Throughout the driver there are several places where we wait
indefinitely for DPIO portal commands to be executed, while
the portal returns a busy response code.

Even though in theory we are guaranteed the portals become
available eventually, in practice the QBMan hardware module
may become unresponsive in various corner cases.

Make sure we can never get stuck in an infinite while loop
by adding a retry counter for all portal commands.
Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Don't print error message for a successful return value.

Fixes: d84c3a4d ("dpaa2-eth: Add new DPNI statistics counters")
Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Remove one function call whose result was not used anywhere.
Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Don't populate the array tick_array on the stack but instead make it
static. Makes the object code smaller by 29 bytes.

Before:
   text	   data	    bss	    dec	    hex	filename
  19191	    432	      0	  19623	   4ca7	hisilicon/hns3/hns3pf/hclge_tm.o

After:
   text	   data	    bss	    dec	    hex	filename
  19098	    496	      0	  19594	   4c8a	hisilicon/hns3/hns3pf/hclge_tm.o

(gcc version 9.2.1, amd64)
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Don't populate the arrays port_map and sl_map on the stack but
instead make them static. Makes the object code smaller by 64 bytes.

Before:
   text	   data	    bss	    dec	    hex	filename
  49575	   6872	     64	  56511	   dcbf	hisilicon/hns/hns_dsaf_main.o

After:
   text	   data	    bss	    dec	    hex	filename
  49350	   7032	     64	  56446	   dc7e	hisilicon/hns/hns_dsaf_main.o

(gcc version 9.2.1, amd64)
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Jakub Kicinski says:

====================
net/tls: minor micro optimizations

This set brings a number of minor code changes from my tree which
don't have a noticeable impact on performance but seem reasonable
nonetheless.

First sk_msg_sg copy array is converted to a bitmap, zeroing that
structure takes a lot of time, hence we should try to keep it
small.

Next two conditions are marked as unlikely, GCC seemed to had
little trouble correctly reasoning about those.

Patch 4 adds parameters to tls_device_decrypted() to avoid
walking structures, as all callers already have the relevant
pointers.

Lastly two boolean members of TLS context structures are
converted to a bitfield.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

Use a single bit instead of boolean to remember if packet
was already decrypted.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Store async_capable on a single bit instead of a full integer
to save space.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Avoid unnecessary pointer chasing and calculations, callers already
have most of the state tls_device_decrypted() needs.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Make sure GCC realizes it's unlikely that allocations will fail.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Tell GCC sk->err is not likely to be set.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Don't use bool array in struct sk_msg_sg, save 12 bytes.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Use helper skb_ensure_writable in two more places to simplify the code.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Consistent with how pskb_may_pull() also now does so.
Signed-off-by: David S. Miller <davem@davemloft.net>

This function de-facto returns a bool, so let's change the return type
accordingly.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Sameeh Jubran says:

====================
ena: Support ethtool set_channels

Difference from v2:
* ethtool's set/get channels: Switched to using combined instead of
  separate rx/tx
* Fixed error handling in set_channels
* Fixed indentation and cosmetic issues as requested by Jakub Kicinski

Difference from v1:
* Dropped the print from patch 0002 - "net: ena: multiple queue creation
  related cleanups" as requested by David Miller
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

Set channels callback enables the user to change the count of queues
used by the driver using ethtool. We decided to currently support only
equal number of rx and tx queues, this might change in the future.

Also rename dev_up to dev_was_up in ena_update_queue_count() to make
it clearer.
Signed-off-by: Sameeh Jubran <sameehj@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

The number of queues can be derived using ethtool, no need to print
it in ena_probe()
Signed-off-by: Sameeh Jubran <sameehj@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

- Update ena_ethtool:ena_get_channels() to return adapter->max_io_queues
  so that ethtool -l returns the correct maximum queue number.

- Change the name of ena_calc_io_queue_num() to
  ena_calc_max_io_queue_num() as it returns the maximum number of io
  queues and actual number of queues can be smaller if changed
  by ethtool -L which is implemented in a later commit.

- Change variable name from io_queue_num to max_num_io_queues in
  ena_calc_max_io_queue_num() and ena_probe().

- Make all types of variables that convey the number and sizeof queues
  to be u32, for consistency with the API between the driver and the
  device.
Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com>
Signed-off-by: Sameeh Jubran <sameehj@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Since we use the same IRQ and NAPI to service RX and TX then we need to
use a combined channel instead of rx and tx channels.
Signed-off-by: Sameeh Jubran <sameehj@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

- Rename ena_calc_queue_size() to ena_calc_io_queue_size() for clarity
  and consistency
- Remove redundant number of io queues parameter in functions
  ena_enable_msix() and ena_enable_msix_and_set_admin_interrupts(),
  which already get adapter parameter, so use adapter->num_io_queues
  in the function instead.
- Use the local variable ena_dev instead of ctx->ena_dev in
  ena_calc_io_queue_size
- Fix multi row comment alignments
Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com>
Signed-off-by: Sameeh Jubran <sameehj@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Most places in the code refer to the IO queues as io_queues and not
simply queues. Examples - max_io_queues_per_vf, ENA_MAX_NUM_IO_QUEUES,
ena_destroy_all_io_queues() etc..

We are also adding the new max_num_io_queues field to struct ena_adapter
in the following commit.

The changes included in this commit are:
struct ena_adapter->num_queues => struct ena_adapter->num_io_queues
Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com>
Signed-off-by: Sameeh Jubran <sameehj@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Daniel T. Lee says:

====================
samples: pktgen: allow to specify destination IP range

Currently, pktgen script supports specify destination port range.

To further extend the capabilities, this commit allows to specify destination
IP range with CIDR when running pktgen script.

Specifying destination IP range will be useful on various situation such as
testing RSS/RPS with randomizing n-tuple.

This patchset fixes the problem with checking the command result on proc_cmd,
and add feature to allow destination IP range.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

Currently, kernel pktgen has the feature to specify destination
address range for sending packet. (e.g. pgset "dst_min/dst_max")

But on samples, each pktgen script doesn't have any option to achieve this.

This commit adds the feature to specify the destination address range with CIDR.

    -d : ($DEST_IP)   destination IP. CIDR (e.g. 198.18.0.0/15) is also allowed

    # ./pktgen_sample01_simple.sh -6 -d fe80::20/126 -p 3000 -n 4
    # tcpdump ip6 and udp
    05:14:18.082285 IP6 fe80::99.71 > fe80::23.3000: UDP, length 16
    05:14:18.082564 IP6 fe80::99.43 > fe80::23.3000: UDP, length 16
    05:14:18.083366 IP6 fe80::99.107 > fe80::22.3000: UDP, length 16
    05:14:18.083585 IP6 fe80::99.97 > fe80::21.3000: UDP, length 16
Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

This commit adds CIDR parsing and IP validate helper function to parse
single IP or range of IP with CIDR. (e.g. 198.18.0.0/15)

Validating the address should be preceded prior to the parsing.
Helpers will be used in prior to set target address in samples/pktgen.
Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Currently, proc_cmd is used to dispatch command to 'pg_ctrl', 'pg_thread',
'pg_set'. proc_cmd is designed to check command result with grep the
"Result:", but this might fail since this string is only shown in
'pg_thread' and 'pg_set'.

This commit fixes this logic by grep-ing the "Result:" string only when
the command is not for 'pg_ctrl'.

For clarity of an execution flow, 'errexit' flag has been set.

To cleanup pktgen on exit, trap has been added for EXIT signal.
Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

This commit changes variable names that can cause confusion.

For example, variable DST_MIN is quite confusing since the
keyword 'udp_dst_min' and keyword 'dst_min' is used with pg_ctrl.

On the following commit, 'dst_min' will be used to set destination IP,
and the existing variable name DST_MIN should be changed.

Variable names are matched to the exact keyword used with pg_ctrl.
Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Jiri Pirko says:

====================
netdevsim: implement devlink dev_info op

Initial implementation of devlink dev_info op - just driver name is
filled up and sent to user. Bundled with selftest.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

Add test to verify netdevsim driver name returned by devlink dev info.
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Do simple dev_info devlink operation implementation which only fills up
the driver name.
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

In order for attrs to be prepared for reporter dump dumpit callback,
set GENL_DONT_VALIDATE_DUMP_STRICT instead of GENL_DONT_VALIDATE_DUMP.

Fixes: ee85da53 ("devlink: have genetlink code to parse the attrs during dumpit"
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Jose Abreu says:

====================
net: stmmac: Improvements for -next

Improvements for -next. More info in commit logs.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

GMAC4+ cores support Layer 3 and Layer 4 filtering. Add the
corresponding callbacks in these cores.
Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Add two new tests for VLAN Perfect Filtering. While at it, increase a
little bit the tests strings lenght so that we can have more descriptive
test names.
Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

If VLAN Hash Filtering is not available we can fallback to perfect
filtering instead. Let's implement this in XGMAC and GMAC cores and let
the user use this filter.

VLAN VID=0 always passes filter so we check if more than 2 VLANs are
created and return proper error code if so because perfect filtering
only supports 1 VID at a time.
Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Remove .owner field if calls are used which set it automatically
Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Remove .owner field if calls are used which set it automatically
Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Remove .owner field if calls are used which set it automatically
Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Fix build error:

net/rds/ib_cm.c: In function rds_dma_hdrs_alloc:
net/rds/ib_cm.c:475:13: error: implicit declaration of function dma_pool_zalloc; did you mean mempool_alloc? [-Werror=implicit-function-declaration]
   hdrs[i] = dma_pool_zalloc(pool, GFP_KERNEL, &hdr_daddrs[i]);
             ^~~~~~~~~~~~~~~
             mempool_alloc

net/rds/ib.c: In function rds_ib_dev_free:
net/rds/ib.c:111:3: error: implicit declaration of function dma_pool_destroy; did you mean mempool_destroy? [-Werror=implicit-function-declaration]
   dma_pool_destroy(rds_ibdev->rid_hdrs_pool);
   ^~~~~~~~~~~~~~~~
   mempool_destroy
Reported-by: Hulk Robot <hulkci@huawei.com>
Fixes: 9b17f588 ("net/rds: Use DMA memory pool allocation for rds_header")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Ido Schimmel says:

====================
mlxsw: Query number of modules from firmware

Vadim says:

The patchset adds support for a new field "num_of_modules" of Management
General Peripheral Information Register (MGPIR), providing the maximum
number of QSFP modules, which can be supported by the system.

It allows to obtain the number of QSFP modules directly from this field,
as a static data, instead of old method of getting this info through
"network port to QSFP module" mapping. With the old method, in case of
port dynamic re-configuration some modules can logically "disappear" as
a result of port split operations, which can cause some modules to
appear missing.

Such scenario can happen on a system equipped with a BMC card, while PCI
chip driver at host CPU side can perform some ports "split" or "unsplit"
operations, while BMC side I2C chip driver reads the "port-to-module"
mapping.

Add common API for FW "minor" and "subminor" versions validation and
share it between PCI and I2C based drivers.

Add FW version validation for "minimal" driver, because use of new field
"num_of_modules" in MGPIR register is not backward compatible.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>