linux/drivers/net/ethernet/intel
Krzysztof Kazimierczak 3f0d97cdfe ice: Check UMEM FQ size when allocating bufs
If a UMEM is present on a queue when an interface/queue pair is being
enabled, the driver will try to prepare the Rx buffers in advance to
improve performance. However, if fill queue is shorter than HW Rx ring,
the driver will report failure after getting the last address from the
fill queue.

This still lets the driver process the packets correctly during the NAPI
poll, but leads to a constant NAPI rescheduling. Not allocating the
buffers in advance would result in a potential performance decrease.

Commit d57d76428a ("xsk: Add API to check for available entries in FQ")
provides an API that lets drivers check the number of addresses that the
fill queue holds.

Notify the user if fill queue is not long enough to prepare all buffers
before packet processing starts, and allocate the buffers during the
NAPI poll. If the fill queue size is sufficient, prepare Rx buffers in
advance.

Signed-off-by: Krzysztof Kazimierczak <krzysztof.kazimierczak@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2020-05-27 18:13:59 -07:00
..
e1000 e1000: Do not perform reset in reset_task if we are already down 2020-05-21 16:18:42 -07:00
e1000e e1000e: disable s0ix entry and exit flows for ME systems 2020-05-22 18:21:52 -07:00
fm10k net: fm10k: reject unsupported coalescing params 2020-03-12 11:32:36 -07:00
i40e i40e, xsk: Migrate to new MEM_TYPE_XSK_BUFF_POOL 2020-05-21 17:31:26 -07:00
iavf net: iavf: reject unsupported coalescing params 2020-03-12 11:32:36 -07:00
ice ice: Check UMEM FQ size when allocating bufs 2020-05-27 18:13:59 -07:00
igb igb: Report speed and duplex as unknown when device is runtime suspended 2020-05-22 18:21:52 -07:00
igbvf net: igbvf: reject unsupported coalescing params 2020-03-12 11:32:36 -07:00
igc igc: Remove unused descriptor's flags 2020-05-22 18:21:52 -07:00
ixgb Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2019-12-22 15:15:05 -08:00
ixgbe ixgbe, xsk: Migrate to new MEM_TYPE_XSK_BUFF_POOL 2020-05-21 17:31:27 -07:00
ixgbevf ixgbevf: Add XDP frame size to VF driver 2020-05-14 21:21:56 -07:00
e100.c netdev: pass the stuck queue to the timeout handler 2019-12-12 21:38:57 -08:00
Kconfig ice: enable initial devlink support 2020-03-21 00:55:42 -07:00
Makefile igc: Add skeletal frame for Intel(R) 2.5G Ethernet Controller support 2018-10-17 12:14:54 -07:00