]> git.proxmox.com Git - mirror_ubuntu-kernels.git/log
mirror_ubuntu-kernels.git
2 years agonetfilter: nft_bitwise: track register operations
Pablo Neira Ayuso [Sun, 9 Jan 2022 16:11:24 +0000 (17:11 +0100)]
netfilter: nft_bitwise: track register operations

Check if the destination register already contains the data that this
bitwise expression performs. This allows to skip this redundant
operation.

If the destination contains a different bitwise operation, cancel the
register tracking information. If the destination contains no bitwise
operation, update the register tracking information.

Update the payload and meta expression to check if this bitwise
operation has been already performed on the register. Hence, both the
payload/meta and the bitwise expressions are reduced.

There is also a special case: If source register != destination register
and source register is not updated by a previous bitwise operation, then
transfer selector from the source register to the destination register.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2 years agonetfilter: nft_meta: track register operations
Pablo Neira Ayuso [Sun, 9 Jan 2022 16:11:23 +0000 (17:11 +0100)]
netfilter: nft_meta: track register operations

Check if the destination register already contains the data that this
meta store expression performs. This allows to skip this redundant
operation. If the destination contains a different selector, update
the register tracking information.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2 years agonetfilter: nft_payload: track register operations
Pablo Neira Ayuso [Sun, 9 Jan 2022 16:11:22 +0000 (17:11 +0100)]
netfilter: nft_payload: track register operations

Check if the destination register already contains the data that this
payload store expression performs. This allows to skip this redundant
operation. If the destination contains a different selector, update
the register tracking information.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2 years agonetfilter: nf_tables: add register tracking infrastructure
Pablo Neira Ayuso [Sun, 9 Jan 2022 16:11:21 +0000 (17:11 +0100)]
netfilter: nf_tables: add register tracking infrastructure

This patch adds new infrastructure to skip redundant selector store
operations on the same register to achieve a performance boost from
the packet path.

This is particularly noticeable in pure linear rulesets but it also
helps in rulesets which are already heaving relying in maps to avoid
ruleset linear inspection.

The idea is to keep data of the most recurrent store operations on
register to reuse them with cmp and lookup expressions.

This infrastructure allows for dynamic ruleset updates since the ruleset
blob reduction happens from the kernel.

Userspace still needs to be updated to maximize register utilization to
cooperate to improve register data reuse / reduce number of store on
register operations.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2 years agonetfilter: nf_tables: add NFT_REG32_NUM
Pablo Neira Ayuso [Sun, 9 Jan 2022 16:11:20 +0000 (17:11 +0100)]
netfilter: nf_tables: add NFT_REG32_NUM

Add a definition including the maximum number of 32-bits registers that
are used a scratchpad memory area to store data.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2 years agonetfilter: nf_tables: add rule blob layout
Pablo Neira Ayuso [Sun, 9 Jan 2022 16:11:19 +0000 (17:11 +0100)]
netfilter: nf_tables: add rule blob layout

This patch adds a blob layout per chain to represent the ruleset in the
packet datapath.

size (unsigned long)
struct nft_rule_dp
  struct nft_expr
  ...
        struct nft_rule_dp
          struct nft_expr
          ...
        struct nft_rule_dp (is_last=1)

The new structure nft_rule_dp represents the rule in a more compact way
(smaller memory footprint) compared to the control-plane nft_rule
structure.

The ruleset blob is a read-only data structure. The first field contains
the blob size, then the rules containing expressions. There is a trailing
rule which is used by the tracing infrastructure which is equivalent to
the NULL rule marker in the previous representation. The blob size field
does not include the size of this trailing rule marker.

The ruleset blob is generated from the commit path.

This patch reuses the infrastructure available since 0cbc06b3faba
("netfilter: nf_tables: remove synchronize_rcu in commit phase") to
build the array of rules per chain.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2 years agonetfilter: nft_limit: move stateful fields out of expression data
Pablo Neira Ayuso [Sun, 9 Jan 2022 16:11:18 +0000 (17:11 +0100)]
netfilter: nft_limit: move stateful fields out of expression data

In preparation for the rule blob representation.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2 years agonetfilter: nft_limit: rename stateful structure
Pablo Neira Ayuso [Sun, 9 Jan 2022 16:11:17 +0000 (17:11 +0100)]
netfilter: nft_limit: rename stateful structure

From struct nft_limit to nft_limit_priv.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2 years agonetfilter: nft_numgen: move stateful fields out of expression data
Pablo Neira Ayuso [Sun, 9 Jan 2022 16:11:16 +0000 (17:11 +0100)]
netfilter: nft_numgen: move stateful fields out of expression data

In preparation for the rule blob representation.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2 years agonetfilter: nft_quota: move stateful fields out of expression data
Pablo Neira Ayuso [Sun, 9 Jan 2022 16:11:15 +0000 (17:11 +0100)]
netfilter: nft_quota: move stateful fields out of expression data

In preparation for the rule blob representation.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2 years agonetfilter: nft_last: move stateful fields out of expression data
Pablo Neira Ayuso [Sun, 9 Jan 2022 16:11:14 +0000 (17:11 +0100)]
netfilter: nft_last: move stateful fields out of expression data

In preparation for the rule blob representation.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2 years agonetfilter: nft_connlimit: move stateful fields out of expression data
Pablo Neira Ayuso [Sun, 9 Jan 2022 16:11:13 +0000 (17:11 +0100)]
netfilter: nft_connlimit: move stateful fields out of expression data

In preparation for the rule blob representation.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2 years agonetfilter: egress: avoid a lockdep splat
Florian Westphal [Fri, 7 Jan 2022 14:46:16 +0000 (15:46 +0100)]
netfilter: egress: avoid a lockdep splat

include/linux/netfilter_netdev.h:97 suspicious rcu_dereference_check() usage!
2 locks held by sd-resolve/1100:
 0: ..(rcu_read_lock_bh){1:3}, at: ip_finish_output2
 1: ..(rcu_read_lock_bh){1:3}, at: __dev_queue_xmit
 __dev_queue_xmit+0 ..

The helper has two callers, one uses rcu_read_lock, the other
rcu_read_lock_bh().  Annotate the dereference to reflect this.

Fixes: 42df6e1d221dd ("netfilter: Introduce egress hook")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2 years agonet: prefer nf_ct_put instead of nf_conntrack_put
Florian Westphal [Fri, 7 Jan 2022 04:03:26 +0000 (05:03 +0100)]
net: prefer nf_ct_put instead of nf_conntrack_put

Its the same as nf_conntrack_put(), but without the
need for an indirect call.  The downside is a module dependency on
nf_conntrack, but all of these already depend on conntrack anyway.

Cc: Paul Blakey <paulb@mellanox.com>
Cc: dev@openvswitch.org
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2 years agonetfilter: conntrack: avoid useless indirection during conntrack destruction
Florian Westphal [Fri, 7 Jan 2022 04:03:25 +0000 (05:03 +0100)]
netfilter: conntrack: avoid useless indirection during conntrack destruction

nf_ct_put() results in a usesless indirection:

nf_ct_put -> nf_conntrack_put -> nf_conntrack_destroy -> rcu readlock +
indirect call of ct_hooks->destroy().

There are two _put helpers:
nf_ct_put and nf_conntrack_put.  The latter is what should be used in
code that MUST NOT cause a linker dependency on the conntrack module
(e.g. calls from core network stack).

Everyone else should call nf_ct_put() instead.

A followup patch will convert a few nf_conntrack_put() calls to
nf_ct_put(), in particular from modules that already have a conntrack
dependency such as act_ct or even nf_conntrack itself.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2 years agonetfilter: make function op structures const
Florian Westphal [Fri, 7 Jan 2022 04:03:24 +0000 (05:03 +0100)]
netfilter: make function op structures const

No functional changes, these structures should be const.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2 years agonetfilter: core: move ip_ct_attach indirection to struct nf_ct_hook
Florian Westphal [Fri, 7 Jan 2022 04:03:23 +0000 (05:03 +0100)]
netfilter: core: move ip_ct_attach indirection to struct nf_ct_hook

ip_ct_attach predates struct nf_ct_hook, we can place it there and
remove the exported symbol.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2 years agonetfilter: conntrack: convert to refcount_t api
Florian Westphal [Fri, 7 Jan 2022 04:03:22 +0000 (05:03 +0100)]
netfilter: conntrack: convert to refcount_t api

Convert nf_conn reference counting from atomic_t to refcount_t based api.
refcount_t api provides more runtime sanity checks and will warn on
certain constructs, e.g. refcount_inc() on a zero reference count, which
usually indicates use-after-free.

For this reason template allocation is changed to init the refcount to
1, the subsequenct add operations are removed.

Likewise, init_conntrack() is changed to set the initial refcount to 1
instead refcount_inc().

This is safe because the new entry is not (yet) visible to other cpus.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2 years agonetfilter: conntrack: Use max() instead of doing it manually
Jiapeng Chong [Sat, 25 Dec 2021 17:12:41 +0000 (01:12 +0800)]
netfilter: conntrack: Use max() instead of doing it manually

Fix following coccicheck warning:

./include/net/netfilter/nf_conntrack.h:282:16-17: WARNING opportunity
for max().

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2 years agonetfilter: nft_set_pipapo_avx2: remove redundant pointer lt
Colin Ian King [Tue, 21 Dec 2021 19:37:57 +0000 (19:37 +0000)]
netfilter: nft_set_pipapo_avx2: remove redundant pointer lt

The pointer lt is being assigned a value and then later
updated but that value is never read. The pointer is
redundant and can be removed.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2 years agonetfilter: flowtable: remove ipv4/ipv6 modules
Florian Westphal [Fri, 17 Dec 2021 14:10:55 +0000 (15:10 +0100)]
netfilter: flowtable: remove ipv4/ipv6 modules

Just place the structs and registration in the inet module.
nf_flow_table_ipv6, nf_flow_table_ipv4 and nf_flow_table_inet share
same module dependencies: nf_flow_table, nf_tables.

before:
   text    data     bss     dec     hex filename
   2278    1480       0    3758     eae nf_flow_table_inet.ko
   1159    1352       0    2511     9cf nf_flow_table_ipv6.ko
   1154    1352       0    2506     9ca nf_flow_table_ipv4.ko

after:
   2369    1672       0    4041     fc9 nf_flow_table_inet.ko

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2 years agonetfilter: nat: force port remap to prevent shadowing well-known ports
Florian Westphal [Fri, 17 Dec 2021 10:29:57 +0000 (11:29 +0100)]
netfilter: nat: force port remap to prevent shadowing well-known ports

If destination port is above 32k and source port below 16k
assume this might cause 'port shadowing' where a 'new' inbound
connection matches an existing one, e.g.

inbound X:41234 -> Y:53 matches existing conntrack entry
        Z:53 -> X:4123, where Z got natted to X.

In this case, new packet is natted to Z:53 which is likely
unwanted.

We avoid the rewrite for connections that originate from local host:
port-shadowing is only possible with forwarded connections.

Also adjust test case.

v3: no need to call tuple_force_port_remap if already in random mode (Phil)

Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: Phil Sutter <phil@nwl.cc>
Acked-by: Eric Garver <eric@garver.life>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2 years agonetfilter: conntrack: tag conntracks picked up in local out hook
Florian Westphal [Fri, 17 Dec 2021 10:29:56 +0000 (11:29 +0100)]
netfilter: conntrack: tag conntracks picked up in local out hook

This allows to identify flows that originate from local machine
in a followup patch.

It would be possible to make this a ->status bit instead.
For now I did not do that yet because I don't have a use-case for
exposing this info to userspace.

If one comes up the toggle can be replaced with a status bit.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2 years agonetfilter: nf_tables: make counter support built-in
Pablo Neira Ayuso [Fri, 17 Dec 2021 19:37:34 +0000 (20:37 +0100)]
netfilter: nf_tables: make counter support built-in

Make counter support built-in to allow for direct call in case of
CONFIG_RETPOLINE.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2 years agonetfilter: nf_tables: replace WARN_ON by WARN_ON_ONCE for unknown verdicts
Pablo Neira Ayuso [Thu, 9 Dec 2021 23:11:45 +0000 (00:11 +0100)]
netfilter: nf_tables: replace WARN_ON by WARN_ON_ONCE for unknown verdicts

Bug might trigger warning for each packet, call WARN_ON_ONCE instead.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2 years agonetfilter: nf_tables: consolidate rule verdict trace call
Pablo Neira Ayuso [Thu, 9 Dec 2021 23:10:12 +0000 (00:10 +0100)]
netfilter: nf_tables: consolidate rule verdict trace call

Add function to consolidate verdict tracing.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2 years agonetfilter: nft_payload: WARN_ON_ONCE instead of BUG
Pablo Neira Ayuso [Thu, 9 Dec 2021 23:09:49 +0000 (00:09 +0100)]
netfilter: nft_payload: WARN_ON_ONCE instead of BUG

BUG() is too harsh for unknown payload base, use WARN_ON_ONCE() instead.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2 years agonetfilter: nf_tables: remove rcu read-size lock
Pablo Neira Ayuso [Thu, 9 Dec 2021 23:06:44 +0000 (00:06 +0100)]
netfilter: nf_tables: remove rcu read-size lock

Chain stats are updated from the Netfilter hook path which already run
under rcu read-size lock section.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2 years agonetfilter: nf_nat_masquerade: add netns refcount tracker to masq_dev_work
Eric Dumazet [Mon, 13 Dec 2021 16:40:00 +0000 (08:40 -0800)]
netfilter: nf_nat_masquerade: add netns refcount tracker to masq_dev_work

If compiled with CONFIG_NET_NS_REFCNT_TRACKER=y,
using put_net_track() in iterate_cleanup_work()
and netns_tracker_alloc() in nf_nat_masq_schedule()
might help us finding netns refcount imbalances.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2 years agonetfilter: nfnetlink: add netns refcount tracker to struct nfulnl_instance
Eric Dumazet [Mon, 13 Dec 2021 16:39:59 +0000 (08:39 -0800)]
netfilter: nfnetlink: add netns refcount tracker to struct nfulnl_instance

If compiled with CONFIG_NET_NS_REFCNT_TRACKER=y,
using put_net_track() in nfulnl_instance_free_rcu()
and get_net_track() in instance_create()
might help us finding netns refcount imbalances.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2 years agonet: prestera: flower template support
Volodymyr Mytnyk [Wed, 15 Dec 2021 10:07:30 +0000 (12:07 +0200)]
net: prestera: flower template support

Add user template explicit support. At this moment, max
TCAM rule size is utilized for all rules, doesn't matter
which and how much flower matches are provided by user. It
means that some of TCAM space is wasted, which impacts
the number of filters that can be offloaded.

Introducing the template, allows to have more HW offloaded
filters by specifying the template explicitly.

Example:
  tc qd add dev PORT clsact
  tc chain add dev PORT ingress protocol ip \
    flower dst_ip 0.0.0.0/16
  tc filter add dev PORT ingress protocol ip \
    flower skip_sw dst_ip 1.2.3.4/16 action drop

NOTE: chain 0 is the default chain id for "tc chain" & "tc filter"
      command, so it is omitted in the example above.

This patch adds only template support for default chain 0 suppoerted
by prestera driver at this moment. Chains are not supported yet,
and will be added later.

Signed-off-by: Volodymyr Mytnyk <vmytnyk@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: dsa: rtl8365mb: add GMII as user port mode
Luiz Angelo Daros de Luca [Wed, 15 Dec 2021 03:41:28 +0000 (00:41 -0300)]
net: dsa: rtl8365mb: add GMII as user port mode

Recent net-next fails to initialize ports with:

 realtek-smi switch: phy mode gmii is unsupported on port 0
 realtek-smi switch lan5 (uninitialized): validation of gmii with
 support 0000000,00000000,000062ef and advertisement
 0000000,00000000,000062ef failed: -22
 realtek-smi switch lan5 (uninitialized): failed to connect to PHY:
 -EINVAL
 realtek-smi switch lan5 (uninitialized): error -22 setting up PHY
 for tree 1, switch 0, port 0

Current net branch(3dd7d40b43663f58d11ee7a3d3798813b26a48f1) is not
affected.

I also noticed the same issue before with older versions but using
a MDIO interface driver, not realtek-smi.

Tested-by: Arınç ÜNAL <arinc.unal@arinc9.com>
Signed-off-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoMerge branch 'gve-improvements'
David S. Miller [Thu, 16 Dec 2021 10:41:54 +0000 (10:41 +0000)]
Merge branch 'gve-improvements'

Jeroen de Borst says:

====================
gve improvements

This patchset consists of unrelated changes:

A bug fix for an issue that disabled jumbo-frame support, a few code
improvements and minor funcitonal changes and 3 new features:
  Supporting tx|rx-coalesce-usec for DQO
  Suspend/resume/shutdown
  Optional metadata descriptors
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agogve: Add tx|rx-coalesce-usec for DQO
Tao Liu [Thu, 16 Dec 2021 00:46:52 +0000 (16:46 -0800)]
gve: Add tx|rx-coalesce-usec for DQO

Adding ethtool support for changing rx-coalesce-usec and tx-coalesce-usec
when using the DQO queue format.

Signed-off-by: Tao Liu <xliutaox@google.com>
Signed-off-by: Jeroen de Borst <jeroendb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agogve: Add consumed counts to ethtool stats
Jordan Kim [Thu, 16 Dec 2021 00:46:51 +0000 (16:46 -0800)]
gve: Add consumed counts to ethtool stats

Being able to see how many descriptors are in-use is helpful
when diagnosing certain issues.

Signed-off-by: Jeroen de Borst <jeroendb@google.com>
Signed-off-by: Jordan Kim <jrkim@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agogve: Implement suspend/resume/shutdown
Catherine Sullivan [Thu, 16 Dec 2021 00:46:50 +0000 (16:46 -0800)]
gve: Implement suspend/resume/shutdown

Add support for suspend, resume and shutdown.

Signed-off-by: Catherine Sullivan <csully@google.com>
Signed-off-by: David Awogbemila <awogbemila@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agogve: Add optional metadata descriptor type GVE_TXD_MTD
Willem de Bruijn [Thu, 16 Dec 2021 00:46:49 +0000 (16:46 -0800)]
gve: Add optional metadata descriptor type GVE_TXD_MTD

Allow drivers to pass metadata along with packet data to the device.
Introduce a new metadata descriptor type

* GVE_TXD_MTD

This descriptor is optional. If present it immediate follows the
packet descriptor and precedes the segment descriptor.

This descriptor may be repeated. Multiple metadata descriptors may
follow. There are no immediate uses for this, this is for future
proofing. At present devices allow only 1 MTD descriptor.

The lower four bits of the type_flags field encode GVE_TXD_MTD.
The upper four bits of the type_flags field encodes a *sub*type.

Introduce one such metadata descriptor subtype

* GVE_MTD_SUBTYPE_PATH

This shares path information with the device for network failure
discovery and robust response:

Linux derives ipv6 flowlabel and ECMP multipath from sk->sk_txhash,
and updates this field on error with sk_rethink_txhash. Allow the host
stack to do the same. Pass the tx_hash value if set. Also communicate
whether the path hash is set, or more exactly, what its type is. Define
two common types

  GVE_MTD_PATH_HASH_NONE
  GVE_MTD_PATH_HASH_L4

Concrete examples of error conditions that are resolved are
mentioned in the commits that add sk_rethink_txhash calls. Such as
commit 7788174e8726 ("tcp: change IPv6 flow-label upon receiving
spurious retransmission").

Experimental results mirror what the theory suggests: where IPv6
FlowLabel is included in path selection (e.g., LAG/ECMP), flowlabel
rotation on TCP timeout avoids the vast majority of TCP disconnects
that would otherwise have occurred during link failures in long-haul
backbones, when an alternative path is available.

Rotation can be applied to various bad connection signals, such as
timeouts and spurious retransmissions. In aggregate, such flow level
signals can help locate network issues. Define initial common states:

  GVE_MTD_PATH_STATE_DEFAULT
  GVE_MTD_PATH_STATE_TIMEOUT
  GVE_MTD_PATH_STATE_CONGESTION
  GVE_MTD_PATH_STATE_RETRANSMIT

Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David Awogbemila <awogbemila@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agogve: remove memory barrier around seqno
Catherine Sullivan [Thu, 16 Dec 2021 00:46:48 +0000 (16:46 -0800)]
gve: remove memory barrier around seqno

No longer needed after we introduced the barrier in gve_napi_poll.

Signed-off-by: Catherine Sullivan <csully@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agogve: Update gve_free_queue_page_list signature
Catherine Sullivan [Thu, 16 Dec 2021 00:46:47 +0000 (16:46 -0800)]
gve: Update gve_free_queue_page_list signature

The id field should be a u32 not a signed int.

Signed-off-by: Catherine Sullivan <csully@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agogve: Move the irq db indexes out of the ntfy block struct
Catherine Sullivan [Thu, 16 Dec 2021 00:46:46 +0000 (16:46 -0800)]
gve: Move the irq db indexes out of the ntfy block struct

Giving the device access to other kernel structs is not ideal.
Move the indexes into their own array and just keep pointers to
them in the ntfy block struct.

Signed-off-by: Catherine Sullivan <csully@google.com>
Signed-off-by: David Awogbemila <awogbemila@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agogve: Correct order of processing device options
Jeroen de Borst [Thu, 16 Dec 2021 00:46:45 +0000 (16:46 -0800)]
gve: Correct order of processing device options

The legacy raw addressing device option was processed before the
new RDA queue format option.  This caused the supported features mask,
which is provided only on the RDA queue format option, not to be set.

This disabled jumbo-frame support when using raw adressing.

Fixes: 255489f5b33c ("gve: Add a jumbo-frame device option")
Signed-off-by: Jeroen de Borst <jeroendb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoMerge branch 'phylink-pcs-validation'
David S. Miller [Thu, 16 Dec 2021 10:37:14 +0000 (10:37 +0000)]
Merge branch 'phylink-pcs-validation'

Russell King says:

====================
net: phylink: add PCS validation

This series allows phylink to include the PCS in its validation step.
There are two reasons to make this change:

1. Some of the network drivers that are making use of the split PCS
   support are already manually calling into their PCS drivers to
   perform validation. E.g. stmmac with xpcs.

2. Logically, some network drivers such as mvneta and mvpp2, the
   restriction we impose in the validate() callback is a property of
   the "PCS" block that we provide rather than the MAC.

This series:

1. Gives phylink a mechanism to query the MAC driver which PCS is
   wishes to use for the PHY interface mode. This is necessary to allow
   the PCS to be involved in the validation step without making changes
   to the configuration.

2. Provide a pcs_validate() method that PCS can implement. This follows
   a similar model to the MAC's validate() callback, but with some minor
   differences due to observations from the various implementations.
   E.g. returning an error code for not-supported and the way the
   advertising bitmap is masked.

3. Convert mvpp2 and mvneta to this as examples of its use. Further
   Conversions are in the pipeline, including for stmmac+xpcs, as well
   as some DSA drivers. Note that DSA conversion to this is conditional
   upon all DSA drivers populating their supported_interfaces bitmap,
   since this is required before mac_select_pcs() can be used.

Existing drivers that set a PCS in mac_prepare() or mac_config(), or
shortly after phylink_create() will continue to work. However, it should
be noted that mac_select_pcs() will be called during phylink_create(),
and thus any PCS returned by mac_select_pcs() must be available by this
time - or we drop the check in phylink_create().

v2: fix kerneldoc typo in patch 1.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: mvneta: convert to pcs_validate() and phylink_generic_validate()
Russell King (Oracle) [Wed, 15 Dec 2021 15:34:45 +0000 (15:34 +0000)]
net: mvneta: convert to pcs_validate() and phylink_generic_validate()

Convert mvneta to validate the autoneg state for 1000base-X in the
pcs_validate() operation, rather than the MAC validate() operation.
This allows us to switch the MAC validate() to use
phylink_generic_validate().

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: mvneta: convert to phylink pcs operations
Russell King [Wed, 15 Dec 2021 15:34:40 +0000 (15:34 +0000)]
net: mvneta: convert to phylink pcs operations

An initial stab at converting mvneta to PCS operations.  There's a few
FIXMEs to be solved.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: mvneta: convert to use mac_prepare()/mac_finish()
Russell King [Wed, 15 Dec 2021 15:34:35 +0000 (15:34 +0000)]
net: mvneta: convert to use mac_prepare()/mac_finish()

Convert mvneta to use the mac_prepare() and mac_finish() methods in
preparation to converting mvneta to split-PCS support.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: mvpp2: convert to pcs_validate() and phylink_generic_validate()
Russell King (Oracle) [Wed, 15 Dec 2021 15:34:30 +0000 (15:34 +0000)]
net: mvpp2: convert to pcs_validate() and phylink_generic_validate()

Convert mvpp2 to validate the autoneg state for 1000base-X in the
pcs_validate() operation, rather than the MAC validate() operation.
This allows us to switch the MAC validate() to use
phylink_generic_validate().

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: mvpp2: use .mac_select_pcs() interface
Russell King (Oracle) [Wed, 15 Dec 2021 15:34:25 +0000 (15:34 +0000)]
net: mvpp2: use .mac_select_pcs() interface

Use the mac_select_pcs() method to choose between the GMAC and XLG
PCS implementations.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: phylink: add pcs_validate() method
Russell King (Oracle) [Wed, 15 Dec 2021 15:34:20 +0000 (15:34 +0000)]
net: phylink: add pcs_validate() method

Add a hook for PCS to validate the link parameters. This avoids MAC
drivers having to have knowledge of their PCS in their validate()
method, thereby allowing several MAC drivers to be simplfied.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: phylink: add mac_select_pcs() method to phylink_mac_ops
Russell King (Oracle) [Wed, 15 Dec 2021 15:34:15 +0000 (15:34 +0000)]
net: phylink: add mac_select_pcs() method to phylink_mac_ops

mac_select_pcs() allows us to have an explicit point to query which
PCS the MAC wishes to use for a particular PHY interface mode, thereby
allowing us to add support to validate the link settings with the PCS.

Phylink will also use this to select the PCS to be used during a major
configuration event without the MAC driver needing to call
phylink_set_pcs().

Note that if mac_select_pcs() is present, the supported_interfaces
bitmap must be filled in; this avoids mac_select_pcs() being called
with PHY_INTERFACE_MODE_NA when we want to get support for all
interface types. Phylink will return an error in phylink_create()
unless this condition is satisfied.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoMerge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/nex
David S. Miller [Thu, 16 Dec 2021 10:23:34 +0000 (10:23 +0000)]
Merge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/nex
t-queue

Tony Nguyen says:

====================
100GbE Intel Wired LAN Driver Updates 2021-12-15

This series contains updates to ice driver only.

Jake makes changes to flash update. This includes the following:

 * a new shadow-ram region similar to NVM region but for the device shadow
   RAM contents. This is distinct from NVM region because shadow RAM is
   built up during device init and may be different from the raw NVM flash
   data.
 * refactoring of the ice_flash_pldm_image to become the main flash update
   entry point. This is simpler than having both an
   ice_devlink_flash_update and an ice_flash_pldm_image. It will make
   additions like dry-run easier in the future.
 * reducing time to read Option ROM version information.
 * adding support for firmware activation via devlink reload, when
   possible.

The major new work is the reload support, which allows activating firmware
immediately without a reboot when possible. Reload support only supports
firmware activation.

Jesse improves transmit code: utilizing newer netif_tx* API, adding some
prefetch calls, correcting expected conditions when calling ice_vsi_down(),
and utilizing __netdev_tx_sent_queue() call.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoMerge branch 'mlx5-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mellanox...
David S. Miller [Thu, 16 Dec 2021 10:22:20 +0000 (10:22 +0000)]
Merge branch 'mlx5-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux

Saeed Mahameed says:

====================
mlx5-next branch 2021-12-15

Hi Dave, Jakub, Jason

This pulls mlx5-next branch into net-next and rdma branches.
All patches already reviewed on both rdma and netdev mailing lists.

Please pull and let me know if there's any problem.

1) Add multiple FDB steering priorities [1]
2) Introduce HW bits needed to configure MAC list size of VF/SF.
   Required for ("net/mlx5: Memory optimizations") upcoming series [2].

[1] https://lore.kernel.org/netdev/20211201193621.9129-1-saeed@kernel.org/
[2] https://lore.kernel.org/lkml/20211208141722.13646-1-shayd@nvidia.com/
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next
Jakub Kicinski [Thu, 16 Dec 2021 01:29:27 +0000 (17:29 -0800)]
Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next

Pablo Neira Ayuso says:

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

The following patchset contains Netfilter updates for net-next, mostly
rather small housekeeping patches:

1) Remove unused variable in IPVS, from GuoYong Zheng.

2) Use memset_after in conntrack, from Kees Cook.

3) Remove leftover function in nfnetlink_queue, from Florian Westphal.

4) Remove redundant test on bool in conntrack, from Bernard Zhao.

5) egress support for nft_fwd, from Lukas Wunner.

6) Make pppoe work for br_netfilter, from Florian Westphal.

7) Remove unused variable in conntrack resize routine, from luo penghao.

* git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next:
  netfilter: conntrack: Remove useless assignment statements
  netfilter: bridge: add support for pppoe filtering
  netfilter: nft_fwd_netdev: Support egress hook
  netfilter: ctnetlink: remove useless type conversion to bool
  netfilter: nf_queue: remove leftover synchronize_rcu
  netfilter: conntrack: Use memset_startat() to zero struct nf_conn
  ipvs: remove unused variable for ip_vs_new_dest
====================

Link: https://lore.kernel.org/r/20211215234911.170741-1-pablo@netfilter.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonetfilter: conntrack: Remove useless assignment statements
luo penghao [Wed, 8 Dec 2021 07:57:06 +0000 (07:57 +0000)]
netfilter: conntrack: Remove useless assignment statements

The old_size assignment here will not be used anymore

The clang_analyzer complains as follows:

Value stored to 'old_size' is never read

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: luo penghao <luo.penghao@zte.com.cn>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2 years agonet/mlx5: Introduce log_max_current_uc_list_wr_supported bit
Shay Drory [Thu, 9 Dec 2021 10:09:23 +0000 (12:09 +0200)]
net/mlx5: Introduce log_max_current_uc_list_wr_supported bit

Downstream patch will use this bit in order to know whether the device
supports changing of max_uc_list.

Signed-off-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2 years agoice: use modern kernel API for kick
Jesse Brandeburg [Tue, 26 Oct 2021 00:08:26 +0000 (17:08 -0700)]
ice: use modern kernel API for kick

The kernel gained a new interface for drivers to use to combine tail
bump (doorbell) and BQL updates, attempt to use those new interfaces.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Gurucharan G <gurucharanx.g@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2 years agoice: tighter control over VSI_DOWN state
Jesse Brandeburg [Tue, 26 Oct 2021 00:08:25 +0000 (17:08 -0700)]
ice: tighter control over VSI_DOWN state

The driver had comments to the effect of: This flag should be set before
calling this function. While reviewing code it was found that there were
several violations of this policy, which could introduce hard to find
bugs or races.

Fix the violations of the "VSI DOWN state must be set before calling
ice_down" and make checking the state into code with a WARN_ON.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Gurucharan G <gurucharanx.g@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2 years agoice: use prefetch methods
Jesse Brandeburg [Wed, 27 Oct 2021 19:38:36 +0000 (12:38 -0700)]
ice: use prefetch methods

The kernel provides some prefetch mechanisms to speed up commonly
cold cache line accesses during receive processing. Since these are
software structures it helps to have these strategically placed
prefetches.

Be careful to call BQL prefetch complete only for non XDP queues.

Co-developed-by: Piotr Raczynski <piotr.raczynski@intel.com>
Signed-off-by: Piotr Raczynski <piotr.raczynski@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Gurucharan G <gurucharanx.g@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2 years agoice: update to newer kernel API
Jesse Brandeburg [Tue, 26 Oct 2021 00:08:23 +0000 (17:08 -0700)]
ice: update to newer kernel API

Use the netif_tx_* API from netdevice.h which has simpler parameters.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Gurucharan G <gurucharanx.g@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2 years agoice: support immediate firmware activation via devlink reload
Jacob Keller [Wed, 27 Oct 2021 23:22:55 +0000 (16:22 -0700)]
ice: support immediate firmware activation via devlink reload

The ice hardware contains an embedded chip with firmware which can be
updated using devlink flash. The firmware which runs on this chip is
referred to as the Embedded Management Processor firmware (EMP
firmware).

Activating the new firmware image currently requires that the system be
rebooted. This is not ideal as rebooting the system can cause unwanted
downtime.

In practical terms, activating the firmware does not always require a
full system reboot. In many cases it is possible to activate the EMP
firmware immediately. There are a couple of different scenarios to
cover.

 * The EMP firmware itself can be reloaded by issuing a special update
   to the device called an Embedded Management Processor reset (EMP
   reset). This reset causes the device to reset and reload the EMP
   firmware.

 * PCI configuration changes are only reloaded after a cold PCIe reset.
   Unfortunately there is no generic way to trigger this for a PCIe
   device without a system reboot.

When performing a flash update, firmware is capable of responding with
some information about the specific update requirements.

The driver updates the flash by programming a secondary inactive bank
with the contents of the new image, and then issuing a command to
request to switch the active bank starting from the next load.

The response to the final command for updating the inactive NVM flash
bank includes an indication of the minimum reset required to fully
update the device. This can be one of the following:

 * A full power on is required
 * A cold PCIe reset is required
 * An EMP reset is required

The response to the command to switch flash banks includes an indication
of whether or not the firmware will allow an EMP reset request.

For most updates, an EMP reset is sufficient to load the new EMP
firmware without issues. In some cases, this reset is not sufficient
because the PCI configuration space has changed. When this could cause
incompatibility with the new EMP image, the firmware is capable of
rejecting the EMP reset request.

Add logic to ice_fw_update.c to handle the response data flash update
AdminQ commands.

For the reset level, issue a devlink status notification informing the
user of how to complete the update with a simple suggestion like
"Activate new firmware by rebooting the system".

Cache the status of whether or not firmware will restrict the EMP reset
for use in implementing devlink reload.

Implement support for devlink reload with the "fw_activate" flag. This
allows user space to request the firmware be activated immediately.

For the .reload_down handler, we will issue a request for the EMP reset
using the appropriate firmware AdminQ command. If we know that the
firmware will not allow an EMP reset, simply exit with a suitable
netlink extended ACK message indicating that the EMP reset is not
available.

For the .reload_up handler, simply wait until the driver has finished
resetting. Logic to handle processing of an EMP reset already exists in
the driver as part of its reset and rebuild flows.

Implement support for the devlink reload interface with the
"fw_activate" action. This allows userspace to request activation of
firmware without a reboot.

Note that support for indicating the required reset and EMP reset
restriction is not supported on old versions of firmware. The driver can
determine if the two features are supported by checking the device
capabilities report. I confirmed support has existed since at least
version 5.5.2 as reported by the 'fw.mgmt' version. Support to issue the
EMP reset request has existed in all version of the EMP firmware for the
ice hardware.

Check the device capabilities report to determine whether or not the
indications are reported by the running firmware. If the reset
requirement indication is not supported, always assume a full power on
is necessary. If the reset restriction capability is not supported,
always assume the EMP reset is available.

Users can verify if the EMP reset has activated the firmware by using
the devlink info report to check that the 'running' firmware version has
updated. For example a user might do the following:

 # Check current version
 $ devlink dev info

 # Update the device
 $ devlink dev flash pci/0000:af:00.0 file firmware.bin

 # Confirm stored version updated
 $ devlink dev info

 # Reload to activate new firmware
 $ devlink dev reload pci/0000:af:00.0 action fw_activate

 # Confirm running version updated
 $ devlink dev info

Finally, this change does *not* implement basic driver-only reload
support. I did look into trying to do this. However, it requires
significant refactor of how the ice driver probes and loads everything.
The ice driver probe and allocation flows were not designed with such
a reload in mind. Refactoring the flow to support this is beyond the
scope of this change.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Gurucharan G <gurucharanx.g@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2 years agoice: reduce time to read Option ROM CIVD data
Jacob Keller [Wed, 27 Oct 2021 23:22:54 +0000 (16:22 -0700)]
ice: reduce time to read Option ROM CIVD data

During probe and device reset, the ice driver reads some data from the
NVM image as part of ice_init_nvm. Part of this data includes a section
of the Option ROM which contains version information.

The function ice_get_orom_civd_data is used to locate the '$CIV' data
section of the Option ROM.

Timing of ice_probe and ice_rebuild indicate that the
ice_get_orom_civd_data function takes about 10 seconds to finish
executing.

The function locates the section by scanning the Option ROM every 512
bytes. This requires a significant number of NVM read accesses, since
the Option ROM bank is 500KB. In the worst case it would take about 1000
reads. Worse, all PFs serialize this operation during reload because of
acquiring the NVM semaphore.

The CIVD section is located at the end of the Option ROM image data.
Unfortunately, the driver has no easy method to determine the offset
manually. Practical experiments have shown that the data could be at
a variety of locations, so simply reversing the scanning order is not
sufficient to reduce the overall read time.

Instead, copy the entire contents of the Option ROM into memory. This
allows reading the data using 4Kb pages instead of 512 bytes at a time.
This reduces the total number of firmware commands by a factor of 8. In
addition, reading the whole section together at once allows better
indication to firmware of when we're "done".

Re-write ice_get_orom_civd_data to allocate virtual memory to store the
Option ROM data. Copy the entire OptionROM contents at once using
ice_read_flash_module. Finally, use this memory copy to scan for the
'$CIV' section.

This change significantly reduces the time to read the Option ROM CIVD
section from ~10 seconds down to ~1 second. This has a significant
impact on the total time to complete a driver rebuild or probe.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Gurucharan G <gurucharanx.g@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2 years agoice: move ice_devlink_flash_update and merge with ice_flash_pldm_image
Jacob Keller [Fri, 15 Oct 2021 23:13:03 +0000 (16:13 -0700)]
ice: move ice_devlink_flash_update and merge with ice_flash_pldm_image

The ice_devlink_flash_update function performs a few upfront checks and
then calls ice_flash_pldm_image.

Most if these checks make more sense in the context of code within
ice_flash_pldm_image. Merge ice_devlink_flash_update and
ice_flash_pldm_image into one function, placing it in ice_fw_update.c

Since this is still the entry point for devlink, call the function
ice_devlink_flash_update instead of ice_flash_pldm_image. This leaves a
single function which handles the devlink parameters and then initiates
a PLDM update.

With this change, the ice_devlink_flash_update function in
ice_fw_update.c becomes the main entry point for flash update. It
elimintes some unnecessary boiler plate code between the two previous
functions. The ultimate motivation for this is that it eases supporting
a dry run with the PLDM library in a future change.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Gurucharan G <gurucharanx.g@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2 years agoice: move and rename ice_check_for_pending_update
Jacob Keller [Tue, 12 Oct 2021 00:41:11 +0000 (17:41 -0700)]
ice: move and rename ice_check_for_pending_update

The ice_devlink_flash_update function performs a few checks and then
calls ice_flash_pldm_image. One of these checks is to call
ice_check_for_pending_update. This function checks if the device has
a pending update, and cancels it if so. This is necessary to allow
a new flash update to proceed.

We want to refactor the ice code to eliminate ice_devlink_flash_update,
moving its checks into ice_flash_pldm_image.

To do this, ice_check_for_pending_update will become static, and only
called by ice_flash_pldm_image. To make this change easier to review,
first just move the function up within the ice_fw_update.c file.

While at it, note that the function has a misleading name. Its primary
action is to cancel a pending update. Using the verb "check" does not
imply this. Rename it to ice_cancel_pending_update.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Gurucharan G <gurucharanx.g@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2 years agoice: devlink: add shadow-ram region to snapshot Shadow RAM
Jacob Keller [Tue, 12 Oct 2021 00:41:10 +0000 (17:41 -0700)]
ice: devlink: add shadow-ram region to snapshot Shadow RAM

We have a region for reading the contents of the NVM flash as
a snapshot. This region does not allow reading the Shadow RAM, as it
always passes the FLASH_ONLY bit to the low level firmware interface.

Add a separate shadow-ram region which will allow snapshot of the
current contents of the Shadow RAM. This data is built from the NVM
contents but is distinct as the device builds up the Shadow RAM during
initialization, so being able to snapshot its contents can be useful
when attempting to debug flash related issues.

Fix the comment description of the nvm-flash region which incorrectly
stated that it filled the shadow-ram region, and add a comment
explaining that the nvm-flash region does not actually read the Shadow
RAM.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Gurucharan G <gurucharanx.g@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2 years agoethtool: always write dev in ethnl_parse_header_dev_get
Jakub Kicinski [Tue, 14 Dec 2021 15:47:25 +0000 (07:47 -0800)]
ethtool: always write dev in ethnl_parse_header_dev_get

Commit 0976b888a150 ("ethtool: fix null-ptr-deref on ref tracker")
made the write to req_info.dev conditional, but as Eric points out
in a different follow up the structure is often allocated on the
stack and not kzalloc()'d so seems safer to always write the dev,
in case it's garbage on input.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: add net device refcount tracker to struct packet_type
Eric Dumazet [Tue, 14 Dec 2021 15:09:33 +0000 (07:09 -0800)]
net: add net device refcount tracker to struct packet_type

Most notable changes are in af_packet, tipc ones are trivial.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Jon Maloy <jmaloy@redhat.com>
Cc: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoMerge branch 'mlxsw-ipv6-underlay'
David S. Miller [Wed, 15 Dec 2021 15:05:44 +0000 (15:05 +0000)]
Merge branch 'mlxsw-ipv6-underlay'

Ido Schimmel says:

====================
mlxsw: Add support for VxLAN with IPv6 underlay

So far, mlxsw only supported VxLAN with IPv4 underlay. This patchset
extends mlxsw to also support VxLAN with IPv6 underlay. The main
difference is related to the way IPv6 addresses are handled by the
device. See patch #1 for a detailed explanation.

Patch #1 creates a common hash table to store the mapping from IPv6
addresses to KVDL indexes. This table is useful for both IP-in-IP and
VxLAN tunnels with an IPv6 underlay.

Patch #2 converts the IP-in-IP code to use the new hash table.

Patches #3-#6 are preparations.

Patch #7 finally adds support for VxLAN with IPv6 underlay.

Patch #8 removes a test case that checked that VxLAN configurations with
IPv6 underlay are vetoed by the driver.

A follow-up patchset will add forwarding selftests.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoselftests: mlxsw: vxlan: Remove IPv6 test case
Amit Cohen [Tue, 14 Dec 2021 14:25:51 +0000 (16:25 +0200)]
selftests: mlxsw: vxlan: Remove IPv6 test case

Currently, there is a test case to verify that VxLAN with IPv6 underlay
is forbidden.

Remove this test case as support for VxLAN with IPv6 underlay was added
by the previous patch.

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>
2 years agomlxsw: Add support for VxLAN with IPv6 underlay
Amit Cohen [Tue, 14 Dec 2021 14:25:50 +0000 (16:25 +0200)]
mlxsw: Add support for VxLAN with IPv6 underlay

Currently, mlxsw driver supports VxLAN with IPv4 underlay only.
Add support for IPv6 underlay.

The main differences are:

* Learning is not supported for IPv6 FDB entries, use static entries and
  do not allow 'learning' flag for IPv6 VxLAN.

* IPv6 addresses for FDB entries should be saved as part of KVDL.
  Use the new API to allocate and release entries for IPv6 addresses.

* Spectrum ASICs do not fill UDP checksum, while in software IPv6 UDP
  packets with checksum zero are dropped.
  Force the relevant flags which allow the VxLAN device to generate UDP
  packets with zero checksum and also receive them.

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>
2 years agomlxsw: spectrum_nve: Keep track of IPv6 addresses used by FDB entries
Amit Cohen [Tue, 14 Dec 2021 14:25:49 +0000 (16:25 +0200)]
mlxsw: spectrum_nve: Keep track of IPv6 addresses used by FDB entries

FDB entries that perform VxLAN encapsulation with an IPv6 underlay hold
a reference on a resource. Namely, the KVDL entry where the IPv6
underlay destination IP is stored. When such an FDB entry is deleted, it
needs to drop the reference from the corresponding KVDL entry.

To that end, maintain a hash table that maps an FDB entry (i.e., {MAC,
FID}) to the IPv6 address used by it.

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>
2 years agomlxsw: reg: Add a function to fill IPv6 unicast FDB entries
Amit Cohen [Tue, 14 Dec 2021 14:25:48 +0000 (16:25 +0200)]
mlxsw: reg: Add a function to fill IPv6 unicast FDB entries

Add a function to fill IPv6 unicast FDB entries. Use the common function
for common fields.

Unlike IPv4 entries, the underlay IP address is not filled in the
register payload, but instead a pointer to KVDL is used.

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>
2 years agomlxsw: Split handling of FDB tunnel entries between address families
Amit Cohen [Tue, 14 Dec 2021 14:25:47 +0000 (16:25 +0200)]
mlxsw: Split handling of FDB tunnel entries between address families

Currently, the function which adds/removes unicast tunnel FDB entries is
shared between IPv4 and IPv6, while for IPv6 it warns because there is
no support for it.

The code for IPv6 will be more complicated because it needs to
allocate/release a KVDL pointer for the underlay IPv6 address.

As a preparation for IPv6 underlay support, split the code according to
address family.

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>
2 years agomlxsw: spectrum_nve_vxlan: Make VxLAN flags check per address family
Amit Cohen [Tue, 14 Dec 2021 14:25:46 +0000 (16:25 +0200)]
mlxsw: spectrum_nve_vxlan: Make VxLAN flags check per address family

As part of 'can_offload' checks, there is a check of VxLAN flags.

The supported flags for IPv6 VxLAN will be different from the existing
flags because of some limitations.

As preparation for IPv6 underlay support, make this check per address
family.

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>
2 years agomlxsw: spectrum_ipip: Use common hash table for IPv6 address mapping
Amit Cohen [Tue, 14 Dec 2021 14:25:45 +0000 (16:25 +0200)]
mlxsw: spectrum_ipip: Use common hash table for IPv6 address mapping

Use the common hash table introduced by the previous patch instead of
the IP-in-IP specific implementation.

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>
2 years agomlxsw: spectrum: Add hash table for IPv6 address mapping
Amit Cohen [Tue, 14 Dec 2021 14:25:44 +0000 (16:25 +0200)]
mlxsw: spectrum: Add hash table for IPv6 address mapping

The device supports forwarding entries such as routes and FDBs that
perform tunnel (e.g., VXLAN, IP-in-IP) encapsulation or decapsulation.
When the underlay is IPv6, these entries do not encode the 128 bit IPv6
address used for encapsulation / decapsulation. Instead, these entries
encode a 24 bit pointer to an array called KVDL where the IPv6 address
is stored.

Currently, only IP-in-IP with IPv6 underlay is supported, but subsequent
patches will add support for VxLAN with IPv6 underlay. To avoid
duplicating the logic required to store and retrieve these IPv6
addresses, introduce a hash table that will store the mapping between
IPv6 addresses and their KVDL index.

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>
2 years agoMerge tag 'mlx5-updates-2021-12-14' of git://git.kernel.org/pub/scm/linux/kernel...
David S. Miller [Wed, 15 Dec 2021 14:46:33 +0000 (14:46 +0000)]
Merge tag 'mlx5-updates-2021-12-14' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux

Saed Mahameed says:

====================
mlx5-updates-2021-12-14

Parsing Infrastructure for TC actions:

The series introduce a TC action infrastructure to help
parsing TC actions in a generic way for both FDB and NIC rules.

To help maintain the parsing code of TC actions, we the parsing code to
action parser per action TC type in separate files, instead of having one
big switch case loop, duplicated between FDB and NIC parsers as before this
patchset.

Each TC flow_action->id is represented by a dedicated mlx5e_tc_act handler
which has callbacks to check if the specific action is offload supported and
to parse the specific action.

We move each case (TC action) handling into the specific handler, which is
responsible for parsing and determining if the action is supported.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoMerge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next...
David S. Miller [Wed, 15 Dec 2021 10:59:57 +0000 (10:59 +0000)]
Merge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue

Tony Nguyen says:

====================
100GbE Intel Wired LAN Driver Updates 2021-12-14

This series contains updates to ice driver only.

Haiyue adds support to query hardware for supported PTYPEs.

Jeff changes PTYPE validation to utilize the capabilities queried from
the hardware instead of maintaining a per DDP support list.

Brett refactors promiscuous functions to provide common and clear
interfaces to call for configuration.

Wojciech modifies DDP package load to simplify determining the final
state of the load.

Tony removes the use of ice_status from the driver. This involves
removing string conversion functions, converting variables and values to
standard errors, and clean up. He also removes an unused define.

Dan Carpenter removes unneeded casts.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: fec: fix system hang during suspend/resume
Joakim Zhang [Tue, 14 Dec 2021 10:50:46 +0000 (18:50 +0800)]
net: fec: fix system hang during suspend/resume

1. During normal suspend (WoL not enabled) process, system has posibility
to hang. The root cause is TXF interrupt coming after clocks disabled,
system hang when accessing registers from interrupt handler. To fix this
issue, disable all interrupts when system suspend.

2. System also has posibility to hang with WoL enabled during suspend,
after entering stop mode, then magic pattern coming after clocks
disabled, system will be waked up, and interrupt handler will be called,
system hang when access registers. To fix this issue, disable wakeup
irq in .suspend(), and enable it in .resume().

Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: ocelot: add support to get port mac from device-tree
Clément Léger [Tue, 14 Dec 2021 09:55:34 +0000 (10:55 +0100)]
net: ocelot: add support to get port mac from device-tree

Add support to get mac from device-tree using of_get_ethdev_address.

Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Clément Léger <clement.leger@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agosun4i-emac.c: remove unnecessary branch
Conley Lee [Tue, 14 Dec 2021 09:11:06 +0000 (17:11 +0800)]
sun4i-emac.c: remove unnecessary branch

According to the current implementation of emac_rx, every arrived packet
will be processed in the while loop. So, there is no remain packet last
time. The skb_last field and this branch for dealing with it is
unnecessary.

Signed-off-by: Conley Lee <conleylee@foxmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoethtool: use ethnl_parse_header_dev_put()
Eric Dumazet [Tue, 14 Dec 2021 08:42:30 +0000 (00:42 -0800)]
ethtool: use ethnl_parse_header_dev_put()

It seems I missed that most ethnl_parse_header_dev_get() callers
declare an on-stack struct ethnl_req_info, and that they simply call
dev_put(req_info.dev) when about to return.

Add ethnl_parse_header_dev_put() helper to properly untrack
reference taken by ethnl_parse_header_dev_get().

Fixes: e4b8954074f6 ("netlink: add net device refcount tracker to struct ethnl_req_info")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet/mlx5e: Move goto action checks into tc_action goto post parse op
Roi Dayan [Sun, 15 Aug 2021 10:23:14 +0000 (13:23 +0300)]
net/mlx5e: Move goto action checks into tc_action goto post parse op

Move goto action checks from parse nic/fdb funcs into the tc action
infra goto post parse op.
While moving this part also use NL_SET_ERR_MSG_MOD() instead of
NL_SET_ERR_MSG().

Signed-off-by: Roi Dayan <roid@nvidia.com>
Reviewed-by: Oz Shlomo <ozsh@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2 years agonet/mlx5e: Move vlan action chunk into tc action vlan post parse op
Roi Dayan [Mon, 23 Aug 2021 08:30:17 +0000 (11:30 +0300)]
net/mlx5e: Move vlan action chunk into tc action vlan post parse op

Move vlan prio tag rewrite handling into tc action infra vlan post parse op.

Signed-off-by: Roi Dayan <roid@nvidia.com>
Reviewed-by: Oz Shlomo <ozsh@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2 years agonet/mlx5e: Add post_parse() op to tc action infrastructure
Roi Dayan [Wed, 11 Aug 2021 11:19:56 +0000 (14:19 +0300)]
net/mlx5e: Add post_parse() op to tc action infrastructure

The post_parse() op should be called after the parse op was called
for all actions. It could be an action state is dependent on other
actions. In the new op an action can fail the parse if the state
is not valid anymore.

Signed-off-by: Roi Dayan <roid@nvidia.com>
Reviewed-by: Oz Shlomo <ozsh@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2 years agonet/mlx5e: Move sample attr allocation to tc_action sample parse op
Roi Dayan [Thu, 12 Aug 2021 13:02:58 +0000 (16:02 +0300)]
net/mlx5e: Move sample attr allocation to tc_action sample parse op

There is no reason to wait with the kmalloc to after parsing all
other actions. There could still be a failure later and before
offloading the rule. So alloc the mem when parsing.
The memory is being released on mlx5e_flow_put() which is called
also on error flow.

Signed-off-by: Roi Dayan <roid@nvidia.com>
Reviewed-by: Oz Shlomo <ozsh@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2 years agonet/mlx5e: TC action parsing loop
Roi Dayan [Sun, 25 Jul 2021 08:02:27 +0000 (11:02 +0300)]
net/mlx5e: TC action parsing loop

Introduce a common function to implement the generic parsing loop.
The same function can be used for parsing NIC and FDB (Switchdev mode) flows.

Signed-off-by: Roi Dayan <roid@nvidia.com>
Reviewed-by: Oz Shlomo <ozsh@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2 years agonet/mlx5e: Add redirect ingress to tc action infra
Roi Dayan [Tue, 16 Nov 2021 11:17:56 +0000 (13:17 +0200)]
net/mlx5e: Add redirect ingress to tc action infra

Add parsing support by implementing struct mlx5e_tc_act
for this action.

Signed-off-by: Roi Dayan <roid@nvidia.com>
Reviewed-by: Oz Shlomo <ozsh@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2 years agonet/mlx5e: Add sample and ptype to tc_action infra
Roi Dayan [Wed, 27 Oct 2021 06:52:36 +0000 (09:52 +0300)]
net/mlx5e: Add sample and ptype to tc_action infra

Add parsing support by implementing struct mlx5e_tc_act
for this action.

Signed-off-by: Roi Dayan <roid@nvidia.com>
Reviewed-by: Oz Shlomo <ozsh@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2 years agonet/mlx5e: Add ct to tc action infra
Roi Dayan [Wed, 21 Jul 2021 12:02:36 +0000 (15:02 +0300)]
net/mlx5e: Add ct to tc action infra

Add parsing support by implementing struct mlx5e_tc_act
for this action.

Signed-off-by: Roi Dayan <roid@nvidia.com>
Reviewed-by: Oz Shlomo <ozsh@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2 years agonet/mlx5e: Add mirred/redirect to tc action infra
Roi Dayan [Wed, 21 Jul 2021 07:27:50 +0000 (10:27 +0300)]
net/mlx5e: Add mirred/redirect to tc action infra

Add parsing support by implementing struct mlx5e_tc_act
for this action.

Signed-off-by: Roi Dayan <roid@nvidia.com>
Reviewed-by: Oz Shlomo <ozsh@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2 years agonet/mlx5e: Add mpls push/pop to tc action infra
Roi Dayan [Wed, 21 Jul 2021 08:25:35 +0000 (11:25 +0300)]
net/mlx5e: Add mpls push/pop to tc action infra

Add parsing support by implementing struct mlx5e_tc_act
for this action.

Signed-off-by: Roi Dayan <roid@nvidia.com>
Reviewed-by: Oz Shlomo <ozsh@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2 years agonet/mlx5e: Add vlan push/pop/mangle to tc action infra
Roi Dayan [Wed, 21 Jul 2021 07:28:55 +0000 (10:28 +0300)]
net/mlx5e: Add vlan push/pop/mangle to tc action infra

Add parsing support by implementing struct mlx5e_tc_act
for this action.

Signed-off-by: Roi Dayan <roid@nvidia.com>
Reviewed-by: Oz Shlomo <ozsh@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2 years agonet/mlx5e: Add pedit to tc action infra
Roi Dayan [Thu, 22 Jul 2021 12:26:25 +0000 (15:26 +0300)]
net/mlx5e: Add pedit to tc action infra

Add parsing support by implementing struct mlx5e_tc_act
for this action.

Signed-off-by: Roi Dayan <roid@nvidia.com>
Reviewed-by: Oz Shlomo <ozsh@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2 years agonet/mlx5e: Add csum to tc action infra
Roi Dayan [Wed, 21 Jul 2021 07:30:40 +0000 (10:30 +0300)]
net/mlx5e: Add csum to tc action infra

Add parsing support by implementing struct mlx5e_tc_act
for this action.

Signed-off-by: Roi Dayan <roid@nvidia.com>
Reviewed-by: Oz Shlomo <ozsh@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2 years agonet/mlx5e: Add tunnel encap/decap to tc action infra
Roi Dayan [Wed, 21 Jul 2021 07:29:37 +0000 (10:29 +0300)]
net/mlx5e: Add tunnel encap/decap to tc action infra

Add parsing support by implementing struct mlx5e_tc_act
for this action.

Signed-off-by: Roi Dayan <roid@nvidia.com>
Reviewed-by: Oz Shlomo <ozsh@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2 years agonet/mlx5e: Add goto to tc action infra
Roi Dayan [Wed, 21 Jul 2021 07:26:41 +0000 (10:26 +0300)]
net/mlx5e: Add goto to tc action infra

Add parsing support by implementing struct mlx5e_tc_act
for this action.

Signed-off-by: Roi Dayan <roid@nvidia.com>
Reviewed-by: Oz Shlomo <ozsh@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2 years agonet/mlx5e: Add tc action infrastructure
Roi Dayan [Mon, 12 Jul 2021 11:13:10 +0000 (14:13 +0300)]
net/mlx5e: Add tc action infrastructure

Add an infrastructure to help parsing tc actions in a generic way.

Supporting an action parser means implementing struct mlx5e_tc_act
for that action.

The infrastructure will give the possibility to be generic when parsing tc
actions, i.e. parse_tc_nic_actions() and parse_tc_fdb_actions().
To parse tc actions a user needs to allocate a parse_state instance
and pass it when iterating over the tc actions parsers.
If a parser doesn't exists then a user can treat it as unsupported.

To add an action parser a user needs to implement two callbacks.
The can_offload() callback to quickly check if an action can be offloaded.
The parse_action() callback to do actual parsing and prepare for offload.

Add implementation for drop, trap, mark and accept action parsers with this
commit to act as examples and implement usage of the new infrastructure for
those actions.

Signed-off-by: Roi Dayan <roid@nvidia.com>
Reviewed-by: Oz Shlomo <ozsh@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2 years agoMerge branch 'net-dsa-hellcreek-fix-handling-of-mgmt-protocols'
Jakub Kicinski [Wed, 15 Dec 2021 02:46:31 +0000 (18:46 -0800)]
Merge branch 'net-dsa-hellcreek-fix-handling-of-mgmt-protocols'

Kurt Kanzenbach says:

====================
net: dsa: hellcreek: Fix handling of MGMT protocols

this series fixes some minor issues with regards to management protocols
such as PTP and STP in the hellcreek DSA driver. Configure static FDB
for these protocols. The end result is:

|root@tsn:~# mv88e6xxx_dump --atu
|Using device <platform/ff240000.switch>
|ATU:
|FID  MAC               0123 Age OBT Pass Static Reprio Prio
|   0 01:1b:19:00:00:00 1100   1               X       X    6
|   1 01:00:5e:00:01:81 1100   1               X       X    6
|   2 33:33:00:00:01:81 1100   1               X       X    6
|   3 01:80:c2:00:00:0e 1100   1        X      X       X    6
|   4 01:00:5e:00:00:6b 1100   1        X      X       X    6
|   5 33:33:00:00:00:6b 1100   1        X      X       X    6
|   6 01:80:c2:00:00:00 1100   1        X      X       X    6

Previous version:
 * https://lore.kernel.org/r/20211213101810.121553-1-kurt@linutronix.de/

Changes since v1:
 * Target net-next, as this never worked correctly and is not critical
 * Add STP and PTP over UDP rules
 * Use pass_blocked for PDelay messages only (Richard Cochran)
====================

Link: https://lore.kernel.org/r/20211214134508.57806-1-kurt@linutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet: dsa: hellcreek: Add missing PTP via UDP rules
Kurt Kanzenbach [Tue, 14 Dec 2021 13:45:08 +0000 (14:45 +0100)]
net: dsa: hellcreek: Add missing PTP via UDP rules

The switch supports PTP for UDP transport too. Therefore, add the missing static
FDB entries to ensure correct forwarding of these packets.

Fixes: ddd56dfe52c9 ("net: dsa: hellcreek: Add PTP clock support")
Signed-off-by: Kurt Kanzenbach <kurt@linutronix.de>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet: dsa: hellcreek: Allow PTP P2P measurements on blocked ports
Kurt Kanzenbach [Tue, 14 Dec 2021 13:45:07 +0000 (14:45 +0100)]
net: dsa: hellcreek: Allow PTP P2P measurements on blocked ports

Allow PTP peer delay measurements on blocked ports by STP. In case of topology
changes the PTP stack can directly start with the correct delays.

Fixes: ddd56dfe52c9 ("net: dsa: hellcreek: Add PTP clock support")
Signed-off-by: Kurt Kanzenbach <kurt@linutronix.de>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet: dsa: hellcreek: Add STP forwarding rule
Kurt Kanzenbach [Tue, 14 Dec 2021 13:45:06 +0000 (14:45 +0100)]
net: dsa: hellcreek: Add STP forwarding rule

Treat STP as management traffic. STP traffic is designated for the CPU port
only. In addition, STP traffic has to pass blocked ports.

Fixes: e4b27ebc780f ("net: dsa: Add DSA driver for Hirschmann Hellcreek switches")
Signed-off-by: Kurt Kanzenbach <kurt@linutronix.de>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>