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Use the dim library to manage dynamic interrupt
moderation in ionic.
v3: rebase
v2: untangled declarations in ionic_dim_work()
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Use index counters rather than pointers for tracking head
and tail in the queues to save a little memory and to perhaps
slightly faster queue processing.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
Split out the queue descriptor blocks into separate dma
allocations to make for smaller blocks.
Co-developed-by: Neel Patel <neel@pensando.io>
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
Currently bool ionic_cq.done_color is exported using
debugfs_create_u8(), which requires a cast, preventing further compiler
checks.
Fix this by switching to debugfs_create_bool(), and dropping the cast.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
Don't save the lif->dentry until we know we have
a good value.
Fixes: 1a58e196467f ("ionic: Add basic lif support")
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
clang warns:
../drivers/net/ethernet/pensando/ionic/ionic_debugfs.c:60:37: warning:
expression result unused [-Wunused-value]
ionic, &identity_fops) ? 0 : -EOPNOTSUPP;
^~~~~~~~~~~
1 warning generated.
The return value of debugfs_create_file does not need to be checked [1]
and the function returns void so get rid of the ternary operator, it is
unnecessary.
[1]: https://lore.kernel.org/linux-mm/20150815160730.GB25186@kroah.com/
Fixes: fbfb8031533c ("ionic: Add hardware init and device commands")
Link: https://github.com/ClangBuiltLinux/linux/issues/658
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Acked-by: Shannon Nelson <snelson@pensando.io>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The AdminQ is fine for sending messages and requests to the NIC,
but we also need to have events published from the NIC to the
driver. The NotifyQ handles this for us, using the same interrupt
as AdminQ.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
Most of the NIC configuration happens through the AdminQ message
queue. NAPI is used for basic interrupt handling and message
queue management. These routines are set up to be shared among
different types of queues when used in slow-path handling.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
The LIF is the Logical Interface, which represents the external
connections. The NIC can multiplex many LIFs to a single port,
but in most setups, LIF0 is the primary control for the port.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
The ionic device has a small set of PCI registers, including a
device control and data space, and a large set of message
commands.
Also adds new DEVLINK_INFO_VERSION_GENERIC tags for
ASIC_ID, ASIC_REV, and FW.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
