Pre-fetch send buffer for the CDC validation message before entering the
send_lock. Without that the send call might fail with -EBUSY because
there are no free buffers and waiting for buffers is not possible under
send_lock.
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Reviewed-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Vladimir Oltean says:

====================
Fix 2 non-critical issues in SJA1105 DSA

This small series suppresses the W=1 warnings in the sja1105 driver and
it corrects some register offsets. I would like to target it against
net-next since it would have non-trivial conflicts with net, and the
problems it solves are not that big of a deal.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

The dynamic configuration interface for the General Params and the L2
Lookup Params tables was copy-pasted between E/T devices and P/Q/R/S
devices. Nonetheless, these interfaces are bitwise different.

The driver is using dynamic reconfiguration of the General Parameters
table for the port mirroring feature, which was therefore broken on
P/Q/R/S.

Note that this patch can't be backported easily very far to stable trees
(since it conflicts with some other development done since the
introduction of the driver). So the Fixes: tag is purely informational.

Fixes: 8aa9ebcc ("net: dsa: Introduce driver for NXP SJA1105 5-port L2 switch")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Newer compilers complain with W=1 builds that there are non-static
functions defined in sja1105_static_config.c that don't have a
prototype, because their prototype is defined in sja1105.h which this
translation unit does not include.

I don't entirely understand what is the point of these warnings, since
in principle there's nothing wrong with that. But let's move the
prototypes to a header file that _is_ included by
sja1105_static_config.c, since that will make these warnings go away.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Saeed Mahameed says:

====================
mlx5-cleanup-2020-05-29

Accumulated cleanup patches and sparse warning fixes for mlx5 driver.

1) sync with mlx5-next branch

2) Eli Cohen declares mpls_entry_encode() helper in mpls.h as suggested
by Jakub Kicinski and David Ahern, and use it in mlx5

3) Jesper Fixes xdp data_meta setup in mlx5

4) Many sparse and build warnings cleanup
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

Huazhong Tan says:

====================
net: hns3: adds some cleanups for -next

There are some cleanups for the HNS3 ethernet driver, fix an
incorrect print format, an incorrect comment and some coding
style issues, also remove some unused codes and macros.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

NETIF_F_HW_VLAN_CTAG_FILTER is not set in netdev->hw_feature for
the HNS3 driver, so the handler of NETIF_F_HW_VLAN_CTAG_FILTER
in hns3_nic_set_features() won't be called, remove it.
Reported-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Remove a redundant blank line in hclgevf_cmd_set_promisc_mode(),
and fix a reverse xmas tree coding style issue in
hclgevf_set_rss_tc_mode().
Reported-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

struct hclgevf_dev stands for VF device, its field num_tqps
indicates the number of VF's task queue pairs, so the comment
is incorrect, replace 'PF' with 'VF'.
Reported-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Macro hclgevf_ring_to_dma_dir and hclgevf_is_csq defined in
hclgevf_cmd.c, but not used, so remove them.
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Macro hclge_is_csq defined in hcgle_cmd.c has not been used,
so remove it.
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Use %d to print int variable 'ret' in hclge_mac_mdio_config().
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Fix sparse warning:
drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c:988:29:
error: symbol 'mlx5e_dcbnl_ops' was not declared. Should it be static?
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

Fixes sparse warnings:
warning: cast to restricted __be32
warning: restricted __be32 degrades to integer
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>

Fix some trivial warnings of the type:
warning: incorrect type in initializer (different base types)
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>

spi is __be32, fix that.

Fixes sparse warning:
drivers/net/ethernet/mellanox/mlx5/core/accel/ipsec.c:74:64
warning: incorrect type
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

tls handle and rcd_sn are actually big endian and not in host format.
Fix that.

Fix the following sparse warnings:
drivers/net/ethernet/mellanox/mlx5/core/en_accel/tls.c:177:21:
warning: cast to restricted __be64

drivers/net/ethernet/mellanox/mlx5/core/en_accel/tls.c:178:52:
warning: incorrect type in argument 2 (different base types)
    expected unsigned int [usertype] handle
    got restricted __be32 [usertype] handle
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

Fix sparse warning:
drivers/net/ethernet/mellanox/mlx5/core/cmd.c:1949:15:
warning: memset with byte count of 271720

mlx5_cmd_stats array is too big to be held inline in mlx5_cmd.
Allocate it separately.
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

dr_ste_crc32_calc() calculates crc32 and should return it in HW format.
It is being used to calculate a u32 index, hence we force the return value
of u32 to avoid the sparse warning:

drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste.c:115:16:
warning: incorrect type in return expression (different base types)
    expected unsigned int
    got restricted __be32 [usertype]
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>

raw_ip actual type is __be32 and not u32.
Fix that and get rid of the warning.

drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste.c:906:31:
warning: cast to restricted __be32
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>

HW spec objects should receive a void ptr to work on, the MLX5_SET/GET
macro will know how to handle it.

No need to provide explicit or wrong pointer type in this case.

warning: incorrect type in argument 1 (different base types)
    expected unsigned long long const [usertype] *sw_action
    got restricted __be64 [usertype] *[assigned] sw_action
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>

Make use of generic API mpls_entry_encode() to build mpls label and get
rid of local function.
Signed-off-by: Eli Cohen <eli@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

Move mpls_entry_encode() from net/mpls/internal.h to include/net/mpls.h
and make it available for other users. Specifically, hardware driver that
offload MPLS can benefit from that.
Suggested-by: Jakub Kicinski <kuba@kernel.org>
Suggested-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Eli Cohen <eli@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

Moving the mlx5_ifc_query_qp_out_bits structure on the stack was a bit
excessive and now causes the compiler to complain on 32-bit architectures:

drivers/net/ethernet/mellanox/mlx5/core/debugfs.c: In function 'qp_read_field':
drivers/net/ethernet/mellanox/mlx5/core/debugfs.c:274:1: error: the frame size of 1104 bytes is larger than 1024 bytes [-Werror=frame-larger-than=]

Revert the previous patch partially to use dynamically allocation as
the code did before. Unfortunately there is no good error handling
in case the allocation fails.

Fixes: 57a6c5e9 ("net/mlx5: Replace hand written QP context struct with automatic getters")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

Clang warns:

drivers/net/ethernet/mellanox/mlx5/core/en_tc.c:3712:6: warning:
variable 'err' is used uninitialized whenever 'if' condition is false
[-Wsometimes-uninitialized]
        if (IS_ERR(d->pkt_reformat)) {
            ^~~~~~~~~~~~~~~~~~~~~~~
drivers/net/ethernet/mellanox/mlx5/core/en_tc.c:3718:6: note:
uninitialized use occurs here
        if (err)
            ^~~
drivers/net/ethernet/mellanox/mlx5/core/en_tc.c:3712:2: note: remove the
'if' if its condition is always true
        if (IS_ERR(d->pkt_reformat)) {
        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/ethernet/mellanox/mlx5/core/en_tc.c:3670:9: note: initialize
the variable 'err' to silence this warning
        int err;
               ^
                = 0
1 warning generated.

It is not wrong, err is only ever initialized in if statements but this
one is not in one. Initialize err to 0 to fix this.

Fixes: 14e6b038 ("net/mlx5e: Add support for hw decapsulation of MPLS over UDP")
Link: https://github.com/ClangBuiltLinux/linux/issues/1037Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

"mdoe"->"mode"

Fixes: d956873f ("net/mlx5e: Introduce kconfig var for TC support")
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reported-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>

The helper function xdp_set_data_meta_invalid() must be called after
setting xdp->data as it depends on it.

The bug was introduced in the cited patch below, and cause the kernel
to crash when using BPF helper bpf_xdp_adjust_head() on mlx5 driver.

Fixes: 39d6443c ("mlx5, xsk: Migrate to new MEM_TYPE_XSK_BUFF_POOL")
Reported-by: David Ahern <dsahern@kernel.org>
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Tested-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

As of commit 98fa6271
("tcp: refactor setting the initial congestion window") this is called
only from tcp_input.c, so it can be static.
Signed-off-by: Florian Westphal <fw@strlen.de>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

kbuild test robot is reporting:
net/ethtool/cabletest.c:230:5: warning: no previous prototype for

Mark the function as static.
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

A previous refactoring missed some locations the flags were renamed
but not moved from the previous flower_ext_feats to the new flower_en_feats
variable. This lead to the FLOW_MERGE and LAG features not being enabled.

Fixes: e09303d3 ("nfp: flower: renaming of feature bits")
Signed-off-by: Louis Peens <louis.peens@netronome.com>
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

The driver itself was renamed before getting merged into mainline, but
the binding document kept the old name. This makes both names consistent.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Fugang Duan says:

====================
net: ethernet: dwmac: add ethernet glue logic for NXP imx8 chip

NXP imx8 family like imx8mp/imx8dxl chips support Synopsys
MAC 5.10a IP, the patch set is to add ethernet DWMAC glue
layer including clocks, dwmac address width, phy interface
mode selection and rgmii txclk rate adjustment in runtime.

v1 -> v2:
- suggested by Andrew: add the "snps,dwmac-5.10a" compatible
  string into NXP binding documentation.
- suggested by David: adjust code sequences in order to have
  reverse christmas tree local variable ordering.

Thanks Andrew and David for the review.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

Add description for NXP imx8 families like imx8mp/imx8dxl
that integrate the Synopsys gmac IP version 5.10a.
Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

NXP imx8 family like imx8mp/imx8dxl chips support Synopsys MAC 5.10a IP.
This patch adds settings for NXP imx8 glue layer:
- clocks
- dwmac address width
- phy interface mode selection
- adjust rgmii txclk rate

v2:
- adjust code sequences in order to have reverse christmas
  tree local variable ordering.
Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Add "snps,dwmac-5.10a" compatible string for 5.10a version that can
avoid to define some plat data in glue layer.
Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Fixes gcc '-Wunused-but-set-variable' warning:

net/tipc/msg.c: In function 'tipc_msg_append':
net/tipc/msg.c:215:24: warning:
 variable 'prev' set but not used [-Wunused-but-set-variable]

commit 0a3e060f ("tipc: add test for Nagle algorithm effectiveness")
left behind this, remove it.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Be there 2 switches spi/spi2.0 and spi/spi2.1 in a cross-chip setup,
both under the same VLAN-filtering bridge, both in the
SJA1105_VLAN_BEST_EFFORT state.

If we try to change the VLAN state of one of the switches (to
SJA1105_VLAN_FILTERING_FULL) we get the following error:

devlink dev param set spi/spi2.1 name best_effort_vlan_filtering value
false cmode runtime
[   38.325683] sja1105 spi2.1: Not allowed to overcommit frame memory.
               L2 memory partitions and VL memory partitions share the
               same space. The sum of all 16 memory partitions is not
               allowed to be larger than 929 128-byte blocks (or 910
               with retagging). Please adjust
               l2-forwarding-parameters-table.part_spc and/or
               vl-forwarding-parameters-table.partspc.
[   38.356803] sja1105 spi2.1: Invalid config, cannot upload

This is because the spi/spi2.1 switch doesn't support tagging anymore in
the SJA1105_VLAN_FILTERING_FULL state, so it doesn't need to have any
retagging rules defined. Great, so it can use more frame memory
(retagging consumes extra memory).

But the built-in low-level static config checker from the sja1105 driver
says "not so fast, you've increased the frame memory to non-retagging
values, but you still kept the retagging rules in the static config".

So we need to rebuild the VLAN table immediately before re-uploading the
static config, operation which will take care, based on the new VLAN
state, of removing the retagging rules.

Fixes: 3f01c91a ("net: dsa: sja1105: implement VLAN retagging for dsa_8021q sub-VLANs")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Right now, our only tag_8021q user, sja1105, has the ability to restore
bridge VLANs on its own, so this logic is unnecessary.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

  net/mlx5: Add ability to read and write ECE options
  net/mlx5: Add support for RDMA TX FT headers modifying
  net/mlx5: Move iseg access helper routines close to mlx5_core driver
  net/mlx5: Cleanup mlx5_ifc_fte_match_set_misc2_bits
  net/mlx5: Add support in forward to namespace
  {IB/net}/mlx5: Simplify don't trap code
  net/mlx5: Replace zero-length array with flexible-array
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

Christoph Hellwig says:

====================
remove kernel_setsockopt v4

now that only the dlm calls to sctp are left for kernel_setsockopt,
while we haven't really made much progress with the sctp setsockopt
refactoring, how about this small series that splits out a
sctp_setsockopt_bindx_kernel that takes a kernel space address array
to share more code as requested by Marcelo.  This should fit in with
whatever variant of the refator of sctp setsockopt we go with, but
just solved the immediate problem for now.

Changes since v3:
 - dropped all the merged patches, just sctp setsockopt left now
 - factor out a new sctp_setsockopt_bindx_kernel helper instead of
   duplicating a small amount of logic

Changes since v2:
 - drop the separately merged kernel_getopt_removal
 - drop the sctp patches, as there is conflicting cleanup going on
 - add an additional ACK for the rxrpc changes

Changes since v1:
 - use ->getname for sctp sockets in dlm
 - add a new ->bind_add struct proto method for dlm/sctp
 - switch the ipv6 and remaining sctp helpers to inline function so that
   the ipv6 and sctp modules are not pulled in by any module that could
   potentially use ipv6 or sctp connections
 - remove arguments to various sock_* helpers that are always used with
   the same constant arguments
====================
Signed-off-by: David S. Miller <davem@davemloft.net>