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nvme: enforce minimum and maximum I/O queues

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Don't allow the user to request more than the valid maximum number of
I/O queues (65535) or 0 I/O queues, since this can't be encoded.

Change-Id: I2d6e0bba03476085842bad683b273cdf9d6e6d5e
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
This commit is contained in:
Daniel Verkamp 2016-03-23 16:33:20 -07:00
parent 2144f0e97f
commit 90095a79fe
1 changed files with 9 additions and 0 deletions
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9
lib/nvme/nvme_ctrlr.c
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@ -628,6 +628,15 @@ nvme_ctrlr_set_num_qpairs(struct spdk_nvme_ctrlr *ctrlr)
status.done = false;
if (ctrlr->opts.num_io_queues > SPDK_NVME_MAX_IO_QUEUES) {
nvme_printf(ctrlr, "Limiting requested num_io_queues %u to max %d\n",
ctrlr->opts.num_io_queues, SPDK_NVME_MAX_IO_QUEUES);
ctrlr->opts.num_io_queues = SPDK_NVME_MAX_IO_QUEUES;
} else if (ctrlr->opts.num_io_queues < 1) {
nvme_printf(ctrlr, "Requested num_io_queues 0, increasing to 1\n");
ctrlr->opts.num_io_queues = 1;
}
rc = nvme_ctrlr_cmd_set_num_queues(ctrlr, ctrlr->opts.num_io_queues,
nvme_completion_poll_cb, &status);
if (rc != 0) {