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This patch adds support for vlan_id, vlan_priority and vlan_proto match
for flowtable offload.
Signed-off-by: wenxu <wenxu@ucloud.cn>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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For devices that use a programmable clock for the AVB reference clock,
the driver may need to enable them. Add code to find the optional clock
and enable it when available.
Signed-off-by: Adam Ford <aford173@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The AVB driver assumes there is an external crystal, but it could
be clocked by other means. In order to enable a programmable
clock, it needs to be added to the clocks list and enabled in the
driver. Since there currently only one clock, there is no
clock-names list either.
Update bindings to add the additional optional clock, and explicitly
name both of them.
Signed-off-by: Adam Ford <aford173@gmail.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Sergei Shtylyov <sergei.shtylyov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Yangbo Lu says:
====================
enetc: support PTP Sync packet one-step timestamping
This patch-set is to add support for PTP Sync packet one-step timestamping.
Since ENETC single-step register has to be configured dynamically per
packet for correctionField offeset and UDP checksum update, current
one-step timestamping packet has to be sent only when the last one
completes transmitting on hardware. So, on the TX, this patch handles
one-step timestamping packet as below:
- Trasmit packet immediately if no other one in transfer, or queue to
skb queue if there is already one in transfer.
The test_and_set_bit_lock() is used here to lock and check state.
- Start a work when complete transfer on hardware, to release the bit
lock and to send one skb in skb queue if has.
Changes for v2:
- Rebased.
- Fixed issues from patchwork checks.
- netif_tx_lock for one-step timestamping packet sending.
Changes for v3:
- Used system workqueue.
- Set bit lock when transmitted one-step packet, and scheduled
work when completed. The worker cleared the bit lock, and
transmitted one skb in skb queue if has, instead of a loop.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch is to add support for PTP Sync packet one-step timestamping.
Since ENETC single-step register has to be configured dynamically per
packet for correctionField offeset and UDP checksum update, current
one-step timestamping packet has to be sent only when the last one
completes transmitting on hardware. So, on the TX, this patch handles
one-step timestamping packet as below:
- Trasmit packet immediately if no other one in transfer, or queue to
skb queue if there is already one in transfer.
The test_and_set_bit_lock() is used here to lock and check state.
- Start a work when complete transfer on hardware, to release the bit
lock and to send one skb in skb queue if has.
And the configuration for one-step timestamping on ENETC before
transmitting is,
- Set one-step timestamping flag in extension BD.
- Write 30 bits current timestamp in tstamp field of extension BD.
- Update PTP Sync packet originTimestamp field with current timestamp.
- Configure single-step register for correctionField offeset and UDP
checksum update.
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Reviewed-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Mark TX timestamp type per skb on skb->cb[0], instead of
global variable for all skbs. This is a preparation for
one step timestamp support.
For one-step timestamping enablement, there will be both
one-step and two-step PTP messages to transfer. And a skb
queue is needed for one-step PTP messages making sure
start to send current message only after the last one
completed on hardware. (ENETC single-step register has to
be dynamically configured per message.) So, marking TX
timestamp type per skb is required.
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Reviewed-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Lijun Pan says:
====================
ibmvnic: improve error printing
Patch 1 prints reset reason as a string.
Patch 2 prints adapter state as a string.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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The adapter state can be added or deleted over different versions
of the source code. Print a string instead of a number.
Signed-off-by: Lijun Pan <lijunp213@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The reset reason can be added or deleted over different versions
of the source code. Print a string instead of a number.
Signed-off-by: Lijun Pan <lijunp213@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Commit e704f0434ea6 ("ibmvnic: Remove debugfs support") did not
clean up everything. Remove the remaining code.
Signed-off-by: Lijun Pan <lijunp213@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Jonathon Reinhart says:
====================
Ensuring net sysctl isolation
This patchset is the result of an audit of /proc/sys/net to prove that
it is safe to be mouted read-write in a container when a net namespace
is in use. See [1].
The first commit adds code to detect sysctls which are not netns-safe,
and can "leak" changes to other net namespaces.
My manual audit found, and the above feature confirmed, that there are
two nf_conntrack sysctls which are in fact not netns-safe.
I considered sending the latter to netfilter-devel, but I think it's
better to have both together on net-next: Adding only the former causes
undesirable warnings in the kernel log.
[1]: https://github.com/opencontainers/runc/issues/2826
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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These sysctls point to global variables:
- NF_SYSCTL_CT_MAX (&nf_conntrack_max)
- NF_SYSCTL_CT_EXPECT_MAX (&nf_ct_expect_max)
- NF_SYSCTL_CT_BUCKETS (&nf_conntrack_htable_size_user)
Because their data pointers are not updated to point to per-netns
structures, they must be marked read-only in a non-init_net ns.
Otherwise, changes in any net namespace are reflected in (leaked into)
all other net namespaces. This problem has existed since the
introduction of net namespaces.
The current logic marks them read-only only if the net namespace is
owned by an unprivileged user (other than init_user_ns).
Commit d0febd81ae77 ("netfilter: conntrack: re-visit sysctls in
unprivileged namespaces") "exposes all sysctls even if the namespace is
unpriviliged." Since we need to mark them readonly in any case, we can
forego the unprivileged user check altogether.
Fixes: d0febd81ae77 ("netfilter: conntrack: re-visit sysctls in unprivileged namespaces")
Signed-off-by: Jonathon Reinhart <Jonathon.Reinhart@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This adds an ensure_safe_net_sysctl() check during register_net_sysctl()
to validate that sysctl table entries for a non-init_net netns are
sufficiently isolated. To be netns-safe, an entry must adhere to at
least (and usually exactly) one of these rules:
1. It is marked read-only inside the netns.
2. Its data pointer does not point to kernel/module global data.
An entry which fails both of these checks is indicative of a bug,
whereby a child netns can affect global net sysctl values.
If such an entry is found, this code will issue a warning to the kernel
log, and force the entry to be read-only to prevent a leak.
To test, simply create a new netns:
$ sudo ip netns add dummy
As it sits now, this patch will WARN for two sysctls which will be
addressed in a subsequent patch:
- /proc/sys/net/netfilter/nf_conntrack_max
- /proc/sys/net/netfilter/nf_conntrack_expect_max
Signed-off-by: Jonathon Reinhart <Jonathon.Reinhart@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In many places,first assign a value to a variable and then return
the variable. which is redundant, we should directly return the value.
in pn533_rf_field funciton,return rc also in the if statement, so we
use return 0 to replace the last return rc.
Signed-off-by: wengjianfeng <wengjianfeng@yulong.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Michael Chan says:
====================
bnxt_en: Error recovery fixes.
This series adds some fixes and enhancements to the error recovery
logic. The health register logic is improved and we also add missing
code to free and re-create VF representors in the firmware after
error recovery.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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During firmware recovery, VF-Rep configuration in the firmware is lost.
Fix it by freeing and (re)allocating VF-Reps in FW at relevant points
during the error recovery process.
Signed-off-by: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add a new helper function __bnxt_free_one_vf_rep() to free one VF rep.
We also reintialize the VF rep fields to proper initial values so that
the function can be used without freeing the VF rep data structure. This
will be used in subsequent patches to free and recreate VF reps after
error recovery.
Reviewed-by: Edwin Peer <edwin.peer@broadcom.com>
Reviewed-by: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add a new function bnxt_alloc_vf_rep() to allocate a VF representor.
This function will be needed in subsequent patches to recreate the
VF reps after error recovery.
Signed-off-by: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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After probe is successful, interface may not be bought up in all
the cases and health register mapping could be invalid if firmware
undergoes reset. Fix it by invalidating the health register at the
end of probe. It will be remapped during ifup.
Fixes: 43a440c4007b ("bnxt_en: Improve the status_reliable flag in bp->fw_health.")
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The retry loop in bnxt_try_recover_fw() should not abort when the
health register value is 0. It is a valid value that indicates the
firmware is booting up.
Fixes: 861aae786f2f ("bnxt_en: Enhance retry of the first message to the firmware.")
Reviewed-by: Edwin Peer <edwin.peer@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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There is a comment spelling mistake "interfarence" -> "interference" in
function parse_nla_action(). Fix it.
Signed-off-by: Andrea Mayer <andrea.mayer@uniroma2.it>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The reset_prepare and reset_done calls have a null pointer check
on ae_dev however ae_dev is being dereferenced via the call to
ns3_is_phys_func with the ae->pdev argument. Fix this by performing
a null pointer check on ae_dev and hence short-circuiting the
dereference to ae_dev on the call to ns3_is_phys_func.
Addresses-Coverity: ("Dereference before null check")
Fixes: 715c58e94f0d ("net: hns3: add suspend and resume pm_ops")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The shifting of the u8 integers rq->caching by 26 bits to
the left will be promoted to a 32 bit signed int and then
sign-extended to a u64. In the event that rq->caching is
greater than 0x1f then all then all the upper 32 bits of
the u64 end up as also being set because of the int
sign-extension. Fix this by casting the u8 values to a
u64 before the 26 bit left shift.
Addresses-Coverity: ("Unintended sign extension")
Fixes: 4863dea3fab0 ("net: Adding support for Cavium ThunderX network controller")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The shifting of the u8 integers f->fs.nat_lip[] by 24 bits to
the left will be promoted to a 32 bit signed int and then
sign-extended to a u64. In the event that the top bit of the u8
is set then all then all the upper 32 bits of the u64 end up as
also being set because of the sign-extension. Fix this by
casting the u8 values to a u64 before the 24 bit left shift.
Addresses-Coverity: ("Unintended sign extension")
Fixes: 12b276fbf6e0 ("cxgb4: add support to create hash filters")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Alex Elder says:
====================
net: ipa: support two more platforms
This series adds IPA support for two more Qualcomm SoCs.
The first patch updates the DT binding to add compatible strings.
The second temporarily disables checksum offload support for IPA
version 4.5 and above. Changes are required to the RMNet driver
to support the "inline" checksum offload used for IPA v4.5+, and
once those are present this capability will be enabled for IPA.
The third and fourth patches add configuration data for IPA versions
4.5 (used for the SDX55 SoC) and 4.11 (used for the SD7280 SoC).
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add support for the SC7280 SoC, which includes IPA version 4.11.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add support for the SDX55 SoC, which includes IPA version 4.5.
Starting with IPA v4.5, a few of the memory regions have a different
number of "canary" values; update comments in the where the region
identifers are defined to accurately reflect that.
I'll note three differences in SDX55 versus the other two existing
platforms (SDM845 and SC7180):
- SDX55 uses a 32-bit Linux kernel
- SDX55 has four interconnects rather than three
- SDX55 uses IPA v4.5, which uses inline checksum offload
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Checksum offload for IPA v4.5+ is implemented differently, using
"inline" offload (which uses a common header format for both upload
and download offload).
The IPA hardware must be programmed to enable MAP checksum offload,
but the RMNet driver is responsible for interpreting checksum
metadata supplied with messages.
Currently, the RMNet driver does not support inline checksum offload.
This support is imminent, but until it is available, do not allow
newer versions of IPA to specify checksum offload for endpoints.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add existing supported platform "qcom,sc7180-ipa" to the set of IPA
compatible strings. Also add newly-supported "qcom,sdx55-ipa",
"qcom,sc7280-ipa".
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch adds missing MODULE_DEVICE_TABLE definition which generates
correct modalias for automatic loading of this driver when it is built
as an external module.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Qiheng Lin <linqiheng@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Paolo Abeni says:
====================
veth: allow GRO even without XDP
This series allows the user-space to enable GRO/NAPI on a veth
device even without attaching an XDP program.
It does not change the default veth behavior (no NAPI, no GRO),
except that the GRO feature bit on top of this series will be
effectively off by default on veth devices. Note that currently
the GRO bit is on by default, but GRO never takes place in
absence of XDP.
On top of this series, setting the GRO feature bit enables NAPI
and allows the GRO to take place. The TSO features on the peer
device are preserved.
The main goal is improving UDP forwarding performances for
containers in a typical virtual network setup:
(container) veth -> veth peer -> bridge/ovs -> vxlan -> NIC
Enabling the NAPI threaded mode, GRO the NETIF_F_GRO_UDP_FWD
feature on the veth peer improves the UDP stream performance
with not void netfilter configuration by 2x factor with no
measurable overhead for TCP traffic: some heuristic ensures
that TCP will not go through the additional NAPI/GRO layer.
Some self-tests are added to check the expected behavior in
the default configuration, with XDP and with plain GRO enabled.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add some basic veth tests, that verify the expected flags and
aggregation with different setups (default, xdp, etc...)
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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After the previous patch, when enabling GRO, locally generated
TCP traffic experiences some measurable overhead, as it traverses
the GRO engine without any chance of aggregation.
This change refine the NAPI receive path admission test, to avoid
unnecessary GRO overhead in most scenarios, when GRO is enabled
on a veth peer.
Only skbs that are eligible for aggregation enter the GRO layer,
the others will go through the traditional receive path.
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Currently the veth device has the GRO feature bit set, even if
no GRO aggregation is possible with the default configuration,
as the veth device does not hook into the GRO engine.
Flipping the GRO feature bit from user-space is a no-op, unless
XDP is enabled. In such scenario GRO could actually take place, but
TSO is forced to off on the peer device.
This change allow user-space to really control the GRO feature, with
no need for an XDP program.
The GRO feature bit is now cleared by default - so that there are no
user-visible behavior changes with the default configuration.
When the GRO bit is set, the per-queue NAPI instances are initialized
and registered. On xmit, when napi instances are available, we try
to use them.
Some additional checks are in place to ensure we initialize/delete NAPIs
only when needed in case of overlapping XDP and GRO configuration
changes.
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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As described by commit 9c4c325252c5 ("skbuff: preserve sock
reference when scrubbing the skb."), orphaning a skb
in the TX path will cause OoO.
Let's use skb_orphan_partial() instead of skb_orphan(), so
that we keep the sk around for queue's selection sake and we
still avoid the problem fixed with commit 4bf9ffa0fb57 ("veth:
Orphan skb before GRO")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Moshe Shemesh says:
====================
ethtool: Extend module EEPROM dump API
Ethtool supports module EEPROM dumps via the `ethtool -m <dev>` command.
But in current state its functionality is limited - offset and length
parameters, which are used to specify a linear desired region of EEPROM
data to dump, is not enough, considering emergence of complex module
EEPROM layouts such as CMIS 4.0.
Moreover, CMIS 4.0 extends the amount of pages that may be accessible by
introducing another parameter for page addressing - banks.
Besides, currently module EEPROM is represented as a chunk of
concatenated pages, where lower 128 bytes of all pages, except page 00h,
are omitted. Offset and length are used to address parts of this fake
linear memory. But in practice drivers, which implement
get_module_info() and get_module_eeprom() ethtool ops still calculate
page number and set I2C address on their own.
This series tackles these issues by adding ethtool op, which allows to
pass page number, bank number and I2C address in addition to offset and
length parameters to the driver, adds corresponding netlink
infrastructure and implements the new interface in mlx5 driver.
This allows to extend userspace 'ethtool -m' CLI by adding new
parameters - page, bank and i2c. New command line format:
ethtool -m <dev> [hex on|off] [raw on|off] [offset N] [length N] [page N] [bank N] [i2c N]
The consequence of this series is a possibility to dump arbitrary EEPROM
page at a time, in contrast to dumps of concatenated pages. Therefore,
offset and length change their semantics and may be used only to specify
a part of data within half page boundary, which size is currently limited
to 128 bytes.
As for drivers that support legacy get_module_info() and
get_module_eeprom() pair, the series addresses it by implementing a
fallback mechanism. As mentioned earlier, such drivers derive a page
number from 'global' offset, so this can be done vice versa without
their involvement thanks to standardization. If kernel netlink handler
of 'ethtool -m' command detects that new ethtool op is not supported by
the driver, it calculates offset from given page number and page offset
and calls old ndos, if they are available.
====================
\Signed-off-by: David S. Miller <davem@davemloft.net>
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If the device has a sfp bus attached, call its
sfp_get_module_eeprom_by_page() function, otherwise use the ethtool op
for the device. This follows how the IOCTL works.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The new netlink API for reading SFP data requires a new op to be
implemented. The idea of the new netlink SFP code is that userspace is
responsible to parsing the EEPROM data and requesting pages, rather
than have the kernel decide what pages are interesting and returning
them. This allows greater flexibility for newer formats.
Currently the generic SFP code only supports simple SFPs. Allow i2c
address 0x50 and 0x51 to be accessed with page and bank must always be
0. This interface will later be extended when for example QSFP support
is added.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Vladyslav Tarasiuk <vladyslavt@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In case netlink get_module_eeprom_by_page() callback is not implemented
by the driver, try to call old get_module_info() and get_module_eeprom()
pair. Recalculate parameters to get_module_eeprom() offset and len using
page number and their sizes. Return error if this can't be done.
Signed-off-by: Vladyslav Tarasiuk <vladyslavt@nvidia.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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There are two ways to retrieve information from SFP EEPROMs. Many
devices make use of the common code, and assign the sfp_bus pointer in
the netdev to point to the bus holding the SFP device. Some MAC
drivers directly implement ops in there ethool structure.
Export within net/ethtool the two helpers used to call these methods,
so that they can also be used in the new netlink code.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Allow the driver to recognise DSFP transceiver module ID and therefore
allow its EEPROM dumps using ethtool.
Signed-off-by: Vladyslav Tarasiuk <vladyslavt@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Implement ethtool_ops::get_module_eeprom_by_page() to enable
support of new SFP standards.
Signed-off-by: Vladyslav Tarasiuk <vladyslavt@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Prepare for ethtool_ops::get_module_eeprom_data() implementation by
extracting common part of mlx5_query_module_eeprom() into a separate
function.
Signed-off-by: Vladyslav Tarasiuk <vladyslavt@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Define get_module_eeprom_by_page() ethtool callback and implement
netlink infrastructure.
get_module_eeprom_by_page() allows network drivers to dump a part of
module's EEPROM specified by page and bank numbers along with offset and
length. It is effectively a netlink replacement for get_module_info()
and get_module_eeprom() pair, which is needed due to emergence of
complex non-linear EEPROM layouts.
Signed-off-by: Vladyslav Tarasiuk <vladyslavt@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Alex Elder says:
====================
net: ipa: a few small fixes
This series implements some minor bug fixes or improvements.
The first patch removes an apparently unnecessary restriction, which
results in an error on a 32-bit ARM build.
The second makes a definition used for SDM845 match what is used in
the downstream code.
The third just ensures two netdev pointers are only non-null when
valid.
The fourth simplifies a little code, knowing that a called function
never returns an error.
The fifth and sixth just remove some empty/place holder functions.
And the last patch fixes a comment, makes a function private, and
removes an unnecessary double-negation of a Boolean variable. This
patch produces a warning from checkpatch, indicating that a pair of
parentheses is unnecessary. I agree with that advice, but it
conflicts with a suggestion from the compiler. I left the "problem"
in place to avoid the compiler warning.
====================
Link: https://lore.kernel.org/r/20210409180722.1176868-1-elder@linaro.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Some time ago changes were made to stop referring to clearing the
hardware pipeline as a "tag process." Fix a comment to use the
newer terminology.
Get rid of a pointless double-negation of the Boolean toward_ipa
flag in ipa_endpoint_config().
make ipa_endpoint_exit_one() private; it's only referenced inside
"ipa_endpoint.c".
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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There are place holder functions in the GSI code that do nothing.
Remove these, knowing we can add something back in their place if
they're really needed someday.
Some of these are inverse functions (such as teardown to match setup).
Explicitly comment that there is no inverse in these cases.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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There are place holder functions in the IPA code that do nothing.
For the most part these are inverse functions, for example, once the
routing or filter tables are set up there is no need to perform any
matching teardown activity at shutdown, or in the case of an error.
These can be safely removed, resulting in some code simplification.
Add comments in these spots making it explicit that there is no
inverse.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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In ipa_modem_stop(), if the modem netdev pointer is non-null we call
ipa_stop(). We check for an error and if one is returned we handle
it. But ipa_stop() never returns an error, so this extra handling
is unnecessary. Simplify the code in ipa_modem_stop() based on the
knowledge no error handling is needed at this spot.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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In ipa_modem_start(), we set endpoint netdev pointers before the
network device is registered. If registration fails, we don't undo
those assignments. Instead, wait to assign the netdev pointer until
after registration succeeds.
Set these endpoint netdev pointers to NULL in ipa_modem_stop()
before unregistering the network device.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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