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nvmf: allow to override aer limit by specific transport

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it is possible that some specific transport doesn't support
NVMF_MAX_ASYNC_EVENTS (although it is a recommended value by spec)

with that change it is possible to reduce aerl on transport specific
layer so it can be advertised correctly during identify controller

Signed-off-by: Jacek Kalwas <jacek.kalwas@intel.com>
Change-Id: Ife6465b5324fb39f9b343c6f42b860e9dd1164b2
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/10422
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
This commit is contained in:
Jacek Kalwas 2021-11-25 13:24:14 -05:00 committed by Tomasz Zawadzki
parent 43022da379
commit 6237da13c0
2 changed files with 3 additions and 1 deletions
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1
include/spdk/nvmf_transport.h
View File

@ -201,6 +201,7 @@ struct spdk_nvmf_listener {
* A subset of struct spdk_nvme_ctrlr_data that are emulated by a fabrics device.
*/
struct spdk_nvmf_ctrlr_data {
uint8_t aerl;
uint16_t kas;
/** pci vendor id */
uint16_t vid;

3
lib/nvmf/ctrlr.c
View File

@ -304,6 +304,7 @@ static void
nvmf_ctrlr_cdata_init(struct spdk_nvmf_transport *transport, struct spdk_nvmf_subsystem *subsystem,
struct spdk_nvmf_ctrlr_data *cdata)
{
cdata->aerl = NVMF_MAX_ASYNC_EVENTS - 1;
cdata->kas = KAS_DEFAULT_VALUE;
cdata->vid = SPDK_PCI_VID_INTEL;
cdata->ssvid = SPDK_PCI_VID_INTEL;
@ -2498,7 +2499,7 @@ spdk_nvmf_ctrlr_identify_ctrlr(struct spdk_nvmf_ctrlr *ctrlr, struct spdk_nvme_c
cdata->mdts = spdk_u32log2(transport->opts.max_io_size / 4096);
cdata->cntlid = ctrlr->cntlid;
cdata->ver = ctrlr->vcprop.vs;
cdata->aerl = NVMF_MAX_ASYNC_EVENTS - 1;
cdata->aerl = ctrlr->cdata.aerl;
cdata->lpa.edlp = 1;
cdata->elpe = 127;
cdata->maxcmd = transport->opts.max_queue_depth;