diff options
| author | Jonathan Matthew <jmatthew@cvs.openbsd.org> | 2020-07-23 01:24:54 +0000 |
|---|---|---|
| committer | Jonathan Matthew <jmatthew@cvs.openbsd.org> | 2020-07-23 01:24:54 +0000 |
| commit | 85748d56f1daa458228eb5cf936df3c5cf465c16 (patch) | |
| tree | 8df42c29b9302a20ef2ba9b23c1cd996f444d0d7 /sys/dev/pci/if_mcx.c | |
| parent | e6fc13c3df174193e28998d451a818b89f54941b (diff) | |
Increase the event queue size. When polling for admin command completion,
we don't wait for the event to be posted to the queue, we just look at the
command itself, which means we can build up a backlog of events to be posted.
Newer firmware for ConnectX-4 seems to get upset if the backlog grows
beyond some fraction of the event queue size, causing an interrupt storm.
This was reported by patrick@ and Hrvoje Popovski (at least) while testing
support for multiple tx/rx queues. With the new event queue size, we can
safely create 8 queues.
Diffstat (limited to 'sys/dev/pci/if_mcx.c')
| -rw-r--r-- | sys/dev/pci/if_mcx.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sys/dev/pci/if_mcx.c b/sys/dev/pci/if_mcx.c index 513598a0a49..87fb7334498 100644 --- a/sys/dev/pci/if_mcx.c +++ b/sys/dev/pci/if_mcx.c @@ -1,4 +1,4 @@ -/* $OpenBSD: if_mcx.c,v 1.70 2020/07/17 03:37:37 jmatthew Exp $ */ +/* $OpenBSD: if_mcx.c,v 1.71 2020/07/23 01:24:53 jmatthew Exp $ */ /* * Copyright (c) 2017 David Gwynne <dlg@openbsd.org> @@ -78,7 +78,7 @@ #define MCX_PAGE_SIZE (1 << MCX_PAGE_SHIFT) /* queue sizes */ -#define MCX_LOG_EQ_SIZE 6 /* one page */ +#define MCX_LOG_EQ_SIZE 7 #define MCX_LOG_CQ_SIZE 12 #define MCX_LOG_RQ_SIZE 10 #define MCX_LOG_SQ_SIZE 11 |