Currently there is no limit to the number of VFs netdevsim can enable.
In a real systems this value exist and used by the driver.
Fore example, some features might need to consider this value when
allocating memory.

Expose max_vfs variable to debugfs as configurable resource. If are VFs
configured (num_vfs != 0) then changing of max_vfs not allowed.
Co-developed-by: NYuval Avnery <yuvalav@nvidia.com>
Signed-off-by: NYuval Avnery <yuvalav@nvidia.com>
Signed-off-by: NDmytro Linkin <dlinkin@nvidia.com>
Reviewed-by: NJiri Pirko <jiri@nvidia.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Simon Horman says:

====================
Introduce conntrack offloading to the nfp driver

Louis Peens says:

This is the first in a series of patches to offload conntrack
to the nfp. The approach followed is to flatten out three
different flow rules into a single offloaded flow. The three
different flows are:

1) The rule sending the packet to conntrack (pre_ct)
2) The rule matching on +trk+est after a packet has been through
   conntrack. (post_ct)
3) The rule received via callback from the netfilter (nft)

In order to offload a flow we need a combination of all three flows, but
they could be added/deleted at different times and in different order.

To solve this we save potential offloadable CT flows in the driver,
and every time we receive a callback we check against these saved flows
for valid merges. Once we have a valid combination of all three flows
this will be offloaded to the NFP. This is demonstrated in the diagram
below.

	+-------------+                      +----------+
	| pre_ct flow +--------+             | nft flow |
	+-------------+        v             +------+---+
	                  +----------+              |
	                  | tc_merge +--------+     |
	                  +----------+        v     v
	+--------------+       ^           +-------------+
	| post_ct flow +-------+       +---+nft_tc merge |
	+--------------+               |   +-------------+
	                               |
	                               |
	                               |
	                               v
	                        Offload to nfp

This series is only up to the point of the pre_ct and post_ct
merges into the tc_merge. Follow up series will continue
to add the nft flows and merging of these flows with the result
of the pre_ct and post_ct merged flows.

Changes since v2:
- nfp: flower-ct: add zone table entry when handling pre/post_ct flows
    Fixed another docstring. Should finally have the patch check
    environment properly configured now to avoid more of these.
- nfp: flower-ct: add tc merge functionality
    Fixed warning found by "kernel test robot <lkp@intel.com>"
    Added code comment explaining chain_index comparison

Changes since v1:
- nfp: flower-ct: add ct zone table
    Fixed unused variable compile warning
    Fixed missing colon in struct description
====================
Acked-by: NJakub Kicinski <kuba@kernel.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add merging of pre/post_ct flow rules into the tc_merge table.
Pre_ct flows needs to be merge with post_ct flows and vice versa.

This needs to be done for all flows in the same zone table, as well
as with the wc_zone_table, which is for flows masking out ct_zone
info.

Cleanup is happening when all the tables are cleared up and prints
a warning traceback as this is not expected in the final version.
At this point we are not actually returning success for the offload,
so we do not get any delete requests for flows, so we can't delete
them that way yet. This means that cleanup happens in what would
usually be an exception path.
Signed-off-by: NLouis Peens <louis.peens@corigine.com>
Signed-off-by: NYinjun Zhang <yinjun.zhang@corigine.com>
Signed-off-by: NSimon Horman <simon.horman@corigine.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add the table required to store the merge result of pre_ct and post_ct
flows. This is just the initial setup and teardown of the table,
the implementation will be in follow-up patches.
Signed-off-by: NLouis Peens <louis.peens@corigine.com>
Signed-off-by: NYinjun Zhang <yinjun.zhang@corigine.com>
Signed-off-by: NSimon Horman <simon.horman@corigine.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add a hashtable which contains entries to map flow cookies to ct
flow entries. Currently the entries are added and not used, but
follow-up patches will use this for stats updates and flow deletes.
Signed-off-by: NLouis Peens <louis.peens@corigine.com>
Signed-off-by: NYinjun Zhang <yinjun.zhang@corigine.com>
Signed-off-by: NSimon Horman <simon.horman@corigine.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This commit starts adding the structures and lists that will
be used in follow up commits to enable offloading of conntrack.
Some stub functions are also introduced as placeholders by
this commit.
Signed-off-by: NLouis Peens <louis.peens@corigine.com>
Signed-off-by: NYinjun Zhang <yinjun.zhang@corigine.com>
Signed-off-by: NSimon Horman <simon.horman@corigine.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Start populating the pre/post_ct handler functions. Add a zone entry
to the zone table, based on the zone information from the flow. In
the case of a post_ct flow which has a wildcarded match on the zone
create a special entry.
Signed-off-by: NLouis Peens <louis.peens@corigine.com>
Signed-off-by: NYinjun Zhang <yinjun.zhang@corigine.com>
Signed-off-by: NSimon Horman <simon.horman@corigine.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add initial zone table to nfp_flower_priv. This table will be used
to store all the information required to offload conntrack.
Signed-off-by: NLouis Peens <louis.peens@corigine.com>
Signed-off-by: NYinjun Zhang <yinjun.zhang@corigine.com>
Signed-off-by: NSimon Horman <simon.horman@corigine.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add checks to see if a flow is a conntrack flow we can potentially
handle. Just stub out the handling the different conntrack flows.
Signed-off-by: NLouis Peens <louis.peens@corigine.com>
Signed-off-by: NYinjun Zhang <yinjun.zhang@corigine.com>
Signed-off-by: NSimon Horman <simon.horman@corigine.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This is in preparation for conntrack offload support which makes
used of different chains. Add explicit checks for conntrack and
non-zero chains in the add_offload path.
Signed-off-by: NLouis Peens <louis.peens@corigine.com>
Signed-off-by: NYinjun Zhang <yinjun.zhang@corigine.com>
Signed-off-by: NSimon Horman <simon.horman@corigine.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Fix some spelling mistakes in comments:
thats  ==> that's
serivce  ==> service
varience  ==> variance
Signed-off-by: NZheng Yongjun <zhengyongjun3@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

targetted  ==> targeted
Signed-off-by: NZheng Yongjun <zhengyongjun3@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Fix some spelling mistakes in comments:
udpate  ==> update
retreive  ==> retrieve
accidentially  ==> accidentally
correspondig  ==> corresponding
adddress  ==> address
estabilish  ==> establish
commplete  ==> complete
Unkown  ==> Unknown
triggerd  ==> triggered
transtion  ==> transition
Signed-off-by: NZheng Yongjun <zhengyongjun3@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

reseting  ==> resetting
alloced  ==> allocated
accomodate  ==> accommodate
Signed-off-by: NZheng Yongjun <zhengyongjun3@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

atribute  ==> attribute
Signed-off-by: NZheng Yongjun <zhengyongjun3@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Use meaningfull micro IPV4_MIN_MTU
Signed-off-by: Nzhang kai <zhangkaiheb@126.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This helps validating DTS files.

Introduced changes:
1. Swapped #address-cells and #size-cells values
2. Renamed node: s/enet-gphy/ethernet-phy@/
Signed-off-by: NRafał Miłecki <rafal@milecki.pl>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Pablo Neira Ayuso says:

====================
Netfilter updates for net-next

The following patchset contains Netfilter updates for net-next:

1) Support for SCTP chunks matching on nf_tables, from Phil Sutter.

2) Skip LDMXCSR, we don't need a valid MXCSR state. From Stefano Brivio.

3) CONFIG_RETPOLINE for nf_tables set lookups, from Florian Westphal.

4) A few Kconfig leading spaces removal, from Juerg Haefliger.

5) Remove spinlock from xt_limit, from Jason Baron.

6) Remove useless initialization in xt_CT, oneliner from Yang Li.

7) Tree-wide replacement of netlink_unicast() by nfnetlink_unicast().

8) Reduce footprint of several structures: xt_action_param,
   nft_pktinfo and nf_hook_state, from Florian.

10) Add nft_thoff() and nft_sk() helpers and use them, also from Florian.

11) Fix documentation in nf_tables pipapo avx2, from Florian Westphal.

12) Fix clang-12 fmt string warnings, also from Florian.
====================

Sharath Chandra Vurukala says:

====================
net: qualcomm: rmnet: Enable Mapv5

This series introduces the MAPv5 packet format.

   Patch 0 documents the MAPv4/v5.
   Patch 1 introduces the MAPv5 and the Inline checksum offload for RX/Ingress.
   Patch 2 introduces the MAPv5 and the Inline checksum offload for TX/Egress.

   A new checksum header format is used as part of MAPv5.For RX checksum offload,
   the checksum is verified by the HW and the validity is marked in the checksum
   header of MAPv5. For TX, the required metadata is filled up so hardware can
   compute the checksum.

   v1->v2:
   - Fixed the compilation errors, warnings reported by kernel test robot.
   - Checksum header definition is expanded to support big, little endian
           formats as mentioned by Jakub.

   v2->v3:
   - Fixed compilation errors reported by kernel bot for big endian flavor.

   v3->v4:
   - Made changes to use masks instead of C bit-fields as suggested by Jakub/Alex.

   v4->v5:
   - Corrected checkpatch errors and warnings reported by patchwork.

   v5->v6:
   - Corrected the bug identified by Alex and incorporated all his comments.

   v6->v7:
   - Removed duplicate inclusion of linux/bitfield.h in rmnet_map_data.c

   v7->v8:
   - Have addressed comments given by JAkub on v7 patches.
   - As suggested by Jakub, skb_cow_head() is used instead of expanding
     the head directly. This is now done in  rmnet_map_egress_handler().
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Adding support for MAPv5 egress packets.

This involves adding the MAPv5 header and setting the csum_valid_required
in the checksum header to request HW compute the checksum.

Corresponding stats are incremented based on whether the checksum is
computed in software or HW.

New stat has been added which represents the count of packets whose
checksum is calculated by the HW.
Signed-off-by: NSharath Chandra Vurukala <sharathv@codeaurora.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Adding support for processing of MAPv5 downlink packets.
It involves parsing the Mapv5 packet and checking the csum header
to know whether the hardware has validated the checksum and is
valid or not.

Based on the checksum valid bit the corresponding stats are
incremented and skb->ip_summed is marked either CHECKSUM_UNNECESSARY
or left as CHEKSUM_NONE to let network stack revalidate the checksum
and update the respective snmp stats.

Current MAPV1 header has been modified, the reserved field in the
Mapv1 header is now used for next header indication.
Signed-off-by: NSharath Chandra Vurukala <sharathv@codeaurora.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Adding documentation explaining the new MAPv4/v5 packet formats
and the corresponding checksum offload headers.
Signed-off-by: NSharath Chandra Vurukala <sharathv@codeaurora.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Tony Nguyen says:

====================
iwl-next Intel Wired LAN Driver Updates 2021-06-01

This pull request is targeting net-next and rdma-next branches.
These patches have been reviewed by netdev and rdma mailing lists[1].

This series adds RDMA support to the ice driver for E810 devices and
converts the i40e driver to use the auxiliary bus infrastructure
for X722 devices. The PCI netdev drivers register auxiliary RDMA devices
that will bind to auxiliary drivers registered by the new irdma module.

[1] https://lore.kernel.org/netdev/20210520143809.819-1-shiraz.saleem@intel.com/
---
v3:
- ice_aq_add_rdma_qsets(), ice_cfg_vsi_rdma(), ice_[ena|dis]_vsi_rdma_qset(),
and ice_cfg_rdma_fltr() no longer return ice_status
- Remove null check from ice_aq_add_rdma_qsets()

v2:
- Added patch 'i40e: Replace one-element array with flexible-array
member'

Changes since linked review (v6):
- Removed unnecessary checks in i40e_client_device_register() and
i40e_client_device_unregister()
- Simplified the i40e_client_device_register() API
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

informations  ==> information
typicaly  ==> typically
derrive  ==> derive
eventhough  ==> even though
Signed-off-by: NZheng Yongjun <zhengyongjun3@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

wierdness  ==> weirdness
multicat  ==> multicast
limite  ==> limit
adddress  ==> address
operater  ==> operator
intial  ==> initial
smaler  ==> smaller
Communcation  ==> Communication
funcitons  ==> functions
everytime  ==> every time
Neigbor  ==> Neighbor
performace  ==> performance
Signed-off-by: NZheng Yongjun <zhengyongjun3@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

possibile  ==> possible
Signed-off-by: NZheng Yongjun <zhengyongjun3@huawei.com>
Reviewed-by: NDavid Ahern <dsahern@kernel.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Suppport  ==> Support
Signed-off-by: NZheng Yongjun <zhengyongjun3@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

underlaying  ==> underlying
Signed-off-by: NZheng Yongjun <zhengyongjun3@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

When kalloc or kmemdup failed, should return ENOMEM rather than ENOBUF.
Signed-off-by: NZheng Yongjun <zhengyongjun3@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

When kalloc or kmemdup failed, should return ENOMEM rather than ENOBUF.
Signed-off-by: NZheng Yongjun <zhengyongjun3@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

If CONFIG_IGB_HWMON is n, gcc warns:

drivers/net/ethernet/intel/igb/e1000_82575.c:2765:17:
 warning: ‘e1000_emc_therm_limit’ defined but not used [-Wunused-const-variable=]
 static const u8 e1000_emc_therm_limit[4] = {
                 ^~~~~~~~~~~~~~~~~~~~~
drivers/net/ethernet/intel/igb/e1000_82575.c:2759:17:
 warning: ‘e1000_emc_temp_data’ defined but not used [-Wunused-const-variable=]
 static const u8 e1000_emc_temp_data[4] = {
                 ^~~~~~~~~~~~~~~~~~~

Move it into #ifdef block to fix this.
Signed-off-by: NYueHaibing <yuehaibing@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

If CONFIG_PCI_IOV is n, make W=1 warns:

drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c:3909:33:
 warning: ‘cxgb4_mgmt_ethtool_ops’ defined but not used [-Wunused-const-variable=]
 static const struct ethtool_ops cxgb4_mgmt_ethtool_ops = {
                                 ^~~~~~~~~~~~~~~~~~~~~~

Move it into #ifdef block to fix this.
Signed-off-by: NYueHaibing <yuehaibing@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

If CONFIG_PROC_FS is n, gcc warns:

drivers/net/hamradio/bpqether.c:437:36:
 warning: ‘bpq_seqops’ defined but not used [-Wunused-const-variable=]
 static const struct seq_operations bpq_seqops = {
                                    ^~~~~~~~~~
Use #ifdef macro to gurad this.
Signed-off-by: NYueHaibing <yuehaibing@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

On Intel platforms, not all safety features are enabled on the hardware.
The current implementation enable all safety features by default. This
will cause mass error and warning printouts after the module is loaded.

Introduce platform specific safety features flag to enable or disable
each safety features.
Signed-off-by: NWong Vee Khee <vee.khee.wong@linux.intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

In the case MICROREAD_CB_TYPE_READER_ALL clang reports a dead code
warning. The error code assigned to variable err is already passed
to async_cb(). The assignment is redundant and can be removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: NNigel Christian <nigel.l.christian@gmail.com>
Reviewed-by: NKrzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Peng Li says:

====================
net: hdlc: clean up some code style issues

This patchset clean up some code style issues.
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Braces {} should be used on all arms of this statement.
Signed-off-by: NPeng Li <lipeng321@huawei.com>
Signed-off-by: NGuangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Should not use assignment in if condition.
Signed-off-by: NPeng Li <lipeng321@huawei.com>
Signed-off-by: NGuangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

According to the chackpatch.pl, comparison to NULL could
be written "!param".
Signed-off-by: NPeng Li <lipeng321@huawei.com>
Signed-off-by: NGuangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

According to the chackpatch.pl,
EXPORT_SYMBOL(foo); should immediately follow its function/variable.
Signed-off-by: NPeng Li <lipeng321@huawei.com>
Signed-off-by: NGuangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>