Provide infrastructure to create and destroy representors of a given type.
Parts based on work by Bert van Leeuwen, Benjamin LaHaise,
and Jakub Kicinski.
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
If present map mac_stats and vf_cfg BARs. These will be used by
representor netdevs to read statistics for phys port and vf representors.
Also provide defines describing the layout of the mac_stats area.
Similar defines are already present for the cf_cfg area.
Based in part on work by Jakub Kicinski.
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Move MAC/PHY port init into a helper to make it easier to reuse
it in the representor code.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add app callback for reporting eswitch mode. Non-SRIOV apps
should not implement this callback, nfp_app code will then
respond with -EOPNOTSUPP.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Make use of just added XDP_ATTACHED_HW.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Respect the XDP_FLAGS_HW_MODE. When it's set install the program
on the NIC and skip enabling XDP in the driver.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The xdp_prog member of the adapter's data path structure is used
for XDP in driver mode. In case a XDP program is loaded with in
HW-only mode, we need to store it somewhere else. Add a new XDP
prog pointer in the main structure and use that when we need to
know whether any XDP program is loaded, not only a driver mode
one. Only release our reference on adapter free instead of
immediately after netdev unregister to allow offload to be disabled
first.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
DRV_MODE means that user space wants the program to be run in
the driver. Do not try to offload. Only offload if no mode
flags have been specified.
Remember what the mode is when the program is installed and refuse
new setup requests if there is already a program loaded in a
different mode. This should leave it open for us to implement
simultaneous loading of two programs - one in the drv path and
another to the NIC later.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In preparation of XDP offload flags move the driver setup into
a function. Otherwise the number of conditions in one function
would make it slightly hard to follow. The offload handler may
now be called with NULL prog, even if no offload is currently
active, but that's fine, offload code can handle that.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add general use per-vNIC mailbox area and use it for VLAN filtering
support. Initially proto is hardcoded to 802.1q.
Signed-off-by: Pablo Cascón <pablo.cascon@netronome.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add support to nfp to report bpf_prog ID during XDP_QUERY_PROG.
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Cc: Jakub Kicinski <jakub.kicinski@netronome.com>
Acked-by: Alexei Starovoitov <ast@fb.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Make sure application FW build name is NULL-terminated and
print it as a part of ethtool's firmware version string.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Microcode Information Page contains some useful information, like
application firmware build name. Keep it around, similar to RTSym
and HWInfo.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Make callers take care of managing life time of HWInfo.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The fact that RTsym table is cached inside nfp_cpp handle is
a relic of old times when nfpcore was a library module. All
the nfp_cpp "caches" are awkward to deal with because of
concurrency and prone to keeping stale information. Make
the run time symbol table be an object read out from the device
and managed by whoever requested it. Since the driver loads
FW at ->probe() and never reloads, we can hold onto the table
for ever.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
If very last stages of netdev registering and init fail some
other netdevs and devlink ports may have been visible to user
space before we torn them back down. In this case there is a
slight chance user may have triggered port refresh. We need
to make sure the async work is cancelled.
We have to cancel after releasing pf->lock, so we will always
try to cancel, regardless of which part of probe has failed.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We need to push the chain index down to the drivers, so they have the
information to which chain the rule belongs. For now, no driver supports
multichain offload, so only chain 0 is supported. This is needed to
prevent chain squashes during offload for now. Later this will be used
to implement multichain offload.
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
NFD ABI 0.5 is equivalent to NFD ABI 3.0 but requires that the
driver checks the APP id symbol and makes sure it can support
given app. Most advanced apps will likely require control vNIC
(ability to exchange control messages between the driver and
app FW). Detailed app version checking and capability exchange
is left to app-specific code.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When driver encounters an nfp_app which has a control message handler
defined, allocate a control vNIC. This control channel will be used
to exchange data with the application FW such as flow table programming,
statistics and global datapath control.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Thus far the code assumed all vNICs will request similar number of IRQs.
This will be no longer true with control vNICs (where 1 IRQ will suffice).
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We want to be able to create a special vNIC for control messages.
This vNIC should be created before any netdev is registered to allow
nfp_app logic to exchange messages with the FW app before any netdev
is visible to user space. Unfortunately we can't enable IRQs until
we know how many vNICs we will need to spawn.
Divide the function which spawns netdevs for vNICs into three parts:
- vNIC/memory allocation;
- IRQ allocation;
- netdev init and register.
This will help us insert the initialization of the control channel
after IRQ allocation but before netdev init and register.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Reading fw version from the BAR is trivial. Don't pass it around
through layers of init functions, simply read it again where needed.
This commit has the side effect of each vNIC having the exact NFD
version from its own control memory, rather than all data vNICs
assuming the version of the first one. This should not result in
user-visible changes, though. Capabilities of data vNICs of trival
apps are identical.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
RX and TX queue controllers are interleaved. Instead of creating
two mappings which map the same area at slightly different offset,
create only one mapping. Always map all queue controllers to simplify
the code and allow reusing the mapping for non-data vNICs.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We will soon need to map control vNIC PCI memory as well as data vNIC
memory. Make the function for mapping areas pointed to by an RTsym
reusable.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Since control vNICs don't have a netdev, they can't use napi and
queuing stack provides. Add simple tasklet-based data receive
and send of control messages with queuing on a skb_list.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Out of the three stages of ifup/ifdown (allocate, configure, start)
- this commit prepares the configuration stage for working with
control vNICs.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
vNICs used for sending and receiving control messages shouldn't
really have a netdev. Add the ability to initialize vNICs for
netdev-less operation.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We want to be able to inspect the state of descriptor rings of
the control vNIC, so it will use the same interface as data vNICs.
Make sure the code doesn't use netdevs to determine state
of the rings and names things appropriately.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
To be able to reuse print macros easily with control vNICs make the
macros check if netdev pointer is populated and use dev_* print
functions otherwise.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Move nfp_net_vecs_init() after all datapath functions. We will need
to init poll() callbacks from this function soon.
No functional changes.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
On the close path reuse the ring free helpers introduced for runtime
reconfiguration.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Our open/close implementations have 3 stages:
- allocation/freeing of ring resources, irqs etc.,
- device config,
- device/stack enable (can't fail).
Right now all of those stages are placed in separate functions,
apart from allocation during open. Fix that. It will make it
easier for us to allocate resources for netdev-less vNICs.
Because we want to reuse allocation code in netdev-less vNICs
leave the netif_set_real_num_[rt]x_queues() calls inside open.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We will soon reuse parts of .ndo_stop() for clean up after errors
in .ndo_open(). Reorder the associated functions to make that possible.
No functional changes.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Free management FW info when app FW load failed.
Fixes: eefbde7e10 ("nfp: add hwmon support")
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Allow apps to associate private data with vNICs and move
BPF-specific fields of nfp_net to such structure.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Move bulk of the eBPF offload code out of common vNIC code into
app-specific callbacks.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pure move of eBPF offload files to BPF app directory,
only change the names and relative header location.
nfp_asm.h stays in the main dir and it doesn't really
have to include nfp_bpf.h.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Let the app print its name in ethtool -i output.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Start fleshing out the apps by turning the vNIC init code to
a per-app callback. The two initial apps we have are NIC and
eBPF.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Turn the function to read number of ports into a generic helper.
While at it make sure we propagate all errors other than -ENOENT.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
GCC 7 checks for fall through comments, add the two missing ones.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Forgetting to disable preemption around tcf_action_stats_update()
seems to be a common mistake. Add a helper function for updating
stats on all actions of a filter.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We only kick RX free buffer queue controller every NFP_NET_FL_BATCH
(currently 16) entries. This means that we will always kick the QC
when write ring index is divisable by NFP_NET_FL_BATCH. There is
no need to keep counts.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Adding ring size to index calculation is pointless, since index
will be masked with ring size - 1.
Suggested-by: David Laight <David.Laight@ACULAB.COM>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ring pointers are unsigned. Fix the print formats to avoid
showing users negative values.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
There is currently no timeout to the resource and lock acquiring
loops. We printed warnings and depended on user sending a signal
to the waiting process to stop the waiting. This doesn't work
very well when wait happens out of a work queue. The simplest
example of that is PCI probe. When user loads the module and card
is in a broken state modprobe will wait forever and signals sent
to it will not actually reach the probing thread.
Make sure all wait loops have a time out. Set the upper wait time
to 60 seconds to stay on the safe side.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add support for retrieving temperature and power sensor and limits via NSP.
Signed-off-by: David Brunecz <david.brunecz@netronome.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We want to support extendable commands, where newer versions
of the management FW may provide more information. Zero out
the communication buffer before passing control to NSP. This
way if management FW is old and only fills in first N bytes,
the remaining ones will be zeros which extended ABI fields
should reserve as not supported/not available.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We currently print reserved BAR mappings info as we create them.
This makes the probe logs longer than necessary. Print into a
buffer instead and log all the info as a single line.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
nfp_cpp_{read,write}() helpers perform device memory mapping (setting
the PCIe -> NOC translation BARs) and accessing it. They, however,
currently implicitly expect that the length of entire operation will
fit in one BAR translation window. There is a number of 16MB windows
available, and we don't really need to access such large areas today.
If the user, however, manages to trick the driver into making a big
mapping (e.g. by providing a huge fake FW file), the driver will
print a warning saying "No suitable BAR found for request" and a
stack trace - which most users find concerning.
To be future-proof and not scare users with warnings, make the
nfp_cpp_{read,write}() helpers do accesses chunk by chunk if the area
size is large. Set the notion of "large" to 2MB, which is the size
of the smallest BAR window.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Simon Horman