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git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux
Pull thermal framework fix from Daniel Lezcano:
"Fix NULL pointer access when the cooling device transition stats
table failed to allocate due to a big number of states (Manaf
Meethalavalappu Pallikunhi)"
* tag 'thermal-v5.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux:
thermal/core: Add NULL pointer check before using cooling device stats
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mlxsw: Allow 802.1d and .1ad VxLAN bridges to coexist on Spectrum>=2
Ido Schimmel says:
====================
This patchset allows user space to simultaneously configure both 802.1d
and 802.1ad VxLAN bridges on Spectrum-2 and later ASICs. 802.1ad VxLAN
bridges are still forbidden on Spectrum-1.
The reason for the current limitation is that up until now the EtherType
that was pushed to decapsulated VxLAN packets was a property of the
tunnel port, of which there is only one. This meant that a 802.1ad VxLAN
bridge could not be configured if the tunnel port was already configured
to push a 802.1q tag.
This patchset improves the situation by making two changes. First,
decapsulated packets are marked as having their EtherType decided by the
egress port. Second, local ports member in the bridge (e.g., swp1) are
configured to set the correct egress EtherType.
Patchset overview:
Patch #1 adds a register required for the first change
Patches #2-#3 add the register required for the second change and a
corresponding API
Patch #4 prepares the driver for the split in behavior between
Spectrum-1 and later ASICs
Patch #5 performs the two above mentioned changes to allow the driver to
support simultaneous 802.1ad and 802.1d VxLAN bridges on Spectrum-2 and
later ASICs
Patch #6 adds a selftest
Patch #7 removes a selftest that verified the limitation that was lifted
by this patchset
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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q_in_vni_veto.sh is not needed anymore because VxLAN with an 802.1ad
bridge and VxLAN with an 802.1d bridge can coexist.
Remove the test.
Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Configure VxLAN with an 802.1ad bridge and VxLAN with an 802.1d bridge
at the same time in same switch, verify that traffic passed as expected.
Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Currently only one EtherType can be configured for pushing in tunnels
because EtherType is configured using SPVID.et_vlan for tunnel port.
This behavior is forbidden by comparing mlxsw_sp_nve_config struct for
each new tunnel, the struct contains 'ethertype' field which means that
only one EtherType is legal at any given time. Remove 'ethertype' field to
allow creating VxLAN devices with different bridges.
To allow using several types of VxLAN bridges at the same time, the
EtherType should be determined at the egress port. This behavior is
achieved by setting SPVID to decide which EtherType to push at egress and
for each local_port which is member in 802.1ad bridge, set SPEVET.et_vlan
to ether_type1 (i.e., 0x88A8).
Use switchdev_ops->init() to set different mlxsw_sp_bridge_ops for
different ASICs in order to be able to split the behavior when port joins /
leaves an 802.1ad bridge in different ASICs.
Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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A subsequent patch will need to implement different set of operations
when a port joins / leaves an 802.1ad bridge, based on the ASIC type.
Prepare for this change by allowing to initialize the bridge module
based on the ASIC type via 'struct mlxsw_sp_switchdev_ops'.
Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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A subsequent patch will cause decapsulated packets to have their EtherType
determined by the egress port. Add mlxsw_sp_port_egress_ethtype_set() which
will be called when a port joins an 802.1ad bridge, so that it will set an
802.1ad EtherType on decapsulated packets transmitted through it, instead
of the default 802.1q EtherType.
Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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SPEVET configures which EtherType to push at egress for packets incoming
through a local port for which 'SPVID.egr_et_set' is set.
The next patches will use SPEVET to configure EtherType 0x88A8 and
0x8100 for local ports member in 802.1ad and 802.1q bridges,
respectively. This allows using dual VxLAN bridges (802.1d and 802.1ad at
the same time).
Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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SPVID.egr_et_set=1 means that when VLAN is pushed at ingress (for untagged
packets or for QinQ push mode) then the EtherType is decided at the egress
port.
The next patches will use this field for VxLAN devices (tunnel port) in
order to allow using dual VxLAN bridges (802.1d and 802.1ad at the same
time).
Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Álvaro Fernández Rojas says:
====================
net: dsa: b53: support legacy tags
Legacy Broadcom tags are needed for older switches.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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These tags are used on BCM5325, BCM5365 and BCM63xx switches.
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add support for legacy Broadcom tags, which are similar to DSA_TAG_PROTO_BRCM.
These tags are used on BCM5325, BCM5365 and BCM63xx switches.
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211
Johannes Berg says:
====================
First round of fixes for 5.12-rc:
* HE (802.11ax) elements can be extended, handle that
* fix locking in network namespace changes that was
broken due to the RTNL-redux work
* various other small fixes
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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s/procesing/processing/
s/comparations/comparisons/
Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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BCM63xx switches are present on bcm63xx and bmips devices.
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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According to Synopsis DesignWare EQoS Databook, the Clock Domain Cross
synchronization error is introduced tue to the clock(GMII Tx/Rx clock)
being different at the capture as compared to the PTP
clock(clk_ptp_ref_i) that is used to generate the time.
The CDC synchronization error is almost equal to 2 times the clock
period of the PTP clock(clk_ptp_ref_i).
On a Intel Tigerlake platform (with Marvell 88E2110 external PHY):
Before applying this patch (with CDC synchronization error):
ptp4l[64.044]: rms 8 max 13 freq +30877 +/- 11 delay 216 +/- 0
ptp4l[65.047]: rms 13 max 20 freq +30869 +/- 17 delay 213 +/- 0
ptp4l[66.050]: rms 12 max 20 freq +30857 +/- 11 delay 213 +/- 0
ptp4l[67.052]: rms 11 max 22 freq +30849 +/- 10 delay 215 +/- 0
ptp4l[68.055]: rms 10 max 16 freq +30853 +/- 13 delay 215 +/- 0
ptp4l[69.057]: rms 7 max 13 freq +30848 +/- 9 delay 216 +/- 0
ptp4l[70.060]: rms 8 max 13 freq +30846 +/- 10 delay 216 +/- 0
ptp4l[71.063]: rms 9 max 15 freq +30836 +/- 8 delay 218 +/- 0
After applying this patch (CDC syncrhonization error is taken care of):
ptp4l[61.516]: rms 773 max 824 freq +31526 +/- 158 delay 200 +/- 0
ptp4l[62.519]: rms 427 max 596 freq +31668 +/- 39 delay 198 +/- 0
ptp4l[63.522]: rms 113 max 206 freq +31482 +/- 57 delay 198 +/- 0
ptp4l[64.525]: rms 40 max 56 freq +31316 +/- 29 delay 200 +/- 0
ptp4l[65.528]: rms 47 max 56 freq +31255 +/- 17 delay 200 +/- 0
ptp4l[66.531]: rms 26 max 36 freq +31246 +/- 9 delay 200 +/- 0
ptp4l[67.534]: rms 12 max 18 freq +31254 +/- 12 delay 202 +/- 0
ptp4l[68.537]: rms 7 max 12 freq +31263 +/- 10 delay 202 +/- 0
Signed-off-by: Voon Weifeng <weifeng.voon@intel.com>
Signed-off-by: Wong Vee Khee <vee.khee.wong@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The ct_state validate should not only check the mask bit and also
check mask_bit & key_bit..
For the +new+est case example, The 'new' and 'est' bits should be
set in both state_mask and state flags. Or the -new-est case also
will be reject by kernel.
When Openvswitch with two flows
ct_state=+trk+new,action=commit,forward
ct_state=+trk+est,action=forward
A packet go through the kernel and the contrack state is invalid,
The ct_state will be +trk-inv. Upcall to the ovs-vswitchd, the
finally dp action will be drop with -new-est+trk.
Fixes: 1bcc51ac0731 ("net/sched: cls_flower: Reject invalid ct_state flags rules")
Fixes: 3aed8b63336c ("net/sched: cls_flower: validate ct_state for invalid and reply flags")
Signed-off-by: wenxu <wenxu@ucloud.cn>
Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Jon Maloy says:
====================
tipc: cleanups and simplifications
We do a number of cleanups and simplifications, especially regarding
call signatures in the binding table. This makes the code easier to
understand and serves as preparation for upcoming functional additions.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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We move some warning printouts to more strategic locations to avoid
duplicates and yield more detailed information about the reported
problem.
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Acked-by: Hoang Le <hoang.h.le@dektech.com.au>
Acked-by: Tung Nguyen <tung.q.nguyen@dektech.com.au>
Acked-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We reduce and localize the usage of the tipc_sub_xx() macros by adding a
corresponding member, with fields set in host-endian format, to struct
tipc_subscription.
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Acked-by: Hoang Le <hoang.h.le@dektech.com.au>
Acked-by: Tung Nguyen <tung.q.nguyen@dektech.com.au>
Acked-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The function tipc_report_overlap() is called from the binding table
with numerous parameters taken from an instance of struct publication.
A closer look reveals that it always is safe to send along a pointer
to the instance itself, and hence reduce the call signature. We do
that in this commit.
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Acked-by: Hoang Le <hoang.h.le@dektech.com.au>
Acked-by: Tung Nguyen <tung.q.nguyen@dektech.com.au>
Acked-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We reduce the signature of tipc_find_service() and
tipc_create_service(). The reason for doing this might not
be obvious, but we plan to let struct tipc_uaddr contain
information that is relevant for these functions in a later
commit.
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Acked-by: Hoang Le <hoang.h.le@dektech.com.au>
Acked-by: Tung Nguyen <tung.q.nguyen@dektech.com.au>
Acked-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We simplify the signatures of the functions tipc_service_create_range()
and tipc_service_find_range().
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Acked-by: Hoang Le <hoang.h.le@dektech.com.au>
Acked-by: Tung Nguyen <tung.q.nguyen@dektech.com.au>
Acked-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We reduce the signature of tipc_nametbl_lookup_group() by using a
struct tipc_uaddr pointer. This entails a couple of minor changes in the
functions tipc_send_group_mcast/anycast/unicast/bcast() in socket.c
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Acked-by: Hoang Le <hoang.h.le@dektech.com.au>
Acked-by: Tung Nguyen <tung.q.nguyen@dektech.com.au>
Acked-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We follow up the preceding commits by reducing the signature of
the function tipc_nametbl_lookup_mcast_nodes().
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Acked-by: Hoang Le <hoang.h.le@dektech.com.au>
Acked-by: Tung Nguyen <tung.q.nguyen@dektech.com.au>
Acked-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We reduce the signature of this function according to the same
principle as the preceding commits.
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Acked-by: Hoang Le <hoang.h.le@dektech.com.au>
Acked-by: Tung Nguyen <tung.q.nguyen@dektech.com.au>
Acked-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We simplify the signature if function tipc_nametbl_lookup_anycast(),
using address structures instead of discrete integers.
This also makes it possible to make some improvements to the functions
__tipc_sendmsg() in socket.c and tipc_msg_lookup_dest() in msg.c.
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Acked-by: Hoang Le <hoang.h.le@dektech.com.au>
Acked-by: Tung Nguyen <tung.q.nguyen@dektech.com.au>
Acked-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The binding table provides four different lookup functions, which
purpose is not obvious neither by their names nor by the (lack of)
descriptions.
We now give these functions names that better match their purposes,
and improve the comments that describe what they are doing.
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Acked-by: Hoang Le <hoang.h.le@dektech.com.au>
Acked-by: Tung Nguyen <tung.q.nguyen@dektech.com.au>
Acked-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Following the principles of the preceding commits, we reduce
the number of parameters passed along in tipc_sk_withdraw(),
tipc_nametbl_withdraw() and associated functions.
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Acked-by: Hoang Le <hoang.h.le@dektech.com.au>
Acked-by: Tung Nguyen <tung.q.nguyen@dektech.com.au>
Acked-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We simplify the call signatures for tipc_nametbl_insert_publ() and
tipc_publ_create() so that fewer parameters are passed around.
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Acked-by: Hoang Le <hoang.h.le@dektech.com.au>
Acked-by: Tung Nguyen <tung.q.nguyen@dektech.com.au>
Acked-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Using the new address structure tipc_uaddr, we simplify the signature
of function tipc_sk_publish() and tipc_namtbl_publish() so that fewer
parameters need to be passed around.
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Acked-by: Hoang Le <hoang.h.le@dektech.com.au>
Acked-by: Tung Nguyen <tung.q.nguyen@dektech.com.au>
Acked-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We introduce a simplified version of struct sockaddr_tipc, using
anonymous unions and structures. Apart from being nicer to work with,
this struct will come in handy when we in a later commit add another
address type.
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Acked-by: Hoang Le <hoang.h.le@dektech.com.au>
Acked-by: Tung Nguyen <tung.q.nguyen@dektech.com.au>
Acked-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We instantiate struct publication in tipc_nametbl_insert_publ()
instead of as currently in tipc_service_insert_publ(). This has the
advantage that we can pass a pointer to the publication struct to
the next call levels, instead of the numerous individual parameters
we pass on now. It also gives us a location to keep the contents of
the additional fields we will introduce in a later commit.
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Acked-by: Hoang Le <hoang.h.le@dektech.com.au>
Acked-by: Tung Nguyen <tung.q.nguyen@dektech.com.au>
Acked-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In a future commit we will introduce more members to struct publication.
In order to keep this structure comprehensible we now group some of
its current fields into the sub-structures where they really belong,
- A struct tipc_service_range for the functional address the publication
is representing.
- A struct tipc_socket_addr for the socket bound to that service range.
We also rename the stack variable 'publ' to just 'p' in a few places.
This is just as easy to understand in the given context, and keeps the
number of wrapped code lines to a minimum.
There are no functional changes in this commit.
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Acked-by: Hoang Le <hoang.h.le@dektech.com.au>
Acked-by: Tung Nguyen <tung.q.nguyen@dektech.com.au>
Acked-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Alexander Duyck says:
====================
ethtool: Factor out common code related to writing ethtool strings
This patch set is meant to be a cleanup and refactoring of common code bits
from several drivers. Specificlly a number of drivers engage in a pattern
where they will use some variant on an sprintf or memcpy to write a string
into the ethtool string array and then they will increment their pointer by
ETH_GSTRING_LEN.
Instead of having each driver implement this independently I am refactoring
the code so that we have one central function, ethtool_sprintf that does
all this and takes a double pointer to access the data, a formatted string
to print, and the variable arguments that are associated with the string.
Changes from v1:
Fixed usage of char ** vs unsigned char ** in hisilicon drivers
Changes from RFC:
Renamed ethtool_gsprintf to ethtool_sprintf
Fixed reverse xmas tree issue in patch 2
====================
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Update the ionic driver to make use of ethtool_sprintf. In addition add
separate functions for Tx/Rx stats strings in order to reduce the total
amount of indenting needed in the driver code.
Acked-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: Alexander Duyck <alexanderduyck@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Update the bnad_get_strings to make use of ethtool_sprintf and avoid
unnecessary line wrapping. To do this we invert the logic for the string
set test and instead exit immediately if we are not working with the stats
strings. In addition the function is broken up into subfunctions for each
area so that we can simply call ethtool_sprintf once for each string in a
given subsection.
Signed-off-by: Alexander Duyck <alexanderduyck@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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So this patch actually does 3 things.
First it removes a stray white space at the start of the variable
declaration in vmxnet3_get_strings.
Second it flips the logic for the string test so that we exit immediately
if we are not looking for the stats strings. Doing this we can avoid
unnecessary indentation and line wrapping.
Then finally it updates the code to use ethtool_sprintf rather than a
memcpy and pointer increment to write the ethtool strings.
Signed-off-by: Alexander Duyck <alexanderduyck@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Update the code to replace instances of snprintf and a pointer update with
just calling ethtool_sprintf.
Also replace the char pointer with a u8 pointer to avoid having to recast
the pointer type.
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Alexander Duyck <alexanderduyck@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Replace instances of sprintf or memcpy with a pointer update with
ethtool_sprintf.
Signed-off-by: Alexander Duyck <alexanderduyck@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Replace instances of snprintf or memcpy with a pointer update with
ethtool_sprintf.
Acked-by: Arthur Kiyanovski <akiyano@amazon.com>
Signed-off-by: Alexander Duyck <alexanderduyck@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Update the hisilicon drivers to make use of ethtool_sprintf. The general
idea is to reduce code size and overhead by replacing the repeated pattern
of string printf statements and ETH_STRING_LEN counter increments.
Signed-off-by: Alexander Duyck <alexanderduyck@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The nfp_pr_et function is nearly identical to ethtool_sprintf except for
the fact that it passes the pointer by value and as a return whereas
ethtool_sprintf passes it as a pointer.
Since they are so close just update nfp to make use of ethtool_sprintf
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: Alexander Duyck <alexanderduyck@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Update the Intel drivers to make use of ethtool_sprintf. The general idea
is to reduce code size and overhead by replacing the repeated pattern of
string printf statements and ETH_STRING_LEN counter increments.
Signed-off-by: Alexander Duyck <alexanderduyck@fb.com>
Acked-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add a function to handle the common pattern of printing a string into the
ethtool strings interface and incrementing the string pointer by the
ETH_GSTRING_LEN. Most of the drivers end up doing this and several have
implemented their own versions of this function so it would make sense to
consolidate on one implementation.
Signed-off-by: Alexander Duyck <alexanderduyck@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We were linearizing non-TSO skbs that had too many frags, but
we weren't checking number of frags on TSO skbs. This could
lead to a bad page reference when we received a TSO skb with
more frags than the Tx descriptor could support.
v2: use gso_segs rather than yet another division
don't rework the check on the nr_frags
Fixes: 0f3154e6bcb3 ("ionic: Add Tx and Rx handling")
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux
Saeed Mahameed says:
====================
mlx5-updates-2021-03-16
mlx5 uplink representor netdev persistence.
Before this patchset we used to have separate netdevs for Native NIC mode
and Switchdev mode (uplink representor netdev), meaning that if user
switches modes between Native to Switchdev and vice versa, the driver
would cleanup the current netdev representor and create a new one for the
new mode, such behavior created an administrative nightmare for users,
where users need to be aware of such loss of both data path and control
path configurations, e.g. netdev attributes and arp/route tables,
where the later is more painful.
A simple solution for this is not to replace the netdev in first place
and use a single netdev to serve the uplink/physical port whether it is
in switchdev mode or native mode.
We already have different HW profiles for each netdev mode, in this series
we just replace the HW profile on the fly and we keep the same netdev
attached.
Refactoring: Some refactoring has been made to overcome some technical
difficulties
1) The netdev is created with the maximum amount of tx/rx queues to serve
the two profiles.
2) Some ndos are not supported in some modes, so we added a mode check for
such cases, e.g legacy sriov ndos must be blocked in switchdev mode.
3) Some mlx5 netdev private attributes need to be moved out of profiles
and kept in a persistent place, where the netdev is created
e.g devlink port and other global HW resources
4) The netdev devlink port is now always registered with the switch id
Implementation: the last three patches implement the mechanism now as the
netdev can be shared.
5) Don't recreate the netdev on switchdev mode changes
6) Prevent changing switchdev mode when some netdev operations
are active, mostly when TC rules are being processed.
This is required since the netdev is kept registered while switchdev mode
can be changed.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Instead of having the mov32 with aux->alu_limit - 1 immediate, move this
operation to retrieve_ptr_limit() instead to simplify the logic and to
allow for subsequent sanity boundary checks inside retrieve_ptr_limit().
This avoids in future that at the time of the verifier masking rewrite
we'd run into an underflow which would not sign extend due to the nature
of mov32 instruction.
Signed-off-by: Piotr Krysiuk <piotras@gmail.com>
Co-developed-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
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retrieve_ptr_limit() computes the ptr_limit for registers with stack and
map_value type. ptr_limit is the size of the memory area that is still
valid / in-bounds from the point of the current position and direction
of the operation (add / sub). This size will later be used for masking
the operation such that attempting out-of-bounds access in the speculative
domain is redirected to remain within the bounds of the current map value.
When masking to the right the size is correct, however, when masking to
the left, the size is off-by-one which would lead to an incorrect mask
and thus incorrect arithmetic operation in the non-speculative domain.
Piotr found that if the resulting alu_limit value is zero, then the
BPF_MOV32_IMM() from the fixup_bpf_calls() rewrite will end up loading
0xffffffff into AX instead of sign-extending to the full 64 bit range,
and as a result, this allows abuse for executing speculatively out-of-
bounds loads against 4GB window of address space and thus extracting the
contents of kernel memory via side-channel.
Fixes: 979d63d50c0c ("bpf: prevent out of bounds speculation on pointer arithmetic")
Signed-off-by: Piotr Krysiuk <piotras@gmail.com>
Co-developed-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
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The purpose of this patch is to streamline error propagation and in particular
to propagate retrieve_ptr_limit() errors for pointer types that are not defining
a ptr_limit such that register-based alu ops against these types can be rejected.
The main rationale is that a gap has been identified by Piotr in the existing
protection against speculatively out-of-bounds loads, for example, in case of
ctx pointers, unprivileged programs can still perform pointer arithmetic. This
can be abused to execute speculatively out-of-bounds loads without restrictions
and thus extract contents of kernel memory.
Fix this by rejecting unprivileged programs that attempt any pointer arithmetic
on unprotected pointer types. The two affected ones are pointer to ctx as well
as pointer to map. Field access to a modified ctx' pointer is rejected at a
later point in time in the verifier, and 7c6967326267 ("bpf: Permit map_ptr
arithmetic with opcode add and offset 0") only relevant for root-only use cases.
Risk of unprivileged program breakage is considered very low.
Fixes: 7c6967326267 ("bpf: Permit map_ptr arithmetic with opcode add and offset 0")
Fixes: b2157399cc98 ("bpf: prevent out-of-bounds speculation")
Signed-off-by: Piotr Krysiuk <piotras@gmail.com>
Co-developed-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
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