Differential D18236

sfxge(4): support equal stride super-buffer Rx mode
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Authored by arybchik on Nov 21 2018, 11:49 AM.

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philip

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rS341205: sfxge(4): support equal stride super-buffer Rx mode

Summary

Equal stride super-buffer Rx mode is supported by DPDK firmware
variant. One Rx descriptor provides many Rx buffers to firmware.
Rx buffers follow each other with specified stride.
Also it supports head of line blocking with timeout to address
drops when no Rx descriptors are available. So it gives extra time
to the driver to provide Rx descriptors before drop.

Sponsored by: Solarflare Communications, Inc.

Test Plan

amd64 tinderbox kernel builds tested
driver loaded/unloaded, interfaces up/down, traffic works fine

Diff Detail

Repository

rS FreeBSD src repository - subversion

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Unit

Tests Not Applicable

Event Timeline

arybchik created this revision.Nov 21 2018, 11:49 AM

Harbormaster completed remote builds in B21094: Diff 50835.Nov 21 2018, 11:49 AM

This revision was not accepted when it landed; it landed in state Needs Review.Nov 29 2018, 6:45 AM

Closed by commit rS341205: sfxge(4): support equal stride super-buffer Rx mode (authored by arybchik). · Explain Why

This revision was automatically updated to reflect the committed changes.

Herald added a subscriber: imp. · View Herald TranscriptNov 29 2018, 6:45 AM

Revision Contents
Changeset List

Path

Size

head/

sys/

dev/

sfxge/

common/

30 lines

10 lines

80 lines

2 lines

34 lines

7 lines

12 lines

52 lines

Diff 51333

head/sys/dev/sfxge/common/ef10_ev.c

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head/sys/dev/sfxge/common/ef10_impl.h

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head/sys/dev/sfxge/common/ef10_rx.c

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head/sys/dev/sfxge/common/efsys.h

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head/sys/dev/sfxge/common/efx.h

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head/sys/dev/sfxge/common/efx_check.h

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head/sys/dev/sfxge/common/efx_impl.h

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head/sys/dev/sfxge/common/efx_rx.c

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