it in code.
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We already have an API struct that contains interrupt-related
numbers. Use it to encapsulate all information relating to the
status of SBs as (used|free).
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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An additional step for relaxing the IGU order assumption, we now add
an auxiliary function that can be used for finding the HW status block
that's associated with a given MSI-x vector.
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In qed code, sb_id means 2 different things:
- An interrupt vector [usually when received as a parameter from
a protocol driver, but not only] that's associated with a status
block.
- An index to a status block entity existing in HW.
This patch renames the references to the HW entity, adding an 'igu_'
prefix to allow an easier distinction.
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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As a first step for relaxing various assumptions done by driver
about the IGU mapping, the driver is now going to read the entire
IGU into a shadow copy, and mark in its database each status block
that's relevant for it.
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Separate the portions controlling interrupt enablement form those
controlling the ability of HW to generate attentions.
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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function ksz_rcv can be made static as it does not need to be
in global scope. Reformat arguments to make it checkpatch warning
free too.
Cleans up sparse warning: "symbol 'ksz_rcv' was not declared. Should
it be static?"
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Woojung Huh <Woojung.Huh@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Since the commit 55454a565836 ("ppp: avoid dealock on recursive xmit"),
the PPP xmit path is protected by wrapper functions which disable the
bh already. So it is unnecessary to disable the bh again in the real
xmit path.
Signed-off-by: Gao Feng <gfree.wind@vip.163.com>
Acked-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
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recent updates to inet_rtm_getroute dropped skb_dst_set in
inet_rtm_getroute. This patch restores it because it is
needed to release the dst correctly.
Fixes: 3765d35ed8b9 ("net: ipv4: Convert inet_rtm_getroute to rcu versions of route lookup")
Reported-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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Woojung Huh says:
====================
dsa: add Microchip KSZ9477 DSA driver
This series of patches is for Microchip KSZ9477 DSA driver.
KSZ9477 is 7 ports GigE switch with numerous advanced features.
5 ports are 10/100/1000 Mbps internal PHYs and 2 ports have
Interfaces to SGMII, RGMII, MII or RMII.
This patch supports VLAN, MDB, FDB and port mirroring offloads.
Welcome reviews and comments from community.
Note: Tests are performed on internal development board.
V5
- add missing MODULE_LICENSE
V4
- update per review comments
- cosmetic changes
- net/dsa/tag_ksz.c
* skb_put() & memset() are changed to skb_put_padto()
- drivers/net/dsa/microchip/ksz_common.
* vlan access mutex is updated
* mib_names[] is changed to static const
V3
- update per review comments
- cosmetic changes
- drivers/net/dsa/microchip/ksz_common.c
* clean up ksz_switch_chips[]
* consolidate checking loops into functions
* update mutex for better locking
* replace devm_kmalloc_array() to devm_kcalloc()
- MAINTAINERS
* add missing net/dsa/tag_ksz.c
V2
- update per review comments
- several cosmetic changes
- net/dsa/tag_ksz.c
* constants are changed to defines
* remove skb_linearize() in ksz_rcv()
* ksz_xmit()checks skb tailroom before allocate new skb
- drivers/net/phy/micrel.c
* remove PHY_HAS_MAGICANEG from ksphy_driver[]
- drivers/net/dsa/microchip/ksz_common.c
* add timeout to avoid endless loop
* port initialization is move to ksz_port_enable() instead of ksz_setup_ports()
- Documentation/devicetree/bindings/net/dsa/ksz.txt
* fix typo and indentations
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Adding maintainer of Microchip KSZ switches.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Woojung Huh <Woojung.Huh@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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A sample SPI configuration for Microchip KSZ switches.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Woojung Huh <Woojung.Huh@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The KSZ9477 is a fully integrated layer 2, managed, 7 ports GigE switch
with numerous advanced features. 5 ports incorporate 10/100/1000 Mbps PHYs.
The other 2 ports have interfaces that can be configured as SGMII, RGMII, MII
or RMII. Either of these may connect directly to a host processor or
to an external PHY. The SGMII port may interface to a fiber optic transceiver.
This driver currently supports vlan, fdb, mdb & mirror dsa switch operations.
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Woojung Huh <Woojung.Huh@microchip.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Adding Microchip 9477 Phy included in KSZ9477 Switch.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Woojung Huh <Woojung.Huh@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Adding support for the Microchip KSZ switch family tail tagging.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Woojung Huh <Woojung.Huh@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Alexei Starovoitov says:
====================
bpf: stack depth tracking
Introduce tracking of bpf program stack depth in the verifier and use that
info to reduce bpf program stack consumption in the interpreter and x64 JIT.
Other JITs can take advantage of it as well in the future.
Most of the programs consume very little stack, so it's good optimization
in general and it's the first step toward bpf to bpf function calls.
Also use internal opcode for bpf_tail_call() marking to make clear
that jmp|call|x opcode is not uapi and may be used for actual
indirect call opcode in the future.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Take advantage of stack_depth tracking in x64 JIT.
Round up allocated stack by 8 bytes to make sure it stays aligned
for functions called from JITed bpf program.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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in order to JIT programs with different stack sizes we need to
make epilogue and exception path to be stack size independent,
hence move auxiliary stack space from the bottom of the stack
to the top of the stack.
Nice side effect is that JITed function prologue becomes shorter
due to imm8 offset encoding vs imm32.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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16 __bpf_prog_run() interpreters for various stack sizes add .text
but not a lot comparing to run-time stack savings
text data bss dec hex filename
26350 10328 624 37302 91b6 kernel/bpf/core.o.before_split
25777 10328 624 36729 8f79 kernel/bpf/core.o.after_split
26970 10328 624 37922 9422 kernel/bpf/core.o.now
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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test_bpf.ko doesn't call verifier before selecting interpreter or JITing,
hence the tests need to manually specify the amount of stack they consume.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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To track stack depth of classic bpf programs we only need
to analyze ST|STX instructions, since check_load_and_stores()
verifies that programs can load from stack only after write.
We also need to change the way cBPF stack slots map to eBPF stack,
since typical classic programs are using slots 0 and 1, so they
need to map to stack offsets -4 and -8 respectively in order
to take advantage of small stack interpreter and JITs.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The next set of patches will take advantage of stack_depth tracking,
so make sure that the program that does bpf_tail_call() has
stack depth large enough for the callee.
We could have tracked the stack depth of the prog_array owner program
and only allow insertion of the programs with stack depth less
than the owner, but it will break existing applications.
Some of them have trivial root bpf program that only does
multiple bpf_tail_calls and at init time the prog array is empty.
In the future we may add a flag to do such tracking optionally,
but for now play simple and safe.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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teach verifier to track bpf program stack depth
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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split __bpf_prog_run() interpreter into stack allocation and execution parts.
The code section shrinks which helps interpreter performance in some cases.
text data bss dec hex filename
26350 10328 624 37302 91b6 kernel/bpf/core.o.before
25777 10328 624 36729 8f79 kernel/bpf/core.o.after
Very short programs got slower (due to extra function call):
Before:
test_bpf: #89 ALU64_ADD_K: 1 + 2 = 3 jited:0 7 PASS
test_bpf: #90 ALU64_ADD_K: 3 + 0 = 3 jited:0 8 PASS
test_bpf: #91 ALU64_ADD_K: 1 + 2147483646 = 2147483647 jited:0 7 PASS
test_bpf: #92 ALU64_ADD_K: 4294967294 + 2 = 4294967296 jited:0 11 PASS
test_bpf: #93 ALU64_ADD_K: 2147483646 + -2147483647 = -1 jited:0 7 PASS
After:
test_bpf: #89 ALU64_ADD_K: 1 + 2 = 3 jited:0 11 PASS
test_bpf: #90 ALU64_ADD_K: 3 + 0 = 3 jited:0 11 PASS
test_bpf: #91 ALU64_ADD_K: 1 + 2147483646 = 2147483647 jited:0 11 PASS
test_bpf: #92 ALU64_ADD_K: 4294967294 + 2 = 4294967296 jited:0 14 PASS
test_bpf: #93 ALU64_ADD_K: 2147483646 + -2147483647 = -1 jited:0 10 PASS
Longer programs got faster:
Before:
test_bpf: #266 BPF_MAXINSNS: Ctx heavy transformations jited:0 20286 20513 PASS
test_bpf: #267 BPF_MAXINSNS: Call heavy transformations jited:0 31853 31768 PASS
test_bpf: #268 BPF_MAXINSNS: Jump heavy test jited:0 9815 PASS
test_bpf: #269 BPF_MAXINSNS: Very long jump backwards jited:0 6 PASS
test_bpf: #270 BPF_MAXINSNS: Edge hopping nuthouse jited:0 13959 PASS
test_bpf: #271 BPF_MAXINSNS: Jump, gap, jump, ... jited:0 210 PASS
test_bpf: #272 BPF_MAXINSNS: ld_abs+get_processor_id jited:0 21724 PASS
test_bpf: #273 BPF_MAXINSNS: ld_abs+vlan_push/pop jited:0 19118 PASS
After:
test_bpf: #266 BPF_MAXINSNS: Ctx heavy transformations jited:0 19008 18827 PASS
test_bpf: #267 BPF_MAXINSNS: Call heavy transformations jited:0 29238 28450 PASS
test_bpf: #268 BPF_MAXINSNS: Jump heavy test jited:0 9485 PASS
test_bpf: #269 BPF_MAXINSNS: Very long jump backwards jited:0 12 PASS
test_bpf: #270 BPF_MAXINSNS: Edge hopping nuthouse jited:0 13257 PASS
test_bpf: #271 BPF_MAXINSNS: Jump, gap, jump, ... jited:0 213 PASS
test_bpf: #272 BPF_MAXINSNS: ld_abs+get_processor_id jited:0 19389 PASS
test_bpf: #273 BPF_MAXINSNS: ld_abs+vlan_push/pop jited:0 19583 PASS
For real world production programs the difference is noise.
This patch is first step towards reducing interpreter stack consumption.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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free up BPF_JMP | BPF_CALL | BPF_X opcode to be used by actual
indirect call by register and use kernel internal opcode to
mark call instruction into bpf_tail_call() helper.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Jakub Kicinski says:
====================
nfp: move BPF offload code into app
This series moves the eBPF offload code out of netdev/vNIC handling and
starts building the nfp_app. Port init is moved into the apps as well
because various apps associate vNICs, representors with ports differently.
First patch adds a helper for updating tc stats which has been waiting
in my tree to be included in any moderately related series.
Next series will bring communicating with FW using control messages,
then representors, BPF maps, tc flower... :)
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Free management FW info when app FW load failed.
Fixes: eefbde7e1002 ("nfp: add hwmon support")
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Allow apps to associate private data with vNICs and move
BPF-specific fields of nfp_net to such structure.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Move bulk of the eBPF offload code out of common vNIC code into
app-specific callbacks.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pure move of eBPF offload files to BPF app directory,
only change the names and relative header location.
nfp_asm.h stays in the main dir and it doesn't really
have to include nfp_bpf.h.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Let the app print its name in ethtool -i output.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Start fleshing out the apps by turning the vNIC init code to
a per-app callback. The two initial apps we have are NIC and
eBPF.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Turn the function to read number of ports into a generic helper.
While at it make sure we propagate all errors other than -ENOENT.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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GCC 7 checks for fall through comments, add the two missing ones.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Forgetting to disable preemption around tcf_action_stats_update()
seems to be a common mistake. Add a helper function for updating
stats on all actions of a filter.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue
Jeff Kirsher says:
====================
10GbE Intel Wired LAN Driver Updates 2017-05-31
This series contains updates to ixgbe and ixgbevf only.
Scott enables support for TSO & GSO for MPLS encapsulated packets for both
ixgbe and ixgbevf.
Liwei Song fixes an issue where seqcount/seqlock in ixgbe_get_stats64()
are not initialized in time, so move the initialization into probe routine
after the transmit and receive rings are initialized.
Paul cleans up led_[on|off] for X550EM_X, since the firmware configures
the PHY & MAC and we have no PHY access so LED on/off is not supported
with this device.
Emil provides several fixes, starting with enabling RSS on VF to VF
traffic on the same PF. Fixed PHY identification, where the previous
method was unreliable, so use a different register to ensure proper
identification. Cleaned up the logic which could cause us to
skip the link configuration, this skipping over the link configuration
was leaving SFP+ PHY's in an unstable state, so always call
setup_mac_link(). Added RS1 (rate select 1) support for ixgbe. Lastly,
fixed incorrect logic in the setting up of SFP+ link speed.
Mark fixes the thermal sensor event logic, where it was being executed
when there really was no thermal event. So simplify the logic to only
execute when there is a thermal event.
Tony adds additional error checks and reporting when setting a VF MAC
address to ensure that the MAC filter was successfully added. Also
fixed possible truncation warnings, as well as implicit fallthrough
warnings.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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