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nvme-tcp: check sgl supported by target

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SGLs support is mandatory for NVMe/tcp, make sure that the target is
aligned to the specification.

Signed-off-by: Max Gurtovoy <mgurtovoy@nvidia.com>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Max Gurtovoy 2021-03-30 23:01:19 +00:00 • committed by Christoph Hellwig
parent d8e7b462f5
commit 73ffcefcfc
1 changed files with 5 additions and 0 deletions
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5
drivers/nvme/host/tcp.c
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@ -1966,6 +1966,11 @@ static int nvme_tcp_setup_ctrl(struct nvme_ctrl *ctrl, bool new)
goto destroy_admin; goto destroy_admin;
} }
if (!(ctrl->sgls & ((1 << 0) | (1 << 1)))) {
dev_err(ctrl->device, "Mandatory sgls are not supported!\n");
goto destroy_admin;
}
if (opts->queue_size > ctrl->sqsize + 1) if (opts->queue_size > ctrl->sqsize + 1)
dev_warn(ctrl->device, dev_warn(ctrl->device,
"queue_size %zu > ctrl sqsize %u, clamping down\n", "queue_size %zu > ctrl sqsize %u, clamping down\n",