Rules are the actual objects that tie matchers, header values and
actions. Each rule belongs to a matcher, which can hold multiple rules
sharing the same mask. Each rule is a specific set of values and
actions.
When a packet reaches a matcher it is being matched against the
matcher`s rules. In case of a match over a rule its actions will be
executed. Each rule object contains a set of STEs, where each STE is a
definition of match values and actions defined by the rule.
This file handles the rule operations and processing.
Signed-off-by: Alex Vesker <valex@mellanox.com>
Signed-off-by: Erez Shitrit <erezsh@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
On rule creation a set of actions can be provided, the actions describe
what to do with the packet in case of a match. It is possible to provide
a set of actions which will be done by order.
Signed-off-by: Alex Vesker <valex@mellanox.com>
Reviewed-by: Erez Shitrit <erezsh@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Matcher defines which packets fields are matched when a packet arrives.
Matcher is a part of a table and can contain one or more rules. Where
rule defines specific values of the matcher's mask definition.
Signed-off-by: Alex Vesker <valex@mellanox.com>
Reviewed-by: Erez Shitrit <erezsh@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Tables are objects which are used for storing matchers, each table
belongs to a domain and defined by the domain type. When a packet
reaches the table it is being processed by each of its matchers until a
successful match. Tables can hold multiple matchers ordered by matcher
priority. Each table has a level.
Signed-off-by: Alex Vesker <valex@mellanox.com>
Reviewed-by: Erez Shitrit <erezsh@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Domain is the frame for all of the dr (direct rule) objects.
There are different domain types which also affect the object under that
domain. Each domain can hold multiple tables which can hold multiple
matchers and so on, this means that all of the dr (direct rule) objects
exist under a specific domain. The domain object also holds the
resources needed for other objects such as memory management and
communication with the device.
Signed-off-by: Alex Vesker <valex@mellanox.com>
Reviewed-by: Erez Shitrit <erezsh@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Steering Entry (STE) object is the basic building block of the steering
map. There are several types of STEs. Each rule can be constructed of
multiple STEs. Each STE dictates which fields of the packet's header are
being matched as well as the information about the next step in map (hit
and miss pointers). The hardware gets a packet and tries to match it
against the STEs, going to either the hit pointer or the miss pointer.
This file handles the STE operations.
Signed-off-by: Alex Vesker <valex@mellanox.com>
Signed-off-by: Erez Shitrit <erezsh@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Inserting or deleting a rule is done by RDMA read/write operation to SW
ICM device memory. This file provides the support for executing these
operations. It includes allocating the needed resources and providing an
API for writing steering entries to the memory.
Signed-off-by: Alex Vesker <valex@mellanox.com>
Signed-off-by: Mark Bloch <markb@mellanox.com>
Reviewed-by: Erez Shitrit <erezsh@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
ICM device memory is used for writing steering rules (STEs) to the NIC.
An ICM memory pool allocator was implemented to manage the required
memory. The pool consists of buckets, a bucket per chunk size.
Once a bucket is empty we will cut a row of memory from the latest
allocated MR, if the MR size is not sufficient we will allocate a new MR.
HW design requires that chunks memory address should be aligned to the
chunk size, this is the reason for managing the MR with row size that
insures memory alignment.
Current design is greedy in memory but provides quick allocation times
in steady state.
Signed-off-by: Alex Vesker <valex@mellanox.com>
Reviewed-by: Erez Shitrit <erezsh@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Add direct rule command utilities which consists of all the FW
commands that are executed to provide the SW steering functionality.
Signed-off-by: Alex Vesker <valex@mellanox.com>
Reviewed-by: Erez Shitrit <erezsh@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Add the internal header file that contains various types
definition that will be used in coming patches as well as
the internal functions decelerations.
Signed-off-by: Alex Vesker <valex@mellanox.com>
Signed-off-by: Yevgeny Kliteynik <kliteyn@mellanox.com>
Reviewed-by: Erez Shitrit <erezsh@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Add flow steering actions: modify header and packet reformat
to the fs_cmd shim layer. This allows each namespace to define
possibly different functionality for alloc/dealloc action commands.
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Merge mlx5-next patches needed for upcoming mlx5 software steering.
1) Alex adds HW bits and definitions required for SW steering
2) Ariel moves device memory management to mlx5_core (From mlx5_ib)
3) Maor, Cleanups and fixups for eswitch mode and RoCE
4) Mark, Set only stag for match untagged packets
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
cvlan_tag enabled in match criteria and disabled in
match value means both S & C tags don't exist (untagged of both).
Signed-off-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Return MLX5_ESWITCH_NONE when CONFIG_MLX5_ESWITCH
is not selected.
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Move the check if RoCE steering is initialized to the
disable RoCE function, it will ensure that we disable
RoCE only if we succeeded in enabling it before.
Fixes: 80f09dfc23 ("net/mlx5: Eswitch, enable RoCE loopback traffic")
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Move the device memory allocation and deallocation commands
SW ICM memory to mlx5_core to expose this API for all
mlx5_core users.
This comes as preparation for supporting SW steering in kernel
where it will be required to allocate and register device
memory for direct rule insertion.
In addition, an API to register this device memory for future
remote access operations is introduced using the create_mkey
commands.
Signed-off-by: Ariel Levkovich <lariel@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Vivien Didelot says:
====================
net: dsa: mv88e6xxx: centralize SERDES IRQ handling
Following Marek's work on the abstraction of the SERDES lanes mapping, this
series trades the .serdes_irq_setup and .serdes_irq_free callbacks for new
.serdes_irq_mapping, .serdes_irq_enable and .serdes_irq_status operations.
This has the benefit to limit the various SERDES implementations to simple
register accesses only; centralize the IRQ handling and mutex locking logic;
as well as reducing boilerplate in the driver.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
The .serdes_irq_setup are all following the same steps: get the SERDES
lane, get the IRQ mapping, request the IRQ, then enable it. So do
the .serdes_irq_free implementations: get the SERDES lane, disable
the IRQ, then free it.
This patch removes these operations in favor of generic functions.
Signed-off-by: Vivien Didelot <vivien.didelot@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Introduce a new .serdes_irq_status operation to prepare the abstraction
of IRQ thread from the SERDES IRQ setup code.
Signed-off-by: Vivien Didelot <vivien.didelot@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Introduce a new .serdes_irq_enable operation to prepare the abstraction
of IRQ enabling from the SERDES IRQ setup code.
Signed-off-by: Vivien Didelot <vivien.didelot@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Now the first step of all .serdes_power implementations is getting
the lane mapping. Since we have an operation for that, call it in
the wrapper and pass the lane down to the .serdes_power operation.
This also allows to avoid querying the SERDES lane twice in
mv88e6xxx_port_set_cmode.
At the same time provide mv88e6xxx_serdes_power_{up,down} helpers
and prefer up/down instead of on/off as in the documentation.
Signed-off-by: Vivien Didelot <vivien.didelot@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The mv88e6352_serdes_power_set helper is only used at one place, in
mv88e6352_serdes_power. Keep it simple and merge the two functions
together.
Use mv88e6xxx_serdes_get_lane instead of mv88e6352_port_has_serdes
to avoid moving code. No functional changes.
Signed-off-by: Vivien Didelot <vivien.didelot@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Even though 88E6352 has no dedicated lane for SERDES interfaces, it
uses a similar code as the other .serdes_get_lane implementations to
check the port's CMODE and ensure that SERDES operations are doable.
For consistency, implement mv88e6352_serdes_get_lane for the 88E6352
and similar switches which simply returns an unused 0xff lane address.
Signed-off-by: Vivien Didelot <vivien.didelot@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Because the mapping between a SERDES interface and its lane is static,
we don't need to stick with negative error codes actually and we can
simply return 0 if there is no lane, just like the IRQ mapping.
This way we can keep a simple and intuitive API using unsigned lane
numbers while simplifying the implementations with single return
statements. Last but not least, fix the reverse chrismas tree in
mv88e6390x_serdes_get_lane.
Signed-off-by: Vivien Didelot <vivien.didelot@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Introduce a new .serdes_irq_mapping operation to prepare the
abstraction of IRQ mapping from the SERDES IRQ setup code.
Signed-off-by: Vivien Didelot <vivien.didelot@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The current mv88e6xxx SERDES code checks for negative error code from
irq_find_mapping, while this function returns an unsigned integer. This
patch removes this dead code and simply returns 0 is no IRQ is found.
Signed-off-by: Vivien Didelot <vivien.didelot@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The mv88e6352_serdes_irq_link helper is not checking for any error that
may occur during hardware accesses. Worst, the "up" boolean is set from
the potentially unused "status" variable, if read operations failed.
As done in mv88e6390_serdes_irq_link_sgmii, return right away and do
not call dsa_port_phylink_mac_change if an error occurred.
Signed-off-by: Vivien Didelot <vivien.didelot@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fixes gcc '-Wunused-but-set-variable' warning:
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c: In function 'hclge_restore_vlan_table':
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c:8016:18: warning:
variable 'qos' set but not used [-Wunused-but-set-variable]
Reported-by: Hulk Robot <hulkci@huawei.com>
Fixes: 70a214903d ("net: hns3: reduce the parameters of some functions")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pointer reg_info is being initialized with a value that is never read and
is being re-assigned a little later on. The assignment is redundant
and hence can be removed.
Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pointer iter is being initialized with a value that is never read and
is being re-assigned a little later on. The assignment is redundant
and hence can be removed.
Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
RTL8125 uses a different register for VLAN offloading config,
therefore don't set bit RxVlan.
Fixes: f1bce4ad2f ("r8169: add support for RTL8125")
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds handlers for PLDM over NC-SI command response.
This enables NC-SI driver recognizes the packet type so the responses
don't get dropped as unknown packet type.
PLDM over NC-SI are not handled in kernel driver for now, but can be
passed back to user space via Netlink for further handling.
Signed-off-by: Ben Wei <benwei@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Parav Pandit says:
====================
Minor cleanup in devlink
Two minor cleanup in devlink.
Patch-1 Explicitly defines devlink port index as unsigned int
Patch-2 Uses switch-case to handle different port flavours attributes
====================
Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Make core more readable with switch-case for various port flavours.
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Devlink port index attribute is returned to users as u32 through
netlink response.
Change index data type from 'unsigned' to 'unsigned int' to avoid
below checkpatch.pl warning.
WARNING: Prefer 'unsigned int' to bare use of 'unsigned'
81: FILE: include/net/devlink.h:81:
+ unsigned index;
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Davide Caratti says:
====================
net: tls: add socket diag
The current kernel does not provide any diagnostic tool, except
getsockopt(TCP_ULP), to know more about TCP sockets that have an upper
layer protocol (ULP) on top of them. This series extends the set of
information exported by INET_DIAG_INFO, to include data that are
specific to the ULP (and that might be meaningful for debug/testing
purposes).
patch 1/3 ensures that the control plane reads/updates ULP specific data
using RCU.
patch 2/3 extends INET_DIAG_INFO and allows knowing the ULP name for
each TCP socket that has done setsockopt(TCP_ULP) successfully.
patch 3/3 extends kTLS to let programs like 'ss' know the protocol
version and the cipher in use.
Changes since v2:
- remove unneeded #ifdef and fix reverse christmas tree in
tls_get_info(), thanks to Jakub Kicinski
Changes since v1:
- don't worry about grace period when accessing ulp_ops, thanks to
Jakub Kicinski and Eric Dumazet
- use rcu_dereference() to access ULP data in tls get_info(), and
test against NULL value, thanks to Jakub Kicinski
- move RCU protected section inside tls get_info(), thanks to Jakub
Kicinski
Changes since RFC:
- some coding style fixes, thanks to Jakub Kicinski
- add X_UNSPEC as lowest value of uAPI enums, thanks to Jakub Kicinski
- fix assignment of struct nlattr *start, thanks to Jakub Kicinski
- let tls dump RXCONF and TXCONF, suggested by Jakub Kicinski
- don't dump anything if TLS version or cipher are 0 (but still return a
constant size in get_aux_size()), thanks to Boris Pismenny
- constify first argument of get_info() and get_size()
- use RCU to access access ulp_ops, like it's done for ca_ops
- add patch 1/3, from Jakub Kicinski
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
When an application configures kernel TLS on top of a TCP socket, it's
now possible for inet_diag_handler() to collect information regarding the
protocol version, the cipher type and TX / RX configuration, in case
INET_DIAG_INFO is requested.
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
currently, only getsockopt(TCP_ULP) can be invoked to know if a ULP is on
top of a TCP socket. Extend idiag_get_aux() and idiag_get_aux_size(),
introduced by commit b37e88407c ("inet_diag: allow protocols to provide
additional data"), to report the ULP name and other information that can
be made available by the ULP through optional functions.
Users having CAP_NET_ADMIN privileges will then be able to retrieve this
information through inet_diag_handler, if they specify INET_DIAG_INFO in
the request.
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We need to make sure context does not get freed while diag
code is interrogating it. Free struct tls_context with
kfree_rcu().
We add the __rcu annotation directly in icsk, and cast it
away in the datapath accessor. Presumably all ULPs will
do a similar thing.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sudarsana Reddy Kalluru says:
====================
qed*: Enhancements.
The patch series adds couple of enhancements to qed/qede drivers.
- Support for dumping the config id attributes via ethtool -w/W.
- Support for dumping the GRC data of required memory regions using
ethtool -w/W interfaces.
Patch (1) adds driver APIs for reading the config id attributes.
Patch (2) adds ethtool support for dumping the config id attributes.
Patch (3) adds support for configuring the GRC dump config flags.
Patch (4) adds ethtool support for dumping the grc dump.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds driver support for configuring grc dump config flags, and
dumping the grc data via ethtool get/set-dump interfaces.
Signed-off-by: Sudarsana Reddy Kalluru <skalluru@marvell.com>
Signed-off-by: Ariel Elior <aelior@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The patch adds driver support for configuring the grc dump config flags.
Signed-off-by: Sudarsana Reddy Kalluru <skalluru@marvell.com>
Signed-off-by: Ariel Elior <aelior@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add driver support for dumping the config id attributes via ethtool dump
interfaces.
Signed-off-by: Sudarsana Reddy Kalluru <skalluru@marvell.com>
Signed-off-by: Ariel Elior <aelior@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The patch adds driver support for reading the config id attributes from NVM
flash partition.
Signed-off-by: Sudarsana Reddy Kalluru <skalluru@marvell.com>
Signed-off-by: Ariel Elior <aelior@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vladimir Oltean says:
====================
Dynamic toggling of vlan_filtering for SJA1105 DSA
This patchset addresses a limitation in dsa_8021q where this sequence of
commands was causing the switch to stop forwarding traffic:
ip link add name br0 type bridge vlan_filtering 0
ip link set dev swp2 master br0
echo 1 > /sys/class/net/br0/bridge/vlan_filtering
echo 0 > /sys/class/net/br0/bridge/vlan_filtering
The issue has to do with the VLAN table manipulations that dsa_8021q
does without notifying the bridge layer. The solution is to always
restore the VLANs that the bridge knows about, when disabling tagging.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
The bridge core assumes that enabling/disabling vlan_filtering will
translate into the simple toggling of a flag for switchdev drivers.
That is clearly not the case for sja1105, which alters the VLAN table
and the pvids in order to obtain port separation in standalone mode.
There are 2 parts to the issue.
First, tag_8021q changes the pvid to a unique per-port rx_vid for frame
identification. But we need to disable tag_8021q when vlan_filtering
kicks in, and at that point, the VLAN configured as pvid will have to be
removed from the filtering table of the ports. With an invalid pvid, the
ports will drop all traffic. Since the bridge will not call any vlan
operation through switchdev after enabling vlan_filtering, we need to
ensure we're in a functional state ourselves. Hence read the pvid that
the bridge is aware of, and program that into our ports.
Secondly, tag_8021q uses the 1024-3071 range privately in
vlan_filtering=0 mode. Had the user installed one of these VLANs during
a previous vlan_filtering=1 session, then upon the next tag_8021q
cleanup for vlan_filtering to kick in again, VLANs in that range will
get deleted unconditionally, hence breaking user expectation. So when
deleting the VLANs, check if the bridge had knowledge about them, and if
it did, re-apply the settings. Wrap this logic inside a
dsa_8021q_vid_apply helper function to reduce code duplication.
Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Vivien Didelot <vivien.didelot@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Currently this simplified code snippet fails:
br_vlan_get_pvid(netdev, &pvid);
br_vlan_get_info(netdev, pvid, &vinfo);
ASSERT(!(vinfo.flags & BRIDGE_VLAN_INFO_PVID));
It is intuitive that the pvid of a netdevice should have the
BRIDGE_VLAN_INFO_PVID flag set.
However I can't seem to pinpoint a commit where this behavior was
introduced. It seems like it's been like that since forever.
At a first glance it would make more sense to just handle the
BRIDGE_VLAN_INFO_PVID flag in __vlan_add_flags. However, as Nikolay
explains:
There are a few reasons why we don't do it, most importantly because
we need to have only one visible pvid at any single time, even if it's
stale - it must be just one. Right now that rule will not be violated
by this change, but people will try using this flag and could see two
pvids simultaneously. You can see that the pvid code is even using
memory barriers to propagate the new value faster and everywhere the
pvid is read only once. That is the reason the flag is set
dynamically when dumping entries, too. A second (weaker) argument
against would be given the above we don't want another way to do the
same thing, specifically if it can provide us with two pvids (e.g. if
walking the vlan list) or if it can provide us with a pvid different
from the one set in the vg. [Obviously, I'm talking about RCU
pvid/vlan use cases similar to the dumps. The locked cases are fine.
I would like to avoid explaining why this shouldn't be relied upon
without locking]
So instead of introducing the above change and making sure of the pvid
uniqueness under RCU, simply dynamically populate the pvid flag in
br_vlan_get_info().
Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
Acked-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
- Add Sven to the MAINTAINERS file, by Simon Wunderlich
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Merge tag 'batadv-next-for-davem-20190830' of git://git.open-mesh.org/linux-merge
Simon Wunderlich says:
====================
This maintenance patchset includes the following patches:
- Add Sven to the MAINTAINERS file, by Simon Wunderlich
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
"unlikely(IS_ERR_OR_NULL(x))" is excessive. IS_ERR_OR_NULL() already uses
unlikely() internally.
Signed-off-by: Denis Efremov <efremov@linux.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Joe Perches <joe@perches.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
