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Enable skb_tx_timestamp in hyperv netvsc.
Signed-off-by: Simon Xiao <sixiao@microsoft.com>
Reviewed-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Interrupts registered by RoCE driver are not unregistered when
msix interrupts are disabled during error recovery causing a
crash. Detach the adapter instance from RoCE driver when error
is detected to complete the cleanup. Attach the driver again after
the adapter is recovered from error.
Signed-off-by: Padmanabh Ratnakar <padmanabh.ratnakar@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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As requested by Rob Herring on patch
https://patchwork.ozlabs.org/patch/580862/.
This is a new property that it's still in net-next and has never been
used in production, so we are not breaking anything with the
incompatible binding change.
Signed-off-by: Sergio Prado <sergio.prado@e-labworks.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Bump.
Change-ID: Ifa19aadaa892ad103f1b96fe2361fa690912c6a3
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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If we reset a VF, its VSI goes away, and it gets a new one. So don't
hang on to the now-stale local VSI pointer. It just leads to suffering
and kernel panics.
Change-ID: Ia8823b4e85893e95e963acee284968022b29177a
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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We need to suspend scheduling or any pending service task during driver
unload process, so that new task will not be scheduled. This patch sets
the suspend flag bit during reload which avoids service task execution.
Change-ID: I017c57b5d6656564556e3c5387da671369a572ac
Signed-off-by: Pandi Kumar Maharajan <pandi.maharajan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Use the new AdminQ functions for safely accessing the Rx control
registers that may be affected by heavy small packet traffic.
We can't use AdminQ calls in i40e_clear_hw() because the HW is being
initialized and the AdminQ is not alive. We recently added an AQ
related replacement for reading PFLAN_QALLOC, and this patch puts
back the original register read.
Change-ID: Ib027168c954a5733299aa3a4ce5f8218c6bb5636
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Use the new AdminQ functions for safely accessing the Rx control
registers that may be affected by heavy small packet traffic.
Change-ID: Ibb00983e8dcba71f4b760222a609a5fcaa726f18
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Add the new opcodes and struct used for asking the firmware to update Rx
control registers that need extra care when being accessed while under
heavy traffic - e.g. sustained 64byte packets at line rate on all ports.
The firmware will take extra steps to be sure the register accesses
are successful.
The registers involved are:
PFQF_CTL_0
PFQF_HENA
PFQF_FDALLOC
PFQF_HREGION
PFLAN_QALLOC
VPQF_CTL
VFQF_HENA
VFQF_HREGION
VSIQF_CTL
VSILAN_QBASE
VSILAN_QTABLE
VSIQF_TCREGION
PFQF_HKEY
VFQF_HKEY
PRTQF_CTL_0
GLFCOE_RCTL
GLFCOE_RSOF
GLQF_CTL
GLQF_SWAP
GLQF_HASH_MSK
GLQF_HASH_INSET
GLQF_HSYM
GLQF_FC_MSK
GLQF_FC_INSET
GLQF_FD_MSK
PRTQF_FD_INSET
PRTQF_FD_FLXINSET
PRTQF_FD_MSK
Change-ID: I56c8144000da66ad99f68948d8a184b2ec2aeb3e
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Return from i40e_vsi_reinit_setup() if vsi param is NULL.
This makes this code consistent with all the other code that
checks for NULL before using one of the VSI pointers accessed
with an indexed variable. (Indexed VSI pointers are
intentionally set to NULL in i40e_vsi_clear() and
i40e_remove().
Change-ID: I3bc8b909c70fd2439334eeae994d151f61480985
Signed-off-by: John Underwood <johnx.underwood@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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This patch adds 7 new register definitions for programming the
parser, flow director and RSS blocks in the HW.
Change-ID: I31e76673125275f3c69a14c646361919d04dc987
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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This fixes an issue where a previously removed message
has returned. Changing the message type to dev_dbg
leaves the info, if desired, but takes it out of normal
everyday usage. Also changed call to only provide port
data when its valid and not when its not (delete case).
Change-ID: Ief6f33b915f6364c24fa8e5789c2fc3168b5e2ed
Signed-off-by: Carolyn Wyborny <carolyn.wyborny@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Just like Tx queues don't wait for Rx queues to be disabled before
DCB has been reconfigured.
Check the queues are disabled only after the DCB configuration has
been applied to the VSI(s) managed by the PF driver.
In case of any timeout issue a PF reset to recover.
Change-ID: Ic51e94c25baf9a5480cee983f35d15575a88642c
Signed-off-by: Neerav Parikh <neerav.parikh@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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When linking with particular PHY types (ex: copper PHY), the amount of
time it takes for the GLGEN_RSTAT_DEVSTATE to be set increases greatly,
which can lead to a timeout and failure to load the driver.
Change-ID: If02be0dfcd7c57fdde2d5c81cd63651260cd2029
Signed-off-by: Kevin Scott <kevin.c.scott@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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This patch fixes a problem where the ethtool identify adapter
functionality did not work for some copper PHY's. Without this
patch, the blink led functionality fails on some parts. This
patch adds PHY write code to blink led's on parts where this
functionality is contained in the PHY rather than the MAC.
Change-ID: Iee7b3453f61d5ffd0b3d03f720ee4f17f919fcc2
Signed-off-by: Carolyn Wyborny <carolyn.wyborny@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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This patch adds functions to blink led on devices using
10GBaseT PHY since MAC registers used in other designs
do not work in this device configuration.
Change-ID: Id4b88c93c649fd2b88073a00b42867a77c761ca3
Signed-off-by: Carolyn Wyborny <carolyn.wyborny@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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On all of the other Intel drivers we place checksum close to TSO as they
have a significant amount in common and it can help to reduce the decision
tree for how to handle the frame as the first check in TSO is to see if
checksumming is offloaded, and if it is not we can skip _BOTH_ TSO and Tx
checksum offload based on a single check.
Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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This patch is meant to rewrite the logic for how we determine if we can
transmit the frame or if it needs to be linearized.
The previous code for this function was using a mix of division and modulus
division as a part of computing if we need to take the slow path. Instead
I have replaced this by simply working with a sliding window which will
tell us if the frame would be capable of causing a single packet to span
several descriptors.
The logic for the scan is fairly simple. If any given group of 6 fragments
is less than gso_size - 1 then it is possible for us to have one byte
coming out of the first fragment, 6 fragments, and one or more bytes coming
out of the last fragment. This gives us a total of 8 fragments
which exceeds what we can allow so we send such frames to be linearized.
Arguably the use of modulus might be more exact as the approach I propose
may generate some false positives. However the likelihood of us taking much
of a hit for those false positives is fairly low, and I would rather not
add more overhead in the case where we are receiving a frame composed of 4K
pages.
Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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In an upcoming patch I would like to have access to the descriptor count
used for the data portion of the frame. For this reason I am splitting up
the descriptor count function from the function that stops the ring.
Also in order to try and reduce unnecessary duplication of code I am moving
the slow-path portions of the code out of being inline calls so that we can
just jump to them and process them instead of having to build them into
each function that calls them.
Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue
Jeff Kirsher says:
====================
40GbE Intel Wired LAN Driver Updates 2016-02-18
This series contains updates to i40e and i40evf only.
Alex Duyck provides all the patches in the series to update and fix the
drivers. Fixed the driver to drop the outer checksum offload on UDP
tunnels, since the issue is that the upper levels of the stack never
requested such an offload and it results in possible errors. Updates the
TSO function to just use u64 values, so we do not have to end up casting
u32 values. In the TSO path, factored out the L4 header offsets allowing
us to ignore the L4 header offsets when dealing with the L3 checksum and
length update. Consolidates all of the spots where we were updating
either the TCP or IP checksums in the TSO and checksum path into the TSO
function. Fixed two issues by adding support for IPv4 encapsulated in
IPv6, first issue was the fact that iphdr(skb)->protocol was being used to
test for the outer transport protocol which breaks IPv6 support. The second
was that we cleared the flag for v4 going to v6, but we did not take care
of txflags going the other way. Added support for IPv6 extension headers
in setting up the Tx checksum. Added exception handling to the Tx
checksum path so that we can handle cases of TSO where the frame is bad,
or Tx checksum where we did not recognize a protocol. Fixed a number of
issues to make certain that we are using the correct protocols when
parsing both the inner and outer headers of a frame that is mixed between
IPv4 and IPv6 for inner and outer. Updated the feature flags to reflect
the newly enabled/added features.
Sorry, no witty patch descriptions this time around, probably should
let Mitch help in writing patch descriptions for Alex. :-)
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Commit e5d3a51cefbb ("bnx2x: extend DCBx support") was missing HSI
changes for big-endian machine, breaking compilation on such
platforms.
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch updates the code for determining the L4 protocol and L3 header
length so that when IPv6 extension headers are being used we can determine
the offset and type of the L4 protocol.
Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Recent changes should have enabled support for IPv6 based tunnels and
support for TSO with outer UDP checksums. As such we can update the
feature flags to reflect that.
In addition we can clean-up the flags that aren't needed such as SCTP and
RXCSUM since having the bits there doesn't add any value.
I also found one spot where we were setting the same flag twice. It looks
like it was probably a git merge error that resulted in the line being
duplicated. As such I have dropped it in this patch.
Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Acked-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Recent changes should have enabled support for IPv6 based tunnels and
support for TSO with outer UDP checksums. As such we can update the
feature flags to reflect that.
In addition we can clean-up the flags that aren't needed such as SCTP and
RXCSUM since having the bits there doesn't add any value.
Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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All of the documentation in the datasheets for the XL710 do not call out
any reason to exclude support for IPv6 based tunnels. As such I am
dropping the code that was excluding these tunnel types from having their
port numbers recognized. This way we can take advantage of things such as
checksum offload for inner headers over IPv6 based VXLAN or GENEVE
tunnels.
Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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This patch contains a number of fixes to make certain that we are using
the correct protocols when parsing both the inner and outer headers of a
frame that is mixed between IPv4 and IPv6 for inner and outer.
Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Acked-by: Kiran Patil <kiran.patil@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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The XL722 has support for providing the outer UDP tunnel checksum on
transmits. Make use of this feature to support segmenting UDP tunnels with
outer checksums enabled.
Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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This is mostly a minor clean-up for the Rx checksum path in order to avoid
some of the unnecessary conditional checks that were being applied.
Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Device would start receiving only vlan-tagged traffic with tags matching
that of one of the configured vlan IDs, unless:
- Device is expliicly placed in PROMISC mode.
- Device exhausts its vlan filter credits.
Signed-off-by: Sudarsana Reddy Kalluru <sudarsana.kalluru@qlogic.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Today, interfaces are working in vlan-promisc mode; But once
vlan filtering offloaded would be supported, we'll need a method to
control it directly [e.g., when setting device to PROMISC, or when
running out of vlan credits].
This adds the necessary API for L2 client to manually choose whether to
accept all vlans or only those for which filters were configured.
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Files in sysfs are created using the name from the phy_driver struct,
when two names are the same we may get a duplicate filename warning,
fix this.
Reported-by: kernel test robot <ying.huang@linux.intel.com>
Signed-off-by: Andrew F. Davis <afd@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Part of skb_scrub_packet was open coded in iptunnel_pull_header. Let it call
skb_scrub_packet directly instead.
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This is in preparation for iptunnel_pull_header calling skb_scrub_packet.
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This is in preparation for iptunnel_pull_header calling skb_scrub_packet.
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Similarly to the existing vxlan_get_sk_family.
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add exception handling to the Tx checksum path so that we can handle cases
of TSO where the frame is bad, or Tx checksum where we didn't recognize a
protocol
Drop I40E_TX_FLAGS_CSUM as it is unused, move the CHECKSUM_PARTIAL check
into the function itself so that we can decrease indent.
Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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This patch defers writing to the Tx descriptor bits until we know we have
successfully completed a given operation. So for example we defer updating
the tunnelling portion of the context descriptor until we have fully
identified the type.
The advantage to this approach is that we can assemble values as we go
instead of having to try and kludge everything together all at once. As a
result we can significantly clean up the tunneling configuration for
instance as we can just do a pointer walk and do the math for the distance
between each set of points.
Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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The tun_id field in struct ip_tunnel_key is __be64, not __be32. We need to
convert the vni to tun_id correctly.
Fixes: 54bfd872bf16 ("vxlan: keep flags and vni in network byte order")
Reported-by: Paolo Abeni <pabeni@redhat.com>
Tested-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Acked-by: Thadeu Lima de Souza Cascardo <cascardo@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch adds support for IPv6 extension headers in setting up the Tx
checksum. Without this patch extension headers would cause IPv6 traffic to
fail as the transport protocol could not be identified.
Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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This patch fixes two issues. First was the fact that iphdr(skb)->protocl
was being used to test for the outer transport protocol. This completely
breaks IPv6 support. Second was the fact that we cleared the flag for v4
going to v6, but we didn't take care of txflags going the other way. As
such we would have the v6 flag still set even if the inner header was v4.
Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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The Tx checksum path was maintaining a set of 3 pointers and two lengths in
order to prepare the packet for being checksummed. The thing is we only
really needed 2 pointers, and the lengths that were being maintained can
easily be computed.
As such we can replace the IPv4 and IPv6 header pointers with one single
union that represents both, or a generic pointer to the start of the
network header. For the L4 headers we can do the same with TCP and a
generic pointer to the start of the transport header. The length of the
TCP header is obtained by simply multiplying doff by 4, and the network
header length can be obtained by subtracting the network header pointer
from the transport header pointer.
While I was at it I renamed l4_hdr to l4_proto to make it a bit more clear
and less likely to be confused with l4.hdr which is the transport header
pointer.
Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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This patch goes through and pulls all of the spots where we were updating
either the TCP or IP checksums in the TSO and checksum path into the TSO
function. The general idea here is that we should only be updating the
header after we verify we have completed a skb_cow_head check to verify the
head is writable.
One other advantage to doing this is that it makes things much more
obvious. For example, in the case of IPv6 there was one spot where the
offset of the IPv4 header checksum was being updated which is obviously
incorrect.
Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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This patch makes it so that the L4 header offsets and such can be ignored
when dealing with the L3 checksum and length update. This is done making
use of two things.
First we can just use the offset from the L4 header to the start of the
packet to determine the L4 offset, and from that we can then make use of
the data offset to determine the full length of the headers.
As far as adjusting the checksum to remove the length we can simply add the
inverse of the length instead of having to recompute the entire
pseudo-header without the length. In the case of an IPv6 header this
should be significantly cheaper since we can make use of a value we already
needed instead of having to read the source and destination address out of
the packet.
Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Instead of casing u32 values to u64 it makes more sense to just start out
with u64 values in the first place. This way we don't need to create a
mess with all of the casts needed to populate a 64b value.
Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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The i40e and i40evf drivers contained code for inserting an outer checksum
on UDP tunnels. The issue however is that the upper levels of the stack
never requested such an offload and it results in possible errors.
In addition the same logic was being applied to the Rx side where it was
attempting to validate the outer checksum, but the logic there was
incorrect in that it was testing for the resultant sum to be equal to the
header checksum instead of being equal to 0.
Since this code is so massively flawed, and doing things that we didn't ask
for it to do I am just dropping it, and will bring it back later to use as
an offload for SKB_GSO_UDP_TUNNEL_CSUM which can make use of such a
feature.
As far as the Rx feature I am dropping it completely since it would need to
be massively expanded and applied to IPv4 and IPv6 checksums for all parts,
not just the one that supports Tx checksum offload for the outer.
Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Add code to select SGMII-to-copper mode upon SGMII interface selection.
Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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divamnt stores a start_time at module init and uses it to calculate
elapsed time. The elapsed time, stored in secs and usecs, is part of
the trace data the driver maintains for the DIVA Server ISDN cards.
No change to the format of that time data is required.
To avoid overflow on 32-bit systems use ktime_get_ts64() to return
the elapsed monotonic time since system boot.
This is a change from real to monotonic time. Since the driver only
stores elapsed time, monotonic time is sufficient and more robust
against real time clock changes. These new monotonic values can be
more useful for debugging because they can be easily compared to
other monotonic timestamps.
Note elaspsed time values will now start at system boot time rather
than module load time, so they will differ slightly from previously
reported values.
Remove declaration and init of previously unused time constants:
start_sec, start_usec.
Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Bump.
Change-ID: Ie280dc67e37a1cf667c3469499a4fb90f4177b75
Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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