| Age | Commit message (Collapse) | Author |
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I have no idea why this code is here, but I have 2 hypotheses:
1.
A desperate attempt to keep untagged traffic working when the bridge
deletes the pvid on a port.
There was a fairly okay discussion here:
https://lore.kernel.org/netdev/CA+h21hrRMrLH-RjBGhEJSTZd6_QPRSd3RkVRQF-wNKkrgKcRSA@mail.gmail.com/#t
which established that in vlan_filtering=1 mode, the absence of a pvid
should denote that the ingress port should drop untagged and priority
tagged traffic. While in vlan_filtering=0 mode, nothing should change.
So in vlan_filtering=1 mode, we should simply let things happen, and not
attempt to save the day. And in vlan_filtering=0 mode, the pvid is 0
anyway, no need to do anything.
2.
The driver encodes the native VLAN (ocelot_port->vid) value of 0 as
special, meaning "not valid". There are checks based on that. But there
are no such checks for the ocelot_port->pvid value of 0. In fact, that's
a perfectly valid value, which is used in standalone mode. Maybe there
was some confusion and the author thought that 0 means "invalid" here as
well.
In conclusion, delete the code*.
*in fact we'll add it back later, in a slightly different form, but for
an entirely different reason than the one for which this exists now.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Currently, mscc_ocelot ports configure pvid=0 in standalone mode, and
inherit the pvid from the bridge when one is present.
When the bridge has vlan_filtering=0, the software semantics are that
packets should be received regardless of whether there's a pvid
configured on the ingress port or not. However, ocelot does not observe
those semantics today.
Moreover, changing the PVID is also a problem with vlan_filtering=0.
We are privately remapping the VID of FDB, MDB entries to the port's
PVID when those are VLAN-unaware (i.e. when the VID of these entries
comes to us as 0). But we have no logic of adjusting that remapping when
the user changes the pvid and vlan_filtering is 0. So stale entries
would be left behind, and untagged traffic will stop matching on them.
And even if we were to solve that, there's an even bigger problem. If
swp0 has pvid 1, and swp1 has pvid 2, and both are under a vlan_filtering=0
bridge, they should be able to forward traffic between one another.
However, with ocelot they wouldn't do that.
The simplest way of fixing this is to never configure the pvid based on
what the bridge is asking for, when vlan_filtering is 0. Only if there
was a VLAN that the bridge couldn't mangle, that we could use as pvid....
So, turns out, there's 0 just for that. And for a reason: IEEE
802.1Q-2018, page 247, Table 9-2-Reserved VID values says:
The null VID. Indicates that the tag header contains only
priority information; no VID is present in the frame.
This VID value shall not be configured as a PVID or a member
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
of a VID Set, or configured in any FDB entry, or used in any
Management operation.
So, aren't we doing exactly what 802.1Q says not to? Well, in a way, but
what we're doing here is just driver-level bookkeeping, all for the
better. The fact that we're using a pvid of 0 is not observable behavior
from the outside world: the network stack does not see the classified
VLAN that the switch uses, in vlan_filtering=0 mode. And we're also more
consistent with the standalone mode now.
And now that we use the pvid of 0 in this mode, there's another advantage:
we don't need to perform any VID remapping for FDB and MDB entries either,
we can just use the VID of 0 that the bridge is passing to us.
The only gotcha is that every time we change the vlan_filtering setting,
we need to reapply the pvid (either to 0, or to the value from the bridge).
A small side-effect visible in the patch is that ocelot_port_set_pvid
needs to be moved above ocelot_port_vlan_filtering, so that it can be
called from there without forward-declarations.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Use new dev_err_probe() API to handle deferred probe properly and simplify
the code.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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This patch adds final multi-port support to TI AM65x CPSW driver path in
preparation for adding support for multi-port devices, like Main CPSW0 on
K3 J721E SoC or future CPSW3g on K3 AM64x SoC.
- the separate netdev is created for every enabled external Port;
- DMA channels are common/shared for all external Ports and the RX/TX NAPI
and DMA processing assigned to first available netdev;
- external Ports are configured in mac-only mode, which is similar to TI
"dual-mac" mode for legacy TI CPSW - packets are sent to the Host port only
in ingress and directly to the Port on egress. No packet switching between
external ports happens.
- every port supports the same features as current AM65x CPSW on external
device.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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mac-only mode
This patch adds multi-port support to TI AM65x CPSW driver xmit/rx path in
preparation for adding support for multi-port devices, like Main CPSW0 on
K3 J721E SoC or future CPSW3g on K3 AM64x SoC.
Hence DMA channels are common/shared for all ext Ports and the RX/TX NAPI
and DMA processing going to be assigned to first available netdev this patch:
- ensures all RX descriptors fields are initialized;
- adds synchronization for TX DMA push/pop operation (locking) as
Networking core locks are not enough any more;
- updates TX bql processing for every packet in
am65_cpsw_nuss_tx_compl_packets() as every completed TX skb can have
different ndev assigned (come from different netdevs).
To avoid performance issues for existing one-port CPSW2g devices the above
changes are done only for multi-port devices by splitting xmit path for
one-port and multi-port devices.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The current implementation uses .ndo_set_features() callback to track
NETIF_F_HW_CSUM feature changes and update generic
CPSW_P0_CONTROL_REG.RX_CHECKSUM_EN option accordingly. It's not going to
work in case of multi-port devices as TX csum offload can be changed per
netdev.
On K3 CPSWxG devices TX csum offload enabled in the following way:
- the CPSW_P0_CONTROL_REG.RX_CHECKSUM_EN option enables TX csum offload in
generic and affects all TX DMA channels and packets;
- corresponding fields in TX DMA descriptor have to be filed properly when
upper layer wants to offload TX csum (skb->ip_summed == CHECKSUM_PARTIAL)
and it's per-packet option.
The Linux Network core is expected to never request TX csum offload if
netdev NETIF_F_HW_CSUM feature is disabled, and, as result, TX DMA
descriptors should not be modified, and per-packet TX csum offload will be
disabled (or enabled) on per-netdev basis. Which, in turn, makes it safe to
enable the CPSW_P0_CONTROL_REG.RX_CHECKSUM_EN option unconditionally.
Hence, fix TX csum offload for multi-port devices by:
- enabling the CPSW_P0_CONTROL_REG.RX_CHECKSUM_EN option in
am65_cpsw_nuss_common_open() unconditionally
- and removing .ndo_set_features() callback implementation, which was used
only NETIF_F_HW_CSUM feature update purposes
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Some K3 CPSW NUSS instances can lose context after PM runtime ON->OFF->ON
transition depending on integration (including all submodules: CPTS, MDIO,
etc), like J721E Main CPSW (CPSW9G).
In case CPTS is enabled it's initialized during probe and does not expect
to be reset. Hence, keep K3 CPSW active by forbidding PM runtime if CPTS is
enabled.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The VLAN offload for AM65x CPSW2G is implemented using existing ALE APIs,
which are also used by legacy CPSW drivers.
So, now it always adds current Ext. Port and Host as VLAN members when VLAN
is added by 8021Q core (.ndo_vlan_rx_add_vid) and forcibly removes VLAN
from ALE table in .ndo_vlan_rx_kill_vid(). This works as for AM65x CPSW2G
(which has only one Ext. Port) as for legacy CPSW devices (which can't
support same VLAN on more then one Port in multi mac (dual-mac) mode). But
it doesn't work for the new J721E and AM64x multi port CPSWxG versions
doesn't have such restrictions and allow to offload the same VLAN on any
number of ports.
Now the attempt to add same VLAN on two (or more) K3 CPSWxG Ports will
cause:
- VLAN members mask overwrite when VLAN is added
- VLAN removal from ALE table when any Port removes VLAN
This patch fixes an issue by:
- switching to use cpsw_ale_vlan_add_modify() instead of
cpsw_ale_add_vlan() when VLAN is added to ALE table, so VLAN members
mask will not be overwritten;
- Updates cpsw_ale_del_vlan() as:
if more than one ext. Port is in VLAN member mask
then remove only current port from VLAN member mask
else remove VLAN ALE entry
Example:
add: P1 | P0 (Host) -> members mask: P1 | P0
add: P2 | P0 -> members mask: P2 | P1 | P0
rem: P1 | P0 -> members mask: P2 | P0
rem: P2 | P0 -> members mask: -
The VLAN is forcibly removed if port_mask=0 passed to cpsw_ale_del_vlan()
to preserve existing legacy CPSW drivers functionality.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Add/export cpsw_ale_vlan_del_modify() and use it in cpsw_switchdev instead
of generic cpsw_ale_del_vlan() to avoid mixing 8021Q and switchdev VLAN
offload. This is preparation patch equired by follow up changes.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Use cppi5_desc_is_tdcm() helper for teardown indicator detection instead of
hard-coded value.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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In preparation of adding more multi-port K3 CPSW versions move free
descriptor queue mode selection in am65_cpsw_pdata, so it can be selected
basing on DT compatibility property.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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In preparation of adding more multi-port K3 CPSW versions move ALE
selection in am65_cpsw_pdata, so it can be selected basing on DT
compatibility property.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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With W=1 the following error is reported:
In function ‘strncpy’,
inlined from ‘hdlcdrv_ioctl’ at drivers/net/hamradio/hdlcdrv.c:600:4:
./include/linux/string.h:297:30: warning: ‘__builtin_strncpy’ specified bound 32 equals destination size [-Wstringop-truncation]
297 | #define __underlying_strncpy __builtin_strncpy
| ^
./include/linux/string.h:307:9: note: in expansion of macro ‘__underlying_strncpy’
307 | return __underlying_strncpy(p, q, size);
Replace strncpy with strlcpy to guarantee the string is terminated.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20201031181700.1081693-1-andrew@lunn.ch
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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drivers/net/wan/lmc/lmc_main.c: In function ‘lmc_ioctl’:
drivers/net/wan/lmc/lmc_main.c:356:25: warning: variable ‘mii’ set but not used [-Wunused-but-set-variable]
356 | u16 mii;
| ^~~
drivers/net/wan/lmc/lmc_main.c:427:25: warning: variable ‘mii’ set but not used [-Wunused-but-set-variable]
427 | u16 mii;
| ^~~
drivers/net/wan/lmc/lmc_main.c: In function ‘lmc_interrupt’:
drivers/net/wan/lmc/lmc_main.c:1188:9: warning: variable ‘firstcsr’ set but not used [-Wunused-but-set-variable]
1188 | u32 firstcsr;
This file has funky indentation, and makes little use of tabs. Keep
with this style in the patch, but that makes checkpatch unhappy.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20201031181417.1081511-1-andrew@lunn.ch
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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drivers/net/xen-netfront.c:2416:16: warning: variable ‘target’ set but not used [-Wunused-but-set-variable]
2416 | unsigned long target;
Remove target and just discard the return value from simple_strtoul().
This patch does give a checkpatch warning, but the warning was there
before anyway, as this file has lots of checkpatch warnings.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20201031180435.1081127-1-andrew@lunn.ch
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Improve the build testing of this davicom driver by enabling it when
COMPILE_TEST is selected.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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drivers/net/ethernet/davicom//dm9000.c: In function ‘dm9000_dumpblk_8bit’:
drivers/net/ethernet/davicom//dm9000.c:235:6: warning: variable ‘tmp’ set but not used [-Wunused-but-set-variable]
The driver needs to read packet data from the device even when the
packet is known bad. There is no need to assign the data to a variable
during this discard operation.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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When compiled for platforms other than __i386__ or __x86_64__:
drivers/net/ethernet/dec/tulip/tulip_core.c: In function ‘tulip_init_one’:
drivers/net/ethernet/dec/tulip/tulip_core.c:1296:13: warning: variable ‘last_irq’ set but not used [-Wunused-but-set-variable]
1296 | static int last_irq;
Add more #if defined() to totally remove the code when not needed.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20201031005445.1060112-1-andrew@lunn.ch
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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phy-handle can't be handled well for ast2400/2500 which has an embedded
MDIO controller. Add ftgmac100_mdio_setup for ast2400/2500 and initialize
PHYs from mdio child node with of_mdiobus_register.
Signed-off-by: Ivan Mikhaylov <i.mikhaylov@yadro.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Split MDIO registration and PHY connect into ftgmac100_setup_mdio and
ftgmac100_mii_probe.
Signed-off-by: Ivan Mikhaylov <i.mikhaylov@yadro.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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We can safely runtime-suspend the chip if rtl_open() fails. Therefore
switch the error path to use pm_runtime_put_sync() as well.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/aa093b1e-f295-5700-1cb7-954b54dd8f17@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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tp->dirty_tx isn't changed outside rtl_tx(). Therefore I see no need
to guarantee a specific order of reading tp->dirty_tx and tp->cur_tx.
Having said that we can remove the memory barrier.
In addition use READ_ONCE() when reading tp->cur_tx because it can
change in parallel to rtl_tx().
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/2264563a-fa9e-11b0-2c42-31bc6b8e2790@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Correct a typo in ne.c and ne2k-pci.c which
prevented activation of the RW-Bugfix.
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://lore.kernel.org/r/20201029143357.7008-1-W_Armin@gmx.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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This patch adds support for 10GBASE-R interface to the linux driver for
Cadence's ethernet controller.
This controller has separate MAC's and PCS'es for low and high speed paths.
High speed PCS supports 100M, 1G, 2.5G, 5G and 10G through rate adaptation
implementation. However, since it doesn't support auto negotiation, linux
driver is modified to support 10GBASE-R instead of USXGMII.
Signed-off-by: Parshuram Thombare <pthombar@cadence.com>
Link: https://lore.kernel.org/r/1603975627-18338-1-git-send-email-pthombar@cadence.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Unlike earlier silicon variants, OcteonTx2 98xx
silicon has 2 NIX blocks and each of the CGX is
mapped to either of the NIX blocks. Each NIX
block supports 100G. Mapping btw NIX blocks and
CGX is done by firmware based on CGX speed config
to have a maximum possible network bandwidth.
Since the mapping is not fixed, it's difficult
for a user to figure out. Hence added a debugfs
entry which displays mapping between CGX LMAC,
NIX block and RVU PF.
Sample result of this entry ::
~# cat /sys/kernel/debug/octeontx2/rvu_pf_cgx_map
PCI dev RVU PF Func NIX block CGX LMAC
0002:02:00.0 0x400 NIX0 CGX0 LMAC0
Signed-off-by: Rakesh Babu <rsaladi2@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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If NIX1 block is also implemented then add a new
directory for NIX1 in debugfs root. Stats of
NIX1 block can be read/writen from/to the files
in directory "/sys/kernel/debug/octeontx2/nix1/".
Signed-off-by: Rakesh Babu <rsaladi2@marvell.com>
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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CGX links are followed by LBK links but number of
CGX and LBK links varies between platforms. Hence
get the number of links present in hardware from
AF and use it to calculate LBK link number.
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: Rakesh Babu <rsaladi2@marvell.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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This patch puts together all mailbox changes
for 98xx silicon:
Attach ->
Modify resource attach mailbox handler to
request LFs from a block address out of multiple
blocks of same type. If a PF/VF need LFs from two
blocks of same type then attach mbox should be
called twice.
Example:
struct rsrc_attach *attach;
.. Allocate memory for message ..
attach->cptlfs = 3; /* 3 LFs from CPT0 */
.. Send message ..
.. Allocate memory for message ..
attach->modify = 1;
attach->cpt_blkaddr = BLKADDR_CPT1;
attach->cptlfs = 2; /* 2 LFs from CPT1 */
.. Send message ..
Detach ->
Update detach mailbox and its handler to detach
resources from CPT1 and NIX1 blocks.
MSIX ->
Updated the MSIX mailbox and its handler to return
MSIX offsets for the new block CPT1.
Free resources ->
Update free_rsrc mailbox and its handler to return
the free resources count of new blocks NIX1 and CPT1
Links ->
Number of CGX,LBK and SDP links may vary between
platforms. For example, in 98xx number of CGX and LBK
links are more than 96xx. Hence the info about number
of links present in hardware is useful for consumers to
request link configuration properly. This patch sends
this info in nix_lf_alloc_rsp.
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: Rakesh Babu <rsaladi2@marvell.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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On 98xx silicon, NPC block has additional
mcam entries, counters and NIX1 interfaces.
Extended set of registers are present for the
new mcam entries and counters.
This patch does the following:
- updates the register accessing macros
to use extended set if present.
- configures the MKEX profile for NIX1 interfaces also.
- updates mcam entry write functions to use assigned
NIX0/1 interfaces for the PF/VF.
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Rakesh Babu <rsaladi2@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Initialize MCE context for the assigned NIX0/1
block for a CGX mapped PF. Modified rvu_nix_aq_enq_inst
function to work with nix_hw so that MCE contexts
for both NIX blocks can be inited.
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: Rakesh Babu <rsaladi2@marvell.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Firmware configures NIX block mapping for all CGXs
to achieve maximum throughput. This patch reads
the configuration and create mapping between RVU
PF and NIX blocks. And for LBK VFs assign NIX0 for
even numbered VFs and NIX1 for odd numbered VFs.
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: Rakesh Babu <rsaladi2@marvell.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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This patch modifies NIX functions to operate
with nix_hw context so that existing functions
can be used for both NIX0 and NIX1 blocks. And
the NIX blocks present in the system are initialized
during driver init and freed during exit.
Signed-off-by: Rakesh Babu <rsaladi2@marvell.com>
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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AF manages the tasks of allocating, freeing
LFs from RVU blocks to PF and VFs. With new
NIX1 and CPT1 blocks in 98xx, this patch
adds support for handling new blocks too.
Co-developed-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Rakesh Babu <rsaladi2@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Since multiple blocks of same type are present in
98xx, modify functions which get resource count and
which update resource count to work with individual
block address instead of block type.
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: Rakesh Babu <rsaladi2@marvell.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Update the axienet driver to properly support the Xilinx PCS/PMA PHY
component which is used for 1000BaseX and SGMII modes, including
properly configuring the auto-negotiation mode of the PHY and reading
the negotiated state from the PHY.
Signed-off-by: Robert Hancock <robert.hancock@calian.com>
Reviewed-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Link: https://lore.kernel.org/r/20201028171429.1699922-1-robert.hancock@calian.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The previous commit added support for IPA having up to six source
and destination resources. But currently nothing uses more than
four. (Five of each are used in a newer version of the hardware.)
I find that in one of my build environments the compiler complains
about newly-added code in two spots. Inspection shows that the
warnings have no merit, but this compiler does not recognize that.
ipa_main.c:457:39: warning: array index 5 is past the end of the
array (which contains 4 elements) [-Warray-bounds]
(and the same warning at line 483)
We can make this warning go away by changing the number of elements
in the source and destination resource limit arrays--now rather than
waiting until we need it to support the newer hardware. This change
was coming soon anyway; make it now to get rid of the warning.
Signed-off-by: Alex Elder <elder@linaro.org>
Link: https://lore.kernel.org/r/20201031151524.32132-1-elder@linaro.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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After switching to the net core rx/tx byte/packet counters we can
remove the now unused private version.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Switch to the net core rx/tx byte/packet counter infrastructure.
This simplifies the code, only small drawback is some memory overhead
because we use just one queue, but allocate the counters per cpu.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The driver uses in_irq() to determine if the tlan_priv::lock has to be
acquired in tlan_mii_read_reg() and tlan_mii_write_reg().
The interrupt handler acquires the lock outside of these functions so the
in_irq() check is meant to prevent a lock recursion deadlock. But this
check is incorrect when interrupt force threading is enabled because then
the handler runs in thread context and in_irq() correctly returns false.
The usage of in_*() in drivers is phased out and Linus clearly requested
that code which changes behaviour depending on context should either be
seperated or the context be conveyed in an argument passed by the caller,
which usually knows the context.
tlan_set_timer() has this conditional as well, but this function is only
invoked from task context or the timer callback itself. So it always has to
lock and the check can be removed.
tlan_mii_read_reg(), tlan_mii_write_reg() and tlan_phy_print() are invoked
from interrupt and other contexts.
Split out the actual function body into helper variants which are called
from interrupt context and make the original functions wrappers which
acquire tlan_priv::lock unconditionally.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Samuel Chessman <chessman@tux.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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nv_update_stats() triggers a WARN_ON() when invoked from hard interrupt
context because the locks in use are not hard interrupt safe. It also has
an assert_spin_locked() which was the lock check before the lockdep era.
Lockdep has way broader locking correctness checks and covers both issues,
so replace the warning and the lock assert with lockdep_assert_held().
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Rain River <rain.1986.08.12@gmail.com>
Cc: Zhu Yanjun <zyjzyj2000@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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wait_for_cmd_complete() uses in_interrupt() to detect whether it is safe to
sleep or not.
The usage of in_interrupt() in drivers is phased out and Linus clearly
requested that code which changes behaviour depending on context should
either be seperated or the context be conveyed in an argument passed by the
caller, which usually knows the context.
in_interrupt() also is only partially correct because it fails to chose the
correct code path when just preemption or interrupts are disabled.
Add an argument 'may_block' to both functions and adjust the callers to
pass the context information.
The following call chains which end up invoking wait_for_cmd_complete()
were analyzed to be safe to sleep:
s2io_card_up()
s2io_set_multicast()
init_nic()
init_tti()
s2io_close()
do_s2io_delete_unicast_mc()
do_s2io_add_mac()
s2io_set_mac_addr()
do_s2io_prog_unicast()
do_s2io_add_mac()
s2io_reset()
do_s2io_restore_unicast_mc()
do_s2io_add_mc()
do_s2io_add_mac()
s2io_open()
do_s2io_prog_unicast()
do_s2io_add_mac()
The following call chains which end up invoking wait_for_cmd_complete()
were analyzed to be safe to sleep:
__dev_set_rx_mode()
s2io_set_multicast()
s2io_txpic_intr_handle()
s2io_link()
init_tti()
Add a may_sleep argument to wait_for_cmd_complete(), s2io_set_multicast()
and init_tti() and hand the context information in from the call sites.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Jon Mason <jdmason@kudzu.us>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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There is one main difference in mscc_ocelot between IP multicast and L2
multicast. With IP multicast, destination ports are encoded into the
upper bytes of the multicast MAC address. Example: to deliver the
address 01:00:5E:11:22:33 to ports 3, 8, and 9, one would need to
program the address of 00:03:08:11:22:33 into hardware. Whereas for L2
multicast, the MAC table entry points to a Port Group ID (PGID), and
that PGID contains the port mask that the packet will be forwarded to.
As to why it is this way, no clue. My guess is that not all port
combinations can be supported simultaneously with the limited number of
PGIDs, and this was somehow an issue for IP multicast but not for L2
multicast. Anyway.
Prior to this change, the raw L2 multicast code was bogus, due to the
fact that there wasn't really any way to test it using the bridge code.
There were 2 issues:
- A multicast PGID was allocated for each MDB entry, but it wasn't in
fact programmed to hardware. It was dummy.
- In fact we don't want to reserve a multicast PGID for every single MDB
entry. That would be odd because we can only have ~60 PGIDs, but
thousands of MDB entries. So instead, we want to reserve a multicast
PGID for every single port combination for multicast traffic. And
since we can have 2 (or more) MDB entries delivered to the same port
group (and therefore PGID), we need to reference-count the PGIDs.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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This saves a re-classification of the MDB address on deletion.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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It is Not Needed, a comment will suffice.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Since a helper is available for copying Ethernet addresses, let's use it.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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ocelot.h says:
/* MAC table entry types.
* ENTRYTYPE_NORMAL is subject to aging.
* ENTRYTYPE_LOCKED is not subject to aging.
* ENTRYTYPE_MACv4 is not subject to aging. For IPv4 multicast.
* ENTRYTYPE_MACv6 is not subject to aging. For IPv6 multicast.
*/
We don't want the permanent entries added with 'bridge mdb' to be
subject to aging.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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AIUI, the NETIF_F_TSO_MANGLEID flag is a signal to the stack that a
driver may _need_ to mangle IDs in order to do TSO, and conversely
a signal from the stack that the driver is permitted to do so.
Since we support both fixed and incrementing IPIDs, we should rely
on the SKB_GSO_FIXEDID flag on a per-skb basis, rather than using
the MANGLEID feature to make all TSOs fixed-id.
Includes other minor cleanups of ef100_make_tso_desc() coding style.
Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The NIC only needs to know where the headers it has to edit (TCP and
inner and outer IPv4) are, which fits GSO_PARTIAL nicely.
It also supports non-PARTIAL offload of UDP tunnels, again just
needing to be told the outer transport offset so that it can edit
the UDP length field.
(It's not clear to me whether the stack will ever use the non-PARTIAL
version with the netdev feature flags we're setting here.)
Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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We need EFX_POPULATE_OWORD_17 for an encap TSO descriptor on EF100.
Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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