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Differential D18287

sfxge(4): ensure EvQ poll stops when abort is requested
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Authored by arybchik on Nov 21 2018, 11:59 AM.
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gnn
philip
Commits
rS342521: MFC r341326
rS342450: MFC r341326
rS342342: MFC r341326
rS341326: sfxge(4): ensure EvQ poll stops when abort is requested
Summary

If an event handler requested an abort, only the inner loop was
guarenteed to be broken out of - the outer loop could continue
if total == batch.

Fix this by poisoning batch to ensure it is different to total.

Submitted by: Mark Spender <mspender at solarflare.com>
Sponsored by: Solarflare Communications, Inc.
MFC after: 1 week

Test Plan

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

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rS FreeBSD src repository - subversion
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Event Timeline

arybchik created this revision.Nov 21 2018, 11:59 AM
Harbormaster completed remote builds in B21146: Diff 50887.Nov 21 2018, 11:59 AM
This revision was not accepted when it landed; it landed in state Needs Review.Nov 30 2018, 7:11 AM
Closed by commit rS341326: sfxge(4): ensure EvQ poll stops when abort is requested (authored by arybchik). · Explain Why
This revision was automatically updated to reflect the committed changes.
Herald added a subscriber: imp. · View Herald TranscriptNov 30 2018, 7:11 AM

Revision Contents
Changeset List

PathSize
head/
sys/
dev/
sfxge/
common/
8 lines

Diff 51420

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

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