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ciss: Expose tunable hw.ciss.force_transport as sysctl

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Expose the hw.ciss.force_transport tuneable as a sysctl and make it
writeable at runtime.

PR: 246279
Reviewed by: imp
Tested by: Marek Zarychta
Differential Revision: https://reviews.freebsd.org/D25155
This commit is contained in:
Peter Eriksson 2024-10-13 22:01:33 -06:00 committed by Warner Losh
parent cec58bba64
commit 77af8c6db2
1 changed files with 3 additions and 0 deletions
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3
sys/dev/ciss/ciss.c
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@ -283,6 +283,9 @@ SYSCTL_INT(_hw_ciss, OID_AUTO, nop_message_heartbeat, CTLFLAG_RWTUN,
*/
static int ciss_force_transport = 0;
TUNABLE_INT("hw.ciss.force_transport", &ciss_force_transport);
SYSCTL_INT(_hw_ciss, OID_AUTO, force_transport, CTLFLAG_RDTUN,
&ciss_force_transport, 0,
"use default (0), force simple (1) or force performant (2) transport");
/*
* This tunable can force a particular interrupt delivery method to be used: