.TH "libnvme" 9 "struct nvme_rate_limiting_port_descriptor" "October 2026" "API Manual" LINUX
.SH NAME
struct nvme_rate_limiting_port_descriptor \- Rate Limiting Port Descriptor (QPD)
.SH SYNOPSIS
struct nvme_rate_limiting_port_descriptor {
.br
.BI "    __le16 portid;"
.br
.BI "    __le16 nc;"
.br
.BI "    __u8 rsvd4[3];"
.br
.BI "    __u8 abwsf;"
.br
.BI "    struct nvme_rate_limiting_max_access_descriptor rlma;"
.br
.BI "    __le64 arbwv;"
.br
.BI "    __le64 awbwv;"
.br
.BI "    __le32 ariops;"
.br
.BI "    __le32 awiops;"
.br
.BI "    __u8 rsvd64[448];"
.br
.BI "    __u8 vs[512];"
.br
.BI "    __le32 rlc_offset[];"
.br
.BI "
};
.br

.SH Members
.IP "portid" 12
NVM subsystem Port Identifier
.IP "nc" 12
Number of Controllers in \fIrlc_offset\fP (0's based)
.IP "rsvd4" 12
Reserved
.IP "abwsf" 12
Available Bandwidth Scale Factor, see \fIenum nvme_rate_limiting_bw_scale\fP
.IP "rlma" 12
Rate Limiting Maximum Access to the non-volatile storage
medium of the port
.IP "arbwv" 12
Available Read Bandwidth Value of the NVM subsystem to the transport
.IP "awbwv" 12
Available Write Bandwidth Value of the NVM subsystem to the transport
.IP "ariops" 12
Available Read IOPS of the NVM subsystem to the transport
.IP "awiops" 12
Available Write IOPS of the NVM subsystem to the transport
.IP "rsvd64" 12
Reserved
.IP "vs" 12
Vendor Specific
.IP "rlc_offset" 12
Dword offsets, relative to the start of the Rate Limiting log
page, to the Rate Limiting Controller Descriptors accessible
by this port, \fInc\fP + 1 entries