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cxgbei: Add tunable sysctls for the FirstBurstLength and MaxBurstLength.

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Reviewed by:	np
Sponsored by:	Chelsio Communications
Differential Revision:	https://reviews.freebsd.org/D30269
This commit is contained in:
John Baldwin 2021-05-19 15:56:54 -07:00
parent 671fd0ec8d
commit 3bede2908a
1 changed files with 8 additions and 2 deletions
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10
sys/dev/cxgbe/cxgbei/icl_cxgbei.c
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@ -104,6 +104,12 @@ static MALLOC_DEFINE(M_CXGBEI, "cxgbei", "cxgbei(4)");
SYSCTL_NODE(_kern_icl, OID_AUTO, cxgbei, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, SYSCTL_NODE(_kern_icl, OID_AUTO, cxgbei, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
"Chelsio iSCSI offload"); "Chelsio iSCSI offload");
static int first_burst_length = 8192;
SYSCTL_INT(_kern_icl_cxgbei, OID_AUTO, first_burst_length, CTLFLAG_RWTUN,
&first_burst_length, 0, "First burst length");
static int max_burst_length = 2 * 1024 * 1024;
SYSCTL_INT(_kern_icl_cxgbei, OID_AUTO, max_burst_length, CTLFLAG_RWTUN,
&max_burst_length, 0, "Maximum burst length");
static int sendspace = 1048576; static int sendspace = 1048576;
SYSCTL_INT(_kern_icl_cxgbei, OID_AUTO, sendspace, CTLFLAG_RWTUN, SYSCTL_INT(_kern_icl_cxgbei, OID_AUTO, sendspace, CTLFLAG_RWTUN,
&sendspace, 0, "Default send socket buffer size"); &sendspace, 0, "Default send socket buffer size");
@ -1206,8 +1212,8 @@ icl_cxgbei_limits(struct icl_drv_limits *idl)
idl->idl_max_send_data_segment_length = (1 << 24) - 1; idl->idl_max_send_data_segment_length = (1 << 24) - 1;
/* These are somewhat arbitrary. */ /* These are somewhat arbitrary. */
idl->idl_max_burst_length = 2 * 1024 * 1024; idl->idl_max_burst_length = max_burst_length;
idl->idl_first_burst_length = 8192; idl->idl_first_burst_length = first_burst_length;
t4_iterate(cxgbei_limits, idl); t4_iterate(cxgbei_limits, idl);