This patch adds OEM commands and response handling. It also defines OEM
command and response structure as per NCSI specification along with its
handlers.

ncsi_cmd_handler_oem: This is a generic command request handler for OEM
commands
ncsi_rsp_handler_oem: This is a generic response handler for OEM commands
Signed-off-by: NVijay Khemka <vijaykhemka@fb.com>
Reviewed-by: NJustin Lee <justin.lee1@dell.com>
Reviewed-by: NSamuel Mendoza-Jonas <sam@mendozajonas.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Address compiler warning:

ip_defrag.c: In function 'send_udp_frags':
ip_defrag.c:206:16: warning: unused variable 'udphdr' [-Wunused-variable]
  struct udphdr udphdr;
                ^~~~~~
Signed-off-by: NJakub Sitnicki <jakub@cloudflare.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

use a TDC plugin, instead of building eBPF programs in the 'setup' stage.
'-B' argument can be used to build eBPF programs in $EBPFDIR directory,
in the 'pre-suite' stage. Binaries are then cleaned in 'post-suite' stage.
Signed-off-by: NDavide Caratti <dcaratti@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

rely on uAPI headers in the current kernel tree, rather than requiring the
correct version installed on the test system. While at it, group all
sections in a single binary and test the 'section' parameter.
Reported-by: NLucas Bates <lucasb@mojatatu.com>
Signed-off-by: NDavide Caratti <dcaratti@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Quentin Schulz says:

====================
mscc: ocelot: add support for SerDes muxing configuration

The Ocelot switch has currently an hardcoded SerDes muxing that suits only
a particular use case. Any other board setup will fail to work.

To prepare for upcoming boards' support that do not have the same muxing,
create a PHY driver that will handle all possible cases.

A SerDes can work in SGMII, QSGMII or PCIe and is also muxed to use a
given port depending on the selected mode or board design.

The SerDes configuration is in the middle of an address space (HSIO) that
is used to configure some parts in the MAC controller driver, that is why
we need to use a syscon so that we can write to the same address space from
different drivers safely using regmap.

This breaks backward compatibility but it's fine because there's only one
board at the moment that is using what's modified in this patch series.
This will break git bisect.

Even though this patch series is about SerDes __muxing__ configuration, the
DT node is named serdes for the simple reason that I couldn't find any
mention to SerDes anywhere else from the address space handled by this
driver.

v4:
  - add reviewed-by,
  - format the patch series with -M for identifying renamed files,
  - add parent info in DT binding of the SerDes IP,
  - move to macros SERDES[16]G(X) instead of multiple SERDES[16]G_[012345]
  constants,
  - move to SERDES[16]G_MAX being the last VALID macro of a type, so
  migrate to <= conditions instead of < when iterating,
  - create a SERDES_MUX_SGMII and SERDES_MUX_QSGMII macro so the muxing
  configurations are a tad more readable,
  - use a bunch of unsigned int instead of int,
  - return -EOPNOTSUPP for SERDES6G/PCIe until it's supported,
  - simplify condition when there is an error code returned by
  devm_of_phy_get,

v3:
  - add Paul Burton's Acked-By on MIPS patches so that the patch series can
  be merged in the net tree in its entirety,

v2:
  - use a switch case for setting the phy_mode in the SerDes driver as
  suggested by Andrew,
  - stop replacing the value of the error pointer in the SerDes driver,
  - use a dev_dbg for the deferring of the probe in the SerDes driver,
  - use constants in the Device Tree to select the SerDes macro in use with
  a port,
  - adapt the SerDes driver to use those constants,
  - add a header file in include/dt-bindings for the constants,
  - fix space/tab issue,
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Previously, the SerDes muxing was hardcoded to a given mode in the MAC
controller driver. Now, the SerDes muxing is configured within the
Device Tree and is enforced in the MAC controller driver so we can have
a lot of different SerDes configurations.

Make use of the SerDes PHYs in the MAC controller to set up the SerDes
according to the SerDes<->switch port mapping and the communication mode
with the Ethernet PHY.
Signed-off-by: NQuentin Schulz <quentin.schulz@bootlin.com>
Reviewed-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The Microsemi Ocelot can mux SerDes lanes (aka macros) to different
switch ports or even make it act as a PCIe interface.

This adds support for the muxing of the SerDes.
Signed-off-by: NQuentin Schulz <quentin.schulz@bootlin.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The Microsemi Ocelot has multiple SerDes and requires that the SerDes be
muxed accordingly to the hardware representation.

Let's add a constant for each SerDes available in the Microsemi Ocelot.
Reviewed-by: NRob Herring <robh@kernel.org>
Signed-off-by: NQuentin Schulz <quentin.schulz@bootlin.com>
Reviewed-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The Microsemi Ocelot has a set of register for SerDes/switch port muxing
as well as PCIe muxing for a specific SerDes, so let's add the device
and all SerDes in the Device Tree.
Reviewed-by: NFlorian Fainelli <f.fainelli@gmail.com>
Acked-by: NPaul Burton <paul.burton@mips.com>
Signed-off-by: NQuentin Schulz <quentin.schulz@bootlin.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NQuentin Schulz <quentin.schulz@bootlin.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Prepare for upcoming phys that'll handle QSGMII or PCIe.
Reviewed-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NQuentin Schulz <quentin.schulz@bootlin.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Since HSIO address space can be accessed by different drivers, let's
simplify the register address definitions so that it can be easily used
by all drivers and put the register address definition in the
include/soc/mscc/ocelot_hsio.h header file.
Reviewed-by: NFlorian Fainelli <f.fainelli@gmail.com>
Acked-by: NAlexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: NQuentin Schulz <quentin.schulz@bootlin.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Since HSIO address space can be used by different drivers (PLL, SerDes
muxing, temperature sensor), let's move it somewhere it can be included
by all drivers.
Reviewed-by: NFlorian Fainelli <f.fainelli@gmail.com>
Acked-by: NAlexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: NQuentin Schulz <quentin.schulz@bootlin.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

HSIO address space was moved to a syscon, hence we need to get the
regmap of this address space from there and no more from the device
node.
Reviewed-by: NFlorian Fainelli <f.fainelli@gmail.com>
Acked-by: NAlexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: NQuentin Schulz <quentin.schulz@bootlin.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

HSIO register address space should be handled outside of the MAC
controller as there are some registers for PLL5 configuring,
SerDes/switch port muxing and a thermal sensor IP, so let's remove it.
Acked-by: NAlexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: NQuentin Schulz <quentin.schulz@bootlin.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

HSIO contains registers for PLL5 configuration, SerDes/switch port
muxing and a thermal sensor, hence we can't keep it in the switch DT
node.
Acked-by: NPaul Burton <paul.burton@mips.com>
Acked-by: NAlexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: NQuentin Schulz <quentin.schulz@bootlin.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

move_addr_to_kernel() returns only negative values on error, or zero on
success. Rewrite the error check to an idiomatic form to avoid confusing
the reader.
Signed-off-by: NJakub Sitnicki <jakub@cloudflare.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

ns_poll() used spin_is_locked() + spin_lock() to get achieve the same
thing as a spin_trylock(), so simplify it by using that instead. This is
also a step towards possibly removing spin_is_locked().
Signed-off-by: NLance Roy <ldr709@gmail.com>
Cc: Chas Williams <3chas3@gmail.com>
Cc: <linux-atm-general@lists.sourceforge.net>
Cc: <netdev@vger.kernel.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Salil Mehta says:

====================
Fixes, minor changes & cleanups for the Unicast MAC VLAN table

This patch-set presents necessary modifications, fixes & cleanups related
to Unicast MAC Vlan Table to support revision 0x21 hardware.
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

In revision 0x20, we use vlan id != 0 to check whether a vlan tag
has been offloaded, so vlan id 0 is not supported.

In revision 0x21, rx buffer descriptor adds two bits to indicate
whether one or more vlan tags have been offloaded, so vlan id 0
is valid now.

This patch seperates the handle for vlan id 0, add vlan id 0 support
for revision 0x21.

Fixes: 5b5455a9 ("net: hns3: Add STRP_TAGP field support for hardware revision 0x21")
Signed-off-by: NJian Shen <shenjian15@huawei.com>
Signed-off-by: NSalil Mehta <salil.mehta@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

In revision 0x21, hw supports both ingress and egress vlan filter.
This patch adds support for it.
Signed-off-by: NZhongzhu Liu <liuzhongzhu@huawei.com>
Signed-off-by: NJian Shen <shenjian15@huawei.com>
Signed-off-by: NSalil Mehta <salil.mehta@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

For mta table support has been dropped, remove the code for mta table.
Signed-off-by: NZhongzhu Liu <liuzhongzhu@huawei.com>
Signed-off-by: NJian Shen <shenjian15@huawei.com>
Signed-off-by: NSalil Mehta <salil.mehta@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

In previously implement for unicast mac vlan table, the space is
shared by all the functions, driver does nothing when the space is
exhausted. This patch preallocates the space of unicast mac vlan
table for each function by software. Each function can only use its
private space and available shared space, avoiding single function
exhausts too much space, and other functions are unable to add
unicast mac address.
Signed-off-by: NJian Shen <shenjian15@huawei.com>
Signed-off-by: NSalil Mehta <salil.mehta@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

In original codes, the mac vlan table entries are not cleared when
unload hns3 driver. The dirty mac vlan table entries will make the
result of looking up mac vlan table being unexpected.

When doing core reset or global reset, the firmware will clear all
the tables for driver, and driver shouldn't send any commands to
firmware during reset. But when doing function reset, the driver
needs to clear the tables itself.

This patch clears the mac vlan table entries for each client when
unload driver or reset.
Signed-off-by: NJian Shen <shenjian15@huawei.com>
Signed-off-by: NSalil Mehta <salil.mehta@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The default mask configuration has been done by firmware, so the driver
doesn't need to do it any more.
Signed-off-by: NZhongzhu Liu <liuzhongzhu@huawei.com>
Signed-off-by: NPeng Li <lipeng321@huawei.com>
Signed-off-by: NJian Shen <shenjian15@huawei.com>
Signed-off-by: NSalil Mehta <salil.mehta@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add ipv4 and ipv6 test cases with an invalid metrics option causing
ip_metrics_convert to fail. Tests clean up path during route add.

Also, add nodad to to ipv6 address add. When running ipv6_route_metrics
directly seeing an occasional failure on the "Using route with mtu metric"
test case.
Signed-off-by: NDavid Ahern <dsahern@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

In case ip_fib_metrics_init() returns an error, we better
rewrite rt->fib6_metrics with &dst_default_metrics so that
we do not crash later in ip_fib_metrics_put()

Fixes: 767a2217 ("net: common metrics init helper for FIB entries")
Signed-off-by: NEric Dumazet <edumazet@google.com>
Reported-by: Nsyzbot <syzkaller@googlegroups.com>
Reviewed-by: NDavid Ahern <dsahern@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Avoid the socket lookup cost in udp_gro_receive if no socket has a
udp tunnel callback configured.

udp_sk(sk)->gro_receive requires a registration with
setup_udp_tunnel_sock, which enables the static key.
Signed-off-by: NWillem de Bruijn <willemb@google.com>
Acked-by: NPaolo Abeni <pabeni@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Notice that in this particular case, I replaced the
" --v-- fall through --v-- " comment with a proper
"fall through", which is what GCC is expecting to find.

Addresses-Coverity-ID: 1364476 ("Missing break in switch")
Addresses-Coverity-ID: 1364477 ("Missing break in switch")
Signed-off-by: NGustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

when 32 bit port capability is in use, use FW_PORT_ACTION_L1_CFG32
rather than FW_PORT_ACTION_L1_CFG.
Signed-off-by: NCasey Leedom <leedom@chelsio.com>
Signed-off-by: NGanesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

In commit ec3ed293 ("net_sched: change tcf_del_walker() to take idrinfo->lock")
we move fl_hw_destroy_tmplt() to a workqueue to avoid blocking
with the spinlock held. Unfortunately, this causes a lot of
troubles here:

1. tcf_chain_destroy() could be called right after we queue the work
   but before the work runs. This is a use-after-free.

2. The chain refcnt is already 0, we can't even just hold it again.
   We can check refcnt==1 but it is ugly.

3. The chain with refcnt 0 is still visible in its block, which means
   it could be still found and used!

4. The block has a refcnt too, we can't hold it without introducing a
   proper API either.

We can make it working but the end result is ugly. Instead of wasting
time on reviewing it, let's just convert the troubling spinlock to
a mutex, which allows us to use non-atomic allocations too.

Fixes: ec3ed293 ("net_sched: change tcf_del_walker() to take idrinfo->lock")
Reported-by: NIdo Schimmel <idosch@idosch.org>
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: Vlad Buslov <vladbu@mellanox.com>
Cc: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: NCong Wang <xiyou.wangcong@gmail.com>
Tested-by: NIdo Schimmel <idosch@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Move the attribute parsing from neigh_dump_table to neigh_dump_info, and
pass the filter arguments down to neigh_dump_table in a new struct. Add
the filter option to proxy neigh dumps as well to make them consistent.
Signed-off-by: NDavid Ahern <dsahern@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

David Ahern says:

====================
net: Consolidate metrics handling for ipv4 and ipv6

As part of the IPv6 fib info refactoring, the intent was to make metrics
handling for ipv6 identical to ipv4. One oversight in ip6_dst_destroy
led to confusion and a couple of incomplete attempts at finding and
fixing the resulting memory leak which was ultimately resolved by
ce7ea4af ("ipv6: fix memory leak on dst->_metrics").

Refactor metrics hanlding make the code really identical for v4 and v6,
and add a few test cases.
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add ipv4 and ipv6 test cases for metrics (mtu) when fib entries are
created. Can be used with kmemleak to see leaks with both fib entries
and dst_entry.
Signed-off-by: NDavid Ahern <dsahern@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Move the refcounting and potential free of dst metrics associated
for ipv4 and ipv6 to a common helper.
Signed-off-by: NDavid Ahern <dsahern@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

ipv4 and ipv6 both use refcounted metrics if FIB entries have metrics set.
Move the common initialization code to a helper and use for both protocols.
Signed-off-by: NDavid Ahern <dsahern@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Move the refcounting and potential free of dst metrics associated
with a fib entry to a helper and use it in both ipv4 and ipv6.
Signed-off-by: NDavid Ahern <dsahern@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Consolidate initialization of ipv4 and ipv6 metrics when fib entries
are created into a single helper, ip_fib_metrics_init, that handles
the call to ip_metrics_convert.

If no metrics are defined for the fib entry, then the metrics is set
to dst_default_metrics.
Signed-off-by: NDavid Ahern <dsahern@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

tcf_block_dev() doesn't seem to be used anywhere in the tree.
Signed-off-by: NJakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

As Michal remaind, we should allow to clear ttl inherit. Then we will
have three states:

1. set the flag, and do ttl inherit.
2. do not set the flag, use configured ttl value, or default ttl (0) if
   not set.
3. disable ttl inherit, use previous configured ttl value, or default ttl (0).

Fixes: 52d0d404 ("geneve: add ttl inherit support")
CC: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: NHangbin Liu <liuhangbin@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>