Merge branch 'intel-wired-lan-driver-updates-2025-01-06-igb-igc-ixgbe-ixgbevf-i40e-fm10k'
Tony Nguyen says:
====================
Intel Wired LAN Driver Updates 2025-01-06 (igb, igc, ixgbe, ixgbevf, i40e, fm10k)
For igb:
Sriram Yagnaraman and Kurt Kanzenbach add support for AF_XDP
zero-copy.
Original cover letter:
The first couple of patches adds helper functions to prepare for AF_XDP
zero-copy support which comes in the last couple of patches, one each
for Rx and TX paths.
As mentioned in v1 patchset [0], I don't have access to an actual IGB
device to provide correct performance numbers. I have used Intel 82576EB
emulator in QEMU [1] to test the changes to IGB driver.
The tests use one isolated vCPU for RX/TX and one isolated vCPU for the
xdp-sock application [2]. Hope these measurements provide at the least
some indication on the increase in performance when using ZC, especially
in the TX path. It would be awesome if someone with a real IGB NIC can
test the patch.
AF_XDP performance using 64 byte packets in Kpps.
Benchmark: XDP-SKB XDP-DRV XDP-DRV(ZC)
rxdrop 220 235 350
txpush 1.000 1.000 410
l2fwd 1.000 1.000 200
AF_XDP performance using 1500 byte packets in Kpps.
Benchmark: XDP-SKB XDP-DRV XDP-DRV(ZC)
rxdrop 200 210 310
txpush 1.000 1.000 410
l2fwd 0.900 1.000 160
[0]: https://lore.kernel.org/intel-wired-lan/20230704095915.9750-1-sriram.yagnaraman@est.tech/
[1]: https://www.qemu.org/docs/master/system/devices/igb.html
[2]: https://github.com/xdp-project/bpf-examples/tree/master/AF_XDP-example
Subsequent changes and information can be found here:
https://lore.kernel.org/intel-wired-lan/20241018-b4-igb_zero_copy-v9-0-da139d78d796@linutronix.de/
Yue Haibing converts use of ERR_PTR return to traditional error code
which resolves a smatch warning.
For igc:
Song Yoong Siang allows for the XDP program to be hot-swapped.
Yue Haibing converts use of ERR_PTR return to traditional error code
which resolves a smatch warning.
Joe Damato adds sets IRQ and queues to NAPI instances to allow for
reporting via netdev-genl API.
For ixgbe:
Yue Haibing converts use of ERR_PTR return to traditional error code
which resolves a smatch warning.
For ixgbevf:
Yue Haibing converts use of ERR_PTR return to traditional error code
which resolves a smatch warning.
For i40e:
Alex implements "mdd-auto-reset-vf" private flag to automatically reset
VFs when encountering an MDD event.
For fm10k:
Dr. David Alan Gilbert removes an unused function.
====================
Link: https://patch.msgid.link/20250106221929.956999-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
