The code refreshing the eth port state was trying to update state
of all ports of the card. Unfortunately to safely walk the port
list we would have to hold the port lock, which we can't due to
lock ordering constraints against rtnl.
Make the per-port sync refresh and async refresh of all ports
completely separate routines.
Fixes: 172f638c93 ("nfp: add port state refresh")
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
On the case where nn->eth_port is null the warning message
is printing the port by dereferencing this null pointer.
Remove the deference to avoid a crash when printing the
warning message.
Detected by CoverityScan, CID#1426198 ("Dereference after null check")
Fixes: ce22f5a2cb ("nfp: separate high level and low level NSP headers")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We will soon add more NSP commands and structure definitions.
Move all high-level NSP header contents to a common nfp_nsp.h file.
Right now it mostly boils down to renaming nfp_nsp_eth.h and
moving some functions from nfp.h there.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We will need a way of refreshing port state for link settings
get/set. For get we need to refresh port speed and type.
When settings are changed the reconfiguration may require
reboot before it's effective. Unregister netdevs affected
by reconfiguration from a workqueue.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We will want to unregister netdevs after their port got reconfigured.
For that we need to make sure manipulations of port list from the
port reconfiguration flow will not race with driver's .remove()
callback.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
After port reconfiguration (port split, media type change)
firmware will continue to report old configuration until
reboot. NSP will inform us that reconfiguration is pending.
To avoid user confusion refuse to spawn netdevs until the
new configuration is applied (reboot).
We need to split the netdev to eth_table port matching from
MAC search and move it earlier in the probe() flow.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Control BAR pointer is used to unmask interrupts so it should be
in the first cacheline of adapter structure.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Move all data path information into a separate structure. This way
we will be able to allocate new data path with all new rings etc.
and swap it in easily.
No functional changes.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We really only need the device pointer on the fast path, stash it at
the beginning of the adapter structure and move pci_dev pointer down.
This saves up a few lines of code.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
NSP reports to us port labels. First id is the id of the physical
port, the other one tells us which logical interface is it within a
split port. Instead of printing them as string keep them in integer
format. Compute which interfaces are part of port split.
On netdev side use port labels and split information to provide a
.ndo_get_phys_port_name() implementation. We follow the name format
of mlxsw which is also suggested in "Port Netdev Naming" section
of Documentation/networking/switchdev.txt.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
ethtool_drvinfo->fw_version can cantain multiple FW strings.
We already report NFD ABI version there, add NSP ABI version
if available (i.e. on PF) with 'sp:' prefix.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add PF driver for NFP4000 and NFP6000.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
